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Author SHA1 Message Date
Joachim Nilsson 44137806e4 Basic support for cpuset cgroup config and process assignment
Signed-off-by: Joachim Nilsson <troglobit@gmail.com>
2019-05-14 10:18:45 +02:00
229 changed files with 6752 additions and 12667 deletions
-3
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@@ -1,3 +0,0 @@
# These are supported funding model platforms
github: [troglobit]
-12
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@@ -1,12 +0,0 @@
# Security Policy
## Supported Versions
finit is a small project, as such we have no possibility to support older versions.
The only supported version is the latest released on GitHub:
<https://github.com/troglobit/finit/releases>
## Reporting a Vulnerability
Contact the project's main author and owner to report and discuss vulnerabilities.
-5
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@@ -9,13 +9,11 @@ GSYMS
GTAGS
# GNU configure and build system
/aux
/.deps
/autom4te.cache
/aclocal.m4
/ar-lib
/compile
/config.cache
/config.h
/config.mk
/config.guess
@@ -33,9 +31,6 @@ GTAGS
/Makefile.in
/stamp-h1
/test-driver
/test-suite.log
# TroglOS build system
/.config
/.stamp
+22 -25
View File
@@ -5,17 +5,18 @@ 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)
# - clang
compiler:
- gcc
- clang
# The secure: declaration is the encrypted COVERITY_SCAN_TOKEN, created
# via the "travis encrypt" command using the project repo's public key
env:
global:
- PKG_CONFIG_PATH=/tmp/lib/pkgconfig
- CFLAGS="-W -Wall -Wextra"
# The next declaration is the encrypted COVERITY_SCAN_TOKEN, created
# via the "travis encrypt" command using the project repo's public key
- secure: "eOiuHs02lG2Uv146K9dMqucGTWUJFEhpz1oAtwe+kPrRXsXWc20hYMO+DSpMgD05vSvNeQA6p7h7LdRFQ+/g/Obj27TsOE+RKkUvRAtdwzxnKVyii9C/nmML8cFw7rIA0VS8O9mAkVYeyDxNDupBp3e9DPCibhKPvqCvioTnyy4="
addons:
@@ -27,36 +28,32 @@ addons:
name: "troglobit/finit"
description: "finit | Fast & Extensible init for Linux"
notification_email: troglobit@gmail.com
build_command_prepend: "./autogen.sh && ./configure --prefix= --disable-doc --disable-contrib --with-watchdog"
build_command_prepend: "./autogen.sh && PKG_CONFIG_PATH=/tmp/lib/pkgconfig ./configure --prefix=/tmp"
build_command: "make"
branch_pattern: dev
install:
- wget https://github.com/troglobit/libuev/releases/download/v2.3.2/libuev-2.3.2.tar.xz
- wget https://github.com/troglobit/libite/releases/download/v2.3.1/libite-2.3.1.tar.gz
- tar xf libuev-2.3.2.tar.xz
- tar xf libite-2.3.1.tar.gz
- (cd libuev-2.3.2 && ./configure --prefix=/tmp && make && make install-strip)
- (cd libite-2.3.1 && ./configure --prefix=/tmp && make && make install-strip)
- wget https://github.com/troglobit/libuev/releases/download/v2.2.0/libuev-2.2.0.tar.xz
- wget https://github.com/troglobit/libite/releases/download/v2.0.1/libite-2.0.1.tar.xz
- tar xf libuev-2.2.0.tar.xz
- tar xf libite-2.0.1.tar.xz
- (cd libuev-2.2.0 && ./configure --prefix=/tmp && make && make install-strip)
- (cd libite-2.0.1 && ./configure --prefix=/tmp && make && make install-strip)
# Custom build script for the time being, no "make test" yet
script:
- ./autogen.sh
- ./configure --prefix= --enable-static
- PKG_CONFIG_PATH=/tmp/lib/pkgconfig ./configure --prefix=/tmp --disable-inetd --enable-static
- make clean
- make V=1 -j5
- ./configure --prefix= --enable-x11-common-plugin --with-watchdog --with-keventd
- PKG_CONFIG_PATH=/tmp/lib/pkgconfig ./configure --prefix=/tmp --enable-inetd-echo-plugin --enable-inetd-time-plugin --enable-x11-common-plugin --enable-inetd-chargen-plugin --enable-fallback-shell --enable-watchdog
- cat config.log
- make clean
- make V=1 -j5
- 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
- 'LD_LIBRARY_PATH=/tmp/lib make distcheck || (cat finit-4.0-beta1/_build/sub/test/test-suite.log; exit 1)'
- 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
+1 -3
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@@ -1,12 +1,10 @@
Current Maintainer(s):
* Joachim Wiberg <troglobit@gmail.com>
* Joachim Nilsson <troglobit@gmail.com>
Major Contributors:
* Tobias Waldekranz <tobias@waldekranz.com>
* Mattias Walström <mattias.walstrom@westermo.se>
* Jonas Johansson <jonas.johansson@westermo.se>
* Jacques de Laval <jacques@de-laval.se>
* Magnus Malm <magnusmalm@gmail.com>
Original Author(s):
* Claudio Matsuoka <cmatsuoka@gmail.com>
+34 -224
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@@ -4,167 +4,14 @@ Change Log
All relevant changes are documented in this file.
[4.1][] - 2021-06-06
--------------------
[3.2][UNRELEASED] - 2018-10-xx
------------------------------
Bug fix release. Also disables handlers for `SIGINT` and `SIGPWR`, a
new set of `sys` conditions are instead generated which can be used to
trigger external programs.
Bug fix release.
### Changes
* Change behavior on SIGUSR1 to be compatible with sysvinit and systemd.
Previously SIGUSR1 caused Finit to halt, like BusyBox init. This had
"interesting" side effects on Debian systems when coexisting with
sysvinit (upgrading/reinstalling causes scripts to `kill -USR1 1`)
* Change how `contrib/debian/install.sh` sets up a Grub boot entry for
finit. We now modify the $SUPPORTED_INITS variable in `10_linux`
* Disable default kernel ctrl-alt-delete handler and let Finit instead
catch `SIGINT` from kernel to be able to perform a proper reboot.
There is no default command for this, you need to set up a task that
triggers on `<sys/key/ctrlaltdel>` to issue `initctl reboot`
* Added keventd to provide `<sys/pwr/ac>` condition to Finit. keventd
is currently only responsible for monitoring `/sys/class/power_supply`
for changes to active AC mains power online status. Enable keventd
with `configure --with-keventd`
* For handling power fail events (from UPS and similar) a process may
send `SIGPWR` to PID 1. Finit no longer redirects this to `SIGUSR1`
(poweroff). There is no default command for this, you need to set up
a task that triggers on `<sys/pwr/fail>` to issue `initctl poweroff`
* Built-in Finit getty is now a standalone program
* Default termios for TTYs now enable `IUTF8` on input
* If `/bin/login` is not found, Finit now tries `sulogin` before it
falls back to an unauthenticated `/bin/sh`
* Dropped (broken) support for multiple consoles. Finit now follows
the default console selected by the kernel, `/dev/console`
* Dropped signal handlers for SIGSTOP/TSTP and SIGCONT
* Added support for `\n`, in addition to `\r`, in "Please press Enter"
prompt before starting getty
* Finit no longer parses `/proc/cmdline` for its options. Instead all
options are by default now read from `argv[]`, like a normal program,
this is also what the kernel does by default. Please note, this may
not work if your systems boots with an initramfs (ymmv), for such
cases, see `configure --enable-kernel-cmdline`
* The following plugins are now possible to disable (for containers):
`rtc.so`, `urandom.so`, you may also want to disable `hotplug.so`.
They are all enabled by default, as in Finit 4.0, but may be moved
to external tools or entries in `finit.conf` in Finit 5.0
* Added support for reading `PRETTY_NAME` from `/etc/os-release` to use
as heading in progress output, unless `--with-heading=GREET` is used.
* Added manual pages for finit(8), initctl(8), and finit.conf(5)
### Fixes
* Stricter interface name validation in netlink plugin, modeled after
the kernel. Suggested by Coverity Scan
* Fix problem of re-registering a service as a task. Previously, if a
fundamental change, like type, was made to an active service/run/task
it did not take. Only possible workaround was to remove from config
* initctl: drop warning when removing a non-existing usr condition
* initctl: drop confusing `errno 0` when timing out waiting for reply
* Ensure services in plugins and from Finit main belong to a cgroup
* Ensure init top-level cgroup remains a leaf group
* Fix tty parse error for detecting use of external getty
* Fix default `name:` and `:ID` for tty's, e.g. `ttyS0` now gives
`tty:S0` as expected. This was default for built-in getty already
* Fix max username (32 chars) in bundled Finit getty
* The `contrib/*/install.sh` scripts failed to run from tarball
* Finit no longer forcibly mounts; `/dev`, `/proc`, or `/sys`, instead
it checks first if they are already mounted (devtmpfs or container)
* Fix `/etc/fstab` parser to properly check for 'ro' to not remount the
root filesystem at boot. The wrong field was read, so a root mounted
by an initramfs, or by lxc for a container, had their root remounted
* Fix SIGCHLD handler, `waitpd()` may be interrupted by a signal
* Reset `starting` flag of services being stopped. When a service
is started and then stopped before it has created its pid file,
it could be left forever in the stopping state, unless we reset
the starting flag.
* Fix #170: detect loss of default route when interfaces go down. This
emulates the missing kernel netlink message to remove the condition
net/default/route to allow stopping dependent services
* Fix #171: restore automatic mount of `/dev/shm`, `/dev/pts`, `/run`
and `/tmp`, unless mounted already by `/etc/fstab`. This is what most
desktop systems expect PID 1 to do. Here we also make sure to mount
`/run/lock` as a tmpfs as well, with write perms for regular users,
this prevents regular users from filling up `/run` and causing DoS.
* Fix #173: netlink plugin runs out of socket buffer space;
finit[1]: nl_callback():recv(): No buffer space available
Fixed by adding support for resync with kernel on `ENOBUFS`. See
netlink(7) for details. As a spin-off the plugin now supports any
number of interfaces and routes on a system. On resync, the following
message is now logged, as a warning:
finit[1]: nl_callback():busy system, resynchronizing with kernel.
* Fix #174: loss of log messages using combo of prio and facility, e.g.,
`logit(LOG_CONSOLE | LOG_NOTICE, ...)`, by Jacques de Laval, Westermo
* Fix #175: ensure Finit does not acquire a controlling TTY when checking
if a device is a TTY before starting a getty. This fixes an old bug
where Ctrl-C after logout from a shell could cause PID 1 to get SIGINT,
which in turn could lead to a system reboot
[4.0][] - 2021-04-26
--------------------
This release became v4.0, and not v3.2, because of incompatible changes
to service conditions. There are other significant changes as well, so
make sure to read the whole change log when upgrading.
### Changes
* The stand-alone `reboot` tool has been replaced with a symlink to
`initctl`, like its siblings: halt, shutdown, poweroff, and suspend.
Calling `reboot` & C:o now defaults to the corresponding `initctl cmd`
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!
* Incompatible `configure` script changes, i.e., no guessing `--prefix`
and other paths. Also, many options have been changed, renamed, or
flipped defaults, or even dropped altogether. There are examples in
the documentation and the `contrib/` section
* Service conditions change from the non-obvious `<svc/path/to/foo>` to
`<pid/foo:id>`. Not only does this give simpler internal semantics,
it hopefully also makes it clear that one service's `pid:!foo` pidfile
is another service's `<pid/foo>` condition, issue #143
* Initial support for cgroups v2:
- services runs in a cgroup named after their respective *.conf file
- top-level groups are; init, user, and system
- all top-level groups can be configured from finit *.conf files
- each service can tweak the cgroup settings
- Use `initctl [top|ps|cgroup]` commands to inspect runtime state
- https://twitter.com/b0rk/status/1214341831049252870?s=20
* Major refactor of Finit's `main()` function to be able to start the
event loop earlier. This also facilitated factoring out functionality
previously hard-coded in Finit, e.g., starting the bundled watchdogd,
various distro packed udevd and other hotplugging tools
* A proper rescue mode has been added. It is started extremely early
and is protected with a bundled `suslogin`. Exiting rescue mode now
brings up the system as a normal boot, as one expects
* Support for `sysv` start/stop scripts as well as monitoring forking
services, stared using `sysv` or `service` stanza
* Support for custom `kill:DELAY`, default 3 sec.
* Support for custom `halt:SIGNAL`, default SIGTERM
* Support for `pre:script` and `post:script`, allows for setup and
teardown/cleanup before and after a service runs, issue #129
* Support for `env:file` in `/etc/default/foo` or `/etc/conf.d/foo`, see
the contrib section for examples that utilize this feature. Variables
expanded from env files, and the env files themselves, are tracked for
changes to see if a service .conf file is "dirty" and needs restart on
`initctl reload`
* Support for tracking custom PID files, using `pid:!/path/to/foo.pid`,
useful with new `sysv` or `service` which fork to background
* Support starting run/task/services without absolute path, trust `$PATH`
* Add support for `--disable-doc` and `--disable-contrib` to speed up
* Add support for `--disable-docs` and `--disable-contrib` to speed up
builds and work around issue with massively parallel builds
* Support for `@console` also for external getty
* Support for `notty` option to built-in getty, for board bring-up
* Support for `rescue` option to built-in getty, for rescue shells
* Add `-b`, batch mode, for non-interactive use to `initctl`
* Prefer udev to handle `/dev/` if mdev is also available
* Redirect dbus daemon output to syslog
@@ -172,7 +19,7 @@ make sure to read the whole change log when upgrading.
* Finit no longer automatically reloads its `*.conf` files after running
`/etc/rc.local` or run-parts. Use `initctl reload` instead.
* `initctl` without an argument or option now defaults to list services
* Convert built-in watchdog daemon to standalone mini watchdogd, issue #102
* Converted built-in watchdog daemon to standalone mini watchdogd
* Improved watchdog hand-over, now based on `svc_t` and not PID
* Extended bootstrap, runlevel S, timeout: 10 --> 120 sec. before services
not allowed in the runtime runlevel are unconditionally stopped
@@ -187,71 +34,37 @@ make sure to read the whole change log when upgrading.
the kernel can invalidate deleted events before enqueing to userspace
* Rename `hwclock.so` plugin to `rtc.so` since it now is stand-alone
from the `hwclock` tool. Note: the kernel can also be set to load
and store RTC to/from system clock at boot/halt as well, issue #110
* New plugin to support cold plugging devices, auto-loading of modules
at boot. Detects required modules by reading `/sys/devices/*`
* New plugin for `/etc/modules-load.d/` by Robert Andersson, Atlas Copco
* New `name:foo` support for services, by Robert Andersson, Atlas Copco
* New `manual:yes` support for services, by Robert Andersson, Atlas Copco
* New `log:console` support for services, by Robert Andersson, Atlas Copco
* Support for `:ID` as a string, by Jonas Johansson, Westermo
* Support for auto-reload, instead of having to do `initctl reload`,
when a service configuration has changed. Disabled by default, but
can be enabled with `./configure --enable-auto-reload`
* Support for logging security related events, e.g., runlevel change,
star/stop or failure to start services, by Jonas Holmberg, Westermo
* Mount devtpts with recommended `ptxmode=0666`
* Mount /run tmpfs with nosuid,nodev,noexec for added security
* Support for `console` as alias for `@console` in tty stanzas
* Drop `--enable-rw-roots` configure option, use `rw` for your `/`
partition in `/etc/fstab` instead to trigger remount at boot
* Drop default tty speed (38400) and use 0 (kernel default) instead
* Make `:ID` optional, use NULL/zero internally this allows ...
* Handle use-cases where multiple services share the same PID filem
and thus the same condition path, e.g. different instances for
different runlevels. Allow custom condition path with `name:foo`
syntax, creates conditions w/o a path, and ...
* Always append `:ID` qualifier to conditions if set for a service
* The IPC socket has moved from `/run/finit.sock` to `/run/finit/socket`
officially only supported for use by the `initctl` tool
* The IPC socket now uses `SOCK_SEQPACKET` instead of `SOCK_STREAM`.
Recommend using watchdogd v3.4, or later, which support this
* Improved support for modern `/etc/network/interfaces`, which has
include statements. No more native `ifup` of individual interfaces,
Finit now calls `ifup -a`, or `ifdown -a`, delegating all details to
the operating system. Also, this is now done in the background, by
popular request
and store RTC to/from system clock at boot/halt as well.
### Fixes
* Fix #96: Start udevd as a proper service
* Ensure we track run commands as well as task/service, once per runlevel
* Fix #98: FTBFS with `--disable-inetd`
* Make sure to unblock UDP inetd services when connection terminates.
Regression introduced in v3.1
* Ensure run/tasks also go to stopping state on exit, like services,
otherwise it is unnecessarily hard to restart them
* Fix #99: Do not try to `SIGKILL` inetd services, they are not backed
by a PID. This caused a use after free issue crashing finit. Found
and fixed by Tobias Waldekranz, Westermo
* Fix missing OS/Finit title bug, adds leading newline before banner
* Remove "Failed connecting to watchdog ..." error message on systems
that do not have a watchdog
* Fix #100: Early condition handling may not work if `/var/run` does
not yet exist (symlink to `/run`). Added compat layer for access
* Fix #101: Built-in inetd removed
* Fix #102: Start built-in watchdogd as a regular service
* Fix #103: Register multiple getty if `@console` resolves to >1 TTY,
* Fix #103: Register multiple getty if `@console` resolves to >1 TTY
* Fix #105: Only remove /etc/nologin when moving from runlevel 0, 1, 6
* Fix #106: Don't mark inetd connections for deletion at .conf reload.
Fixed by Jonas Johansson, Westermo
* Fix #109: Support for PID files in sub-directories to `/var/run`
* Handle rename of PID files, by Robert Andersson, Atlas Copco
* Fix #110: automatic modprobe of RTC devices, built-in hwclock
* Fix #120: Redirect `stdin` to `/dev/null` for services by default
* Fix #122: Switch to `nanosleep()` to achieve "signal safe" sleep,
fixed by Jacques de Laval, Westermo
* Fix #124: Lingering processes in process group when session leader
exits. E.g., lingering `logit` processes when parent dies
* Fix #127: Show all runparts scripts as they start, like rc.local, fixed
by Jacques de Laval, Westermo
* Fix service name matching, e.g. for condition handling, may match with
wrong service, by Jonas Holmberg, Westermo
* Run all run-parts scripts using `/bin/sh -c foo` just like the standard
run-parts tool. Found by Magnus Malm, Westermo
* Fix #107: Stop spawned inetd conncections when stopping inetd service.
Fixed by Jonas Johansson, Westermo
* Fix #111: Only restart inetd services when necessary. E.g., if the
listening interface is changed. Only stop established connections
which are no longer allowed, i.e. do not touch already allowed
established connections. Fixed by Jonas Johansson, Westermo
* Fix: update inetd service args on config change. Found and fixed by
Petrus Hellgren, Westermo
* Fix `initctl [start | restart]`, should behave the same for services
that have crashed. Found by Mattias Walström, Westermo
* Wait for bootstrap phase to complete before cleaning out any bootstrap
@@ -259,15 +72,7 @@ make sure to read the whole change log when upgrading.
* Reassert condition when an unmodified run/task/service goes from
WAITING back to RUNNING again after a reconfiguration event.
Found and fixed by Jonas Johansson, Westermo
* Restore Ctrl-D and Ctrl-U support in built-in getty
* Remove service condition when service is deleted
* Fix C++ compilation issues, by Robert Andersson, Atlas Copco
* Build fixes for uClibc
* Provide service description for built-in watchdog daemon
* Fix #138: Handle `SIGPWR` like `SIGSUR2`, i.e., power off the system
* Drop the '%m' GNUism, for compat with older musl libc
* Fix #139: call `tzset()` on `initctl reload` to activate system
timezone changes (for logging)
[3.1][] - 2018-01-23
@@ -342,7 +147,7 @@ This version requires at least libuEv v2.1.0 and libite v2.0.1
possibility of running a second stage mount command before files in
`/run` and similar are created
* Skip `gdbserver` when unleashing the grim reaper at shutdown
* Distribute and install `doc/` and `contrib/` directories
* Distribute and install `docs/` and `contrib/` directories
### Fixes
@@ -405,7 +210,7 @@ distributions.
* Ensure plugins always have a default name, file name
* Reorganization, move all source files to a `src/` sub-directory
* Add support for `initctl <list|enable|disable> <SVC>`, much needed by
distributions. See [doc/distro.md](doc/distro.md) for details
distributions. See [docs/distro.md](docs/distro.md) for details
* Remove `UNUSED()` macro, mentioned here because it may have been used
by external plugin developers. Set `-Wno-unused-parameter` instead
* New table headings in `initctl`, using `top` style inverted text
@@ -876,14 +681,14 @@ Major bug fix release.
* Makefile fixes for installation, paths encoded wrong
* Strip binaries + .so files, support for `$(CROSS)` toolchain strip
* Default install is now to `/sbin/finit` and `/usr/`
* Note change in `$PLUGIN_DIR` environment variable to `$plugindir`
* Note change in `$PLUGIN_DIR` environemnt variable to `$plugindir`
[1.2][] - 2012-09-27
--------------------
### Changes
* Update README with section on building and environment variables
* Update README with section on building and enviroment variables
### Fixes
* Fix installation paths encoded in finit binary
@@ -975,9 +780,8 @@ Major bug fix release.
* Initial release
[UNRELEASED]: https://github.com/troglobit/finit/compare/4.0...HEAD
[4.1]: https://github.com/troglobit/finit/compare/4.0...4.1
[4.0]: https://github.com/troglobit/finit/compare/3.1...4.0
[UNRELEASED]: https://github.com/troglobit/finit/compare/3.1...HEAD
[3.2]: https://github.com/troglobit/finit/compare/3.1...3.2
[3.1]: https://github.com/troglobit/finit/compare/3.0...3.1
[3.0]: https://github.com/troglobit/finit/compare/2.4...3.0
[2.4]: https://github.com/troglobit/finit/compare/2.3...2.4
@@ -1008,3 +812,9 @@ Major bug fix release.
[0.2]: https://github.com/troglobit/finit/compare/0.1...0.2
[libuEv]: https://github.com/troglobit/libuev
[dea3ae8]: https://github.com/troglobit/finit/commit/dea3ae8
<!--
-- Local Variables:
-- mode: markdown
-- End:
-->
+1 -1
View File
@@ -1,5 +1,5 @@
Copyright (c) 2008-2010 Claudio Matsuoka <cmatsuoka@gmail.com>
Copyright (c) 2008-2021 Joachim Wiberg <troglobit@gmail.com>
Copyright (c) 2008-2014 Joachim Nilsson <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
+6 -8
View File
@@ -1,13 +1,13 @@
ACLOCAL_AMFLAGS = -I m4
SUBDIRS = man plugins src test
SUBDIRS = plugins src
doc_DATA = README.md LICENSE contrib/finit.conf
EXTRA_DIST = README.md LICENSE ChangeLog.md contrib/finit.conf
if CONTRIB
SUBDIRS += contrib
endif
if DOC
SUBDIRS += doc
if DOCS
SUBDIRS += docs
endif
# Compat hook
@@ -16,9 +16,8 @@ install-dev:
# Target to run when building a release
release: distcheck
@for file in $(DIST_ARCHIVES); do \
md5sum $$file > ../$$file.md5; \
sha256sum $$file > ../$$file.sha256; \
@for file in $(DIST_ARCHIVES); do \
md5sum $$file > ../$$file.md5; \
done
@mv $(DIST_ARCHIVES) ../
@echo
@@ -26,6 +25,5 @@ release: distcheck
@echo "================================================================="
@for file in $(DIST_ARCHIVES); do \
printf "$$file \tDistribution tarball\n"; \
printf "$$file.md5\t"; cat ../$$file.md5 | cut -f1 -d' '; \
printf "$$file.sha256\t"; cat ../$$file.sha256 | cut -f1 -d' '; \
printf "$$file.md5\t"; cat ../$$file.md5 | cut -f1 -d' '; \
done
+187 -246
View File
@@ -1,58 +1,42 @@
[![License Badge][]][License] [![Travis Status]][Travis] [![Coverity Status]][Coverity Scan]
<img align="right" src="img/finit3.png" alt="Finit: Fast Init">
* [Introduction](#introduction)
* [Features](#features)
* [Bootstrap](doc/bootstrap.md#bootstrap)
* [Bootstrap](docs/bootstrap.md#bootstrap)
* [Runlevels](#runlevels)
* [Syntax](doc/config.md#syntax)
* [Syntax](docs/config.md#syntax)
* [Inetd](docs/inetd.md#inetd)
* [Runparts & /etc/rc.local](#runparts--etcrclocal)
* [Hooks, Callbacks & Plugins](doc/plugins.md#hooks-callbacks--plugins)
* [Hooks, Callbacks & Plugins](docs/plugins.md#hooks-callbacks--plugins)
* [Rebooting & Halting](#rebooting--halting)
* [Commands & Status](#commands--status)
* [Tips & Tricks with the kernel cmdline](doc/cmdline.md)
* [Building](doc/build.md#building)
* [Running](doc/build.md#running)
* [Recovery](doc/build.md#recovery)
* [Debugging](doc/build.md#debugging)
* [Tips & Tricks with the kernel cmdline](docs/cmdline.md)
* [Building](docs/build.md#building)
* [Running](docs/build.md#running)
* [Recovery](docs/build.md#recovery)
* [Debugging](docs/build.md#debugging)
* [Requirements](#requirements)
* [Origin & References](#origin--references)
Introduction
------------
[![License Badge][]][License] [![Travis Status]][Travis] [![Coverity Status]][Coverity Scan]
Fast init for Linux systems. 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, defined per service
* One-shot tasks, services (daemons), or [SysV init][4] start/stop scripts
* Runparts and `/etc/rc.local` support
* Process supervision similar to [systemd][]
* 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
* Proper rescue mode with bundled `sulogin` for protected maintenance shell
Finit is a simple alternative to [SysV init][4] and [systemd][6]. It
was reverse engineered from the [EeePC fastinit][] ten years ago by
[Claudio Matsuoka][] — "gaps filled with frog DNA …"
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:
* [Void Linux](contrib/void/),
* [Alpine Linux](contrib/alpine/), and
* [Debian GNU/Linux](contrib/debian/)
* [Alpine Linux](contrib/alpine/),
* [Debian GNU/Linux](contrib/debian/), and
* [Void Linux](contrib/void/)
![Alpine screenshot](img/alpine-screenshot.png)
The screenshot shows [Alpine Linux](https://www.alpinelinux.org/).
Example
@@ -75,59 +59,69 @@ runlevel 2
log size=100k count=4
# Services to be monitored and respawned as needed
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)
service [S12345] /sbin/watchdogd -L -f -- System watchdog daemon
service [S12345] /sbin/syslogd -n -b 3 -D -- System log daemon
service [S12345] /sbin/klogd -n -- Kernel log daemon
service [2345] /sbin/lldpd -d -c -M1 -H0 -i -- 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
# log file is rotated with the above settings. The condition declares
# a dependency on a system default route (gateway) to be set. A single
# <!> at the beginning means ntpd does not respect SIGHUP for restart.
service [2345] log:/var/log/ntpd.log <!net/route/default> ntpd -n -l -I eth0 -- NTP daemon
service [2345] log:/var/log/ntpd.log <!net/route/default> /sbin/ntpd -n -l -I eth0 -- NTP daemon
# For multiple instances of the same service, add :ID somewhere between
# the service/run/task keyword and the command.
service :80 [2345] merecat -n -p 80 /var/www -- Web server
service :8080 [2345] merecat -n -p 8080 /var/www -- Old web server
service :1 [2345] /sbin/merecat -n -p 80 /var/www -- Web server
service :2 [2345] /sbin/merecat -n -p 8080 /var/www -- Old web server
# Alternative method instead of below runparts, can also use /etc/rc.local
#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
#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
# Inetd services to start on demand, with alternate ports and filtering
inetd ftp/tcp nowait [2345] /sbin/in.ftpd -- FTP daemon
inetd tftp/udp wait [2345] /sbin/in.tftpd -- TFTP daemon
inetd time/udp wait [2345] internal -- UNIX rdate service
inetd time/tcp nowait [2345] internal -- UNIX rdate service
inetd 3737/tcp nowait [2345] internal.time -- UNIX rdate service
inetd telnet/tcp nowait [2345] /sbin/telnetd -i -F -- Telnet daemon
inetd 2323/tcp nowait [2345] /sbin/telnetd -i -F -- Telnet daemon
inetd 222/tcp@eth0 nowait [2345] /sbin/dropbear -i -R -F -- SSH service
inetd ssh/tcp@*,!eth0 nowait [2345] /sbin/dropbear -i -R -F -- SSH service
# 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 nowait noclear
tty [2345] /sbin/getty -L 0 /dev/tty2 linux nowait noclear
tty [2345] /sbin/getty -L 0 /dev/tty3 linux nowait noclear
# Virtual consoles run BusyBox getty
tty [12345] /sbin/getty -L 115200 /dev/tty1 linux
tty [12345] /sbin/getty -L 115200 /dev/tty2 linux
tty [12345] /sbin/getty -L 115200 /dev/tty3 linux
# 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 115200 noclear nowait
tty [12345] /dev/ttyUSB0 115200 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
in full in [doc/config.md](doc/config.md). Here's a quick overview of
some of the most common components needed to start a UNIX daemon:
The `service` stanza, as well as `task`, `run`, `inetd` and others are
described in full in [docs/config.md](docs/config.md). Here's a quick
overview of some of the most common components needed to start a UNIX
daemon:
```
service [LVLS] <COND> log env:[-]/etc/default/daemon daemon ARGS -- Daemon daemon
^ ^ ^ ^ ^ ^ ^ ^
| | | | | | | `-- Optional description
| | | | | | `----------- Daemon arguments
| | | | | `-------------------------- Path to daemon
| | | | `---------------------------------------------------- Optional env. file
| | | `-------------------------------------------------------- Redirect output to log
| | `--------------------------------------------------------------- Optional conditions
| `---------------------------------------------------------------------- Optional Runlevels
`------------------------------------------------------------------------------ Monitored application
service [LVLS] <COND> /path/to/daemon ARGS -- Some text
^ ^ ^ ^ ^ ^
| | | | | `-- Optional description
| | | | `---------- Daemon arguments
| | | `-------------------------- Path to daemon
| | `--------------------------------- Optional conditions
| `---------------------------------------- Optional Runlevels
`------------------------------------------------ Monitored application
```
Some components are optional: runlevel(s), condition(s) and description,
@@ -136,18 +130,18 @@ advanced uses as well:
service /usr/sbin/sshd -D
Dependencies are handled using [conditions](doc/conditions.md). One of
Dependencies are handled using [conditions](docs/conditions.md). One of
the most common conditions is to wait for basic networking to become
available:
service <net/route/default> nginx -- High performace HTTP server
service <net/route/default> /usr/sbin/nginx -- High performace HTTP server
Here is another example where we instruct Finit to not start BusyBox
`ntpd` until `syslogd` has started properly. Finit waits for `syslogd`
to create its PID file, by default `/var/run/syslogd.pid`.
service [2345] log <!pid/syslogd> ntpd -n -N -p pool.ntp.org
service [S12345] syslogd -n -- Syslog daemon
service [2345] log <svc/sbin/syslogd> /usr/sbin/ntpd -n -N -p pool.ntp.org
service [S12345] /sbin/syslogd -n -- Syslog daemon
Notice the `log` keyword, BusyBox `ntpd` uses `stderr` for logging when
run in the foreground. With `log` Finit redirects `stdout` + `stderr`
@@ -156,7 +150,7 @@ to the system log daemon using the command line `logger(1)` tool.
A service, or task, can have multiple dependencies listed. Here we wait
for *both* `syslogd` to have started and basic networking to be up:
service [2345] log <pid/syslogd,net/route/default> ntpd -n -N -p pool.ntp.org
service [2345] log <svc/sbin/syslogd,net/route/default> /usr/sbin/ntpd -n -N -p pool.ntp.org
If either condition fails, e.g. loss of networking, `ntpd` is stopped
and as soon as it comes back up again `ntpd` is restarted automatically.
@@ -175,6 +169,26 @@ Features
Start, monitor and restart services should they fail.
**Inetd**
Finit comes with a built-in [inetd server](docs/inetd.md). No need to
maintain a separate config file for services that you want to start on
demand.
All inetd services started can be filtered per port and inbound
interface, reducing the need for a full blown firewall.
Built-in optional inetd services:
- echo [RFC862][]
- chargen [RFC864][]
- daytime [RFC867][]
- discard [RFC863][]
- time (rdate) [RFC868][]
For more information, see [docs/inetd.md](docs/inetd.md).
**Getty**
Finit supports external getty but also comes with a limited built-in
@@ -183,9 +197,9 @@ waits for user input before handing over to `/bin/login`, which is
responsible for handling the actual authentication.
```conf
tty [12345] /dev/tty1 nowait linux
tty [12345] /dev/ttyAMA0 noclear vt100
tty [12345] /sbin/getty -L /dev/ttyAMA0 vt100
tty [12345] /dev/tty1 38400 nowait linux
tty [12345] /dev/ttyAMA0 115200 noclear vt100
tty [12345] /sbin/getty -L 115200 /dev/ttyAMA0 vt100
```
Users of embedded systems may want to enable automatic serial console
@@ -194,19 +208,19 @@ system uses `ttyS0`, `ttyAMA0`, `ttyMXC0`, or anything else. Finit
figures it out by querying sysfs: `/sys/class/tty/console/active`.
```conf
tty [12345] @console linux noclear
tty [12345] @console 115200 linux noclear
```
Notice the optional `noclear`, `nowait`, and `nologin` flags. The
latter is for skipping the login process entirely. For more information,
see [doc/config.md](doc/config.md#syntax).
see [docs/config.md](docs/config.md#syntax).
**Runlevels**
Support for SysV init-style [runlevels][5] is available, in the same
minimal style as everything else in Finit. The `[2345]` syntax can be
applied to service, task, run, and TTY stanzas.
applied to service, task, run, inetd, and TTY stanzas.
Reserved runlevels are 0 and 6, halt and reboot, respectively just like
SysV init. Runlevel 1 can be configured freely, but is recommended to
@@ -236,69 +250,34 @@ Capabilities:
Hook into the boot at predefined points to extend Finit
- **I/O**
Listen to external events and control Finit behavior/services
- **Inetd**
Extend Finit with internal inetd services, for an example, see
`plugins/time.c`
Extensions and functionality not purely related to what an `/sbin/init`
needs to start a system are available as a set of plugins that either
hook into the boot process or respond to various I/O.
For more information, see [doc/plugins.md](doc/plugins.md).
For more information, see [docs/plugins.md](docs/plugins.md).
**Automatic Reload**
**Progress**
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. 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.
Finit prior to v3.0 showed the progress at boot: plugins and modules
being loaded, run/tasks/services being started, etc. By default Finit
is now silent, but progress can still be enabled at build-time using:
For some use-cases the extra step of calling `initctl reload` creates an
unnecessary overhead, which can be removed at build-time using:
configure --enable-progress
configure --enable-auto-reload
or at boot from the kernel cmdline using the boot parameter `splash`:
```shell
append="init=/sbin/finit splash"
```
**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.
For a really nice boot, add `quiet` as well. This silences the output
from the kernel, leaving only warnings and errors. For other kernel
command line parameters, see [docs/build.md](docs/build.md#recovery).
Runparts & /etc/rc.local
@@ -320,8 +299,8 @@ Right after the runlevel change when all services have started properly,
No configuration stanza in `/etc/finit.conf` is required for `rc.local`.
If it exists and is an executable shell script Finit calls it at the very
end of the boot, before calling the `HOOK_SYSTEM_UP`. See more on hooks
in [doc/plugins.md](doc/plugins.md#hooks), and about the system bootstrap
in [doc/bootstrap.md](doc/bootstrap.md).
in [docs/plugins.md](docs/plugins.md#hooks), and about the system bootstrap
in [docs/bootstrap.md](docs/bootstrap.md).
Runlevels
@@ -342,10 +321,10 @@ To specify an allowed set of runlevels for a `service`, `run` command,
`task`, or `tty`, add `[NNN]` to your `/etc/finit.conf`, like this:
```
service [S12345] syslogd -n -x -- System log daemon
run [S] /etc/init.d/acpid start -- Starting ACPI Daemon
task [S] /etc/init.d/kbd start -- Preparing console
service [S12345] <pid/syslogd> klogd -n -x -- Kernel log daemon
service [S12345] /sbin/syslogd -n -x -- System log daemon
run [S] /etc/init.d/acpid start -- Starting ACPI Daemon
task [S] /etc/init.d/kbd start -- Preparing console
service [S12345] /sbin/klogd -n -x -- Kernel log daemon
tty [12345] /dev/tty1
tty [2] /dev/tty2
@@ -392,34 +371,50 @@ Rebooting & Halting
Traditionally, rebooting and halting a UNIX system is done by changing
its runlevel. Finit comes with its own tooling providing: `shutdown`,
`reboot`, `poweroff`, and `suspend`, but also the `initctl` tool,
detailed in the next section.
`reboot`, `poweroff`, and `suspend`, but also the traditional `init` and
`telinit`, as well as a more modern `initctl` tool, detailed in the next
section.
For compatibility reasons Finit listens to the same set of signals as
BusyBox init. This is not 100% compatible with SysV init, but clearly
the more common combination for Finit. For more details, see
[doc/signals.md](doc/signals.md).
[docs/signals.md](docs/signals.md).
Finit also listens to the classic SysV init FIFO, used by `telinit`.
Support for this is implemented by the `initctl.so` plugin. Hence,
`telinit q` will work as the UNIX beards intended.
```shell
~ # telinit -h
Usage: telinit [OPTIONS] [q | Q | 0-9]
Options:
-h, --help This help text
-V, --version Show Finit version
Commands:
0 Power-off the system, same as initctl poweroff
6 Reboot the system, same as initctl reboot
2, 3, 4, 5 Change runlevel. Starts services in new runlevel, stops any
services in prev. runlevel that are not allowed in new.
q, Q Reload *.conf in /etc/finit.d/, same as initctl reload or
sending SIGHUP to PID 1
1, s, S Enter system rescue mode, runlevel 1
```
Commands & Status
-----------------
Finit also implements a modern API to query status, and start/stop
Finit also implements a more 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.
```
alpine:~# initctl help
```shell
~ $ initctl -h
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
@@ -427,113 +422,54 @@ Commands:
debug Toggle Finit (daemon) debug
help This help text
version Show Finit version
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
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 set <COND> Set (assert) condition => +COND
cond clear <COND> Clear (deassert) condition => -COND
cond show Show condition status
cond dump Dump all conditions and their status
log [NAME] Show ten last Finit, or NAME, messages from syslog
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
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
runlevel [0-9] Show or set runlevel: 0 halt, 6 reboot
reboot Reboot system
halt Halt system
poweroff Halt and power off system
suspend Suspend system
utmp show Raw dump of UTMP/WTMP db
```
For services *not* supporting `SIGHUP` the `<!>` notation in the .conf
file must be used to tell Finit to stop and start it on `reload` and
`runlevel` changes. If `<>` holds more [conditions](doc/conditions.md),
`runlevel` changes. If `<>` holds more [conditions](docs/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.
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
```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
```
@@ -554,7 +490,7 @@ done slightly differently and on systems with udev you might want to add
the following one-shot task early in your `/etc/finit.conf`:
```conf
run [S] udevadm settle --timeout=120 -- Waiting for udev
run [S] /sbin/udevadm settle --timeout=120 -- Waiting for udev
```
Finit has a built-in Getty for TTYs, but requires a working `/bin/login`
@@ -563,6 +499,9 @@ or `/bin/sh`, if no TTYs are configured in `/etc/finit.conf`.
For a fully operational system `/var`, `/run` and `/tmp` must be set up
properly in `/etc/fstab` -- which is iterated over at boot.
The built-in Inetd requires `/etc/services` and `/etc/protocols` to work
with port names rather than numbers.
Origin & References
-------------------
@@ -571,7 +510,7 @@ This project is based on the [original finit][] by [Claudio Matsuoka][]
which was reverse engineered from syscalls of the [EeePC fastinit][] —
"gaps filled with frog DNA …"
Finit is developed and maintained by [Joachim Wiberg][] at [GitHub][].
Finit is developed and maintained by [Joachim Nilsson][] at [GitHub][].
Please file bug reports, clone it, or send pull requests for bug fixes
and proposed extensions.
@@ -581,6 +520,8 @@ and proposed extensions.
[3]: http://smarden.org/runit/
[4]: http://en.wikipedia.org/wiki/Init
[5]: http://en.wikipedia.org/wiki/Runlevel
[6]: https://www.freedesktop.org/wiki/Software/systemd/
[9]: https://github.com/troglobit/troglos
[RFC862]: https://tools.ietf.org/html/rfc862
[RFC863]: https://tools.ietf.org/html/rfc863
[RFC864]: https://tools.ietf.org/html/rfc864
@@ -592,13 +533,13 @@ and proposed extensions.
[openrc]: http://www.gentoo.org/proj/en/base/openrc/
[run-parts(8)]: http://manpages.debian.org/cgi-bin/man.cgi?query=run-parts
[original finit]: http://helllabs.org/finit/
[EeePC fastinit]: https://web.archive.org/web/20071208212450/http://wiki.eeeuser.com/boot_process:the_boot_process
[EeePC fastinit]: http://wiki.eeeuser.com/boot_process:the_boot_process
[Claudio Matsuoka]: https://github.com/cmatsuoka
[Joachim Wiberg]: http://troglobit.com
[Joachim Nilsson]: http://troglobit.com
[GitHub]: https://github.com/troglobit/finit
[License]: https://en.wikipedia.org/wiki/MIT_License
[License Badge]: https://img.shields.io/badge/License-MIT-teal.svg
[License Badge]: https://img.shields.io/badge/License-MIT-yellow.svg
[Travis]: https://travis-ci.org/troglobit/finit
[Travis Status]: https://travis-ci.org/troglobit/finit.svg?branch=master
[Travis Status]: https://travis-ci.org/troglobit/finit.png?branch=master
[Coverity Scan]: https://scan.coverity.com/projects/3545
[Coverity Status]: https://scan.coverity.com/projects/3545/badge.svg
+106 -88
View File
@@ -1,6 +1,5 @@
AC_INIT(Finit, 4.1, 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])
AC_INIT(Finit, 3.2-rc1, https://github.com/troglobit/finit/issues, finit, http://troglobit.com/finit.html)
AM_INIT_AUTOMAKE([1.11 foreign no-dist-gzip dist-xz subdir-objects])
AM_SILENT_RULES([yes])
AC_CONFIG_SRCDIR([src/finit.c])
@@ -8,20 +7,20 @@ AC_CONFIG_HEADER([config.h])
AC_CONFIG_FILES([Makefile
contrib/Makefile
contrib/alpine/Makefile contrib/alpine/finit.d/Makefile contrib/alpine/finit.d/available/Makefile
contrib/debian/Makefile contrib/debian/finit.d/Makefile contrib/debian/finit.d/available/Makefile
contrib/debian/Makefile contrib/debian/finit.d/Makefile contrib/debian/finit.d/available/Makefile contrib/debian/grub.d/Makefile
contrib/void/Makefile contrib/void/finit.d/Makefile contrib/void/finit.d/available/Makefile
doc/Makefile
man/Makefile
docs/Makefile
plugins/Makefile
src/Makefile
test/test.env
test/Makefile])
src/Makefile])
# Older versions of autoconf (<2.58) do not have AC_CONFIG_MACRO_DIR()
#m4_include([m4/plugin.m4])
#m4_include([m4/expand.m4])
AC_CONFIG_MACRO_DIR([m4])
# Change default prefix, we're PID 1 after all ...
AC_PREFIX_DEFAULT([])
# Handle building plugins either as dynamically loadable, or built-in
LT_INIT([shared disable-static dlopen aix-soname=both disable-fast-install])
@@ -33,7 +32,7 @@ AC_PROG_MKDIR_P
# Configuration.
AC_HEADER_STDC
AC_CHECK_HEADERS([fstaby.h termios.h sys/ioctl.h])
AC_CHECK_HEADERS([fstaby.h termios.h])
AC_CHECK_FUNCS([strstr getopt getfsenty])
# Check for uint[8,16,32]_t
@@ -41,33 +40,47 @@ AC_TYPE_UINT8_T
AC_TYPE_UINT16_T
AC_TYPE_UINT32_T
# Check for pkg-config first, warn if it's not installed
PKG_PROG_PKG_CONFIG
# Check for required libraries
PKG_CHECK_MODULES([uev], [libuev >= 2.2.0])
PKG_CHECK_MODULES([lite], [libite >= 2.2.0])
PKG_CHECK_MODULES([lite], [libite >= 2.0.1])
# Check for configured Finit features
AC_ARG_ENABLE(auto_reload,
AS_HELP_STRING([--enable-auto-reload], [Automatic reload on any .conf change]),,[
enable_auto_reload=no])
AC_ARG_ENABLE(emergency_shell,
AS_HELP_STRING([--enable-emergency-shell], [Experimental emergency fallback at boot.
Use only for debugging very early boot problems with Finit]),,[
enable_emergency_shell=no])
AC_ARG_ENABLE(kernel_cmdline,
AS_HELP_STRING([--enable-kernel-cmdline], [Parse init args from /proc/cmdline (don't use!)]),,[
enable_kernel_cmdline=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(rw-rootfs,
AS_HELP_STRING([--enable-rw-rootfs], [Remount / R/W at boot, usually not for embedded]),,[
enable_rw_rootfs=no])
AC_ARG_ENABLE(progress,
AS_HELP_STRING([--enable-progress], [Pre Finit v3 bootup progress and heading]),,[
enable_progress=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([--disable-redirect], [Disable redirection of service output to /dev/null]),,[
enable_redirect=yes])
AS_HELP_STRING([--enable-redirect], [Redirect service output to /dev/null, default: no]),,[
enable_redirect_output=no])
AC_ARG_ENABLE(inetd,
AS_HELP_STRING([--disable-inetd], [Disable built-in inetd super server, default enabled]),,[
enable_inetd=yes])
AC_ARG_ENABLE(logrotate,
AS_HELP_STRING([--disable-logrotate], [Disable built-in rotation of /var/log/wtmp, default enabled]),,[
enable_logrotate=yes])
AC_ARG_ENABLE(doc,
AS_HELP_STRING([--disable-doc], [Disable build and install of doc/ section]),,[
enable_doc=yes])
AC_ARG_ENABLE(docs,
AS_HELP_STRING([--disable-docs], [Disable build and install of docs section]),,[
enable_docs=yes])
AC_ARG_ENABLE(contrib,
AS_HELP_STRING([--disable-contrib], [Disable build and install of contrib section]),,[
@@ -77,86 +90,103 @@ AC_ARG_ENABLE(contrib,
enable_all_plugins=auto
AC_PLUGIN([alsa-utils], [no], [Save and restore ALSA sound settings using alsactl])
AC_PLUGIN([dbus], [no], [Setup and start system message bus, D-Bus])
AC_PLUGIN([inetd-echo], [no], [Inetd plugin: echo server, RFC862])
AC_PLUGIN([inetd-chargen], [no], [Inetd plugin: character generator, RFC864])
AC_PLUGIN([inetd-daytime], [no], [Inetd plugin: daytime server, RFC867])
AC_PLUGIN([inetd-discard], [no], [Inetd plugin: discard server, RFC863])
AC_PLUGIN([inetd-time], [no], [Inetd plugin: time (rdate) server, RFC868])
AC_PLUGIN([modules-load], [no], [Scans /etc/modules-load.d for modules to load])
AC_PLUGIN([resolvconf], [no], [Setup necessary files for resolvconf])
AC_PLUGIN([x11-common], [no], [Console setup (for X)])
AC_PLUGIN([netlink], [yes], [Basic netlink plugin for IFUP/IFDN and GW events. Can be replaced with externally built plugin that links with libnl or similar.])
AC_PLUGIN([hotplug], [yes], [Setup and start udev or mdev hotplug daemon])
AC_PLUGIN([rtc], [yes], [Save and restore RTC using hwclock])
AC_PLUGIN([urandom], [yes], [Setup and save random seed at boot/shutdown])
# Check for extra arguments or packages
AC_ARG_WITH(heading,
AS_HELP_STRING([--with-heading=GREET], [Heading for boot progress. Default: PRETTY_NAME from /etc/os-release, fallback to "Finit vX.YY"]),
[heading=$withval], [heading=yes])
AS_HELP_STRING([--with-heading=GREET], [Display GREET instead of Finit version at boot]),
[heading=$withval], [heading="$PACKAGE_NAME v$PACKAGE_VERSION"])
AC_ARG_WITH(fifo,
AS_HELP_STRING([--with-fifo=FIFO], [FIFO for init/telinit clients, default /var/run/initctl]),
[fifo=$withval], [fifo=$localstatedir/run/initctl])
AC_ARG_WITH(config,
AS_HELP_STRING([--with-config=CONFIG], [Finit bootstrap config file, default /etc/finit.conf]),
[conf=$withval], [conf=yes])
[conf=$withval], [conf=$sysconfdir/finit.conf])
AC_ARG_WITH(rcsd,
AS_HELP_STRING([--with-rcsd=DIR], [Finit rcS.d/ directory, default /etc/finit.d]),
[rcsd=$withval], [rcsd=yes])
[rcsd=$withval], [rcsd=$sysconfdir/finit.d])
AC_ARG_WITH(rc-local,
AS_HELP_STRING([--with-rc-local=FILE], [SysV init /etc/rc.local file, default /etc/rc.local]),
[rclocal=$withval], [rclocal=yes])
[rclocal=$withval], [rclocal=$sysconfdir/rc.local])
AC_ARG_WITH(sysconfig,
AS_HELP_STRING([--with-sysconfig=DIR], [System environment directory, sourced by .conf files, default /etc/default & /etc/conf.d]),
[sysconfig=$withval], [sysconfig=default])
AC_ARG_WITH(console,
AS_HELP_STRING([--with-console=DEV], [Console to use, default: /dev/console]),
[console=$withval], [console=/dev/console])
AC_ARG_WITH(hostname,
AS_HELP_STRING([--with-hostname=NAME], [If /etc/hostname is missing, default: noname]),
[hostname=$withval], [hostname=yes])
[hostname=$withval], [hostname=noname])
AC_ARG_WITH(runlevel,
AS_HELP_STRING([--with-runlevel=N], [Runlevel to switch to after bootstrap, default: 2]),
[runlevel=$withval], [runlevel=yes])
[runlevel=$withval], [runlevel=2])
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])
[random_seed=$withval], [random_seed=/var/lib/misc/random-seed])
AC_ARG_WITH(keventd,
AS_HELP_STRING([--with-keventd], [Enable built-in keventd, default: no]),, [with_keventd=no])
AC_ARG_WITH(watchdog,
AS_HELP_STRING([--with-watchdog=[DEV]], [Enable built-in watchdog, default: /dev/watchdog]),
[watchdog=$withval], [with_watchdog=no watchdog=])
### Enable features ###########################################################################
# Create config.h from selected features and fallback defaults
AS_IF([test "x$enable_auto_reload" = "xyes"], [
AC_DEFINE(AUTO_RELOAD, 1, [Finit automatically does `initctl reload` on any .conf change])])
# Create config.h from selected features and fallback defautls
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_kernel_cmdline" = "xyes"], [
AC_DEFINE(KERNEL_CMDLINE, 1, [Dumpster diving after init args from /proc/cmdline])])
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_rw_rootfs" = "xyes"], [
AC_DEFINE(REMOUNT_ROOTFS, 1, [Remount / as rw at boot])])
AS_IF([test "x$enable_progress" = "xyes"], [
AC_DEFINE(SILENT_MODE, 0, [Pre Finit v3 bootup messages and heading])
], [
AC_DEFINE(SILENT_MODE, 1, [Completely silent until login prompt])])
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])])
### Disable features ###########################################################################
AS_IF([test "x$enable_inetd" != "xno"], [
enable_inetd="yes"
AC_DEFINE(INETD_ENABLED, 1, [Enable built-in inetd])])
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_fifo" != "xno"], [
AS_IF([test "x$fifo" = "xyes"], [
fifo='$localstatedir/run/initctl'])])
AC_EXPAND_DIR(fifo_path, "$fifo")
AC_DEFINE_UNQUOTED(FINIT_FIFO, "$fifo_path", [FIFO for old style init/telinit client programs])
AS_IF([test "x$with_config" != "xno"], [
AS_IF([test "x$conf" = "xyes"], [
AS_IF([test "x$config" = "xyes"], [
conf=$sysconfdir/finit.conf])])
AC_EXPAND_DIR(conf_path, "$conf")
AC_DEFINE_UNQUOTED(FINIT_CONF, "$conf_path", [Main Finit configuration file, default /etc/finit.conf])
AC_SUBST(FINIT_CONF, "$conf_path")
AS_IF([test "x$with_rcsd" != "xno"], [
AS_IF([test "x$rcsd" = "xyes"], [
rcsd=$sysconfdir/finit.d])])
AC_EXPAND_DIR(rcsd_path, "$rcsd")
AC_DEFINE_UNQUOTED(FINIT_RCSD, "$rcsd_path", [Finit rcS.d/, default /etc/finit.d])
AC_SUBST(FINIT_RCSD, "$rcsd_path")
AS_IF([test "x$with_rc_local" != "xno"], [
AS_IF([test "x$rclocal" = "xyes"], [
@@ -164,15 +194,15 @@ AS_IF([test "x$with_rc_local" != "xno"], [
AC_EXPAND_DIR(rclocal_path, "$rclocal")
AC_DEFINE_UNQUOTED(FINIT_RC_LOCAL, "$rclocal_path", [Compat SysV /etc/rc.local file to run last at boot.])
AS_IF([test "x$with_sysconfig" != "xno"], [
AS_IF([test "x$sysconfig" != "xdefault"], [
AC_EXPAND_DIR(sysconfig_path, "$sysconfig")
AC_DEFINE_UNQUOTED(FINIT_SYSCONFIG, "$sysconfig_path",
[System environment, default /etc/default & /etc/conf.d])])])
AS_IF([test "x$with_heading" != "xno"], [
AS_IF([test "x$heading" = "xyes"], [heading=""])
AC_DEFINE_UNQUOTED(INIT_OSHEADING, "$heading", [Displayed by Finit at boot, defaults to /etc/os-release PRETTY_NAME])])
AS_IF([test "x$heading" = "xyes"], [
heading="$PACKAGE_NAME v$PACKAGE_VERSION"])])
AC_DEFINE_UNQUOTED(INIT_HEADING, "$heading", [Displayed by Finit at boot])
AS_IF([test "x$with_console" != "xno"], [
AS_IF([test "x$console" = "xyes"], [
console=/dev/console])])
AC_DEFINE_UNQUOTED(CONSOLE, "$console", [Default console to use])
AS_IF([test "x$with_hostname" != "xno"], [
AS_IF([test "x$hostname" = "xyes"], [
@@ -181,8 +211,7 @@ AC_DEFINE_UNQUOTED(DEFHOST, "$hostname", [For /etc/hostname])
AS_IF([test "x$with_runlevel" != "xno"], [
AS_IF([test "x$runlevel" = "xyes"], [
runlevel=2
AC_DEFINE_UNQUOTED(RUNLEVEL, $runlevel, [Default runlevel to start after S])])
AC_DEFINE_UNQUOTED(RUNLEVEL, 2, [Default runlevel to start after S])])
AC_DEFINE_UNQUOTED(RUNLEVEL, $runlevel, [Runlevel to start after S])])
AS_IF([test "x$with_random_seed" != "xno"], [
@@ -191,20 +220,11 @@ 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_keventd" != "xno"], [with_keventd=yes])
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])], [
watchdog=])
# Control build with automake flags
AM_CONDITIONAL(STATIC, [test "x$enable_static" = "xyes"])
AM_CONDITIONAL(KEVENTD, [test "x$with_keventd" != "xno"])
AM_CONDITIONAL(WATCHDOGD, [test "x$with_watchdog" != "xno"])
AM_CONDITIONAL(DOC, [test "x$enable_doc" = "xyes"])
AM_CONDITIONAL(INETD, [test "x$enable_inetd" = "xyes"])
AM_CONDITIONAL(WATCHDOGD, [test "x$enable_watchdog" = "xyes"])
AM_CONDITIONAL(DOCS, [test "x$enable_docs" = "xyes"])
AM_CONDITIONAL(CONTRIB, [test "x$enable_contrib" = "xyes"])
# Override default libdir, used for plugins and rescue.conf
@@ -219,11 +239,6 @@ AC_DEFINE_UNQUOTED(PLUGIN_PATH, "$plugin_path", [Finit plugin path])
AC_EXPAND_DIR(rescue_conf, "$libdir/finit/rescue.conf")
AC_DEFINE_UNQUOTED(RESCUE_CONF, "$rescue_conf", [Finit rescue mode .conf])
AC_EXPAND_DIR(sample_conf, "$libdir/finit/sample.conf")
AC_DEFINE_UNQUOTED(SAMPLE_CONF, "$sample_conf", [Finit sameple.conf for initctl create])
AS_IF([test "$heading" = ""], [heading="<DEFAULT>"])
AS_IF([test "$heading" = "no"], [heading="<NONE>"])
# Generate all files
AC_OUTPUT
@@ -233,14 +248,13 @@ cat <<EOF
------------------ Summary ------------------
$PACKAGE_NAME version $PACKAGE_VERSION
Prefix................: $prefix
Exec prefix...........: $eprefix
Sysconfdir............: `eval echo $sysconfdir`
Localstatedir.........: `eval echo $localstatedir`
FIFO path.............: $fifo_path
Finit config file.....: $conf_path
Finit config.d path...: $rcsd_path
Finit plugin path.....: $plugin_path
Compat rc.local path..: $rclocal_path
System environment....: ${sysconfig_path:-${sysconfig}}
Random seed path......: $random_path
C Compiler............: $CC $CFLAGS $CPPFLAGS $LDFLAGS $LIBS
Linker................: $LD $LLDP_LDFLAGS $LLDP_BIN_LDFLAGS $LDFLAGS $LIBS
@@ -250,12 +264,16 @@ Behavior:
Plugins...............: $plugins
Optional features:
Install doc/..........: $enable_doc
Install docs/.........: $enable_docs
Install contrib/......: $enable_contrib
Built-in keventd......: $with_keventd
Built-in watchdogd....: $with_watchdog $watchdog
Built-in inetd........: $enable_inetd
Built-in watchdogd....: $enable_watchdog
Built-in logrotate....: $enable_logrotate
Redirect output.......: $enable_redirect
Emergency shell.......: $enable_emergency_shell
Fallback shell........: $enable_fallback_shell
Remount / RW at boot..: $enable_rw_rootfs
Traditional progress..: $enable_progress
Default console dev...: $console
Default hostname......: $hostname
Default runlevel......: $runlevel
+1 -1
View File
@@ -1,5 +1,5 @@
SUBDIRS = finit.d
docsdir := @docdir@/contrib/alpine
docs_DATA = README.md finit.conf build.sh install.sh rc.local
docs_DATA = README.md finit.conf alpine-release build.sh install.sh rc.local
EXTRA_DIST = $(docs_DATA)
+1
View File
@@ -0,0 +1 @@
3.6.2
+6 -5
View File
@@ -14,11 +14,12 @@ fi
# The plugins are optional, but you may need D-Bus and X11 if you want
# to run X-Window, the other configure flags are however required.
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 --with-watchdog \
--with-keventd
--enable-rw-rootfs --enable-progress \
--enable-dbus-plugin --enable-x11-common-plugin \
--enable-alsa-utils-plugin --enable-inetd-echo-plugin \
--enable-inetd-chargen-plugin --enable-inetd-daytime-plugin \
--enable-inetd-discard-plugin --enable-inetd-time-plugin \
--with-heading="Alpine Linux 3.6" --with-hostname=alpine
echo
echo "*** Building ..."
+1 -17
View File
@@ -5,22 +5,6 @@
# Default is 2
#runlevel 2
# 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
# Task to run if ctrl-alt-del is pressed. This condition is asserted by
# Finit upon receiving SIGINT (from the kernel).
#task <sys/key/ctrlaltdel> [12345789] initctl reboot -- Rebooting system
# Task to run if the kernel gets a power fail condition is pressed.
# Asserted by Finit upon receiving SIGPWR (from the kernel).
#task <sys/pwr/fail> [12345789] initctl poweroff -- Shutting down system
## Bootstrap services and tasks
# Can be listed here or in /etc/finit.d/*.conf
+13 -9
View File
@@ -1,23 +1,27 @@
SUBDIRS = available
docsdir := @docdir@/contrib/alpine/finit.d
d_LINKS = acpid.conf crond.conf dropbear.conf getty.conf \
keymap.conf modules.conf ntpd.conf \
klogd.conf syslogd.conf
d_LINKS = dropbear.conf getty.conf keymap.conf modules.conf klogd.conf \
syslogd.conf
install-exec-hook:
@$(MKDIR_P) $(DESTDIR)$(docsdir)/available
@$(MKDIR_P) $(DESTDIR)$(docsdir)/enabled
@for file in $(d_LINKS); do \
lnk=$(DESTDIR)$(docsdir)/enabled/$$file; \
lnk=$(DESTDIR)$(docsdir)/$$file; \
src=available/$$file; \
rm -f $$lnk; \
$(LN_S) ../$$src $$lnk; \
if [ -L $$lnk ]; then \
echo "Skipping $$lnk exists."; \
else \
$(LN_S) $$src $$lnk; \
fi; \
done
uninstall-hook:
@for file in $(d_LINKS); do \
lnk=$(DESTDIR)$(docsdir)/enabled/$$file; \
lnk=$(DESTDIR)$(docsdir)/$$file; \
src=available/$$file; \
$(RM) -f $$lnk; \
if [ "`readlink $$lnk`" != "$$src" ]; then \
continue; \
fi; \
$(RM) $$lnk; \
done
+2 -2
View File
@@ -1,4 +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 syslog.conf watchdog.conf
docs_DATA = acpid.conf crond.conf dropbear.conf getty.conf keymap.conf \
lxdm.conf modules.conf ntpd.conf klogd.conf syslogd.conf
EXTRA_DIST = $(docs_DATA)
+1 -1
View File
@@ -1,3 +1,3 @@
# 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] log <svc/sbin/syslogd> /sbin/acpid -f -- ACPI daemon
+1 -1
View File
@@ -1 +1 @@
service [2345] <pid/syslogd> env:-/etc/conf.d/crond crond -f -S $CRON_OPTS -- Cron daemon
service [2345] <svc/sbin/syslogd> /usr/sbin/crond -f -S -c /etc/crontabs -- Cron daemon
@@ -1,2 +1,2 @@
# Start SSH daemon as soon as basic networking comes up
service [2345] env:-/etc/conf.d/dropbear dropbear -R -F $DROPBEAR_OPTS -- Dropbear SSH daemon
service [2345] <net/lo/up> /usr/sbin/dropbear -R -F -p 22 -- Dropbear SSH daemon
+3 -4
View File
@@ -1,5 +1,4 @@
# Consoles to start getty on when system is up
tty [12345] /dev/ttyS0 noclear
tty [12345] /dev/tty1 noclear nowait
tty [2345] /dev/tty2 noclear nowait
tty [2345] /dev/tty3 noclear nowait
tty /dev/tty1 noclear nowait
tty /dev/tty2 noclear nowait
tty /dev/tty3 noclear nowait
+1 -1
View File
@@ -1,2 +1,2 @@
# Oneshot task to run once at bootstrap
task [S] env:/etc/conf.d/loadkmap zcat $KEYMAP | loadkmap -- Loading keymap
task [S] zcat /etc/keymap/se.bmap.gz | loadkmap -- Loading keymap
@@ -0,0 +1,2 @@
# Start klogd as soon as possible, should always run
service [S12345] /sbin/klogd -n -- Kernel log daemon
+1 -1
View File
@@ -1 +1 @@
service [2345] lxdm -- Lightweight Login Manager
service [2345] /usr/sbin/lxdm -- Lightweight Login Manager
@@ -1,7 +1,6 @@
## Linux kernel modules to load
#module fbcon
#module button
#module evdev
#module mousedev
#module 8139cp
module softdog
module button
module evdev
module mousedev
module 8139cp
+2 -2
View File
@@ -1,2 +1,2 @@
# Busybox ntpd has no option to use syslog when running in foreground
service [2345] <pid/syslogd> env:-/etc/conf.d/ntpd log ntpd -n $NTPD_OPTS -- NTP daemon
# Silly Busybox ntpd has no option to use syslog when running in foreground
service [2345] log <svc/sbin/syslogd> /usr/sbin/ntpd -n -N -p pool.ntp.org -- NTP daemon
@@ -1,4 +0,0 @@
# Start syslogd as soon as possible, should always run
# 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
@@ -0,0 +1,2 @@
# Start syslogd as soon as possible, should always run
service [S12345] /sbin/syslogd -n -- Syslog daemon
@@ -1 +0,0 @@
service [S123456789] env:-/etc/conf.d/watchdog watchdog $WATCHDOG_OPTS $WATCHDOG_DEV -- System watchdog
+1
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@@ -0,0 +1 @@
available/dropbear.conf
+1
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@@ -0,0 +1 @@
available/getty.conf
+1
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@@ -0,0 +1 @@
available/keymap.conf
+1
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@@ -0,0 +1 @@
available/klogd.conf
+1
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@@ -0,0 +1 @@
available/modules.conf
+1
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@@ -0,0 +1 @@
available/syslogd.conf
+3 -9
View File
@@ -8,10 +8,9 @@ if [ "x`id -u`" != "x0" ]; then
fi
# Adjust base directory
grep -q alpine Makefile 2>/dev/null
if [ $? -eq 0 ]; then
if [ -e alpine-release ]; then
cd ../..
elif [ ! -e configure.ac ]; then
elif [ ! -e autogen.sh ]; then
echo "*** Please run this script from the Finit base directory."
exit 1
fi
@@ -30,7 +29,7 @@ if [ "x$yorn" = "xy" -o "x$yorn" = "xY" ]; then
echo
echo "*** Installing Finit files ..."
make install
cd /usr/share/doc/finit/contrib/alpine
cd `dirname $0`
for file in finit.conf rc.local; do
install -vbD $file /etc/$file
done
@@ -42,11 +41,6 @@ if [ "x$yorn" = "xy" -o "x$yorn" = "xY" ]; then
cd /sbin
rm init
ln -s finit init
rm halt shutdown suspend
ln -s reboot halt
ln -s reboot shutdown
ln -s reboot suspend
fi
echo "*** Done"
echo
-39
View File
@@ -1,39 +0,0 @@
#!/bin/sh
if [ "x`id -u`" != "x0" ]; then
echo
echo "*** This script must run as root"
echo
exit 1
fi
read -p "Do you really want to uninstall Finit (y/N)? " yorn
if [ "x$yorn" = "xy" -o "x$yorn" = "xY" ]; then
echo
echo "*** Removing all Finit files ..."
rm -rf /usr/share/doc/finit
rm -rf /etc/finit.conf
rm -rf /etc/finit.d
rm -rf /lib/finit
if [ -e /etc/rc.local ]; then
echo "*** Skipping /etc/rc.local, not sure if we installed it ..."
fi
echo "*** Restoring BusyBox as /sbin/init ..."
cd /sbin
rm init
ln -s /bin/busybox init
rm halt shutdown reboot suspend
ln -s /bin/busybox halt
ln -s /bin/busybox shutdown
ln -s /bin/busybox reboot
ln -s /bin/busybox suspend
echo "*** Done"
echo
else
echo
echo "*** Aborting uninstall."
echo
fi
+2 -2
View File
@@ -1,4 +1,4 @@
SUBDIRS = finit.d
SUBDIRS = finit.d grub.d
docsdir := @docdir@/contrib/debian
docs_DATA = README.md finit.conf build.sh install.sh
docs_DATA = README.md finit.conf os-release build.sh install.sh
EXTRA_DIST = $(docs_DATA)
+7 -20
View File
@@ -20,42 +20,29 @@ tools pre-systemd work as intended.
root@debian:~# apt install initscripts console-setup
> **Note:** as of Debian 11 (Bullseye), libuev and libite are part of
> the main section of Debian. So just install the -dev packages :)
The following script can then be used to configure, build, install and
set up your system to run Finit:
user@debian:~/finit$ contrib/debian/build.sh
However, since `/sbin/init` already exists on your system, the script
creates another entry in your GRUB config by updating `$SUPPORTED_INITS`
in `/etc/grub.d/10_inux` and run `update-grub`. On reboot you will find
a (finit) entry in the "Advanced options for Debian GNU/Linux" section.
It is of course also possible to change the default init to Finit:
creates another entry in your GRUB config, in `/etc/grub.d/40_custom`,
where `init=/sbin/finit` is added to your kernel line. It is of course
also possible to change the default init to Finit, if you do you can
remove the custom Grub entry:
user@debian:~/finit# cd /sbin
user@debian:/sbin# sudo mv init oldinit
user@debian:/sbin# sudo rm init
user@debian:/sbin# sudo ln -s finit init
Before rebooting, check the default [/etc/finit.conf](finit.conf) and
`/etc/finit.d/*.conf` files. The build + install script above provides
a few sample `.conf` files. See `initctl ls` after boot for a list of
enabled and available services, you can then use `enable` and `disable`
comands to `initctl`, followed by `reload` to activate your changes.
a few sample `.conf` files. See `initctl list` after boot for a list of
enabled and available services.
You can also use a standard [/etc/rc.local](rc.local) for one-shot tasks
and initialization like keyboard language etc.
> **NOTE:** X Window system, you may need to `sudo apt install elogind`
> (Bullseye and later), followed by `initctl reload` to activate it (it
> is enabled by default), and logout/login again. The elogind daemon
> ensures a regular non-root user can start and interact with an X
> session, otherwise keyboard and mouse won't work. When you're happy,
> you can enable the lightdm.conf, change the default runlevel to 3, and
> presto! you have a desktop again.
Have fun!
/Joachim ツ
+8 -6
View File
@@ -21,12 +21,14 @@ echo
# The plugins are optional, but you may need D-Bus and X11 if you want
# to run X-Window, the other configure flags are however required.
./configure \
--prefix=/usr --exec-prefix= \
--sysconfdir=/etc --localstatedir=/var \
--enable-dbus-plugin --enable-x11-common-plugin \
--enable-alsa-utils-plugin --with-keventd \
--with-random-seed=/var/lib/urandom/random-seed
./configure \
--enable-rw-rootfs --enable-progress \
--enable-dbus-plugin --enable-x11-common-plugin \
--enable-alsa-utils-plugin --enable-inetd-echo-plugin \
--enable-inetd-chargen-plugin --enable-inetd-daytime-plugin \
--enable-inetd-discard-plugin --enable-inetd-time-plugin \
--with-random-seed=/var/lib/urandom/random-seed \
--with-heading="Debian GNU/Linux" --with-hostname="stretch"
if [ $? -ne 0 ]; then
echo
+1 -17
View File
@@ -5,22 +5,6 @@
# Default is 2
#runlevel 2
# Top-level cgroups and their default settings. All groups mandatory
# but more can be added, max 8 groups in total currently. The cgroup
# 'root' is also available, reserved for RT processes. Settings are
# as-is, only one shorthand 'mem.' exists, other than that it's the
# cgroup v2 controller default names.
#cgroup init cpu.weight:100
#cgroup user cpu.weight:100
#cgroup system cpu.weight:9700
# Task to run if ctrl-alt-del is pressed. This condition is asserted by
# Finit upon receiving SIGINT (from the kernel).
#task <sys/key/ctrlaltdel> [12345789] initctl reboot -- Rebooting system
# Task to run if the kernel gets a power fail condition is pressed.
# Asserted by Finit upon receiving SIGPWR (from the kernel).
#task <sys/pwr/fail> [12345789] initctl poweroff -- Shutting down system
## Bootstrap services and tasks
# Can be listed here or in /etc/finit.d/*.conf
+13 -10
View File
@@ -1,24 +1,27 @@
SUBDIRS = available
docsdir := @docdir@/contrib/debian/finit.d
d_LINKS = acpid.conf apparmor.conf avahi-daemon.conf \
bluetooth.conf console-setup.conf elogind.conf \
getty.conf keyboard-setup.conf modules.conf \
plymouth-quit.conf rsyslogd.conf sshd.conf
d_LINKS = console-setup.conf getty.conf keyboard-setup.conf \
modules.conf rsyslogd.conf sshd.conf
install-exec-hook:
@$(MKDIR_P) $(DESTDIR)$(docsdir)/available
@$(MKDIR_P) $(DESTDIR)$(docsdir)/enabled
@for file in $(d_LINKS); do \
lnk=$(DESTDIR)$(docsdir)/enabled/$$file; \
lnk=$(DESTDIR)$(docsdir)/$$file; \
src=available/$$file; \
rm -f $$lnk; \
$(LN_S) ../$$src $$lnk; \
if [ -L $$lnk ]; then \
echo "Skipping $$lnk exists."; \
else \
$(LN_S) $$src $$lnk; \
fi; \
done
uninstall-hook:
@for file in $(d_LINKS); do \
lnk=$(DESTDIR)$(docsdir)/enabled/$$file; \
lnk=$(DESTDIR)$(docsdir)/$$file; \
src=available/$$file; \
$(RM) -f $$lnk; \
if [ "`readlink $$lnk`" != "$$src" ]; then \
continue; \
fi; \
$(RM) $$lnk; \
done
+3 -6
View File
@@ -1,8 +1,5 @@
docsdir := @docdir@/contrib/debian/finit.d/available
docs_DATA = acpid.conf apparmor.conf avahi-daemon.conf bluetooth.conf \
console-setup.conf elogind.conf getty.conf \
keyboard-setup.conf lightdm.conf modules.conf sntpd.conf \
plymouth-quit.conf rsyslogd.conf sshd.conf syslogd.conf \
xdm.conf
docs_DATA = acpid.conf console-setup.conf getty.conf \
keyboard-setup.conf lightdm.conf modules.conf \
ntpclient.conf rsyslogd.conf sshd.conf xdm.conf
EXTRA_DIST = $(docs_DATA)
+2 -2
View File
@@ -1,3 +1,3 @@
# Handle PWR button to shutdown/reboot -- useful in Qemu (virt-manager)
# Depends on a syslog daemon having started. Redirect any output to log.
service [2345] <pid/syslogd> env:-/etc/default/acpid log acpid -f $OPTIONS -- ACPI daemon
# Depends on rsyslogd having started. Redirect any output to log.
service [2345] <svc/usr/sbin/rsyslogd> log /usr/sbin/acpid -f -- ACPI daemon
@@ -1 +0,0 @@
task [2345] <sys/pwr/ac,pid/syslogd> halt:usr1 env:-/etc/default/anacron anacron -d -q $ANACRON_ARGS -- Anacron jobs
@@ -1,2 +0,0 @@
sysv [S] /etc/init.d/apparmor -- AppArmor initialization
@@ -1 +0,0 @@
service [2345] env:-/etc/default/avahi-daemon avahi-daemon -s $AVAHI_DAEMON_OPTS -- Avahi mDNS/DNS-SD Stack
@@ -1,3 +0,0 @@
# To ignore errors like "org.freedesktop.hostname1", update the env file with
# "--noplugin=hostname", i.e. append to BLUETOOTHD_OPTS
service [2345] log:null env:-/etc/default/bluetooth /usr/libexec/bluetooth/bluetoothd -n $BLUETOOTHD_OPTS -- Bluetooth service
@@ -1 +0,0 @@
service [2345] <sys/pwr/ac,pid/syslogd> env:-/etc/default/cron cron -f $EXTRA_OPTS -- Background job processing daemon
@@ -1,4 +0,0 @@
# On some systems, bootstrap can be really quick and cause elogind
# to not start before a user has managed to log in. To prevent
# this, add <pid/elogind> as condition to your TTYs in getty.conf
service [2345] <pid/syslogd> /lib/elogind/elogind -- Login manager
+3 -6
View File
@@ -1,7 +1,4 @@
# Consoles to start getty on when system is up
tty [12345] /dev/tty1 linux noclear nowait
tty [2345] /dev/tty2 linux nowait
tty [2345] /dev/tty3 linux nowait
tty [2345] /dev/tty4 linux nowait
tty [2345] /dev/tty5 linux nowait
tty [2345] /dev/tty6 linux nowait
tty [12345] /dev/tty1 115200 vt100 noclear nowait
tty [2345] /dev/tty2 38400 linux noclear nowait
tty [2345] /dev/tty3 38400 linux noclear nowait
@@ -1 +1 @@
service [3] lightdm -- Light Display Manager
service [3] /usr/sbin/lightdm -- Light Display Manager
@@ -1,8 +1,8 @@
## Linux kernel modules to load
#module fbcon
#module button
#module evdev
#module loop
#module psmouse
#module mousedev
#module 8139cp
module button
module evdev
module loop
module psmouse
module mousedev
module 8139cp
@@ -0,0 +1,2 @@
# Simple NTP client (SNTP)
service [2345] <net/route/default> /usr/sbin/ntpclient -n -L pool.ntp.org -- SNTP client
@@ -1,2 +0,0 @@
# Need to stop plymouth, or it'll block stdin on tty1
task [S] /usr/bin/plymouth quit -- Stopping Plymouth Boot Screen
@@ -1,3 +1,2 @@
# Start rsyslogd as soon as possible, should always run
# Provides pid/syslogd condition
service [S12345] name:syslogd env:-/etc/default/rsyslog rsyslogd -n $RSYSLOGD_OPTIONS -- Reliable syslog daemon
service [S12345] /usr/sbin/rsyslogd -n -- Reliable and extended syslog daemon
@@ -1,2 +0,0 @@
# Simple NTP client (SNTP)
service [2345] <net/route/default> env:-/etc/default/sntpd sntpd -n $SNTPD_OPTIONS -- SNTP client
+1 -1
View File
@@ -1,2 +1,2 @@
# 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
service [2345] <net/lo/up> /usr/sbin/sshd -D -- OpenSSH daemon
@@ -1,2 +0,0 @@
# Start sysklogd as soon as possible, should always run if enabled
service [S123456789] env:-/etc/default/syslogd syslogd -F $SYSLOGD_OPTIONS -- System logging daemon
+2 -2
View File
@@ -1,4 +1,4 @@
# Here we use XDM since it has few dependencies (relatively speaking).
# It is also an example of a service without a -- description.
# service [3] lxdm -- Lightweight Login Manager
service [3] xdm -nodaemon -- X Display Manager
# service [3] /usr/sbin/lxdm -- Lightweight Login Manager
service [3] /usr/bin/xdm -nodaemon
+1
View File
@@ -0,0 +1 @@
available/console-setup.conf
+1
View File
@@ -0,0 +1 @@
available/getty.conf
+1
View File
@@ -0,0 +1 @@
available/keyboard-setup.conf
+1
View File
@@ -0,0 +1 @@
available/modules.conf
+1
View File
@@ -0,0 +1 @@
available/rsyslogd.conf
+1
View File
@@ -0,0 +1 @@
available/sshd.conf
+14
View File
@@ -0,0 +1,14 @@
#!/bin/sh
exec tail -n +3 $0
# This file provides an easy way to add custom menu entries. Simply type the
# menu entries you want to add after this comment. Be careful not to change
# the 'exec tail' line above.
menuentry '$MENU with Finit' --class $TYPE --class gnu-linux --class gnu --class os --user {
insmod gzio
insmod part_msdos
insmod ext2
search --no-floppy --fs-uuid --set=root $BOOT
linux /vmlinuz root=UUID=$ROOT ro quiet init=/sbin/finit
initrd /initrd.img
}
+3
View File
@@ -0,0 +1,3 @@
docsdir := @docdir@/contrib/debian/grub.d
docs_DATA = 40_custom
EXTRA_DIST = $(docs_DATA)
+11 -19
View File
@@ -8,10 +8,10 @@ if [ "x`id -u`" != "x0" ]; then
fi
# Adjust base directory
grep -q debian Makefile 2>/dev/null
grep -q Debian os-release 2>/dev/null
if [ $? -eq 0 ]; then
cd ../..
elif [ ! -e configure.ac ]; then
elif [ ! -e autogen.sh ]; then
echo "*** Please run this script from the Finit base directory."
exit 1
fi
@@ -23,7 +23,7 @@ echo "/sbin/finit - PID 1"
echo "/lib/finit/plugins/* - All enabled Finit plugins"
echo "/etc/finit.conf - Finit configuration file"
echo "/etc/finit.d/ - Finit services"
echo "/etc/grub.d/10_linux - Add Finit to Grub's SUPPORTED_INITS"
echo "/etc/grub.d/40_custom - Add menu entry to the Grub boot loader"
echo
read -p "Do you want to continue (y/N)? " yorn
echo
@@ -31,25 +31,17 @@ echo
if [ "x$yorn" = "xy" -o "x$yorn" = "xY" ]; then
echo "Installing Finit files ..."
make install
cd /usr/share/doc/finit/contrib/debian
for file in finit.conf; do
install -vbD $file /etc/$file
done
cd `dirname $0`
install -vbD finit.conf /etc/finit.conf
cp -va finit.d /etc/
echo "*** Setting up a GRUB boot entry ..."
fn=/etc/grub.d/10_linux
if [ -e $fn ]; then
if `grep SUPPORTED_INITS $fn |head -1 |grep -q finit`; then
echo "Already installed, done."
else
echo "Adding Finit to list of SUPPORTED_INITS ..."
sed -i 's/SUPPORTED_INITS="[^"]*/& finit:\/sbin\/finit/' $fn
update-grub
fi
else
echo "Cannot find $fn, you'll have to set up your bootloader on your own."
fi
MENU=`grep gnu-linux /boot/grub/grub.cfg |head -1 |sed "s/menuentry '\([^']*\).*/\1/"`
TYPE=`grep gnu-linux /boot/grub/grub.cfg |head -1 |sed "s/.*' --class \([a-z]*\).*/\1/"`
BOOT=`grep set=root /boot/grub/grub.cfg |head -1 |sed 's/.* \([a-f0-9]*-[a-f0-9]*-[a-f0-9]*-[a-f0-9]*-[a-f0-9]*\).*/\1/'`
ROOT=`grep root=UUID /boot/grub/grub.cfg |head -1 |sed 's/.*UUID=\([a-f0-9]*-[a-f0-9]*-[a-f0-9]*-[a-f0-9]*-[a-f0-9]*\).*/\1/'`
cat grub.d/40_custom | sed "s,\$BOOT,$BOOT,;s,\$ROOT,$ROOT,;s,\$TYPE,$TYPE,;s,\$MENU,$MENU," >/etc/grub.d/40_custom
update-grub
echo
echo "*** Done"
+8
View File
@@ -0,0 +1,8 @@
PRETTY_NAME="Debian GNU/Linux 8 (jessie)"
NAME="Debian GNU/Linux"
VERSION_ID="8"
VERSION="8 (jessie)"
ID=debian
HOME_URL="http://www.debian.org/"
SUPPORT_URL="http://www.debian.org/support"
BUG_REPORT_URL="https://bugs.debian.org/"
+17 -42
View File
@@ -2,24 +2,15 @@
#
host testbed
# Devices to fsck at boot
check /dev/vda1
# Linux kernel modules to load
module button
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
@@ -28,21 +19,13 @@ 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
tty /dev/tty2
tty /dev/tty3
# Task to run if ctrl-alt-del is pressed. This condition is asserted by
# Finit upon receiving SIGINT (from the kernel).
task <sys/key/ctrlaltdel> [12345789] initctl reboot -- Rebooting system
# Task to run if the kernel gets a power fail condition is pressed.
# Asserted by Finit upon receiving SIGPWR (from the kernel).
task <sys/pwr/fail> [12345789] initctl poweroff -- Shutting down system
# Alternative method instead of runparts
#task [S] /etc/init.d/keyboard-setup start -- Setting up preliminary keymap
#task [S] /etc/init.d/acpid start -- Starting ACPI Daemon
@@ -50,36 +33,28 @@ task <sys/pwr/fail> [12345789] initctl poweroff -- Shutting down system
#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
# 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
service [2345] /sbin/klogd -n -- Kernel logging server
service [2345] /sbin/syslogd -n -- Syslog server
service [3] /usr/sbin/gdm -- GNOME Display Manager
# 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
# log file is rotated with the above settings. The condition declares
# a dependency on a system default route (gateway) to be set. A single
# <!> at the beginning means ntpd does not respect SIGHUP for restart.
service [2345] <!net/route/default> log:/var/log/ntpd.log ntpd -n -l -I eth0 -- NTP daemon
service [2345] log:/var/log/ntpd.log <!net/route/default> /sbin/ntpd -n -l -I eth0 -- NTP daemon
# Run start scripts from this directory
# runparts /etc/start.d
# Inetd services
inetd time/udp wait [2345] internal -- UNIX rdate service
inetd time/tcp nowait [2345] internal -- UNIX rdate service
inetd ssh@eth0:222/tcp nowait [2345] /usr/sbin/sshd -i -- SSH service
inetd ssh/tcp nowait [2345] /usr/sbin/sshd -i -- SSH service
# For multiple instances of the same service, add :ID somewhere between
# the service/run/task keyword and the command.
service :80 [2345] /sbin/httpd -f -h /http -p 80 -- Web server
service :8080 [2345] /sbin/httpd -f -h /http -p 8080 -- Old web server
service :1 [2345] /sbin/httpd -f -h /http -p 80 -- Web server
service :2 [2345] /sbin/httpd -f -h /http -p 8080 -- Old web server
-15
View File
@@ -1,15 +0,0 @@
# This is a basic /etc/fstab that mounts up all of the virtual filesystems
# that older versions of Finit used to mount internally. It can serve as a
# starting point for systems running Busybox's mount implementation. Make
# sure that CONFIG_FEATURE_MOUNT_HELPERS enabled; as this is required
# create the /dev/{pts,shm} directories.
devtmpfs /dev devtmpfs defaults 0 0
mkdir#-p /dev/pts helper none 0 0
devpts /dev/pts devpts mode=620,ptmxmode=0666 0 0
mkdir#-p /dev/shm helper none 0 0
tmpfs /dev/shm tmpfs mode=0777 0 0
proc /proc proc defaults 0 0
tmpfs /tmp tmpfs mode=1777,nosuid,nodev 0 0
tmpfs /run tmpfs mode=0755,nosuid,nodev 0 0
sysfs /sys sysfs defaults 0 0
+1 -1
View File
@@ -1,4 +1,4 @@
SUBDIRS = finit.d
docsdir := @docdir@/contrib/void
docs_DATA = README.md finit.conf build.sh install.sh rc.local
docs_DATA = README.md finit.conf build.sh install.sh rc.local xbps
EXTRA_DIST = $(docs_DATA)
+6 -5
View File
@@ -14,11 +14,12 @@ fi
# The plugins are optional, but you may need D-Bus and X11 if you want
# to run X-Window, the other configure flags are however required.
PKG_CONFIG_LIBDIR=/usr/lib/pkgconfig:/usr/local/lib/pkgconfig ./configure \
--prefix=/usr --exec-prefix= \
--sysconfdir=/etc --localstatedir=/var \
--enable-dbus-plugin --enable-x11-common-plugin \
--enable-alsa-utils-plugin --with-watchdog \
--with-keventd
--enable-rw-rootfs --enable-progress \
--enable-dbus-plugin --enable-x11-common-plugin \
--enable-alsa-utils-plugin --enable-inetd-echo-plugin \
--enable-inetd-chargen-plugin --enable-inetd-daytime-plugin \
--enable-inetd-discard-plugin --enable-inetd-time-plugin \
--with-heading="Void Linux" --with-hostname=void
echo
echo "*** Building ..."
-17
View File
@@ -5,22 +5,5 @@
# Default is 2
#runlevel 2
# Top-level cgroups and their default settings. All groups mandatory
# but more can be added, max 8 groups in total currently. The cgroup
# 'root' is also available, reserved for RT processes. Settings are
# as-is, only one shorthand 'mem.' exists, other than that it's the
# cgroup v2 controller default names.
#cgroup init cpu.weight:100
#cgroup user cpu.weight:100
#cgroup system cpu.weight:9700
# Task to run if ctrl-alt-del is pressed. This condition is asserted by
# Finit upon receiving SIGINT (from the kernel).
#task <sys/key/ctrlaltdel> [12345789] initctl reboot -- Rebooting system
# Task to run if the kernel gets a power fail condition is pressed.
# Asserted by Finit upon receiving SIGPWR (from the kernel).
#task <sys/pwr/fail> [12345789] initctl poweroff -- Shutting down system
## Bootstrap services and tasks
# Can be listed here or in /etc/finit.d/*.conf
+11 -6
View File
@@ -4,18 +4,23 @@ d_LINKS = acpid.conf dhcpcd.conf getty.conf sshd.conf uuidd.conf
install-exec-hook:
@$(MKDIR_P) $(DESTDIR)$(docsdir)/available
@$(MKDIR_P) $(DESTDIR)$(docsdir)/enabled
@for file in $(d_LINKS); do \
lnk=$(DESTDIR)$(docsdir)/enabled/$$file; \
lnk=$(DESTDIR)$(docsdir)/$$file; \
src=available/$$file; \
rm -f $$lnk; \
$(LN_S) ../$$src $$lnk; \
if [ -L $$lnk ]; then \
echo "Skipping $$lnk exists."; \
else \
$(LN_S) $$src $$lnk; \
fi; \
done
uninstall-hook:
@for file in $(d_LINKS); do \
lnk=$(DESTDIR)$(docsdir)/enabled/$$file; \
lnk=$(DESTDIR)$(docsdir)/$$file; \
src=available/$$file; \
$(RM) -f $$lnk; \
if [ "`readlink $$lnk`" != "$$src" ]; then \
continue; \
fi; \
$(RM) $$lnk; \
done
+1
View File
@@ -0,0 +1 @@
available/acpid.conf
+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 lxdm.conf modules.conf ntpd.conf \
sshd.conf syslog.conf uuidd.conf
keymap.conf klogd.conf lxdm.conf modules.conf ntpd.conf \
sshd.conf syslogd.conf uuidd.conf
EXTRA_DIST = $(docs_DATA)
+1 -1
View File
@@ -1,3 +1,3 @@
# Handle PWR button to shutdown/reboot -- useful in Qemu (virt-manager)
# Depends on syslogd having started. Redirect any output to log.
service [2345] acpid -f -- ACPI daemon
service [2345] /sbin/acpid -f -- ACPI daemon
+1 -1
View File
@@ -1 +1 @@
service [2345] <pid/syslogd> crond -f -S -c /etc/crontabs -- Cron daemon
service [2345] <svc/sbin/syslogd> /usr/sbin/crond -f -S -c /etc/crontabs -- Cron daemon
+1 -1
View File
@@ -1 +1 @@
service [2345] dhcpcd -B -M -- DHCP client
service [2345] /usr/sbin/dhcpcd -B -M -- DHCP client
+1 -1
View File
@@ -1 +1 @@
service [S12345] dmeventd -f -- Device mapper event daemon
service [S12345] /sbin/dmeventd -f -- Device mapper event daemon
+3 -3
View File
@@ -1,4 +1,4 @@
# Consoles to start Finit built-in 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 /dev/tty1 noclear nowait
tty /dev/tty2 noclear nowait
tty /dev/tty3 noclear nowait
@@ -0,0 +1,2 @@
# Start klogd as soon as possible, should always run
service [S12345] /sbin/klogd -n -- Kernel log daemon
+1 -1
View File
@@ -1 +1 @@
service [2345] lxdm -- Lightweight Login Manager
service [2345] /usr/sbin/lxdm -- Lightweight Login Manager
+4 -5
View File
@@ -1,7 +1,6 @@
## Linux kernel modules to load
#module fbcon
#module button
#module evdev
#module mousedev
#module 8139cp
module softdog
module button
module evdev
module mousedev
module 8139cp
+1 -1
View File
@@ -1,2 +1,2 @@
# Silly Busybox ntpd has no option to use syslog when running in foreground
service [2345] <pid/syslogd> log ntpd -n -N -p pool.ntp.org -- NTP daemon
service [2345] log <svc/sbin/syslogd> /usr/sbin/ntpd -n -N -p pool.ntp.org -- NTP daemon
+1 -1
View File
@@ -1,2 +1,2 @@
# Start SSH daemon as soon as basic networking comes up
service [2345] /usr/sbin/sshd -D -- OpenSSH daemon
service [2345] <net/lo/up> /usr/sbin/sshd -D -- OpenSSH daemon
@@ -1,4 +0,0 @@
# 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
@@ -0,0 +1,2 @@
# Start syslogd as soon as possible, should always run
service [S12345] /sbin/syslogd -n -- Syslog daemon
+1 -1
View File
@@ -1 +1 @@
service @uuidd:uuidd [2345] uuidd -F -- UUID generation daemon
service @uuidd:uuidd [2345] /sbin/uuidd -F -- UUID generation daemon
+1
View File
@@ -0,0 +1 @@
available/dhcpcd.conf
+1
View File
@@ -0,0 +1 @@
available/getty.conf
+1
View File
@@ -0,0 +1 @@
available/sshd.conf
+1
View File
@@ -0,0 +1 @@
available/uuidd.conf
+3 -4
View File
@@ -8,10 +8,9 @@ if [ "x`id -u`" != "x0" ]; then
fi
# Adjust base directory
grep -q void Makefile 2>/dev/null
if [ $? -eq 0 ]; then
if [ -e xbps ]; then
cd ../..
elif [ ! -e configure.ac ]; then
elif [ ! -e autogen.sh ]; then
echo "*** Please run this script from the Finit base directory."
exit 1
fi
@@ -31,7 +30,7 @@ if [ "x$yorn" = "xy" -o "x$yorn" = "xY" ]; then
echo
echo "*** Installing Finit files ..."
make install
cd /usr/share/doc/finit/contrib/void
cd `dirname $0`
for file in finit.conf rc.local; do
install -vbD $file /etc/$file
done
View File
-4
View File
@@ -1,4 +0,0 @@
docsdir := @docdir@/doc
docs_DATA = config.md conditions.md distro.md plugins.md \
service.md signals.md svc-machine.png cmdline.md
EXTRA_DIST = $(docs_DATA)
-56
View File
@@ -1,56 +0,0 @@
Goals of Finit
==============
Initially Finit aimed to be more than a processes monitor, acting as a
replacement for cron/at and inetd as well. Over time, however, the true
value in the project turned out to be:
> A simple SysV init and systemd replacement, primarily for embedded
> systems, container, and dedicated server applications.
Misc TODOs
----------
Some of these are also registered in the issue tracker on GitHub.
* Refactor the .conf parser, parse user input in a separate process
* Move process monitor to separate process (same as parser?)
* 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
* 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
As of Finit v4.1 SIGPWR generates <sys/power/fail> condition and it
is up to a task to check why and take appropriate action.
* Add `finit.conf` support for ctrl-alt-delete (SIGINT) and kbrequest,
i.e. KeyboardSignal, (SIGWINCH) behavior. Using conditions to a task,
e.g, <sys/key/ctrlaltdel> and <sys/key/signal> like SIGPWR handling.
As of Finit v4.1 SIGINT generates <sys/key/ctrlaltdel>, but there is
no check if the signal actually originates from the kernel. To get
this verification, a new libuEv release is needed. As of June 6 -21
that functionality is not yet released.
Initctl
-------
* 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`
* Add support for `-s` to redirect all output to syslog, for scripting
Init
----
Finit in itself is not SysV Init compatible, it doesn't use `/etc/rc.d`
and `/etc/init.d` scripts to boot the system. However, a plausible way
to achieve compatibility would be to add a plugin to finit which reads
`/etc/inittab` to be able to start standard Linux systems.
-50
View File
@@ -1,50 +0,0 @@
Tips & Tricks with the kernel cmdline
=====================================
This document summarizes the different boot parameters that can be
passed on the Linux kernel command line. Not limited to Finit.
The `bool` setting is one of `on, off, true false, 1, 0`.
> **NOTE:** remember to use `--` to separate kernel parameters from
> parameters to init. E.g., `init=/sbin/finit -- finit.debug rescue`
* `debug`: Enable kernel debug. Debug messages are printed to the
console until Finit starts up.
* `finit.debug[=bool]`: Enable finit debug. This is operated
independently of the kernel debug setting. New as of Finit v4.
* `finit.show_status[=bool]`: Control finit boot progress, including
banner.
* `finit.status_style=<classic,modern>`: Set Finit boot progress style,
when enabled.
* `init=/bin/sh`: Bypass system default init and tell kernel to start a
shell. Note, this shell is very limited and does not support
signals and has no job control. Recommend using, and modifying,
`rescue` mode instead.
* `panic=SEC`: By default the kernel does not reboot after a kernel
panic. This setting will cause a kernel reboot after SEC seconds.
* `quiet`: Suppress kernel logging to console, except for warnings and
errors.
* `rescue`: Start rescue/maintenance mode. If your system comes with
the bundled `sulogin` program (Finit, or from util-linux/Busybox),
you will be given a root login to a maintenance shell. However, if
`sulogin` is missing, the file `/lib/finit/rescue.conf` is read and
the system booted in a limited fallback mode. See [config.md][]
for more information.
* `single`, or `S`: Single user mode, runlevel 1, in Finit. Useful to
debug problems with the regular runlevel. All services and TTYs in
`[1]` will be started, so a `tty [1] @console nologin` configuration
presents you with a root console without login.
For more on kernel boot paramaters, see the man page [bootparam(7)][].
[config.md][]: config.md#rescue-mode
[bootparam(7)]: https://www.man7.org/linux/man-pages/man7/bootparam.7.html
-233
View File
@@ -1,233 +0,0 @@
Finit Conditions
================
![The service state machine](svc-machine.png "The service state machine")
* [Introduction](#introduction)
* [Triggering](#triggering)
* [Built-in Conditions](#built-in--conditions)
* [Debugging](#debugging)
* [Internals](#internals)
Introduction
------------
Conditions are a new addition to Finit, introduced in v3, with the
intention of providing a mechanism for common synchronization problems.
For example:
- *"wait for service A to start before starting service B"*, or
- *"wait for basic network access to be available"*
Conditions are similar in syntax to declaring runlevels per service.
They are specified within angle brackets `<>` and can be applied to any
of the `service`, `task`, or `run` stanza. Multiple conditions may be
specified separated by comma. Multiple conditions are logically AND'ed
during evaluation, i.e. all conditions must be satisfied in order for a
service to run.
### Example
service [2345] <pid/setupd,pid/zebra> /sbin/netd -- Network monitor
In this example the Network monitor daemon `netd` is not started until
both the `pid/setupd` *and* `pid/zebra` conditions are satisfied. A
`pid/` condition is satisfied by the corresponding service's PID file
being created.
**NOTE:** Conditions also stop services when a condition is no longer
asserted. I.e., if the Zebra process above stops or restarts, netd
will also stop or restart.
Triggering
----------
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
`flux` state, meaning the condition's state is unknown. (For more info
on this, see [Internals](#internals).) Thus, after a reconfiguration it
is up to the "owner" of the condition to convey the new (or possibly
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
-------------------
Finit comes with a set of plugins for conditions: `pidfile`, `netlink`,
`sys`, and `usr`. The `pidfile` plugin (recursively) watches `/run/`
(recursively) for PID files created by the monitored services, and sets
a corresponding condition in the `pid/` namespace. Similarily, the
`netlink` plugin provides basic conditions for when an interface is
brought up/down and when a default route (gateway) is set, in the `net/`
namespace. The `sys` and `usr` plugins monitor are passive condition
monitors where the action is provided by `keventd`, signal handlers,
and in the case of `usr`, the end-user via the `initctl` tool
With the example listed above, finit does not start the `/sbin/netd`
daemon until `setupd` and `zebra` has started *and* created their PID
files. Which they do when they have completed their initial set up and
are ready to receive signals.
Finit expects monitored services to touch their PID files, i.e. update
the mtime, when they reload their configuration files after a `SIGHUP`.
Some services do not support `SIGHUP` and are instead restarted, which
is a crude but effective way to have the PID file touched (re-created).
Built-in conditions:
- `pid/<SERVICE>`
- `net/route/default`
- `net/<IFNAME>/exist`
- `net/<IFNAME>/up`
- `net/<IFNAME>/running`
- `sys/pwr/ac`
- `sys/pwr/fail`
- `sys/key/ctrlaltdel`
- `usr/foo`
**Note:** `up` means administratively up, the interface flag `IFF_UP`.
`running` is the `IFF_RUNNING` flag, meaning operatively up. The
difference is that `running` tells if the NIC has link.
Composition
-----------
The `pid/` conditions are generated by the Finit `pidfile.so` plugin and
composed from a service's `name:` and `:id`. By default the basename of
the daemon and the empty string.
| **service** | **condition** |
|----------------------------------------------------|------------------|
| /sbin/foo | pid/foo |
| /sbin/bar -p /run/baz.pid | pid/bar |
| name:lxc :foo lxc-start -n foo -p /run/lxc/foo.pid | pid/lxc:foo |
| /usr/bin/dbus-daemon | pid/dbus-daemon |
| :222 dropbear -p 222 | pid/dropbear:222 |
The condition is asserted when `pidfile.so` receives an inotify event
for a file matching `/run/*.pid`, `/run/**/*.pid`, or `/run/**/pid`,
which contains the PID of the service Finit has started.
When Finit configuration files are changed and the `initctl reload`
command is called, it is expected of services to touch their PID files
for Finit to reassert their conditions.
Daemons that don't create PID files, or fail to touch them on reload,
can be worked around by using the `pid:/path/to/file.pid` syntax in
the service stanza for the daemon. It is far from optimal since any
synchronization of depending services may fail due to the daemon not
having reinitialized/created their IPC sockets, or similar.
> **Note:** in versions of Finit prior to v4, the PID conditions were
> called 'svc' conditions, and they were far more complex.
Debugging
---------
If a service is not being started as it should, the problem might be
that one of its conditions is not in the expected state. Use the
command `initctl status` to inspect service status. Services in the
`ready` state are pending a condition.
In that situation, running `initctl cond show` reveals which of the
conditions that are not satisfied. Listed as `off` below.
**Example:**
```shell
~ # initctl cond show
PID IDENT STATUS CONDITION (+ ON, ~ FLUX, - OFF)
=======================================================================
1419 /sbin/netd on <+pid/setupd,+pid/zebra>
0 /sbin/udhcpc off <-net/vlan1/exist>
```
Here we can see that `netd` is allowed to run since both its conditions
are in the `on` state, as indicated by the `+`-prefix. `udhcpc` however
is not allowed to run since `net/vlan1/exist` condition is not satsifed.
As indicated by the `-`-prefix.
To fake interface `vlan1` suddenly appearing, and test what happens to
`udhcpc` we can enable debug mode and assert the condition, like this:
```shell
~ # initctl debug
~ # mkdir -p /var/run/finit/cond/net/vlan1
~ # cp /var/run/finit/cond /var/run/finit/cond/net/vlan1/exist
```
Then watch the console for the debug messages and then check the output
from `initctl cond show` again. The client will likely have failed to
start, but at least the condition is now satisfied.
There is also the `initctl cond dump` command, which dumps all known
conditions, their current status, and their origin.
Internals
---------
As shown previously, conditions are implemented as simple files in the
file system, in the `/var/run/finit/cond/` sub-directory. The files
are created, updated, and removed by condition plugins. To debug them,
see the previous section.
A condition is always in one of three states:
* ` on` (+): The condition is asserted.
* ` off` (-): The condition is deasserted.
* `flux` (~): The conditions state is unknown.
All conditions that have not explicitly been set are interpreted as
being in the `off` state.
When a reconfiguration is requested, Finit transitions all conditions to
the `flux` state. As a result, services that depend on a condition are
sent `SIGSTOP`. Once the new state of the condition is asserted, the
service receives `SIGCONT`. If the condition is no longer satisfied the
service will then be stopped, otherwise no further action is taken.
This STOP/CONT handling minimizes the number of unnecessary service
restarts that would otherwise occur because a depending service was sent
`SIGHUP` for example.
Therefore, any plugin that supplies Finit with conditions must ensure
that their state is updated after each reconfiguration. This can be
done by binding to the `HOOK_SVC_RECONF` hook. For an example of how
to do this, see `plugins/pidfile.c`.

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