- struct stat st;
-
- return !lstat(".git/HEAD", &st) &&
- S_ISLNK(st.st_mode) &&
- !access(".git/refs/", X_OK) &&
- (gitenv(DB_ENVIRONMENT) || !access(".git/objects/", X_OK));
+ if (access(".git/refs/", X_OK) ||
+ access(getenv(DB_ENVIRONMENT) ?
+ getenv(DB_ENVIRONMENT) : ".git/objects/", X_OK) ||
+ validate_symref(".git/HEAD"))
+ return 0;
+ return 1;