NAME

killpg − send signal to a process group

SYNOPSIS

/usr/ucb/cc  [ flag. . . ] file . . . int killpg(pgrp, sig)
int pgrp, sig;

DESCRIPTION

killpg sends the signal sig to the process group pgrp. See sigvec(3) 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 the privileged user.  A single exception is the signal SIGCONT, which may always be sent to any 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 processes were found in the specified process group. 

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

SEE ALSO

kill(2), setpgrp(2), sigaction(2), sigvec(3). 

  —  BSD Compatibility Package