LU-12682 llite: fake symlink type of foreign file/dir

[fs/lustre-release.git] / lustre / lov / lov_pack.c

diff --git a/lustre/lov/lov_pack.c b/lustre/lov/lov_pack.c
index c0d5745..b715ec9 100644 (file)
--- a/lustre/lov/lov_pack.c
+++ b/lustre/lov/lov_pack.c
@@ -166,8 +166,14 @@ static ssize_t lov_lsm_pack_foreign(const struct lov_stripe_md *lsm, void *buf,
        if (buf_size == 0)
                RETURN(lfm_size);
 
-       if (buf_size < lfm_size)
+       /* if buffer too small return ERANGE but copy the size the
+        * caller has requested anyway. This may be useful to get
+        * only the header without the need to alloc the full size
+        */
+       if (buf_size < lfm_size) {
+               memcpy(lfm, lsm_foreign(lsm), buf_size);
                RETURN(-ERANGE);
+       }
 
        /* full foreign LOV is already avail in its cache
         * no need to translate format fields to little-endian