mirror of
https://github.com/jart/cosmopolitan.git
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66 lines
3.3 KiB
C
66 lines
3.3 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/syscall-nt.internal.h"
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#include "libc/calls/syscall-sysv.internal.h"
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#include "libc/dce.h"
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#include "libc/errno.h"
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#include "libc/intrin/asan.internal.h"
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#include "libc/intrin/strace.internal.h"
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#include "libc/intrin/weaken.h"
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#include "libc/runtime/runtime.h"
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#include "libc/runtime/zipos.internal.h"
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#include "libc/sysv/errfuns.h"
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/**
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* Sets current directory.
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*
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* The current directory is shared by all threads in a process. This
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* does not update the `PWD` environment variable.
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*
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* @return 0 on success, or -1 w/ errno
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* @raise ELOOP if a loop was detected resolving components of `path`
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* @raise EACCES if search permission was denied on directory
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* @raise ENOTDIR if component of `path` isn't a directory
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* @raise ENOMEM if insufficient memory was available
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* @raise EFAULT if `path` points to invalid memory
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* @raise ENOTSUP if `path` is a `/zip/...` file
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* @raise ENAMETOOLONG if `path` was too long
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* @raise ENOENT if `path` doesn't exist
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* @raise EIO if an i/o error happened
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* @asyncsignalsafe
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* @see fchdir()
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*/
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int chdir(const char *path) {
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int rc;
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struct ZiposUri zipname;
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GetProgramExecutableName(); // XXX: ugly workaround
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if (!path || (IsAsan() && !__asan_is_valid_str(path))) {
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rc = efault();
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} else if (_weaken(__zipos_parseuri) &&
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_weaken(__zipos_parseuri)(path, &zipname) != -1) {
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rc = enotsup();
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} else if (!IsWindows()) {
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rc = sys_chdir(path);
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} else {
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rc = sys_chdir_nt(path);
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}
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STRACE("%s(%#s) → %d% m", "chdir", path, rc);
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return rc;
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}
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