mirror of
https://github.com/jart/cosmopolitan.git
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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 -*-│
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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/internal.h"
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#include "libc/calls/ioctl.h"
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#include "libc/calls/strace.internal.h"
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#include "libc/calls/syscall-sysv.internal.h"
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#include "libc/dce.h"
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#include "libc/sysv/consts/o.h"
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#include "libc/sysv/errfuns.h"
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/**
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* Sets "close on exec" on file descriptor the fast way.
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*
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* @see ioctl(fd, FIOCLEX, 0) dispatches here
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*/
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int ioctl_fioclex(int fd, int req) {
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int rc;
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if (fd >= 0) {
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if (IsWindows() || (fd < g_fds.n && g_fds.p[fd].kind == kFdZip)) {
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if (__isfdopen(fd)) {
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if (req == FIOCLEX) {
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g_fds.p[fd].flags |= O_CLOEXEC;
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} else {
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g_fds.p[fd].flags &= ~O_CLOEXEC;
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}
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rc = 0;
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} else {
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rc = ebadf();
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}
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} else {
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rc = sys_ioctl(fd, req);
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}
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} else {
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rc = einval();
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}
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STRACE("%s(%d, %d) → %d% m", "ioctl_fioclex", fd, req, rc);
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return rc;
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}
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