+ case 'v':
+ if (!isdigit(optarg[0])) {
+ struct passwd *pw = getpwnam(optarg);
+ if (pw == NULL) {
+ fprintf(stderr, "parameter '%s' bad\n",
+ optarg);
+ Usage_and_abort(name);
+ }
+ euid = pw->pw_uid;
+ } else {
+ euid = (uid_t)atoi(optarg);
+ }
+ euid_is_set = 1;
+ break;
+
+ case 'j':
+ if (!isdigit(optarg[0])) {
+ struct group *gr = getgrnam(optarg);
+ if (gr == NULL) {
+ fprintf(stderr, "getgrname %s failed\n",
+ optarg);
+ Usage_and_abort(name);
+ }
+ egid = gr->gr_gid;
+ } else {
+ egid = (gid_t)atoi(optarg);
+ }
+ egid_is_set = 1;
+ break;
+