forked from Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
606 lines
17 KiB
606 lines
17 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
|
/* |
|
* linux/fs/ufs/util.h |
|
* |
|
* Copyright (C) 1998 |
|
* Daniel Pirkl <[email protected]> |
|
* 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); |
|
fallthrough; /* 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; |
|
} |
|
fallthrough; /* 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); |
|
fallthrough; |
|
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; |
|
fallthrough; |
|
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_sgid == 0xFFFF) |
|
return fs32_to_cpu(sb, inode->ui_u3.ui_sun.ui_gid); |
|
fallthrough; |
|
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; |
|
fallthrough; |
|
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_prepare_chunk(struct page *page, loff_t pos, unsigned len); |
|
|
|
/* |
|
* 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_sync_block(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); |
|
put_page(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))) |
|
|
|
static inline u64 |
|
ufs_freefrags(struct ufs_sb_private_info *uspi) |
|
{ |
|
return ufs_blkstofrags(uspi->cs_total.cs_nbfree) + |
|
uspi->cs_total.cs_nffree; |
|
} |
|
|
|
/* |
|
* 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 = find_next_zero_bit_le(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) |
|
{ |
|
u8 mask; |
|
switch (uspi->s_fpb) { |
|
case 8: |
|
return (*ubh_get_addr (ubh, begin + block) == 0xff); |
|
case 4: |
|
mask = 0x0f << ((block & 0x01) << 2); |
|
return (*ubh_get_addr (ubh, begin + (block >> 1)) & mask) == mask; |
|
case 2: |
|
mask = 0x03 << ((block & 0x03) << 1); |
|
return (*ubh_get_addr (ubh, begin + (block >> 2)) & mask) == mask; |
|
case 1: |
|
mask = 0x01 << (block & 0x07); |
|
return (*ubh_get_addr (ubh, begin + (block >> 3)) & mask) == mask; |
|
} |
|
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; |
|
} |
|
|
|
static inline __fs32 ufs_get_seconds(struct super_block *sbp) |
|
{ |
|
time64_t now = ktime_get_real_seconds(); |
|
|
|
/* Signed 32-bit interpretation wraps around in 2038, which |
|
* happens in ufs1 inode stamps but not ufs2 using 64-bits |
|
* stamps. For superblock and blockgroup, let's assume |
|
* unsigned 32-bit stamps, which are good until y2106. |
|
* Wrap around rather than clamp here to make the dirty |
|
* file system detection work in the superblock stamp. |
|
*/ |
|
return cpu_to_fs32(sbp, lower_32_bits(now)); |
|
}
|
|
|