| Commit message (Collapse) | Author | Age |
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http://lists.freedesktop.org/archives/systemd-devel/2015-February/027960.html
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quiet should really just have an effect on the stuff we dump on the
console, not what we log elsewhere.
Hence:
debug on kernel cmdline → interpreted by every tool, turns up
log levels to "debug" everywhere.
quiet on kernel cmdline → interpreted only by PID 1 (and
obviously the kernel) no alteration of the max log level, but
turns off status output.
http://lists.freedesktop.org/archives/systemd-devel/2014-December/026271.html
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If we scale our buffer to be wide enough for the format string, we
should expect that the calculation was correct.
char_array_0() invocations are removed, since snprintf nul-terminates
the output in any case.
A similar wrapper is used for strftime calls, but only in timedatectl.c.
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Types used for pids and uids in various interfaces are unpredictable.
Too bad.
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syslog priority
This is useful when we execute our own programs, reading output from its
STDERR, and want to retain priority information.
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This enables us to write things like this:
int open_some_file(void) {
fd = open("/dev/foobar", O_RDWR|O_CLOEXEC);
if (fd < 0)
return log_error_errno(errno, "Failed to reboot: %m");
return fd;
}
Which is function that returns -errno on failure, as well as printing an
error message, all in one line.
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in log_struct()
That way the caller may use %m to print the specified error.
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sd_bus_error_set_errno() allows negative errors too, hence, be equally
nice.
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- Rename log_meta() → log_internal(), to follow naming scheme of most
other log functions that are usually invoked through macros, but never
directly.
- Rename log_info_object() to log_object_info(), simply because the
object should be before any other parameters, to follow OO-style
programming style.
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log_error_errno() as log calls that take error numbers
This change has two benefits:
- The format string %m will now resolve to the specified error (or to
errno if the specified error is 0. This allows getting rid of a ton of
strerror() invocations, a function that is not thread-safe.
- The specified error can be passed to the journal in the ERRNO= field.
Now of course, we just need somebody to convert all cases of this:
log_error("Something happened: %s", strerror(-r));
into thus:
log_error_errno(-r, "Something happened: %m");
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fix 1237557 Unchecked return value from library
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CID# 1251162
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only, and for all tools
Previously, we ended up parsing some of them three times: in main.c when
processing the kernel cmdline, in main.c when processing the process
cmdline (only for containers), and in log.c again.
Let's streamline this, and only parse them in log.c
In PID 1 also make sure we parse "quiet" first, and then override this
with the more specific checks in log.c
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We don't support journal-less systems anyway, so let's avoid the
confusion.
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$ systemd-analyze verify trailing-g.service
[./trailing-g.service:2] Trailing garbage, ignoring.
trailing-g.service lacks ExecStart setting. Refusing.
Error: org.freedesktop.systemd1.LoadFailed: Unit trailing-g.service failed to load: Invalid argument.
Failed to create trailing-g.service/start: Invalid argument
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String which ended in an unfinished quote were accepted, potentially
with bad memory accesses.
Reject anything which ends in a unfished quote, or contains
non-whitespace characters right after the closing quote.
_FOREACH_WORD now returns the invalid character in *state. But this return
value is not checked anywhere yet.
Also, make 'word' and 'state' variables const pointers, and rename 'w'
to 'word' in various places. Things are easier to read if the same name
is used consistently.
mbiebl_> am I correct that something like this doesn't work
mbiebl_> ExecStart=/usr/bin/encfs --extpass='/bin/systemd-ask-passwd "Unlock EncFS"'
mbiebl_> systemd seems to strip of the quotes
mbiebl_> systemctl status shows
mbiebl_> ExecStart=/usr/bin/encfs --extpass='/bin/systemd-ask-password Unlock EncFS $RootDir $MountPoint
mbiebl_> which is pretty weird
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The message for SYSTEMD_LOG_LEVEL= looked a bit strange.
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cmdline
"debug" should apply to all tools, but "quiet" only to PID1.
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It was forgotten in b1e90ec515408aec2702522f6f68c4920b56375b
See https://bugs.freedesktop.org/show_bug.cgi?id=79582
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No functional change expected :)
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safe_close() automatically becomes a NOP when a negative fd is passed,
and returns -1 unconditionally. This makes it easy to write lines like
this:
fd = safe_close(fd);
Which will close an fd if it is open, and reset the fd variable
correctly.
By making use of this new scheme we can drop a > 200 lines of code that
was required to test for non-negative fds or to reset the closed fd
variable afterwards.
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Bring some arrays that are used for DEFINE_STRING_TABLE_LOOKUP() in the
same order than the enums they reference.
Also, pass the corresponding _MAX value to the array initalizer where
appropriate.
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If PID 1 debug logging is enabled, it is nice to keep those settings
when switching to systemd-shutdown binary, independently of whether
this was done through /proc/cmdline options, or through runtime
manipulations.
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For a user, the timeout of 1 min per message seems equivalent to a hang.
If journald cannot process a message from PID1 for 10 ms then something
is significantly wrong. It's better to lose the message and continue.
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reconnect
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Instead, force reopen it only if we really really have to.
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also define noreturn w/o <stdnoreturn.h>
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% build/journalctl help
Assertion 'match_is_valid(data, size)' failed at ../src/journal/sd-journal.c:227, function sd_journal_add_match(). Ignoring.
Callers cannot be expect to check all arguments always.
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Previously, the logging sockets were asynchronous and if clogged we'd
lose messages. We did this to be extra careful given that PID 1 might
need to spawn the logging daemon as response to PID 1's own log messages
and we really should avoid a deadlock in that case.
As it turns out this causes loss of too many messages, hence make the
socket blocking again, however put a time limit on it to avoid unbounded
deadlocks in the unlikely case they happen.
https://bugs.freedesktop.org/show_bug.cgi?id=66664
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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.
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This reverts commit 4a01181e460686d8b4a543b1dfa7f77c9e3c5ab8.
This patch broke LOG_TARGET_AUTO, i.e. automatic selection of STDERR if
it is a TTY with a fallback on the journal and kmsg otherwise.
The general rule should probably be:
log_open() -- open the "best" possible logging channel according to
log_target configuration.
log_dispatch() -- don't open any log channels ever, with the exception
of kmsg since that has no drawbacks. And do this only on true errors of
the better log channel, not just when it wasn't opened.
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write_to_journal() returns 0 if journal_fd is closed and nothing is
written. We need to make sure we'll try log_open_kmsg() then to make the
fallback work for "journal-or-kmsg".
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The new microhttpd logger doesn't know this information. It is
better to log nothing than fake values.
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Explicit zeroing is replaced with initialization to {0}.
No functional change.
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Adding UNIT= to log lines allows them to be shown
in 'systemctl status' output, etc.
A new set of macros and functions is added. This allows for less
verbose notation than using log_struct() explicitly.
The set of logging functions is expanded to take a pair of arguments
(e.g. "UNIT=" and the RHS) which add an extra line to the structured
log entry. This can be used to add macros which add a different
identifier later on.
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https://bugs.freedesktop.org/show_bug.cgi?id=55213
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https://bugs.freedesktop.org/show_bug.cgi?id=54766
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