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this allows system administrators to define which runlevels to use,
could permit them for example, to include the module in another pam file
to customize when user scripts are auto-started, for example, allowing
users to define a 'remote' runlevel that would be executed in a ssh
login
Signed-off-by: Anna (navi) Figueiredo Gomes <navi@vlhl.dev>
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temporary system for testing, it's gonna store any environment variables
defined in export_vars="", and subsequent services will load them.
ideally we only want to load the variables saved by services we depend
on, so that would change later.
Signed-off-by: Anna (navi) Figueiredo Gomes <navi@vlhl.dev>
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creates all the directories in a give path. only the last directory in
the path return -1 to EEXIST. any other error is always returned.
Signed-off-by: Anna (navi) Figueiredo Gomes <navi@vlhl.dev>
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Signed-off-by: Anna (navi) Figueiredo Gomes <navi@vlhl.dev>
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Signed-off-by: Anna (navi) Figueiredo Gomes <navi@vlhl.dev>
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Signed-off-by: Anna (navi) Figueiredo Gomes <navi@vlhl.dev>
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Signed-off-by: Anna (navi) Figueiredo Gomes <navi@vlhl.dev>
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this simplifies the allocation of path string. also fixes some memory
leaks from the ealier commit
also changes the log path for users to XDG_CACHE_HOME, default
~/.cache/openrc
Signed-off-by: Anna (navi) Figueiredo Gomes <navi@vlhl.dev>
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the pam module sets a variable that when in user mode, openrc should
pick up and either create/increment, or decrement. this is done so that
multiple session_open and session_close from pam doesn't randomly change
the user runlevel for the current user. only the first session open
starts the default runlevel, and only the last session close switches to
the none runlevel.
Signed-off-by: Anna (navi) Figueiredo Gomes <navi@vlhl.dev>
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the module gets the pam user and executes a new login shell, in order to
load the user's environment. this requires that the user's login shell
supports `-c` as an option to run a command. all shells that i know of
do.
Signed-off-by: Anna (navi) Figueiredo Gomes <navi@vlhl.dev>
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Signed-off-by: Anna (navi) Figueiredo Gomes <navi@vlhl.dev>
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Also add ~/.local/share/openrc for data files (like logs)
This is done to help avoid name conflictions for anything else that
might create/user files in .config/
Signed-off-by: Anna (navi) Figueiredo Gomes <navi@vlhl.dev>
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This change read a user version of rc.conf, to be located in
`~/.config/rc.conf`. The user version is loaded first, so it has
priority, thus overriding the system settings.
Signed-off-by: Anna (navi) Figueiredo Gomes <navi@vlhl.dev>
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Using ${HOME} works when the user runs any librc program from the shell,
but trying to invoke them from pam or similar, the variable is not set.
Signed-off-by: Anna (navi) Figueiredo Gomes <navi@vlhl.dev>
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Modifies many functions where filesystem paths were hardcoded. In
non-user-services mode, they still are. In user-services mode, they are
allocated, since XDG_ dirs are to be set via environment variables.
Signed-off-by: Anna (navi) Figueiredo Gomes <navi@vlhl.dev>
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Since user services run as the user that is starting them, they won't be
able to make use of cgroups.
Signed-off-by: Anna (navi) Figueiredo Gomes <navi@vlhl.dev>
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Conditionally add system provided configs for user services. The local
configs for the same services take priority.
Signed-off-by: Anna (navi) Figueiredo Gomes <navi@vlhl.dev>
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For dependency calculation for user services. When in user service mode,
non-user services are not considered.
Signed-off-by: Anna (navi) Figueiredo Gomes <navi@vlhl.dev>
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Those functions allocates and set up the environment for user services.
Signed-off-by: Anna (navi) Figueiredo Gomes <navi@vlhl.dev>
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This improves resource management by assigning services to individual
cgroups.
X-Gentoo-Bug: https://bugs.gentoo.org/914972
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When building on embedded SDKs such as Buildroot or Yocto, if OpenRC has a
previous installation, the package will fail the installation step as the
openrc-init is already a symlink to "${DESTDIR}/${sbindir}"/init. Force
symlinking to prevent errors when reinstalling the package.
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With the addition of logger process redirect in supervise-daemon,
pipes.c and pipes.h are now included in both s-s-d and supervise-daemon.
Thus it makes sense to move the source files to the src/shared dir.
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Allows redirecting process stdin and stdout to another process,
just like is already possible with start-stop-daemon.
Also added --stdout-logger and --stderr-logger to the man page.
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Add fallback for the close_range syscall wrapper. This is needed for
musl libc, which currently does not have a close_range wrapper.
Also set errno on errors.
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Set file descriptors to CLOEXEC instead of closing them before exec,
similar to what we do in supervise-daemon.
Use the share cloexec_fds_from() helper for this.
closefrom() is no longer used so remove the test.
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Move logic to set file descriptors to a cloexec_fds_from() function in
misc.c so it can be shared by both supervisor-daemon and
start-stop-daemon, and hide the details behind.
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Use HAVE_CLOSE_RANGE to tell if system provides a close_range(2)
wrapper, which better explains the purpose.
Add a compat inline which returns -1 if close_range is unavailable.
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It is apparently for a piece of code that no longer exist.
There don't seem to be any part of the code referring to this directory (anymore, if there was).
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`>=glibc-2.38` implements strlcpy, strlcat, etc so check for those functions
with Meson and don't provide conflicting prototypes.
Technically, it doesn't need _GNU_SOURCE, but it's easier because it's not
clear right now what glibc wants to guard it with. Note that these are in
POSIX next anyway.
Fixes: https://github.com/OpenRC/openrc/issues/643
Signed-off-by: Sam James <sam@gentoo.org>
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Commit fc4f15d6cd8e7884f7094e5d3749b01f2d5a448f broke the automatic restart of
services having runlevel-specific conf.d files.
The double dirname() was not a mistake, but the way of getting from the
service script in init.d to the upper directory containing the conf.d
directory. dirname() modifies the argument in-place, so the second call
operated on a modified value. To make it more obvious what is going on,
have the second call operate on the returned value from the first call.
Fixes: fc4f15d ("openrc: fix double-assignment to dir")
Signed-off-by: Sven Wegener <sven.wegener@stealer.net>
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It breaks bash-completion.
It's not necessary to set extglob as patterns in '[[' after '=='
are always matched as if extglob were set.
Closes: #636
Signed-off-by: Jernej Jakob <jernej.jakob@gmail.com>
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This commit removes the secondary mention of the -2/--stderr flag in the
start-stop-daemon man page. The flag's functionality was already
sufficiently described in an earlier section of the text.
Signed-off-by: Petr Vaněk <arkamar@atlas.cz>
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Fix typo preventing the args for the vewend applet from being handled.
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This was originally introduced in 14625346c07a2a66fe77ce578c9423918bec1d97 with
an example list (just one for rc_parallel) of options. Let's add in rc_interactive
as it's a pretty obvious thing one might want to override.
See https://forums.gentoo.org/viewtopic-p-8694588.html.
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svc_exec waits until SIGCHLD comes in to close its input, but in
rc_parallel case the SIGCHLD might be unrelated.
Checking the proper pid is found in signal handler and only signaling
signal_pipe the status code directly avoids this problem.
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work around scary warnings described in previous commit
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restarting a service with --no-deps ran into a "hairy workaround", which
had a few problems discussed in [1]:
- it ignores --dry-run, really restarting the requested service
- if the service was stopped, the program is started but the service
status stays stopped. This makes long-lived services impossible to
(re)start again (pid already exists and running), and the service also
won't stop on shutdown.
The kludge had a long comment describing the following situation:
- openvpn needs net and dns
- net restarts dns
- dns needs net
If the restart in net handled deps, openrc would deadlock waiting for
net in dns' restart, as net won't be started until that is done.
Restarting with --nodeps works around the deadlock, but can display
errors without the kludge (note that the services did start properly
anyway, the problem is that the default service path tries to lock dns
twice from openvn's dep's start and net's start's restart):
---
alpine:~# rc-service openvn start
openvn | * Caching service dependencies ... [ ok ]
net |net starting
net |dns | * Call to flock failed: Resource temporarily unavailable
net |dns | * ERROR: dns stopped by something else
net |net started
dns |dns started
openvn |openvn started
alpine:~# rc-status | grep s[1-3]
net [ started ]
dns [ started ]
openvn [ started ]
---
Locking again in restart --nodep can fail in two patterns:
- openvpn's need dependency start was first, and the restart in net
failed (case above): we can just silence locking failures and exit quietly
with restart --no-deps, which is not worse than trying to restart while
another process hold the lock.
- the restart in net's start was first, and openvpn's need dependency
start failed: not much can be done here short of adding a new status
that a no-deps restart is in progress as in the comment, but this case
can actually just be solved by adjusting dependencies -- and it actually
has already been fixed: the current openvpn init script in alpine only
'use dns', so it will not try to start it, and that will start just
fine with openvpn -> net -> dns only each starting each other once
sequentially.
Another failure pattern is just starting dns directly: that will start
net, which will try to restart dns while we are starting it.
Silencing messages on restart also solves this.
Link: https://github.com/OpenRC/openrc/issues/224 [1]
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according to the linux manpage, the "safe" variant may not be available
on all platform. however we bundle our own `queue.h` so this should not
be an issue.
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the pid list will be accessed inside the SIGCHLD signal handler. so we
must ensure SIGCHLD handler doesn't get invoked while the list is at an
inconsistent state making it unsafe to interact with.
Co-authored-by: Dominique MARTINET <dominique.martinet@atmark-techno.com>
Bug: https://github.com/OpenRC/openrc/issues/589#issuecomment-1406588576
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`free` is not async-signal-safe and calling it inside a signal handler
can have bad effects, as reported in the musl ML:
https://www.openwall.com/lists/musl/2023/01/23/1
the solution:
- keep track of weather remove_pid() is being called from inside a
signal handler or not.
- if it's inside a signal handler then DO NOT call free - instead put
that pointer into a "to be freed later" list.
- if it's not inside a signal handler then take the "to be freed later"
list and free anything in it.
Bug: https://github.com/OpenRC/openrc/issues/589
Reported-by: Dominique MARTINET <dominique.martinet@atmark-techno.com>
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problem:
* vfork has been removed from POSIX [0].
* clang-tidy flags the `strerror` and `eerror` call inside the vfork-ed
child as undefined behavior.
solution: use posix_spawnp, which is serves similar purpose and is
specified in posix. and as an added bonus, it's also easier to use and
less lines of code.
[0]: https://www.man7.org/linux/man-pages/man2/vfork.2.html#CONFORMING_TO
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