mirror of
https://github.com/jart/cosmopolitan.git
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56 lines
3 KiB
C
56 lines
3 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/calls/struct/fd.internal.h"
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#include "libc/errno.h"
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#include "libc/intrin/weaken.h"
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#include "libc/nt/enum/filetype.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/sysv/consts/o.h"
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void sys_fcntl_nt_lock_cleanup(int) _Hide;
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textwindows int sys_close_nt(struct Fd *fd, int fildes) {
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int e;
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bool ok = true;
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if (_weaken(sys_fcntl_nt_lock_cleanup)) {
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_weaken(sys_fcntl_nt_lock_cleanup)(fildes);
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}
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if (fd->kind == kFdFile && ((fd->flags & O_ACCMODE) != O_RDONLY &&
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GetFileType(fd->handle) == kNtFileTypeDisk)) {
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// Like Linux, closing a file on Windows doesn't guarantee it's
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// immediately synced to disk. But unlike Linux, this could cause
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// subsequent operations, e.g. unlink() to break w/ access error.
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e = errno;
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FlushFileBuffers(fd->handle);
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errno = e;
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}
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// if this file descriptor is wrapped in a named pipe worker thread
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// then we need to close our copy of the worker thread handle. it's
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// also required that whatever install a worker use malloc, so free
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if (!CloseHandle(fd->handle)) ok = false;
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if (fd->kind == kFdConsole && fd->extra && fd->extra != -1) {
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if (!CloseHandle(fd->extra)) ok = false;
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}
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return ok ? 0 : -1;
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}
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