mirror of
https://github.com/jart/cosmopolitan.git
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2046c0d2ae
- Expand redbean UNIX module - Expand redbean documentation - Ensure Lua copyright is embedded in binary - Increase the PATH_MAX limit especially on NT - Use column major sorting for linenoise completions - Fix some suboptimalities in redbean's new UNIX API - Figured out right flags for Multics newline in raw mode
82 lines
3.5 KiB
C
82 lines
3.5 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/macros.internal.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/process.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/errfuns.h"
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textwindows int sys_chdir_nt(const char *path) {
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uint32_t n;
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int e, ms, err, len;
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char16_t path16[PATH_MAX + 1], var[4];
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if ((len = __mkntpath(path, path16)) == -1) return -1;
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if (!len) return enoent();
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if (len && path16[len - 1] != u'\\') {
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if (len + 2 > PATH_MAX) return enametoolong();
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path16[len + 0] = u'\\';
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path16[len + 1] = u'\0';
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}
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/*
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* chdir() seems flaky on windows 7
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* in a similar way to rmdir() sigh
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*/
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for (err = errno, ms = 1;; ms *= 2) {
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if (SetCurrentDirectory(path16)) {
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/*
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* Now we need to set a magic environment variable.
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*/
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if ((n = GetCurrentDirectory(ARRAYLEN(path16), path16))) {
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if (n < ARRAYLEN(path16)) {
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if (!((path16[0] == '/' && path16[1] == '/') ||
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(path16[0] == '\\' && path16[1] == '\\'))) {
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var[0] = '=';
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var[1] = path16[0];
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var[2] = ':';
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var[3] = 0;
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if (!SetEnvironmentVariable(var, path16)) {
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return __winerr();
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}
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}
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return 0;
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} else {
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return enametoolong();
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}
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} else {
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return __winerr();
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}
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} else {
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e = GetLastError();
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if (ms <= 512 &&
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(e == kNtErrorFileNotFound || e == kNtErrorAccessDenied)) {
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Sleep(ms);
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errno = err;
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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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}
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return __fix_enotdir(-1, path16);
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}
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