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KILLPG(2) | System Calls Manual | KILLPG(2) |
NAME¶
killpg
—
send signal to a process group
LIBRARY¶
Standard C Library (libc, -lc)SYNOPSIS¶
#include
<sys/types.h>
#include
<signal.h>
int
killpg
(pid_t
pgrp, int
sig);
DESCRIPTION¶
Thekillpg
() 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¶
Thekillpg
() 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¶
Thekillpg
() 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.
SEE ALSO¶
getpgrp(2), kill(2), sigaction(2)HISTORY¶
Thekillpg
() function appeared in
4.0BSD.March 15, 2012 | Debian |