RMDIR(2) BSD Programmer's Manual RMDIR(2)
rmdir - remove a directory file
rmdir(const char *path);
Rmdir() removes a directory file whose name is given by path. The direc-
tory must not have any entries other than `.' and `..'.
A 0 is returned if the remove succeeds; otherwise a -1 is returned and an
error code is stored in the global location errno.
The named file is removed unless:
[ENOTDIR] A component of the path is not a directory.
[EINVAL] The pathname contains a character with the high-order bit
[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
[ENOTEMPTY] The named directory contains files other than `.' and
`..' in it.
[EACCES] Search permission is denied for a component of the path
[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 directory to be removed are owned by the effective
[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
[EFAULT] Path points outside the process's allocated address
The rmdir function call appeared in 4.2BSD.