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authorLennart Poettering <lennart@poettering.net>2011-12-31 19:44:52 +0100
committerLennart Poettering <lennart@poettering.net>2011-12-31 19:45:41 +0100
commit927f62bd54ee1c70b1c855b7def84169b950b5d0 (patch)
tree669b798001f925858dd568129420f8c835ac4ca5 /src/login
parente5e83e8362e946890ac991fc86a2c5869f9befdf (diff)
login: move systemd-user-sessions.service into login/, too
Diffstat (limited to 'src/login')
-rw-r--r--src/login/user-sessions.c100
1 files changed, 100 insertions, 0 deletions
diff --git a/src/login/user-sessions.c b/src/login/user-sessions.c
new file mode 100644
index 0000000000..df46b76c87
--- /dev/null
+++ b/src/login/user-sessions.c
@@ -0,0 +1,100 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+/***
+ This file is part of systemd.
+
+ Copyright 2010 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <string.h>
+#include <unistd.h>
+#include <errno.h>
+
+#include "log.h"
+#include "util.h"
+#include "cgroup-util.h"
+
+int main(int argc, char*argv[]) {
+ int ret = EXIT_FAILURE;
+
+ if (argc != 2) {
+ log_error("This program requires one argument.");
+ return EXIT_FAILURE;
+ }
+
+ log_set_target(LOG_TARGET_SYSLOG_OR_KMSG);
+ log_parse_environment();
+ log_open();
+
+ umask(0022);
+
+ if (streq(argv[1], "start")) {
+ int q = 0, r = 0;
+
+ if (unlink("/run/nologin") < 0 && errno != ENOENT) {
+ log_error("Failed to remove /run/nologin file: %m");
+ r = -errno;
+ }
+
+ if (unlink("/etc/nologin") < 0 && errno != ENOENT) {
+
+ /* If the file doesn't exist and /etc simply
+ * was read-only (in which case unlink()
+ * returns EROFS even if the file doesn't
+ * exist), don't complain */
+
+ if (errno != EROFS || access("/etc/nologin", F_OK) >= 0) {
+ log_error("Failed to remove /etc/nologin file: %m");
+ q = -errno;
+ }
+ }
+
+ if (r < 0 || q < 0)
+ goto finish;
+
+ } else if (streq(argv[1], "stop")) {
+ int r, q;
+ char *cgroup_user_tree = NULL;
+
+ if ((r = write_one_line_file_atomic("/run/nologin", "System is going down.")) < 0)
+ log_error("Failed to create /run/nologin: %s", strerror(-r));
+
+ if ((q = cg_get_user_path(&cgroup_user_tree)) < 0) {
+ log_error("Failed to determine use path: %s", strerror(-q));
+ goto finish;
+ }
+
+ q = cg_kill_recursive_and_wait(SYSTEMD_CGROUP_CONTROLLER, cgroup_user_tree, true);
+ free(cgroup_user_tree);
+
+ if (q < 0) {
+ log_error("Failed to kill sessions: %s", strerror(-q));
+ goto finish;
+ }
+
+ if (r < 0)
+ goto finish;
+
+ } else {
+ log_error("Unknown verb %s.", argv[1]);
+ goto finish;
+ }
+
+ ret = EXIT_SUCCESS;
+
+finish:
+ return ret;
+}