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The function `strv_join_quoted()` is now not used, and has a bug
in the buffer size calculation when the strings needs to escaped,
as reported in #8056.
So, let's remove the function.
Closes#8056.
On Debian/Ubuntu systems the default passwd/group files use a
slightly strange mapping. E.g. in passwd:
```
man❌6:12::/var/cache/man:/sbin/nologin
```
and in group:
```
disk❌6:
man❌12:
```
This is not supported in systemd-sysusers right now because
sysusers will not re-use an existing uid/gid in its normal
mode of operation. Unfortunately this reuse is needed to
replicate the default Debian/Ubuntu users/groups.
This commit enforces reuse when the "uid:gid" syntax is used
to fix this.
I also added a test that replicates the Debian base-passwd
passwd/group file to ensure things are ok.
Technically, `data` is a sequence of bytes without a trailing zero,
so the use of `memcmp` seems to be logical here. Besides, this helps get
around a bug that makes `asan` report the false positive mentioned in
#8052.
Closes#8052.
Red is used for highligting, the same as grep does. Except when the line is
highlighted red already, because it has high priority, in which case plain ansi
highlight is used for the matched substring.
Coloring is implemented for short and cat outputs, and not for other types.
I guess we could also add it for verbose output in the future.
Case sensitive or case insensitive matching can be requested using
--case-sensitive[=yes|no].
Unless specified, matching is case sensitive if the pattern contains any
uppercase letters, and case insensitive otherwise. This matches what
forward-search does in emacs, and recently also --ignore-case in less. This
works surprisingly well, because usually when one is wants to do case-sensitive
matching, the pattern is usually camel-cased. In the less frequent case when
case-sensitive matching is required with an all-lowercase pattern,
--case-sensitive can be used to override the automatic logic.
Now we have log_set_prohibit_ipc(), let's use it to clarify that
systemd-shutdown is not expected to try and log via journald (which it is
about to kill). We avoided ever asking systemd-shutdown to do this, but
it's more convenient for the reader if they don't have to think about that.
In that sense, it's similar to using assert() to validate a function's
arguments.
log_open_console() did not switch from stderr to /dev/console, when
"always_reopen_console" was set. It was necessary to call
log_close_console() first.
By contrast, log_open() did switch between e.g. journald and kmsg according
to the value of "prohibit_ipc".
Let's fix log_open() to respect the values of all the log options, and we
can make log_close_*() private.
Also log_close_console() is changed. There was some precaution, avoiding
closing the console fd if we are not PID 1. I think commit 48a601fe made
a little mistake in leaving this in, and it only served to confuse
readers :).
Also I changed systemd-shutdown. Now we have log_set_prohibit_ipc(), let's
use it to clarify that systemd-shutdown is not expected to try and log via
journald (which it is about to kill). We avoided ever asking it to, but
it's more convenient for the reader if they don't have to think about that.
In that sense, it's similar to using assert() to validate a function's
arguments.
Previously, we'd refuse open journal files with suffixes that aren't
either .journal or .journal~. With this change we only care when we are
creating the journal file.
I looked over the sources to see whether we ever pass files discovered
by directory enumeration to journal_file_open() without first checking
the suffix (in which case the old check made sense), but I couldn't find
any. hence I am pretty sure removing this check is safe.
Fixes: #7972
I used 'tags' before because this way we avoided a unnecessary
line about 'env' detection. But we cannot use 'env' in test(), so
previous commit added 'env' detection. We might just as well use
it in custom_target().
This is a bit painful because a separate build of systemd is necessary. The
tests are guarded by tests!=false and slow-tests==true. Running them is not
slow, but compilation certainly is. If this proves unwieldy, we can add a
separate option controlling those builds later.
The build for each sanitizer has its own directory, and we build all fuzzer
tests there, and then pull them out one-by-one by linking into the target
position as necessary. It would be nicer to just build the desired fuzzer, but
we need to build the whole nested build as one unit.
[I also tried making systemd and nested meson subproject. This would work
nicely, but meson does not allow that because the nested target names are the
same as the outer project names. If that is ever fixed, that would be the way
to go.]
v2:
- make sure things still work if memory sanitizer is not available
v3:
- switch to syntax which works with meson 0.42.1 found in Ubuntu
If we have to force the logging to close the journal fd, then we can open
any fallback log target. E.g. kmsg, if the target was the default
JOURNAL_OR_KMSG.
This is the behaviour I would expect from the documentation. I couldn't
find any justification in the code, for why we would want to start dropping
log messages instead of sending them to the fallback target.
This means we will match the behaviour of processes which we fork and which
set `open_when_needed`, and with generators - which use
log_set_prohibit_ipc(true) - which we fork+exec during a reload.
IMO this illustrates that the log_open/log_close interface is too clunky.
So with the behaviour settled, I will refactor the interface in the next
commit :).
It turns out that link local doesn't make much sense in its context.
Since link local is disabled by the kernel driver, it's important that
networkd assumes it's off too, so that the link can reach the
"configured" stage, without waiting indefinitely for link local
addresses which will never come.
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
