src/lib/libutil/pidfile.3, branch releng/8.0

Add missing .Pp

2009-06-06T17:34:49+00:00

pidfile(3) uses flopen(3) - don't make any assumptions about how the

2008-10-20T18:00:11+00:00

latter is implemented.

Minor mdoc cleanup: Every sentence should start on its own line.

2007-10-13T11:09:45+00:00

When pidfile is already locked and has zero length, do not return

2007-10-12T10:38:05+00:00

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

Use `intmax_t' instead of plain `int' for pid_t casts.

2006-03-04T15:20:28+00:00

Useful tips from:	ru, bde
Approved by:		pjd
MFC after:		3 days

- Add a note that passing NULL to pidfile_write(), pidfile_remove() and

2006-01-28T14:13:15+00:00

  pidfile_close() functions is safe. This possibility is used in example code.
- Cast pid_t to int.

Requested by:	yar

Fix markup, grammar and spelling.

2005-11-18T14:21:28+00:00

Pidfiles should be created with permission preventing users from opening

2005-09-16T11:24:28+00:00

them for reading. When user can open file for reading, he can also
flock(2) it, which can lead to confusions.

Pointed out by:	green

Add a family of functions for reliable pidfiles handling.

2005-08-24T17:21:38+00:00

Idea from:	jmg
Discussed on:	arch@