chdir(2) [ultrix man page]

chdir(2)							System Calls Manual							  chdir(2)

Name
       chdir - change working directory

Syntax
       chdir(path)
       char *path;

Description
       The  path  is  the  pathname  of  a directory.  The system call causes this directory to become the current working directory, which is the
       starting point for pathnames that do not begin at the root directory (/).

       For a directory to become the current directory, the 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.

Environment
       Differs from the System V definition in that ELOOP is a possible error condition.

Diagnostics
       The system call fails and the current working directory is unchanged under the following conditions:

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

       [ENAMETOOLONG] A component of a pathname exceeds 255 characters, or an entire path name exceeds 1023 characters.

       [ENOENT]       The named directory does not exist or the path points to an empty string and  the  environment  defined  is  POSIX  or  SYS-
		      TEM_FIVE.

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

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

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

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

       [ESTALE]       The  file  handle  given in the argument was invalid.  The file referred to by that file handle no longer exists or has been
		      revoked.

       [ETIMEDOUT]    A connect request or remote file operation failed because the connected party did not properly respond  after  a	period	of
		      time that is dependent on the communications protocol.

See Also
       chroot(2)

																	  chdir(2)

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 fd);

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 fd 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

     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.

     [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.

     [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 does not reference a directory.

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

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