From: Christian Brauner <christian.brauner@ubuntu.com>
Date: Fri, 23 Mar 2018 19:30:38 +0000 (+0100)
Subject: lxccontainer: truncate config file
X-Git-Tag: lxc-3.0.0.beta3~1^2
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=10034af509cca0a4e5bccf9fa740888d2f2f2348;p=thirdparty%2Flxc.git

lxccontainer: truncate config file

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
---

diff --git a/src/lxc/lxccontainer.c b/src/lxc/lxccontainer.c
index 076c68472..6d41b6cf1 100644
--- a/src/lxc/lxccontainer.c
+++ b/src/lxc/lxccontainer.c
@@ -2500,11 +2500,10 @@ static bool do_lxcapi_save_config(struct lxc_container *c, const char *alt_file)
 		lret = container_disk_lock(c);
 	else
 		lret = container_mem_lock(c);
-
 	if (lret)
 		return false;
 
-	fd = open(alt_file, O_WRONLY | O_CREAT | O_CLOEXEC,
+	fd = open(alt_file, O_WRONLY | O_CREAT | O_TRUNC | O_CLOEXEC,
 		  S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH);
 	if (fd < 0)
 		goto on_error;