*/
#define _LGPL_SOURCE
-#include <assert.h>
#include <grp.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <common/bytecode/bytecode.h>
+#include <common/align.h>
#include <common/common.h>
#include <common/compat/errno.h>
#include <common/compat/string.h>
#include <common/defaults.h>
-#include <common/dynamic-buffer.h>
#include <common/dynamic-array.h>
-#include <common/payload.h>
+#include <common/dynamic-buffer.h>
#include <common/payload-view.h>
+#include <common/payload.h>
#include <common/sessiond-comm/sessiond-comm.h>
#include <common/tracker.h>
#include <common/unix.h>
#include <lttng/channel-internal.h>
#include <lttng/destruction-handle.h>
#include <lttng/endpoint.h>
+#include <lttng/error-query-internal.h>
#include <lttng/event-internal.h>
#include <lttng/health-internal.h>
+#include <lttng/lttng-error.h>
#include <lttng/lttng.h>
#include <lttng/session-descriptor-internal.h>
#include <lttng/session-internal.h>
#include <lttng/trigger/trigger-internal.h>
#include <lttng/userspace-probe-internal.h>
-#include <lttng/lttng-error.h>
+#include "lttng-ctl-helper.h"
#include <common/filter/filter-ast.h>
#include <common/filter/filter-parser.h>
#include <common/filter/memstream.h>
-#include "lttng-ctl-helper.h"
#define COPY_DOMAIN_PACKED(dst, src) \
do { \
*
* If domain is unknown, default domain will be the kernel.
*/
-LTTNG_HIDDEN
void lttng_ctl_copy_lttng_domain(struct lttng_domain *dst,
struct lttng_domain *src)
{
{
int ret;
- assert(len > 0);
+ LTTNG_ASSERT(len > 0);
if (!connected) {
ret = -LTTNG_ERR_NO_SESSIOND;
*
* If yes return 1, else return -1.
*/
-LTTNG_HIDDEN
int lttng_check_tracing_group(void)
{
gid_t *grp_list, tracing_gid;
in_tgroup = lttng_check_tracing_group();
}
- if ((uid == 0) || in_tgroup) {
+ if ((uid == 0) || in_tgroup == 1) {
const int ret = lttng_strncpy(sessiond_sock_path,
DEFAULT_GLOBAL_CLIENT_UNIX_SOCK,
sizeof(sessiond_sock_path));
*
* On success, return the socket's file descriptor. On error, return -1.
*/
-LTTNG_HIDDEN int connect_sessiond(void)
+int connect_sessiond(void)
{
int ret;
*
* Return size of data (only payload, not header) or a negative error code.
*/
-LTTNG_HIDDEN
int lttng_ctl_ask_sessiond_fds_varlen(struct lttcomm_session_msg *lsm,
const int *fds, size_t nb_fd, const void *vardata,
size_t vardata_len, void **user_payload_buf,
return ret;
}
-LTTNG_HIDDEN
int lttng_ctl_ask_sessiond_payload(struct lttng_payload_view *message,
struct lttng_payload *reply)
{
struct lttcomm_lttng_msg llm;
const int fd_count = lttng_payload_view_get_fd_handle_count(message);
- assert(reply->buffer.size == 0);
- assert(lttng_dynamic_pointer_array_get_count(&reply->_fd_handles) == 0);
+ LTTNG_ASSERT(reply->buffer.size == 0);
+ LTTNG_ASSERT(lttng_dynamic_pointer_array_get_count(&reply->_fd_handles) == 0);
ret = connect_sessiond();
if (ret < 0) {
int err;
char *agent_filter = NULL;
- assert(ev);
+ LTTNG_ASSERT(ev);
/* Don't add filter for the '*' event. */
if (strcmp(ev->name, "*") != 0) {
if (ev->name[0] == '\0') {
/* Enable all events. */
ret = lttng_strncpy(ev->name, "*", sizeof(ev->name));
- assert(ret == 0);
+ LTTNG_ASSERT(ret == 0);
}
COPY_DOMAIN_PACKED(lsm.domain, handle->domain);
for (i = 0; i < exclusion_count; i++) {
size_t exclusion_len;
- exclusion_len = lttng_strnlen(*(exclusion_list + i),
+ exclusion_len = lttng_strnlen(exclusion_list[i],
LTTNG_SYMBOL_NAME_LEN);
if (exclusion_len == LTTNG_SYMBOL_NAME_LEN) {
/* Exclusion is not NULL-terminated. */
}
ret = lttng_dynamic_buffer_append(&payload.buffer,
- *(exclusion_list + i), LTTNG_SYMBOL_NAME_LEN);
+ exclusion_list[i], exclusion_len);
+ if (ret) {
+ goto mem_error;
+ }
+
+ /*
+ * Padding the rest of the entry with zeros. Every exclusion
+ * entries take LTTNG_SYMBOL_NAME_LEN bytes in the buffer.
+ */
+ ret = lttng_dynamic_buffer_set_size(&payload.buffer,
+ LTTNG_SYMBOL_NAME_LEN * (i + 1));
if (ret) {
goto mem_error;
}
goto mem_error;
}
- assert(fd_count == 0 || fd_count == 1);
+ LTTNG_ASSERT(fd_count == 0 || fd_count == 1);
if (fd_count == 1) {
- struct fd_handle *handle =
+ struct fd_handle *h =
lttng_payload_view_pop_fd_handle(&view);
- if (!handle) {
+ if (!h) {
goto mem_error;
}
- fd_to_send = fd_handle_get_fd(handle);
- fd_handle_put(handle);
+ fd_to_send = fd_handle_get_fd(h);
+ fd_handle_put(h);
}
ret = lttng_ctl_ask_sessiond_fds_varlen(&lsm,
ret = (int) -ret_code;
goto end;
}
- assert(handle);
+ LTTNG_ASSERT(handle);
/* Block until the completion of the destruction of the session. */
status = lttng_destruction_handle_wait_for_completion(handle, -1);
enum lttng_error_code ret_code;
ret_code = lttng_destroy_session_ext(session_name, NULL);
- return ret_code == LTTNG_OK ? ret_code : -ret_code;
+ return ret_code == LTTNG_OK ? 0 : -ret_code;
}
/*
storage_req += ext_comm->nb_exclusions *
LTTNG_SYMBOL_NAME_LEN;
/* Padding to ensure the flat probe is aligned. */
- storage_req = ALIGN_TO(storage_req, sizeof(uint64_t));
+ storage_req = lttng_align_ceil(storage_req, sizeof(uint64_t));
storage_req += probe_storage_req;
}
}
/* Insert padding to align to 64-bits. */
ret = lttng_dynamic_buffer_set_size(&listing,
- ALIGN_TO(listing.size,
+ lttng_align_ceil(listing.size,
sizeof(uint64_t)));
if (ret) {
ret = -LTTNG_ERR_NOMEM;
* No socket path set. Weird error which means the constructor
* was not called.
*/
- assert(0);
+ abort();
}
ret = try_connect_sessiond(sessiond_sock_path);
return ret;
}
-int lttng_register_trigger(struct lttng_trigger *trigger)
+static
+int _lttng_register_trigger(struct lttng_trigger *trigger, const char *name,
+ bool generate_name)
{
int ret;
struct lttcomm_session_msg lsm = {
.cmd_type = LTTNG_REGISTER_TRIGGER,
+ .u.trigger.is_trigger_anonymous = !name && !generate_name,
};
struct lttcomm_session_msg *message_lsm;
struct lttng_payload message;
.uid = LTTNG_OPTIONAL_INIT_VALUE(geteuid()),
.gid = LTTNG_OPTIONAL_INIT_UNSET,
};
-
+ const char *unused_trigger_name = NULL;
+ enum lttng_trigger_status trigger_status;
lttng_payload_init(&message);
lttng_payload_init(&reply);
goto end;
}
+ trigger_status = lttng_trigger_get_name(trigger, &unused_trigger_name);
+ if (trigger_status != LTTNG_TRIGGER_STATUS_UNSET) {
+ /* Re-using already registered trigger. */
+ ret = -LTTNG_ERR_INVALID;
+ goto end;
+ }
+
+ if (name) {
+ trigger_status = lttng_trigger_set_name(trigger, name);
+ if (trigger_status != LTTNG_TRIGGER_STATUS_OK) {
+ ret = -LTTNG_ERR_NOMEM;
+ goto end;
+ }
+ }
+
if (!trigger->creds.uid.is_set) {
/* Use the client's credentials as the trigger credentials. */
lttng_trigger_set_credentials(trigger, &user_creds);
if (!lttng_credentials_is_equal_uid(trigger_creds, &user_creds)) {
if (lttng_credentials_get_uid(&user_creds) != 0) {
ret = -LTTNG_ERR_EPERM;
- goto end;
+ goto end_unset_name;
}
}
}
if (!lttng_trigger_validate(trigger)) {
ret = -LTTNG_ERR_INVALID_TRIGGER;
- goto end;
+ goto end_unset_name;
}
domain_type = lttng_trigger_get_underlying_domain_type_restriction(
ret = lttng_dynamic_buffer_append(&message.buffer, &lsm, sizeof(lsm));
if (ret) {
ret = -LTTNG_ERR_NOMEM;
- goto end;
+ goto end_unset_name;
}
ret = lttng_trigger_serialize(trigger, &message);
if (ret < 0) {
ret = -LTTNG_ERR_UNK;
- goto end;
+ goto end_unset_name;
}
/*
&message_view);
ret = lttng_ctl_ask_sessiond_payload(&message_view, &reply);
if (ret < 0) {
- goto end;
+ goto end_unset_name;
}
}
ret = lttng_trigger_create_from_payload(
&reply_view, &reply_trigger);
if (ret < 0) {
- ret = -LTTNG_ERR_FATAL;
- goto end;
+ ret = -LTTNG_ERR_INVALID_PROTOCOL;
+ goto end_unset_name;
}
}
- ret = lttng_trigger_assign_name(trigger, reply_trigger);
- if (ret < 0) {
- ret = -LTTNG_ERR_FATAL;
- goto end;
+ if (name || generate_name) {
+ ret = lttng_trigger_assign_name(trigger, reply_trigger);
+ if (ret < 0) {
+ ret = -LTTNG_ERR_NOMEM;
+ goto end;
+ }
}
ret = 0;
+ goto end;
+
+end_unset_name:
+ trigger_status = lttng_trigger_set_name(trigger, NULL);
+ if (trigger_status != LTTNG_TRIGGER_STATUS_OK) {
+ ret = -LTTNG_ERR_UNK;
+ }
end:
lttng_payload_reset(&message);
lttng_payload_reset(&reply);
return ret;
}
+int lttng_register_trigger(struct lttng_trigger *trigger)
+{
+ /* Register an anonymous trigger. */
+ return _lttng_register_trigger(trigger, NULL, false);
+}
+
+enum lttng_error_code lttng_register_trigger_with_name(
+ struct lttng_trigger *trigger, const char *name)
+{
+ const int ret = _lttng_register_trigger(trigger, name, false);
+
+ return ret == 0 ? LTTNG_OK : (enum lttng_error_code) -ret;
+}
+
+enum lttng_error_code lttng_register_trigger_with_automatic_name(
+ struct lttng_trigger *trigger)
+{
+ const int ret = _lttng_register_trigger(trigger, false, true);
+
+ return ret == 0 ? LTTNG_OK : (enum lttng_error_code) -ret;
+}
+
+enum lttng_error_code lttng_error_query_execute(
+ const struct lttng_error_query *query,
+ const struct lttng_endpoint *endpoint,
+ struct lttng_error_query_results **results)
+{
+ int ret;
+ enum lttng_error_code ret_code;
+ struct lttcomm_session_msg lsm = {
+ .cmd_type = LTTNG_EXECUTE_ERROR_QUERY,
+ };
+ struct lttng_payload message;
+ struct lttng_payload reply;
+ struct lttcomm_session_msg *message_lsm;
+
+ lttng_payload_init(&message);
+ lttng_payload_init(&reply);
+
+ if (!query || !results) {
+ ret_code = LTTNG_ERR_INVALID;
+ goto end;
+ }
+
+ if (endpoint != lttng_session_daemon_command_endpoint) {
+ ret_code = LTTNG_ERR_INVALID_ERROR_QUERY_TARGET;
+ goto end;
+ }
+
+ ret = lttng_dynamic_buffer_append(&message.buffer, &lsm, sizeof(lsm));
+ if (ret) {
+ ret_code = LTTNG_ERR_NOMEM;
+ goto end;
+ }
+
+ ret = lttng_error_query_serialize(query, &message);
+ if (ret) {
+ ret_code = LTTNG_ERR_UNK;
+ goto end;
+ }
+
+ message_lsm = (struct lttcomm_session_msg *) message.buffer.data;
+ message_lsm->u.error_query.length =
+ (uint32_t) message.buffer.size - sizeof(lsm);
+
+ {
+ struct lttng_payload_view message_view =
+ lttng_payload_view_from_payload(
+ &message, 0, -1);
+
+ message_lsm->fd_count = lttng_payload_view_get_fd_handle_count(
+ &message_view);
+ ret = lttng_ctl_ask_sessiond_payload(&message_view, &reply);
+ if (ret < 0) {
+ ret_code = -ret;
+ goto end;
+ }
+ }
+
+ {
+ ssize_t reply_create_ret;
+ struct lttng_payload_view reply_view =
+ lttng_payload_view_from_payload(
+ &reply, 0, reply.buffer.size);
+
+ reply_create_ret = lttng_error_query_results_create_from_payload(
+ &reply_view, results);
+ if (reply_create_ret < 0) {
+ ret_code = LTTNG_ERR_INVALID_PROTOCOL;
+ goto end;
+ }
+ }
+
+ ret_code = LTTNG_OK;
+end:
+ lttng_payload_reset(&message);
+ lttng_payload_reset(&reply);
+ return ret_code;
+}
+
int lttng_unregister_trigger(const struct lttng_trigger *trigger)
{
int ret;
goto end;
}
- /*
- * This is needed to populate the trigger object size for the command
- * header and number of fds sent.
- */
- message_lsm = (struct lttcomm_session_msg *) message.buffer.data;
-
ret = lttng_trigger_serialize(copy, &message);
if (ret < 0) {
ret = -LTTNG_ERR_UNK;
goto end;
}
+ /*
+ * This is needed to populate the trigger object size for the command
+ * header and number of fds sent.
+ */
+ message_lsm = (struct lttcomm_session_msg *) message.buffer.data;
+
message_lsm->u.trigger.length = (uint32_t) message.buffer.size - sizeof(lsm);
{
projects / lttng-tools.git / blobdiff