Linux man pages : rmdir (2)
RMDIR(2) Linux Programmer's Manual RMDIR(2)
rmdir - delete a directory
int rmdir(const char *pathname);
rmdir deletes a directory, which must be empty.
On success, zero is returned. On error, -1 is returned, and errno is
EPERM The filesystem containing pathname does not support the removal
EFAULT pathname points outside your accessible address space.
EACCES Write access to the directory containing pathname was not
allowed for the process's effective uid, or one of the directo-
ries in pathname did not allow search (execute) permission.
EPERM The directory containing pathname has the sticky-bit (S_ISVTX)
set and the process's effective uid is neither the uid of the
file to be deleted nor that of the directory containing it.
pathname was too long.
ENOENT A directory component in pathname does not exist or is a dan-
gling symbolic link.
pathname, or a component used as a directory in pathname, is
not, in fact, a directory.
pathname contains entries other than . and .. .
EBUSY pathname is the current working directory or root directory of
ENOMEM Insufficient kernel memory was available.
EROFS pathname refers to a file on a read-only filesystem.
ELOOP Too many symbolic links were encountered in resolving pathname.
SVr4, SVID, POSIX, BSD 4.3
Infelicities in the protocol underlying NFS can cause the unexpected
disappearance of directories which are still being used.
rename(2), mkdir(2), chdir(2), unlink(2), rmdir(1), rm(1)
Linux 0.99.7 1993-07-24 RMDIR(2)