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Also, don't panic when both optional arguments are empty. This should
make the syntax compatible-ish with the dracut one from dracut.cmdline(7).
Resolves: #29855
Previously, OBJECT_UNUSED was used for 'pinning' the mmap cache for an
object. But, OBJECT_UNUSED is also used for reading object when type
cannot be determined before read, e.g. when reading the tail object.
Let's introduce another category for pinning mmap cache, and use it when
we want to temporary pin an object.
- Rename generic_array_bisect_one() -> generic_array_bisect_step(), as there
is also generic_array_bisect_plus_one(), so the original name is confusing.
- Make generic_array_bisect_step() return TEST_GOTO_NEXT or TEST_GOTO_PREVIOUS
when the current array does not contain any matching entries.
- Make generic_array_bisect_step() symmetric with respect to the direction
we are going to, except for the journal corruption handling.
- Make generic_array_bisect_step() gracefully handle journal corruptions,
so the corruption handling in the caller side can be mostly dropped.
- Especially, when the last entry in an array is corrupted, previously
we tried to find a valid entry sequentially from the end of the array,
but now we anyway bisect the array. That should improve performance of
reading corrupted journal files.
- Return earlier when no entry linked to the chained array (n == 0).
- Add many comments.
No behavior change unless journal is corrupted.
This effectively reverts e562f131585fe6ae32b1f035ba48c1548d695259.
In the loop of the generic_array_bisect(), the offset of the entry array
object is unchanged, the object is read at the beginning of the loop, and
we do not read any other entry array object. Hence, it is not necessary to
re-read the object every time we use the object.
Let's put this back in, as it could help with occasional machine lock ups
on overloaded systems (and it didn't help with the original issue
anyway).
This reverts commit 3a89904e45cbbd96fb1c5d0768de5e5fcdaaa508.
JSON-I (RFC 7493) suggests to use the URL safe base64 alphabet, rather
than the regular one when encoding binary data in JSON strings. We
generally uses the regular alphabet though.
Let's be tolerant in what we parse however: simply accept both formats
when we parse base64.
This does nothing about base64 generation though, only about parsing.
The pkcs11 uri is no set if the smart card is not inserted while using
`pkcs11-uri=auto` with libcryptsetup plugins.
```
> systemd-cryptsetup attach cr_data /dev/sda1 - pkcs11-uri=auto
Set cipher aes, mode xts-plain64, key size 512 bits for device /dev/sda1.
Security token (null) not present for unlocking volume Linux filesystem (cr_data), please plug it in.
```
All the following commands would just fail with -ENOANO anyway, hence
there's no point in sending them. And it allows us to shave off some
error handling code.
This is mostly just refactoring to make the code more manageable and
extendable. It doesn't introduce any semantic changes, but it
"optimizes" the communication with udevd a bit:
* If an option is used multiple times, only one command will be sent. If
the option takes a value, the value of the final appearance of the
option is used. The only exception is --property, which is additive by
nature.
* Options --start-exec-queue and --stop-exec-queue are handled together.
Only one of START_QUEUE/STOP_QUEUE commands will be sent to udevd even
if both options appear on the command line.
Before confext was added, hierarchies always existed in extensions. Now
they are optional - i.e., a sysext will not contain /etc/. So mixing a
confext and a sysext fails, as we'll try to create an overlay with /etc/
from the base, the confext and the sysext, but the latter doesn't have
the directory.
After the source images are mounted, check that each hierarchy exists in
each source image before creating the overlay, and drop them if they
don't.
Follow-up for 55ea4ef096543
Let's install a simple no-op signal handler without SA_RESTART for
SIGINT/SIGTERM, which allows us to interrupt read_one_char() and follow
it up with a proper cleanup, including restoring the vt to the original
state.
Resolves: #29478
Introduce a new env variable $SYSTEMD_NSPAWN_CHECK_OS_RELEASE, that can
be used to disable the os-release check for bootable OS trees. Useful
when trying to boot a container with empty /etc/ and bind-mounted /usr/.
Resolves: #29185
