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Damien Millerd4a8b7e1999-10-27 13:42:43 +10001/*
Damien Miller95def091999-11-25 00:26:21 +11002 * Author: Tatu Ylonen <ylo@cs.hut.fi>
Damien Miller95def091999-11-25 00:26:21 +11003 * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
4 * All rights reserved
Damien Miller4af51302000-04-16 11:18:38 +10005 *
Damien Millere4340be2000-09-16 13:29:08 +11006 * 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".
Damien Miller95def091999-11-25 00:26:21 +110011 */
Damien Millerd4a8b7e1999-10-27 13:42:43 +100012
13#ifndef UIDSWAP_H
14#define UIDSWAP_H
15
Damien Miller95def091999-11-25 00:26:21 +110016/*
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);
Damien Millerd4a8b7e1999-10-27 13:42:43 +100021
Damien Miller95def091999-11-25 00:26:21 +110022/*
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();
Damien Millerd4a8b7e1999-10-27 13:42:43 +100027
Damien Miller95def091999-11-25 00:26:21 +110028/*
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);
Damien Millerd4a8b7e1999-10-27 13:42:43 +100033
Damien Miller95def091999-11-25 00:26:21 +110034#endif /* UIDSWAP_H */