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Current glibc implementation is safe. Kernel does this atomically,
and write is actually implemented through writev. So if write is
async-signal-safe, than writev pretty much must be too.
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https://launchpad.net/bugs/1271163
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https://launchpad.net/bugs/1272658
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Another instance of https://sourceware.org/bugzilla/show_bug.cgi?id=16504.
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Let's unify our code here, and also always specifiy O_CLOEXEC.
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On other archs we'll not define it so that open_tmpfile() falls back to
unguessable name + unlink.
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Make it use dev_urandom() and endswith().
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doesn't fall back to PRNG
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Let's make use of fd_wait_for_event() here, instead of rolling our own.
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This reverts commit 2cba2e03524ec0922ddc70f933e8a89b7d23b4ec.
It breaks bootup with dracut, the transition to the real rootfs fails.
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When set to auto, status will shown when the first ephemeral message
is shown (a job has been running for five seconds). Then until the
boot or shutdown ends, status messages will be shown.
No indication about the switch is done: I think it should be clear
for the user that first the cylon eye and the ephemeral messages appear,
and afterwards messages are displayed.
The initial arming of the event source was still wrong, but now should
really be fixed.
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signal(7) provides a list of functions which may be called from a
signal handler. Other functions, which only call those functions and
don't access global memory and are reentrant are also safe.
sd_j_sendv was mostly OK, but would call mkostemp and writev in a
fallback path, which are unsafe.
Being able to call sd_j_sendv in a async-signal-safe way is important
because it allows it be used in signal handlers.
Safety is achieved by replacing mkostemp with open(O_TMPFILE) and an
open-coded writev replacement which uses write. Unfortunately,
O_TMPFILE is only available on kernels >= 3.11. When O_TMPFILE is
unavailable, an open-coded mkostemp is used.
https://bugzilla.gnome.org/show_bug.cgi?id=722889
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This will only work on Linux >= 3.11, and probably not on all
filesystems. Fallback code is provided.
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sizes and numbers of hash functions
In order to make the bloom filter logic more future proof communicate
bloom filter parameters from the original bus creator to the clients,
and allow them to be variable within certain ranges.
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Add new calls sd_bus_open() and sd_bus_default() for connecting to the
starter bus a service was invoked for, or -- if the process is not a
bus-activated service -- the appropriate bus for the scope the process
has been started in.
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message from the queue
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Thanks to Stefan Nagy <public@stefan-nagy.at>.
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We know that launching a unit will fail if some required directories
haven't been mounted yet. There's no point in starting it just to
have it fail even before it gets a chance to run.
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Just a microopt.
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It would fire just once.
Also fix units from sec to usec as appropriate.
Decrease the switching interval to 1/3 s, so that when the time
remaining is displayed with 1s precision, it doesn't jump by 2s every
once in a while. Also, the system is feels noticably faster when the
status changes couple of times per second instead of every few
seconds.
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Produces output like:
[ *** ] (1 of 2) A start job is running for slow.service (33s / 1min 30s)
The first nubmer is the time since job start, the second is the job timeout.
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Things will continue when either the job timeout
or the unit timeout is reached. Add functionality to
access that info.
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logind considers it an error for a seat other than seat0 to have a
non-zero vtnr for CreateSession
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The cppcheck target was introduced by commit 16f4efb4150c65e3c61adaa8ea512489de49f532
"build-sys: add cppcheck target". But it is preferable to use a make phony target
for it, as this patch does.
There are two general reasons to use a phony target: to avoid a
conflict with a file of the same name, and to improve performance. In
this case the first reason is obvious, and the second is that make
skips the implicit rule search for phony targets, since it knows that
phony targets do not name actual files that could be remade from other
files (as described in the "Gnu Make" Manual).
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Debian recently introduced the option key-slot to /etc/crypttab to
specify the LUKS key slot to be used for decrypting the device. On
systems where a keyfile is used and the key is not in the first slot,
this can speed up the boot process quite a bit, since cryptsetup does
not need to try all of the slots sequentially. (Unsuccessfully testing
a key slot typically takes up to about 1 second.)
This patch makes systemd aware of this option.
Debian bug that introduced the feature:
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=704470
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Compat stuff is moved to src/compat-libs/.
Warnings are issued when programs are linked with the deprecated library.
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https://sourceware.org/bugzilla/show_bug.cgi?id=16504
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A compatibility libsystemd-login library is created which uses
.symver and ifunc magic proposed by Lennart to make programs linked
to the old library name continue to work seamlessly.
Unfortunately the bfd linker crashes:
https://sourceware.org/bugzilla/show_bug.cgi?id=16467
This will be fixed in binutils 2.25.
As a work-around, gold can be used:
LDFLAGS=-Wl,-fuse-ld=gold
Unfortunately the switch to pick the linker appeared in gcc 4.8.
This also doesn't work with LLVM:
http://llvm.org/bugs/show_bug.cgi?id=11897
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gold doesn't exhibit the problems with linking of compatibility
libraries.
It is also slightly faster:
make clean && make -j5 bfd gold
real 34.885s 33.707s
user 34.486s 32.189s
sys 9.929s 10.845s
real 35.128s 33.508s
user 34.660s 31.858s
sys 10.798s 10.341s
real 35.405s 33.748s
user 34.765s 32.384s
sys 11.635s 10.998s
real 35.250s 33.795s
user 34.704s 32.253s
sys 11.220s 11.469s
touch src/libsystemd/sd-bus.c && make -j5
bfd gold
real 10.224s 9.030s
user 11.664s 9.877s
sys 3.431s 2.878s
real 10.021s 9.165s
user 11.526s 9.990s
sys 3.061s 3.015s
real 10.233s 8.961s
user 11.657s 9.973s
sys 3.467s 2.202s
real 10.160s 9.086s
user 11.637s 9.950s
sys 3.188s 2.859s
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This works around the goa daemon crash:
Jan 25 20:54:24 lon goa[1363]: goa-daemon version 3.10.2 starting [main.c:117, main()]
Jan 25 20:54:24 lon systemd[424]: Starting Legacy D-Bus Protocol Compatibility Daemon (PID 1363/UID 2702)...
Jan 25 20:54:24 lon systemd[424]: Started Legacy D-Bus Protocol Compatibility Daemon (PID 1363/UID 2702).
Jan 25 20:54:24 lon kernel: goa-daemon[1363]: segfault at 20 ip 00007f46914b26d5 sp 00007fff1ae6d9a0 error 4 in libtelepathy-glib.so.0.80.1[7f469144f000+228000]
Jan 25 20:54:24 lon systemd-coredump[1368]: Process 1363 (goa-daemon) dumped core.
Jan 25 20:54:32 lon goa[1375]: goa-daemon version 3.10.2 starting [main.c:117, main()]
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Fix/add some structured logging messages, and be uniform about when we WARN and ERR.
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Also insist on messages being sealed before reading them. In other
words we don't allow interleaving of reading and appending to messages.
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ps can display slice unit for a process.
https://gitorious.org/procps/procps/commit/93e7872995d0d1ae850e12fb5fdd64928e2d5e60
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