libcephfs: document ERANGE rv for get_file_pool_name

Signed-off-by: Noah Watkins <noahwatkins@gmail.com>

diff --git a/src/include/cephfs/libcephfs.h b/src/include/cephfs/libcephfs.h
index 63e9233d9da2293034ee0951136e1560f18c31c2..7b04cce4270934e363c4bb4f90031a59cd9fe94e 100644 (file)
--- a/src/include/cephfs/libcephfs.h
+++ b/src/include/cephfs/libcephfs.h
@@ -851,7 +851,7 @@ int ceph_get_file_pool(struct ceph_mount_info *cmount, int fh);
  * @param fh the open file descriptor referring to the file
  * @param buf buffer to store the name in
  * @param buflen size of the buffer
- * @returns length in bytes of the pool name
+ * @returns length in bytes of the pool name, or -ERANGE if the buffer is not large enough.
  */
 int ceph_get_file_pool_name(struct ceph_mount_info *cmount, int fh, char *buf, size_t buflen);