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db2df898 MP |
1 | #pragma once |
2 | ||
3 | /*** | |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2010 Lennart Poettering | |
7 | ||
8 | systemd is free software; you can redistribute it and/or modify it | |
9 | under the terms of the GNU Lesser General Public License as published by | |
10 | the Free Software Foundation; either version 2.1 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | systemd is distributed in the hope that it will be useful, but | |
14 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | Lesser General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU Lesser General Public License | |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
20 | ***/ | |
21 | ||
db2df898 | 22 | #include <stdbool.h> |
4c89c718 | 23 | #include <sys/types.h> |
db2df898 MP |
24 | |
25 | bool uid_is_valid(uid_t uid); | |
26 | ||
27 | static inline bool gid_is_valid(gid_t gid) { | |
28 | return uid_is_valid((uid_t) gid); | |
29 | } | |
30 | ||
31 | int parse_uid(const char *s, uid_t* ret_uid); | |
32 | ||
33 | static inline int parse_gid(const char *s, gid_t *ret_gid) { | |
34 | return parse_uid(s, (uid_t*) ret_gid); | |
35 | } | |
36 | ||
37 | char* getlogname_malloc(void); | |
38 | char* getusername_malloc(void); | |
39 | ||
40 | int get_user_creds(const char **username, uid_t *uid, gid_t *gid, const char **home, const char **shell); | |
41 | int get_group_creds(const char **groupname, gid_t *gid); | |
42 | ||
43 | char* uid_to_name(uid_t uid); | |
44 | char* gid_to_name(gid_t gid); | |
45 | ||
46 | int in_gid(gid_t gid); | |
47 | int in_group(const char *name); | |
48 | ||
49 | int get_home_dir(char **ret); | |
50 | int get_shell(char **_ret); | |
51 | ||
52 | int reset_uid_gid(void); | |
53 | ||
54 | int take_etc_passwd_lock(const char *root); | |
55 | ||
56 | #define UID_INVALID ((uid_t) -1) | |
57 | #define GID_INVALID ((gid_t) -1) | |
58 | ||
59 | /* The following macros add 1 when converting things, since UID 0 is a | |
60 | * valid UID, while the pointer NULL is special */ | |
61 | #define PTR_TO_UID(p) ((uid_t) (((uintptr_t) (p))-1)) | |
62 | #define UID_TO_PTR(u) ((void*) (((uintptr_t) (u))+1)) | |
63 | ||
64 | #define PTR_TO_GID(p) ((gid_t) (((uintptr_t) (p))-1)) | |
65 | #define GID_TO_PTR(u) ((void*) (((uintptr_t) (u))+1)) |