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free() cannot be used with const pointers. However, our _cleanup_free_
handler features cast logic that hides that qualifier, so we don't get a
warning.
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In the english language the first character of a sentence is supposed to
be uppercase. Let's make sure this also applies to the journal
verification error messages.
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When we encounter a journal file with exactly zero entries, print a nice
message and exit, and don't print a weird error message.
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Only objects of type DATA may be compressed, generate a message about
that, like we do for all other errros.
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A journal file that carries no objects should be considered valid.
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When a new journal file is created we write the header first, then sync
and only then create the data and field hash tables in them. That means
to other processes it might appear that the files have a valid header
but not data and field hash tables. Our reader code should be able to
deal with this.
With this change we'll not map the two hash tables right-away after
opening a file for reading anymore (because that will of course fail if
the objects are missing), but delay this until the first time we access
them. On top of that, when we want to look something up in the hash
tables and we notice they aren't initialized yet, we consider them
empty.
This improves handling of some journal files reported in #487.
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If we determine the progress based on a number of objects available,
don't blindly devide by the number of objects, given that it might be 0.
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http://lists.freedesktop.org/archives/systemd-devel/2015-July/033574.html
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sd-bus: introduce new sd_bus_flush_close_unref() call
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sd_bus_flush_close_unref() is a call that simply combines sd_bus_flush()
(which writes all unwritten messages out) + sd_bus_close() (which
terminates the connection, releasing all unread messages) +
sd_bus_unref() (which frees the connection).
The combination of this call is used pretty frequently in systemd tools
right before exiting, and should also be relevant for most external
clients, and is hence useful to cover in a call of its own.
Previously the combination of the three calls was already done in the
_cleanup_bus_close_unref_ macro, but this was only available internally.
Also see #327
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systemd-journald races with systemd-tmpfiles-setup, and hence both are
started at about the same time. On a bare-bones system (e.g. with
empty /var, or even non-existent /var), systemd-tmpfiles will create
/var/log. But it can happen too late, that is systemd-journald already
attempted to mkdir /var/log/journal, ignoring the error. Thus failing
to create /var/log/journal. One option, without modifiying the
dependency graph is to create /var/log/journal directory with parents,
when persistent storage has been requested.
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Let's work around crappy clocks in test-journal-interleaving.c too. This
does the same as 98d2a5341788b49e82d628dfdc2e241af6d70dcd but for
test-journal-interlaving.c rather than test-journal-stream.c.
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This ensures that we write strictly monotonic timestamps into the
journal files, to ensure that we can properly interleave everything
correctly.
See #175 for details.
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everywhere: port everything to sigprocmask_many() and friends
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This ports a lot of manual code over to sigprocmask_many() and friends.
Also, we now consistly check for sigprocmask() failures with
assert_se(), since the call cannot realistically fail unless there's a
programming error.
Also encloses a few sd_event_add_signal() calls with (void) when we
ignore the return values for it knowingly.
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This adds a "char *extra" parameter to tempfn_xxxxxx(), tempfn_random(),
tempfn_ranomd_child(). If non-NULL this string is included in the middle
of the newly created file name. This is useful for being able to
distuingish the kind of temporary file when we see one.
This also adds tests for the three call.
For now, we don't make use of this at all, but port all users over.
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journald: do not strip leading whitespace from messages
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Keep leading whitespace for compatibility with older syslog
implementations. Also useful when piping formatted output to the
`logger` command. Keep removing trailing whitespace.
Tested with `pstree | logger` and checking that the output of
`journalctl | tail` included aligned and formatted output.
Confirmed that all test cases still pass as expected.
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Otherwise, if the socket is constantly busy we will never return to the
event loop, but we really need to to dispatch other (possibly more
high-priority) events too. Hence, return after dispatching one message
to the event handler, and rely on the event loop calling us back
right-away.
Fixes #125
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It's only marginally shorter then the usual for() loop, but certainly
more readable.
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By using our homegrown function we can dispense with all the iffdefery.
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mask/handlers
Also, when the child is potentially long-running make sure to set a
death signal.
Also, ignore the result of the reset operations explicitly by casting
them to (void).
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No functional changes.
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Instead of use LIST_FOREACH_SAFE, just use the same, seperate destructor
everywhere.
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All functions should either log the errors they run into, or only return
them in which case the caller should log them.
Make sure this rule is followed, so that each error is logged precisely
once, and neither never, nor more than once.
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So far we tried to reserve the _t suffix to types we use like a value in
contrast to types we use as objects, hence let's do this in journalctl
too.
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let's try to be valgrind clean
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That way we can be sure we execute the destructors properly, and can be
valgrind-clean.
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This method should greatly improve offset based lookup, by simply jumping
from one boot to the next boot. It starts at the journal head to get the
a boot ID, makes a _BOOT_ID match and then comes from the opposite
journal direction (tail) to get to the end that boot. After flushing the matches
and advancing the journal from that exact position, we arrive at the start
of next boot. Rinse and repeat.
This is faster than the old method of aggregating the full boot listing just
so we can jump to a specific boot, which can be a real pain on big journals
just for a mere "-b -1" case.
As an additional benefit --list-boots should improve slightly too, because
it does less seeking.
Note that there can be a change in boot order with this lookup method
because it will use the order of boots in the journal, not the realtime stamp
stored in them. That's arguably better, though.
Another deficiency is that it will get confused with boots interleaving in the
journal, therefore, it will refuse operation in --merge, --file and --directory mode.
https://bugs.freedesktop.org/show_bug.cgi?id=72601
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Only if both keep_free and max_use are actually 0 we can shortcut things
and avoid vacuuming. If either are positive or -1 we need to execute the
vacuuming.
http://lists.freedesktop.org/archives/systemd-devel/2015-April/031382.html
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Looks like sizeof(struct Header) is 240 not 224
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They are not currently used, but the Makefile rules don't know that.
It's easier to ignore them, then to special-case creation rules.
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A variety of changes:
- Make sure all our calls distuingish OOM from other errors if OOM is
not the only error possible.
- Be much stricter when parsing escaped paths, do not accept trailing or
leading escaped slashes.
- Change unit validation to take a bit mask for allowing plain names,
instance names or template names or an combination thereof.
- Refuse manipulating invalid unit name
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Instead of looking up the tty from STDIN, let utmp_wall() take an argument
to specify an origin tty for the wall message. Only if that argument is
NULL do the STDIN lookup.
Also add an void *userdata argument that is handed back to the callback
function.
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<audit-1400> is replaced by AVC, etc.
A fallback mechanism is provided for unlisted event types.
Occasionally new types are added to the kernel, but not too often.
Add a simple "test", which simply prints the mapping.
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- fix some memory leaks on error conditions
- handle all error cases properly, and log about failures
- move HAVE_ACL and no-HAVE_ACL code closer to each other
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This way users have the freedom to set or unset the FS_NOCOW_FL flag on
their journal files by setting it on the journal directory. Since our
default tmpfiles configuration now sets this flag on the directory the
flag is set by default on new files, however people can opt-out of this
by masking the tmpfiles file for it.
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This shouldn't really fail and anyway not much we can do about it.
CID #996292, #996294, #996295.
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Change cunescape() to return a normal error code, so that we can
distuingish OOM errors from parse errors.
This also adds a flags parameter to control whether "relaxed" or normal
parsing shall be done. If set no parse failures are generated, and the
only reason why cunescape() can fail is OOM.
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