* 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 <lttng/destruction-handle.h>
#include <lttng/tracker-internal.h>
-#include "filter/filter-ast.h"
-#include "filter/filter-parser.h"
-#include "filter/filter-bytecode.h"
-#include "filter/memstream.h"
+#include <common/filter/filter-ast.h>
+#include <common/filter/filter-parser.h>
+#include <common/filter/filter-bytecode.h>
+#include <common/filter/memstream.h>
#include "lttng-ctl-helper.h"
-#ifdef DEBUG
-static const int print_xml = 1;
-#define dbg_printf(fmt, args...) \
- printf("[debug liblttng-ctl] " fmt, ## args)
-#else
-static const int print_xml = 0;
-#define dbg_printf(fmt, args...) \
-do { \
- /* do nothing but check printf format */ \
- if (0) \
- printf("[debug liblttnctl] " fmt, ## args); \
-} while (0)
-#endif
-
#define COPY_DOMAIN_PACKED(dst, src) \
do { \
struct lttng_domain _tmp_domain; \
/* 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 NULL;
}
-/*
- * Generate the filter bytecode from a given filter expression string. Put the
- * newly allocated parser context in ctxp and populate the lsm object with the
- * expression len.
- *
- * Return 0 on success else a LTTNG_ERR_* code and ctxp is untouched.
- */
-static int generate_filter(char *filter_expression,
- struct lttcomm_session_msg *lsm, struct filter_parser_ctx **ctxp)
-{
- int ret;
- struct filter_parser_ctx *ctx = NULL;
- FILE *fmem = NULL;
-
- assert(filter_expression);
- assert(lsm);
- assert(ctxp);
-
- /*
- * Casting const to non-const, as the underlying function will use it in
- * read-only mode.
- */
- fmem = lttng_fmemopen((void *) filter_expression,
- strlen(filter_expression), "r");
- if (!fmem) {
- fprintf(stderr, "Error opening memory as stream\n");
- ret = -LTTNG_ERR_FILTER_NOMEM;
- goto error;
- }
- ctx = filter_parser_ctx_alloc(fmem);
- if (!ctx) {
- fprintf(stderr, "Error allocating parser\n");
- ret = -LTTNG_ERR_FILTER_NOMEM;
- goto filter_alloc_error;
- }
- ret = filter_parser_ctx_append_ast(ctx);
- if (ret) {
- fprintf(stderr, "Parse error\n");
- ret = -LTTNG_ERR_FILTER_INVAL;
- goto parse_error;
- }
- if (print_xml) {
- ret = filter_visitor_print_xml(ctx, stdout, 0);
- if (ret) {
- fflush(stdout);
- fprintf(stderr, "XML print error\n");
- ret = -LTTNG_ERR_FILTER_INVAL;
- goto parse_error;
- }
- }
-
- dbg_printf("Generating IR... ");
- fflush(stdout);
- ret = filter_visitor_ir_generate(ctx);
- if (ret) {
- fprintf(stderr, "Generate IR error\n");
- ret = -LTTNG_ERR_FILTER_INVAL;
- goto parse_error;
- }
- dbg_printf("done\n");
-
- dbg_printf("Validating IR... ");
- fflush(stdout);
- ret = filter_visitor_ir_check_binary_op_nesting(ctx);
- if (ret) {
- ret = -LTTNG_ERR_FILTER_INVAL;
- goto parse_error;
- }
-
- /* Normalize globbing patterns in the expression. */
- ret = filter_visitor_ir_normalize_glob_patterns(ctx);
- if (ret) {
- ret = -LTTNG_ERR_FILTER_INVAL;
- goto parse_error;
- }
-
- /* Validate strings used as literals in the expression. */
- ret = filter_visitor_ir_validate_string(ctx);
- if (ret) {
- ret = -LTTNG_ERR_FILTER_INVAL;
- goto parse_error;
- }
-
- /* Validate globbing patterns in the expression. */
- ret = filter_visitor_ir_validate_globbing(ctx);
- if (ret) {
- ret = -LTTNG_ERR_FILTER_INVAL;
- goto parse_error;
- }
-
- dbg_printf("done\n");
-
- dbg_printf("Generating bytecode... ");
- fflush(stdout);
- ret = filter_visitor_bytecode_generate(ctx);
- if (ret) {
- fprintf(stderr, "Generate bytecode error\n");
- ret = -LTTNG_ERR_FILTER_INVAL;
- goto parse_error;
- }
- dbg_printf("done\n");
- dbg_printf("Size of bytecode generated: %u bytes.\n",
- bytecode_get_len(&ctx->bytecode->b));
-
- lsm->u.enable.bytecode_len = sizeof(ctx->bytecode->b)
- + bytecode_get_len(&ctx->bytecode->b);
- lsm->u.enable.expression_len = strlen(filter_expression) + 1;
-
- /* No need to keep the memory stream. */
- if (fclose(fmem) != 0) {
- PERROR("fclose");
- }
-
- *ctxp = ctx;
- return 0;
-
-parse_error:
- filter_ir_free(ctx);
- filter_parser_ctx_free(ctx);
-filter_alloc_error:
- if (fclose(fmem) != 0) {
- PERROR("fclose");
- }
-error:
- return ret;
-}
-
/*
* Enable event(s) for a channel, possibly with exclusions and a filter.
* If no event name is specified, all events are enabled.
}
}
- ret = generate_filter(filter_expression, &lsm, &ctx);
+ ret = filter_parser_ctx_create_from_filter_expression(filter_expression, &ctx);
if (ret) {
goto filter_error;
}
+
+ lsm.u.enable.bytecode_len = sizeof(ctx->bytecode->b)
+ + bytecode_get_len(&ctx->bytecode->b);
+ lsm.u.enable.expression_len = strlen(filter_expression) + 1;
}
ret = lttng_dynamic_buffer_set_capacity(&send_buffer,
}
}
- ret = generate_filter(filter_expression, &lsm, &ctx);
+ ret = filter_parser_ctx_create_from_filter_expression(filter_expression, &ctx);
if (ret) {
goto filter_error;
}
+
+ lsm.u.enable.bytecode_len = sizeof(ctx->bytecode->b)
+ + bytecode_get_len(&ctx->bytecode->b);
+ lsm.u.enable.expression_len = strlen(filter_expression) + 1;
}
varlen_data = zmalloc(lsm.u.disable.bytecode_len
*/
int lttng_list_tracker_ids(struct lttng_handle *handle,
enum lttng_tracker_type tracker_type,
- struct lttng_tracker_id ***_ids,
- size_t *_nr_ids)
+ struct lttng_tracker_ids **_ids)
{
int ret, i;
struct lttcomm_session_msg lsm;
char *cmd_payload = NULL, *p;
size_t cmd_header_len;
size_t nr_ids = 0;
- struct lttng_tracker_id **ids = NULL;
+ struct lttng_tracker_ids *ids = NULL;
if (handle == NULL) {
return -LTTNG_ERR_INVALID;
free(cmd_header);
cmd_header = NULL;
- ids = zmalloc(sizeof(*ids) * nr_ids);
+ ids = lttng_tracker_ids_create(nr_ids);
if (!ids) {
ret = -LTTNG_ERR_NOMEM;
goto error;
tracker_id = (struct lttcomm_tracker_id_header *) p;
p += sizeof(struct lttcomm_tracker_id_header);
- id = lttng_tracker_id_create();
+ id = lttng_tracker_ids_get_pointer_of_index(ids, i);
if (!id) {
- ret = -LTTNG_ERR_NOMEM;
+ ret = -LTTNG_ERR_INVALID;
goto error;
}
ret = -LTTNG_ERR_INVALID;
goto error;
}
-
- /* Assign the new object to the list */
- ids[i] = id;
}
free(cmd_payload);
*_ids = ids;
- *_nr_ids = nr_ids;
return 0;
error:
- lttng_tracker_ids_destroy(ids, nr_ids);
- free(ids);
+ lttng_tracker_ids_destroy(ids);
free(cmd_payload);
free(cmd_header);
return ret;
int lttng_list_tracker_pids(struct lttng_handle *handle,
int *_enabled, int32_t **_pids, size_t *_nr_pids)
{
- struct lttng_tracker_id **ids = NULL;
- size_t nr_ids = 0;
+ struct lttng_tracker_ids *ids = NULL;
+ unsigned int 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, &nr_ids);
- if (ret < 0)
+ ret = lttng_list_tracker_ids(handle, LTTNG_TRACKER_PID, &ids);
+ if (ret < 0) {
return ret;
+ }
- if (nr_ids == 1 && lttng_tracker_id_get_type(ids[0]) == LTTNG_ID_ALL) {
- *_enabled = 0;
+ status = lttng_tracker_ids_get_count(ids, &nr_ids);
+ if (status != LTTNG_TRACKER_ID_STATUS_OK) {
+ ret = -LTTNG_ERR_INVALID;
goto end;
}
+
+ 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));
goto end;
}
for (i = 0; i < nr_ids; i++) {
- struct lttng_tracker_id *id = 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;
*_pids = pids;
*_nr_pids = nr_ids;
end:
- lttng_tracker_ids_destroy(ids, nr_ids);
- free(ids);
+ lttng_tracker_ids_destroy(ids);
if (ret < 0) {
free(pids);
}
int lttng_register_trigger(struct lttng_trigger *trigger)
{
int ret;
+ int reply_ret;
struct lttcomm_session_msg lsm;
struct lttng_dynamic_buffer buffer;
+ void *reply = NULL;
+ struct lttng_buffer_view reply_view;
+ struct lttng_trigger *reply_trigger = NULL;
+ bool send_fd = false;
+ int fd_to_send;
+ enum lttng_domain_type domain_type;
lttng_dynamic_buffer_init(&buffer);
if (!trigger) {
goto end;
}
- ret = lttng_trigger_serialize(trigger, &buffer);
+ domain_type = lttng_trigger_get_underlying_domain_type_restriction(
+ trigger);
+
+ ret = lttng_trigger_serialize(trigger, &buffer, &fd_to_send);
if (ret < 0) {
ret = -LTTNG_ERR_UNK;
goto end;
}
+ if (getenv("LTTNG_REGISTER_TRIGGER_DRY_RUN")) {
+ /*
+ * Don't really send the request, just deserialize, validate
+ * that it is equal to the original trigger (to test
+ * serialization and deserialization), and return.
+ */
+ struct lttng_buffer_view bv;
+ ssize_t sz;
+
+ bv = lttng_buffer_view_from_dynamic_buffer(&buffer, 0, -1);
+ sz = lttng_trigger_create_from_buffer(&bv, &reply_trigger);
+ if (sz != bv.size) {
+ ret = -LTTNG_ERR_UNK;
+ goto end;
+ }
+
+ if (!reply_trigger) {
+ ret = -LTTNG_ERR_UNK;
+ goto end;
+ }
+
+ if (!lttng_trigger_is_equal(trigger, reply_trigger)) {
+ ret = -LTTNG_ERR_UNK;
+ goto end;
+ }
+
+ /* Give it a dummy name. */
+ lttng_trigger_set_name(trigger, "yop");
+
+ ret = 0;
+ goto end;
+ }
+
+ send_fd = fd_to_send >= 0;
+
memset(&lsm, 0, sizeof(lsm));
lsm.cmd_type = LTTNG_REGISTER_TRIGGER;
+ lsm.domain.type = domain_type;
lsm.u.trigger.length = (uint32_t) buffer.size;
- ret = lttng_ctl_ask_sessiond_varlen_no_cmd_header(&lsm, buffer.data,
- buffer.size, NULL);
+ reply_ret = lttng_ctl_ask_sessiond_fds_varlen_no_cmd_header(&lsm,
+ send_fd ? &fd_to_send : NULL,
+ send_fd ? 1 : 0,
+ buffer.data,
+ buffer.size,
+ &reply);
+ if (reply_ret < 0) {
+ ret = reply_ret;
+ goto end;
+ } else if (reply_ret == 0) {
+ /* Socket unexpectedly closed by the session daemon. */
+ ret = -LTTNG_ERR_FATAL;
+ goto end;
+ }
+
+ reply_view = lttng_buffer_view_init(reply, 0, reply_ret);
+ ret = lttng_trigger_create_from_buffer(&reply_view, &reply_trigger);
+ if (ret < 0) {
+ ret = -LTTNG_ERR_FATAL;
+ goto end;
+ }
+
+ ret = lttng_trigger_assign(trigger, reply_trigger);
+ if (ret < 0) {
+ ret = -LTTNG_ERR_FATAL;
+ goto end;
+ }
+
+ ret = 0;
end:
+ free(reply);
lttng_dynamic_buffer_reset(&buffer);
+ lttng_trigger_destroy(reply_trigger);
return ret;
}
-int lttng_unregister_trigger(struct lttng_trigger *trigger)
+int lttng_unregister_trigger(const struct lttng_trigger *trigger)
{
int ret;
struct lttcomm_session_msg lsm;
goto end;
}
- ret = lttng_trigger_serialize(trigger, &buffer);
+ ret = lttng_trigger_serialize(trigger, &buffer, NULL);
if (ret < 0) {
ret = -LTTNG_ERR_UNK;
goto end;
return ret;
}
+/*
+ * Ask the session daemon for all registered triggers.
+ * Allocate a lttng_triggers collection.
+ * On error, returns a negative value.
+ */
+int lttng_list_triggers(struct lttng_triggers **triggers)
+{
+ int ret;
+ int reply_ret;
+ struct lttcomm_session_msg lsm;
+ struct lttng_buffer_view reply_view;
+ struct lttng_triggers *local_triggers = NULL;
+ void *reply = NULL;
+
+ memset(&lsm, 0, sizeof(lsm));
+ lsm.cmd_type = LTTNG_LIST_TRIGGERS;
+
+ reply_ret = lttng_ctl_ask_sessiond(&lsm, &reply);
+ if (reply_ret < 0) {
+ ret = reply_ret;
+ goto end;
+ } else if (reply_ret == 0) {
+ /* Socket unexpectedly closed by the session daemon. */
+ ret = -LTTNG_ERR_FATAL;
+ goto end;
+ }
+
+ reply_view = lttng_buffer_view_init(reply, 0, reply_ret);
+ ret = lttng_triggers_create_from_buffer(&reply_view, &local_triggers);
+ if (ret < 0) {
+ ret = -LTTNG_ERR_FATAL;
+ goto end;
+ }
+
+ *triggers = local_triggers;
+ local_triggers = NULL;
+ ret = 0;
+end:
+ free(reply);
+ free(local_triggers);
+ return ret;
+}
+
static int lttng_track_untrack_id(struct lttng_handle *handle,
enum lttng_tracker_type tracker_type,
const struct lttng_tracker_id *id,
{
int ret;
struct lttcomm_session_msg lsm;
- const char *var_data;
+ const char *var_data = NULL;
size_t var_data_len = 0;
int value;
enum lttng_tracker_id_status status;
projects / lttng-tools.git / blobdiff