LU-6602 update: split update llog record

[fs/lustre-release.git] / lustre / llite / dir.c

diff --git a/lustre/llite/dir.c b/lustre/llite/dir.c
index ef46098..9c90098 100644 (file)
--- a/lustre/llite/dir.c
+++ b/lustre/llite/dir.c
@@ -1256,12 +1256,14 @@ lmv_out_free:
                int                     mdt_index;
                int                     lum_size;
                int                     stripe_count;
+               int                     max_stripe_count;
                int                     i;
                int                     rc;
 
                if (copy_from_user(&lum, ulmv, sizeof(*ulmv)))
                        RETURN(-EFAULT);
 
+               max_stripe_count = lum.lum_stripe_count;
                /* lum_magic will indicate which stripe the ioctl will like
                 * to get, LMV_MAGIC_V1 is for normal LMV stripe, LMV_USER_MAGIC
                 * is for default LMV stripe */
@@ -1292,6 +1294,13 @@ lmv_out_free:
                }
 
                stripe_count = lmv_mds_md_stripe_count_get(lmm);
+               if (max_stripe_count < stripe_count) {
+                       lum.lum_stripe_count = stripe_count;
+                       if (copy_to_user(ulmv, &lum, sizeof(lum)))
+                               GOTO(finish_req, rc = -EFAULT);
+                       GOTO(finish_req, rc = -E2BIG);
+               }
+
                lum_size = lmv_user_md_size(stripe_count, LMV_MAGIC_V1);
                OBD_ALLOC(tmp, lum_size);
                if (tmp == NULL)