From: Evgeny Vereshchagin <evvers@ya.ru>
Date: Tue, 13 Dec 2016 11:45:01 +0000 (+0000)
Subject: sd-id128: id128_write overwrites target file
X-Git-Tag: v233.3~111
X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=commitdiff_plain;h=40ddf32193392aee505780a0d1724f5e9e248901

sd-id128: id128_write overwrites target file
---

diff --git a/src/libelogind/sd-id128/id128-util.c b/src/libelogind/sd-id128/id128-util.c
index a6687b0c9..6c1c7f02d 100644
--- a/src/libelogind/sd-id128/id128-util.c
+++ b/src/libelogind/sd-id128/id128-util.c
@@ -187,7 +187,7 @@ int id128_write_fd(int fd, Id128Format f, sd_id128_t id, bool do_sync) {
 int id128_write(const char *p, Id128Format f, sd_id128_t id, bool do_sync) {
         _cleanup_close_ int fd = -1;
 
-        fd = open(p, O_WRONLY|O_CREAT|O_CLOEXEC|O_NOCTTY, 0444);
+        fd = open(p, O_WRONLY|O_CREAT|O_CLOEXEC|O_NOCTTY|O_TRUNC, 0444);
         if (fd < 0)
                 return -errno;