mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-01-31 11:37:35 +00:00
55 lines
3 KiB
C
55 lines
3 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
|
|
│vi: set net 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/internal.h"
|
|
#include "libc/calls/strace.internal.h"
|
|
#include "libc/calls/struct/stat.internal.h"
|
|
#include "libc/dce.h"
|
|
#include "libc/intrin/asan.internal.h"
|
|
#include "libc/intrin/describeflags.internal.h"
|
|
#include "libc/intrin/weaken.h"
|
|
#include "libc/sysv/errfuns.h"
|
|
#include "libc/zipos/zipos.internal.h"
|
|
|
|
/**
|
|
* Returns information about file, via open()'d descriptor.
|
|
*
|
|
* @return 0 on success or -1 w/ errno
|
|
* @raise EBADF if `fd` isn't a valid file descriptor
|
|
* @raise EIO if an i/o error happens while reading from file system
|
|
* @raise EOVERFLOW shouldn't be possible on 64-bit systems
|
|
* @asyncsignalsafe
|
|
*/
|
|
int fstat(int fd, struct stat *st) {
|
|
int rc;
|
|
if (__isfdkind(fd, kFdZip)) {
|
|
rc = weaken(__zipos_fstat)(
|
|
(struct ZiposHandle *)(intptr_t)g_fds.p[fd].handle, st);
|
|
} else if (!IsWindows() && !IsMetal()) {
|
|
rc = sys_fstat(fd, st);
|
|
} else if (IsMetal()) {
|
|
rc = sys_fstat_metal(fd, st);
|
|
} else if (!__isfdkind(fd, kFdFile)) {
|
|
rc = ebadf();
|
|
} else {
|
|
rc = sys_fstat_nt(__getfdhandleactual(fd), st);
|
|
}
|
|
STRACE("fstat(%d, [%s]) → %d% m", fd, DescribeStat(rc, st), rc);
|
|
return rc;
|
|
}
|