KILLPG(2) |
FreeBSD System Calls Manual |
KILLPG(2) |
NAME
killpg —
send signal to a process group
LIBRARY
Standard C Library (libc, -lc)
DESCRIPTION
The
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 process group.
The sending process must be able to kill() at least one process in the receiving process group.
RETURN VALUES
The
killpg() function returns the value 0 if successful; otherwise the value -1 is returned and the global variable
errno is set to indicate the error.
ERRORS
The
killpg() function will fail and no signal will be sent if:
-
[
EINVAL]
-
The
sig argument is not a valid signal number.
-
[
ESRCH]
-
No process can be found in the process group specified by
pgrp.
-
[
EPERM]
-
kill() returns EPERM for all processes in the process group.
HISTORY
The
killpg() function appeared in
4.0BSD.