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[/] [test_project/] [trunk/] [linux_sd_driver/] [fs/] [ufs/] [util.h] - Blame information for rev 78

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/*
 *  linux/fs/ufs/util.h
 *
 * Copyright (C) 1998
 * Daniel Pirkl <daniel.pirkl@email.cz>
 * Charles University, Faculty of Mathematics and Physics
 */
 
#include <linux/buffer_head.h>
#include <linux/fs.h>
#include "swab.h"
 
 
/*
 * some useful macros
 */
#define in_range(b,first,len)   ((b)>=(first)&&(b)<(first)+(len))
 
/*
 * functions used for retyping
 */
static inline struct ufs_buffer_head *UCPI_UBH(struct ufs_cg_private_info *cpi)
{
        return &cpi->c_ubh;
}
static inline struct ufs_buffer_head *USPI_UBH(struct ufs_sb_private_info *spi)
{
        return &spi->s_ubh;
}
 
 
 
/*
 * macros used for accessing structures
 */
static inline s32
ufs_get_fs_state(struct super_block *sb, struct ufs_super_block_first *usb1,
                 struct ufs_super_block_third *usb3)
{
        switch (UFS_SB(sb)->s_flags & UFS_ST_MASK) {
        case UFS_ST_SUNOS:
                if (fs32_to_cpu(sb, usb3->fs_postblformat) == UFS_42POSTBLFMT)
                        return fs32_to_cpu(sb, usb1->fs_u0.fs_sun.fs_state);
                /* Fall Through to UFS_ST_SUN */
        case UFS_ST_SUN:
                return fs32_to_cpu(sb, usb3->fs_un2.fs_sun.fs_state);
        case UFS_ST_SUNx86:
                return fs32_to_cpu(sb, usb1->fs_u1.fs_sunx86.fs_state);
        case UFS_ST_44BSD:
        default:
                return fs32_to_cpu(sb, usb3->fs_un2.fs_44.fs_state);
        }
}
 
static inline void
ufs_set_fs_state(struct super_block *sb, struct ufs_super_block_first *usb1,
                 struct ufs_super_block_third *usb3, s32 value)
{
        switch (UFS_SB(sb)->s_flags & UFS_ST_MASK) {
        case UFS_ST_SUNOS:
                if (fs32_to_cpu(sb, usb3->fs_postblformat == UFS_42POSTBLFMT)) {
                        usb1->fs_u0.fs_sun.fs_state = cpu_to_fs32(sb, value);
                        break;
                }
                /* Fall Through to UFS_ST_SUN */
        case UFS_ST_SUN:
                usb3->fs_un2.fs_sun.fs_state = cpu_to_fs32(sb, value);
                break;
        case UFS_ST_SUNx86:
                usb1->fs_u1.fs_sunx86.fs_state = cpu_to_fs32(sb, value);
                break;
        case UFS_ST_44BSD:
                usb3->fs_un2.fs_44.fs_state = cpu_to_fs32(sb, value);
                break;
        }
}
 
static inline u32
ufs_get_fs_npsect(struct super_block *sb, struct ufs_super_block_first *usb1,
                  struct ufs_super_block_third *usb3)
{
        if ((UFS_SB(sb)->s_flags & UFS_ST_MASK) == UFS_ST_SUNx86)
                return fs32_to_cpu(sb, usb3->fs_un2.fs_sunx86.fs_npsect);
        else
                return fs32_to_cpu(sb, usb1->fs_u1.fs_sun.fs_npsect);
}
 
static inline u64
ufs_get_fs_qbmask(struct super_block *sb, struct ufs_super_block_third *usb3)
{
        __fs64 tmp;
 
        switch (UFS_SB(sb)->s_flags & UFS_ST_MASK) {
        case UFS_ST_SUNOS:
        case UFS_ST_SUN:
                ((__fs32 *)&tmp)[0] = usb3->fs_un2.fs_sun.fs_qbmask[0];
                ((__fs32 *)&tmp)[1] = usb3->fs_un2.fs_sun.fs_qbmask[1];
                break;
        case UFS_ST_SUNx86:
                ((__fs32 *)&tmp)[0] = usb3->fs_un2.fs_sunx86.fs_qbmask[0];
                ((__fs32 *)&tmp)[1] = usb3->fs_un2.fs_sunx86.fs_qbmask[1];
                break;
        case UFS_ST_44BSD:
                ((__fs32 *)&tmp)[0] = usb3->fs_un2.fs_44.fs_qbmask[0];
                ((__fs32 *)&tmp)[1] = usb3->fs_un2.fs_44.fs_qbmask[1];
                break;
        }
 
        return fs64_to_cpu(sb, tmp);
}
 
static inline u64
ufs_get_fs_qfmask(struct super_block *sb, struct ufs_super_block_third *usb3)
{
        __fs64 tmp;
 
        switch (UFS_SB(sb)->s_flags & UFS_ST_MASK) {
        case UFS_ST_SUNOS:
        case UFS_ST_SUN:
                ((__fs32 *)&tmp)[0] = usb3->fs_un2.fs_sun.fs_qfmask[0];
                ((__fs32 *)&tmp)[1] = usb3->fs_un2.fs_sun.fs_qfmask[1];
                break;
        case UFS_ST_SUNx86:
                ((__fs32 *)&tmp)[0] = usb3->fs_un2.fs_sunx86.fs_qfmask[0];
                ((__fs32 *)&tmp)[1] = usb3->fs_un2.fs_sunx86.fs_qfmask[1];
                break;
        case UFS_ST_44BSD:
                ((__fs32 *)&tmp)[0] = usb3->fs_un2.fs_44.fs_qfmask[0];
                ((__fs32 *)&tmp)[1] = usb3->fs_un2.fs_44.fs_qfmask[1];
                break;
        }
 
        return fs64_to_cpu(sb, tmp);
}
 
static inline u16
ufs_get_de_namlen(struct super_block *sb, struct ufs_dir_entry *de)
{
        if ((UFS_SB(sb)->s_flags & UFS_DE_MASK) == UFS_DE_OLD)
                return fs16_to_cpu(sb, de->d_u.d_namlen);
        else
                return de->d_u.d_44.d_namlen; /* XXX this seems wrong */
}
 
static inline void
ufs_set_de_namlen(struct super_block *sb, struct ufs_dir_entry *de, u16 value)
{
        if ((UFS_SB(sb)->s_flags & UFS_DE_MASK) == UFS_DE_OLD)
                de->d_u.d_namlen = cpu_to_fs16(sb, value);
        else
                de->d_u.d_44.d_namlen = value; /* XXX this seems wrong */
}
 
static inline void
ufs_set_de_type(struct super_block *sb, struct ufs_dir_entry *de, int mode)
{
        if ((UFS_SB(sb)->s_flags & UFS_DE_MASK) != UFS_DE_44BSD)
                return;
 
        /*
         * TODO turn this into a table lookup
         */
        switch (mode & S_IFMT) {
        case S_IFSOCK:
                de->d_u.d_44.d_type = DT_SOCK;
                break;
        case S_IFLNK:
                de->d_u.d_44.d_type = DT_LNK;
                break;
        case S_IFREG:
                de->d_u.d_44.d_type = DT_REG;
                break;
        case S_IFBLK:
                de->d_u.d_44.d_type = DT_BLK;
                break;
        case S_IFDIR:
                de->d_u.d_44.d_type = DT_DIR;
                break;
        case S_IFCHR:
                de->d_u.d_44.d_type = DT_CHR;
                break;
        case S_IFIFO:
                de->d_u.d_44.d_type = DT_FIFO;
                break;
        default:
                de->d_u.d_44.d_type = DT_UNKNOWN;
        }
}
 
static inline u32
ufs_get_inode_uid(struct super_block *sb, struct ufs_inode *inode)
{
        switch (UFS_SB(sb)->s_flags & UFS_UID_MASK) {
        case UFS_UID_44BSD:
                return fs32_to_cpu(sb, inode->ui_u3.ui_44.ui_uid);
        case UFS_UID_EFT:
                if (inode->ui_u1.oldids.ui_suid == 0xFFFF)
                        return fs32_to_cpu(sb, inode->ui_u3.ui_sun.ui_uid);
                /* Fall through */
        default:
                return fs16_to_cpu(sb, inode->ui_u1.oldids.ui_suid);
        }
}
 
static inline void
ufs_set_inode_uid(struct super_block *sb, struct ufs_inode *inode, u32 value)
{
        switch (UFS_SB(sb)->s_flags & UFS_UID_MASK) {
        case UFS_UID_44BSD:
                inode->ui_u3.ui_44.ui_uid = cpu_to_fs32(sb, value);
                inode->ui_u1.oldids.ui_suid = cpu_to_fs16(sb, value);
                break;
        case UFS_UID_EFT:
                inode->ui_u3.ui_sun.ui_uid = cpu_to_fs32(sb, value);
                if (value > 0xFFFF)
                        value = 0xFFFF;
                /* Fall through */
        default:
                inode->ui_u1.oldids.ui_suid = cpu_to_fs16(sb, value);
                break;
        }
}
 
static inline u32
ufs_get_inode_gid(struct super_block *sb, struct ufs_inode *inode)
{
        switch (UFS_SB(sb)->s_flags & UFS_UID_MASK) {
        case UFS_UID_44BSD:
                return fs32_to_cpu(sb, inode->ui_u3.ui_44.ui_gid);
        case UFS_UID_EFT:
                if (inode->ui_u1.oldids.ui_suid == 0xFFFF)
                        return fs32_to_cpu(sb, inode->ui_u3.ui_sun.ui_gid);
                /* Fall through */
        default:
                return fs16_to_cpu(sb, inode->ui_u1.oldids.ui_sgid);
        }
}
 
static inline void
ufs_set_inode_gid(struct super_block *sb, struct ufs_inode *inode, u32 value)
{
        switch (UFS_SB(sb)->s_flags & UFS_UID_MASK) {
        case UFS_UID_44BSD:
                inode->ui_u3.ui_44.ui_gid = cpu_to_fs32(sb, value);
                inode->ui_u1.oldids.ui_sgid =  cpu_to_fs16(sb, value);
                break;
        case UFS_UID_EFT:
                inode->ui_u3.ui_sun.ui_gid = cpu_to_fs32(sb, value);
                if (value > 0xFFFF)
                        value = 0xFFFF;
                /* Fall through */
        default:
                inode->ui_u1.oldids.ui_sgid =  cpu_to_fs16(sb, value);
                break;
        }
}
 
extern dev_t ufs_get_inode_dev(struct super_block *, struct ufs_inode_info *);
extern void ufs_set_inode_dev(struct super_block *, struct ufs_inode_info *, dev_t);
extern int __ufs_write_begin(struct file *file, struct address_space *mapping,
                loff_t pos, unsigned len, unsigned flags,
                struct page **pagep, void **fsdata);
 
/*
 * These functions manipulate ufs buffers
 */
#define ubh_bread(sb,fragment,size) _ubh_bread_(uspi,sb,fragment,size)  
extern struct ufs_buffer_head * _ubh_bread_(struct ufs_sb_private_info *, struct super_block *, u64 , u64);
extern struct ufs_buffer_head * ubh_bread_uspi(struct ufs_sb_private_info *, struct super_block *, u64, u64);
extern void ubh_brelse (struct ufs_buffer_head *);
extern void ubh_brelse_uspi (struct ufs_sb_private_info *);
extern void ubh_mark_buffer_dirty (struct ufs_buffer_head *);
extern void ubh_mark_buffer_uptodate (struct ufs_buffer_head *, int);
extern void ubh_ll_rw_block(int, struct ufs_buffer_head *);
extern void ubh_wait_on_buffer (struct ufs_buffer_head *);
extern void ubh_bforget (struct ufs_buffer_head *);
extern int  ubh_buffer_dirty (struct ufs_buffer_head *);
#define ubh_ubhcpymem(mem,ubh,size) _ubh_ubhcpymem_(uspi,mem,ubh,size)
extern void _ubh_ubhcpymem_(struct ufs_sb_private_info *, unsigned char *, struct ufs_buffer_head *, unsigned);
#define ubh_memcpyubh(ubh,mem,size) _ubh_memcpyubh_(uspi,ubh,mem,size)
extern void _ubh_memcpyubh_(struct ufs_sb_private_info *, struct ufs_buffer_head *, unsigned char *, unsigned);
 
/* This functions works with cache pages*/
extern struct page *ufs_get_locked_page(struct address_space *mapping,
                                        pgoff_t index);
static inline void ufs_put_locked_page(struct page *page)
{
       unlock_page(page);
       page_cache_release(page);
}
 
 
/*
 * macros and inline function to get important structures from ufs_sb_private_info
 */
 
static inline void *get_usb_offset(struct ufs_sb_private_info *uspi,
                                   unsigned int offset)
{
        unsigned int index;
 
        index = offset >> uspi->s_fshift;
        offset &= ~uspi->s_fmask;
        return uspi->s_ubh.bh[index]->b_data + offset;
}
 
#define ubh_get_usb_first(uspi) \
        ((struct ufs_super_block_first *)get_usb_offset((uspi), 0))
 
#define ubh_get_usb_second(uspi) \
        ((struct ufs_super_block_second *)get_usb_offset((uspi), UFS_SECTOR_SIZE))
 
#define ubh_get_usb_third(uspi) \
        ((struct ufs_super_block_third *)get_usb_offset((uspi), 2*UFS_SECTOR_SIZE))
 
 
#define ubh_get_ucg(ubh) \
        ((struct ufs_cylinder_group *)((ubh)->bh[0]->b_data))
 
 
/*
 * Extract byte from ufs_buffer_head
 * Extract the bits for a block from a map inside ufs_buffer_head
 */
#define ubh_get_addr8(ubh,begin) \
        ((u8*)(ubh)->bh[(begin) >> uspi->s_fshift]->b_data + \
        ((begin) & ~uspi->s_fmask))
 
#define ubh_get_addr16(ubh,begin) \
        (((__fs16*)((ubh)->bh[(begin) >> (uspi->s_fshift-1)]->b_data)) + \
        ((begin) & ((uspi->fsize>>1) - 1)))
 
#define ubh_get_addr32(ubh,begin) \
        (((__fs32*)((ubh)->bh[(begin) >> (uspi->s_fshift-2)]->b_data)) + \
        ((begin) & ((uspi->s_fsize>>2) - 1)))
 
#define ubh_get_addr64(ubh,begin) \
        (((__fs64*)((ubh)->bh[(begin) >> (uspi->s_fshift-3)]->b_data)) + \
        ((begin) & ((uspi->s_fsize>>3) - 1)))
 
#define ubh_get_addr ubh_get_addr8
 
static inline void *ubh_get_data_ptr(struct ufs_sb_private_info *uspi,
                                     struct ufs_buffer_head *ubh,
                                     u64 blk)
{
        if (uspi->fs_magic == UFS2_MAGIC)
                return ubh_get_addr64(ubh, blk);
        else
                return ubh_get_addr32(ubh, blk);
}
 
#define ubh_blkmap(ubh,begin,bit) \
        ((*ubh_get_addr(ubh, (begin) + ((bit) >> 3)) >> ((bit) & 7)) & (0xff >> (UFS_MAXFRAG - uspi->s_fpb)))
 
/*
 * Determine the number of available frags given a
 * percentage to hold in reserve.
 */
static inline u64
ufs_freespace(struct ufs_sb_private_info *uspi, int percentreserved)
{
        return ufs_blkstofrags(uspi->cs_total.cs_nbfree) +
                uspi->cs_total.cs_nffree -
                (uspi->s_dsize * (percentreserved) / 100);
}
 
/*
 * Macros to access cylinder group array structures
 */
#define ubh_cg_blktot(ucpi,cylno) \
        (*((__fs32*)ubh_get_addr(UCPI_UBH(ucpi), (ucpi)->c_btotoff + ((cylno) << 2))))
 
#define ubh_cg_blks(ucpi,cylno,rpos) \
        (*((__fs16*)ubh_get_addr(UCPI_UBH(ucpi), \
        (ucpi)->c_boff + (((cylno) * uspi->s_nrpos + (rpos)) << 1 ))))
 
/*
 * Bitmap operations
 * These functions work like classical bitmap operations.
 * The difference is that we don't have the whole bitmap
 * in one contiguous chunk of memory, but in several buffers.
 * The parameters of each function are super_block, ufs_buffer_head and
 * position of the beginning of the bitmap.
 */
#define ubh_setbit(ubh,begin,bit) \
        (*ubh_get_addr(ubh, (begin) + ((bit) >> 3)) |= (1 << ((bit) & 7)))
 
#define ubh_clrbit(ubh,begin,bit) \
        (*ubh_get_addr (ubh, (begin) + ((bit) >> 3)) &= ~(1 << ((bit) & 7)))
 
#define ubh_isset(ubh,begin,bit) \
        (*ubh_get_addr (ubh, (begin) + ((bit) >> 3)) & (1 << ((bit) & 7)))
 
#define ubh_isclr(ubh,begin,bit) (!ubh_isset(ubh,begin,bit))
 
#define ubh_find_first_zero_bit(ubh,begin,size) _ubh_find_next_zero_bit_(uspi,ubh,begin,size,0)
 
#define ubh_find_next_zero_bit(ubh,begin,size,offset) _ubh_find_next_zero_bit_(uspi,ubh,begin,size,offset)
static inline unsigned _ubh_find_next_zero_bit_(
        struct ufs_sb_private_info * uspi, struct ufs_buffer_head * ubh,
        unsigned begin, unsigned size, unsigned offset)
{
        unsigned base, count, pos;
 
        size -= offset;
        begin <<= 3;
        offset += begin;
        base = offset >> uspi->s_bpfshift;
        offset &= uspi->s_bpfmask;
        for (;;) {
                count = min_t(unsigned int, size + offset, uspi->s_bpf);
                size -= count - offset;
                pos = ext2_find_next_zero_bit (ubh->bh[base]->b_data, count, offset);
                if (pos < count || !size)
                        break;
                base++;
                offset = 0;
        }
        return (base << uspi->s_bpfshift) + pos - begin;
}
 
static inline unsigned find_last_zero_bit (unsigned char * bitmap,
        unsigned size, unsigned offset)
{
        unsigned bit, i;
        unsigned char * mapp;
        unsigned char map;
 
        mapp = bitmap + (size >> 3);
        map = *mapp--;
        bit = 1 << (size & 7);
        for (i = size; i > offset; i--) {
                if ((map & bit) == 0)
                        break;
                if ((i & 7) != 0) {
                        bit >>= 1;
                } else {
                        map = *mapp--;
                        bit = 1 << 7;
                }
        }
        return i;
}
 
#define ubh_find_last_zero_bit(ubh,begin,size,offset) _ubh_find_last_zero_bit_(uspi,ubh,begin,size,offset)
static inline unsigned _ubh_find_last_zero_bit_(
        struct ufs_sb_private_info * uspi, struct ufs_buffer_head * ubh,
        unsigned begin, unsigned start, unsigned end)
{
        unsigned base, count, pos, size;
 
        size = start - end;
        begin <<= 3;
        start += begin;
        base = start >> uspi->s_bpfshift;
        start &= uspi->s_bpfmask;
        for (;;) {
                count = min_t(unsigned int,
                            size + (uspi->s_bpf - start), uspi->s_bpf)
                        - (uspi->s_bpf - start);
                size -= count;
                pos = find_last_zero_bit (ubh->bh[base]->b_data,
                        start, start - count);
                if (pos > start - count || !size)
                        break;
                base--;
                start = uspi->s_bpf;
        }
        return (base << uspi->s_bpfshift) + pos - begin;
}
 
#define ubh_isblockclear(ubh,begin,block) (!_ubh_isblockset_(uspi,ubh,begin,block))
 
#define ubh_isblockset(ubh,begin,block) _ubh_isblockset_(uspi,ubh,begin,block)
static inline int _ubh_isblockset_(struct ufs_sb_private_info * uspi,
        struct ufs_buffer_head * ubh, unsigned begin, unsigned block)
{
        switch (uspi->s_fpb) {
        case 8:
                return (*ubh_get_addr (ubh, begin + block) == 0xff);
        case 4:
                return (*ubh_get_addr (ubh, begin + (block >> 1)) == (0x0f << ((block & 0x01) << 2)));
        case 2:
                return (*ubh_get_addr (ubh, begin + (block >> 2)) == (0x03 << ((block & 0x03) << 1)));
        case 1:
                return (*ubh_get_addr (ubh, begin + (block >> 3)) == (0x01 << (block & 0x07)));
        }
        return 0;
}
 
#define ubh_clrblock(ubh,begin,block) _ubh_clrblock_(uspi,ubh,begin,block)
static inline void _ubh_clrblock_(struct ufs_sb_private_info * uspi,
        struct ufs_buffer_head * ubh, unsigned begin, unsigned block)
{
        switch (uspi->s_fpb) {
        case 8:
                *ubh_get_addr (ubh, begin + block) = 0x00;
                return;
        case 4:
                *ubh_get_addr (ubh, begin + (block >> 1)) &= ~(0x0f << ((block & 0x01) << 2));
                return;
        case 2:
                *ubh_get_addr (ubh, begin + (block >> 2)) &= ~(0x03 << ((block & 0x03) << 1));
                return;
        case 1:
                *ubh_get_addr (ubh, begin + (block >> 3)) &= ~(0x01 << ((block & 0x07)));
                return;
        }
}
 
#define ubh_setblock(ubh,begin,block) _ubh_setblock_(uspi,ubh,begin,block)
static inline void _ubh_setblock_(struct ufs_sb_private_info * uspi,
        struct ufs_buffer_head * ubh, unsigned begin, unsigned block)
{
        switch (uspi->s_fpb) {
        case 8:
                *ubh_get_addr(ubh, begin + block) = 0xff;
                return;
        case 4:
                *ubh_get_addr(ubh, begin + (block >> 1)) |= (0x0f << ((block & 0x01) << 2));
                return;
        case 2:
                *ubh_get_addr(ubh, begin + (block >> 2)) |= (0x03 << ((block & 0x03) << 1));
                return;
        case 1:
                *ubh_get_addr(ubh, begin + (block >> 3)) |= (0x01 << ((block & 0x07)));
                return;
        }
}
 
static inline void ufs_fragacct (struct super_block * sb, unsigned blockmap,
        __fs32 * fraglist, int cnt)
{
        struct ufs_sb_private_info * uspi;
        unsigned fragsize, pos;
 
        uspi = UFS_SB(sb)->s_uspi;
 
        fragsize = 0;
        for (pos = 0; pos < uspi->s_fpb; pos++) {
                if (blockmap & (1 << pos)) {
                        fragsize++;
                }
                else if (fragsize > 0) {
                        fs32_add(sb, &fraglist[fragsize], cnt);
                        fragsize = 0;
                }
        }
        if (fragsize > 0 && fragsize < uspi->s_fpb)
                fs32_add(sb, &fraglist[fragsize], cnt);
}
 
static inline void *ufs_get_direct_data_ptr(struct ufs_sb_private_info *uspi,
                                            struct ufs_inode_info *ufsi,
                                            unsigned blk)
{
        BUG_ON(blk > UFS_TIND_BLOCK);
        return uspi->fs_magic == UFS2_MAGIC ?
                (void *)&ufsi->i_u1.u2_i_data[blk] :
                (void *)&ufsi->i_u1.i_data[blk];
}
 
static inline u64 ufs_data_ptr_to_cpu(struct super_block *sb, void *p)
{
        return UFS_SB(sb)->s_uspi->fs_magic == UFS2_MAGIC ?
                fs64_to_cpu(sb, *(__fs64 *)p) :
                fs32_to_cpu(sb, *(__fs32 *)p);
}
 
static inline void ufs_cpu_to_data_ptr(struct super_block *sb, void *p, u64 val)
{
        if (UFS_SB(sb)->s_uspi->fs_magic == UFS2_MAGIC)
                *(__fs64 *)p = cpu_to_fs64(sb, val);
        else
                *(__fs32 *)p = cpu_to_fs32(sb, val);
}
 
static inline void ufs_data_ptr_clear(struct ufs_sb_private_info *uspi,
                                      void *p)
{
        if (uspi->fs_magic == UFS2_MAGIC)
                *(__fs64 *)p = 0;
        else
                *(__fs32 *)p = 0;
}
 
static inline int ufs_is_data_ptr_zero(struct ufs_sb_private_info *uspi,
                                       void *p)
{
        if (uspi->fs_magic == UFS2_MAGIC)
                return *(__fs64 *)p == 0;
        else
                return *(__fs32 *)p == 0;
}

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[/] [test_project/] [trunk/] [linux_sd_driver/] [fs/] [ufs/] [util.h] - Blame information for rev 78

Line No.	Rev	Author	Line
1	62	marcus.erl	`/*`
2			`* linux/fs/ufs/util.h`
3			`*`
4			`* Copyright (C) 1998`
5			`* Daniel Pirkl <daniel.pirkl@email.cz>`
6			`* Charles University, Faculty of Mathematics and Physics`
7			`*/`
8
9			`#include <linux/buffer_head.h>`
10			`#include <linux/fs.h>`
11			`#include "swab.h"`
12
13
14			`/*`
15			`* some useful macros`
16			`*/`
17			`#define in_range(b,first,len) ((b)>=(first)&&(b)<(first)+(len))`
18
19			`/*`
20			`* functions used for retyping`
21			`*/`
22			`static inline struct ufs_buffer_head UCPI_UBH(struct ufs_cg_private_info cpi)`
23			`{`
24			`return &cpi->c_ubh;`
25			`}`
26			`static inline struct ufs_buffer_head USPI_UBH(struct ufs_sb_private_info spi)`
27			`{`
28			`return &spi->s_ubh;`
29			`}`
30
31
32
33			`/*`
34			`* macros used for accessing structures`
35			`*/`
36			`static inline s32`
37			`ufs_get_fs_state(struct super_block sb, struct ufs_super_block_first usb1,`
38			`struct ufs_super_block_third *usb3)`
39			`{`
40			`switch (UFS_SB(sb)->s_flags & UFS_ST_MASK) {`
41			`case UFS_ST_SUNOS:`
42			`if (fs32_to_cpu(sb, usb3->fs_postblformat) == UFS_42POSTBLFMT)`
43			`return fs32_to_cpu(sb, usb1->fs_u0.fs_sun.fs_state);`
44			`/* Fall Through to UFS_ST_SUN */`
45			`case UFS_ST_SUN:`
46			`return fs32_to_cpu(sb, usb3->fs_un2.fs_sun.fs_state);`
47			`case UFS_ST_SUNx86:`
48			`return fs32_to_cpu(sb, usb1->fs_u1.fs_sunx86.fs_state);`
49			`case UFS_ST_44BSD:`
50			`default:`
51			`return fs32_to_cpu(sb, usb3->fs_un2.fs_44.fs_state);`
52			`}`
53			`}`
54
55			`static inline void`
56			`ufs_set_fs_state(struct super_block sb, struct ufs_super_block_first usb1,`
57			`struct ufs_super_block_third *usb3, s32 value)`
58			`{`
59			`switch (UFS_SB(sb)->s_flags & UFS_ST_MASK) {`
60			`case UFS_ST_SUNOS:`
61			`if (fs32_to_cpu(sb, usb3->fs_postblformat == UFS_42POSTBLFMT)) {`
62			`usb1->fs_u0.fs_sun.fs_state = cpu_to_fs32(sb, value);`
63			`break;`
64			`}`
65			`/* Fall Through to UFS_ST_SUN */`
66			`case UFS_ST_SUN:`
67			`usb3->fs_un2.fs_sun.fs_state = cpu_to_fs32(sb, value);`
68			`break;`
69			`case UFS_ST_SUNx86:`
70			`usb1->fs_u1.fs_sunx86.fs_state = cpu_to_fs32(sb, value);`
71			`break;`
72			`case UFS_ST_44BSD:`
73			`usb3->fs_un2.fs_44.fs_state = cpu_to_fs32(sb, value);`
74			`break;`
75			`}`
76			`}`
77
78			`static inline u32`
79			`ufs_get_fs_npsect(struct super_block sb, struct ufs_super_block_first usb1,`
80			`struct ufs_super_block_third *usb3)`
81			`{`
82			`if ((UFS_SB(sb)->s_flags & UFS_ST_MASK) == UFS_ST_SUNx86)`
83			`return fs32_to_cpu(sb, usb3->fs_un2.fs_sunx86.fs_npsect);`
84			`else`
85			`return fs32_to_cpu(sb, usb1->fs_u1.fs_sun.fs_npsect);`
86			`}`
87
88			`static inline u64`
89			`ufs_get_fs_qbmask(struct super_block sb, struct ufs_super_block_third usb3)`
90			`{`
91			`__fs64 tmp;`
92
93			`switch (UFS_SB(sb)->s_flags & UFS_ST_MASK) {`
94			`case UFS_ST_SUNOS:`
95			`case UFS_ST_SUN:`
96			`((__fs32 *)&tmp)[0] = usb3->fs_un2.fs_sun.fs_qbmask[0];`
97			`((__fs32 *)&tmp)[1] = usb3->fs_un2.fs_sun.fs_qbmask[1];`
98			`break;`
99			`case UFS_ST_SUNx86:`
100			`((__fs32 *)&tmp)[0] = usb3->fs_un2.fs_sunx86.fs_qbmask[0];`
101			`((__fs32 *)&tmp)[1] = usb3->fs_un2.fs_sunx86.fs_qbmask[1];`
102			`break;`
103			`case UFS_ST_44BSD:`
104			`((__fs32 *)&tmp)[0] = usb3->fs_un2.fs_44.fs_qbmask[0];`
105			`((__fs32 *)&tmp)[1] = usb3->fs_un2.fs_44.fs_qbmask[1];`
106			`break;`
107			`}`
108
109			`return fs64_to_cpu(sb, tmp);`
110			`}`
111
112			`static inline u64`
113			`ufs_get_fs_qfmask(struct super_block sb, struct ufs_super_block_third usb3)`
114			`{`
115			`__fs64 tmp;`
116
117			`switch (UFS_SB(sb)->s_flags & UFS_ST_MASK) {`
118			`case UFS_ST_SUNOS:`
119			`case UFS_ST_SUN:`
120			`((__fs32 *)&tmp)[0] = usb3->fs_un2.fs_sun.fs_qfmask[0];`
121			`((__fs32 *)&tmp)[1] = usb3->fs_un2.fs_sun.fs_qfmask[1];`
122			`break;`
123			`case UFS_ST_SUNx86:`
124			`((__fs32 *)&tmp)[0] = usb3->fs_un2.fs_sunx86.fs_qfmask[0];`
125			`((__fs32 *)&tmp)[1] = usb3->fs_un2.fs_sunx86.fs_qfmask[1];`
126			`break;`
127			`case UFS_ST_44BSD:`
128			`((__fs32 *)&tmp)[0] = usb3->fs_un2.fs_44.fs_qfmask[0];`
129			`((__fs32 *)&tmp)[1] = usb3->fs_un2.fs_44.fs_qfmask[1];`
130			`break;`
131			`}`
132
133			`return fs64_to_cpu(sb, tmp);`
134			`}`
135
136			`static inline u16`
137			`ufs_get_de_namlen(struct super_block sb, struct ufs_dir_entry de)`
138			`{`
139			`if ((UFS_SB(sb)->s_flags & UFS_DE_MASK) == UFS_DE_OLD)`
140			`return fs16_to_cpu(sb, de->d_u.d_namlen);`
141			`else`
142			`return de->d_u.d_44.d_namlen; /* XXX this seems wrong */`
143			`}`
144
145			`static inline void`
146			`ufs_set_de_namlen(struct super_block sb, struct ufs_dir_entry de, u16 value)`
147			`{`
148			`if ((UFS_SB(sb)->s_flags & UFS_DE_MASK) == UFS_DE_OLD)`
149			`de->d_u.d_namlen = cpu_to_fs16(sb, value);`
150			`else`
151			`de->d_u.d_44.d_namlen = value; /* XXX this seems wrong */`
152			`}`
153
154			`static inline void`
155			`ufs_set_de_type(struct super_block sb, struct ufs_dir_entry de, int mode)`
156			`{`
157			`if ((UFS_SB(sb)->s_flags & UFS_DE_MASK) != UFS_DE_44BSD)`
158			`return;`
159
160			`/*`
161			`* TODO turn this into a table lookup`
162			`*/`
163			`switch (mode & S_IFMT) {`
164			`case S_IFSOCK:`
165			`de->d_u.d_44.d_type = DT_SOCK;`
166			`break;`
167			`case S_IFLNK:`
168			`de->d_u.d_44.d_type = DT_LNK;`
169			`break;`
170			`case S_IFREG:`
171			`de->d_u.d_44.d_type = DT_REG;`
172			`break;`
173			`case S_IFBLK:`
174			`de->d_u.d_44.d_type = DT_BLK;`
175			`break;`
176			`case S_IFDIR:`
177			`de->d_u.d_44.d_type = DT_DIR;`
178			`break;`
179			`case S_IFCHR:`
180			`de->d_u.d_44.d_type = DT_CHR;`
181			`break;`
182			`case S_IFIFO:`
183			`de->d_u.d_44.d_type = DT_FIFO;`
184			`break;`
185			`default:`
186			`de->d_u.d_44.d_type = DT_UNKNOWN;`
187			`}`
188			`}`
189
190			`static inline u32`
191			`ufs_get_inode_uid(struct super_block sb, struct ufs_inode inode)`
192			`{`
193			`switch (UFS_SB(sb)->s_flags & UFS_UID_MASK) {`
194			`case UFS_UID_44BSD:`
195			`return fs32_to_cpu(sb, inode->ui_u3.ui_44.ui_uid);`
196			`case UFS_UID_EFT:`
197			`if (inode->ui_u1.oldids.ui_suid == 0xFFFF)`
198			`return fs32_to_cpu(sb, inode->ui_u3.ui_sun.ui_uid);`
199			`/* Fall through */`
200			`default:`
201			`return fs16_to_cpu(sb, inode->ui_u1.oldids.ui_suid);`
202			`}`
203			`}`
204
205			`static inline void`
206			`ufs_set_inode_uid(struct super_block sb, struct ufs_inode inode, u32 value)`
207			`{`
208			`switch (UFS_SB(sb)->s_flags & UFS_UID_MASK) {`
209			`case UFS_UID_44BSD:`
210			`inode->ui_u3.ui_44.ui_uid = cpu_to_fs32(sb, value);`
211			`inode->ui_u1.oldids.ui_suid = cpu_to_fs16(sb, value);`
212			`break;`
213			`case UFS_UID_EFT:`
214			`inode->ui_u3.ui_sun.ui_uid = cpu_to_fs32(sb, value);`
215			`if (value > 0xFFFF)`
216			`value = 0xFFFF;`
217			`/* Fall through */`
218			`default:`
219			`inode->ui_u1.oldids.ui_suid = cpu_to_fs16(sb, value);`
220			`break;`
221			`}`
222			`}`
223
224			`static inline u32`
225			`ufs_get_inode_gid(struct super_block sb, struct ufs_inode inode)`
226			`{`
227			`switch (UFS_SB(sb)->s_flags & UFS_UID_MASK) {`
228			`case UFS_UID_44BSD:`
229			`return fs32_to_cpu(sb, inode->ui_u3.ui_44.ui_gid);`
230			`case UFS_UID_EFT:`
231			`if (inode->ui_u1.oldids.ui_suid == 0xFFFF)`
232			`return fs32_to_cpu(sb, inode->ui_u3.ui_sun.ui_gid);`
233			`/* Fall through */`
234			`default:`
235			`return fs16_to_cpu(sb, inode->ui_u1.oldids.ui_sgid);`
236			`}`
237			`}`
238
239			`static inline void`
240			`ufs_set_inode_gid(struct super_block sb, struct ufs_inode inode, u32 value)`
241			`{`
242			`switch (UFS_SB(sb)->s_flags & UFS_UID_MASK) {`
243			`case UFS_UID_44BSD:`
244			`inode->ui_u3.ui_44.ui_gid = cpu_to_fs32(sb, value);`
245			`inode->ui_u1.oldids.ui_sgid = cpu_to_fs16(sb, value);`
246			`break;`
247			`case UFS_UID_EFT:`
248			`inode->ui_u3.ui_sun.ui_gid = cpu_to_fs32(sb, value);`
249			`if (value > 0xFFFF)`
250			`value = 0xFFFF;`
251			`/* Fall through */`
252			`default:`
253			`inode->ui_u1.oldids.ui_sgid = cpu_to_fs16(sb, value);`
254			`break;`
255			`}`
256			`}`
257
258			`extern dev_t ufs_get_inode_dev(struct super_block , struct ufs_inode_info );`
259			`extern void ufs_set_inode_dev(struct super_block , struct ufs_inode_info , dev_t);`
260			`extern int __ufs_write_begin(struct file file, struct address_space mapping,`
261			`loff_t pos, unsigned len, unsigned flags,`
262			`struct page pagep, void fsdata);`
263
264			`/*`
265			`* These functions manipulate ufs buffers`
266			`*/`
267			`#define ubh_bread(sb,fragment,size) _ubh_bread_(uspi,sb,fragment,size)`
268			`extern struct ufs_buffer_head * _ubh_bread_(struct ufs_sb_private_info , struct super_block , u64 , u64);`
269			`extern struct ufs_buffer_head * ubh_bread_uspi(struct ufs_sb_private_info , struct super_block , u64, u64);`
270			`extern void ubh_brelse (struct ufs_buffer_head *);`
271			`extern void ubh_brelse_uspi (struct ufs_sb_private_info *);`
272			`extern void ubh_mark_buffer_dirty (struct ufs_buffer_head *);`
273			`extern void ubh_mark_buffer_uptodate (struct ufs_buffer_head *, int);`
274			`extern void ubh_ll_rw_block(int, struct ufs_buffer_head *);`
275			`extern void ubh_wait_on_buffer (struct ufs_buffer_head *);`
276			`extern void ubh_bforget (struct ufs_buffer_head *);`
277			`extern int ubh_buffer_dirty (struct ufs_buffer_head *);`
278			`#define ubh_ubhcpymem(mem,ubh,size) _ubh_ubhcpymem_(uspi,mem,ubh,size)`
279			`extern void _ubh_ubhcpymem_(struct ufs_sb_private_info , unsigned char , struct ufs_buffer_head *, unsigned);`
280			`#define ubh_memcpyubh(ubh,mem,size) _ubh_memcpyubh_(uspi,ubh,mem,size)`
281			`extern void _ubh_memcpyubh_(struct ufs_sb_private_info , struct ufs_buffer_head , unsigned char *, unsigned);`
282
283			`/* This functions works with cache pages*/`
284			`extern struct page ufs_get_locked_page(struct address_space mapping,`
285			`pgoff_t index);`
286			`static inline void ufs_put_locked_page(struct page *page)`
287			`{`
288			`unlock_page(page);`
289			`page_cache_release(page);`
290			`}`
291
292
293			`/*`
294			`* macros and inline function to get important structures from ufs_sb_private_info`
295			`*/`
296
297			`static inline void get_usb_offset(struct ufs_sb_private_info uspi,`
298			`unsigned int offset)`
299			`{`
300			`unsigned int index;`
301
302			`index = offset >> uspi->s_fshift;`
303			`offset &= ~uspi->s_fmask;`
304			`return uspi->s_ubh.bh[index]->b_data + offset;`
305			`}`
306
307			`#define ubh_get_usb_first(uspi) \`
308			`((struct ufs_super_block_first *)get_usb_offset((uspi), 0))`
309
310			`#define ubh_get_usb_second(uspi) \`
311			`((struct ufs_super_block_second *)get_usb_offset((uspi), UFS_SECTOR_SIZE))`
312
313			`#define ubh_get_usb_third(uspi) \`
314			`((struct ufs_super_block_third )get_usb_offset((uspi), 2UFS_SECTOR_SIZE))`
315
316
317			`#define ubh_get_ucg(ubh) \`
318			`((struct ufs_cylinder_group *)((ubh)->bh[0]->b_data))`
319
320
321			`/*`
322			`* Extract byte from ufs_buffer_head`
323			`* Extract the bits for a block from a map inside ufs_buffer_head`
324			`*/`
325			`#define ubh_get_addr8(ubh,begin) \`
326			`((u8*)(ubh)->bh[(begin) >> uspi->s_fshift]->b_data + \`
327			`((begin) & ~uspi->s_fmask))`
328
329			`#define ubh_get_addr16(ubh,begin) \`
330			`(((__fs16*)((ubh)->bh[(begin) >> (uspi->s_fshift-1)]->b_data)) + \`
331			`((begin) & ((uspi->fsize>>1) - 1)))`
332
333			`#define ubh_get_addr32(ubh,begin) \`
334			`(((__fs32*)((ubh)->bh[(begin) >> (uspi->s_fshift-2)]->b_data)) + \`
335			`((begin) & ((uspi->s_fsize>>2) - 1)))`
336
337			`#define ubh_get_addr64(ubh,begin) \`
338			`(((__fs64*)((ubh)->bh[(begin) >> (uspi->s_fshift-3)]->b_data)) + \`
339			`((begin) & ((uspi->s_fsize>>3) - 1)))`
340
341			`#define ubh_get_addr ubh_get_addr8`
342
343			`static inline void ubh_get_data_ptr(struct ufs_sb_private_info uspi,`
344			`struct ufs_buffer_head *ubh,`
345			`u64 blk)`
346			`{`
347			`if (uspi->fs_magic == UFS2_MAGIC)`
348			`return ubh_get_addr64(ubh, blk);`
349			`else`
350			`return ubh_get_addr32(ubh, blk);`
351			`}`
352
353			`#define ubh_blkmap(ubh,begin,bit) \`
354			`((*ubh_get_addr(ubh, (begin) + ((bit) >> 3)) >> ((bit) & 7)) & (0xff >> (UFS_MAXFRAG - uspi->s_fpb)))`
355
356			`/*`
357			`* Determine the number of available frags given a`
358			`* percentage to hold in reserve.`
359			`*/`
360			`static inline u64`
361			`ufs_freespace(struct ufs_sb_private_info *uspi, int percentreserved)`
362			`{`
363			`return ufs_blkstofrags(uspi->cs_total.cs_nbfree) +`
364			`uspi->cs_total.cs_nffree -`
365			`(uspi->s_dsize * (percentreserved) / 100);`
366			`}`
367
368			`/*`
369			`* Macros to access cylinder group array structures`
370			`*/`
371			`#define ubh_cg_blktot(ucpi,cylno) \`
372			`(((__fs32)ubh_get_addr(UCPI_UBH(ucpi), (ucpi)->c_btotoff + ((cylno) << 2))))`
373
374			`#define ubh_cg_blks(ucpi,cylno,rpos) \`
375			`(((__fs16)ubh_get_addr(UCPI_UBH(ucpi), \`
376			`(ucpi)->c_boff + (((cylno) * uspi->s_nrpos + (rpos)) << 1 ))))`
377
378			`/*`
379			`* Bitmap operations`
380			`* These functions work like classical bitmap operations.`
381			`* The difference is that we don't have the whole bitmap`
382			`* in one contiguous chunk of memory, but in several buffers.`
383			`* The parameters of each function are super_block, ufs_buffer_head and`
384			`* position of the beginning of the bitmap.`
385			`*/`
386			`#define ubh_setbit(ubh,begin,bit) \`
387			`(*ubh_get_addr(ubh, (begin) + ((bit) >> 3)) \|= (1 << ((bit) & 7)))`
388
389			`#define ubh_clrbit(ubh,begin,bit) \`
390			`(*ubh_get_addr (ubh, (begin) + ((bit) >> 3)) &= ~(1 << ((bit) & 7)))`
391
392			`#define ubh_isset(ubh,begin,bit) \`
393			`(*ubh_get_addr (ubh, (begin) + ((bit) >> 3)) & (1 << ((bit) & 7)))`
394
395			`#define ubh_isclr(ubh,begin,bit) (!ubh_isset(ubh,begin,bit))`
396
397			`#define ubh_find_first_zero_bit(ubh,begin,size) _ubh_find_next_zero_bit_(uspi,ubh,begin,size,0)`
398
399			`#define ubh_find_next_zero_bit(ubh,begin,size,offset) _ubh_find_next_zero_bit_(uspi,ubh,begin,size,offset)`
400			`static inline unsigned _ubh_find_next_zero_bit_(`
401			`struct ufs_sb_private_info * uspi, struct ufs_buffer_head * ubh,`
402			`unsigned begin, unsigned size, unsigned offset)`
403			`{`
404			`unsigned base, count, pos;`
405
406			`size -= offset;`
407			`begin <<= 3;`
408			`offset += begin;`
409			`base = offset >> uspi->s_bpfshift;`
410			`offset &= uspi->s_bpfmask;`
411			`for (;;) {`
412			`count = min_t(unsigned int, size + offset, uspi->s_bpf);`
413			`size -= count - offset;`
414			`pos = ext2_find_next_zero_bit (ubh->bh[base]->b_data, count, offset);`
415			`if (pos < count \|\| !size)`
416			`break;`
417			`base++;`
418			`offset = 0;`
419			`}`
420			`return (base << uspi->s_bpfshift) + pos - begin;`
421			`}`
422
423			`static inline unsigned find_last_zero_bit (unsigned char * bitmap,`
424			`unsigned size, unsigned offset)`
425			`{`
426			`unsigned bit, i;`
427			`unsigned char * mapp;`
428			`unsigned char map;`
429
430			`mapp = bitmap + (size >> 3);`
431			`map = *mapp--;`
432			`bit = 1 << (size & 7);`
433			`for (i = size; i > offset; i--) {`
434			`if ((map & bit) == 0)`
435			`break;`
436			`if ((i & 7) != 0) {`
437			`bit >>= 1;`
438			`} else {`
439			`map = *mapp--;`
440			`bit = 1 << 7;`
441			`}`
442			`}`
443			`return i;`
444			`}`
445
446			`#define ubh_find_last_zero_bit(ubh,begin,size,offset) _ubh_find_last_zero_bit_(uspi,ubh,begin,size,offset)`
447			`static inline unsigned _ubh_find_last_zero_bit_(`
448			`struct ufs_sb_private_info * uspi, struct ufs_buffer_head * ubh,`
449			`unsigned begin, unsigned start, unsigned end)`
450			`{`
451			`unsigned base, count, pos, size;`
452
453			`size = start - end;`
454			`begin <<= 3;`
455			`start += begin;`
456			`base = start >> uspi->s_bpfshift;`
457			`start &= uspi->s_bpfmask;`
458			`for (;;) {`
459			`count = min_t(unsigned int,`
460			`size + (uspi->s_bpf - start), uspi->s_bpf)`
461			`- (uspi->s_bpf - start);`
462			`size -= count;`
463			`pos = find_last_zero_bit (ubh->bh[base]->b_data,`
464			`start, start - count);`
465			`if (pos > start - count \|\| !size)`
466			`break;`
467			`base--;`
468			`start = uspi->s_bpf;`
469			`}`
470			`return (base << uspi->s_bpfshift) + pos - begin;`
471			`}`
472
473			`#define ubh_isblockclear(ubh,begin,block) (!_ubh_isblockset_(uspi,ubh,begin,block))`
474
475			`#define ubh_isblockset(ubh,begin,block) _ubh_isblockset_(uspi,ubh,begin,block)`
476			`static inline int _ubh_isblockset_(struct ufs_sb_private_info * uspi,`
477			`struct ufs_buffer_head * ubh, unsigned begin, unsigned block)`
478			`{`
479			`switch (uspi->s_fpb) {`
480			`case 8:`
481			`return (*ubh_get_addr (ubh, begin + block) == 0xff);`
482			`case 4:`
483			`return (*ubh_get_addr (ubh, begin + (block >> 1)) == (0x0f << ((block & 0x01) << 2)));`
484			`case 2:`
485			`return (*ubh_get_addr (ubh, begin + (block >> 2)) == (0x03 << ((block & 0x03) << 1)));`
486			`case 1:`
487			`return (*ubh_get_addr (ubh, begin + (block >> 3)) == (0x01 << (block & 0x07)));`
488			`}`
489			`return 0;`
490			`}`
491
492			`#define ubh_clrblock(ubh,begin,block) _ubh_clrblock_(uspi,ubh,begin,block)`
493			`static inline void _ubh_clrblock_(struct ufs_sb_private_info * uspi,`
494			`struct ufs_buffer_head * ubh, unsigned begin, unsigned block)`
495			`{`
496			`switch (uspi->s_fpb) {`
497			`case 8:`
498			`*ubh_get_addr (ubh, begin + block) = 0x00;`
499			`return;`
500			`case 4:`
501			`*ubh_get_addr (ubh, begin + (block >> 1)) &= ~(0x0f << ((block & 0x01) << 2));`
502			`return;`
503			`case 2:`
504			`*ubh_get_addr (ubh, begin + (block >> 2)) &= ~(0x03 << ((block & 0x03) << 1));`
505			`return;`
506			`case 1:`
507			`*ubh_get_addr (ubh, begin + (block >> 3)) &= ~(0x01 << ((block & 0x07)));`
508			`return;`
509			`}`
510			`}`
511
512			`#define ubh_setblock(ubh,begin,block) _ubh_setblock_(uspi,ubh,begin,block)`
513			`static inline void _ubh_setblock_(struct ufs_sb_private_info * uspi,`
514			`struct ufs_buffer_head * ubh, unsigned begin, unsigned block)`
515			`{`
516			`switch (uspi->s_fpb) {`
517			`case 8:`
518			`*ubh_get_addr(ubh, begin + block) = 0xff;`
519			`return;`
520			`case 4:`
521			`*ubh_get_addr(ubh, begin + (block >> 1)) \|= (0x0f << ((block & 0x01) << 2));`
522			`return;`
523			`case 2:`
524			`*ubh_get_addr(ubh, begin + (block >> 2)) \|= (0x03 << ((block & 0x03) << 1));`
525			`return;`
526			`case 1:`
527			`*ubh_get_addr(ubh, begin + (block >> 3)) \|= (0x01 << ((block & 0x07)));`
528			`return;`
529			`}`
530			`}`
531
532			`static inline void ufs_fragacct (struct super_block * sb, unsigned blockmap,`
533			`__fs32 * fraglist, int cnt)`
534			`{`
535			`struct ufs_sb_private_info * uspi;`
536			`unsigned fragsize, pos;`
537
538			`uspi = UFS_SB(sb)->s_uspi;`
539
540			`fragsize = 0;`
541			`for (pos = 0; pos < uspi->s_fpb; pos++) {`
542			`if (blockmap & (1 << pos)) {`
543			`fragsize++;`
544			`}`
545			`else if (fragsize > 0) {`
546			`fs32_add(sb, &fraglist[fragsize], cnt);`
547			`fragsize = 0;`
548			`}`
549			`}`
550			`if (fragsize > 0 && fragsize < uspi->s_fpb)`
551			`fs32_add(sb, &fraglist[fragsize], cnt);`
552			`}`
553
554			`static inline void ufs_get_direct_data_ptr(struct ufs_sb_private_info uspi,`
555			`struct ufs_inode_info *ufsi,`
556			`unsigned blk)`
557			`{`
558			`BUG_ON(blk > UFS_TIND_BLOCK);`
559			`return uspi->fs_magic == UFS2_MAGIC ?`
560			`(void *)&ufsi->i_u1.u2_i_data[blk] :`
561			`(void *)&ufsi->i_u1.i_data[blk];`
562			`}`
563
564			`static inline u64 ufs_data_ptr_to_cpu(struct super_block sb, void p)`
565			`{`
566			`return UFS_SB(sb)->s_uspi->fs_magic == UFS2_MAGIC ?`
567			`fs64_to_cpu(sb, (__fs64 )p) :`
568			`fs32_to_cpu(sb, (__fs32 )p);`
569			`}`
570
571			`static inline void ufs_cpu_to_data_ptr(struct super_block sb, void p, u64 val)`
572			`{`
573			`if (UFS_SB(sb)->s_uspi->fs_magic == UFS2_MAGIC)`
574			`(__fs64 )p = cpu_to_fs64(sb, val);`
575			`else`
576			`(__fs32 )p = cpu_to_fs32(sb, val);`
577			`}`
578
579			`static inline void ufs_data_ptr_clear(struct ufs_sb_private_info *uspi,`
580			`void *p)`
581			`{`
582			`if (uspi->fs_magic == UFS2_MAGIC)`
583			`(__fs64 )p = 0;`
584			`else`
585			`(__fs32 )p = 0;`
586			`}`
587
588			`static inline int ufs_is_data_ptr_zero(struct ufs_sb_private_info *uspi,`
589			`void *p)`
590			`{`
591			`if (uspi->fs_magic == UFS2_MAGIC)`
592			`return (__fs64 )p == 0;`
593			`else`
594			`return (__fs32 )p == 0;`
595			`}`