/*
- * Copyright (C) 2011 David Goulet <david.goulet@polymtl.ca>
+ * Copyright (C) 2011 EfficiOS Inc.
* Copyright (C) 2011 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
* Copyright (C) 2013 Jérémie Galarneau <jeremie.galarneau@efficios.com>
*
#include "common/buffer-view.h"
#include "common/compat/socket.h"
-#include "common/dynamic-buffer.h"
#include "common/dynamic-array.h"
-#include "common/payload.h"
-#include "common/payload-view.h"
+#include "common/dynamic-buffer.h"
#include "common/fd-handle.h"
-#include "common/sessiond-comm/sessiond-comm.h"
-#include "common/payload.h"
#include "common/payload-view.h"
+#include "common/payload.h"
+#include "common/sessiond-comm/sessiond-comm.h"
#include "lttng/lttng-error.h"
#include "lttng/tracker.h"
#include <common/compat/getenv.h>
#include <common/tracker.h>
#include <common/unix.h>
#include <common/utils.h>
+#include <lttng/error-query-internal.h>
#include <lttng/event-internal.h>
#include <lttng/session-descriptor-internal.h>
#include <lttng/session-internal.h>
#include <pthread.h>
#include <signal.h>
#include <stddef.h>
+#include <stdint.h>
#include <sys/stat.h>
#include <unistd.h>
+#include "agent-thread.h"
+#include "clear.h"
#include "client.h"
-#include "lttng-sessiond.h"
#include "cmd.h"
+#include "health-sessiond.h"
#include "kernel.h"
+#include "lttng-sessiond.h"
+#include "manage-consumer.h"
#include "save.h"
-#include "health-sessiond.h"
#include "testpoint.h"
#include "utils.h"
-#include "manage-consumer.h"
-#include "clear.h"
static bool is_root;
/*
* Exec consumerd.
*/
- if (config.verbose_consumer) {
+ if (the_config.verbose_consumer) {
verbosity = "--verbose";
} else if (lttng_opt_quiet) {
verbosity = "--quiet";
* fallback on the 32-bit one,
*/
DBG3("Looking for a kernel consumer at these locations:");
- DBG3(" 1) %s", config.consumerd64_bin_path.value ? : "NULL");
+ DBG3(" 1) %s", the_config.consumerd64_bin_path.value ? : "NULL");
DBG3(" 2) %s/%s", INSTALL_BIN_PATH, DEFAULT_CONSUMERD_FILE);
- DBG3(" 3) %s", config.consumerd32_bin_path.value ? : "NULL");
- if (stat(config.consumerd64_bin_path.value, &st) == 0) {
+ DBG3(" 3) %s", the_config.consumerd32_bin_path.value ? : "NULL");
+ if (stat(the_config.consumerd64_bin_path.value, &st) == 0) {
DBG3("Found location #1");
- consumer_to_use = config.consumerd64_bin_path.value;
+ consumer_to_use = the_config.consumerd64_bin_path.value;
} else if (stat(INSTALL_BIN_PATH "/" DEFAULT_CONSUMERD_FILE, &st) == 0) {
DBG3("Found location #2");
consumer_to_use = INSTALL_BIN_PATH "/" DEFAULT_CONSUMERD_FILE;
- } else if (config.consumerd32_bin_path.value &&
- stat(config.consumerd32_bin_path.value, &st) == 0) {
+ } else if (the_config.consumerd32_bin_path.value &&
+ stat(the_config.consumerd32_bin_path.value, &st) == 0) {
DBG3("Found location #3");
- consumer_to_use = config.consumerd32_bin_path.value;
+ consumer_to_use = the_config.consumerd32_bin_path.value;
} else {
DBG("Could not find any valid consumerd executable");
ret = -EINVAL;
goto error;
}
DBG("Using kernel consumer at: %s", consumer_to_use);
- (void) execl(consumer_to_use,
- "lttng-consumerd", verbosity, "-k",
- "--consumerd-cmd-sock", consumer_data->cmd_unix_sock_path,
- "--consumerd-err-sock", consumer_data->err_unix_sock_path,
- "--group", config.tracing_group_name.value,
- NULL);
+ (void) execl(consumer_to_use, "lttng-consumerd",
+ verbosity, "-k", "--consumerd-cmd-sock",
+ consumer_data->cmd_unix_sock_path,
+ "--consumerd-err-sock",
+ consumer_data->err_unix_sock_path,
+ "--group",
+ the_config.tracing_group_name.value,
+ NULL);
break;
case LTTNG_CONSUMER64_UST:
{
- if (config.consumerd64_lib_dir.value) {
+ if (the_config.consumerd64_lib_dir.value) {
const char *tmp;
size_t tmplen;
char *tmpnew;
if (!tmp) {
tmp = "";
}
- tmplen = strlen(config.consumerd64_lib_dir.value) + 1 /* : */ + strlen(tmp);
+ tmplen = strlen(the_config.consumerd64_lib_dir.value) + 1 /* : */ + strlen(tmp);
tmpnew = zmalloc(tmplen + 1 /* \0 */);
if (!tmpnew) {
ret = -ENOMEM;
goto error;
}
- strcat(tmpnew, config.consumerd64_lib_dir.value);
+ strcat(tmpnew, the_config.consumerd64_lib_dir.value);
if (tmp[0] != '\0') {
strcat(tmpnew, ":");
strcat(tmpnew, tmp);
goto error;
}
}
- DBG("Using 64-bit UST consumer at: %s", config.consumerd64_bin_path.value);
- (void) execl(config.consumerd64_bin_path.value, "lttng-consumerd", verbosity, "-u",
- "--consumerd-cmd-sock", consumer_data->cmd_unix_sock_path,
- "--consumerd-err-sock", consumer_data->err_unix_sock_path,
- "--group", config.tracing_group_name.value,
+ DBG("Using 64-bit UST consumer at: %s",
+ the_config.consumerd64_bin_path.value);
+ (void) execl(the_config.consumerd64_bin_path.value,
+ "lttng-consumerd", verbosity, "-u",
+ "--consumerd-cmd-sock",
+ consumer_data->cmd_unix_sock_path,
+ "--consumerd-err-sock",
+ consumer_data->err_unix_sock_path,
+ "--group",
+ the_config.tracing_group_name.value,
NULL);
break;
}
case LTTNG_CONSUMER32_UST:
{
- if (config.consumerd32_lib_dir.value) {
+ if (the_config.consumerd32_lib_dir.value) {
const char *tmp;
size_t tmplen;
char *tmpnew;
if (!tmp) {
tmp = "";
}
- tmplen = strlen(config.consumerd32_lib_dir.value) + 1 /* : */ + strlen(tmp);
+ tmplen = strlen(the_config.consumerd32_lib_dir.value) + 1 /* : */ + strlen(tmp);
tmpnew = zmalloc(tmplen + 1 /* \0 */);
if (!tmpnew) {
ret = -ENOMEM;
goto error;
}
- strcat(tmpnew, config.consumerd32_lib_dir.value);
+ strcat(tmpnew, the_config.consumerd32_lib_dir.value);
if (tmp[0] != '\0') {
strcat(tmpnew, ":");
strcat(tmpnew, tmp);
goto error;
}
}
- DBG("Using 32-bit UST consumer at: %s", config.consumerd32_bin_path.value);
- (void) execl(config.consumerd32_bin_path.value, "lttng-consumerd", verbosity, "-u",
- "--consumerd-cmd-sock", consumer_data->cmd_unix_sock_path,
- "--consumerd-err-sock", consumer_data->err_unix_sock_path,
- "--group", config.tracing_group_name.value,
+ DBG("Using 32-bit UST consumer at: %s",
+ the_config.consumerd32_bin_path.value);
+ (void) execl(the_config.consumerd32_bin_path.value,
+ "lttng-consumerd", verbosity, "-u",
+ "--consumerd-cmd-sock",
+ consumer_data->cmd_unix_sock_path,
+ "--consumerd-err-sock",
+ consumer_data->err_unix_sock_path,
+ "--group",
+ the_config.tracing_group_name.value,
NULL);
break;
}
return i;
}
-static int receive_userspace_probe(struct command_ctx *cmd_ctx, int sock,
- int *sock_error, struct lttng_event *event)
+static enum lttng_error_code receive_lttng_trigger(struct command_ctx *cmd_ctx,
+ int sock,
+ int *sock_error,
+ struct lttng_trigger **_trigger)
{
- int fd = -1, ret;
- struct lttng_userspace_probe_location *probe_location;
- struct lttng_payload probe_location_payload;
- struct fd_handle *handle = NULL;
-
- /*
- * Create a payload to store the serialized version of the probe
- * location.
- */
- lttng_payload_init(&probe_location_payload);
+ int ret;
+ size_t trigger_len;
+ ssize_t sock_recv_len;
+ enum lttng_error_code ret_code;
+ struct lttng_payload trigger_payload;
+ struct lttng_trigger *trigger = NULL;
- ret = lttng_dynamic_buffer_set_size(&probe_location_payload.buffer,
- cmd_ctx->lsm.u.enable.userspace_probe_location_len);
+ lttng_payload_init(&trigger_payload);
+ trigger_len = (size_t) cmd_ctx->lsm.u.trigger.length;
+ ret = lttng_dynamic_buffer_set_size(
+ &trigger_payload.buffer, trigger_len);
if (ret) {
- ret = LTTNG_ERR_NOMEM;
- goto error;
- }
-
- /*
- * Receive the probe location.
- */
- ret = lttcomm_recv_unix_sock(sock, probe_location_payload.buffer.data,
- probe_location_payload.buffer.size);
- if (ret <= 0) {
- DBG("Nothing recv() from client var len data... continuing");
- *sock_error = 1;
- ret = LTTNG_ERR_PROBE_LOCATION_INVAL;
- goto error;
+ ret_code = LTTNG_ERR_NOMEM;
+ goto end;
}
- /*
- * Receive the file descriptor to the target binary from the client.
- */
- DBG("Receiving userspace probe target FD from client ...");
- ret = lttcomm_recv_fds_unix_sock(sock, &fd, 1);
- if (ret <= 0) {
- DBG("Nothing recv() from client userspace probe fd... continuing");
+ sock_recv_len = lttcomm_recv_unix_sock(
+ sock, trigger_payload.buffer.data, trigger_len);
+ if (sock_recv_len < 0 || sock_recv_len != trigger_len) {
+ ERR("Failed to receive trigger in command payload");
*sock_error = 1;
- ret = LTTNG_ERR_PROBE_LOCATION_INVAL;
- goto error;
+ ret_code = LTTNG_ERR_INVALID_PROTOCOL;
+ goto end;
}
- handle = fd_handle_create(fd);
- if (!handle) {
- ret = LTTNG_ERR_NOMEM;
- goto error;
+ /* Receive fds, if any. */
+ if (cmd_ctx->lsm.fd_count > 0) {
+ sock_recv_len = lttcomm_recv_payload_fds_unix_sock(
+ sock, cmd_ctx->lsm.fd_count, &trigger_payload);
+ if (sock_recv_len > 0 &&
+ sock_recv_len != cmd_ctx->lsm.fd_count * sizeof(int)) {
+ ERR("Failed to receive all file descriptors for trigger in command payload: expected fd count = %u, ret = %d",
+ cmd_ctx->lsm.fd_count, (int) ret);
+ ret_code = LTTNG_ERR_INVALID_PROTOCOL;
+ *sock_error = 1;
+ goto end;
+ } else if (sock_recv_len <= 0) {
+ ERR("Failed to receive file descriptors for trigger in command payload: expected fd count = %u, ret = %d",
+ cmd_ctx->lsm.fd_count, (int) ret);
+ ret_code = LTTNG_ERR_FATAL;
+ *sock_error = 1;
+ goto end;
+ }
}
- /* Transferred to the handle. */
- fd = -1;
+ /* Deserialize trigger. */
+ {
+ struct lttng_payload_view view =
+ lttng_payload_view_from_payload(
+ &trigger_payload, 0, -1);
- ret = lttng_payload_push_fd_handle(&probe_location_payload, handle);
- if (ret) {
- ERR("Failed to add userspace probe file descriptor to payload");
- ret = LTTNG_ERR_NOMEM;
- goto error;
+ if (lttng_trigger_create_from_payload(&view, &trigger) !=
+ trigger_len) {
+ ERR("Invalid trigger received as part of command payload");
+ ret_code = LTTNG_ERR_INVALID_TRIGGER;
+ lttng_trigger_put(trigger);
+ goto end;
+ }
}
- fd_handle_put(handle);
- handle = NULL;
+ *_trigger = trigger;
+ ret_code = LTTNG_OK;
- {
- struct lttng_payload_view view = lttng_payload_view_from_payload(
- &probe_location_payload, 0, -1);
+end:
+ lttng_payload_reset(&trigger_payload);
+ return ret_code;
+}
+
+static enum lttng_error_code receive_lttng_error_query(struct command_ctx *cmd_ctx,
+ int sock,
+ int *sock_error,
+ struct lttng_error_query **_query)
+{
+ int ret;
+ size_t query_len;
+ ssize_t sock_recv_len;
+ enum lttng_error_code ret_code;
+ struct lttng_payload query_payload;
+ struct lttng_error_query *query = NULL;
- /* Extract the probe location from the serialized version. */
- ret = lttng_userspace_probe_location_create_from_payload(
- &view, &probe_location);
+ lttng_payload_init(&query_payload);
+ query_len = (size_t) cmd_ctx->lsm.u.error_query.length;
+ ret = lttng_dynamic_buffer_set_size(&query_payload.buffer, query_len);
+ if (ret) {
+ ret_code = LTTNG_ERR_NOMEM;
+ goto end;
}
- if (ret < 0) {
- WARN("Failed to create a userspace probe location from the received buffer");
- ret = LTTNG_ERR_PROBE_LOCATION_INVAL;
- goto error;
+
+ sock_recv_len = lttcomm_recv_unix_sock(
+ sock, query_payload.buffer.data, query_len);
+ if (sock_recv_len < 0 || sock_recv_len != query_len) {
+ ERR("Failed to receive error query in command payload");
+ *sock_error = 1;
+ ret_code = LTTNG_ERR_INVALID_PROTOCOL;
+ goto end;
}
- /* Attach the probe location to the event. */
- ret = lttng_event_set_userspace_probe_location(event, probe_location);
- if (ret) {
- ret = LTTNG_ERR_PROBE_LOCATION_INVAL;
- goto error;
+ /* Receive fds, if any. */
+ if (cmd_ctx->lsm.fd_count > 0) {
+ sock_recv_len = lttcomm_recv_payload_fds_unix_sock(
+ sock, cmd_ctx->lsm.fd_count, &query_payload);
+ if (sock_recv_len > 0 &&
+ sock_recv_len != cmd_ctx->lsm.fd_count * sizeof(int)) {
+ ERR("Failed to receive all file descriptors for error query in command payload: expected fd count = %u, ret = %d",
+ cmd_ctx->lsm.fd_count, (int) ret);
+ ret_code = LTTNG_ERR_INVALID_PROTOCOL;
+ *sock_error = 1;
+ goto end;
+ } else if (sock_recv_len <= 0) {
+ ERR("Failed to receive file descriptors for error query in command payload: expected fd count = %u, ret = %d",
+ cmd_ctx->lsm.fd_count, (int) ret);
+ ret_code = LTTNG_ERR_FATAL;
+ *sock_error = 1;
+ goto end;
+ }
}
-error:
- if (fd >= 0) {
- if (close(fd)) {
- PERROR("Failed to close userspace probe location binary fd");
+ /* Deserialize error query. */
+ {
+ struct lttng_payload_view view =
+ lttng_payload_view_from_payload(
+ &query_payload, 0, -1);
+
+ if (lttng_error_query_create_from_payload(&view, &query) !=
+ query_len) {
+ ERR("Invalid error query received as part of command payload");
+ ret_code = LTTNG_ERR_INVALID_PROTOCOL;
+ goto end;
}
}
- fd_handle_put(handle);
- lttng_payload_reset(&probe_location_payload);
- return ret;
+ *_query = query;
+ ret_code = LTTNG_OK;
+
+end:
+ lttng_payload_reset(&query_payload);
+ return ret_code;
}
-static enum lttng_error_code receive_lttng_trigger(struct command_ctx *cmd_ctx,
+static enum lttng_error_code receive_lttng_event(struct command_ctx *cmd_ctx,
int sock,
int *sock_error,
- struct lttng_trigger **_trigger)
+ struct lttng_event **out_event,
+ char **out_filter_expression,
+ struct lttng_bytecode **out_bytecode,
+ struct lttng_event_exclusion **out_exclusion)
{
int ret;
- size_t trigger_len;
+ size_t event_len;
ssize_t sock_recv_len;
enum lttng_error_code ret_code;
- struct lttng_payload trigger_payload;
- struct lttng_trigger *trigger;
+ struct lttng_payload event_payload;
+ struct lttng_event *local_event = NULL;
+ char *local_filter_expression = NULL;
+ struct lttng_bytecode *local_bytecode = NULL;
+ struct lttng_event_exclusion *local_exclusion = NULL;
+
+ lttng_payload_init(&event_payload);
+ if (cmd_ctx->lsm.cmd_type == LTTNG_ENABLE_EVENT) {
+ event_len = (size_t) cmd_ctx->lsm.u.enable.length;
+ } else if (cmd_ctx->lsm.cmd_type == LTTNG_DISABLE_EVENT) {
+ event_len = (size_t) cmd_ctx->lsm.u.disable.length;
+ } else {
+ abort();
+ }
- lttng_payload_init(&trigger_payload);
- trigger_len = (size_t) cmd_ctx->lsm.u.trigger.length;
- ret = lttng_dynamic_buffer_set_size(
- &trigger_payload.buffer, trigger_len);
+ ret = lttng_dynamic_buffer_set_size(&event_payload.buffer, event_len);
if (ret) {
ret_code = LTTNG_ERR_NOMEM;
goto end;
}
sock_recv_len = lttcomm_recv_unix_sock(
- sock, trigger_payload.buffer.data, trigger_len);
- if (sock_recv_len < 0 || sock_recv_len != trigger_len) {
- ERR("Failed to receive trigger in command payload");
+ sock, event_payload.buffer.data, event_len);
+ if (sock_recv_len < 0 || sock_recv_len != event_len) {
+ ERR("Failed to receive event in command payload");
*sock_error = 1;
ret_code = LTTNG_ERR_INVALID_PROTOCOL;
goto end;
/* Receive fds, if any. */
if (cmd_ctx->lsm.fd_count > 0) {
sock_recv_len = lttcomm_recv_payload_fds_unix_sock(
- sock, cmd_ctx->lsm.fd_count, &trigger_payload);
+ sock, cmd_ctx->lsm.fd_count, &event_payload);
if (sock_recv_len > 0 &&
sock_recv_len != cmd_ctx->lsm.fd_count * sizeof(int)) {
- ERR("Failed to receive all file descriptors for trigger in command payload: expected fd count = %u, ret = %d",
+ ERR("Failed to receive all file descriptors for event in command payload: expected fd count = %u, ret = %d",
cmd_ctx->lsm.fd_count, (int) ret);
ret_code = LTTNG_ERR_INVALID_PROTOCOL;
*sock_error = 1;
goto end;
} else if (sock_recv_len <= 0) {
- ERR("Failed to receive file descriptors for trigger in command payload: expected fd count = %u, ret = %d",
+ ERR("Failed to receive file descriptors for event in command payload: expected fd count = %u, ret = %d",
cmd_ctx->lsm.fd_count, (int) ret);
ret_code = LTTNG_ERR_FATAL;
*sock_error = 1;
}
}
- /* Deserialize trigger. */
+ /* Deserialize event. */
{
- struct lttng_payload_view view =
+ ssize_t len;
+ struct lttng_payload_view event_view =
lttng_payload_view_from_payload(
- &trigger_payload, 0, -1);
+ &event_payload, 0, -1);
- if (lttng_trigger_create_from_payload(&view, &trigger) !=
- trigger_len) {
- ERR("Invalid trigger received as part of command payload");
- ret_code = LTTNG_ERR_INVALID_TRIGGER;
+ len = lttng_event_create_from_payload(&event_view, &local_event,
+ &local_exclusion, &local_filter_expression,
+ &local_bytecode);
+
+ if (len < 0) {
+ ERR("Failed to create an event from the received buffer");
+ ret_code = LTTNG_ERR_INVALID_PROTOCOL;
+ goto end;
+ }
+
+ if (len != event_len) {
+ ERR("Userspace probe location from the received buffer is not the advertised length: header length = %zu" PRIu32 ", payload length = %zd", event_len, len);
+ ret_code = LTTNG_ERR_INVALID_PROTOCOL;
goto end;
}
}
- *_trigger = trigger;
+ *out_event = local_event;
+ *out_exclusion = local_exclusion;
+ *out_filter_expression = local_filter_expression;
+ *out_bytecode = local_bytecode;
+ local_event = NULL;
+ local_exclusion = NULL;
+ local_filter_expression = NULL;
+ local_bytecode = NULL;
+
+ ret_code = LTTNG_OK;
+
+end:
+ lttng_payload_reset(&event_payload);
+ lttng_event_destroy(local_event);
+ free(local_filter_expression);
+ free(local_bytecode);
+ free(local_exclusion);
+ return ret_code;
+}
+
+static enum lttng_error_code receive_lttng_event_context(
+ const struct command_ctx *cmd_ctx,
+ int sock,
+ int *sock_error,
+ struct lttng_event_context **out_event_context)
+{
+ int ret;
+ const size_t event_context_len =
+ (size_t) cmd_ctx->lsm.u.context.length;
+ ssize_t sock_recv_len;
+ enum lttng_error_code ret_code;
+ struct lttng_payload event_context_payload;
+ struct lttng_event_context *context = NULL;
+
+ lttng_payload_init(&event_context_payload);
+
+ ret = lttng_dynamic_buffer_set_size(&event_context_payload.buffer,
+ event_context_len);
+ if (ret) {
+ ret_code = LTTNG_ERR_NOMEM;
+ goto end;
+ }
+
+ sock_recv_len = lttcomm_recv_unix_sock(
+ sock, event_context_payload.buffer.data,
+ event_context_len);
+ if (sock_recv_len < 0 || sock_recv_len != event_context_len) {
+ ERR("Failed to receive event context in command payload");
+ *sock_error = 1;
+ ret_code = LTTNG_ERR_INVALID_PROTOCOL;
+ goto end;
+ }
+
+ /* Deserialize event. */
+ {
+ ssize_t len;
+ struct lttng_payload_view event_context_view =
+ lttng_payload_view_from_payload(
+ &event_context_payload, 0, -1);
+
+ len = lttng_event_context_create_from_payload(
+ &event_context_view, &context);
+
+ if (len < 0) {
+ ERR("Failed to create a event context from the received buffer");
+ ret_code = LTTNG_ERR_INVALID_PROTOCOL;
+ goto end;
+ }
+
+ if (len != event_context_len) {
+ ERR("Event context from the received buffer is not the advertised length: expected length = %zu, payload length = %zd", event_context_len, len);
+ ret_code = LTTNG_ERR_INVALID_PROTOCOL;
+ goto end;
+ }
+ }
+
+ *out_event_context = context;
+ context = NULL;
ret_code = LTTNG_OK;
end:
+ lttng_event_context_destroy(context);
+ lttng_payload_reset(&event_context_payload);
return ret_code;
}
{
int ret = 1;
- if (kernel_tracer_version.major != 2 || kernel_tracer_version.minor < 11) {
+ if (the_kernel_tracer_version.major != 2 ||
+ the_kernel_tracer_version.minor < 11) {
DBG("Kernel tracer version is not compatible with the rotation feature");
ret = 0;
}
bool need_domain;
bool need_consumerd;
+ if (!lttcomm_sessiond_command_is_valid((enum lttcomm_sessiond_command) cmd_ctx->lsm.cmd_type)) {
+ ERR("Unknown client command received: command id = %" PRIu32,
+ cmd_ctx->lsm.cmd_type);
+ ret = LTTNG_ERR_UND;
+ goto error;
+ }
+
DBG("Processing client command '%s\' (%d)",
lttcomm_sessiond_command_str(cmd_ctx->lsm.cmd_type),
cmd_ctx->lsm.cmd_type);
case LTTNG_SESSION_LIST_ROTATION_SCHEDULES:
case LTTNG_CLEAR_SESSION:
case LTTNG_LIST_TRIGGERS:
+ case LTTNG_EXECUTE_ERROR_QUERY:
need_domain = false;
break;
default:
switch (cmd_ctx->lsm.cmd_type) {
case LTTNG_REGISTER_TRIGGER:
case LTTNG_UNREGISTER_TRIGGER:
+ case LTTNG_EXECUTE_ERROR_QUERY:
need_consumerd = false;
break;
default:
break;
}
- if (config.no_kernel && need_domain
- && cmd_ctx->lsm.domain.type == LTTNG_DOMAIN_KERNEL) {
+ if (the_config.no_kernel && need_domain &&
+ cmd_ctx->lsm.domain.type == LTTNG_DOMAIN_KERNEL) {
if (!is_root) {
ret = LTTNG_ERR_NEED_ROOT_SESSIOND;
} else {
/* Deny register consumer if we already have a spawned consumer. */
if (cmd_ctx->lsm.cmd_type == LTTNG_REGISTER_CONSUMER) {
- pthread_mutex_lock(&kconsumer_data.pid_mutex);
- if (kconsumer_data.pid > 0) {
+ pthread_mutex_lock(&the_kconsumer_data.pid_mutex);
+ if (the_kconsumer_data.pid > 0) {
ret = LTTNG_ERR_KERN_CONSUMER_FAIL;
- pthread_mutex_unlock(&kconsumer_data.pid_mutex);
+ pthread_mutex_unlock(&the_kconsumer_data.pid_mutex);
goto error;
}
- pthread_mutex_unlock(&kconsumer_data.pid_mutex);
+ pthread_mutex_unlock(&the_kconsumer_data.pid_mutex);
}
/*
case LTTNG_ROTATION_GET_INFO:
case LTTNG_REGISTER_TRIGGER:
case LTTNG_LIST_TRIGGERS:
+ case LTTNG_EXECUTE_ERROR_QUERY:
break;
default:
/* Setup lttng message with no payload */
case LTTNG_REGISTER_TRIGGER:
case LTTNG_UNREGISTER_TRIGGER:
case LTTNG_LIST_TRIGGERS:
+ case LTTNG_EXECUTE_ERROR_QUERY:
need_tracing_session = false;
break;
default:
}
/* Consumer is in an ERROR state. Report back to client */
- if (need_consumerd && uatomic_read(&kernel_consumerd_state) ==
- CONSUMER_ERROR) {
+ if (need_consumerd && uatomic_read(&the_kernel_consumerd_state) ==
+ CONSUMER_ERROR) {
ret = LTTNG_ERR_NO_KERNCONSUMERD;
goto error;
}
}
/* Start the kernel consumer daemon */
- pthread_mutex_lock(&kconsumer_data.pid_mutex);
- if (kconsumer_data.pid == 0 &&
+ pthread_mutex_lock(&the_kconsumer_data.pid_mutex);
+ if (the_kconsumer_data.pid == 0 &&
cmd_ctx->lsm.cmd_type != LTTNG_REGISTER_CONSUMER) {
- pthread_mutex_unlock(&kconsumer_data.pid_mutex);
- ret = start_consumerd(&kconsumer_data);
+ pthread_mutex_unlock(&the_kconsumer_data.pid_mutex);
+ ret = start_consumerd(&the_kconsumer_data);
if (ret < 0) {
ret = LTTNG_ERR_KERN_CONSUMER_FAIL;
goto error;
}
- uatomic_set(&kernel_consumerd_state, CONSUMER_STARTED);
+ uatomic_set(&the_kernel_consumerd_state, CONSUMER_STARTED);
} else {
- pthread_mutex_unlock(&kconsumer_data.pid_mutex);
+ pthread_mutex_unlock(&the_kconsumer_data.pid_mutex);
}
/*
* The consumer was just spawned so we need to add the socket to
* the consumer output of the session if exist.
*/
- ret = consumer_create_socket(&kconsumer_data,
+ ret = consumer_create_socket(&the_kconsumer_data,
cmd_ctx->session->kernel_session->consumer);
if (ret < 0) {
goto error;
case LTTNG_DOMAIN_JUL:
case LTTNG_DOMAIN_LOG4J:
case LTTNG_DOMAIN_PYTHON:
+ if (!agent_tracing_is_enabled()) {
+ ret = LTTNG_ERR_AGENT_TRACING_DISABLED;
+ goto error;
+ }
+ /* Fallthrough */
case LTTNG_DOMAIN_UST:
{
if (!ust_app_supported()) {
}
/* Consumer is in an ERROR state. Report back to client */
- if (need_consumerd && uatomic_read(&ust_consumerd_state) ==
- CONSUMER_ERROR) {
+ if (need_consumerd &&
+ uatomic_read(&the_ust_consumerd_state) ==
+ CONSUMER_ERROR) {
ret = LTTNG_ERR_NO_USTCONSUMERD;
goto error;
}
/* Start the UST consumer daemons */
/* 64-bit */
- pthread_mutex_lock(&ustconsumer64_data.pid_mutex);
- if (config.consumerd64_bin_path.value &&
- ustconsumer64_data.pid == 0 &&
+ pthread_mutex_lock(&the_ustconsumer64_data.pid_mutex);
+ if (the_config.consumerd64_bin_path.value &&
+ the_ustconsumer64_data.pid == 0 &&
cmd_ctx->lsm.cmd_type != LTTNG_REGISTER_CONSUMER) {
- pthread_mutex_unlock(&ustconsumer64_data.pid_mutex);
- ret = start_consumerd(&ustconsumer64_data);
+ pthread_mutex_unlock(&the_ustconsumer64_data.pid_mutex);
+ ret = start_consumerd(&the_ustconsumer64_data);
if (ret < 0) {
ret = LTTNG_ERR_UST_CONSUMER64_FAIL;
- uatomic_set(&ust_consumerd64_fd, -EINVAL);
+ uatomic_set(&the_ust_consumerd64_fd, -EINVAL);
goto error;
}
- uatomic_set(&ust_consumerd64_fd, ustconsumer64_data.cmd_sock);
- uatomic_set(&ust_consumerd_state, CONSUMER_STARTED);
+ uatomic_set(&the_ust_consumerd64_fd, the_ustconsumer64_data.cmd_sock);
+ uatomic_set(&the_ust_consumerd_state, CONSUMER_STARTED);
} else {
- pthread_mutex_unlock(&ustconsumer64_data.pid_mutex);
+ pthread_mutex_unlock(&the_ustconsumer64_data.pid_mutex);
}
/*
* Setup socket for consumer 64 bit. No need for atomic access
* since it was set above and can ONLY be set in this thread.
*/
- ret = consumer_create_socket(&ustconsumer64_data,
+ ret = consumer_create_socket(&the_ustconsumer64_data,
cmd_ctx->session->ust_session->consumer);
if (ret < 0) {
goto error;
}
/* 32-bit */
- pthread_mutex_lock(&ustconsumer32_data.pid_mutex);
- if (config.consumerd32_bin_path.value &&
- ustconsumer32_data.pid == 0 &&
+ pthread_mutex_lock(&the_ustconsumer32_data.pid_mutex);
+ if (the_config.consumerd32_bin_path.value &&
+ the_ustconsumer32_data.pid == 0 &&
cmd_ctx->lsm.cmd_type != LTTNG_REGISTER_CONSUMER) {
- pthread_mutex_unlock(&ustconsumer32_data.pid_mutex);
- ret = start_consumerd(&ustconsumer32_data);
+ pthread_mutex_unlock(&the_ustconsumer32_data.pid_mutex);
+ ret = start_consumerd(&the_ustconsumer32_data);
if (ret < 0) {
ret = LTTNG_ERR_UST_CONSUMER32_FAIL;
- uatomic_set(&ust_consumerd32_fd, -EINVAL);
+ uatomic_set(&the_ust_consumerd32_fd, -EINVAL);
goto error;
}
- uatomic_set(&ust_consumerd32_fd, ustconsumer32_data.cmd_sock);
- uatomic_set(&ust_consumerd_state, CONSUMER_STARTED);
+ uatomic_set(&the_ust_consumerd32_fd, the_ustconsumer32_data.cmd_sock);
+ uatomic_set(&the_ust_consumerd_state, CONSUMER_STARTED);
} else {
- pthread_mutex_unlock(&ustconsumer32_data.pid_mutex);
+ pthread_mutex_unlock(&the_ustconsumer32_data.pid_mutex);
}
/*
* Setup socket for consumer 32 bit. No need for atomic access
* since it was set above and can ONLY be set in this thread.
*/
- ret = consumer_create_socket(&ustconsumer32_data,
+ ret = consumer_create_socket(&the_ustconsumer32_data,
cmd_ctx->session->ust_session->consumer);
if (ret < 0) {
goto error;
case LTTNG_DOMAIN_LOG4J:
case LTTNG_DOMAIN_PYTHON:
case LTTNG_DOMAIN_UST:
- if (uatomic_read(&ust_consumerd_state) != CONSUMER_STARTED) {
+ if (uatomic_read(&the_ust_consumerd_state) != CONSUMER_STARTED) {
ret = LTTNG_ERR_NO_USTCONSUMERD;
goto error;
}
break;
case LTTNG_DOMAIN_KERNEL:
- if (uatomic_read(&kernel_consumerd_state) != CONSUMER_STARTED) {
+ if (uatomic_read(&the_kernel_consumerd_state) != CONSUMER_STARTED) {
ret = LTTNG_ERR_NO_KERNCONSUMERD;
goto error;
}
switch (cmd_ctx->lsm.cmd_type) {
case LTTNG_ADD_CONTEXT:
{
- /*
- * An LTTNG_ADD_CONTEXT command might have a supplementary
- * payload if the context being added is an application context.
- */
- if (cmd_ctx->lsm.u.context.ctx.ctx ==
- LTTNG_EVENT_CONTEXT_APP_CONTEXT) {
- char *provider_name = NULL, *context_name = NULL;
- size_t provider_name_len =
- cmd_ctx->lsm.u.context.provider_name_len;
- size_t context_name_len =
- cmd_ctx->lsm.u.context.context_name_len;
-
- if (provider_name_len == 0 || context_name_len == 0) {
- /*
- * Application provider and context names MUST
- * be provided.
- */
- ret = -LTTNG_ERR_INVALID;
- goto error;
- }
-
- provider_name = zmalloc(provider_name_len + 1);
- if (!provider_name) {
- ret = -LTTNG_ERR_NOMEM;
- goto error;
- }
- cmd_ctx->lsm.u.context.ctx.u.app_ctx.provider_name =
- provider_name;
-
- context_name = zmalloc(context_name_len + 1);
- if (!context_name) {
- ret = -LTTNG_ERR_NOMEM;
- goto error_add_context;
- }
- cmd_ctx->lsm.u.context.ctx.u.app_ctx.ctx_name =
- context_name;
-
- ret = lttcomm_recv_unix_sock(*sock, provider_name,
- provider_name_len);
- if (ret < 0) {
- goto error_add_context;
- }
+ struct lttng_event_context *event_context = NULL;
+ const enum lttng_error_code ret_code =
+ receive_lttng_event_context(
+ cmd_ctx, *sock, sock_error, &event_context);
- ret = lttcomm_recv_unix_sock(*sock, context_name,
- context_name_len);
- if (ret < 0) {
- goto error_add_context;
- }
- }
-
- /*
- * cmd_add_context assumes ownership of the provider and context
- * names.
- */
- ret = cmd_add_context(cmd_ctx->session,
- cmd_ctx->lsm.domain.type,
- cmd_ctx->lsm.u.context.channel_name,
- ALIGNED_CONST_PTR(cmd_ctx->lsm.u.context.ctx),
- kernel_poll_pipe[1]);
-
- cmd_ctx->lsm.u.context.ctx.u.app_ctx.provider_name = NULL;
- cmd_ctx->lsm.u.context.ctx.u.app_ctx.ctx_name = NULL;
-error_add_context:
- free(cmd_ctx->lsm.u.context.ctx.u.app_ctx.provider_name);
- free(cmd_ctx->lsm.u.context.ctx.u.app_ctx.ctx_name);
- if (ret < 0) {
+ if (ret_code != LTTNG_OK) {
+ ret = (int) ret_code;
goto error;
}
+
+ ret = cmd_add_context(cmd_ctx, event_context, the_kernel_poll_pipe[1]);
+ lttng_event_context_destroy(event_context);
break;
}
case LTTNG_DISABLE_CHANNEL:
cmd_ctx->lsm.u.disable.channel_name);
break;
}
- case LTTNG_DISABLE_EVENT:
- {
-
- /*
- * FIXME: handle filter; for now we just receive the filter's
- * bytecode along with the filter expression which are sent by
- * liblttng-ctl and discard them.
- *
- * This fixes an issue where the client may block while sending
- * the filter payload and encounter an error because the session
- * daemon closes the socket without ever handling this data.
- */
- size_t count = cmd_ctx->lsm.u.disable.expression_len +
- cmd_ctx->lsm.u.disable.bytecode_len;
-
- if (count) {
- char data[LTTNG_FILTER_MAX_LEN];
-
- DBG("Discarding disable event command payload of size %zu", count);
- while (count) {
- ret = lttcomm_recv_unix_sock(*sock, data,
- count > sizeof(data) ? sizeof(data) : count);
- if (ret < 0) {
- goto error;
- }
-
- count -= (size_t) ret;
- }
- }
- ret = cmd_disable_event(cmd_ctx->session, cmd_ctx->lsm.domain.type,
- cmd_ctx->lsm.u.disable.channel_name,
- ALIGNED_CONST_PTR(cmd_ctx->lsm.u.disable.event));
- break;
- }
case LTTNG_ENABLE_CHANNEL:
{
- cmd_ctx->lsm.u.channel.chan.attr.extended.ptr =
- (struct lttng_channel_extended *) &cmd_ctx->lsm.u.channel.extended;
- ret = cmd_enable_channel(cmd_ctx->session,
- ALIGNED_CONST_PTR(cmd_ctx->lsm.domain),
- ALIGNED_CONST_PTR(cmd_ctx->lsm.u.channel.chan),
- kernel_poll_pipe[1]);
+ ret = cmd_enable_channel(
+ cmd_ctx, *sock, the_kernel_poll_pipe[1]);
break;
}
case LTTNG_PROCESS_ATTR_TRACKER_ADD_INCLUDE_VALUE:
break;
}
case LTTNG_ENABLE_EVENT:
+ case LTTNG_DISABLE_EVENT:
{
- struct lttng_event *ev = NULL;
- struct lttng_event_exclusion *exclusion = NULL;
- struct lttng_filter_bytecode *bytecode = NULL;
- char *filter_expression = NULL;
-
- /* Handle exclusion events and receive it from the client. */
- if (cmd_ctx->lsm.u.enable.exclusion_count > 0) {
- size_t count = cmd_ctx->lsm.u.enable.exclusion_count;
-
- exclusion = zmalloc(sizeof(struct lttng_event_exclusion) +
- (count * LTTNG_SYMBOL_NAME_LEN));
- if (!exclusion) {
- ret = LTTNG_ERR_EXCLUSION_NOMEM;
- goto error;
- }
-
- DBG("Receiving var len exclusion event list from client ...");
- exclusion->count = count;
- ret = lttcomm_recv_unix_sock(*sock, exclusion->names,
- count * LTTNG_SYMBOL_NAME_LEN);
- if (ret <= 0) {
- DBG("Nothing recv() from client var len data... continuing");
- *sock_error = 1;
- free(exclusion);
- ret = LTTNG_ERR_EXCLUSION_INVAL;
- goto error;
- }
- }
-
- /* Get filter expression from client. */
- if (cmd_ctx->lsm.u.enable.expression_len > 0) {
- size_t expression_len =
- cmd_ctx->lsm.u.enable.expression_len;
-
- if (expression_len > LTTNG_FILTER_MAX_LEN) {
- ret = LTTNG_ERR_FILTER_INVAL;
- free(exclusion);
- goto error;
- }
+ struct lttng_event *event;
+ char *filter_expression;
+ struct lttng_event_exclusion *exclusions;
+ struct lttng_bytecode *bytecode;
+ const enum lttng_error_code ret_code = receive_lttng_event(
+ cmd_ctx, *sock, sock_error, &event,
+ &filter_expression, &bytecode, &exclusions);
- filter_expression = zmalloc(expression_len);
- if (!filter_expression) {
- free(exclusion);
- ret = LTTNG_ERR_FILTER_NOMEM;
- goto error;
- }
-
- /* Receive var. len. data */
- DBG("Receiving var len filter's expression from client ...");
- ret = lttcomm_recv_unix_sock(*sock, filter_expression,
- expression_len);
- if (ret <= 0) {
- DBG("Nothing recv() from client var len data... continuing");
- *sock_error = 1;
- free(filter_expression);
- free(exclusion);
- ret = LTTNG_ERR_FILTER_INVAL;
- goto error;
- }
- }
-
- /* Handle filter and get bytecode from client. */
- if (cmd_ctx->lsm.u.enable.bytecode_len > 0) {
- size_t bytecode_len = cmd_ctx->lsm.u.enable.bytecode_len;
-
- if (bytecode_len > LTTNG_FILTER_MAX_LEN) {
- ret = LTTNG_ERR_FILTER_INVAL;
- free(filter_expression);
- free(exclusion);
- goto error;
- }
-
- bytecode = zmalloc(bytecode_len);
- if (!bytecode) {
- free(filter_expression);
- free(exclusion);
- ret = LTTNG_ERR_FILTER_NOMEM;
- goto error;
- }
-
- /* Receive var. len. data */
- DBG("Receiving var len filter's bytecode from client ...");
- ret = lttcomm_recv_unix_sock(*sock, bytecode, bytecode_len);
- if (ret <= 0) {
- DBG("Nothing recv() from client var len data... continuing");
- *sock_error = 1;
- free(filter_expression);
- free(bytecode);
- free(exclusion);
- ret = LTTNG_ERR_FILTER_INVAL;
- goto error;
- }
-
- if ((bytecode->len + sizeof(*bytecode)) != bytecode_len) {
- free(filter_expression);
- free(bytecode);
- free(exclusion);
- ret = LTTNG_ERR_FILTER_INVAL;
- goto error;
- }
- }
-
- ev = lttng_event_copy(ALIGNED_CONST_PTR(cmd_ctx->lsm.u.enable.event));
- if (!ev) {
- DBG("Failed to copy event: %s",
- cmd_ctx->lsm.u.enable.event.name);
- free(filter_expression);
- free(bytecode);
- free(exclusion);
- ret = LTTNG_ERR_NOMEM;
+ if (ret_code != LTTNG_OK) {
+ ret = (int) ret_code;
goto error;
}
-
- if (cmd_ctx->lsm.u.enable.userspace_probe_location_len > 0) {
- /* Expect a userspace probe description. */
- ret = receive_userspace_probe(cmd_ctx, *sock, sock_error, ev);
- if (ret) {
- free(filter_expression);
- free(bytecode);
- free(exclusion);
- lttng_event_destroy(ev);
- goto error;
- }
- }
-
- ret = cmd_enable_event(cmd_ctx->session,
- ALIGNED_CONST_PTR(cmd_ctx->lsm.domain),
- cmd_ctx->lsm.u.enable.channel_name,
- ev,
- filter_expression, bytecode, exclusion,
- kernel_poll_pipe[1]);
- lttng_event_destroy(ev);
+ /*
+ * Ownership of filter_expression, exclusions, and bytecode is
+ * always transferred.
+ */
+ ret = cmd_ctx->lsm.cmd_type == LTTNG_ENABLE_EVENT ?
+ cmd_enable_event(cmd_ctx, event,
+ filter_expression, exclusions,
+ bytecode,
+ the_kernel_poll_pipe[1]) :
+ cmd_disable_event(cmd_ctx, event,
+ filter_expression, bytecode,
+ exclusions);
+ lttng_event_destroy(event);
break;
}
case LTTNG_LIST_TRACEPOINTS:
{
- struct lttng_event *events;
- ssize_t nb_events;
+ enum lttng_error_code ret_code;
+ size_t original_payload_size;
+ size_t payload_size;
+ const size_t command_header_size = sizeof(struct lttcomm_list_command_header);
+
+ ret = setup_empty_lttng_msg(cmd_ctx);
+ if (ret) {
+ ret = LTTNG_ERR_NOMEM;
+ goto setup_error;
+ }
+
+ original_payload_size = cmd_ctx->reply_payload.buffer.size;
session_lock_list();
- nb_events = cmd_list_tracepoints(cmd_ctx->lsm.domain.type, &events);
+ ret_code = cmd_list_tracepoints(cmd_ctx->lsm.domain.type,
+ &cmd_ctx->reply_payload);
session_unlock_list();
- if (nb_events < 0) {
- /* Return value is a negative lttng_error_code. */
- ret = -nb_events;
+ if (ret_code != LTTNG_OK) {
+ ret = (int) ret_code;
goto error;
}
- /*
- * Setup lttng message with payload size set to the event list size in
- * bytes and then copy list into the llm payload.
- */
- ret = setup_lttng_msg_no_cmd_header(cmd_ctx, events,
- sizeof(struct lttng_event) * nb_events);
- free(events);
-
- if (ret < 0) {
- goto setup_error;
- }
+ payload_size = cmd_ctx->reply_payload.buffer.size -
+ command_header_size - original_payload_size;
+ update_lttng_msg(cmd_ctx, command_header_size, payload_size);
ret = LTTNG_OK;
break;
}
case LTTNG_LIST_TRACEPOINT_FIELDS:
{
- struct lttng_event_field *fields;
- ssize_t nb_fields;
+ enum lttng_error_code ret_code;
+ size_t original_payload_size;
+ size_t payload_size;
+ const size_t command_header_size = sizeof(struct lttcomm_list_command_header);
+
+ ret = setup_empty_lttng_msg(cmd_ctx);
+ if (ret) {
+ ret = LTTNG_ERR_NOMEM;
+ goto setup_error;
+ }
+
+ original_payload_size = cmd_ctx->reply_payload.buffer.size;
session_lock_list();
- nb_fields = cmd_list_tracepoint_fields(cmd_ctx->lsm.domain.type,
- &fields);
+ ret_code = cmd_list_tracepoint_fields(
+ cmd_ctx->lsm.domain.type, &cmd_ctx->reply_payload);
session_unlock_list();
- if (nb_fields < 0) {
- /* Return value is a negative lttng_error_code. */
- ret = -nb_fields;
+ if (ret_code != LTTNG_OK) {
+ ret = (int) ret_code;
goto error;
}
- /*
- * Setup lttng message with payload size set to the event list size in
- * bytes and then copy list into the llm payload.
- */
- ret = setup_lttng_msg_no_cmd_header(cmd_ctx, fields,
- sizeof(struct lttng_event_field) * nb_fields);
- free(fields);
-
- if (ret < 0) {
- goto setup_error;
- }
+ payload_size = cmd_ctx->reply_payload.buffer.size -
+ command_header_size - original_payload_size;
+ update_lttng_msg(cmd_ctx, command_header_size, payload_size);
ret = LTTNG_OK;
break;
}
case LTTNG_LIST_SYSCALLS:
{
- struct lttng_event *events;
- ssize_t nb_events;
+ enum lttng_error_code ret_code;
+ size_t original_payload_size;
+ size_t payload_size;
+ const size_t command_header_size = sizeof(struct lttcomm_list_command_header);
- nb_events = cmd_list_syscalls(&events);
- if (nb_events < 0) {
- /* Return value is a negative lttng_error_code. */
- ret = -nb_events;
- goto error;
+ ret = setup_empty_lttng_msg(cmd_ctx);
+ if (ret) {
+ ret = LTTNG_ERR_NOMEM;
+ goto setup_error;
}
- /*
- * Setup lttng message with payload size set to the event list size in
- * bytes and then copy list into the llm payload.
- */
- ret = setup_lttng_msg_no_cmd_header(cmd_ctx, events,
- sizeof(struct lttng_event) * nb_events);
- free(events);
+ original_payload_size = cmd_ctx->reply_payload.buffer.size;
- if (ret < 0) {
- goto setup_error;
+ ret_code = cmd_list_syscalls(&cmd_ctx->reply_payload);
+ if (ret_code != LTTNG_OK) {
+ ret = (int) ret_code;
+ goto error;
}
+ payload_size = cmd_ctx->reply_payload.buffer.size -
+ command_header_size - original_payload_size;
+ update_lttng_msg(cmd_ctx, command_header_size, payload_size);
+
ret = LTTNG_OK;
break;
}
case LTTNG_DESTROY_SESSION:
{
ret = cmd_destroy_session(cmd_ctx->session,
- notification_thread_handle,
- sock);
+ the_notification_thread_handle, sock);
break;
}
case LTTNG_LIST_DOMAINS:
}
case LTTNG_LIST_CHANNELS:
{
- ssize_t payload_size;
- struct lttng_channel *channels = NULL;
+ enum lttng_error_code ret_code;
+ size_t original_payload_size;
+ size_t payload_size;
+ const size_t command_header_size = sizeof(struct lttcomm_list_command_header);
- payload_size = cmd_list_channels(cmd_ctx->lsm.domain.type,
- cmd_ctx->session, &channels);
- if (payload_size < 0) {
- /* Return value is a negative lttng_error_code. */
- ret = -payload_size;
- goto error;
+ ret = setup_empty_lttng_msg(cmd_ctx);
+ if (ret) {
+ ret = LTTNG_ERR_NOMEM;
+ goto setup_error;
}
- ret = setup_lttng_msg_no_cmd_header(cmd_ctx, channels,
- payload_size);
- free(channels);
+ original_payload_size = cmd_ctx->reply_payload.buffer.size;
- if (ret < 0) {
- goto setup_error;
+ ret_code = cmd_list_channels(cmd_ctx->lsm.domain.type,
+ cmd_ctx->session, &cmd_ctx->reply_payload);
+ if (ret_code != LTTNG_OK) {
+ ret = (int) ret_code;
+ goto error;
}
+ payload_size = cmd_ctx->reply_payload.buffer.size -
+ command_header_size - original_payload_size;
+ update_lttng_msg(cmd_ctx, command_header_size, payload_size);
+
ret = LTTNG_OK;
break;
}
case LTTNG_LIST_EVENTS:
{
- ssize_t list_ret;
- struct lttcomm_event_command_header cmd_header = {};
+ enum lttng_error_code ret_code;
size_t original_payload_size;
size_t payload_size;
+ const size_t command_header_size = sizeof(struct lttcomm_list_command_header);
ret = setup_empty_lttng_msg(cmd_ctx);
if (ret) {
original_payload_size = cmd_ctx->reply_payload.buffer.size;
- /* Extended infos are included at the end of the payload. */
- list_ret = cmd_list_events(cmd_ctx->lsm.domain.type,
+ ret_code = cmd_list_events(cmd_ctx->lsm.domain.type,
cmd_ctx->session,
- cmd_ctx->lsm.u.list.channel_name,
- &cmd_ctx->reply_payload);
- if (list_ret < 0) {
- /* Return value is a negative lttng_error_code. */
- ret = -list_ret;
+ cmd_ctx->lsm.u.list.channel_name, &cmd_ctx->reply_payload);
+ if (ret_code != LTTNG_OK) {
+ ret = (int) ret_code;
goto error;
}
payload_size = cmd_ctx->reply_payload.buffer.size -
- sizeof(cmd_header) - original_payload_size;
- update_lttng_msg(cmd_ctx, sizeof(cmd_header), payload_size);
+ command_header_size - original_payload_size;
+ update_lttng_msg(cmd_ctx, command_header_size, payload_size);
ret = LTTNG_OK;
break;
switch (cmd_ctx->lsm.domain.type) {
case LTTNG_DOMAIN_KERNEL:
- cdata = &kconsumer_data;
+ cdata = &the_kconsumer_data;
break;
default:
ret = LTTNG_ERR_UND;
original_reply_payload_size = cmd_ctx->reply_payload.buffer.size;
ret = cmd_register_trigger(&cmd_creds, payload_trigger,
- notification_thread_handle, &return_trigger);
+ cmd_ctx->lsm.u.trigger.is_trigger_anonymous,
+ the_notification_thread_handle,
+ &return_trigger);
if (ret != LTTNG_OK) {
lttng_trigger_put(payload_trigger);
goto error;
}
ret = cmd_unregister_trigger(&cmd_creds, payload_trigger,
- notification_thread_handle);
+ the_notification_thread_handle);
lttng_trigger_put(payload_trigger);
break;
}
schedule_type = (enum lttng_rotation_schedule_type) cmd_ctx->lsm.u.rotation_set_schedule.type;
value = cmd_ctx->lsm.u.rotation_set_schedule.value;
- ret = cmd_rotation_set_schedule(cmd_ctx->session,
- set_schedule,
- schedule_type,
- value,
- notification_thread_handle);
+ ret = cmd_rotation_set_schedule(cmd_ctx->session, set_schedule,
+ schedule_type, value,
+ the_notification_thread_handle);
if (ret != LTTNG_OK) {
goto error;
}
original_payload_size = cmd_ctx->reply_payload.buffer.size;
- ret = cmd_list_triggers(cmd_ctx,
- notification_thread_handle, &return_triggers);
+ ret = cmd_list_triggers(cmd_ctx, the_notification_thread_handle,
+ &return_triggers);
if (ret != LTTNG_OK) {
goto error;
}
ret = LTTNG_OK;
break;
}
+ case LTTNG_EXECUTE_ERROR_QUERY:
+ {
+ struct lttng_error_query *query;
+ const struct lttng_credentials cmd_creds = {
+ .uid = LTTNG_OPTIONAL_INIT_VALUE(cmd_ctx->creds.uid),
+ .gid = LTTNG_OPTIONAL_INIT_VALUE(cmd_ctx->creds.gid),
+ };
+ struct lttng_error_query_results *results = NULL;
+ size_t original_payload_size;
+ size_t payload_size;
+
+ ret = setup_empty_lttng_msg(cmd_ctx);
+ if (ret) {
+ ret = LTTNG_ERR_NOMEM;
+ goto setup_error;
+ }
+
+ original_payload_size = cmd_ctx->reply_payload.buffer.size;
+
+ ret = receive_lttng_error_query(
+ cmd_ctx, *sock, sock_error, &query);
+ if (ret != LTTNG_OK) {
+ goto error;
+ }
+
+ ret = cmd_execute_error_query(&cmd_creds, query, &results,
+ the_notification_thread_handle);
+ lttng_error_query_destroy(query);
+ if (ret != LTTNG_OK) {
+ goto error;
+ }
+
+ assert(results);
+ ret = lttng_error_query_results_serialize(
+ results, &cmd_ctx->reply_payload);
+ lttng_error_query_results_destroy(results);
+ if (ret) {
+ ERR("Failed to serialize error query result set in reply to `execute error query` command");
+ ret = LTTNG_ERR_NOMEM;
+ goto error;
+ }
+
+ payload_size = cmd_ctx->reply_payload.buffer.size -
+ original_payload_size;
+
+ update_lttng_msg(cmd_ctx, 0, payload_size);
+
+ ret = LTTNG_OK;
+
+ break;
+ }
default:
ret = LTTNG_ERR_UND;
break;
static int create_client_sock(void)
{
int ret, client_sock;
- const mode_t old_umask = umask(0);
/* Create client tool unix socket */
- client_sock = lttcomm_create_unix_sock(config.client_unix_sock_path.value);
+ client_sock = lttcomm_create_unix_sock(
+ the_config.client_unix_sock_path.value);
if (client_sock < 0) {
- ERR("Create unix sock failed: %s", config.client_unix_sock_path.value);
+ ERR("Create unix sock failed: %s",
+ the_config.client_unix_sock_path.value);
ret = -1;
goto end;
}
}
/* File permission MUST be 660 */
- ret = chmod(config.client_unix_sock_path.value, S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP);
+ ret = chmod(the_config.client_unix_sock_path.value,
+ S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP);
if (ret < 0) {
ERR("Set file permissions failed: %s",
- config.client_unix_sock_path.value);
+ the_config.client_unix_sock_path.value);
PERROR("chmod");
(void) lttcomm_close_unix_sock(client_sock);
ret = -1;
DBG("Created client socket (fd = %i)", client_sock);
ret = client_sock;
end:
- umask(old_umask);
return ret;
}
rcu_register_thread();
- health_register(health_sessiond, HEALTH_SESSIOND_TYPE_CMD);
+ health_register(the_health_sessiond, HEALTH_SESSIOND_TYPE_CMD);
health_code_update();
continue;
}
+ if (ret < LTTNG_OK || ret >= LTTNG_ERR_NR) {
+ WARN("Command returned an invalid status code, returning unknown error: "
+ "command type = %s (%d), ret = %d",
+ lttcomm_sessiond_command_str(cmd_ctx.lsm.cmd_type),
+ cmd_ctx.lsm.cmd_type, ret);
+ ret = LTTNG_ERR_UNK;
+ }
+
cmd_completion_handler = cmd_pop_completion_handler();
if (cmd_completion_handler) {
enum lttng_error_code completion_code;
error_listen:
error_create_poll:
- unlink(config.client_unix_sock_path.value);
+ unlink(the_config.client_unix_sock_path.value);
ret = close(client_sock);
if (ret) {
PERROR("close");
ERR("Health error occurred in %s", __func__);
}
- health_unregister(health_sessiond);
+ health_unregister(the_health_sessiond);
DBG("Client thread dying");
lttng_payload_reset(&cmd_ctx.reply_payload);
projects / lttng-tools.git / blobdiff