- /* Also check for the old location in /etc, just in case. */
- p = strjoina(path, "/etc/os-release");
- r = access(p, F_OK);
+ /* We use /usr/lib/os-release as flag file if something is an OS */
+ r = chase_symlinks("/usr/lib/os-release", path, CHASE_PREFIX_ROOT, NULL);
+ if (r == -ENOENT) {
+
+ /* Also check for the old location in /etc, just in case. */
+ r = chase_symlinks("/etc/os-release", path, CHASE_PREFIX_ROOT, NULL);
+ if (r == -ENOENT)
+ return 0; /* We got nothing */
+ }
+ if (r < 0)
+ return r;