chiark / gitweb /
inhibit: allow filtering --list by mode
[elogind.git] / src / login / inhibit.c
index 3ab86ac..122c69d 100644 (file)
@@ -27,7 +27,6 @@
 #include <fcntl.h>
 
 #include "sd-bus.h"
-
 #include "bus-util.h"
 #include "bus-error.h"
 #include "util.h"
@@ -37,7 +36,7 @@
 static const char* arg_what = "idle:sleep:shutdown";
 static const char* arg_who = NULL;
 static const char* arg_why = "Unknown reason";
-static const char* arg_mode = "block";
+static const char* arg_mode = NULL;
 
 static enum {
         ACTION_INHIBIT,
@@ -63,9 +62,9 @@ static int inhibit(sd_bus *bus, sd_bus_error *error) {
 
         r = sd_bus_message_read_basic(reply, SD_BUS_TYPE_UNIX_FD, &fd);
         if (r < 0)
-                return -EIO;
+                return r;
 
-        r = dup(fd);
+        r = fcntl(fd, F_DUPFD_CLOEXEC, 3);
         if (r < 0)
                 return -errno;
 
@@ -93,19 +92,22 @@ static int print_inhibitors(sd_bus *bus, sd_bus_error *error) {
 
         r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "(ssssuu)");
         if (r < 0)
-                return -EIO;
+                return bus_log_parse_error(r);
 
         while ((r = sd_bus_message_read(reply, "(ssssuu)", &what, &who, &why, &mode, &uid, &pid)) > 0) {
                 _cleanup_free_ char *comm = NULL, *u = NULL;
 
+                if (arg_mode && !streq(mode, arg_mode))
+                        continue;
+
                 get_process_comm(pid, &comm);
                 u = uid_to_name(uid);
 
-                printf("     Who: %s (UID %lu/%s, PID %lu/%s)\n"
+                printf("     Who: %s (UID "UID_FMT"/%s, PID "PID_FMT"/%s)\n"
                        "    What: %s\n"
                        "     Why: %s\n"
                        "    Mode: %s\n\n",
-                       who, (unsigned long) uid, strna(u), (unsigned long) pid, strna(comm),
+                       who, uid, strna(u), pid, strna(comm),
                        what,
                        why,
                        mode);
@@ -113,18 +115,17 @@ static int print_inhibitors(sd_bus *bus, sd_bus_error *error) {
                 n++;
         }
         if (r < 0)
-                return -EIO;
+                return bus_log_parse_error(r);
 
         r = sd_bus_message_exit_container(reply);
         if (r < 0)
-                return -EIO;
+                return bus_log_parse_error(r);
 
         printf("%u inhibitors listed.\n", n);
         return 0;
 }
 
-static int help(void) {
-
+static void help(void) {
         printf("%s [OPTIONS...] {COMMAND} ...\n\n"
                "Execute a process while inhibiting shutdown/sleep/idle.\n\n"
                "  -h --help               Show this help\n"
@@ -136,10 +137,8 @@ static int help(void) {
                "     --who=STRING         A descriptive string who is inhibiting\n"
                "     --why=STRING         A descriptive string why is being inhibited\n"
                "     --mode=MODE          One of block or delay\n"
-               "     --list               List active inhibitors\n",
-               program_invocation_short_name);
-
-        return 0;
+               "     --list               List active inhibitors\n"
+               , program_invocation_short_name);
 }
 
 static int parse_argv(int argc, char *argv[]) {
@@ -161,7 +160,7 @@ static int parse_argv(int argc, char *argv[]) {
                 { "why",          required_argument, NULL, ARG_WHY          },
                 { "mode",         required_argument, NULL, ARG_MODE         },
                 { "list",         no_argument,       NULL, ARG_LIST         },
-                { NULL,           0,                 NULL, 0                }
+                {}
         };
 
         int c;
@@ -169,7 +168,7 @@ static int parse_argv(int argc, char *argv[]) {
         assert(argc >= 0);
         assert(argv);
 
-        while ((c = getopt_long(argc, argv, "+h", options, NULL)) >= 0) {
+        while ((c = getopt_long(argc, argv, "+h", options, NULL)) >= 0)
 
                 switch (c) {
 
@@ -202,11 +201,12 @@ static int parse_argv(int argc, char *argv[]) {
                         arg_action = ACTION_LIST;
                         break;
 
-                default:
-                        log_error("Unknown option code %c", c);
+                case '?':
                         return -EINVAL;
+
+                default:
+                        assert_not_reached("Unhandled option");
                 }
-        }
 
         if (arg_action == ACTION_INHIBIT && argc == 1)
                 arg_action = ACTION_LIST;
@@ -221,17 +221,19 @@ static int parse_argv(int argc, char *argv[]) {
 
 int main(int argc, char *argv[]) {
         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
-        _cleanup_bus_unref_ sd_bus *bus = NULL;
+        _cleanup_bus_close_unref_ sd_bus *bus = NULL;
         int r;
 
         log_parse_environment();
         log_open();
 
         r = parse_argv(argc, argv);
-        if (r <= 0)
+        if (r < 0)
                 return EXIT_FAILURE;
+        if (r == 0)
+                return EXIT_SUCCESS;
 
-        r = sd_bus_open_system(&bus);
+        r = sd_bus_default_system(&bus);
         if (r < 0) {
                 log_error("Failed to connect to bus: %s", strerror(-r));
                 return EXIT_FAILURE;
@@ -253,6 +255,9 @@ int main(int argc, char *argv[]) {
                 if (!arg_who)
                         arg_who = w = strv_join(argv + optind, " ");
 
+                if (!arg_mode)
+                        arg_mode = "block";
+
                 fd = inhibit(bus, &error);
                 if (fd < 0) {
                         log_error("Failed to inhibit: %s", bus_error_message(&error, -r));