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Commit | Line | Data |
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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 | */ | |
22 | void 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 | */ | |
28 | void 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 | */ | |
34 | void permanently_set_uid(uid_t uid); | |
35 | ||
36 | #endif /* UIDSWAP_H */ |