diff options
Diffstat (limited to 'nuttx/libc/unistd/lib_chdir.c')
| -rw-r--r-- | nuttx/libc/unistd/lib_chdir.c | 179 |
1 files changed, 0 insertions, 179 deletions
diff --git a/nuttx/libc/unistd/lib_chdir.c b/nuttx/libc/unistd/lib_chdir.c deleted file mode 100644 index 8953fb19b..000000000 --- a/nuttx/libc/unistd/lib_chdir.c +++ /dev/null @@ -1,179 +0,0 @@ -/**************************************************************************** - * libc/unistd/lib_chdir.c - * - * Copyright (C) 2008-2009, 2011 Gregory Nutt. All rights reserved. - * Author: Gregory Nutt <gnutt@nuttx.org> - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the - * distribution. - * 3. Neither the name NuttX nor the names of its contributors may be - * used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS - * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE - * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, - * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, - * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS - * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED - * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN - * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGE. - * - ****************************************************************************/ - -/**************************************************************************** - * Included Files - ****************************************************************************/ - -#include <nuttx/config.h> - -#include <sys/stat.h> -#include <stdlib.h> -#include <string.h> -#include <unistd.h> -#include <errno.h> - -#include "lib_internal.h" - -#if CONFIG_NFILE_DESCRIPTORS > 0 && !defined(CONFIG_DISABLE_ENVIRON) - -/**************************************************************************** - * Public Variables - ****************************************************************************/ - -/**************************************************************************** - * Private Functions - ****************************************************************************/ - -/**************************************************************************** - * Name: _trimdir - ****************************************************************************/ - -#if 0 -static inline void _trimdir(char *path) -{ - /* Skip any trailing '/' characters (unless it is also the leading '/') */ - - int len = strlen(path) - 1; - while (len > 0 && path[len] == '/') - { - path[len] = '\0'; - len--; - } -} -#else -# define _trimdir(p) -#endif - -/**************************************************************************** - * Public Functions - ****************************************************************************/ - -/**************************************************************************** - * Name: chdir - * - * Description: - * The chdir() function causes the directory named by the pathname pointed - * to by the 'path' argument to become the current working directory; that - * is, the starting point for path searches for pathnames not beginning - * with '/'. - * - * Input Parmeters: - * path - A pointer to a directory to use as the new current working - * directory - * - * Returned Value: - * 0(OK) on success; -1(ERROR) on failure with errno set appropriately: - * - * EACCES - * Search permission is denied for any component of the pathname. - * ELOOP - * A loop exists in symbolic links encountered during resolution of the - * 'path' argument OR more that SYMLOOP_MAX symbolic links in the - * resolution of the 'path' argument. - * ENAMETOOLONG - * The length of the path argument exceeds PATH_MAX or a pathname component - * is longer than NAME_MAX. - * ENOENT - * A component of 'path' does not name an existing directory or path is - * an empty string. - * ENOTDIR - * A component of the pathname is not a directory. - * - ****************************************************************************/ - -int chdir(FAR const char *path) -{ - struct stat buf; - char *oldpwd; - char *alloc; - int err; - int ret; - - /* Verify the input parameters */ - - if (!path) - { - err = ENOENT; - goto errout; - } - - /* Verify that 'path' refers to a directory */ - - ret = stat(path, &buf); - if (ret != 0) - { - err = ENOENT; - goto errout; - } - - /* Something exists here... is it a directory? */ - - if (!S_ISDIR(buf.st_mode)) - { - err = ENOTDIR; - goto errout; - } - - /* Yes, it is a directory. Remove any trailing '/' characters from the path */ - - _trimdir(path); - - /* Replace any preceding OLDPWD with the current PWD (this is to - * support 'cd -' in NSH) - */ - - sched_lock(); - oldpwd = getenv("PWD"); - if (!oldpwd) - { - oldpwd = CONFIG_LIB_HOMEDIR; - } - - alloc = strdup(oldpwd); /* kludge needed because environment is realloc'ed */ - setenv("OLDPWD", alloc, TRUE); - lib_free(alloc); - - /* Set the cwd to the input 'path' */ - - setenv("PWD", path, TRUE); - sched_unlock(); - return OK; - -errout: - set_errno(err); - return ERROR; -} -#endif /* CONFIG_NFILE_DESCRIPTORS && !CONFIG_DISABLE_ENVIRON */ |