*/
#define _GNU_SOURCE
+#define _LGPL_SOURCE
#include <assert.h>
#include <ctype.h>
#include <stdio.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
+#include <stdbool.h>
#include <common/defaults.h>
#include <common/error.h>
#include <common/macros.h>
#include <common/utils.h>
+#include <common/compat/getenv.h>
#include <lttng/lttng-error.h>
#include <libxml/parser.h>
#include <libxml/valid.h>
const char * const config_element_control_uri = "control_uri";
const char * const config_element_data_uri = "data_uri";
const char * const config_element_max_size = "max_size";
+const char * const config_element_pid = "pid";
+const char * const config_element_pids = "pids";
+const char * const config_element_shared_memory_path = "shared_memory_path";
+const char * const config_element_pid_tracker = "pid_tracker";
+const char * const config_element_trackers = "trackers";
+const char * const config_element_targets = "targets";
+const char * const config_element_target_pid = "pid_target";
const char * const config_domain_type_kernel = "KERNEL";
const char * const config_domain_type_ust = "UST";
const char * const config_domain_type_jul = "JUL";
+const char * const config_domain_type_log4j = "LOG4J";
+const char * const config_domain_type_python = "PYTHON";
const char * const config_buffer_type_per_pid = "PER_PID";
const char * const config_buffer_type_per_uid = "PER_UID";
const char * const config_event_context_pthread_id = "PTHREAD_ID";
const char * const config_event_context_hostname = "HOSTNAME";
const char * const config_event_context_ip = "IP";
+const char * const config_event_context_perf_thread_counter = "PERF_THREAD_COUNTER";
+
+enum process_event_node_phase {
+ CREATION = 0,
+ ENABLE = 1,
+};
struct consumer_output {
int enabled;
in_len = strlen(in_str);
/*
- * Add 1 byte for the NULL terminted character. The factor 2 here is
- * because UTF-8 can be on two bytes so this fits the worst case for each
- * bytes.
+ * Add 1 byte for the NULL terminted character. The factor 4 here is
+ * used because UTF-8 characters can take up to 4 bytes.
*/
- out_len = (in_len * 2) + 1;
+ out_len = (in_len * 4) + 1;
out_str = xmlMalloc(out_len);
if (!out_str) {
goto end;
}
LTTNG_HIDDEN
-struct config_writer *config_writer_create(int fd_output)
+struct config_writer *config_writer_create(int fd_output, int indent)
{
int ret;
struct config_writer *writer;
ret = xmlTextWriterSetIndentString(writer->writer,
BAD_CAST config_xml_indent_string);
- if (ret) {
+ if (ret) {
goto error_destroy;
}
- ret = xmlTextWriterSetIndent(writer->writer, 1);
- if (ret) {
+ ret = xmlTextWriterSetIndent(writer->writer, indent);
+ if (ret) {
goto error_destroy;
}
char *get_session_config_xsd_path()
{
char *xsd_path;
- const char *base_path = getenv(DEFAULT_SESSION_CONFIG_XSD_PATH_ENV);
+ const char *base_path = lttng_secure_getenv(DEFAULT_SESSION_CONFIG_XSD_PATH_ENV);
size_t base_path_len;
size_t max_path_len;
ret = LTTNG_DOMAIN_UST;
} else if (!strcmp((char *) domain, config_domain_type_jul)) {
ret = LTTNG_DOMAIN_JUL;
+ } else if (!strcmp((char *) domain, config_domain_type_log4j)) {
+ ret = LTTNG_DOMAIN_LOG4J;
+ } else if (!strcmp((char *) domain, config_domain_type_python)) {
+ ret = LTTNG_DOMAIN_PYTHON;
} else {
goto error;
}
}
static
-int create_session_net_output(const char *name, struct lttng_domain *domain,
- const char *control_uri, const char *data_uri)
+int create_session_net_output(const char *name, const char *control_uri,
+ const char *data_uri)
{
int ret;
struct lttng_handle *handle;
const char *uri = NULL;
assert(name);
- assert(domain);
- handle = lttng_create_handle(name, domain);
+ handle = lttng_create_handle(name, NULL);
if (!handle) {
ret = -LTTNG_ERR_NOMEM;
goto end;
struct lttng_domain *kernel_domain,
struct lttng_domain *ust_domain,
struct lttng_domain *jul_domain,
+ struct lttng_domain *log4j_domain,
xmlNodePtr output_node,
uint64_t live_timer_interval)
{
}
if (output.control_uri || output.data_uri) {
- int i;
- struct lttng_domain *domain;
- struct lttng_domain *domains[] =
- { kernel_domain, ust_domain, jul_domain };
-
/* network destination */
if (live_timer_interval && live_timer_interval != UINT64_MAX) {
/*
goto end;
}
- for (i = 0; i < (sizeof(domains) / sizeof(domains[0])); i++) {
- domain = domains[i];
- if (!domain) {
- continue;
- }
-
- ret = create_session_net_output(name, domain, output.control_uri,
- output.data_uri);
- if (ret) {
- goto end;
- }
+ ret = create_session_net_output(name, output.control_uri,
+ output.data_uri);
+ if (ret) {
+ goto end;
}
+
} else {
/* either local output or no output */
ret = lttng_create_session(name, output.path);
static
int process_event_node(xmlNodePtr event_node, struct lttng_handle *handle,
- const char *channel_name)
+ const char *channel_name, const enum process_event_node_phase phase)
{
- int ret, i;
+ int ret = 0, i;
xmlNodePtr node;
struct lttng_event event;
char **exclusions = NULL;
memset(&event, 0, sizeof(event));
+ /* Initialize default log level which varies by domain */
+ switch (handle->domain.type)
+ {
+ case LTTNG_DOMAIN_JUL:
+ event.loglevel = LTTNG_LOGLEVEL_JUL_ALL;
+ break;
+ case LTTNG_DOMAIN_LOG4J:
+ event.loglevel = LTTNG_LOGLEVEL_LOG4J_ALL;
+ break;
+ case LTTNG_DOMAIN_PYTHON:
+ event.loglevel = LTTNG_LOGLEVEL_PYTHON_DEBUG;
+ break;
+ case LTTNG_DOMAIN_UST:
+ case LTTNG_DOMAIN_KERNEL:
+ event.loglevel = LTTNG_LOGLEVEL_DEBUG;
+ break;
+ default:
+ assert(0);
+ }
+
for (node = xmlFirstElementChild(event_node); node;
node = xmlNextElementSibling(node)) {
if (!strcmp((const char *) node->name, config_element_name)) {
goto end;
}
+ free(filter_expression);
filter_expression = strdup((char *) content);
free(content);
if (!filter_expression) {
}
}
- ret = lttng_enable_event_with_exclusions(handle, &event, channel_name,
- filter_expression, exclusion_count, exclusions);
+ 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);
+ ret = -LTTNG_ERR_LOAD_INVALID_CONFIG;
+ goto end;
+ }
+ }
end:
for (i = 0; i < exclusion_count; i++) {
free(exclusions[i]);
const char *channel_name)
{
int ret = 0;
+ struct lttng_event event;
xmlNodePtr node;
assert(events_node);
for (node = xmlFirstElementChild(events_node); node;
node = xmlNextElementSibling(node)) {
- ret = process_event_node(node, handle, channel_name);
+ ret = process_event_node(node, handle, channel_name, CREATION);
if (ret) {
goto end;
}
}
+
+ /*
+ * Disable all events to enable only the necessary events.
+ * Limitations regarding lttng_disable_events and tuple descriptor
+ * force this approach.
+ */
+ memset(&event, 0, sizeof(event));
+ event.loglevel = -1;
+ event.type = LTTNG_EVENT_ALL;
+ ret = lttng_disable_event_ext(handle, &event, channel_name, NULL);
+ if (ret) {
+ goto end;
+ }
+
+ for (node = xmlFirstElementChild(events_node); node;
+ node = xmlNextElementSibling(node)) {
+ ret = process_event_node(node, handle, channel_name, ENABLE);
+ if (ret) {
+ goto end;
+ }
+ }
+
end:
return ret;
}
xmlNodePtr perf_attr_node;
/* perf */
- context.ctx = LTTNG_EVENT_CONTEXT_PERF_COUNTER;
+ context.ctx = handle->domain.type == LTTNG_DOMAIN_KERNEL ?
+ LTTNG_EVENT_CONTEXT_PERF_CPU_COUNTER :
+ LTTNG_EVENT_CONTEXT_PERF_THREAD_COUNTER;
for (perf_attr_node = xmlFirstElementChild(context_child_node);
perf_attr_node; perf_attr_node =
xmlNextElementSibling(perf_attr_node)) {
return ret;
}
+static
+int process_pid_tracker_node(xmlNodePtr pid_tracker_node,
+ struct lttng_handle *handle)
+{
+ int ret, child;
+ xmlNodePtr targets_node = NULL;
+ xmlNodePtr node;
+
+ assert(handle);
+ assert(pid_tracker_node);
+ /* get the targets node */
+ for (node = xmlFirstElementChild(pid_tracker_node); node;
+ node = xmlNextElementSibling(node)) {
+ if (!strcmp((const char *) node->name,
+ config_element_targets)) {
+ targets_node = node;
+ break;
+ }
+ }
+
+ if (!targets_node) {
+ ret = LTTNG_ERR_INVALID;
+ goto end;
+ }
+
+ /* Go through all pid_target node */
+ child = xmlChildElementCount(targets_node);
+ if (child == 0) {
+ /* The session is explicitly set to target nothing. */
+ ret = lttng_untrack_pid(handle, -1);
+ if (ret) {
+ goto end;
+ }
+ }
+ for (node = xmlFirstElementChild(targets_node); node;
+ node = xmlNextElementSibling(node)) {
+ xmlNodePtr pid_target_node = node;
+
+ /* get pid node and track it */
+ for (node = xmlFirstElementChild(pid_target_node); node;
+ node = xmlNextElementSibling(node)) {
+ if (!strcmp((const char *) node->name,
+ config_element_pid)) {
+ int64_t pid;
+ xmlChar *content = NULL;
+
+ content = xmlNodeGetContent(node);
+ if (!content) {
+ ret = LTTNG_ERR_LOAD_INVALID_CONFIG;
+ goto end;
+ }
+
+ ret = parse_int(content, &pid);
+ free(content);
+ if (ret) {
+ ret = LTTNG_ERR_LOAD_INVALID_CONFIG;
+ goto end;
+ }
+
+ ret = lttng_track_pid(handle, (int) pid);
+ if (ret) {
+ goto end;
+ }
+ }
+ }
+ node = pid_target_node;
+ }
+
+end:
+ return ret;
+}
+
+
static
int process_domain_node(xmlNodePtr domain_node, const char *session_name)
{
struct lttng_domain domain = { 0 };
struct lttng_handle *handle = NULL;
xmlNodePtr channels_node = NULL;
+ xmlNodePtr trackers_node = NULL;
+ xmlNodePtr pid_tracker_node = NULL;
xmlNodePtr node;
assert(session_name);
goto end;
}
}
+
+ /* get the trackers node */
+ for (node = xmlFirstElementChild(domain_node); node;
+ node = xmlNextElementSibling(node)) {
+ if (!strcmp((const char *) node->name,
+ config_element_trackers)) {
+ trackers_node = node;
+ break;
+ }
+ }
+
+ if (!trackers_node) {
+ goto end;
+ }
+
+ for (node = xmlFirstElementChild(trackers_node); node;
+ node = xmlNextElementSibling(node)) {
+ if (!strcmp((const char *)node->name,config_element_pid_tracker)) {
+ pid_tracker_node = node;
+ ret = process_pid_tracker_node(pid_tracker_node, handle);
+ if (ret) {
+ goto end;
+ }
+ }
+ }
+
+ if (!pid_tracker_node) {
+ lttng_track_pid(handle, -1);
+ }
+
end:
lttng_destroy_handle(handle);
return ret;
{
int ret, started = -1, snapshot_mode = -1;
uint64_t live_timer_interval = UINT64_MAX;
- char *name = NULL;
+ xmlChar *name = NULL;
+ xmlChar *shm_path = NULL;
xmlNodePtr domains_node = NULL;
xmlNodePtr output_node = NULL;
xmlNodePtr node;
struct lttng_domain *kernel_domain = NULL;
struct lttng_domain *ust_domain = NULL;
struct lttng_domain *jul_domain = NULL;
+ struct lttng_domain *log4j_domain = NULL;
+ struct lttng_domain *python_domain = NULL;
for (node = xmlFirstElementChild(session_node); node;
node = xmlNextElementSibling(node)) {
xmlChar *node_content = xmlNodeGetContent(node);
if (!node_content) {
ret = -LTTNG_ERR_NOMEM;
- goto end;
+ goto error;
}
- name = (char *) node_content;
+ name = node_content;
} else if (!domains_node && !strcmp((const char *) node->name,
config_element_domains)) {
/* domains */
xmlChar *node_content = xmlNodeGetContent(node);
if (!node_content) {
ret = -LTTNG_ERR_NOMEM;
- goto end;
+ goto error;
}
ret = parse_bool(node_content, &started);
free(node_content);
if (ret) {
ret = -LTTNG_ERR_LOAD_INVALID_CONFIG;
- goto end;
+ goto error;
}
} else if (!output_node && !strcmp((const char *) node->name,
config_element_output)) {
/* output */
output_node = node;
+ } else if (!shm_path && !strcmp((const char *) node->name,
+ config_element_shared_memory_path)) {
+ /* shared memory path */
+ xmlChar *node_content = xmlNodeGetContent(node);
+ if (!node_content) {
+ ret = -LTTNG_ERR_NOMEM;
+ goto error;
+ }
+
+ shm_path = node_content;
} else {
/* attributes, snapshot_mode or live_timer_interval */
xmlNodePtr attributes_child =
xmlNodeGetContent(attributes_child);
if (!snapshot_mode_content) {
ret = -LTTNG_ERR_NOMEM;
- goto end;
+ goto error;
}
ret = parse_bool(snapshot_mode_content, &snapshot_mode);
free(snapshot_mode_content);
if (ret) {
ret = -LTTNG_ERR_LOAD_INVALID_CONFIG;
- goto end;
+ goto error;
}
} else {
/* live_timer_interval */
xmlNodeGetContent(attributes_child);
if (!timer_interval_content) {
ret = -LTTNG_ERR_NOMEM;
- goto end;
+ goto error;
}
ret = parse_uint(timer_interval_content, &live_timer_interval);
free(timer_interval_content);
if (ret) {
ret = -LTTNG_ERR_LOAD_INVALID_CONFIG;
- goto end;
+ goto error;
}
}
}
if (!name) {
/* Mandatory attribute, as defined in the session XSD */
ret = -LTTNG_ERR_LOAD_INVALID_CONFIG;
- goto end;
+ goto error;
}
- if (session_name && strcmp(name, session_name)) {
+ if (session_name && strcmp((char *) name, session_name)) {
/* This is not the session we are looking for */
- ret = -LTTNG_ERR_LOAD_SESSION_NOENT;
- goto end;
+ ret = -LTTNG_ERR_NO_SESSION;
+ goto error;
}
/* Init domains to create the session handles */
domain = zmalloc(sizeof(*domain));
if (!domain) {
ret = -LTTNG_ERR_NOMEM;
- goto end;
+ goto error;
}
ret = init_domain(node, domain);
}
jul_domain = domain;
break;
+ case LTTNG_DOMAIN_LOG4J:
+ if (log4j_domain) {
+ /* Same domain seen twice, invalid! */
+ goto domain_init_error;
+ }
+ log4j_domain = domain;
+ break;
+ case LTTNG_DOMAIN_PYTHON:
+ if (python_domain) {
+ /* Same domain seen twice, invalid! */
+ goto domain_init_error;
+ }
+ python_domain = domain;
+ break;
default:
WARN("Invalid domain type");
goto domain_init_error;
domain_init_error:
free(domain);
ret = -LTTNG_ERR_LOAD_INVALID_CONFIG;
- goto end;
+ goto error;
}
if (override) {
/* Destroy session if it exists */
- ret = lttng_destroy_session(name);
+ ret = lttng_destroy_session((const char *) name);
if (ret && ret != -LTTNG_ERR_SESS_NOT_FOUND) {
ERR("Failed to destroy existing session.");
- goto end;
+ goto error;
}
}
/* Create session type depending on output type */
if (snapshot_mode && snapshot_mode != -1) {
- ret = create_snapshot_session(name, output_node);
+ ret = create_snapshot_session((const char *) name, output_node);
} else if (live_timer_interval &&
live_timer_interval != UINT64_MAX) {
- ret = create_session(name, kernel_domain, ust_domain, jul_domain,
+ ret = create_session((const char *) name, kernel_domain,
+ ust_domain, jul_domain, log4j_domain,
output_node, live_timer_interval);
} else {
/* regular session */
- ret = create_session(name, kernel_domain, ust_domain, jul_domain,
+ ret = create_session((const char *) name, kernel_domain,
+ ust_domain, jul_domain, log4j_domain,
output_node, UINT64_MAX);
}
-
if (ret) {
- goto end;
+ goto error;
+ }
+
+ if (shm_path) {
+ ret = lttng_set_session_shm_path((const char *) name,
+ (const char *) shm_path);
+ if (ret) {
+ goto error;
+ }
}
for (node = xmlFirstElementChild(domains_node); node;
node = xmlNextElementSibling(node)) {
- ret = process_domain_node(node, name);
+ ret = process_domain_node(node, (const char *) name);
if (ret) {
goto end;
}
}
if (started) {
- ret = lttng_start_tracing(name);
+ ret = lttng_start_tracing((const char *) name);
if (ret) {
goto end;
}
}
+
end:
if (ret < 0) {
- ERR("Failed to load session %s: %s", name, lttng_strerror(ret));
- lttng_destroy_session(name);
+ ERR("Failed to load session %s: %s", (const char *) name,
+ lttng_strerror(ret));
+ lttng_destroy_session((const char *) name);
}
+error:
free(kernel_domain);
free(ust_domain);
free(jul_domain);
- free(name);
+ free(log4j_domain);
+ free(python_domain);
+ xmlFree(name);
+ xmlFree(shm_path);
return ret;
}
+/*
+ * Return 1 if the given path is readable by the current UID or 0 if not.
+ * Return -1 if the path is EPERM.
+ */
+static int validate_file_read_creds(const char *path)
+{
+ int ret;
+
+ assert(path);
+
+ /* Can we read the file. */
+ ret = access(path, R_OK);
+ if (!ret) {
+ goto valid;
+ }
+ if (errno == EACCES) {
+ return -1;
+ } else {
+ /* Invalid. */
+ return 0;
+ }
+valid:
+ return 1;
+}
+
static
int load_session_from_file(const char *path, const char *session_name,
struct session_config_validation_ctx *validation_ctx, int override)
xmlDocPtr doc = NULL;
xmlNodePtr sessions_node;
xmlNodePtr session_node;
- struct stat sb;
assert(path);
assert(validation_ctx);
- ret = stat(path, &sb);
- if (ret) {
- ret = -LTTNG_ERR_LOAD_SESSION_NOENT;
+ ret = validate_file_read_creds(path);
+ if (ret != 1) {
+ if (ret == -1) {
+ ret = -LTTNG_ERR_EPERM;
+ } else {
+ ret = -LTTNG_ERR_LOAD_SESSION_NOENT;
+ }
goto end;
}
return ret;
}
+/* Allocate dirent as recommended by READDIR(3), NOTES on readdir_r */
+static
+struct dirent *alloc_dirent(const char *path)
+{
+ size_t len;
+ long name_max;
+ struct dirent *entry;
+
+ name_max = pathconf(path, _PC_NAME_MAX);
+ if (name_max == -1) {
+ name_max = PATH_MAX;
+ }
+ len = offsetof(struct dirent, d_name) + name_max + 1;
+ entry = zmalloc(len);
+ return entry;
+}
+
static
int load_session_from_path(const char *path, const char *session_name,
struct session_config_validation_ctx *validation_ctx, int override)
goto end;
}
- entry = zmalloc(sizeof(*entry));
+ entry = alloc_dirent(path);
if (!entry) {
ret = -LTTNG_ERR_NOMEM;
goto end;
}
}
- if (!session_found) {
- ret = -LTTNG_ERR_LOAD_SESSION_NOENT;
+ if (session_found && !ret) {
+ ret = 0;
}
return ret;
}
+/*
+ * Validate that the given path's credentials and the current process have the
+ * same UID. If so, return 1 else return 0 if it does NOT match.
+ */
+static int validate_path_creds(const char *path)
+{
+ int ret, uid = getuid();
+ struct stat buf;
+
+ assert(path);
+
+ if (uid == 0) {
+ goto valid;
+ }
+
+ ret = stat(path, &buf);
+ if (ret < 0) {
+ if (errno != ENOENT) {
+ PERROR("stat");
+ }
+ ret = -LTTNG_ERR_INVALID;
+ goto valid;
+ }
+
+ if (buf.st_uid != uid) {
+ goto invalid;
+ }
+
+valid:
+ return 1;
+invalid:
+ return 0;
+}
+
LTTNG_HIDDEN
int config_load_session(const char *path, const char *session_name,
- int override)
+ int override, unsigned int autoload)
{
int ret;
+ bool session_loaded = false;
+ const char *path_ptr = NULL;
struct session_config_validation_ctx validation_ctx = { 0 };
ret = init_session_config_validation_ctx(&validation_ctx);
}
if (!path) {
+ char *home_path;
+ const char *sys_path;
+
/* Try home path */
- char *home_path = utils_get_home_dir();
+ home_path = utils_get_home_dir();
if (home_path) {
- char *path;
+ char path[PATH_MAX];
- ret = asprintf(&path, DEFAULT_SESSION_HOME_CONFIGPATH,
- home_path);
- if (ret < 0) {
- goto end;
- }
+ /*
+ * Try user session configuration path. Ignore error here so we can
+ * continue loading the system wide sessions.
+ */
+ if (autoload) {
+ ret = snprintf(path, sizeof(path),
+ DEFAULT_SESSION_HOME_CONFIGPATH "/"
+ DEFAULT_SESSION_CONFIG_AUTOLOAD, home_path);
+ if (ret < 0) {
+ PERROR("snprintf session autoload home config path");
+ goto end;
+ }
- ret = load_session_from_path(path, session_name,
- &validation_ctx, 0);
- if (!ret || (ret && ret != -LTTNG_ERR_LOAD_SESSION_NOENT)) {
- /* Session found or an error occured */
- free(path);
- goto end;
+ /*
+ * Credentials are only validated for the autoload in order to
+ * avoid any user session daemon to try to load kernel sessions
+ * automatically and failing all the times.
+ */
+ ret = validate_path_creds(path);
+ if (ret) {
+ path_ptr = path;
+ }
+ } else {
+ ret = snprintf(path, sizeof(path),
+ DEFAULT_SESSION_HOME_CONFIGPATH, home_path);
+ if (ret < 0) {
+ PERROR("snprintf session home config path");
+ goto end;
+ }
+ path_ptr = path;
}
+ if (path_ptr) {
+ ret = load_session_from_path(path_ptr, session_name,
+ &validation_ctx, override);
+ if (ret && ret != -LTTNG_ERR_LOAD_SESSION_NOENT) {
+ goto end;
+ }
+ /*
+ * Continue even if the session was found since we have to try
+ * the system wide sessions.
+ */
+ session_loaded = true;
+ }
+ }
- free(path);
+ /* Reset path pointer for the system wide dir. */
+ path_ptr = NULL;
+
+ /* Try system wide configuration directory. */
+ if (autoload) {
+ sys_path = DEFAULT_SESSION_SYSTEM_CONFIGPATH "/"
+ DEFAULT_SESSION_CONFIG_AUTOLOAD;
+ ret = validate_path_creds(sys_path);
+ if (ret) {
+ path_ptr = sys_path;
+ }
+ } else {
+ sys_path = DEFAULT_SESSION_SYSTEM_CONFIGPATH;
+ path_ptr = sys_path;
}
- /* Try system session configuration path */
- ret = load_session_from_path(DEFAULT_SESSION_SYSTEM_CONFIGPATH,
- session_name, &validation_ctx, 0);
- if (!ret || (ret && ret != -LTTNG_ERR_LOAD_SESSION_NOENT)) {
- /* Session found or an error occured */
- goto end;
+ if (path_ptr) {
+ ret = load_session_from_path(path_ptr, session_name,
+ &validation_ctx, override);
+ if (!ret) {
+ session_loaded = true;
+ }
}
} else {
ret = access(path, F_OK);
*/
ret = 0;
}
+
+ if (session_loaded && ret == -LTTNG_ERR_LOAD_SESSION_NOENT) {
+ /* A matching session was found in one of the search paths. */
+ ret = 0;
+ }
return ret;
}
+
+static
+void __attribute__((destructor)) session_config_exit(void)
+{
+ xmlCleanupParser();
+}