When a process quits in response to a signal it handles, it should to so
be re-sending the signal to itself. This especially important for SIGINT,
as is explained in [1].
uloop currently hides the reason for quitting uloop_run(). Fix this by
returning the signal that caused the loop to quit (or 0 when uloop_end()
was used), so a program using loop an comply with [1].
[1] https://www.cons.org/cracauer/sigint.html
Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net>
Consistently handle allocation failures. Some functions are changed to
return bool or int instead of void to allow returning an error.
Also fix a buffer size miscalculation in lua/uloop and use _exit() instead
of exit() on errors after forking.
Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net>
Fix a race condition when do_sigchld, uloop_cancelled were set just
before epoll_wait(timeout=-1), resulting the loop stuck in the syscall
without noticing the events just happened
Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
We already serialize BLOBMSG_TYPE_UNSPEC as "null" so represent JSON null
values as blob attribute type unspec with payload size zero.
Signed-off-by: Jo-Philipp Wich <jow@openwrt.org>
Different distributions have different names for the lua 5.1 package.
Use cmake's built in pkg-config support to search for the first one,
rather than running it explicitly and searching for a single version.
Signed-off-by: Karl Palsson <karlp@remake.is>
Race is possible in ulog_kmsg(): if no /dev/kmsg exists
(e.g. while /dev gets re-mounted) regular file created instead.
>From this point system goes without kernel logger:
special character file can't be created anymore, all clients keep
overwriting single message in regular file.
To avoid this we open file in "r+" mode which doesn't create
file if it's not found.
Signed-off-by: Sergiy Kibrik <sakib@meta.ua>
Cc: John Crispin <blogic@openwrt.org>
The default uloop error handling is to delete the fd. Continue to do
that, but also set the write_error flag and notify the user.
Signed-off-by: Philip Craig <philipjcraig@gmail.com>
Add ability to skip building the examples. The default value is ON to follow
the original cmake behavior.
Signed-off-by: Nikolay Dimitrov <picmaster@mail.bg>
User's s->notify_read is called in ustream_fill_read(). If
s->read_blocked is set there, then stop reading more.
Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>
No functional change.
- Reuse existing NULL check on buf.
- Add some comments for ease of reading the code.
Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>
Use PKG_SEARCH_MODULE() to detect json-c library,
otherwise the search fails, if both json-c and json
are not present in pkg-config database.
Signed-off-by: Yegor Yefremov <yegorslists@googlemail.com>
The ulog api is intended to be used by procd, fstools, ubox etc. to provide
a generic logging api for early boot messages and automatic switching between
syslog / kmsg / stdout depending on the way the process is executed.
Signed-off-by: Jo-Philipp Wich <jow@openwrt.org>
Most app don't want to crash because of unhandled SIGPIPE. It could
happen is such trivial situations like writing to socket.
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
It turns out that mach_absolute_time() is not monotonic at all. While
at it, convert the CLOCK_REALTIME implementation to using
clock_get_time() as well.
Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>
It can be used to fill caller-specified buffer with data already in
ustream read buffer. Useful in the following use pattern.
int available = ustream_pending_data(s, false);
if (available >= sizeof(struct msghdr)) {
struct msghdr h;
ustream_read(s, &h, sizeof(h));
}
Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>
Otherwise some flags like USOCK_NONBLOCK wouldn't work as expected
(O_NONBLOCK affects connect behavior).
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
