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faccessat returns 0 on success.
A cosmetic fix is also included: the slash was doubled unnecessarily.
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Also downgrade non-fatal warnings to log_warning.
Previously rule_add_key() would check the output array and log a cryptic
error and return -1. Most of the time the return value was ignored. This
does not seems right, because the buffer can overflow with enough rules.
It would also check if we have enough space for the *next* rule, even if
there might be not next rule, i.e. off-by-one.
Replace this with a check that we have enough space for a next rule before
we start parsing.
Normally using macros to alter flow is not allowed, but in this case I
think it is worth it, because it allows lots of boilerplate code to be
removed and hides repeated boring parameters, making function logic much
easier to follow.
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If the attribute wasn't found, the last filename looked at was returned in
the input/output argument. This just seems bad style.
The return value was ignored, so change function to return void.
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CID #1313566.
Also, change the return value to void, because it is ignored anyway.
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This should be handled fine now by .dir-locals.el, so need to carry that
stuff in every file.
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Otherwise emacs wants to use 2-space indentation and other
attrocities.
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There are more than enough to deserve their own .c file, hence move them
over.
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string-util.[ch]
There are more than enough calls doing string manipulations to deserve
its own files, hence do something about it.
This patch also sorts the #include blocks of all files that needed to be
updated, according to the sorting suggestions from CODING_STYLE. Since
pretty much every file needs our string manipulation functions this
effectively means that most files have sorted #include blocks now.
Also touches a few unrelated include files.
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This really deserves its own file, given how much code this is now.
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Enhance matching of TAG keys
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Use %m where previously %s was used together with strerrno().
Fixes: e53fc357a9b "tree-wide: remove a number of invocations of
strerror() and replace by %m"
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The TAG key can be used in rules for event matching. At the moment, it
does not support inequality tests. This patch enhances the key test to
validate the rule if it does not contain a given TAG (by TAG!="value").
Signed-off-by: Felipe Franciosi <felipe@paradoxo.org>
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Let's clean up our tree a bit, and reduce invocations of the
thread-unsafe strerror() by replacing it with printf()'s %m specifier.
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Let's also clean up single-line while and for blocks.
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Patch via coccinelle.
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This replaces this:
free(p);
p = NULL;
by this:
p = mfree(p);
Change generated using coccinelle. Semantic patch is added to the
sources.
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Pretty trivial helper which wraps free() but returns NULL, so we can
simplify this:
free(foobar);
foobar = NULL;
to this:
foobar = mfree(foobar);
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Use free_and_strdup() where appropriate and replace equivalent,
open-coded versions.
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udev: event - simplify udev_event_spawn() logic
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This facility was never a proper solution, but only papered over
real bugs in the kernel. There are no known sysfs "timing bugs"
since a long time.
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Push the extraction of the envp + argv as close as possible to their use, to avoid code
duplication. As a sideeffect fix logging when delaing execution.
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PROGRAM and IMPORT{program} uses the exit code of the spawn process to decide if a rule matches or not,
a failing process is hence normal operation and not something we should warn about.
We still warn about other types of failing processes.
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We used to block all signals, and restore the original signal mask before exec'ing
external processes.
Now we just block the signals we care about and unconditionally unblock all signals
before exec'ing.
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Mostly for documentation purposes.
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This should have been committed with
udev_device_add_property - implicitly mark properties for saving to db
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Properties should only be saved to the db when added to the udev_device by udevd, and only if
the property does not start with a '.'. Make this implicit rather than expose the marking of
properties.
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Also accept '\r' as newline character.
This dropps warnings of the type:
invalid key/value pair in file /usr/lib/udev/rules.d/40-usb-media-players.rules
on line 26, starting at character 25 ('')
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The current code would print the character following the first invalid
character.
Given an udev rules-file without a trailing newline we would otherwise print
garbage:
invalid key/value pair in file /usr/lib/udev/rules.d/40-usb-media-players.rules
on line 26, starting at character 25 ('m')
This is now changed to print
invalid key/value pair in file /usr/lib/udev/rules.d/40-usb-media-players.rules
on line 26, starting at character 25 ('')
(still not very good as printing \0 just gives the empty string)
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Using the same scripts as in f647962d64e "treewide: yet more log_*_errno
+ return simplifications".
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If the format string contains %m, clearly errno must have a meaningful
value, so we might as well use log_*_errno to have ERRNO= logged.
Using:
find . -name '*.[ch]' | xargs sed -r -i -e \
's/log_(debug|info|notice|warning|error|emergency)\((".*%m.*")/log_\1_errno(errno, \2/'
Plus some whitespace, linewrap, and indent adjustments.
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Using:
find . -name '*.[ch]' | while read f; do perl -i.mmm -e \
'local $/;
local $_=<>;
s/(if\s*\([^\n]+\))\s*{\n(\s*)(log_[a-z_]*_errno\(\s*([->a-zA-Z_]+)\s*,[^;]+);\s*return\s+\g4;\s+}/\1\n\2return \3;/msg;
print;'
$f
done
And a couple of manual whitespace fixups.
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It corrrectly handles both positive and negative errno values.
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As a followup to 086891e5c1 "log: add an "error" parameter to all
low-level logging calls and intrdouce log_error_errno() as log calls
that take error numbers", use sed to convert the simple cases to use
the new macros:
find . -name '*.[ch]' | xargs sed -r -i -e \
's/log_(debug|info|notice|warning|error|emergency)\("(.*)%s"(.*), strerror\(-([a-zA-Z_]+)\)\);/log_\1_errno(-\4, "\2%m"\3);/'
Multi-line log_*() invocations are not covered.
And we also should add log_unit_*_errno().
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If the file is found to be empty, we exit early without closing the file first.
Found by coverity. Fixes CID #1237759.
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