/* vi: set sw=4 ts=4: *//* * probe.h - constants and on-disk structures for extracting device data * * Copyright (C) 1999 by Andries Brouwer * Copyright (C) 1999, 2000, 2003 by Theodore Ts'o * Copyright (C) 2001 by Andreas Dilger * * %Begin-Header% * This file may be redistributed under the terms of the * GNU Lesser General Public License. * %End-Header% */#ifndef _BLKID_PROBE_H#define _BLKID_PROBE_H#include <linux/types.h>struct blkid_magic;typedef int (*blkid_probe_t)(int fd, blkid_cache cache, blkid_dev dev,			     const struct blkid_magic *id, unsigned char *buf);struct blkid_magic {	const char	*bim_type;	/* type name for this magic */	long		bim_kboff;	/* kilobyte offset of superblock */	unsigned	bim_sboff;	/* byte offset within superblock */	unsigned	bim_len;	/* length of magic */	const char	*bim_magic;	/* magic string */	blkid_probe_t	bim_probe;	/* probe function */};/* * Structures for each of the content types we want to extract information * from.  We do not necessarily need the magic field here, because we have * already identified the content type before we get this far.  It may still * be useful if there are probe functions which handle multiple content types. */struct ext2_super_block {	__u32		s_inodes_count;	__u32		s_blocks_count;	__u32		s_r_blocks_count;	__u32		s_free_blocks_count;	__u32		s_free_inodes_count;	__u32		s_first_data_block;	__u32		s_log_block_size;	__u32		s_dummy3[7];	unsigned char	s_magic[2];	__u16		s_state;	__u32		s_dummy5[8];	__u32		s_feature_compat;	__u32		s_feature_incompat;	__u32		s_feature_ro_compat;	unsigned char   s_uuid[16];	char	   s_volume_name[16];};#define EXT3_FEATURE_COMPAT_HAS_JOURNAL		0x00000004#define EXT3_FEATURE_INCOMPAT_RECOVER		0x00000004#define EXT3_FEATURE_INCOMPAT_JOURNAL_DEV	0x00000008struct xfs_super_block {	unsigned char	xs_magic[4];	__u32		xs_blocksize;	__u64		xs_dblocks;	__u64		xs_rblocks;	__u32		xs_dummy1[2];	unsigned char	xs_uuid[16];	__u32		xs_dummy2[15];	char		xs_fname[12];	__u32		xs_dummy3[2];	__u64		xs_icount;	__u64		xs_ifree;	__u64		xs_fdblocks;};struct reiserfs_super_block {	__u32		rs_blocks_count;	__u32		rs_free_blocks;	__u32		rs_root_block;	__u32		rs_journal_block;	__u32		rs_journal_dev;	__u32		rs_orig_journal_size;	__u32		rs_dummy2[5];	__u16		rs_blocksize;	__u16		rs_dummy3[3];	unsigned char	rs_magic[12];	__u32		rs_dummy4[5];	unsigned char	rs_uuid[16];	char		rs_label[16];};struct jfs_super_block {	unsigned char	js_magic[4];	__u32		js_version;	__u64		js_size;	__u32		js_bsize;	__u32		js_dummy1;	__u32		js_pbsize;	__u32		js_dummy2[27];	unsigned char	js_uuid[16];	unsigned char	js_label[16];	unsigned char	js_loguuid[16];};struct romfs_super_block {	unsigned char	ros_magic[8];	__u32		ros_dummy1[2];	unsigned char	ros_volume[16];};struct cramfs_super_block {	__u8		magic[4];	__u32		size;	__u32		flags;	__u32		future;	__u8		signature[16];	struct cramfs_info {		__u32		crc;		__u32		edition;		__u32		blocks;		__u32		files;	} info;	__u8		name[16];};struct swap_id_block {/*	unsigned char	sws_boot[1024]; */	__u32		sws_version;	__u32		sws_lastpage;	__u32		sws_nrbad;	unsigned char	sws_uuid[16];	char		sws_volume[16];	unsigned char	sws_pad[117];	__u32		sws_badpg;};/* Yucky misaligned values */struct vfat_super_block {/* 00*/	unsigned char	vs_ignored[3];/* 03*/	unsigned char	vs_sysid[8];/* 0b*/	unsigned char	vs_sector_size[2];/* 0d*/	__u8		vs_cluster_size;/* 0e*/	__u16		vs_reserved;/* 10*/	__u8		vs_fats;/* 11*/	unsigned char	vs_dir_entries[2];/* 13*/	unsigned char	vs_sectors[2];/* 15*/	unsigned char	vs_media;/* 16*/	__u16		vs_fat_length;/* 18*/	__u16		vs_secs_track;/* 1a*/	__u16		vs_heads;/* 1c*/	__u32		vs_hidden;/* 20*/	__u32		vs_total_sect;/* 24*/	__u32		vs_fat32_length;/* 28*/	__u16		vs_flags;/* 2a*/	__u8		vs_version[2];/* 2c*/	__u32		vs_root_cluster;/* 30*/	__u16		vs_insfo_sector;/* 32*/	__u16		vs_backup_boot;/* 34*/	__u16		vs_reserved2[6];/* 40*/	unsigned char	vs_unknown[3];/* 43*/	unsigned char	vs_serno[4];/* 47*/	char		vs_label[11];/* 52*/	unsigned char   vs_magic[8];/* 5a*/	unsigned char	vs_dummy2[164];/*1fe*/	unsigned char	vs_pmagic[2];};/* Yucky misaligned values */struct msdos_super_block {/* 00*/	unsigned char	ms_ignored[3];/* 03*/	unsigned char	ms_sysid[8];/* 0b*/	unsigned char	ms_sector_size[2];/* 0d*/	__u8		ms_cluster_size;/* 0e*/	__u16		ms_reserved;/* 10*/	__u8		ms_fats;/* 11*/	unsigned char	ms_dir_entries[2];/* 13*/	unsigned char	ms_sectors[2];/* 15*/	unsigned char	ms_media;/* 16*/	__u16		ms_fat_length;/* 18*/	__u16		ms_secs_track;/* 1a*/	__u16		ms_heads;/* 1c*/	__u32		ms_hidden;/* 20*/	__u32		ms_total_sect;/* 24*/	unsigned char	ms_unknown[3];/* 27*/	unsigned char	ms_serno[4];/* 2b*/	char		ms_label[11];/* 36*/	unsigned char   ms_magic[8];/* 3d*/	unsigned char	ms_dummy2[192];/*1fe*/	unsigned char	ms_pmagic[2];};struct minix_super_block {	__u16		ms_ninodes;	__u16		ms_nzones;	__u16		ms_imap_blocks;	__u16		ms_zmap_blocks;	__u16		ms_firstdatazone;	__u16		ms_log_zone_size;	__u32		ms_max_size;	unsigned char	ms_magic[2];	__u16		ms_state;	__u32		ms_zones;};struct mdp_superblock_s {	__u32 md_magic;	__u32 major_version;	__u32 minor_version;	__u32 patch_version;	__u32 gvalid_words;	__u32 set_uuid0;	__u32 ctime;	__u32 level;	__u32 size;	__u32 nr_disks;	__u32 raid_disks;	__u32 md_minor;	__u32 not_persistent;	__u32 set_uuid1;	__u32 set_uuid2;	__u32 set_uuid3;};struct hfs_super_block {	char	h_magic[2];	char	h_dummy[18];	__u32	h_blksize;};struct ocfs_volume_header {	unsigned char	minor_version[4];	unsigned char	major_version[4];	unsigned char	signature[128];	char		mount[128];	unsigned char   mount_len[2];};struct ocfs_volume_label {	unsigned char	disk_lock[48];	char		label[64];	unsigned char	label_len[2];	unsigned char  vol_id[16];	unsigned char  vol_id_len[2];};#define ocfsmajor(o) ((__u32)o.major_version[0] \                   + (((__u32) o.major_version[1]) << 8) \                   + (((__u32) o.major_version[2]) << 16) \                   + (((__u32) o.major_version[3]) << 24))#define ocfslabellen(o)	((__u32)o.label_len[0] + (((__u32) o.label_len[1]) << 8))#define ocfsmountlen(o)	((__u32)o.mount_len[0] + (((__u32) o.mount_len[1])<<8))#define OCFS_MAGIC "OracleCFS"struct ocfs2_super_block {	unsigned char  signature[8];	unsigned char  s_dummy1[184];	unsigned char  s_dummy2[80];	char	       s_label[64];	unsigned char  s_uuid[16];};#define OCFS2_MIN_BLOCKSIZE             512#define OCFS2_MAX_BLOCKSIZE             4096#define OCFS2_SUPER_BLOCK_BLKNO         2#define OCFS2_SUPER_BLOCK_SIGNATURE     "OCFSV2"struct oracle_asm_disk_label {	char dummy[32];	char dl_tag[8];	char dl_id[24];};#define ORACLE_ASM_DISK_LABEL_MARKED    "ORCLDISK"#define ORACLE_ASM_DISK_LABEL_OFFSET    32#define ISODCL(from, to) (to - from + 1)struct iso_volume_descriptor {	char type[ISODCL(1,1)]; /* 711 */	char id[ISODCL(2,6)];	char version[ISODCL(7,7)];	char data[ISODCL(8,2048)];};/* * Byte swap functions */#ifdef __GNUC__#define _INLINE_ static __inline__#else				/* For Watcom C */#define _INLINE_ static inline#endifstatic __u16 blkid_swab16(__u16 val);static __u32 blkid_swab32(__u32 val);static __u64 blkid_swab64(__u64 val);#if ((defined __GNUC__) && \     (defined(__i386__) || defined(__i486__) || defined(__i586__)))#define _BLKID_HAVE_ASM_BITOPS__INLINE_ __u32 blkid_swab32(__u32 val){#ifdef EXT2FS_REQUIRE_486	__asm__("bswap %0" : "=r" (val) : "0" (val));#else	__asm__("xchgb %b0,%h0\n\t"	/* swap lower bytes	*/		"rorl $16,%0\n\t"	/* swap words		*/		"xchgb %b0,%h0"		/* swap higher bytes	*/		:"=q" (val)		: "0" (val));#endif	return val;}_INLINE_ __u16 blkid_swab16(__u16 val){	__asm__("xchgb %b0,%h0"		/* swap bytes		*/ \		: "=q" (val) \		:  "0" (val)); \		return val;}_INLINE_ __u64 blkid_swab64(__u64 val){	return blkid_swab32(val >> 32) |	       ( ((__u64)blkid_swab32((__u32)val)) << 32 );}#endif#if !defined(_BLKID_HAVE_ASM_BITOPS_)_INLINE_  __u16 blkid_swab16(__u16 val){	return (val >> 8) | (val << 8);}_INLINE_ __u32 blkid_swab32(__u32 val){	return (val>>24) | ((val>>8) & 0xFF00) |		((val<<8) & 0xFF0000) | (val<<24);}_INLINE_ __u64 blkid_swab64(__u64 val){	return blkid_swab32(val >> 32) |	       ( ((__u64)blkid_swab32((__u32)val)) << 32 );}#endif#if  __BYTE_ORDER == __BIG_ENDIAN#define blkid_le16(x) blkid_swab16(x)#define blkid_le32(x) blkid_swab32(x)#define blkid_le64(x) blkid_swab64(x)#define blkid_be16(x) (x)#define blkid_be32(x) (x)#define blkid_be64(x) (x)#else#define blkid_le16(x) (x)#define blkid_le32(x) (x)#define blkid_le64(x) (x)#define blkid_be16(x) blkid_swab16(x)#define blkid_be32(x) blkid_swab32(x)#define blkid_be64(x) blkid_swab64(x)#endif#undef _INLINE_#endif /* _BLKID_PROBE_H */