-#ifndef UIDSWAP_H
-#define UIDSWAP_H
-
-/*
- * Temporarily changes to the given uid. If the effective user id is not
- * root, this does nothing. This call cannot be nested.
- */
-void temporarily_use_uid(uid_t uid);
-
-/*
- * Restores the original effective user id after temporarily_use_uid().
- * This should only be called while temporarily_use_uid is effective.
- */
-void restore_uid(void);
-
-/*
- * Permanently sets all uids to the given uid. This cannot be called while
- * temporarily_use_uid is effective. This must also clear any saved uids.
- */
-void permanently_set_uid(uid_t uid);
-
-#endif /* UIDSWAP_H */
+void temporarily_use_uid(struct passwd *);
+void restore_uid(void);
+void permanently_set_uid(struct passwd *);
+void permanently_drop_suid(uid_t);