+
+/* List is built in reverse order, so mount them in reverse order. */
+static void
+mount_mps (struct mp *mp)
+{
+ if (mp) {
+ mount_mps (mp->next);
+ if (guestfs_mount (g, mp->device, mp->mountpoint) == -1)
+ exit (1);
+ }
+}
+
+static void
+interactive (void)
+{
+ script (1);
+}
+
+static void
+shell_script (void)
+{
+ script (0);
+}
+
+static void
+script (int prompt)
+{
+ char buf[8192];
+ char *cmd;
+ char *argv[64];
+ int len, i;
+
+ if (prompt)
+ printf ("\n"
+ "Welcome to guestfish, the libguestfs filesystem interactive shell for\n"
+ "editing virtual machine filesystems.\n"
+ "\n"
+ "Type: 'help' for help with commands\n"
+ " 'quit' to quit the shell\n"
+ "\n");
+
+ while (!quit) {
+ if (prompt) printf ("><fs> ");
+ if (fgets (buf, sizeof buf, stdin) == NULL) {
+ quit = 1;
+ break;
+ }
+
+ len = strlen (buf);
+ if (len > 0 && buf[len-1] == '\n') buf[len-1] = '\0';
+
+ /* Split the buffer up at whitespace. */
+ cmd = strtok (buf, " \t");
+ if (cmd == NULL)
+ continue;
+
+ i = 0;
+ while (i < sizeof argv / sizeof argv[0] &&
+ (argv[i] = strtok (NULL, " \t")) != NULL)
+ i++;
+ if (i == sizeof argv / sizeof argv[0]) {
+ fprintf (stderr, "guestfish: too many arguments in command\n");
+ exit (1);
+ }
+
+ (void) issue_command (cmd, argv);
+ }
+ if (prompt) printf ("\n");
+}
+
+static void
+cmdline (char *argv[], int optind, int argc)
+{
+ const char *cmd;
+ char **params;
+
+ if (optind >= argc) return;
+
+ cmd = argv[optind++];
+ if (strcmp (cmd, ":") == 0) {
+ fprintf (stderr, "guestfish: empty command on command line\n");
+ exit (1);
+ }
+ params = &argv[optind];
+
+ /* Search for end of command list or ":" ... */
+ while (optind < argc && strcmp (argv[optind], ":") != 0)
+ optind++;
+
+ if (optind == argc) {
+ if (issue_command (cmd, params) == -1) exit (1);
+ } else {
+ argv[optind] = NULL;
+ if (issue_command (cmd, params) == -1) exit (1);
+ cmdline (argv, optind+1, argc);
+ }
+}
+
+static int
+issue_command (const char *cmd, char *argv[])
+{
+ int argc;
+
+ for (argc = 0; argv[argc] != NULL; ++argc)
+ ;
+
+ if (strcasecmp (cmd, "help") == 0) {
+ if (argc == 0)
+ list_commands ();
+ else
+ display_command (argv[0]);
+ return 0;
+ }
+ else if (strcasecmp (cmd, "quit") == 0 ||
+ strcasecmp (cmd, "exit") == 0 ||
+ strcasecmp (cmd, "q") == 0)
+ exit (0);
+ else if (strcasecmp (cmd, "add") == 0 ||
+ strcasecmp (cmd, "drive") == 0 ||
+ strcasecmp (cmd, "add_drive") == 0) {
+ if (argc != 1) {
+ fprintf (stderr, "use 'add image' to add a guest image\n");
+ return -1;
+ }
+ else
+ return guestfs_add_drive (g, argv[0]);
+ }
+ else if (strcasecmp (cmd, "cdrom") == 0) {
+ if (argc != 1) {
+ fprintf (stderr, "use 'cdrom image' to add a CD-ROM image\n");
+ return -1;
+ }
+ else
+ return guestfs_add_cdrom (g, argv[0]);
+ }
+ else if (strcasecmp (cmd, "launch") == 0) {
+ if (argc != 0) {
+ fprintf (stderr, "'launch' command takes no parameters\n");
+ return -1;
+ }
+ else
+ return launch ();
+ }
+ else
+ return run_action (cmd, argc, argv);
+}
+
+void
+list_builtin_commands (void)
+{
+ printf ("%-20s %s\n",
+ "help", "display a list of commands or help on a command");
+ printf ("%-20s %s\n",
+ "quit", "quit guestfish");
+ printf ("%-20s %s\n",
+ "add", "add a guest image to be examined or modified");
+ printf ("%-20s %s\n",
+ "cdrom", "add a CD-ROM image to be examined");
+ printf ("%-20s %s\n",
+ "launch", "launch the subprocess");
+}
+
+void
+display_builtin_command (const char *cmd)
+{
+ if (strcasecmp (cmd, "add") == 0)
+ printf ("add - add a guest image to be examined or modified\n"
+ " add <image>\n");
+ else if (strcasecmp (cmd, "cdrom") == 0)
+ printf ("cdrom - add a CD-ROM image to be examined\n"
+ " cdrom <iso-file>\n");
+ else if (strcasecmp (cmd, "help") == 0)
+ printf ("help - display a list of commands or help on a command\n"
+ " help cmd\n"
+ " help\n");
+ else if (strcasecmp (cmd, "quit") == 0)
+ printf ("quit - quit guestfish\n"
+ " quit\n");
+ else if (strcasecmp (cmd, "launch") == 0)
+ printf ("launch - launch the subprocess\n"
+ " launch\n");
+ else
+ fprintf (stderr, "%s: command not known, use -h to list all commands\n",
+ cmd);
+}