Correctly calculate the offset for read&x

[metze/samba/wip.git] / source3 / smbd / process.c

diff --git a/source3/smbd/process.c b/source3/smbd/process.c
index 3547bfcc3a78487e01f090448acbacb16e32b2d6..1701cd33da68b658943c97a85da192c6d93c7ddc 100644 (file)
--- a/source3/smbd/process.c
+++ b/source3/smbd/process.c
@@ -1822,6 +1822,25 @@ void chain_reply(struct smb_request *req)
 
 #else
 
+/*
+ * How many bytes have we already accumulated up to the current wct field
+ * offset?
+ */
+
+size_t req_wct_ofs(struct smb_request *req)
+{
+       size_t buf_size;
+
+       if (req->chain_outbuf == NULL) {
+               return smb_wct - 4;
+       }
+       buf_size = talloc_get_size(req->chain_outbuf);
+       if ((buf_size % 4) != 0) {
+               buf_size += (4 - (buf_size % 4));
+       }
+       return buf_size - 4;
+}
+
 /*
  * Hack around reply_nterror & friends not being aware of chained requests,
  * generating illegal (i.e. wct==0) chain replies.