cosmopolitan/libc/calls/fixenotdir.c
Jōshin e16a7d8f3b
flip et / noet in modelines
`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/'
```
2023-12-07 22:17:11 -05:00

68 lines
3.5 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 2022 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/errno.h"
#include "libc/intrin/kprintf.h"
#include "libc/nt/enum/fileflagandattributes.h"
#include "libc/nt/errors.h"
#include "libc/nt/files.h"
#include "libc/str/str.h"
static textwindows bool SubpathExistsThatsNotDirectory(char16_t *path) {
char16_t *p;
uint32_t attrs;
while ((p = strrchr16(path, '\\'))) {
*p = u'\0';
if ((attrs = GetFileAttributes(path)) != -1u &&
!(attrs & kNtFileAttributeDirectory)) {
return true;
}
}
return false;
}
textwindows dontinline int64_t __fix_enotdir3(int64_t rc, char16_t *path1,
char16_t *path2) {
if (rc == -1 && (errno == kNtErrorPathNotFound || // Windows returns ENOTDIR
errno == kNtErrorInvalidName)) { // e.g. has trailing slash
bool isdir = false;
if ((!path1 || !(isdir |= SubpathExistsThatsNotDirectory(path1))) &&
(!path2 || !(isdir |= SubpathExistsThatsNotDirectory(path2)))) {
errno = kNtErrorFileNotFound; // ENOENT
} else if (isdir) {
errno = kNtErrorPathNotFound; // ENOTDIR
}
}
return rc;
}
// WIN32 doesn't distinguish between ENOTDIR and ENOENT. UNIX strictly
// requires that a directory component *exists* but is not a directory
// whereas WIN32 will return ENOTDIR if a dir label simply isn't found
//
// - ENOTDIR: A component used as a directory in pathname is not, in
// fact, a directory. -or- pathname is relative and dirfd is a file
// descriptor referring to a file other than a directory.
//
// - ENOENT: A directory component in pathname does not exist or is a
// dangling symbolic link.
//
textwindows int64_t __fix_enotdir(int64_t rc, char16_t *path) {
return __fix_enotdir3(rc, path, 0);
}