/* First, try reading the D-Bus machine id, unless it is a symlink */
fd = open("/var/lib/dbus/machine-id", O_RDONLY|O_CLOEXEC|O_NOCTTY|O_NOFOLLOW);
if (fd >= 0) {
-
- k = loop_read(fd, id, 32, false);
+ k = loop_read(fd, id, 33, false);
close_nointr_nofail(fd);
- if (k >= 32) {
- id[32] = '\n';
- id[33] = 0;
+ if (k == 33 && id[32] == '\n') {
- log_info("Initializing machine ID from D-Bus machine ID.");
- return 0;
+ id[32] = 0;
+ if (id128_is_valid(id)) {
+ id[32] = '\n';
+ id[33] = 0;
+
+ log_info("Initializing machine ID from D-Bus machine ID.");
+ return 0;
+ }
}
}
* $container_uuid the way libvirt/LXC does it */
r = detect_container(NULL);
if (r > 0) {
- char *e;
+ _cleanup_free_ char *e = NULL;
r = getenv_for_pid(1, "container_uuid", &e);
if (r > 0) {
r = shorten_uuid(id, e);
if (r >= 0) {
log_info("Initializing machine ID from container UUID.");
- free(e);
return 0;
}
}
-
- free(e);
}
}
int machine_id_setup(void) {
_cleanup_close_ int fd = -1;
int r;
- bool writable;
+ bool writable = false;
struct stat st;
char id[34]; /* 32 + \n + \0 */
}
if (S_ISREG(st.st_mode))
- if (loop_read(fd, id, 32, false) >= 32)
- return 0;
+ if (loop_read(fd, id, 33, false) == 33 && id[32] == '\n') {
+ id[32] = 0;
+
+ if (id128_is_valid(id))
+ return 0;
+ }
/* Hmm, so, the id currently stored is not useful, then let's
* generate one */