filename based operations on NAME. If access control lists are not
available, fchmod the target file to MODE. Also sets the
non-permission bits of the destination file (S_ISUID, S_ISGID, S_ISVTX)
- to those from MODE if any are set. System call return value
- semantics. */
+ to those from MODE if any are set.
+ Return 0 if successful. Return -1 and set errno upon failure. */
int
qset_acl (char const *name, int desc, mode_t mode)