* Linux Trace Toolkit Control Library
*
* Copyright (C) 2011 David Goulet <david.goulet@polymtl.ca>
- * Copyright (C) 2016 - Jérémie Galarneau <jeremie.galarneau@efficios.com>
+ * Copyright (C) 2016 Jérémie Galarneau <jeremie.galarneau@efficios.com>
*
- * This library is free software; you can redistribute it and/or modify it
- * under the terms of the GNU Lesser General Public License, version 2.1 only,
- * as published by the Free Software Foundation.
+ * SPDX-License-Identifier: LGPL-2.1-only
*
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public License
- * along with this library; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#define _LGPL_SOURCE
#include <common/common.h>
#include <common/compat/string.h>
#include <common/defaults.h>
+#include <common/dynamic-buffer.h>
+#include <common/sessiond-comm/payload.h>
+#include <common/sessiond-comm/payload-view.h>
#include <common/sessiond-comm/sessiond-comm.h>
+#include <common/tracker.h>
#include <common/uri.h>
#include <common/utils.h>
-#include <common/dynamic-buffer.h>
-#include <lttng/lttng.h>
-#include <lttng/health-internal.h>
-#include <lttng/trigger/trigger-internal.h>
-#include <lttng/endpoint.h>
#include <lttng/channel-internal.h>
+#include <lttng/destruction-handle.h>
+#include <lttng/endpoint.h>
#include <lttng/event-internal.h>
-#include <lttng/userspace-probe-internal.h>
-#include <lttng/session-internal.h>
+#include <lttng/health-internal.h>
+#include <lttng/lttng.h>
#include <lttng/session-descriptor-internal.h>
-#include <lttng/destruction-handle.h>
-#include <lttng/tracker-internal.h>
+#include <lttng/session-internal.h>
+#include <lttng/trigger/trigger-internal.h>
+#include <lttng/userspace-probe-internal.h>
#include "filter/filter-ast.h"
#include "filter/filter-parser.h"
/* Add loglevel filtering if any for the JUL domain. */
if (ev->loglevel_type != LTTNG_EVENT_LOGLEVEL_ALL) {
- char *op;
+ const char *op;
if (ev->loglevel_type == LTTNG_EVENT_LOGLEVEL_RANGE) {
op = ">=";
return ret;
}
-/*
- * List IDs in the tracker.
- *
- * tracker_type is the type of tracker.
- * ids is set to an allocated array of IDs currently tracked. On
- * success, ids and contained ids must be freed/destroy by the caller.
- * nr_ids is set to the number of entries contained by the ids array.
- *
- * Returns 0 on success, else a negative LTTng error code.
- */
-int lttng_list_tracker_ids(struct lttng_handle *handle,
- enum lttng_tracker_type tracker_type,
- struct lttng_tracker_ids **_ids)
-{
- int ret, i;
- struct lttcomm_session_msg lsm;
- struct lttcomm_tracker_command_header *cmd_header = NULL;
- char *cmd_payload = NULL, *p;
- size_t cmd_header_len;
- size_t nr_ids = 0;
- struct lttng_tracker_ids *ids = NULL;
-
- if (handle == NULL) {
- return -LTTNG_ERR_INVALID;
- }
-
- memset(&lsm, 0, sizeof(lsm));
- lsm.cmd_type = LTTNG_LIST_TRACKER_IDS;
- lsm.u.id_tracker_list.tracker_type = tracker_type;
- lttng_ctl_copy_string(lsm.session.name, handle->session_name,
- sizeof(lsm.session.name));
- COPY_DOMAIN_PACKED(lsm.domain, handle->domain);
-
- ret = lttng_ctl_ask_sessiond_fds_varlen(&lsm, NULL, 0, NULL, 0,
- (void **) &cmd_payload, (void **) &cmd_header,
- &cmd_header_len);
- if (ret < 0) {
- goto error;
- }
-
- /* Set number of tracker_id and free command header */
- nr_ids = cmd_header->nb_tracker_id;
- if (nr_ids > INT_MAX) {
- ret = -LTTNG_ERR_OVERFLOW;
- goto error;
- }
- free(cmd_header);
- cmd_header = NULL;
-
- ids = lttng_tracker_ids_create(nr_ids);
- if (!ids) {
- ret = -LTTNG_ERR_NOMEM;
- goto error;
- }
-
- p = cmd_payload;
- for (i = 0; i < nr_ids; i++) {
- struct lttcomm_tracker_id_header *tracker_id;
- struct lttng_tracker_id *id;
- enum lttng_tracker_id_status status;
-
- tracker_id = (struct lttcomm_tracker_id_header *) p;
- p += sizeof(struct lttcomm_tracker_id_header);
- id = lttng_tracker_ids_get_pointer_of_index(ids, i);
- if (!id) {
- ret = -LTTNG_ERR_INVALID;
- goto error;
- }
-
- switch (tracker_id->type) {
- case LTTNG_ID_ALL:
- status = lttng_tracker_id_set_all(id);
- break;
- case LTTNG_ID_VALUE:
- id->value = tracker_id->u.value;
- status = lttng_tracker_id_set_value(
- id, tracker_id->u.value);
- break;
- case LTTNG_ID_STRING:
- status = lttng_tracker_id_set_string(id, p);
- p += tracker_id->u.var_data_len;
- break;
- default:
- goto error;
- }
-
- if (status != LTTNG_TRACKER_ID_STATUS_OK) {
- ret = -LTTNG_ERR_INVALID;
- goto error;
- }
- }
- free(cmd_payload);
- *_ids = ids;
- return 0;
-
-error:
- lttng_tracker_ids_destroy(ids);
- free(cmd_payload);
- free(cmd_header);
- return ret;
-}
-
-/*
- * List PIDs in the tracker.
- *
- * enabled is set to whether the PID tracker is enabled.
- * pids is set to an allocated array of PIDs currently tracked. On
- * success, pids must be freed by the caller.
- * nr_pids is set to the number of entries contained by the pids array.
- *
- * Returns 0 on success, else a negative LTTng error code.
- */
-int lttng_list_tracker_pids(struct lttng_handle *handle,
- int *_enabled, int32_t **_pids, size_t *_nr_pids)
-{
- struct lttng_tracker_ids *ids = NULL;
- size_t nr_ids = 0;
- int *pids = NULL;
- int ret = 0, i;
- enum lttng_tracker_id_status status;
- const struct lttng_tracker_id *id;
-
- ret = lttng_list_tracker_ids(handle, LTTNG_TRACKER_PID, &ids);
- if (ret < 0) {
- return ret;
- }
-
- nr_ids = lttng_tracker_ids_get_count(ids);
-
- if (nr_ids == 1) {
- id = lttng_tracker_ids_get_at_index(ids, 0);
- if (id && lttng_tracker_id_get_type(id) == LTTNG_ID_ALL) {
- *_enabled = 0;
- goto end;
- }
- }
-
- *_enabled = 1;
-
- pids = zmalloc(nr_ids * sizeof(*pids));
- if (!pids) {
- ret = -LTTNG_ERR_NOMEM;
- goto end;
- }
- for (i = 0; i < nr_ids; i++) {
- id = lttng_tracker_ids_get_at_index(ids, i);
- status = lttng_tracker_id_get_value(id, &pids[i]);
- if (status != LTTNG_TRACKER_ID_STATUS_OK) {
- ret = -LTTNG_ERR_UNK;
- goto end;
- }
- }
- *_pids = pids;
- *_nr_pids = nr_ids;
-end:
- lttng_tracker_ids_destroy(ids);
- if (ret < 0) {
- free(pids);
- }
- return ret;
-}
-
/*
* Regenerate the metadata for a session.
* Return 0 on success, a negative error code on error.
{
int ret;
struct lttcomm_session_msg lsm;
- struct lttng_dynamic_buffer buffer;
+ struct lttng_payload payload;
- lttng_dynamic_buffer_init(&buffer);
+ lttng_payload_init(&payload);
if (!trigger) {
ret = -LTTNG_ERR_INVALID;
goto end;
goto end;
}
- ret = lttng_trigger_serialize(trigger, &buffer);
+ ret = lttng_trigger_serialize(trigger, &payload);
if (ret < 0) {
ret = -LTTNG_ERR_UNK;
goto end;
memset(&lsm, 0, sizeof(lsm));
lsm.cmd_type = LTTNG_REGISTER_TRIGGER;
- lsm.u.trigger.length = (uint32_t) buffer.size;
- ret = lttng_ctl_ask_sessiond_varlen_no_cmd_header(&lsm, buffer.data,
- buffer.size, NULL);
+ lsm.u.trigger.length = (uint32_t) payload.buffer.size;
+ ret = lttng_ctl_ask_sessiond_varlen_no_cmd_header(
+ &lsm, payload.buffer.data, payload.buffer.size, NULL);
end:
- lttng_dynamic_buffer_reset(&buffer);
+ lttng_payload_reset(&payload);
return ret;
}
{
int ret;
struct lttcomm_session_msg lsm;
- struct lttng_dynamic_buffer buffer;
+ struct lttng_payload payload;
- lttng_dynamic_buffer_init(&buffer);
+ lttng_payload_init(&payload);
if (!trigger) {
ret = -LTTNG_ERR_INVALID;
goto end;
goto end;
}
- ret = lttng_trigger_serialize(trigger, &buffer);
+ ret = lttng_trigger_serialize(trigger, &payload);
if (ret < 0) {
ret = -LTTNG_ERR_UNK;
goto end;
memset(&lsm, 0, sizeof(lsm));
lsm.cmd_type = LTTNG_UNREGISTER_TRIGGER;
- lsm.u.trigger.length = (uint32_t) buffer.size;
- ret = lttng_ctl_ask_sessiond_varlen_no_cmd_header(&lsm, buffer.data,
- buffer.size, NULL);
-end:
- lttng_dynamic_buffer_reset(&buffer);
- return ret;
-}
-
-static int lttng_track_untrack_id(struct lttng_handle *handle,
- enum lttng_tracker_type tracker_type,
- const struct lttng_tracker_id *id,
- enum lttcomm_sessiond_command cmd)
-{
- int ret;
- struct lttcomm_session_msg lsm;
- const char *var_data;
- size_t var_data_len = 0;
- int value;
- enum lttng_tracker_id_status status;
-
- /* NULL arguments are forbidden. No default values. */
- if (handle == NULL) {
- goto error;
- }
-
- memset(&lsm, 0, sizeof(lsm));
-
- lsm.cmd_type = cmd;
- lsm.u.id_tracker.tracker_type = tracker_type;
- lsm.u.id_tracker.id_type = lttng_tracker_id_get_type(id);
- switch (lsm.u.id_tracker.id_type) {
- case LTTNG_ID_ALL:
- break;
- case LTTNG_ID_VALUE:
- status = lttng_tracker_id_get_value(id, &value);
- if (status != LTTNG_TRACKER_ID_STATUS_OK) {
- goto error;
- }
- lsm.u.id_tracker.u.value = value;
- break;
- case LTTNG_ID_STRING:
- status = lttng_tracker_id_get_string(id, &var_data);
- if (status != LTTNG_TRACKER_ID_STATUS_OK) {
- goto error;
- }
- var_data_len = strlen(var_data) + 1; /* Includes \0. */
- lsm.u.id_tracker.u.var_len = var_data_len;
- break;
- default:
- goto error;
- }
-
- COPY_DOMAIN_PACKED(lsm.domain, handle->domain);
-
- lttng_ctl_copy_string(lsm.session.name, handle->session_name,
- sizeof(lsm.session.name));
-
+ lsm.u.trigger.length = (uint32_t) payload.buffer.size;
ret = lttng_ctl_ask_sessiond_varlen_no_cmd_header(
- &lsm, (char *) var_data, var_data_len, NULL);
- return ret;
-error:
- return -LTTNG_ERR_INVALID;
-}
-
-/*
- * Add ID to session tracker.
- * Return 0 on success else a negative LTTng error code.
- */
-int lttng_track_id(struct lttng_handle *handle,
- enum lttng_tracker_type tracker_type,
- const struct lttng_tracker_id *id)
-{
- return lttng_track_untrack_id(handle, tracker_type, id, LTTNG_TRACK_ID);
-}
-
-/*
- * Remove ID from session tracker.
- * Return 0 on success else a negative LTTng error code.
- */
-int lttng_untrack_id(struct lttng_handle *handle,
- enum lttng_tracker_type tracker_type,
- const struct lttng_tracker_id *id)
-{
- return lttng_track_untrack_id(
- handle, tracker_type, id, LTTNG_UNTRACK_ID);
-}
-
-/*
- * Add PID to session tracker.
- * Return 0 on success else a negative LTTng error code.
- */
-int lttng_track_pid(struct lttng_handle *handle, int pid)
-{
- int ret;
- struct lttng_tracker_id *id = NULL;
- enum lttng_tracker_id_status status;
-
- id = lttng_tracker_id_create();
- status = lttng_tracker_id_set_value(id, pid);
- if (status == LTTNG_TRACKER_ID_STATUS_INVALID) {
- ret = -LTTNG_ERR_INVALID;
- goto error;
- }
-
- ret = lttng_track_id(handle, LTTNG_TRACKER_PID, id);
-error:
- lttng_tracker_id_destroy(id);
- return ret;
-}
-
-/*
- * Remove PID from session tracker.
- * Return 0 on success else a negative LTTng error code.
- */
-int lttng_untrack_pid(struct lttng_handle *handle, int pid)
-{
- int ret;
- struct lttng_tracker_id *id = NULL;
- enum lttng_tracker_id_status status;
-
- id = lttng_tracker_id_create();
- status = lttng_tracker_id_set_value(id, pid);
- if (status == LTTNG_TRACKER_ID_STATUS_INVALID) {
- ret = -LTTNG_ERR_INVALID;
- goto error;
- }
-
- ret = lttng_untrack_id(handle, LTTNG_TRACKER_PID, id);
-error:
- lttng_tracker_id_destroy(id);
+ &lsm, payload.buffer.data, payload.buffer.size, NULL);
+end:
+ lttng_payload_reset(&payload);
return ret;
}
projects / lttng-tools.git / blobdiff