#include <lttng/lttng.h>
#include <lttng/snapshot.h>
#include <lttng/rotation.h>
+#include <lttng/userspace-probe.h>
#include "session-config.h"
#include "config-internal.h"
+#define CONFIG_USERSPACE_PROBE_LOOKUP_METHOD_NAME_MAX_LEN 7
+
struct handler_filter_args {
const char* section;
config_entry_handler_cb handler;
const char * const config_element_symbol_name = "symbol_name";
const char * const config_element_address = "address";
const char * const config_element_offset = "offset";
+
+LTTNG_HIDDEN const char * const config_element_userspace_probe_lookup = "lookup_method";
+LTTNG_HIDDEN const char * const config_element_userspace_probe_lookup_function_default = "DEFAULT";
+LTTNG_HIDDEN const char * const config_element_userspace_probe_lookup_function_elf = "ELF";
+LTTNG_HIDDEN const char * const config_element_userspace_probe_lookup_tracepoint_sdt = "SDT";
+LTTNG_HIDDEN const char * const config_element_userspace_probe_location_binary_path = "binary_path";
+LTTNG_HIDDEN const char * const config_element_userspace_probe_function_attributes = "userspace_probe_function_attributes";
+LTTNG_HIDDEN const char * const config_element_userspace_probe_function_location_function_name = "function_name";
+LTTNG_HIDDEN const char * const config_element_userspace_probe_tracepoint_attributes = "userspace_probe_tracepoint_attributes";
+LTTNG_HIDDEN const char * const config_element_userspace_probe_tracepoint_location_provider_name = "provider_name";
+LTTNG_HIDDEN const char * const config_element_userspace_probe_tracepoint_location_probe_name = "probe_name";
+
const char * const config_element_name = "name";
const char * const config_element_enabled = "enabled";
const char * const config_element_overwrite_mode = "overwrite_mode";
const char * const config_event_type_all = "ALL";
const char * const config_event_type_tracepoint = "TRACEPOINT";
const char * const config_event_type_probe = "PROBE";
+LTTNG_HIDDEN const char * const config_event_type_userspace_probe = "USERSPACE_PROBE";
const char * const config_event_type_function = "FUNCTION";
const char * const config_event_type_function_entry = "FUNCTION_ENTRY";
const char * const config_event_type_noop = "NOOP";
LTTNG_HIDDEN const char * const config_event_context_migratable = "MIGRATABLE";
LTTNG_HIDDEN const char * const config_event_context_callstack_user= "CALLSTACK_USER";
LTTNG_HIDDEN const char * const config_event_context_callstack_kernel = "CALLSTACK_KERNEL";
+LTTNG_HIDDEN const char * const config_event_context_cgroup_ns = "CGROUP_NS";
+LTTNG_HIDDEN const char * const config_event_context_ipc_ns = "IPC_NS";
+LTTNG_HIDDEN const char * const config_event_context_mnt_ns = "MNT_NS";
+LTTNG_HIDDEN const char * const config_event_context_net_ns = "NET_NS";
+LTTNG_HIDDEN const char * const config_event_context_pid_ns = "PID_NS";
+LTTNG_HIDDEN const char * const config_event_context_user_ns = "USER_NS";
+LTTNG_HIDDEN const char * const config_event_context_uts_ns = "UTS_NS";
+LTTNG_HIDDEN const char * const config_event_context_uid = "UID";
+LTTNG_HIDDEN const char * const config_event_context_euid = "EUID";
+LTTNG_HIDDEN const char * const config_event_context_suid = "SUID";
+LTTNG_HIDDEN const char * const config_event_context_gid = "GID";
+LTTNG_HIDDEN const char * const config_event_context_egid = "EGID";
+LTTNG_HIDDEN const char * const config_event_context_sgid = "SGID";
+LTTNG_HIDDEN const char * const config_event_context_vuid = "VUID";
+LTTNG_HIDDEN const char * const config_event_context_veuid = "VEUID";
+LTTNG_HIDDEN const char * const config_event_context_vsuid = "VSUID";
+LTTNG_HIDDEN const char * const config_event_context_vgid = "VGID";
+LTTNG_HIDDEN const char * const config_event_context_vegid = "VEGID";
+LTTNG_HIDDEN const char * const config_event_context_vsgid = "VSGID";
/* Deprecated symbols */
const char * const config_element_perf;
config_entry_handler_cb handler, void *user_data)
{
int ret = 0;
- char *path;
+ const char *path;
FILE *config_file = NULL;
struct handler_filter_args filter = { section, handler, user_data };
ret = LTTNG_EVENT_TRACEPOINT;
} else if (!strcmp((char *) event_type, config_event_type_probe)) {
ret = LTTNG_EVENT_PROBE;
+ } else if (!strcmp((char *) event_type,
+ config_event_type_userspace_probe)) {
+ ret = LTTNG_EVENT_USERSPACE_PROBE;
} else if (!strcmp((char *) event_type, config_event_type_function)) {
ret = LTTNG_EVENT_FUNCTION;
} else if (!strcmp((char *) event_type,
- config_event_type_function_entry)) {
+ config_event_type_function_entry)) {
ret = LTTNG_EVENT_FUNCTION_ENTRY;
} else if (!strcmp((char *) event_type, config_event_type_noop)) {
ret = LTTNG_EVENT_NOOP;
} else if (!strcmp((char *) context_type,
config_event_context_callstack_kernel)) {
ret = LTTNG_EVENT_CONTEXT_CALLSTACK_KERNEL;
+ } else if (!strcmp((char *) context_type,
+ config_event_context_cgroup_ns)) {
+ ret = LTTNG_EVENT_CONTEXT_CGROUP_NS;
+ } else if (!strcmp((char *) context_type,
+ config_event_context_ipc_ns)) {
+ ret = LTTNG_EVENT_CONTEXT_IPC_NS;
+ } else if (!strcmp((char *) context_type,
+ config_event_context_mnt_ns)) {
+ ret = LTTNG_EVENT_CONTEXT_MNT_NS;
+ } else if (!strcmp((char *) context_type,
+ config_event_context_net_ns)) {
+ ret = LTTNG_EVENT_CONTEXT_NET_NS;
+ } else if (!strcmp((char *) context_type,
+ config_event_context_pid_ns)) {
+ ret = LTTNG_EVENT_CONTEXT_PID_NS;
+ } else if (!strcmp((char *) context_type,
+ config_event_context_user_ns)) {
+ ret = LTTNG_EVENT_CONTEXT_USER_NS;
+ } else if (!strcmp((char *) context_type,
+ config_event_context_uts_ns)) {
+ ret = LTTNG_EVENT_CONTEXT_UTS_NS;
+ } else if (!strcmp((char *) context_type,
+ config_event_context_uid)) {
+ ret = LTTNG_EVENT_CONTEXT_UID;
+ } else if (!strcmp((char *) context_type,
+ config_event_context_euid)) {
+ ret = LTTNG_EVENT_CONTEXT_EUID;
+ } else if (!strcmp((char *) context_type,
+ config_event_context_suid)) {
+ ret = LTTNG_EVENT_CONTEXT_SUID;
+ } else if (!strcmp((char *) context_type,
+ config_event_context_gid)) {
+ ret = LTTNG_EVENT_CONTEXT_GID;
+ } else if (!strcmp((char *) context_type,
+ config_event_context_egid)) {
+ ret = LTTNG_EVENT_CONTEXT_EGID;
+ } else if (!strcmp((char *) context_type,
+ config_event_context_sgid)) {
+ ret = LTTNG_EVENT_CONTEXT_SGID;
+ } else if (!strcmp((char *) context_type,
+ config_event_context_vuid)) {
+ ret = LTTNG_EVENT_CONTEXT_VUID;
+ } else if (!strcmp((char *) context_type,
+ config_event_context_veuid)) {
+ ret = LTTNG_EVENT_CONTEXT_VEUID;
+ } else if (!strcmp((char *) context_type,
+ config_event_context_vsuid)) {
+ ret = LTTNG_EVENT_CONTEXT_VSUID;
+ } else if (!strcmp((char *) context_type,
+ config_event_context_vgid)) {
+ ret = LTTNG_EVENT_CONTEXT_VGID;
+ } else if (!strcmp((char *) context_type,
+ config_event_context_vegid)) {
+ ret = LTTNG_EVENT_CONTEXT_VEGID;
+ } else if (!strcmp((char *) context_type,
+ config_event_context_vsgid)) {
+ ret = LTTNG_EVENT_CONTEXT_VSGID;
} else {
goto error;
}
free(output.data_uri);
return ret;
}
+
+static
+struct lttng_userspace_probe_location *
+process_userspace_probe_function_attribute_node(
+ xmlNodePtr attribute_node)
+{
+ xmlNodePtr function_attribute_node;
+ char *function_name = NULL, *binary_path = NULL;
+ struct lttng_userspace_probe_location *location = NULL;
+ struct lttng_userspace_probe_location_lookup_method *lookup_method = NULL;
+
+ /*
+ * Process userspace probe location function attributes. The order of
+ * the fields are not guaranteed so we need to iterate over all fields
+ * and check at the end if everything we need for this location type is
+ * there.
+ */
+ for (function_attribute_node =
+ xmlFirstElementChild(attribute_node);
+ function_attribute_node;
+ function_attribute_node = xmlNextElementSibling(
+ function_attribute_node)) {
+ /* Handle function name, binary path and lookup method. */
+ if (!strcmp((const char *) function_attribute_node->name,
+ config_element_userspace_probe_function_location_function_name)) {
+ function_name = (char *) xmlNodeGetContent(function_attribute_node);
+ if (!function_name) {
+ goto error;
+ }
+ } else if (!strcmp((const char *) function_attribute_node->name,
+ config_element_userspace_probe_location_binary_path)) {
+ binary_path = (char *) xmlNodeGetContent(function_attribute_node);
+ if (!binary_path) {
+ goto error;
+ }
+ } else if (!strcmp((const char *) function_attribute_node->name,
+ config_element_userspace_probe_lookup)) {
+ char *lookup_method_name;
+
+ lookup_method_name = (char *) xmlNodeGetContent(
+ function_attribute_node);
+ if (!lookup_method_name) {
+ goto error;
+ }
+
+ /*
+ * function_default lookup method defaults to
+ * function_elf lookup method at the moment.
+ */
+ if (!strcmp(lookup_method_name, config_element_userspace_probe_lookup_function_elf)
+ || !strcmp(lookup_method_name, config_element_userspace_probe_lookup_function_default)) {
+ lookup_method = lttng_userspace_probe_location_lookup_method_function_elf_create();
+ if (!lookup_method) {
+ PERROR("Error creating function default/ELF lookup method");
+ }
+ } else {
+ WARN("Unknown function lookup method");
+ }
+
+ free(lookup_method_name);
+ if (!lookup_method) {
+ goto error;
+ }
+ } else {
+ goto error;
+ }
+
+ /* Check if all the necessary fields were found. */
+ if (binary_path && function_name && lookup_method) {
+ /* Ownership of lookup_method is transferred. */
+ location =
+ lttng_userspace_probe_location_function_create(
+ binary_path, function_name,
+ lookup_method);
+ lookup_method = NULL;
+ goto error;
+ }
+ }
+error:
+ lttng_userspace_probe_location_lookup_method_destroy(lookup_method);
+ free(binary_path);
+ free(function_name);
+ return location;
+}
+
+static
+struct lttng_userspace_probe_location *
+process_userspace_probe_tracepoint_attribute_node(
+ xmlNodePtr attribute_node)
+{
+ xmlNodePtr tracepoint_attribute_node;
+ char *probe_name = NULL, *provider_name = NULL, *binary_path = NULL;
+ struct lttng_userspace_probe_location *location = NULL;
+ struct lttng_userspace_probe_location_lookup_method *lookup_method = NULL;
+
+ /*
+ * Process userspace probe location tracepoint attributes. The order of
+ * the fields are not guaranteed so we need to iterate over all fields
+ * and check at the end if everything we need for this location type is
+ * there.
+ */
+ for (tracepoint_attribute_node =
+ xmlFirstElementChild(attribute_node); tracepoint_attribute_node;
+ tracepoint_attribute_node = xmlNextElementSibling(
+ tracepoint_attribute_node)) {
+ if (!strcmp((const char *) tracepoint_attribute_node->name,
+ config_element_userspace_probe_tracepoint_location_probe_name)) {
+ probe_name = (char *) xmlNodeGetContent(tracepoint_attribute_node);
+ if (!probe_name) {
+ goto error;
+ }
+ } else if (!strcmp((const char *) tracepoint_attribute_node->name,
+ config_element_userspace_probe_tracepoint_location_provider_name)) {
+ provider_name = (char *) xmlNodeGetContent(tracepoint_attribute_node);
+ if (!provider_name) {
+ goto error;
+ }
+ } else if (!strcmp((const char *) tracepoint_attribute_node->name,
+ config_element_userspace_probe_location_binary_path)) {
+ binary_path = (char *) xmlNodeGetContent(tracepoint_attribute_node);
+ if (!binary_path) {
+ goto error;
+ }
+ } else if (!strcmp((const char *) tracepoint_attribute_node->name,
+ config_element_userspace_probe_lookup)) {
+ char *lookup_method_name;
+
+ lookup_method_name = (char *) xmlNodeGetContent(
+ tracepoint_attribute_node);
+ if (!lookup_method_name) {
+ goto error;
+ }
+
+ if (!strcmp(lookup_method_name,
+ config_element_userspace_probe_lookup_tracepoint_sdt)) {
+ lookup_method =
+ lttng_userspace_probe_location_lookup_method_tracepoint_sdt_create();
+ if (!lookup_method) {
+ PERROR("Error creating tracepoint SDT lookup method");
+ }
+ } else {
+ WARN("Unknown tracepoint lookup method");
+ }
+
+ free(lookup_method_name);
+ if (!lookup_method) {
+ goto error;
+ }
+ } else {
+ WARN("Unknown tracepoint attribute");
+ goto error;
+ }
+
+ /* Check if all the necessary fields were found. */
+ if (binary_path && provider_name && probe_name && lookup_method) {
+ /* Ownership of lookup_method is transferred. */
+ location =
+ lttng_userspace_probe_location_tracepoint_create(
+ binary_path, provider_name,
+ probe_name, lookup_method);
+ lookup_method = NULL;
+ goto error;
+ }
+ }
+error:
+ lttng_userspace_probe_location_lookup_method_destroy(lookup_method);
+ free(binary_path);
+ free(provider_name);
+ free(probe_name);
+ return location;
+}
+
static
int process_probe_attribute_node(xmlNodePtr probe_attribute_node,
struct lttng_event_probe_attr *attr)
{
int ret = 0, i;
xmlNodePtr node;
- struct lttng_event event;
+ struct lttng_event *event;
char **exclusions = NULL;
unsigned long exclusion_count = 0;
char *filter_expression = NULL;
assert(handle);
assert(channel_name);
- memset(&event, 0, sizeof(event));
+ event = lttng_event_create();
+ if (!event) {
+ ret = -LTTNG_ERR_NOMEM;
+ goto end;
+ }
/* Initialize default log level which varies by domain */
switch (handle->domain.type)
{
case LTTNG_DOMAIN_JUL:
- event.loglevel = LTTNG_LOGLEVEL_JUL_ALL;
+ event->loglevel = LTTNG_LOGLEVEL_JUL_ALL;
break;
case LTTNG_DOMAIN_LOG4J:
- event.loglevel = LTTNG_LOGLEVEL_LOG4J_ALL;
+ event->loglevel = LTTNG_LOGLEVEL_LOG4J_ALL;
break;
case LTTNG_DOMAIN_PYTHON:
- event.loglevel = LTTNG_LOGLEVEL_PYTHON_DEBUG;
+ event->loglevel = LTTNG_LOGLEVEL_PYTHON_DEBUG;
break;
case LTTNG_DOMAIN_UST:
case LTTNG_DOMAIN_KERNEL:
- event.loglevel = LTTNG_LOGLEVEL_DEBUG;
+ event->loglevel = LTTNG_LOGLEVEL_DEBUG;
break;
default:
assert(0);
goto end;
}
- ret = lttng_strncpy(event.name,
+ ret = lttng_strncpy(event->name,
(const char *) content,
LTTNG_SYMBOL_NAME_LEN);
if (ret == -1) {
goto end;
}
- ret = parse_bool(content, &event.enabled);
+ ret = parse_bool(content, &event->enabled);
free(content);
if (ret) {
ret = -LTTNG_ERR_LOAD_INVALID_CONFIG;
goto end;
}
- event.type = ret;
+ event->type = ret;
} else if (!strcmp((const char *) node->name,
config_element_loglevel_type)) {
xmlChar *content = xmlNodeGetContent(node);
goto end;
}
- event.loglevel_type = ret;
+ event->loglevel_type = ret;
} else if (!strcmp((const char *) node->name,
config_element_loglevel)) {
xmlChar *content;
goto end;
}
- event.loglevel = loglevel;
+ event->loglevel = loglevel;
} else if (!strcmp((const char *) node->name,
config_element_filter)) {
xmlChar *content =
exclusion_index++;
}
- event.exclusion = 1;
+ event->exclusion = 1;
} else if (!strcmp((const char *) node->name,
config_element_attributes)) {
xmlNodePtr attribute_node = xmlFirstElementChild(node);
goto end;
}
- if (!strcmp((const char *) node->name,
+ if (!strcmp((const char *) attribute_node->name,
config_element_probe_attributes)) {
xmlNodePtr probe_attribute_node;
probe_attribute_node)) {
ret = process_probe_attribute_node(probe_attribute_node,
- &event.attr.probe);
+ &event->attr.probe);
if (ret) {
goto end;
}
}
- } else {
+ } else if (!strcmp((const char *) attribute_node->name,
+ config_element_function_attributes)) {
size_t sym_len;
xmlChar *content;
xmlNodePtr symbol_node = xmlFirstElementChild(attribute_node);
}
ret = lttng_strncpy(
- event.attr.ftrace.symbol_name,
+ event->attr.ftrace.symbol_name,
(char *) content, sym_len);
if (ret == -1) {
ret = -LTTNG_ERR_LOAD_INVALID_CONFIG;
goto end;
}
free(content);
+ } else if (!strcmp((const char *) attribute_node->name,
+ config_element_userspace_probe_tracepoint_attributes)) {
+ struct lttng_userspace_probe_location *location;
+
+ location = process_userspace_probe_tracepoint_attribute_node(attribute_node);
+ if (!location) {
+ WARN("Error processing userspace probe tracepoint attribute");
+ ret = -LTTNG_ERR_LOAD_INVALID_CONFIG;
+ goto end;
+ }
+ ret = lttng_event_set_userspace_probe_location(
+ event, location);
+ if (ret) {
+ WARN("Error setting userspace probe location field");
+ lttng_userspace_probe_location_destroy(
+ location);
+ ret = -LTTNG_ERR_LOAD_INVALID_CONFIG;
+ goto end;
+ }
+ } else if (!strcmp((const char *) attribute_node->name,
+ config_element_userspace_probe_function_attributes)) {
+ struct lttng_userspace_probe_location *location;
+
+ location =
+ process_userspace_probe_function_attribute_node(
+ attribute_node);
+ if (!location) {
+ WARN("Error processing userspace probe function attribute");
+ ret = -LTTNG_ERR_LOAD_INVALID_CONFIG;
+ goto end;
+ }
+
+ ret = lttng_event_set_userspace_probe_location(
+ event, location);
+ if (ret) {
+ WARN("Error setting userspace probe location field");
+ lttng_userspace_probe_location_destroy(
+ location);
+ ret = -LTTNG_ERR_LOAD_INVALID_CONFIG;
+ goto end;
+ }
+ } else {
+ /* Unknown event attribute. */
+ ret = -LTTNG_ERR_LOAD_INVALID_CONFIG;
+ goto end;
}
}
}
- if ((event.enabled && phase == ENABLE) || phase == CREATION) {
- ret = lttng_enable_event_with_exclusions(handle, &event, channel_name,
+ if ((event->enabled && phase == ENABLE) || phase == CREATION) {
+ ret = lttng_enable_event_with_exclusions(handle, event, channel_name,
filter_expression, exclusion_count, exclusions);
if (ret < 0) {
- WARN("Enabling event (name:%s) on load failed.", event.name);
+ WARN("Enabling event (name:%s) on load failed.", event->name);
ret = -LTTNG_ERR_LOAD_INVALID_CONFIG;
goto end;
}
free(exclusions[i]);
}
+ lttng_event_destroy(event);
free(exclusions);
free(filter_expression);
return ret;
}
if (!path) {
- char *home_path;
+ const char *home_path;
const char *sys_path;
/* Try home path */
projects / lttng-tools.git / blobdiff