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If `journalctl` take a long time to process messages, and during that
time journal file rotation occurs, a `journalctl` client will keep
those rotated files open until it calls `sd_journal_process()`, which
typically happens as a result of calling `sd_journal_wait()` below in
the "following" case. By periodically calling `sd_journal_process()`
during the processing loop we shrink the window of time a client
instance has open file descriptors for rotated (deleted) journal
files.
**Warning**
This change does not appear to solve the case of a "paused" output
stream. If somebody is using `journalctl | less` and pauses the
output, then without a background thread periodically listening for
inotify delete events and cleaning up, journal logs will eventually
stop flowing in cases where a journal client with enough open files
causes the "free" disk space threshold to be crossed.
Remote= must be a non multicast address. ip-link(8) says:
> remote IPADDR - specifies the unicast destination IP address to
> use in outgoing packets when the destination link layer address
> is not known in the VXLAN device forwarding database.
Closes#8088.
Changed <filename>.service</filename> to <literal>.service</literal> to match style in other manual pages: man 5 systemd.socket, device, mount, automount, swap, target path, timer, slice and scope.
LOG_FAC() is the general way to extract the logging facility (when it has
been combined with the logging priority).
LOG_FACMASK can be used to mask off the priority so you only have the
logging facility bits... but to get the logging facility e.g. LOG_USER,
you also have to bitshift it as well. (The priority is in the low bits,
and so only requires masking).
((priority & LOG_FACMASK) == LOG_KERN) happens to work only because
LOG_KERN is 0, and hence has the same value with or without the bitshift.
Code that relies on weird assumptions like this could make it harder to
realize how the logging values are treated.
Changed "reboot" to "power off" in poweroff.target description. It was most likely copied and pasted from the reboot.target below, compare with e.g. halt.target
Previous code was using the basename(id->fragment_path) which returned
incorrect result if the unit was an instance.
For example, assuming that no instances of "template" have been created so far:
$ systemctl enable template@1
Created symlink from /etc/systemd/system/multi-user.target.wants/template@1.service to /usr/lib/systemd/system/template@.service.
$ systemctl is-enabled template@3.service
disabled
$ systemctl status template@3.service
● template@3.service - openQA Worker #3
Loaded: loaded (/usr/lib/systemd/system/template@.service; enabled; vendor preset: disabled)
[...]
Here the unit file states reported by "status" and "is-enabled" were different.
We have the raw_getpid() definition in place anyway, and it's certainly
beneficial to expose the same semantics on pre glibc 2.24 and after it
too, hence always bypass glibc for this, and always cache things on our
side.
Fixes: #8113
For quite a while now, there have been file triggers to handle
automatically setting up service units in upstream systemd. However,
most of the actions being done by these macros upon files can be set up
as RPM file triggers.
In fact, in Mageia, we had been doing this for most of these. In particular,
we have file triggers in place for sysusers, tmpfiles, hwdb, and the journal.
This change adds Lua versions of the original file triggers used in Mageia,
based on the existing Lua-based file triggers for service units.
In addition, we can also have useful file triggers for udev rules, sysctl
directives, and binfmt directives. These are based on the other existing
file triggers.
This is similar to 3c3d384ae9 and
a workaround for the following warning.
```
In file included from ../src/basic/in-addr-util.h:28,
from ../src/nss-mymachines/nss-mymachines.c:31:
../src/nss-mymachines/nss-mymachines.c: In function '_nss_mymachines_getgrnam_r':
../src/nss-mymachines/nss-mymachines.c:653:32: warning: argument to 'sizeof' in 'memset' call is the same pointer type 'char *' as the destination; expected 'char' or an explicit length [-Wsizeof-pointer-memaccess]
memzero(buffer, sizeof(char*));
^~~~
../src/basic/util.h:118:39: note: in definition of macro 'memzero'
#define memzero(x,l) (memset((x), 0, (l)))
^
../src/nss-mymachines/nss-mymachines.c: In function '_nss_mymachines_getgrgid_r':
../src/nss-mymachines/nss-mymachines.c:730:32: warning: argument to 'sizeof' in 'memset' call is the same pointer type 'char *' as the destination; expected 'char' or an explicit length [-Wsizeof-pointer-memaccess]
memzero(buffer, sizeof(char*));
^~~~
../src/basic/util.h:118:39: note: in definition of macro 'memzero'
#define memzero(x,l) (memset((x), 0, (l)))
^
```
Found by the following warning by gcc.
```
../src/network/networkd-manager.c: In function 'dhcp6_prefixes_compare_func':
../src/network/networkd-manager.c:1383:16: warning: 'memcmp' reading 16 bytes from a region of size 8 [-Wstringop-overflow=]
return memcmp(&a, &b, sizeof(*a));
^
```
Before this, each ExecRuntime object is owned by a unit. However,
it may be shared with other units which enable JoinsNamespaceOf=.
Thus, by the serialization/deserialization process, its sharing
information, more specifically, reference counter is lost, and
causes issue #7790.
This makes ExecRuntime objects be managed by manager, and changes
the serialization/deserialization process.
Fixes#7790.
Let the journal capture messages emitted by systemd, before it ran
exec("/usr/lib/systemd/systemd-journald"). Usually such messages will only
appear with `systemd.log_level=debug`. kmsg lines written after the exec()
will be ignored as before.
In other words, we are avoiding reading our own lines, which start
"systemd-journald[100]: " assuming we are PID 100. But now we will start
allowing ourself to read lines which start "systemd[100]: ", or any other
prefix which is not "systemd-journald[100]: ".
So this can't help you see messages when we fail to exec() journald :). But,
it makes it easier to see what the pre-exec() messages look like in
the successful case. Comparing messages like this can be useful when
debugging. Noticing weird omissions of messages, otoh, makes me anxious.
In file included from ../src/basic/fs-util.h:32,
from ../src/nss-systemd/nss-systemd.c:28:
../src/nss-systemd/nss-systemd.c: In function '_nss_systemd_getgrnam_r':
../src/nss-systemd/nss-systemd.c:416:32: warning: argument to 'sizeof' in 'memset' call is the same pointer type 'char *' as the destination; expected 'char' or an explicit length [-Wsizeof-pointer-memaccess]
memzero(buffer, sizeof(char*));
^~~~
../src/basic/util.h:118:39: note: in definition of macro 'memzero'
#define memzero(x,l) (memset((x), 0, (l)))
^
gcc is trying to be helpful, and it's not far from being right. It _looks_ like
sizeof(char*) is an error, but in this case we're really leaving a space empty
for a pointer, and our calculation is correct. Since this is a short file,
let's just use simplest option and turn off the warning above the two functions
that trigger it.
I expect that this will be mostly obsoleted by transfiletriggers that
(I hope) we will soon add. But let's do this for completeness anyway.
I'm keeping the description of the macro a bit vague, since I expect
that it'll be changed when transfiletriggers are added.
This documents how the age of a file is determined, which previously was
only alluded to in other parts of the documentation. Fixes#8091.
The phrasings of “last modification timestamp” etc. are taken from
man:inode(7) (as of man-pages 4.14). The debug messages in tmpfiles.c
use different messages (“modify time”), which according to a code
comment follow man:stat(1); however, my copy of that manpage (from GNU
coreutils 8.29) documents %y as “time of last data modification”
instead.
Followed PEP8 and PEP3101 rules (#8079)
Imports re-ordered by Alphabetical Standarts for following PEP8
Old type string formattings (" example %s " % exampleVar ) re-writed as new type string
formattings ( " example {} ".format(exampleVar) ) for following PEP3101
EnvironmentFile= is used in the unit file, but in the dbus,
the related field name is EnvironmentFiles=.
As the other variables, let's use the field name instead of the name
used in the unit file setting.
`-.mount` is placed in `system.slice`, and hence depends on it.
`-.mount` is always active and can never be stopped. Therefore the same
should be true of `system.slice`.
Synthesize it as perpetual (unless systemd is running as a user manager).
Notice we also drop `Before=slices.target` as unnecessary.
AFAICS the justification for `perpetual` is to provide extra protection
against unintentionally stopping every single service. So adding
system.slice to the perpetual units is perfectly consistent.
I don't expect this will (or can) fix any other problem. And the
`perpetual` protection probably isn't formal enough to spend much time
thinking about. I've just noticed this a couple of times, as something
that looks strange.
Might be a bit surprising that we have user.slice on-disk but not
system.slice, but I think it's ok. `systemctl status system.slice` will
still point you towards `man systemd.special`. The only detail is that the
system slice disables `DefaultDependencies`. If you're worrying about how
system shutdown works when you read `man systemd.slice`, I think it is not
too hard to guess that system.slice might do this:
> Only slice units involved with early boot
> or late system shutdown should disable this option
(Docs are great. I really appreciate the systemd ones).
`IgnoreOnIsolate=yes` is the default for slices and scopes. So it's not
essential to set it on root.slice or init.scope.
We don't need to worry about a bad unit file configuration. Any attempt
to stop these unit should fail, since we mark them as `perpetual`.
Also since init.scope cannot be stopped, there is no point setting
`KillSignal=SIGRTMIN+14`. According to both documentation and testing,
KillSignal= does not affect the behaviour of `systemctl kill`.
The VDSO provided by the kernel for x32, uses x86-64 syscalls instead of
x32 ones.
I think we can safely allow this; the set of x86-64 syscalls should be
very similar to the x32 ones. The real point is not to allow *x86*
syscalls, because some of those are inconveniently multiplexed and we're
apparently not able to block the specific actions we want to.
the whole systemd-analyze time logic is based on the fact that monotonic
time 0 is the start of the kernel.
If the firmware does not provide a correct time, firmware_time degrades to
0, which is the start of the kernel. The diference between FinishTime and
firmware_time is thus correct.
That assumption is still true with containers, but the start time of the
kernel is not what the user expects : It's the time when the host booted.
The total is thus still correct, but highly misleading. Containers can be
easily detected (and, in fact, already are) by systemd not reporting any
kernel non-monotonic timestamp.
This patch simply avoids printing a misleading time when it can detect that
case
