This patch fixes issue #51 by reverting b4b63d3, which is not needed
anymore since service callbacks have been removed from Finit3.
The `sig_unblock()` function, called for each forked off child, should
now be balanced with caught signals.
Signed-off-by: Joachim Nilsson <troglobit@gmail.com>
We can safely skip tmpfs, nothing to clean from previous boot there.
In fact, if we clean it we may spoil things for udev, which saves
pre-boot files in /run/udev.
Signed-off-by: Joachim Nilsson <troglobit@gmail.com>
This patch removes the long standing Watchdog daemon from the TODO list.
We now have a bare-bones watchdog service built-in to Finit, with
support for handing over to an external, and possibly more advanced,
using the initctl API.
Signed-off-by: Joachim Nilsson <troglobit@gmail.com>
This patch adds a simple but effective watchdog daemon with support for
handover to an external daemon, should one register using the API.
Disabled by default, enable by:
configure --enable-watchdog
The watchdog forks to the background, opening /dev/watchdog setting a
three second timeout, and kicking every second. At shutdown/reboot the
daemon will receive SIGPWR from Finit to exit and cause a WDT reboot.
Signed-off-by: Joachim Nilsson <troglobit@gmail.com>
To prevent returning the prompt too soon, and thereby messing up the
output from Finit, wait a bit after successful delivery of signal to
reboot/halt/poweroff.
Signed-off-by: Joachim Nilsson <troglobit@gmail.com>
This patch adds initial support for registering a watchdog daemon with
Finit. Needed for situations when you want the system to actually be
rebooted by the watchdog timer (WDT) circuitry rather than the kernel.
The initctl API has been extended with a INIT_CMD_WDOG_HELLO command
that is used to both register and "ping" Finit periodically. As long as
Finit responds (with an ACK) the watchdog daemon knows Finit is alive.
At shutdown Finit stops all services (except kernel threads and daemons
marked with @ in the first character of their process name) and, if a
watchdog has registered, SIGPWR is sent to it when Finit has finished
unmounting etc., just prior to kernel reboot/halt/poweroff.
Signed-off-by: Joachim Nilsson <troglobit@gmail.com>
Now that we change runlevel at shutdown/reboot, we also need to restore
terse mode before calling the shutdown hooks, like before.
Signed-off-by: Joachim Nilsson <troglobit@gmail.com>
This patch replaces kill(-1, signo) with a more fine grained
do_kill(signo) that traverses each /proc/PID, skipping kernel
threads and special [0][0] == '@' processes.
The reason for this patch is not only future compliance with
freedesktop.org standards, but also a way of not killing any
critical processes at shutdown, e.g. mdadm or watchdogd.
Signed-off-by: Joachim Nilsson <troglobit@gmail.com>
The shutdown hook is supposed to run right before services start
receiving SIGTERM. Change due to previous refactor.
Signed-off-by: Joachim Nilsson <troglobit@gmail.com>
This patch moves both the definition and the call to bootclean() from
finit.c to the bootmisc plugin. We want to call bootclean() *after*
any /run and /var file systems have been mounted.
Signed-off-by: Joachim Nilsson <troglobit@gmail.com>
- New requirements section about what Finit expects from the system
- Remove commented out `udevadm settle` code, now in README
Signed-off-by: Joachim Nilsson <troglobit@gmail.com>
On systems with systemd-udev/udevadm the trigger addition of devices at
boot wrecks havoc of /dev/console. This patch forces Finit to go silent
by default on such systems. Far from ideal, but since the actual root
cause for this messup is unknown this will have to do for now.
Also, add a settle timeout of 120 sec to the udev device tree population.
Signed-off-by: Joachim Nilsson <troglobit@gmail.com>
This patch factors out the fgetint() fallback code for parsing
/etc/services and /etc/protocols. Useful on systems with a
malfunctioning C library.
Signed-off-by: Joachim Nilsson <troglobit@gmail.com>
This patch fixes a long-standing issue with how Finit handles shutdown,
reboot and poweroff -- and even runlevel changes to runlevel 0 and 6.
Prior to this patch sig.c:do_shutdown() was called immediately on any
of the above events, disregarding any services that a user might have
wanted to run as part of the shutdown/reboot.
With this change the handling is unified in all frontends to instead
do a runlevel change followed by the do_shutdown() action.
Signed-off-by: Joachim Nilsson <troglobit@gmail.com>
The /etc/nologin file must be set as soon as the runlevel change to
0/1/6 comes in, not when done with runlevel change and services have
been started, if any.
Signed-off-by: Joachim Nilsson <troglobit@gmail.com>
As a last ditch effort to understand why an embedded system doesn't
boot, the operator should be able to see as much logs as possible
when enabling --debug mode on the kernel command line.
Signed-off-by: Joachim Nilsson <troglobit@gmail.com>
This patch adds an `--enable-fallback-shell` option to confiugre.
When enabled Finit will start `/bin/sh` on the console, but only
if there are no active TTYs running in the current runlevel.
With this it will be easier to do board bringup with Finit, but it also
enables using the fallback shell in a rescue mode (runlevel) where no
TTYs are allowed to run.
Signed-off-by: Joachim Nilsson <troglobit@gmail.com>
Also changes the default to set $HOME to / instead of nothing. This can
of course be improved immensely. Pull requests always welcome ;-)
Signed-off-by: Joachim Nilsson <troglobit@gmail.com>
This patch removes the now heavily outdated (and non-working) support
for callback plugins. I.e. plugins that attach themselves to services
listed in /etc/finit.conf and can be queried to determine if a service
should be started or stopped.
The Finit3 support for adding/removing services at runtime with plain
text *.conf files in /etc/finit.d and `initctl reload`, this old, and
rather cumbersome service callback feature, is not longer supported.
Signed-off-by: Joachim Nilsson <troglobit@gmail.com>
This patch prevents double critical/error messages from being printed on
the console when there is no syslog daemon running yet.
Signed-off-by: Joachim Nilsson <troglobit@gmail.com>
Delay setup of initctl plugin to after the base filesystems are up and
after the bootmisc plugin has run.
This patch factors out the I/O initialization of plugins so it does not
have to run when plugins are loaded. Instead, plugins can now call this
API to register an I/O callback when they are ready.
Signed-off-by: Joachim Nilsson <troglobit@gmail.com>
In UTMP a terminating zero in string fields is optional, so we need to
take that into account when preparing entrys.
Signed-off-by: Joachim Nilsson <troglobit@gmail.com>
This patch makes Finit require libuEv v1.4.2, a minor bugfix update, and
libite (-lite) v1.8.2, which is quite a bit more than just a few bug
fixes. The most relevant fixes are the removal of implicit logging for
touch(), makedir(), makefifo(), and erase() inline functions. The
release also removed implicit logging to stderr on error, as well as a
a few build fixes for running on musl libc.
Signed-off-by: Joachim Nilsson <troglobit@gmail.com>
This patch adds a very special debug mode to Finit. With this feature
enabled the actual duties of PID 1 is forked off early to a child. If
that child ever dies, usually due to a SIGSEGV, this wakes up the real
PID 1 which lauches a debug shell on the console.
Remember to disable 'quiet' and enable '--debug' on the kernel command
line to get all the debug logs -- which these days goes into the kernel
log in /dev/kmsg -- simply `cat /dev/kmsg` and use Ctrl-C to get the
shell prompt back.
Signed-off-by: Joachim Nilsson <troglobit@gmail.com>
Very early, before syslogd has started, we have traditionally been
forced to use stdout/stderr for debug, warning and error messages.
With this patch we can now rely on /dev/kmsg to preserve all logs
from early Finit problems. When syslogd/klogd starts up they read
/dev/kmsg and copy logs to /var/log/* files.
Signed-off-by: Joachim Nilsson <troglobit@gmail.com>
- Refactor getent() for improved separation and readability
- Warn and exit if /etc/protocols or /etc/services is missing
Signed-off-by: Joachim Nilsson <troglobit@gmail.com>
Joachim Nilsson