Change the "out" parameter from uint8_t[8] to uint64_t. On architectures which
enforce pointer alignment this fixes crashes when we previously cast an
unaligned array to uint64_t*, and on others this should at least improve
performance as the compiler now aligns these properly.
This also simplifies the code in most cases by getting rid of typecasts. The
only place which we can't change is struct duid's en.id, as that is _packed_
and public API, so we can't enforce alignment of the "id" field and have to
use memcpy instead.
src/basic/virt.c: In function 'detect_vm_device_tree':
src/basic/virt.c:117:17: error: unknown type name '_cleanup_closedir_'
_cleanup_closedir_ DIR *dir = NULL;
src/basic/virt.c:128:17: error: implicit declaration of function 'FOREACH_DIRENT' [-Werror=implicit-function-declaration]
FOREACH_DIRENT(dent, dir, return -errno)
With this change, the idiom:
r = write_string_file(p, buf, 0);
if (r < 0) {
if (verify_one_line_file(p, buf) > 0)
r = 0;
}
gets reduced to:
r = write_string_file(p, buf, WRITE_STRING_FILE_VERIFY_ON_FAILURE);
i.e. when writing the string fails and the new flag
WRITE_STRING_FILE_VERIFY_ON_FAILURE is specified we'll not return a
failure immediately, but check the contents of the file. If it matches
what we wanted to write we suppress the error and exit cleanly.
As discussed at systemd.conf 2015 and on also raised on the ML:
http://lists.freedesktop.org/archives/systemd-devel/2015-November/034880.html
This removes the two XyzOverridable= unit dependencies, that were
basically never used, and do not enhance user experience in any way.
Most folks looking for the functionality this provides probably opt for
the "ignore-dependencies" job mode, and that's probably a good idea.
Hence, let's simplify systemd's dependency engine and remove these two
dependency types (and their inverses).
The unit file parser and the dbus property parser will now redirect
the settings/properties to result in an equivalent non-overridable
dependency. In the case of the unit file parser we generate a warning,
to inform the user.
The dbus properties for this unit type stay available on the unit
objects, but they are now hidden from usual introspection and will
always return the empty list when queried.
This should provide enough compatibility for the few unit files that
actually ever made use of this.
Some distributions use alias unit files via symlinks in /usr to cover
for legacy service names. With this change we'll allow "systemctl
enable" on such aliases.
Previously, our rule was that symlinks are user configuration that
"systemctl enable" + "systemctl disable" creates and removes, while unit
files is where the instructions to do so are store. As a result of the
rule we'd never read install information through symlinks, since that
would mix enablement state with installation instructions.
Now, the new rule is that only symlinks inside of /etc are
configuration. Unit files, and symlinks in /usr are now valid for
installation instructions.
This patch is quite a rework of the whole install logic, and makes the
following addional changes:
- Adds a complete test "test-instal-root" that tests the install logic
pretty comprehensively.
- Never uses canonicalize_file_name(), because that's incompatible with
operation relative to a specific root directory.
- unit_file_get_state() is reworked to return a proper error, and
returns the state in a call-by-ref parameter. This cleans up confusion
between the enum type and errno-like errors.
- The new logic puts a limit on how long to follow unit file symlinks:
it will do so only for 64 steps at max.
- The InstallContext object's fields are renamed to will_process and
has_processed (will_install and has_installed) since they are also
used for deinstallation and all kinds of other operations.
- The root directory is always verified before use.
- install.c is reordered to place the exported functions together.
- Stricter rules are followed when traversing symlinks: the unit suffix
must say identical, and it's not allowed to link between regular units
and templated units.
- Various modernizations
- The "invalid" unit file state has been renamed to "bad", in order to
avoid confusion between UNIT_FILE_INVALID and
_UNIT_FILE_STATE_INVALID. Given that the state should normally not be
seen and is not documented this should not be a problematic change.
The new name is now documented however.
Fixes#1375, #1718, #1706
Previously, we'd rely on the mtime timestamps of the touch files to see
if our sync/rotation requests were already suppressed. This means we
rely on CLOCK_REALTIME timestamps. With this patch we instead store the
CLOCK_MONOTONIC timestamp *in* the touch files, and avoid relying on
mtime.
This should make things more reliable when the clock or underlying mtime
granularity is not very good.
This also adds warning messages if writing any of the flag files fails.
3d793d2905 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.
This directive allows passing environment variables from the system
manager to spawned services. Variables in the system manager can be set
inside a container by passing `--set-env=...` options to systemd-spawn.
Tested with an on-disk test.service unit. Tested using multiple variable
names on a single line, with an empty setting to clear the current list
of variables, with non-existing variables.
Tested using `systemd-run -p PassEnvironment=VARNAME` to confirm it
works with transient units.
Confirmed that `systemctl show` will display the PassEnvironment
settings.
Checked that man pages are generated correctly.
No regressions in `make check`.
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.
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
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.
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
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
Martin Pitt
Daniel Mack
Tom Gundersen
Michal Schmidt
Lennart Poettering
Filipe Brandenburger
Zbigniew Jędrzejewski-Szmek
Daniel Mack
Iago López Galeiras
Jan Engelhardt
Andrew Jones
Susant Sahani
Evgeny Vereshchagin