In 49998b383 (journald: do not overwrite syslog facility when
parsing priority) journald started ignoring facility part when
reading service stderr to convert to syslog messages. In this
case it is fine, because only the priority is allowed.
But the same codepath is used for syslog messages, where the
facility should be used. Split the two codepaths by explicitly
specyfing whether the facility should be ignored or not.
https://bugzilla.redhat.com/show_bug.cgi?id=988814
When journald encounters a message with OBJECT_PID= set
coming from a priviledged process (UID==0), additional fields
will be added to the message:
OBJECT_UID=,
OBJECT_GID=,
OBJECT_COMM=,
OBJECT_EXE=,
OBJECT_CMDLINE=,
OBJECT_AUDIT_SESSION=,
OBJECT_AUDIT_LOGINUID=,
OBJECT_SYSTEMD_CGROUP=,
OBJECT_SYSTEMD_SESSION=,
OBJECT_SYSTEMD_OWNER_UID=,
OBJECT_SYSTEMD_UNIT= or OBJECT_SYSTEMD_USER_UNIT=.
This is for other logging daemons, like setroubleshoot, to be able to
augment their logs with data about the process.
https://bugzilla.redhat.com/show_bug.cgi?id=951627
Before, we would initialize many fields twice: first
by filling the structure with zeros, and then a second
time with the real values. We can let the compiler do
the job for us, avoiding one copy.
A downside of this patch is that text gets slightly
bigger. This is because all zero() calls are effectively
inlined:
$ size build/.libs/systemd
text data bss dec hex filename
before 897737 107300 2560 1007597 f5fed build/.libs/systemd
after 897873 107300 2560 1007733 f6075 build/.libs/systemd
… actually less than 1‰.
A few asserts that the parameter is not null had to be removed. I
don't think this changes much, because first, it is quite unlikely
for the assert to fail, and second, an immediate SEGV is almost as
good as an assert.
The point is to allow the use of journald functions by other binaries.
Before, journald code was split into multiple files (journald-*.[ch]),
but all those files all required functions from journald.c. And
journald.c has its own main(). Now, it is possible to link against
those functions, e.g. from test binaries.
This constitutes a fix for https://bugzilla.redhat.com/show_bug.cgi?id=872638.
The patch does the following:
1. rename journald.h to journald-server.h and move corresponding code
to journald-server.c.
2. add journald-server.c and other journald-*.c parts to
libsystemd-journal-internal.
3. remove journald-syslog.c from test_journal_syslog_SOURCES, since
it is now contained in libsystemd-journal-internal.
There are no code changes, apart from the removal of a few static's,
to allow function calls between files.
Valgrind says:
==29176== Conditional jump or move depends on uninitialised value(s)
==29176== at 0x412A85: cunescape_length_with_prefix (util.c:1565)
==29176== by 0x40B351: dev_kmsg_record (journald-kmsg.c:301)
==29176== by 0x40B653: server_read_dev_kmsg (journald-kmsg.c:347)
==29176== by 0x40B701: server_flush_dev_kmsg (journald-kmsg.c:365)
==29176== by 0x409DE7: main (journald.c:1535)
