mirror of
https://github.com/jart/cosmopolitan.git
synced 2024-05-18 03:22:40 +00:00
e16a7d8f3b
`et` means `expandtab`. ```sh rg 'vi: .* :vi' -l -0 | \ xargs -0 sed -i '' 's/vi: \(.*\) et\(.*\) :vi/vi: \1 xoet\2:vi/' rg 'vi: .* :vi' -l -0 | \ xargs -0 sed -i '' 's/vi: \(.*\)noet\(.*\):vi/vi: \1et\2 :vi/' rg 'vi: .* :vi' -l -0 | \ xargs -0 sed -i '' 's/vi: \(.*\)xoet\(.*\):vi/vi: \1noet\2:vi/' ```
69 lines
3.3 KiB
C
69 lines
3.3 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
|
|
│ vi: set et ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi │
|
|
╞══════════════════════════════════════════════════════════════════════════════╡
|
|
│ Copyright 2020 Justine Alexandra Roberts Tunney │
|
|
│ │
|
|
│ Permission to use, copy, modify, and/or distribute this software for │
|
|
│ any purpose with or without fee is hereby granted, provided that the │
|
|
│ above copyright notice and this permission notice appear in all copies. │
|
|
│ │
|
|
│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
|
|
│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
|
|
│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
|
|
│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
|
|
│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
|
|
│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
|
|
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
|
|
│ PERFORMANCE OF THIS SOFTWARE. │
|
|
╚─────────────────────────────────────────────────────────────────────────────*/
|
|
#include "libc/calls/calls.h"
|
|
#include "libc/calls/cp.internal.h"
|
|
#include "libc/calls/internal.h"
|
|
#include "libc/calls/syscall-nt.internal.h"
|
|
#include "libc/calls/syscall-sysv.internal.h"
|
|
#include "libc/dce.h"
|
|
#include "libc/intrin/strace.internal.h"
|
|
#include "libc/runtime/runtime.h"
|
|
#include "libc/sysv/errfuns.h"
|
|
|
|
/**
|
|
* Blocks until kernel flushes non-metadata buffers for fd to disk.
|
|
*
|
|
* NOTE: For `IsXnu()` it's recommended that `fcntl(F_FULLFSYNC)` be
|
|
* favored instead of this function, and if that fails, the fallback
|
|
* path should call `fsync()` see the SQLite codebase. In the future
|
|
* Cosmopolitan might do this automatically.
|
|
*
|
|
* @return 0 on success, or -1 w/ errno
|
|
* @raise ECANCELED if thread was cancelled in masked mode
|
|
* @raise EROFS if `fd` is on a read-only filesystem e.g. /zip
|
|
* @raise EINVAL if `fd` is a special file w/o synchronization
|
|
* @raise ENOSPC if disk space was exhausted
|
|
* @raise EBADF if `fd` isn't an open file
|
|
* @raise EINTR if signal was delivered
|
|
* @raise EIO if an i/o error happened
|
|
* @see __nosync to secretly disable
|
|
* @see sync(), fsync()
|
|
* @cancelationpoint
|
|
* @asyncsignalsafe
|
|
*/
|
|
int fdatasync(int fd) {
|
|
int rc;
|
|
bool fake = __nosync == 0x5453455454534146;
|
|
BEGIN_CANCELATION_POINT;
|
|
if (__isfdkind(fd, kFdZip)) {
|
|
rc = erofs();
|
|
} else if (!IsWindows()) {
|
|
if (!fake) {
|
|
rc = sys_fdatasync(fd);
|
|
} else {
|
|
rc = sys_fsync_fake(fd);
|
|
}
|
|
} else {
|
|
rc = sys_fdatasync_nt(fd, fake);
|
|
}
|
|
END_CANCELATION_POINT;
|
|
STRACE("fdatasync%s(%d) → %d% m", fake ? "_fake" : "", fd, rc);
|
|
return rc;
|
|
}
|