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Author SHA1 Message Date
Joachim Wiberg 437f95f00f Bump version for final (?) release candidate, v4.0-rc4
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-19 15:40:26 +02:00
Joachim Wiberg 099672fabb configure: change --enable-redirect -> --disable-redirect
This changes the default to redirect output from run/task/services to
/dev/null.  Use --disable-redirect to get the old pre v4.0 behavior.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-19 15:25:57 +02:00
Joachim Wiberg 860515a716 contrib: load softdog module on Alpine/Void Linux for finit-watchdog
We need at least the softdog watchdog driver loaded for proper watchdog
reset at reboot.  This can safely be replaced with a hardware specific
module that provides /dev/watchdog ... without one Finit will try to
restart the built-in finit-watchdog service 10 times to no avail.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-19 14:52:28 +02:00
Joachim Wiberg c85551a42e watchdog: wait for WDT reset only if watchdogd is running
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-19 14:41:48 +02:00
Joachim Wiberg 79dc6e7472 Update Travis, Alpine, and Void build options
- Fallback shell has been removed
 - Built-in watchdog has been renamed

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-19 13:55:24 +02:00
Joachim Wiberg 06e456384c watchdog: Enable --with-watchdog[=DEV] and improve log messages
This patch changes the configure option to enable the built-in watchdog
from --enable-watchdog to --with-watchdog[=DEV].  This is the convention
for features that take arguments.

Also, improve log messages to aid debugging when finit-watchdogd does
not start properly.  This means flushing logs to syslogd with closelog()

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-19 13:41:31 +02:00
Joachim Wiberg 38f7d24a80 tty: clean up developer debug messages
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-19 11:05:07 +02:00
Joachim Wiberg 145c78ef3e Follow-up to 7f76202: Remove fallback-shell from configure summary
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-19 11:05:07 +02:00
Joachim Wiberg dd437bf0a5 Follow-up to 18ab7d3: restore start of built-in watchdogd
This patch restores the start of the built-in/bundled watchdogd.  It is
tracked in the `wdog` variable and handled as an exception at shutdown.

This is also a follow-up to 7b74c99, ensuring that we only kill/stop the
built-in watchdog, not any external.  External ones can register to be
the controlling watchdogd in the system -- Finit is not the arbiter for
singletons, this is up to the system engineer.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-19 11:05:07 +02:00
Joachim Wiberg d82d119729 plugins: handle corner case when PID file doesn't exist
If we get a notification and the service dies immediately, and also
removes its pid file, we need to take corrective action.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-19 09:45:57 +02:00
Joachim Wiberg 7f76202865 Simplify, drop --enable-fallback-shell from configure script
Recommend using `notty` option in tty stanza instead.  See the updated
docs for details.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-18 23:13:19 +02:00
Joachim Wiberg aee92751ac Minor, add env: and sysv examples to first example .conf
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-18 16:24:19 +02:00
Joachim Wiberg 2ea7236d45 Add feature list immediately after screenshot
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-18 14:52:50 +02:00
Joachim Wiberg cedc04e1e3 Revert "Travis-CI: disable clang for coverity scan run"
This reverts commit 0168b765c1.
2021-04-18 12:37:21 +02:00
Joachim Wiberg edc6eb1747 initctl: fix too small destination buffer (unlikely)
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-18 12:24:49 +02:00
Joachim Wiberg be5ec94fdf Fix GCC warnings for unhandled return value
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-18 12:24:32 +02:00
Joachim Wiberg 23a13fe1b6 initctl: add hidden command line option -d,--debug
For developer use only.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-18 12:23:58 +02:00
Joachim Wiberg 0168b765c1 Travis-CI: disable clang for coverity scan run
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-18 11:55:25 +02:00
Joachim Wiberg 01358a5a45 doc: update service with pre:script and post:script actions
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-18 11:37:01 +02:00
Joachim Wiberg 106516d12d doc: update tty config, detail <COND> and @console vs console
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-18 11:34:57 +02:00
Joachim Wiberg ba858743e5 Fix #129: add pre:script and post:script action support
This patch updates the service state machine with two new states: SETUP
and CLEANUP.  If an executable pre:/path/to/script is defined for a
service, it is called every time the task goes to READY state.  If an
executable post:/path/to/script is defined for a service, it is called
when the task goes to HALTED state.

Each of these two scripts default to a three (3) second execution time
before they are SIGKILLed.  This can be adjusted with the `kill:SEC`
option for the service.  There are no execution guarantees, nor are
there any way of detecting if the script was killed before completion or
not -- except for running Finit in debug mode and inspecting the result
printed by system_monitor().

Note: the post:script MUST be idempotent since transitions between READY
      and HALTED can take place any number of times before a task goes
      to its RUNNING state.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-18 11:33:38 +02:00
Joachim Wiberg 9fd860ef3c initctl: cgroup and status commands should show mem.min numeric
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-18 10:37:38 +02:00
Joachim Wiberg 46ccdc3820 Fix ordering issue, pid is unset for kill(-pid, SIGKILL) op
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-18 09:52:48 +02:00
Joachim Wiberg 242fe54afd initctl: standardize on code=signal for signaled/killed cause
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-18 09:51:53 +02:00
Joachim Wiberg df5d296cd9 initctl: fix too small buffer for extended status
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-18 09:51:33 +02:00
Joachim Wiberg dc4630f214 contrib: consistent naming across distro examples
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-18 06:21:25 +02:00
Joachim Wiberg ac07d3bac7 contrib: run klogd in same cgroup as syslogd (same .conf file)
These two BusyBox daemon's run in concert so it makes sense they also
share the same cgroup.  In Finit that means sharing the same .conf file.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-18 06:17:40 +02:00
Joachim Wiberg f641eef8f7 Adjust command length for built-in getty
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-18 06:08:14 +02:00
Joachim Wiberg f17b5b3cd3 init: move bug report+homepage from -h to -v
Also, detect progname to improve usage text slightly.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-18 05:52:36 +02:00
Joachim Wiberg d945f4960b initctl: move bug report+homepage from help to version
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-18 05:51:45 +02:00
Joachim Wiberg 6a5a6ac62f Fix tty command line recomposition for initctl -v
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-18 05:50:49 +02:00
Joachim Wiberg a9ba4300ec contrib: add ttyS0 to list of ttys to start in Alpine Linux
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-18 05:03:23 +02:00
Joachim Wiberg 7bb649f11a tty: don't block SIGHUP, needed to exit getty gracefully
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-18 04:57:37 +02:00
Joachim Wiberg 85ada0ac99 initctl: minor, add linefeed at end of top session
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-18 04:47:22 +02:00
Joachim Wiberg be343a3b34 plugins: call bootmisc:bootclean() in HOOK_MOUNT_POST
Before this patch bootclean() ran first in setup() which caused to to
remove the entire /var/run/finit directory, and other files as well,
created earlier.  Only possible fix is to split clean and setup in
two and make sure to call clean as soon as we've mounted everything.

Note: this introduces a new behavior, and anyone hooking into the
      same point to do good-stuff(tm) may be affected by this.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-18 04:34:48 +02:00
Joachim Wiberg 0ac0e5c7d3 plugins: create /var/run/finit/cond/pid directory
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-18 04:34:29 +02:00
Joachim Wiberg 7f272768e4 Log error if reconf cannot be written
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-18 04:31:56 +02:00
Jacques de Laval 7b74c9900f Revert "Only track built-in watchdogd, not external ones"
This reverts commit 9eb8e8dd99.
2021-04-15 11:34:07 +02:00
Joachim Wiberg 36f1a39b31 Revert "Travis-CI: disable clang for coverity scan run"
This reverts commit 8d3917e9fa.
2021-04-15 10:30:05 +02:00
Joachim Wiberg 6d380082eb ttinit: check retun value from tcgetattr(), only restore if OK
Found by Coverity Scan.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-15 10:11:06 +02:00
Joachim Wiberg 8d3917e9fa Travis-CI: disable clang for coverity scan run
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-15 09:35:42 +02:00
Joachim Wiberg c3cd1a5bfa Merge pull request #166 from troglobit/tty-refactor
Tty refactor
2021-04-15 09:28:41 +02:00
Joachim Wiberg eaeddc36c2 Restore tty plugin after tty refactor
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-15 09:02:28 +02:00
Joachim Wiberg 4f40b65f0c svc_find_by_tty(): fix finder fn, check svc->dev, not name
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-15 08:46:21 +02:00
Joachim Wiberg f958aa504e cond_set_path(): minor, improve debug, 'new' -> 'next'
- Avoid using reserved C++ keyword 'new'
 - Rename new -> next
 - Rename old -> prev
 - Add debug for value being set to cond path

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-15 08:44:03 +02:00
Joachim Wiberg 3d1b95aa7a tty: export tty_exists() to rest of finit (for plugins)
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-15 08:43:32 +02:00
Joachim Wiberg 4bb67bc06f Restore @console handling and support for external getty
- Drop vhangup(), how did things ever work *with* this in?!
 - setsid() + TIOCSCTTY are best buds, see notty code
 - Allow storing any non-NULL string as tty->dev, expand in service_register()
 - Reorder parse_cmdline_args(), we need to expand @console to current dev
 - Fix tty arg parser, swapparoo for external getty
 - Refactor tty_atcon(), iterated over by service_register()
 - New arg format, need to translate for old run_getty2()

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-14 23:41:22 +02:00
Joachim Wiberg 0929c93caf Misc. cleanup
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-14 23:41:02 +02:00
Joachim Wiberg c0368d2b16 Refactor fallback shell handling, run as regular service
This patch re-enables the fallback shell handling after the big TTY
refactor.  We do this by allowing the fallback shell to run as a
regular service.

Note: this also adds the "hidden" support for 'notty' option for
      tty configurations stanzas.  This is just to pick up from
      where the kernel left us, reusing stdin + stdout.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-14 16:29:19 +02:00
Joachim Wiberg 85a212ef93 service_monitor(): cancel any pending SIGKILL timers
As soon as we collect a PID we should cancel any outstanding timer
actions.   Because we may very soon svc_del() it ...

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-14 16:29:19 +02:00
Joachim Wiberg 12c3cb3dc0 service_stop(): improve debug, show rc of kill(), and it's args.
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-14 16:29:19 +02:00
Joachim Wiberg 16710e7ab5 Fix possible NULL pointer deref.
Some C-lib, like GLIBC, convert NULL to <nil> when printing %p,
which we shouldn't rely on since others just bite the dust.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-14 16:29:19 +02:00
Joachim Wiberg b652aaf0cb Rename nologin shell: finit-sh -> finitsh, as fallback shell
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-14 16:29:19 +02:00
Joachim Wiberg 30020263ba Refactor tty handling to use service backend enabling conditions etc.
Initial refactor of the tty implementation to use the service/run/task
general backend.  This enables all the features of services also for
ttys, except logging because it makes no sense.

Work in progress:

 - plugins/tty.c does not work anymore, could possibly be removed in
   favor of usinga (a new) condition instead (if-tty-exists)
 - fallback tty does not work anymore, should we remove it, or can we
   handle it as an optional built-in with (a new) condition?
 - @console does not work anymore, needs to generate N cloned services

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-14 16:29:19 +02:00
Joachim Wiberg 3cf5d36972 doc: example of timed shutdown
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-10 16:45:33 +02:00
Joachim Wiberg c9ae96bcf7 doc: status of processes now shown in initctl status foo
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-10 16:31:25 +02:00
Joachim Wiberg 5955110e67 Revert "Travis-CI: disable gcc for coverity scan run"
This reverts commit 4cfc8fec0e.
2021-04-10 16:26:56 +02:00
Joachim Wiberg 4191e15c77 Travis-CI: adjust install dir, plain /tmp gets crowded
Calling `tree /tmp` causes too long execution time and Travis timing out
the job.  So let's install to a sane directory.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-10 16:25:39 +02:00
Joachim Wiberg d60baa2b80 initctl: logically dead code, found by Coverity Scan
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-10 15:59:13 +02:00
Joachim Wiberg a50bc331db Fix possible string truncation, found by Coverity Scan
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-10 15:56:44 +02:00
Joachim Wiberg eff4453de9 initctl: add missing comma in signames[], found by Coverity Scan
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-10 15:54:11 +02:00
Joachim Wiberg 4cfc8fec0e Travis-CI: disable gcc for coverity scan run
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-10 12:06:46 +02:00
Joachim Wiberg c9e1c2f80f initctl: show exit status/signaled like systemctl
- Show if exited/signaled
 - Show status code and the std /NAME
 - Show signal value and the std /NAME

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-10 11:51:29 +02:00
Joachim Wiberg 93039e40cc initctl: usability improvements to ls/edit family of commands
- List /etc/finit.conf
 - Allow edit of /etc/finit.conf, using finit/finit.conf or NULL
 - Add helpful question to edit /etc/finit.conf if no edit arg.
 - Show available files if delete has no arg, like disable

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-10 08:56:26 +02:00
Joachim Wiberg 015a52a20d sample.conf: update with cgroup help and examples
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-09 19:52:12 +02:00
Joachim Wiberg d53cc8bfe7 doc: Fix run/task/service cgroup config syntax
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-09 19:51:47 +02:00
Joachim Wiberg 3c4eca60b7 initctl: fix restart of run/tasks, stuck in DONE state
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-09 19:51:03 +02:00
Joachim Wiberg c85e28b971 Yield execution in forked children back to PID 1
- Speeds up start-up a bit
 - Ensures the child is moved to its cgroup as soon as possible

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-09 18:59:33 +02:00
Joachim Wiberg d373068619 exec: only log when starting getty, not before
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-09 18:58:53 +02:00
Joachim Wiberg 997f3d7862 cgroup: fix possible NULL pointer deref.
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-09 18:58:32 +02:00
Joachim Wiberg f12f53692e cgroup: allow adding self (PID 0) to a leaf group
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-09 18:58:11 +02:00
Joachim Wiberg b921b8cf0f cgroup: run all ttys, except rescue sh, in getty cgroup until login
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-09 18:32:31 +02:00
Joachim Wiberg 61781c72fe cgroup: Call ifupdown in system cgroup
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-09 18:21:04 +02:00
Joachim Wiberg 3b5cfc5ecf test: drop checksef.sh from EXTRA_DIST, generated now
Also, silence generation of checkself.sh

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-09 18:05:02 +02:00
Joachim Wiberg a42a789d29 Refactor, clean up removed top-level cgroups
The main purpose of this patch is to remove top-level cgroups when they
are remvoed from finit.conf.  However, this is tricky, becasue there may
still be supervised services (and children of them) running.  We must
postpone removal until a cgroup.events change.  To make matters worse,
events may arrive out-of-order, i.e. the last-child event for the parent
cgroup before the sub-group.

A spin-off from this patch is that we can now support arbitrarily long
group names and group config.  (Only applies to top-level cgroups, not
run/task/services.)

Limitations:
 - Processes in "removed" cgroups are not migrated/orphaned, the reasons
   are several: overhead and complexity and the fact that memory cannot
   be migrated
 - A lingering child of a moved service may prevent an old top-level
   cgroup from being removed.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-09 17:49:55 +02:00
Joachim Wiberg d77c014723 Add example of initctl status foo
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-08 17:11:35 +02:00
Joachim Wiberg 23fca9c067 Update initctl usage text, three new commands
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-08 17:04:13 +02:00
Joachim Wiberg 37eb1901f9 initctl: handle ~ECHONL properly in top command
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-08 14:36:15 +02:00
Joachim Wiberg 98c4e7764f initctl: fix boolean logic bug in -p top command option
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-08 14:27:36 +02:00
Joachim Wiberg d3e4463612 initctl: add missing signal.h include, required for musl libc
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-08 14:20:48 +02:00
Joachim Wiberg b812045d82 doc: add cgroup documentation
First draft of the new cgroup documentation.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-08 14:16:25 +02:00
Joachim Wiberg b1bcdc88e0 initctl: fix ordering issue for root task in ps/top/cgroup commands
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-08 13:17:40 +02:00
Joachim Wiberg 62c5a9d06d cgroup: add support for reserved cgroup 'root', for RT tasks
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-08 13:17:10 +02:00
Joachim Wiberg dcdc842336 Revert "Travis-CI: disable gcc for coverity scan run"
This reverts commit 73629944c0.
2021-04-08 12:15:08 +02:00
Joachim Wiberg 12eaa3073a fnwrite(): call fclose() separately, found by Coverity Scan
If any of the fputs() calls fails we will not call fclose() and thus
cause resource loss.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-07 14:32:12 +02:00
Joachim Wiberg 34875f57a5 Fix uninitialized stack variable, found by Coverity Scan
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-07 14:00:08 +02:00
Joachim Wiberg f0bf1343b0 initctl: skip return value for uev_*_init(), optional
We have these neat extras for added value, if they should fail, for
whatever reason, we still want to present 'top' to the user, which may
have to use 'reset' if exited improperly and lost cooked/cursor.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-07 13:57:43 +02:00
Joachim Wiberg 4e6b9514d5 cgroup: check return value from fnwrite(), found by Coverity Scan
We check it everywhere else, and a log message for failing to move PID 1
to the init cgroup is useful as well.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-07 13:55:07 +02:00
Joachim Wiberg 3b495d7518 cgroup: fix too small buffer for strlcpy(), found by Coverity Scan
Off by one, of course.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-07 13:54:34 +02:00
Joachim Wiberg badf8701bf cgroup: fix use before NULL check, found by Coverity Scan
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-07 13:53:56 +02:00
Joachim Wiberg 85fa0d4926 cgroup: fix resource leak, found by Coverity Scan
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-07 13:53:25 +02:00
Joachim Wiberg 3de9643893 fnwrite(): fix resource leak, found by Coverity Scan
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-07 13:26:56 +02:00
Joachim Wiberg 73629944c0 Travis-CI: disable gcc for coverity scan run
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-07 12:06:07 +02:00
Joachim Wiberg c97c83bfb6 cgroup: basic instrumentation of critical functions
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-07 11:58:48 +02:00
Joachim Wiberg 19b18afac9 cgroup: Skip mkdir() and subtree control if group already exists
- No point in doing it twice
 - Don't anger the gods (possible kernel bugs)

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-07 11:58:48 +02:00
Joachim Wiberg e3c424e129 Minor, rename internal variable
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-07 11:58:48 +02:00
Joachim Wiberg c0716d7f63 Minor optimization, drop expensive memset() ops
No need to zero out whole buffer for strlcat(), or other string check
ops.  Also drop a few completely useless memset() calls.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-07 11:58:41 +02:00
Joachim Wiberg d43af8c9c1 Minor optimization, use strdupa() for small alloc ops.
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-07 10:31:59 +02:00
Joachim Wiberg 2825100f77 initctl: add support for 'q' to quit from top (also signals)
- Set TTY in raw mode to be able read a single char at a time
 - Hide cursor
 - Trap 'q', Ctrl-C, Ctrl-\ and SIGTERM to restore TTY and cursor

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-07 10:08:13 +02:00
Joachim Wiberg b1bee31d61 Helper functions for setting TTY in raw and cooked mode
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-07 10:07:26 +02:00
Joachim Wiberg 522276b80d Minor, rename internal functions/variables screen_* -> tt*
- Shorter
 - Follows old UNIX tradition
 - Lines up with next commit

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-07 10:06:01 +02:00
Joachim Wiberg 7bc1470a1e Minor, rearrange functions in mode order
Only moved functions around.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-06 14:38:24 +02:00
Joachim Wiberg ca32cb0dfc cgroup: 'init' is a reserved leaf group with Finit
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-06 13:16:58 +02:00
Joachim Wiberg d59f55b90c initctl: new command 'cgroup' to show cgroup config
This is intended to be used with the 'top' command to aid in setting up
and verifying proper limits for services.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-06 12:03:20 +02:00
Joachim Wiberg 02936de993 initctl: initical conversion to use libuEv for top command
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-05 23:56:39 +02:00
Joachim Wiberg 8ed223343d getty: fix regression introduced in 5342881
Replacing write() with dprint() without thinking leads to duplicate
output in getty.  In particular '\n login: foo login: ".

Must check if length is > 0, or dprint() will calculate it on its own.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-04 12:54:35 +02:00
Joachim Wiberg 90f7ff1c23 initctl: new command 'reload NAME:ID' and new semantics for restart
This patch corrects a logical glitch, or design flaw, in initctl.  The
'restart FOO' command did not stop+start FOO only send SIGHUP (provided
FOO supports SIGHUP).  Hence, a new command 'reload FOO' is introduced,
which does exactly that, and 'restart FOO' now stops and restarts FOO.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-04 12:35:35 +02:00
Joachim Wiberg a56220f158 Mark result of chown() as don't-care for now
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-04 12:35:35 +02:00
Joachim Wiberg d40b426c1b Refactor, check return value from fgets()
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-04 12:35:35 +02:00
Joachim Wiberg 5342881bf4 Refactor, wrap write() syscall in new dprint() function
Fixes the GCC warning for unchecked return value from write():

  ... ignoring return value of ‘write’, declared with attribute warn_unused_result

The new dprint() function wraps write() in a bounded retry-loop that
catches EINTR.  The length argument is optional computed with strlen()
if omitted (zero).

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-04 12:35:35 +02:00
Joachim Wiberg c84c17ea8c initctl: initial support for -q,--quiet mode
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-04-04 12:35:35 +02:00
Joachim Wiberg f976b8261f Merge pull request #165 from troglobit/nohup-on-cmd-line-changed
Do a full restart rather than HUP if command line of a service has changed
2021-04-02 11:31:57 +02:00
Jacques de Laval 10f4c7fa18 Do a full restart rather than HUP if command line of a service has changed
By keeping track of when a full restart is needed, Finit can relieve
the user of having to track modifications to service configuration. This
also makes initctl reload easier to explain and reason about as the effect
of a reload should now be that any configuration updates to services will
be fully "commited" by initctl reload.

Signed-off-by: Jacques de Laval <Jacques.De.Laval@westermo.com>
2021-04-01 16:18:54 +02:00
Joachim Wiberg 665d212bd6 Add support for configuring cgroups and their settings on services
This patch adds support for modifying settings for the default cgroups;
init, user, and system, as well as adding up to a total of eight groups
for the system.

Services can now be assigned to a cgroup, with optional extra settings
for that particular process group.  The syntax is slightly contrivied
but follows the overall Finit syntax of prop:value,prop':value', e.g.

   cgroup maint cpu.weight:123,mem.max:10000

Starting with the introduction of rlimits, a group of services sharing
the same .conf file can share the same (locally "global") rlimits, and
now also the same cgroup, e.g.

    cgroup.maint
    service foo
    service bar cgroup:mem.max:1000

This puts foo and bar in the same top-level cgroup 'maint', with an
extra memory restriction on bar for max 1000 bytes memory.

NOTE: 'mem.' is a Finit extension, a shorthand for cgroups2 'memory.'

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-30 10:21:01 +02:00
Joachim Wiberg 9e6e653c57 plugins: pidfile: fix subtle memory leak
Since the introduction of the iwatch framework we can now safely free
the memory allocated by realpath() and prevent leaks in a more elegant
way than before.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-29 23:20:00 +02:00
Joachim Wiberg bda4da71a6 Fix touch-reload regression from 3bb1e41
When reloading we check if service .conf files have been modified since
the last time we read them.  In 3bb1e41 we changed it so we load only
the enabled/*.conf files, which led to our no longer properly detecting
changed files since we monitor changes in what the symlinks point to.

This patch fixes that by checking the target for changes.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-29 23:15:36 +02:00
Joachim Wiberg a24fc941a6 telinit: call initctl with '-b' to prevent screen size probing
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-29 22:23:34 +02:00
Joachim Wiberg f307ad060b Follow-up to 0641b1a, prevent hang regression in bootstrap
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-28 16:38:07 +02:00
Joachim Wiberg 1845b7be54 The unix(7) man page recommends using SOCK_SEQPACKET
Since Linux 2.6.4 the SOCK_SEQPACKET socket type is available for UNIX
domain sockets on Linux.  It is intended for; "a sequenced-packet socket
that is connection-oriented, preserves message boundaries, and delivers
messages in the order that they were sent." which sounds like us.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-25 17:26:55 +01:00
Joachim Wiberg a260e157eb Move external getty and sh to user cgroup
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-25 17:26:31 +01:00
Joachim Wiberg 0641b1a73e Split finalize() in two separate tasks
The finalize() function is a bit too long, which means it may block the
API socket initctl (from the final runlevel switch at the beginning) use
to contact os via.

We should perhaps break it up even more, but at least once like this to
give the event loop a chance to interleave with an API callback.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-25 17:24:32 +01:00
Joachim Wiberg 9ba57f0c9d iwatch: ignore EEXIST errors, we're already watching it
In particular this can happen from cgroup.c when multiple services map
to the same cgroup.events (due to being in the same cgroup)

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-25 17:22:42 +01:00
Joachim Wiberg 9c2f0b2dc8 initctl: finit may be busy, wait for it ...
When calling initctl early in the boot process, e.g. just when Finit is
switching to the final runlevel, it may take a few milliseconds for it
to actually be ready to process our request.

This patch adds poll() to both the write(REQ) and the read(RSP) steps
to prevent from getting weird errors when Finit is busy.  The timeout
is currently 2 sec in both directions, which should be enough.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-25 17:18:50 +01:00
Joachim Wiberg d4bbebeb93 plugins: hotplug: ensure we always call setup() *after* bootmisc
The bootmisc plugin creates lots of required system directories which
udev, and possibly also mdev, need to operate.  E.g., a system which
has an empty tmpfs for /var need to populate that before we run.

The plugin loader handled this dependency implicitly before, loading all
plugins in alphabetical order.  We should not rely on that for proper
operation.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-24 13:16:12 +01:00
Joachim Wiberg 1a22b4f0aa plugins: dbus: allow in all runlevels and start already in 'S'
This plugin should be able to start much earlier than on network UP,
it uses a UNIX domain socket to communicate so loopback should not be
needed.

Also, Finit supports runvels up to 9 (0 and 6 are special), so allow
dbus to run in all these runlevels.  It is up to the user/OS to set
any policy for what runlevels to use.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-24 13:13:35 +01:00
Joachim Wiberg 9c4d5341ae No env file, or optional ('-'), are both OK results
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-23 16:24:12 +01:00
Joachim Wiberg b9d498e01c initctl: fall back to .conf in /etc/finit.d if not in available/
For commands like `initctl show foo`, initctl looks in the available/
subdirectory for `foo.conf`.  This patch adds support for falling back
to return `/etc/finit.d/foo.conf` if the service doesn't exist in the
`/etc/finit.d/available/` subdirectory.

Static services, outside of the `enabled/` handling, live in the base
dirctory and this is what you expect from the tool.  "Do what I mean"

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-22 18:57:43 +01:00
Joachim Wiberg a1e38a3e40 cgroup: add missing pointer and result of fopen()
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-22 14:28:25 +01:00
Joachim Wiberg c0ae7763a6 initctl: ignore possibly missing cpu.stat in cgroup2 root
Older kernels (4.19) don't have the summary cpu.stat in the cgroup2
root, so let's ignore that problem and return zero.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-22 10:47:52 +01:00
Joachim Wiberg 9f98b1d3d1 Merge pull request #161 from yangfl/upstream
Fix build for some non-x86 archs
2021-03-20 19:45:54 +01:00
yangfl a7e2224f05 Fix build for some non-x86 archs
Ref:
https://buildd.debian.org/status/fetch.php?pkg=finit&arch=mips64el&ver=3.2%7Erc3-2&stamp=1609910244&raw=0
https://buildd.debian.org/status/fetch.php?pkg=finit&arch=sparc64&ver=3.2%7Erc3-2&stamp=1609869348&raw=0
2021-03-20 23:57:08 +08:00
Joachim Wiberg 3bb1e41394 Only check for dangling symlinks, load enabled/*.conf file
In debug mode it's highly confusing to see Finit load available/*.conf
files when you expect it to only load finit.conf and enabled/*.conf,
so let's keep the dangling symlink check to itself and actually load
and parse from enabled/ as it was intended :)

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-20 14:40:11 +01:00
Joachim Wiberg e437379939 Minor, style/clarify debug messages
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-20 14:39:49 +01:00
Joachim Wiberg 3ad4f6ef4b In garbage collect, don't clear conditions provided by new instances
Sneaky bug, when switching between different sets of configurations, a
new instance of a previously removed svc can have its condition removed
by svc_gc() of the old instance.  This patch prevents such accidents.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-20 14:27:01 +01:00
Joachim Wiberg 4170a61d0b Merge pull request #160 from troglobit/release
Forward port dirty vs enabled fixes from release branch
2021-03-19 17:23:36 +01:00
Joachim Wiberg b3c5ab41e7 Merge pull request #159 from troglobit/fix-dirty-removed-svc-restarting
Store removal status separate from dirty
2021-03-19 17:11:55 +01:00
Jacques de Laval b3fad1077e Store removal status separate from dirty
Having removal status stored in the dirty status resulted in removal
status being forgotten when a service was marked as dirty, for instance
when a dependency was updated. This side effect of marke_dirty seems a bit
unexpected and instead of adding exceptions to the logic for when marking
a service dirty - let's separate the two things (dirty and removed) from each
other.

Signed-off-by: Jacques de Laval <Jacques.De.Laval@westermo.com>
2021-03-19 16:53:04 +01:00
Joachim Wiberg 522e1f57d7 Merge branch 'release' 2021-03-19 10:01:55 +01:00
Joachim Wiberg d00a53dfbf Bump version for v4.0-rc3
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-19 09:53:26 +01:00
Joachim Wiberg ff86f29f41 initctl: add Memory: and CGroup: to process status command
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-19 09:33:52 +01:00
Joachim Wiberg 3107027132 cgutil: new functions to query a cgroup from pid and get memory use
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-19 09:33:42 +01:00
Joachim Wiberg 728db73b09 cgutil: export more functions to initctl
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-19 09:32:36 +01:00
Joachim Wiberg fcb8ec9967 Refactor, factor out and export memsz() util function
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-19 09:30:52 +01:00
Joachim Wiberg 5b8fe12502 cgroup: error handling for critical operations
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-19 09:29:27 +01:00
Joachim Wiberg 6e24f2ff13 echo(): refactor and rename helper function -> fnwrite()
More often than not, the file to write to in sysfs changes rather than
the value.  This patch changes echo() into a fnwrite(), flipping what
is vsnprintf()'ed, and adds a stupid str() function that converts any
value (float/int/double/uint64_t) to a static string buffer.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-18 18:25:11 +01:00
Joachim Wiberg 74d715243c sanitize(): avoid strlen() to check string for NUL termination
The strlen() function can easiliy go out of bounds.  Use memchr()
instead, we have the max buffer len as argument anyway.

Also fix call to sanitize() which used wrong length.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-18 18:23:50 +01:00
Joachim Wiberg d9993860cb cgroup: add inotify support for cgroup.events
Replaces previous cgreaper.sh functionality for release notification and
cleanup of service groups.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-18 18:23:38 +01:00
Joachim Wiberg 6a6f3a8291 cgroup: refactor for cgroups v2, much cleaner + unified hieararchy
Since the cgroups support in Finit is not yet officially released, we
decided to change the back-end to use cgroups v2 instead of the aging
and rather clumsy cgroups v1.  Even this initial refactor is a lot
easier to read and understand, more can still be done since there's
a lot of concepts, data values and the ilk that can now be shared
between different controllers.

Still ToDo: inotify for cgroup.events to clean up leaf nodes, which
            in cgroups v1 was handled by cgreaper.sh.  This is fixed
	    in the next commit in the series.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-18 18:23:35 +01:00
Joachim Wiberg 99a8cf3eb7 initctl: add -1,--once flag for top command
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-16 23:09:01 +01:00
Joachim Wiberg da95c7d80e initctl: ensure lines don't overflow in top command
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-16 23:07:14 +01:00
Joachim Wiberg a9f7f692a9 initctl: add more columns to top command; VmSize, RSS, VmLib, %MEM
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-16 16:49:08 +01:00
Joachim Wiberg ce55f88a00 cgroup: add symlinks for traditional split controller world
Even systemd have collapsed a few of the cgroup controllers into a
semi-unified hierarchy and uses this approach.  We just take it to
the extreme and have collapsed all of them (like cgroup v2).

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-16 16:47:08 +01:00
Joachim Wiberg 74a26f559d initctl: refactor, split into multiple files
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-16 09:23:04 +01:00
Joachim Wiberg 08144df5ea initctl: fix %CPU listing bug and use hash table for faster lookup
Two major bugs: `if (!cg)` and missing `strdup(path)`.

Also convert to use std hash table for lookup of previous cpu load value
for a given cgroup path.  The hash table is sized after the current num.
rows on the screen -- resize currently not supported.  The value given
to hcreate() should be 25% greater than the estimated num of entries,
but we take a wild guess just to make sure we don't run out of space at
runtime.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-15 13:43:37 +01:00
Joachim Wiberg 230c64927b initctl: add very bare-bones cgroup based top command
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-15 02:21:43 +01:00
Joachim Wiberg d1e56f300d initctl: show cgroup cpu.shares and memory.usage in ps command
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-14 22:16:20 +01:00
Joachim Wiberg 9842786453 cgroups: fix cpu.shares assignment and set memory hierarchy
- Fix obvious refactor mistake in cpu.shares assignment
- For unified memory hierarchy we need to set .use_hierarch=1

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-14 12:27:46 +01:00
Joachim Wiberg 6d0c679e05 initctl: show comm and cmdline in ps output
The ps command currently only lists processes in the three main control
groups: init, system, user.  Kernel threads are not show at all.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-14 11:12:42 +01:00
Joachim Wiberg 5428dea5bf cgroup: refactor, use a unified hierarchy for finit
As of now, the default finit cgroup behavior is to use a unified
hierarchy of controllers under /sys/fs/cgroup/finit.

We mount cpu,cpuacct,cpuset,memory (if available) and gain the
ability to control our three major groups: init, system, user.

The default CPU share setup is ~10% for init and user, and 90% for
system.  These are guaranteed CPU shares to ensure we do not starve
PID 1 or user processes.  Support for configuring these limits will
be added in a later commit.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-14 11:07:13 +01:00
Joachim Wiberg 4e84ecae89 Set umask(022) early, in fs_init(), and no place else
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-14 11:05:12 +01:00
Joachim Wiberg 959c9fe5aa plugins: restore previous umask() after plugin ops
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-14 11:04:29 +01:00
Joachim Wiberg 03d8ef9c8f doc: drop malplaced comment
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-13 09:45:37 +01:00
Joachim Wiberg 084b4ce8d3 cgroup: minor refactor/simplify
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-13 09:40:52 +01:00
Joachim Wiberg 31cae6a56d plugins: dbus: simplify, use mksubsys(), run as messagebus user
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-13 09:26:14 +01:00
Joachim Wiberg 1fd45c6f2e plugins: bootmisc: refactor, use mksubys() and simplify
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-13 09:26:14 +01:00
Joachim Wiberg 46995fe446 Add mksusbys() to helpers.c, a kind-of tmpfiles.d in C
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-13 00:37:47 +01:00
Joachim Wiberg 600b2874e6 initctl: add bug report address to usage text, like finit -h
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-12 17:08:36 +01:00
Joachim Wiberg b080b970b7 initctl: don't warn on missing env file if it's optional
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-12 17:08:12 +01:00
Joachim Wiberg 6106574e13 initctl: minor refactor, use systemf() instead of snprintf+system
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-12 16:49:01 +01:00
Joachim Wiberg 2385a1209b initctl: don't fall back to default command for wrong commands
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-12 16:48:58 +01:00
Joachim Wiberg e8b942cf95 Fix regression in starting built-in services, introduced in 5b9d990
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-12 16:28:16 +01:00
Joachim Wiberg ac17d7f5a7 Silence output from gzip in logrotate()
- system may not have gzip (we're opportunistic)
- system may not have the log file (yet)

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-12 13:26:50 +01:00
Joachim Wiberg 1edc4356a6 initctl: improve error message for unprivileged users
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-12 13:26:16 +01:00
Joachim Wiberg 9f06a2db99 Silence developer API debug message
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-12 13:25:50 +01:00
Joachim Wiberg cfb3a9f2b9 plugins: pidfile: reduce log noise
With the new practise of keeping record of process pid files, we no
longer need to log/update when reading back the same PID we already
have on file.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-12 00:35:13 +01:00
Joachim Wiberg 8aba63a9e3 Track oldpid of services to fix empty pid in restart message
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-12 00:13:15 +01:00
Joachim Wiberg 3d98ad293b Restore telinit symlink to finit, compat only
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-11 23:59:39 +01:00
Joachim Wiberg 156e86f395 Revert "Travis-CI: disable clang temporarily for Coverity Scan run"
This reverts commit d859ecd21d.
2021-03-11 22:28:41 +01:00
Joachim Wiberg d859ecd21d Travis-CI: disable clang temporarily for Coverity Scan run
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-11 22:04:56 +01:00
Joachim Wiberg cbec78dbbc initctl: show pid file and condition for foo in 'status foo' command
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-11 22:01:42 +01:00
Joachim Wiberg 572291a1d9 Don't guess pid file name, either there's one declared or not
The previous patch just added dynamic tracking of non-declared pid
files, so we no longer need to make stuff up.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-11 22:00:29 +01:00
Joachim Wiberg 280608f30e plugins: pidfile: track PID file in svc, if svc has none declared
Services that create their own PID files usually don't declare one with
Finit.  This patch adds support to track those PID files anywayt at
runtime for the purpose of identifying match svc_t when a PID file is
removed, i.e. when a service exits.

 - On IN_CREATE the pidfile.so plugin saves the pid file name in svc_t
 - On ON_DELETE the pidfile.so plugin finds svc_t based on pid file

Quicker tracking and less dead code, win-win.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-11 21:56:49 +01:00
Joachim Wiberg 5c4146cfe4 Export pid_file_set() function, useful to other subsystems as well
Rename, refactor, and export.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-11 21:52:44 +01:00
Joachim Wiberg 30e3f5a33c Wait only one second at shutdown/reboot for lingering processes
Transitioning to runlevel 0 or 6 handles graceful shutdown of any
managed run/task/sysv/services.  So we can replace the old 2 sec delay
with a shorter one for any non-managed still lingering process.

Also, some minor cleanup.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-11 21:48:49 +01:00
Joachim Wiberg 2c12379a30 Only reload .conf files when not going to shutdown or reboot
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-11 21:47:22 +01:00
Joachim Wiberg 5f026c8149 initctl: when svc has status missing, highlight what is missing
To aid with debugging, highlight if env file, binary, or both are the
missing component(s) and causing status 'missing'.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-11 15:58:36 +01:00
Joachim Wiberg 90005235e8 initctl: minor, rename local variable
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-11 15:11:16 +01:00
Joachim Wiberg 6b688c4211 Refactor, share env helper fns with initctl
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-11 15:10:10 +01:00
Joachim Wiberg bdf5f8fc90 initctl: show halted state status reason in bold everywhere
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-11 14:35:09 +01:00
Joachim Wiberg 79f7a8ccfb Reclaim 900 msec in boot time from final_worker() at bootstrap
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-11 14:03:15 +01:00
Joachim Wiberg 3b19db04e3 initctl: add cond, user, group and visual hints for status command
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-11 12:52:05 +01:00
Joachim Wiberg 93402b81d7 initctl: disable ctrl chars also in runlevel_string() when -p
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-11 12:51:23 +01:00
Joachim Wiberg 6dec4c9ca0 Set default user/group for services that don't specify any
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-11 12:49:14 +01:00
Joachim Wiberg 548acf27cf Minor refactor, rename RESPAWN_MAX -> SVC_RESPAWN_MAX
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-11 12:48:44 +01:00
Joachim Wiberg cd0bc57ca8 Clear stale PID conditions when a service stops
Protect against corner cases where pid conditions are not cleaned up.
We don't want such conditions to remain asserted when the process has
terminated.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-11 11:44:23 +01:00
Joachim Wiberg 11a3318c02 Properly set status 'missing' for missing binaries and/or env files
When we try to start a service/run/task we call whichp() to see if the
binary exists, either tha absolute path given in the .conf file, or in
the $PATH we run with.  If binary, or the env: file, doesn't exist we
now set svc_missing() state.

On `initctl reload` we unblock the service to be able to check again.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-11 11:44:23 +01:00
Joachim Wiberg 2711b27971 plugins: pidfile: tricky zebra doesn't close its pid file
This patch fixes a few really hard problems wrt PID files:

 1. Listening for IN_CREATE events means we get notified immediately by
    the kernel when someone calls open()/fopen() on a PID file.  Reading
    the contents returns 0, thank you atoi() ... so we drop IN_CREATE
    and instead look for IN_CLOSE_WRITE, there fixed it!  Not quite ...

 2. Some programs, like Zebra, and other Quagga/Frr daemons, don't
    close() their PID files after creation.  Instead they ftruncate()
    and keep them open, and locked.  Presumably to get a mechanism to
    detect already running instances -- messes life up a bit for the
    rest of us though.  So we need to read files after IN_MODIFY too.

 3. We also want to track IN_DELETE so we can deassert conditions when
    services exit gracefully and clean up their PID files

The rest fo the commit is debug instrumentation changes.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-11 11:44:23 +01:00
Joachim Wiberg 05ac9c18c9 Update changelog, new inictcl cond set|clear commands
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-11 11:44:23 +01:00
Joachim Wiberg 1a7092f545 doc: update with new 'initctl cond set|clear foo' commands
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-11 11:44:23 +01:00
Joachim Wiberg 8000d361b3 initctl: restore 'cond [set|clr] foo' for user-defined conditions
In 7447192 we dropped support for 'cond set' and 'cond clear' commands
with the motivation they were unsafe and sent the wrong message to the
user.  That was true, but mostly because it was too generic and required
the user to call `initctl reload` to apply the changes.

This patch restores the behavior, albeit in a very reduced and simple
format.  All conditions set with this command are constrained to the
'usr/...' namespace.  No subdirectories are allowed.  The argument to
the 'cond set|clear' command is disallowed if it contains '/' or '.'
but anything else is supported, for example:

    initctl cond set foo:2

creates a static/oneshot condition in /run/finit/cond/usr/foo:2

These conditions are static and are fully handled by the user.  The
initctl command is the recommended, and only supported, way of setting
and clearing usr conditions.

This patch also includes a new plugin, usr.so, which is a very simple
inotify plugin for the /run/finit/cond/usr/ directory.  When files are
created or removed here the plugin tells the Finit condition engine to
update and trigger service changes.

For instance, the following service is not started by default at boot:

    service <usr/foo> myservice -- MyService

However, as soon as `initctl cond set foo` is called, myservice starts.
Consequently, it is stopped when `initctl cond clr foo` is called.

Another major difference from the original is that this implementation
doesn't send IPC commands to create/delete the conditions.  This makes
calling these new commands non-blocking so they can be used very early
in the bootstrap, by plugins, if needed.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-11 11:44:23 +01:00
Joachim Wiberg e3c8febe3b Refactor; common nomenclature, ordering, possib. security fix
- Use _PATH_foo for all condition paths, *with* trailing /
- Read condition file first, may not exist, in which case we save time
- Change from libte makepath() to mkpath(), this changes from hard-coded
  0777 perms on all cond dirs to 0755 -- possible security fix

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-11 11:44:23 +01:00
Joachim Wiberg 32ca117949 initctl: refactor command line parser, use concept from mroutectl
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-11 11:44:23 +01:00
Joachim Wiberg b966d031c8 initctl: enable plain mode for ls and utmp commands
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-09 21:30:11 +01:00
Joachim Wiberg 905c2678a3 Fix path to fallback console and handle leading /dev from cmdline
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-08 09:33:16 +01:00
Joachim Wiberg 7d429bdbb1 initctl: restore -p,--plain output for headings and ps listing
This is the same output style as used in the mroutectl and pimctl tools.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-07 23:30:13 +01:00
Joachim Wiberg ccfea59cb3 Bump version for Finit v4.0-rc2 release
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-07 18:50:50 +01:00
Joachim Wiberg 7b315364ca Update initctl help text, and output, relocate screenshot
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-07 15:38:23 +01:00
Joachim Wiberg e9e28ece1c Add Finit4 + Alpine screenshot
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-07 15:28:32 +01:00
Joachim Wiberg c1f9b4e1f6 Use .svg for Travis-CI status badge
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-07 15:17:26 +01:00
Joachim Wiberg 6ebb23e0f0 Travis-CI: Minor, adjust configure line for Coverity
- Drop commented-out sudo:true
- Drop unnecessary configure option

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-07 15:16:26 +01:00
Joachim Wiberg 026c229005 Revert "Travis-CI: disable clang and unit tests for Coverity Scan run"
This reverts commit c71bafd495.
2021-03-07 15:14:47 +01:00
Joachim Wiberg 4d05bf9359 Mark affected services as dirty if their rdeps are dirty
Provided a configuration that looks like this:

ospfd.conf:
    service [2345] <!pid/zebra> log ospfd -A 127.0.0.1 -u root -g root -- OSPF daemon

zebra.conf:
    service [2345] <!> log zebra -A 127.0.0.1 -u root -g root -- Zebra Routing daemon

If zebra.conf is changed, we restart it when `initctl reload` is issued.

This change ensures that ospfd is also restarted, because ospfd depends
on zebra, we must restart it too.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-07 14:52:19 +01:00
Joachim Wiberg 289247dab9 plugins: netlink: slightly stricter ifname validation
Check if ifname contains double periods, this should *not* be a valid
name, though eth0.10 is, et0..10 is not.  Should protect better against
directory traversal attacks.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-07 13:25:40 +01:00
Joachim Wiberg e44dfde54e plugins: tty: validate against read() length, not buffer size
Fix ev->len validation; must check against sz read(), not total buffer
size.  Also, fix off-by-one in comparison.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-07 12:55:12 +01:00
Joachim Wiberg 35b200d3a9 Validate inotify event against read() length, not buffer size
Fix ev->len validation; must check against sz read(), not total buffer
size.  Also, fix off-by-one in comparison.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-07 12:55:12 +01:00
Joachim Wiberg 5badf4d376 plugins: pidfile: validate against read() length, not buffer size
Fix ev->len validation; must check against sz read(), not total buffer
size.  Also, fix off-by-one in comparison.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-07 12:48:42 +01:00
Joachim Wiberg 24f274c126 plugins: netlink: validate interface name
Check for spaces and slashes in interface name to prevent path based
attacks.  Found by Coverity Scan.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-07 12:23:24 +01:00
Joachim Wiberg 1abd43384b plugins: netlink: minor refactor, collapse for-loop
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-07 12:20:59 +01:00
Joachim Wiberg 70a1acc210 Highly unlikekly, but chdir() needs to be checked
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-07 11:40:25 +01:00
Joachim Wiberg 6af0446490 plugins: netlink: fix untrusted loop bound, found by Coverity Scan
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-07 11:28:39 +01:00
Joachim Wiberg ecaf111a4b plugins: tty: possible out-of-bounds read in inotify_event parser
This is a major refactor to use the same construct as in the pidfile.so
plugin to parse kernel inotify events for when TTYs are added removed
from the system.

Found by Coverity Scan.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-07 10:58:55 +01:00
Joachim Wiberg 32ec25b070 Check return value from remove(), found by Coverity Scan
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-07 10:34:23 +01:00
Joachim Wiberg 305ad302f2 Refactor, reduce code duplication
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-07 10:28:54 +01:00
Joachim Wiberg d6390244ad Fix possible out-of-bounds read in inotify_event parser
Found by Coverity Scan.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-07 09:57:07 +01:00
Joachim Wiberg 790a316607 Log rotate: improved handling of return values from syscalls
- Align the two implementations in logit.c and utmp-api.c
 - Use libite APIs to handle common constructs
 - If gzip fails, don't remove rotated-to file
 - Don't try gzip if rename fails
 - Issues found by Coverity Scan

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-07 09:57:07 +01:00
Joachim Wiberg 77aa941e84 Mounting devtmpfs may fail if already mounted
Ignore EBUSY errors, the kernel has the ability to automount /dev as
soon as the rootfs has been mounted.  This may be added to procfs and
sysfs later, so we make this a general change in fs_init().

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-07 09:48:02 +01:00
Joachim Wiberg e0a65f67c9 Minor, staticify, reduce includes and allow debug to kmsg
The loglevel setting should control all logging, regardless of
where we target it.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-06 23:55:54 +01:00
Joachim Wiberg 3ed291789c Fix GCC warnings with _FORTIFY_SOURCE=2
- Decleare some return values with (void)fn(), for cases where
  we don't care (dropping table headers), or best effor
- Check return value from fgets() and chdir() in some cases that
  are valid, i.e., continuing execution is pointless

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-05 12:36:48 +01:00
Joachim Wiberg 774a24cdd8 Allow building with -D_FORTIFY_SOURCE[=1,2]
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-05 11:17:59 +01:00
Joachim Wiberg 6011f91f22 Fix possible out-of-bounds read in inotify_event parser
Found by Coverity Scan.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-05 11:16:37 +01:00
Joachim Wiberg 07a364e570 initctl: fix use of possibly unterminated string, found by Coverity
No point in using rq.data, which could have been modified, instead use
the input argument to the function in the error message.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-05 10:51:25 +01:00
Joachim Wiberg 5b9d99011b Fix long-standing bug in reset of rlimits between reconf
While skimming through the results of the latest Coverity Scan, I
discovered that that the reset logic of global rlimits was broken.
This it seems to have been since its first introduction in Finit.

We fix this by reading initial rlimits at bootstrap, then for each
reconf, including the first, we seed global rlimits with the initial
ones -- thus resetting between each reconf.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-05 10:44:01 +01:00
Joachim Wiberg f4f773b4c7 Initialize fallback svc_t in client comms, found by Coverity Scan
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-05 10:35:12 +01:00
Joachim Wiberg 9d949c4186 Fix possible NULL ptr deref in cmdline option parser
Found by Coverity Scan.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-05 10:21:58 +01:00
Joachim Wiberg 1434561a46 initctl: fix cut-and-paste error in new 'show' command
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-05 10:17:52 +01:00
Joachim Wiberg cf3d3f6f8e Properly check return value from mount(2) and display error message
Found by Coverity Scan.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-05 10:15:46 +01:00
Joachim Wiberg 621da582c2 Fix obvious bug in ismnt() found by Coverity Scan
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-05 10:10:45 +01:00
Joachim Wiberg 9167d9255d Work around weird finding from Coverity Scan
The utmp_set() function allows id==NULL, so default the line to NULL and
avoid parsing empty lines.  Which is better code anyway.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-05 09:59:58 +01:00
Joachim Wiberg c71bafd495 Travis-CI: disable clang and unit tests for Coverity Scan run
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-05 08:25:32 +01:00
Joachim Wiberg b3b7a33252 initctl: developer mode, hidden command
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-05 08:22:38 +01:00
Joachim Wiberg d1efc60c84 initctl: add show command to cat foo.conf, default finit.conf
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-05 08:06:01 +01:00
Joachim Wiberg 9a24dfd98d initctl: refactor command composition for status command
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-05 00:13:01 +01:00
Joachim Wiberg 0e3fe5e3bf initctl: fix too long args list to status command
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-05 00:06:36 +01:00
Joachim Wiberg 224f42c344 cgreaper.sh: drop log message when cleaning up
Mostly used during development, doesn't really provide any value to the
user at normal runtime.  Leave it commented out though so user can do
debug themselves if needed.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-04 23:57:48 +01:00
Joachim Wiberg e60eb94810 initctl: complete rewrite of cgroup dumper in 'ps' command
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-04 23:49:42 +01:00
Joachim Wiberg 464bc831a5 Minor refactor, create FINIT_CGPATH in finit.h to reduce duplicaiton
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-04 23:48:57 +01:00
Joachim Wiberg e84911fe52 cgroup: create 'name' or 'name:id' entries, not 'name:'
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-04 23:46:25 +01:00
Joachim Wiberg 4bcfd606b4 Refactor screen_init(), use methods developed in pimd project
- Refactor screen_init()
  - use native impl. of TTY probing from pimd project
    - check if TIOCWINSZ works
    - check if we're running in watch(1), for initctl
  - check if ANSI goto(999,999) escape seq. works (invasive)
  - fallback to 80x24
- Drop screen_exit()
- Rename screen_init() to get_width(), for now, matching pimd
- Relocate call in main() to banner(), first fn to write to TTY

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-04 23:23:31 +01:00
Joachim Wiberg fe27ed17eb initctl: status command formatting updates, add origin .conf file
Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-04 07:27:06 +01:00
Joachim Wiberg b3ea23ed26 initctl: drop old 'job:id' format support, canonical is 'name:id'
With the recent changes to the condition handling it has become more and
more evident that the canonical reference for a task/run/service is the
NAME:ID representation.  Up until now we've kept the older JOB:ID for
some sort of compatibility fallback.

This patch removes the support to simplify maintenance going forward.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
2021-03-04 07:23:19 +01:00
81 changed files with 4368 additions and 1751 deletions
+10 -13
View File
@@ -5,9 +5,6 @@ language: c
# Use docker for quicker builds, it now allows https://docs.travis-ci.com/user/apt/
sudo: false
# Use non-docker builds atm. to install libuEv and libite from source
#sudo: true
# Test build with both GCC and Clang (LLVM)
compiler:
- gcc
@@ -30,7 +27,7 @@ addons:
name: "troglobit/finit"
description: "finit | Fast & Extensible init for Linux"
notification_email: troglobit@gmail.com
build_command_prepend: "./autogen.sh && ./configure --prefix=/tmp"
build_command_prepend: "./autogen.sh && ./configure --prefix= --disable-doc --disable-contrib --with-watchdog"
build_command: "make"
branch_pattern: dev
@@ -45,20 +42,20 @@ install:
# Custom build script for the time being, no "make test" yet
script:
- ./autogen.sh
- ./configure --prefix=/tmp --enable-static
- ./configure --prefix= --enable-static
- make clean
- make V=1 -j5
- ./configure --prefix=/tmp --enable-x11-common-plugin --enable-fallback-shell --enable-watchdog --enable-logit
- ./configure --prefix= --enable-x11-common-plugin --with-watchdog
- cat config.log
- make clean
- make V=1 -j5
- make install-strip
- tree /tmp
- ldd /tmp/sbin/finit
- size /tmp/sbin/finit
- size /tmp/sbin/initctl
- size /tmp/sbin/reboot
- LD_LIBRARY_PATH=/tmp/lib /tmp/sbin/initctl -h
- make install-strip DESTDIR=/tmp/finit
- tree /tmp/finit
- ldd /tmp/finit/sbin/finit
- size /tmp/finit/sbin/finit
- size /tmp/finit/sbin/initctl
- size /tmp/finit/sbin/reboot
- LD_LIBRARY_PATH=/tmp/lib /tmp/finit/sbin/initctl -h
- unshare -V
- nsenter -V
- chroot --version
+4 -1
View File
@@ -4,7 +4,7 @@ Change Log
All relevant changes are documented in this file.
[4.0][UNRELEASED] - 2021-02-21
[4.0][UNRELEASED] - 2021-03-xx
------------------------------
This release became v4.0, and not v3.2, because of incompatible changes
@@ -18,6 +18,9 @@ make sure to read the whole changelog when upgrading.
with a fallback to sending signals as per traditional SysV init. The
`-f` (force) flag remains, where `reboot(2)` is called directly
* Introducing Finit progress 𝓜𝓸𝓭𝓮𝓻𝓷
* The `inictl cond set|clear COND` have changed completely. Constrained
to a flat `<usr/...>` namespace and automatically activated by a new
`usr.so` plugin that checks services for usr condition changes
* Removed built-in inetd super server. If you need this functionality,
use an external inetd, like xinetd, instead. A pull request for a
stand-alone inetd, like watchdogd and getty, is most welcome!
+183 -53
View File
@@ -26,6 +26,25 @@ Finit is a simple alternative to [SysV init][4] and [systemd][6]. It
was reverse engineered from the [EeePC fastinit][] over ten years ago
by [Claudio Matsuoka][] — "gaps filled with frog DNA …"
![Alpine screenshot](img/finit4-screenshot.png)
*Figure 1: Screenshot showing Finit booting [Alpine Linux](https://www.alpinelinux.org/).*
Features include:
* Runlevels
* One-shot tasks, daemons, or SysV init scripts
* Runparts and rc.local
* Process supervision
* Sourcing environment files
* Conditions for network/process/custom dependencies
* Pre/Post script actions
* Tooling to enable/disable services
* Built-in getty
* Built-in watchdog, with support for hand-over to [watchdogd](https://troglobit.com/watchdogd.html)
* Built-in support for Debian/BusyBox `/etc/network/interfaces`
* Cgroups v2, both configuration and monitoring in `initctl top`
* Plugin support for customization
Focus is on small and embedded systems, although Finit is fully usable
on server and desktop systems as well. For working examples, see the
[contrib/](contrib/) section with tutorials for:
@@ -34,9 +53,6 @@ on server and desktop systems as well. For working examples, see the
* [Alpine Linux](contrib/alpine/), and
* [Debian GNU/Linux](contrib/debian/)
![Alpine screenshot](img/alpine-screenshot.png)
The screenshot shows [Alpine Linux](https://www.alpinelinux.org/).
Example
-------
@@ -58,10 +74,10 @@ runlevel 2
log size=100k count=4
# Services to be monitored and respawned as needed
service [S12345] watchdogd -L -f -- System watchdog daemon
service [S12345] syslogd -n -b 3 -D -- System log daemon
service [S12345] <pid/syslogd> klogd -n -- Kernel log daemon
service [2345] lldpd -d -c -M1 -H0 -i -- LLDP daemon (IEEE 802.1ab)
service [S12345] env:-/etc/conf.d/watchdog watchdog $WATCHDOG_OPTS $WATCHDOG_DEV -- System watchdog daemon
service [S12345] env:-/etc/conf.d/syslog syslogd -n $SYSLOGD_OPTS -- System log daemon
service [S12345] <pid/syslogd> env:-/etc/conf.d/klogd klogd -n $KLOGD_OPTS -- Kernel log daemon
service [2345] env:-/etc/conf.d/lldpd lldpd -d $LLDPD_OPTS -- LLDP daemon (IEEE 802.1ab)
# The BusyBox ntpd does not use syslog when running in the foreground
# So we use this trick to redirect stdout/stderr to a log file. The
@@ -76,24 +92,24 @@ service :80 [2345] merecat -n -p 80 /var/www -- Web server
service :8080 [2345] merecat -n -p 8080 /var/www -- Old web server
# Alternative method instead of below runparts, can also use /etc/rc.local
#task [S] /etc/init.d/keyboard-setup start -- Setting up preliminary keymap
#task [S] /etc/init.d/acpid start -- Starting ACPI Daemon
#task [S] /etc/init.d/kbd start -- Preparing console
#sysv [S] /etc/init.d/keyboard-setup -- Setting up preliminary keymap
#sysv [S] /etc/init.d/acpid -- Starting ACPI Daemon
#task [S] /etc/init.d/kbd -- Preparing console
# Run start scripts from this directory
# runparts /etc/start.d
# Virtual consoles run BusyBox getty, keep kernel default speed
tty [12345] /sbin/getty -L 0 /dev/tty1 linux
tty [12345] /sbin/getty -L 0 /dev/tty2 linux
tty [12345] /sbin/getty -L 0 /dev/tty3 linux
tty [12345] /sbin/getty -L 0 /dev/tty1 linux nowait noclear
tty [2345] /sbin/getty -L 0 /dev/tty2 linux nowait noclear
tty [2345] /sbin/getty -L 0 /dev/tty3 linux nowait noclear
# Use built-in getty for serial port and USB serial
tty [12345] /dev/ttyAMA0 noclear nowait
tty [12345] /dev/ttyUSB0 noclear
#tty [12345] /dev/ttyAMA0 noclear nowait
#tty [12345] /dev/ttyUSB0 noclear
# Just give me a shell, I need to debug this embedded system!
tty [12345] @console noclear nologin
#tty [12345] console noclear nologin
```
The `service` stanza, as well as `task`, `run` and others are described
@@ -232,8 +248,11 @@ For more information, see [doc/plugins.md](doc/plugins.md).
By default, Finit monitors `/etc/finit.d/` and `/etc/finit.d/enabled/`
registering any changes to `.conf` files. To activate a change the user
must call `initctl reload`, which reloads all modified files, stops any
removed services, starts new ones, and restarts any modified ones, with
SIGHUP if the process supports it.
removed services, starts new ones, and restarts any modified ones. If the
command line arguments of a service have changed, the process will be
terminated and then started again with the updated arguments. If the arguments
have not been modified and the process supports SIGHUP, the process will
receive a SIGHUP rather than being terminated and started.
For some use-cases the extra step of calling `initctl reload` creates an
unnecessary overhead, which can be removed at build-time using:
@@ -241,6 +260,46 @@ unnecessary overhead, which can be removed at build-time using:
configure --enable-auto-reload
**Cgroups**
Finit supports cgroups v2 and comes with the following default groups
in which services and user sessions are placed in:
/sys/fs/cgroup
|-- init/ # cpu.weight:100
|-- system/ # cpu.weight:9800
`-- user/ # cpu.weight:100
Finit itself and its helper scripts and services are placed in the
top-level leaf-node group `init/`, which also is _reserved_.
All run/task/service/sysv processes are placed in their own sub-group
in `system/`. The name of each sub-group is taken from the respective
`.conf` file from `/etc/finit.d`.
All getty/tty processes are placed in their own sub-group in `user/`.
The name of each sub-group is taken from the username.
A fourth group also exists, the `root` group. It is also _reserved_ and
primarily intended for RT tasks. If you have RT tasks they need to be
declared as such in their service stanza like this:
service [...] <...> cgroup.root /path/to/foo args -- description
or
cgroup.root
service [...] <...> /path/to/foo args -- description
service [...] <...> /path/to/bar args -- description
See [doc/config.md](doc/config.md#cgroups) for more information, e.g.,
how to configure per-group limits.
The `initctl` tool has three commands to help debug and optimize the
setup and monitoring of cgroups. See the `ps`, `top`, and `cgroup`
commands for details.
Runparts & /etc/rc.local
------------------------
@@ -348,11 +407,18 @@ Finit also implements a modern API to query status, and start/stop
services, called `initctl`. Unlike `telinit` the `initctl` tool does
not return until the given command has fully completed.
```shell
~ $ initctl -h
```
alpine:~# initctl help
Usage: initctl [OPTIONS] [COMMAND]
Options:
-b, --batch Batch mode, no screen size probing
-c, --create Create missing paths (and files) as needed
-f, --force Ignore missing files and arguments, never prompt
-1, --once Only one lap in commands like 'top'
-p, --plain Use plain table headings, no ctrl chars
-q, --quiet Silent, only return status of command
-t, --no-heading Skip table headings
-v, --verbose Verbose output
-h, --help This help text
@@ -360,29 +426,42 @@ Commands:
debug Toggle Finit (daemon) debug
help This help text
version Show Finit version
list List all .conf in /etc/finit.d/
enable <CONF> Enable .conf in /etc/finit.d/available/
disable <CONF> Disable .conf in /etc/finit.d/[enabled/]
touch <CONF> Mark .conf in /etc/finit.d/ for reload
reload Reload *.conf in /etc/finit.d/ (activates changes)
cond show Show condition status
ls | list List all .conf in /etc/finit.d
create <CONF> Create .conf in /etc/finit.d/available
delete <CONF> Delete .conf in /etc/finit.d/available
show <CONF> Show .conf in /etc/finit.d/available
edit <CONF> Edit .conf in /etc/finit.d/available
touch <CONF> Change .conf in /etc/finit.d/available
enable <CONF> Enable .conf in /etc/finit.d/available
disable <CONF> Disable .conf in /etc/finit.d/enabled
reload Reload *.conf in /etc/finit.d (activate changes)
cond set <COND> Set (assert) user-defined condition +usr/COND
cond clear <COND> Clear (deassert) user-defined condition -usr/COND
cond status Show condition status, default cond command
cond dump Dump all conditions and their status
log [NAME] Show ten last Finit, or NAME, messages from syslog
start <JOB|NAME>[:ID] Start service by job# or name, with optional ID
stop <JOB|NAME>[:ID] Stop/Pause a running service by job# or name
restart <JOB|NAME>[:ID] Restart (stop/start) service by job# or name
status <JOB|NAME>[:ID] Show service status, by job# or name
status | show Show status of services, default command
start <NAME>[:ID] Start service by name, with optional ID
stop <NAME>[:ID] Stop/Pause a running service by name
reload <NAME>[:ID] Reload service by name (SIGHUP or restart)
restart <NAME>[:ID] Restart (stop/start) service by name
status <NAME>[:ID] Show service status, by name
status Show status of services, default command
cgroup List cgroup config overview
ps List processes based on cgroups
top Show top-like listing based on cgroups
runlevel [0-9] Show or set runlevel: 0 halt, 6 reboot
reboot Reboot system
halt Halt system
poweroff Halt and power off system
utmp show Raw dump of UTMP/WTMP db
suspend Suspend system
Bug report address: https://github.com/troglobit/finit/issues
Project homepage: https://troglobit.com/finit.html
```
For services *not* supporting `SIGHUP` the `<!>` notation in the .conf
@@ -390,22 +469,73 @@ file must be used to tell Finit to stop and start it on `reload` and
`runlevel` changes. If `<>` holds more [conditions](doc/conditions.md),
these will also affect how a service is maintained.
**Note:** even though it is possible to start services not belonging in
the current runlevel these services will not be respawned automatically
by Finit if they exit (crash). Hence, if the runlevel is 2, the below
Dropbear SSH service will not be restarted if it is killed or exits.
> **Note:** even though it is possible to start services not belonging in
> the current runlevel these services will not be respawned automatically
> by Finit if they exit (crash). Hence, if the runlevel is 2, the below
> Dropbear SSH service will not be restarted if it is killed or exits.
```shell
~ $ initctl status -v
1 running 476 [S12345] /sbin/watchdog -T 16 -t 2 -F /dev/watchdog
2 running 477 [S12345] /sbin/syslogd -n -b 3 -D
3 running 478 [S12345] /sbin/klogd -n
4:1 inetd 0 [2345] internal time allow *:37,!eth0
4:2 inetd 0 [2345] internal time allow eth0:3737
5:1 inetd 0 [2345] /sbin/telnetd allow *:23 deny eth0,eth1
5:2 inetd 0 [2345] /sbin/telnetd allow eth0:2323,eth2:2323,eth1:2323
6:1 inetd 0 [345] /sbin/dropbear allow eth0:222
6:2 inetd 0 [345] /sbin/dropbear allow *:22 deny eth0
The `status` command is the default, it displays a quick overview of all
monitored run/task/services. Here we call `initctl -p`, suitable for
scripting and documentation:
```
alpine:~# initctl -p
PID IDENT STATUS RUNLEVELS DESCRIPTION
======================================================================
1506 acpid running [--2345----] ACPI daemon
1509 crond running [--2345----] Cron daemon
1489 dropbear running [--2345----] Dropbear SSH daemon
1511 klogd running [S12345----] Kernel log daemon
1512 ntpd running [--2345----] NTP daemon
1473 syslogd running [S12345----] Syslog daemon
alpine:~# initctl -pv
PID IDENT STATUS RUNLEVELS COMMAND
======================================================================
1506 acpid running [--2345----] acpid -f
1509 crond running [--2345----] crond -f -S $CRON_OPTS
1489 dropbear running [--2345----] dropbear -R -F $DROPBEAR_OPTS
1511 klogd running [S12345----] klogd -n $KLOGD_OPTS
1512 ntpd running [--2345----] ntpd -n $NTPD_OPTS
1473 syslogd running [S12345----] syslogd -n
```
The environment variables to each of the services above are read from,
in the case of Alpine Linux, `/etc/conf.d/`. Other distributions may
have other directories, e.g., Debian use `/etc/default/`.
The `status` command takes an optional `NAME:ID` argument. Here we
check the status of `dropbear`, which only has one instance in this
system:
```
alpine:~# initctl -p status dropbear
Status : running
Identity : dropbear
Description : Dropbear SSH daemon
Origin : /etc/finit.d/enabled/dropbear.conf
Environment : -/etc/conf.d/dropbear
Condition(s):
Command : dropbear -R -F $DROPBEAR_OPTS
PID file : !/run/dropbear.pid
PID : 1485
User : root
Group : root
Uptime : 2 hour 46 min 56 sec
Runlevels : [--2345----]
Memory : 1.2M
CGroup : /system/dropbear cpu 0 [100, max] mem [--.--, max]
|- 1485 dropbear -R -F
|- 2634 dropbear -R -F
|- 2635 ash
`- 2652 initctl -p status dropbear
Apr 8 12:19:49 alpine authpriv.info dropbear[1485]: Not backgrounding
Apr 8 12:37:45 alpine authpriv.info dropbear[2300]: Child connection from 192.168.121.1:47834
Apr 8 12:37:46 alpine authpriv.notice dropbear[2300]: Password auth succeeded for 'root' from 192.168.121.1:47834
Apr 8 12:37:46 alpine authpriv.info dropbear[2300]: Exit (root) from <192.168.121.1:47834>: Disconnect received
Apr 8 15:02:11 alpine authpriv.info dropbear[2634]: Child connection from 192.168.121.1:48576
Apr 8 15:02:12 alpine authpriv.notice dropbear[2634]: Password auth succeeded for 'root' from 192.168.121.1:48576
```
@@ -473,6 +603,6 @@ and proposed extensions.
[License]: https://en.wikipedia.org/wiki/MIT_License
[License Badge]: https://img.shields.io/badge/License-MIT-teal.svg
[Travis]: https://travis-ci.org/troglobit/finit
[Travis Status]: https://travis-ci.org/troglobit/finit.png?branch=master
[Travis Status]: https://travis-ci.org/troglobit/finit.svg?branch=master
[Coverity Scan]: https://scan.coverity.com/projects/3545
[Coverity Status]: https://scan.coverity.com/projects/3545/badge.svg
+20 -22
View File
@@ -1,4 +1,4 @@
AC_INIT(Finit, 4.0-rc1, https://github.com/troglobit/finit/issues, finit, https://troglobit.com/finit.html)
AC_INIT(Finit, 4.0-rc4, https://github.com/troglobit/finit/issues, finit, https://troglobit.com/finit.html)
AC_CONFIG_AUX_DIR(aux)
AM_INIT_AUTOMAKE([1.11 foreign dist-xz subdir-objects])
AM_SILENT_RULES([yes])
@@ -32,7 +32,7 @@ AC_PROG_MKDIR_P
# Configuration.
AC_HEADER_STDC
AC_CHECK_HEADERS([fstaby.h termios.h])
AC_CHECK_HEADERS([fstaby.h termios.h sys/ioctl.h])
AC_CHECK_FUNCS([strstr getopt getfsenty])
# Check for uint[8,16,32]_t
@@ -53,21 +53,13 @@ AC_ARG_ENABLE(emergency_shell,
Use only for debugging very early boot problems with Finit]),,[
enable_emergency_shell=no])
AC_ARG_ENABLE(fallback_shell,
AS_HELP_STRING([--enable-fallback-shell], [Start a shell if no TTYs can start]),,[
enable_fallback_shell=no])
AC_ARG_ENABLE(auto_reload,
AS_HELP_STRING([--enable-auto-reload], [Automatic reload on any .conf change]),,[
enable_auto_reload=no])
AC_ARG_ENABLE(watchdog,
AS_HELP_STRING([--enable-watchdog], [Enable built-in watchdog, uses /dev/watchdog]),,[
enable_watchdog=no])
AC_ARG_ENABLE(redirect,
AS_HELP_STRING([--enable-redirect], [Redirect service output to /dev/null, default: no]),,[
enable_redirect_output=no])
AS_HELP_STRING([--disable-redirect], [Disable redirection of service output to /dev/null]),,[
enable_redirect=yes])
AC_ARG_ENABLE(logit,
AS_HELP_STRING([--disable-logit], [Disable logit, used for log redirection, default: enable]),,[
@@ -128,21 +120,19 @@ AC_ARG_WITH(random-seed,
AS_HELP_STRING([--with-random-seed=FILE], [Save a random seed for /dev/urandom across reboots, default /var/lib/misc/random-seed]),
[random_seed=$withval], [random_seed=yes])
AC_ARG_WITH(watchdog,
AS_HELP_STRING([--with-watchdog=[DEV]], [Enable built-in watchdog, default: /dev/watchdog]),
[watchdog=$withval],[watchdog=])
### Enable features ###########################################################################
# Create config.h from selected features and fallback defautls
# Create config.h from selected features and fallback defaults
AS_IF([test "x$enable_emergency_shell" = "xyes"], [
AC_DEFINE(EMERGENCY_SHELL, 1, [Fork off init and let PID 1 wait and start /bin/sh if init crashes.])])
AS_IF([test "x$enable_fallback_shell" = "xyes"], [
AC_DEFINE(FALLBACK_SHELL, 1, [Start /bin/sh on console if no TTYs.])])
AS_IF([test "x$enable_auto_reload" = "xyes"], [
AC_DEFINE(AUTO_RELOAD, 1, [Finit automatically does `initctl reload` on any .conf change])])
AS_IF([test "x$enable_watchdog" = "xyes"], [
AC_DEFINE(BUILTIN_WATCHDOG, 1, [Enable built-in watchdog, kicks on /dev/watchdog])])
AS_IF([test "x$enable_redirect" = "xyes"], [
AC_DEFINE(REDIRECT_OUTPUT, 1, [Enable redirection of service output to /dev/null])])
@@ -153,6 +143,8 @@ AS_IF([test "x$enable_logit" != "xno"], [
AS_IF([test "x$enable_logrotate" != "xno"], [
AC_DEFINE(LOGROTATE_ENABLED, 1, [Enable built-in rotation of /var/log/wtmp et al.])])
AM_CONDITIONAL(LOGROTATE, [test "x$enable_logrotate" = "xyes"])
### With features ##############################################################################
AS_IF([test "x$with_config" != "xno"], [
AS_IF([test "x$conf" = "xyes"], [
@@ -202,9 +194,15 @@ AS_IF([test "x$with_random_seed" != "xno"], [
AC_EXPAND_DIR(random_path, "$random_seed")
AC_DEFINE_UNQUOTED(RANDOMSEED, "$random_path", [Improve random at boot by seeding it with sth from before.])])
AS_IF([test "x$with_watchdog" != "xno"], [
AS_IF([test "x$watchdog" = "xyes"], [
watchdog=/dev/watchdog])
with_watchdog=yes
AC_DEFINE_UNQUOTED(WDT_DEVNODE, "$watchdog", [Built-in watchdog device node])])
# Control build with automake flags
AM_CONDITIONAL(STATIC, [test "x$enable_static" = "xyes"])
AM_CONDITIONAL(WATCHDOGD, [test "x$enable_watchdog" = "xyes"])
AM_CONDITIONAL(WATCHDOGD, [test "x$with_watchdog" != "xno"])
AM_CONDITIONAL(LOGIT, [test "x$enable_logit" = "xyes"])
AM_CONDITIONAL(DOC, [test "x$enable_doc" = "xyes"])
AM_CONDITIONAL(CONTRIB, [test "x$enable_contrib" = "xyes"])
@@ -251,11 +249,11 @@ Behavior:
Optional features:
Install doc/..........: $enable_doc
Install contrib/......: $enable_contrib
Built-in watchdogd....: $enable_watchdog
Built-in watchdogd....: $with_watchdog $watchdog
Built-in logrotate....: $enable_logrotate
Scripting tool logit..: $enable_logit
Emergency shell.......: $enable_emergency_shell
Fallback shell........: $enable_fallback_shell
Redirect output.......: $enable_redirect
Default hostname......: $hostname
Default runlevel......: $runlevel
+1 -1
View File
@@ -17,7 +17,7 @@ PKG_CONFIG_LIBDIR=/usr/lib/pkgconfig:/usr/local/lib/pkgconfig ./configure \
--prefix=/usr --exec-prefix= \
--sysconfdir=/etc --localstatedir=/var \
--enable-dbus-plugin --enable-x11-common-plugin \
--enable-alsa-utils-plugin --enable-watchdog \
--enable-alsa-utils-plugin --with-watchdog \
--with-heading="Alpine Linux 3.13"
echo
+1 -2
View File
@@ -1,5 +1,4 @@
docsdir := @docdir@/contrib/alpine/finit.d/available
docs_DATA = acpid.conf crond.conf dropbear.conf getty.conf keymap.conf \
lxdm.conf modules.conf ntpd.conf klogd.conf syslog.conf \
watchdog.conf
lxdm.conf modules.conf ntpd.conf syslog.conf watchdog.conf
EXTRA_DIST = $(docs_DATA)
+4 -3
View File
@@ -1,4 +1,5 @@
# Consoles to start getty on when system is up
tty [12345] /dev/tty1 noclear nowait
tty [2345] /dev/tty2 noclear nowait
tty [2345] /dev/tty3 noclear nowait
tty [12345] /dev/ttyS0 noclear
tty [12345] /dev/tty1 noclear nowait
tty [2345] /dev/tty2 noclear nowait
tty [2345] /dev/tty3 noclear nowait
@@ -1,2 +0,0 @@
# Start klogd as soon as possible, after syslogd, should always run
service [S12345] <pid/syslogd> env:-/etc/conf.d/klogd klogd -n $KLOGD_OPTS -- Kernel log daemon
@@ -4,3 +4,4 @@
#module evdev
#module mousedev
#module 8139cp
module softdog
+3 -1
View File
@@ -1,2 +1,4 @@
# Start syslogd as soon as possible, should always run
service [S12345] env:-/etc/conf.d/syslog syslogd -n $SYSLOGD_OPTS -- Syslog daemon
# Start klogd as soon as possible, but after syslogd
service [S12345] env:-/etc/conf.d/syslog syslogd -n $SYSLOGD_OPTS -- Syslog daemon
service [S12345] <pid/syslogd> env:-/etc/conf.d/klogd klogd -n $KLOGD_OPTS -- Kernel log daemon
+29 -2
View File
@@ -8,6 +8,18 @@ module evdev
module loop
module psmouse
# Top-level cgroups and their default settings. All groups mandatory
# but more can be added, max 8 groups in total currently. The cgroup
# 'root' is also available, reserved for RT processes. Settings are
# as-is, only one shorthand 'mem.' exists, other than that it's the
# cgroup v2 controller default names.
cgroup init cpu.weight:100
cgroup user cpu.weight:100
cgroup system cpu.weight:9700 cpu.max:50000
# Example extra cgroup
cgroup maint cpu.weight:100
# Runlevel to start after bootstrap, runlevel 'S'
runlevel 2
@@ -16,7 +28,7 @@ network service networking start
# Max file size for each log file: 100 kiB, rotate max 4 copies:
# log => log.1 => log.2.gz => log.3.gz => log.4.gz
log size=100k count=4
log size:100k count:4
# Virtual consoles to start getty on
tty /dev/tty1
@@ -30,9 +42,24 @@ tty /dev/tty3
#run [2] /etc/init.d/networking start -- Start networking
# Services to be monitored and respawned as needed
# klgod and syslogd are placed in the maint cgroup
cgroup.maint
service [2345] <pid/syslogd> klogd -n -- Kernel logging server
service [2345] syslogd -n -- Syslog server
service [3] gdm -- GNOME Display Manager
# gdm in the system cgroup (default when read from it's own .conf file)
cgroup.system
service [3] cgroup:cpu.weight:250,mem.max:10M gdm -- GNOME Display Manager
# Start SSH daemon with opts from /etc/default/ssh (if available), move
# to user cgroup with cpu.weight:250. Default for services is system
# group. Default weight in user group is 100 (above). Max length of
# cgroup argument is (currently) 63 chars.
#
# Notice alternative syntax where current cgroup is only set for this
# particular service.
service [2345] cgroup.user:cpu.weight:250,mem.max:10M env:-/etc/default/ssh /usr/sbin/sshd -D $SSHD_OPTS -- OpenSSH daemon
# The BusyBox ntpd does not use syslog when running in the foreground
# So we use this trick to redirect stdout/stderr to a log file. The
+1 -1
View File
@@ -17,7 +17,7 @@ PKG_CONFIG_LIBDIR=/usr/lib/pkgconfig:/usr/local/lib/pkgconfig ./configure \
--prefix=/usr --exec-prefix= \
--sysconfdir=/etc --localstatedir=/var \
--enable-dbus-plugin --enable-x11-common-plugin \
--enable-alsa-utils-plugin --enable-watchdog \
--enable-alsa-utils-plugin --with-watchdog \
--with-heading="Void Linux"
echo
+2 -2
View File
@@ -1,5 +1,5 @@
docsdir := @docdir@/contrib/void/finit.d/available
docs_DATA = acpid.conf crond.conf dhcpcd.conf dmeventd.conf getty.conf \
keymap.conf klogd.conf lxdm.conf modules.conf ntpd.conf \
sshd.conf syslogd.conf uuidd.conf
keymap.conf lxdm.conf modules.conf ntpd.conf \
sshd.conf syslog.conf uuidd.conf
EXTRA_DIST = $(docs_DATA)
@@ -1,2 +0,0 @@
# Start klogd as soon as possible, should always run
service [S12345] <pid/syslogd> klogd -n -- Kernel log daemon
@@ -4,3 +4,4 @@
#module evdev
#module mousedev
#module 8139cp
module softdog
@@ -0,0 +1,4 @@
# Start syslogd as soon as possible, should always run
# Start klogd as soon as possible, but after syslogd
service [S12345] syslogd -n -- Syslog daemon
service [S12345] <pid/syslogd> klogd -n -- Kernel log daemon
@@ -1,2 +0,0 @@
# Start syslogd as soon as possible, should always run
service [S12345] syslogd -n -- Syslog daemon
+4 -4
View File
@@ -19,9 +19,6 @@ Some of these are also registered in the issue tracker on GitHub.
* Add new (complimentary) .svc file format to slowly migrate away
from the very terse one-liner format currently used
* Allow running as non-pid1 => read .conf and RCSD form cmdline
* When a process dies, and Finit does not restart it, we should collect
a `siginfo_t` from the SIGCHLD signal and supply to the user in case
`initctl status <process>` is called to debug the issue.
* Add `finit.conf` support for UPS notification (SIGPWR) to start a task
using, e.g. <sys/power/{ok,fail,low}> conditions. More info in sig.c
* Add `finit.conf` support for ctrl-alt-delete (SIGINT) and kbrequest,
@@ -29,7 +26,10 @@ Some of these are also registered in the issue tracker on GitHub.
e.g, <sys/key/ctrlaltdel> and <sys/key/signal> like SIGPWR handling.
* Write man pages for finit and `finit.conf`, steal from the excellent
`pimd` man pages ...
* Add support for timed shutdown in Finit, including cancelled shutdown
* Add support for timed shutdown in Finit, including cancelled shutdown:
shutdown -h 03:35 "foobar was here"
* Add support for JSON output, or similar, from `initctl show`, e.g.
`initctl show --json`
+1 -1
View File
@@ -34,7 +34,7 @@ Bootstrap
24. Call 4th level hooks, `HOOK_SVC_UP`
25. Call `/etc/rc.local`, if it exists and is an executable shell script
26. Call 5th level (last) hooks, `HOOK_SYSTEM_UP`
27. Start all configured TTYs, or a fallback shell on `/dev/console`
27. Start all configured TTYs
In (19) and (22) tasks and services defined in `/etc/finit.conf` and
`/etc/sysctl.d/*.conf` are started. Remember, all `service` and `task`
+10 -7
View File
@@ -153,19 +153,22 @@ kernel messages and add `debug` to enable Finit debug messages.
append="init=/sbin/finit debug"
```
To debug startup issues, in particular issues with getty/login, try
`configure --enable-fallback-shell`. When no TTYs are detected, and
Finit is configured with this option, Finit will try to start a bare
`/bin/sh` on the boot console. Remember, this is only for debugging
and would leave your production system potentially wide open.
To debug startup issues, in particular issues with getty/login, add
the following to your Finit .conf file:
tty [12345789] notty noclear
The `notty` option ensures reusing the stdin/stdout set up by the
kernel. Remember, this is only for debugging and would leave your
production system potentially wide open.
There is also a rescue shell available, in case Finit crashes and the
kernel usually reboots: `configure --enable-emergency-shell`. However,
the behavior of Finit is severely limited when this is enabled, so use
it only for debugging start up issues when Finit crashes.
**NOTE:** Neither of these two configure options should be enabled on
production systems since they can potentially give a user root access.
**NOTE:** Neither of these options should be enabled on production
systems since they can potentially give a user root access.
[1]: ftp://troglobit.com/finit/finit-3.0.tar.xz
+27 -1
View File
@@ -45,7 +45,31 @@ being created.
Triggering
----------
Conditions can only be triggered by built-in plugins.
Conditions are mainly triggered (asserted) by built-in plugins, e.g.,
`netlink.so` and `pidfile.so`, see below for built-in conditions. Finit
also supports user-defined conditions, sometimes referred to as static
or one-shot conditions. They live in the `<usr/...` namespace and are
constrained to a flat hierarchy without any sub-directories, unlike the
pidfile plugin, for instance.
User-defined conditions are controlled using the `initctl cond set` and
`initctl cond clear` commands:
initctl cond set foo
initctl cond clear foo
The purpose of user-defined conditions is to be able to start or stop
services, or run/task jobs, on external site-dependent stimuli.
Example:
service [2345] <usr/foo> alarm --arg foo -- Foo alarm
For convenience, prefixing with `usr/` is allowed, but any other slashes
or period characters are disallowed. E.g., to trigger the `Foo alarm`,
the same as above, can also be achieved like this:
initctl cond set usr/foo
initctl cond clear usr/foo
Conditions retain their current state until the next reconfiguration or
runlevel change. At that point all set conditions transition into the
@@ -57,6 +81,8 @@ unchanged) state of it.
> **Note:** For `pid/` conditions it is expected that services "touch"
> or recreate their PID file on `SIGHUP`.
Static (one-shot) conditions, like `usr/`, never enter the `flux` state.
Built-in Conditions
-------------------
+104 -10
View File
@@ -2,7 +2,9 @@ Configuration
=============
* [Introduction](#introduction)
* [Service Environment](#service-environment)
* [Service Wrapper Scripts](#service-wrapper-scripts)
* [Cgroups](#cgroups)
* [Configuration File Syntax](#configuration-file-syntax)
* [Hostname](#hostname)
* [Kernel Modules](#kernel-modules)
@@ -128,6 +130,67 @@ example employs a wrapper script in `/etc/start.d`.
> instead of sending SIGHUP at restart/reload events.
Cgroups
-------
There are three major cgroup configuration directives:
1. Global top-level group: init, system, user, or a custom group
2. Selecting a top-level group for a set of run/task/services
3. Per run/task/service limits
Top-level group configuration.
# Top-level cgroups and their default settings. All groups mandatory
# but more can be added, max 8 groups in total currently. The cgroup
# 'root' is also available, reserved for RT processes. Settings are
# as-is, only one shorthand 'mem.' exists, other than that it's the
# cgroup v2 controller default names.
cgroup init cpu.weight:100
cgroup user cpu.weight:100
cgroup system cpu.weight:9800
Adding an extra cgroup `maint/` will require you to adjust the weight of
the above three. We leave `init/` and `user /` as-is reducing weight of
`system/` to 9700.
cgroup system cpu.weight:9700
# Example extra cgroup 'maint'
cgroup maint cpu.weight:100
By default, the `system/` cgroup is selected for almost everything. The
`init/` cgroup is reserved for PID 1 itself and its closest relatives.
The `user/` cgroup is for local TTY logins spawned by getty.
To select a different top-level cgroup, e.g. `maint/`, one can either
define it for a group of run/task/service directives in a `.conf` or per
each stanza:
cgroup.maint
service [...] <...> /path/to/foo args -- description
service [...] <...> /path/to/bar args -- description
or
service [...] <...> cgroup.maint /path/to/foo args -- description
The latter form also allows per-stanza limits on the form:
service [...] <...> cgroup.maint:cpu.max:10000,mem.max:655360 /path/to/foo args -- description
Notice the comma separation and the `mem.` exception to the rule: every
cgroup setting maps directly to cgroup v2 syntax. I.e., `cpu.max` maps
to the file `/sys/fs/cgroup/maint/foo/cpu.max`. There is not filtering,
except for expanding the shorthand `mem.` to `memory.`, if the file is
not available, either the cgroup controller is not available in your
Linux kernel, or the name is misspelled.
> Linux cgroups and details surrounding values are not explained in the
> Finit documentation. The Linux admin-guide cover this well:
> <https://www.kernel.org/doc/html/latest/admin-guide/cgroup-v2.html>
Configuration File Syntax
-------------------------
@@ -333,6 +396,28 @@ process using a different signal, use the option `halt:SIGNAL`, e.g.,
use the option `kill:SEC`, e.g., `kill:10` to wait 10 seconds before
sending `SIGKILL`.
Services support `pre:script` and `post:script` actions as well. These
run as the same `@USER:GROUP` as the service itself, with any `env:file`
sourced. The scripts must use an absolute path, but are executed from
the `$HOME` of the given user. The scripts are not called with any
argument (currently), but both get the `SERVICE_IDENT=foo` environment
variable set. Here `foo` denotes the identity of the service, which if
there are multiple services named `foo`, may be `foo:1`, or any unique
identifier specified in the .conf file. The `post:script` is called
with an additional set of environment variables:
- `EXIT_CODE=[exited,signal]`: set to one of `exited` or `signal`
- `EXIT_STATUS=[num,SIGNAME]`: set to one of exit status code from
the program, if it exited normally, or the signal name (`HUP`,
`TERM`, etc.) if it exited due to signal
The scripts have a default execution time of 3 seconds before they are
SIGKILLed, this can be adjusted using the above `kill:SEC` syntax.
> **Note:** the `pre:script` _must_ be idempotent, because a service
> can transition between READY and HALTED states any number
> of times before going to RUNNING.
### Run-parts Scripts
@@ -353,6 +438,7 @@ you will block Finit.
> **Note:** only read and executed in runlevel S (bootstrap).
### Including Finit Configs
**Syntax:** `include <CONF>`
@@ -377,8 +463,8 @@ size limit is reached.
### TTYs and Consoles
**Syntax:** `tty [LVLS] <DEV> [BAUD] [noclear] [nowait] [nologin] [TERM]`
`tty [LVLS] <CMD> <ARGS> [noclear] [nowait]`
**Syntax:** `tty [LVLS] <COND> DEV [BAUD] [noclear] [nowait] [nologin] [TERM]`
`tty [LVLS] <COND> CMD <ARGS> [noclear] [nowait]`
The first variant of this option uses the built-in getty on the given
TTY device DEV, in the given runlevels. The DEV may be the special
@@ -386,6 +472,11 @@ keyword `@console`, or `console`, useful on embedded systems.
The default baud rate is 0, i.e., keep kernel default.
> The `tty` stanza inherits runlevel, condition (and other feature)
> parsing from the `service` stanza. So TTYs can run in one or many
> runlevels and depend on any condition supported by Finit. This is
> useful e.g. to depend on `<pid/elogind>` before starting a TTY.
**Example:**
tty [12345] /dev/ttyAMA0 115200 noclear vt220
@@ -423,16 +514,22 @@ uses `ttyS0`, `ttyAMA0`, `ttyMXC0`, or anything else. Finit figures
it out by querying sysfs: `/sys/class/tty/console/active`. The speed
can be omitted to keep the kernel default.
> Most systems get by fine by just using `console`, which will evaluate
> to `/dev/console`. If you have to use `@console` to get any output,
> you may have some issue with your kernel config.
**Example:**
tty [12345] @console noclear vt220
On really bare bones systems Finit offers a fallback shell, which
should not be enabled on production systems since. This because it
may give a user root access without having to log in. However, for
bringup and system debugging it can come in handy:
On really bare bones systems Finit can give you a shell prompt as
soon as bootstrap is done, without opening any device node:
configure --enable-fallback-shell
tty [12345789] notty noclear
This should of course not be enabled on production systems. Because it
may give a user root access without having to log in. However, for
board bringup and system debugging it can come in handy.
One can also use the `service` stanza to start a stand-alone shell:
@@ -483,9 +580,6 @@ Log rotation is controlled using the global `log` setting.
service log:prio:user.warn,tag:ntpd /sbin/ntpd pool.ntp.org -- NTP daemon
Worth noting is that conditions is allowed for all these stanzas. For a
detailed description, see the [Conditions](conditions.md) document.
Limitations
-----------
+1 -1
View File
@@ -18,7 +18,7 @@ The current state depends on the two following conditions:
A service may be stopped, or blocked, for several reasons:
- The user has manually stopped the service using `initctl stop JOB`
- The user has manually stopped the service using `initctl stop NAME`
- The program exits immediately. I.e. keeps crashing (make sure to use
the 'run this service in the foreground' command line option)
- The binary is missing in the filesystem
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+2 -2
View File
@@ -7,7 +7,7 @@ AM_CPPFLAGS += $(lite_CFLAGS)
if STATIC
noinst_LTLIBRARIES = libplug.la
libplug_la_SOURCES = bootmisc.c modprobe.c rtc.c pidfile.c procps.c tty.c urandom.c
libplug_la_SOURCES = bootmisc.c modprobe.c rtc.c pidfile.c procps.c tty.c urandom.c usr.c
if BUILD_ALSA_UTILS_PLUGIN
libplug_la_SOURCES += alsa-utils.c
@@ -34,7 +34,7 @@ libplug_la_SOURCES += resolvconf.c
endif
else
pkglib_LTLIBRARIES = bootmisc.la modprobe.la rtc.la pidfile.la procps.la tty.la urandom.la
pkglib_LTLIBRARIES = bootmisc.la modprobe.la rtc.la pidfile.la procps.la tty.la urandom.la usr.la
if BUILD_ALSA_UTILS_PLUGIN
pkglib_LTLIBRARIES += alsa-utils.la
+31 -39
View File
@@ -65,7 +65,7 @@ static int is_tmpfs(char *path)
return tmpfs;
}
static int do_clean(const char *fpath, const struct stat *sb, int tflag, struct FTW *ftw)
static int bootclean(const char *fpath, const struct stat *sb, int tflag, struct FTW *ftw)
{
if (ftw->level == 0)
return 1;
@@ -76,8 +76,14 @@ static int do_clean(const char *fpath, const struct stat *sb, int tflag, struct
return 0;
}
/* We can safely skip tmpfs, nothing to clean from previous boot there */
static void bootclean(void)
/*
* Cleanup stale files from previous boot, if any still linger on.
* Some systems, e.g. Alpine Linux, still have a persistent /run and
* /tmp, i.e. not tmpfs.
*
* We can safely skip tmpfs, nothing to clean there.
*/
static void clean(void *arg)
{
char *dir[] = {
"/tmp/",
@@ -90,7 +96,7 @@ static void bootclean(void)
if (is_tmpfs(dir[i]))
continue;
nftw(dir[i], do_clean, 20, FTW_DEPTH);
nftw(dir[i], bootclean, 20, FTW_DEPTH);
}
}
@@ -99,13 +105,11 @@ static void bootclean(void)
*/
static void setup(void *arg)
{
int uid, gid;
mode_t prev;
/* Cleanup stale files, if any still linger on. */
bootclean();
prev = umask(0);
_d("Setting up FHS structure in /var ...");
umask(0);
makedir("/var/cache", 0755);
makedir("/var/db", 0755); /* _PATH_VARDB on some systems */
makedir("/var/games", 0755);
@@ -133,19 +137,21 @@ static void setup(void *arg)
makedir("/var/tmp", 0755);
makedir("/var/empty", 0755);
/*
* If /etc/group or "utmp" group is missing,
* default to "root"/"wheel" group
*/
_d("Setting up necessary UTMP files ...");
gid = getgroup("utmp");
if (gid < 0)
gid = 0;
/*
* UTMP actually needs multiple db files
*/
if (has_utmp()) {
int gid;
/*
* If /etc/group or "utmp" group is missing, default to
* "root", or "wheel", group.
*/
_d("Setting up necessary UTMP files ...");
gid = getgroup("utmp");
if (gid < 0)
gid = 0;
create("/var/run/utmp", 0644, 0, gid); /* Currently logged in */
create("/var/log/wtmp", 0644, 0, gid); /* Login history */
create("/var/log/btmp", 0600, 0, gid); /* Failed logins */
@@ -165,39 +171,25 @@ static void setup(void *arg)
makedir("/var/run/network",0755); /* Needed by Debian/Ubuntu ifupdown */
makedir("/var/run/lldpd", 0755); /* Needed by lldpd */
makedir("/var/run/pluto", 0755); /* Needed by Openswan */
makedir("/var/run/quagga", 0755); /* Needed by Quagga */
makedir("/var/log/quagga", 0755); /* Needed by Quagga */
makedir("/var/run/frr", 0755); /* Needed by FRR */
makedir("/var/log/frr", 0755); /* Needed by FRR */
mksubsys("/var/run/quagga", 0755, "quagga", "quagga");
mksubsys("/var/log/quagga", 0755, "quagga", "quagga");
mksubsys("/var/run/frr", 0755, "frr", "frr");
mksubsys("/var/log/frr", 0755, "frr", "frr");
makedir("/var/run/sshd", 01755); /* OpenSSH */
gid = getgroup("tty");
if (gid < 0)
gid = 0;
makefifo("/dev/xconsole", 0640); /* sysklogd */
chown("/dev/xconsole", 0, gid);
if (!fexist("/etc/mtab"))
symlink("../proc/self/mounts", "/etc/mtab");
/* Void Linux has a uuidd that runs as uuid:uuid and needs /run/uuid */
uid = getuser("uuidd", NULL);
if (uid >= 0) {
gid = getgroup("uuidd");
if (gid < 0)
gid = 0;
makedir("/var/run/uuidd", 0755);
chown("/var/run/uuidd", uid, gid);
}
mksubsys("/var/run/uuidd", 0755, "uuidd", "uuidd");
umask(022);
umask(prev);
}
static plugin_t plugin = {
.name = __FILE__,
.hook[HOOK_BASEFS_UP] = {
.cb = setup
},
.hook[HOOK_MOUNT_POST] = { .cb = clean },
.hook[HOOK_BASEFS_UP] = { .cb = setup },
.depends = { "pidfile" },
};
+13 -11
View File
@@ -32,13 +32,16 @@
#include "conf.h"
#define DAEMON "dbus-daemon"
#define ARGS "--nofork --system"
#define ARGS "--nofork --system --syslog-only"
#define DESC "D-Bus message bus daemon"
#define DAEMONUSER "messagebus"
static void setup(void *arg)
{
char *cmd;
char line[256];
mode_t prev;
char *cmd;
cmd = which(DAEMON);
if (!cmd) {
@@ -46,29 +49,28 @@ static void setup(void *arg)
return;
}
umask(0);
prev =umask(0);
makedir("/var/run/dbus", 0755);
makedir("/var/lock/subsys", 0755);
makedir("/var/lock/subsys/messagebus", 0755);
mksubsys("/var/run/dbus", 0755, DAEMONUSER, DAEMONUSER);
if (whichp("dbus-uuidgen"))
run("dbus-uuidgen --ensure");
run_interactive("dbus-uuidgen --ensure", "Creating machine UUID for D-Bus");
/* Clean up from any previous pre-bootstrap run */
erase("/var/run/dbus/pid");
remove("/var/run/dbus/pid");
/* Register service with Finit */
snprintf(line, sizeof(line), "[S12345] pid:!/run/dbus/pid log:prio:daemon.info,tag:dbus %s %s -- %s", cmd, ARGS, DESC);
snprintf(line, sizeof(line), "[S12345789] @%s:%s %s %s -- %s",
DAEMONUSER, DAEMONUSER, cmd, ARGS, DESC);
if (service_register(SVC_TYPE_SERVICE, line, global_rlimit, NULL))
_pe("Failed registering %s", DAEMON);
free(cmd);
umask(022);
umask(prev);
}
static plugin_t plugin = {
.name = __FILE__,
.hook[HOOK_NETWORK_UP] = {
.hook[HOOK_BASEFS_UP] = {
.cb = setup
},
.depends = { "bootmisc", },
+1
View File
@@ -90,6 +90,7 @@ static plugin_t plugin = {
.hook[HOOK_BASEFS_UP] = {
.cb = setup
},
.depends = { "bootmisc" },
};
PLUGIN_INIT(plugin_init)
+75 -40
View File
@@ -17,6 +17,7 @@
*/
#include <arpa/inet.h>
#include <ctype.h>
#include <errno.h>
#include <net/if.h> /* IFNAMSIZ */
#include <sys/socket.h>
@@ -48,7 +49,7 @@ static int nlmsg_validate(struct nlmsghdr *nh, size_t len)
return 0;
}
static void nl_route(struct nlmsghdr *nlmsg)
static void nl_route(struct nlmsghdr *nlmsg, ssize_t len)
{
struct rtmsg *r;
struct rtattr *a;
@@ -63,8 +64,14 @@ static void nl_route(struct nlmsghdr *nlmsg)
r = NLMSG_DATA(nlmsg);
a = RTM_RTA(r);
la = RTM_PAYLOAD(nlmsg);
if (la >= len) {
_e("Packet too large!");
return;
}
while (RTA_OK(a, la)) {
void *data = RTA_DATA(a);
switch (a->rta_type) {
case RTA_GATEWAY:
gw = *((int *)data);
@@ -105,7 +112,27 @@ static void net_cond_set(char *ifname, char *cond, int set)
cond_clear(msg);
}
static void nl_link(struct nlmsghdr *nlmsg)
static int validate_ifname(const char *ifname)
{
if (!ifname || !ifname[0])
return 1;
if (strlen(ifname) >= IFNAMSIZ)
return 1;
if (strstr(ifname, ".."))
return 1;
while (*ifname) {
if (*ifname == '/' || isspace(*ifname))
return 1;
ifname++;
}
return 0;
}
static void nl_link(struct nlmsghdr *nlmsg, ssize_t len)
{
int la;
char ifname[IFNAMSIZ + 1];
@@ -120,53 +147,61 @@ static void nl_link(struct nlmsghdr *nlmsg)
i = NLMSG_DATA(nlmsg);
a = (struct rtattr *)((char *)i + NLMSG_ALIGN(sizeof(struct ifinfomsg)));
la = NLMSG_PAYLOAD(nlmsg, sizeof(struct ifinfomsg));
if (la >= len) {
_e("Packet too large!");
return;
}
while (RTA_OK(a, la)) {
if (a->rta_type == IFLA_IFNAME) {
strlcpy(ifname, RTA_DATA(a), sizeof(ifname));
switch (nlmsg->nlmsg_type) {
case RTM_NEWLINK:
/*
* New interface has appeared, or interface flags has changed.
* Check ifi_flags here to see if the interface is UP/DOWN
*/
_d("%s: New link, flags 0x%x, change 0x%x", ifname, i->ifi_flags, i->ifi_change);
net_cond_set(ifname, "exist", 1);
net_cond_set(ifname, "up", i->ifi_flags & IFF_UP);
net_cond_set(ifname, "running", i->ifi_flags & IFF_RUNNING);
break;
for (; RTA_OK(a, la); a = RTA_NEXT(a, la)) {
if (a->rta_type != IFLA_IFNAME)
continue;
case RTM_DELLINK:
/* NOTE: Interface has disappeared, not link down ... */
_d("%s: Delete link", ifname);
net_cond_set(ifname, "exist", 0);
net_cond_set(ifname, "up", 0);
net_cond_set(ifname, "running", 0);
break;
case RTM_NEWADDR:
_d("%s: New Address", ifname);
break;
case RTM_DELADDR:
_d("%s: Deconfig Address", ifname);
break;
default:
_d("%s: Msg 0x%x", ifname, nlmsg->nlmsg_type);
break;
}
strlcpy(ifname, RTA_DATA(a), sizeof(ifname));
if (validate_ifname(ifname)) {
_d("Invalid interface name '%s', skipping ...", ifname);
continue;
}
a = RTA_NEXT(a, la);
switch (nlmsg->nlmsg_type) {
case RTM_NEWLINK:
/*
* New interface has appeared, or interface flags has changed.
* Check ifi_flags here to see if the interface is UP/DOWN
*/
_d("%s: New link, flags 0x%x, change 0x%x", ifname, i->ifi_flags, i->ifi_change);
net_cond_set(ifname, "exist", 1);
net_cond_set(ifname, "up", i->ifi_flags & IFF_UP);
net_cond_set(ifname, "running", i->ifi_flags & IFF_RUNNING);
break;
case RTM_DELLINK:
/* NOTE: Interface has disappeared, not link down ... */
_d("%s: Delete link", ifname);
net_cond_set(ifname, "exist", 0);
net_cond_set(ifname, "up", 0);
net_cond_set(ifname, "running", 0);
break;
case RTM_NEWADDR:
_d("%s: New Address", ifname);
break;
case RTM_DELADDR:
_d("%s: Deconfig Address", ifname);
break;
default:
_d("%s: Msg 0x%x", ifname, nlmsg->nlmsg_type);
break;
}
}
}
static void nl_callback(void *arg, int sd, int events)
{
ssize_t len;
static char buf[4096];
struct nlmsghdr *nh;
ssize_t len;
memset(buf, 0, sizeof(buf));
len = recv(sd, buf, sizeof(buf), 0);
@@ -179,9 +214,9 @@ static void nl_callback(void *arg, int sd, int events)
for (nh = (struct nlmsghdr *)buf; !nlmsg_validate(nh, len); nh = NLMSG_NEXT(nh, len)) {
//_d("Well formed netlink message received. type %d ...", nh->nlmsg_type);
if (nh->nlmsg_type == RTM_NEWROUTE || nh->nlmsg_type == RTM_DELROUTE)
nl_route(nh);
nl_route(nh, len);
else
nl_link(nh);
nl_link(nh, len);
}
}
+36 -17
View File
@@ -58,7 +58,7 @@ static int pidfile_add_path(struct iwatch *iw, char *path)
}
}
return iwatch_add(iw, path, IN_ONLYDIR);
return iwatch_add(iw, path, IN_ONLYDIR | IN_CLOSE_WRITE);
}
static void pidfile_update_conds(char *dir, char *name, uint32_t mask)
@@ -68,11 +68,11 @@ static void pidfile_update_conds(char *dir, char *name, uint32_t mask)
svc_t *svc;
paste(fn, sizeof(fn), dir, name);
_d("path: %s, mask: %08x", fn, mask);
if (fnmatch("*\\.pid", fn, 0) && fnmatch("*/pid", fn, 0))
return;
_d("path: %s, mask: %08x", fn, mask);
svc = svc_find_by_pidfile(fn);
if (!svc) {
_d("No matching svc for %s", fn);
@@ -82,15 +82,25 @@ static void pidfile_update_conds(char *dir, char *name, uint32_t mask)
_d("Found svc %s for %s with pid %d", svc->name, fn, svc->pid);
mkcond(svc, cond, sizeof(cond));
if (mask & (IN_CREATE | IN_ATTRIB | IN_MODIFY | IN_MOVED_TO)) {
if (mask & (IN_CLOSE_WRITE | IN_ATTRIB | IN_MODIFY | IN_MOVED_TO)) {
svc_started(svc);
if (!svc_has_pidfile(svc))
pid_file_set(svc, fn, 1);
if (svc_is_forking(svc)) {
pid_t pid;
pid = pid_file_read(pid_file(svc));
_d("Forking service %s changed PID from %d to %d",
svc->cmd, svc->pid, pid);
svc->pid = pid;
if (pid == -1) {
cond_clear(cond);
return;
}
if (pid != svc->pid) {
_d("Forking service %s changed PID from %d to %d",
svc->cmd, svc->pid, pid);
svc->pid = pid;
}
}
cond_set(cond);
@@ -151,7 +161,8 @@ static void pidfile_callback(void *arg, int fd, int events)
{
static char ev_buf[8 *(sizeof(struct inotify_event) + NAME_MAX + 1) + 1];
struct inotify_event *ev;
ssize_t sz, off;
ssize_t sz;
size_t off;
sz = read(fd, ev_buf, sizeof(ev_buf) - 1);
if (sz <= 0) {
@@ -160,15 +171,19 @@ static void pidfile_callback(void *arg, int fd, int events)
}
ev_buf[sz] = 0;
for (off = 0; off < sz; off += sizeof(*ev) + ev->len) {
for (off = 0; off < (size_t)sz; off += sizeof(*ev) + ev->len) {
struct iwatch_path *iwp;
if (off + sizeof(*ev) > (size_t)sz)
break;
ev = (struct inotify_event *)&ev_buf[off];
if (off + sizeof(*ev) + ev->len > (size_t)sz)
break;
if (!ev->mask)
continue;
_d("name %s, event: 0x%08x", ev->name, ev->mask);
/* Find base path for this event */
iwp = iwatch_find_by_wd(&iw_pidfile, ev->wd);
if (!iwp)
@@ -179,12 +194,7 @@ static void pidfile_callback(void *arg, int fd, int events)
continue;
}
if (ev->mask & IN_DELETE) {
_d("pidfile %s/%s removed ...", iwp->path, ev->name);
continue;
}
if (ev->mask & (IN_CREATE | IN_ATTRIB | IN_MODIFY | IN_MOVED_TO))
if (ev->mask & (IN_CLOSE_WRITE | IN_DELETE | IN_ATTRIB | IN_MODIFY | IN_MOVED_TO))
pidfile_update_conds(iwp->path, ev->name, ev->mask);
}
}
@@ -226,8 +236,14 @@ static void pidfile_reconf(void *arg)
static void pidfile_init(void *arg)
{
char piddir[MAX_ARG_LEN];
char *path;
if (mkpath(pid_runpath(_PATH_CONDPID, piddir, sizeof(piddir)), 0755) && errno != EEXIST) {
_pe("Failed creating %s condition directory, %s", COND_PID, _PATH_CONDPID);
return;
}
/*
* The bootmisc plugin is responsible for setting up /var/run.
* and/or /run, with proper symlinks etc. We depend on bootmisc
@@ -235,6 +251,7 @@ static void pidfile_init(void *arg)
*/
path = realpath(_PATH_VARRUN, NULL);
if (!path) {
_d("Failed querying realpath(%s): %s", _PATH_VARRUN, strerror(errno));
path = realpath("/run", NULL);
if (!path) {
_e("System does not have %s or /run, aborting.", _PATH_VARRUN);
@@ -244,6 +261,8 @@ static void pidfile_init(void *arg)
if (pidfile_add_path(&iw_pidfile, path))
iwatch_exit(&iw_pidfile);
free(path);
}
/*
+46 -25
View File
@@ -32,13 +32,14 @@
#include "finit.h"
#include "helpers.h"
#include "plugin.h"
#include "service.h"
#include "tty.h"
static void watcher(void *arg, int fd, int events);
static void tty_watcher(void *arg, int fd, int events);
static plugin_t plugin = {
.io = {
.cb = watcher,
.cb = tty_watcher,
.flags = PLUGIN_IO_READ,
},
};
@@ -53,33 +54,53 @@ static void setup(void)
_pe("Failed starting TTY watcher");
}
static void watcher(void *arg, int fd, int events)
static void do_tty(char *tty, size_t len, int creat)
{
char buf[EVENT_SIZE];
int len = 0;
char name[len + 6];
svc_t *svc;
while ((len = read(fd, buf, sizeof(buf)))) {
struct inotify_event *notified = (struct inotify_event *)buf;
char name[notified->len + 6];
struct tty *entry;
if (-1 == len) {
if (errno == EINVAL)
setup();
if (errno == EINTR)
continue;
break; /* Likely EAGAIN */
snprintf(name, sizeof(name), "/dev/%s", tty);
svc = svc_find_by_tty(name);
if (svc) {
if (svc_is_blocked(svc) && creat) {
_d("%s: blocked, re-enabling", svc_ident(svc, NULL, 0));
svc_start(svc);
} else if (svc->pid) {
_d("%s: missing ...", svc_ident(svc, NULL, 0));
svc_missing(svc);
}
snprintf(name, sizeof(name), "/dev/%s", notified->name);
entry = tty_find(name);
if (entry && tty_enabled(entry)) {
if (notified->mask & IN_CREATE)
tty_start(entry);
else if (entry->pid)
tty_stop(entry);
}
service_step_all(SVC_TYPE_TTY);
}
}
static void tty_watcher(void *arg, int fd, int events)
{
static char ev_buf[8 *(sizeof(struct inotify_event) + NAME_MAX + 1) + 1];
struct inotify_event *ev;
ssize_t sz;
size_t off;
sz = read(fd, ev_buf, sizeof(ev_buf) - 1);
if (sz <= 0) {
_pe("invalid inotify event");
return;
}
ev_buf[sz] = 0;
for (off = 0; off < (size_t)sz; off += sizeof(*ev) + ev->len) {
if (off + sizeof(*ev) > (size_t)sz)
break;
ev = (struct inotify_event *)&ev_buf[off];
if (off + sizeof(*ev) + ev->len > (size_t)sz)
break;
if (!ev->mask)
continue;
_d("tty %s, event: 0x%08x", ev->name, ev->mask);
do_tty(ev->name, ev->len, ev->mask & IN_CREATE);
}
}
+9 -4
View File
@@ -37,10 +37,11 @@ static void setup(void *arg)
#ifdef RANDOMSEED
if (!fexist(RANDOMSEED)) {
int ret = 1;
mode_t prev;
FILE *fp;
print_desc("Bootstrapping random seed", NULL);
umask(077);
prev = umask(077);
fp = fopen(RANDOMSEED, "w");
if (fp) {
int iter = 128;
@@ -57,7 +58,7 @@ static void setup(void *arg)
ret = fclose(fp);
}
print_result(ret);
umask(0);
umask(prev);
}
print_desc("Initializing random number generator", NULL);
@@ -68,10 +69,14 @@ static void setup(void *arg)
static void save(void *arg)
{
#ifdef RANDOMSEED
umask(077);
mode_t prev;
prev = umask(077);
print_desc("Saving random seed", NULL);
print_result(512 != copyfile("/dev/urandom", RANDOMSEED, 512, 0));
umask(0);
umask(prev);
#endif
}
+133
View File
@@ -0,0 +1,133 @@
/* User-defined condtion event monitor for the Finit condition engine
*
* Copyright (c) 2021 Joachim Wiberg <troglobit@gmail.com>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include <fnmatch.h>
#include <glob.h>
#include <limits.h>
#include <paths.h>
#include "finit.h"
#include "cond.h"
#include "pid.h"
#include "plugin.h"
#include "iwatch.h"
static struct iwatch iw_usr;
static void usr_cond(char *name, uint32_t mask)
{
char cond[MAX_COND_LEN] = COND_USR;
strlcat(cond, name, sizeof(cond));
cond_update(cond);
}
static void usr_callback(void *arg, int fd, int events)
{
static char ev_buf[8 *(sizeof(struct inotify_event) + NAME_MAX + 1) + 1];
struct inotify_event *ev;
ssize_t sz;
size_t off;
sz = read(fd, ev_buf, sizeof(ev_buf) - 1);
if (sz <= 0) {
_pe("invalid inotify event");
return;
}
ev_buf[sz] = 0;
for (off = 0; off < (size_t)sz; off += sizeof(*ev) + ev->len) {
if (off + sizeof(*ev) > (size_t)sz)
break;
ev = (struct inotify_event *)&ev_buf[off];
if (off + sizeof(*ev) + ev->len > (size_t)sz)
break;
_d("name %s, event: 0x%08x", ev->name, ev->mask);
if (!ev->mask)
continue;
if (ev->mask & IN_ISDIR)
continue; /* unsupported */
if (ev->mask & IN_DELETE)
sync(); /* dont ask */
usr_cond(ev->name, ev->mask);
}
}
static void usr_init(void *arg)
{
char usrdir[MAX_ARG_LEN];
char *path;
if (mkpath(pid_runpath(_PATH_CONDUSR, usrdir, sizeof(usrdir)), 0755) && errno != EEXIST) {
_pe("Failed creating %s condition directory, %s", COND_USR, _PATH_CONDUSR);
return;
}
path = realpath(_PATH_CONDUSR, NULL);
if (!path) {
_pe("Cannot figure out real path to %s, aborting", _PATH_CONDUSR);
return;
}
if (iwatch_add(&iw_usr, path, IN_ONLYDIR))
iwatch_exit(&iw_usr);
}
static plugin_t plugin = {
.name = __FILE__,
.hook[HOOK_BASEFS_UP] = { .cb = usr_init },
};
PLUGIN_INIT(plugin_init)
{
int fd;
fd = iwatch_init(&iw_usr);
if (fd < 0)
return;
plugin.io.fd = fd;
plugin.io.cb = usr_callback;
plugin.io.flags = PLUGIN_IO_READ;
plugin_register(&plugin);
}
PLUGIN_EXIT(plugin_exit)
{
iwatch_exit(&iw_usr);
plugin_unregister(&plugin);
}
/**
* Local Variables:
* indent-tabs-mode: t
* c-file-style: "linux"
* End:
*/
+5 -4
View File
@@ -32,13 +32,14 @@
static void setup(void *arg)
{
const char *username = "nobody";
char line[LINE_SIZE];
mode_t prev;
#ifdef PAM_CONSOLE
int fd;
#endif
char line[LINE_SIZE];
const char *username = "nobody";
umask(0);
prev = umask(0);
makedir("/var/run/console", 01777);
snprintf(line, sizeof(line), "/var/run/console/%s", username);
@@ -58,7 +59,7 @@ static void setup(void *arg)
if (whichp("restorecon"))
run("restorecon /tmp/.ICE-unix /tmp/.X11-unix");
umask(022);
umask(prev);
}
static plugin_t plugin = {
+20 -17
View File
@@ -1,6 +1,5 @@
EXTRA_DIST = cgreaper.sh rescue.conf sample.conf
AM_CPPFLAGS = -U_FORTIFY_SOURCE
AM_CPPFLAGS += -D_XOPEN_SOURCE=600 -D_BSD_SOURCE -D_GNU_SOURCE -D_DEFAULT_SOURCE
EXTRA_DIST = rescue.conf sample.conf
AM_CPPFLAGS = -D_XOPEN_SOURCE=600 -D_BSD_SOURCE -D_GNU_SOURCE -D_DEFAULT_SOURCE
if STATIC
AM_CPPFLAGS += -DENABLE_STATIC
AM_LDFLAGS = -static-libtool-libs
@@ -8,20 +7,21 @@ else
AM_LDFLAGS = -export-dynamic
endif
sbin_PROGRAMS = finit initctl
pkglibexec_SCRIPTS = cgreaper.sh
sbin_PROGRAMS = finit initctl
pkglibexec_PROGRAMS =
finit_pkglibdir = $(pkglibdir)
finit_pkglib_SCRIPTS = rescue.conf sample.conf
if WATCHDOGD
pkglibexec_PROGRAMS = watchdogd
pkglibexec_PROGRAMS += watchdogd
endif
if LOGIT
pkglibexec_PROGRAMS = logit
logit_SOURCES = logit.c
logit_CFLAGS = -W -Wall -Wextra -Wno-unused-parameter -std=gnu99
pkglibexec_PROGRAMS += logit
logit_SOURCES = logit.c logrotate.c
logit_CFLAGS = -W -Wall -Wextra -Wno-unused-parameter -std=gnu99
logit_CFLAGS += $(lite_CFLAGS)
logit_LDADD = $(lite_LIBS)
endif
finit_SOURCES = api.c cgroup.c cgroup.h \
@@ -43,6 +43,10 @@ finit_SOURCES = api.c cgroup.c cgroup.h \
tty.c tty.h \
util.c util.h \
utmp-api.c utmp-api.h
if LOGROTATE
finit_SOURCES += logrotate.c
endif
pkginclude_HEADERS = cond.h finit.h helpers.h log.h plugin.h svc.h
finit_CFLAGS = -W -Wall -Wextra -Wno-unused-parameter -std=gnu99
@@ -54,20 +58,19 @@ else
finit_LDADD += -ldl
endif
initctl_SOURCES = initctl.c client.c client.h \
reboot.c serv.c serv.h svc.h \
cond.c cond.h util.c util.h
initctl_SOURCES = initctl.c initctl.h cgutil.c cgutil.h \
client.c client.h cond.c cond.h reboot.c \
serv.c serv.h svc.h util.c util.h
initctl_CFLAGS = -W -Wall -Wextra -Wno-unused-parameter -std=gnu99
initctl_CFLAGS += $(lite_CFLAGS)
initctl_LDADD = $(lite_LIBS)
initctl_CFLAGS += $(lite_CFLAGS) $(uev_CFLAGS)
initctl_LDADD = $(lite_LIBS) $(uev_LIBS)
INIT_LNKS = init
INIT_LNKS = init telinit
REBOOT_LNKS = reboot shutdown halt poweroff suspend
if WATCHDOGD
watchdogd_SOURCES = watchdog.c watchdog.h
watchdogd_CFLAGS = -W -Wall -Wextra -Wno-unused-parameter -std=gnu99
#log.c log.h
endif
# Hook in install to add finit and reboot symlink(s)
+47 -17
View File
@@ -74,7 +74,24 @@ static int start(svc_t *svc)
return 0;
}
/*
* NOTE: this does not wait for svc to be stopped first, that is the
* responsibility of initctl to do. Otherwise we'd block PID 1,
* or introduce some nasty race conditions.
*/
static int restart(svc_t *svc)
{
if (!svc)
return 1;
svc_mark_dirty(svc);
svc_start(svc);
service_step(svc);
return 0;
}
static int reload(svc_t *svc)
{
if (!svc)
return 1;
@@ -88,9 +105,10 @@ static int restart(svc_t *svc)
return 0;
}
static int do_start (char *buf, size_t len) { return call(start, buf, len); }
static int do_stop (char *buf, size_t len) { return call(stop, buf, len); }
static int do_start (char *buf, size_t len) { return call(start, buf, len); }
static int do_restart(char *buf, size_t len) { return call(restart, buf, len); }
static int do_reload (char *buf, size_t len) { return call(reload, buf, len); }
static char query_buf[368];
static int missing(char *job, char *id)
@@ -110,7 +128,7 @@ static int missing(char *job, char *id)
static int do_query(char *buf, size_t len)
{
memset(query_buf, 0, sizeof(query_buf));
query_buf[0] = 0;
if (svc_parse_jobstr(buf, len, NULL, missing)) {
memcpy(buf, query_buf, len);
return 1;
@@ -237,7 +255,7 @@ ev_t ev_list[] = {
static void send_svc(int sd, svc_t *svc)
{
svc_t empty;
svc_t empty = { 0 };
size_t len;
if (!svc) {
@@ -252,10 +270,10 @@ static void send_svc(int sd, svc_t *svc)
static void api_cb(uev_t *w, void *arg, int events)
{
int sd, lvl;
svc_t *svc;
static svc_t *iter = NULL;
struct init_request rq;
int sd, lvl;
svc_t *svc;
sd = accept(w->fd, NULL, NULL);
if (sd < 0) {
@@ -327,16 +345,22 @@ static void api_cb(uev_t *w, void *arg, int events)
result = do_start(rq.data, sizeof(rq.data));
break;
case INIT_CMD_RESTART_SVC:
_d("restart %s", rq.data);
strterm(rq.data, sizeof(rq.data));
result = do_restart(rq.data, sizeof(rq.data));
break;
case INIT_CMD_STOP_SVC:
_d("stop %s", rq.data);
strterm(rq.data, sizeof(rq.data));
result = do_stop(rq.data, sizeof(rq.data));
break;
case INIT_CMD_RESTART_SVC:
_d("restart %s", rq.data);
case INIT_CMD_RELOAD_SVC:
_d("reload %s", rq.data);
strterm(rq.data, sizeof(rq.data));
result = do_restart(rq.data, sizeof(rq.data));
result = do_reload(rq.data, sizeof(rq.data));
break;
case INIT_CMD_GET_RUNLEVEL:
@@ -364,24 +388,30 @@ static void api_cb(uev_t *w, void *arg, int events)
}
_e("Request to hand-over wdog ... to PID %d", rq.runlevel);
if (!svc_find_by_pid(rq.runlevel)) {
svc = svc_find_by_pid(rq.runlevel);
if (!svc) {
logit(LOG_ERR, "Cannot find PID %d, not registered.", rq.runlevel);
break;
}
/* Disable and allow Finit to collect bundled watchdog */
if (wdog) {
logit(LOG_NOTICE, "Stopping and removing %s (PID:%d)", wdog->cmd, wdog->pid);
stop(wdog);
if (wdog && wdog != svc) {
char name[32];
svc_ident(svc, name, sizeof(name));
logit(LOG_NOTICE, "Handing over wdog ctrl from %s[%d] to %s[%d]",
svc_ident(wdog, NULL, 0), wdog->pid, name, svc->pid);
if (wdog->protect) {
wdog->protect = 0;
wdog->runlevels = 0;
logit(LOG_NOTICE, "Stopping and deleting built-in watchdog.");
stop(wdog);
svc_del(wdog);
}
}
wdog = svc;
break;
case INIT_CMD_SVC_ITER:
_d("svc iter, first: %d", rq.runlevel);
// _d("svc iter, first: %d", rq.runlevel);
/*
* XXX: This severly limits the number of
* simultaneous client connections, but will
@@ -444,7 +474,7 @@ int api_init(uev_ctx_t *ctx)
};
_d("Setting up external API socket ...");
sd = socket(AF_UNIX, SOCK_STREAM | SOCK_CLOEXEC, 0);
sd = socket(AF_UNIX, SOCK_SEQPACKET | SOCK_CLOEXEC, 0);
if (-1 == sd) {
_pe("Failed starting external API socket");
return 1;
-11
View File
@@ -1,11 +0,0 @@
#!/bin/sh
# Called by kernel when last child in cgroup exists
BASE=/sys/fs/cgroup/finit
PROC=`basename $1`
DIR="$BASE$1"
/libexec/finit/logit -p daemon.info -t finit "$PROC stopped, cleaning up control group $DIR"
rmdir $DIR
exit 0
+427 -80
View File
@@ -25,111 +25,458 @@
#include <stdio.h>
#include <string.h>
#include <lite/lite.h>
#include <lite/queue.h>
#include <sys/mount.h>
#include <sys/sysinfo.h> /* get_nprocs_conf() */
#include "cgroup.h"
#include "finit.h"
#include "iwatch.h"
#include "log.h"
#include "util.h"
static int cg_init = 0;
struct cg {
TAILQ_ENTRY(cg) link;
/*
* Called by Finit at early boot to mount initial cgroups
*/
void cgroup_init(void)
char *name; /* top-level group name */
char *cfg; /* kernel settings */
int active; /* for mark & sweep */
int protected; /* for init/, user/, & system/ */
};
static TAILQ_HEAD(, cg) cgroups = TAILQ_HEAD_INITIALIZER(cgroups);
static char controllers[256];
static struct iwatch iw_cgroup;
static uev_t cgw;
static void cgset(const char *path, char *ctrl, char *prop)
{
FILE *fp;
char buf[80];
int opts = MS_NODEV | MS_NOEXEC | MS_NOSUID;
char *val;
fp = fopen("/proc/cgroups", "r");
if (!fp) {
_d("No cgroup support");
_d("path %s, ctrl %s, prop %s", path ?: "NIL", ctrl ?: "NIL", prop ?: "NIL");
if (!path || !ctrl) {
_e("Missing path or controller, skipping!");
return;
}
if (mount("none", "/sys/fs/cgroup", "tmpfs", opts, NULL)) {
_d("Failed mounting cgroups");
goto fail;
if (!prop) {
prop = strchr(ctrl, '.');
if (!prop) {
_e("Invalid cgroup ctrl syntax: %s", ctrl);
return;
}
*prop++ = 0;
}
/* Skip first line, header */
fgets(buf, sizeof(buf), fp);
while (fgets(buf, sizeof(buf), fp)) {
char *cgroup;
char rc[80];
val = strchr(prop, ':');
if (!val) {
_e("Missing cgroup ctrl value, prop %s", prop);
return;
}
*val++ = 0;
cgroup = strtok(buf, "\t ");
if (!cgroup)
continue;
snprintf(rc, sizeof(rc), "/sys/fs/cgroup/%s", cgroup);
if (mkdir(rc, 0755) && EEXIST != errno)
continue;
if (mount("cgroup", rc, "cgroup", opts, cgroup))
_d("Failed mounting %s cgroup on %s", cgroup, rc);
/* disallow sneaky relative paths */
if (strstr(ctrl, "..") || strstr(prop, "..")) {
_e("Possible security violation; '..' not allowed in cgroup config!");
return;
}
/* Default cgroups for process monitoring */
if (mkdir("/sys/fs/cgroup/finit", 0755) && EEXIST != errno)
goto fail;
if (mount("none", "/sys/fs/cgroup/finit", "cgroup", opts, "none,name=finit")) {
_pe("Failed mounting Finit cgroup hierarchy");
goto fail;
}
/* Set up reaper and enable callbacks */
echo("/sys/fs/cgroup/finit/release_agent", 0, FINIT_LIBPATH_ "/cgreaper.sh");
echo("/sys/fs/cgroup/finit/notify_on_release", 0, "1");
/* Default groups, PID 1, services, and user/login processes */
if (mkdir("/sys/fs/cgroup/finit/init", 0755) && EEXIST != errno)
goto fail;
if (mkdir("/sys/fs/cgroup/finit/system", 0755) && EEXIST != errno)
goto fail;
if (mkdir("/sys/fs/cgroup/finit/user", 0755) && EEXIST != errno)
goto fail;
/* Move ourselves to init */
echo("/sys/fs/cgroup/finit/init/cgroup.procs", 0, "1");
/* We have signal, main screen turn on! */
cg_init = 1;
fail:
fclose(fp);
_d("%s/%s.%s <= %s", path, ctrl, prop, val);
if (fnwrite(val, "%s/%s.%s", path, ctrl, prop))
_pe("Failed setting %s/%s.%s = %s", path, ctrl, prop, val);
}
static int move_pid(char *group, char *name, char *id, int pid)
/*
* Settings for a cgroup are on the form: cpu.weight:1234,mem.max:4321,...
* Finit supports the short-form 'mem.', replacing it with 'memory.' when
* writing the setting to the file system.
*/
static void group_init(char *path, int leaf, const char *cfg)
{
char *ptr, *s;
_d("path %s, leaf %d, cfg %s", path, leaf, cfg ?: "NIL");
if (!fisdir(path)) {
if (mkdir(path, 0755)) {
_pe("Failed creating cgroup %s", path);
return;
}
/* enable detected controllers on domain groups */
if (!leaf && fnwrite(controllers, "%s/cgroup.subtree_control", path))
_pe("Failed enabling %s for %s", controllers, path);
}
if (!cfg || !cfg[0])
return;
s = strdupa(cfg);
if (!s) {
_pe("Failed activating cgroup cfg for %s", path);
return;
}
_d("%s <=> %s", path, s);
ptr = strtok(s, ",");
while (ptr) {
_d("ptr: %s", ptr);
if (!strncmp("mem.", ptr, 4))
cgset(path, "memory", &ptr[4]);
else
cgset(path, ptr, NULL);
ptr = strtok(NULL, ",");
}
}
static int cgroup_leaf_init(char *group, char *name, int pid, const char *cfg)
{
char path[256];
snprintf(path, sizeof(path), "/sys/fs/cgroup/%s/%s:%s", group, name, id);
if (mkdir(path, 0755) && errno != EEXIST)
return 1;
strlcat(path, "/cgroup.procs", sizeof(path));
return echo(path, 0, "%d", pid);
}
int cgroup_user(char *name)
{
if (!cg_init)
return 0;
return move_pid("finit/user", name, "0", getpid());
}
int cgroup_service(char *nm, char *id, int pid)
{
if (!cg_init)
return 0;
if (pid <= 0) {
_d("group %s, name %s, pid %d, cfg %s", group, name, pid, cfg ?: "NIL");
if (pid < 0 || pid == 1) {
errno = EINVAL;
return 1;
}
return move_pid("finit/system", nm, id, pid);
/* create and initialize new group */
snprintf(path, sizeof(path), "/sys/fs/cgroup/%s/%s", group, name);
group_init(path, 1, cfg);
/* move process to new group */
if (fnwrite(str("%d", pid), "%s/cgroup.procs", path))
_pe("Failed moving pid %d to group %s", pid, path);
strlcat(path, "/cgroup.events", sizeof(path));
return iwatch_add(&iw_cgroup, path, 0);
}
int cgroup_user(char *name, int pid)
{
return cgroup_leaf_init("user", name, pid, NULL);
}
int cgroup_service(char *name, int pid, struct cgroup *cg)
{
char *group = "system";
if (cg && cg->name[0]) {
char path[256];
if (!strcmp(cg->name, "root"))
return fnwrite(str("%d", pid), FINIT_CGPATH "/cgroup.procs");
snprintf(path, sizeof(path), "/sys/fs/cgroup/%s", cg->name);
if (fisdir(path))
group = cg->name;
}
return cgroup_leaf_init(group, name, pid, cg ? cg->cfg : NULL);
}
static void append_ctrl(char *ctrl)
{
if (controllers[0])
strlcat(controllers, " ", sizeof(controllers));
strlcat(controllers, "+", sizeof(controllers));
strlcat(controllers, ctrl, sizeof(controllers));
}
static void cgroup_handle_event(char *event, uint32_t mask)
{
char path[strlen(event) + 1];
char buf[80];
char *ptr;
FILE *fp;
_d("event: '%s', mask: %08x", event, mask);
if (!(mask & IN_MODIFY))
return;
fp = fopen(event, "r");
if (!fp) {
_d("Failed opening %s, skipping ...", event);
return;
}
while (fgets(buf, sizeof(buf), fp)) {
if (strncmp(buf, "populated", 9))
continue;
chomp(buf);
if (atoi(&buf[10]))
break;
strlcpy(path, event, sizeof(path));
ptr = strrchr(path, '/');
if (ptr) {
*ptr = 0;
if (!cgroup_del(path)) {
/*
* try with parent, top-level group, we
* may get events out-of-order *sigh*
*/
ptr = strrchr(path, '/');
if (!ptr)
break;
*ptr = 0;
cgroup_del(path);
}
}
break;
}
fclose(fp);
}
static void cgroup_events_cb(uev_t *w, void *arg, int events)
{
static char ev_buf[8 *(sizeof(struct inotify_event) + NAME_MAX + 1) + 1];
struct inotify_event *ev;
ssize_t sz;
size_t off;
sz = read(w->fd, ev_buf, sizeof(ev_buf) - 1);
if (sz <= 0) {
_pe("invalid inotify event");
return;
}
ev_buf[sz] = 0;
for (off = 0; off < (size_t)sz; off += sizeof(*ev) + ev->len) {
struct iwatch_path *iwp;
if (off + sizeof(*ev) > (size_t)sz)
break;
ev = (struct inotify_event *)&ev_buf[off];
if (off + sizeof(*ev) + ev->len > (size_t)sz)
break;
if (!ev->mask)
continue;
/* Find base path for this event */
iwp = iwatch_find_by_wd(&iw_cgroup, ev->wd);
if (!iwp || !iwp->path)
continue;
cgroup_handle_event(iwp->path, ev->mask);
}
#ifdef ENABLE_AUTO_RELOAD
if (conf_any_change())
service_reload_dynamic();
#endif
}
static struct cg *cgroup_find(char *name)
{
struct cg *cg;
TAILQ_FOREACH(cg, &cgroups, link) {
if (strcmp(cg->name, name))
continue;
return cg;
}
return NULL;
}
/*
* Marks all unprotected cgroups for deletion (during reload)
*/
void cgroup_mark_all(void)
{
struct cg *cg;
TAILQ_FOREACH(cg, &cgroups, link) {
if (cg->protected)
continue;
cg->active = 0;
}
}
/*
* Remove (try to) all unused cgroups
*/
void cgroup_cleanup(void)
{
struct cg *cg, *tmp;
char path[256];
TAILQ_FOREACH_SAFE(cg, &cgroups, link, tmp) {
if (cg->active)
continue;
snprintf(path, sizeof(path), FINIT_CGPATH "/%s", cg->name);
cgroup_del(path);
}
}
/*
* Add, or update, settings for top-level cgroup
*/
int cgroup_add(char *name, char *cfg, int protected)
{
struct cg *cg;
if (!name)
return -1;
if (!cfg)
cfg = "";
cg = cgroup_find(name);
if (!cg) {
cg = malloc(sizeof(struct cg));
if (!cg) {
_pe("Failed allocating 'struct cg' for %s", name);
return -1;
}
cg->name = strdup(name);
if (!cg->name) {
_pe("Failed setting cgroup name %s", name);
free(cg);
return -1;
}
TAILQ_INSERT_TAIL(&cgroups, cg, link);
} else
free(cg->cfg);
cg->cfg = strdup(cfg);
if (!cg->cfg) {
_pe("Failed add/update of cgroup %s", name);
TAILQ_REMOVE(&cgroups, cg, link);
free(cg->name);
free(cg);
return -1;
}
cg->protected = protected;
cg->active = 1;
return 0;
}
/*
* Remove inactive top-level cgroup
*/
int cgroup_del(char *dir)
{
struct cg *cg;
char path[256];
TAILQ_FOREACH(cg, &cgroups, link) {
snprintf(path, sizeof(path), FINIT_CGPATH "/%s", cg->name);
if (strcmp(path, dir))
continue;
if (cg->active)
return -1;
break;
}
if (rmdir(dir) && errno != ENOENT) {
_d("Failed removing %s: %s", dir, strerror(errno));
return -1;
}
if (cg) {
TAILQ_REMOVE(&cgroups, cg, link);
free(cg->name);
free(cg->cfg);
free(cg);
}
return 0;
}
/* the top-level init cgroup is a leaf, that's ensured in cgroup_init() */
void cgroup_config(void)
{
struct cg *cg;
TAILQ_FOREACH(cg, &cgroups, link) {
char path[256];
int leaf = 0;
if (!cg->active)
continue;
if (!strcmp(cg->name, "init"))
leaf = 1; /* reserved */
snprintf(path, sizeof(path), "%s/%s", FINIT_CGPATH, cg->name);
group_init(path, leaf, cg->cfg);
strlcat(path, "/cgroup.events", sizeof(path));
iwatch_add(&iw_cgroup, path, 0);
}
}
/*
* Called by Finit at early boot to mount initial cgroups
*/
void cgroup_init(uev_ctx_t *ctx)
{
int opts = MS_NODEV | MS_NOEXEC | MS_NOSUID;
char buf[80];
FILE *fp;
int fd;
if (mount("none", FINIT_CGPATH, "cgroup2", opts, NULL)) {
_pe("Failed mounting cgroup v2");
return;
}
/* Find available controllers */
fp = fopen(FINIT_CGPATH "/cgroup.controllers", "r");
if (!fp) {
_pe("Failed opening %s", FINIT_CGPATH "/cgroup.controllers");
return;
}
if (fgets(buf, sizeof(buf), fp)) {
char *cgroup;
cgroup = strtok(chomp(buf), "\t ");
while (cgroup) {
append_ctrl(cgroup);
cgroup = strtok(NULL, "\t ");
}
}
fclose(fp);
/* Enable all controllers */
if (fnwrite(controllers, FINIT_CGPATH "/cgroup.subtree_control"))
_pe("Failed enabling %s for %s", controllers, FINIT_CGPATH "/cgroup.subtree_control");
/* Default (protected) groups, PID 1, services, and user/login processes */
cgroup_add("init", "cpu.weight:100", 1);
cgroup_add("system", "cpu.weight:9800", 1);
cgroup_add("user", "cpu.weight:100", 1);
cgroup_config();
/* Move ourselves to init (best effort, otherwise run in 'root' group */
if (fnwrite("1", FINIT_CGPATH "/init/cgroup.procs"))
_pe("Failed moving PID 1 to cgroup ", FINIT_CGPATH "/init");
/* prepare cgroup.events watcher */
fd = iwatch_init(&iw_cgroup);
if (uev_io_init(ctx, &cgw, cgroup_events_cb, NULL, fd, UEV_READ)) {
_pe("Failed setting up cgroup.events watcher");
close(fd);
}
}
/**
+17 -3
View File
@@ -24,9 +24,23 @@
#ifndef FINIT_CGROUP_H_
#define FINIT_CGROUP_H_
void cgroup_init (void);
#include <uev/uev.h>
int cgroup_user (char *name);
int cgroup_service (char *cmd, char *id, int pid);
struct cgroup {
char name[16];
char cfg[128];
};
void cgroup_mark_all(void);
void cgroup_cleanup (void);
int cgroup_add (char *name, char *cfg, int protected);
int cgroup_del (char *dir);
void cgroup_config (void);
void cgroup_init (uev_ctx_t *ctx);
int cgroup_user (char *name, int pid);
int cgroup_service (char *name, int pid, struct cgroup *cg);
#endif /* FINIT_CGROUP_H_ */
+654
View File
@@ -0,0 +1,654 @@
/* New client tool, replaces old /dev/initctl API and telinit tool
*
* Copyright (c) 2019-2021 Joachim Wiberg <troglobit@gmail.com>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "config.h"
#include <err.h>
#include <dirent.h>
#include <stdio.h>
#include <signal.h>
#include <stdlib.h>
#include <search.h>
#include <inttypes.h>
#include <lite/lite.h>
#include <sys/sysinfo.h> /* sysinfo() */
#include "cgutil.h"
#include "initctl.h"
#define CDIM plain ? "" : "\e[2m"
#define CRST plain ? "" : "\e[0m"
#define NONE " "
#define PIPE plain ? "| " : "│ "
#define FORK plain ? "|-" : "├─"
#define END plain ? "`-" : "└─"
uint64_t total_ram; /* From sysinfo() */
struct cg dummy; /* empty result "NULL" */
struct cg *list;
char *pid_cmdline(int pid, char *buf, size_t len)
{
size_t i, sz;
char *ptr;
FILE *fp;
fp = fopenf("r", "/proc/%d/cmdline", pid);
if (!fp) {
buf[0] = 0;
return buf;
}
sz = fread(buf, sizeof(buf[0]), len - 1, fp);
fclose(fp);
if (!sz)
return NULL; /* kernel thread */
buf[sz] = 0;
ptr = strchr(buf, 0);
if (ptr && ptr != buf) {
ptr++;
sz -= ptr - buf;
memmove(buf, ptr, sz + 1);
}
for (i = 0; i < sz; i++) {
if (buf[i] == 0)
buf[i] = ' ';
}
return buf;
}
char *pid_comm(int pid, char *buf, size_t len)
{
char *ptr = NULL;
FILE *fp;
fp = fopenf("r", "/proc/%d/comm", pid);
if (!fp)
return NULL;
if (fgets(buf, len, fp))
ptr = chomp(buf);
fclose(fp);
return ptr;
}
char *pid_cgroup(int pid, char *buf, size_t len)
{
char *ptr = NULL;
FILE *fp;
fp = fopenf("r", "/proc/%d/cgroup", pid);
if (!fp)
return NULL;
if (fgets(buf, len, fp))
ptr = chomp(buf);
fclose(fp);
if (ptr)
ptr = strchr(buf, '/');
return ptr;
}
static char *cgroup_val(char *path, char *file, char *buf, size_t len)
{
char *val = NULL;
FILE *fp;
fp = fopenf("r", "%s/%s", path, file);
if (fp) {
if (fgets(buf, len, fp)) {
val = chomp(buf);
len = strcspn(val, " \t");
val[len] = 0;
}
fclose(fp);
}
return val;
}
static uint64_t cgroup_uint64(char *path, char *file)
{
uint64_t val = 0;
char buf[42];
if (cgroup_val(path, file, buf, sizeof(buf)))
val = strtoull(buf, NULL, 10);
return val;
}
static char *cgroup_memval(char *path, char *file, char *buf, size_t len)
{
char data[42];
if (cgroup_val(path, file, data, sizeof(data))) {
if (!strcmp(data, "max"))
strlcpy(buf, data, len);
else
memsz(strtoull(data, NULL, 10), buf, len);
} else
buf[0] = 0;
return buf;
}
static uint64_t cgroup_memuse(struct cg *cg)
{
char buf[42];
FILE *fp;
fp = fopenf("r", "%s/memory.stat", cg->cg_path);
if (fp) {
cg->cg_rss = 0;
cg->cg_vmlib = 0;
while (fgets(buf, sizeof(buf), fp)) {
chomp(buf);
if (!strncmp(buf, "anon", 4)) {
cg->cg_rss += strtoull(&buf[5], NULL, 10);
continue;
}
if (!strncmp(buf, "slab", 4)) {
cg->cg_rss += strtoull(&buf[5], NULL, 10);
continue;
}
if (!strncmp(buf, "kernel_stack", 12)) {
cg->cg_rss += strtoull(&buf[5], NULL, 10);
continue;
}
if (!strncmp(buf, "pagetables", 10)) {
cg->cg_rss += strtoull(&buf[5], NULL, 10);
continue;
}
if (!strncmp(buf, "percpu", 6)) {
cg->cg_rss += strtoull(&buf[5], NULL, 10);
continue;
}
if (!strncmp(buf, "sock", 4)) {
cg->cg_rss += strtoull(&buf[5], NULL, 10);
continue;
}
if (!strncmp(buf, "file", 4)) {
cg->cg_vmlib += strtoull(&buf[5], NULL, 10);
continue;
}
if (!strncmp(buf, "file_mapped", 11)) {
cg->cg_vmlib += strtoull(&buf[5], NULL, 10);
continue;
}
}
fclose(fp);
}
cg->cg_memshare = (float)(cg->cg_rss * 100 / total_ram);
return cg->cg_vmsize = cgroup_uint64(cg->cg_path, "memory.current");
}
uint64_t cgroup_memory(char *group)
{
char path[256];
paste(path, sizeof(path), FINIT_CGPATH, group);
return cgroup_uint64(path, "memory.current");
}
static float cgroup_cpuload(struct cg *cg)
{
char fn[256];
char buf[64];
FILE *fp;
snprintf(fn, sizeof(fn), "%s/cpu.stat", cg->cg_path);
fp = fopen(fn, "r");
if (!fp)
err(1, "Cannot open %s", fn);
while (fgets(buf, sizeof(buf), fp)) {
uint64_t curr;
chomp(buf);
if (strncmp(buf, "usage_usec", 10))
continue;
curr = strtoull(&buf[11], NULL, 10);
if (cg->cg_prev != 0) {
uint64_t diff = curr - cg->cg_prev;
/* this expects 1 sec poll interval */
cg->cg_load = (float)(diff / 1000000);
cg->cg_load *= 100.0;
}
cg->cg_prev = curr;
break;
}
fclose(fp);
return cg->cg_load;
}
static struct cg *append(char *path)
{
struct cg *cg;
char fn[256];
ENTRY item;
snprintf(fn, sizeof(fn), "%s/cpu.stat", path);
if (access(fn, F_OK)) {
/* older kernels, 4.19, don't have summary cpu.stat in root */
if (strcmp(path, FINIT_CGPATH))
warn("not a cgroup path with cpu controller, %s", path);
return NULL;
}
cg = calloc(1, sizeof(struct cg));
if (!cg)
err(1, "failed allocating struct cg");
cg->cg_path = strdup(path);
if (list)
cg->cg_next = list;
list = cg;
item.key = cg->cg_path;
item.data = cg;
if (!hsearch(item, ENTER))
err(1, "failed adding to hash table");
return cg;
}
static struct cg *find(char *path)
{
ENTRY *ep, item = { path, NULL };
ep = hsearch(item, FIND);
if (ep)
return ep->data;
return append(path);
}
/* update stats */
struct cg *cg_stats(char *path)
{
struct cg *cg;
cg = find(path);
if (!cg)
return &dummy;
cgroup_cpuload(cg);
cgroup_memuse(cg);
return cg;
}
/* query config */
struct cg *cg_conf(char *path)
{
static struct cg cg;
cgroup_val(path, "memory.min", cg.cg_mem.min, sizeof(cg.cg_mem.min));
cgroup_memval(path, "memory.max", cg.cg_mem.max, sizeof(cg.cg_mem.max));
cgroup_val(path, "cpu.weight", cg.cg_cpu.weight, sizeof(cg.cg_cpu.weight));
cgroup_val(path, "cpu.max", cg.cg_cpu.max, sizeof(cg.cg_cpu.max));
cgroup_val(path, "cpuset.cpus.effective", cg.cg_cpu.set, sizeof(cg.cg_cpu.set));
cg.cg_vmsize = cgroup_uint64(path, "memory.current");
return &cg;
}
static int cgroup_filter(const struct dirent *entry)
{
/* Skip current dir ".", and prev dir "..", from list of files */
if ((1 == strlen(entry->d_name) && entry->d_name[0] == '.') ||
(2 == strlen(entry->d_name) && !strcmp(entry->d_name, "..")))
return 0;
if (entry->d_name[0] == '.')
return 0;
if (entry->d_type != DT_DIR)
return 0;
return 1;
}
int cgroup_tree(char *path, char *pfx, int mode, int pos)
{
struct dirent **namelist = NULL;
char s[32], r[32], l[32];
char row[ttcols + 9]; /* + control codes */
size_t rlen = sizeof(row) - 1;
size_t rplen = rlen - 9;
struct stat st;
struct cg *cg;
char buf[512];
int rc = 0;
FILE *fp;
int i, n;
int num;
if (pos >= ttrows)
return 0;
if (-1 == lstat(path, &st))
return 1;
if ((st.st_mode & S_IFMT) != S_IFDIR) {
errno = ENOTDIR;
return -1;
}
fp = fopenf("r", "%s/cgroup.procs", path);
if (!fp)
return -1;
num = 0;
while (fgets(buf, sizeof(buf), fp))
num++;
if (!pfx) {
pfx = "";
switch (mode) {
case 1:
cg = cg_stats(path);
snprintf(row, rplen, "\r %6.6s %6.6s %6.6s %5.1f %5.1f %s",
memsz(cg->cg_vmsize, s, sizeof(s)),
memsz(cg->cg_rss, r, sizeof(r)),
memsz(cg->cg_vmlib, l, sizeof(l)),
cg->cg_memshare, cg->cg_load, path);
break;
case 2:
cg = cg_conf(path);
snprintf(row, rplen, "\r%6.6s [%-6.6s%6.6s] %6s [%-6.6s%6.6s] %s",
memsz(cg->cg_vmsize, s, sizeof(s)),
cg->cg_mem.min, cg->cg_mem.max, cg->cg_cpu.set,
cg->cg_cpu.weight, cg->cg_cpu.max, path);
break;
default:
strlcpy(row, "\r", rplen);
strlcat(row, path, rplen);
break;
}
puts(row);
}
if (num > 0) {
rewind(fp);
i = 0;
while (fgets(buf, sizeof(buf), fp)) {
char comm[80] = { 0 };
pid_t pid;
pid = atoi(chomp(buf));
if (pid <= 0)
continue;
/* skip kernel threads for now (no cmdline) */
pid_comm(pid, comm, sizeof(comm));
if (pid_cmdline(pid, buf, sizeof(buf))) {
char proc[ttcols];
int len;
switch (mode) {
case 1:
snprintf(row, rplen, "\r%37s", " ");
break;
case 2:
snprintf(row, rplen, "\r --.-- [ ] [ ] ");
break;
default:
strlcpy(row, "\r", rplen);
break;
}
strlcat(row, pfx, rplen);
strlcat(row, ++i == num ? END : FORK, rlen);
snprintf(proc, sizeof(proc), " %d %s %s", pid, comm, buf);
if (plain) {
strlcat(row, proc, rplen);
} else {
strlcat(row, CDIM, rlen);
strlcat(row, proc, rlen);
len = strlen(row) + strlen(CRST);
if (len > (int)rlen)
row[rlen - strlen(CRST)] = 0;
strlcat(row, CRST, sizeof(row));
}
puts(row);
}
if (mode == 1) {
pos += i;
if (pos >= ttrows)
break;
}
}
}
fclose(fp);
n = scandir(path, &namelist, cgroup_filter, alphasort);
if (n > 0) {
for (i = 0; i < n; i++) {
char *nm = namelist[i]->d_name;
char prefix[80];
snprintf(buf, sizeof(buf), "%s/%s", path, nm);
switch (mode) {
case 1:
cg = cg_stats(buf);
snprintf(row, rplen,
"\r %6.6s %6.6s %6.6s %5.1f %5.1f ",
memsz(cg->cg_vmsize, s, sizeof(s)),
memsz(cg->cg_rss, r, sizeof(r)),
memsz(cg->cg_vmlib, l, sizeof(l)),
cg->cg_memshare, cg->cg_load);
break;
case 2:
cg = cg_conf(buf);
snprintf(row, rplen, "\r%6.6s [%-6.6s%6.6s] %6.6s [%-6.6s%6.6s] ",
memsz(cg->cg_vmsize, s, sizeof(s)),
cg->cg_mem.min, cg->cg_mem.max,
cg->cg_cpu.set, cg->cg_cpu.weight, cg->cg_cpu.max);
break;
default:
strlcpy(row, "\r", rplen);
break;
}
strlcat(row, pfx, rplen);
if (i + 1 == n) {
strlcat(row, END, rplen);
snprintf(prefix, sizeof(prefix), "%s ", pfx);
} else {
strlcat(row, FORK, rplen);
snprintf(prefix, sizeof(prefix), "%s%s ", pfx, PIPE);
}
strlcat(row, " ", rplen);
strlcat(row, nm, rplen);
strlcat(row, "/ ", rplen);
puts(row);
rc += cgroup_tree(buf, prefix, mode, pos + i);
free(namelist[i]);
}
free(namelist);
}
return rc;
}
int show_cgps(char *arg)
{
char path[512];
if (!arg)
arg = FINIT_CGPATH;
else if (arg[0] != '/') {
paste(path, sizeof(path), FINIT_CGPATH, arg);
arg = path;
}
return cgroup_tree(arg, NULL, 0, 0);
}
static void cgtop(uev_t *w, void *arg, int events)
{
(void)w;
(void)events;
fputs("\e[2J\e[1;1H", stdout);
if (heading)
print_header(" VmSIZE RSS VmLIB %%MEM %%CPU GROUP");
cgroup_tree(arg, NULL, 1, 0);
}
static void cleanup(void)
{
ttcooked();
showcursor();
puts("");
}
static void leave(uev_t *w, void *arg, int events)
{
(void)arg;
(void)events;
uev_exit(w->ctx);
}
static void key(uev_t *w, void *arg, int events)
{
char ch;
(void)arg;
(void)events;
if (read(w->fd, &ch, sizeof(ch)) != -1) {
switch (ch) {
case 'q':
uev_exit(w->ctx);
break;
default:
warnx("Got char 0x%02x", ch);
break;
}
}
}
int show_cgtop(char *arg)
{
struct sysinfo si = { 0 };
uev_t timer, input, sigint, sigterm, sigquit;
char path[512];
uev_ctx_t ctx;
int flags;
if (!arg)
arg = FINIT_CGPATH;
else if (arg[0] != '/') {
paste(path, sizeof(path), FINIT_CGPATH, arg);
arg = path;
}
if (!hcreate(ttrows + 25))
err(1, "failed creating hash table");
sysinfo(&si);
total_ram = si.totalram * si.mem_unit;
uev_init(&ctx);
uev_timer_init(&ctx, &timer, cgtop, arg, 1, ionce ? 0 : 1000);
if (!ionce && !plain) {
atexit(cleanup);
ttraw();
hidecursor();
flags = fcntl(STDIN_FILENO, F_GETFL);
if (flags != -1)
(void)fcntl(STDIN_FILENO, F_SETFL, flags | O_NONBLOCK);
(void)uev_io_init(&ctx, &input, key, NULL, STDIN_FILENO, UEV_READ);
(void)uev_signal_init(&ctx, &sigint, leave, NULL, SIGINT);
(void)uev_signal_init(&ctx, &sigterm, leave, NULL, SIGTERM);
(void)uev_signal_init(&ctx, &sigquit, leave, NULL, SIGQUIT);
}
return uev_run(&ctx, 0);
}
int show_cgroup(char *arg)
{
char path[512];
if (!arg)
arg = FINIT_CGPATH;
else if (arg[0] != '/') {
paste(path, sizeof(path), FINIT_CGPATH, arg);
arg = path;
}
/* memory.current memory.min memory.max cpuset.cpus cpu.weight cpu.max */
if (heading)
print_header(" MEM [MIN MAX] CPU [WEIGHT MAX] GROUP");
return cgroup_tree(arg, NULL, 2, 0);
}
/**
* Local Variables:
* indent-tabs-mode: t
* c-file-style: "linux"
* End:
*/
+77
View File
@@ -0,0 +1,77 @@
/* Cgroup utility functions for initctl
*
* Copyright (c) 2019-2021 Joachim Wiberg <troglobit@gmail.com>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#ifndef FINIT_CGUTIL_H_
#define FINIT_CGUTIL_H_
#include <stdint.h>
#include <stdlib.h>
struct cg {
struct cg *cg_next;
/* stats */
char *cg_path; /* path in /sys/fs/cgroup */
uint64_t cg_prev; /* cpuacct.usage */
uint64_t cg_rss; /* memory.stat */
uint64_t cg_vmlib; /* memory.stat */
uint64_t cg_vmsize; /* memory.current */
float cg_memshare; /* cg_rss / total_ram * 100 */
float cg_load; /* curr - prev / 10000000.0 */
/* config */
struct {
char min[32];
char max[32];
} cg_mem;
struct {
char set[16];
char weight[32];
char max[32];
} cg_cpu;
};
char *pid_cmdline (int pid, char *buf, size_t len);
char *pid_comm (int pid, char *buf, size_t len);
char *pid_cgroup (int pid, char *buf, size_t len);
uint64_t cgroup_memory(char *group);
struct cg *cg_stats(char *path);
struct cg *cg_conf (char *path);
int cgroup_tree (char *path, char *pfx, int mode, int pos);
int show_cgroup (char *arg);
int show_cgtop (char *arg);
int show_cgps (char *arg);
#endif /* FINIT_CGUTIL_H_ */
/**
* Local Variables:
* indent-tabs-mode: t
* c-file-style: "linux"
* End:
*/
+30 -16
View File
@@ -21,7 +21,9 @@
* THE SOFTWARE.
*/
#include <err.h>
#include <errno.h>
#include <poll.h>
#include <sys/socket.h>
#include <sys/un.h>
@@ -36,19 +38,14 @@ int client_connect(void)
.sun_path = INIT_SOCKET,
};
sd = socket(AF_UNIX, SOCK_STREAM, 0);
sd = socket(AF_UNIX, SOCK_SEQPACKET, 0);
if (-1 == sd)
goto error;
err(1, "Failed creating UNIX domain socket");
if (connect(sd, (struct sockaddr*)&sun, sizeof(sun)) == -1) {
close(sd);
goto error;
}
if (connect(sd, (struct sockaddr*)&sun, sizeof(sun)) == -1)
err(1, "Failed connecting to finit");
return sd;
error:
perror("Failed connecting to finit");
return -1;
}
int client_disconnect(void)
@@ -68,27 +65,44 @@ int client_disconnect(void)
int client_send(struct init_request *rq, ssize_t len)
{
struct pollfd pfd = { 0 };
int sd, result = 255;
sd = client_connect();
if (-1 == sd)
return -1;
if (write(sd, rq, len) != len)
goto error;
pfd.fd = sd;
pfd.events = POLLOUT;
if (poll(&pfd, 1, 2000) <= 0) {
warn("Timed out waiting for Finit, errno %d", errno);
goto exit;
}
if (read(sd, rq, len) != len)
goto error;
if (write(sd, rq, len) != len) {
warn("Failed communicating with Finit, errno %d", errno);
goto exit;
}
pfd.fd = sd;
pfd.events = POLLIN;
if (poll(&pfd, 1, 2000) <= 0) {
warn("Timed out waiting for reply from Finit, errno %d", errno);
goto exit;
}
if (read(sd, rq, len) != len) {
warn("Failed reading reply from Finit, errno %d", errno);
goto exit;
}
if (rq->cmd == INIT_CMD_NACK)
result = 1;
else
result = 0;
goto exit;
error:
perror("Failed communicating with finit");
exit:
client_disconnect();
return result;
}
+20 -37
View File
@@ -99,13 +99,14 @@ static void cond_bump_reconf(void)
unsigned int rgen;
/*
* If %COND_RECONF does not exist, cond_get_gen() returns 0
* If %_PATH_RECONF does not exist, cond_get_gen() returns 0
* meaning that rgen++ is always what we want.
*/
rgen = cond_get_gen(COND_RECONF);
rgen = cond_get_gen(_PATH_RECONF);
rgen++;
cond_set_gen(COND_RECONF, rgen);
if (cond_set_gen(_PATH_RECONF, rgen))
_pe("Failed setting %s to gen %d", _PATH_RECONF, rgen);
}
static int cond_checkpath(const char *path)
@@ -119,7 +120,7 @@ static int cond_checkpath(const char *path)
return 1;
}
if (makepath(dir) && errno != EEXIST) {
if (mkpath(dir, 0755) && errno != EEXIST) {
_pe("Failed creating dir '%s' for condition '%s'", dir, path);
return 1;
}
@@ -127,22 +128,22 @@ static int cond_checkpath(const char *path)
return 0;
}
int cond_set_path(const char *path, enum cond_state new)
int cond_set_path(const char *path, enum cond_state next)
{
enum cond_state old;
enum cond_state prev;
unsigned int rgen;
_d("%s", path);
_d("%s <= %d", path, next);
rgen = cond_get_gen(COND_RECONF);
rgen = cond_get_gen(_PATH_RECONF);
if (!rgen) {
_e("Unable to read configuration generation (%s)", path);
return -1;
}
old = cond_get_path(path);
prev = cond_get_path(path);
switch (new) {
switch (next) {
case COND_ON:
if (cond_checkpath(path))
return 0;
@@ -159,30 +160,11 @@ int cond_set_path(const char *path, enum cond_state new)
return 0;
}
return new != old;
return next != prev;
}
/* Has condition in configuration and cond is allowed? */
static int svc_has_cond(svc_t *svc)
{
if (!svc->cond[0])
return 0;
switch (svc->type) {
case SVC_TYPE_SERVICE:
case SVC_TYPE_TASK:
case SVC_TYPE_RUN:
case SVC_TYPE_SYSV:
return 1;
default:
break;
}
return 0;
}
static void cond_update(const char *name)
/* Should only be used by cond_set*(), cond_clear(), and usr plugin! */
void cond_update(const char *name)
{
svc_t *svc, *iter = NULL;
@@ -221,7 +203,8 @@ void cond_set_oneshot(const char *name)
if (cond_checkpath(path))
return;
symlink(COND_RECONF, path);
if (symlink(_PATH_RECONF, path) && errno != EEXIST)
_pe("Failed creating onshot cond %s", name);
cond_update(name);
}
@@ -254,13 +237,13 @@ static int reassert(const char *fpath, const struct stat *sb, int tflg, struct F
if (tflg != FTW_F)
return 0;
nm = strstr((char *)fpath, COND_DIR);
nm = strstr((char *)fpath, COND_BASE);
if (!nm) {
_e("Incorrect condtion path %s, cannot reassert", fpath);
return 1;
}
nm += sizeof(COND_DIR);
nm += strlen(COND_BASE);
_d("Reasserting %s => %s", fpath, nm);
cond_set(nm);
@@ -281,8 +264,8 @@ void cond_init(void)
{
char path[MAX_ARG_LEN];
if (makepath(pid_runpath(COND_PATH, path, sizeof(path))) && errno != EEXIST) {
_pe("Failed creating condition base directory '%s'", COND_PATH);
if (mkpath(pid_runpath(_PATH_COND, path, sizeof(path)), 0755) && errno != EEXIST) {
_pe("Failed creating condition base directory '%s'", _PATH_COND);
return;
}
+6 -6
View File
@@ -45,15 +45,15 @@ const char *cond_path(const char *name)
static char path[256];
char tmp[MAX_ARG_LEN];
snprintf(tmp, sizeof(tmp), COND_PATH "/%s", name);
snprintf(tmp, sizeof(tmp), _PATH_COND "%s", name);
return pid_runpath(tmp, path, sizeof(path));
}
unsigned int cond_get_gen(const char *file)
{
unsigned int gen;
char *ptr, path[256];
unsigned int gen;
FILE *fp;
int ret;
@@ -74,14 +74,14 @@ enum cond_state cond_get_path(const char *path)
{
int cgen, rgen;
rgen = cond_get_gen(COND_RECONF);
if (!rgen)
return COND_OFF;
cgen = cond_get_gen(path);
if (!cgen)
return COND_OFF;
rgen = cond_get_gen(_PATH_RECONF);
if (!rgen)
return COND_OFF;
return (cgen == rgen) ? COND_ON : COND_FLUX;
}
+9 -3
View File
@@ -4,9 +4,14 @@
#include <paths.h>
#include <svc.h>
#define COND_DIR "finit/cond"
#define COND_PATH _PATH_VARRUN COND_DIR
#define COND_RECONF COND_PATH "/reconf"
#define COND_BASE "finit/cond"
#define COND_USR "usr/"
#define COND_PID "pid/"
#define _PATH_COND _PATH_VARRUN COND_BASE "/"
#define _PATH_CONDUSR _PATH_COND COND_USR
#define _PATH_CONDPID _PATH_COND COND_PID
#define _PATH_RECONF _PATH_COND "reconf"
typedef enum cond_state {
COND_OFF = 0,
@@ -23,6 +28,7 @@ enum cond_state cond_get (const char *name);
enum cond_state cond_get_agg (const char *names);
int cond_affects (const char *name, const char *names);
void cond_update (const char *name);
int cond_set_path (const char *path, enum cond_state new);
void cond_set (const char *name);
void cond_set_oneshot (const char *name);
+107 -32
View File
@@ -23,6 +23,7 @@
#include "config.h" /* Generated by configure script */
#include <ctype.h>
#include <dirent.h>
#include <string.h>
#include <sys/inotify.h>
@@ -47,8 +48,11 @@
int logfile_size_max = 200000; /* 200 kB */
int logfile_count_max = 5;
struct rlimit initial_rlimit[RLIMIT_NLIMITS];
struct rlimit global_rlimit[RLIMIT_NLIMITS];
char cgroup_current[16]; /* cgroup.NAME sets current cgroup for a set of services */
struct conf_change {
TAILQ_ENTRY(conf_change) link;
char *name;
@@ -78,14 +82,14 @@ static void hide_args(int argc, char *argv[])
}
}
int get_bool(char *ptr, int default_value)
int get_bool(char *arg, int default_value)
{
if (!ptr)
if (!arg)
goto fallback;
if (string_compare(ptr, "true") || string_compare(ptr, "on") || string_compare(ptr, "1"))
if (string_compare(arg, "true") || string_compare(arg, "on") || string_compare(arg, "1"))
return 1;
if (string_compare(ptr, "false") || string_compare(ptr, "off") || string_compare(ptr, "0"))
if (string_compare(arg, "false") || string_compare(arg, "off") || string_compare(arg, "0"))
return 0;
fallback:
return default_value;
@@ -97,19 +101,24 @@ fallback:
*/
static void parse_finit_opts(char *opt)
{
char *ptr;
char *arg;
ptr = strchr(opt, '=');
if (ptr)
*ptr++ = 0;
arg = strchr(opt, '=');
if (arg)
*arg++ = 0;
if (string_compare(opt, "debug")) {
debug = get_bool(ptr, 1);
debug = get_bool(arg, 1);
return;
}
if (string_compare(opt, "status_style")) {
if (string_compare(ptr, "old") || string_compare(ptr, "classic"))
if (!arg) {
_e("status_style option requires an argument, skipping.");
return;
}
if (string_compare(arg, "old") || string_compare(arg, "classic"))
show_progress(PROGRESS_CLASSIC);
else
show_progress(PROGRESS_MODERN);
@@ -117,7 +126,7 @@ static void parse_finit_opts(char *opt)
}
if (string_compare(opt, "show_status")) {
show_progress(get_bool(ptr, 1) ? PROGRESS_DEFAULT : PROGRESS_SILENT);
show_progress(get_bool(arg, 1) ? PROGRESS_DEFAULT : PROGRESS_SILENT);
return;
}
}
@@ -346,7 +355,7 @@ char *lim2str(struct rlimit *rlim)
char tmp[25];
static char buf[42];
memset(buf, 0, sizeof(buf));
buf[0] = 0;
if (RLIM_INFINITY == rlim->rlim_cur)
snprintf(tmp, sizeof(tmp), "unlimited, ");
else
@@ -417,6 +426,29 @@ error:
logit(LOG_WARNING, "rlimit: parse error");
}
/* cgroup NAME ctrl.prop:value,ctrl.prop:value ... */
static void conf_parse_cgroup(char *line)
{
char config[strlen(line) + 1];
char *ptr, *name;
name = strtok(line, " \t");
if (!name)
return;
if (strstr(name, "..") || strchr(name, '/'))
return; /* illegal */
config[0] = 0;
while ((ptr = strtok(NULL, " \t"))) {
if (config[0])
strlcat(config, ",", sizeof(config));
strlcat(config, ptr, sizeof(config));
}
cgroup_add(name, config, 0);
}
static void parse_static(char *line, int is_rcsd)
{
char cmd[CMD_SIZE];
@@ -546,9 +578,21 @@ static void parse_dynamic(char *line, struct rlimit rlimit[], char *file)
return;
}
/* Read contrl group limits */
if (MATCH_CMD(line, "cgroup ", x)) {
conf_parse_cgroup(x);
return;
}
/* Set current cgroup for the following services/run/tasks */
if (MATCH_CMD(line, "cgroup.", x)) {
strlcpy(cgroup_current, x, sizeof(cgroup_current));
return;
}
/* Regular or serial TTYs to run getty */
if (MATCH_CMD(line, "tty ", x)) {
tty_register(strip_line(x), rlimit, file);
service_register(SVC_TYPE_TTY, strip_line(x), rlimit, file);
return;
}
}
@@ -574,9 +618,11 @@ static int parse_conf(char *file, int is_rcsd)
if (!fp)
return 1;
/* Prepare default limits for each service in /etc/finit.d/ */
if (is_rcsd)
/* Prepare default limits and group for each service in /etc/finit.d/ */
if (is_rcsd) {
memcpy(rlimit, global_rlimit, sizeof(rlimit));
cgroup_current[0] = 0;
}
_d("*** Parsing %s", file);
while (!feof(fp)) {
@@ -616,16 +662,13 @@ int conf_reload(void)
daylight, timezone, tzname[0], tzname[1]);
/* Mark and sweep */
cgroup_mark_all();
svc_mark_dynamic();
tty_mark();
/*
* Get current global limits, which may be overridden from both
* finit.conf, for Finit and its services like getty+watchdogd,
* and *.conf in finit.d/, for each service(s) listed there.
* Reset global rlimit to bootstrap values from conf_init().
*/
for (int i = 0; i < RLIMIT_NLIMITS; i++)
getrlimit(i, &global_rlimit[i]);
memcpy(global_rlimit, initial_rlimit, sizeof(global_rlimit));
if (rescue) {
int rc;
@@ -634,7 +677,7 @@ int conf_reload(void)
/* If rescue.conf is missing, fall back to a root shell */
rc = parse_conf(RESCUE_CONF, 0);
if (rc)
tty_register(line, global_rlimit, NULL);
service_register(SVC_TYPE_TTY, line, global_rlimit, NULL);
print(rc, "Entering rescue mode");
goto done;
@@ -674,7 +717,7 @@ int conf_reload(void)
/* Check for dangling symlinks */
if (S_ISLNK(st.st_mode)) {
path = rp = realpath(path, NULL);
rp = realpath(path, NULL);
if (!rp) {
logit(LOG_WARNING, "Skipping %s, dangling symlink: %s", path, strerror(errno));
continue;
@@ -684,7 +727,7 @@ int conf_reload(void)
/* Check that file ends with '.conf' */
len = strlen(path);
if (len < 6 || strcmp(&path[len - 5], ".conf"))
_d("Skipping %s, not a valid .conf ... ", path);
_d("Skipping %s, not a Finit .conf file ... ", path);
else
parse_conf(path, 1);
@@ -694,7 +737,15 @@ int conf_reload(void)
globfree(&gl);
/* Mark any reverse deps as chenaged. */
service_update_rdeps();
/* Set up top-level cgroups */
cgroup_config();
done:
/* Remove all unused top-level cgroups */
cgroup_cleanup();
/* Drop record of all .conf changes */
drop_changes();
@@ -787,20 +838,29 @@ int conf_any_change(void)
int conf_changed(char *file)
{
int rc = 0;
char *rp;
if (!file)
return 0;
if (conf_find(file))
return 1;
rp = realpath(file, NULL);
if (!rp)
return 0;
return 0;
if (conf_find(rp))
rc = 1;
free(rp);
return rc;
}
static void conf_cb(uev_t *w, void *arg, int events)
{
static char ev_buf[8 *(sizeof(struct inotify_event) + NAME_MAX + 1) + 1];
struct inotify_event *ev;
ssize_t sz, off;
ssize_t sz;
size_t off;
sz = read(w->fd, ev_buf, sizeof(ev_buf) - 1);
if (sz <= 0) {
@@ -809,10 +869,16 @@ static void conf_cb(uev_t *w, void *arg, int events)
}
ev_buf[sz] = 0;
for (off = 0; off < sz; off += sizeof(*ev) + ev->len) {
for (off = 0; off < (size_t)sz; off += sizeof(*ev) + ev->len) {
struct iwatch_path *iwp;
if (off + sizeof(*ev) > (size_t)sz)
break;
ev = (struct inotify_event *)&ev_buf[off];
if (off + sizeof(*ev) + ev->len > (size_t)sz)
break;
if (!ev->mask)
continue;
@@ -868,7 +934,7 @@ int conf_monitor(void)
}
/*
* Prepare .conf parser and load all .conf files
* Prepare .conf parser and load /etc/finit.conf for global settings
*/
int conf_init(uev_ctx_t *ctx)
{
@@ -882,8 +948,17 @@ int conf_init(uev_ctx_t *ctx)
* finit.conf, for Finit and its services like getty+watchdogd,
* and *.conf in finit.d/, for each service(s) listed there.
*/
for (int i = 0; i < RLIMIT_NLIMITS; i++)
getrlimit(i, &global_rlimit[i]);
for (int i = 0; i < RLIMIT_NLIMITS; i++) {
if (getrlimit(i, &initial_rlimit[i]))
logit(LOG_WARNING, "rlimit: Failed reading setting %s: %s",
rlim2str(i), strerror(errno));
}
/* Initialize global rlimits, e.g. for built-in services */
memcpy(global_rlimit, initial_rlimit, sizeof(global_rlimit));
/* Read global rlimits and global cgroup setup from /etc/finit.conf */
parse_conf(FINIT_CONF, 0);
/* prepare /etc watcher */
fd = iwatch_init(&iw_conf);
+2
View File
@@ -24,12 +24,14 @@
#ifndef FINIT_CONF_H_
#define FINIT_CONF_H_
#include "cgroup.h"
#include "svc.h"
extern int logfile_size_max;
extern int logfile_count_max;
extern struct rlimit global_rlimit[];
extern char cgroup_current[];
int str2rlim(char *str);
char *rlim2str(int rlim);
+35 -49
View File
@@ -35,6 +35,7 @@
#include <lite/lite.h>
#include "finit.h"
#include "cgroup.h"
#include "conf.h"
#include "helpers.h"
#include "sig.h"
@@ -244,10 +245,6 @@ static void prepare_tty(char *tty, speed_t speed, char *procname, struct rlimit
char name[80];
int fd;
/* Detach from initial controlling TTY and become session leader */
vhangup();
setsid();
fd = open(tty, O_RDWR);
if (fd < 0) {
logit(LOG_ERR, "Failed opening %s: %s", tty, strerror(errno));
@@ -259,6 +256,11 @@ static void prepare_tty(char *tty, speed_t speed, char *procname, struct rlimit
dup2(fd, STDERR_FILENO);
close(fd);
/*
* Become session leader and set controlling TTY
* to enable Ctrl-C and job control in shell.
*/
setsid();
if (ioctl(STDIN_FILENO, TIOCSCTTY, 1) < 0)
logit(LOG_WARNING, "Failed TIOCSCTTY on %s: %s", tty, strerror(errno));
@@ -288,7 +290,6 @@ static void prepare_tty(char *tty, speed_t speed, char *procname, struct rlimit
sigemptyset(&sa.sa_mask);
sa.sa_flags = SA_RESTART;
sa.sa_handler = SIG_IGN;
sigaction(SIGHUP, &sa, NULL);
sigaction(SIGINT, &sa, NULL);
sigaction(SIGQUIT, &sa, NULL);
@@ -315,7 +316,7 @@ static int activate_console(int noclear, int nowait)
return 1;
if (!noclear)
(void)write(STDERR_FILENO, "\e[r\e[H\e[J", 9);
dprint(STDERR_FILENO, "\e[r\e[H\e[J", 9);
/* Disable ECHO, XON/OFF while waiting for <CR> */
if (!tcgetattr(STDIN_FILENO, &orig)) {
@@ -339,16 +340,16 @@ static int activate_console(int noclear, int nowait)
continue;
}
(void)write(STDERR_FILENO, clr, strlen(clr));
(void)write(STDERR_FILENO, msg, strlen(msg));
dprint(STDERR_FILENO, clr, strlen(clr));
dprint(STDERR_FILENO, msg, strlen(msg));
while (read(STDIN_FILENO, &c, 1) == 1 && c != '\r')
continue;
if (fexist(SYNC_STOPPED))
continue;
(void)write(STDERR_FILENO, clr, strlen(clr));
(void)write(STDERR_FILENO, cup, strlen(cup));
dprint(STDERR_FILENO, clr, strlen(clr));
dprint(STDERR_FILENO, cup, strlen(cup));
ret = 1;
break;
}
@@ -381,62 +382,47 @@ static int activate_console(int noclear, int nowait)
*/
pid_t run_getty(char *tty, char *baud, char *term, int noclear, int nowait, struct rlimit rlimit[])
{
pid_t pid;
speed_t speed;
int rc = 1;
pid = fork();
if (!pid) {
speed_t speed;
int rc = 1;
speed = stty_parse_speed(baud);
speed = stty_parse_speed(baud);
prepare_tty(tty, speed, "tty", rlimit);
if (activate_console(noclear, nowait)) {
logit(LOG_INFO, "Starting built-in getty on %s, speed %u", tty, speed);
prepare_tty(tty, speed, "tty", rlimit);
if (activate_console(noclear, nowait))
rc = getty(tty, speed, term, NULL);
_exit(rc);
rc = getty(tty, speed, term, NULL);
}
return pid;
return rc;
}
/*
* Start external getty as defined by user in .conf file
*/
pid_t run_getty2(char *tty, char *cmd, char *args[], int noclear, int nowait, struct rlimit rlimit[])
{
pid_t pid;
int rc = 1;
pid = fork();
if (!pid) {
int rc = 1;
/* Dunno speed, tell stty() to not mess with it */
logit(LOG_INFO, "Starting external getty on %s, speed %u", tty, B0);
prepare_tty(tty, B0, "getty", rlimit);
if (activate_console(noclear, nowait))
rc = execv(cmd, args);
vhangup();
_exit(rc);
/* Dunno speed, tell stty() to not mess with it */
prepare_tty(tty, B0, "getty", rlimit);
if (activate_console(noclear, nowait)) {
logit(LOG_INFO, "Starting external getty on %s", tty);
rc = execv(cmd, args);
}
return pid;
vhangup();
return rc;
}
pid_t run_sh(char *tty, int noclear, int nowait, struct rlimit rlimit[])
{
pid_t pid;
int rc = 1;
pid = fork();
if (!pid) {
int rc = 1;
prepare_tty(tty, B0, "finitsh", rlimit);
if (activate_console(noclear, nowait))
rc = sh(tty);
prepare_tty(tty, B0, "finit-sh", rlimit);
if (activate_console(noclear, nowait))
rc = sh(tty);
_exit(rc);
}
return pid;
return rc;
}
int run_parts(char *dir, char *cmd)
+82 -52
View File
@@ -59,6 +59,7 @@ int prevlevel = -1;
int debug = 0; /* debug mode from kernel cmdline */
int rescue = 0; /* rescue mode from kernel cmdline */
int single = 0; /* single user mode from kernel cmdline */
int bootstrap = 1; /* set while bootrapping (for TTYs) */
char *sdown = NULL;
char *network = NULL;
char *hostname = NULL;
@@ -179,7 +180,8 @@ static void fs_remount_root(int fsckerr)
* XXX: Untested, in the initramfs age we should
* probably use switch_root instead.
*/
rc = mount(SYSROOT, "/", NULL, MS_MOVE, NULL);
if (mount(SYSROOT, "/", NULL, MS_MOVE, NULL))
_pe("Failed %s / MS_MOVE");
}
#endif /* SYSROOT */
@@ -198,7 +200,6 @@ static void fs_mount(void)
plugin_run_hooks(HOOK_MOUNT_POST);
run("swapon -ea");
umask(0022);
}
/*
@@ -206,6 +207,9 @@ static void fs_mount(void)
* for early multi-console, and /sys for the cgroups support. Any
* occurrence of these file systems in /etc/fstab will replace these
* mounts later in fs_mount()
*
* Ignore any mount errors with EBUSY, kernel likely alread mounted
* the filesystem for us automatically, e.g., CONFIG_DEVTMPFS_MOUNT.
*/
static void fs_init(void)
{
@@ -218,8 +222,16 @@ static void fs_init(void)
};
size_t i;
for (i = 0; i < NELEMS(fs); i++)
mount(fs[i].spec, fs[i].file, fs[i].type, 0, NULL);
/* mask writable bit for g and o */
umask(022);
for (i = 0; i < NELEMS(fs); i++) {
int rc;
rc = mount(fs[i].spec, fs[i].file, fs[i].type, 0, NULL);
if (rc && errno != EBUSY)
_pe("Failed mounting %s on %s", fs[i].spec, fs[i].file);
}
}
/*
@@ -276,20 +288,8 @@ static void emergency_shell(void)
* finit.conf, or *.conf in finit.d/, run to completion before we
* finalize the bootstrap process by calling this function.
*/
static void finalize(void)
static void finalize(void *unused)
{
/*
* Run startup scripts in the runparts directory, if any.
*/
if (runparts && fisdir(runparts) && !rescue)
run_parts(runparts, NULL);
/*
* Start all tasks/services in the configured runlevel
*/
_d("Change to default runlevel, start all services ...");
service_runlevel(cfglevel);
/* Clean up bootstrap-only tasks/services that never started */
_d("Clean up all bootstrap-only tasks/services ...");
svc_prune_bootstrap();
@@ -311,9 +311,9 @@ static void finalize(void)
/* Disable progress output at normal runtime */
enable_progress(0);
/* Delayed start of TTYs at bootstrap */
_d("Launching all getty services ...");
tty_runlevel();
/* System bootrapped, launch TTYs et al */
bootstrap = 0;
service_step_all(SVC_TYPE_RESPAWN);
}
/*
@@ -331,12 +331,17 @@ static void crank_worker(void *unused)
/*
* Wait for system bootstrap to complete, all SVC_TYPE_RUNTASK must be
* allowed to complete their work in [S], or timeout, before we call
* finalize(), should not take more than 120 sec.
* allowed to complete their work in [S], or timeout, before we switch
* to the configured runlevel and call finalize(), should not take more
* than 120 sec.
*/
static void final_worker(void *work)
static void bootstrap_worker(void *work)
{
static int cnt = 120;
static struct wq final = {
.cb = finalize,
.delay = 10
};
_d("Step all services ...");
service_step_all(SVC_TYPE_ANY);
@@ -352,12 +357,36 @@ static void final_worker(void *work)
else
_d("Timeout, resuming bootstrap.");
finalize();
_d("Starting runlevel change finalize ...");
schedule_work(&final);
/*
* Run startup scripts in the runparts directory, if any.
*/
if (runparts && fisdir(runparts) && !rescue)
run_parts(runparts, NULL);
/*
* Start all tasks/services in the configured runlevel
*/
_d("Change to default runlevel(%d), starting all services ...", cfglevel);
service_runlevel(cfglevel);
}
static int version(int rc)
{
puts(PACKAGE_STRING);
printf("Bug report address: %-40s\n", PACKAGE_BUGREPORT);
#ifdef PACKAGE_URL
printf("Project homepage: %s\n", PACKAGE_URL);
#endif
return rc;
}
static int usage(int rc)
{
printf("Usage: telinit [OPTIONS] [q | Q | 0-9]\n\n"
printf("Usage: %s [OPTIONS] [q | Q | 0-9]\n\n"
"Options:\n"
// " -a Ignored, compat SysV init\n"
// " -b Ignored, compat SysV init\n"
@@ -375,12 +404,7 @@ static int usage(int rc)
" q, Q Reload /etc/finit.conf and/or any *.conf in /etc/finit.d/\n"
" if modified, same as initctl reload or SIGHUP to PID 1\n"
" 1, s, S Enter system rescue mode, runlevel 1\n"
"\n");
printf("Bug report address: %-40s\n", PACKAGE_BUGREPORT);
#ifdef PACKAGE_URL
printf("Project homepage: %s\n", PACKAGE_URL);
#endif
"\n", prognm);
return rc;
}
@@ -393,6 +417,7 @@ static int telinit(int argc, char *argv[])
{
int c;
progname(argv[0]);
while ((c = getopt(argc, argv, "abe:h?st:vVz:")) != EOF) {
switch(c) {
case 'a': case 'b': case 'e': case 's': case 'z':
@@ -402,7 +427,7 @@ static int telinit(int argc, char *argv[])
break;
case 'v': case 'V':
return puts("v" VERSION) == EOF;
return version(0);
case 'h':
case '?':
@@ -414,13 +439,13 @@ static int telinit(int argc, char *argv[])
int req = (int)argv[optind][0];
if (isdigit(req))
return systemf("initctl runlevel %c", req);
return systemf("initctl -b runlevel %c", req);
if (req == 'q' || req == 'Q')
return systemf("initctl reload");
return systemf("initctl -b reload");
if (req == 's' || req == 'S')
return systemf("initctl runlevel %c", req);
return systemf("initctl -b runlevel %c", req);
}
/* XXX: add non-pid1 process monitor here
@@ -435,11 +460,12 @@ static int telinit(int argc, char *argv[])
int main(int argc, char *argv[])
{
struct wq crank = {
.cb = crank_worker
.cb = crank_worker,
.delay = 10
};
struct wq final = {
.cb = final_worker,
.delay = 1000
struct wq bootstrap = {
.cb = bootstrap_worker,
.delay = 100
};
uev_ctx_t loop;
@@ -470,17 +496,13 @@ int main(int argc, char *argv[])
ctx = &loop;
/*
* Set PATH, SHELL, PWD, and umask early to something sane
* Set PATH, SHELL, and PWD early to something sane
*/
setenv("PATH", _PATH_STDPATH, 1);
setenv("SHELL", _PATH_BSHELL, 1);
chdir("/");
umask(0);
/* Set up canvas */
if (!rescue && !debug)
screen_init();
if (chdir("/"))
_pe("Failed cd /");
/* Allow progress, if enabled */
enable_progress(1);
@@ -490,8 +512,10 @@ int main(int argc, char *argv[])
*/
emergency_shell();
/* Load plugins early, the first hook is in banner(), so we
* need plugins loaded before calling it. */
/*
* Load plugins early, the first hook is in banner(), so we
* need plugins loaded before calling it.
*/
plugin_init(&loop);
/*
@@ -507,8 +531,7 @@ int main(int argc, char *argv[])
/*
* Initialize default control groups, if available
*/
cgroup_init();
cgroup_init(&loop);
/* Check and mount filesystems. */
fs_mount();
@@ -526,6 +549,14 @@ int main(int argc, char *argv[])
*/
conf_init(&loop);
/*
* Start built-in watchdogd as soon as possible, if enabled
*/
if (which(FINIT_LIBPATH_ "/watchdogd")) {
service_register(SVC_TYPE_SERVICE, "[123456789] name:watchdog :finit " FINIT_LIBPATH_ "/watchdogd -- Finit watchdog daemon", global_rlimit, NULL);
wdog = svc_find_by_nameid("watchdog", "finit");
}
/* Base FS up, enable standard SysV init signals */
sig_setup(&loop);
@@ -540,13 +571,12 @@ int main(int argc, char *argv[])
_d("Starting initctl API responder ...");
api_init(&loop);
umask(022);
_d("Starting the big state machine ...");
schedule_work(&crank);
_d("Starting bootstrap finalize timer ...");
schedule_work(&final);
schedule_work(&bootstrap);
/*
* Enter main loop to monitor /dev/initctl and services
+10 -4
View File
@@ -30,6 +30,7 @@
#include <paths.h>
#include <stdio.h>
#include <stdlib.h>
#include <sysexits.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
@@ -38,11 +39,15 @@
/* just in case */
#ifndef _PATH_STDPATH
#define _PATH_STDPATH "/usr/bin:/bin:/usr/sbin:/sbin"
#define _PATH_STDPATH "/usr/bin:/bin:/usr/sbin:/sbin"
#endif
#ifndef _PATH_VARRUN
#define _PATH_VARRUN "/var/run/"
#define _PATH_VARRUN "/var/run/"
#endif
#ifndef FINIT_CGPATH
#define FINIT_CGPATH "/sys/fs/cgroup"
#endif
#define LOGIT_PATH FINIT_LIBPATH_ "/logit"
@@ -67,10 +72,10 @@
/* Finit extensions over std SysV */
#define INIT_CMD_DEBUG 8 /* Toggle Finit debug */
#define INIT_CMD_RELOAD 9 /* Reload *.conf in /etc/finit.d/ */
#define INIT_CMD_START_SVC 10
#define INIT_CMD_START_SVC 10 /* START service */
#define INIT_CMD_STOP_SVC 11
#define INIT_CMD_RELOAD_SVC 12 /* SIGHUP service */
#define INIT_CMD_RESTART_SVC 13 /* STOP + START service */
#define INIT_CMD_RESTART_SVC 13 /* START service, clearing blocks */
#define INIT_CMD_UNUSED2 14 /* Unused, was INIT_CMD_QUERY_INETD */
#define INIT_CMD_UNUSED1 15 /* Unused, was INIT_CMD_EMIT */
#define INIT_CMD_GET_RUNLEVEL 16
@@ -101,6 +106,7 @@ extern int prevlevel;
extern int debug;
extern int rescue;
extern int single;
extern int bootstrap;
extern char *rcsd;
extern char *sdown;
extern char *network;
+15 -16
View File
@@ -41,9 +41,6 @@
#define _PATH_LOGIN "/bin/login"
#endif
#define print(s) (void)write(STDOUT_FILENO, s, strlen(s))
/*
* Read one character from stdin.
*/
@@ -54,7 +51,7 @@ static int readch(char *tty)
st = read(STDIN_FILENO, &ch1, 1);
if (st == 0) {
print("\n");
dprint(STDOUT_FILENO, "\n", 0);
_exit(0);
}
@@ -74,31 +71,32 @@ static void do_parse(char *line, struct utsname *uts, char *tty)
s0 = line;
for (s = line; *s != 0; s++) {
if (*s == '\\') {
(void)write(1, s0, s - s0);
if ((s - s0) > 0)
dprint(STDOUT_FILENO, s0, s - s0);
s0 = s + 2;
switch (*++s) {
case 'l':
print(tty);
dprint(STDOUT_FILENO, tty, 0);
break;
case 'm':
print(uts->machine);
dprint(STDOUT_FILENO, uts->machine, 0);
break;
case 'n':
print(uts->nodename);
dprint(STDOUT_FILENO, uts->nodename, 0);
break;
#ifdef _GNU_SOURCE
case 'o':
print(uts->domainname);
dprint(STDOUT_FILENO, uts->domainname, 0);
break;
#endif
case 'r':
print(uts->release);
dprint(STDOUT_FILENO, uts->release, 0);
break;
case 's':
print(uts->sysname);
dprint(STDOUT_FILENO, uts->sysname, 0);
break;
case 'v':
print(uts->version);
dprint(STDOUT_FILENO, uts->version, 0);
break;
case 0:
goto leave;
@@ -109,7 +107,8 @@ static void do_parse(char *line, struct utsname *uts, char *tty)
}
leave:
(void)write(1, s0, s - s0);
if ((s - s0) > 0)
dprint(STDOUT_FILENO, s0, s - s0);
}
/*
@@ -159,7 +158,7 @@ static void do_getty(char *tty, char *name, size_t len)
while ((ch = readch(tty)) != '\n') {
if (ch == CTRL('U')) {
while (np > name) {
(void)write(1, "\b \b", 3);
dprint(STDOUT_FILENO, "\b \b", 3);
np--;
}
continue;
@@ -186,7 +185,7 @@ static int do_login(char *name)
{
struct stat st;
cgroup_user(name);
cgroup_user(name, 0);
execl(_PATH_LOGIN, _PATH_LOGIN, name, NULL);
/*
@@ -215,7 +214,7 @@ int getty(char *tty, speed_t speed, char *term, char *user)
/* Set up TTY, re-enabling ISIG et al. */
stty(STDIN_FILENO, speed);
(void)write(STDERR_FILENO, cln, strlen(cln));
dprint(STDERR_FILENO, cln, strlen(cln));
/* The getty process is responsible for the UTMP login record */
utmp_set_login(tty, NULL);
+88 -16
View File
@@ -103,6 +103,9 @@ static void add_console(char *cons)
if (ptr)
*ptr = 0;
if (!strncmp(cons, "/dev/", 5))
cons += 5;
snprintf(path, sizeof(path), "/dev/%s", cons);
/* check for and skip duplicates */
@@ -121,7 +124,7 @@ static void add_console(char *cons)
num_cons++;
}
void console_init(void)
static void find_active_consoles(void)
{
char *cons, *ptr, *tok;
char buf[512];
@@ -131,7 +134,7 @@ void console_init(void)
if (!fp) {
fallback:
_d("Using fallback /dev/console");
add_console("/dev/console");
add_console("console");
return;
}
@@ -148,6 +151,12 @@ void console_init(void)
}
}
void console_init(void)
{
find_active_consoles();
ttinit();
}
ssize_t cprintf(const char *fmt, ...)
{
const size_t len = strlen(fmt) * 2;
@@ -161,7 +170,7 @@ ssize_t cprintf(const char *fmt, ...)
va_end(ap);
for (i = 0; i < num_cons; i++)
(void)write(fds[i], buf, size);
dprint(fds[i], buf, size);
return size;
}
@@ -246,20 +255,20 @@ static char *pad(char *buf, size_t len, char *ch, size_t width)
void print_banner(const char *heading)
{
char buf[4 * SCREEN_WIDTH];
char buf[4 * ttcols];
if (progress_style == PROGRESS_SILENT)
return;
memset(buf, 0, sizeof(buf));
buf[0] = 0;
strlcat(buf, "\r\e[2K", sizeof(buf));
if (progress_style == PROGRESS_CLASSIC) {
strlcat(buf, "\e[1m", sizeof(buf));
strlcat(buf, heading, sizeof(buf));
pad(buf, sizeof(buf), "=", SCREEN_WIDTH + 10);
pad(buf, sizeof(buf), "=", ttcols + 10);
} else {
size_t wmax = 80 <= SCREEN_WIDTH ? 80 : SCREEN_WIDTH;
size_t wmax = 80 <= ttcols ? 80 : ttcols;
/* • • • Foo System ═══════════════════════════════════════════════ */
/* ⬤ ⬤ ⬤ Foo System ═══════════════════════════════════════════════ */
@@ -322,7 +331,7 @@ static char *status(int rc)
void printv(const char *fmt, va_list ap)
{
char buf[SCREEN_WIDTH];
char buf[ttcols];
size_t len;
if (!fmt || progress_style == PROGRESS_SILENT)
@@ -330,7 +339,7 @@ void printv(const char *fmt, va_list ap)
delline();
memset(buf, 0, sizeof(buf));
buf[0] = 0;
len = print_timestamp(buf, sizeof(buf));
vsnprintf(&buf[len], sizeof(buf) - len, fmt, ap);
@@ -404,6 +413,64 @@ int getgroup(char *group)
#endif
}
/* get current user */
int getcuser(char *buf, size_t len)
{
char *ptr = "root";
#ifndef ENABLE_STATIC
struct passwd *pw = getpwuid(getuid());
if (pw)
ptr = pw->pw_name;
#endif
if (strlcpy(buf, ptr, len) > len)
return -1;
return 0;
}
/* get current group */
int getcgroup(char *buf, size_t len)
{
char *ptr = "root";
#ifndef ENABLE_STATIC
struct group *gr = getgrgid(getgid());
if (gr)
ptr = gr->gr_name;
#endif
if (strlcpy(buf, ptr, len) > len)
return -1;
return 0;
}
int mksubsys(const char *dir, mode_t mode, char *user, char *group)
{
mode_t omask;
int uid, gid;
int rc = 0;
omask = umask(0);
uid = getuser(user, NULL);
if (uid >= 0) {
gid = getgroup(group);
if (gid < 0)
gid = 0;
rc = makedir(dir, mode);
if (chown(dir, uid, gid))
_pe("Failed chown(%s, %d, %d)", dir, uid, gid);
}
umask(omask);
return rc;
}
void set_hostname(char **hostname)
{
FILE *fp;
@@ -426,14 +493,16 @@ void set_hostname(char **hostname)
return;
}
fgets(*hostname, st.st_size, fp);
chomp(*hostname);
if (fgets(*hostname, st.st_size, fp))
chomp(*hostname);
fclose(fp);
}
done:
if (*hostname)
sethostname(*hostname, strlen(*hostname));
if (*hostname) {
if (sethostname(*hostname, strlen(*hostname)))
_pe("Failed sethostnaem(%s)", *hostname);
}
}
/*
@@ -471,6 +540,7 @@ void networking(int updown)
run("ifdown -a");
_exit(0);
}
cgroup_service("network", pid, NULL);
print(pid > 0 ? 0 : 1, "%s networking", updown ? "Starting" : "Stopping");
}
@@ -557,10 +627,12 @@ int ismnt(char *file, char *dir, char *mode)
while ((mnt = getmntent(fp))) {
if (!strcmp(mnt->mnt_dir, dir)) {
if (mode && hasopt(mnt->mnt_opts, mode))
found = 1;
else
if (mode) {
if (hasopt(mnt->mnt_opts, mode))
found = 1;
} else
found = 1;
break;
}
}
+26 -1
View File
@@ -26,6 +26,7 @@
#define FINIT_HELPERS_H_
#include <mntent.h>
#include <sched.h> /* sched_yield() */
#include <stdarg.h>
#include <sys/resource.h>
#include <sys/types.h>
@@ -70,7 +71,7 @@ void show_progress (pstyle_t style);
int getty (char *tty, speed_t speed, char *term, char *user);
int sh (char *tty);
int stty (int fd, speed_t speed);
void stty (int fd, speed_t speed);
speed_t stty_parse_speed(char *baud);
void print_banner (const char *heading);
@@ -81,6 +82,12 @@ int print_result (int fail);
int getuser (char *username, char **home);
int getgroup (char *group);
int getcuser (char *buf, size_t len);
int getcgroup (char *buf, size_t len);
int mksubsys (const char *dir, mode_t mode, char *user, char *group);
void set_hostname (char **hostname);
void networking (int updown);
@@ -103,6 +110,24 @@ static inline int create(char *path, mode_t mode, uid_t uid, gid_t gid)
return 0;
}
static inline int dprint(int fd, const char *s, size_t len)
{
size_t loop = 3;
int rc = -1;
if (!len)
len = strlen(s);
while (loop--) {
rc = write(fd, s, len);
if (rc == -1 && errno == EINTR)
continue;
break;
}
return rc;
}
int ismnt (char *file, char *dir, char *mode);
int fismnt (char *dir);
+458 -257
View File
File diff suppressed because it is too large Load Diff
+46
View File
@@ -0,0 +1,46 @@
/* New client tool, replaces old /dev/initctl API and telinit tool
*
* Copyright (c) 2015-2021 Joachim Wiberg <troglobit@gmail.com>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#ifndef FINIT_INITCTL_H_
#define FINIT_INITCTL_H_
#include "finit.h"
#include "util.h"
extern int icreate; /* initctl -c */
extern int iforce; /* initctl -f */
extern int ionce; /* initctl -1 */
extern int heading; /* initctl -t */
extern int verbose; /* initctl -v */
extern int plain; /* initctl -p */
extern void print_header(const char *fmt, ...);
#endif /* FINIT_INITCTL_H_ */
/**
* Local Variables:
* indent-tabs-mode: t
* c-file-style: "linux"
* End:
*/
+4 -3
View File
@@ -81,10 +81,10 @@ int iwatch_add(struct iwatch *iw, char *file, uint32_t mask)
return -1;
if (!fexist(file)) {
_d("No such file or directory, skipping %s", file);
_d("skipping %s: no such file or directory", file);
return 0;
}
_d("Adding new watcher for path %s", file);
_d("adding new watcher for path %s", file);
path = strdup(file);
if (!path) {
@@ -94,7 +94,8 @@ int iwatch_add(struct iwatch *iw, char *file, uint32_t mask)
wd = inotify_add_watch(iw->fd, path, IWATCH_MASK | mask);
if (wd < 0) {
_pe("Failed adding watcher for %s", path);
if (errno != EEXIST)
_pe("Failed adding watcher for %s", path);
free(path);
return -1;
}
+6 -9
View File
@@ -22,7 +22,6 @@
*/
#include "config.h"
#include <sched.h> /* sched_yield() */
#include <stdio.h>
#include <stdarg.h>
#include <lite/lite.h>
@@ -50,15 +49,13 @@ void log_exit(void)
* Unless in debug mode at shutdown, Reinitialize screen,
* terminal may have been resized at runtime
*/
if (debug)
screen_exit();
else
screen_init();
if (!debug)
ttinit();
enable_progress(1);
}
void log_open(void)
static void log_open(void)
{
int opts = LOG_PID;
@@ -79,10 +76,9 @@ void log_debug(void)
if (debug) {
loglevel = LOG_DEBUG;
screen_exit();
} else {
loglevel = LOG_NOTICE;
screen_init();
ttinit();
}
log_open();
@@ -103,11 +99,12 @@ void logit(int prio, const char *fmt, ...)
if (up || fexist("/dev/log")) {
if (!up)
log_open();
vsyslog(prio, fmt, ap);
goto done;
}
if (!debug && prio > loglevel)
if (prio > loglevel)
goto done;
fp = fopen("/dev/kmsg", "w");
+2 -65
View File
@@ -30,75 +30,12 @@
#include <syslog.h>
#include <unistd.h>
#include <sys/stat.h>
#include <lite/lite.h>
static const char version_info[] = PACKAGE_NAME " v" PACKAGE_VERSION;
extern int logrotate(char *file, int num, off_t sz);
static int create(char *path, mode_t mode, uid_t uid, gid_t gid)
{
return mknod(path, S_IFREG | mode, 0) || chown(path, uid, gid);
}
/*
* This function triggers a log rotates of @file when size >= @sz bytes
* At most @num old versions are kept and by default it starts gzipping
* .2 and older log files. If gzip is not available in $PATH then @num
* files are kept uncompressed.
*/
static int logrotate(char *file, int num, off_t sz)
{
int cnt;
struct stat st;
if (stat(file, &st))
return 1;
if (sz > 0 && S_ISREG(st.st_mode) && st.st_size > sz) {
if (num > 0) {
size_t len = strlen(file) + 10 + 1;
char ofile[len];
char nfile[len];
/* First age zipped log files */
for (cnt = num; cnt > 2; cnt--) {
snprintf(ofile, len, "%s.%d.gz", file, cnt - 1);
snprintf(nfile, len, "%s.%d.gz", file, cnt);
/* May fail because ofile doesn't exist yet, ignore. */
(void)rename(ofile, nfile);
}
for (cnt = num; cnt > 0; cnt--) {
snprintf(ofile, len, "%s.%d", file, cnt - 1);
snprintf(nfile, len, "%s.%d", file, cnt);
/* May fail because ofile doesn't exist yet, ignore. */
(void)rename(ofile, nfile);
if (cnt == 2 && !access(nfile, F_OK)) {
size_t len = 5 + strlen(nfile) + 1;
char cmd[len];
snprintf(cmd, len, "gzip %s", nfile);
system(cmd);
remove(nfile);
}
}
if (rename(file, nfile))
(void)truncate(file, 0);
else
create(file, st.st_mode, st.st_uid, st.st_gid);
} else {
if (truncate(file, 0))
syslog(LOG_ERR | LOG_PERROR, "Failed truncating %s during logrotate: %s", file, strerror(errno));
}
}
return 0;
}
static int checksz(FILE *fp, off_t sz)
{
struct stat st;
+102
View File
@@ -0,0 +1,102 @@
/*
* Copyright (c) 2018-2021 Joachim Wiberg <troglobit@gmail.com>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include <lite/lite.h>
#include <stdio.h>
#include <syslog.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
static int recreate(char *path, mode_t mode, uid_t uid, gid_t gid)
{
if (mknod(path, S_IFREG | mode, 0) || chown(path, uid, gid)) {
syslog(LOG_ERR, "Failed recreating %s: %s", path, strerror(errno));
return -1;
}
return 0;
}
/*
* This function triggers a log rotates of @file when size >= @sz bytes
* At most @num old versions are kept and by default it starts gzipping
* .2 and older log files. If gzip is not available in $PATH then @num
* files are kept uncompressed.
*/
int logrotate(char *file, int num, off_t sz)
{
int cnt;
struct stat st;
if (stat(file, &st))
return 1;
if (sz > 0 && S_ISREG(st.st_mode) && st.st_size > sz) {
if (num > 0) {
size_t len = strlen(file) + 10 + 1;
char ofile[len];
char nfile[len];
/* First age zipped log files */
for (cnt = num; cnt > 2; cnt--) {
snprintf(ofile, len, "%s.%d.gz", file, cnt - 1);
snprintf(nfile, len, "%s.%d.gz", file, cnt);
/* May fail because ofile doesn't exist yet, ignore. */
if (rename(ofile, nfile) && errno != ENOENT)
syslog(LOG_ERR, "Failed logrotate %s: %s",
ofile, strerror(errno));
}
for (cnt = num; cnt > 0; cnt--) {
snprintf(ofile, len, "%s.%d", file, cnt - 1);
snprintf(nfile, len, "%s.%d", file, cnt);
/* May fail because ofile doesn't exist yet, ignore. */
if (rename(ofile, nfile) && errno != ENOENT) {
syslog(LOG_ERR, "Failed logrotate %s: %s",
ofile, strerror(errno));
continue;
}
if (cnt == 2 && fexist(nfile)) {
if (systemf("gzip %s 2>/dev/null", nfile))
continue; /* no gzip, probably */
(void)remove(nfile);
}
}
if (rename(file, nfile))
goto fallback;
recreate(file, st.st_mode, st.st_uid, st.st_gid);
} else {
fallback:
if (truncate(file, 0))
syslog(LOG_ERR, "Failed truncating %s during logrotate: %s",
file, strerror(errno));
}
}
return 0;
}
+10 -12
View File
@@ -95,18 +95,15 @@ char *pid_get_name(pid_t pid, char *name, size_t len)
char *pid_file(svc_t *svc)
{
static char path[256];
char fn[MAX_ARG_LEN];
if (svc->pidfile[0]) {
if (svc->pidfile[0] == '!')
return &svc->pidfile[1];
return svc->pidfile;
}
snprintf(fn, sizeof(fn), "%s%s.pid", _PATH_VARRUN, basename(svc->cmd));
errno = ENOENT;
return pid_runpath(fn, path, sizeof(path));
return NULL;
}
pid_t pid_file_read(const char *fn)
@@ -143,12 +140,13 @@ int pid_file_create(svc_t *svc)
return fclose(fp);
}
static int pid_realpath(svc_t *svc, char *file)
int pid_file_set(svc_t *svc, char *file, int not)
{
int not = 0;
if (!file)
if (!file) {
file = pid_file(svc);
if (!file)
return -1;
}
if (file[0] == '!') {
not = 1;
@@ -202,7 +200,7 @@ int pid_file_parse(svc_t *svc, char *arg)
arg += 4;
if ((arg[0] == '!' && arg[1] == '/') || arg[0] == '/')
return pid_realpath(svc, arg);
return pid_file_set(svc, arg, 0);
if (arg[0] == '!') {
arg++;
@@ -213,12 +211,12 @@ int pid_file_parse(svc_t *svc, char *arg)
if (len > 4 && strcmp(&path[len - 4], ".pid"))
strlcat(path, ".pid", sizeof(path));
return pid_realpath(svc, path);
return pid_file_set(svc, path, 0);
}
/* 'pid' arg, no argument following */
if (!strcmp(arg, "pid"))
return pid_realpath(svc, NULL);
return pid_file_set(svc, NULL, 0);
return 1;
}
+1
View File
@@ -32,6 +32,7 @@ int pid_alive (pid_t pid);
char *pid_get_name (pid_t pid, char *name, size_t len);
char *pid_file (svc_t *svc);
int pid_file_set (svc_t *svc, char *file, int not);
pid_t pid_file_read (const char *fn);
int pid_file_create (svc_t *svc);
int pid_file_parse (svc_t *svc, char *arg);
+1 -1
View File
@@ -196,7 +196,7 @@ void plugin_run_hook(hook_point_t no, void *arg)
PLUGIN_ITERATOR(p, tmp) {
if (p->hook[no].cb) {
_d("Calling %s hook n:o %d (arg: %p) ...", basename(p->name), no, arg);
_d("Calling %s hook n:o %d (arg: %p) ...", basename(p->name), no, arg ?: "NIL");
p->hook[no].cb(arg ? arg : p->hook[no].arg);
}
}
+21 -3
View File
@@ -1,4 +1,12 @@
# sample.conf: template run/task/service stanza for finit
# sample.conf: template cgroup/run/task/service stanza for finit
#
# The top-level cgroups can be defined anywhere, but share the same
# namespace. It is up to the user to ensure groups are defined only
# once, otherwise the last read .conf wins. See below for assigning
# run/task/services to cgroups. The below example creates the cgroup
# NAME with the following cpu and memory settings:
#
# cgroup NAME cpu.weight:1000 mem.max:65
#
# The one-shot commands 'run' and 'task' are called only once per
# runlevel. Finit does not restart them when they exit.
@@ -25,6 +33,16 @@
# | | `--------------------------------------------------------------- Optional conditions
# | `---------------------------------------------------------------------- Optional Runlevels
# `------------------------------------------------------------------------------ Monitored application
#
# Each stanza can also hold a 'cgroup' argument, or be prefixed with
# cgroup.NAME to place all following stanzas in the same group. In
# the following example, foo and bar share the cgroup foo but baz
# runs in its own cgroup baz:
#
# cgroup.foo
# service cgroup:cpu.weight:250,mem.max:655350 foo args -- foo desc
# service cgroup:cpu.weight:150,mem.max:655350 bar args -- bar desc
# service cgroup.baz:cpu.weight:300 baz args -- baz desc
# Debian GNU/Linux: start SSH daemon as soon as basic networking comes up
#service [2345] <net/lo/up> env:-/etc/default/ssh /usr/sbin/sshd -D $SSHD_OPTS -- OpenSSH daemon
@@ -33,11 +51,11 @@
#task [S] env:/etc/conf.d/loadkmap zcat $KEYMAP | loadkmap -- Loading keymap
# Alpine Linux: start SSH daemon with $DROPBEAR_OPTS from /etc/conf.d
#service [2345] env:-/etc/conf.d/dropbear dropbear -R -F $DROPBEAR_OPTS -- Dropbear SSH daemon
#service [2345] cgroup.user env:-/etc/conf.d/dropbear dropbear -R -F $DROPBEAR_OPTS -- Dropbear SSH daemon
# Handle PWR button to shutdown/reboot -- useful in Qemu (virt-manager)
# Depends on syslogd having started. Redirect any output to log.
#service [2345] <pid/syslogd> log acpid -f -- ACPI daemon
#service [2345] <pid/syslogd> cgroup:mem.max:32000,cpu.max:1000 log acpid -f -- ACPI daemon
# Start rsyslogd as soon as possible, should always run
# Provides pid/syslogd condition
+87 -20
View File
@@ -30,10 +30,7 @@
#include <stdlib.h>
#include <lite/lite.h>
#include "util.h"
extern int icreate; /* initctl -c */
extern int iforce; /* initctl -f */
#include "initctl.h"
static int calc_width(char *arr[], size_t len)
@@ -53,27 +50,66 @@ static int calc_width(char *arr[], size_t len)
static void do_list(const char *path)
{
char buf[screen_cols];
static int once = 0;
int width, num, prev;
glob_t gl;
size_t i;
chdir(path);
if (chdir(path)) {
char *dir, *ptr;
if (!fexist(path))
return;
dir = strdupa(path);
if (!dir)
return;
ptr = strrchr(dir, '/');
if (ptr)
*ptr++ = 0;
else
ptr = dir;
if (heading)
print_header("%s%s ", once ? "\n" : "", dir);
puts(ptr);
puts("");
return;
}
if (glob("*.conf", 0, NULL, &gl))
return;
if (gl.gl_pathc <= 0)
goto done;
snprintf(buf, sizeof(buf), "%s ", path);
printheader(NULL, buf, 0);
if (plain) {
if (heading)
print_header("%s%s ", once ? "\n" : "", path);
once++;
for (i = 0; i < gl.gl_pathc; i++) {
if (!heading) {
char buf[512];
paste(buf, sizeof(buf), path, gl.gl_pathv[i]);
puts(buf);
} else
puts(gl.gl_pathv[i]);
}
goto done;
}
if (heading)
print_header("%s ", path);
width = calc_width(gl.gl_pathv, gl.gl_pathc);
if (width <= 0)
goto done;
num = (screen_cols - 2) / width;
if ((num - 1) * 2 + num * width > screen_cols)
num = (ttcols - 2) / width;
if ((num - 1) * 2 + num * width > ttcols)
num--;
prev = 0;
@@ -118,15 +154,19 @@ int serv_list(char *arg)
if (fisdir(FINIT_RCSD))
do_list(FINIT_RCSD);
if (fexist(FINIT_CONF))
do_list(FINIT_CONF);
return 0;
}
/*
* Return path to configuration file for 'name', relative to FINIT_RCSD.
* This may be any of the following, provided sysconfdir is /etc:
* Return path to configuration file for 'name'. This may be any of the
* following, provided sysconfdir is /etc:
*
* - /etc/finit.d/$name.conf
* - /etc/finit.d/available/$name.conf
* - /etc/finit.d/$name.conf
* - /etc/finit.conf
*
* The system *may* have a /etc/finit.d/available/ directory, or it may
* just use a plain /etc/finit.d/ -- we do not set policy.
@@ -138,6 +178,11 @@ static char *conf(char *path, size_t len, char *name, int creat)
{
char corr[40];
if (!name || !name[0] || !strcmp(name, "finit") || !strcmp(name, "finit.conf")) {
strlcpy(path, FINIT_CONF, len);
return path;
}
if (!strstr(name, ".conf")) {
snprintf(corr, sizeof(corr), "%s.conf", name);
name = corr;
@@ -155,6 +200,10 @@ static char *conf(char *path, size_t len, char *name, int creat)
} else
strlcat(path, name, len);
/* fall back to static service unless edit/create */
if (!creat && !fexist(path))
paste(path, len, FINIT_RCSD, name);
return path;
}
@@ -208,7 +257,8 @@ int do_disable(char *arg, int check)
if (chdir(FINIT_RCSD))
err(1, "failed cd %s", FINIT_RCSD);
chdir("enabled"); /* System *may* have enabled/ dir. */
if (chdir("enabled")) /* System *may* have enabled/ dir. */
dbg("Failed changing to %s/enabled/: %s", FINIT_RCSD, strerror(errno));
if (check && stat(arg, &st))
errx(1, "%s not (an) enabled (service).", arg);
@@ -250,6 +300,20 @@ int serv_touch(char *arg)
return 0;
}
int serv_show(char *arg)
{
char path[256];
char *fn;
fn = conf(path, sizeof(path), arg, 0);
if (!fexist(fn)) {
warnx("Cannot find %s", arg);
return 1;
}
return systemf("cat %s", fn);
}
/*
* Try to open an editor for the given file, if creat is given we
* create a new file based on /lib/finit/sample.conf
@@ -279,7 +343,7 @@ static int do_edit(char *arg, int creat)
if (!fexist(fn)) {
if (!creat) {
warnx("Cannot find %s, use -c flag, create command, or select one of:", arg);
return serv_list("available");
return serv_list(NULL);
}
#ifdef SAMPLE_CONF
@@ -301,8 +365,8 @@ static int do_edit(char *arg, int creat)
int serv_edit(char *arg)
{
if (!arg || !arg[0]) {
warnx("missing argument to edit, may be one of:");
return serv_list("available");
if (!yorn("Do you want to edit %s (y/N)? ", FINIT_CONF))
return 0;
}
return do_edit(arg, icreate);
@@ -346,8 +410,10 @@ int serv_delete(char *arg)
char buf[256];
char *fn;
if (!arg || !arg[0])
errx(1, "missing argument to delete");
if (!arg || !arg[0]) {
warnx("missing argument to delete, may be one of:");
return serv_list("available");
}
fn = conf(buf, sizeof(buf), arg, 0);
if (!fn)
@@ -358,7 +424,8 @@ int serv_delete(char *arg)
if (iforce || yorn("Remove file and symlink(s) to %s (y/N)? ", fn)) {
do_disable(arg, 0);
remove(fn);
if (remove(fn))
err(1, "Failed removing %s", fn);
}
return 0;
+1
View File
@@ -28,6 +28,7 @@ int serv_list (char *arg);
int serv_enable (char *arg);
int serv_disable (char *arg);
int serv_touch (char *arg);
int serv_show (char *arg);
int serv_edit (char *arg);
int serv_creat (char *arg);
int serv_delete (char *arg);
+470 -135
View File
@@ -25,7 +25,6 @@
#include "config.h" /* Generated by configure script */
#include <ctype.h> /* isblank() */
#include <sched.h> /* sched_yield() */
#include <string.h>
#include <sys/prctl.h>
#include <sys/resource.h>
@@ -49,8 +48,6 @@
#include "utmp-api.h"
#include "schedule.h"
#define RESPAWN_MAX 10 /* Prevent endless respawn of faulty services. */
static struct wq work = {
.cb = service_worker,
};
@@ -198,6 +195,8 @@ static int lredirect(svc_t *svc)
char *tag = basename(svc->cmd);
char *prio = "daemon.info";
sched_yield();
fds = open(ptsname(fd), O_RDONLY);
close(fd);
if (fds == -1)
@@ -262,37 +261,6 @@ static int redirect(svc_t *svc)
return 0;
}
/*
* non-zero env, no checking if file exists or not
*/
static char *svc_getenv(svc_t *svc)
{
int v = 0;
if (!svc->env[0])
return NULL;
if (svc->env[0] == '-')
v = 1;
return &svc->env[v];
}
/*
* Check if svc has env, if env file exists returns true
* if it doesn't exist, but has '-', also true. if svc
* doesn't have env, also true.
*/
static int check_env(svc_t *svc)
{
char *env = svc_getenv(svc);
if (!env)
return 1;
return fexist(env);
}
/*
* Source environment file, if it exists
* Note: must be called from privsepped child
@@ -309,7 +277,7 @@ static void source_env(svc_t *svc)
if (!fn)
return;
/* Warning in service_start() after check_env() */
/* Warning in service_start() after svc_checkenv() */
fp = fopen(fn, "r");
if (!fp)
return;
@@ -384,6 +352,84 @@ static int is_norespawn(void)
fexist("/tmp/norespawn");
}
/* used for process group name, derived from originating filename,
* so to group multiple services, place them in the same .conf
*/
static char *group_name(svc_t *svc, char *buf, size_t len)
{
char *ptr;
if (!svc->file[0])
return svc_ident(svc, buf, len);
ptr = strrchr(svc->file, '/');
if (ptr)
ptr++;
else
ptr = svc->file;
strlcpy(buf, ptr, len);
ptr = strstr(buf, ".conf");
if (ptr)
*ptr = 0;
return buf;
}
static pid_t service_fork(svc_t *svc)
{
pid_t pid;
pid = fork();
if (pid == 0) {
char *home = NULL;
#ifdef ENABLE_STATIC
int uid = 0; /* XXX: Fix better warning that dropprivs is disabled. */
int gid = 0;
#else
int uid = getuser(svc->username, &home);
int gid = getgroup(svc->group);
#endif
sched_yield();
/* Set configured limits */
for (int i = 0; i < RLIMIT_NLIMITS; i++) {
if (setrlimit(i, &svc->rlimit[i]) == -1)
logit(LOG_WARNING,
"%s: rlimit: Failed setting %s",
svc->cmd, rlim2str(i));
}
/* Set desired user+group */
if (gid >= 0) {
if (setgid(gid))
_pe("%s: failed setgid(%d)", svc->cmd, gid);
}
if (uid >= 0) {
if (setuid(uid))
_pe("%s: failed setuid(%d)", svc->cmd, uid);
/* Set default path for regular users */
if (uid > 0)
setenv("PATH", _PATH_DEFPATH, 1);
if (home) {
setenv("HOME", home, 1);
if (chdir(home)) {
if (chdir("/"))
_pe("%s: failed chdir(%s) and chdir(/)", svc->cmd, home);
}
}
}
/* Source any environment from env:/path/to/file */
source_env(svc);
}
return pid;
}
/**
* service_start - Start service
* @svc: Service to start
@@ -395,6 +441,7 @@ static int service_start(svc_t *svc)
{
int result = 0, do_progress = 1;
sigset_t nmask, omask;
char grnam[80];
pid_t pid;
size_t i;
@@ -407,17 +454,28 @@ static int service_start(svc_t *svc)
/* Don't try and start service if it doesn't exist. */
if (!whichp(svc->cmd)) {
print(1, "%s: does not exist", svc->cmd);
logit(LOG_WARNING, "%s: missing or not in $PATH", svc->cmd);
svc_missing(svc);
return 1;
}
/* Unlike systemd we do not allow starting service if env is missing, unless - */
if (!check_env(svc)) {
print(1, "%s: environment file %s does not exist (yet)", svc->cmd, svc->env);
if (!svc_checkenv(svc)) {
logit(LOG_WARNING, "%s: missing env file %s", svc->cmd, svc->env);
svc_missing(svc);
return 1;
}
if (svc_is_tty(svc)) {
char *dev = tty_canonicalize(svc->dev);
if (!dev || !tty_exists(dev)) {
_d("TTY %s missing or invalid, halting service.", svc->dev);
svc_missing(svc);
return 1;
}
}
if (svc_is_sysv(svc))
logit(LOG_CONSOLE | LOG_NOTICE, "Calling '%s start' ...", svc->cmd);
@@ -439,47 +497,10 @@ static int service_start(svc_t *svc)
sigaddset(&nmask, SIGCHLD);
sigprocmask(SIG_BLOCK, &nmask, &omask);
pid = fork();
cgroup_service(svc->name, svc->id, pid);
pid = service_fork(svc);
if (pid == 0) {
int status;
char *home = NULL;
#ifdef ENABLE_STATIC
int uid = 0; /* XXX: Fix better warning that dropprivs is disabled. */
int gid = 0;
#else
int uid = getuser(svc->username, &home);
int gid = getgroup(svc->group);
#endif
char *args[MAX_NUM_SVC_ARGS + 1];
/* Set configured limits */
for (int i = 0; i < RLIMIT_NLIMITS; i++) {
if (setrlimit(i, &svc->rlimit[i]) == -1)
logit(LOG_WARNING,
"%s: rlimit: Failed setting %s",
svc->cmd, rlim2str(i));
}
/* Set desired user+group */
if (gid >= 0)
setgid(gid);
if (uid >= 0) {
setuid(uid);
/* Set default path for regular users */
if (uid > 0)
setenv("PATH", _PATH_DEFPATH, 1);
if (home) {
setenv("HOME", home, 1);
chdir(home);
}
}
/* Source any environment from env:/path/to/file */
source_env(svc);
int status;
if (!svc_is_sysv(svc)) {
wordexp_t we = { 0 };
@@ -543,7 +564,8 @@ static int service_start(svc_t *svc)
}
args[i] = NULL;
redirect(svc);
if (!svc_is_tty(svc))
redirect(svc);
sig_unblock();
/*
@@ -561,6 +583,8 @@ static int service_start(svc_t *svc)
if (svc_is_runtask(svc))
status = exec_runtask(args[0], &args[1]);
else if (svc_is_tty(svc))
status = tty_exec(svc);
else
status = execvp(args[0], &args[1]);
@@ -578,6 +602,11 @@ static int service_start(svc_t *svc)
_d("Starting %s %s", svc->cmd, buf);
}
if (svc_is_tty(svc))
cgroup_user("getty", pid);
else
cgroup_service(group_name(svc, grnam, sizeof(grnam)), pid, &svc->cgroup);
logit(LOG_CONSOLE | LOG_NOTICE, "Starting %s[%d]", svc_ident(svc, NULL, 0), pid);
svc->pid = pid;
@@ -646,12 +675,19 @@ static void service_cleanup(svc_t *svc)
{
char *fn;
/* PID collected, cancel any pending SIGKILL */
service_timeout_cancel(svc);
fn = pid_file(svc);
if (remove(fn) && errno != ENOENT)
if (fn && remove(fn) && errno != ENOENT)
logit(LOG_CRIT, "Failed removing service %s pidfile %s",
basename(svc->cmd), fn);
/* No longer running, update books. */
if (svc_is_tty(svc) && svc->pid > 1)
utmp_set_dead(svc->pid); /* Set DEAD_PROCESS UTMP entry */
svc->oldpid = svc->pid;
svc->start_time = svc->pid = 0;
}
@@ -695,7 +731,7 @@ static int service_stop(svc_t *svc)
if (svc->pid > 1) {
/* Kill all children in the same proess group, e.g. logit */
rc = kill(-svc->pid, svc->sighalt);
_d("kill(-%d, %d) => rc %d", svc->pid, svc->sighalt, rc);
/* PID lost or forking process never really started */
if (rc == -1 && ESRCH == errno)
service_cleanup(svc);
@@ -862,6 +898,30 @@ static void parse_env(svc_t *svc, char *env)
strlcpy(svc->env, env, sizeof(svc->env));
}
static void parse_cgroup(svc_t *svc, char *cgroup)
{
char *ptr = cgroup;
if (!cgroup)
return;
if (cgroup[0] == '.') {
ptr = strchr(cgroup, ':');
if (ptr)
*ptr++ = 0;
strlcpy(svc->cgroup.name, &cgroup[1], sizeof(svc->cgroup.name));
if (!ptr)
return;
}
if (strlen(ptr) >= sizeof(svc->cgroup)) {
_e("%s: cgroup settings too long (>%d chars)", svc->cmd, sizeof(svc->cgroup));
return;
}
strlcpy(svc->cgroup.cfg, ptr, sizeof(svc->cgroup.cfg));
}
static void parse_sighalt(svc_t *svc, char *arg)
{
int signo;
@@ -888,6 +948,14 @@ static void parse_killdelay(svc_t *svc, char *delay)
svc->killdelay = (int)(sec * 1000);
}
static void parse_script(char *type, char *script, char *buf, size_t len)
{
if (access(script, X_OK))
logit(LOG_WARNING, "%s: %s:%s is missing or not executable, skipping.", type, script);
else
strlcpy(buf, script, len);
}
/*
* name:<name>
*/
@@ -903,13 +971,10 @@ static void parse_name(svc_t *svc, char *arg)
}
strlcpy(svc->name, name, sizeof(svc->name));
/* Warn if svc generates same condition as an existing service */
svc_validate(svc);
}
/**
* parse_cmdline_args - Update the command line args in the svc struct
/*
* Update the command line args in the svc struct
*
* strtok internal pointer must be positioned at first command line arg
* when this function is called.
@@ -918,23 +983,29 @@ static void parse_name(svc_t *svc, char *arg)
*/
static void parse_cmdline_args(svc_t *svc, char *cmd)
{
int diff = 0;
char sep = 0;
char *arg;
int i = 0;
if (strcmp(svc->args[i], cmd))
diff++;
strlcpy(svc->args[i++], cmd, sizeof(svc->args[0]));
while (i < MAX_NUM_SVC_ARGS)
svc->args[i++][0] = 0;
/*
* Copy supplied args. Stop at MAX_NUM_SVC_ARGS-1 to allow the args
* array to be zero-terminated.
*/
for (i = 1; (arg = strtok(NULL, " ")) && i < (MAX_NUM_SVC_ARGS - 1);) {
while ((arg = strtok(NULL, " ")) && i < (MAX_NUM_SVC_ARGS - 1)) {
char prev[sizeof(svc->args[0])] = { 0 };
char ch = arg[0];
size_t len;
if (!sep) {
strlcpy(prev, svc->args[i], sizeof(prev));
svc->args[i][0] = 0;
}
/* XXX: ugly string arg re-concatenation, fixme */
if (ch == '"' || ch == '\'')
sep = ch;
@@ -951,6 +1022,13 @@ static void parse_cmdline_args(svc_t *svc, char *cmd)
continue;
}
/* replace any @console arg with the expanded device name */
if (svc_is_tty(svc) && tty_isatcon(svc->args[i]))
strlcpy(svc->args[i], svc->dev, sizeof(svc->args[i]));
if (strcmp(svc->args[i], prev))
diff++;
sep = 0;
i++;
}
@@ -959,15 +1037,16 @@ static void parse_cmdline_args(svc_t *svc, char *cmd)
* Clear remaining args in case they were set earlier.
* This also zero-terminates the args array.
*/
while (i < MAX_NUM_SVC_ARGS)
svc->args[i++][0] = 0;
#if 0
for (i = 0; i < MAX_NUM_SVC_ARGS; i++) {
if (!svc->args[i][0])
break;
_d("%s ", svc->args[i]);
while (i < MAX_NUM_SVC_ARGS) {
if (svc->args[i++][0]) {
svc->args[i-1][0] = 0;
diff++;
}
}
#endif
if (diff)
_d("Modified args for %s detected", cmd);
svc->args_dirty = (diff > 0);
}
@@ -1031,7 +1110,10 @@ int service_register(int type, char *cfg, struct rlimit rlimit[], char *file)
char *cmd, *desc, *runlevels = NULL, *cond = NULL;
char *username = NULL, *log = NULL, *pid = NULL;
char *name = NULL, *halt = NULL, *delay = NULL;
char *id = NULL, *env = NULL;
char *id = NULL, *env = NULL, *cgroup = NULL;
char *pre_script = NULL, *post_script = NULL;
struct tty tty = { 0 };
char *dev = NULL;
int levels = 0;
int manual = 0;
char *line;
@@ -1042,7 +1124,7 @@ int service_register(int type, char *cfg, struct rlimit rlimit[], char *file)
return errno = EINVAL;
}
line = strdup(cfg);
line = strdupa(cfg);
if (!line)
return 1;
@@ -1064,15 +1146,17 @@ int service_register(int type, char *cfg, struct rlimit rlimit[], char *file)
}
}
cmd = strtok(line, " ");
cmd = strtok(line, " \t");
if (!cmd) {
incomplete:
_e("Incomplete service '%s', cannot register", cfg);
free(line);
return errno = ENOENT;
}
while (cmd) {
if (type == SVC_TYPE_TTY && cmd[0] == '@')
break; /* @console */
if (cmd[0] == '@') /* @username[:group] */
username = &cmd[1];
else if (cmd[0] == '[') /* [runlevels] */
@@ -1093,8 +1177,16 @@ int service_register(int type, char *cfg, struct rlimit rlimit[], char *file)
halt = &cmd[5];
else if (!strncasecmp(cmd, "kill:", 5))
delay = &cmd[5];
else if (!strncasecmp(cmd, "pre:", 4))
pre_script = &cmd[4];
else if (!strncasecmp(cmd, "post:", 5))
post_script = &cmd[5];
else if (!strncasecmp(cmd, "env:", 4))
env = &cmd[4];
else if (!strncasecmp(cmd, "cgroup:", 7))
cgroup = &cmd[7]; /* only settings */
else if (!strncasecmp(cmd, "cgroup.", 7))
cgroup = &cmd[6]; /* with group */
else
break;
@@ -1107,25 +1199,63 @@ int service_register(int type, char *cfg, struct rlimit rlimit[], char *file)
levels = conf_parse_runlevels(runlevels);
if (runlevel > 0 && !ISOTHER(levels, 0)) {
_d("Skipping %s, bootstrap is completed.", cmd);
free(line);
return 0;
}
if (!id)
id = "";
svc = svc_find(cmd, id);
if (type == SVC_TYPE_TTY) {
size_t i, len = 0;
if (tty_parse_args(cmd, &tty))
return errno;
if (tty.cmd)
len += strlen(tty.cmd);
else
len += 3;
len += tty.num + 1;
for (i = 0; i < tty.num; i++)
len += strlen(tty.args[i]) + 1;
line = alloca(len);
if (!line)
return errno;
snprintf(line, len, "%s", tty.cmd ?: "tty");
for (i = 0; i < tty.num; i++) {
strlcat(line, " ", len);
strlcat(line, tty.args[i], len);
}
cmd = strtok(line, " \t");
if (!cmd)
return errno;
if (tty_isatcon(tty.dev))
dev = tty_atcon();
else
dev = tty.dev;
next:
svc = svc_find_by_tty(dev);
} else
svc = svc_find(cmd, id);
if (!svc) {
_d("Creating new svc for %s id #%s type %d", cmd, id, type);
svc = svc_new(cmd, id, type);
if (!svc) {
_e("Out of memory, cannot register service %s", cmd);
free(line);
return errno = ENOMEM;
}
if (type == SVC_TYPE_SERVICE && manual)
svc_stop(svc);
} else {
/* e.g., if missing cmd or env before */
svc_unblock(svc);
}
/* Always clear svc PID file, for now. See TODO */
@@ -1142,42 +1272,102 @@ int service_register(int type, char *cfg, struct rlimit rlimit[], char *file)
strlcpy(svc->group, ptr, sizeof(svc->group));
}
strlcpy(svc->username, username, sizeof(svc->username));
} else {
getcuser(svc->username, sizeof(svc->username));
getcgroup(svc->group, sizeof(svc->group));
}
parse_cmdline_args(svc, cmd);
svc->runlevels = levels;
_d("Service %s runlevel 0x%2x", svc->cmd, svc->runlevels);
_d("Service %s runlevel 0x%02x", svc->cmd, svc->runlevels);
conf_parse_cond(svc, cond);
parse_name(svc, name);
if (type == SVC_TYPE_TTY) {
char *ptr;
if (dev)
strlcpy(svc->dev, dev, sizeof(svc->dev));
if (tty.baud)
strlcpy(svc->baud, tty.baud, sizeof(svc->baud));
if (tty.term)
strlcpy(svc->term, tty.term, sizeof(svc->term));
svc->noclear = tty.noclear;
svc->nowait = tty.nowait;
svc->nologin = tty.nologin;
svc->notty = tty.notty;
/* TTYs cannot be redirected */
log = NULL;
/* Create name:id tuple for identiy, e.g., tty:S0 */
ptr = strrchr(svc->dev, '/');
if (ptr) {
ptr++;
if (!strncmp(ptr, "tty", 3))
ptr += 3;
} else
ptr = svc->dev;
if (!id || id[0] == 0)
id = ptr;
strlcpy(svc->name, "tty", sizeof(svc->name));
strlcpy(svc->id, id, sizeof(svc->id));
} else
parse_name(svc, name);
parse_cmdline_args(svc, cmd);
/*
* Warn if svc generates same condition (based on name:id)
* as an existing service.
*/
svc_validate(svc);
if (halt)
parse_sighalt(svc, halt);
if (delay)
parse_killdelay(svc, delay);
if (pre_script)
parse_script("pre", pre_script, svc->pre_script, sizeof(svc->pre_script));
if (post_script)
parse_script("post", post_script, svc->post_script, sizeof(svc->post_script));
if (log)
parse_log(svc, log);
if (desc)
strlcpy(svc->desc, desc, sizeof(svc->desc));
else if (type == SVC_TYPE_TTY)
snprintf(svc->desc, sizeof(svc->desc), "Getty on %s", svc->dev);
if (env)
parse_env(svc, env);
if (file)
strlcpy(svc->file, file, sizeof(svc->file));
/* Set configured limits */
memcpy(svc->rlimit, rlimit, sizeof(svc->rlimit));
/* Seed with currently active group, may be empty */
strlcpy(svc->cgroup.name, cgroup_current, sizeof(svc->cgroup.name));
if (cgroup)
parse_cgroup(svc, cgroup);
/* New, recently modified or unchanged ... used on reload. */
if ((file && conf_changed(file)) || conf_changed(svc_getenv(svc)))
svc_mark_dirty(svc);
else
svc_mark_clean(svc);
svc_enable(svc);
/* for finit native services only, e.g. plugins/hotplug.c */
if (!file)
svc->protect = 1;
/* Free duped line, from above */
free(line);
/* continue expanding any 'tty @console ...' */
if (tty_isatcon(tty.dev)) {
dev = tty_atcon();
if (dev)
goto next;
}
return 0;
}
@@ -1205,36 +1395,47 @@ void service_monitor(pid_t lost, int status)
if (fexist(SYNC_SHUTDOWN) || lost <= 1)
return;
if (tty_respawn(lost))
return;
svc = svc_find_by_pid(lost);
if (!svc) {
_d("collected unknown PID %d", lost);
return;
}
_d("collected %s(%d), normal exit: %d, signaled: %d, exit code: %d",
svc->cmd, lost, WIFEXITED(status), WIFSIGNALED(status), WEXITSTATUS(status));
svc->status = status;
switch (svc->state) {
case SVC_CLEANUP_STATE:
case SVC_SETUP_STATE:
_d("collected script %s(%d), normal exit: %d, signaled: %d, exit code: %d",
svc->state == SVC_CLEANUP_STATE ? svc->post_script : svc->pre_script,
lost, WIFEXITED(status), WIFSIGNALED(status), WEXITSTATUS(status));
kill(-svc->pid, SIGKILL);
goto done;
default:
_d("collected %s(%d), normal exit: %d, signaled: %d, exit code: %d",
svc->cmd, lost, WIFEXITED(status), WIFSIGNALED(status), WEXITSTATUS(status));
svc->status = status;
break;
}
/* Forking sysv/services declare themselves with pid:!/path/to/pid.file */
if (svc_is_starting(svc) && svc_is_forking(svc))
return;
/* Terminate any children in the same proess group, e.g. logit */
kill(-svc->pid, SIGKILL);
/* Try removing PID file (in case service does not clean up after itself) */
if (svc_is_daemon(svc)) {
if (svc_is_daemon(svc) || svc_is_tty(svc)) {
service_cleanup(svc);
} else if (svc_is_runtask(svc)) {
/* run/task should run at least once per runlevel */
if (WIFEXITED(status) && !WEXITSTATUS(status))
svc->started = 1;
else
svc->started = 0;
}
/* Terminate any children in the same proess group, e.g. logit */
kill(-svc->pid, SIGKILL);
done:
/* No longer running, update books. */
svc->start_time = svc->pid = 0;
@@ -1247,6 +1448,112 @@ void service_monitor(pid_t lost, int status)
sm_step(&sm);
}
static void svc_mark_affected(char *cond)
{
svc_t *svc, *iter = NULL;
for (svc = svc_iterator(&iter, 1); svc; svc = svc_iterator(&iter, 0)) {
if (!svc_has_cond(svc))
continue;
if (cond_affects(cond, svc->cond))
svc_mark_dirty(svc);
}
}
/*
* Called on conf_reload() to update service reverse dependencies.
* E.g., if ospfd depends on zebra and the zebra Finit conf has
* changed, we need to mark the ospfd Finit conf as changed too.
*/
void service_update_rdeps(void)
{
svc_t *svc, *iter = NULL;
for (svc = svc_iterator(&iter, 1); svc; svc = svc_iterator(&iter, 0)) {
char cond[MAX_COND_LEN];
if (!svc_is_changed(svc))
continue;
svc_mark_affected(mkcond(svc, cond, sizeof(cond)));
}
}
static void service_kill_script(svc_t *svc)
{
if (svc->pid <= 1)
return;
kill(-svc->pid, SIGKILL);
}
static void service_pre_script(svc_t *svc)
{
svc->pid = service_fork(svc);
if (svc->pid < 0) {
_pe("Failed forking off %s pre-script %s", svc_ident(svc, NULL, 0), svc->pre_script);
return;
}
if (svc->pid == 0) {
char *argv[4] = {
"sh",
"-c",
svc->pre_script,
NULL
};
setenv("SERVICE_IDENT", svc_ident(svc, NULL, 0), 1);
execvp(_PATH_BSHELL, argv);
_exit(EX_OSERR);
}
/* Short hard-coded timeout to prevent locking up Finit */
service_timeout_after(svc, svc->killdelay, service_kill_script);
}
static void service_post_script(svc_t *svc)
{
svc->pid = service_fork(svc);
if (svc->pid < 0) {
_pe("Failed forking off %s post-script %s", svc_ident(svc, NULL, 0), svc->post_script);
return;
}
if (svc->pid == 0) {
char *argv[4] = {
"sh",
"-c",
svc->post_script,
NULL
};
int rc, sig;
rc = WEXITSTATUS(svc->status);
sig = WTERMSIG(svc->status);
setenv("SERVICE_IDENT", svc_ident(svc, NULL, 0), 1);
if (WIFEXITED(svc->status)) {
char val[4];
setenv("EXIT_CODE", "exited", 1);
snprintf(val, sizeof(val), "%d", rc & 0xff);
setenv("EXIT_STATUS", val, 1);
} else if (WIFSIGNALED(svc->status)) {
setenv("EXIT_CODE", "signal", 1);
setenv("EXIT_STATUS", sig2str(sig), 1);
}
execvp(_PATH_BSHELL, argv);
_exit(EX_OSERR);
}
/* Short hard-coded timeout to prevent locking up Finit */
service_timeout_after(svc, svc->killdelay, service_kill_script);
}
static void service_retry(svc_t *svc)
{
int timeout;
@@ -1256,12 +1563,13 @@ static void service_retry(svc_t *svc)
if (svc->state != SVC_HALTED_STATE ||
svc->block != SVC_BLOCK_RESTARTING) {
_d("%s not crashing anymore", svc->cmd);
if (!svc_is_tty(svc))
_d("%s not crashing anymore", svc->cmd);
*restart_cnt = 0;
return;
}
if (*restart_cnt >= RESPAWN_MAX) {
if (*restart_cnt >= SVC_RESPAWN_MAX) {
logit(LOG_CONSOLE | LOG_WARNING, "Service %s keeps crashing, not restarting.",
svc_ident(svc, NULL, 0));
svc_crashing(svc);
@@ -1274,12 +1582,12 @@ static void service_retry(svc_t *svc)
_d("%s crashed, trying to start it again, attempt %d", svc->cmd, *restart_cnt);
logit(LOG_CONSOLE | LOG_WARNING, "Service %s[%d] died, restarting (%d/%d)",
svc_ident(svc, NULL, 0), svc->pid, *restart_cnt, RESPAWN_MAX);
svc_ident(svc, NULL, 0), svc->oldpid, *restart_cnt, SVC_RESPAWN_MAX);
svc_unblock(svc);
service_step(svc);
/* Wait 2s for the first 5 respawns, then back off to 5s */
timeout = ((*restart_cnt) <= (RESPAWN_MAX / 2)) ? 2000 : 5000;
timeout = ((*restart_cnt) <= (SVC_RESPAWN_MAX / 2)) ? 2000 : 5000;
service_timeout_after(svc, timeout, service_retry);
}
@@ -1290,7 +1598,7 @@ static void svc_set_state(svc_t *svc, svc_state_t new)
*state = new;
/* if PID isn't collected within SVC_TERM_TIMEOUT msec, kill it! */
if ((*state == SVC_STOPPING_STATE)) {
if (*state == SVC_STOPPING_STATE) {
_d("%s is stopping, wait %d sec before sending SIGKILL ...",
svc->cmd, svc->killdelay / 1000);
service_timeout_cancel(svc);
@@ -1322,8 +1630,13 @@ restart:
switch (svc->state) {
case SVC_HALTED_STATE:
if (enabled)
svc_set_state(svc, SVC_READY_STATE);
if (enabled) {
if (svc_has_pre(svc)) {
svc_set_state(svc, SVC_SETUP_STATE);
service_pre_script(svc);
} else
svc_set_state(svc, SVC_READY_STATE);
}
break;
case SVC_DONE_STATE:
@@ -1333,13 +1646,20 @@ restart:
case SVC_STOPPING_STATE:
if (!svc->pid) {
/* PID was collected normally, no need to kill it */
_d("%s: Stopped normally, no need to send SIGKILL :)", svc->cmd);
char cond[MAX_COND_LEN];
_d("%s: stopped, cleaning up timers and conditions ...", svc->cmd);
service_timeout_cancel(svc);
cond_clear(mkcond(svc, cond, sizeof(cond)));
switch (svc->type) {
case SVC_TYPE_SERVICE:
svc_set_state(svc, SVC_HALTED_STATE);
case SVC_TYPE_TTY:
if (svc_has_post(svc)) {
svc_set_state(svc, SVC_CLEANUP_STATE);
service_post_script(svc);
} else
svc_set_state(svc, SVC_HALTED_STATE);
break;
case SVC_TYPE_TASK:
@@ -1355,6 +1675,16 @@ restart:
}
break;
case SVC_CLEANUP_STATE:
if (!svc->pid)
svc_set_state(svc, SVC_HALTED_STATE);
break;
case SVC_SETUP_STATE:
if (!svc->pid)
svc_set_state(svc, SVC_READY_STATE);
break;
case SVC_READY_STATE:
if (!enabled) {
svc_set_state(svc, SVC_HALTED_STATE);
@@ -1365,6 +1695,10 @@ restart:
err = service_start(svc);
if (err) {
if (svc_is_missing(svc)) {
svc_set_state(svc, SVC_HALTED_STATE);
break;
}
(*restart_cnt)++;
break;
}
@@ -1382,7 +1716,7 @@ restart:
}
if (!svc->pid) {
if (svc_is_daemon(svc)) {
if (svc_is_daemon(svc) || svc_is_tty(svc)) {
svc_restarting(svc);
svc_set_state(svc, SVC_HALTED_STATE);
@@ -1420,7 +1754,9 @@ restart:
case COND_ON:
if (svc_is_changed(svc)) {
if (svc->sighup) {
if (svc_nohup(svc))
service_stop(svc);
else {
/*
* wait until all processes have been
* stopped before continuing...
@@ -1428,8 +1764,7 @@ restart:
if (sm_is_in_teardown(&sm))
break;
service_restart(svc);
} else
service_stop(svc);
}
svc_mark_clean(svc);
}
@@ -1500,7 +1835,7 @@ void service_step_all(int types)
void service_worker(void *unused)
{
service_step_all(SVC_TYPE_SERVICE | SVC_TYPE_RUNTASK);
service_step_all(SVC_TYPE_RESPAWN | SVC_TYPE_RUNTASK);
}
/**
+1
View File
@@ -33,6 +33,7 @@ void service_unregister (svc_t *svc);
void service_runtask_clean (void);
void service_reload_dynamic (void);
void service_update_rdeps (void);
int service_step (svc_t *svc);
void service_step_all (int types);
+12 -10
View File
@@ -138,7 +138,9 @@ static struct sigmap {
/* Nonstandard signals found in all modern POSIX systems
(including both BSD and Linux). */
{ SIGWINCH, "SIGWINCH" },
#ifdef SIGSTKFLT
{ SIGSTKFLT, "SIGSTKFLT" },
#endif
{ SIGPWR, "SIGPWR" },
/* Archaic names for compatibility. */
@@ -192,10 +194,10 @@ void do_kill(int signo)
if (fgets(file, sizeof(file), fp)) {
if (strstr(file, "gdbserver"))
_d("Skipping %s ...", file);
else if (file[0] != '@')
kill(pid, signo);
else
else if (file[0] == '@')
_d("Skipping %s ...", &file[1]);
else
kill(pid, signo);
}
fclose(fp);
}
@@ -214,11 +216,11 @@ void do_shutdown(shutop_t op)
utmp_set_halt();
/*
* Tell all remaining non-monitored processes to exit, give them
* some time to exit gracefully, 2 sec is customary.
* Tell remaining non-monitored processes to exit, give them
* time to exit gracefully, 2 sec was customary, we go for 1.
*/
do_kill(SIGTERM);
do_sleep(2);
do_sleep(1);
do_kill(SIGKILL);
/* Exit plugins and API gracefully */
@@ -265,7 +267,7 @@ void do_shutdown(shutop_t op)
/* Reboot via watchdog or kernel, or shutdown? */
if (op == SHUT_REBOOT) {
if (wdog) {
if (wdog && wdog->pid > 1) {
int timeout = 10;
/* Wait here until the WDT reboots, or timeout with fallback */
@@ -274,15 +276,15 @@ void do_shutdown(shutop_t op)
do_sleep(1);
}
_e("Rebooting ...");
_d("Rebooting ...");
reboot(RB_AUTOBOOT);
} else if (op == SHUT_OFF) {
_e("Powering down ...");
_d("Powering down ...");
reboot(RB_POWER_OFF);
}
/* Also fallback if any of the other two fails */
_e("Halting ...");
_d("Halting ...");
reboot(RB_HALT_SYSTEM);
}
+11 -13
View File
@@ -156,9 +156,11 @@ restart:
/* Disable login in single-user mode as well as shutdown/reboot */
nologin();
/* Make sure to (re)load all *.conf in /etc/finit.d/ */
if (conf_any_change())
conf_reload();
if (runlevel != 0 && runlevel != 6) {
/* Make sure to (re)load all *.conf in /etc/finit.d/ */
if (conf_any_change())
conf_reload();
}
/* Reset once flag of runtasks */
service_runtask_clean();
@@ -204,10 +206,6 @@ restart:
break;
}
/* No TTYs run at bootstrap, they have a delayed start. */
if (prevlevel > 0)
tty_runlevel();
sm->state = SM_RUNNING_STATE;
break;
@@ -222,8 +220,7 @@ restart:
_d("Stopping services not allowed after reconf ...");
sm->in_teardown = 1;
cond_reload();
service_step_all(SVC_TYPE_SERVICE);
tty_reload(NULL);
service_step_all(SVC_TYPE_ANY);
sm->state = SM_RELOAD_WAIT_STATE;
break;
@@ -240,16 +237,17 @@ restart:
}
sm->in_teardown = 0;
/* Cleanup stale services */
svc_clean_dynamic(service_unregister);
_d("Starting services after reconf ...");
service_step_all(SVC_TYPE_SERVICE);
service_step_all(SVC_TYPE_ANY);
/* Cleanup stale services */
svc_clean_dynamic(service_unregister);
_d("Calling reconf hooks ...");
plugin_run_hooks(HOOK_SVC_RECONF);
service_step_all(SVC_TYPE_SERVICE);
service_step_all(SVC_TYPE_ANY);
_d("Reconfiguration done");
sm->state = SM_RUNNING_STATE;
+6 -2
View File
@@ -27,6 +27,8 @@
#include <sys/ttydefaults.h> /* Not included by default in musl libc */
#include <termios.h>
#include <helpers.h>
/* B0 means; keep kernel default */
speed_t stty_parse_speed(char *baud)
{
@@ -61,10 +63,12 @@ speed_t stty_parse_speed(char *baud)
{ 1152000, B1152000 },
{ 1500000, B1500000 },
{ 2000000, B2000000 },
#ifdef B4000000
{ 2500000, B2500000 },
{ 3000000, B3000000 },
{ 3500000, B3500000 },
{ 4000000, B4000000 },
#endif
};
if (!baud || !baud[0])
@@ -121,10 +125,10 @@ void stty(int fd, speed_t speed)
tcsetattr(fd, TCSAFLUSH, &term);
/* Show cursor again, if it was hidden previously */
write(fd, "\033[?25h", 6);
dprint(fd, "\033[?25h", 6);
/* Enable line wrap, if disabled previously */
write(fd, "\033[7h", 4);
dprint(fd, "\033[7h", 4);
}
/**
+89 -11
View File
@@ -44,6 +44,36 @@ static int jobcounter = 1;
static TAILQ_HEAD(, svc) svc_list = TAILQ_HEAD_INITIALIZER(svc_list);
static TAILQ_HEAD(, svc) gc_list = TAILQ_HEAD_INITIALIZER(gc_list);
/*
* Before gc removal of svc, make sure we don't clear an active
* condition of a new instance of the svc.
*/
static void maybe_clear_cond(svc_t *svc)
{
char ident[MAX_IDENT_LEN];
char cond[MAX_COND_LEN];
svc_t *iter = NULL;
svc_t *s;
mkcond(svc, cond, sizeof(cond));
svc_ident(svc, ident, sizeof(ident));
for (s = svc_iterator(&iter, 1); s; s = svc_iterator(&iter, 0)) {
char c[MAX_COND_LEN];
mkcond(s, c, sizeof(c));
if (!string_compare(cond, c))
continue;
_d("Not clearing cond %s from gc svc %s, provided by new active service %s",
cond, ident, svc_ident(s, NULL, 0));
return;
}
_d("Cleaning out %s, clearing any conditions ...", svc->name);
cond_clear(mkcond(svc, cond, sizeof(cond)));
}
static void svc_gc(void *arg)
{
struct timespec now;
@@ -52,7 +82,6 @@ static void svc_gc(void *arg)
clock_gettime(CLOCK_MONOTONIC_COARSE, &now);
TAILQ_FOREACH_SAFE(svc, &gc_list, link, next) {
char cond[MAX_COND_LEN];
int msec;
msec = (now.tv_sec - svc->gc.tv_sec) * 1000 +
@@ -61,8 +90,7 @@ static void svc_gc(void *arg)
continue;
TAILQ_REMOVE(&gc_list, svc, link);
_d("Cleaning out %s, clearing any conditions ...", svc->name);
cond_clear(mkcond(svc, cond, sizeof(cond)));
maybe_clear_cond(svc);
free(svc);
}
@@ -86,7 +114,7 @@ svc_t *svc_new(char *cmd, char *id, int type)
/* Find first job n:o if registering multiple instances */
for (svc = svc_iterator(&iter, 1); svc; svc = svc_iterator(&iter, 0)) {
if (!strcmp(svc->cmd, cmd)) {
if (cmd && !strcmp(svc->cmd, cmd)) {
job = svc->job;
break;
}
@@ -102,13 +130,17 @@ svc_t *svc_new(char *cmd, char *id, int type)
svc->job = job;
if (id && id[0])
strlcpy(svc->id, id, sizeof(svc->id));
strlcpy(svc->cmd, cmd, sizeof(svc->cmd));
if (cmd)
strlcpy(svc->cmd, cmd, sizeof(svc->cmd));
/* Default description, if missing */
strlcpy(svc->desc, svc->name, sizeof(svc->desc));
/* Default HALT signal to send */
svc->sighalt = SIGTERM;
if (svc_is_tty(svc))
svc->sighalt = SIGHUP;
else
svc->sighalt = SIGTERM;
/* Default delay between SIGTERM and SIGKILL */
svc->killdelay = SVC_TERM_TIMEOUT;
@@ -160,6 +192,8 @@ void svc_validate(svc_t *svc)
for (s = svc_iterator(&iter, 1); s; s = svc_iterator(&iter, 0)) {
char c[MAX_COND_LEN];
if (s->removed)
continue;
if (s == svc)
continue;
@@ -299,7 +333,7 @@ svc_t *svc_stop_completed(void)
svc_t *svc, *iter = NULL;
for (svc = svc_iterator(&iter, 1); svc; svc = svc_iterator(&iter, 0)) {
if (svc->state == SVC_STOPPING_STATE)
if (svc->state == SVC_STOPPING_STATE && svc->pid > 1)
return svc;
}
@@ -394,6 +428,26 @@ svc_t *svc_find_by_nameid(char *name, char *id)
return NULL;
}
svc_t *svc_find_by_tty(char *dev)
{
svc_t *svc, *iter = NULL;
/* this is valid for fallback (notty) shells */
if (!dev)
return NULL;
for (svc = svc_iterator(&iter, 1); svc; svc = svc_iterator(&iter, 0)) {
if (!svc_is_tty(svc))
continue;
if (!strcmp(dev, svc->dev))
return svc;
}
return NULL;
}
/**
* svc_find_by_plidfile - Find a service by its PID file
* @fn: PID file, can be absolute path or relative to /run
@@ -415,8 +469,20 @@ svc_t *svc_find_by_pidfile(char *fn)
pid_t pid;
pid = pid_file_read(fn);
if (pid == -1)
if (pid <= 0) {
for (svc = svc_iterator(&iter, 1); svc; svc = svc_iterator(&iter, 0)) {
int v = 0;
if (svc->pidfile[0] == '!')
v = 1;
if (strcmp(&svc->pidfile[v], fn))
continue;
return svc;
}
return NULL;
}
for (svc = svc_iterator(&iter, 1); svc; svc = svc_iterator(&iter, 0)) {
if (svc->pid != pid)
@@ -446,7 +512,7 @@ void svc_mark_dynamic(void)
if (svc->protect)
continue;
*((int *)&svc->dirty) = -1;
*((int *)&svc->removed) = 1;
}
}
@@ -458,6 +524,12 @@ void svc_mark_dirty(svc_t *svc)
void svc_mark_clean(svc_t *svc)
{
*((int *)&svc->dirty) = 0;
*((int *)&svc->args_dirty) = 0;
}
void svc_enable(svc_t *svc)
{
*((int *)&svc->removed) = 0;
}
/**
@@ -472,7 +544,7 @@ void svc_clean_dynamic(void (*cb)(svc_t *))
svc_t *svc, *iter = NULL;
for (svc = svc_iterator(&iter, 1); svc; svc = svc_iterator(&iter, 0)) {
if (svc->dirty == -1 && cb)
if (svc->removed && cb)
cb(svc);
}
}
@@ -532,6 +604,12 @@ int svc_enabled(svc_t *svc)
if (svc_is_removed(svc) || svc_is_blocked(svc))
return 0;
if (svc_is_missing(svc))
return 0;
if (svc_is_tty(svc) && bootstrap)
return 0;
return 1;
}
@@ -602,7 +680,7 @@ int svc_parse_jobstr(char *str, size_t len, int (*found)(svc_t *), int (not_foun
char *ptr;
_d("Got token:'%s'", input);
token = sanitize(input, len);
token = sanitize(input, strlen(input) + 1);
if (!token) {
_d("Sanitation of token:'%s' failed", input);
goto next;
+116 -21
View File
@@ -32,6 +32,7 @@
#include <lite/queue.h> /* BSD sys/queue.h API */
#include <uev/uev.h>
#include "cgroup.h"
#include "helpers.h"
typedef int svc_cmd_t;
@@ -41,16 +42,20 @@ typedef enum {
SVC_TYPE_SERVICE = 1, /* Monitored, will be respawned */
SVC_TYPE_TASK = 2, /* One-shot, runs in parallell */
SVC_TYPE_RUN = 4, /* Like task, but wait for completion */
SVC_TYPE_TTY = 8, /* Like service, but dedicated to TTYs */
SVC_TYPE_SYSV = 32, /* SysV style init.d script w/ start/stop */
} svc_type_t;
#define SVC_TYPE_ANY (-1)
#define SVC_TYPE_RESPAWN (SVC_TYPE_SERVICE | SVC_TYPE_TTY)
#define SVC_TYPE_RUNTASK (SVC_TYPE_RUN | SVC_TYPE_TASK | SVC_TYPE_SYSV)
typedef enum {
SVC_HALTED_STATE = 0, /* Not allowed in runlevel, or not enabled. */
SVC_DONE_STATE, /* Task/Run job has been run */
SVC_STOPPING_STATE, /* Waiting to collect the child process */
SVC_CLEANUP_STATE, /* Running post: script */
SVC_SETUP_STATE, /* Running pre: script */
SVC_WAITING_STATE, /* Condition is in flux, process SIGSTOPed */
SVC_READY_STATE, /* Enabled but condition not satisfied */
SVC_RUNNING_STATE, /* Process running */
@@ -77,6 +82,9 @@ typedef enum {
/* Default kill delay (msec) after SIGTERM (svc->sighalt) that we SIGKILL processes */
#define SVC_TERM_TIMEOUT 3000
/* Prevent endless respawn of faulty services. */
#define SVC_RESPAWN_MAX 10
/*
* Default enable for all services, can be stopped by means
* of issuing an initctl call. E.g.
@@ -86,17 +94,17 @@ typedef enum {
typedef struct svc {
TAILQ_ENTRY(svc) link;
/* Instance specifics */
int job; /* JOB: */
char id[MAX_ID_LEN]; /* :ID */
/* Origin of service */
char file[MAX_ARG_LEN];
/* Limits and scoping */
struct rlimit rlimit[RLIMIT_NLIMITS];
struct cgroup cgroup;
/* Service details */
int sighalt; /* Signal to stop prorcess, default: SIGTERM */
int killdelay; /* Delay in msec before sending SIGKILL */
pid_t pid;
pid_t oldpid, pid;
char pidfile[256];
long start_time; /* Start time, as seconds since boot, from sysinfo() */
int started; /* Set for run/task/sysv to track if started */
@@ -104,27 +112,45 @@ typedef struct svc {
const svc_state_t state; /* Paused, Reloading, Restart, Running, ... */
svc_type_t type; /* Service, run, task, ... */
int protect; /* Services like dbus-daemon & udev by Finit */
const int dirty; /* -1: removal, 0: unmodified, 1: modified */
const int dirty; /* 0: unmodified, 1: modified */
const int removed;
int starting; /* ... waiting for pidfile to be re-asserted */
int runlevels;
int sighup; /* This service supports SIGHUP :) */
svc_block_t block; /* Reason that this service is currently stopped */
char cond[MAX_COND_LEN];
/* Instance specifics */
int job; /* For intenal use only, canonical ref is NAME:ID */
char name[MAX_ARG_LEN];
char id[MAX_ID_LEN]; /* :ID */
/* Counters */
char once; /* run/task, (at least) once per runlevel */
const char restart_cnt; /* Incremented for each restart by service monitor. */
/* Set for services we need to redirect stdout/stderr to syslog */
struct {
char enabled;
char null;
char console;
char file[64];
char prio[20];
char ident[20];
} log;
union {
/* services we redirect stdout/stderr to syslog (not TTYs!) */
struct {
char enabled;
char null;
char console;
char file[64];
char prio[20];
char ident[20];
} log;
/* Only for TTY type services */
struct {
char dev[32];
char baud[10];
char term[10];
char noclear;
char nowait;
char nologin;
char notty;
};
};
/* Identity */
char username[MAX_USER_LEN];
@@ -133,8 +159,11 @@ typedef struct svc {
/* Command, arguments and service description */
char cmd[MAX_ARG_LEN];
char args[MAX_NUM_SVC_ARGS][MAX_ARG_LEN];
int args_dirty;
char desc[MAX_STR_LEN];
char env[MAX_ARG_LEN];
char pre_script[MAX_ARG_LEN];
char post_script[MAX_ARG_LEN];
/*
* Used to forcefully kill services that won't shutdown on
@@ -155,6 +184,7 @@ svc_t *svc_find (char *cmd, char *id);
svc_t *svc_find_by_pid (pid_t pid);
svc_t *svc_find_by_jobid (int job, char *id);
svc_t *svc_find_by_nameid (char *name, char *id);
svc_t *svc_find_by_tty (char *dev);
svc_t *svc_find_by_pidfile (char *fn);
svc_t *svc_iterator (svc_t **iter, int first);
@@ -173,30 +203,37 @@ void svc_clean_dynamic (void (*cb)(svc_t *));
int svc_clean_bootstrap (svc_t *svc);
void svc_prune_bootstrap (void);
void svc_enable (svc_t *svc);
int svc_enabled (svc_t *svc);
int svc_is_unique (svc_t *svc);
int svc_parse_jobstr (char *str, size_t len, int (*found)(svc_t *), int (not_found)(char *, char *));
static inline int svc_is_daemon (svc_t *svc) { return svc && SVC_TYPE_SERVICE == svc->type; }
static inline int svc_is_sysv (svc_t *svc) { return svc && SVC_TYPE_SYSV == svc->type; }
static inline int svc_is_runtask (svc_t *svc) { return svc && (SVC_TYPE_RUNTASK & svc->type); }
static inline int svc_is_daemon (svc_t *svc) { return svc && SVC_TYPE_SERVICE == svc->type; }
static inline int svc_is_sysv (svc_t *svc) { return svc && SVC_TYPE_SYSV == svc->type; }
static inline int svc_is_tty (svc_t *svc) { return svc && SVC_TYPE_TTY == svc->type; }
static inline int svc_is_runtask (svc_t *svc) { return svc && (SVC_TYPE_RUNTASK & svc->type);}
static inline int svc_is_forking (svc_t *svc) { return (svc_is_daemon(svc) || svc_is_sysv(svc)) && svc->pidfile[0] == '!'; }
static inline int svc_in_runlevel (svc_t *svc, int runlevel) { return svc && ISSET(svc->runlevels, runlevel); }
static inline int svc_has_sighup (svc_t *svc) { return svc && 0 != svc->sighup; }
static inline int svc_nohup (svc_t *svc) { return svc && (0 == svc->sighup || 0 != svc->args_dirty); }
static inline int svc_has_pidfile (svc_t *svc) { return svc_is_daemon(svc) && svc->pidfile[0] != 0 && svc->pidfile[0] != '!'; }
static inline int svc_has_pre (svc_t *svc) { return svc->pre_script[0]; }
static inline int svc_has_post (svc_t *svc) { return svc->post_script[0]; }
static inline void svc_starting (svc_t *svc) { if (svc) svc->starting = 1; }
static inline void svc_started (svc_t *svc) { if (svc) svc->starting = 0; }
static inline int svc_is_starting (svc_t *svc) { return svc && 0 != svc->starting; }
static inline int svc_is_running (svc_t *svc) { return svc && svc->state == SVC_RUNNING_STATE; }
static inline int svc_is_removed (svc_t *svc) { return svc && -1 == svc->dirty; }
static inline int svc_is_changed (svc_t *svc) { return svc && 0 != svc->dirty; }
static inline int svc_is_updated (svc_t *svc) { return svc && 1 == svc->dirty; }
static inline int svc_is_removed (svc_t *svc) { return svc && svc->removed; }
static inline int svc_is_changed (svc_t *svc) { return svc && 0 != svc->dirty; }
static inline int svc_is_updated (svc_t *svc) { return svc && 1 == svc->dirty; }
static inline int svc_is_blocked (svc_t *svc) { return svc && svc->block != SVC_BLOCK_NONE; }
static inline int svc_is_busy (svc_t *svc) { return svc && svc->block == SVC_BLOCK_BUSY; }
static inline int svc_is_missing (svc_t *svc) { return svc && svc->block == SVC_BLOCK_MISSING; }
static inline void svc_unblock (svc_t *svc) { if (svc) svc->block = SVC_BLOCK_NONE; }
#define svc_start(svc) svc_unblock(svc)
static inline void svc_stop (svc_t *svc) { if (svc) svc->block = SVC_BLOCK_USER; }
@@ -205,6 +242,27 @@ static inline void svc_missing (svc_t *svc) { if (svc) svc->block = SVC_BLOC
static inline void svc_restarting (svc_t *svc) { if (svc) svc->block = SVC_BLOCK_RESTARTING; }
static inline void svc_crashing (svc_t *svc) { if (svc) svc->block = SVC_BLOCK_CRASHING; }
/* Has condition in configuration and cond is allowed? */
static inline int svc_has_cond(svc_t *svc)
{
if (!svc->cond[0])
return 0;
switch (svc->type) {
case SVC_TYPE_SERVICE:
case SVC_TYPE_TASK:
case SVC_TYPE_RUN:
case SVC_TYPE_TTY:
case SVC_TYPE_SYSV:
return 1;
default:
break;
}
return 0;
}
static inline char *svc_status(svc_t *svc)
{
if (!svc)
@@ -249,6 +307,12 @@ static inline char *svc_status(svc_t *svc)
case SVC_WAITING_STATE:
return "waiting";
case SVC_CLEANUP_STATE:
return "cleanup";
case SVC_SETUP_STATE:
return "setup";
case SVC_READY_STATE:
return "ready";
@@ -324,6 +388,37 @@ static inline char *svc_jobid(svc_t *svc, char *buf, size_t len)
return buf;
}
/*
* non-zero env, no checking if file exists or not
*/
static inline char *svc_getenv(svc_t *svc)
{
int v = 0;
if (!svc->env[0])
return NULL;
if (svc->env[0] == '-')
v = 1;
return &svc->env[v];
}
/*
* Check if svc has env, if env file exists returns true
* if it doesn't exist, but has '-', also true. if svc
* doesn't have env, also true.
*/
static inline int svc_checkenv(svc_t *svc)
{
char *env = svc_getenv(svc);
if (!env || svc->env[0] == '-')
return 1;
return fexist(env);
}
#endif /* FINIT_SVC_H_ */
/**
+124 -392
View File
@@ -35,24 +35,22 @@
#include "finit.h"
#include "conf.h"
#include "helpers.h"
#include "service.h"
#include "tty.h"
#include "util.h"
#include "utmp-api.h"
#ifdef FALLBACK_SHELL
static pid_t fallback = 0;
#endif
static LIST_HEAD(, tty) tty_list = LIST_HEAD_INITIALIZER();
static char *canonicalize(char *tty)
char *tty_canonicalize(char *dev)
{
struct stat st;
static char path[80];
struct stat st;
if (!tty)
if (!dev)
return NULL;
if (tty_isatcon(dev))
return dev;
strlcpy(path, tty, sizeof(path));
strlcpy(path, dev, sizeof(path));
if (stat(path, &st)) {
if (!strncmp(path, _PATH_DEV, strlen(_PATH_DEV))) {
unavailable:
@@ -60,7 +58,7 @@ static char *canonicalize(char *tty)
return path;
}
snprintf(path, sizeof(path), "%s%s", _PATH_DEV, tty);
snprintf(path, sizeof(path), "%s%s", _PATH_DEV, dev);
if (stat(path, &st))
goto unavailable;
}
@@ -71,37 +69,65 @@ static char *canonicalize(char *tty)
return path;
}
void tty_mark(void)
/*
* The @console syntax is a wildcard to match the system console(s) given
* on the kernel cmdline. As such it can match multiple, or even none.
*/
int tty_isatcon(char *dev)
{
struct tty *tty;
LIST_FOREACH(tty, &tty_list, link)
tty->dirty = -1;
return dev && !strcmp(dev, "@console");
}
void tty_sweep(void)
/*
* Returns console TTYs known by the kernel, from cmdline
*/
char *tty_atcon(void)
{
struct tty *tty, *tmp;
static char *buf = NULL;
static char *save;
char *ptr = NULL;
char *dev;
LIST_FOREACH_SAFE(tty, &tty_list, link, tmp) {
if (!tty->dirty)
continue;
if (!buf) {
FILE *fp;
_d("TTY %s dirty, stopping ...", tty->name);
tty_stop(tty);
if (tty->dirty == -1) {
_d("TTY %s removed, cleaning up.", tty->name);
tty_unregister(tty);
fp = fopen("/sys/class/tty/console/active", "r");
if (!fp) {
_e("Cannot find system console, is sysfs not mounted?");
errno = ENOENT;
return NULL;
}
buf = malloc(512);
if (!buf) {
_pe("Failed allocating memory for @console");
fclose(fp);
return NULL;
}
if (!fgets(buf, 512, fp)) {
fclose(fp);
goto done;
}
fclose(fp);
ptr = chomp(buf);
_d("consoles: %s", ptr);
}
dev = strtok_r(ptr, " \t", &save);
if (!dev) {
done:
free(buf);
return buf = NULL;
}
return dev;
}
/**
* tty_register - Register a getty on a device
* @line: Configuration, text after initial "tty"
* @rlimit: Limits for this service/run/task, may be global limits
* @file: The file name TTY was loaded from
* tty_parse_args - Parse cmdline args for a tty
* @cmd: command or tty
*
* A Finit tty line can use the internal getty implementation or an
* external one, like the BusyBox getty for instance. This function
@@ -119,66 +145,55 @@ void tty_sweep(void)
* Different getty implementations prefer the TTY device argument in
* different order, so take care to investigate this first.
*/
int tty_register(char *line, struct rlimit rlimit[], char *file)
int tty_parse_args(char *cmd, struct tty *tty)
{
struct tty *entry;
size_t i, num = 0;
char *tok, *cmd = NULL, *args[TTY_MAX_ARGS], buf[256];
char *dev = NULL, *baud = NULL;
char *runlevels = NULL, *term = NULL;
int insert = 0, noclear = 0, nowait = 0, nologin = 0, atcon = 0;
char *dev = NULL;
size_t i;
if (!line) {
_e("Missing argument");
return errno = EINVAL;
}
/*
* Split line in separate arguments. For an external getty
* this is used with execv(), for the built-in it simplifies
* further translation.
*/
tok = strtok(line, " \t");
while (tok && num < NELEMS(args)) {
if (!strcmp(tok, "noclear"))
noclear = 1;
else if (!strcmp(tok, "nowait"))
nowait = 1;
else if (!strcmp(tok, "nologin"))
nologin = 1;
do {
if (!strcmp(cmd, "noclear"))
tty->noclear = 1;
else if (!strcmp(cmd, "nowait"))
tty->nowait = 1;
else if (!strcmp(cmd, "nologin"))
tty->nologin = 1;
else if (!strcmp(cmd, "notty"))
tty->notty = 1; /* for fallback shell */
else if (!access(cmd, X_OK))
tty->cmd = cmd;
else
args[num++] = tok;
tty->args[tty->num++] = cmd;
tok = strtok(NULL, " \t");
}
cmd = strtok(NULL, " \t");
} while (cmd && tty->num < NELEMS(tty->args));
/* skip /dev probe, we just want a bríngup shell */
if (tty->notty)
return 0;
/* Iterate over all args */
for (i = 0; i < num; i++) {
for (i = 0; i < tty->num; i++) {
/*
* First, figure out if built-in or external getty
* tty [12345] /dev/ttyAMA0 115200 noclear vt220 # built-in
* tty [12345] /sbin/getty -L 115200 @console vt100 noclear # external
*/
if ((!cmd && !dev) || (cmd && !dev)) {
if (args[i][0] == '[')
runlevels = line;
if (!strcmp(args[i], "@console"))
dev = args[i];
if (!strncmp(args[i], "/dev", 4))
dev = args[i];
if (!strncmp(args[i], "tty", 3) || !strcmp(args[i], "console"))
dev = args[i];
if (!access(args[i], X_OK))
cmd = args[i];
if (!dev) {
if (!strcmp(tty->args[i], "@console"))
dev = tty->args[i];
if (!strncmp(tty->args[i], "/dev", 4))
dev = tty->args[i];
if (!strncmp(tty->args[i], "tty", 3) || !strcmp(tty->args[i], "console"))
dev = tty->args[i];
/* The first arg must be one of the above */
continue;
}
/* Built-in getty args */
if (!cmd && dev) {
if (isdigit(args[i][0])) {
baud = args[i];
if (!tty->cmd && dev) {
if (isdigit(tty->args[i][0])) {
tty->baud = tty->args[i];
continue;
}
@@ -186,369 +201,86 @@ int tty_register(char *line, struct rlimit rlimit[], char *file)
* Last arg, if not anything else, is the value
* to be used for the TERM environment variable.
*/
if (i + 1 == num)
term = args[i];
if (i + 1 == tty->num)
tty->term = tty->args[i];
}
}
if (!dev) {
error:
tty->dev = tty_canonicalize(dev);
if (!tty->dev) {
_e("Incomplete or non-existing TTY device given, cannot register.");
return errno = EINVAL;
}
/* Auto-detect serial console, for embedded devices mostly */
if (!strcmp(dev, "@console")) {
FILE *fp;
fp = fopen("/sys/class/tty/console/active", "r");
if (!fp) {
_e("Cannot find system console, is sysfs not mounted?");
return errno = ENOENT;
}
atcon = 1;
if (fgets(buf, sizeof(buf), fp))
dev = strtok(chomp(buf), " \t");
fclose(fp);
}
again:
/* Ensure all getty (built-in + external) are registered with absolute path */
dev = canonicalize(dev);
if (!dev)
goto error;
entry = tty_find(dev);
if (!entry) {
entry = calloc(1, sizeof(*entry));
if (!entry)
return errno = ENOMEM;
insert = 1;
} else {
if (entry->cmd) {
free(entry->cmd);
entry->cmd = NULL;
for (i = 0; i < TTY_MAX_ARGS; i++) {
if (entry->args[i])
free(entry->args[i]);
entry->args[i] = NULL;
}
}
insert = 0;
}
strlcpy(entry->name, dev, sizeof(entry->name));
strlcpy(entry->baud, baud ? baud : "", sizeof(entry->baud));
strlcpy(entry->term, term ? term : "", sizeof(entry->term));
entry->noclear = noclear;
entry->nowait = nowait;
entry->nologin = nologin;
entry->runlevels = conf_parse_runlevels(runlevels);
/* External getty */
if (cmd) {
int j = 0;
tok = strrchr(cmd, '/');
if (!tok)
tok = cmd;
else
tok++;
entry->cmd = strdup(cmd);
args[1] = strdup(tok);
for (i = 1; i < num; i++) {
char *arg = args[i];
/* Replace @console with actual device */
if (arg && !strcmp(arg, "@console"))
arg = dev;
if (arg)
entry->args[j++] = strdup(arg);
}
entry->args[++j] = NULL;
}
_d("Registering %s getty on TTY %s at %s baud with term %s on runlevels %s",
cmd ? "external" : "built-in", dev, baud ?: "NULL", term ?: "N/A", runlevels ?: "[2-5]");
if (insert)
LIST_INSERT_HEAD(&tty_list, entry, link);
/* Register configured limits */
memcpy(entry->rlimit, rlimit, sizeof(entry->rlimit));
if (file && conf_changed(file))
entry->dirty = 1; /* Modified, restart */
else
entry->dirty = 0; /* Not modified */
_d("TTY %s is %sdirty", dev, entry->dirty ? "" : "NOT ");
if (atcon) {
dev = strtok(NULL, " \t");
if (dev) {
_d("Found another @console: %s", dev);
goto again;
}
}
_d("Registering %s getty on TTY %s at %s baud with term %s", tty->cmd ? "external" : "built-in",
tty->dev, tty->baud ?: "0", tty->term ?: "N/A");
return 0;
}
int tty_unregister(struct tty *tty)
{
if (!tty) {
_e("Missing argument");
return errno = EINVAL;
}
LIST_REMOVE(tty, link);
if (tty->cmd) {
int i;
free(tty->cmd);
for (i = 0; i < TTY_MAX_ARGS; i++) {
if (tty->args[i])
free(tty->args[i]);
tty->args[i] = NULL;
}
}
free(tty);
return 0;
}
struct tty *tty_find(char *dev)
{
struct tty *entry;
LIST_FOREACH(entry, &tty_list, link) {
if (!strcmp(dev, entry->name))
return entry;
}
return NULL;
}
size_t tty_num(void)
{
size_t num = 0;
struct tty *entry;
LIST_FOREACH(entry, &tty_list, link)
num++;
return num;
}
size_t tty_num_active(void)
{
size_t num = 0;
struct tty *entry;
LIST_FOREACH(entry, &tty_list, link) {
if (entry->pid)
num++;
}
return num;
}
struct tty *tty_find_by_pid(pid_t pid)
{
struct tty *entry;
LIST_FOREACH(entry, &tty_list, link) {
if (entry->pid == pid)
return entry;
}
return NULL;
}
static int tty_exist(char *dev)
int tty_exists(char *dev)
{
int fd, result;
struct termios c;
fd = open(dev, O_RDWR);
if (-1 == fd)
return 1;
return 0;
/* XXX: Add check for errno == EIO? */
result = tcgetattr(fd, &c);
close(fd);
return result;
return result == 0;
}
void tty_start(struct tty *tty)
int tty_exec(svc_t *tty)
{
char *args[MAX_NUM_SVC_ARGS];
char *dev;
int i, j;
if (tty->pid) {
_d("%s: TTY already active", tty->name);
return;
if (tty->notty) {
/*
* Become session leader and set controlling TTY
* to enable Ctrl-C and job control in shell.
*/
setsid();
ioctl(STDIN_FILENO, TIOCSCTTY, 1);
prctl(PR_SET_NAME, "finitsh", 0, 0, 0);
return execl(_PATH_BSHELL, _PATH_BSHELL, NULL);
}
dev = canonicalize(tty->name);
dev = tty_canonicalize(tty->dev);
if (!dev) {
_d("%s: Cannot find TTY device: %s", tty->name, strerror(errno));
return;
_d("%s: Cannot find TTY device: %s", tty->dev, strerror(errno));
return EX_CONFIG;
}
if (tty_exist(dev)) {
if (!tty_exists(dev)) {
_d("%s: Not a valid TTY: %s", dev, strerror(errno));
return;
return EX_OSFILE;
}
if (tty->nologin) {
_d("%s: Starting /bin/sh ...", dev);
tty->pid = run_sh(dev, tty->noclear, tty->nowait, tty->rlimit);
return;
return run_sh(dev, tty->noclear, tty->nowait, tty->rlimit);
}
_d("%s: Starting %sgetty ...", dev, !tty->cmd ? "built-in " : "");
if (!tty->cmd)
tty->pid = run_getty(dev, tty->baud, tty->term, tty->noclear, tty->nowait, tty->rlimit);
else
tty->pid = run_getty2(dev, tty->cmd, tty->args, tty->noclear, tty->nowait, tty->rlimit);
}
if (!strcmp(tty->cmd, "tty"))
return run_getty(dev, tty->baud, tty->term, tty->noclear, tty->nowait, tty->rlimit);
void tty_stop(struct tty *tty)
{
if (!tty->pid)
return;
for (i = 1, j = 0; i < MAX_NUM_SVC_ARGS; i++) {
if (!tty->args[i][0])
break;
/*
* XXX: TTY handling should be refactored to regular services,
* XXX: that way we could rely on the state machine to properly
* XXX: send SIGTERM, wait for max 2 sec to collect PID before
* XXX: sending SIGKILL.
*/
_d("Stopping TTY %s", tty->name);
kill(tty->pid, SIGKILL);
waitpid(tty->pid, NULL, 0);
tty->pid = 0;
}
int tty_enabled(struct tty *tty)
{
if (!tty)
return 0;
if (ISSET(tty->runlevels, runlevel))
return 1;
return 0;
}
/*
* Fallback shell if no TTYs are active
*/
int tty_fallback(pid_t lost)
{
#ifdef FALLBACK_SHELL
if (lost == 1) {
if (fallback) {
kill(fallback, SIGKILL);
fallback = 0;
}
return 0;
args[j++] = tty->args[i];
}
args[j++] = NULL;
if (fallback != lost || tty_num_active())
return 0;
fallback = fork();
if (fallback)
return 1;
/*
* Become session leader and set controlling TTY
* to enable Ctrl-C and job control in shell.
*/
setsid();
ioctl(STDIN_FILENO, TIOCSCTTY, 1);
prctl(PR_SET_NAME, "finitsh", 0, 0, 0);
_exit(execl(_PATH_BSHELL, _PATH_BSHELL, NULL));
#else
(void)lost;
#endif /* FALLBACK_SHELL */
return 0;
}
static void tty_action(struct tty *tty)
{
if (!tty_enabled(tty))
tty_stop(tty);
else
tty_start(tty);
}
/*
* TTY monitor, called by service_monitor()
*/
int tty_respawn(pid_t pid)
{
struct tty *tty = tty_find_by_pid(pid);
if (!tty)
return tty_fallback(pid);
/* Set DEAD_PROCESS UTMP entry */
utmp_set_dead(pid);
/* Clear PID to be able to respawn it. */
tty->pid = 0;
tty_action(tty);
return 1;
}
/*
* Called after reload of /etc/finit.d/, stop/start TTYs
*/
void tty_reload(char *dev)
{
struct tty *tty;
if (dev) {
tty = tty_find(dev);
if (!tty) {
logit(LOG_WARNING, "No TTY registered for %s", dev);
return;
}
tty_action(tty);
tty->dirty = 0;
return;
}
tty_sweep();
LIST_FOREACH(tty, &tty_list, link) {
tty_action(tty);
tty->dirty = 0;
}
}
/* Start all TTYs that exist in the system and are allowed at this runlevel */
void tty_runlevel(void)
{
struct tty *tty;
LIST_FOREACH(tty, &tty_list, link)
tty_action(tty);
/* Start fallback shell if enabled && no TTYs */
tty_fallback(tty_num_active() > 0 ? 1 : 0);
return run_getty2(dev, tty->cmd, args, tty->noclear, tty->nowait, tty->rlimit);
}
/**
+19 -39
View File
@@ -25,52 +25,32 @@
#ifndef FINIT_TTY_H_
#define FINIT_TTY_H_
#include <limits.h>
#include <sys/resource.h>
#include <lite/queue.h> /* BSD sys/queue.h API */
#define TTY_MAX_ARGS 16
#define EVENT_SIZE ((sizeof(struct inotify_event) + NAME_MAX + 1))
#include <stdio.h>
#include "svc.h"
struct tty {
LIST_ENTRY(tty) link;
char *cmd;
char *args[MAX_NUM_SVC_ARGS];
size_t num;
char name[42];
char baud[10];
char term[10];
int noclear;
int nowait;
int nologin;
int runlevels;
char *cmd; /* NULL when running built-in getty */
char *args[TTY_MAX_ARGS];
int pid;
/* Limits and scoping */
struct rlimit rlimit[RLIMIT_NLIMITS];
/* Set if modified => reloaded, or -1 when marked for removal */
int dirty;
char *dev;
char *baud;
char *term;
char noclear;
char nowait;
char nologin;
char notty;
};
void tty_mark (void);
void tty_sweep (void);
char *tty_canonicalize (char *dev);
int tty_register (char *line, struct rlimit rlimit[], char *file);
int tty_unregister (struct tty *tty);
int tty_isatcon (char *dev);
char *tty_atcon (void);
struct tty *tty_find (char *dev);
size_t tty_num (void);
size_t tty_num_active (void);
struct tty *tty_find_by_pid (pid_t pid);
void tty_start (struct tty *tty);
void tty_stop (struct tty *tty);
int tty_enabled (struct tty *tty);
int tty_respawn (pid_t pid);
void tty_reload (char *dev);
void tty_runlevel (void);
int tty_parse_args (char *cmdline, struct tty *tty);
int tty_exists (char *dev);
int tty_exec (svc_t *tty);
#endif /* FINIT_TTY_H_ */
+283 -31
View File
@@ -26,18 +26,110 @@
#include <errno.h>
#include <regex.h>
#include <string.h>
#include <stdarg.h>
#include <stdlib.h>
#ifdef HAVE_TERMIOS_H
# include <termios.h>
#endif
#include <time.h>
#include <unistd.h>
#include <utmp.h>
#ifdef HAVE_SYS_IOCTL_H
# include <sys/ioctl.h>
#endif
#include <sys/sysinfo.h> /* sysinfo() */
#include <lite/lite.h> /* strlcat() */
#include "util.h"
int screen_rows = 24;
int screen_cols = 80;
char *prognm = NULL;
#ifdef HAVE_TERMIOS_H
/*
* This flag is used on *BSD when calling tcsetattr() to prevent it
* from changing speed, duplex, parity. GNU says we should use the
* CIGNORE flag to c_cflag, but that doesn't exist so ... we rely on
* our initial tcgetattr() and prey that nothing changes on the TTY
* before we exit and restore with tcsetattr()
*/
#ifndef TCSASOFT
#define TCSASOFT 0
#endif
static struct termios ttold;
static struct termios ttnew;
#endif
int ttrows = 24;
int ttcols = 80;
char *prognm = NULL;
static char *signames[] = {
"",
"HUP", /* 1 */
"INT",
"QUIT",
"ILL",
"TRAP",
"ABRT",
"BUS",
"FPE", /* 8 */
"KILL",
"USR1",
"SEGV",
"USR2",
"PIPE",
"ALRM",
"TERM",
"STKFLT", /* 16 */
"CHLD",
"CONT",
"STOP",
"TSTP",
"TTIN",
"TTOU",
"URG",
"XCPU", /* 24 */
"XFSZ",
"VTALRM",
"PROF",
"WINCH",
"IO",
"PWR",
"SYS",
};
/* https://freedesktop.org/software/systemd/man/systemd.exec.html#id-1.20.8 */
static char *exitcodes[] = {
"SUCCESS", /* 0: Std C exit OK */
"FAILURE", /* 1: Std C exit FAIL */
/* 2-7: LSB init scripts (usually) */
"INVALIDARGUMENT", /* 2: Invalid or excess args */
"NOTIMPLEMENTED", /* 3: Unimplemented feature, e.g. 'reload' */
"NOPERMISSION", /* 4: Insufficient privilege */
"NOTINSTALLED", /* 5: Program is not installed */
"NOTCONFIGURED", /* 6: Program is not configured */
"NOTRUNNING", /* 7: Program is not running */
"", "", "", "", "", "", "", "", /* 8-63: Not standardized */
"", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", /* 16-31 */
"", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", /* 32-47 */
"", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", /* 48-63 */
/* 64-78: BSD, from sysexit.h */
"USAGE", /* 64: Command line usage error */
"DATAERR", /* 65: data format error */
"NOINPUT", /* 66: cannot open input */
"NOUSER", /* 67: addressee unknown */
"NOHOST", /* 68: host name unknown */
"UNAVAILABLE", /* 69: service unavailable */
"SOFTWARE", /* 70: internal software error */
"OSERR", /* 71: system error (e.g., can't fork) */
"OSFILE", /* 72: critical OS file missing */
"CANTCREAT", /* 73: can't create (user) output file */
"IOERR", /* 74: input/output error */
"TEMPFAIL", /* 75: temp failure; user is invited to retry */
"PROTOCOL", /* 76: remote error in protocol */
"NOPERM", /* 77: permission denied */
"CONFIG", /* 78: configuration error */
/* 79-199: Not standardized, typically 127 == -1 */
/* >= 200: reserved (LSB), used by systemd */
};
char *progname(char *arg0)
{
@@ -50,30 +142,47 @@ char *progname(char *arg0)
return prognm;
}
int echo(char *file, int append, char *fmt, ...)
char *str(char *fmt, ...)
{
static char buf[32];
va_list ap;
va_start(ap, fmt);
vsnprintf(buf, sizeof(buf), fmt, ap);
va_end(ap);
return buf;
}
int fnwrite(char *value, char *fmt, ...)
{
char path[256];
va_list ap;
FILE *fp;
int rc;
if (!file)
fp = stdout;
else
fp = fopen(file, append ? "a" : "w");
if (!value) {
errno = EINVAL;
return -1;
}
va_start(ap, fmt);
vsnprintf(path, sizeof(path), fmt, ap);
va_end(ap);
fp = fopen(path, "w");
if (!fp)
return -1;
if (fmt) {
va_start(ap, fmt);
vfprintf(fp, fmt, ap);
va_end(ap);
}
/* echo(1) always adds a newline */
fprintf(fp, "\n");
if (file)
fclose(fp);
if (fputs(value, fp) == EOF || fputs("\n", fp) == EOF)
rc = -1;
if (fclose(fp) == EOF)
rc = -1;
else
rc = 0;
return 0;
return rc;
}
/*
@@ -115,6 +224,29 @@ int strtobytes(char *arg)
return bytes;
}
char *sig2str(int sig)
{
static char signame[8];
if (sig < 1 || sig >= (int)NELEMS(signames))
return "";
snprintf(signame, sizeof(signame), "/%s", signames[sig]);
return signame;
}
char *code2str(int code)
{
static char codename[20];
if (code < 0 || code >= (int)NELEMS(exitcodes))
return "";
snprintf(codename, sizeof(codename), "/%s", exitcodes[code]);
return codename;
}
void do_sleep(unsigned int sec)
{
struct timespec requested_sleep = {
@@ -176,6 +308,32 @@ char *uptime(long secs, char *buf, size_t len)
return buf;
}
char *memsz(uint64_t sz, char *buf, size_t len)
{
int gb, mb, kb, b;
if (!sz) {
strlcpy(buf, "--.--", len);
return buf;
}
gb = sz / (1024 * 1024 * 1024);
sz = sz % (1024 * 1024 * 1024);
mb = sz / (1024 * 1024);
sz = sz % (1024 * 1024);
kb = sz / (1024);
b = sz % (1024);
if (gb)
snprintf(buf, len, "%d.%dG", gb, mb / 102);
else if (mb)
snprintf(buf, len, "%d.%dM", mb, kb / 102);
else
snprintf(buf, len, "%d.%dk", kb, b / 102);
return buf;
}
/*
* Verify string argument is NUL terminated
* Verify string is a JOB[:ID], JOB and ID
@@ -187,7 +345,7 @@ char *sanitize(char *arg, size_t len)
regex_t preg;
int rc;
if (strlen(arg) > len)
if (!memchr(arg, 0, len))
return NULL;
if (regcomp(&preg, regex, REG_ICASE | REG_EXTENDED))
@@ -201,28 +359,122 @@ char *sanitize(char *arg, size_t len)
return arg;
}
#ifdef HAVE_TERMIOS_H
/*
* Called at boot, and shutdown, to (re)initialize the
* screen size for print() et al.
* Called by initctl, and by finit at boot and shutdown, to
* (re)initialize the screen size for print() et al.
*/
void screen_init(void)
int ttinit(void)
{
if (!isatty(STDOUT_FILENO))
return;
struct pollfd fd = { STDIN_FILENO, POLLIN, 0 };
struct winsize ws = { 0 };
struct termios tc, saved;
int cached = 0;
initscr(&screen_rows, &screen_cols);
/*
* Basic TTY init, CLOCaL is important or TIOCWINSZ will block
* until DCD is asserted, and we won't ever get it.
*/
if (!tcgetattr(STDERR_FILENO, &tc)) {
saved = tc;
cached = 1;
tc.c_cflag |= (CLOCAL | CREAD);
tc.c_lflag &= ~(ICANON | ECHO | ECHOE | ISIG);
tcsetattr(STDERR_FILENO, TCSANOW, &tc);
}
/* 1. Try TIOCWINSZ to query window size from kernel */
if (!ioctl(STDOUT_FILENO, TIOCGWINSZ, &ws)) {
ttrows = ws.ws_row;
ttcols = ws.ws_col;
/* Likely doesn't work in PID 1 after kernel starts us ... */
if (!ws.ws_row && !ws.ws_col)
goto fallback;
} else if (!isatty(STDOUT_FILENO)) {
/* 2. We may be running under watch(1) */
ttcols = atonum(getenv("COLUMNS"));
ttrows = atonum(getenv("LINES"));
} else {
fallback:
/* 3. ANSI goto + query cursor position trick as fallback */
fprintf(stderr, "\e7\e[r\e[999;999H\e[6n");
if (poll(&fd, 1, 300) > 0) {
int row, col;
if (scanf("\e[%d;%dR", &row, &col) == 2) {
ttcols = col;
ttrows = row;
}
}
/* Jump back to where we started (\e7) */
fprintf(stderr, "\e8");
}
if (cached)
tcsetattr(STDERR_FILENO, TCSANOW, &saved);
/* Sanity check */
if (ttcols <= 0)
ttcols = 80;
if (ttrows <= 0)
ttrows = 24;
return ttcols;
}
/*
* Called when debug mode is enabled to revert back
* to old-school safe defaults.
* This function sets the terminal to RAW mode, as defined for the current
* shell. This is called both by ttopen() above and by spawncli() to
* get the current terminal settings and then change them to what
* mg expects. Thus, tty changes done while spawncli() is in effect
* will be reflected in mg.
*/
void screen_exit(void)
int ttraw(void)
{
screen_rows = 24;
screen_cols = 80;
if (tcgetattr(0, &ttold) == -1) {
fprintf(stderr, "%s: failed querying tty attrs: %s\n",
prognm, strerror(errno));
return 1;
}
(void)memcpy(&ttnew, &ttold, sizeof(ttnew));
/* Set terminal to 'raw' mode and ignore a 'break' */
ttnew.c_cc[VMIN] = 1;
ttnew.c_cc[VTIME] = 0;
ttnew.c_iflag |= IGNBRK;
ttnew.c_iflag &= ~(BRKINT | PARMRK | INLCR | IGNCR | ICRNL | IXON);
ttnew.c_oflag &= ~OPOST;
ttnew.c_lflag &= ~(ECHO | ECHONL | ICANON | IEXTEN);
if (tcsetattr(0, TCSASOFT | TCSADRAIN, &ttnew) == -1) {
fprintf(stderr, "%s: failed setting tty in raw mode: %s\n",
prognm, strerror(errno));
return 1;
}
return 0;
}
/*
* This function restores all terminal settings to their default values,
* in anticipation of exiting or suspending the editor.
*/
int ttcooked(void)
{
if (tcsetattr(0, TCSASOFT | TCSADRAIN, &ttold) == -1) {
fprintf(stderr, "%s: failed restoring tty to cooked mode: %s\n",
prognm, strerror(errno));
return 1;
}
return 0;
}
#endif /* HAVE_TERMIOS_H */
/**
* Local Variables:
* indent-tabs-mode: t
+36 -9
View File
@@ -25,9 +25,10 @@
#define FINIT_UTIL_H_
#include "config.h"
#ifdef HAVE_TERMIOS_H /* for screen_width() */
#ifdef HAVE_TERMIOS_H
#include <poll.h>
#include <stdio.h>
#include <stdarg.h>
#include <sys/reboot.h>
#include <termios.h>
#endif
@@ -37,27 +38,53 @@
#define RB_SW_SUSPEND 0xd000fce2
#endif
extern int screen_rows;
extern int screen_cols;
extern int debug; /* defined in finit or initctl */
extern int ttrows;
extern int ttcols;
extern char *prognm;
#define SCREEN_WIDTH screen_cols
/* Define for printheader() from conio.h, used in initctl */
#define SCREEN_WIDTH ttcols
#include <lite/conio.h>
char *progname (char *arg0);
int echo (char *file, int append, char *fmt, ...);
char *str (char *fmt, ...);
int fnwrite (char *value, char *fmt, ...);
int has_utmp (void);
int strtobytes (char *arg);
void do_sleep (unsigned int sec);
char *sig2str (int sig);
char *code2str (int code);
void do_sleep (unsigned int sec);
long jiffies (void);
char *uptime (long secs, char *buf, size_t len);
char *memsz (uint64_t sz, char *buf, size_t len);
char *sanitize (char *arg, size_t len);
void screen_init (void);
void screen_exit (void);
int screen_width (void);
#ifdef HAVE_TERMIOS_H
int ttinit (void);
int ttraw (void);
int ttcooked (void);
#else
#define ttinit() ttcols
#define ttraw() 0
#define ttcooked() 0
#endif
static inline void dbg(char *fmt, ...)
{
va_list ap;
if (!debug)
return;
va_start(ap, fmt);
vfprintf(stderr, fmt, ap);
va_end(ap);
}
static inline char *strterm(char *str, size_t len)
{
+5 -61
View File
@@ -35,6 +35,9 @@
#define MAX_NO 5
#define MAX_SZ 100 * 1024
extern int logrotate(char *file, int num, off_t sz);
static void utmp_strncpy(char *dst, const char *src, size_t dlen)
{
size_t i;
@@ -46,65 +49,6 @@ static void utmp_strncpy(char *dst, const char *src, size_t dlen)
dst[i] = 0;
}
#ifdef LOGROTATE_ENABLED
/*
* This function triggers a log rotates of @file when size >= @sz bytes
* At most @num old versions are kept and by default it starts gzipping
* .2 and older log files. If gzip is not available in $PATH then @num
* files are kept uncompressed.
*/
static int logrotate(char *file, int num, off_t sz)
{
int cnt;
struct stat st;
if (stat(file, &st))
return 1;
if (sz > 0 && S_ISREG(st.st_mode) && st.st_size > sz) {
if (num > 0) {
size_t len = strlen(file) + 10 + 1;
char ofile[len];
char nfile[len];
/* First age zipped log files */
for (cnt = num; cnt > 2; cnt--) {
snprintf(ofile, len, "%s.%d.gz", file, cnt - 1);
snprintf(nfile, len, "%s.%d.gz", file, cnt);
/* May fail because ofile doesn't exist yet, ignore. */
(void)rename(ofile, nfile);
}
for (cnt = num; cnt > 0; cnt--) {
snprintf(ofile, len, "%s.%d", file, cnt - 1);
snprintf(nfile, len, "%s.%d", file, cnt);
/* May fail because ofile doesn't exist yet, ignore. */
(void)rename(ofile, nfile);
if (cnt == 2 && fexist(nfile)) {
size_t len = 5 + strlen(nfile) + 1;
char cmd[len];
snprintf(cmd, len, "gzip %s", nfile);
run(cmd);
remove(nfile);
}
}
(void)rename(file, nfile);
create(file, st.st_mode, st.st_uid, st.st_gid);
} else {
truncate(file, 0);
}
}
return 0;
}
#endif /* LOGROTATE_ENABLED */
/*
* Rotate /var/log/wtmp (+ btmp?) and /run/utmp
*
@@ -194,13 +138,13 @@ static int set_getty(int type, char *tty, char *id, char *user)
return 0;
if (!tty)
line = "";
line = NULL;
else if (!strncmp(tty, "/dev/", 5))
line = tty + 5;
else
line = tty;
if (!id) {
if (!id && line) {
id = line;
if (!strncmp(id, "pts/", 4))
id += 4;
+18 -14
View File
@@ -23,6 +23,8 @@
#include <config.h>
#include <stdio.h>
#include <string.h>
#include <sysexits.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
@@ -58,7 +60,7 @@ static int init(char *progname, char *devnode)
signal(SIGPWR, sighandler);
openlog(&progname[1], LOG_CONS | LOG_PID, LOG_DAEMON);
syslog(LOG_INFO, "Finit v%s basic watchdogd starting ...", VERSION);
syslog(LOG_INFO, "Finit v%s watchdog %s starting ...", VERSION, devnode);
fd = open(devnode, O_WRONLY);
if (fd == -1)
@@ -89,36 +91,38 @@ static int loop(int fd, int timeout)
if (handover) {
syslog(LOG_INFO, "Handing over %s and exiting ...", WDT_DEVNODE);
ioctl(fd, WDIOC_KEEPALIVE, &dummy);
return !write(fd, "V", 1);
}
if (write(fd, "V", 1) == -1)
return EX_IOERR;
} else
syslog(LOG_ALERT, "System going down ...");
return 0;
return EX_OK;
}
int main(int argc, char *argv[])
{
int fd, ret;
int fd, rc = EX_OK;
fd = init(argv[0], WDT_DEVNODE);
if (fd == -1) {
if (ENOENT != errno)
syslog(LOG_CRIT, "Failed connecting to watchdog %s", WDT_DEVNODE);
return 1;
syslog(LOG_CRIT, "Failed connecting to %s: %s", WDT_DEVNODE, strerror(errno));
rc = EX_OSFILE;
goto done;
}
ret = loop(fd, WDT_TIMEOUT);
rc = loop(fd, WDT_TIMEOUT);
while (!handover) {
syslog(LOG_ALERT, "System going down ...");
/* Waiting for SIGTERM ... */
/* Waiting for SIGTERM or WDT reset ... */
sleep(1);
/* Set lowest possible timeout on SIGTERM */
/* Set lowest possible timeout on SIGPWR */
ioctl(fd, WDIOC_SETTIMEOUT, &shutdown);
}
close(fd);
done:
closelog();
return ret;
return rc;
}
/**
+2 -6
View File
@@ -23,15 +23,11 @@
#include "config.h" /* Generated by configure script */
#ifndef WDT_DEVNODE
#define WDT_DEVNODE "/dev/watchdog"
#endif
#define WDT_TIMEOUT 30
#ifdef BUILTIN_WATCHDOG
int watchdog(char *progname);
#else
#define watchdog(progname) 0
#endif /* BUILTIN_WATCHDOG */
/**
* Local Variables:
* indent-tabs-mode: t
+3 -4
View File
@@ -3,7 +3,6 @@ EXTRA_DIST += tenv/root.mk tenv/busybox-x86_64.md5
EXTRA_DIST += tenv/chrootsetup.sh
EXTRA_DIST += setup-root.sh
EXTRA_DIST += common/service.conf common/service.sh
EXTRA_DIST += checkself.sh
EXTRA_DIST += add-remove-dynamic-service.sh
EXTRA_DIST += add-remove-dynamic-service-sub-config.sh
EXTRA_DIST += start-stop-service.sh
@@ -16,9 +15,9 @@ AM_TESTS_ENVIRONMENT += top_builddir=$(top_builddir);
AM_TESTS_ENVIRONMENT += export top_builddir;
checkself.sh:
echo '#!/bin/sh' > $@
echo shellcheck $(addprefix '"$$srcdir"'/,$(filter %.sh,$(filter-out $@, $(EXTRA_DIST)))) >> $@
chmod +x $@
@echo '#!/bin/sh' > $@
@echo shellcheck $(addprefix '"$$srcdir"'/,$(filter %.sh,$(filter-out $@, $(EXTRA_DIST)))) >> $@
@chmod +x $@
TEST_EXTENSIONS = .sh
TESTS = checkself.sh