/src/samba/lib/util/util_id.c
Line | Count | Source |
1 | | /* |
2 | | Unix SMB/CIFS implementation. |
3 | | |
4 | | Helper routines for uid and gid arrays |
5 | | |
6 | | Copyright (C) Guenther Deschner 2009 |
7 | | |
8 | | This program is free software; you can redistribute it and/or modify |
9 | | it under the terms of the GNU General Public License as published by |
10 | | the Free Software Foundation; either version 3 of the License, or |
11 | | (at your option) any later version. |
12 | | |
13 | | This program is distributed in the hope that it will be useful, |
14 | | but WITHOUT ANY WARRANTY; without even the implied warranty of |
15 | | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
16 | | GNU General Public License for more details. |
17 | | |
18 | | You should have received a copy of the GNU General Public License |
19 | | along with this program. If not, see <http://www.gnu.org/licenses/>. |
20 | | */ |
21 | | |
22 | | #include "replace.h" |
23 | | #include "lib/util/samba_util.h" |
24 | | |
25 | | /**************************************************************************** |
26 | | Add a gid to an array of gids if it's not already there. |
27 | | ****************************************************************************/ |
28 | | |
29 | | bool add_gid_to_array_unique(TALLOC_CTX *mem_ctx, gid_t gid, |
30 | | gid_t **gids, uint32_t *num_gids) |
31 | 0 | { |
32 | 0 | uint32_t i; |
33 | |
|
34 | 0 | if ((*num_gids != 0) && (*gids == NULL)) { |
35 | | /* |
36 | | * A former call to this routine has failed to allocate memory |
37 | | */ |
38 | 0 | return false; |
39 | 0 | } |
40 | | |
41 | 0 | for (i=0; i<*num_gids; i++) { |
42 | 0 | if ((*gids)[i] == gid) { |
43 | 0 | return true; |
44 | 0 | } |
45 | 0 | } |
46 | | |
47 | 0 | *gids = talloc_realloc(mem_ctx, *gids, gid_t, *num_gids+1); |
48 | 0 | if (*gids == NULL) { |
49 | 0 | *num_gids = 0; |
50 | 0 | return false; |
51 | 0 | } |
52 | | |
53 | 0 | (*gids)[*num_gids] = gid; |
54 | 0 | *num_gids += 1; |
55 | 0 | return true; |
56 | 0 | } |
57 | | |
58 | | /**************************************************************************** |
59 | | Add a uid to an array of uids if it's not already there. |
60 | | ****************************************************************************/ |
61 | | |
62 | | bool add_uid_to_array_unique(TALLOC_CTX *mem_ctx, uid_t uid, |
63 | | uid_t **uids, uint32_t *num_uids) |
64 | 0 | { |
65 | 0 | uint32_t i; |
66 | |
|
67 | 0 | if ((*num_uids != 0) && (*uids == NULL)) { |
68 | | /* |
69 | | * A former call to this routine has failed to allocate memory |
70 | | */ |
71 | 0 | return false; |
72 | 0 | } |
73 | | |
74 | 0 | for (i=0; i<*num_uids; i++) { |
75 | 0 | if ((*uids)[i] == uid) { |
76 | 0 | return true; |
77 | 0 | } |
78 | 0 | } |
79 | | |
80 | 0 | *uids = talloc_realloc(mem_ctx, *uids, uid_t, *num_uids+1); |
81 | 0 | if (*uids == NULL) { |
82 | 0 | *num_uids = 0; |
83 | 0 | return false; |
84 | 0 | } |
85 | | |
86 | 0 | (*uids)[*num_uids] = uid; |
87 | 0 | *num_uids += 1; |
88 | | return true; |
89 | 0 | } |