uidswap.h revision 65668 
1/*
2 * Author: Tatu Ylonen <ylo@cs.hut.fi>
3 * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
4 *                    All rights reserved
5 *
6 * As far as I am concerned, the code I have written for this software
7 * can be used freely for any purpose.  Any derived versions of this
8 * software must be clearly marked as such, and if the derived work is
9 * incompatible with the protocol description in the RFC file, it must be
10 * called by a name other than "ssh" or "Secure Shell".
11 */
12
13#ifndef UIDSWAP_H
14#define UIDSWAP_H
15
16/*
17 * Temporarily changes to the given uid.  If the effective user id is not
18 * root, this does nothing.  This call cannot be nested.
19 */
20void    temporarily_use_uid(uid_t uid);
21
22/*
23 * Restores the original effective user id after temporarily_use_uid().
24 * This should only be called while temporarily_use_uid is effective.
25 */
26void    restore_uid();
27
28/*
29 * Permanently sets all uids to the given uid.  This cannot be called while
30 * temporarily_use_uid is effective.  This must also clear any saved uids.
31 */
32void    permanently_set_uid(uid_t uid);
33
34#endif				/* UIDSWAP_H */
35