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authorLuke Shumaker <lukeshu@sbcglobal.net>2016-12-17 03:04:41 -0500
committerLuke Shumaker <lukeshu@sbcglobal.net>2016-12-17 03:04:41 -0500
commitfd6ea8a3f4999133f8ac036a23584c3e5f9e9b3f (patch)
tree6cdd53846655b04b178b4b8057c915c61a9cb525 /src/grp-utils/systemd-notify/notify.c
parent1841fdb0b10cb37b55d1af644a7e6edc4ab66cbd (diff)
./tools/notsd-move
Diffstat (limited to 'src/grp-utils/systemd-notify/notify.c')
-rw-r--r--src/grp-utils/systemd-notify/notify.c203
1 files changed, 203 insertions, 0 deletions
diff --git a/src/grp-utils/systemd-notify/notify.c b/src/grp-utils/systemd-notify/notify.c
new file mode 100644
index 0000000000..c347c110a9
--- /dev/null
+++ b/src/grp-utils/systemd-notify/notify.c
@@ -0,0 +1,203 @@
+/***
+ 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 Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <errno.h>
+#include <getopt.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include <systemd/sd-daemon.h>
+
+#include "systemd-basic/alloc-util.h"
+#include "systemd-basic/env-util.h"
+#include "systemd-basic/formats-util.h"
+#include "systemd-basic/log.h"
+#include "systemd-basic/parse-util.h"
+#include "systemd-basic/string-util.h"
+#include "systemd-basic/strv.h"
+#include "systemd-basic/util.h"
+
+static bool arg_ready = false;
+static pid_t arg_pid = 0;
+static const char *arg_status = NULL;
+static bool arg_booted = false;
+
+static void help(void) {
+ printf("%s [OPTIONS...] [VARIABLE=VALUE...]\n\n"
+ "Notify the init system about service status updates.\n\n"
+ " -h --help Show this help\n"
+ " --version Show package version\n"
+ " --ready Inform the init system about service start-up completion\n"
+ " --pid[=PID] Set main pid of daemon\n"
+ " --status=TEXT Set status text\n"
+ " --booted Check if the system was booted up with systemd\n",
+ program_invocation_short_name);
+}
+
+static int parse_argv(int argc, char *argv[]) {
+
+ enum {
+ ARG_READY = 0x100,
+ ARG_VERSION,
+ ARG_PID,
+ ARG_STATUS,
+ ARG_BOOTED,
+ };
+
+ static const struct option options[] = {
+ { "help", no_argument, NULL, 'h' },
+ { "version", no_argument, NULL, ARG_VERSION },
+ { "ready", no_argument, NULL, ARG_READY },
+ { "pid", optional_argument, NULL, ARG_PID },
+ { "status", required_argument, NULL, ARG_STATUS },
+ { "booted", no_argument, NULL, ARG_BOOTED },
+ {}
+ };
+
+ int c;
+
+ assert(argc >= 0);
+ assert(argv);
+
+ while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0) {
+
+ switch (c) {
+
+ case 'h':
+ help();
+ return 0;
+
+ case ARG_VERSION:
+ return version();
+
+ case ARG_READY:
+ arg_ready = true;
+ break;
+
+ case ARG_PID:
+
+ if (optarg) {
+ if (parse_pid(optarg, &arg_pid) < 0) {
+ log_error("Failed to parse PID %s.", optarg);
+ return -EINVAL;
+ }
+ } else
+ arg_pid = getppid();
+
+ break;
+
+ case ARG_STATUS:
+ arg_status = optarg;
+ break;
+
+ case ARG_BOOTED:
+ arg_booted = true;
+ break;
+
+ case '?':
+ return -EINVAL;
+
+ default:
+ assert_not_reached("Unhandled option");
+ }
+ }
+
+ if (optind >= argc &&
+ !arg_ready &&
+ !arg_status &&
+ !arg_pid &&
+ !arg_booted) {
+ help();
+ return -EINVAL;
+ }
+
+ return 1;
+}
+
+int main(int argc, char* argv[]) {
+ _cleanup_free_ char *status = NULL, *cpid = NULL, *n = NULL;
+ _cleanup_strv_free_ char **final_env = NULL;
+ char* our_env[4];
+ unsigned i = 0;
+ int r;
+
+ log_parse_environment();
+ log_open();
+
+ r = parse_argv(argc, argv);
+ if (r <= 0)
+ goto finish;
+
+ if (arg_booted)
+ return sd_booted() <= 0;
+
+ if (arg_ready)
+ our_env[i++] = (char*) "READY=1";
+
+ if (arg_status) {
+ status = strappend("STATUS=", arg_status);
+ if (!status) {
+ r = log_oom();
+ goto finish;
+ }
+
+ our_env[i++] = status;
+ }
+
+ if (arg_pid > 0) {
+ if (asprintf(&cpid, "MAINPID="PID_FMT, arg_pid) < 0) {
+ r = log_oom();
+ goto finish;
+ }
+
+ our_env[i++] = cpid;
+ }
+
+ our_env[i++] = NULL;
+
+ final_env = strv_env_merge(2, our_env, argv + optind);
+ if (!final_env) {
+ r = log_oom();
+ goto finish;
+ }
+
+ if (strv_length(final_env) <= 0) {
+ r = 0;
+ goto finish;
+ }
+
+ n = strv_join(final_env, "\n");
+ if (!n) {
+ r = log_oom();
+ goto finish;
+ }
+
+ r = sd_pid_notify(arg_pid ? arg_pid : getppid(), false, n);
+ if (r < 0) {
+ log_error_errno(r, "Failed to notify init system: %m");
+ goto finish;
+ } else if (r == 0) {
+ log_error("No status data could be sent: $NOTIFY_SOCKET was not set");
+ r = -EOPNOTSUPP;
+ }
+
+finish:
+ return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
+}