CAP_EVENT was omitted on pidfiles (in
pidfile_open()). There seems no reason why a process that creates
and writes a pidfile cannot monitor events on that file. This mod adds
the capability.
Reviewed by: cem@
MFC after: 2 weeks
Sponsored by: Dell EMC Isilon
Differential Revision: https://reviews.freebsd.org/D25363
r322369's use of basename(3) was incorrect and worked by accident so
long as the pidfile path was absolute or consisted of a single
component. Fix the basename() usage and add a regression test.
Reported by: 0mp
Reviewed by: cem
MFC after: 3 days
Differential Revision: https://reviews.freebsd.org/D19728
Mainly focus on files that use BSD 2-Clause license, however the tool I
was using mis-identified many licenses so this was mostly a manual - error
prone - task.
The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.
function instead of unlink(2).
Now when pidfile_remove() uses unlinkat(2) to remove the pidfile
it is safe to use this function in capability mode.
Style fix: sort headers.
PR: 220524
Reviewed by: markj
Differential Revision: https://reviews.freebsd.org/D11692
EAGAIN/EWOULDBLOCK when another daemon was running and had the pidfile open.
We should return EEXIST in that case, fix it.
Reported by: Dirk Engling <erdgeist@erdgeist.org>
Reviewed by: jhb, Dirk Engling <erdgeist@erdgeist.org>
MFC after: 1 week
when the child process execs daemon's target program thanks to flock(2)
semantics. So, we apparently have to leak the open pidfile's file
descriptor to keep the lock for the pidfile(3) functions to work properly.
Test case demonstrated by trociny:
ref8-amd64:/home/trociny% uname -r
8.2-STABLE
ref8-amd64:/home/trociny% daemon -p /tmp/sleep.pid sleep 10
ref8-amd64:/home/trociny% daemon -p /tmp/sleep.pid sleep 10
daemon: process already running, pid: 19799
kopusha:~% uname -r
10.0-CURRENT
kopusha:~% daemon -p /tmp/sleep.pid sleep 10
kopusha:~% daemon -p /tmp/sleep.pid sleep 10
kopusha:~%
for pidfh in libutil.h in its place.
This allows us to hide the contents of the pidfh structure, and also
allowed removal of the "#ifdef _SYS_PARAM_H" guard from around the
pidfile_* function prototypes.
Suggested by pjd.
and the caller requested other process' PID by passing non-NULL pidptr
argument, we will wait at most 100ms for the PID to show up in the file and if
it won't, we will store -1 in *pidptr.
From now on, pidfile_open() function never sets errno to EAGAIN on failure.
In collaboration with: des
MFC after: 1 week
success and zero pid from pidfile_read(). Return EAGAIN instead. Sleep
up to three times for 5 ms while waiting for pidfile to be written.
mount(8) does the kill(mountpid, SIGHUP). If mountd pidfile is truncated,
that would result in the SIGHUP delivered to the mount' process group
instead of the mountd.
Found and analyzed by: Peter Holm
Tested by: Peter Holm, kris
Reviewed by: pjd
MFC after: 1 week
to pidfile_write happen, the pidfile will have nul characters prepended
due to the cached file descriptor offset...
Reviewed by: scottl
MFC after: 3 days
