|KILLPG(3)||Library Functions Manual||KILLPG(3)|
killpg — send
signal to a process group
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
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.
Upon successful completion, the value 0 is returned; otherwise the value -1 is returned and the global variable errno is set to indicate the error.
killpg() will fail and no signal will be
killpg() function conforms to the
X/Open System Interfaces option of the IEEE Std 1003.1-2008
The handling of process group 0 is an extension to that standard.
killpg() function call appeared in
|May 7, 2017||OpenBSD-current|