| stroese | 084f67c | 2004-12-16 17:33:10 +0000 | [diff] [blame] | 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); |