int rfio_chown (const char *path,uid_t new_uid,gid_t new_gid)
sets the owner and the group of a directory/file to the numeric values in
is specified as -1,
does not change the corresponding ID of the file.
specifies the logical pathname relative to the current directory or
the full pathname.
The effective user ID of the process must match the owner of the file or be
This routine returns 0 if the operation was successful or -1 if the operation
failed. In the latter case,
is set appropriately.
The effective user ID does not match the owner of the file and is not super-user.
The named file/directory does not exist or is a null pathname.
Search permission is denied on a component of the
prefix or write permission on the file itself is denied.
is a NULL pointer.
A component of
prefix is not a directory.
The length of
or the length of a