include/ext2fs.h

   1 /*
   2  *  GRUB  --  GRand Unified Bootloader
   3  *  Copyright (C) 2000, 2001  Free Software Foundation, Inc.
   4  *
   5  *  (C) Copyright 2003 Sysgo Real-Time Solutions, AG <www.elinos.com>
   6  *  Pavel Bartusek <pba@sysgo.de>
   7  *
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License as published by
  10  *  the Free Software Foundation; either version 2 of the License, or
  11  *  (at your option) any later version.
  12  *
  13  *  This program is distributed in the hope that it will be useful,
  14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *  GNU General Public License for more details.
  17  *
  18  *  You should have received a copy of the GNU General Public License
  19  *  along with this program; if not, write to the Free Software
  20  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  21  */
  22
  23 /* An implementation for the Ext2FS filesystem ported from GRUB.
  24  * Some parts of this code (mainly the structures and defines) are
  25  * from the original ext2 fs code, as found in the linux kernel.
  26  */
  27
  28
  29 #define SECTOR_SIZE             0x200
  30 #define SECTOR_BITS             9
  31
  32 /* Error codes */
  33 typedef enum
  34 {
  35   ERR_NONE = 0,
  36   ERR_BAD_FILENAME,
  37   ERR_BAD_FILETYPE,
  38   ERR_BAD_GZIP_DATA,
  39   ERR_BAD_GZIP_HEADER,
  40   ERR_BAD_PART_TABLE,
  41   ERR_BAD_VERSION,
  42   ERR_BELOW_1MB,
  43   ERR_BOOT_COMMAND,
  44   ERR_BOOT_FAILURE,
  45   ERR_BOOT_FEATURES,
  46   ERR_DEV_FORMAT,
  47   ERR_DEV_VALUES,
  48   ERR_EXEC_FORMAT,
  49   ERR_FILELENGTH,
  50   ERR_FILE_NOT_FOUND,
  51   ERR_FSYS_CORRUPT,
  52   ERR_FSYS_MOUNT,
  53   ERR_GEOM,
  54   ERR_NEED_LX_KERNEL,
  55   ERR_NEED_MB_KERNEL,
  56   ERR_NO_DISK,
  57   ERR_NO_PART,
  58   ERR_NUMBER_PARSING,
  59   ERR_OUTSIDE_PART,
  60   ERR_READ,
  61   ERR_SYMLINK_LOOP,
  62   ERR_UNRECOGNIZED,
  63   ERR_WONT_FIT,
  64   ERR_WRITE,
  65   ERR_BAD_ARGUMENT,
  66   ERR_UNALIGNED,
  67   ERR_PRIVILEGED,
  68   ERR_DEV_NEED_INIT,
  69   ERR_NO_DISK_SPACE,
  70   ERR_NUMBER_OVERFLOW,
  71
  72   MAX_ERR_NUM
  73 } ext2fs_error_t;
  74
  75
  76 extern int ext2fs_set_blk_dev(block_dev_desc_t *rbdd, int part);
  77 extern int ext2fs_ls (char *dirname);
  78 extern int ext2fs_open (char *filename);
  79 extern int ext2fs_read (char *buf, unsigned len);
  80 extern int ext2fs_mount (unsigned part_length);
  81 extern int ext2fs_close(void);