+++ /dev/null
-/*
- * Copyright (C) 2020 Jonathan Rajotte <jonathan.rajotte-julien@efficios.com>
- *
- * SPDX-License-Identifier: LGPL-2.1-only
- *
- */
-
-#include "lttng/lttng-error.h"
-#include <common/error.h>
-#include <common/hashtable/hashtable.h>
-#include <common/hashtable/utils.h>
-#include <common/macros.h>
-#include <common/mi-lttng.h>
-#include <common/payload-view.h>
-#include <common/payload.h>
-#include <fcntl.h>
-#include <lttng/constant.h>
-#include <lttng/kernel-probe-internal.h>
-#include <lttng/kernel-probe.h>
-#include <sys/stat.h>
-#include <sys/types.h>
-#include <unistd.h>
-
-static
-int lttng_kernel_probe_location_address_serialize(
- const struct lttng_kernel_probe_location *location,
- struct lttng_payload *payload);
-
-static
-int lttng_kernel_probe_location_symbol_serialize(
- const struct lttng_kernel_probe_location *location,
- struct lttng_payload *payload);
-
-static
-bool lttng_kernel_probe_location_address_is_equal(
- const struct lttng_kernel_probe_location *a,
- const struct lttng_kernel_probe_location *b);
-
-static
-bool lttng_kernel_probe_location_symbol_is_equal(
- const struct lttng_kernel_probe_location *a,
- const struct lttng_kernel_probe_location *b);
-
-static
-unsigned long lttng_kernel_probe_location_address_hash(
- const struct lttng_kernel_probe_location *location);
-
-static
-unsigned long lttng_kernel_probe_location_symbol_hash(
- const struct lttng_kernel_probe_location *location);
-
-static
-enum lttng_error_code lttng_kernel_probe_location_address_mi_serialize(
- const struct lttng_kernel_probe_location *location,
- struct mi_writer *writer);
-
-static
-enum lttng_error_code lttng_kernel_probe_location_symbol_mi_serialize(
- const struct lttng_kernel_probe_location *location,
- struct mi_writer *writer);
-
-enum lttng_kernel_probe_location_type lttng_kernel_probe_location_get_type(
- const struct lttng_kernel_probe_location *location)
-{
- return location ? location->type :
- LTTNG_KERNEL_PROBE_LOCATION_TYPE_UNKNOWN;
-}
-
-static
-void lttng_kernel_probe_location_address_destroy(
- struct lttng_kernel_probe_location *location)
-{
- LTTNG_ASSERT(location);
- free(location);
-}
-
-static
-void lttng_kernel_probe_location_symbol_destroy(
- struct lttng_kernel_probe_location *location)
-{
- struct lttng_kernel_probe_location_symbol *location_symbol = NULL;
-
- LTTNG_ASSERT(location);
-
- location_symbol = container_of(location,
- struct lttng_kernel_probe_location_symbol,
- parent);
-
- LTTNG_ASSERT(location_symbol);
-
- free(location_symbol->symbol_name);
- free(location);
-}
-
-void lttng_kernel_probe_location_destroy(
- struct lttng_kernel_probe_location *location)
-{
- if (!location) {
- return;
- }
-
- switch (location->type) {
- case LTTNG_KERNEL_PROBE_LOCATION_TYPE_ADDRESS:
- lttng_kernel_probe_location_address_destroy(location);
- break;
- case LTTNG_KERNEL_PROBE_LOCATION_TYPE_SYMBOL_OFFSET:
- lttng_kernel_probe_location_symbol_destroy(location);
- break;
- default:
- abort();
- }
-}
-
-struct lttng_kernel_probe_location *
-lttng_kernel_probe_location_address_create(uint64_t address)
-{
- struct lttng_kernel_probe_location *ret = NULL;
- struct lttng_kernel_probe_location_address *location;
-
- location = zmalloc(sizeof(*location));
- if (!location) {
- PERROR("Error allocating userspace probe location.");
- goto end;
- }
-
- location->address = address;
-
- ret = &location->parent;
- ret->type = LTTNG_KERNEL_PROBE_LOCATION_TYPE_ADDRESS;
- ret->equal = lttng_kernel_probe_location_address_is_equal;
- ret->serialize = lttng_kernel_probe_location_address_serialize;
- ret->hash = lttng_kernel_probe_location_address_hash;
- ret->mi_serialize = lttng_kernel_probe_location_address_mi_serialize;
-
-end:
- return ret;
-}
-
-struct lttng_kernel_probe_location *
-lttng_kernel_probe_location_symbol_create(const char *symbol_name,
- uint64_t offset)
-{
- char *symbol_name_copy = NULL;
- struct lttng_kernel_probe_location *ret = NULL;
- struct lttng_kernel_probe_location_symbol *location;
-
- if (!symbol_name || strlen(symbol_name) >= LTTNG_SYMBOL_NAME_LEN) {
- goto error;
- }
-
- symbol_name_copy = strdup(symbol_name);
- if (!symbol_name_copy) {
- PERROR("Failed to copy symbol name '%s'", symbol_name);
- goto error;
- }
-
- location = zmalloc(sizeof(*location));
- if (!location) {
- PERROR("Failed to allocate kernel symbol probe location");
- goto error;
- }
-
- location->symbol_name = symbol_name_copy;
- location->offset = offset;
-
- ret = &location->parent;
- ret->type = LTTNG_KERNEL_PROBE_LOCATION_TYPE_SYMBOL_OFFSET;
- ret->equal = lttng_kernel_probe_location_symbol_is_equal;
- ret->serialize = lttng_kernel_probe_location_symbol_serialize;
- ret->hash = lttng_kernel_probe_location_symbol_hash;
- ret->mi_serialize = lttng_kernel_probe_location_symbol_mi_serialize;
- goto end;
-
-error:
- free(symbol_name_copy);
-end:
- return ret;
-}
-
-enum lttng_kernel_probe_location_status
-lttng_kernel_probe_location_address_get_address(
- const struct lttng_kernel_probe_location *location,
- uint64_t *offset)
-{
- enum lttng_kernel_probe_location_status ret =
- LTTNG_KERNEL_PROBE_LOCATION_STATUS_OK;
- struct lttng_kernel_probe_location_address *address_location;
-
- LTTNG_ASSERT(offset);
-
- if (!location || lttng_kernel_probe_location_get_type(location) !=
- LTTNG_KERNEL_PROBE_LOCATION_TYPE_ADDRESS) {
- ERR("Invalid argument(s) passed to '%s'", __FUNCTION__);
- ret = LTTNG_KERNEL_PROBE_LOCATION_STATUS_INVALID;
- goto end;
- }
-
- address_location = container_of(location,
- struct lttng_kernel_probe_location_address, parent);
- *offset = address_location->address;
-end:
- return ret;
-}
-
-const char *lttng_kernel_probe_location_symbol_get_name(
- const struct lttng_kernel_probe_location *location)
-{
- const char *ret = NULL;
- struct lttng_kernel_probe_location_symbol *symbol_location;
-
- if (!location || lttng_kernel_probe_location_get_type(location) !=
- LTTNG_KERNEL_PROBE_LOCATION_TYPE_SYMBOL_OFFSET) {
- ERR("Invalid argument(s) passed to '%s'", __FUNCTION__);
- goto end;
- }
-
- symbol_location = container_of(location,
- struct lttng_kernel_probe_location_symbol, parent);
- ret = symbol_location->symbol_name;
-end:
- return ret;
-}
-
-enum lttng_kernel_probe_location_status
-lttng_kernel_probe_location_symbol_get_offset(
- const struct lttng_kernel_probe_location *location,
- uint64_t *offset)
-{
- enum lttng_kernel_probe_location_status ret =
- LTTNG_KERNEL_PROBE_LOCATION_STATUS_OK;
- struct lttng_kernel_probe_location_symbol *symbol_location;
-
- LTTNG_ASSERT(offset);
-
- if (!location || lttng_kernel_probe_location_get_type(location) !=
- LTTNG_KERNEL_PROBE_LOCATION_TYPE_SYMBOL_OFFSET) {
- ERR("Invalid argument(s) passed to '%s'", __FUNCTION__);
- ret = LTTNG_KERNEL_PROBE_LOCATION_STATUS_INVALID;
- goto end;
- }
-
- symbol_location = container_of(location,
- struct lttng_kernel_probe_location_symbol, parent);
- *offset = symbol_location->offset;
-end:
- return ret;
-}
-
-static
-int lttng_kernel_probe_location_symbol_serialize(
- const struct lttng_kernel_probe_location *location,
- struct lttng_payload *payload)
-{
- int ret;
- size_t symbol_name_len;
- size_t original_payload_size;
- struct lttng_kernel_probe_location_symbol *location_symbol;
- struct lttng_kernel_probe_location_symbol_comm location_symbol_comm;
-
- if (!location || !payload) {
- ERR("Invalid argument(s) passed to '%s'", __FUNCTION__);
- ret = -LTTNG_ERR_INVALID;
- goto end;
- }
-
- LTTNG_ASSERT(lttng_kernel_probe_location_get_type(location) ==
- LTTNG_KERNEL_PROBE_LOCATION_TYPE_SYMBOL_OFFSET);
-
- original_payload_size = payload->buffer.size;
- location_symbol = container_of(location,
- struct lttng_kernel_probe_location_symbol, parent);
-
- if (!location_symbol->symbol_name) {
- ret = -LTTNG_ERR_INVALID;
- goto end;
- }
-
- symbol_name_len = strlen(location_symbol->symbol_name);
- if (symbol_name_len == 0) {
- ret = -LTTNG_ERR_INVALID;
- goto end;
- }
-
- location_symbol_comm.symbol_len = symbol_name_len + 1;
- location_symbol_comm.offset = location_symbol->offset;
-
- ret = lttng_dynamic_buffer_append(&payload->buffer,
- &location_symbol_comm, sizeof(location_symbol_comm));
- if (ret) {
- ret = -LTTNG_ERR_INVALID;
- goto end;
- }
-
- ret = lttng_dynamic_buffer_append(&payload->buffer,
- location_symbol->symbol_name,
- location_symbol_comm.symbol_len);
- if (ret) {
- ret = -LTTNG_ERR_INVALID;
- goto end;
- }
-
- ret = (int) (payload->buffer.size - original_payload_size);
-end:
- return ret;
-}
-
-static
-int lttng_kernel_probe_location_address_serialize(
- const struct lttng_kernel_probe_location *location,
- struct lttng_payload *payload)
-{
- int ret;
- size_t original_payload_size;
- struct lttng_kernel_probe_location_address *location_address;
- struct lttng_kernel_probe_location_address_comm location_address_comm;
-
- LTTNG_ASSERT(location);
- LTTNG_ASSERT(lttng_kernel_probe_location_get_type(location) ==
- LTTNG_KERNEL_PROBE_LOCATION_TYPE_ADDRESS);
-
- original_payload_size = payload->buffer.size;
- location_address = container_of(location,
- struct lttng_kernel_probe_location_address,
- parent);
-
- location_address_comm.address = location_address->address;
-
- ret = lttng_dynamic_buffer_append(&payload->buffer,
- &location_address_comm,
- sizeof(location_address_comm));
- if (ret) {
- ret = -LTTNG_ERR_INVALID;
- goto end;
- }
-
- ret = (int) (payload->buffer.size - original_payload_size);
-end:
- return ret;
-}
-
-int lttng_kernel_probe_location_serialize(
- const struct lttng_kernel_probe_location *location,
- struct lttng_payload *payload)
-{
- int ret;
- size_t original_payload_size;
- struct lttng_kernel_probe_location_comm location_generic_comm = {};
-
- if (!location || !payload) {
- ERR("Invalid argument(s) passed to '%s'", __FUNCTION__);
- ret = -LTTNG_ERR_INVALID;
- goto end;
- }
-
- original_payload_size = payload->buffer.size;
- location_generic_comm.type = (int8_t) location->type;
- ret = lttng_dynamic_buffer_append(&payload->buffer,
- &location_generic_comm,
- sizeof(location_generic_comm));
- if (ret) {
- goto end;
- }
-
- ret = location->serialize(location, payload);
- if (ret < 0) {
- goto end;
- }
-
- ret = (int) (payload->buffer.size - original_payload_size);
-end:
- return ret;
-}
-
-static
-int lttng_kernel_probe_location_symbol_create_from_payload(
- struct lttng_payload_view *view,
- struct lttng_kernel_probe_location **location)
-{
- struct lttng_kernel_probe_location_symbol_comm *location_symbol_comm;
- const char *symbol_name_src;
- ssize_t ret = 0;
- size_t expected_size;
-
- LTTNG_ASSERT(location);
-
- if (view->buffer.size < sizeof(*location_symbol_comm)) {
- ret = -LTTNG_ERR_INVALID;
- goto end;
- }
-
- location_symbol_comm =
- (typeof(location_symbol_comm)) view->buffer.data;
-
- expected_size = sizeof(*location_symbol_comm) +
- location_symbol_comm->symbol_len;
-
- if (view->buffer.size < expected_size) {
- ret = -LTTNG_ERR_INVALID;
- goto end;
- }
-
- symbol_name_src = view->buffer.data + sizeof(*location_symbol_comm);
-
- if (!lttng_buffer_view_contains_string(&view->buffer, symbol_name_src,
- location_symbol_comm->symbol_len)) {
- ret = -LTTNG_ERR_INVALID;
- goto end;
- }
-
- *location = lttng_kernel_probe_location_symbol_create(
- symbol_name_src, location_symbol_comm->offset);
- if (!(*location)) {
- ret = -LTTNG_ERR_INVALID;
- goto end;
- }
-
- ret = (ssize_t) expected_size;
-end:
- return ret;
-}
-
-static
-ssize_t lttng_kernel_probe_location_address_create_from_payload(
- struct lttng_payload_view *view,
- struct lttng_kernel_probe_location **location)
-{
- struct lttng_kernel_probe_location_address_comm *location_address_comm;
- ssize_t ret = 0;
- size_t expected_size;
-
- LTTNG_ASSERT(location);
-
- expected_size = sizeof(*location_address_comm);
-
- if (view->buffer.size < expected_size) {
- ret = -LTTNG_ERR_INVALID;
- goto end;
- }
-
- location_address_comm =
- (typeof(location_address_comm)) view->buffer.data;
-
- *location = lttng_kernel_probe_location_address_create(location_address_comm->address);
- if (!(*location)) {
- ret = -LTTNG_ERR_INVALID;
- goto end;
- }
-
- ret = (size_t) expected_size;
-end:
- return ret;
-}
-
-ssize_t lttng_kernel_probe_location_create_from_payload(
- struct lttng_payload_view *view,
- struct lttng_kernel_probe_location **location)
-{
- enum lttng_kernel_probe_location_type type;
- ssize_t consumed = 0;
- ssize_t ret;
- const struct lttng_kernel_probe_location_comm *probe_location_comm;
- const struct lttng_payload_view probe_location_comm_view =
- lttng_payload_view_from_view(
- view, 0, sizeof(*probe_location_comm));
-
- LTTNG_ASSERT(view);
- LTTNG_ASSERT(location);
-
- if (!lttng_payload_view_is_valid(&probe_location_comm_view)) {
- ret = -LTTNG_ERR_INVALID;
- goto end;
- }
-
- probe_location_comm = (typeof(probe_location_comm)) probe_location_comm_view.buffer.data;
- type = (enum lttng_kernel_probe_location_type) probe_location_comm->type;
- consumed += sizeof(*probe_location_comm);
-
- switch (type) {
- case LTTNG_KERNEL_PROBE_LOCATION_TYPE_SYMBOL_OFFSET:
- {
- struct lttng_payload_view location_view =
- lttng_payload_view_from_view(
- view, consumed, -1);
-
- ret = lttng_kernel_probe_location_symbol_create_from_payload(
- &location_view, location);
- break;
- }
- case LTTNG_KERNEL_PROBE_LOCATION_TYPE_ADDRESS:
- {
- struct lttng_payload_view location_view =
- lttng_payload_view_from_view(view, consumed, -1);
-
- ret = lttng_kernel_probe_location_address_create_from_payload(
- &location_view, location);
- break;
- }
- default:
- ret = -LTTNG_ERR_INVALID;
- break;
- }
-
- if (ret < 0) {
- ret = -LTTNG_ERR_INVALID;
- goto end;
- }
-
- ret += consumed;
-
-end:
- return ret;
-}
-
-static
-unsigned long lttng_kernel_probe_location_address_hash(
- const struct lttng_kernel_probe_location *location)
-{
- unsigned long hash = hash_key_ulong(
- (void *) LTTNG_KERNEL_PROBE_LOCATION_TYPE_ADDRESS,
- lttng_ht_seed);
- struct lttng_kernel_probe_location_address *address_location =
- container_of(location, typeof(*address_location),
- parent);
-
- hash ^= hash_key_u64(&address_location->address, lttng_ht_seed);
-
- return hash;
-}
-
-static
-bool lttng_kernel_probe_location_address_is_equal(
- const struct lttng_kernel_probe_location *_a,
- const struct lttng_kernel_probe_location *_b)
-{
- bool is_equal = false;
- struct lttng_kernel_probe_location_address *a, *b;
-
- a = container_of(_a, struct lttng_kernel_probe_location_address,
- parent);
- b = container_of(_b, struct lttng_kernel_probe_location_address,
- parent);
-
- if (a->address != b->address) {
- goto end;
- }
-
- is_equal = true;
-
-end:
- return is_equal;
-}
-
-static
-unsigned long lttng_kernel_probe_location_symbol_hash(
- const struct lttng_kernel_probe_location *location)
-{
- unsigned long hash = hash_key_ulong(
- (void *) LTTNG_KERNEL_PROBE_LOCATION_TYPE_SYMBOL_OFFSET,
- lttng_ht_seed);
- struct lttng_kernel_probe_location_symbol *symbol_location =
- container_of(location, typeof(*symbol_location),
- parent);
-
- hash ^= hash_key_str(symbol_location->symbol_name, lttng_ht_seed);
- hash ^= hash_key_u64(&symbol_location->offset, lttng_ht_seed);
-
- return hash;
-}
-
-static
-bool lttng_kernel_probe_location_symbol_is_equal(
- const struct lttng_kernel_probe_location *_a,
- const struct lttng_kernel_probe_location *_b)
-{
- bool is_equal = false;
- struct lttng_kernel_probe_location_symbol *a, *b;
-
- a = container_of(_a, struct lttng_kernel_probe_location_symbol,
- parent);
- b = container_of(_b, struct lttng_kernel_probe_location_symbol,
- parent);
-
- LTTNG_ASSERT(a->symbol_name);
- LTTNG_ASSERT(b->symbol_name);
- if (strcmp(a->symbol_name, b->symbol_name)) {
- goto end;
- }
-
- if (a->offset != b->offset) {
- goto end;
- }
-
- is_equal = true;
-
-end:
- return is_equal;
-}
-
-bool lttng_kernel_probe_location_is_equal(
- const struct lttng_kernel_probe_location *a,
- const struct lttng_kernel_probe_location *b)
-{
- bool is_equal = false;
-
- if (!a || !b) {
- goto end;
- }
-
- if (a == b) {
- is_equal = true;
- goto end;
- }
-
- if (a->type != b->type) {
- goto end;
- }
-
- is_equal = a->equal ? a->equal(a, b) : true;
-end:
- return is_equal;
-}
-
-static struct lttng_kernel_probe_location *
-lttng_kernel_probe_location_symbol_copy(
- const struct lttng_kernel_probe_location *location)
-{
- struct lttng_kernel_probe_location *new_location = NULL;
- struct lttng_kernel_probe_location_symbol *symbol_location;
- enum lttng_kernel_probe_location_status status;
- const char *symbol_name = NULL;
- uint64_t offset;
-
- LTTNG_ASSERT(location);
- LTTNG_ASSERT(location->type == LTTNG_KERNEL_PROBE_LOCATION_TYPE_SYMBOL_OFFSET);
- symbol_location = container_of(
- location, typeof(*symbol_location), parent);
-
- /* Get probe location offset */
- status = lttng_kernel_probe_location_symbol_get_offset(location, &offset);
- if (status != LTTNG_KERNEL_PROBE_LOCATION_STATUS_OK) {
- ERR("Get kernel probe location offset failed.");
- goto error;
- }
-
- symbol_name = lttng_kernel_probe_location_symbol_get_name(location);
- if (!symbol_name) {
- ERR("Kernel probe symbol name is NULL.");
- goto error;
- }
-
- /* Create the probe_location */
- new_location = lttng_kernel_probe_location_symbol_create(
- symbol_name, offset);
-
- goto end;
-
-error:
- new_location = NULL;
-end:
- return new_location;
-}
-static struct lttng_kernel_probe_location *
-lttng_kernel_probe_location_address_copy(
- const struct lttng_kernel_probe_location *location)
-{
- struct lttng_kernel_probe_location *new_location = NULL;
- struct lttng_kernel_probe_location_address *address_location;
- enum lttng_kernel_probe_location_status status;
- uint64_t address;
-
- LTTNG_ASSERT(location);
- LTTNG_ASSERT(location->type == LTTNG_KERNEL_PROBE_LOCATION_TYPE_ADDRESS);
- address_location = container_of(
- location, typeof(*address_location), parent);
-
-
- /* Get probe location fields */
- status = lttng_kernel_probe_location_address_get_address(location, &address);
- if (status != LTTNG_KERNEL_PROBE_LOCATION_STATUS_OK) {
- ERR("Get kernel probe address failed.");
- goto error;
- }
-
- /* Create the probe_location */
- new_location = lttng_kernel_probe_location_address_create(address);
-
- goto end;
-
-error:
- new_location = NULL;
-end:
- return new_location;
-}
-
-struct lttng_kernel_probe_location *lttng_kernel_probe_location_copy(
- const struct lttng_kernel_probe_location *location)
-{
- struct lttng_kernel_probe_location *new_location = NULL;
- enum lttng_kernel_probe_location_type type;
-
- if (!location) {
- goto err;
- }
-
- type = lttng_kernel_probe_location_get_type(location);
- switch (type) {
- case LTTNG_KERNEL_PROBE_LOCATION_TYPE_ADDRESS:
- new_location =
- lttng_kernel_probe_location_address_copy(location);
- if (!new_location) {
- goto err;
- }
- break;
- case LTTNG_KERNEL_PROBE_LOCATION_TYPE_SYMBOL_OFFSET:
- new_location =
- lttng_kernel_probe_location_symbol_copy(location);
- if (!new_location) {
- goto err;
- }
- break;
- default:
- new_location = NULL;
- goto err;
- }
-err:
- return new_location;
-}
-
-unsigned long lttng_kernel_probe_location_hash(
- const struct lttng_kernel_probe_location *location)
-{
- return location->hash(location);
-}
-
-static
-enum lttng_error_code lttng_kernel_probe_location_address_mi_serialize(
- const struct lttng_kernel_probe_location *location,
- struct mi_writer *writer)
-{
- int ret;
- enum lttng_error_code ret_code;
- enum lttng_kernel_probe_location_status status;
- uint64_t address;
-
- LTTNG_ASSERT(location);
- LTTNG_ASSERT(writer);
- LTTNG_ASSERT(location->type == LTTNG_KERNEL_PROBE_LOCATION_TYPE_ADDRESS);
-
- status = lttng_kernel_probe_location_address_get_address(
- location, &address);
- LTTNG_ASSERT(status == LTTNG_KERNEL_PROBE_LOCATION_STATUS_OK);
-
- /* Open kernel probe location address element. */
- ret = mi_lttng_writer_open_element(
- writer, mi_lttng_element_kernel_probe_location_address);
- if (ret) {
- goto mi_error;
- }
-
- ret = mi_lttng_writer_write_element_unsigned_int(writer,
- mi_lttng_element_kernel_probe_location_address_address,
- address);
- if (ret) {
- goto mi_error;
- }
-
- /* Close kernel probe location address element. */
- 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;
-}
-
-static
-enum lttng_error_code lttng_kernel_probe_location_symbol_mi_serialize(
- const struct lttng_kernel_probe_location *location,
- struct mi_writer *writer)
-{
- int ret;
- enum lttng_error_code ret_code;
- enum lttng_kernel_probe_location_status status;
- const char *name = NULL;
- uint64_t offset;
-
- LTTNG_ASSERT(location);
- LTTNG_ASSERT(writer);
- LTTNG_ASSERT(location->type ==
- LTTNG_KERNEL_PROBE_LOCATION_TYPE_SYMBOL_OFFSET);
-
- name = lttng_kernel_probe_location_symbol_get_name(location);
- LTTNG_ASSERT(name);
-
- status = lttng_kernel_probe_location_symbol_get_offset(
- location, &offset);
- LTTNG_ASSERT(status == LTTNG_KERNEL_PROBE_LOCATION_STATUS_OK);
-
- /* Open kernel probe location symbol offset element. */
- ret = mi_lttng_writer_open_element(writer,
- mi_lttng_element_kernel_probe_location_symbol_offset);
- if (ret) {
- goto mi_error;
- }
-
- /* Name. */
- ret = mi_lttng_writer_write_element_string(writer,
- mi_lttng_element_kernel_probe_location_symbol_offset_name,
- name);
- if (ret) {
- goto mi_error;
- }
-
- /* Offset. */
- ret = mi_lttng_writer_write_element_unsigned_int(writer,
- mi_lttng_element_kernel_probe_location_symbol_offset_offset,
- offset);
- if (ret) {
- goto mi_error;
- }
-
- /* Close kernel probe location symbol offset element. */
- 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;
-}
-
-enum lttng_error_code lttng_kernel_probe_location_mi_serialize(
- const struct lttng_kernel_probe_location *location,
- struct mi_writer *writer)
-{
- int ret;
- enum lttng_error_code ret_code;
-
- LTTNG_ASSERT(location);
- LTTNG_ASSERT(writer);
-
- /* Open kernel probe location element. */
- ret = mi_lttng_writer_open_element(
- writer, mi_lttng_element_kernel_probe_location);
- if (ret) {
- goto mi_error;
- }
-
- /* Serialize the location sub type. */
- ret_code = location->mi_serialize(location, writer);
- if (ret_code != LTTNG_OK) {
- goto end;
- }
-
- /* Close kernel probe location element. */
- 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;
-}
projects / lttng-tools.git / blobdiff