diff options
Diffstat (limited to 'fs/udf/udf_sb.h')
| -rw-r--r-- | fs/udf/udf_sb.h | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/fs/udf/udf_sb.h b/fs/udf/udf_sb.h new file mode 100644 index 000000000000..0e54922daa09 --- /dev/null +++ b/fs/udf/udf_sb.h @@ -0,0 +1,139 @@ +#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))\ + {\ + if (UDF_SB_PARTMAPS(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 */ |