remove unused includes

[elogind.git] / src / notify / notify.c

diff --git a/src/notify/notify.c b/src/notify/notify.c
index 1e9766f86213fce91f3ae12e1ddeb6c676d68d26..a8ffbe9c8cb26475e385b9e230781c7ea2a2990e 100644 (file)
--- a/src/notify/notify.c
+++ b/src/notify/notify.c
@@ -21,18 +21,15 @@
 
 #include <stdio.h>
 #include <getopt.h>
-#include <error.h>
 #include <errno.h>
 #include <unistd.h>
 #include <stdlib.h>
-#include <string.h>
 
-#include <systemd/sd-daemon.h>
+#include "systemd/sd-daemon.h"
 
 #include "strv.h"
 #include "util.h"
 #include "log.h"
-#include "sd-readahead.h"
 #include "build.h"
 #include "env-util.h"
 
@@ -40,22 +37,17 @@ static bool arg_ready = false;
 static pid_t arg_pid = 0;
 static const char *arg_status = NULL;
 static bool arg_booted = false;
-static const char *arg_readahead = NULL;
-
-static int help(void) {
 
+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           Returns 0 if the system was booted up with systemd, non-zero otherwise\n"
-               "     --readahead=ACTION Controls read-ahead operations\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);
-
-        return 0;
 }
 
 static int parse_argv(int argc, char *argv[]) {
@@ -66,7 +58,6 @@ static int parse_argv(int argc, char *argv[]) {
                 ARG_PID,
                 ARG_STATUS,
                 ARG_BOOTED,
-                ARG_READAHEAD
         };
 
         static const struct option options[] = {
@@ -76,8 +67,7 @@ static int parse_argv(int argc, char *argv[]) {
                 { "pid",       optional_argument, NULL, ARG_PID       },
                 { "status",    required_argument, NULL, ARG_STATUS    },
                 { "booted",    no_argument,       NULL, ARG_BOOTED    },
-                { "readahead", required_argument, NULL, ARG_READAHEAD },
-                { NULL,        0,                 NULL, 0             }
+                {}
         };
 
         int c;
@@ -122,16 +112,11 @@ static int parse_argv(int argc, char *argv[]) {
                         arg_booted = true;
                         break;
 
-                case ARG_READAHEAD:
-                        arg_readahead = optarg;
-                        break;
-
                 case '?':
                         return -EINVAL;
 
                 default:
-                        log_error("Unknown option code %c", c);
-                        return -EINVAL;
+                        assert_not_reached("Unhandled option");
                 }
         }
 
@@ -139,8 +124,7 @@ static int parse_argv(int argc, char *argv[]) {
             !arg_ready &&
             !arg_status &&
             !arg_pid &&
-            !arg_booted &&
-            !arg_readahead) {
+            !arg_booted) {
                 help();
                 return -EINVAL;
         }
@@ -149,35 +133,29 @@ static int parse_argv(int argc, char *argv[]) {
 }
 
 int main(int argc, char* argv[]) {
-        char* our_env[4], **final_env = NULL;
+        _cleanup_free_ char *status = NULL, *cpid = NULL, *n = NULL;
+        _cleanup_strv_free_ char **final_env = NULL;
+        char* our_env[4];
         unsigned i = 0;
-        char *status = NULL, *cpid = NULL, *n = NULL;
-        int r, retval = EXIT_FAILURE;
+        int r;
 
         log_parse_environment();
         log_open();
 
-        if ((r = parse_argv(argc, argv)) <= 0) {
-                retval = r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
+        r = parse_argv(argc, argv);
+        if (r <= 0)
                 goto finish;
-        }
 
         if (arg_booted)
                 return sd_booted() <= 0;
 
-        if (arg_readahead) {
-                if ((r = sd_readahead(arg_readahead)) < 0) {
-                        log_error("Failed to issue read-ahead control command: %s", strerror(-r));
-                        goto finish;
-                }
-        }
-
         if (arg_ready)
                 our_env[i++] = (char*) "READY=1";
 
         if (arg_status) {
-                if (!(status = strappend("STATUS=", arg_status))) {
-                        log_error("Failed to allocate STATUS string.");
+                status = strappend("STATUS=", arg_status);
+                if (!status) {
+                        r = log_oom();
                         goto finish;
                 }
 
@@ -185,8 +163,8 @@ int main(int argc, char* argv[]) {
         }
 
         if (arg_pid > 0) {
-                if (asprintf(&cpid, "MAINPID=%lu", (unsigned long) arg_pid) < 0) {
-                        log_error("Failed to allocate MAINPID string.");
+                if (asprintf(&cpid, "MAINPID="PID_FMT, arg_pid) < 0) {
+                        r = log_oom();
                         goto finish;
                 }
 
@@ -195,34 +173,32 @@ int main(int argc, char* argv[]) {
 
         our_env[i++] = NULL;
 
-        if (!(final_env = strv_env_merge(2, our_env, argv + optind))) {
-                log_error("Failed to merge string sets.");
+        final_env = strv_env_merge(2, our_env, argv + optind);
+        if (!final_env) {
+                r = log_oom();
                 goto finish;
         }
 
         if (strv_length(final_env) <= 0) {
-                retval = EXIT_SUCCESS;
+                r = 0;
                 goto finish;
         }
 
-        if (!(n = strv_join(final_env, "\n"))) {
-                log_error("Failed to concatenate strings.");
+        n = strv_join(final_env, "\n");
+        if (!n) {
+                r = log_oom();
                 goto finish;
         }
 
-        if ((r = sd_notify(false, n)) < 0) {
-                log_error("Failed to notify init system: %s", strerror(-r));
+        r = sd_pid_notify(arg_pid, false, n);
+        if (r < 0) {
+                log_error_errno(r, "Failed to notify init system: %m");
                 goto finish;
         }
 
-        retval = r <= 0 ? EXIT_FAILURE : EXIT_SUCCESS;
+        if (r == 0)
+                r = -ENOTSUP;
 
 finish:
-        free(status);
-        free(cpid);
-        free(n);
-
-        strv_free(final_env);
-
-        return retval;
+        return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
 }