+ return LTTNG_IOCTL_NO_CHECK(fd, LTTNG_KERNEL_CHANNEL, &channel);
+}
+
+int kernctl_syscall_mask(int fd, char **syscall_mask, uint32_t *nr_bits)
+{
+ struct lttng_kernel_syscall_mask kmask_len, *kmask = NULL;
+ size_t array_alloc_len;
+ char *new_mask;
+ int ret = 0;
+
+ if (!syscall_mask) {
+ ret = -1;
+ goto end;
+ }
+
+ if (!nr_bits) {
+ ret = -1;
+ goto end;
+ }
+
+ kmask_len.len = 0;
+ ret = LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_SYSCALL_MASK, &kmask_len);
+ if (ret) {
+ goto end;
+ }
+
+ array_alloc_len = ALIGN(kmask_len.len, 8) >> 3;
+
+ kmask = zmalloc(sizeof(*kmask) + array_alloc_len);
+ if (!kmask) {
+ ret = -1;
+ goto end;
+ }
+
+ kmask->len = kmask_len.len;
+ ret = LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_SYSCALL_MASK, kmask);
+ if (ret) {
+ goto end;
+ }
+
+ new_mask = realloc(*syscall_mask, array_alloc_len);
+ if (!new_mask) {
+ ret = -1;
+ goto end;
+ }
+ memcpy(new_mask, kmask->mask, array_alloc_len);
+ *syscall_mask = new_mask;
+ *nr_bits = kmask->len;
+
+end:
+ free(kmask);
+ return ret;
+}
+
+int kernctl_track_pid(int fd, int pid)
+{
+ return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_SESSION_TRACK_PID, pid);
+}
+
+int kernctl_untrack_pid(int fd, int pid)
+{
+ return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_SESSION_UNTRACK_PID, pid);
+}
+
+int kernctl_list_tracker_pids(int fd)
+{
+ return LTTNG_IOCTL_NO_CHECK(fd, LTTNG_KERNEL_SESSION_LIST_TRACKER_PIDS);
+}
+
+static enum lttng_kernel_tracker_type get_kernel_tracker_type(
+ enum lttng_tracker_type type)
+{
+ switch (type) {
+ case LTTNG_TRACKER_PID:
+ return LTTNG_KERNEL_TRACKER_PID;
+ case LTTNG_TRACKER_VPID:
+ return LTTNG_KERNEL_TRACKER_VPID;
+ case LTTNG_TRACKER_UID:
+ return LTTNG_KERNEL_TRACKER_UID;
+ case LTTNG_TRACKER_VUID:
+ return LTTNG_KERNEL_TRACKER_VUID;
+ case LTTNG_TRACKER_GID:
+ return LTTNG_KERNEL_TRACKER_GID;
+ case LTTNG_TRACKER_VGID:
+ return LTTNG_KERNEL_TRACKER_VGID;
+ default:
+ return LTTNG_KERNEL_TRACKER_UNKNOWN;
+ }
+}
+
+int kernctl_track_id(int fd, enum lttng_tracker_type tracker_type, int id)
+{
+ struct lttng_kernel_tracker_args args;
+
+ args.id = id;
+ args.type = get_kernel_tracker_type(tracker_type);
+ 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_tracker_type tracker_type, int id)
+{
+ struct lttng_kernel_tracker_args args;
+
+ args.id = id;
+ args.type = get_kernel_tracker_type(tracker_type);
+ 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_tracker_type tracker_type)
+{
+ struct lttng_kernel_tracker_args args;
+
+ args.id = -1;
+ args.type = get_kernel_tracker_type(tracker_type);
+ if (args.type == LTTNG_KERNEL_TRACKER_UNKNOWN) {
+ errno = EINVAL;
+ return -1;
+ }
+ return LTTNG_IOCTL_NO_CHECK(
+ fd, LTTNG_KERNEL_SESSION_LIST_TRACKER_IDS, &args);
+}
+
+int kernctl_session_regenerate_metadata(int fd)
+{
+ return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_SESSION_METADATA_REGEN);
+}
+
+int kernctl_session_regenerate_statedump(int fd)
+{
+ return LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_SESSION_STATEDUMP);
+}
+
+int kernctl_session_set_name(int fd, const char *name)
+{
+ int ret;
+ struct lttng_kernel_session_name session_name;
+
+ ret = lttng_strncpy(session_name.name, name, sizeof(session_name.name));
+ if (ret) {
+ goto end;
+ }
+
+ ret = LTTNG_IOCTL_CHECK(
+ fd, LTTNG_KERNEL_SESSION_SET_NAME, &session_name);
+end:
+ return ret;
+}
+
+int kernctl_session_set_creation_time(int fd, time_t time)
+{
+ int ret;
+ struct lttng_kernel_session_creation_time creation_time;
+
+ ret = time_to_iso8601_str(time, creation_time.iso8601,
+ sizeof(creation_time.iso8601));
+ if (ret) {
+ goto end;
+ }
+
+ ret = LTTNG_IOCTL_CHECK(fd, LTTNG_KERNEL_SESSION_SET_CREATION_TIME,
+ &creation_time);
+end:
+ return ret;