| Commit message (Collapse) | Author | Age | Files | Lines |
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Otherwise the default log target is the console and we won't use
the journal socket even if it is available.
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Same as $KERNEL_INSTALL_BYPASS, but for hwdb. This will speed up
cross architecture image builds in mkosi as I can disable package
managers from running the costly hwdb update stuff in qemu user
mode and run it myself with a native systemd-hwdb with --root=.
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By default, label_ops is initialized with a NULL pointer which translates
to noop labelling operations. In mac_selinux_init() and the new mac_smack_init(),
we initialize label_ops with a MAC specific LabelOps pointer.
We also introduce mac_init() to initialize any configured MACs and replace all
usages of mac_selinux_init() with mac_init().
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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.
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Fixes #22976.
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In general we almost never hit those asserts in production code, so users see
them very rarely, if ever. But either way, we just need something that users
can pass to the developers.
We have quite a few of those asserts, and some have fairly nice messages, but
many are like "WTF?" or "???" or "unexpected something". The error that is
printed includes the file location, and function name. In almost all functions
there's at most one assert, so the function name alone is enough to identify
the failure for a developer. So we don't get much extra from the message, and
we might just as well drop them.
Dropping them makes our code a tiny bit smaller, and most importantly, improves
development experience by making it easy to insert such an assert in the code
without thinking how to phrase the argument.
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I think this formatting was originally used because it simplified
adding new options to the help messages. However, these days, most
tools their help message end with "\nSee the %s for details.\n" so
the final line almost never has to be edited which eliminates the
benefit of the custom formatting used for printf() help messages.
Let's make things more consistent and use the same formatting for
printf() help messages that we use everywhere else.
Prompted by https://github.com/systemd/systemd/pull/18355#discussion_r567241580
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This cleans up and unifies the outut of --help texts a bit:
1. Highlight the human friendly description string, not the command
line via ANSI sequences. Previously both this description string and
the brief command line summary was marked with the same ANSI
highlight sequence, but given we auto-page to less and less does not
honour multi-line highlights only the command line summary was
affectively highlighted. Rationale: for highlighting the description
instead of the command line: the command line summary is relatively
boring, and mostly the same for out tools, the description on the
other hand is pregnant, important and captions the whole thing and
hence deserves highlighting.
2. Always suffix "Options" with ":" in the help text
3. Rename "Flags" → "Options" in one case
4. Move commands to the top in a few cases
5. add coloring to many more help pages
6. Unify on COMMAND instead of {COMMAND} in the command line summary.
Some tools did it one way, others the other way. I am not sure what
precisely {} is supposed to mean, that uppercasing doesn't, hence
let's simplify and stick to the {}-less syntax
And minor other tweaks.
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This is high-level functionality, and fits better in shared/ (which is for
our executables), than in basic/ (which is also for libraries).
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This way, we can extend the macro a bit with stuff pulled in from other
headers without this affecting everything which pulls in macro.h, which
is one of our most basic headers.
This is just refactoring, no change in behaviour, in prepartion for
later changes.
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Both 'systemd-hwdb update' and 'udevadm hwdb --update' creates hwdb
database. The database created by systemd-hwdb containes additional
information such that priority, line number, and source filename.
The unified function 'hwdb_update()' can take a flag 'compat' which
controls the format version of created database.
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This is a bit like the info link in most of GNU's --help texts, but we
don't do info but man pages, and we make them properly clickable on
terminal supporting that, because awesome.
I think it's generally advisable to link up our (brief) --help texts and
our (more comprehensive) man pages a bit, so this should be an easy and
straight-forward way to do it.
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Fixes #9320.
for p in Shapovalov Chevalier Rozhkov Sievers Mack Herrmann Schmidt Rudenberg Sahani Landden Andersen Watanabe; do
git grep -e 'Copyright.*'$p -l|xargs perl -i -0pe 's|/([*][*])?[*]\s+([*#]\s+)?Copyright[^\n]*'$p'[^\n]*\s*[*]([*][*])?/\n*|\n|gms; s|\s+([*#]\s+)?Copyright[^\n]*'$p'[^\n]*\n*|\n|gms'
done
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Let's unify an beautify our remaining copyright statements, with a
unicode ©. This means our copyright statements are now always formatted
the same way. Yay.
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This part of the copyright blurb stems from the GPL use recommendations:
https://www.gnu.org/licenses/gpl-howto.en.html
The concept appears to originate in times where version control was per
file, instead of per tree, and was a way to glue the files together.
Ultimately, we nowadays don't live in that world anymore, and this
information is entirely useless anyway, as people are very welcome to
copy these files into any projects they like, and they shouldn't have to
change bits that are part of our copyright header for that.
hence, let's just get rid of this old cruft, and shorten our codebase a
bit.
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- Add a new flag --strict to tell systemd-hwdb to return a
non-zero code on error.
- Make systemd-hwdb update return an error when any parsing
error occurs (only if strict flag is set).
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Files which are installed as-is (any .service and other unit files, .conf
files, .policy files, etc), are left as is. My assumption is that SPDX
identifiers are not yet that well known, so it's better to retain the
extended header to avoid any doubt.
I also kept any copyright lines. We can probably remove them, but it'd nice to
obtain explicit acks from all involved authors before doing that.
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oss-fuzz adjustments and other cleanups
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Should fix #8557.
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This reworks the SELinux and SMACK label fixing calls in a number of
ways:
1. The two separate boolean arguments of these functions are converted
into a flags type LabelFixFlags.
2. The operations are now implemented based on O_PATH. This should
resolve TTOCTTOU races between determining the label for the file
system object and applying it, as it it allows to pin the object
while we are operating on it.
3. When changing a label fails we'll query the label previously set, and
if matches what we want to set anyway we'll suppress the error.
Also, all calls to label_fix() are now (void)ified, when we ignore the
return values.
Fixes: #8566
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Let's systematically make use of reallocarray() whereever we invoke
realloc() with a product of two values.
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This follows what the kernel is doing, c.f.
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=5fd54ace4721fc5ce2bb5aef6318fcf17f421460.
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Fixes: #6787
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For files which are vital to boot
1. Avoid opening any window where power loss will zero them out or worse.
I know app developers all coded to the ext3 implementation, but
the only formal documentation we have says we're broken if we actually
rely on it. E.g.
* `man mount`, search for `auto_da_alloc`.
* http://www.linux-mtd.infradead.org/faq/ubifs.html#L_atomic_change
* https://thunk.org/tytso/blog/2009/03/15/dont-fear-the-fsync/
2. If we tell the kernel we're interested in writing them to disk, it will
tell us if that fails. So at minimum, this means we play our part in
notifying the user about errors.
I refactored error-handling in `udevadm-hwdb` a little. It turns out I did
exactly the same as had already been done in the `systemd-hwdb` version,
i.e. commit d702dcd.
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v2:
- also mention m4
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This avoids having double slashes which can confuse selinux.
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We defined both $(VERSION) and $(PACKAGE_VERSION) with the same contents.
$(PACKAGE_VERSION) is slightly more descriptive, so settle on that, and
drop the other define.
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This is also an error, but it wasn't caught.
[/tmp/tmp.YWeKax4fMI/etc/udev/hwdb.d/10-bad.hwdb:26] Property expected, ignoring record with no properties
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The code was trying to detect an empty key, but property lines always
start with a space, so the condition was wrong.
Now:
[/tmp/tmp.YWeKax4fMI/etc/udev/hwdb.d/10-bad.hwdb:14] Empty key in " =NO_NAME", ignoring
[/tmp/tmp.YWeKax4fMI/etc/udev/hwdb.d/10-bad.hwdb:15] Empty value in " NO_VALUE=", ignoring
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Since syntax error are non-fatal, downgrade them to warnings.
Use log_syntax to have uniform formatting including the line number.
State machine states like DATA and MATCH are internal, user-facing
messages should use the names from hwdb(7): match, property, record.
Also change "key/value" to "key-value", since there's no alternative
here, both parts must be present.
[/tmp/tmp.KFwEhm74n4/etc/udev/hwdb.d/10-bad.hwdb:2] Property expected, ignoring record with no properties
[/tmp/tmp.KFwEhm74n4/etc/udev/hwdb.d/10-bad.hwdb:5] Property expected, ignoring record with no properties
[/tmp/tmp.KFwEhm74n4/etc/udev/hwdb.d/10-bad.hwdb:9] Property expected, ignoring record with no properties
[/tmp/tmp.KFwEhm74n4/etc/udev/hwdb.d/10-bad.hwdb:11] Key/value pair expected but got " NO_VALUE", ignoring
[/tmp/tmp.KFwEhm74n4/etc/udev/hwdb.d/10-bad.hwdb:18] Property or empty line expected, got "BAD:7:match at wrong place", ignoring record
[/tmp/tmp.KFwEhm74n4/etc/udev/hwdb.d/10-bad.hwdb:22] Property or empty line expected, got "BAD:8:match at wrong place", ignoring record
[/tmp/tmp.KFwEhm74n4/etc/udev/hwdb.d/10-bad.hwdb:23] Match expected but got indented property " Z=z", ignoring line
squash! hwdb: improve syntax error messages
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fclose() can also set errno, so the attempts to protect errno that the
code made were not successful. Simplify things by immediately saving
errno to r.
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We cannot compare filenames directly, because paths are not sortable
lexicographically, e.g. /etc/udev is "later" (has higher priority)
than /usr/lib/udev.
The on-disk format is changed to have a separate field for "file priority",
which is stored when writing the binary file, and then loaded and used in
comparisons. For data in the previous format (as generated by systemd 232),
this information is not available, and we use a trick where the offset into the
string table is used as a proxy for priority. Most of the time strings are
stored in the order in which the files were processed. This is not entirely
reliable, but is good enough to properly order /usr/lib and /etc/, which are
the two most common cases. This hack is included because it allows proper
parsing of files until the binary hwdb is regenerated.
Instead of adding a new field, I reduced the size of line_number from 64 to 32
bits, and added a 16 bit priority field, and 16 bits of padding. Adding a new
field of 16 bytes would significantly screw up alignment and increase file
size, and line number realistically don't need more than ~20 bits.
Fixes #4750.
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Partial fix for #4750.
We would compare strings like "/usr/lib/udev/hwdb.d/something.hwdb" and
"/etc/udev/hwdb.db/something.hwdb" and conclude that the first has higher
priority. Since we process files in order (higher priority later), no
comparison is necessary when loading.
This partially undoes 3a04b789c6f17dff2000a3cdbeaaf86baa604524
(not in spirit, but in the implementation).
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Tree wide cleanups
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