Add base support for event rule hit

[lttng-tools.git] / src / common / event-rule / event-rule.c

diff --git a/src/common/event-rule/event-rule.c b/src/common/event-rule/event-rule.c
index cdf3e0dedbea19b357fcb68a8342a26cf27c44ef..a42d5555c409eff5e0693becd92b55a6ea1cb2dc 100644 (file)
--- a/src/common/event-rule/event-rule.c
+++ b/src/common/event-rule/event-rule.c
@@ -11,6 +11,8 @@
 #include <common/macros.h>
 #include <common/payload.h>
 #include <common/payload-view.h>
+#include <common/hashtable/hashtable.h>
+#include <common/hashtable/utils.h>
 #include <lttng/event-rule/event-rule-internal.h>
 #include <lttng/event-rule/kprobe-internal.h>
 #include <lttng/event-rule/syscall-internal.h>
@@ -145,16 +147,24 @@ ssize_t lttng_event_rule_create_from_payload(
                struct lttng_event_rule **event_rule)
 {
        ssize_t ret, consumed = 0;
-       const struct lttng_event_rule_comm *event_rule_comm;
        event_rule_create_from_payload_cb create_from_payload = NULL;
+       const struct lttng_event_rule_comm *event_rule_comm;
+       const struct lttng_payload_view event_rule_comm_view =
+                       lttng_payload_view_from_view(
+                                       view, 0, sizeof(*event_rule_comm));
 
        if (!view || !event_rule) {
                ret = -1;
                goto end;
        }
 
-       DBG("Deserializing event_rule from payload.");
-       event_rule_comm = (const struct lttng_event_rule_comm *) view->buffer.data;
+       if (!lttng_payload_view_is_valid(&event_rule_comm_view)) {
+               ret = -1;
+               goto end;
+       }
+
+       DBG("Deserializing event_rule from payload");
+       event_rule_comm = (const struct lttng_event_rule_comm *) event_rule_comm_view.buffer.data;
        consumed += sizeof(*event_rule_comm);
 
        switch ((enum lttng_event_rule_type) event_rule_comm->event_rule_type) {
@@ -234,10 +244,11 @@ void lttng_event_rule_put(struct lttng_event_rule *event_rule)
 
 LTTNG_HIDDEN
 enum lttng_error_code lttng_event_rule_generate_filter_bytecode(
-               struct lttng_event_rule *rule, uid_t uid, gid_t gid)
+               struct lttng_event_rule *rule,
+               const struct lttng_credentials *creds)
 {
        assert(rule->generate_filter_bytecode);
-       return rule->generate_filter_bytecode(rule, uid, gid);
+       return rule->generate_filter_bytecode(rule, creds);
 }
 
 LTTNG_HIDDEN
@@ -283,3 +294,10 @@ const char *lttng_event_rule_type_str(enum lttng_event_rule_type type)
                abort();
        }
 }
+
+LTTNG_HIDDEN
+unsigned long lttng_event_rule_hash(const struct lttng_event_rule *rule)
+{
+       assert(rule->hash);
+       return rule->hash(rule);
+}