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By using __extension__, we can silence pedantic errors we cannot or
do not want to fix.
This in particular silences:
- enum values being outside of int range
- variadic macros
- long long being C99
- type of bit-field ‘type’ is a GCC extension
- use of C99 bool in public header functions
Some compiler wrappers like honggfuzz pass -fno-builtin explicitly
and because of that the tests where fabs is used fail to compile
with something like
```
FAILED: test-bus-marshal
...
/usr/bin/ld: test-bus-marshal.p/src_libsystemd_sd-bus_test-bus-marshal.c.o: undefined reference to symbol 'fabs@@GLIBC_2.2.5'
/usr/bin/ld: /usr/lib64/libm.so.6: error adding symbols: DSO missing from command line
collect2: error: ld returned 1 exit status
```
Fun fact: it took honggfuzz less than a minute to discover
https://github.com/advisories/GHSA-gmc7-pqv9-966m used by
systemd to compress/descompress some stuff.
Currently, the systemd-hwdb --root flag only has an effect for the
'update' verb. It would be useful to be able to use the --root option
for the 'query' verb too (e.g. for testing a hwdb.bin created with
systemd-hwdb update --root <path>).
Use sd_hwdb_new_from_path to initialize the hwdb if --root is passed to
systemd-hwdb query.
Note that this functionality was not added to 'udevadm hwdb' since that
command is deprecated.
The existing sd_hwdb_new function always initializes the hwdb from the
first successful hwdb.bin it finds from hwdb_bin_paths. This means there
is currently no way to initialize a hwdb from an explicit path, which
would be useful for systemd-hwdb query.
Add sd_hwdb_new_from_path to allow a sd_hwdb to be initialized from a
custom path outside of hwdb_bin_paths.
Include this header to fix errors when including hwdb-internal.h:
../src/libsystemd/sd-hwdb/hwdb-internal.h:16:21: error: field ‘st’ has incomplete type
16 | struct stat st;
as it may take a bit longer on slower machines:
```
[ OK ] Reached target System Reboot.
Found cgroup2 on /sys/fs/cgroup/, full unified hierarchy
Failed to open watchdog device /dev/watchdog0, ignoring: No such file or directory
binfmt_misc is not mounted, not detaching entries.
Sending SIGTERM to remaining processes...
ERROR:test-shutdown:Timeout exceeded.
<pexpect.pty_spawn.spawn object at 0x7f3d4bcd20b0>
command: /systemd-meson-build/systemd-nspawn
<...snip...>
buffer (last 100 chars): 'mbinfmt_misc is not mounted, not detaching entries.\x1b[0m\r\nSending SIGTERM to remaining processes...\r\n'
before (last 100 chars): 'mbinfmt_misc is not mounted, not detaching entries.\x1b[0m\r\nSending SIGTERM to remaining processes...\r\n'
after: <class 'pexpect.exceptions.TIMEOUT'>
match: None
match_index: None
exitstatus: None
flag_eof: False
pid: 572528
child_fd: 5
closed: False
timeout: 30
delimiter: <class 'pexpect.exceptions.EOF'>
logfile: <_io.TextIOWrapper name='<stdout>' mode='w' encoding='utf-8'>
logfile_read: None
logfile_send: None
maxread: 2000
ignorecase: False
searchwindowsize: None
delaybeforesend: 0.05
delayafterclose: 0.1
delayafterterminate: 0.1
searcher: searcher_re:
0: re.compile('H login: ')
INFO:test-shutdown:killing child pid 572528
E: nspawn failed with exit code 1
```
If something doesn't match, let's print the non-matching value.
If we can't query something, say what.
And make the messages in the udev and blkid paths different, so
we tell which approach failed from a log.
Since the first version in 81516adcb7,
kernel-install would "gather" a return value by summing the exit codes
of the plugins… This makes no sense, because those are not additive values.
Let's just break off immediately. We now implement cleanup via trap, so if we
break, we should leave no garbage behind.
The text used was originally written for everything being on the ESP. It was
later generalized for support XBOOTLDR, and "$BOOT" was introduced to mean
something like "XBOOTLDR if present, the ESP otherwise", and most of the text
was changed to talk about $BOOT. Sadly, this doesn't work, because the two
partitions are not interchangeable. sd-boot loads entries from both partitions,
and its configuration, random-seed, etc. only from the ESP.
The terms are redefined: $BOOT now means either the ESP or the "boot partition"
playing the same role on MBR systems, and $XBOOTLDR is XBOOTLDR.
Like various previous commits, this makes the specification describe our
current implementation.
Also, the let's just accept the common practice of using /boot and /boot/efi.
Since both partitions need to be read to gather configuration, it isn't a
problem that one is mounted underneath the other one. I think having /boot and
/efi is OK, but not better in any measureable way, so let's stop trying to push
people towards this setup.
A note that XBOOTLDR must be on the same disk as ESP is added.
On switching root, a device may have a persistent databse. In that case,
Device.enumerated_found may have DEVICE_FOUND_UDEV flag, and it is not
necessary to downgrade the Device.deserialized_found and
Device.deserialized_state. Otherwise, the state of the device unit may
be changed plugged -> dead -> plugged, if the device has not been mounted.
Fixes#23429.
[mwilck: cherry-picked from #23437]
dm-crypt device units generated by systemd-cryptsetup-generator
habe BindsTo= dependencies on their backend devices. The dm-crypt
devices have the db_persist flag set, and thus survive the udev db
cleanup while switching root. But backend devices usually don't survive.
These devices are neither mounted nor used for swap, thus they will
seen as DEVICE_NOT_FOUND after switching root.
The BindsTo dependency will cause systemd to schedule a stop
job for the dm-crypt device, breaking boot:
[ 68.929457] krypton systemd[1]: systemd-cryptsetup@cr_root.service: Unit is stopped because bound to inactive unit dev-disk-by\x2duuid-3bf91f73\x2d1ee8\x2d4cfc\x2d9048\x2d93ba349b786d.device.
[ 68.945660] krypton systemd[1]: systemd-cryptsetup@cr_root.service: Trying to enqueue job systemd-cryptsetup@cr_root.service/stop/replace
[ 69.473459] krypton systemd[1]: systemd-cryptsetup@cr_root.service: Installed new job systemd-cryptsetup@cr_root.service/stop as 343
Avoid this by not setting the state of the backend devices to
DEVICE_DEAD.
Fixes the LUKS setup issue reported in #23429.
