new file mode 100644
--- /dev/null
+++ b/src/os/unix/ngx_sendfile.c
@@ -0,0 +1,65 @@
+
+#include <ngx_config.h>
+#include <ngx_types.h>
+#include <ngx_errno.h>
+#include <ngx_log.h>
+#include <ngx_sendv.h>
+#include <ngx_sendfile.h>
+
+/*
+  TODO:
+    FreeBSD:
+       check sent if errno == EINTR then should return right sent.
+*/
+
+/*
+  returns
+      0 done
+     -1 error
+*/
+
+#if (HAVE_FREEBSD_SENDFILE)
+
+int ngx_sendfile(ngx_socket_t s,
+                 ngx_iovec_t *headers, int hdr_cnt,
+                 ngx_file_t fd, off_t offset, size_t nbytes,
+                 ngx_iovec_t *trailers, int trl_cnt,
+                 off_t *sent,
+                 ngx_log_t *log)
+{
+    int             rc, i;
+    ngx_err_t       err;
+    struct sf_hdtr  hdtr;
+
+    hdtr.headers = headers;
+    hdtr.hdr_cnt = hdr_cnt;
+    hdtr.trailers = trailers;
+    hdtr.trl_cnt = trl_cnt;
+
+#if (HAVE_FREEBSD_SENDFILE_NBYTES_BUG)
+    for (i = 0; i < hdr_cnt; i++)
+        nbytes += headers[i].iov_len;
+#endif
+
+    rc = sendfile(fd, s, offset, nbytes, &hdtr, sent, 0);
+
+    if (rc == -1) {
+        err = ngx_socket_errno;
+        if (err != NGX_EAGAIN && err != NGX_EINTR) {
+            ngx_log_error(NGX_LOG_ERR, log, err,
+                         "ngx_sendfile: sendfile failed");
+            return -1;
+
+        } else {
+            ngx_log_error(NGX_LOG_INFO, log, err,
+                         "ngx_sendfile: sendfile sent only %qd bytes", *sent);
+        }
+    }
+
+    ngx_log_debug(log, "ngx_sendfile: %d, @%qd %d:%qd" _
+                  rc _ offset _ nbytes _ *sent);
+
+    return 0;
+}
+
+#endif