MFH: Fix for Bug #21815

diff --git a/main/streams.c b/main/streams.c
index c30240d4bed254e04b901ecff54a05def381932d..6e5428a41ff9a455863a71ad47db2f9893ae5f74 100755 (executable)
--- a/main/streams.c
+++ b/main/streams.c
@@ -1023,6 +1023,7 @@ PHPAPI size_t _php_stream_passthru(php_stream * stream STREAMS_DC TSRMLS_DC)
 #ifdef HAVE_MMAP
        if (!php_stream_is(stream, PHP_STREAM_IS_SOCKET)
                        && stream->filterhead == NULL
+                       && php_stream_tell(stream) == 0
                        && SUCCESS == php_stream_cast(stream, PHP_STREAM_AS_FD, (void*)&fd, 0))
        {
                struct stat sbuf;