示例#1
0
int
main (int argc, char *argv[])
{
  /* Current time for --time-days, --time-relative output. */
  time (&now);

  setlocale (LC_ALL, "");
  bindtextdomain (PACKAGE, LOCALEBASEDIR);
  textdomain (PACKAGE);

  enum { HELP_OPTION = CHAR_MAX + 1 };

  static const char *options = "a:c:d:hlRvVx";
  static const struct option long_options[] = {
    { "add", 1, 0, 'a' },
    { "checksum", 2, 0, 0 },
    { "checksums", 2, 0, 0 },
    { "csv", 0, 0, 0 },
    { "connect", 1, 0, 'c' },
    { "domain", 1, 0, 'd' },
    { "echo-keys", 0, 0, 0 },
    { "extra-stat", 0, 0, 0 },
    { "extra-stats", 0, 0, 0 },
    { "format", 2, 0, 0 },
    { "help", 0, 0, HELP_OPTION },
    { "human-readable", 0, 0, 'h' },
    { "keys-from-stdin", 0, 0, 0 },
    { "long", 0, 0, 'l' },
    { "long-options", 0, 0, 0 },
    { "recursive", 0, 0, 'R' },
    { "time", 0, 0, 0 },
    { "times", 0, 0, 0 },
    { "time-days", 0, 0, 0 },
    { "time-relative", 0, 0, 0 },
    { "time-t", 0, 0, 0 },
    { "uid", 0, 0, 0 },
    { "uids", 0, 0, 0 },
    { "verbose", 0, 0, 'v' },
    { "version", 0, 0, 'V' },
    { 0, 0, 0, 0 }
  };
  struct drv *drvs = NULL;
  struct drv *drv;
  const char *format = NULL;
  int c;
  int option_index;
#define MODE_LS_L  1
#define MODE_LS_R  2
#define MODE_LS_LR (MODE_LS_L|MODE_LS_R)
  int mode = 0;

  g = guestfs_create ();
  if (g == NULL) {
    fprintf (stderr, _("guestfs_create: failed to create handle\n"));
    exit (EXIT_FAILURE);
  }

  for (;;) {
    c = getopt_long (argc, argv, options, long_options, &option_index);
    if (c == -1) break;

    switch (c) {
    case 0:			/* options which are long only */
      if (STREQ (long_options[option_index].name, "long-options"))
        display_long_options (long_options);
      else if (STREQ (long_options[option_index].name, "keys-from-stdin")) {
        keys_from_stdin = 1;
      } else if (STREQ (long_options[option_index].name, "echo-keys")) {
        echo_keys = 1;
      } else if (STREQ (long_options[option_index].name, "format")) {
        if (!optarg || STREQ (optarg, ""))
          format = NULL;
        else
          format = optarg;
      } else if (STREQ (long_options[option_index].name, "checksum") ||
                 STREQ (long_options[option_index].name, "checksums")) {
        if (!optarg || STREQ (optarg, ""))
          checksum = "md5";
        else
          checksum = optarg;
      } else if (STREQ (long_options[option_index].name, "csv")) {
        csv = 1;
      } else if (STREQ (long_options[option_index].name, "extra-stat") ||
                 STREQ (long_options[option_index].name, "extra-stats")) {
        enable_extra_stats = 1;
      } else if (STREQ (long_options[option_index].name, "time") ||
                 STREQ (long_options[option_index].name, "times")) {
        enable_times = 1;
      } else if (STREQ (long_options[option_index].name, "time-t")) {
        enable_times = 1;
        time_t_output = 1;
      } else if (STREQ (long_options[option_index].name, "time-relative")) {
        enable_times = 1;
        time_t_output = 1;
        time_relative = 1;
      } else if (STREQ (long_options[option_index].name, "time-days")) {
        enable_times = 1;
        time_t_output = 1;
        time_relative = 2;
      } else if (STREQ (long_options[option_index].name, "uid") ||
                 STREQ (long_options[option_index].name, "uids")) {
        enable_uids = 1;
      } else {
        fprintf (stderr, _("%s: unknown long option: %s (%d)\n"),
                 program_name, long_options[option_index].name, option_index);
        exit (EXIT_FAILURE);
      }
      break;

    case 'a':
      OPTION_a;
      break;

    case 'c':
      OPTION_c;
      break;

    case 'd':
      OPTION_d;
      break;

    case 'h':
      human = 1;
      break;

    case 'l':
      mode |= MODE_LS_L;
      break;

    case 'R':
      mode |= MODE_LS_R;
      break;

    case 'v':
      OPTION_v;
      break;

    case 'V':
      OPTION_V;
      break;

    case 'x':
      OPTION_x;
      break;

    case HELP_OPTION:
      usage (EXIT_SUCCESS);

    default:
      usage (EXIT_FAILURE);
    }
  }

  /* Old-style syntax?  There were no -a or -d options in the old
   * virt-ls which is how we detect this.
   */
  if (drvs == NULL) {
    /* argc - 1 because last parameter is the single directory name. */
    while (optind < argc - 1) {
      if (strchr (argv[optind], '/') ||
          access (argv[optind], F_OK) == 0) { /* simulate -a option */
        drv = calloc (1, sizeof (struct drv));
        if (!drv) {
          perror ("malloc");
          exit (EXIT_FAILURE);
        }
        drv->type = drv_a;
        drv->a.filename = strdup (argv[optind]);
        if (!drv->a.filename) {
          perror ("strdup");
          exit (EXIT_FAILURE);
        }
        drv->next = drvs;
        drvs = drv;
      } else {                  /* simulate -d option */
        drv = calloc (1, sizeof (struct drv));
        if (!drv) {
          perror ("malloc");
          exit (EXIT_FAILURE);
        }
        drv->type = drv_d;
        drv->d.guest = argv[optind];
        drv->next = drvs;
        drvs = drv;
      }

      optind++;
    }
  }

  /* These are really constants, but they have to be variables for the
   * options parsing code.  Assert here that they have known-good
   * values.
   */
  assert (read_only == 1);
  assert (inspector == 1);
  assert (live == 0);

  /* Many flags only apply to -lR mode. */
  if (mode != MODE_LS_LR &&
      (csv || human || enable_uids || enable_times || enable_extra_stats ||
       checksum)) {
    fprintf (stderr, _("%s: used a flag which can only be combined with -lR mode\nFor more information, read the virt-ls(1) man page.\n"),
             program_name);
    exit (EXIT_FAILURE);
  }

  /* CSV && human is unsafe because spreadsheets fail to parse these
   * fields correctly.  (RHBZ#600977).
   */
  if (human && csv) {
    fprintf (stderr, _("%s: you cannot use -h and --csv options together.\n"),
             program_name);
    exit (EXIT_FAILURE);
  }

  /* User must specify at least one directory name on the command line. */
  if (optind >= argc || argc - optind < 1)
    usage (EXIT_FAILURE);

  /* User must have specified some drives. */
  if (drvs == NULL)
    usage (EXIT_FAILURE);

  /* Add drives, inspect and mount.  Note that inspector is always true,
   * and there is no -m option.
   */
  add_drives (drvs, 'a');

  if (guestfs_launch (g) == -1)
    exit (EXIT_FAILURE);

  inspect_mount ();

  /* Free up data structures, no longer needed after this point. */
  free_drives (drvs);

  unsigned errors = 0;

  while (optind < argc) {
    const char *dir = argv[optind];

    switch (mode) {
    case 0:                     /* no -l or -R option */
      if (do_ls (dir) == -1)
        errors++;
      break;

    case MODE_LS_L:             /* virt-ls -l */
      if (do_ls_l (dir) == -1)
        errors++;
      break;

    case MODE_LS_R:             /* virt-ls -R */
      if (do_ls_R (dir) == -1)
        errors++;
      break;

    case MODE_LS_LR:            /* virt-ls -lR */
      if (do_ls_lR (dir) == -1)
        errors++;
      break;

    default:
      abort ();                 /* can't happen */
    }

    optind++;
  }

  guestfs_close (g);

  exit (errors == 0 ? EXIT_SUCCESS : EXIT_FAILURE);
}
示例#2
0
int
main (int argc, char *argv[])
{
  /* Set global program name that is not polluted with libtool artifacts.  */
  set_program_name (argv[0]);

  setlocale (LC_ALL, "");
  bindtextdomain (PACKAGE, LOCALEBASEDIR);
  textdomain (PACKAGE);

  /* We use random(3) below. */
  srandom (time (NULL));

  enum { HELP_OPTION = CHAR_MAX + 1 };

  static const char *options = "a:b:c:d:e:vVx";
  static const struct option long_options[] = {
    { "add", 1, 0, 'a' },
    { "backup", 1, 0, 'b' },
    { "connect", 1, 0, 'c' },
    { "domain", 1, 0, 'd' },
    { "echo-keys", 0, 0, 0 },
    { "expr", 1, 0, 'e' },
    { "format", 2, 0, 0 },
    { "help", 0, 0, HELP_OPTION },
    { "keys-from-stdin", 0, 0, 0 },
    { "verbose", 0, 0, 'v' },
    { "version", 0, 0, 'V' },
    { 0, 0, 0, 0 }
  };
  struct drv *drvs = NULL;
  struct drv *drv;
  const char *format = NULL;
  int c;
  int option_index;
  char *root, **roots;

  g = guestfs_create ();
  if (g == NULL) {
    fprintf (stderr, _("guestfs_create: failed to create handle\n"));
    exit (EXIT_FAILURE);
  }

  argv[0] = bad_cast (program_name);

  for (;;) {
    c = getopt_long (argc, argv, options, long_options, &option_index);
    if (c == -1) break;

    switch (c) {
    case 0:			/* options which are long only */
      if (STREQ (long_options[option_index].name, "keys-from-stdin")) {
        keys_from_stdin = 1;
      } else if (STREQ (long_options[option_index].name, "echo-keys")) {
        echo_keys = 1;
      } else if (STREQ (long_options[option_index].name, "format")) {
        if (!optarg || STREQ (optarg, ""))
          format = NULL;
        else
          format = optarg;
      } else {
        fprintf (stderr, _("%s: unknown long option: %s (%d)\n"),
                 program_name, long_options[option_index].name, option_index);
        exit (EXIT_FAILURE);
      }
      break;

    case 'a':
      OPTION_a;
      break;

    case 'b':
      if (backup_extension) {
        fprintf (stderr, _("%s: -b option given multiple times\n"),
                 program_name);
        exit (EXIT_FAILURE);
      }
      backup_extension = optarg;
      break;

    case 'c':
      OPTION_c;
      break;

    case 'd':
      OPTION_d;
      break;

    case 'e':
      if (perl_expr) {
        fprintf (stderr, _("%s: -e option given multiple times\n"),
                 program_name);
        exit (EXIT_FAILURE);
      }
      perl_expr = optarg;
      break;

    case 'h':
      usage (EXIT_SUCCESS);

    case 'v':
      OPTION_v;
      break;

    case 'V':
      OPTION_V;
      break;

    case 'x':
      OPTION_x;
      break;

    case HELP_OPTION:
      usage (EXIT_SUCCESS);

    default:
      usage (EXIT_FAILURE);
    }
  }

  /* Old-style syntax?  There were no -a or -d options in the old
   * virt-edit which is how we detect this.
   */
  if (drvs == NULL) {
    /* argc - 1 because last parameter is the single filename. */
    while (optind < argc - 1) {
      if (strchr (argv[optind], '/') ||
          access (argv[optind], F_OK) == 0) { /* simulate -a option */
        drv = malloc (sizeof (struct drv));
        if (!drv) {
          perror ("malloc");
          exit (EXIT_FAILURE);
        }
        drv->type = drv_a;
        drv->a.filename = argv[optind];
        drv->a.format = NULL;
        drv->next = drvs;
        drvs = drv;
      } else {                  /* simulate -d option */
        drv = malloc (sizeof (struct drv));
        if (!drv) {
          perror ("malloc");
          exit (EXIT_FAILURE);
        }
        drv->type = drv_d;
        drv->d.guest = argv[optind];
        drv->next = drvs;
        drvs = drv;
      }

      optind++;
    }
  }

  /* These are really constants, but they have to be variables for the
   * options parsing code.  Assert here that they have known-good
   * values.
   */
  assert (read_only == 0);
  assert (inspector == 1);
  assert (live == 0);

  /* User must specify at least one filename on the command line. */
  if (optind >= argc || argc - optind < 1)
    usage (EXIT_FAILURE);

  /* User must have specified some drives. */
  if (drvs == NULL)
    usage (EXIT_FAILURE);

  /* Add drives. */
  add_drives (drvs, 'a');

  if (guestfs_launch (g) == -1)
    exit (EXIT_FAILURE);

  inspect_mount ();

  /* Free up data structures, no longer needed after this point. */
  free_drives (drvs);

  /* Get root mountpoint. */
  roots = guestfs_inspect_get_roots (g);
  if (!roots)
    exit (EXIT_FAILURE);
  /* see fish/inspect.c:inspect_mount */
  assert (roots[0] != NULL && roots[1] == NULL);
  root = roots[0];
  free (roots);

  while (optind < argc) {
    edit (argv[optind], root);
    optind++;
  }

  free (root);

  /* Cleanly unmount the disks after editing. */
  if (guestfs_umount_all (g) == -1 || guestfs_sync (g) == -1)
    exit (EXIT_FAILURE);

  guestfs_close (g);

  exit (EXIT_SUCCESS);
}
示例#3
0
int
main (int argc, char *argv[])
{
  setlocale (LC_ALL, "");
  bindtextdomain (PACKAGE, LOCALEBASEDIR);
  textdomain (PACKAGE);

  enum { HELP_OPTION = CHAR_MAX + 1 };

  static const char *options = "a:c:d:vVx";
  static const struct option long_options[] = {
    { "add", 1, 0, 'a' },
    { "connect", 1, 0, 'c' },
    { "domain", 1, 0, 'd' },
    { "echo-keys", 0, 0, 0 },
    { "format", 2, 0, 0 },
    { "help", 0, 0, HELP_OPTION },
    { "keys-from-stdin", 0, 0, 0 },
    { "long-options", 0, 0, 0 },
    { "short-options", 0, 0, 0 },
    { "verbose", 0, 0, 'v' },
    { "version", 0, 0, 'V' },
    { 0, 0, 0, 0 }
  };
  struct drv *drvs = NULL;
  const char *format = NULL;
  bool format_consumed = true;
  int c;
  int r;
  int option_index;

  g = guestfs_create ();
  if (g == NULL)
    error (EXIT_FAILURE, errno, "guestfs_create");

  for (;;) {
    c = getopt_long (argc, argv, options, long_options, &option_index);
    if (c == -1) break;

    switch (c) {
    case 0:			/* options which are long only */
      if (STREQ (long_options[option_index].name, "long-options"))
        display_long_options (long_options);
      else if (STREQ (long_options[option_index].name, "short-options"))
        display_short_options (options);
      else if (STREQ (long_options[option_index].name, "keys-from-stdin")) {
        keys_from_stdin = 1;
      } else if (STREQ (long_options[option_index].name, "echo-keys")) {
        echo_keys = 1;
      } else if (STREQ (long_options[option_index].name, "format")) {
        OPTION_format;
      } else
        error (EXIT_FAILURE, 0,
               _("unknown long option: %s (%d)"),
               long_options[option_index].name, option_index);
      break;

    case 'a':
      OPTION_a;
      break;

    case 'c':
      OPTION_c;
      break;

    case 'd':
      OPTION_d;
      break;

    case 'v':
      OPTION_v;
      break;

    case 'V':
      OPTION_V;
      break;

    case 'x':
      OPTION_x;
      break;

    case HELP_OPTION:
      usage (EXIT_SUCCESS);

    default:
      usage (EXIT_FAILURE);
    }
  }

  /* These are really constants, but they have to be variables for the
   * options parsing code.  Assert here that they have known-good
   * values.
   */
  assert (read_only == 1);
  assert (inspector == 1);
  assert (live == 0);

  /* User must not specify more arguments on the command line. */
  if (optind != argc) {
    fprintf (stderr, _("%s: error: extra argument '%s' on command line.\n"
             "Make sure to specify the argument for --format "
             "like '--format=%s'.\n"),
             guestfs_int_program_name, argv[optind], argv[optind]);
    usage (EXIT_FAILURE);
  }

  CHECK_OPTION_format_consumed;

  /* User must have specified some drives. */
  if (drvs == NULL) {
    fprintf (stderr, _("%s: error: you must specify at least one -a or -d option.\n"),
             guestfs_int_program_name);
    usage (EXIT_FAILURE);
  }

  /* Add drives, inspect and mount.  Note that inspector is always true,
   * and there is no -m option.
   */
  add_drives (drvs, 'a');

  if (guestfs_launch (g) == -1)
    exit (EXIT_FAILURE);

  inspect_mount ();

  /* Free up data structures, no longer needed after this point. */
  free_drives (drvs);

  r = do_log ();

  guestfs_close (g);

  exit (r == 0 ? EXIT_SUCCESS : EXIT_FAILURE);
}
示例#4
0
int
main (int argc, char *argv[])
{
  setlocale (LC_ALL, "");
  bindtextdomain (PACKAGE, LOCALEBASEDIR);
  textdomain (PACKAGE);

  parse_config ();

  enum { HELP_OPTION = CHAR_MAX + 1 };

  /* The command line arguments are broadly compatible with (a subset
   * of) guestfish.  Thus we have to deal mainly with -a, -m and --ro.
   */
  static const char options[] = "a:c:d:im:no:rvVwx";
  static const struct option long_options[] = {
    { "add", 1, 0, 'a' },
    { "connect", 1, 0, 'c' },
    { "dir-cache-timeout", 1, 0, 0 },
    { "domain", 1, 0, 'd' },
    { "echo-keys", 0, 0, 0 },
    { "fd", 1, 0, 0 },
    { "format", 2, 0, 0 },
    { "fuse-help", 0, 0, 0 },
    { "help", 0, 0, HELP_OPTION },
    { "inspector", 0, 0, 'i' },
    { "keys-from-stdin", 0, 0, 0 },
    { "live", 0, 0, 0 },
    { "long-options", 0, 0, 0 },
    { "mount", 1, 0, 'm' },
    { "no-fork", 0, 0, 0 },
    { "no-sync", 0, 0, 'n' },
    { "option", 1, 0, 'o' },
    { "pid-file", 1, 0, 0 },
    { "ro", 0, 0, 'r' },
    { "rw", 0, 0, 'w' },
    { "selinux", 0, 0, 0 },
    { "short-options", 0, 0, 0 },
    { "trace", 0, 0, 'x' },
    { "verbose", 0, 0, 'v' },
    { "version", 0, 0, 'V' },
    { 0, 0, 0, 0 }
  };

  struct drv *drvs = NULL;
  struct mp *mps = NULL;
  struct mp *mp;
  char *p;
  const char *format = NULL;
  bool format_consumed = true;
  int c, r;
  int option_index;
  struct sigaction sa;

  int debug_calls = 0;
  int dir_cache_timeout = -1;
  int do_fork = 1;
  char *fuse_options = NULL;
  char *pid_file = NULL;
  int pipe_fd = -1;

  struct guestfs_mount_local_argv optargs;

  /* LC_ALL=C is required so we can parse error messages. */
  setenv ("LC_ALL", "C", 1);

  memset (&sa, 0, sizeof sa);
  sa.sa_handler = SIG_IGN;
  sa.sa_flags = SA_RESTART;
  sigaction (SIGPIPE, &sa, NULL);

  g = guestfs_create ();
  if (g == NULL)
    error (EXIT_FAILURE, errno, "guestfs_create");

  for (;;) {
    c = getopt_long (argc, argv, options, long_options, &option_index);
    if (c == -1) break;

    switch (c) {
    case 0:			/* options which are long only */
      if (STREQ (long_options[option_index].name, "long-options"))
        display_long_options (long_options);
      else if (STREQ (long_options[option_index].name, "short-options"))
        display_short_options (options);
      else if (STREQ (long_options[option_index].name, "dir-cache-timeout"))
        dir_cache_timeout = atoi (optarg);
      else if (STREQ (long_options[option_index].name, "fuse-help"))
        fuse_help ();
      else if (STREQ (long_options[option_index].name, "selinux")) {
        /* nothing */
      } else if (STREQ (long_options[option_index].name, "format")) {
        OPTION_format;
      } else if (STREQ (long_options[option_index].name, "keys-from-stdin")) {
        keys_from_stdin = 1;
      } else if (STREQ (long_options[option_index].name, "echo-keys")) {
        echo_keys = 1;
      } else if (STREQ (long_options[option_index].name, "live")) {
        live = 1;
      } else if (STREQ (long_options[option_index].name, "pid-file")) {
        pid_file = optarg;
      } else if (STREQ (long_options[option_index].name, "no-fork")) {
        do_fork = 0;
      } else if (STREQ (long_options[option_index].name, "fd")) {
        if (sscanf (optarg, "%d", &pipe_fd) != 1 || pipe_fd < 0)
          error (EXIT_FAILURE, 0,
                 _("unable to parse --fd option value: %s"), optarg);
      } else
        error (EXIT_FAILURE, 0,
               _("unknown long option: %s (%d)"),
               long_options[option_index].name, option_index);
      break;

    case 'a':
      OPTION_a;
      break;

    case 'c':
      OPTION_c;
      break;

    case 'd':
      OPTION_d;
      break;

    case 'i':
      OPTION_i;
      break;

    case 'm':
      OPTION_m;
      break;

    case 'n':
      OPTION_n;
      break;

    case 'o':
      fuse_opt_add_opt_escaped (&fuse_options, optarg);
      break;

    case 'r':
      OPTION_r;
      break;

    case 'v':
      OPTION_v;
      break;

    case 'V':
      OPTION_V;
      break;

    case 'w':
      OPTION_w;
      break;

    case 'x':
      OPTION_x;
      debug_calls = 1;
      do_fork = 0;
      break;

    case HELP_OPTION:
      usage (EXIT_SUCCESS);

    default:
      usage (EXIT_FAILURE);
    }
  }

  CHECK_OPTION_format_consumed;

  /* Check we have the right options. */
  if (!live) {
    if (drvs == NULL) {
      fprintf (stderr, _("%s: error: you must specify at least one -a or -d option.\n"),
               getprogname ());
      usage (EXIT_FAILURE);
    }
    if (!(mps || inspector)) {
      fprintf (stderr, _("%s: error: you must specify either -i at least one -m option.\n"),
               getprogname ());
      usage (EXIT_FAILURE);
    }
  } else {
    size_t count_d = 0, count_other = 0;
    struct drv *drv;

    if (read_only)
      error (EXIT_FAILURE, 0, _("--live is not compatible with --ro option"));

    if (inspector)
      error (EXIT_FAILURE, 0, _("--live is not compatible with -i option"));

    /* --live: make sure there was one -d option and no -a options */
    for (drv = drvs; drv; drv = drv->next) {
      if (drv->type == drv_d)
        count_d++;
      else
        count_other++;
    }

    if (count_d != 1)
      error (EXIT_FAILURE, 0,
             _("with --live, you must use exactly one -d option"));

    if (count_other != 0)
      error (EXIT_FAILURE, 0, _("--live is not compatible with -a option"));
  }

  /* We'd better have a mountpoint. */
  if (optind+1 != argc)
    error (EXIT_FAILURE, 0,
           _("you must specify a mountpoint in the host filesystem"));

  /* If we're forking, we can't use the recovery process. */
  if (guestfs_set_recovery_proc (g, !do_fork) == -1)
    exit (EXIT_FAILURE);

  /* Do the guest drives and mountpoints. */
  add_drives (drvs, 'a');
  if (guestfs_launch (g) == -1)
    exit (EXIT_FAILURE);
  if (inspector)
    inspect_mount ();
  mount_mps (mps);

  free_drives (drvs);
  free_mps (mps);

  /* FUSE example does this, not clear if it's necessary, but ... */
  if (guestfs_umask (g, 0) == -1)
    exit (EXIT_FAILURE);

  optargs.bitmask = 0;
  if (read_only) {
    optargs.bitmask |= GUESTFS_MOUNT_LOCAL_READONLY_BITMASK;
    optargs.readonly = 1;
  }
  if (debug_calls) {
    optargs.bitmask |= GUESTFS_MOUNT_LOCAL_DEBUGCALLS_BITMASK;
    optargs.debugcalls = 1;
  }
  if (dir_cache_timeout > 0) {
    optargs.bitmask |= GUESTFS_MOUNT_LOCAL_CACHETIMEOUT_BITMASK;
    optargs.cachetimeout = dir_cache_timeout;
  }
  if (fuse_options != NULL) {
    optargs.bitmask |= GUESTFS_MOUNT_LOCAL_OPTIONS_BITMASK;
    optargs.options = fuse_options;
  }

  if (guestfs_mount_local_argv (g, argv[optind], &optargs) == -1)
    exit (EXIT_FAILURE);

  /* Daemonize. */
  if (do_fork) {
    pid_t pid;
    int fd;

    pid = fork ();
    if (pid == -1)
      error (EXIT_FAILURE, errno, "fork");

    if (pid != 0) {             /* parent */
      if (write_pid_file (pid_file, pid) == -1)
        _exit (EXIT_FAILURE);
      if (write_pipe_fd (pipe_fd) == -1)
        _exit (EXIT_FAILURE);

      _exit (EXIT_SUCCESS);
    }

    /* Emulate what old fuse_daemonize used to do. */
    if (setsid () == -1)
      error (EXIT_FAILURE, errno, "setsid");

    ignore_value (chdir ("/"));

    fd = open ("/dev/null", O_RDWR);
    if (fd >= 0) {
      dup2 (fd, 0);
      dup2 (fd, 1);
      dup2 (fd, 2);
      if (fd > 2)
        close (fd);
    }
  }
  else {
    /* not forking, write PID file and pipe FD anyway */
    if (write_pid_file (pid_file, getpid ()) == -1)
      exit (EXIT_FAILURE);
    if (write_pipe_fd (pipe_fd) == -1)
      exit (EXIT_FAILURE);
  }

  /* At the last minute, remove the libguestfs error handler.  In code
   * above this point, the default error handler has been used which
   * sends all errors to stderr.  From now on, the FUSE code will
   * convert errors into error codes (errnos) when appropriate.
   */
  guestfs_push_error_handler (g, NULL, NULL);

  /* Main loop. */
  r = guestfs_mount_local_run (g);

  guestfs_pop_error_handler (g);

  /* Cleanup. */
  if (guestfs_shutdown (g) == -1)
    r = -1;
  guestfs_close (g);

  /* Don't delete PID file until the cleanup has been completed. */
  if (pid_file)
    unlink (pid_file);

  exit (r == 0 ? EXIT_SUCCESS : EXIT_FAILURE);
}
示例#5
0
int
main (int argc, char *argv[])
{
    /* Current time for --time-days, --time-relative output. */
    time (&now);

    setlocale (LC_ALL, "");
    bindtextdomain (PACKAGE, LOCALEBASEDIR);
    textdomain (PACKAGE);

    enum { HELP_OPTION = CHAR_MAX + 1 };

    static const char *options = "a:A:c:d:D:hvVx";
    static const struct option long_options[] = {
        { "add", 1, 0, 'a' },
        { "all", 0, 0, 0 },
        { "atime", 0, 0, 0 },
        { "checksum", 2, 0, 0 },
        { "checksums", 2, 0, 0 },
        { "csv", 0, 0, 0 },
        { "connect", 1, 0, 'c' },
        { "dir-link", 0, 0, 0 },
        { "dir-links", 0, 0, 0 },
        { "dir-nlink", 0, 0, 0 },
        { "dir-nlinks", 0, 0, 0 },
        { "dir-time", 0, 0, 0 },
        { "dir-times", 0, 0, 0 },
        { "domain", 1, 0, 'd' },
        { "echo-keys", 0, 0, 0 },
        { "extra-stat", 0, 0, 0 },
        { "extra-stats", 0, 0, 0 },
        { "format", 2, 0, 0 },
        { "help", 0, 0, HELP_OPTION },
        { "human-readable", 0, 0, 'h' },
        { "keys-from-stdin", 0, 0, 0 },
        { "short-options", 0, 0, 0 },
        { "time", 0, 0, 0 },
        { "times", 0, 0, 0 },
        { "time-days", 0, 0, 0 },
        { "time-relative", 0, 0, 0 },
        { "time-t", 0, 0, 0 },
        { "uid", 0, 0, 0 },
        { "uids", 0, 0, 0 },
        { "verbose", 0, 0, 'v' },
        { "version", 0, 0, 'V' },
        { "xattr", 0, 0, 0 },
        { "xattrs", 0, 0, 0 },
        { 0, 0, 0, 0 }
    };
    struct drv *drvs = NULL;      /* First guest. */
    struct drv *drvs2 = NULL;     /* Second guest. */
    const char *format = NULL;
    bool format_consumed = true;
    int c;
    int option_index;
    struct tree *tree1, *tree2;

    g = guestfs_create ();
    if (g == NULL) {
        fprintf (stderr, _("guestfs_create: failed to create handle\n"));
        exit (EXIT_FAILURE);
    }

    g2 = guestfs_create ();
    if (g2 == NULL) {
        fprintf (stderr, _("guestfs_create: failed to create handle\n"));
        exit (EXIT_FAILURE);
    }

    for (;;) {
        c = getopt_long (argc, argv, options, long_options, &option_index);
        if (c == -1) break;

        switch (c) {
        case 0:			/* options which are long only */
            if (STREQ (long_options[option_index].name, "long-options"))
                display_long_options (long_options);
            else if (STREQ (long_options[option_index].name, "short-options"))
                display_short_options (options);
            else if (STREQ (long_options[option_index].name, "keys-from-stdin")) {
                keys_from_stdin = 1;
            } else if (STREQ (long_options[option_index].name, "echo-keys")) {
                echo_keys = 1;
            } else if (STREQ (long_options[option_index].name, "format")) {
                OPTION_format;
            } else if (STREQ (long_options[option_index].name, "all")) {
                enable_extra_stats = enable_times = enable_uids = enable_xattrs = 1;
            } else if (STREQ (long_options[option_index].name, "atime")) {
                atime = 1;
            } else if (STREQ (long_options[option_index].name, "csv")) {
                csv = 1;
            } else if (STREQ (long_options[option_index].name, "checksum") ||
                       STREQ (long_options[option_index].name, "checksums")) {
                if (!optarg || STREQ (optarg, ""))
                    checksum = "md5";
                else
                    checksum = optarg;
            } else if (STREQ (long_options[option_index].name, "dir-link") ||
                       STREQ (long_options[option_index].name, "dir-links") ||
                       STREQ (long_options[option_index].name, "dir-nlink") ||
                       STREQ (long_options[option_index].name, "dir-nlinks")) {
                dir_links = 1;
            } else if (STREQ (long_options[option_index].name, "dir-time") ||
                       STREQ (long_options[option_index].name, "dir-times")) {
                dir_times = 1;
            } else if (STREQ (long_options[option_index].name, "extra-stat") ||
                       STREQ (long_options[option_index].name, "extra-stats")) {
                enable_extra_stats = 1;
            } else if (STREQ (long_options[option_index].name, "time") ||
                       STREQ (long_options[option_index].name, "times")) {
                enable_times = 1;
            } else if (STREQ (long_options[option_index].name, "time-t")) {
                enable_times = 1;
                time_t_output = 1;
            } else if (STREQ (long_options[option_index].name, "time-relative")) {
                enable_times = 1;
                time_t_output = 1;
                time_relative = 1;
            } else if (STREQ (long_options[option_index].name, "time-days")) {
                enable_times = 1;
                time_t_output = 1;
                time_relative = 2;
            } else if (STREQ (long_options[option_index].name, "uid") ||
                       STREQ (long_options[option_index].name, "uids")) {
                enable_uids = 1;
            } else if (STREQ (long_options[option_index].name, "xattr") ||
                       STREQ (long_options[option_index].name, "xattrs")) {
                enable_xattrs = 1;
            } else {
                fprintf (stderr, _("%s: unknown long option: %s (%d)\n"),
                         guestfs_int_program_name, long_options[option_index].name, option_index);
                exit (EXIT_FAILURE);
            }
            break;

        case 'a':
            OPTION_a;
            break;

        case 'A':
            OPTION_A;
            break;

        case 'c':
            OPTION_c;
            break;

        case 'd':
            OPTION_d;
            break;

        case 'D':
            OPTION_D;
            break;

        case 'h':
            human = 1;
            break;

        case 'v':
            /* OPTION_v; */
            verbose++;
            guestfs_set_verbose (g, verbose);
            guestfs_set_verbose (g2, verbose);
            break;

        case 'V':
            OPTION_V;
            break;

        case 'x':
            /* OPTION_x; */
            guestfs_set_trace (g, 1);
            guestfs_set_trace (g2, 1);
            break;

        case HELP_OPTION:
            usage (EXIT_SUCCESS);

        default:
            usage (EXIT_FAILURE);
        }
    }

    if (drvs == NULL || drvs2 == NULL) {
        fprintf (stderr,
                 _("%s: you must specify some -a|-A|-d|-D options, see %s(1)\n"),
                 guestfs_int_program_name, guestfs_int_program_name);
        usage (EXIT_FAILURE);
    }

    /* CSV && human is unsafe because spreadsheets fail to parse these
     * fields correctly.  (RHBZ#600977).
     */
    if (human && csv) {
        fprintf (stderr, _("%s: you cannot use -h and --csv options together.\n"),
                 guestfs_int_program_name);
        exit (EXIT_FAILURE);
    }

    if (optind != argc) {
        fprintf (stderr, _("%s: extra arguments on the command line\n"),
                 guestfs_int_program_name);
        usage (EXIT_FAILURE);
    }

    /* These are really constants, but they have to be variables for the
     * options parsing code.  Assert here that they have known-good
     * values.
     */
    assert (read_only == 1);
    assert (inspector == 1);
    assert (live == 0);

    CHECK_OPTION_format_consumed;

    unsigned errors = 0;

    /* Mount up first guest. */
    add_drives (drvs, 'a');

    if (guestfs_launch (g) == -1)
        exit (EXIT_FAILURE);

    inspect_mount ();

    if ((tree1 = visit_guest (g)) == NULL)
        errors++;

    /* Mount up second guest. */
    add_drives_handle (g2, drvs2, 'a');

    if (guestfs_launch (g2) == -1)
        exit (EXIT_FAILURE);

    inspect_mount_handle (g2);

    if ((tree2 = visit_guest (g2)) == NULL)
        errors++;

    if (errors == 0) {
        if (diff_guests (tree1, tree2) == -1)
            errors++;
    }

    free_tree (tree1);
    free_tree (tree2);

    free_drives (drvs);
    free_drives (drvs2);

    guestfs_close (g);
    guestfs_close (g2);

    exit (errors == 0 ? EXIT_SUCCESS : EXIT_FAILURE);
}
示例#6
0
int
main (int argc, char *argv[])
{
  setlocale (LC_ALL, "");
  bindtextdomain (PACKAGE, LOCALEBASEDIR);
  textdomain (PACKAGE);

  parse_config ();

  enum { HELP_OPTION = CHAR_MAX + 1 };

  /* The command line arguments are broadly compatible with (a subset
   * of) guestfish.  Thus we have to deal mainly with -a, -m and --ro.
   */
  static const char *options = "a:c:d:im:no:rv?Vwx";
  static const struct option long_options[] = {
    { "add", 1, 0, 'a' },
    { "connect", 1, 0, 'c' },
    { "dir-cache-timeout", 1, 0, 0 },
    { "domain", 1, 0, 'd' },
    { "echo-keys", 0, 0, 0 },
    { "format", 2, 0, 0 },
    { "fuse-help", 0, 0, 0 },
    { "help", 0, 0, HELP_OPTION },
    { "inspector", 0, 0, 'i' },
    { "keys-from-stdin", 0, 0, 0 },
    { "live", 0, 0, 0 },
    { "mount", 1, 0, 'm' },
    { "no-sync", 0, 0, 'n' },
    { "option", 1, 0, 'o' },
    { "ro", 0, 0, 'r' },
    { "rw", 0, 0, 'w' },
    { "selinux", 0, 0, 0 },
    { "trace", 0, 0, 'x' },
    { "verbose", 0, 0, 'v' },
    { "version", 0, 0, 'V' },
    { 0, 0, 0, 0 }
  };

  struct drv *drvs = NULL;
  struct drv *drv;
  struct mp *mps = NULL;
  struct mp *mp;
  char *p;
  const char *format = NULL;
  int c, r;
  int option_index;
  struct sigaction sa;

  int fuse_argc = 0;
  const char **fuse_argv = NULL;

#define ADD_FUSE_ARG(str)                                               \
  do {                                                                  \
    fuse_argc ++;                                                       \
    fuse_argv = realloc (fuse_argv, (1+fuse_argc) * sizeof (char *));   \
    if (!fuse_argv) {                                                   \
      perror ("realloc");                                               \
      exit (EXIT_FAILURE);                                                         \
    }                                                                   \
    fuse_argv[fuse_argc-1] = (str);                                     \
    fuse_argv[fuse_argc] = NULL;                                        \
  } while (0)

  /* LC_ALL=C is required so we can parse error messages. */
  setenv ("LC_ALL", "C", 1);

  /* Set global program name that is not polluted with libtool artifacts.  */
  set_program_name (argv[0]);

  memset (&sa, 0, sizeof sa);
  sa.sa_handler = SIG_IGN;
  sa.sa_flags = SA_RESTART;
  sigaction (SIGPIPE, &sa, NULL);

  /* Various initialization. */
  init_dir_caches ();

  g = guestfs_create ();
  if (g == NULL) {
    fprintf (stderr, _("guestfs_create: failed to create handle\n"));
    exit (EXIT_FAILURE);
  }

  guestfs_set_recovery_proc (g, 0);

  ADD_FUSE_ARG (program_name);
  /* MUST be single-threaded.  You cannot have two threads accessing the
   * same libguestfs handle, and opening more than one handle is likely
   * to be very expensive.
   */
  ADD_FUSE_ARG ("-s");

  for (;;) {
    c = getopt_long (argc, argv, options, long_options, &option_index);
    if (c == -1) break;

    switch (c) {
    case 0:			/* options which are long only */
      if (STREQ (long_options[option_index].name, "dir-cache-timeout"))
        dir_cache_timeout = atoi (optarg);
      else if (STREQ (long_options[option_index].name, "fuse-help"))
        fuse_help ();
      else if (STREQ (long_options[option_index].name, "selinux"))
        guestfs_set_selinux (g, 1);
      else if (STREQ (long_options[option_index].name, "format")) {
        if (!optarg || STREQ (optarg, ""))
          format = NULL;
        else
          format = optarg;
      } else if (STREQ (long_options[option_index].name, "keys-from-stdin")) {
        keys_from_stdin = 1;
      } else if (STREQ (long_options[option_index].name, "echo-keys")) {
        echo_keys = 1;
      } else if (STREQ (long_options[option_index].name, "live")) {
        live = 1;
      } else {
        fprintf (stderr, _("%s: unknown long option: %s (%d)\n"),
                 program_name, long_options[option_index].name, option_index);
        exit (EXIT_FAILURE);
      }
      break;

    case 'a':
      OPTION_a;
      break;

    case 'c':
      OPTION_c;
      break;

    case 'd':
      OPTION_d;
      break;

    case 'i':
      OPTION_i;
      break;

    case 'm':
      OPTION_m;
      break;

    case 'n':
      OPTION_n;
      break;

    case 'o':
      ADD_FUSE_ARG ("-o");
      ADD_FUSE_ARG (optarg);
      break;

    case 'r':
      OPTION_r;
      break;

    case 'v':
      OPTION_v;
      break;

    case 'V':
      OPTION_V;
      break;

    case 'w':
      OPTION_w;
      break;

    case 'x':
      OPTION_x;
      ADD_FUSE_ARG ("-f");
      guestfs_set_recovery_proc (g, 1);
      trace_calls = 1;
      break;

    case HELP_OPTION:
      usage (EXIT_SUCCESS);

    default:
      usage (EXIT_FAILURE);
    }
  }

  /* Check we have the right options. */
  if (!live) {
    if (!drvs || !(mps || inspector)) {
      fprintf (stderr,
               _("%s: must have at least one -a/-d and at least one -m/-i option\n"),
               program_name);
      exit (EXIT_FAILURE);
    }
  } else {
    size_t count_d = 0, count_other = 0;
    struct drv *drv;

    if (read_only) {
      fprintf (stderr,
               _("%s: --live is not compatible with --ro option\n"),
               program_name);
      exit (EXIT_FAILURE);
    }

    if (inspector) {
      fprintf (stderr,
               _("%s: --live is not compatible with -i option\n"),
               program_name);
      exit (EXIT_FAILURE);
    }

    /* --live: make sure there was one -d option and no -a options */
    for (drv = drvs; drv; drv = drv->next) {
      if (drv->type == drv_d)
        count_d++;
      else
        count_other++;
    }

    if (count_d != 1) {
      fprintf (stderr,
               _("%s: with --live, you must use exactly one -d option\n"),
               program_name);
      exit (EXIT_FAILURE);
    }

    if (count_other != 0) {
      fprintf (stderr,
               _("%s: --live is not compatible with -a option\n"),
               program_name);
      exit (EXIT_FAILURE);
    }
  }

  /* We'd better have a mountpoint. */
  if (optind+1 != argc) {
    fprintf (stderr,
             _("%s: you must specify a mountpoint in the host filesystem\n"),
             program_name);
    exit (EXIT_FAILURE);
  }

  /* Do the guest drives and mountpoints. */
  add_drives (drvs, 'a');
  if (guestfs_launch (g) == -1)
    exit (EXIT_FAILURE);
  if (inspector)
    inspect_mount ();
  mount_mps (mps);

  free_drives (drvs);
  free_mps (mps);

  /* FUSE example does this, not clear if it's necessary, but ... */
  if (guestfs_umask (g, 0) == -1)
    exit (EXIT_FAILURE);

  /* At the last minute, remove the libguestfs error handler.  In code
   * above this point, the default error handler has been used which
   * sends all errors to stderr.  Now before entering FUSE itself we
   * want to silence errors so we can convert them (see error()
   * function above).
   */
  guestfs_set_error_handler (g, NULL, NULL);

  /* Finish off FUSE args. */
  ADD_FUSE_ARG (argv[optind]);

  /*
    It says about the line containing the for-statement:
    error: assuming signed overflow does not occur when simplifying conditional to constant [-Wstrict-overflow]

  if (verbose) {
    fprintf (stderr, "guestmount: invoking FUSE with args [");
    for (i = 0; i < fuse_argc; ++i) {
      if (i > 0) fprintf (stderr, ", ");
      fprintf (stderr, "%s", fuse_argv[i]);
    }
    fprintf (stderr, "]\n");
  }
  */

  r = fuse_main (fuse_argc, (char **) fuse_argv, &fg_operations, NULL);

  /* Cleanup. */
  guestfs_close (g);
  free_dir_caches ();

  exit (r == 0 ? EXIT_SUCCESS : EXIT_FAILURE);
}
示例#7
0
int
main (int argc, char *argv[])
{
  setlocale (LC_ALL, "");
  bindtextdomain (PACKAGE, LOCALEBASEDIR);
  textdomain (PACKAGE);

  /* We use random(3) below. */
  srandom (time (NULL));

  enum { HELP_OPTION = CHAR_MAX + 1 };

  static const char *options = "a:b:c:d:e:m:vVx";
  static const struct option long_options[] = {
    { "add", 1, 0, 'a' },
    { "backup", 1, 0, 'b' },
    { "connect", 1, 0, 'c' },
    { "domain", 1, 0, 'd' },
    { "echo-keys", 0, 0, 0 },
    { "edit", 1, 0, 'e' },
    { "expr", 1, 0, 'e' },
    { "format", 2, 0, 0 },
    { "help", 0, 0, HELP_OPTION },
    { "keys-from-stdin", 0, 0, 0 },
    { "long-options", 0, 0, 0 },
    { "mount", 1, 0, 'm' },
    { "short-options", 0, 0, 0 },
    { "verbose", 0, 0, 'v' },
    { "version", 0, 0, 'V' },
    { 0, 0, 0, 0 }
  };
  struct drv *drvs = NULL;
  struct drv *drv;
  struct mp *mps = NULL;
  struct mp *mp;
  char *p;
  const char *format = NULL;
  bool format_consumed = true;
  int c;
  int option_index;

  g = guestfs_create ();
  if (g == NULL) {
    fprintf (stderr, _("guestfs_create: failed to create handle\n"));
    exit (EXIT_FAILURE);
  }

  for (;;) {
    c = getopt_long (argc, argv, options, long_options, &option_index);
    if (c == -1) break;

    switch (c) {
    case 0:			/* options which are long only */
      if (STREQ (long_options[option_index].name, "long-options"))
        display_long_options (long_options);
      else if (STREQ (long_options[option_index].name, "short-options"))
        display_short_options (options);
      else if (STREQ (long_options[option_index].name, "keys-from-stdin")) {
        keys_from_stdin = 1;
      } else if (STREQ (long_options[option_index].name, "echo-keys")) {
        echo_keys = 1;
      } else if (STREQ (long_options[option_index].name, "format")) {
        OPTION_format;
      } else {
        fprintf (stderr, _("%s: unknown long option: %s (%d)\n"),
                 guestfs_int_program_name,
                 long_options[option_index].name, option_index);
        exit (EXIT_FAILURE);
      }
      break;

    case 'a':
      OPTION_a;
      break;

    case 'b':
      if (backup_extension) {
        fprintf (stderr, _("%s: -b option given multiple times\n"),
                 guestfs_int_program_name);
        exit (EXIT_FAILURE);
      }
      backup_extension = optarg;
      break;

    case 'c':
      OPTION_c;
      break;

    case 'd':
      OPTION_d;
      break;

    case 'e':
      if (perl_expr) {
        fprintf (stderr, _("%s: -e option given multiple times\n"),
                 guestfs_int_program_name);
        exit (EXIT_FAILURE);
      }
      perl_expr = optarg;
      break;

    case 'm':
      OPTION_m;
      inspector = 0;
      break;

    case 'v':
      OPTION_v;
      break;

    case 'V':
      OPTION_V;
      break;

    case 'x':
      OPTION_x;
      break;

    case HELP_OPTION:
      usage (EXIT_SUCCESS);

    default:
      usage (EXIT_FAILURE);
    }
  }

  /* Old-style syntax?  There were no -a or -d options in the old
   * virt-edit which is how we detect this.
   */
  if (drvs == NULL) {
    /* argc - 1 because last parameter is the single filename. */
    while (optind < argc - 1) {
      if (strchr (argv[optind], '/') ||
          access (argv[optind], F_OK) == 0) { /* simulate -a option */
        drv = calloc (1, sizeof (struct drv));
        if (!drv) {
          perror ("calloc");
          exit (EXIT_FAILURE);
        }
        drv->type = drv_a;
        drv->a.filename = strdup (argv[optind]);
        if (!drv->a.filename) {
          perror ("strdup");
          exit (EXIT_FAILURE);
        }
        drv->next = drvs;
        drvs = drv;
      } else {                  /* simulate -d option */
        drv = calloc (1, sizeof (struct drv));
        if (!drv) {
          perror ("calloc");
          exit (EXIT_FAILURE);
        }
        drv->type = drv_d;
        drv->d.guest = argv[optind];
        drv->next = drvs;
        drvs = drv;
      }

      optind++;
    }
  }

  /* These are really constants, but they have to be variables for the
   * options parsing code.  Assert here that they have known-good
   * values.
   */
  assert (read_only == 0);
  assert (inspector == 1 || mps != NULL);
  assert (live == 0);

  /* User must specify at least one filename on the command line. */
  if (optind >= argc || argc - optind < 1)
    usage (EXIT_FAILURE);

  CHECK_OPTION_format_consumed;

  /* User must have specified some drives. */
  if (drvs == NULL)
    usage (EXIT_FAILURE);

  /* Add drives. */
  add_drives (drvs, 'a');

  if (guestfs_launch (g) == -1)
    exit (EXIT_FAILURE);

  if (mps != NULL)
    mount_mps (mps);
  else
    inspect_mount ();

  /* Free up data structures, no longer needed after this point. */
  free_drives (drvs);
  free_mps (mps);

  edit_files (argc - optind, &argv[optind]);

  /* Cleanly unmount the disks after editing. */
  if (guestfs_shutdown (g) == -1)
    exit (EXIT_FAILURE);

  guestfs_close (g);

  exit (EXIT_SUCCESS);
}
示例#8
0
int
main (int argc, char *argv[])
{
  /* Set global program name that is not polluted with libtool artifacts.  */
  set_program_name (argv[0]);

  setlocale (LC_ALL, "");
  bindtextdomain (PACKAGE, LOCALEBASEDIR);
  textdomain (PACKAGE);

  enum { HELP_OPTION = CHAR_MAX + 1 };

  static const char *options = "a:c:d:vVx";
  static const struct option long_options[] = {
    { "add", 1, 0, 'a' },
    { "connect", 1, 0, 'c' },
    { "domain", 1, 0, 'd' },
    { "echo-keys", 0, 0, 0 },
    { "format", 2, 0, 0 },
    { "help", 0, 0, HELP_OPTION },
    { "keys-from-stdin", 0, 0, 0 },
    { "verbose", 0, 0, 'v' },
    { "version", 0, 0, 'V' },
    { 0, 0, 0, 0 }
  };
  struct drv *drvs = NULL;
  struct drv *drv;
  const char *format = NULL;
  int c;
  int option_index;

  g = guestfs_create ();
  if (g == NULL) {
    fprintf (stderr, _("guestfs_create: failed to create handle\n"));
    exit (EXIT_FAILURE);
  }

  argv[0] = bad_cast (program_name);

  for (;;) {
    c = getopt_long (argc, argv, options, long_options, &option_index);
    if (c == -1) break;

    switch (c) {
    case 0:			/* options which are long only */
      if (STREQ (long_options[option_index].name, "keys-from-stdin")) {
        keys_from_stdin = 1;
      } else if (STREQ (long_options[option_index].name, "echo-keys")) {
        echo_keys = 1;
      } else if (STREQ (long_options[option_index].name, "format")) {
        if (!optarg || STREQ (optarg, ""))
          format = NULL;
        else
          format = optarg;
      } else {
        fprintf (stderr, _("%s: unknown long option: %s (%d)\n"),
                 program_name, long_options[option_index].name, option_index);
        exit (EXIT_FAILURE);
      }
      break;

    case 'a':
      OPTION_a;
      break;

    case 'c':
      OPTION_c;
      break;

    case 'd':
      OPTION_d;
      break;

    case 'v':
      OPTION_v;
      break;

    case 'V':
      OPTION_V;
      break;

    case 'x':
      OPTION_x;
      break;

    case HELP_OPTION:
      usage (EXIT_SUCCESS);

    default:
      usage (EXIT_FAILURE);
    }
  }

  /* Old-style syntax?  There were no -a or -d options in the old
   * virt-cat which is how we detect this.
   */
  if (drvs == NULL) {
    /* argc - 1 because last parameter is the single filename. */
    while (optind < argc - 1) {
      if (strchr (argv[optind], '/') ||
          access (argv[optind], F_OK) == 0) { /* simulate -a option */
        drv = calloc (1, sizeof (struct drv));
        if (!drv) {
          perror ("malloc");
          exit (EXIT_FAILURE);
        }
        drv->type = drv_a;
        drv->a.filename = argv[optind];
        drv->next = drvs;
        drvs = drv;
      } else {                  /* simulate -d option */
        drv = calloc (1, sizeof (struct drv));
        if (!drv) {
          perror ("malloc");
          exit (EXIT_FAILURE);
        }
        drv->type = drv_d;
        drv->d.guest = argv[optind];
        drv->next = drvs;
        drvs = drv;
      }

      optind++;
    }
  }

  /* These are really constants, but they have to be variables for the
   * options parsing code.  Assert here that they have known-good
   * values.
   */
  assert (read_only == 1);
  assert (inspector == 1);
  assert (live == 0);

  /* User must specify at least one filename on the command line. */
  if (optind >= argc || argc - optind < 1)
    usage (EXIT_FAILURE);

  /* User must have specified some drives. */
  if (drvs == NULL)
    usage (EXIT_FAILURE);

  /* Add drives, inspect and mount.  Note that inspector is always true,
   * and there is no -m option.
   */
  add_drives (drvs, 'a');

  if (guestfs_launch (g) == -1)
    exit (EXIT_FAILURE);

  inspect_mount ();

  /* Free up data structures, no longer needed after this point. */
  free_drives (drvs);

  unsigned errors = 0;
  int windows;
  char *root, **roots;

  /* Get root mountpoint.  See: fish/inspect.c:inspect_mount */
  roots = guestfs_inspect_get_roots (g);
  assert (roots);
  assert (roots[0] != NULL);
  assert (roots[1] == NULL);
  root = roots[0];
  free (roots);

  /* Windows?  Special handling is required. */
  windows = is_windows (g, root);

  for (; optind < argc; optind++) {
    char *filename_to_free = NULL;
    const char *filename = argv[optind];

    if (windows) {
      filename = filename_to_free = windows_path (g, root, filename);
      if (filename == NULL) {
        errors++;
        continue;
      }
    }

    if (guestfs_download (g, filename, "/dev/stdout") == -1)
      errors++;

    free (filename_to_free);
  }

  free (root);

  guestfs_close (g);

  exit (errors == 0 ? EXIT_SUCCESS : EXIT_FAILURE);
}