#include <common/uri.h>
#include <common/utils.h>
#include <lttng/lttng.h>
+#include <lttng/health-internal.h>
#include "filter/filter-ast.h"
#include "filter/filter-parser.h"
* Set health socket path by putting it in the global health_sock_path
* variable.
*
- * Returns 0 on success or assert(0) on ENOMEM.
+ * Returns 0 on success or -ENOMEM.
*/
static int set_health_socket_path(void)
{
- int in_tgroup = 0; /* In tracing group */
uid_t uid;
const char *home;
+ int ret;
uid = getuid();
- if (uid != 0) {
- /* Are we in the tracing group ? */
- in_tgroup = check_tracing_group(tracing_group);
- }
-
- if ((uid == 0) || in_tgroup) {
+ if (uid == 0 || check_tracing_group(tracing_group)) {
lttng_ctl_copy_string(health_sock_path,
DEFAULT_GLOBAL_HEALTH_UNIX_SOCK, sizeof(health_sock_path));
+ return 0;
}
- if (uid != 0) {
- int ret;
-
- /*
- * With GNU C < 2.1, snprintf returns -1 if the target buffer is too small;
- * With GNU C >= 2.1, snprintf returns the required size (excluding closing null)
- */
- home = utils_get_home_dir();
- if (home == NULL) {
- /* Fallback in /tmp .. */
- home = "/tmp";
- }
+ /*
+ * With GNU C < 2.1, snprintf returns -1 if the target buffer
+ * is too small; With GNU C >= 2.1, snprintf returns the
+ * required size (excluding closing null).
+ */
+ home = utils_get_home_dir();
+ if (home == NULL) {
+ /* Fallback in /tmp */
+ home = "/tmp";
+ }
- ret = snprintf(health_sock_path, sizeof(health_sock_path),
- DEFAULT_HOME_HEALTH_UNIX_SOCK, home);
- if ((ret < 0) || (ret >= sizeof(health_sock_path))) {
- /* ENOMEM at this point... just kill the control lib. */
- assert(0);
- }
+ ret = snprintf(health_sock_path, sizeof(health_sock_path),
+ DEFAULT_HOME_HEALTH_UNIX_SOCK, home);
+ if ((ret < 0) || (ret >= sizeof(health_sock_path))) {
+ return -ENOMEM;
}
return 0;
int lttng_health_check(enum lttng_health_component c)
{
int sock, ret;
- struct lttcomm_health_msg msg;
- struct lttcomm_health_data reply;
+ struct health_comm_msg msg;
+ struct health_comm_reply reply;
/* Connect to the sesssion daemon */
sock = lttcomm_connect_unix_sock(health_sock_path);
goto error;
}
- msg.cmd = LTTNG_HEALTH_CHECK;
+ msg.cmd = HEALTH_CMD_CHECK;
msg.component = c;
ret = lttcomm_send_unix_sock(sock, (void *)&msg, sizeof(msg));
return ret;
}
+/*
+ * Create a session exclusively used for live.
+ *
+ * Returns LTTNG_OK on success or a negative error code.
+ */
+int lttng_create_session_live(const char *name, const char *url,
+ unsigned int timer_interval)
+{
+ int ret;
+ ssize_t size;
+ struct lttcomm_session_msg lsm;
+ struct lttng_uri *uris = NULL;
+
+ if (name == NULL) {
+ return -LTTNG_ERR_INVALID;
+ }
+
+ memset(&lsm, 0, sizeof(lsm));
+
+ lsm.cmd_type = LTTNG_CREATE_SESSION_LIVE;
+ lttng_ctl_copy_string(lsm.session.name, name, sizeof(lsm.session.name));
+
+ size = uri_parse_str_urls(url, NULL, &uris);
+ if (size < 0) {
+ ret = -LTTNG_ERR_INVALID;
+ goto end;
+ }
+
+ /* file:// is not accepted for live session. */
+ if (uris[0].dtype == LTTNG_DST_PATH) {
+ ret = -LTTNG_ERR_INVALID;
+ goto end;
+ }
+
+ lsm.u.session_live.nb_uri = size;
+ lsm.u.session_live.timer_interval = timer_interval;
+
+ ret = lttng_ctl_ask_sessiond_varlen(&lsm, uris,
+ sizeof(struct lttng_uri) * size, NULL);
+
+end:
+ free(uris);
+ return ret;
+}
+
/*
* lib constructor
*/
/* Set default session group */
lttng_set_tracing_group(DEFAULT_TRACING_GROUP);
/* Set socket for health check */
- (void) set_health_socket_path();
+ if (set_health_socket_path()) {
+ abort();
+ }
}
/*