NAME

killpg − send signal to a process group

SYNOPSIS

int 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 real or effective user ID of the sending process must match the real or saved set-user ID of the receiving process, unless the effective user ID of the sending process is super-user.  A single exception is the signal SIGCONT, which may always be sent to any descendant of the current process. 

RETURN VALUES

killpg() returns:

0 on success. 

−1 on failure and sets errno to indicate the error. 

ERRORS

killpg() will fail and no signal will be sent if any of the following occur:

EINVAL sig was not a valid signal number. 

EPERM The effective user ID of the sending process was not super-user, and neither its real nor effective user ID matched the real or saved set-user ID of one or more of the target processes. 

ESRCH No processes were found in the specified process group. 

SEE ALSO

kill(2V), getpgrp(2V), sigvec(2)

Solbourne Computer, Inc.  —  21 January 1990