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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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and start of list
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Otherwise they can be optimized away with -DNDEBUG
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Types used for pids and uids in various interfaces are unpredictable.
Too bad.
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This reverts commit 68e68ca8106e7cd874682ae425843b48579c6539. We *need*
root access to create cgroups. The only exception is if it is run from
within a cgroup with "Delegate=yes". However, this is not always true and
we really shouldn't rely on this.
If your terminal runs from within a systemd --user instance, you're fine.
Everyone else is not (like running from ssh, VTs, and so on..).
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We can properly run the tests without being root
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Only 5 tests cannot be executed if we are not root, so just skip them
but not the whole set.
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Check string ops hashmap_put() for keys with a different pointer but the same
value.
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rules, using libiptc
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cunescape_length_with_prefix() is called with the length as an
argument, so it cannot rely on the buffer being NUL terminated.
Move the length check before accessing the memory.
When an incomplete escape sequence was given at the end of the
buffer, c_l_w_p() would read past the end of the buffer. Fix this
and add a test.
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With a command line like "@/something" we would allocate an array with
0 elements. Avoid that, and add a test too.
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Fixes an error introduced by me when the test was added.
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We would ignore options like "fail" and "auto", and for any option
which takes a value the first assignment would win. Repeated and
options equivalent to the default are rarely used, but they have been
documented forever, and people might use them. Especially on the
kernel command line it is easier to append a repeated or negated
option at the end.
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This fixes parsing of options in shared/generator.c. Existing code
had some issues:
- it would treate whitespace and semicolons as seperators. fstab(5)
is pretty clear that only commas matter. And the syntax does
not allow for spaces to be inserted in the field in fstab.
Whitespace might be escaped, but then it should not seperate
options. Treat whitespace and semicolons as any other character.
- it assumed that x-systemd.device-timeout would always be followed
by "=". But this is not guaranteed, hasmntopt will return this
option even if there's no value. Uninitialized memory could be read.
- some error paths would log, and inconsistently, some would just
return an error code.
Filtering is split out to a separate function and tests are added.
Similar code paths in other places are adjusted to use the new function.
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Sometimes it is necessary to stop a generator from running. Either
because of a bug, or for testing, or some other reason. The only way
to do that would be to rename or chmod the generator binary, which is
inconvenient and does not survive upgrades. Allow masking and
overriding generators similarly to units and other configuration
files.
For the systemd instance, masking would be more common, rather than
overriding generators. For the user instances, it may also be useful
for users to have generators in $XDG_CONFIG_HOME to augment or
override system-wide generators.
Directories are searched according to the usual scheme (/usr/lib,
/usr/local/lib, /run, /etc), and files with the same name in higher
priority directories override files with the same name in lower
priority directories. Empty files and links to /dev/null mask a given
name.
https://bugs.freedesktop.org/show_bug.cgi?id=87230
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Remove the optional sepearate opening of the directory,
it would be just too complicated with the change to
multiple directories.
Move the middle of execute_directory() to a seperate
function to make it easier to grok.
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Even though we use fallocate() it appears that file systems like btrfs
will trigger SIGBUS on certain low-disk-space situation. We should
handle that, hence catch the signal, add it to a list of invalidated
pages, and replace the page with an empty memory area. After each write
check if SIGBUS was triggered, and consider the write invalid if it was.
This should make journald a lot more robust with file systems where
fallocate() is not reliable, for example all CoW file systems
(btrfs...), where changing written data can fail with disk full errors.
https://bugzilla.redhat.com/show_bug.cgi?id=1045810
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https://github.com/vlajos/misspell_fixer
https://github.com/torstehu/systemd/commit/b6fdeb618cf2f3ce1645b3315f15f482710c7ffa
Thanks to Torstein Husebo <torstein@huseboe.net>.
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This macro calculates A / B but rounds up instead of down. We explicitly
do *NOT* use:
(A + B - 1) / A
as it suffers from an integer overflow, even though the passed values are
properly tested against overflow. Our test-cases show this behavior.
Instead, we use:
A / B + !!(A % B)
Note that on "Real CPUs" this does *NOT* result in two divisions. Instead,
instructions like idivl@x86 provide both, the quotient and the remainder.
Therefore, both algorithms should perform equally well (I didn't verify
this, though).
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This file was introduced with linux-3.2, use it instead of probing for it
via prctl(PR_CAPBSET_READ).
For now, keep the old code for backwards compat. We can drop it once 3.2
is our lowest requirement.
The test-cap-list code is extended to verify cap_last_cap() is the same as
we'd get via prctl probing and /proc.
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In test_raw_clone, make sure the cloned thread calls _exit() and in the parent
thread call waitpid(..., __WCLONE) to wait for the child thread to terminate,
otherwise there is a race condition where the child thread will log to the
console after the test process has already exited and the assertion from the
child thread might not be enforced.
The absence of this patch might also create problems for other tests that would
be added after this one, since potentially both parent and child would run
those tests as the child would continue running.
Tested by confirming that the logs from the child are printed before the test
terminates and that a false assertion in the child aborts the test with a core
dump.
[zj: also add check for the return value.]
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The asserts used in the tests should never be allowed to be optimized away.
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The new test-cap-list introduced in commit 2822da4fb7f891 uses the included
table of capabilities. However, it uses cap_last_cap() which probes the kernel
for the last available capability. On an older kernel (e.g. 3.10 from RHEL 7)
that causes the test to fail with the following message:
Assertion '!capability_to_name(cap_last_cap()+1)' failed at src/test/test-cap-list.c:30, function main(). Aborting.
Fix it by exporting the size of the static table and using it in the test
instead of the dynamic one from the current kernel.
Tested by successfully running ./test-cap-list and the whole `make check` test
suite with this patch on a RHEL 7 host.
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subvolumes
We make use of the btrfs subvol crtime for this, and for gpt images of a
manually managed xattr, if we can.
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files from core
Stuff in src/shared or src/libsystemd should *never* include code from
src/core or any of the tools, so don't do that here either. It's not OK!
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We originally only supported escaping ucs2 encoded characters (as \uxxxx). This
only covers the BMP. Support escaping also utf16 surrogate pairs (on the form
\uxxxx\uyyyy) to cover all of unicode.
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We originally only supported the BMP (i.e., we treated UTF-16 as UCS-2).
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Originally we only supported ucs2, so move the ucs4 version from libsystemd-terminal to shared
and use that everywhere.
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The handling of the command name and other arguments is unified. This
simplifies things and should make them more predictable for users.
Incidentally, this makes ExecStart handling match the .desktop file
specification, apart for the requirment for an absolute path.
https://bugs.freedesktop.org/show_bug.cgi?id=86171
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Commit a2a5291b3f5 changed the parser to reject unfinished quoted
strings. Unfortunately it introduced an error where a trailing
backslash would case an infinite loop. Of course this must fixed, but
the question is what to to instead. Allowing trailing backslashes and
treating them as normal characters would be one option, but this seems
suboptimal. First, there would be inconsistency between handling of
quoting and of backslashes. Second, a trailing backslash is most
likely an error, at it seems better to point it out to the user than
to try to continue.
Updated rules:
ExecStart=/bin/echo \\ → OK, prints a backslash
ExecStart=/bin/echo \ → error
ExecStart=/bin/echo "x → error
ExecStart=/bin/echo "x"y → error
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