mirror of
https://github.com/jart/cosmopolitan.git
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65 lines
3 KiB
C
65 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/internal.h"
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#include "libc/errno.h"
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#include "libc/nt/errors.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/nt/synchronization.h"
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#include "libc/sysv/consts/at.h"
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static textwindows int sys_unlink_nt(const char16_t *path) {
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if (DeleteFile(path)) {
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return 0;
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} else {
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return __winerr();
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}
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}
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static textwindows int sys_rmdir_nt(const char16_t *path) {
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int e, ms;
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for (ms = 1;; ms *= 2) {
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if (RemoveDirectory(path)) return 0;
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/*
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* Files can linger, for absolutely no reason.
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* Possibly some Windows Defender bug on Win7.
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* Sleep for up to one second w/ expo backoff.
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* Alternative is use Microsoft internal APIs.
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* Never could have imagined it'd be this bad.
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*/
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if ((e = GetLastError()) == kNtErrorDirNotEmpty && ms <= 512) {
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Sleep(ms);
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continue;
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} else {
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break;
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}
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}
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errno = e;
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return -1;
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}
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textwindows int sys_unlinkat_nt(int dirfd, const char *path, int flags) {
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uint16_t path16[PATH_MAX];
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if (__mkntpathat(dirfd, path, 0, path16) == -1) return -1;
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if (flags & AT_REMOVEDIR) {
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return sys_rmdir_nt(path16);
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} else {
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return sys_unlink_nt(path16);
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}
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}
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