/* Socket to session daemon for communication */
static int sessiond_socket;
static char sessiond_sock_path[PATH_MAX];
-static char health_sock_path[PATH_MAX];
/* Variables */
static char *tracing_group;
*
* If yes return 1, else return -1.
*/
-static int check_tracing_group(const char *grp_name)
+LTTNG_HIDDEN
+int lttng_check_tracing_group(void)
{
struct group *grp_tracing; /* no free(). See getgrnam(3) */
gid_t *grp_list;
int grp_list_size, grp_id, i;
int ret = -1;
+ const char *grp_name = tracing_group;
/* Get GID of group 'tracing' */
grp_tracing = getgrnam(grp_name);
if (uid != 0) {
/* Are we in the tracing group ? */
- in_tgroup = check_tracing_group(tracing_group);
+ in_tgroup = lttng_check_tracing_group();
}
if ((uid == 0) || in_tgroup) {
return -ENOSYS;
}
-/*
- * Set health socket path by putting it in the global health_sock_path
- * variable.
- *
- * Returns 0 on success or -ENOMEM.
- */
-static int set_health_socket_path(void)
-{
- uid_t uid;
- const char *home;
- int ret;
-
- uid = getuid();
-
- 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;
- }
-
- /*
- * 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))) {
- return -ENOMEM;
- }
-
- return 0;
-}
-
-/*
- * Check session daemon health for a specific health component.
- *
- * Return 0 if health is OK or else 1 if BAD.
- *
- * Any other negative value is a lttng error code which can be translated with
- * lttng_strerror().
- */
-int lttng_health_check(enum lttng_health_component c)
-{
- int sock, ret;
- struct health_comm_msg msg;
- struct health_comm_reply reply;
-
- /* Connect to the sesssion daemon */
- sock = lttcomm_connect_unix_sock(health_sock_path);
- if (sock < 0) {
- ret = -LTTNG_ERR_NO_SESSIOND;
- goto error;
- }
-
- msg.cmd = HEALTH_CMD_CHECK;
- msg.component = c;
-
- ret = lttcomm_send_unix_sock(sock, (void *)&msg, sizeof(msg));
- if (ret < 0) {
- ret = -LTTNG_ERR_FATAL;
- goto close_error;
- }
-
- ret = lttcomm_recv_unix_sock(sock, (void *)&reply, sizeof(reply));
- if (ret < 0) {
- ret = -LTTNG_ERR_FATAL;
- goto close_error;
- }
-
- ret = reply.ret_code;
-
-close_error:
- {
- int closeret;
-
- closeret = close(sock);
- assert(!closeret);
- }
-
-error:
- return ret;
-}
-
/*
* This is an extension of create session that is ONLY and SHOULD only be used
* by the lttng command line program. It exists to avoid using URI parsing in
{
/* Set default session group */
lttng_set_tracing_group(DEFAULT_TRACING_GROUP);
- /* Set socket for health check */
- if (set_health_socket_path()) {
- abort();
- }
}
/*