bsd man page for rmdir

RMDIR(2)							System Calls Manual							  RMDIR(2)

NAME
       rmdir - remove a directory file

SYNOPSIS
       rmdir(path)
       char *path;

DESCRIPTION
       Rmdir removes a directory file whose name is given by path.  The directory must not have any entries other than "." and "..".

RETURN VALUE
       A 0 is returned if the remove succeeds; otherwise a -1 is returned and an error code is stored in the global location errno.

ERRORS
       The named file is removed unless one or more of the following are true:

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

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

       [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 translating the pathname.

       [ENOTEMPTY]    The named directory contains files other than ``.'' and ``..'' in it.

       [EACCES]       Search permission is denied for a component of the path prefix.

       [EACCES]       Write permission is denied on the directory containing the link to be removed.

       [EPERM]	      The  directory  containing the directory to be removed is marked sticky, and neither the containing directory nor the direc-
		      tory to be removed are owned by the effective user ID.

       [EBUSY]	      The directory to be removed is the mount point for a mounted file system.

       [EIO]	      An I/O error occurred while deleting the directory entry or deallocating the inode.

       [EROFS]	      The directory entry to be removed resides on a read-only file system.

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

SEE ALSO
       mkdir(2), unlink(2)

4.2 Berkeley Distribution					  August 26, 1985							  RMDIR(2)