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-rw-r--r--src/core/machine-id-setup.c13
1 files changed, 11 insertions, 2 deletions
diff --git a/src/core/machine-id-setup.c b/src/core/machine-id-setup.c
index 9de528b6cf..0145fe2894 100644
--- a/src/core/machine-id-setup.c
+++ b/src/core/machine-id-setup.c
@@ -101,14 +101,23 @@ static int read_machine_id(int fd, char id[34]) {
return 0;
}
-static int write_machine_id(int fd, char id[34]) {
+static int write_machine_id(int fd, const char id[34]) {
+ int r;
+
assert(fd >= 0);
assert(id);
if (lseek(fd, 0, SEEK_SET) < 0)
return -errno;
- return loop_write(fd, id, 33, false);
+ r = loop_write(fd, id, 33, false);
+ if (r < 0)
+ return r;
+
+ if (fsync(fd) < 0)
+ return -errno;
+
+ return 0;
}
static int generate_machine_id(char id[34], const char *root) {