|KILLPG(3)||Library Functions Manual||KILLPG(3)|
pgrp, int sig);
killpg() function sends the signal sig to the process group pgrp. See sigaction(2) for a list of signals. If pgrp is 0,
killpg() sends the signal to the sending process's process group.
The sending process and members of the process group must have the same effective user ID, or the sender must be the superuser. As a single special case the continue signal SIGCONT may be sent to any process with the same session ID as the caller.
killpg() will fail and no signal will be sent if:
killpg() function conforms to the X/Open System Interfaces option of the IEEE Std 1003.1-2008 (“POSIX.1”) specification.
The handling of process group 0 is an extension to that standard.
killpg() function call appeared in 4.0BSD.
|May 7, 2017||OpenBSD-current|