This way cleaning up the cgroup tree on shutdown is a lot easier since
we are in the root dir. Also PID 1 was previously artificially placed in
system.slice, even though our rule actually was not to have processes in
slices. The root slice otoh is magic anyway, so having PID 1 in there
sounds less surprising.
Of course, this means that PID is scheduled against the three top-level
slices.
$ touch src/core/dbus.c; make CFLAGS=-O0
make --no-print-directory all-recursive
Making all in .
CC src/core/libsystemd_core_la-dbus.lo
CCLD libsystemd-core.la
$ touch src/core/dbus.c; make CFLAGS=-Og
make --no-print-directory all-recursive
Making all in .
CC src/core/libsystemd_core_la-dbus.lo
src/core/dbus.c: In function 'init_registered_system_bus':
src/core/dbus.c:798:18: warning: 'id' may be used uninitialized in this function [-Wmaybe-uninitialized]
dbus_free(id);
^
CCLD libsystemd-core.la
-Og Optimize debugging experience. -Og enables optimizations that do
not interfere with debugging. It should be the optimization level of
choice for the standard edit-compile-debug cycle, offering a
reasonable level of optimization while maintaining fast compilation
and a good debugging experience.
We now treat passno as boleans in the generators, and don't need this any more. fsck itself
is able to sequentialize checks on the same local media, so in the common case the ordering
is redundant.
It is still possible to force an order by using .d fragments, in case that is desired.
The code was actually safe, because b should
never be null, because if rvalue is empty, a different
branch is taken. But we *do* check for NULL in the
loop above, so it's better to also check here for symmetry.
If the function failed, nothing serious would happen
because unlink would probably return EFAULT, but this
would obscure the real error and is a bit sloppy.
This extends 62678ded 'efi: never call qsort on potentially
NULL arrays' to all other places where qsort is used and it
is not obvious that the count is non-zero.
Since on most systems with xattr systemd will compile with Smack
support enabled, we still attempt to mount various fs's with
Smack-only options.
Before mounting any of these Smack-related filesystems with
Smack specific mount options, check if Smack is functionally
active on the running kernel.
If Smack is really enabled in the kernel, all these Smack mounts
are now *fatal*, as they should be.
We no longer mount smackfs if systemd was compiled without
Smack support. This makes it easier to make smackfs mount
failures a critical error when Smack is enabled.
We no longer mount these filesystems with their Smack specific
options inside containers. There these filesystems will be
mounted with there non-mount smack options for now.
The Service type's forbid_restart field was not preserved by
serialization/deserialization, so the fact that the service should not
be restarted after stopping was lost.
If a systemctl stop foo command has been given, but the foo service
has not yet stopped, and then the systemctl --system daemon-reload was
given, then when the foo service eventually stopped, systemd would
restart it.
https://bugs.freedesktop.org/show_bug.cgi?id=69800
Allows the systemd --system process to change its current
SMACK label to a predefined custom label (usually "system")
at boot time.
This is needed to have a few system-generated folders and
sockets automatically be created with the right SMACK
label. Without that, processes either cannot communicate with
systemd or systemd fails to perform some actions.
Once systemd itself is running in a security domain for SMACK,
it will fail to start countless tasks due to missing privileges
for mounted and created directory structures. For /run and shm
specifically, we grant all tasks access.
These 2 mounts are allowed to fail, which will happen if the
system is not running a SMACK enabled kernel or security=none is
passed to the kernel.
For cifs mount like //server/share, we would get
RequiresMountsFor=/server/share, which probably isn't
harmful, but quite confusing.
Unfortunately a bunch of static functions had to be moved
up, but patch is really one line.
Usually the network is stopped before filesystems are umounted.
Ordering network filesystems before remote-fs.target means that their
unmounting will be performed earlier, and can terminate sucessfully.
https://bugs.freedesktop.org/show_bug.cgi?id=70002
The correct path to the dir with CIPSO mappings is /etc/smack/cipso.d/;
/etc/smack/cipso is a file that can include these mappings as well,
though it is no longer supported in upstream libsmack.
Also, we need to use proper strv_env_xyz() calls when putting together
the environment array, since otherwise settings won't be properly
overriden.
And let's get rid of strv_appendf(), is overkill and there was only one
user.
Previously to automatically create dependencies between mount units we
matched every mount unit agains all others resulting in O(n^2)
complexity. On setups with large amounts of mount units this might make
things slow.
This change replaces the matching code to use a hashtable that is keyed
by a path prefix, and points to a set of units that require that path to
be around. When a new mount unit is installed it is hence sufficient to
simply look up this set of units via its own file system paths to know
which units to order after itself.
This patch also changes all unit types to only create automatic mount
dependencies via the RequiresMountsFor= logic, and this is exposed to
the outside to make things more transparent.
With this change we still have some O(n) complexities in place when
handling mounts, but that's currently unavoidable due to kernel APIs,
and still substantially better than O(n^2) as before.
https://bugs.freedesktop.org/show_bug.cgi?id=69740
Previously we did operations like attach, trim or migrate only on the
controllers that were enabled for a specific unit. With this changes we
will now do them for all supproted controllers, and fall back to all
possible prefix paths if the specified paths do not exist.
This fixes issues if a controller is being disabled for a unit where it
was previously enabled, and makes sure that all processes stay as "far
down" the tree as groups exist.
Prefer firmware-provided performance data over loader-exported ones; if
ACPI data is available, always use it, otherwise try to read the loader
data.
The firmware-provided variables start at the time the first EFI image
is executed and end when the operating system exits the boot services;
the (loader) time calculated in systemd-analyze increases.
The non-hierarchial mode contradicts the whole idea of a cgroup tree so
let's not support this. In the future the kernel will only support the
hierarchial logic anyway.
The cgroup attribute memory.soft_limit_in_bytes is unlikely to stay
around in the kernel for good, so let's not expose it for now. We can
readd something like it later when the kernel guys decided on a final
API for this.
Lennart Poettering
Oleksii Shevchuk
Kay Sievers
Zbigniew Jędrzejewski-Szmek
Tom Gundersen
Mantas Mikulėnas
Auke Kok
Sylvia Else
Dave Reisner
Patrick McCarty
Mike Gilbert