The rmdir() function removes the directory named by the path name pointed to by path. The directory must not have any entries other than "." and "..".

If the directory's link count becomes zero and no process has the directory open, the space occupied by the directory is freed and the directory is no longer accessible. If one or more processes have the directory open when the last link is removed, the "." and ".." entries, if present, are removed before rmdir() returns and no new entries may be created in the directory, but the directory is not removed until all references to the directory have been closed.

Upon successful completion rmdir() marks for update the st_ctime and st_mtime fields of the parent directory.

Upon successful completion, 0 is returned. Otherwise, -1 is returned, errno is set to indicate the error, and the named directory is not changed.

The rmdir() function will fail if:

EACCES

Search permission is denied for a component of the path prefix; write permission is denied on the directory containing the directory to be removed; the parent directory has the S_ISVTX variable set and is not owned by the user; the directory is not owned by the user and is not writable by the user; or the user is not a super-user.

EBUSY

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

EEXIST

The directory contains entries other than those for "." and "..".

EFAULT

The path argument points to an illegal address.

EINVAL

The directory to be removed is the current directory, or the final component of path is ".".

EIO

An I/O error occurred while accessing the file system.

ELOOP

Too many symbolic links were encountered in translating path.

ENAMETOOLONG

The length of the path argument exceeds PATH_MAX, or the length of a path component exceeds NAME_MAX while _POSIX_NO_TRUNC is in effect.

ENOENT

The named directory does not exist or is the null pathname.

ENOLINK

The path argument points to a remote machine, and the connection to that machine is no longer active.

ENOTDIR

A component of the path prefix is not a directory.

EROFS

The directory entry to be removed is part of a read-only file system.

See attributes(5) for descriptions of the following attributes:

mkdir(1), rm(1), mkdir(2), attributes(5)