shared/bus-unit-util: add helper for filter lists

diff --git a/src/shared/bus-unit-util.c b/src/shared/bus-unit-util.c
index d3d2eb6dcf1c52926030388f183e271b97c3667e..b79df51292363f1a3d6669db867da79776b709a4 100644 (file)
--- a/src/shared/bus-unit-util.c
+++ b/src/shared/bus-unit-util.c
@@ -1352,6 +1352,75 @@ static int bus_append_numa_mask(sd_bus_message *m, const char *field, const char
         return bus_append_byte_array(m, field, array, allocated);
 }
 
+static int bus_append_filter_list(sd_bus_message *m, const char *field, const char *eq) {
+        int allow_list = 1;
+        const char *p = eq;
+        int r;
+
+        if (*p == '~') {
+                allow_list = 0;
+                p++;
+        }
+
+        r = sd_bus_message_open_container(m, SD_BUS_TYPE_STRUCT, "sv");
+        if (r < 0)
+                return bus_log_create_error(r);
+
+        r = sd_bus_message_append_basic(m, SD_BUS_TYPE_STRING, field);
+        if (r < 0)
+                return bus_log_create_error(r);
+
+        r = sd_bus_message_open_container(m, 'v', "(bas)");
+        if (r < 0)
+                return bus_log_create_error(r);
+
+        r = sd_bus_message_open_container(m, 'r', "bas");
+        if (r < 0)
+                return bus_log_create_error(r);
+
+        r = sd_bus_message_append_basic(m, 'b', &allow_list);
+        if (r < 0)
+                return bus_log_create_error(r);
+
+        r = sd_bus_message_open_container(m, 'a', "s");
+        if (r < 0)
+                return bus_log_create_error(r);
+
+        for (;;) {
+                _cleanup_free_ char *word = NULL;
+
+                r = extract_first_word(&p, &word, NULL, EXTRACT_UNQUOTE);
+                if (r == 0)
+                        break;
+                if (r == -ENOMEM)
+                        return log_oom();
+                if (r < 0)
+                        return log_error_errno(r, "Invalid syntax: %s", eq);
+
+                r = sd_bus_message_append_basic(m, 's', word);
+                if (r < 0)
+                        return bus_log_create_error(r);
+        }
+
+        r = sd_bus_message_close_container(m);
+        if (r < 0)
+                return bus_log_create_error(r);
+
+        r = sd_bus_message_close_container(m);
+        if (r < 0)
+                return bus_log_create_error(r);
+
+        r = sd_bus_message_close_container(m);
+        if (r < 0)
+                return bus_log_create_error(r);
+
+        r = sd_bus_message_close_container(m);
+        if (r < 0)
+                return bus_log_create_error(r);
+
+        return 1;
+}
+
 static int bus_append_cgroup_property(sd_bus_message *m, const char *field, const char *eq) {
         if (STR_IN_SET(field, "DevicePolicy",
                               "Slice",
@@ -1684,73 +1753,8 @@ static int bus_append_execute_property(sd_bus_message *m, const char *field, con
                               "RestrictFileSystems",
                               "SystemCallFilter",
                               "SystemCallLog",
-                              "RestrictNetworkInterfaces")) {
-                int allow_list = 1;
-                const char *p = eq;
-
-                if (*p == '~') {
-                        allow_list = 0;
-                        p++;
-                }
-
-                r = sd_bus_message_open_container(m, SD_BUS_TYPE_STRUCT, "sv");
-                if (r < 0)
-                        return bus_log_create_error(r);
-
-                r = sd_bus_message_append_basic(m, SD_BUS_TYPE_STRING, field);
-                if (r < 0)
-                        return bus_log_create_error(r);
-
-                r = sd_bus_message_open_container(m, 'v', "(bas)");
-                if (r < 0)
-                        return bus_log_create_error(r);
-
-                r = sd_bus_message_open_container(m, 'r', "bas");
-                if (r < 0)
-                        return bus_log_create_error(r);
-
-                r = sd_bus_message_append_basic(m, 'b', &allow_list);
-                if (r < 0)
-                        return bus_log_create_error(r);
-
-                r = sd_bus_message_open_container(m, 'a', "s");
-                if (r < 0)
-                        return bus_log_create_error(r);
-
-                for (;;) {
-                        _cleanup_free_ char *word = NULL;
-
-                        r = extract_first_word(&p, &word, NULL, EXTRACT_UNQUOTE);
-                        if (r == 0)
-                                break;
-                        if (r == -ENOMEM)
-                                return log_oom();
-                        if (r < 0)
-                                return log_error_errno(r, "Invalid syntax: %s", eq);
-
-                        r = sd_bus_message_append_basic(m, 's', word);
-                        if (r < 0)
-                                return bus_log_create_error(r);
-                }
-
-                r = sd_bus_message_close_container(m);
-                if (r < 0)
-                        return bus_log_create_error(r);
-
-                r = sd_bus_message_close_container(m);
-                if (r < 0)
-                        return bus_log_create_error(r);
-
-                r = sd_bus_message_close_container(m);
-                if (r < 0)
-                        return bus_log_create_error(r);
-
-                r = sd_bus_message_close_container(m);
-                if (r < 0)
-                        return bus_log_create_error(r);
-
-                return 1;
-        }
+                              "RestrictNetworkInterfaces"))
+                return bus_append_filter_list(m, field, eq);
 
         if (STR_IN_SET(field, "RestrictNamespaces",
                               "DelegateNamespaces")) {