mirror of
https://github.com/jart/cosmopolitan.git
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61 lines
3.1 KiB
C
61 lines
3.1 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2021 Justine Alexandra Roberts Tunney │
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│ │
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│ Permission to use, copy, modify, and/or distribute this software for │
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│ any purpose with or without fee is hereby granted, provided that the │
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│ above copyright notice and this permission notice appear in all copies. │
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│ │
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│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
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│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
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│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
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│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
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│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
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│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
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│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
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│ PERFORMANCE OF THIS SOFTWARE. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/calls/calls.h"
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#include "libc/calls/struct/siginfo.h"
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#include "libc/calls/struct/siginfo.internal.h"
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#include "libc/calls/struct/sigval.h"
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#include "libc/calls/struct/sigval.internal.h"
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#include "libc/dce.h"
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#include "libc/str/str.h"
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#include "libc/sysv/consts/sicode.h"
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/* TODO(jart): XNU */
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/**
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* Sends signal to process, with data.
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*
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* The impact of this action can be terminating the process, or
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* interrupting it to request something happen.
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*
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* @param pid can be:
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* >0 signals one process by id
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* =0 signals all processes in current process group
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* -1 signals all processes possible (except init)
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* <-1 signals all processes in -pid process group
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* @param sig can be:
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* >0 can be SIGINT, SIGTERM, SIGKILL, SIGUSR1, etc.
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* =0 checks both if pid exists and we can signal it
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* @return 0 if something was accomplished, or -1 w/ errno
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* @note this isn't supported on OpenBSD
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* @asyncsignalsafe
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*/
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int sigqueue(int pid, int sig, const union sigval value) {
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siginfo_t info;
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if (IsFreebsd()) {
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return sys_sigqueue(pid, sig, value);
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} else {
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bzero(&info, sizeof(info));
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info.si_signo = sig;
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info.si_code = SI_QUEUE;
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info.si_pid = getpid();
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info.si_uid = geteuid();
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info.si_value = value;
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return sys_sigqueueinfo(pid, &info);
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}
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}
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