chdir(2) [linux man page]

CHDIR(2)						     Linux Programmer's Manual							  CHDIR(2)

NAME

       chdir, fchdir - change working directory

SYNOPSIS

       #include <unistd.h>

       int chdir(const char *path);
       int fchdir(int fd);

   Feature Test Macro Requirements for glibc (see feature_test_macros(7)):

       fchdir():
	   Since glibc 2.12:
	       _BSD_SOURCE || _XOPEN_SOURCE >= 500 || _XOPEN_SOURCE && _XOPEN_SOURCE_EXTENDED || _POSIX_C_SOURCE >= 200809L
	   Before glibc 2.12:
	       _BSD_SOURCE || _XOPEN_SOURCE >= 500 _XOPEN_SOURCE && _XOPEN_SOURCE_EXTENDED

DESCRIPTION

       chdir() changes the current working directory of the calling process to the directory specified in path.

       fchdir() is identical to chdir(); the only difference is that the directory is given as an open file descriptor.

RETURN VALUE

       On success, zero is returned.  On error, -1 is returned, and errno is set appropriately.

ERRORS

       Depending on the file system, other errors can be returned.  The more general errors for chdir() are listed below:

       EACCES Search permission is denied for one of the components of path.  (See also path_resolution(7).)

       EFAULT path points outside your accessible address space.

       EIO    An I/O error occurred.

       ELOOP  Too many symbolic links were encountered in resolving path.

       ENAMETOOLONG
	      path is too long.

       ENOENT The file does not exist.

       ENOMEM Insufficient kernel memory was available.

       ENOTDIR
	      A component of path is not a directory.

       The general errors for fchdir() are listed below:

       EACCES Search permission was denied on the directory open on fd.

       EBADF  fd is not a valid file descriptor.

CONFORMING TO

       SVr4, 4.4BSD, POSIX.1-2001.

NOTES

       The current working directory is the starting point for interpreting relative pathnames (those not starting with '/').

       A  child  process  created via fork(2) inherits its parent's current working directory.	The current working directory is left unchanged by
       execve(2).

       The prototype for fchdir() is only available if _BSD_SOURCE is defined, or _XOPEN_SOURCE is defined with the value 500.

SEE ALSO

       chroot(2), getcwd(3), path_resolution(7)

COLOPHON

       This page is part of release 3.27 of the Linux man-pages project.  A description of the project, and information about reporting bugs,  can
       be found at http://www.kernel.org/doc/man-pages/.

Linux								    2010-09-20								  CHDIR(2)

Check Out this Related Man Page

CHDIR(2)							System Calls Manual							  CHDIR(2)

NAME

       chdir, fchdir - change current working directory

SYNOPSIS

       chdir(path)
       char *path;

       fchdir(fd)
       int fd;

DESCRIPTION

       The  path  argument  points  to the pathname of a directory.  The fd argument is a file descriptor which references a directory.  The chdir
       function causes this directory to become the current working directory, the starting point for path names not beginning with ``/''.

       The fchdir function causes the directory referenced by fd to become the current working directory, the starting point for path searches	of
       pathnames not beginning with a slahs, '/'.

       In order for a directory to become the current directory, a process must have execute (search) access to the directory.

RETURN VALUE

       Upon successful completion, a value of 0 is returned.  Otherwise, a value of -1 is returned and errno is set to indicate the error.

ERRORS

       Chdir will fail and the current working directory will be unchanged if one or more of the following are true:

       [ENOTDIR]      A component of the path prefix is not a directory.

       [EINVAL]       The pathname contains a character with the high-order bit set.

       [ENAMETOOLONG] A component of a pathname exceeded 63 characters, or an entire path name exceeded 255 characters.

       [ENOENT]       The named directory does not exist.

       [ELOOP]	      Too many symbolic links were encountered in translating the pathname.

       [EACCES]       Search permission is denied for any component of the path name.

       [EFAULT]       Path points outside the process's allocated address space.

       [EIO]	      An I/O error occurred while reading from or writing to the file system.

       Fchdir will fail and the current working directory will be unchanged if one or more of the following are true:

       [EACCES]       Search permission is denied for the directory referenced by the file descriptor.

       [ENOTDIR]      The file descriptor fd does not reference a directory.

       [EBADF]	      The argument fd is not a valid file descriptor.

SEE ALSO

       chroot(2)

4th Berkeley Distribution					  April 21, 1994							  CHDIR(2)

Linux and UNIX Man Pages

chdir(2) [linux man page]

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