| /* |
| * GRUB -- GRand Unified Bootloader |
| * Copyright (C) 1996 Erich Boleyn <erich@uruk.org> |
| * Copyright (C) 1999, 2000 Free Software Foundation, Inc. |
| * |
| * This program 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 this program; if not, write to the Free Software |
| * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| */ |
| |
| #ifndef _PC_SLICE_H |
| #define _PC_SLICE_H |
| |
| /* |
| * These define the basic PC MBR sector characteristics |
| */ |
| |
| #define PC_MBR_SECTOR 0 |
| |
| #define PC_MBR_SIG_OFFSET 510 |
| #define PC_MBR_SIGNATURE 0xaa55 |
| |
| #define PC_SLICE_OFFSET 446 |
| #define PC_SLICE_MAX 4 |
| |
| |
| /* |
| * Defines to guarantee structural alignment. |
| */ |
| |
| #define PC_MBR_CHECK_SIG(mbr_ptr) \ |
| ( *( (unsigned short *) (((int) mbr_ptr) + PC_MBR_SIG_OFFSET) ) \ |
| == PC_MBR_SIGNATURE ) |
| |
| #define PC_MBR_SIG(mbr_ptr) \ |
| ( *( (unsigned short *) (((int) mbr_ptr) + PC_MBR_SIG_OFFSET) ) ) |
| |
| #define PC_SLICE_FLAG(mbr_ptr, part) \ |
| ( *( (unsigned char *) (((int) mbr_ptr) + PC_SLICE_OFFSET \ |
| + (part << 4)) ) ) |
| |
| #define PC_SLICE_HEAD(mbr_ptr, part) \ |
| ( *( (unsigned char *) (((int) mbr_ptr) + PC_SLICE_OFFSET + 1 \ |
| + (part << 4)) ) ) |
| |
| #define PC_SLICE_SEC(mbr_ptr, part) \ |
| ( *( (unsigned char *) (((int) mbr_ptr) + PC_SLICE_OFFSET + 2 \ |
| + (part << 4)) ) ) |
| |
| #define PC_SLICE_CYL(mbr_ptr, part) \ |
| ( *( (unsigned char *) (((int) mbr_ptr) + PC_SLICE_OFFSET + 3 \ |
| + (part << 4)) ) ) |
| |
| #define PC_SLICE_TYPE(mbr_ptr, part) \ |
| ( *( (unsigned char *) (((int) mbr_ptr) + PC_SLICE_OFFSET + 4 \ |
| + (part << 4)) ) ) |
| |
| #define PC_SLICE_EHEAD(mbr_ptr, part) \ |
| ( *( (unsigned char *) (((int) mbr_ptr) + PC_SLICE_OFFSET + 5 \ |
| + (part << 4)) ) ) |
| |
| #define PC_SLICE_ESEC(mbr_ptr, part) \ |
| ( *( (unsigned char *) (((int) mbr_ptr) + PC_SLICE_OFFSET + 6 \ |
| + (part << 4)) ) ) |
| |
| #define PC_SLICE_ECYL(mbr_ptr, part) \ |
| ( *( (unsigned char *) (((int) mbr_ptr) + PC_SLICE_OFFSET + 7 \ |
| + (part << 4)) ) ) |
| |
| #define PC_SLICE_START(mbr_ptr, part) \ |
| ( *( (unsigned long *) (((int) mbr_ptr) + PC_SLICE_OFFSET + 8 \ |
| + (part << 4)) ) ) |
| |
| #define PC_SLICE_LENGTH(mbr_ptr, part) \ |
| ( *( (unsigned long *) (((int) mbr_ptr) + PC_SLICE_OFFSET + 12 \ |
| + (part << 4)) ) ) |
| |
| |
| /* |
| * PC flag types are defined here. |
| */ |
| |
| #define PC_SLICE_FLAG_NONE 0 |
| #define PC_SLICE_FLAG_BOOTABLE 0x80 |
| |
| /* |
| * Known PC partition types are defined here. |
| */ |
| |
| /* This is not a flag actually, but used as if it were a flag. */ |
| #define PC_SLICE_TYPE_HIDDEN_FLAG 0x10 |
| |
| #define PC_SLICE_TYPE_NONE 0 |
| #define PC_SLICE_TYPE_FAT12 1 |
| #define PC_SLICE_TYPE_FAT16_LT32M 4 |
| #define PC_SLICE_TYPE_EXTENDED 5 |
| #define PC_SLICE_TYPE_FAT16_GT32M 6 |
| #define PC_SLICE_TYPE_FAT32 0xb |
| #define PC_SLICE_TYPE_FAT32_LBA 0xc |
| #define PC_SLICE_TYPE_FAT16_LBA 0xe |
| #define PC_SLICE_TYPE_WIN95_EXTENDED 0xf |
| #define PC_SLICE_TYPE_MINIX 0x80 |
| #define PC_SLICE_TYPE_EXT2FS 0x83 |
| |
| /* For convinience. */ |
| /* Check if TYPE is a FAT partition type. Clear the hidden flag before |
| the check, to allow the user to mount a hidden partition in GRUB. */ |
| #define IS_PC_SLICE_TYPE_FAT(type) \ |
| ({ int _type = (type) & ~PC_SLICE_TYPE_HIDDEN_FLAG; \ |
| _type == PC_SLICE_TYPE_FAT12 \ |
| || _type == PC_SLICE_TYPE_FAT16_LT32M \ |
| || _type == PC_SLICE_TYPE_FAT16_GT32M \ |
| || _type == PC_SLICE_TYPE_FAT16_LBA \ |
| || _type == PC_SLICE_TYPE_FAT32 \ |
| || _type == PC_SLICE_TYPE_FAT32_LBA; }) |
| |
| #define IS_PC_SLICE_TYPE_EXTENDED(type) \ |
| (((type) == PC_SLICE_TYPE_EXTENDED) \ |
| || ((type) == PC_SLICE_TYPE_WIN95_EXTENDED)) |
| |
| /* these ones are special, as they use their own partitioning scheme |
| to subdivide the PC partitions from there. */ |
| #define PC_SLICE_TYPE_FREEBSD 0xa5 |
| #define PC_SLICE_TYPE_OPENBSD 0xa6 |
| #define PC_SLICE_TYPE_NETBSD 0xa9 |
| |
| /* For convenience. */ |
| #define IS_PC_SLICE_TYPE_BSD_WITH_FS(type,fs) \ |
| ((type) == (PC_SLICE_TYPE_FREEBSD | ((fs) << 8)) \ |
| || (type) == (PC_SLICE_TYPE_OPENBSD | ((fs) << 8)) \ |
| || (type) == (PC_SLICE_TYPE_NETBSD | (fs) << 8)) |
| |
| #define IS_PC_SLICE_TYPE_BSD(type) IS_PC_SLICE_TYPE_BSD_WITH_FS(type,0) |
| |
| /* |
| * *BSD-style disklabel & partition definitions. |
| * |
| * This is a subdivided slice of type 'PC_SLICE_TYPE_BSD', so all of |
| * these, except where noted, are relative to the slice in question. |
| */ |
| |
| #define BSD_LABEL_SECTOR 1 |
| #define BSD_LABEL_MAGIC 0x82564557 |
| |
| #define BSD_LABEL_MAG_OFFSET 0 |
| #define BSD_LABEL_MAG2_OFFSET 132 |
| #define BSD_LABEL_NPARTS_OFFSET 138 |
| #define BSD_LABEL_NPARTS_MAX 8 |
| |
| #define BSD_PART_OFFSET 148 |
| |
| |
| /* |
| * Defines to guarantee structural alignment. |
| */ |
| |
| #define BSD_LABEL_CHECK_MAG(l_ptr) \ |
| ( *( (unsigned long *) (((int) l_ptr) + BSD_LABEL_MAG_OFFSET) ) \ |
| == ( (unsigned long) BSD_LABEL_MAGIC ) ) |
| |
| #define BSD_LABEL_MAG(l_ptr) \ |
| ( *( (unsigned long *) (((int) l_ptr) + BSD_LABEL_MAG_OFFSET) ) ) |
| |
| #define BSD_LABEL_DTYPE(l_ptr) \ |
| ( *( (unsigned short *) (((int) l_ptr) + BSD_LABEL_MAG_OFFSET + 4) ) ) |
| |
| #define BSD_LABEL_NPARTS(l_ptr) \ |
| ( *( (unsigned short *) (((int) l_ptr) + BSD_LABEL_NPARTS_OFFSET) ) ) |
| |
| #define BSD_PART_LENGTH(l_ptr, part) \ |
| ( *( (unsigned long *) (((int) l_ptr) + BSD_PART_OFFSET \ |
| + (part << 4)) ) ) |
| |
| #define BSD_PART_START(l_ptr, part) \ |
| ( *( (unsigned long *) (((int) l_ptr) + BSD_PART_OFFSET + 4 \ |
| + (part << 4)) ) ) |
| |
| #define BSD_PART_FRAG_SIZE(l_ptr, part) \ |
| ( *( (unsigned long *) (((int) l_ptr) + BSD_PART_OFFSET + 8 \ |
| + (part << 4)) ) ) |
| |
| #define BSD_PART_TYPE(l_ptr, part) \ |
| ( *( (unsigned char *) (((int) l_ptr) + BSD_PART_OFFSET + 12 \ |
| + (part << 4)) ) ) |
| |
| #define BSD_PART_FRAGS_PER_BLOCK(l_ptr, part) \ |
| ( *( (unsigned char *) (((int) l_ptr) + BSD_PART_OFFSET + 13 \ |
| + (part << 4)) ) ) |
| |
| #define BSD_PART_EXTRA(l_ptr, part) \ |
| ( *( (unsigned short *) (((int) l_ptr) + BSD_PART_OFFSET + 14 \ |
| + (part << 4)) ) ) |
| |
| |
| /* possible values for the "DISKTYPE"... all essentially irrelevant |
| except for DTYPE_SCSI */ |
| #define DTYPE_SMD 1 /* SMD, XSMD; VAX hp/up */ |
| #define DTYPE_MSCP 2 /* MSCP */ |
| #define DTYPE_DEC 3 /* other DEC (rk, rl) */ |
| #define DTYPE_SCSI 4 /* SCSI */ |
| #define DTYPE_ESDI 5 /* ESDI interface */ |
| #define DTYPE_ST506 6 /* ST506 etc. */ |
| #define DTYPE_HPIB 7 /* CS/80 on HP-IB */ |
| #define DTYPE_HPFL 8 /* HP Fiber-link */ |
| #define DTYPE_FLOPPY 10 /* floppy */ |
| |
| |
| /* possible values for the *BSD-style partition type */ |
| #define FS_UNUSED 0 /* unused */ |
| #define FS_SWAP 1 /* swap */ |
| #define FS_V6 2 /* Sixth Edition */ |
| #define FS_V7 3 /* Seventh Edition */ |
| #define FS_SYSV 4 /* System V */ |
| #define FS_V71K 5 /* V7 with 1K blocks (4.1, 2.9) */ |
| #define FS_V8 6 /* Eighth Edition, 4K blocks */ |
| #define FS_BSDFFS 7 /* 4.2BSD fast file system */ |
| #define FS_MSDOS 8 /* MSDOS file system */ |
| #define FS_BSDLFS 9 /* 4.4BSD log-structured file system */ |
| #define FS_OTHER 10 /* in use, but unknown/unsupported */ |
| #define FS_HPFS 11 /* OS/2 high-performance file system */ |
| #define FS_ISO9660 12 /* ISO 9660, normally CD-ROM */ |
| #define FS_BOOT 13 /* partition contains bootstrap */ |
| |
| |
| #endif /* _PC_SLICE_H */ |