NFSv4: Clean up nfs4_decode_dirent

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

1 files changed, 13 insertions, 25 deletions

diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c
index 9bf5e66d11db..4c43e4874c52 100644
--- a/fs/nfs/nfs4xdr.c
+++ b/fs/nfs/nfs4xdr.c
@@ -5803,11 +5803,10 @@ __be32 *nfs4_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry,
         p = xdr_decode_hyper(p, &entry->cookie);
         entry->len = ntohl(*p++);
 
-        p = xdr_inline_decode(xdr, entry->len + 4);
+        p = xdr_inline_decode(xdr, entry->len);
         if (unlikely(!p))
                 goto out_overflow;
         entry->name = (const char *) p;
-        p += XDR_QUADLEN(entry->len);
 
         /*
          * In case the server doesn't return an inode number,
@@ -5817,30 +5816,19 @@ __be32 *nfs4_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry,
         entry->ino = 1;
         entry->fattr->valid = 0;
 
-        len = ntohl(*p++);              /* bitmap length */
-        if (len-- > 0) {
-                p = xdr_inline_decode(xdr, 4);
-                if (unlikely(!p))
-                        goto out_overflow;
-                bitmap[0] = ntohl(*p++);
-                if (len-- > 0) {
-                        p = xdr_inline_decode(xdr, 4);
-                        if (unlikely(!p))
-                                goto out_overflow;
-                        bitmap[1] = ntohl(*p++);
-                        p += len;
-                }
-        }
-        p = xdr_inline_decode(xdr, 4);
-        if (unlikely(!p))
+        if (decode_attr_bitmap(xdr, bitmap) < 0)
+                goto out_overflow;
+
+        if (decode_attr_length(xdr, &len, &p) < 0)
+                goto out_overflow;
+
+        if (decode_getfattr_attrs(xdr, bitmap, entry->fattr, entry->fh, server, 1) < 0)
+                goto out_overflow;
+        if (entry->fattr->valid & NFS_ATTR_FATTR_FILEID)
+                entry->ino = entry->fattr->fileid;
+
+        if (verify_attr_len(xdr, p, len) < 0)
                 goto out_overflow;
-        len = XDR_QUADLEN(ntohl(*p++)); /* attribute buffer length */
-        if (len > 0) {
-                if (decode_getfattr_attrs(xdr, bitmap, entry->fattr, entry->fh, server, 1) < 0)
-                        goto out_overflow;
-                if (entry->fattr->valid & NFS_ATTR_FATTR_FILEID)
-                        entry->ino = entry->fattr->fileid;
-        }
 
         p = xdr_inline_peek(xdr, 8);
         if (p != NULL)