+static enum lttng_kernel_tracker_type get_kernel_tracker_type(
+ enum lttng_process_attr process_attr)
+{
+ switch (process_attr) {
+ case LTTNG_PROCESS_ATTR_PROCESS_ID:
+ return LTTNG_KERNEL_TRACKER_PID;
+ case LTTNG_PROCESS_ATTR_VIRTUAL_PROCESS_ID:
+ return LTTNG_KERNEL_TRACKER_VPID;
+ case LTTNG_PROCESS_ATTR_USER_ID:
+ return LTTNG_KERNEL_TRACKER_UID;
+ case LTTNG_PROCESS_ATTR_VIRTUAL_USER_ID:
+ return LTTNG_KERNEL_TRACKER_VUID;
+ case LTTNG_PROCESS_ATTR_GROUP_ID:
+ return LTTNG_KERNEL_TRACKER_GID;
+ case LTTNG_PROCESS_ATTR_VIRTUAL_GROUP_ID:
+ return LTTNG_KERNEL_TRACKER_VGID;
+ default:
+ return LTTNG_KERNEL_TRACKER_UNKNOWN;
+ }
+}
+
+int kernctl_track_id(int fd, enum lttng_process_attr process_attr, int id)
+{
+ struct lttng_kernel_tracker_args args;
+
+ args.id = id;
+ args.type = get_kernel_tracker_type(process_attr);
+ if (args.type == LTTNG_KERNEL_TRACKER_UNKNOWN) {
+ errno = EINVAL;
+ return -1;
+ }
+ return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_SESSION_TRACK_ID, &args);
+}
+
+int kernctl_untrack_id(int fd, enum lttng_process_attr process_attr, int id)
+{
+ struct lttng_kernel_tracker_args args;
+
+ args.id = id;
+ args.type = get_kernel_tracker_type(process_attr);
+ if (args.type == LTTNG_KERNEL_TRACKER_UNKNOWN) {
+ errno = EINVAL;
+ return -1;
+ }
+ return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_SESSION_UNTRACK_ID, &args);
+}
+
+int kernctl_list_tracker_ids(int fd, enum lttng_process_attr process_attr)
+{
+ struct lttng_kernel_tracker_args args;
+
+ args.id = -1;
+ args.type = get_kernel_tracker_type(process_attr);
+ if (args.type == LTTNG_KERNEL_TRACKER_UNKNOWN) {
+ errno = EINVAL;
+ return -1;
+ }
+ return LTTNG_IOCTL_NO_CHECK(
+ fd, LTTNG_KERNEL_SESSION_LIST_TRACKER_IDS, &args);
+}
+