Function queries system hostname and applies changes only when necessary. Also,
migrate all client of sethostname to sethostname_idempotent while at it.
Commit 74055aa762 'journalctl: add new --flush command and make use of
it in systemd-journal-flush.service' broke flushing because journald
checks for the /run/systemd/journal/flushed file before opening the
permanent journal. When the creation of this file was postponed,
flushing stoppage ensued.
We should use the data if we can (if stdin/stdout is an AF_UNIX socket),
but still work if we can't (if stdin/stdout are pipes, like in the SSH
case).
This effectively reverts 55534fb5e4
sd_bus_error_setfv() must initialize the sd_bus_error value to some
sensible value and then return a good errno code matching that. If it
cannot work at all it should set the error statically to the OOM error.
But if it can work half-way (i.e. initialize the name, but not the
message) it should do so and still return the correct errno number for
it.
This effectively reverts 8bf13eb1e0
In order to make object destruction easier (in particular in combination
with _cleanup_) we usually make destructors deal with NULL objects as
NOPs. Change the calendar spec destructor to follow the same scheme.
Fix a bug in systemd-cryptsetup-generator which caused the drop-in
setting the job timeout for the dm device unit to be written with a
name different than the unit name.
https://bugs.freedesktop.org/show_bug.cgi?id=84409
Since commit b1e90ec515 systemd passes
its log settings to systemd-shutdown via command line parameters.
However, systemd-shutdown doesn't pass these parameters to
/run/initramfs/shutdown, causing it to fall back to the default log
settings.
This fixes the following bugs about the shutdown not being quiet
despite "quiet" being in the kernel parameters:
https://bugs.freedesktop.org/show_bug.cgi?id=79582https://bugs.freedesktop.org/show_bug.cgi?id=57216
APIs that query and return something cannot silently fail, they must
either return something useful, or an error. Fix that.
Also, properly rollback socket unit fd creation when something goes
wrong with the security framework.
previously mac_smack_apply(path, NULL) would operate on the symlink
itself while mac_smack_apply(path, "foo") would follow the symlink.
Let's clean this up an always operate on the symlink, which appears to
be the safer option.
It cannot fail in the current hashmap implementation, but it may fail in
alternative implementations (unless a sufficiently large reservation has
been placed beforehand).
With the hashmap implementation that uses chaining the reservations
merely ensure that the merging won't result in long bucket chains.
With a future alternative implementation it will additionally reserve
memory to make sure the merging won't fail.
That hashmap_move_one() currently cannot fail with -ENOMEM is an
implementation detail, which is not possible to guarantee in general.
Hashmap implementations based on anything else than chaining of
individual entries may have to allocate.
hashmap_move_one will not fail with -ENOMEM if a proper reservation has
been made beforehand. Use reservations in install.c.
In cgtop.c simply propagate the error instead of asserting.
With the current hashmap implementation that uses chaining, placing a
reservation can serve two purposes:
- To optimize putting of entries if the number of entries to put is
known. The reservation allocates buckets, so later resizing can be
avoided.
- To avoid having very long bucket chains after using
hashmap_move(_one).
In an alternative hashmap implementation it will serve an additional
purpose:
- To guarantee a subsequent hashmap_move(_one) will not fail with
-ENOMEM (this never happens in the current implementation).
Tom Gundersen