/* grub-probefs.c - probe a filesystem module for a given path *//* *  GRUB  --  GRand Unified Bootloader *  Copyright (C) 2005 Free Software Foundation, Inc. * *  GRUB is free software; you can redistribute it and/or modify *  it under the terms of the GNU General Public License as published by *  the Free Software Foundation; either version 2 of the License, or *  (at your option) any later version. * *  This program is distributed in the hope that it will be useful, *  but WITHOUT ANY WARRANTY; without even the implied warranty of *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the *  GNU General Public License for more details. * *  You should have received a copy of the GNU General Public License *  along with GRUB; if not, write to the Free Software *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */#include <config.h>#include <grub/types.h>#include <grub/util/misc.h>#include <grub/device.h>#include <grub/disk.h>#include <grub/fs.h>#include <grub/partition.h>#include <grub/pc_partition.h>#include <grub/machine/util/biosdisk.h>#include <grub/util/getroot.h>#include <stdio.h>#include <unistd.h>#include <string.h>#include <stdlib.h>#define _GNU_SOURCE	1#include <getopt.h>#ifdef __NetBSD__/* NetBSD uses /boot for its boot block.  */# define DEFAULT_DIRECTORY	"/grub"#else# define DEFAULT_DIRECTORY	"/boot/grub"#endif#define DEFAULT_DEVICE_MAP	DEFAULT_DIRECTORY "/device.map"voidgrub_putchar (int c){  putchar (c);}voidgrub_refresh (void){}static voidprobe (const char *path){  char *device_name;  grub_device_t dev;  grub_fs_t fs;    device_name = grub_guess_root_device (path);  if (! device_name)    {      fprintf (stderr, "cannot find a GRUB device for %s.\n", path);      return;    }  grub_util_info ("opening %s", device_name);  dev = grub_device_open (device_name);  if (! dev)    grub_util_error ("%s", grub_errmsg);  fs = grub_fs_probe (dev);  if (! fs)    grub_util_error ("%s", grub_errmsg);  printf ("%s\n", fs->name);    grub_device_close (dev);  free (device_name);}static struct option options[] =  {    {"device-map", required_argument, 0, 'm'},    {"help", no_argument, 0, 'h'},    {"version", no_argument, 0, 'V'},    {"verbose", no_argument, 0, 'v'},    {0, 0, 0, 0}  };static voidusage (int status){  if (status)    fprintf (stderr,	     "Try ``grub-probefs --help'' for more information.\n");  else    printf ("\Usage: grub-probefs [OPTION]... PATH\n\\n\Probe a filesystem module for a given path.\n\\n\  -m, --device-map=FILE     use FILE as the device map [default=%s]\n\  -h, --help                display this message and exit\n\  -V, --version             print version information and exit\n\  -v, --verbose             print verbose messages\n\\n\Report bugs to <%s>.\n\",	    DEFAULT_DEVICE_MAP, PACKAGE_BUGREPORT);    exit (status);}intmain (int argc, char *argv[]){  char *dev_map = 0;  char *path;    progname = "grub-probefs";    /* Check for options.  */  while (1)    {      int c = getopt_long (argc, argv, "m:hVv", options, 0);            if (c == -1)	break;      else	switch (c)	  {	  case 'm':	    if (dev_map)	      free (dev_map);	    dev_map = xstrdup (optarg);	    break;	  case 'h':	    usage (0);	    break;	  case 'V':	    printf ("%s (%s) %s\n", progname, PACKAGE_NAME, PACKAGE_VERSION);	    return 0;	  case 'v':	    verbosity++;	    break;	  default:	    usage (1);	    break;	  }    }  /* Obtain PATH.  */  if (optind >= argc)    {      fprintf (stderr, "No path is specified.\n");      usage (1);    }  if (optind + 1 != argc)    {      fprintf (stderr, "Unknown extra argument `%s'.\n", argv[optind + 1]);      usage (1);    }  path = argv[optind];    /* Initialize the emulated biosdisk driver.  */  grub_util_biosdisk_init (dev_map ? : DEFAULT_DEVICE_MAP);  grub_pc_partition_map_init ();  /* Initialize filesystems.  */  grub_fat_init ();  grub_ext2_init ();  grub_ufs_init ();  grub_minix_init ();  grub_jfs_init ();  grub_xfs_init ();  /* Do it.  */  probe (path);    /* Free resources.  */  grub_ext2_fini ();  grub_fat_fini ();  grub_ufs_fini ();  grub_minix_fini ();  grub_jfs_fini ();  grub_xfs_fini ();    grub_pc_partition_map_fini ();  grub_util_biosdisk_fini ();    free (dev_map);    return 0;}