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 a6687b0c9327b36c04bc358826f5989c6449a865..6c1c7f02d7ed8dcc02ade2e1d74e8d4b89836c5f 100644 (file)
--- 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;