+ 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) {
+ quit = 1;
+ return 0;
+ }
+ else if (strcasecmp (cmd, "add") == 0 ||
+ strcasecmp (cmd, "drive") == 0 ||
+ strcasecmp (cmd, "add-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 ||
+ strcasecmp (cmd, "add-cdrom") == 0 ||
+ strcasecmp (cmd, "add_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, "alloc") == 0 ||
+ strcasecmp (cmd, "allocate") == 0) {
+ if (argc != 2) {
+ fprintf (stderr, "use 'alloc file size' to create an image\n");
+ return -1;
+ }
+ else {
+ off_t size;
+ int fd;
+
+ if (parse_size (argv[1], &size) == -1)
+ return -1;
+
+ if (g_launched) {
+ fprintf (stderr, "can't allocate or add disks after launching\n");
+ return -1;
+ }
+
+ fd = open (argv[0], O_WRONLY|O_CREAT|O_NOCTTY|O_NONBLOCK|O_TRUNC, 0666);
+ if (fd == -1) {
+ perror (argv[0]);
+ return -1;
+ }
+
+ if (posix_fallocate (fd, 0, size) == -1) {
+ perror ("fallocate");
+ close (fd);
+ unlink (argv[0]);
+ return -1;
+ }
+
+ if (close (fd) == -1) {
+ perror (argv[0]);
+ unlink (argv[0]);
+ return -1;
+ }
+
+ if (guestfs_add_drive (g, argv[0]) == -1) {
+ unlink (argv[0]);
+ return -1;
+ }
+
+ return 0;
+ }
+ }
+ else if (strcasecmp (cmd, "launch") == 0 ||
+ strcasecmp (cmd, "run") == 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)
+{
+ /* help and quit should appear at the top */
+ printf ("%-20s %s\n",
+ "help", "display a list of commands or help on a command");
+ printf ("%-20s %s\n",
+ "quit", "quit guestfish");
+
+ /* then the non-actions, in alphabetical order */
+ printf ("%-20s %s\n",
+ "add", "add a guest image to be examined or modified");
+ printf ("%-20s %s\n",
+ "alloc", "allocate an image");
+ printf ("%-20s %s\n",
+ "cdrom", "add a CD-ROM image to be examined");
+ printf ("%-20s %s\n",
+ "launch", "launch the subprocess");
+
+ /* actions are printed after this (see list_commands) */
+}