By settings AI_ADDRCONFIG in hints we cannot for example resolve "localhost"
when the local machine only has a loopback interface. This seems like an
unnecessary restriction, drop it.
Inspired by https://bugzilla.redhat.com/show_bug.cgi?id=1839007.
Symbolic names and number in the appropriate range are allowed
(log_level_from_string() DTRT already).
The target names are more messy, so we leave the verification to the service.
Heavily inspired by #15622. This adds:
systemctl service-log-level systemd-resolved
systemctl service-log-level systemd-resolved info
systemctl service-log-target systemd-resolved
systemctl service-log-target systemd-resolved console
We already have systemctl verbs log-level, log-target, and service-watchdogs.
Those two new verbs tie nicely into this scheme.
The list was rather ad hoc, with "reset-failed" sandwiched between
"help" and "list-dependencies". Since a person will usually either want
to introspect state in various ways or modify state in a certain way, let's
put all the introspection commands together and all the ones that actually
have an effect second.
Low-level cgroup freezer state manipulation is invoked directly from the
job engine when we are about to execute the job in order to make sure
the unit is not frozen and job execution is not blocked because of
that.
Currently with cgroup v1 we would needlessly do a bunch of work in the
function and even falsely update the freezer state. Don't do any of this
and skip the function silently when v2 freezer is not available.
Following bug is fixed by this commit,
$ systemd-run --unit foo.service /bin/sleep infinity
$ systemctl restart foo.service
$ systemctl show -p FreezerState foo.service
Before (cgroup v1, i.e. full "legacy" mode):
FreezerState=thawing
After:
FreezerState=running
On systems that boot without initrd on a btrfs root file systems the
BTRFS_IOC_DEV_INFO ioctl returns /dev/root as backing device. That
sucks, since that is not a real device visible to userspace.
Since this has been that way since forever, and it doesn't look like the
kernel will get fixed soon for this, let's at least generate a useful
error message in this case.
This is not a bug fix, just a tweak to make this more recognizable.
Once the kernel gets fixed to report the correct device nodes in this
case, in a way userspace can make sense of them things will magically
work for systemd, too.
(Note that this doesn't add a log message about this to really all cases
we call get_device() in, but just the main ones that are called in early
boot context, after all all there's no benefit in seeing this message
too many times.)
https://github.com/systemd/systemd/issues/16953https://bugs.freedesktop.org/show_bug.cgi?id=84689https://bugzilla.kernel.org/show_bug.cgi?id=89721
log_debug still returns 0. I think it is legitimate to use 'return log_debug()' to
return 0. It is different than the other functions, since we often want to supress
errors logged at debug level. This case is quite common in the codebase and
we could use 'return log_debug_errno()' to make the code more consise.
For all other variants, a separate return line is required.
Previous commit changes all the non-conforming instances, now we can make it mandatory.
In various cases, we would say 'return log_warning()' or 'return log_error()'. Those
functions return 0 if no error is passed in. For log_warning or log_error this doesn't
make sense, and we generally want to propagate the error. In the few cases where
the error should be ignored, I think it's better to split it in two, and call 'return 0'
on a separate line.
Binaries might not initialize SELinux, e.g. when they normally do not
create files with the SELinux default context.
If they, via an internal libary function, call a _label() function,
mac_selinux_maybe_reload() gets called. Since the SELinux status page
has not been opened, selinux_status_updated() will fail with EINVAL.
This affects particularly test binaries.
Just exit early and avoid confusing debug logs.
Let's make sure we keep a reference to the event source
(Note that this code is currently not used, which is why this was never
used: in all cases we do not add listener fds after the event is
attached, but before. In that case this code is not called.)
We support read-only ptyfwd options, and on those the input event source
won't be allocated. Deal with that and don't invoke a function on it
that will then instantly fail.
So far we kept all defines directly originating from the spec in
sd-bus-protocol.h, do this for this too.
The precise place doesn't matter much API-wise given that sd-bus.h includes
sd-bus-protocol.h, hence let's just clean this up.
This is useful information, I don't know why we forgot to add it there.
gcc doesn't like arithemetic on a pointer to a function or void*, so don't
print signedness info there. It doesn't matter anyway.
C says function pointers can be different... Though I guess our code isn't
prepared for that.
If the directory (/var/lib/private is most likely) has borked permissions, the
test will fail with a cryptic message and EXIT_STATE_DIRECTORY or similar. The
message from the child with more details gets lost somewhere. Let's avoid running
the test in that case and provide a simple error message instead.
E.g. systemd-238-12.git07f8cd5.fc28.ppc64 (which I encountered on a test machine)
has /var/lib/private with 0755.
All backslashes that should be single in shell syntax need to be written as "\\" because
our parser will remove one level of quoting. Also, single quotes were doubly nested, which
cannot work.
Should fix the following message:
test-execute/exec-dynamicuser-statedir.service:16: Ignoring unknown escape sequences: "test $$(find / \( -path /var/tmp -o -path /tmp -o -path /proc -o -path /dev/mqueue -o -path /dev/shm -o -path /sys/fs/bpf -o -path /dev/.lxc \) -prune -o -type d -writable -print 2>/dev/null | sort -u | tr -d \\n) = /var/lib/private/quux/pief/var/lib/private/waldo"
The new methods work as the unflavoured ones, but takes flags as a
single uint64_t DBUS parameters instead of different booleans, so
that it can be extended without breaking backward compatibility.
Add new flag to allow adding/removing symlinks in
[/etc|/run]/systemd/system.attached so that portable services
configuration files can be self-contained in those directories, without
affecting the system services directories.
Use the new methods and flags from portablectl --enable.
Useful in case /etc is read-only, with only the portable services
directories being mounted read-write.
Zbigniew Jędrzejewski-Szmek