(lttng_condition_get_type(condition) == \
LTTNG_CONDITION_TYPE_ON_EVENT)
-typedef LTTNG_OPTIONAL(uint64_t) optional_uint64;
-
static bool is_on_event_evaluation(const struct lttng_evaluation *evaluation)
{
enum lttng_condition_type type = lttng_evaluation_get_type(evaluation);
enum lttng_condition_status status;
/* Used for iteration and communication (size matters). */
uint32_t i, capture_descr_count;
- LTTNG_OPTIONAL_COMM(typeof(on_event_condition->error_count.value)) error_count_comm;
if (!condition || !IS_ON_EVENT_CONDITION(condition)) {
ret = -1;
goto end;
}
- error_count_comm = (typeof(error_count_comm)) {
- .is_set = on_event_condition->error_count.is_set,
- .value = on_event_condition->error_count.value,
- };
-
- {
- char error_count_value_str[MAX_INT_DEC_LEN(on_event_condition->error_count.value)];
- const int fmt_ret = snprintf(error_count_value_str,
- sizeof(error_count_value_str), "%" PRIu64,
- on_event_condition->error_count.value);
-
- assert(fmt_ret > 0);
- DBG("Serializing event rule condition's error count: value = %s",
- on_event_condition->error_count.is_set ?
- error_count_value_str :
- "(unset)");
- }
-
- ret = lttng_dynamic_buffer_append(&payload->buffer, &error_count_comm,
- sizeof(error_count_comm));
- if (ret) {
- goto end;
- }
-
status = lttng_condition_on_event_get_capture_descriptor_count(
condition, &capture_descr_count);
if (status != LTTNG_CONDITION_STATUS_OK) {
return ret;
}
-static
-int optional_uint_from_buffer(
- const struct lttng_buffer_view *view,
- size_t inner_value_size,
- size_t *offset,
- optional_uint64 *value)
-{
- int ret;
-
- /*
- * Those cases are identical except for the optional's inner type width.
- */
- switch (inner_value_size) {
- case sizeof(uint8_t):
- {
- LTTNG_OPTIONAL_COMM(uint8_t) *value_comm;
- const struct lttng_buffer_view optional_uint_view =
- lttng_buffer_view_from_view(view, *offset,
- sizeof(*value_comm));
-
- if (!lttng_buffer_view_is_valid(&optional_uint_view)) {
- ret = -1;
- goto end;
- }
-
- value_comm = (typeof(value_comm)) optional_uint_view.data;
- *value = (typeof(*value)) {
- .is_set = value_comm->is_set,
- .value = (uint64_t) value_comm->value,
- };
-
- *offset += sizeof(*value_comm);
- break;
- }
- case sizeof(uint16_t):
- {
- LTTNG_OPTIONAL_COMM(uint16_t) *value_comm;
- const struct lttng_buffer_view optional_uint_view =
- lttng_buffer_view_from_view(view, *offset,
- sizeof(*value_comm));
-
- if (!lttng_buffer_view_is_valid(&optional_uint_view)) {
- ret = -1;
- goto end;
- }
-
- value_comm = (typeof(value_comm)) optional_uint_view.data;
- *value = (typeof(*value)) {
- .is_set = value_comm->is_set,
- .value = (uint64_t) value_comm->value,
- };
-
- *offset += sizeof(*value_comm);
- break;
- }
- case sizeof(uint32_t):
- {
- LTTNG_OPTIONAL_COMM(uint32_t) *value_comm;
- const struct lttng_buffer_view optional_uint_view =
- lttng_buffer_view_from_view(view, *offset,
- sizeof(*value_comm));
-
- if (!lttng_buffer_view_is_valid(&optional_uint_view)) {
- ret = -1;
- goto end;
- }
-
- value_comm = (typeof(value_comm)) optional_uint_view.data;
- *value = (typeof(*value)) {
- .is_set = value_comm->is_set,
- .value = (uint64_t) value_comm->value,
- };
-
- *offset += sizeof(*value_comm);
- break;
- }
- case sizeof(uint64_t):
- {
- LTTNG_OPTIONAL_COMM(uint64_t) *value_comm;
- const struct lttng_buffer_view optional_uint_view =
- lttng_buffer_view_from_view(view, *offset,
- sizeof(*value_comm));
-
- if (!lttng_buffer_view_is_valid(&optional_uint_view)) {
- ret = -1;
- goto end;
- }
-
- value_comm = (typeof(value_comm)) optional_uint_view.data;
- *value = (typeof(*value)) {
- .is_set = value_comm->is_set,
- .value = (uint64_t) value_comm->value,
- };
-
- *offset += sizeof(*value_comm);
- break;
- }
- default:
- abort();
- }
-
- ret = 0;
-end:
- return ret;
-}
-
static
const char *str_from_buffer(const struct lttng_buffer_view *view,
size_t *offset)
break;
}
default:
- abort();
+ ERR("Invalid event expression type encoutered while deserializing event expression: type = %" PRIu64,
+ type);
+ goto error;
}
goto end;
struct lttng_payload_view *view,
struct lttng_condition **_condition)
{
- int optional_ret;
ssize_t consumed_length;
size_t offset = 0;
ssize_t event_rule_length;
uint32_t i, capture_descr_count;
- optional_uint64 error_count;
struct lttng_condition *condition = NULL;
struct lttng_event_rule *event_rule = NULL;
offset += event_rule_length;
- /* Error count. */
- optional_ret = optional_uint_from_buffer(&view->buffer,
- sizeof(error_count.value), &offset,
- &error_count);
- if (optional_ret) {
- goto error;
- }
-
/* Create condition (no capture descriptors yet) at this point */
condition = lttng_condition_on_event_create(event_rule);
if (!condition) {
goto error;
}
- if (error_count.is_set) {
- lttng_condition_on_event_set_error_count(
- condition, error_count.value);
- }
-
/* Capture descriptor count. */
assert(event_rule_length >= 0);
capture_descr_count = uint_from_buffer(&view->buffer, sizeof(uint32_t), &offset);
return LTTNG_OPTIONAL_GET(on_event_cond->error_counter_index);
}
-LTTNG_HIDDEN
-void lttng_condition_on_event_set_error_count(struct lttng_condition *condition,
- uint64_t error_count)
-{
- struct lttng_condition_on_event *on_event_cond =
- container_of(condition,
- struct lttng_condition_on_event, parent);
-
- LTTNG_OPTIONAL_SET(&on_event_cond->error_count, error_count);
-}
-
-uint64_t lttng_condition_on_event_get_error_count(
- const struct lttng_condition *condition)
-{
- const struct lttng_condition_on_event *on_event_cond =
- container_of(condition,
- const struct lttng_condition_on_event, parent);
-
- return LTTNG_OPTIONAL_GET(on_event_cond->error_count);
-}
-
enum lttng_condition_status
lttng_condition_on_event_append_capture_descriptor(
struct lttng_condition *condition,
struct lttng_evaluation **_evaluation)
{
ssize_t ret, offset = 0;
- const char *trigger_name;
struct lttng_evaluation *evaluation = NULL;
- const struct lttng_evaluation_on_event_comm *header;
- const struct lttng_payload_view header_view =
- lttng_payload_view_from_view(
- view, 0, sizeof(*header));
uint32_t capture_payload_size;
const char *capture_payload = NULL;
goto error;
}
- if (!lttng_payload_view_is_valid(&header_view)) {
- ERR("Failed to initialize from malformed event rule evaluation: buffer too short to contain header");
- ret = -1;
- goto error;
- }
-
- header = (typeof(header)) header_view.buffer.data;
-
- /* Map the originating trigger's name. */
- offset += sizeof(*header);
- {
- const struct lttng_payload_view current_view =
- lttng_payload_view_from_view(view, offset,
- header->trigger_name_length);
-
- if (!lttng_payload_view_is_valid(¤t_view)) {
- ERR("Failed to initialize from malformed event rule evaluation: buffer too short to contain trigger name");
- ret = -1;
- goto error;
- }
-
- trigger_name = current_view.buffer.data;
- if (!lttng_buffer_view_contains_string(¤t_view.buffer,
- trigger_name, header->trigger_name_length)) {
- ERR("Failed to initialize from malformed event rule evaluation: invalid trigger name");
- ret = -1;
- goto error;
- }
- }
-
- offset += header->trigger_name_length;
{
const struct lttng_payload_view current_view =
lttng_payload_view_from_view(view, offset, -1);
capture_payload = current_view.buffer.data;
}
- evaluation = lttng_evaluation_on_event_create(condition, trigger_name,
+ evaluation = lttng_evaluation_on_event_create(condition,
capture_payload, capture_payload_size, true);
if (!evaluation) {
ret = -1;
{
int ret = 0;
struct lttng_evaluation_on_event *hit;
- struct lttng_evaluation_on_event_comm comm;
uint32_t capture_payload_size;
hit = container_of(
evaluation, struct lttng_evaluation_on_event, parent);
- assert(hit->name);
- comm.trigger_name_length = strlen(hit->name) + 1;
-
- ret = lttng_dynamic_buffer_append(
- &payload->buffer, &comm, sizeof(comm));
- if (ret) {
- goto end;
- }
-
- ret = lttng_dynamic_buffer_append(
- &payload->buffer, hit->name, comm.trigger_name_length);
- if (ret) {
- goto end;
- }
-
capture_payload_size = (uint32_t) hit->capture_payload.size;
ret = lttng_dynamic_buffer_append(&payload->buffer, &capture_payload_size,
sizeof(capture_payload_size));
hit = container_of(
evaluation, struct lttng_evaluation_on_event, parent);
- free(hit->name);
lttng_dynamic_buffer_reset(&hit->capture_payload);
lttng_event_field_value_destroy(hit->captured_values);
free(hit);
LTTNG_HIDDEN
struct lttng_evaluation *lttng_evaluation_on_event_create(
const struct lttng_condition_on_event *condition,
- const char *trigger_name,
const char *capture_payload, size_t capture_payload_size,
bool decode_capture_payload)
{
goto error;
}
- hit->name = strdup(trigger_name);
- if (!hit->name) {
- goto error;
- }
-
lttng_dynamic_buffer_init(&hit->capture_payload);
if (capture_payload) {
return status;
}
-enum lttng_evaluation_status lttng_evaluation_on_event_get_trigger_name(
- const struct lttng_evaluation *evaluation, const char **name)
-{
- struct lttng_evaluation_on_event *hit;
- enum lttng_evaluation_status status = LTTNG_EVALUATION_STATUS_OK;
-
- if (!evaluation || !is_on_event_evaluation(evaluation) || !name) {
- status = LTTNG_EVALUATION_STATUS_INVALID;
- goto end;
- }
-
- hit = container_of(
- evaluation, struct lttng_evaluation_on_event, parent);
- *name = hit->name;
-end:
- return status;
-}
-
LTTNG_HIDDEN
enum lttng_error_code
lttng_condition_on_event_generate_capture_descriptor_bytecode(
projects / lttng-tools.git / blobdiff