DragonFly On-Line Manual Pages

CHDIR(2)                 DragonFly System Calls Manual                CHDIR(2)

NAME
     chdir, fchdir -- change current working directory

LIBRARY
     Standard C Library (libc, -lc)

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 direc-
     tory, 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 path-
     names 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, the value 0 is returned; otherwise the
     value -1 is returned and the global variable 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 255 characters, or
                        an entire path name exceeded 1023 characters.

     [ENOENT]           The named directory does not exist.

     [ELOOP]            Too many symbolic links were encountered in translat-
                        ing 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 refer-
                        enced 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() function call is expected to conform to ISO/IEC 9945-1:1990
     (``POSIX.1'').

HISTORY
     A chdir() function call appeared in Version 7 AT&T UNIX.  The fchdir()
     function call appeared in 4.2BSD.

DragonFly 3.5                  December 11, 1993                 DragonFly 3.5