KILLPG(2)KILLPG(2)NAMEkillpg - send signal to a process group
SYNOPSIS
killpg(pgrp, sig)
int pgrp, sig;
DESCRIPTION
Killpg sends the signal sig to the process group pgrp. See sigvec(2)
for a list of signals.
The sending process and members of the process group must have the same
effective user ID, or the sender must be the super-user. As a single
special case the continue signal SIGCONT may be sent to any process
that is a descendant of the current process.
RETURN VALUE
Upon successful completion, a value of 0 is returned. Otherwise, a
value of -1 is returned and the global variable errno is set to
indicate the error.
ERRORS
Killpg will fail and no signal will be sent if any of the following
occur:
[EINVAL] Sig is not a valid signal number.
[ESRCH] No process can be found in the process group specified
by pgrp.
[ESRCH] The process group was given as 0 but the sending process
does not have a process group.
[EPERM] The sending process is not the super-user and one or
more of the target processes has an effective user ID
different from that of the sending process.
SEE ALSOkill(2), getpgrp(2), sigvec(2)4th Berkeley Distribution May 14, 1986 KILLPG(2)