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Otherwise we would hit an assert in the compression code.
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tree-wide: merge pager_open_if_enabled() to the pager_open()
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Many subsystems define own pager_open_if_enabled() function which
checks '--no-pager' command line argument and open pager depends
on its value. All implementations of pager_open_if_enabled() are
the same. Let's merger this function with pager_open() from the
shared/pager.c and remove pager_open_if_enabled() from all subsytems
to prevent code duplication.
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journal: restore offline state on error
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Throughout the tree there's spurious use of spaces separating ++ and --
operators from their respective operands. Make ++ and -- operator
consistent with the majority of existing uses; discard the spaces.
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If we fail to create the thread, technically we should leave the
offline_state as OFFLINE_JOINED, not OFFLINE_SYNCING.
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When we rotate journals, we must set offline and close the current one,
but don't generally need to wait for this to complete.
Instead, we'll initiate an asynchronous offline via
journal_file_set_offline(oldfile, false), and add the file to a
per-server set of deferred closes to be closed later when they
won't block.
There's one complication however; journal_file_open() via
journal_file_verify_header() assumes that any writable journal in the
online state is the product of an unclean shutdown or other form of
corruption.
Thus there's a need for journal_file_open() to be aware of deferred
closes and synchronize with their completion when opening preexisting
journals for writing. To facilitate this the deferred closes set is
supplied to the journal_file_open() function where the deferred closes
may be closed synchronously before verifying the header in such
circumstances.
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This adds a wait flag to journal_file_set_offline(), when false the offline is
performed asynchronously in a separate thread.
When wait is true, if an asynchronous offline is already in-progress it is
restarted and waited for. Otherwise the offline is performed synchronously
without the use of a thread.
journal_file_set_online() cancels or waits for the asynchronous offline to
complete if in-flight, depending on where in the offline process the thread
happens to be. If the thread is in the fsync() phase, it is cancelled and
waiting is unnecessary. Otherwise, the thread is joined before proceeding.
A new offline_state member is added to JournalFile which is used via
atomic operations for communicating between the offline thread and the
journal_file_set_{offline,online}() functions.
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Various buffers were lost because finish_item() either consumed
the buffer or allocated a new one (if an entry with the same key existed).
The caller would simply forget the buffer in either case.
Also add a check for the case when a valid identifier is followed by
an empty body. We should not allow this.
Also be more consistent in error handling and always print an error
message.
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Better support of OPENPGPKEY, CAA, TLSA packets and tests
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It's annoying to have the exact same function in three places.
It's stored in src/shared, but it's not added to the library to
avoid the dependency on libgcrypt.
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ISO/IEC 9899:1999 §7.21.1/2 says:
Where an argument declared as size_t n specifies the length of the array
for a function, n can have the value zero on a call to that
function. Unless explicitly stated otherwise in the description of a
particular function in this subclause, pointer arguments on such a call
shall still have valid values, as described in 7.1.4.
In base64_append_width memcpy was called as memcpy(x, NULL, 0). GCC 4.9
started making use of this and assumes This worked fine under -O0, but
does something strange under -O3.
This patch fixes a bug in base64_append_width(), fixes a possible bug in
journal_file_append_entry_internal(), and makes use of the new function
to simplify the code in other places.
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This should be handled fine now by .dir-locals.el, so need to carry that
stuff in every file.
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Remove the check that triggers rotation of the journal file when the arriving log entry had a monotonic timestamp smaller that the previous log entry. This check causes unnecessary rotations when journal-remote was receiving from multiple senders, therefore monotonicity can not be guaranteed. Also, it does not offer any useful functionality for systemd-journald.
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treewide: fix typos and spacing
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journal: miscellaneous cleanups
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Combine journal catalog entries with the same id
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None of the callers take advantage of this parameter, it's always NULL,
this is just a private helper function to simplify the call sites so
drop the template parameter altogether. If a caller emerges later who
needs it, it can be restored.
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One function per test. Remove shared state between tests.
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Instead of discarding duplicate catalog entries, we now combine
them. This allows software or admins to add or override catalog
headers, or add additional text to the catalog message.
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Introduces mmap_try_harder()
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Functions dereferencing these members should assert their non-NULL state.
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Just some additional asserts in functions dereferencing f->header.
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Let's use bitfields for our booleans, and don't try to apply binary OR or addition on them, because that's weird and we
should instead use logical OR only.
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journalctl: add match for the current boot when called with devpath (v2)
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journalctl --fields logic
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journalctl: make "journalctl /dev/sda" work
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Currently when journalctl is called with path to block device node we
add following match _KERNEL_DEVICE=b$MAJOR:$MINOR.
That is not sufficient to actually obtain logs about the disk because
dev_printk() kernel helper puts to /dev/kmsg information about the
device in following format, +$SUBSYSTEM:$ADDRESS,
e.g. "+pci:pci:0000:00:14.0".
Now we will walk upward the syspath and add match for every device in
format produced by dev_printk() as well as match for its device node if
it exists.
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No need to store the object and offset data if we don't actually need it ever.
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Fixes #2176
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This adds two new calls to get the list of all journal fields names currently in use.
This is the low-level support to implement the feature requested in #2176 in a more optimized way.
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Fixes: #2490
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Make it clear that specifing boot when there is actually only one has no
effect. This cosmetic patch improves user experience a bit.
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Also introduce sd_journal_has_runtime_files() and
sd_journal_has_persistent_files() to the public API. These functions
can be used to easily find out if the open journal files are runtime
and/or persistent.
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journald: minor fixes
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Whenever we include a log level or facility in a journal string field, make sure the compiler checks for us that that's
actually the right thing to do.
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Fixes: #2304
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Journald disk usage
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This primarily contains some minor coding style fixups for 7a24f3bf2fb181243a1957a0cdd54cd919396793 and earlier changes. Specifically:
* Don't log at log levels above LOG_DEBUG from "library" code like journal-file.c
* Don't negate errno values before passing them to log_debug_errno(), as the call can handle this fine anyway
* Cast some calls we knowingly ignore the return values of to (void)
* Don't clobber function call-by-ref return values on failure
* Don't mix function calls and variable declarations in one line
There's also one more relevant change: when failing to enqueue a journal change fs event, we'll run it immediately.
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