KILLPG(2) | System Calls Manual | KILLPG(2) |
killpg
— send
signal to a process group
Standard C Library (libc, -lc)
#include
<signal.h>
int
killpg
(pid_t
pgrp, int sig);
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 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 with the same session ID as the caller.
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.
The killpg
() function will fail and no
signal will be sent if:
EINVAL
]EPERM
]ESRCH
]ESRCH
]#include
<sys/types.h>
#include
<signal.h>
The include file
<sys/types.h>
is
necessary.
The killpg
() function appeared in
4.0BSD.
October 10, 2006 | macOS 14.6 |