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Casts are visually heavy, and can obscure unwanted truncations.
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AND term usually don't have many subterms (4 seems to be the maximum
sensible number, e.g. _BOOT_ID && _SYSTEMD_UNIT && _PID && MESSAGE_ID).
Nevertheless, the cost of checking each subterm can be relatively
high, especially when the nested terms are compound, and it
makes sense to minimize the number of checks.
Instead of looping to the end and then again over the whole list once
again after at least one term changed the offset, start the loop at
the term which caused the change. This way ½ terms in the AND match
are not checked unnecessarily again.
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--user basically gives messages from your own systemd --user services.
--system basically gives messages from PID 1, kernel, and --system
services. Those two options are not exahustive, because a priviledged
user might be able to see messages from other users, and they will not
be shown with either or both of those flags.
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This is the just the library part.
SD_JOURNAL_CURRENT_USER flags is added to sd_j_open(), to open
files from current user.
SD_JOURNAL_SYSTEM_ONLY is renamed to SD_JOURNAL_SYSTEM,
and changed to mean to (also) open system files. This way various
flags can be combined, which gives them nicer semantics, especially
if other ones are added later.
Backwards compatibility is kept, because SD_JOURNAL_SYSTEM_ONLY
is equivalent to SD_JOURNAL_SYSTEM if used alone, and before there
we no other flags.
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$ journalctl -o verbose _EXE=/quiet/binary -f
-- Logs begin at Sun 2013-03-17 17:28:22 EDT. --
Failed to get realtime timestamp: Cannot assign requested address
JOURNAL_FOREACH_DATA_RETVAL is added, which allows the caller
to get the return value from sd_journal_enumerate_data. I think
we might want to expose this macro like SD_JOURNAL_FOREACH_DATA,
but for now it is in journal-internal.h.
There's a change in behaviour for output_*, not only in
output_verbose, that errors in sd_j_enumerate_data are not silently
ignored anymore.
https://bugs.freedesktop.org/show_bug.cgi?id=56459
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Also reworded a few debug messages for brevity, and added a log
statement which prints out the filter at debug level:
Journal filter: (((UNIT=sys-module-configfs.device AND _PID=1) OR (COREDUMP_UNIT=sys-module-configfs.device AND MESSAGE_ID=fc2e22bc6ee647b6b90729ab34a250b1) OR _SYSTEMD_UNIT=sys-module-configfs.device) AND _BOOT_ID=4e3c518ab0474c12ac8de7896fe6b154)
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When reporting the maximum journal size add a hint if it's limited
by KeepFree.
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Since 11ec7ce, journald isn't setting the ACLs properly anymore if
the files had no ACLs to begin with: acl_set_fd fails with EINVAL.
An ACL with ACL_USER or ACL_GROUP entries but no ACL_MASK entry is
invalid, so make sure a mask exists before trying to set the ACL.
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Use timespec_store instead of (incorrectly) doing it inline.
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static hostname and if the static hostname is set, too
https://bugzilla.redhat.com/show_bug.cgi?id=957814
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Otherwise we might end up with executable files if some default ACL is
set for the journal directory.
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and the disk is close to being full
Bump the minimal size of the journal so that we can be sure creating the
journal file will always succeed. Previously the minimum size was
smaller than a empty jounral file...
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As some SSDs are still seeing performance degredation when
reaching 85% usage the default value of 5% seems a little low.
Set this to 15% by default.
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I'm assuming that it's fine if a _const_ or _pure_ function
calls assert. It is assumed that the assert won't trigger,
and even if it does, it can only trigger on the first call
with a given set of parameters, and we don't care if the
compiler moves the order of calls.
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I typically run VMs with 1024MiB allocated; systemd is unable to write
coredumps in this scenario at all because the default kernel
configuration will only overcommit 50% of available RAM.
Avoid this failure by using a realloc() loop.
See: http://lists.freedesktop.org/archives/systemd-devel/2013-April/010709.html
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Disallow recursive .include, and make it unavailable in anything but
unit files.
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A small patch to remove a build warnining when SELinux is disabled.
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Freeing in error path is the common pattern with set_put().
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Session objects will now get the .session suffix, user objects the .user
suffix, nspawn containers the .nspawn suffix.
This also changes the user cgroups to be named after the numeric UID
rather than the username, since this allows us the parse these paths
standalone without requiring access to the cgroup file system.
This also changes the mapping of instanced units to cgroups. Instead of
mapping foo@bar.service to the cgroup path /user/foo@.service/bar we
will now map it to /user/foo@.service/foo@bar.service, in order to
ensure that all our objects are properly suffixed in the tree.
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This reverts commit 4826f0b7b5c0aefa08b8cc7ef64d69027f84da2c.
Because statfs.t_type can be int on some architecures, we have to cast
the const magic to the type, otherwise the compiler warns about
signed/unsigned comparison, because the magic can be 32 bit unsigned.
statfs(2) man page is also wrong on some systems, because
f_type is not __SWORD_TYPE on some architecures.
The following program:
int main(int argc, char**argv)
{
struct statfs s;
statfs(argv[1], &s);
printf("sizeof(f_type) = %d\n", sizeof(s.f_type));
printf("sizeof(__SWORD_TYPE) = %d\n", sizeof(__SWORD_TYPE));
printf("sizeof(long) = %d\n", sizeof(long));
printf("sizeof(int) = %d\n", sizeof(int));
if (sizeof(s.f_type) == sizeof(int)) {
printf("f_type = 0x%x\n", s.f_type);
} else {
printf("f_type = 0x%lx\n", s.f_type);
}
return 0;
}
executed on s390x gives for a btrfs:
sizeof(f_type) = 4
sizeof(__SWORD_TYPE) = 8
sizeof(long) = 8
sizeof(int) = 4
f_type = 0x9123683e
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direction.
https://bugs.freedesktop.org/show_bug.cgi?id=63672
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This reverts commit a858b64dddf79177e12ed30f5e8c47a1471c8bfe.
This reverts commit aea275c43194b6ac519ef907b62c5c995050fde0.
This reverts commit fc6e6d245ee3989c222a2a8cc82a33475f9922f3.
This reverts commit c4073a27c555aeceac87a3b02a83141cde641a1e.
This reverts commit cddf148028f525be8176e7f1cbbf4f862bd287f6.
This reverts commit 8c68a70170b31f93c287f29fd06c6c17edaf19ad.
The constants are now casted to __SWORD_TYPE, which should resolve the
compiler warnings about signed vs unsigned.
After talking to Kay, we concluded:
This should be fixed in the kernel, not worked around in userspace tools.
Architectures cannot use int and expect magic constants lager than INT_MAX
to work correctly. The kernel header needs to be fixed.
Even coreutils cannot handle it:
#define RAMFS_MAGIC 0x858458f6
# stat -f -c%t /
ffffffff858458f6
#define BTRFS_SUPER_MAGIC 0x9123683E
# stat -f -c%t /mnt
ffffffff9123683e
Although I found the perfect working macro to fix the thing :)
__extension__ ({ \
bool _ret = false; \
switch(f) { case c: _ret=true; }; \
( _ret ); \
})
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http://lists.freedesktop.org/archives/systemd-devel/2013-April/010510.html
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On some architectures (like s390x) the kernel has the type int for
f_type, but long in userspace.
Assigning the 32 bit magic constants from linux/magic.h to the 31 bit
signed f_type in the kernel, causes f_type to be negative for some
constants.
glibc extends the int to long for those architecures in 64 bit mode, so
the negative int becomes a negative long, which cannot be simply
compared to the original magic constant, because the compiler would
automatically cast the constant to long.
To workaround this issue, we also compare to the (int)MAGIC value in a
macro. Of course, we could do #ifdef with the architecure, but it has to
be maintained, and the magic constants are 32 bit anyway.
Someday, when the int is unsigned or long for all architectures, we can
remove this macro again. Until then, keep it as simple as it can be.
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Instead of making a type up, just use __SWORD_TYPE, after reading
statfs(2).
Too bad, this does not fix s390x because __SWORD_TYPE is (long int) and
the kernel uses (int) to fill in the field!!!!!!
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statfs.f_type is signed but the filesystem magics are unsigned.
Casting the magics to signed will not make the signed.
Problem seen on big-endian 64bit s390x with __fsword_t 8 bytes.
Casting statfs.f_type to unsigned on the other hand will get us what we
need.
https://bugzilla.redhat.com/show_bug.cgi?id=953217
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Previously only one "--unit=" or "--user-unit" could be specified.
With this patch, journalcrtl can show multiple units.
$ journalctl -u systemd-udevd.service -u sshd.service -u crond.service -b
-- Logs begin at Sa 2013-03-23 11:08:45 CET, end at Fr 2013-04-12
09:10:22 CEST. --
Apr 12 08:41:37 lenovo systemd[1]: Started udev Kernel Device Manager.
Apr 12 08:41:37 lenovo systemd[1]: Stopped udev Kernel Device Manager.
Apr 12 08:41:38 lenovo systemd[1]: Started udev Kernel Device Manager.
Apr 12 08:41:38 lenovo crond[291]: (CRON) INFO (Syslog will be used
instead of sendmail.)
Apr 12 08:41:38 lenovo crond[291]: (CRON) INFO (running with inotify
support)
Apr 12 08:41:39 lenovo systemd[1]: Starting OpenSSH server daemon...
Apr 12 08:41:39 lenovo systemd[1]: Started OpenSSH server daemon.
Apr 12 08:41:39 lenovo sshd[355]: Server listening on 0.0.0.0 port 22.
Apr 12 08:41:39 lenovo sshd[355]: Server listening on :: port 22.
Apr 12 08:41:39 lenovo mtp-probe[373]: checking bus 1, device 8:
"/sys/devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.5/1-1.5.6/1-1.5.6.2/1-1.5.6.2.1"
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When using "-p" and "-b" in combination with "-u", the output is not
what you would expect. The reason is the sd_journal_add_disjunction()
call in add_matches_for_unit() and add_matches_for_user_unit(), which
adds two ORs without taking the other conditions to every OR.
Adding another level on top with AND and sd_journal_add_conjunction()
solves the problem.
Output before:
$ journalctl -o short-monotonic -ab -p 0 -u sshd.service
-- Reboot --
[ 3.216305] lenovo systemd[1]: Starting OpenSSH server daemon...
-- Reboot --
[ 3.168666] lenovo systemd[1]: Starting OpenSSH server daemon...
[ 3.169639] lenovo systemd[1]: Started OpenSSH server daemon.
[36285.635389] lenovo systemd[1]: Stopped OpenSSH server daemon.
-- Reboot --
[ 10.838657] lenovo systemd[1]: Starting OpenSSH server daemon...
[ 10.913698] lenovo systemd[1]: Started OpenSSH server daemon.
[ 6881.035183] lenovo systemd[1]: Stopped OpenSSH server daemon.
-- Reboot --
[ 6.636228] lenovo systemd[1]: Starting OpenSSH server daemon...
[ 6.662573] lenovo systemd[1]: Started OpenSSH server daemon.
[ 6.681148] lenovo sshd[397]: Server listening on 0.0.0.0 port 22.
[ 6.681379] lenovo sshd[397]: Server listening on :: port 22.
As we see, the output is from _every_ boot and priority 0 is not taken
into account.
Output after patch:
$ journalctl -o short-monotonic -ab -p 0 -u sshd.service
-- Logs begin at Sun 2013-02-24 20:54:44 CET, end at Tue 2013-03-19 14:58:21 CET. --
Increasing the priority:
$ journalctl -o short-monotonic -ab -p 6 -u sshd.service
-- Logs begin at Sun 2013-02-24 20:54:44 CET, end at Tue 2013-03-19 14:59:12 CET. --
[ 6.636228] lenovo systemd[1]: Starting OpenSSH server daemon...
[ 6.662573] lenovo systemd[1]: Started OpenSSH server daemon.
[ 6.681148] lenovo sshd[397]: Server listening on 0.0.0.0 port 22.
[ 6.681379] lenovo sshd[397]: Server listening on :: port 22.
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I see little point in silently truncating fields when
they are explictly requested. With this change e.g.
journalctl -b MESSAGE_ID=9f26aa562cf440c2b16c773d0479b518 --field=BOOTCHART
works as expected.
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The information about the unit for which files are being parsed
is passed all the way down. This way messages land in the journal
with proper UNIT=... or USER_UNIT=... attribution.
'systemctl status' and 'journalctl -u' not displaying those messages
has been a source of confusion for users, since the journal entry for
a misspelt setting was often logged quite a bit earlier than the
failure to start a unit.
Based-on-a-patch-by: Oleksii Shevchuk <alxchk@gmail.com>
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Thanks to Cristian Ciupitu for a reproducer.
https://bugzilla.redhat.com/show_bug.cgi?id=924359
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There's now a generic _cleanup_ macro with an argument. The macros for
specific types are now defined using this macro, and in the header files
where they belong.
All cleanup handlers are now inline functions.
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containers there
Containers will now carry a label (normally derived from the root
directory name, but configurable by the user), and the container's root
cgroup is /machine/<label>. This label is called "machine name", and can
cover both containers and VMs (as soon as libvirt also makes use of
/machine/).
libsystemd-login can be used to query the machine name from a process.
This patch also includes numerous clean-ups for the cgroup code.
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<fcntl.h> is POSIX. On Linux, <sys/fcntl.h> simply includes
<fcntl.h>, so there should be on difference. On Android
likewise, except that there is some more stuff. QNX has
only <fcntl.h>.
https://bugs.freedesktop.org/show_bug.cgi?id=63423
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https://bugs.freedesktop.org/show_bug.cgi?id=63477
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