Move to kernel style SPDX license identifiers
[lttng-tools.git] / src / bin / lttng-sessiond / client.c
index ae027d5e0d35a1b7bddb4b391d6feeb12aceb27a..ae0e020924b38b1929d97a1857c27eb382d5826a 100644 (file)
@@ -1,20 +1,10 @@
 /*
- * Copyright (C) 2011 David Goulet <david.goulet@polymtl.ca>
- *                      Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
- *               2013 - Jérémie Galarneau <jeremie.galarneau@efficios.com>
+ * Copyright (C) 2011 David Goulet <david.goulet@polymtl.ca>
+ * Copyright (C) 2011 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ * Copyright (C) 2013 Jérémie Galarneau <jeremie.galarneau@efficios.com>
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License, version 2 only,
- * as published by the Free Software Foundation.
+ * SPDX-License-Identifier: GPL-2.0-only
  *
- * This program 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 General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  */
 
 #include <stddef.h>
@@ -28,6 +18,7 @@
 #include <lttng/event-internal.h>
 #include <lttng/session-internal.h>
 #include <lttng/session-descriptor-internal.h>
+#include <lttng/tracker-internal.h>
 
 #include "client.h"
 #include "lttng-sessiond.h"
@@ -1207,98 +1198,139 @@ error_add_context:
        }
        case LTTNG_TRACK_ID:
        {
-               struct lttng_tracker_id id;
+               struct lttng_tracker_id *id = NULL;
+               enum lttng_tracker_id_status status;
+
+               id = lttng_tracker_id_create();
+               if (!id) {
+                       ret = LTTNG_ERR_NOMEM;
+                       goto error;
+               }
 
-               memset(&id, 0, sizeof(id));
-               id.type = cmd_ctx->lsm->u.id_tracker.id_type;
-               switch (id.type) {
+               switch (cmd_ctx->lsm->u.id_tracker.id_type) {
                case LTTNG_ID_ALL:
+                       status = lttng_tracker_id_set_all(id);
                        break;
                case LTTNG_ID_VALUE:
-                       id.value = cmd_ctx->lsm->u.id_tracker.u.value;
+                       status = lttng_tracker_id_set_value(
+                                       id, cmd_ctx->lsm->u.id_tracker.u.value);
                        break;
                case LTTNG_ID_STRING:
                {
                        const size_t var_len = cmd_ctx->lsm->u.id_tracker.u.var_len;
+                       char *string = NULL;
 
-                       id.string = zmalloc(var_len);
-                       if (!id.string) {
+                       string = zmalloc(var_len);
+                       if (!string) {
+                               lttng_tracker_id_destroy(id);
                                ret = LTTNG_ERR_NOMEM;
                                goto error;
                        }
                        DBG("Receiving var len tracker id string from client");
-                       ret = lttcomm_recv_unix_sock(*sock, id.string, var_len);
+                       ret = lttcomm_recv_unix_sock(*sock, string, var_len);
                        if (ret <= 0) {
                                DBG("Nothing received");
                                *sock_error = 1;
-                               free(id.string);
+                               free(string);
+                               lttng_tracker_id_destroy(id);
                                ret = LTTNG_ERR_INVALID;
                                goto error;
                        }
-                       if (strnlen(id.string, var_len) != var_len - 1) {
+                       if (strnlen(string, var_len) != var_len - 1) {
                                DBG("String received as tracker ID is not NULL-terminated");
-                               free(id.string);
+                               free(string);
+                               lttng_tracker_id_destroy(id);
                                ret = LTTNG_ERR_INVALID;
                                goto error;
                        }
+
+                       status = lttng_tracker_id_set_string(id, string);
+                       free(string);
                        break;
                }
                default:
+                       lttng_tracker_id_destroy(id);
+                       ret = LTTNG_ERR_INVALID;
+                       goto error;
+               }
+
+               if (status != LTTNG_TRACKER_ID_STATUS_OK) {
+                       ERR("Invalid value for tracker id");
                        ret = LTTNG_ERR_INVALID;
+                       lttng_tracker_id_destroy(id);
                        goto error;
                }
+
                ret = cmd_track_id(cmd_ctx->session,
                                cmd_ctx->lsm->u.id_tracker.tracker_type,
-                               cmd_ctx->lsm->domain.type, &id);
-               free(id.string);
+                               cmd_ctx->lsm->domain.type, id);
+               lttng_tracker_id_destroy(id);
                break;
        }
        case LTTNG_UNTRACK_ID:
        {
-               struct lttng_tracker_id id;
+               struct lttng_tracker_id *id = NULL;
+               enum lttng_tracker_id_status status;
+
+               id = lttng_tracker_id_create();
 
-               memset(&id, 0, sizeof(id));
-               id.type = cmd_ctx->lsm->u.id_tracker.id_type;
-               switch (id.type) {
+               switch (cmd_ctx->lsm->u.id_tracker.id_type) {
                case LTTNG_ID_ALL:
+                       status = lttng_tracker_id_set_all(id);
                        break;
                case LTTNG_ID_VALUE:
-                       id.value = cmd_ctx->lsm->u.id_tracker.u.value;
+                       status = lttng_tracker_id_set_value(
+                                       id, cmd_ctx->lsm->u.id_tracker.u.value);
                        break;
                case LTTNG_ID_STRING:
                {
                        const size_t var_len = cmd_ctx->lsm->u.id_tracker.u.var_len;
+                       char *string = NULL;
 
-                       id.string = zmalloc(var_len);
-                       if (!id.string) {
+                       string = zmalloc(var_len);
+                       if (!string) {
                                ret = LTTNG_ERR_NOMEM;
+                               lttng_tracker_id_destroy(id);
                                goto error;
                        }
                        DBG("Receiving var len tracker id string from client");
-                       ret = lttcomm_recv_unix_sock(*sock, id.string, var_len);
+                       ret = lttcomm_recv_unix_sock(*sock, string, var_len);
                        if (ret <= 0) {
                                DBG("Nothing received");
                                *sock_error = 1;
-                               free(id.string);
+                               lttng_tracker_id_destroy(id);
+                               free(string);
                                ret = LTTNG_ERR_INVALID;
                                goto error;
                        }
-                       if (strnlen(id.string, var_len) != var_len - 1) {
+                       if (strnlen(string, var_len) != var_len - 1) {
                                DBG("String received as tracker ID is not NULL-terminated");
-                               free(id.string);
+                               lttng_tracker_id_destroy(id);
+                               free(string);
                                ret = LTTNG_ERR_INVALID;
                                goto error;
                        }
+                       status = lttng_tracker_id_set_string(id, string);
+                       free(string);
                        break;
                }
                default:
+                       lttng_tracker_id_destroy(id);
                        ret = LTTNG_ERR_INVALID;
                        goto error;
                }
+
+               if (status != LTTNG_TRACKER_ID_STATUS_OK) {
+                       ERR("Invalid tracker id");
+                       lttng_tracker_id_destroy(id);
+                       ret = LTTNG_ERR_INVALID;
+                       goto error;
+               }
+
                ret = cmd_untrack_id(cmd_ctx->session,
                                cmd_ctx->lsm->u.id_tracker.tracker_type,
-                               cmd_ctx->lsm->domain.type, &id);
-               free(id.string);
+                               cmd_ctx->lsm->domain.type, id);
+               lttng_tracker_id_destroy(id);
                break;
        }
        case LTTNG_ENABLE_EVENT:
@@ -1527,64 +1559,41 @@ error_add_context:
        case LTTNG_LIST_TRACKER_IDS:
        {
                struct lttcomm_tracker_command_header cmd_header;
-               struct lttng_tracker_id *ids = NULL;
-               ssize_t nr_ids, i;
+               struct lttng_tracker_ids *ids = NULL;
+               enum lttng_tracker_id_status status;
+               unsigned int nr_ids;
                struct lttng_dynamic_buffer buf;
 
-               nr_ids = cmd_list_tracker_ids(
+               ret = cmd_list_tracker_ids(
                                cmd_ctx->lsm->u.id_tracker.tracker_type,
                                cmd_ctx->session, cmd_ctx->lsm->domain.type,
                                &ids);
-               if (nr_ids < 0) {
-                       /* Return value is a negative lttng_error_code. */
-                       ret = -nr_ids;
+               if (ret != LTTNG_OK) {
                        goto error;
                }
 
                lttng_dynamic_buffer_init(&buf);
-               for (i = 0; i < nr_ids; i++) {
-                       struct lttng_tracker_id *id = &ids[i];
-                       struct lttcomm_tracker_id_header id_hdr;
-                       size_t var_data_len = 0;
-
-                       memset(&id_hdr, 0, sizeof(id_hdr));
-                       id_hdr.type = id->type;
-                       switch (id->type) {
-                       case LTTNG_ID_ALL:
-                               break;
-                       case LTTNG_ID_VALUE:
-                               id_hdr.u.value = id->value;
-                               break;
-                       case LTTNG_ID_STRING:
-                               id_hdr.u.var_data_len = var_data_len =
-                                               strlen(id->string) + 1;
-                               break;
-                       default:
-                               ret = LTTNG_ERR_INVALID;
-                               goto error;
-                       }
-                       ret = lttng_dynamic_buffer_append(
-                                       &buf, &id_hdr, sizeof(id_hdr));
-                       if (ret) {
-                               ret = LTTNG_ERR_NOMEM;
-                               goto error;
-                       }
-                       ret = lttng_dynamic_buffer_append(
-                                       &buf, id->string, var_data_len);
-                       if (ret) {
-                               ret = LTTNG_ERR_NOMEM;
-                               goto error;
-                       }
-                       free(id->string);
+
+               status = lttng_tracker_ids_get_count(ids, &nr_ids);
+               if (status != LTTNG_TRACKER_ID_STATUS_OK) {
+                       ret = -LTTNG_ERR_INVALID;
+                       goto error_list_tracker;
                }
 
                cmd_header.nb_tracker_id = nr_ids;
+
+               ret = lttng_tracker_ids_serialize(ids, &buf);
+               if (ret < 0) {
+                       goto error_list_tracker;
+               }
+
                ret = setup_lttng_msg(cmd_ctx, buf.data, buf.size, &cmd_header,
                                sizeof(cmd_header));
-               free(ids);
+       error_list_tracker:
+               lttng_tracker_ids_destroy(ids);
                lttng_dynamic_buffer_reset(&buf);
                if (ret < 0) {
-                       goto setup_error;
+                       goto error;
                }
 
                ret = LTTNG_OK;
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