CHDIR(2)						      BSD System Calls Manual							  CHDIR(2)

NAME

     chdir, fchdir -- change current working directory

SYNOPSIS

     #include <unistd.h>

     int
     chdir(const char *path);

     int
     fchdir(int fildes);

DESCRIPTION

     The path argument points to the pathname of a directory.  The chdir() function causes the named directory to become the current working
     directory, that is, the starting point for path searches of pathnames not beginning with a slash, '/'.

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

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

RETURN VALUES

     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

     The chdir() system call 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 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.

     [ELOOP]		Too many symbolic links were encountered in translating the pathname.  This is taken to be indicative of a looping sym-
			bolic link.

     [ENAMETOOLONG]	A component of a pathname exceeded {NAME_MAX} characters, or an entire path name exceeded {PATH_MAX} characters.

     [ENOENT]		The named directory does not exist.

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

     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.

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

     [EINTR]		fchdir() was interrupted by a signal.

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

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

SEE ALSO

     chroot(2)

STANDARDS

     The chdir() is expected to conform to IEEE Std 1003.1-1988 (``POSIX.1'').

HISTORY

     The fchdir() function call appeared in 4.2BSD.

4th Berkeley Distribution					 December 11, 1993					 4th Berkeley Distribution