commit aceacd8088e2aca808459219fc4ff715c14d648b
author Maxim Dounin <mdounin@mdounin.ru> Wed Aug 01 02:11:58 2018 +0300
committer Maxim Dounin <mdounin@mdounin.ru> Wed Aug 01 02:11:58 2018 +0300
tree f6bd8bd8054a185962af5750df20ab35e983cb26
parent 90d17a1a141b11599f66588d90953544375d8861

Dav: fixed ngx_copy_file() to truncate destination file.

Previously, ngx_open_file(NGX_FILE_CREATE_OR_OPEN) was used, resulting
in destination file being partially rewritten if exists.  Notably,
this affected WebDAV COPY command (ticket #1576).

src/core/ngx_file.c

diff --git a/src/core/ngx_file.c b/src/core/ngx_file.c
index 3a94089..57ad042 100644
--- a/src/core/ngx_file.c
+++ b/src/core/ngx_file.c
@@ -839,8 +839,7 @@
         goto failed;
     }
 
-    nfd = ngx_open_file(to, NGX_FILE_WRONLY, NGX_FILE_CREATE_OR_OPEN,
-                        cf->access);
+    nfd = ngx_open_file(to, NGX_FILE_WRONLY, NGX_FILE_TRUNCATE, cf->access);
 
     if (nfd == NGX_INVALID_FILE) {
         ngx_log_error(NGX_LOG_CRIT, cf->log, ngx_errno,