54 lines
2.7 KiB
C
54 lines
2.7 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
|
|
│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
|
|
╞══════════════════════════════════════════════════════════════════════════════╡
|
|
│ Copyright 2020 Justine Alexandra Roberts Tunney │
|
|
│ │
|
|
│ Permission to use, copy, modify, and/or distribute this software for │
|
|
│ any purpose with or without fee is hereby granted, provided that the │
|
|
│ above copyright notice and this permission notice appear in all copies. │
|
|
│ │
|
|
│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
|
|
│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
|
|
│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
|
|
│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
|
|
│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
|
|
│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
|
|
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
|
|
│ PERFORMANCE OF THIS SOFTWARE. │
|
|
╚─────────────────────────────────────────────────────────────────────────────*/
|
|
#include "libc/calls/calls.h"
|
|
#include "libc/calls/internal.h"
|
|
#include "libc/dce.h"
|
|
#include "libc/sysv/errfuns.h"
|
|
|
|
/**
|
|
* Sends signal to process.
|
|
*
|
|
* The impact of this action can be terminating the process, or
|
|
* interrupting it to request something happen.
|
|
*
|
|
* @param pid can be:
|
|
* >0 signals one process by id
|
|
* =0 signals all processes in current process group
|
|
* -1 signals all processes possible (except init)
|
|
* <-1 signals all processes in -pid process group
|
|
* @param sig can be:
|
|
* >0 can be SIGINT, SIGTERM, SIGKILL, SIGUSR1, etc.
|
|
* =0 is for error checking
|
|
* @return 0 if something was accomplished, or -1 w/ errno
|
|
* @asyncsignalsafe
|
|
*/
|
|
int kill(int pid, int sig) {
|
|
int me;
|
|
if (!IsWindows()) {
|
|
return kill$sysv(pid, sig, 1);
|
|
} else {
|
|
me = getpid();
|
|
if (!pid || pid == me || pid == -me) {
|
|
return raise(sig);
|
|
} else {
|
|
return enosys();
|
|
}
|
|
}
|
|
}
|