- if (bus->is_kernel) {
- struct kdbus_cmd_match *m;
- struct kdbus_item *item;
- uint64_t bloom[BLOOM_SIZE/8];
- size_t sz;
- const char *sender = NULL;
- size_t sender_length = 0;
- uint64_t src_id = KDBUS_MATCH_SRC_ID_ANY;
- bool using_bloom = false;
- unsigned i;
- bool matches_name_change = true;
- const char *name_change_arg[3] = {};
-
- zero(bloom);
-
- sz = offsetof(struct kdbus_cmd_match, items);
-
- for (i = 0; i < n_components; i++) {
- struct bus_match_component *c = &components[i];
-
- switch (c->type) {
-
- case BUS_MATCH_SENDER:
- if (!streq(c->value_str, "org.freedesktop.DBus"))
- matches_name_change = false;
-
- r = bus_kernel_parse_unique_name(c->value_str, &src_id);
- if (r < 0)
- return r;
-
- if (r > 0) {
- sender = c->value_str;
- sender_length = strlen(sender);
- sz += ALIGN8(offsetof(struct kdbus_item, str) + sender_length + 1);
- }
-
- break;
-
- case BUS_MATCH_MESSAGE_TYPE:
- if (c->value_u8 != SD_BUS_MESSAGE_SIGNAL)
- matches_name_change = false;
-
- bloom_add_pair(bloom, "message-type", bus_message_type_to_string(c->value_u8));
- using_bloom = true;
- break;
-
- case BUS_MATCH_INTERFACE:
- if (!streq(c->value_str, "org.freedesktop.DBus"))
- matches_name_change = false;
-
- bloom_add_pair(bloom, "interface", c->value_str);
- using_bloom = true;
- break;
-
- case BUS_MATCH_MEMBER:
- if (!streq(c->value_str, "NameOwnerChanged"))
- matches_name_change = false;
-
- bloom_add_pair(bloom, "member", c->value_str);
- using_bloom = true;
- break;
-
- case BUS_MATCH_PATH:
- if (!streq(c->value_str, "/org/freedesktop/DBus"))
- matches_name_change = false;
-
- bloom_add_pair(bloom, "path", c->value_str);
- using_bloom = true;
- break;
-
- case BUS_MATCH_PATH_NAMESPACE:
- if (!streq(c->value_str, "/")) {
- bloom_add_pair(bloom, "path-slash-prefix", c->value_str);
- using_bloom = true;
- }
- break;
-
- case BUS_MATCH_ARG...BUS_MATCH_ARG_LAST: {
- char buf[sizeof("arg")-1 + 2 + 1];
-
- if (c->type - BUS_MATCH_ARG < 3)
- name_change_arg[c->type - BUS_MATCH_ARG] = c->value_str;
-
- snprintf(buf, sizeof(buf), "arg%u", c->type - BUS_MATCH_ARG);
- bloom_add_pair(bloom, buf, c->value_str);
- using_bloom = true;
- break;
- }
-
- case BUS_MATCH_ARG_PATH...BUS_MATCH_ARG_PATH_LAST: {
- char buf[sizeof("arg")-1 + 2 + sizeof("-slash-prefix")];
-
- snprintf(buf, sizeof(buf), "arg%u-slash-prefix", c->type - BUS_MATCH_ARG_PATH);
- bloom_add_pair(bloom, buf, c->value_str);
- using_bloom = true;
- break;
- }
-
- case BUS_MATCH_ARG_NAMESPACE...BUS_MATCH_ARG_NAMESPACE_LAST: {
- char buf[sizeof("arg")-1 + 2 + sizeof("-dot-prefix")];
-
- snprintf(buf, sizeof(buf), "arg%u-dot-prefix", c->type - BUS_MATCH_ARG_NAMESPACE);
- bloom_add_pair(bloom, buf, c->value_str);
- using_bloom = true;
- break;
- }
-
- case BUS_MATCH_DESTINATION:
- /* The bloom filter does not include
- the destination, since it is only
- available for broadcast messages
- which do not carry a destination
- since they are undirected. */
- break;
-
- case BUS_MATCH_ROOT:
- case BUS_MATCH_VALUE:
- case BUS_MATCH_LEAF:
- case _BUS_MATCH_NODE_TYPE_MAX:
- case _BUS_MATCH_NODE_TYPE_INVALID:
- assert_not_reached("Invalid match type?");
- }
- }
-
- if (using_bloom)
- sz += ALIGN8(offsetof(struct kdbus_item, data64) + BLOOM_SIZE);
-
- m = alloca0(sz);
- m->size = sz;
- m->cookie = cookie;
- m->src_id = src_id;