Introduce emission site for syscall event rule

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

diff --git a/src/common/event-rule/syscall.c b/src/common/event-rule/syscall.c
index fbaa65310a6966548690bbb7db65c9c6ca91712b..12aeacfcff9a88fbe4f4904a14b9502c692123d1 100644 (file)
--- a/src/common/event-rule/syscall.c
+++ b/src/common/event-rule/syscall.c
@@ -88,6 +88,7 @@ static int lttng_event_rule_syscall_serialize(
 
        syscall_comm.pattern_len = pattern_len;
        syscall_comm.filter_expression_len = filter_expression_len;
 
        syscall_comm.pattern_len = pattern_len;
        syscall_comm.filter_expression_len = filter_expression_len;

+       syscall_comm.emission_site_type = syscall->emission_site_type;

 
        ret = lttng_dynamic_buffer_append(
                        &payload->buffer, &syscall_comm, sizeof(syscall_comm));
 
        ret = lttng_dynamic_buffer_append(
                        &payload->buffer, &syscall_comm, sizeof(syscall_comm));


@@ -246,12 +247,25 @@ lttng_event_rule_syscall_hash(
        return hash;
 }
 
        return hash;
 }
 

-struct lttng_event_rule *lttng_event_rule_syscall_create(void)
+struct lttng_event_rule *lttng_event_rule_syscall_create(
+               enum lttng_event_rule_syscall_emission_site_type
+                               emission_site_type)

 {
        struct lttng_event_rule *rule = NULL;
        struct lttng_event_rule_syscall *syscall_rule;
        enum lttng_event_rule_status status;
 
 {
        struct lttng_event_rule *rule = NULL;
        struct lttng_event_rule_syscall *syscall_rule;
        enum lttng_event_rule_status status;
 

+       /* Validate the emission site type */
+       switch (emission_site_type) {
+       case LTTNG_EVENT_RULE_SYSCALL_EMISSION_SITE_ENTRY_EXIT:
+       case LTTNG_EVENT_RULE_SYSCALL_EMISSION_SITE_ENTRY:
+       case LTTNG_EVENT_RULE_SYSCALL_EMISSION_SITE_EXIT:
+               break;
+       default:
+               /* Invalid emission type */
+               goto end;
+       }
+

        syscall_rule = zmalloc(sizeof(struct lttng_event_rule_syscall));
        if (!syscall_rule) {
                goto end;
        syscall_rule = zmalloc(sizeof(struct lttng_event_rule_syscall));
        if (!syscall_rule) {
                goto end;


@@ -281,6 +295,9 @@ struct lttng_event_rule *lttng_event_rule_syscall_create(void)
                rule = NULL;
        }
 
                rule = NULL;
        }
 

+       /* Emission site type */
+       syscall_rule->emission_site_type = emission_site_type;
+

 end:
        return rule;
 }
 end:
        return rule;
 }


@@ -317,7 +334,7 @@ ssize_t lttng_event_rule_syscall_create_from_payload(
        }
 
        syscall_comm = (typeof(syscall_comm)) current_buffer_view.data;
        }
 
        syscall_comm = (typeof(syscall_comm)) current_buffer_view.data;

-       rule = lttng_event_rule_syscall_create();
+       rule = lttng_event_rule_syscall_create(syscall_comm->emission_site_type);

        if (!rule) {
                ERR("Failed to create event rule syscall");
                ret = -1;
        if (!rule) {
                ERR("Failed to create event rule syscall");
                ret = -1;


@@ -500,3 +517,37 @@ enum lttng_event_rule_status lttng_event_rule_syscall_get_filter(
 end:
        return status;
 }
 end:
        return status;
 }

+extern enum lttng_event_rule_syscall_emission_site_type
+lttng_event_rule_syscall_get_emission_site_type(
+               const struct lttng_event_rule *rule)
+{
+       enum lttng_event_rule_syscall_emission_site_type emission_site_type =
+               LTTNG_EVENT_RULE_SYSCALL_EMISSION_SITE_UNKNOWN;
+       struct lttng_event_rule_syscall *syscall;
+
+       if (!rule || !IS_SYSCALL_EVENT_RULE(rule)) {
+               goto end;
+       }
+
+       syscall = container_of(rule, struct lttng_event_rule_syscall, parent);
+       emission_site_type = syscall->emission_site_type;
+
+end:
+       return emission_site_type;
+}
+
+LTTNG_HIDDEN
+const char *lttng_event_rule_syscall_emission_site_str(
+               enum lttng_event_rule_syscall_emission_site_type type)
+{
+       switch (type) {
+       case LTTNG_EVENT_RULE_SYSCALL_EMISSION_SITE_ENTRY:
+               return "entry";
+       case LTTNG_EVENT_RULE_SYSCALL_EMISSION_SITE_ENTRY_EXIT:
+               return "entry+exit";
+       case LTTNG_EVENT_RULE_SYSCALL_EMISSION_SITE_EXIT:
+               return "exit";
+       default:
+               return "???";
+       }
+}