chiark / gitweb /
Fix write-only use of a few variables
[elogind.git] / src / systemctl / systemctl.c
index a635891bc015fc94124c71a875fc9dc86e1991d2..a8a86edd1fbeb647c1ef9639ab21e4e0951297ab 100644 (file)
@@ -72,6 +72,7 @@ static char **arg_types = NULL;
 static char **arg_states = NULL;
 static char **arg_properties = NULL;
 static bool arg_all = false;
+static bool original_stdout_is_tty;
 static enum dependency {
         DEPENDENCY_FORWARD,
         DEPENDENCY_REVERSE,
@@ -309,7 +310,7 @@ static void output_units_list(const struct unit_info *unit_infos, unsigned c) {
                 }
         }
 
-        if (!arg_full) {
+        if (!arg_full && original_stdout_is_tty) {
                 unsigned basic_len;
                 id_len = MIN(max_id_len, 25u);
                 basic_len = 5 + id_len + 5 + active_len + sub_len;
@@ -376,7 +377,7 @@ static void output_units_list(const struct unit_info *unit_infos, unsigned c) {
                        on_active, active_len, u->active_state,
                        sub_len, u->sub_state, off_active,
                        job_count ? job_len + 1 : 0, u->job_id ? u->job_type : "");
-                if (!arg_full && arg_no_pager)
+                if (desc_len > 0)
                         printf("%.*s\n", desc_len, u->description);
                 else
                         printf("%s\n", u->description);
@@ -470,7 +471,7 @@ static int list_units(DBusConnection *bus, char **args) {
         if (r < 0)
                 return r;
 
-        qsort(unit_infos, c, sizeof(struct unit_info), compare_unit_info);
+        qsort_safe(unit_infos, c, sizeof(struct unit_info), compare_unit_info);
 
         output_units_list(unit_infos, c);
 
@@ -732,8 +733,8 @@ static int list_sockets(DBusConnection *bus, char **args) {
                 listen = triggered = NULL; /* avoid cleanup */
         }
 
-        qsort(socket_infos, cs, sizeof(struct socket_info),
-              (__compar_fn_t) socket_info_compare);
+        qsort_safe(socket_infos, cs, sizeof(struct socket_info),
+                   (__compar_fn_t) socket_info_compare);
 
         output_sockets_list(socket_infos, cs);
 
@@ -747,7 +748,7 @@ static int list_sockets(DBusConnection *bus, char **args) {
         }
         free(socket_infos);
 
-        return 0;
+        return r;
 }
 
 static int compare_unit_file_list(const void *a, const void *b) {
@@ -1107,7 +1108,7 @@ static int list_dependencies_one(DBusConnection *bus, const char *name, int leve
         if (r < 0)
                 return r;
 
-        qsort(deps, strv_length(deps), sizeof (char*), list_dependencies_compare);
+        qsort_safe(deps, strv_length(deps), sizeof (char*), list_dependencies_compare);
 
         STRV_FOREACH(c, deps) {
                 if (strv_contains(u, *c)) {
@@ -1495,6 +1496,7 @@ static DBusHandlerResult wait_filter(DBusConnection *connection, DBusMessage *me
         } else if (dbus_message_is_signal(message, "org.freedesktop.systemd1.Manager", "JobRemoved")) {
                 uint32_t id;
                 const char *path, *result, *unit;
+                char *r;
 
                 if (dbus_message_get_args(message, &error,
                                           DBUS_TYPE_UINT32, &id,
@@ -1503,7 +1505,11 @@ static DBusHandlerResult wait_filter(DBusConnection *connection, DBusMessage *me
                                           DBUS_TYPE_STRING, &result,
                                           DBUS_TYPE_INVALID)) {
 
-                        free(set_remove(d->set, (char*) path));
+                        r = set_remove(d->set, (char*) path);
+                        if (!r)
+                                return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
+
+                        free(r);
 
                         if (!isempty(result))
                                 d->result = strdup(result);
@@ -1523,7 +1529,11 @@ static DBusHandlerResult wait_filter(DBusConnection *connection, DBusMessage *me
                         /* Compatibility with older systemd versions <
                          * 183 during upgrades. This should be dropped
                          * one day. */
-                        free(set_remove(d->set, (char*) path));
+                        r = set_remove(d->set, (char*) path);
+                        if (!r)
+                                return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
+
+                        free(r);
 
                         if (*result)
                                 d->result = strdup(result);
@@ -3315,6 +3325,24 @@ static int print_property(const char *name, DBusMessageIter *iter) {
                         }
                         return 0;
 
+                } else if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT && streq(name, "BlockIODeviceWeight")) {
+                        DBusMessageIter sub, sub2;
+
+                        dbus_message_iter_recurse(iter, &sub);
+                        while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) {
+                                const char *path;
+                                uint64_t weight;
+
+                                dbus_message_iter_recurse(&sub, &sub2);
+
+                                if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &path, true) >= 0 &&
+                                    bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT64, &weight, false) >= 0)
+                                        printf("%s=%s %" PRIu64 "\n", name, strna(path), weight);
+
+                                dbus_message_iter_next(&sub);
+                        }
+                        return 0;
+
                 } else if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT && (streq(name, "BlockIOReadBandwidth") || streq(name, "BlockIOWriteBandwidth"))) {
                         DBusMessageIter sub, sub2;
 
@@ -3504,7 +3532,7 @@ static int show_all(const char* verb,
         if (r < 0)
                 return r;
 
-        qsort(unit_infos, c, sizeof(struct unit_info), compare_unit_info);
+        qsort_safe(unit_infos, c, sizeof(struct unit_info), compare_unit_info);
 
         for (u = unit_infos; u < unit_infos + c; u++) {
                 _cleanup_free_ char *p = NULL;
@@ -3630,7 +3658,7 @@ static int append_assignment(DBusMessageIter *iter, const char *assignment) {
                     !dbus_message_iter_append_basic(&sub, DBUS_TYPE_BOOLEAN, &b))
                         return log_oom();
 
-        } else if (streq(field, "MemoryLimit") || streq(field, "MemorySoftLimit")) {
+        } else if (streq(field, "MemoryLimit")) {
                 off_t bytes;
                 uint64_t u;
 
@@ -3685,6 +3713,11 @@ static int append_assignment(DBusMessageIter *iter, const char *assignment) {
                                 rwm = "";
                         }
 
+                        if (!path_startswith(path, "/dev")) {
+                                log_error("%s is not a device file in /dev.", path);
+                                return -EINVAL;
+                        }
+
                         if (!dbus_message_iter_open_container(&sub2, DBUS_TYPE_STRUCT, NULL, &sub3) ||
                             !dbus_message_iter_append_basic(&sub3, DBUS_TYPE_STRING, &path) ||
                             !dbus_message_iter_append_basic(&sub3, DBUS_TYPE_STRING, &rwm) ||
@@ -3695,6 +3728,94 @@ static int append_assignment(DBusMessageIter *iter, const char *assignment) {
                 if (!dbus_message_iter_close_container(&sub, &sub2))
                         return log_oom();
 
+        } else if (streq(field, "BlockIOReadBandwidth") || streq(field, "BlockIOWriteBandwidth")) {
+                DBusMessageIter sub2;
+
+                if (!dbus_message_iter_open_container(iter, DBUS_TYPE_VARIANT, "a(st)", &sub) ||
+                    !dbus_message_iter_open_container(&sub, DBUS_TYPE_ARRAY, "(st)", &sub2))
+                        return log_oom();
+
+                if (!isempty(eq)) {
+                        const char *path, *bandwidth;
+                        DBusMessageIter sub3;
+                        uint64_t u;
+                        off_t bytes;
+                        char *e;
+
+                        e = strchr(eq, ' ');
+                        if (e) {
+                                path = strndupa(eq, e - eq);
+                                bandwidth = e+1;
+                        } else {
+                                log_error("Failed to parse %s value %s.", field, eq);
+                                return -EINVAL;
+                        }
+
+                        if (!path_startswith(path, "/dev")) {
+                                log_error("%s is not a device file in /dev.", path);
+                                return -EINVAL;
+                        }
+
+                        r = parse_bytes(bandwidth, &bytes);
+                        if (r < 0) {
+                                log_error("Failed to parse byte value %s.", bandwidth);
+                                return -EINVAL;
+                        }
+
+                        u = (uint64_t) bytes;
+
+                        if (!dbus_message_iter_open_container(&sub2, DBUS_TYPE_STRUCT, NULL, &sub3) ||
+                            !dbus_message_iter_append_basic(&sub3, DBUS_TYPE_STRING, &path) ||
+                            !dbus_message_iter_append_basic(&sub3, DBUS_TYPE_UINT64, &u) ||
+                            !dbus_message_iter_close_container(&sub2, &sub3))
+                                return log_oom();
+                }
+
+                if (!dbus_message_iter_close_container(&sub, &sub2))
+                        return log_oom();
+
+        } else if (streq(field, "BlockIODeviceWeight")) {
+                DBusMessageIter sub2;
+
+                if (!dbus_message_iter_open_container(iter, DBUS_TYPE_VARIANT, "a(st)", &sub) ||
+                    !dbus_message_iter_open_container(&sub, DBUS_TYPE_ARRAY, "(st)", &sub2))
+                        return log_oom();
+
+                if (!isempty(eq)) {
+                        const char *path, *weight;
+                        DBusMessageIter sub3;
+                        uint64_t u;
+                        char *e;
+
+                        e = strchr(eq, ' ');
+                        if (e) {
+                                path = strndupa(eq, e - eq);
+                                weight = e+1;
+                        } else {
+                                log_error("Failed to parse %s value %s.", field, eq);
+                                return -EINVAL;
+                        }
+
+                        if (!path_startswith(path, "/dev")) {
+                                log_error("%s is not a device file in /dev.", path);
+                                return -EINVAL;
+                        }
+
+                        r = safe_atou64(weight, &u);
+                        if (r < 0) {
+                                log_error("Failed to parse %s value %s.", field, weight);
+                                return -EINVAL;
+                        }
+                        if (!dbus_message_iter_open_container(&sub2, DBUS_TYPE_STRUCT, NULL, &sub3) ||
+                            !dbus_message_iter_append_basic(&sub3, DBUS_TYPE_STRING, &path) ||
+                            !dbus_message_iter_append_basic(&sub3, DBUS_TYPE_UINT64, &u) ||
+                            !dbus_message_iter_close_container(&sub2, &sub3))
+                                return log_oom();
+                }
+
+                if (!dbus_message_iter_close_container(&sub, &sub2))
+                        return log_oom();
+
         } else {
                 log_error("Unknown assignment %s.", assignment);
                 return -EINVAL;
@@ -3708,7 +3829,8 @@ static int append_assignment(DBusMessageIter *iter, const char *assignment) {
 
 static int set_property(DBusConnection *bus, char **args) {
 
-        _cleanup_free_ DBusMessage *m = NULL, *reply = NULL;
+        _cleanup_dbus_message_unref_ DBusMessage *m = NULL, *reply = NULL;
+        _cleanup_free_ char *n = NULL;
         DBusMessageIter iter, sub;
         dbus_bool_t runtime;
         DBusError error;
@@ -3729,7 +3851,11 @@ static int set_property(DBusConnection *bus, char **args) {
 
         runtime = arg_runtime;
 
-        if (!dbus_message_iter_append_basic(&iter, DBUS_TYPE_STRING, &args[1]) ||
+        n = unit_name_mangle(args[1]);
+        if (!n)
+                return log_oom();
+
+        if (!dbus_message_iter_append_basic(&iter, DBUS_TYPE_STRING, &n) ||
             !dbus_message_iter_append_basic(&iter, DBUS_TYPE_BOOLEAN, &runtime) ||
             !dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "(sv)", &sub))
                 return log_oom();
@@ -4092,11 +4218,10 @@ static int set_environment(DBusConnection *bus, char **args) {
         return 0;
 }
 
-static int enable_sysv_units(char **args) {
+static int enable_sysv_units(const char *verb, char **args) {
         int r = 0;
 
 #if defined(HAVE_SYSV_COMPAT) && defined(HAVE_CHKCONFIG)
-        const char *verb = args[0];
         unsigned f = 1, t = 1;
         LookupPaths paths = {};
 
@@ -4116,7 +4241,7 @@ static int enable_sysv_units(char **args) {
                 return r;
 
         r = 0;
-        for (f = 1; args[f]; f++) {
+        for (f = 0; args[f]; f++) {
                 const char *name;
                 _cleanup_free_ char *p = NULL, *q = NULL;
                 bool found_native = false, found_sysv;
@@ -4239,7 +4364,7 @@ finish:
         lookup_paths_free(&paths);
 
         /* Drop all SysV units */
-        for (f = 1, t = 1; args[f]; f++) {
+        for (f = 0, t = 0; args[f]; f++) {
 
                 if (isempty(args[f]))
                         continue;
@@ -4297,16 +4422,16 @@ static int enable_unit(DBusConnection *bus, char **args) {
 
         dbus_error_init(&error);
 
-        r = enable_sysv_units(args);
-        if (r < 0)
-                return r;
-
         if (!args[1])
                 return 0;
 
         r = mangle_names(args+1, &mangled_names);
         if (r < 0)
-                goto finish;
+                return r;
+
+        r = enable_sysv_units(verb, mangled_names);
+        if (r < 0)
+                return r;
 
         if (!bus || avoid_bus()) {
                 if (streq(verb, "enable")) {
@@ -4498,11 +4623,15 @@ static int unit_is_enabled(DBusConnection *bus, char **args) {
         _cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
         bool enabled;
         char **name;
-        char *n;
+        _cleanup_strv_free_ char **mangled_names = NULL;
 
         dbus_error_init(&error);
 
-        r = enable_sysv_units(args);
+        r = mangle_names(args+1, &mangled_names);
+        if (r < 0)
+                return r;
+
+        r = enable_sysv_units(args[0], mangled_names);
         if (r < 0)
                 return r;
 
@@ -4510,16 +4639,10 @@ static int unit_is_enabled(DBusConnection *bus, char **args) {
 
         if (!bus || avoid_bus()) {
 
-                STRV_FOREACH(name, args+1) {
+                STRV_FOREACH(name, mangled_names) {
                         UnitFileState state;
 
-                        n = unit_name_mangle(*name);
-                        if (!n)
-                                return log_oom();
-
-                        state = unit_file_get_state(arg_scope, arg_root, n);
-
-                        free(n);
+                        state = unit_file_get_state(arg_scope, arg_root, *name);
 
                         if (state < 0)
                                 return state;
@@ -4534,13 +4657,9 @@ static int unit_is_enabled(DBusConnection *bus, char **args) {
                 }
 
         } else {
-                STRV_FOREACH(name, args+1) {
+                STRV_FOREACH(name, mangled_names) {
                         const char *s;
 
-                        n = unit_name_mangle(*name);
-                        if (!n)
-                                return log_oom();
-
                         r = bus_method_call_with_reply (
                                         bus,
                                         "org.freedesktop.systemd1",
@@ -4549,11 +4668,9 @@ static int unit_is_enabled(DBusConnection *bus, char **args) {
                                         "GetUnitFileState",
                                         &reply,
                                         NULL,
-                                        DBUS_TYPE_STRING, &n,
+                                        DBUS_TYPE_STRING, name,
                                         DBUS_TYPE_INVALID);
 
-                        free(n);
-
                         if (r)
                                 return r;
 
@@ -5552,94 +5669,6 @@ _pure_ static int action_to_runlevel(void) {
         return table[arg_action];
 }
 
-static int talk_upstart(void) {
-        _cleanup_dbus_message_unref_ DBusMessage *m = NULL, *reply = NULL;
-        _cleanup_dbus_error_free_ DBusError error;
-        int previous, rl, r;
-        char
-                env1_buf[] = "RUNLEVEL=X",
-                env2_buf[] = "PREVLEVEL=X";
-        char *env1 = env1_buf, *env2 = env2_buf;
-        const char *emit = "runlevel";
-        dbus_bool_t b_false = FALSE;
-        DBusMessageIter iter, sub;
-        DBusConnection *bus;
-
-        dbus_error_init(&error);
-
-        if (!(rl = action_to_runlevel()))
-                return 0;
-
-        if (utmp_get_runlevel(&previous, NULL) < 0)
-                previous = 'N';
-
-        if (!(bus = dbus_connection_open_private("unix:abstract=/com/ubuntu/upstart", &error))) {
-                if (dbus_error_has_name(&error, DBUS_ERROR_NO_SERVER)) {
-                        r = 0;
-                        goto finish;
-                }
-
-                log_error("Failed to connect to Upstart bus: %s", bus_error_message(&error));
-                r = -EIO;
-                goto finish;
-        }
-
-        if ((r = bus_check_peercred(bus)) < 0) {
-                log_error("Failed to verify owner of bus.");
-                goto finish;
-        }
-
-        if (!(m = dbus_message_new_method_call(
-                              "com.ubuntu.Upstart",
-                              "/com/ubuntu/Upstart",
-                              "com.ubuntu.Upstart0_6",
-                              "EmitEvent"))) {
-
-                log_error("Could not allocate message.");
-                r = -ENOMEM;
-                goto finish;
-        }
-
-        dbus_message_iter_init_append(m, &iter);
-
-        env1_buf[sizeof(env1_buf)-2] = rl;
-        env2_buf[sizeof(env2_buf)-2] = previous;
-
-        if (!dbus_message_iter_append_basic(&iter, DBUS_TYPE_STRING, &emit) ||
-            !dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "s", &sub) ||
-            !dbus_message_iter_append_basic(&sub, DBUS_TYPE_STRING, &env1) ||
-            !dbus_message_iter_append_basic(&sub, DBUS_TYPE_STRING, &env2) ||
-            !dbus_message_iter_close_container(&iter, &sub) ||
-            !dbus_message_iter_append_basic(&iter, DBUS_TYPE_BOOLEAN, &b_false)) {
-                log_error("Could not append arguments to message.");
-                r = -ENOMEM;
-                goto finish;
-        }
-
-        if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
-
-                if (bus_error_is_no_service(&error)) {
-                        r = -EADDRNOTAVAIL;
-                        goto finish;
-                }
-
-                log_error("Failed to issue method call: %s", bus_error_message(&error));
-                r = -EIO;
-                goto finish;
-        }
-
-        r = 1;
-
-finish:
-        if (bus) {
-                dbus_connection_flush(bus);
-                dbus_connection_close(bus);
-                dbus_connection_unref(bus);
-        }
-
-        return r;
-}
-
 static int talk_initctl(void) {
         struct init_request request = {};
         int r;
@@ -5911,11 +5940,6 @@ static int start_with_fallback(DBusConnection *bus) {
                         goto done;
         }
 
-        /* Hmm, talking to systemd via D-Bus didn't work. Then
-         * let's try to talk to Upstart via D-Bus. */
-        if (talk_upstart() > 0)
-                goto done;
-
         /* Nothing else worked, so let's try
          * /dev/initctl */
         if (talk_initctl() > 0)
@@ -6057,6 +6081,11 @@ int main(int argc, char*argv[]) {
         log_parse_environment();
         log_open();
 
+        /* Explicitly not on_tty() to avoid setting cached value.
+         * This becomes relevant for piping output which might be
+         * ellipsized. */
+        original_stdout_is_tty = isatty(STDOUT_FILENO);
+
         r = parse_argv(argc, argv);
         if (r < 0)
                 goto finish;