mirror of
https://github.com/troglobit/finit.git
synced 2026-10-12 10:12:32 +00:00
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8f1c16a8a5 | ||
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b149dbc73e |
@@ -0,0 +1,3 @@
|
||||
[submodule "libuev"]
|
||||
path = libuev
|
||||
url = https://github.com/troglobit/libuev.git
|
||||
+2
-2
@@ -13,9 +13,9 @@ addons:
|
||||
coverity_scan:
|
||||
project:
|
||||
name: "troglobit/finit"
|
||||
description: "finit | Fast Init Replacement"
|
||||
description: "finit | Fast & Extensible init for Linux"
|
||||
notification_email: troglobit@gmail.com
|
||||
build_command: "make"
|
||||
branch_pattern: master
|
||||
branch_pattern: dev
|
||||
|
||||
script: make
|
||||
|
||||
+278
@@ -0,0 +1,278 @@
|
||||
Change Log
|
||||
==========
|
||||
|
||||
All notable changes to the project are documented in this file.
|
||||
|
||||
|
||||
[1.11] - 2015-01-24
|
||||
-------------------
|
||||
|
||||
The [libuEv] release.
|
||||
|
||||
### Changes
|
||||
* Now using the asynchronous libuEv library for handling all events:
|
||||
signals, timers and listening to sockets or file descriptors.
|
||||
* Rename NEWS.md --> CHANGELOG.md, with symlinks for `make install`
|
||||
* Attempt to align with http://keepachangelog.com/ for this file.
|
||||
* Travis CI now only invokes Coverity Scan from the 'dev' branch. This
|
||||
means that all development, except documentation updates, must go into
|
||||
that branch.
|
||||
|
||||
### Fixes
|
||||
* Fix bug with finit dying when no `tty` is defined in `finit.conf`, now
|
||||
even the fallback shell has control over its TTY, see fix in GIT
|
||||
commit [dea3ae8] for this.
|
||||
|
||||
|
||||
[1.10] - 2014-11-27
|
||||
-------------------
|
||||
Major bug fix release.
|
||||
|
||||
### Changes
|
||||
* Project now relies on static code analysis from Coverity, so this
|
||||
release contains many serious bug fixes.
|
||||
* Convert to use Markdown for README, NEWS and TODO.
|
||||
* Serious update to README and slight pruning of finished TODO items.
|
||||
|
||||
### Fixes
|
||||
* Fix serious file descriptor and memory leaks in the following
|
||||
functions. In particular the leaks in `run_interactive()` are very
|
||||
serious since that function is called every time a service is started
|
||||
and/or restarted! For details, see the GIT log:
|
||||
* `helpers.c:run()`
|
||||
* `helpers.c:run_interactive()`
|
||||
* `helpers.c:set_hostname()`
|
||||
* `helpers.c:procname_kill()`
|
||||
* `svc.c:svc_start()`: Fix swapped arguments to dup2() and add close(fd)
|
||||
to prevent descriptor leak.
|
||||
* `svc.c:svc_start()`: Fix out of bounds write to local stack variable,
|
||||
wrote off-by-one outside array.
|
||||
* Several added checks for return values to `mknod()`, `mkdir()`,
|
||||
`remove()`, etc.
|
||||
|
||||
|
||||
[1.9] - 2014-04-21
|
||||
------------------
|
||||
|
||||
### Changes
|
||||
* Add support for an include directive to `.conf` files
|
||||
* Fallback to `/bin/sh` if user forgets tty setting
|
||||
* Initial support for restarting lost services during `norespwan`
|
||||
|
||||
### Fixes
|
||||
* Bug fixes, code cleanup
|
||||
* Handle `SIGHUP` from service callback properly when switching runlevel
|
||||
* Misc. major (memleak) and minor fixes and additions to `libite/lite.h`
|
||||
|
||||
|
||||
[1.8] - 2013-06-07
|
||||
------------------
|
||||
|
||||
### Changes
|
||||
* Support for runlevels, with a bootstrap runlevel 'S'
|
||||
* Support for saving previous and current runlevel to UTMP
|
||||
* Support for new `finit.conf` commands: run, task, and runlevel
|
||||
* Support for tty and console commands in `finit.conf`, like services
|
||||
but for launching multiple getty logins
|
||||
* New tty plugin to monitor TTYs coming and going, like USB TTYs
|
||||
|
||||
### Fixes
|
||||
* Bugfixes to libite
|
||||
|
||||
|
||||
[1.7] - 2012-10-08
|
||||
------------------
|
||||
|
||||
### Changes
|
||||
* Show `__FILE__` in `_d()` debug messages, useful for plugins with
|
||||
similarily named callbacks. Also, only in debug mode anyway
|
||||
* Make sure to cleanup recorded PID when a service is lost. Required by
|
||||
service plugins for their callbacks to work.
|
||||
* Only clear screen when in verbose mode. Maybe this should be removed
|
||||
altogether?
|
||||
|
||||
### Fixes
|
||||
* Bugfix: Do not `free()` static string in `finit.conf` parser
|
||||
|
||||
|
||||
[1.6] - 2012-10-06
|
||||
------------------
|
||||
|
||||
### Changes
|
||||
* Skip `.` and `..` in plugin loader and display error when failing to
|
||||
load plugins
|
||||
* Support for overriding `/etc/finit.d` with `runparts DIR` in
|
||||
`finit.conf`
|
||||
* Revoke support for starting services not starting with a slash.
|
||||
* Prevent endless restart of non-existing services in `finit.conf`
|
||||
* Support for sysvinit style startstop scripts in `/etc/finit.d`
|
||||
|
||||
### Fixes
|
||||
* Minor fix to alsa-utils plugin to silence on non-existing cards
|
||||
|
||||
|
||||
[1.5] - 2012-10-03
|
||||
------------------
|
||||
|
||||
### Changes
|
||||
* Use bootmisc plugin to setup standard FHS 2.3 structure in `/var`
|
||||
* Added `FLOG_WARN()` syslog macro, for plugins
|
||||
* Add plugin dependency resolver. Checks `plugin_t` for `.depends`
|
||||
|
||||
|
||||
[1.4] - 2012-10-02
|
||||
------------------
|
||||
|
||||
### Changes
|
||||
* Start refactoring helpers.c into a libite.so (-lite). This means
|
||||
other user space applications/daemons can make use of the neat toolbox
|
||||
available in finit
|
||||
* Use short-form -s/-w -u to work with BusyBox hwclock as well
|
||||
* Use RTLD_GLOBAL flag to tell dynamic loader to load dependent .so
|
||||
files as well. Lets other plugins use global symbols.
|
||||
* Greatly simplify svc hook for external plugins and cleanup plugin API.
|
||||
* And more ... see the GIT log for more details.
|
||||
|
||||
### Fixes
|
||||
* Fix I/O plugin watcher and load plugins earlier for a new hook
|
||||
|
||||
|
||||
[1.3] - 2012-09-28
|
||||
------------------
|
||||
|
||||
### Changes
|
||||
* Cleanup public plugin API a bit and add new pid/pidfile funcs
|
||||
* Add plugin hook to end of service startup
|
||||
* Remove finit.h from svc.h, plugins should not need this.
|
||||
* Move utility macros etc. to helpers.h
|
||||
* Make `finit.h` daemon internal, only
|
||||
* Move defines of FIFO, conf and rcS.d to Makefile => correct paths
|
||||
* Add support for installing required headers in system include dir
|
||||
* Better support for distributions and packagers with install-exec,
|
||||
install-data, and install-dev targets in Makefile. Useful if you want
|
||||
to call targets with different `$DESTDIR`!
|
||||
* Makefile fixes for installation, paths encoded wrong
|
||||
* Strip binaries + .so files, support for `$(CROSS)` toolchain strip
|
||||
* Default install is now to `/sbin/finit` and `/usr/`
|
||||
* Note change in `$PLUGIN_DIR` environemnt variable to `$plugindir`
|
||||
|
||||
|
||||
[1.2] - 2012-09-27
|
||||
------------------
|
||||
|
||||
### Changes
|
||||
* Update README with section on building and enviroment variables
|
||||
|
||||
### Fixes
|
||||
* Fix installation paths encoded in finit binary
|
||||
|
||||
|
||||
[1.1] - 2012-09-27
|
||||
------------------
|
||||
|
||||
### Changes
|
||||
* Rename signal.[ch]-->sig.[ch] to avoid name clash w/ system headers
|
||||
|
||||
### Fixes
|
||||
* Build fixes for ARM eabi/uClibc
|
||||
|
||||
|
||||
[1.0] - 2012-09-26
|
||||
------------------
|
||||
|
||||
### Changes
|
||||
* New plugin based system for all odd extensions
|
||||
* New service monitor that restarts services if they die
|
||||
* New maintainer at GitHub http://github.com/troglobit/finit
|
||||
* Add standard LICENSE and AUTHORS files
|
||||
* New focus: embedded systems and small headless servers
|
||||
|
||||
|
||||
[0.6] - 2010-06-14
|
||||
------------------
|
||||
|
||||
* Don't start consolekit manually, dbus starts it (rtp)
|
||||
* Unmount all filesystems before rebooting
|
||||
* Disable `USE_VAR_RUN_RESOLVCONF` for Mandriva
|
||||
* Unset terminal type in Mandriva before running X
|
||||
* Remove extra sleep in finit-alt before calling services.sh (caio)
|
||||
|
||||
|
||||
[0.5] - 2008-08-21
|
||||
------------------
|
||||
|
||||
* Add option to start dbus and consolekit before the X server
|
||||
* finit-alt listens to `/dev/initctl` to work with `reboot(8)` (smurfy)
|
||||
* Write runlevel to utmp, needed by Printerdrake (Pascal Terjan)
|
||||
* Fix ownership of `/var/run/utmp` (reported by Pascal Terjan)
|
||||
* Remove obsolete code to load AGP drivers
|
||||
* Conditional build of `/etc/resolveconf/run` support
|
||||
* Add support to `/var/run/resolvconf` in Mandriva (blino)
|
||||
|
||||
|
||||
[0.4] - 2008-05-16
|
||||
------------------
|
||||
|
||||
* Default username for finit-alt configurable in Makefile
|
||||
* Create loopback device node in finit-alt (for squashfs)
|
||||
* Add option to use built-in run-parts instead of `/bin/run-parts`
|
||||
* Ignore signal instead of setting to an empty handler (Metalshark)
|
||||
* Handle pam_console permissions in finit-alt for Mandriva
|
||||
* Add services.sh example and nash-hotplug patch for Mandriva
|
||||
* Mount `/proc/bus/usb` in Mandriva
|
||||
* Add runtime debug to finit-alt if finit_debug parameter is specified
|
||||
* Read configuration from `/etc/finit.conf`
|
||||
* Run getty with openvt on the virtual terminal
|
||||
|
||||
|
||||
[0.3] - 2008-02-23
|
||||
------------------
|
||||
|
||||
* Change poweroff method to `reboot(RB_POWER_OFF)` (Metalshark)
|
||||
* Remove duplicate `unionctl()` reimplementation error
|
||||
* Fix string termination in path creation
|
||||
* Mount `/var/lock` and `/var/run` as tmpfs
|
||||
|
||||
|
||||
[0.2] - 2008-02-19
|
||||
------------------
|
||||
|
||||
* Replace `system("touch")` with `touch()` in finit-mod (Metalshark)
|
||||
* Disable `NO_HCTOSYS` by default to match stock Eeepc kernel
|
||||
* Drop `system("rm -f")` to clean `/tmp`, its a fresh mounted tmpfs
|
||||
* Write ACPI sleep state to `/sys/power/state` instead of
|
||||
`/proc/acpi/sleep` (Metalshark)
|
||||
* Use direct calls to set loopback instead of `system("ifconfig")`
|
||||
* Replace `system("cat")` and `system("dd")` with C implementation
|
||||
* Moved finit-mod and finit-alt helpers to `helpers.c`
|
||||
* Replace `system("echo;cat")` to draw shutdown splash with C calls
|
||||
|
||||
|
||||
0.1 - 2008-02-14
|
||||
----------------
|
||||
|
||||
* Initial release
|
||||
|
||||
[libuEv]: https://github.com/troglobit/libuev
|
||||
[dea3ae8]: https://github.com/troglobit/finit/commit/dea3ae8
|
||||
[1.11]: https://github.com/troglobit/finit/compare/1.10...HEAD
|
||||
[1.10]: https://github.com/troglobit/finit/compare/1.9...1.10
|
||||
[1.9]: https://github.com/troglobit/finit/compare/1.8...1.9
|
||||
[1.8]: https://github.com/troglobit/finit/compare/1.7...1.8
|
||||
[1.7]: https://github.com/troglobit/finit/compare/1.6...1.7
|
||||
[1.6]: https://github.com/troglobit/finit/compare/1.5...1.6
|
||||
[1.5]: https://github.com/troglobit/finit/compare/1.4...1.5
|
||||
[1.4]: https://github.com/troglobit/finit/compare/1.3...1.4
|
||||
[1.3]: https://github.com/troglobit/finit/compare/1.2...1.3
|
||||
[1.2]: https://github.com/troglobit/finit/compare/1.1...1.2
|
||||
[1.1]: https://github.com/troglobit/finit/compare/1.0...1.1
|
||||
[1.0]: https://github.com/troglobit/finit/compare/0.9...1.0
|
||||
[0.9]: https://github.com/troglobit/finit/compare/0.8...0.9
|
||||
[0.8]: https://github.com/troglobit/finit/compare/0.7...0.8
|
||||
[0.7]: https://github.com/troglobit/finit/compare/0.6...0.7
|
||||
[0.6]: https://github.com/troglobit/finit/compare/0.5...0.6
|
||||
[0.5]: https://github.com/troglobit/finit/compare/0.4...0.5
|
||||
[0.4]: https://github.com/troglobit/finit/compare/0.3...0.4
|
||||
[0.3]: https://github.com/troglobit/finit/compare/0.2...0.3
|
||||
[0.2]: https://github.com/troglobit/finit/compare/0.1...0.2
|
||||
|
||||
@@ -26,14 +26,16 @@
|
||||
uninstall-exec uninstall-data uninstall-dev
|
||||
|
||||
#VERSION ?= $(shell git tag -l | tail -1)
|
||||
VERSION ?= 1.10
|
||||
VERSION ?= 1.11
|
||||
NAME = finit
|
||||
PKG = $(NAME)-$(VERSION)
|
||||
DEV = $(NAME)-dev
|
||||
ARCHIVE = $(PKG).tar.xz
|
||||
ARCHTOOL = `which git-archive-all`
|
||||
ARCHIVE = $(PKG).tar
|
||||
ARCHIVEZ = ../$(ARCHIVE).xz
|
||||
EXEC = finit reboot
|
||||
HEADERS = plugin.h svc.h helpers.h queue.h
|
||||
DISTFILES = LICENSE README NEWS finit.conf services
|
||||
DISTFILES = LICENSE README CHANGELOG finit.conf services
|
||||
OBJS = finit.o conf.o helpers.o sig.o svc.o plugin.o tty.o
|
||||
SRCS = $(OBJS:.o=.c)
|
||||
DEPS = $(addprefix .,$(SRCS:.c=.d))
|
||||
@@ -57,22 +59,24 @@ FINIT_RCSD ?= $(sysconfdir)/finit.d
|
||||
CFLAGS += -W -Wall -Werror -Os
|
||||
# Disable annoying gcc warning for "warn_unused_result", see GIT 37af997
|
||||
CPPFLAGS += -U_FORTIFY_SOURCE
|
||||
CPPFLAGS += -Ilibite -D_XOPEN_SOURCE=600 -D_BSD_SOURCE -D_GNU_SOURCE
|
||||
CPPFLAGS += -Ilibite -Ilibuev
|
||||
CPPFLAGS += -D_XOPEN_SOURCE=600 -D_BSD_SOURCE -D_GNU_SOURCE
|
||||
CPPFLAGS += -DVERSION=\"$(VERSION)\" -DWHOAMI=\"`whoami`@`hostname`\"
|
||||
CPPFLAGS += -DFINIT_FIFO=\"$(FINIT_FIFO)\" -DFINIT_CONF=\"$(FINIT_CONF)\"
|
||||
CPPFLAGS += -DFINIT_RCSD=\"$(FINIT_RCSD)\" -DPLUGIN_PATH=\"$(plugindir)\"
|
||||
LDFLAGS += -rdynamic -L$(TOPDIR)/libite
|
||||
DEPLIBS = libite/libite.so
|
||||
DEPLIBS = libite/libite.so libuev/libuev.a
|
||||
LDLIBS += -ldl -lite
|
||||
|
||||
include common.mk
|
||||
export libdir plugindir incdir ROOTDIR CPPFLAGS LDFLAGS LDLIBS
|
||||
|
||||
all: $(DEPLIBS) $(EXEC)
|
||||
$(MAKE) -C plugins $@
|
||||
+$(MAKE) -C plugins $@
|
||||
|
||||
$(DEPLIBS): Makefile
|
||||
$(MAKE) -C libite all
|
||||
+$(MAKE) -C libite all
|
||||
+$(MAKE) -C libuev all
|
||||
|
||||
$(OBJS): Makefile
|
||||
|
||||
@@ -133,21 +137,32 @@ uninstall: uninstall-exec uninstall-data uninstall-dev
|
||||
|
||||
clean:
|
||||
-@$(RM) $(OBJS) $(DEPS) $(EXEC)
|
||||
$(MAKE) -C libite $@
|
||||
$(MAKE) -C plugins $@
|
||||
+$(MAKE) -C plugins $@
|
||||
+$(MAKE) -C libite $@
|
||||
+$(MAKE) -C libuev $@
|
||||
|
||||
distclean: clean
|
||||
-@$(RM) $(JUNK) unittest *.o .*.d
|
||||
$(MAKE) -C libite $@
|
||||
$(MAKE) -C plugins $@
|
||||
+$(MAKE) -C plugins $@
|
||||
+$(MAKE) -C libite $@
|
||||
+$(MAKE) -C libuev $@
|
||||
|
||||
check:
|
||||
$(CHECK) *.c plugins/*.c libite/*.c
|
||||
|
||||
dist:
|
||||
@if [ x"$(ARCHTOOL)" = x"" ]; then \
|
||||
echo "Missing git-archive-all from https://github.com/Kentzo/git-archive-all"; \
|
||||
exit 1; \
|
||||
fi
|
||||
@if [ -e $(ARCHIVEZ) ]; then \
|
||||
echo "Distribution already exists."; \
|
||||
exit 1; \
|
||||
fi
|
||||
@echo "Building xz tarball of $(PKG) in parent dir..."
|
||||
git archive --format=tar --prefix=$(PKG)/ $(VERSION) | xz >../$(ARCHIVE)
|
||||
@(cd ..; md5sum $(ARCHIVE) | tee $(ARCHIVE).md5)
|
||||
@$(ARCHTOOL) ../$(ARCHIVE)
|
||||
@xz ../$(ARCHIVE)
|
||||
@md5sum $(ARCHIVEZ) | tee $(ARCHIVEZ).md5
|
||||
|
||||
dev: distclean
|
||||
@echo "Building unstable xz $(DEV) in parent dir..."
|
||||
|
||||
@@ -1,206 +0,0 @@
|
||||
NEWS
|
||||
====
|
||||
|
||||
|
||||
1.10 (2014-11-27)
|
||||
-----------------
|
||||
|
||||
Major bug fix release.
|
||||
|
||||
* Project now relies on static code analysis from Coverity, so this
|
||||
release contains many serious bug fixes.
|
||||
* Fix serious file descriptor and memory leaks in the following
|
||||
functions. In particular the leaks in `run_interactive()` are very
|
||||
serious since that function is called every time a service is
|
||||
started and/or restarted! For details, see the GIT log:
|
||||
* `helpers.c:run()`
|
||||
* `helpers.c:run_interactive()`
|
||||
* `helpers.c:set_hostname()`
|
||||
* `helpers.c:procname_kill()`
|
||||
* `svc.c:svc_start()`: Fix swapped arguments to dup2() and add
|
||||
close(fd) to prevent descriptor leak.
|
||||
* `svc.c:svc_start()`: Fix out of bounds write to local stack
|
||||
variable, wrote off-by-one outside array.
|
||||
* Several added checks for return values to `mknod()`, `mkdir()`,
|
||||
`remove()`, etc.
|
||||
* Convert to use Markdown for README, NEWS and TODO.
|
||||
* Serious update to README and slight pruning of finished TODO items.
|
||||
|
||||
|
||||
1.9 (2014-04-21)
|
||||
----------------
|
||||
|
||||
* Bug fixes, code cleanup
|
||||
* Add support for an include directive to `.conf` files
|
||||
* Fallback to `/bin/sh` if user forgets tty setting
|
||||
* Handle `SIGHUP` from service callback properly when switching runlevel
|
||||
* Initial support for restarting lost services during `norespwan`
|
||||
* Misc. major (memleak) and minor fixes and additions to `libite/lite.h`
|
||||
|
||||
|
||||
1.8 (2013-06-07)
|
||||
----------------
|
||||
|
||||
* Support for runlevels, with a bootstrap runlevel 'S'
|
||||
* Support for saving previous and current runlevel to UTMP
|
||||
* Support for new `finit.conf` commands: run, task, and runlevel
|
||||
* Support for tty and console commands in `finit.conf`, like services
|
||||
but for launching multiple getty logins
|
||||
* New tty plugin to monitor TTYs coming and going, like USB TTYs
|
||||
* Bugfixes to libite
|
||||
|
||||
|
||||
1.7 (2012-10-08)
|
||||
----------------
|
||||
|
||||
* Show `__FILE__` in `_d()` debug messages, useful for plugins with
|
||||
similarily named callbacks. Also, only in debug mode anyway
|
||||
* Make sure to cleanup recorded PID when a service is lost. Required
|
||||
by service plugins for their callbacks to work.
|
||||
* Bugfix: Do not `free()` static string in `finit.conf` parser
|
||||
* Only clear screen when in verbose mode. Maybe this should be removed
|
||||
altogether?
|
||||
|
||||
|
||||
1.6 (2012-10-06)
|
||||
----------------
|
||||
|
||||
* Skip . and .. in plugin loader and display error on failed plugins
|
||||
* Support for overriding `/etc/finit.d` with `runparts DIR` in
|
||||
`finit.conf`
|
||||
* Revoke support for starting services not starting with a slash.
|
||||
* Prevent endless restart of non-existing services in `finit.conf`
|
||||
* Support for sysvinit style startstop scripts in `/etc/finit.d`
|
||||
* Minor fix to alsa-utils plugin to silence on non-existing cards
|
||||
|
||||
|
||||
1.5 (2012-10-03)
|
||||
----------------
|
||||
|
||||
* Use bootmisc plugin to setup standard FHS 2.3 structure in `/var`
|
||||
* Added `FLOG_WARN()` syslog macro, for plugins
|
||||
* Add plugin dependency resolver. Checks `plugin_t` for `.depends`
|
||||
|
||||
|
||||
1.4 (2012-10-02)
|
||||
----------------
|
||||
|
||||
* Fix I/O plugin watcher and load plugins earlier for a new hook
|
||||
* Start refactoring helpers.c into a libite.so (-lite). This means
|
||||
other user space applications/daemons can make use of the neat toolbox
|
||||
available in finit
|
||||
* Use short-form -s/-w -u to work with BusyBox hwclock as well
|
||||
* Use RTLD_GLOBAL flag to tell dynamic loader to load dependent .so
|
||||
files as well. Lets other plugins use global symbols.
|
||||
* Greatly simplify svc hook for external plugins and cleanup plugin API.
|
||||
* And more ... see the GIT log for more details.
|
||||
|
||||
|
||||
1.3 (2012-09-28)
|
||||
----------------
|
||||
|
||||
* Cleanup public plugin API a bit and add new pid/pidfile funcs
|
||||
* Add plugin hook to end of service startup
|
||||
* Remove finit.h from svc.h, plugins should not need this.
|
||||
* Move utility macros etc. to helpers.h
|
||||
* Make `finit.h` daemon internal, only
|
||||
* Move defines of FIFO, conf and rcS.d to Makefile => correct paths
|
||||
* Add support for installing required headers in system include dir
|
||||
* Better support for distributions and packagers with install-exec,
|
||||
install-data, and install-dev targets in Makefile. Useful if you want
|
||||
to call targets with different `$DESTDIR`!
|
||||
* 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` environemnt variable to `$plugindir`
|
||||
|
||||
|
||||
1.2 (2012-09-27)
|
||||
----------------
|
||||
|
||||
* Fix installation paths encoded in finit binary
|
||||
* Update README with section on building and enviroment variables
|
||||
|
||||
|
||||
1.1 (2012-09-27)
|
||||
----------------
|
||||
|
||||
* Build fixes for ARM eabi/uClibc
|
||||
* Rename signal.[ch]-->sig.[ch] to avoid name clash w/ system headers
|
||||
|
||||
|
||||
1.0 (2012-09-26)
|
||||
----------------
|
||||
|
||||
* New plugin based system for all odd extensions
|
||||
* New service monitor that restarts services if they die
|
||||
* New maintainer at GitHub http://github.com/troglobit/finit
|
||||
* Add standard LICENSE and AUTHORS files
|
||||
* New focus: embedded systems and small headless servers
|
||||
|
||||
|
||||
0.6 (2010-06-14)
|
||||
----------------
|
||||
|
||||
* don't start consolekit manually, dbus starts it (rtp)
|
||||
* unmount all filesystems before rebooting
|
||||
* disable `USE_VAR_RUN_RESOLVCONF` for Mandriva
|
||||
* unset terminal type in Mandriva before running X
|
||||
* remove extra sleep in finit-alt before calling services.sh (caio)
|
||||
|
||||
|
||||
0.5 (2008-08-21)
|
||||
----------------
|
||||
|
||||
* add option to start dbus and consolekit before the X server
|
||||
* finit-alt listens to `/dev/initctl` to work with `reboot(8)` (smurfy)
|
||||
* write runlevel to utmp, needed by Printerdrake (Pascal Terjan)
|
||||
* fix ownership of `/var/run/utmp` (reported by Pascal Terjan)
|
||||
* remove obsolete code to load AGP drivers
|
||||
* conditional build of `/etc/resolveconf/run` support
|
||||
* add support to `/var/run/resolvconf` in Mandriva (blino)
|
||||
|
||||
|
||||
O.4 (2008-05-16)
|
||||
----------------
|
||||
|
||||
* default username for finit-alt configurable in Makefile
|
||||
* create loopback device node in finit-alt (for squashfs)
|
||||
* add option to use built-in run-parts instead of `/bin/run-parts`
|
||||
* ignore signal instead of setting to an empty handler (Metalshark)
|
||||
* handle pam_console permissions in finit-alt for Mandriva
|
||||
* add services.sh example and nash-hotplug patch for Mandriva
|
||||
* mount `/proc/bus/usb` in Mandriva
|
||||
* add runtime debug to finit-alt if finit_debug parameter is specified
|
||||
* read configuration from `/etc/finit.conf`
|
||||
* run getty with openvt on the virtual terminal
|
||||
|
||||
|
||||
0.3 (2008-02-23)
|
||||
----------------
|
||||
|
||||
* Change poweroff method to `reboot(RB_POWER_OFF)` (Metalshark)
|
||||
* Remove duplicate `unionctl()` reimplementation error
|
||||
* Fix string termination in path creation
|
||||
* Mount `/var/lock` and `/var/run` as tmpfs
|
||||
|
||||
|
||||
0.2 (2008-02-19)
|
||||
----------------
|
||||
|
||||
* replace` system("touch")` with `touch()` in finit-mod (Metalshark)
|
||||
* disable `NO_HCTOSYS` by default to match stock Eeepc kernel
|
||||
* drop `system("rm -f")` to clean `/tmp`, its a fresh mounted tmpfs
|
||||
* write ACPI sleep state to `/sys/power/state` instead of
|
||||
`/proc/acpi/sleep` (Metalshark)
|
||||
* use direct calls to set loopback instead of `system("ifconfig")`
|
||||
* replace `system("cat")` and `system("dd")` with C implementation
|
||||
* moved finit-mod and finit-alt helpers to `helpers.c`
|
||||
* replace `system("echo;cat")` to draw shutdown splash with C calls
|
||||
|
||||
|
||||
0.1 (2008-02-14)
|
||||
----------------
|
||||
|
||||
* initial release
|
||||
|
||||
@@ -1,36 +1,57 @@
|
||||
README
|
||||
======
|
||||
Finit | Fast & Extensible init for Linux
|
||||
========================================
|
||||
[](https://travis-ci.org/troglobit/finit)
|
||||
[](https://scan.coverity.com/projects/3545)
|
||||
|
||||

|
||||
|
||||
Table of Contents
|
||||
-----------------
|
||||
|
||||
* [Introduction](#introduction)
|
||||
* [Features](#features)
|
||||
* [/etc/finit.conf](#etcfinitconf)
|
||||
* [/etc/finit.d](#etcfinitd)
|
||||
* [Bootstrap](#bootstrap)
|
||||
* [Runlevels](#runlevels)
|
||||
* [Hooks, Callbacks & Plugins](#hooks-callbacks--plugins)
|
||||
* [Rebooting and Halting](#rebooting-and-halting)
|
||||
* [Building](#building)
|
||||
* [Running](#running)
|
||||
* [Debugging](#debugging)
|
||||
* [Origin & References](#origin--references)
|
||||
|
||||
|
||||
Introduction
|
||||
------------
|
||||
|
||||
Init is the first process to run once a UNIX kernel has booted, it
|
||||
always has PID 1 and is responsible for starting up the rest of the
|
||||
system. Finit is a very small plugin based init with built in
|
||||
[process supervision](https://en.wikipedia.org/wiki/Process_supervision)
|
||||
similar to that of D.J. Bernstein's
|
||||
[daemontools](http://cr.yp.to/daemontools.html) and Gerrit Pape's
|
||||
[runit](http://smarden.org/runit/). Its focus is on small and embedded
|
||||
GNU/Linux systems, although fully functional on standard server and
|
||||
desktop installations.
|
||||
system. Finit is plugin-based with built in [process supervision][1]
|
||||
similar to that of D.J. Bernstein's [daemontools][2] and Gerrit Pape's
|
||||
[runit][3]. The main focus of Finit is on small and embedded GNU/Linux
|
||||
systems, yet fully functional on standard server and desktop
|
||||
installations as well.
|
||||
|
||||
Finit is fast because it is "scripted" with C and starts services in
|
||||
parallel. Services are supervised and automatically restarted if they
|
||||
fail. Services can have callbacks that are called before a service is
|
||||
(re)started. For instance, before attempting to start a heavily
|
||||
resource intensive service like IPsec or OpenVPN, a callback can check
|
||||
if the outbound interface is up and has an IP address, or just check if
|
||||
the service is disabled -- much like what a SysV init start script
|
||||
usually does.
|
||||
Traditional [SysV init][4] style systems are scripted. For low-resource
|
||||
embedded systems this can be quite resource intensive and cause longer
|
||||
boot times. Finit is optimized to reduce context switches and forking
|
||||
of processes to provide a very basic bootstrap written entirely in C.
|
||||
Hence, there is no `/etc/init.d/rcS` script, or similar, but instead a
|
||||
human-readable `/etc/finit.conf`. This file details what kernel modules
|
||||
to load, programs to run and daemons to supervise.
|
||||
|
||||
To extend finit with new functionality, hooks can be added at certain
|
||||
points in the boot process that execute in sequence, which is useful for
|
||||
certain satisfying preconditions or for synchronization purposes. One
|
||||
can also create plugins to functionality to suit your own needs, the
|
||||
initctl compatibility plugin that comes with finit is one such plugin.
|
||||
The command line arguments given in `/etc/finit.conf` to each service
|
||||
provide a default. Each service can register callbacks, using plugins,
|
||||
to override and modify the behavior to suit the current runlevel and
|
||||
system configuration. For instance, before starting a heavily resource
|
||||
intensive service like IPsec or OpenVPN, a callback can check if the
|
||||
outbound interface is up and has an IP address, or just check if the
|
||||
service is disabled -- much like what a SysV init start script usually
|
||||
does.
|
||||
|
||||
Finit is not only fast, it's arguably one of the easiest to get started
|
||||
with. A complete system can be booted with one simple configuration
|
||||
file, `/etc/finit.conf`, see below for syntax.
|
||||
See [TroglOS][9] for an example of how to boot a small embedded system
|
||||
with Finit.
|
||||
|
||||
|
||||
Features
|
||||
@@ -42,20 +63,27 @@ Start, monitor and restart services if they fail.
|
||||
|
||||
**Runlevels**
|
||||
|
||||
Finit supports standard runlevels if you want, but you don't need them
|
||||
for simple installations.
|
||||
Runlevels is optional in Finit, but support for [SysV runlevels][5] is
|
||||
available if needed. All services in runlevel S(1) are started first,
|
||||
followed by the desired run-time runlevel. Runlevel S can be started in
|
||||
sequence by using `run [S] cmd`. Changing runlevels at runtime is done
|
||||
like any other init, e.g. <kbd>init 4</kbd>.
|
||||
|
||||
**Plugins**
|
||||
|
||||
Extend and modify finit behavior. See examples in plugins/ directory.
|
||||
Finit plugins can be either *boot hooks* into different stages of the
|
||||
boot process or *service callbacks*, or both. A basic set of plugins
|
||||
that extend and modify the basic behavior are bundled. See examples in
|
||||
the `plugins/` directory.
|
||||
|
||||
Plugin capabilities:
|
||||
|
||||
* Service callbacks — modify service arguments, run/restart/stop
|
||||
* Task/Run callbacks — a one-shot commands, executed in sequence
|
||||
* Hooks — hook into the boot at predefined points to extend finit
|
||||
* I/O — listen to external events and control finit behavior/services
|
||||
* Service callbacks -- modify service arguments, run/restart/stop
|
||||
* Task/Run callbacks -- a one-shot commands, executed in sequence
|
||||
* Hooks -- hook into the boot at predefined points to extend finit
|
||||
* I/O -- listen to external events and control finit behavior/services
|
||||
|
||||
Extensions and functionality not purely related to what an /sbin/init
|
||||
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.
|
||||
|
||||
@@ -63,77 +91,76 @@ hook into the boot process or respond to various I/O.
|
||||
/etc/finit.conf
|
||||
---------------
|
||||
|
||||
Contrary to most other script based init alternatives
|
||||
([SysV init](https://en.wikipedia.org/wiki/Init),
|
||||
[upstart](http://upstart.ubuntu.com/),
|
||||
[systemd](http://www.freedesktop.org/wiki/Software/systemd/),
|
||||
[OpenRC](http://www.gentoo.org/proj/en/base/openrc/) and the likes)
|
||||
finit reads its configuration from `/etc/finit.conf`. Syntax:
|
||||
Contrary to most other script based init alternatives ([SysV init][4],
|
||||
[upstart][6], [systemd][7], [OpenRC][8], etc.) Finit reads its entire
|
||||
configuration from `/etc/finit.conf`.
|
||||
|
||||
* `check <DEV>`
|
||||
Syntax:
|
||||
|
||||
Run fsck on a file system before mounting it
|
||||
* `check <DEV>`
|
||||
|
||||
* `module <MODULE>`
|
||||
Run fsck on a file system before mounting it
|
||||
|
||||
Load a kernel module, with optional arguments
|
||||
* `module <MODULE>`
|
||||
|
||||
* `network <PATH>`
|
||||
Load a kernel module, with optional arguments
|
||||
|
||||
Script or program to bring up networking, with optional arguments
|
||||
* `network <PATH>`
|
||||
|
||||
* `runlevel <N>`
|
||||
Script or program to bring up networking, with optional arguments
|
||||
|
||||
N is the runlevel number 1-9, where 6 is reserved for reboot.
|
||||
* `runlevel <N>`
|
||||
|
||||
Default is 2.
|
||||
N is the runlevel number 1-9, where 6 is reserved for reboot.
|
||||
|
||||
* `run [LVLS] /path/to/cmd ARGS -- Optional description`
|
||||
Default is 2.
|
||||
|
||||
One-shot command to run in sequence when entering a runlevel, with
|
||||
optional arguments and description. This command is guaranteed to
|
||||
be completed before running the next command.
|
||||
* `run [LVLS] /path/to/cmd ARGS -- Optional description`
|
||||
|
||||
* `task LVLS] /path/to/cmd ARGS -- Optional description`
|
||||
One-shot command to run in sequence when entering a runlevel, with
|
||||
optional arguments and description. This command is guaranteed to be
|
||||
completed before running the next command.
|
||||
|
||||
One-shot like 'run', but starts in parallel with the next command
|
||||
* `task [LVLS] /path/to/cmd ARGS -- Optional description`
|
||||
|
||||
* `service [LVLS] /path/to/daemon ARGS -- Optional description`
|
||||
One-shot like 'run', but starts in parallel with the next command
|
||||
|
||||
Service, or daemon, to be monitored and automatically restarted if
|
||||
it exits prematurely. Please note that you often need to provide
|
||||
a --foreground or --no-background argument to most daemons to
|
||||
prevent them from forking off to the background.
|
||||
* `service [LVLS] /path/to/daemon ARGS -- Optional description`
|
||||
|
||||
* `runparts <PATH>`
|
||||
Service, or daemon, to be monitored and automatically restarted if it
|
||||
exits prematurely. Please note that you often need to provide a
|
||||
--foreground or --no-background argument to most daemons to prevent
|
||||
them from forking off to the background.
|
||||
|
||||
Call run-parts(8) on a directory other than default ``/etc/finit.d``
|
||||
* `runparts <PATH>`
|
||||
|
||||
* `include <CONF>`
|
||||
Call run-parts(8) on a directory other than default ``/etc/finit.d``
|
||||
|
||||
Include another configuration file, ``/etc/finit.d``, or runparts
|
||||
path is prepended to file if the file is not found or an absolute
|
||||
path is not given
|
||||
* `include <CONF>`
|
||||
|
||||
* `tty [LVLS] <DEV | /bin/sh>`
|
||||
Include another configuration file, ``/etc/finit.d``, or runparts path
|
||||
is prepended to file if the file is not found or an absolute path is
|
||||
not given
|
||||
|
||||
Start a getty on the given TTY device, in the given runlevels. When
|
||||
no tty setting is given in `finit.conf`, or if `/bin/sh` is given as
|
||||
argument instead of a device path, a single shell is started on the
|
||||
default console. Useful for really bare-bones systems
|
||||
* `tty [LVLS] <DEV | /bin/sh>`
|
||||
|
||||
See `finit.h` for the `#define GETTY` that is called, along with the
|
||||
default baud rate.
|
||||
Start a getty on the given TTY device, in the given runlevels. When
|
||||
no tty setting is given in `finit.conf`, or if `/bin/sh` is given as
|
||||
argument instead of a device path, a single shell is started on the
|
||||
default console. Useful for really bare-bones systems
|
||||
|
||||
* `console <DEV>`
|
||||
See `finit.h` for the `#define GETTY` that is called, along with the
|
||||
default baud rate.
|
||||
|
||||
Some embedded systems have a dedicated console port. This command
|
||||
tells finit to not start getty, but instead print a friendly message
|
||||
and wait for the user to activate the console with a key press before
|
||||
starting getty.
|
||||
* `console <DEV>`
|
||||
|
||||
When running `make install` no default `/etc/finit.conf` will be
|
||||
provided since the system requirements differ too much. Try out the
|
||||
Some embedded systems have a dedicated console port. This command
|
||||
tells finit to not start getty, but instead print a friendly message
|
||||
and wait for the user to activate the console with a key press before
|
||||
starting getty.
|
||||
|
||||
When running <kbd>make install</kbd> no default `/etc/finit.conf` will
|
||||
be installed since system requirements differ too much. Try out the
|
||||
Debian 6.0 example `/usr/share/doc/finit/finit.conf` configuration that
|
||||
is capable of service monitoring SSH, sysklogd, gdm and a console getty!
|
||||
|
||||
@@ -142,13 +169,55 @@ is capable of service monitoring SSH, sysklogd, gdm and a console getty!
|
||||
------------
|
||||
|
||||
At the end of the boot, when networking and all services are up, finit
|
||||
calls its built-in run-parts(8) on the `/etc/finit.d/` directory, if
|
||||
it exists. Similar to how the `/ec/rc.local` file works in most other
|
||||
init daemons, only finit runs a directory of scripts. This replaces the
|
||||
calls its built-in run-parts(8) on the `/etc/finit.d/` directory, if it
|
||||
exists. Similar to how the `/ec/rc.local` file works in most other init
|
||||
daemons, only finit runs a directory of scripts. This replaces the
|
||||
earlier support for a `/usr/sbin/services.sh` script in the original
|
||||
finit.
|
||||
|
||||
|
||||
Bootstrap
|
||||
---------
|
||||
|
||||
1. Setup `/dev`
|
||||
2. Parse `/etc/finit.conf`
|
||||
3. Load all `.so` plugins
|
||||
4. Remount/Pivot `/` to get R+W
|
||||
5. Call 1st level hooks, `HOOK_ROOTFS_UP`
|
||||
6. Mount `/etc/fstab` and swap, if available
|
||||
7. Cleanup stale files from `/tmp/*` et al
|
||||
8. Enable SysV init signals
|
||||
9. Call 2nd level hooks, `HOOK_BASEFS_UP`
|
||||
10. Start all 'S' runlevel tasks and services
|
||||
11. Setup `/etc/sysctl.conf`
|
||||
12. Setup hostname and loopback
|
||||
13. Call `network` script, if set in `/etc/finit.conf`
|
||||
14. Call 3rd level hooks, `HOOK_NETWORK_UP`
|
||||
15. Switch to active runlevel, as set in `/etc/finit.conf`, default 2.
|
||||
Here is where the rest of all tasks and services are started.
|
||||
16. Call 4th level hooks, `HOOK_SVC_UP`
|
||||
17. Run-parts in `/etc/finit.d`, if any
|
||||
18. Call 5th level (last) hooks, `HOOK_SYSTEM_UP`
|
||||
19. Start TTYs defined in `/etc/finit.conf`, or rescue on `/dev/console`
|
||||
20. Enter main monitor loop
|
||||
|
||||
In (10) and (15) tasks and services defined in `/etc/finit.conf` are
|
||||
started. Remember, all `service` and `task` stanzas are started in
|
||||
parallel and `run` in sequence, and in the order listed. Hence, to
|
||||
emulate a SysV `/etc/init.d/rcS` one could write a long file with only
|
||||
`run` statments.
|
||||
|
||||
Notice the five hook points that are called at various point in the
|
||||
bootstrap process. This is where plugins can extend the boot in any way
|
||||
they please.
|
||||
|
||||
For instance, at `HOOK_BASEFS_UP` a plugin could read an XML file from a
|
||||
USB stick, convert/copy its contents to the system's `/etc/` directory,
|
||||
well before all 'S' runlevel tasks are started. This could be used with
|
||||
system images that are created read-only and all configuration is stored
|
||||
on external media.
|
||||
|
||||
|
||||
Runlevels
|
||||
---------
|
||||
|
||||
@@ -158,8 +227,9 @@ commands and TTYs listed without a set of runlevels get a default set
|
||||
`[234]` assigned. The default runlevel after boot is 2.
|
||||
|
||||
To specify an allowed set of runlevels for a `service`, `run` command, `task`,
|
||||
or `tty`, add `[NNN]` to it in your `finit.conf`, like this:
|
||||
or `tty`, add `[NNN]` to it in your `/etc/finit.conf`, like this:
|
||||
|
||||
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
|
||||
@@ -170,21 +240,19 @@ or `tty`, add `[NNN]` to it in your `finit.conf`, like this:
|
||||
tty [2] /dev/tty5
|
||||
tty [2] /dev/tty6
|
||||
|
||||
In this example acpid is started once at bootstrap using a conventional
|
||||
SysV init script. Here the run command was used, meaning the following
|
||||
task command is not run until the init script has fully completed. Then
|
||||
the keyboard setup script is called in parallel with spawning klogd as
|
||||
a monitored service.
|
||||
In this example syslogd is first started, in parallel, and then acpid is
|
||||
called using a conventional SysV init script. It is called with the run
|
||||
command, meaning the following task command to start the kbd script is
|
||||
not called until the acpid init script has fully completed. Then the
|
||||
keyboard setup script is called in parallel with klogd as a monitored
|
||||
service.
|
||||
|
||||
Tasks and services are started in parallel, while run commands are run
|
||||
in the order listed and subsequent commands are not started until a run
|
||||
command has completed.
|
||||
|
||||
Existing finit.conf files that lack runlevel setting will get a default
|
||||
runlevel assigned, `[234]`.
|
||||
Again, tasks and services are started in parallel, while run commands
|
||||
are called in the order listed and subsequent commands are not started
|
||||
until a run command has completed.
|
||||
|
||||
Switching between runlevels can be done by calling init with a single
|
||||
argument, e.g., `init 5` switches to runlevel 5.
|
||||
argument, e.g. <kbd>init 5</kbd> switches to runlevel 5.
|
||||
|
||||
|
||||
Hooks, Callbacks & Plugins
|
||||
@@ -196,27 +264,26 @@ however come with support for hooks, service callbacks and plugins that
|
||||
can used to extend finit with. For your convenience a set of *optional*
|
||||
plugins are available:
|
||||
|
||||
* *alsa-utils.so*: Restore and save ALSA sound settings on
|
||||
startup/shutdown.
|
||||
* *alsa-utils.so*: Restore and save ALSA sound settings on
|
||||
startup/shutdown.
|
||||
|
||||
* *bootmisc.so*: Setup necessary files for UTMP, tracking logins
|
||||
at boot.
|
||||
* *bootmisc.so*: Setup necessary files for UTMP, tracks logins at boot.
|
||||
|
||||
* *dbus.so*: Setup and start system message bus, D-Bus, at boot.
|
||||
* *dbus.so*: Setup and start system message bus, D-Bus, at boot.
|
||||
|
||||
* *hwclock.so*: Restore and save system clock from/to RTC on
|
||||
startup/shutdown.
|
||||
* *hwclock.so*: Restore and save system clock from/to RTC on
|
||||
startup/shutdown.
|
||||
|
||||
* *initctl.so*: Extends finit with a traditional initctl functionality.
|
||||
* *initctl.so*: Extends finit with a traditional initctl functionality.
|
||||
|
||||
* *resolvconf.so*: Setup necessary files for resolvconf at startup.
|
||||
* *resolvconf.so*: Setup necessary files for resolvconf at startup.
|
||||
|
||||
* *tty.so*: Watches /dev, using inotify, for new device nodes (TTY's) to
|
||||
start/stop getty consoles on them on demand.
|
||||
* *tty.so*: Watches /dev, using inotify, for new device nodes (TTY's) to
|
||||
start/stop getty consoles on them on demand.
|
||||
|
||||
* *urandom.so*: Setup random seed at startup.
|
||||
* *urandom.so*: Setup random seed at startup.
|
||||
|
||||
* *x11-common.so*: Setup necessary files for X-Window.
|
||||
* *x11-common.so*: Setup necessary files for X-Window.
|
||||
|
||||
Usually you want to hook into the boot process once, simple hook plugins
|
||||
like `bootmisc.so` are great for that purpose. They are called at each
|
||||
@@ -224,22 +291,22 @@ hook point in the boot process, useful to insert some pre-bootstrap
|
||||
mechanisms, like generating configuration files, restoring HW device
|
||||
state, etc. Available hook points are:
|
||||
|
||||
* `HOOK_ROOTFS_UP`: When `finit.conf` has been read and `/` has is
|
||||
mounted -- very early
|
||||
* `HOOK_ROOTFS_UP`: When `finit.conf` has been read and `/` has is
|
||||
mounted -- very early
|
||||
|
||||
* `HOOK_BASEFS_UP`: All of `/etc/fstab` is mounted, swap is available
|
||||
and default init signals are setup
|
||||
* `HOOK_BASEFS_UP`: All of `/etc/fstab` is mounted, swap is available
|
||||
and default init signals are setup
|
||||
|
||||
* `HOOK_NETWORK_UP`: System bootstrap, runlevel S, has completed and
|
||||
networking is up (`lo` is up and the `network` script has run)
|
||||
* `HOOK_NETWORK_UP`: System bootstrap, runlevel S, has completed and
|
||||
networking is up (`lo` is up and the `network` script has run)
|
||||
|
||||
* `HOOK_SVC_UP`: All services in the active runlevel has been launched
|
||||
* `HOOK_SVC_UP`: All services in the active runlevel has been launched
|
||||
|
||||
* `HOOK_SYSTEM_UP`: All services *and* everything in `/etc/finit.d`
|
||||
has been launched
|
||||
* `HOOK_SYSTEM_UP`: All services *and* everything in `/etc/finit.d`
|
||||
has been launched
|
||||
|
||||
* `HOOK_SHUTDOWN`: Called at shutdown/reboot, right before all
|
||||
services are sent `SIGTERM`
|
||||
* `HOOK_SHUTDOWN`: Called at shutdown/reboot, right before all
|
||||
services are sent `SIGTERM`
|
||||
|
||||
Plugins like `initctl.so` and `tty.so` extend finit by acting on events,
|
||||
they are called I/O plugins and are called from the finit main loop when
|
||||
@@ -275,56 +342,58 @@ alter the behavior of finit.
|
||||
The following environment variables are checked by the makefiles and control
|
||||
what is built and where resulting binaries are installed.
|
||||
|
||||
* `ROOTDIR=`: Top directory for building complete system, used in pretty
|
||||
printing.
|
||||
* `ROOTDIR=`: Top directory for building complete system, used in pretty
|
||||
printing.
|
||||
|
||||
* `VERSION=`: Defaults to the currently released version of finit,
|
||||
e.g., 1.3 but can be overridden by packagers using this variable to
|
||||
add a suffix or completely alter the version.
|
||||
* `VERSION=`: Defaults to the currently released version of finit,
|
||||
e.g., 1.3 but can be overridden by packagers using this variable to
|
||||
add a suffix or completely alter the version.
|
||||
|
||||
* `CFLAGS=`: Default `CFLAGS` are inherited from the build environment.
|
||||
* `CFLAGS=`: Default `CFLAGS` are inherited from the environment.
|
||||
|
||||
* `CPPFLAGS=`: Default `CPPFLAGS` are inherited from the build
|
||||
environment.
|
||||
* `CPPFLAGS=`: Default `CPPFLAGS` are inherited from the environment.
|
||||
|
||||
* `LDFLAGS=`: Default `LDFLAGS` are inherited from the build
|
||||
environment.
|
||||
* `LDFLAGS=`: Default `LDFLAGS` are inherited from the environment.
|
||||
|
||||
* `LDLIBS=`: Default `LIBLIBS` are inherited from the build environment.
|
||||
* `LDLIBS=`: Default `LIBLIBS` are inherited from the environment.
|
||||
|
||||
* `prefix=`: Base prefix path for all files, except `sbinbdir` and
|
||||
`sysconfdir`. Used in concert with the `DESTDIR` variable.
|
||||
* `prefix=`: Base prefix path for all files, except `sbinbdir` and
|
||||
`sysconfdir`. Used in concert with the `DESTDIR` variable.
|
||||
|
||||
Defaults to `/usr`.
|
||||
Defaults to `/usr`.
|
||||
|
||||
* `sbindir=`: Path to where resulting binaries should install to. Used
|
||||
in concert with the `DESTDIR` variable.
|
||||
* `sbindir=`: Path to where resulting binaries should install to. Used
|
||||
in concert with the `DESTDIR` variable.
|
||||
|
||||
Defaults to `/sbin`.
|
||||
Defaults to `/sbin`.
|
||||
|
||||
* `sysconfdir=`: Path to where finit configuration files should install
|
||||
to. Used in concert with the `DESTDIR` variable.
|
||||
* `sysconfdir=`: Path to where finit configuration files should install
|
||||
to. Used in concert with the `DESTDIR` variable.
|
||||
|
||||
Defaults to `/etc`, but is currently unused.
|
||||
Defaults to `/etc`, but is currently unused.
|
||||
|
||||
* `PLUGINS=`: List of stock finit plugins to build and install.
|
||||
* `PLUGINS=`: List of stock finit plugins to build and install.
|
||||
|
||||
* `plugindir=`: Absolute path to where finit should look for dynamically
|
||||
loadable plugins at runtime. At installation prepended by `DESTDIR`
|
||||
and `prefix`.
|
||||
* `plugindir=`: Absolute path to where finit should look for dynamically
|
||||
loadable plugins at runtime. At installation prepended by `DESTDIR`
|
||||
and `prefix`.
|
||||
|
||||
Defaults to `/lib/finit/plugins`.
|
||||
Defaults to `/lib/finit/plugins`.
|
||||
|
||||
* `DESTDIR=`: Used by packagers and distributions when building a
|
||||
relocatable bundle of files. Always prepended to the `prefix`
|
||||
destination directory.
|
||||
* `DESTDIR=`: Used by packagers and distributions when building a
|
||||
relocatable bundle of files. Always prepended to the `prefix`
|
||||
destination directory.
|
||||
|
||||
**Example**
|
||||
|
||||
$ tar xfJ finit-1.3.tar.xz
|
||||
$ PLUGINS="initctl.so hwclock.so" DESTDIR=/tmp/finit/dst \
|
||||
make -C finit-1.3/ clean install
|
||||
make: Entering directory `/home/troglobit/finit-1.3'
|
||||
First, unpack the archive:
|
||||
|
||||
<kbd>$ tar xfJ finit-1.3.tar.xz; cd finit-1.3/</kbd>
|
||||
|
||||
Then build and install:
|
||||
|
||||
<kbd>$ PLUGINS="initctl.so hwclock.so" DESTDIR=/tmp/finit make install</kbd>
|
||||
|
||||
CC finit.o
|
||||
CC conf.o
|
||||
CC helpers.o
|
||||
@@ -337,17 +406,14 @@ what is built and where resulting binaries are installed.
|
||||
PLUGIN plugins/initctl.so
|
||||
CC plugins/hwclock.o
|
||||
PLUGIN plugins/hwclock.so
|
||||
INSTALL /tmp/finit/dst/sbin/finit
|
||||
INSTALL /tmp/finit/dst/lib/finit/plugins/initctl.so
|
||||
INSTALL /tmp/finit/dst/lib/finit/plugins/hwclock.so
|
||||
make: Leaving directory `/home/troglobit/finit-1.3'
|
||||
INSTALL /tmp/finit/sbin/finit
|
||||
INSTALL /tmp/finit/lib/finit/plugins/initctl.so
|
||||
INSTALL /tmp/finit/lib/finit/plugins/hwclock.so
|
||||
|
||||
In this example the
|
||||
[finit-1.3.tar.xz](ftp://troglobit.com/finit/finit-1.3.tar.xz)
|
||||
archive is unpacked to the user's home directory, built and
|
||||
installed to a temporary staging directory. The environment
|
||||
variables `DESTDIR` and `PLUGINS` are changed to suit this
|
||||
particular build.
|
||||
In this example the [finit-1.3.tar.xz][10] archive is unpacked to the
|
||||
user's home directory, built and installed to a temporary staging
|
||||
directory. The environment variables `DESTDIR` and `PLUGINS` are
|
||||
changed to suit this particular build.
|
||||
|
||||
|
||||
Running
|
||||
@@ -363,6 +429,8 @@ give the kernel the following extra command line:
|
||||
|
||||
init=/sbin/finit
|
||||
|
||||

|
||||
|
||||
|
||||
Debugging
|
||||
---------
|
||||
@@ -374,8 +442,8 @@ enable trace messages. A console getty is always started, see the file
|
||||
init=/sbin/finit --debug
|
||||
|
||||
|
||||
Credits & Contact
|
||||
-----------------
|
||||
Origin & References
|
||||
-------------------
|
||||
|
||||
This is the continuation of the [original finit](http://helllabs.org/finit/)
|
||||
by [Claudio Matsuoka](https://github.com/cmatsuoka), which in turn was
|
||||
@@ -388,3 +456,13 @@ Finit is currently being developed and maintained by
|
||||
[GitHub](http://github.com/troglobit/finit). Please file bug reports, clone it,
|
||||
or send pull requests for bug fixes and proposed extensions.
|
||||
|
||||
[1]: https://en.wikipedia.org/wiki/Process_supervision
|
||||
[2]: http://cr.yp.to/daemontools.html
|
||||
[3]: http://smarden.org/runit/
|
||||
[4]: http://en.wikipedia.org/wiki/Init
|
||||
[5]: http://en.wikipedia.org/wiki/Runlevel
|
||||
[6]: http://upstart.ubuntu.com/
|
||||
[7]: http://www.freedesktop.org/wiki/Software/systemd/
|
||||
[8]: http://www.gentoo.org/proj/en/base/openrc/
|
||||
[9]: https://github.com/troglobit/troglos
|
||||
[10]: ftp://troglobit.com/finit/finit-1.3.tar.xz
|
||||
|
||||
@@ -1,98 +1,165 @@
|
||||
TODO
|
||||
====
|
||||
Goals of Finit
|
||||
==============
|
||||
|
||||
Unsorted TODO list of features and points of investigation that could be
|
||||
useful for improving finit. But what is an improvement to finit? Well,
|
||||
similiar to launchd, the goal of finit is to be a FAST replacement for:
|
||||
The intent of finit is to monitor not just processes, but to supervise
|
||||
an entire system and the behavior of certain processes that declare
|
||||
themselves to be finit compliant. Similar to launchd, the goal of
|
||||
finit is to be a replacement for:
|
||||
|
||||
* init
|
||||
* inetd
|
||||
* crond
|
||||
* watchdogd
|
||||
* init
|
||||
* inetd
|
||||
* crond
|
||||
* watchdogd
|
||||
|
||||
A small and simple replacement, primarily for embedded systems, with a
|
||||
very low dependency on external packages.
|
||||
|
||||
General
|
||||
-------
|
||||
|
||||
* Add support for `init <q | reload-configuration>` and `SIGHUP` to
|
||||
have finit reload its `finit.conf`, but also
|
||||
* Add support for inotify to automatically reload `finit.conf`
|
||||
* Implement `initctl stop|start|restart|reload|status <SVC>` and
|
||||
`service <SVC> stop|start|restart|reload|status` on top
|
||||
* Add PRE and POST hooks for when switching between runlevels
|
||||
* Add support for `init -v,--version | version`
|
||||
* Cleanup move sources from top-level directory to `src/` and `include/`
|
||||
* Make sure to install `queue.h` to `$(PREFIX)/include/finit/queue.h`
|
||||
* Move `finit.conf` "check" command to plugin which checks `/etc/fstab`
|
||||
instead. This is the de-facto practice. But keep the check command
|
||||
for really low-end systems w/o `/etc/fstab`.
|
||||
|
||||
|
||||
Init
|
||||
----
|
||||
|
||||
Finit in itself is not SysV Init compatible, it doesn't use `/etc/rc.d`
|
||||
and `/etc/inet.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.
|
||||
|
||||
The main goal is to be FAST. Secondary goals are to be: small, simple
|
||||
and with a very low dependency on external packages.
|
||||
|
||||
Inetd
|
||||
-----
|
||||
|
||||
Simple way of running Internet services on demand, like the old inetd:
|
||||
|
||||
inetd SVC [RUNLVL] /path/to/daemon args -- description
|
||||
inetd PROTO/SERVICE <wait|nowait> [@USER[:GROUP]] /path/to/daemon args
|
||||
|
||||
Example:
|
||||
Examples:
|
||||
|
||||
# Inetd services, launched on demand
|
||||
inetd ssh [2345] /usr/sbin/sshd -i -- SSH Daemon
|
||||
inetd tcp/ssh nowait [2345] @root:root /usr/sbin/sshd -i
|
||||
|
||||
In keeping with the finit tradition, an optional callback can be setup
|
||||
to each inetd service. When a client connects the finit will call the
|
||||
callback with a `struct in_pktinfo` argument which the callback then can
|
||||
allowed or deny.
|
||||
|
||||
Alternatively, borrowing from TCP wrappers by Wietse Venema, a set of
|
||||
`allow` and `deny` directives can be added to `finit.conf` to control
|
||||
inetd services. It could be what IP addreses, networks or interfaces
|
||||
are allowed to connect to the given inetd services. To start with the
|
||||
easiest (and what we need for WeOS at Westermo) is allow/deny per iface.
|
||||
|
||||
Priority
|
||||
# Disable access to SSH
|
||||
deny ssh all
|
||||
# Allow SSH connections originating from eth0
|
||||
allow ssh eth0
|
||||
|
||||
Another option, to further extend the Inetd capabilities, is a separate
|
||||
`finetd.conf` to list services. This would be beneficial when running
|
||||
an SSH service on different ports on different interfaces:
|
||||
|
||||
# Run SSH on port 22 on all interfaces except upstream
|
||||
tcp ssh {
|
||||
listen = *, !wan0
|
||||
exec = dropbear -i
|
||||
}
|
||||
|
||||
# Run SSH on non-standard port 222 for upstream interface
|
||||
tcp 222 {
|
||||
listen = wan0
|
||||
exec = dropbear -i
|
||||
wait = yes
|
||||
}
|
||||
|
||||
# Run TFTP service on all interfaces except upstream interface
|
||||
udp tftp {
|
||||
listen = *, !wan0
|
||||
exec = uftpd -i -t
|
||||
user = root
|
||||
}
|
||||
|
||||
Syntax very similar to [xinetd](http://en.wikipedia.org/wiki/Xinetd)
|
||||
|
||||
|
||||
Crond
|
||||
-----
|
||||
|
||||
Requirements are quite rudimentary, basic cron functionality, mainly
|
||||
system-level timed periodic tasks:
|
||||
|
||||
* Periodically run a task, in a matching runlevel
|
||||
* Optionally run as non-root (`crontab -e` as operator)
|
||||
|
||||
Proposed syntax:
|
||||
|
||||
# Crontab
|
||||
cron @YY-mm-ddTHH:MM [LVLS] /path/to/cmd [ARGS] -- Optional descr
|
||||
|
||||
# One-shot 'at' command
|
||||
at @YY-mm-ddTHH:MM [LVLS] /path/to/cmd [ARGS] -- Optional descr
|
||||
|
||||
Notice the ISO date in notation. The runlevels is extra filtering
|
||||
sugar. E.g., if cron service is only allowed in runlevels two or three
|
||||
it will not start if system currently is in runlevel four.
|
||||
|
||||
To run a command as another user the `.conf` file must have a that
|
||||
owner. E.g., `/etc/finit.d/extra.conf` may be owned by operator and
|
||||
only hold `cron ...` lines.
|
||||
|
||||
What would be extremely useful is if `initctl`, or a homegrown `at`,
|
||||
could support the basic functionality of the `at` command directly from
|
||||
the shell -- that way setting up one-time jobs would not entail
|
||||
re-reading `/etc/finit.conf`
|
||||
|
||||
|
||||
Watchdog
|
||||
--------
|
||||
|
||||
The intent of finit is to monitor not just processes, but also to
|
||||
be able to supervise the entire system and the behavior of certain
|
||||
processes that declare themselves to be finit compliant.
|
||||
Support for monitoring the health of the system and its processes.
|
||||
|
||||
* Integrate the ingenious libev to handle all events: signals, polling
|
||||
fd's, etc. Because "Event driven software improves concurrency" --
|
||||
Dave Zarzycki, Apple.
|
||||
|
||||
See the [launchd video](http://www.youtube.com/watch?v=cD_s6Fjdri8)
|
||||
for more info!
|
||||
|
||||
* Add support for a /dev/watchdog plugin to replace watchdogd
|
||||
|
||||
* Integrate watchdog plugin with process/system supervisor to optionally
|
||||
reboot the system when a process stops responding, or when a respawn
|
||||
limit has been reached, as well as when system load gets too high.
|
||||
|
||||
|
||||
Configuration
|
||||
-------------
|
||||
|
||||
* Add support for `init <q | reload-configuration>` and `SIGHUP` to
|
||||
have finit reload its `finit.conf`, but also
|
||||
|
||||
* Add support for inotify to automatically reload `finit.conf`
|
||||
|
||||
|
||||
Runlevels
|
||||
---------
|
||||
|
||||
* Implement `initctl stop|start|restart|reload|status <SVC>` and
|
||||
`service <SVC> stop|start|restart|reload|status` on top
|
||||
|
||||
* Add PRE and POST hooks for when switching between runlevels
|
||||
|
||||
|
||||
Miscellaneous
|
||||
-------------
|
||||
|
||||
* Add support for `init -v,--version | version`
|
||||
* Cleanup move sources from top-level directory to `src/` and `include/`
|
||||
* Make sure to install `queue.h` to `$(PREFIX)/include/finit/queue.h`
|
||||
* Move `finit.conf` "check" command to plugin which checks `/etc/fstab`
|
||||
instead. This is the de-facto practice. But keep the check command
|
||||
for really low-end systems w/o `/etc/fstab`.
|
||||
* Add support for a `/dev/watchdog` plugin to replace `watchdogd`
|
||||
* Integrate system supervisor to optionally reboot the system when a
|
||||
process stops responding, or when a respawn limit has been reached,
|
||||
as well as when system load gets too high.
|
||||
* API for processes to register with the watchdog.
|
||||
- Deeper monitoring of a process main loop
|
||||
- If a process is not heard from within its subscribed period time
|
||||
reboot system or restart process.
|
||||
* Separate `/etc/watchdog.conf` configuration file, or a perhaps
|
||||
support for `/etc/finit.d/PLUGIN.conf`?
|
||||
* Support enable/disable watchdog features:
|
||||
- Supervise processes,
|
||||
- CPU loadavg,
|
||||
- Watch for file descriptor leaks,
|
||||
- etc.
|
||||
|
||||
|
||||
Documentation
|
||||
-------------
|
||||
|
||||
* Write man pages for finit and `finit.conf`, steal from the excellent
|
||||
`pimd` man pages ...
|
||||
* Update Debian `finit.conf` example with runlevels, `tty/console` and
|
||||
dependency handling
|
||||
* Write man pages for finit and `finit.conf`, steal from the excellent
|
||||
`pimd` man pages ...
|
||||
* Update Debian `finit.conf` example with runlevels, `tty/console` and
|
||||
dependency handling for Debian 8 (the dreaded systemd release).
|
||||
|
||||
|
||||
Investigation
|
||||
-------------
|
||||
|
||||
* [FHS changes](http://askubuntu.com/questions/57297/why-has-var-run-been-migrated-to-run)
|
||||
affecting runtime status, plugins, etc.
|
||||
* [FHS changes](http://askubuntu.com/questions/57297/why-has-var-run-been-migrated-to-run)
|
||||
affecting runtime status, plugins, etc.
|
||||
|
||||
|
||||
@@ -131,27 +131,6 @@ static int client(int argc, char *argv[])
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int run_loop(void)
|
||||
{
|
||||
int delay = DELAY_TTY ?: 1;
|
||||
|
||||
_d("Entering main loop ...");
|
||||
while (1) {
|
||||
svc_monitor();
|
||||
plugin_monitor();
|
||||
|
||||
/* Delayed start of TTYs to let the system stabilize
|
||||
* after switching runlevels. */
|
||||
if (delay) {
|
||||
if (--delay == 0)
|
||||
tty_runlevel(runlevel);
|
||||
continue;
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void banner(void)
|
||||
{
|
||||
delline();
|
||||
@@ -160,6 +139,8 @@ static void banner(void)
|
||||
|
||||
int main(int argc, char* argv[])
|
||||
{
|
||||
uev_ctx_t ctx;
|
||||
|
||||
if (getpid() != 1)
|
||||
return client(argc, argv);
|
||||
|
||||
@@ -173,6 +154,11 @@ int main(int argc, char* argv[])
|
||||
*/
|
||||
sig_init();
|
||||
|
||||
/*
|
||||
* Initalize event context.
|
||||
*/
|
||||
uev_init(&ctx);
|
||||
|
||||
/*
|
||||
* Mount base file system, kernel is assumed to run devtmpfs for /dev
|
||||
*/
|
||||
@@ -208,7 +194,7 @@ int main(int argc, char* argv[])
|
||||
* hook on to.
|
||||
*/
|
||||
print_desc("Loading plugins", NULL);
|
||||
print_result(plugin_load_all(PLUGIN_PATH));
|
||||
print_result(plugin_load_all(&ctx, PLUGIN_PATH));
|
||||
|
||||
/*
|
||||
* Mount filesystems
|
||||
@@ -232,7 +218,7 @@ int main(int argc, char* argv[])
|
||||
run_interactive("rm -rf /tmp/* /var/run/* /var/lock/*", "Cleanup temporary directories");
|
||||
|
||||
/* Base FS up, enable standard SysV init signals */
|
||||
sig_setup();
|
||||
sig_setup(&ctx);
|
||||
|
||||
_d("Base FS up, calling hooks ...");
|
||||
plugin_run_hooks(HOOK_BASEFS_UP);
|
||||
@@ -279,10 +265,13 @@ int main(int argc, char* argv[])
|
||||
/* Hooks that should run at the very end */
|
||||
plugin_run_hooks(HOOK_SYSTEM_UP);
|
||||
|
||||
/* Start TTYs */
|
||||
tty_runlevel(runlevel);
|
||||
|
||||
/*
|
||||
* Enter main loop to monior /dev/initctl and services
|
||||
*/
|
||||
return run_loop();
|
||||
return uev_run(&ctx, 0);
|
||||
}
|
||||
|
||||
/**
|
||||
|
||||
@@ -65,9 +65,6 @@
|
||||
# define DEFHOST "noname"
|
||||
#endif
|
||||
|
||||
/* Delay start of GETTY at boot. Must be > 0 */
|
||||
#define DELAY_TTY 2
|
||||
|
||||
#define CMD_SIZE 256
|
||||
#define LINE_SIZE 1024
|
||||
#define BUF_SIZE 4096
|
||||
|
||||
@@ -446,7 +446,7 @@ int run(char *cmd)
|
||||
return 1;
|
||||
}
|
||||
|
||||
pid = fork();
|
||||
pid = vfork();
|
||||
if (0 == pid) {
|
||||
int i;
|
||||
FILE *fp;
|
||||
@@ -466,7 +466,9 @@ int run(char *cmd)
|
||||
dup2(fd, STDERR_FILENO);
|
||||
}
|
||||
|
||||
sig_unblock();
|
||||
execvp(args[0], args);
|
||||
|
||||
_exit(1); /* Only if execv() fails. */
|
||||
} else if (-1 == pid) {
|
||||
_pe("%s", args[0]);
|
||||
@@ -563,13 +565,11 @@ int run_interactive(char *cmd, char *fmt, ...)
|
||||
|
||||
pid_t run_getty(char *cmd, char *args[], int console)
|
||||
{
|
||||
pid_t pid = fork();
|
||||
pid_t pid = vfork();
|
||||
|
||||
if (!pid) {
|
||||
int i, fd;
|
||||
int fd;
|
||||
char c;
|
||||
sigset_t nmask;
|
||||
struct sigaction sa;
|
||||
|
||||
if (console) {
|
||||
/* Detach from initial controlling TTY */
|
||||
@@ -590,13 +590,13 @@ pid_t run_getty(char *cmd, char *args[], int console)
|
||||
|
||||
prctl(PR_SET_NAME, "console", 0, 0, 0);
|
||||
}
|
||||
sigemptyset(&nmask);
|
||||
sigaddset(&nmask, SIGCHLD);
|
||||
sigprocmask(SIG_UNBLOCK, &nmask, NULL);
|
||||
|
||||
/* Reset signal handlers that were set by the parent process */
|
||||
for (i = 1; i < NSIG; i++)
|
||||
DFLSIG(sa, i, 0);
|
||||
sig_unblock();
|
||||
|
||||
setsid();
|
||||
|
||||
if (ioctl(STDIN_FILENO, TIOCSCTTY, 1) < 0)
|
||||
_pe("Failed TIOCSCTTY");
|
||||
|
||||
while (!fexist(SYNC_SHUTDOWN)) {
|
||||
static const char msg[] = "\nPlease press Enter to activate this console.";
|
||||
@@ -629,7 +629,7 @@ pid_t run_getty(char *cmd, char *args[], int console)
|
||||
int run_parts(char *dir, char *cmd)
|
||||
{
|
||||
struct dirent **e;
|
||||
int i, num;
|
||||
volatile int i, num;
|
||||
|
||||
num = scandir(dir, &e, NULL, alphasort);
|
||||
if (num < 0) {
|
||||
@@ -669,9 +669,10 @@ int run_parts(char *dir, char *cmd)
|
||||
}
|
||||
args[j++] = NULL;
|
||||
|
||||
pid = fork();
|
||||
pid = vfork();
|
||||
if (!pid) {
|
||||
_d("Calling %s ...", path);
|
||||
sig_unblock();
|
||||
execv(path, args);
|
||||
exit(0);
|
||||
}
|
||||
|
||||
Binary file not shown.
|
After Width: | Height: | Size: 69 KiB |
Binary file not shown.
|
After Width: | Height: | Size: 35 KiB |
Submodule
+1
Submodule libuev added at 5c7a6f1163
@@ -36,10 +36,8 @@
|
||||
|
||||
#define is_io_plugin(p) ((p)->io.cb && (p)->io.fd >= 0)
|
||||
|
||||
static char *plugpath = NULL; /* Set by first load. */
|
||||
static size_t num_fds = 0;
|
||||
static struct pollfd fds[MAX_NUM_FDS];
|
||||
static TAILQ_HEAD(, plugin) plugins = TAILQ_HEAD_INITIALIZER(plugins);
|
||||
static char *plugpath = NULL; /* Set by first load. */
|
||||
static TAILQ_HEAD(, plugin) plugins = TAILQ_HEAD_INITIALIZER(plugins);
|
||||
|
||||
static void check_plugin_depends(plugin_t *plugin);
|
||||
|
||||
@@ -69,15 +67,8 @@ int plugin_register(plugin_t *plugin)
|
||||
|
||||
check_plugin_depends(plugin);
|
||||
|
||||
if (is_io_plugin(plugin)) {
|
||||
if (num_fds + 1 >= MAX_NUM_FDS) {
|
||||
num_fds = MAX_NUM_SVC;
|
||||
errno = ENOMEM;
|
||||
return 1;
|
||||
}
|
||||
num_fds++;
|
||||
if (is_io_plugin(plugin))
|
||||
inuse++;
|
||||
}
|
||||
|
||||
if (plugin->svc.cb) {
|
||||
svc_t *svc = svc_find(plugin->name);
|
||||
@@ -189,62 +180,29 @@ void plugin_run_hooks(hook_point_t no)
|
||||
}
|
||||
|
||||
/* Generic libev I/O callback, looks up correct plugin and calls its callback */
|
||||
static void generic_io_cb(struct pollfd *io)
|
||||
static void generic_io_cb(uev_ctx_t *UNUSED(ctx), uev_t *w, void *arg, int events)
|
||||
{
|
||||
plugin_t *p, *tmp;
|
||||
plugin_t *p = (plugin_t *)arg;
|
||||
|
||||
/* Find matching plugin, pick first matching fd */
|
||||
PLUGIN_ITERATOR(p, tmp) {
|
||||
if (is_io_plugin(p) && p->io.fd == io->fd) {
|
||||
_d("Calling I/O %s from runloop...", basename(p->name));
|
||||
p->io.cb(p->io.arg, io->fd, io->events);
|
||||
if (is_io_plugin(p) && p->io.fd == w->fd) {
|
||||
_d("Calling I/O %s from runloop...", basename(p->name));
|
||||
p->io.cb(p->io.arg, w->fd, events);
|
||||
|
||||
/* Update fd, may be changed by plugin callback, e.g., if FIFO */
|
||||
io->fd = p->io.fd;
|
||||
io->events = p->io.flags;
|
||||
io->revents = 0;
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
void plugin_monitor(void)
|
||||
{
|
||||
int ret;
|
||||
size_t i;
|
||||
|
||||
while ((ret = poll(fds, num_fds, 500))) {
|
||||
if (-1 == ret) {
|
||||
if (EINTR == errno)
|
||||
continue;
|
||||
|
||||
_e("Failed polling I/O plugin descriptors, error %d: %s",
|
||||
errno, strerror(errno));
|
||||
break;
|
||||
}
|
||||
|
||||
/* Traverse all I/O fds and run callbacks */
|
||||
for (i = 0; i < num_fds; i++) {
|
||||
if (fds[i].revents)
|
||||
generic_io_cb(&fds[i]);
|
||||
}
|
||||
|
||||
break;
|
||||
/* Update fd, may be changed by plugin callback, e.g., if FIFO */
|
||||
if (p->io.fd != w->fd)
|
||||
uev_io_set (w, p->io.fd, p->io.flags);
|
||||
}
|
||||
}
|
||||
|
||||
/* Setup any I/O callbacks for plugins that use them */
|
||||
static void init_plugins(void)
|
||||
static void init_plugins(uev_ctx_t *ctx)
|
||||
{
|
||||
int i = 0;
|
||||
plugin_t *p, *tmp;
|
||||
|
||||
PLUGIN_ITERATOR(p, tmp) {
|
||||
if (is_io_plugin(p)) {
|
||||
_d("Initializing plugin %s for I/O", basename(p->name));
|
||||
fds[i].revents = 0;
|
||||
fds[i].events = p->io.flags;
|
||||
fds[i++].fd = p->io.fd;
|
||||
uev_io_init(ctx, &p->watcher, generic_io_cb, p, p->io.fd, p->io.flags);
|
||||
}
|
||||
}
|
||||
}
|
||||
@@ -318,7 +276,7 @@ static void check_plugin_depends(plugin_t *plugin)
|
||||
}
|
||||
}
|
||||
|
||||
int plugin_load_all(char *path)
|
||||
int plugin_load_all(uev_ctx_t *ctx, char *path)
|
||||
{
|
||||
int fail = 0;
|
||||
DIR *dp = opendir(path);
|
||||
@@ -341,7 +299,7 @@ int plugin_load_all(char *path)
|
||||
}
|
||||
|
||||
closedir(dp);
|
||||
init_plugins();
|
||||
init_plugins(ctx);
|
||||
|
||||
return fail;
|
||||
}
|
||||
|
||||
@@ -24,13 +24,13 @@
|
||||
#ifndef FINIT_PLUGIN_H_
|
||||
#define FINIT_PLUGIN_H_
|
||||
|
||||
#include <poll.h>
|
||||
#include "queue.h" /* BSD sys/queue.h API */
|
||||
#include "svc.h"
|
||||
#include "libuev/uev.h"
|
||||
|
||||
#define PLUGIN_DEP_MAX 10
|
||||
#define PLUGIN_IO_READ POLLIN
|
||||
#define PLUGIN_IO_WRITE POLLOUT
|
||||
#define PLUGIN_IO_READ UEV_READ
|
||||
#define PLUGIN_IO_WRITE UEV_WRITE
|
||||
|
||||
#define PLUGIN_INIT(x) static void __attribute__ ((constructor)) x(void)
|
||||
#define PLUGIN_EXIT(x) static void __attribute__ ((destructor)) x(void)
|
||||
@@ -79,6 +79,9 @@ typedef struct plugin {
|
||||
/* BSD sys/queue.h linked list node. */
|
||||
TAILQ_ENTRY(plugin) link;
|
||||
|
||||
/* Event loop handler, used internally by Finit */
|
||||
uev_t watcher;
|
||||
|
||||
/* Plugin name, defaults to basename of plugin path if unset.
|
||||
* NOTE: Must be same as @cmd for service plugins! */
|
||||
char *name;
|
||||
|
||||
+3
-2
@@ -26,16 +26,17 @@
|
||||
#include <sys/stat.h>
|
||||
|
||||
#include "finit.h"
|
||||
#include "libite/lite.h"
|
||||
#include "helpers.h"
|
||||
#include "plugin.h"
|
||||
|
||||
static void setup(void *UNUSED(arg))
|
||||
{
|
||||
#ifdef RANDOMSEED
|
||||
copyfile(RANDOMSEED, "/dev/urandom", 0);
|
||||
copyfile(RANDOMSEED, "/dev/urandom", 0, 0);
|
||||
unlink(RANDOMSEED);
|
||||
umask(077);
|
||||
copyfile("/dev/urandom", RANDOMSEED, 4096);
|
||||
copyfile("/dev/urandom", RANDOMSEED, 4096, 0);
|
||||
umask(0);
|
||||
#endif
|
||||
}
|
||||
|
||||
@@ -29,11 +29,10 @@
|
||||
#include "plugin.h"
|
||||
|
||||
void svc_bootstrap (void);
|
||||
void svc_monitor (void);
|
||||
void svc_monitor (pid_t lost);
|
||||
|
||||
void plugin_run_hooks (hook_point_t no);
|
||||
int plugin_load_all (char *path);
|
||||
void plugin_monitor (void);
|
||||
int plugin_load_all (uev_ctx_t *ctx, char *path);
|
||||
|
||||
#endif /* FINIT_PRIVATE_H_ */
|
||||
|
||||
|
||||
@@ -47,9 +47,13 @@
|
||||
#include "private.h"
|
||||
#include "sig.h"
|
||||
|
||||
static int stopped = 0;
|
||||
static int stopped = 0;
|
||||
static uev_t sigint_watcher, sigpwr_watcher;
|
||||
static uev_t sigchld_watcher;
|
||||
static uev_t sigstop_watcher, sigtstp_watcher, sigcont_watcher;
|
||||
|
||||
void do_shutdown (int sig)
|
||||
|
||||
void do_shutdown(int sig)
|
||||
{
|
||||
touch(SYNC_SHUTDOWN);
|
||||
|
||||
@@ -84,38 +88,35 @@ void do_shutdown (int sig)
|
||||
}
|
||||
|
||||
/*
|
||||
* Shut down on INT USR1 USR2
|
||||
* Shut down on INT PWR
|
||||
*/
|
||||
static void shutdown_handler(int sig, siginfo_t *info, void *UNUSED(ctx))
|
||||
static void sigint_cb(uev_ctx_t *UNUSED(ctx), uev_t *w, void *UNUSED(arg), int UNUSED(events))
|
||||
{
|
||||
_d("Rebooting on signal %d from %s (PID %d)",
|
||||
sig, pid_get_name(info->si_pid, NULL, 0), info->si_pid);
|
||||
|
||||
do_shutdown(sig);
|
||||
do_shutdown(w->signo);
|
||||
}
|
||||
|
||||
/*
|
||||
* SIGCHLD: one of our children has died
|
||||
*/
|
||||
static void chld_handler(int UNUSED(sig), siginfo_t *UNUSED(info), void *UNUSED(ctx))
|
||||
static void sigchld_cb(uev_ctx_t *UNUSED(ctx), uev_t *UNUSED(w), void *UNUSED(arg), int UNUSED(events))
|
||||
{
|
||||
/* Do nothing, the svc_monitor() is the designated child reaper. */
|
||||
svc_monitor(waitpid(-1, NULL, WNOHANG));
|
||||
}
|
||||
|
||||
/*
|
||||
* SIGSTOP: Paused by user or netflash
|
||||
* SIGSTOP/SIGTSTP: Paused by user or netflash
|
||||
*/
|
||||
static void sigstop_handler(int sig, siginfo_t *info, void *UNUSED(ctx))
|
||||
static void sigstop_cb(uev_ctx_t *UNUSED(ctx), uev_t *UNUSED(w), void *UNUSED(arg), int UNUSED(events))
|
||||
{
|
||||
_d("Received SIGSTOP(%d) from %s (PID %d)",
|
||||
sig, pid_get_name(info->si_pid, NULL, 0), info->si_pid);
|
||||
touch(SYNC_STOPPED);
|
||||
stopped++;
|
||||
}
|
||||
static void sigcont_handler(int sig, siginfo_t *info, void *UNUSED(ctx))
|
||||
|
||||
/*
|
||||
* SIGCONT: Restart service monitor
|
||||
*/
|
||||
static void sigcont_cb(uev_ctx_t *UNUSED(ctx), uev_t *UNUSED(w), void *UNUSED(arg), int UNUSED(events))
|
||||
{
|
||||
_d("Received SIGCONT(%d) from %s (PID %d)",
|
||||
sig, pid_get_name(info->si_pid, NULL, 0), info->si_pid);
|
||||
stopped = 0;
|
||||
erase(SYNC_STOPPED);
|
||||
}
|
||||
@@ -131,6 +132,11 @@ int sig_stopped(void)
|
||||
/*
|
||||
* Inital signal setup - ignore everything but SIGCHLD until we're capable of responding
|
||||
*/
|
||||
static void chld_handler(int UNUSED(sig), siginfo_t *UNUSED(info), void *UNUSED(ctx))
|
||||
{
|
||||
/* NOP */
|
||||
}
|
||||
|
||||
void sig_init(void)
|
||||
{
|
||||
int i;
|
||||
@@ -142,10 +148,33 @@ void sig_init(void)
|
||||
SETSIG(sa, SIGCHLD, chld_handler, SA_RESTART);
|
||||
}
|
||||
|
||||
/*
|
||||
* Unblock all signals blocked by finit when starting children
|
||||
*/
|
||||
void sig_unblock(void)
|
||||
{
|
||||
int i;
|
||||
sigset_t nmask;
|
||||
struct sigaction sa;
|
||||
|
||||
sigemptyset(&nmask);
|
||||
sigaddset(&nmask, SIGCHLD);
|
||||
sigaddset(&nmask, SIGINT);
|
||||
sigaddset(&nmask, SIGPWR);
|
||||
sigaddset(&nmask, SIGSTOP);
|
||||
sigaddset(&nmask, SIGTSTP);
|
||||
sigaddset(&nmask, SIGCONT);
|
||||
sigprocmask(SIG_UNBLOCK, &nmask, NULL);
|
||||
|
||||
/* Reset signal handlers that were set by the parent process */
|
||||
for (i = 1; i < NSIG; i++)
|
||||
DFLSIG(sa, i, 0);
|
||||
}
|
||||
|
||||
/*
|
||||
* Setup limited set of SysV compatible signals to respond to
|
||||
*/
|
||||
void sig_setup(void)
|
||||
void sig_setup(uev_ctx_t *ctx)
|
||||
{
|
||||
struct sigaction sa;
|
||||
|
||||
@@ -156,12 +185,12 @@ void sig_setup(void)
|
||||
erase(SYNC_STOPPED);
|
||||
|
||||
/* Standard SysV init calls ctrl-alt-delete handler */
|
||||
SETSIG(sa, SIGINT, shutdown_handler, 0);
|
||||
SETSIG(sa, SIGPWR, shutdown_handler, 0);
|
||||
uev_signal_init(ctx, &sigint_watcher, sigint_cb, NULL, SIGINT);
|
||||
uev_signal_init(ctx, &sigpwr_watcher, sigint_cb, NULL, SIGPWR);
|
||||
|
||||
/* Ignore SIGUSR1/2 for now, only BusyBox init implements them as reboot+halt. */
|
||||
// SETSIG2(sa, SIGUSR1, reopen_initctl, 0);
|
||||
// SETSIG2(sa, SIGUSR2, pwrdwn_handler, 0);
|
||||
// uev_signal_init(&ctx, &sigusr1_watcher, reopen_initctl_cb, NULL, SIGUSR1);
|
||||
// uev_signal_init(&ctx, &sigusr2_watcher, pwrdwn_cb, NULL, SIGUSR2);
|
||||
|
||||
/* Init must ignore SIGTERM. May otherwise get false SIGTERM in forked children! */
|
||||
IGNSIG(sa, SIGTERM, 0);
|
||||
@@ -172,10 +201,13 @@ void sig_setup(void)
|
||||
/* We don't have any /etc/inittab yet, reread finit.conf? */
|
||||
IGNSIG(sa, SIGHUP, 0);
|
||||
|
||||
/* After initial bootstrap of Finit we call the service monitor to reap children */
|
||||
uev_signal_init(ctx, &sigchld_watcher, sigchld_cb, NULL, SIGCHLD);
|
||||
|
||||
/* Stopping init is a bit tricky. */
|
||||
SETSIG(sa, SIGSTOP, sigstop_handler, 0);
|
||||
SETSIG(sa, SIGTSTP, sigstop_handler, 0);
|
||||
SETSIG(sa, SIGCONT, sigcont_handler, 0);
|
||||
uev_signal_init(ctx, &sigstop_watcher, sigstop_cb, NULL, SIGSTOP);
|
||||
uev_signal_init(ctx, &sigtstp_watcher, sigstop_cb, NULL, SIGTSTP);
|
||||
uev_signal_init(ctx, &sigcont_watcher, sigcont_cb, NULL, SIGCONT);
|
||||
|
||||
/* Disable CTRL-ALT-DELETE from kernel, we handle shutdown gracefully with SIGINT, above */
|
||||
reboot(RB_DISABLE_CAD);
|
||||
|
||||
@@ -26,6 +26,7 @@
|
||||
#define FINIT_SIG_H_
|
||||
|
||||
#include <signal.h>
|
||||
#include "libuev/uev.h"
|
||||
|
||||
#define SYNC_SHUTDOWN "/var/lock/finit.shutdown"
|
||||
#define SYNC_STOPPED "/var/lock/finit.stopped"
|
||||
@@ -57,7 +58,8 @@
|
||||
void do_shutdown (int sig);
|
||||
int sig_stopped (void);
|
||||
void sig_init (void);
|
||||
void sig_setup (void);
|
||||
void sig_unblock (void);
|
||||
void sig_setup (uev_ctx_t *ctx);
|
||||
|
||||
#endif /* FINIT_SIG_H_ */
|
||||
|
||||
|
||||
@@ -362,9 +362,8 @@ static void restart_any_lost_procs(void)
|
||||
}
|
||||
}
|
||||
|
||||
void svc_monitor(void)
|
||||
void svc_monitor(pid_t lost)
|
||||
{
|
||||
pid_t lost;
|
||||
svc_t *svc;
|
||||
|
||||
if (was_stopped && !is_norespawn()) {
|
||||
@@ -373,10 +372,6 @@ void svc_monitor(void)
|
||||
return;
|
||||
}
|
||||
|
||||
lost = waitpid(-1, NULL, WNOHANG);
|
||||
if (lost < 1)
|
||||
return;
|
||||
|
||||
if (fexist(SYNC_SHUTDOWN) || lost <= 1)
|
||||
return;
|
||||
|
||||
@@ -458,7 +453,7 @@ int svc_start(svc_t *svc)
|
||||
sigaddset(&nmask, SIGCHLD);
|
||||
sigprocmask(SIG_BLOCK, &nmask, &omask);
|
||||
|
||||
pid = fork();
|
||||
pid = vfork();
|
||||
sigprocmask(SIG_SETMASK, &omask, NULL);
|
||||
if (pid == 0) {
|
||||
int i = 0;
|
||||
|
||||
@@ -144,7 +144,7 @@ void tty_start(finit_tty_t *tty)
|
||||
#elif defined(GETTY_BUSYBOX)
|
||||
snprintf(line, sizeof(line), "%s %d %s %s", GETTY, tty->baud, tty->name, tty->term ?: "");
|
||||
#else
|
||||
strlcpy(line, FALLBACK_CONSOLE, sizeof(line));
|
||||
strlcpy(line, FALLBACK_SHELL, sizeof(line));
|
||||
#endif
|
||||
} else {
|
||||
strlcpy(line, tty->name, sizeof(line));
|
||||
@@ -179,7 +179,7 @@ int tty_enabled(finit_tty_t *tty, int runlevel)
|
||||
|
||||
if (!ISSET(tty->runlevels, runlevel))
|
||||
return 0;
|
||||
else if (fexist(tty->name))
|
||||
if (fexist(tty->name))
|
||||
return 1;
|
||||
|
||||
return 0;
|
||||
|
||||
Reference in New Issue
Block a user