mirror of
https://github.com/jart/cosmopolitan.git
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d2f49ca175
Our makefile generator now accepts badly formatted include lines. It's now more hermetic with better error checking in the cosmo repo, and it can be configured to not be hermetic at all.
80 lines
3.9 KiB
C
80 lines
3.9 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 2022 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/sigtimedwait.h"
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#include "libc/calls/asan.internal.h"
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#include "libc/calls/cp.internal.h"
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#include "libc/calls/sigtimedwait.internal.h"
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#include "libc/calls/struct/siginfo.internal.h"
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#include "libc/calls/struct/sigset.internal.h"
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#include "libc/calls/struct/timespec.internal.h"
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#include "libc/dce.h"
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#include "libc/intrin/asan.internal.h"
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#include "libc/intrin/strace.internal.h"
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#include "libc/str/str.h"
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#include "libc/sysv/errfuns.h"
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/**
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* Waits for signal synchronously, w/ timeout.
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*
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* @param set is signals for which we'll be waiting
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* @param info if not null shall receive info about signal
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* @param timeout is relative deadline and null means wait forever
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* @return signal number on success, or -1 w/ errno
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* @raise EINTR if an asynchronous signal was delivered instead
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* @raise ECANCELED if thread was cancelled in masked mode
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* @raise EINVAL if nanoseconds parameter was out of range
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* @raise EAGAIN if deadline expired
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* @raise ENOSYS on Windows, XNU, OpenBSD, Metal
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* @raise EFAULT if invalid memory was supplied
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* @cancelationpoint
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*/
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int sigtimedwait(const sigset_t *set, siginfo_t *info,
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const struct timespec *timeout) {
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int rc;
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char strsig[21];
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struct timespec ts;
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union siginfo_meta si = {0};
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BEGIN_CANCELATION_POINT;
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if (IsAsan() && (!__asan_is_valid(set, sizeof(*set)) ||
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(info && !__asan_is_valid(info, sizeof(*info))) ||
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(timeout && !__asan_is_valid_timespec(timeout)))) {
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rc = efault();
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} else if (IsLinux() || IsFreebsd() || IsNetbsd()) {
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if (timeout) {
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// 1. Linux needs its size parameter
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// 2. NetBSD modifies timeout argument
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ts = *timeout;
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rc = sys_sigtimedwait(set, &si, &ts, 8);
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} else {
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rc = sys_sigtimedwait(set, &si, 0, 8);
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}
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if (rc != -1 && info) {
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__siginfo2cosmo(info, &si);
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}
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} else {
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rc = enosys();
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}
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END_CANCELATION_POINT;
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STRACE("sigtimedwait(%s, [%s], %s) → %s% m", DescribeSigset(0, set),
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DescribeSiginfo(rc, info), DescribeTimespec(0, timeout),
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strsignal_r(rc, strsig));
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return rc;
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}
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