MI: implement all objects related to trigger machine interface

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

diff --git a/src/common/event-rule/kernel-syscall.c b/src/common/event-rule/kernel-syscall.c
index a2a77a3c4d83af12a7bf23a1cafe951d5706648f..5f944d1bebce5572711ad2229fbd7dee21368710 100644 (file)
--- a/src/common/event-rule/kernel-syscall.c
+++ b/src/common/event-rule/kernel-syscall.c
@@ -8,12 +8,13 @@
 #include <assert.h>
 #include <common/credentials.h>
 #include <common/error.h>
+#include <common/hashtable/hashtable.h>
+#include <common/hashtable/utils.h>
 #include <common/macros.h>
-#include <common/payload.h>
+#include <common/mi-lttng.h>
 #include <common/payload-view.h>
+#include <common/payload.h>
 #include <common/runas.h>
-#include <common/hashtable/hashtable.h>
-#include <common/hashtable/utils.h>
 #include <common/string-utils/string-utils.h>
 #include <lttng/event-rule/event-rule-internal.h>
 #include <lttng/event-rule/kernel-syscall-internal.h>
@@ -247,6 +248,95 @@ lttng_event_rule_kernel_syscall_hash(
        return hash;
 }
 
+static enum lttng_error_code lttng_event_rule_kernel_syscall_mi_serialize(
+               const struct lttng_event_rule *rule, struct mi_writer *writer)
+{
+       int ret;
+       enum lttng_error_code ret_code;
+       enum lttng_event_rule_status status;
+
+       enum lttng_event_rule_kernel_syscall_emission_site site_type;
+       const char *filter = NULL;
+       const char *name_pattern = NULL;
+       const char *site_type_str = NULL;
+
+       assert(rule);
+       assert(writer);
+       assert(IS_SYSCALL_EVENT_RULE(rule));
+
+       status = lttng_event_rule_kernel_syscall_get_name_pattern(
+                       rule, &name_pattern);
+       assert(status == LTTNG_EVENT_RULE_STATUS_OK);
+       assert(name_pattern);
+
+       status = lttng_event_rule_kernel_syscall_get_filter(rule, &filter);
+       assert(status == LTTNG_EVENT_RULE_STATUS_OK ||
+                       status == LTTNG_EVENT_RULE_STATUS_UNSET);
+
+       site_type = lttng_event_rule_kernel_syscall_get_emission_site(rule);
+
+       switch (site_type) {
+       case LTTNG_EVENT_RULE_KERNEL_SYSCALL_EMISSION_SITE_ENTRY_EXIT:
+               site_type_str = mi_lttng_event_rule_kernel_syscall_emission_site_entry_exit;
+               break;
+       case LTTNG_EVENT_RULE_KERNEL_SYSCALL_EMISSION_SITE_ENTRY:
+               site_type_str = mi_lttng_event_rule_kernel_syscall_emission_site_entry;
+               break;
+       case LTTNG_EVENT_RULE_KERNEL_SYSCALL_EMISSION_SITE_EXIT:
+               site_type_str = mi_lttng_event_rule_kernel_syscall_emission_site_exit;
+               break;
+       default:
+               abort();
+               break;
+       }
+
+       /* Open event rule kernel syscall element. */
+       ret = mi_lttng_writer_open_element(
+                       writer, mi_lttng_element_event_rule_kernel_syscall);
+       if (ret) {
+               goto mi_error;
+       }
+
+       /* Emission site. */
+       ret = mi_lttng_writer_write_element_string(writer,
+                       mi_lttng_element_event_rule_kernel_syscall_emission_site,
+                       site_type_str);
+       if (ret) {
+               goto mi_error;
+       }
+
+       /* Name pattern. */
+       ret = mi_lttng_writer_write_element_string(writer,
+                       mi_lttng_element_event_rule_name_pattern, name_pattern);
+       if (ret) {
+               goto mi_error;
+       }
+
+       /* Filter. */
+       if (filter != NULL) {
+               ret = mi_lttng_writer_write_element_string(writer,
+                               mi_lttng_element_event_rule_filter_expression,
+                               filter);
+               if (ret) {
+                       goto mi_error;
+               }
+       }
+
+       /* Close event rule kernel syscall. */
+       ret = mi_lttng_writer_close_element(writer);
+       if (ret) {
+               goto mi_error;
+       }
+
+       ret_code = LTTNG_OK;
+       goto end;
+
+mi_error:
+       ret_code = LTTNG_ERR_MI_IO_FAIL;
+end:
+       return ret_code;
+}
+
 struct lttng_event_rule *lttng_event_rule_kernel_syscall_create(
                enum lttng_event_rule_kernel_syscall_emission_site
                                emission_site)
@@ -287,6 +377,7 @@ struct lttng_event_rule *lttng_event_rule_kernel_syscall_create(
        syscall_rule->parent.generate_exclusions =
                        lttng_event_rule_kernel_syscall_generate_exclusions;
        syscall_rule->parent.hash = lttng_event_rule_kernel_syscall_hash;
+       syscall_rule->parent.mi_serialize = lttng_event_rule_kernel_syscall_mi_serialize;
 
        /* Default pattern is '*'. */
        status = lttng_event_rule_kernel_syscall_set_name_pattern(rule, "*");