- if ( (argc < 2) || (**(argv+1) == '-') ) {
- usage( chroot_usage);
- }
- argc--;
- argv++;
-
- if (chroot (*argv) || (chdir ("/"))) {
- fprintf(stderr, "chroot: cannot change root directory to %s: %s\n",
- *argv, strerror(errno));
- exit( FALSE);
- }
-
- argc--;
- argv++;
- if (argc >= 1) {
- fprintf(stderr, "command: %s\n", *argv);
- execvp (*argv, argv);
- }
- else {
- char *prog;
- prog = getenv ("SHELL");
- if (!prog)
- prog = "/bin/sh";
- execlp (prog, prog, NULL);
- }
- fprintf(stderr, "chroot: cannot execute %s: %s\n",
- *argv, strerror(errno));
- exit( FALSE);
+ if (argc < 2) {
+ bb_show_usage();
+ }
+
+ ++argv;
+ if (chroot(*argv) || (chdir("/"))) {
+ bb_perror_msg_and_die("cannot change root directory to %s", *argv);
+ }
+
+ ++argv;
+ if (argc == 2) {
+ argv -= 2;
+ if (!(*argv = getenv("SHELL"))) {
+ *argv = (char *) DEFAULT_SHELL;
+ }
+ argv[1] = (char *) "-i";
+ }
+
+ execvp(*argv, argv);
+ bb_perror_msg_and_die("cannot execute %s", *argv);