[net-next-2.6.git] / fs / udf / udf_sb.h

#ifndef __LINUX_UDF_SB_H
#define __LINUX_UDF_SB_H

/* Since UDF 2.01 is ISO 13346 based... */
#define UDF_SUPER_MAGIC			0x15013346

#define UDF_MAX_READ_VERSION		0x0201
#define UDF_MAX_WRITE_VERSION		0x0201

#define UDF_FLAG_USE_EXTENDED_FE	0
#define UDF_VERS_USE_EXTENDED_FE	0x0200
#define UDF_FLAG_USE_STREAMS		1
#define UDF_VERS_USE_STREAMS		0x0200
#define UDF_FLAG_USE_SHORT_AD		2
#define UDF_FLAG_USE_AD_IN_ICB		3
#define UDF_FLAG_USE_FILE_CTIME_EA	4
#define UDF_FLAG_STRICT			5
#define UDF_FLAG_UNDELETE		6
#define UDF_FLAG_UNHIDE			7
#define UDF_FLAG_VARCONV		8
#define UDF_FLAG_NLS_MAP		9
#define UDF_FLAG_UTF8			10

#define UDF_PART_FLAG_UNALLOC_BITMAP	0x0001
#define UDF_PART_FLAG_UNALLOC_TABLE	0x0002
#define UDF_PART_FLAG_FREED_BITMAP	0x0004
#define UDF_PART_FLAG_FREED_TABLE	0x0008
#define UDF_PART_FLAG_READ_ONLY		0x0010
#define UDF_PART_FLAG_WRITE_ONCE	0x0020
#define UDF_PART_FLAG_REWRITABLE	0x0040
#define UDF_PART_FLAG_OVERWRITABLE	0x0080

static inline struct udf_sb_info *UDF_SB(struct super_block *sb)
{
	return sb->s_fs_info;
}

#define UDF_SB_FREE(X)\
{\
	if (UDF_SB(X))\
	{\
		kfree(UDF_SB_PARTMAPS(X));\
		UDF_SB_PARTMAPS(X) = NULL;\
	}\
}

#define UDF_SB_ALLOC_PARTMAPS(X,Y)\
{\
	UDF_SB_PARTMAPS(X) = kmalloc(sizeof(struct udf_part_map) * Y, GFP_KERNEL);\
	if (UDF_SB_PARTMAPS(X) != NULL)\
	{\
		UDF_SB_NUMPARTS(X) = Y;\
		memset(UDF_SB_PARTMAPS(X), 0x00, sizeof(struct udf_part_map) * Y);\
	}\
	else\
	{\
		UDF_SB_NUMPARTS(X) = 0;\
		udf_error(X, __FUNCTION__, "Unable to allocate space for %d partition maps", Y);\
	}\
}

#define UDF_SB_ALLOC_BITMAP(X,Y,Z)\
{\
	int nr_groups = ((UDF_SB_PARTLEN((X),(Y)) + (sizeof(struct spaceBitmapDesc) << 3) +\
		((X)->s_blocksize * 8) - 1) / ((X)->s_blocksize * 8));\
	int size = sizeof(struct udf_bitmap) + (sizeof(struct buffer_head *) * nr_groups);\
	if (size <= PAGE_SIZE)\
		UDF_SB_PARTMAPS(X)[(Y)].Z.s_bitmap = kmalloc(size, GFP_KERNEL);\
	else\
		UDF_SB_PARTMAPS(X)[(Y)].Z.s_bitmap = vmalloc(size);\
	if (UDF_SB_PARTMAPS(X)[(Y)].Z.s_bitmap != NULL)\
	{\
		memset(UDF_SB_PARTMAPS(X)[(Y)].Z.s_bitmap, 0x00, size);\
		UDF_SB_PARTMAPS(X)[(Y)].Z.s_bitmap->s_block_bitmap =\
			(struct buffer_head **)(UDF_SB_PARTMAPS(X)[(Y)].Z.s_bitmap + 1);\
		UDF_SB_PARTMAPS(X)[(Y)].Z.s_bitmap->s_nr_groups = nr_groups;\
	}\
	else\
	{\
		udf_error(X, __FUNCTION__, "Unable to allocate space for bitmap and %d buffer_head pointers", nr_groups);\
	}\
}

#define UDF_SB_FREE_BITMAP(X,Y,Z)\
{\
	int i;\
	int nr_groups = UDF_SB_BITMAP_NR_GROUPS(X,Y,Z);\
	int size = sizeof(struct udf_bitmap) + (sizeof(struct buffer_head *) * nr_groups);\
	for (i=0; i<nr_groups; i++)\
	{\
		if (UDF_SB_BITMAP(X,Y,Z,i))\
			udf_release_data(UDF_SB_BITMAP(X,Y,Z,i));\
	}\
	if (size <= PAGE_SIZE)\
		kfree(UDF_SB_PARTMAPS(X)[Y].Z.s_bitmap);\
	else\
		vfree(UDF_SB_PARTMAPS(X)[Y].Z.s_bitmap);\
}

#define UDF_QUERY_FLAG(X,Y)			( UDF_SB(X)->s_flags & ( 1 << (Y) ) )
#define UDF_SET_FLAG(X,Y)			( UDF_SB(X)->s_flags |= ( 1 << (Y) ) )
#define UDF_CLEAR_FLAG(X,Y)			( UDF_SB(X)->s_flags &= ~( 1 << (Y) ) )

#define UDF_UPDATE_UDFREV(X,Y)			( ((Y) > UDF_SB_UDFREV(X)) ? UDF_SB_UDFREV(X) = (Y) : UDF_SB_UDFREV(X) )

#define UDF_SB_PARTMAPS(X)			( UDF_SB(X)->s_partmaps )
#define UDF_SB_PARTTYPE(X,Y)			( UDF_SB_PARTMAPS(X)[(Y)].s_partition_type )
#define UDF_SB_PARTROOT(X,Y)			( UDF_SB_PARTMAPS(X)[(Y)].s_partition_root )
#define UDF_SB_PARTLEN(X,Y)			( UDF_SB_PARTMAPS(X)[(Y)].s_partition_len )
#define UDF_SB_PARTVSN(X,Y)			( UDF_SB_PARTMAPS(X)[(Y)].s_volumeseqnum )
#define UDF_SB_PARTNUM(X,Y)			( UDF_SB_PARTMAPS(X)[(Y)].s_partition_num )
#define UDF_SB_TYPESPAR(X,Y)			( UDF_SB_PARTMAPS(X)[(Y)].s_type_specific.s_sparing )
#define UDF_SB_TYPEVIRT(X,Y)			( UDF_SB_PARTMAPS(X)[(Y)].s_type_specific.s_virtual )
#define UDF_SB_PARTFUNC(X,Y)			( UDF_SB_PARTMAPS(X)[(Y)].s_partition_func )
#define UDF_SB_PARTFLAGS(X,Y)			( UDF_SB_PARTMAPS(X)[(Y)].s_partition_flags )
#define UDF_SB_BITMAP(X,Y,Z,I)			( UDF_SB_PARTMAPS(X)[(Y)].Z.s_bitmap->s_block_bitmap[I] )
#define UDF_SB_BITMAP_NR_GROUPS(X,Y,Z)		( UDF_SB_PARTMAPS(X)[(Y)].Z.s_bitmap->s_nr_groups )

#define UDF_SB_VOLIDENT(X)			( UDF_SB(X)->s_volident )
#define UDF_SB_NUMPARTS(X)			( UDF_SB(X)->s_partitions )
#define UDF_SB_PARTITION(X)			( UDF_SB(X)->s_partition )
#define UDF_SB_SESSION(X)			( UDF_SB(X)->s_session )
#define UDF_SB_ANCHOR(X)			( UDF_SB(X)->s_anchor )
#define UDF_SB_LASTBLOCK(X)			( UDF_SB(X)->s_lastblock )
#define UDF_SB_LVIDBH(X)			( UDF_SB(X)->s_lvidbh )
#define UDF_SB_LVID(X)				( (struct logicalVolIntegrityDesc *)UDF_SB_LVIDBH(X)->b_data )
#define UDF_SB_LVIDIU(X)			( (struct logicalVolIntegrityDescImpUse *)&(UDF_SB_LVID(X)->impUse[le32_to_cpu(UDF_SB_LVID(X)->numOfPartitions) * 2 * sizeof(uint32_t)/sizeof(uint8_t)]) )

#define UDF_SB_UMASK(X)				( UDF_SB(X)->s_umask )
#define UDF_SB_GID(X)				( UDF_SB(X)->s_gid )
#define UDF_SB_UID(X)				( UDF_SB(X)->s_uid )
#define UDF_SB_RECORDTIME(X)			( UDF_SB(X)->s_recordtime )
#define UDF_SB_SERIALNUM(X)			( UDF_SB(X)->s_serialnum )
#define UDF_SB_UDFREV(X)			( UDF_SB(X)->s_udfrev )
#define UDF_SB_FLAGS(X)				( UDF_SB(X)->s_flags )
#define UDF_SB_VAT(X)				( UDF_SB(X)->s_vat )

#endif /* __LINUX_UDF_SB_H */
Commit	Line	Data
1da177e4 LT	1	#ifndef __LINUX_UDF_SB_H
	2	#define __LINUX_UDF_SB_H
	3
	4	/* Since UDF 2.01 is ISO 13346 based... */
	5	#define UDF_SUPER_MAGIC 0x15013346
	6
	7	#define UDF_MAX_READ_VERSION 0x0201
	8	#define UDF_MAX_WRITE_VERSION 0x0201
	9
	10	#define UDF_FLAG_USE_EXTENDED_FE 0
	11	#define UDF_VERS_USE_EXTENDED_FE 0x0200
	12	#define UDF_FLAG_USE_STREAMS 1
	13	#define UDF_VERS_USE_STREAMS 0x0200
	14	#define UDF_FLAG_USE_SHORT_AD 2
	15	#define UDF_FLAG_USE_AD_IN_ICB 3
	16	#define UDF_FLAG_USE_FILE_CTIME_EA 4
	17	#define UDF_FLAG_STRICT 5
	18	#define UDF_FLAG_UNDELETE 6
	19	#define UDF_FLAG_UNHIDE 7
	20	#define UDF_FLAG_VARCONV 8
	21	#define UDF_FLAG_NLS_MAP 9
	22	#define UDF_FLAG_UTF8 10
	23
	24	#define UDF_PART_FLAG_UNALLOC_BITMAP 0x0001
	25	#define UDF_PART_FLAG_UNALLOC_TABLE 0x0002
	26	#define UDF_PART_FLAG_FREED_BITMAP 0x0004
	27	#define UDF_PART_FLAG_FREED_TABLE 0x0008
	28	#define UDF_PART_FLAG_READ_ONLY 0x0010
	29	#define UDF_PART_FLAG_WRITE_ONCE 0x0020
	30	#define UDF_PART_FLAG_REWRITABLE 0x0040
	31	#define UDF_PART_FLAG_OVERWRITABLE 0x0080
	32
	33	static inline struct udf_sb_info UDF_SB(struct super_block sb)
	34	{
	35	return sb->s_fs_info;
	36	}
	37
	38	#define UDF_SB_FREE(X)\
	39	{\
	40	if (UDF_SB(X))\
	41	{\
f99d49ad	42	kfree(UDF_SB_PARTMAPS(X));\
1da177e4 LT	43	UDF_SB_PARTMAPS(X) = NULL;\
	44	}\
	45	}
	46
	47	#define UDF_SB_ALLOC_PARTMAPS(X,Y)\
	48	{\
	49	UDF_SB_PARTMAPS(X) = kmalloc(sizeof(struct udf_part_map) * Y, GFP_KERNEL);\
	50	if (UDF_SB_PARTMAPS(X) != NULL)\
	51	{\
	52	UDF_SB_NUMPARTS(X) = Y;\
	53	memset(UDF_SB_PARTMAPS(X), 0x00, sizeof(struct udf_part_map) * Y);\
	54	}\
	55	else\
	56	{\
	57	UDF_SB_NUMPARTS(X) = 0;\
	58	udf_error(X, __FUNCTION__, "Unable to allocate space for %d partition maps", Y);\
	59	}\
	60	}
	61
	62	#define UDF_SB_ALLOC_BITMAP(X,Y,Z)\
	63	{\
	64	int nr_groups = ((UDF_SB_PARTLEN((X),(Y)) + (sizeof(struct spaceBitmapDesc) << 3) +\
	65	((X)->s_blocksize * 8) - 1) / ((X)->s_blocksize * 8));\
	66	int size = sizeof(struct udf_bitmap) + (sizeof(struct buffer_head ) nr_groups);\
	67	if (size <= PAGE_SIZE)\
	68	UDF_SB_PARTMAPS(X)[(Y)].Z.s_bitmap = kmalloc(size, GFP_KERNEL);\
	69	else\
	70	UDF_SB_PARTMAPS(X)[(Y)].Z.s_bitmap = vmalloc(size);\
	71	if (UDF_SB_PARTMAPS(X)[(Y)].Z.s_bitmap != NULL)\
	72	{\
	73	memset(UDF_SB_PARTMAPS(X)[(Y)].Z.s_bitmap, 0x00, size);\
	74	UDF_SB_PARTMAPS(X)[(Y)].Z.s_bitmap->s_block_bitmap =\
	75	(struct buffer_head **)(UDF_SB_PARTMAPS(X)[(Y)].Z.s_bitmap + 1);\
	76	UDF_SB_PARTMAPS(X)[(Y)].Z.s_bitmap->s_nr_groups = nr_groups;\
	77	}\
	78	else\
	79	{\
	80	udf_error(X, __FUNCTION__, "Unable to allocate space for bitmap and %d buffer_head pointers", nr_groups);\
	81	}\
	82	}
	83
	84	#define UDF_SB_FREE_BITMAP(X,Y,Z)\
	85	{\
	86	int i;\
	87	int nr_groups = UDF_SB_BITMAP_NR_GROUPS(X,Y,Z);\
	88	int size = sizeof(struct udf_bitmap) + (sizeof(struct buffer_head ) nr_groups);\
	89	for (i=0; i<nr_groups; i++)\
	90	{\
	91	if (UDF_SB_BITMAP(X,Y,Z,i))\
	92	udf_release_data(UDF_SB_BITMAP(X,Y,Z,i));\
	93	}\
	94	if (size <= PAGE_SIZE)\
	95	kfree(UDF_SB_PARTMAPS(X)[Y].Z.s_bitmap);\
	96	else\
	97	vfree(UDF_SB_PARTMAPS(X)[Y].Z.s_bitmap);\
	98	}
	99
	100	#define UDF_QUERY_FLAG(X,Y) ( UDF_SB(X)->s_flags & ( 1 << (Y) ) )
	101	#define UDF_SET_FLAG(X,Y) ( UDF_SB(X)->s_flags \|= ( 1 << (Y) ) )
	102	#define UDF_CLEAR_FLAG(X,Y) ( UDF_SB(X)->s_flags &= ~( 1 << (Y) ) )
	103
	104	#define UDF_UPDATE_UDFREV(X,Y) ( ((Y) > UDF_SB_UDFREV(X)) ? UDF_SB_UDFREV(X) = (Y) : UDF_SB_UDFREV(X) )
	105
	106	#define UDF_SB_PARTMAPS(X) ( UDF_SB(X)->s_partmaps )
107	#define UDF_SB_PARTTYPE(X,Y) ( UDF_SB_PARTMAPS(X)[(Y)].s_partition_type )
108	#define UDF_SB_PARTROOT(X,Y) ( UDF_SB_PARTMAPS(X)[(Y)].s_partition_root )
109	#define UDF_SB_PARTLEN(X,Y) ( UDF_SB_PARTMAPS(X)[(Y)].s_partition_len )
110	#define UDF_SB_PARTVSN(X,Y) ( UDF_SB_PARTMAPS(X)[(Y)].s_volumeseqnum )
111	#define UDF_SB_PARTNUM(X,Y) ( UDF_SB_PARTMAPS(X)[(Y)].s_partition_num )
112	#define UDF_SB_TYPESPAR(X,Y) ( UDF_SB_PARTMAPS(X)[(Y)].s_type_specific.s_sparing )
113	#define UDF_SB_TYPEVIRT(X,Y) ( UDF_SB_PARTMAPS(X)[(Y)].s_type_specific.s_virtual )
114	#define UDF_SB_PARTFUNC(X,Y) ( UDF_SB_PARTMAPS(X)[(Y)].s_partition_func )
115	#define UDF_SB_PARTFLAGS(X,Y) ( UDF_SB_PARTMAPS(X)[(Y)].s_partition_flags )
116	#define UDF_SB_BITMAP(X,Y,Z,I) ( UDF_SB_PARTMAPS(X)[(Y)].Z.s_bitmap->s_block_bitmap[I] )
117	#define UDF_SB_BITMAP_NR_GROUPS(X,Y,Z) ( UDF_SB_PARTMAPS(X)[(Y)].Z.s_bitmap->s_nr_groups )
118
119	#define UDF_SB_VOLIDENT(X) ( UDF_SB(X)->s_volident )
120	#define UDF_SB_NUMPARTS(X) ( UDF_SB(X)->s_partitions )
121	#define UDF_SB_PARTITION(X) ( UDF_SB(X)->s_partition )
122	#define UDF_SB_SESSION(X) ( UDF_SB(X)->s_session )
123	#define UDF_SB_ANCHOR(X) ( UDF_SB(X)->s_anchor )
124	#define UDF_SB_LASTBLOCK(X) ( UDF_SB(X)->s_lastblock )
125	#define UDF_SB_LVIDBH(X) ( UDF_SB(X)->s_lvidbh )
126	#define UDF_SB_LVID(X) ( (struct logicalVolIntegrityDesc *)UDF_SB_LVIDBH(X)->b_data )
127	#define UDF_SB_LVIDIU(X) ( (struct logicalVolIntegrityDescImpUse )&(UDF_SB_LVID(X)->impUse[le32_to_cpu(UDF_SB_LVID(X)->numOfPartitions) 2 * sizeof(uint32_t)/sizeof(uint8_t)]) )
128
129	#define UDF_SB_UMASK(X) ( UDF_SB(X)->s_umask )
130	#define UDF_SB_GID(X) ( UDF_SB(X)->s_gid )
131	#define UDF_SB_UID(X) ( UDF_SB(X)->s_uid )
132	#define UDF_SB_RECORDTIME(X) ( UDF_SB(X)->s_recordtime )
133	#define UDF_SB_SERIALNUM(X) ( UDF_SB(X)->s_serialnum )
134	#define UDF_SB_UDFREV(X) ( UDF_SB(X)->s_udfrev )
135	#define UDF_SB_FLAGS(X) ( UDF_SB(X)->s_flags )
136	#define UDF_SB_VAT(X) ( UDF_SB(X)->s_vat )
137
138	#endif /* __LINUX_UDF_SB_H */