mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-02-07 23:13:34 +00:00
072e1d2910
- Fix sigsuspend() on XNU - Fix strsignal() on non-Linux - Add unit tests for strsignal() - Add unit tests for setitimer() - Add unit tests for sigsuspend() - Rewrite setitimer() for New Technology - Rewrite nanosleep() for New Technology - Polyfill SIGALRM on the New Technology - select(0,0,0,0) on NT now calls pause() - Remove some NTDLL calls that aren't needed - Polyfill SA_NOCLDWAIT on the New Technology - Polyfill SA_RESETHAND on the New Technology - Polyfill sigprocmask() on the New Technology - Polyfill SIGCHLD+SIG_IGN on the New Technology - Polyfill SA_RESTART masking on the New Technology - Deliver console signals from main thread on New Technology - Document SA_RESTART behavior w/ @sarestartable / @norestart - System call trace in MODE=dbg now prints inherited FDs and signal mask
82 lines
3.8 KiB
C
82 lines
3.8 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 2020 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/assert.h"
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#include "libc/calls/internal.h"
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#include "libc/calls/strace.internal.h"
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#include "libc/calls/struct/iovec.h"
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#include "libc/calls/struct/siginfo.h"
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#include "libc/calls/typedef/sigaction_f.h"
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#include "libc/limits.h"
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#include "libc/nt/errors.h"
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#include "libc/nt/files.h"
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#include "libc/nt/runtime.h"
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#include "libc/nt/struct/overlapped.h"
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#include "libc/runtime/internal.h"
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#include "libc/str/str.h"
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#include "libc/sysv/consts/sig.h"
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#include "libc/sysv/errfuns.h"
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static textwindows ssize_t sys_write_nt_epipe(int fd) {
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siginfo_t info;
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STRACE("WriteFile(%d:%p) → %m", fd, g_fds.p[fd].handle);
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if (!__sighandrvas[SIGPIPE]) {
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__restorewintty();
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_Exit(128 + SIGPIPE);
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} else if (__sighandrvas[SIGPIPE] >= kSigactionMinRva) {
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bzero(&info, sizeof(info));
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((sigaction_f)(_base + __sighandrvas[SIGPIPE]))(SIGPIPE, &info, 0);
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}
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return epipe();
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}
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static textwindows ssize_t sys_write_nt_impl(int fd, void *data, size_t size,
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ssize_t offset) {
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uint32_t sent;
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struct NtOverlapped overlap;
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if (WriteFile(g_fds.p[fd].handle, data, clampio(size), &sent,
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offset2overlap(offset, &overlap))) {
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return sent;
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} else if (GetLastError() == kNtErrorBrokenPipe) {
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return sys_write_nt_epipe(fd);
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} else {
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return __winerr();
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}
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}
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textwindows ssize_t sys_write_nt(int fd, const struct iovec *iov, size_t iovlen,
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ssize_t opt_offset) {
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ssize_t rc;
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size_t i, total;
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uint32_t size, wrote;
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struct NtOverlapped overlap;
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while (iovlen && !iov[0].iov_len) iov++, iovlen--;
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if (iovlen) {
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for (total = i = 0; i < iovlen; ++i) {
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if (!iov[i].iov_len) continue;
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rc = sys_write_nt_impl(fd, iov[i].iov_base, iov[i].iov_len, opt_offset);
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if (rc == -1) return -1;
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total += rc;
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if (opt_offset != -1) opt_offset += rc;
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if (rc < iov[i].iov_len) break;
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}
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return total;
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} else {
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return sys_write_nt_impl(fd, NULL, 0, opt_offset);
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}
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}
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