KILLPG(2) Linux Programmer's Manual KILLPG(2)
NAME
killpg - send signal to a process group
SYNOPSIS
#include<signal.h>
intkillpg(int pgrp,int sig);
DESCRIPTION
Killpg sends the signal sig to the process group pgrp. See sigac-
tion(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 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.
RETURNVALUE
On success, zero is returned. On error, -1 is returned, and errno is
set appropriately.
ERRORS
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.
CONFORMINGTO
SVr4, 4.4BSD (The killpg function call first appeared in 4.0BSD).
SEEALSO
kill(2), getpgrp(2), signal(2)
BSD Man Page 1993-07-23 KILLPG(2)
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