1 /* filesys.h - abstract filesystem interface */ 2 /* 3 * GRUB -- GRand Unified Bootloader 4 * Copyright (C) 1999,2000,2001,2004 Free Software Foundation, Inc. 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License as published by 8 * the Free Software Foundation; either version 2 of the License, or 9 * (at your option) any later version. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 * 16 * You should have received a copy of the GNU General Public License 17 * along with this program; if not, write to the Free Software 18 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 19 */ 20 21 #include "pc_slice.h" 22 23 #ifdef FSYS_FFS 24 #define FSYS_FFS_NUM 1 25 int ffs_mount (void); 26 int ffs_read (char *buf, int len); 27 int ffs_dir (char *dirname); 28 int ffs_embed (int *start_sector, int needed_sectors); 29 #else 30 #define FSYS_FFS_NUM 0 31 #endif 32 33 #ifdef FSYS_UFS2 34 #define FSYS_UFS2_NUM 1 35 int ufs2_mount (void); 36 int ufs2_read (char *buf, int len); 37 int ufs2_dir (char *dirname); 38 int ufs2_embed (int *start_sector, int needed_sectors); 39 #else 40 #define FSYS_UFS2_NUM 0 41 #endif 42 43 #ifdef FSYS_FAT 44 #define FSYS_FAT_NUM 1 45 int fat_mount (void); 46 int fat_read (char *buf, int len); 47 int fat_dir (char *dirname); 48 #else 49 #define FSYS_FAT_NUM 0 50 #endif 51 52 #ifdef FSYS_EXT2FS 53 #define FSYS_EXT2FS_NUM 1 54 int ext2fs_mount (void); 55 int ext2fs_read (char *buf, int len); 56 int ext2fs_dir (char *dirname); 57 #else 58 #define FSYS_EXT2FS_NUM 0 59 #endif 60 61 #ifdef FSYS_MINIX 62 #define FSYS_MINIX_NUM 1 63 int minix_mount (void); 64 int minix_read (char *buf, int len); 65 int minix_dir (char *dirname); 66 #else 67 #define FSYS_MINIX_NUM 0 68 #endif 69 70 #ifdef FSYS_REISERFS 71 #define FSYS_REISERFS_NUM 1 72 int reiserfs_mount (void); 73 int reiserfs_read (char *buf, int len); 74 int reiserfs_dir (char *dirname); 75 int reiserfs_embed (int *start_sector, int needed_sectors); 76 #else 77 #define FSYS_REISERFS_NUM 0 78 #endif 79 80 #ifdef FSYS_VSTAFS 81 #define FSYS_VSTAFS_NUM 1 82 int vstafs_mount (void); 83 int vstafs_read (char *buf, int len); 84 int vstafs_dir (char *dirname); 85 #else 86 #define FSYS_VSTAFS_NUM 0 87 #endif 88 89 #ifdef FSYS_JFS 90 #define FSYS_JFS_NUM 1 91 int jfs_mount (void); 92 int jfs_read (char *buf, int len); 93 int jfs_dir (char *dirname); 94 int jfs_embed (int *start_sector, int needed_sectors); 95 #else 96 #define FSYS_JFS_NUM 0 97 #endif 98 99 #ifdef FSYS_XFS 100 #define FSYS_XFS_NUM 1 101 int xfs_mount (void); 102 int xfs_read (char *buf, int len); 103 int xfs_dir (char *dirname); 104 #else 105 #define FSYS_XFS_NUM 0 106 #endif 107 108 #ifdef FSYS_TFTP 109 #define FSYS_TFTP_NUM 1 110 int tftp_mount (void); 111 int tftp_read (char *buf, int len); 112 int tftp_dir (char *dirname); 113 void tftp_close (void); 114 #else 115 #define FSYS_TFTP_NUM 0 116 #endif 117 118 #ifdef FSYS_ISO9660 119 #define FSYS_ISO9660_NUM 1 120 int iso9660_mount (void); 121 int iso9660_read (char *buf, int len); 122 int iso9660_dir (char *dirname); 123 #else 124 #define FSYS_ISO9660_NUM 0 125 #endif 126 127 #ifndef NUM_FSYS 128 #define NUM_FSYS \ 129 (FSYS_FFS_NUM + FSYS_FAT_NUM + FSYS_EXT2FS_NUM + FSYS_MINIX_NUM \ 130 + FSYS_REISERFS_NUM + FSYS_VSTAFS_NUM + FSYS_JFS_NUM + FSYS_XFS_NUM \ 131 + FSYS_TFTP_NUM + FSYS_ISO9660_NUM + FSYS_UFS2_NUM) 132 #endif 133 134 /* defines for the block filesystem info area */ 135 #ifndef NO_BLOCK_FILES 136 #define BLK_CUR_FILEPOS (*((int*)FSYS_BUF)) 137 #define BLK_CUR_BLKLIST (*((int*)(FSYS_BUF+4))) 138 #define BLK_CUR_BLKNUM (*((int*)(FSYS_BUF+8))) 139 #define BLK_MAX_ADDR (FSYS_BUF+0x7FF9) 140 #define BLK_BLKSTART(l) (*((int*)l)) 141 #define BLK_BLKLENGTH(l) (*((int*)(l+4))) 142 #define BLK_BLKLIST_START (FSYS_BUF+12) 143 #define BLK_BLKLIST_INC_VAL 8 144 #endif /* NO_BLOCK_FILES */ 145 146 /* this next part is pretty ugly, but it keeps it in one place! */ 147 148 struct fsys_entry 149 { 150 char *name; 151 int (*mount_func) (void); 152 int (*read_func) (char *buf, int len); 153 int (*dir_func) (char *dirname); 154 void (*close_func) (void); 155 int (*embed_func) (int *start_sector, int needed_sectors); 156 }; 157 158 #ifdef STAGE1_5 159 # define print_possibilities 0 160 #else 161 extern int print_possibilities; 162 #endif 163 164 extern int fsmax; 165 extern struct fsys_entry fsys_table[NUM_FSYS + 1]; 166
