- if (chroot (argv[1]))
- {
- name_and_error ("cannot chroot to that directory");
- return 1;
- }
- if (argc > 2)
- {
- execvp (argv[2], argv + 2);
- }
- else
- {
- prog = getenv ("SHELL");
- if (!prog)
- prog = "/bin/sh";
- execlp (prog, prog, NULL);
- }
- name_and_error ("cannot exec");
- return 1;
+ ++argv;
+ if (chroot(*argv)) {
+ bb_perror_msg_and_die("cannot change root directory to %s", *argv);
+ }
+ xchdir("/");
+
+ ++argv;
+ if (argc == 2) {
+ argv -= 2;
+ if (!(*argv = getenv("SHELL"))) {
+ *argv = (char *) DEFAULT_SHELL;
+ }
+ argv[1] = (char *) "-i";
+ }
+
+ BB_EXECVP(*argv, argv);
+ bb_perror_msg_and_die("cannot execute %s", *argv);