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_set_blk_dev_full(block_dev_desc_t * const rbdd, disk_partition_t * const p); 78 extern int ext2fs_ls (char *dirname); 79 extern int ext2fs_open (char *filename); 80 extern int ext2fs_read (char *buf, unsigned len); 81 extern int ext2fs_mount (unsigned part_length); 82 extern int ext2fs_close(void); 83