+++ /dev/null
-/*
- * Copyright (C) 2020 Simon Marchi <simon.marchi@efficios.com>
- *
- * SPDX-License-Identifier: GPL-2.0-only
- *
- */
-
-#include <common/error.h>
-#include <common/mi-lttng.h>
-#include <common/payload-view.h>
-#include <common/payload.h>
-#include <common/snapshot.h>
-#include <lttng/snapshot-internal.h>
-#include <lttng/snapshot.h>
-
-#include <stdlib.h>
-
-LTTNG_HIDDEN
-bool lttng_snapshot_output_validate(const struct lttng_snapshot_output *output)
-{
- bool valid = false;
- size_t len;
-
- /*
- * It is mandatory to have a ctrl_url. If there is only one output
- * URL (in the net://, net6:// or file:// form), it will be in this
- * field.
- */
- len = lttng_strnlen(output->ctrl_url, sizeof(output->ctrl_url));
- if (len == 0 || len >= sizeof(output->ctrl_url)) {
- goto end;
- }
-
- len = lttng_strnlen(output->data_url, sizeof(output->data_url));
- if (len >= sizeof(output->data_url)) {
- goto end;
- }
-
- len = lttng_strnlen(output->name, sizeof(output->name));
- if (len >= sizeof(output->name)) {
- goto end;
- }
-
- valid = true;
-
-end:
- return valid;
-}
-
-LTTNG_HIDDEN
-bool lttng_snapshot_output_is_equal(
- const struct lttng_snapshot_output *a,
- const struct lttng_snapshot_output *b)
-{
- bool equal = false;
-
- LTTNG_ASSERT(a);
- LTTNG_ASSERT(b);
-
- if (a->max_size != b->max_size) {
- goto end;
- }
-
- if (strcmp(a->name, b->name) != 0) {
- goto end;
- }
-
- if (strcmp(a->ctrl_url, b->ctrl_url) != 0) {
- goto end;
- }
-
- if (strcmp(a->data_url, b->data_url) != 0) {
- goto end;
- }
-
- equal = true;
-
-end:
- return equal;
-}
-
-/*
- * This is essentially the same as `struct lttng_snapshot_output`, but packed.
- */
-struct lttng_snapshot_output_comm {
- uint32_t id;
- uint64_t max_size;
- char name[LTTNG_NAME_MAX];
- char ctrl_url[PATH_MAX];
- char data_url[PATH_MAX];
-} LTTNG_PACKED;
-
-LTTNG_HIDDEN
-int lttng_snapshot_output_serialize(
- const struct lttng_snapshot_output *output,
- struct lttng_payload *payload)
-{
- struct lttng_snapshot_output_comm comm;
- int ret;
-
- comm.id = output->id;
- comm.max_size = output->max_size;
-
- ret = lttng_strncpy(comm.name, output->name, sizeof(comm.name));
- if (ret) {
- goto end;
- }
-
- ret = lttng_strncpy(
- comm.ctrl_url, output->ctrl_url, sizeof(comm.ctrl_url));
- if (ret) {
- goto end;
- }
-
- ret = lttng_strncpy(
- comm.data_url, output->data_url, sizeof(comm.data_url));
- if (ret) {
- goto end;
- }
-
- ret = lttng_dynamic_buffer_append(
- &payload->buffer, &comm, sizeof(comm));
- if (ret) {
- goto end;
- }
-
-end:
- return ret;
-}
-
-LTTNG_HIDDEN
-ssize_t lttng_snapshot_output_create_from_payload(
- struct lttng_payload_view *view,
- struct lttng_snapshot_output **output_p)
-{
- const struct lttng_snapshot_output_comm *comm;
- struct lttng_snapshot_output *output = NULL;
- int ret;
-
- if (view->buffer.size != sizeof(*comm)) {
- ret = -1;
- goto end;
- }
-
- output = lttng_snapshot_output_create();
- if (!output) {
- ret = -1;
- goto end;
- }
-
- comm = (typeof(comm)) view->buffer.data;
-
- output->id = comm->id;
- output->max_size = comm->max_size;
-
- ret = lttng_strncpy(output->name, comm->name, sizeof(output->name));
- if (ret) {
- goto end;
- }
-
- ret = lttng_strncpy(output->ctrl_url, comm->ctrl_url,
- sizeof(output->ctrl_url));
- if (ret) {
- goto end;
- }
-
- ret = lttng_strncpy(output->data_url, comm->data_url,
- sizeof(output->data_url));
- if (ret) {
- goto end;
- }
-
- *output_p = output;
- output = NULL;
- ret = sizeof(*comm);
-
-end:
- lttng_snapshot_output_destroy(output);
- return ret;
-}
-
-LTTNG_HIDDEN
-enum lttng_error_code lttng_snapshot_output_mi_serialize(
- const struct lttng_snapshot_output *output,
- struct mi_writer *writer)
-{
- int ret;
- enum lttng_error_code ret_code;
-
- LTTNG_ASSERT(output);
- LTTNG_ASSERT(writer);
-
- /* Open output element. */
- ret = mi_lttng_writer_open_element(writer,
- mi_lttng_element_action_snapshot_session_output);
- if (ret) {
- goto mi_error;
- }
-
- /* Name. */
- if (strnlen(output->name, LTTNG_NAME_MAX) != 0) {
- ret = mi_lttng_writer_write_element_string(
- writer, config_element_name, output->name);
- if (ret) {
- goto mi_error;
- }
- }
-
- /* Control url (always present). */
- ret = mi_lttng_writer_write_element_string(writer,
- mi_lttng_element_snapshot_ctrl_url, output->ctrl_url);
- if (ret) {
- goto mi_error;
- }
-
- /* Data url (optional). */
- if (strnlen(output->data_url, PATH_MAX) != 0) {
- ret = mi_lttng_writer_write_element_string(writer,
- mi_lttng_element_snapshot_data_url,
- output->data_url);
- if (ret) {
- goto mi_error;
- }
- }
-
- /*
- * Maximum size in bytes of the snapshot meaning the total size of all
- * streams combined. A value of 0 means unlimited. The default value is
- * UINT64_MAX which also means unlimited in practice.
- *
- * The value is not serialized when it is set to either of those values
- * to normalize them to '0'.
- */
- if (output->max_size > 0 && output->max_size != UINT64_MAX) {
- /* Total size of all stream combined. */
- ret = mi_lttng_writer_write_element_unsigned_int(writer,
- mi_lttng_element_snapshot_max_size,
- output->max_size);
- if (ret) {
- goto mi_error;
- }
- }
-
- /* Close output 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