# HG changeset patch
# User Maxim Dounin <mdounin@mdounin.ru>
# Date 1334654038 0
# Node ID 4be36d5e78aea7d7b9c7dd26fa10ea64ace28490
# Parent  089cc5154c1e75a96d17dbef65a4edd98a23ecce
Fixed ngx_readv_chain() to honor IOV_MAX (ticket #14).

Not using full chain passed is ok as consumers are expected to check
event's ready flag to determine if another call is needed, not the
returned size.

diff --git a/src/os/unix/ngx_readv_chain.c b/src/os/unix/ngx_readv_chain.c
--- a/src/os/unix/ngx_readv_chain.c
+++ b/src/os/unix/ngx_readv_chain.c
@@ -71,6 +71,10 @@ ngx_readv_chain(ngx_connection_t *c, ngx
             iov->iov_len += chain->buf->end - chain->buf->last;
 
         } else {
+            if (vec.nelts >= IOV_MAX) {
+                break;
+            }
+
             iov = ngx_array_push(&vec);
             if (iov == NULL) {
                 return NGX_ERROR;
@@ -195,6 +199,10 @@ ngx_readv_chain(ngx_connection_t *c, ngx
             iov->iov_len += chain->buf->end - chain->buf->last;
 
         } else {
+            if (vec.nelts >= IOV_MAX) {
+                break;
+            }
+
             iov = ngx_array_push(&vec);
             if (iov == NULL) {
                 return NGX_ERROR;