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Let's follow symlinks before invoking mount() on arbitrary paths, so that we
won't get confused if directories are prepared with absolute symlinks.
Use FOREACH_STRING() instead of NULSTR_FOREACH() as it is more readable.
Don't use snprintf() for concatenating strings, let chase_symlinks() to that.
Replace homegrown mount check with path_is_mount_point(). Also, change the
behaviour when we encounter this: instead of unmounting the old mount point,
simply leave it around and don't replace it, so that initrds can mount stuff
there with different settings than we would apply. This is in-line with how we
handle automatic mounts in nspawn for example.
Use umount_recursive() instead of a simple umount2() for unmounting the old
root, so that we actually cover really all mounts, not just the top-level one.
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If we encounter the (unlikely) situation where the combined path to the
new root and a path to a mount to be moved together exceed maximum path length,
we shouldn't crash, but fail this path instead.
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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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Also add a coccinelle receipt to help with such transitions.
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The next step of a general cleanup of our includes. This one mostly
adds missing includes but there are a few removals as well.
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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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- Move to its own file rm-rf.c
- Change parameters into a single flags parameter
- Remove "honour sticky" logic, it's unused these days
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After all it is now much more like strjoin() than strappend(). At the
same time, add support for NULL sentinels, even if they are normally not
necessary.
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If we scale our buffer to be wide enough for the format string, we
should expect that the calculation was correct.
char_array_0() invocations are removed, since snprintf nul-terminates
the output in any case.
A similar wrapper is used for strftime calls, but only in timedatectl.c.
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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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Not all switch roots are like base_filesystem_create() wants them
to look like. They might even boot, if they are RO and don't have the FS
layout. Just ignore the error and switch_root nevertheless.
base_filesystem_create() should have logged, what went wrong.
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Leaving the old root around seems better than aborting the
switch.
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removes code duplication
also move switch-root to shared
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