uidswap.h revision 57429 
1/*
2 *
3 * uidswap.h
4 *
5 * Author: Tatu Ylonen <ylo@cs.hut.fi>
6 *
7 * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
8 *                    All rights reserved
9 *
10 * Created: Sat Sep  9 01:43:15 1995 ylo
11 * Last modified: Sat Sep  9 02:34:04 1995 ylo
12 *
13 */
14
15#ifndef UIDSWAP_H
16#define UIDSWAP_H
17
18/*
19 * Temporarily changes to the given uid.  If the effective user id is not
20 * root, this does nothing.  This call cannot be nested.
21 */
22void    temporarily_use_uid(uid_t uid);
23
24/*
25 * Restores the original effective user id after temporarily_use_uid().
26 * This should only be called while temporarily_use_uid is effective.
27 */
28void    restore_uid();
29
30/*
31 * Permanently sets all uids to the given uid.  This cannot be called while
32 * temporarily_use_uid is effective.  This must also clear any saved uids.
33 */
34void    permanently_set_uid(uid_t uid);
35
36#endif				/* UIDSWAP_H */
37