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3d793d29059a7ddf5282efa6b32b953c183d7a4d broke parsing of unit file
names that include backslashes, as extract_first_word() strips those.
Fix this, by introducing a new EXTRACT_RETAIN_ESCAPE flag which disables
looking at any flags, thus being compatible with the classic
FOREACH_WORD() behaviour.
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This way we do not rely on the size MAX* constants from the kernel headers, as these will
be out-of-sync in case we have old headers and new defines in missing.h.
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variety of fixes
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Snapshots were never useful or used for anything. Many systemd
developers that I spoke to at systemd.conf2015, didn't even know they
existed, so it is fairly safe to assume that this type can be deleted
without harm.
The fundamental problem with snapshots is that the state of the system
is dynamic, devices come and go, users log in and out, timers fire...
and restoring all units to some state from the past would "undo"
those changes, which isn't really possible.
Tested by creating a snapshot, running the new binary, and checking
that the transition did not cause errors, and the snapshot is gone,
and snapshots cannot be created anymore.
New systemctl says:
Unknown operation snapshot.
Old systemctl says:
Failed to create snapshot: Support for snapshots has been removed.
IgnoreOnSnaphost settings are warned about and ignored:
Support for option IgnoreOnSnapshot= has been removed and it is ignored
http://lists.freedesktop.org/archives/systemd-devel/2015-November/034872.html
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If quota is not enabled on a btrfs file system, accept that, and only
log a debug message, but do not consider this a reason for failure.
Fixes: #1809
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When quota is disabled there's no quota tree on the fs, which results in
the SEARCH ioctl to return ENOENT. Handle this nicely: treat this the
same way as the case where the quota tree is around but doesn't carry
the searched for fields.
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Lots of small fixes
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More refactorings in extract_first_word
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x86-32
strtoull() doesn't make it particularly easy to detect passed-in
negative numbers, as it silently converts them to positive ones without
generating any error. Since we are not interested in negative values we
should hence explicitly filter them out by looking at the string
directly and returning ERANGE if we see a leading "-".
Fixes: #1829
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specification of default time unit if none is specified
This is useful if we want to parse RLIMIT_RTTIME values where the common
UNIX syntax is without any units but refers to a non-second unit (µs in
this case), but where we want to allow specification of units.
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The macro is generically useful for putting together search paths, hence
let's make it truly generic, by dropping the implicit ".d" appending it
does, and leave that to the caller. Also rename it from
CONF_DIRS_NULSTR() to CONF_PATHS_NULSTR(), since it's not strictly about
dirs that way, but any kind of file system path.
Also, mark CONF_DIR_SPLIT_USR() as internal macro by renaming it to
_CONF_PATHS_SPLIT_USR() so that the leading underscore indicates that
it's internal.
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VIRTUALIZATION_CONTAINER_OTHER
If we don't know a container manager, we should consider it as "other"
rather than as no container manager at all, to provide a somwhat useful
upgrade path.
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[v2] treewide: treatment of errno and other cleanups
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with small manual cleanups for style.
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doc: typo and ortho fixes
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Just skip them in place, instead of setting separator=true. We only do
that in a single place (while finding a separator outside of quote or
backslash states) so we don't really need a separate state for it.
Tested that no regressions were introduced in test-extract-word. Ran a
full `make check` and also installed the binaries on a test system and
did not see any issues related to parsing unit files or starting units
after a reboot.
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Use inner loops to keep processing the same state, except when there is
a state change, then break back to the outer loop so that the correct
branch can be selected again.
Tested that no regressions were introduced in test-extract-word.
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This will make it easier to use inner loops to keep looping in the same
state, by just updating p and c in the same way in the inner loops.
Tested that no regressions were created in test-extract-word.
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It's a pretty small optimization but doesn't hurt...
Tested with test-extract-word.
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Using `goto` might be appropriate for the "finish" cases but it was
really not necessary at this point of the code... Just use if/else
blocks to accomplish the same.
Confirmed that the test cases in test-extract-word keep working as
expected.
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This block runs once before all the other handling, so move it outside
the main loop and put it in its own loop until it's finished doing its
job.
Tested by confirming `make check` (and particularly test-extract-word)
still passes and by booting a system with binaries including this
commit.
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Some guests (ARM, AArch64, x86-RHEL) have 'KVM' in the product name.
Look for that first in order to more precisely report "kvm" when
detecting a QEMU/KVM guest. Without this patch we report "qemu",
even if KVM acceleration is in use on ARM/AArch64 guests.
I've only tested a backported version of this and the previous
patch on an AArch64 guest (which worked). Of course it would be
nice to get regression testing on all guest types that depend on
dmi done.
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ARM/AArch64 guests now have SMBIOS tables populated (when boot
with a late enough QEMU and a late enough AAVMF is used as the
bootloader). Furthermore, when booting ARM/AArch64 guests with
ACPI, the DT detection obviously no longer works, so we need
dmi detection.
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afaict, this will fix a regression caused by commit 75f86906c5.
Where we used to report "kvm" before that patch, without this patch,
we would only report "qemu". The reason is because cpuid detection
must come before dmi detection. Also, both can safely come before
other xen heuristics. Untested.
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After all, this is not some compiler or C magic, but something very
specific to how systemd works, hence let's move it into def.h, and out
of macro.h
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debug-generator: respect kernel parameters for default unit setting
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We have enough places where we parse an ifindex, hence introduce a
proper parsing function for it, that verifies all parameters.
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Let's not eat up errors in shall_restore_state(), but in the consumers
instead, just for the sake of keeping the library calls generic.
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Only that way it actually has an effect on all our sockets, including
$NOTIFY_SOCKET.
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memory_erase() so far just called memset(), which the compiler might
optimize away under certain conditions if it feels there's benefit in
it. C11 knows a new memset_s() call that is like memset(), but may not
be optimized away. Ideally, we'd just use that call, but glibc currently
does not support it. Hence, implement our own simplistic version of it.
We use a GCC pragma to turn off optimization for this call, and also use
the "volatile" keyword on the pointers to ensure that gcc will use the
pointers as-is. According to a variety of internet sources, either one
does the trick. However, there are also reports that at least the
volatile thing isn't fully correct, hence let's add some snake oil and
employ both techniques.
https://news.ycombinator.com/item?id=4711346
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utf8.[ch]: use char32_t and char16_t instead of int, int32_t, int16_t
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rework C11 utf8.[ch] to use char32_t instead of uint32_t when referring
to unicode chars, to make things more expressive.
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This adds support for a new environment variable
SYSTEMCTL_INSTALL_CLIENT_SIDE, that ensures that systemctl executes
install operations client-side instead of passing them to PID1. This is
useful in debugging situations, but even beyond that. However, we don't
want to make it official API, hence let's just make it an undocumented
environment variable.
Similar, add a second variable, SYSTEMCTL_SKIP_SYSV which allows
skipping the SysV chkconfig fall-back if set. This is useful for similar
reasons, and exposed as undocumented as environment variable for similar
reasons, too.
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Tested CPUAffinity ranges on both a service unit and in system.conf and
confirmed they work as expected (by inspecting /proc/PID/status, for the
main pid of the service and for pid 1). Also mixed ranges with both
spaces, commas, trailing commas and spaces.
Added new tests to increase coverage of ranges and prevent regressions.
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This function will be useful for CPUAffinity settings that involve
ranges of CPUs.
Make it generic and include test coverage to prevent regressions.
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Tested CPUAffinity settings on both a service unit and in system.conf
and confirmed they work as expected.
Added a new test to confirm that trailing commas and spaces work and to
prevent any regressions in that area.
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