1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
4 This file is part of systemd.
6 Copyright 2011 Lennart Poettering
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.
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.
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/>.
25 #include "logind-acl.h"
28 #include "sd-daemon.h"
30 int main(int argc, char *argv[]) {
32 const char *path = NULL, *seat;
33 char *p, *active_uid = NULL;
35 bool changed_acl = false;
37 log_set_target(LOG_TARGET_AUTO);
38 log_parse_environment();
41 if (argc < 2 || argc > 3) {
42 log_error("This program expects one or two arguments.");
47 /* Make sure we don't muck around with ACLs the system is not
53 seat = argc < 3 || isempty(argv[2]) ? "seat0" : argv[2];
55 p = strappend("/run/systemd/seats/", seat);
57 log_error("Out of memory.");
62 r = parse_env_file(p, NEWLINE,
63 "ACTIVE_UID", &active_uid,
68 if (errno == ENOENT) {
73 log_error("Failed to read seat data for %s: %s", seat, strerror(-r));
78 r = safe_atolu(active_uid, &ul);
80 log_error("Failed to parse active UID value %s: %s", active_uid, strerror(-r));
84 r = devnode_acl(path, true, false, 0, true, (uid_t) ul);
86 log_error("Failed to apply ACL on %s: %s", path, strerror(-r));
96 if (path && !changed_acl) {
98 /* Better be safe that sorry and reset ACL */
100 k = devnode_acl(path, true, false, 0, false, 0);
102 log_error("Failed to apply ACL on %s: %s", path, strerror(-k));
110 return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;