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5eda94dd LP |
1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
2 | ||
3 | /*** | |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2011 Lennart Poettering | |
7 | ||
8 | systemd is free software; you can redistribute it and/or modify it | |
9 | under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2 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 | General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
20 | ***/ | |
21 | ||
22 | #include <errno.h> | |
23 | #include <string.h> | |
24 | ||
25 | #include "logind-acl.h" | |
26 | #include "util.h" | |
27 | #include "log.h" | |
d40c9816 | 28 | #include "sd-daemon.h" |
3d7d60c8 | 29 | #include "sd-login.h" |
5eda94dd LP |
30 | |
31 | int main(int argc, char *argv[]) { | |
32 | int r; | |
501c92c4 | 33 | const char *path = NULL, *seat; |
f5f32cd7 | 34 | bool changed_acl = false; |
3d7d60c8 | 35 | uid_t uid; |
5eda94dd LP |
36 | |
37 | log_set_target(LOG_TARGET_AUTO); | |
38 | log_parse_environment(); | |
39 | log_open(); | |
40 | ||
4c12626c LP |
41 | umask(0022); |
42 | ||
0b191e60 LP |
43 | if (argc < 2 || argc > 3) { |
44 | log_error("This program expects one or two arguments."); | |
5eda94dd LP |
45 | r = -EINVAL; |
46 | goto finish; | |
47 | } | |
48 | ||
d40c9816 LP |
49 | /* Make sure we don't muck around with ACLs the system is not |
50 | * running systemd. */ | |
51 | if (!sd_booted()) | |
52 | return 0; | |
53 | ||
5eda94dd | 54 | path = argv[1]; |
53907215 | 55 | seat = argc < 3 || isempty(argv[2]) ? "seat0" : argv[2]; |
5eda94dd | 56 | |
3d7d60c8 LP |
57 | r = sd_seat_get_active(seat, NULL, &uid); |
58 | if (r == -ENOENT) { | |
59 | /* No active session on this seat */ | |
60 | r = 0; | |
61 | goto finish; | |
62 | } else if (r < 0) { | |
63 | log_error("Failed to determine active user on seat %s.", seat); | |
5eda94dd LP |
64 | goto finish; |
65 | } | |
66 | ||
3d7d60c8 | 67 | r = devnode_acl(path, true, false, 0, true, uid); |
5eda94dd | 68 | if (r < 0) { |
3d7d60c8 | 69 | log_error("Failed to apply ACL on %s: %s", path, strerror(-r)); |
5eda94dd LP |
70 | goto finish; |
71 | } | |
72 | ||
3d7d60c8 | 73 | changed_acl = true; |
5eda94dd LP |
74 | r = 0; |
75 | ||
76 | finish: | |
f5f32cd7 LP |
77 | if (path && !changed_acl) { |
78 | int k; | |
79 | /* Better be safe that sorry and reset ACL */ | |
80 | ||
81 | k = devnode_acl(path, true, false, 0, false, 0); | |
82 | if (k < 0) { | |
83 | log_error("Failed to apply ACL on %s: %s", path, strerror(-k)); | |
84 | if (r >= 0) | |
85 | r = k; | |
86 | } | |
87 | } | |
88 | ||
5eda94dd LP |
89 | return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS; |
90 | } |