#include "udfdecl.h"
#include <linux/fs.h>
#include <linux/mm.h>
-#include <linux/udf_fs.h>
#include <linux/buffer_head.h>
#include "udf_i.h"
kernel_lb_addr eloc, int8_t etype, uint32_t elen,
uint32_t nelen)
{
- kernel_lb_addr neloc = { 0, 0 };
- int last_block =
- (elen + inode->i_sb->s_blocksize -
- 1) >> inode->i_sb->s_blocksize_bits;
- int first_block =
- (nelen + inode->i_sb->s_blocksize -
- 1) >> inode->i_sb->s_blocksize_bits;
+ kernel_lb_addr neloc = {};
+ int last_block = (elen + inode->i_sb->s_blocksize - 1) >>
+ inode->i_sb->s_blocksize_bits;
+ int first_block = (nelen + inode->i_sb->s_blocksize - 1) >>
+ inode->i_sb->s_blocksize_bits;
if (nelen) {
if (etype == (EXT_NOT_RECORDED_ALLOCATED >> 30)) {
*/
void udf_truncate_tail_extent(struct inode *inode)
{
- struct extent_position epos = { NULL, 0, {0, 0} };
+ struct extent_position epos = {};
kernel_lb_addr eloc;
uint32_t elen, nelen;
uint64_t lbcount = 0;
int8_t etype = -1, netype;
int adsize;
+ struct udf_inode_info *iinfo = UDF_I(inode);
- if (UDF_I_ALLOCTYPE(inode) == ICBTAG_FLAG_AD_IN_ICB ||
- inode->i_size == UDF_I_LENEXTENTS(inode))
+ if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB ||
+ inode->i_size == iinfo->i_lenExtents)
return;
/* Are we going to delete the file anyway? */
if (inode->i_nlink == 0)
return;
- if (UDF_I_ALLOCTYPE(inode) == ICBTAG_FLAG_AD_SHORT)
+ if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_SHORT)
adsize = sizeof(short_ad);
- else if (UDF_I_ALLOCTYPE(inode) == ICBTAG_FLAG_AD_LONG)
+ else if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_LONG)
adsize = sizeof(long_ad);
else
BUG();
}
/* This inode entry is in-memory only and thus we don't have to mark
* the inode dirty */
- UDF_I_LENEXTENTS(inode) = inode->i_size;
+ iinfo->i_lenExtents = inode->i_size;
brelse(epos.bh);
}
uint64_t lbcount = 0;
int8_t etype = -1, netype;
int adsize;
+ struct udf_inode_info *iinfo = UDF_I(inode);
- if (UDF_I_ALLOCTYPE(inode) == ICBTAG_FLAG_AD_IN_ICB ||
- inode->i_size == UDF_I_LENEXTENTS(inode))
+ if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB ||
+ inode->i_size == iinfo->i_lenExtents)
return;
- if (UDF_I_ALLOCTYPE(inode) == ICBTAG_FLAG_AD_SHORT)
+ if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_SHORT)
adsize = sizeof(short_ad);
- else if (UDF_I_ALLOCTYPE(inode) == ICBTAG_FLAG_AD_LONG)
+ else if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_LONG)
adsize = sizeof(long_ad);
else
adsize = 0;
- epos.block = UDF_I_LOCATION(inode);
+ epos.block = iinfo->i_location;
/* Find the last extent in the file */
while ((netype = udf_next_aext(inode, &epos, &eloc, &elen, 1)) != -1) {
lbcount -= elen;
extent_trunc(inode, &epos, eloc, etype, elen, 0);
if (!epos.bh) {
- UDF_I_LENALLOC(inode) =
- epos.offset - udf_file_entry_alloc_offset(inode);
+ iinfo->i_lenAlloc =
+ epos.offset -
+ udf_file_entry_alloc_offset(inode);
mark_inode_dirty(inode);
} else {
struct allocExtDesc *aed =
- (struct allocExtDesc *)(epos.bh->b_data);
+ (struct allocExtDesc *)(epos.bh->b_data);
aed->lengthAllocDescs =
- cpu_to_le32(epos.offset -
- sizeof(struct allocExtDesc));
- if (!UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_STRICT)
- || UDF_SB_UDFREV(inode->i_sb) >= 0x0201)
+ cpu_to_le32(epos.offset -
+ sizeof(struct allocExtDesc));
+ if (!UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_STRICT) ||
+ UDF_SB(inode->i_sb)->s_udfrev >= 0x0201)
udf_update_tag(epos.bh->b_data, epos.offset);
else
udf_update_tag(epos.bh->b_data,
}
/* This inode entry is in-memory only and thus we don't have to mark
* the inode dirty */
- UDF_I_LENEXTENTS(inode) = lbcount;
+ iinfo->i_lenExtents = lbcount;
brelse(epos.bh);
}
+static void udf_update_alloc_ext_desc(struct inode *inode,
+ struct extent_position *epos,
+ u32 lenalloc)
+{
+ struct super_block *sb = inode->i_sb;
+ struct udf_sb_info *sbi = UDF_SB(sb);
+
+ struct allocExtDesc *aed = (struct allocExtDesc *) (epos->bh->b_data);
+ int len = sizeof(struct allocExtDesc);
+
+ aed->lengthAllocDescs = cpu_to_le32(lenalloc);
+ if (!UDF_QUERY_FLAG(sb, UDF_FLAG_STRICT) || sbi->s_udfrev >= 0x0201)
+ len += lenalloc;
+
+ udf_update_tag(epos->bh->b_data, len);
+ mark_buffer_dirty_inode(epos->bh, inode);
+}
+
void udf_truncate_extents(struct inode *inode)
{
struct extent_position epos;
- kernel_lb_addr eloc, neloc = { 0, 0 };
+ kernel_lb_addr eloc, neloc = {};
uint32_t elen, nelen = 0, indirect_ext_len = 0, lenalloc;
int8_t etype;
struct super_block *sb = inode->i_sb;
sector_t first_block = inode->i_size >> sb->s_blocksize_bits, offset;
loff_t byte_offset;
int adsize;
+ struct udf_inode_info *iinfo = UDF_I(inode);
- if (UDF_I_ALLOCTYPE(inode) == ICBTAG_FLAG_AD_SHORT)
+ if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_SHORT)
adsize = sizeof(short_ad);
- else if (UDF_I_ALLOCTYPE(inode) == ICBTAG_FLAG_AD_LONG)
+ else if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_LONG)
adsize = sizeof(long_ad);
else
BUG();
etype = inode_bmap(inode, first_block, &epos, &eloc, &elen, &offset);
- byte_offset =
- (offset << sb->s_blocksize_bits) +
- (inode->i_size & (sb->s_blocksize - 1));
+ byte_offset = (offset << sb->s_blocksize_bits) +
+ (inode->i_size & (sb->s_blocksize - 1));
if (etype != -1) {
epos.offset -= adsize;
extent_trunc(inode, &epos, eloc, etype, elen, byte_offset);
else
lenalloc -= sizeof(struct allocExtDesc);
- while ((etype =
- udf_current_aext(inode, &epos, &eloc, &elen,
- 0)) != -1) {
+ while ((etype = udf_current_aext(inode, &epos, &eloc,
+ &elen, 0)) != -1) {
if (etype == (EXT_NEXT_EXTENT_ALLOCDECS >> 30)) {
udf_write_aext(inode, &epos, neloc, nelen, 0);
if (indirect_ext_len) {
/* We managed to free all extents in the
* indirect extent - free it too */
- if (!epos.bh)
- BUG();
+ BUG_ON(!epos.bh);
udf_free_blocks(sb, inode, epos.block,
0, indirect_ext_len);
- } else {
- if (!epos.bh) {
- UDF_I_LENALLOC(inode) =
- lenalloc;
- mark_inode_dirty(inode);
- } else {
- struct allocExtDesc *aed =
- (struct allocExtDesc
- *)(epos.bh->b_data);
- aed->lengthAllocDescs =
- cpu_to_le32(lenalloc);
- if (!UDF_QUERY_FLAG
- (sb, UDF_FLAG_STRICT)
- || UDF_SB_UDFREV(sb) >=
- 0x0201)
- udf_update_tag(epos.bh->
- b_data,
- lenalloc
- +
- sizeof
- (struct
- allocExtDesc));
- else
- udf_update_tag(epos.bh->
- b_data,
- sizeof
- (struct
- allocExtDesc));
- mark_buffer_dirty_inode(epos.bh,
- inode);
- }
- }
+ } else if (!epos.bh) {
+ iinfo->i_lenAlloc = lenalloc;
+ mark_inode_dirty(inode);
+ } else
+ udf_update_alloc_ext_desc(inode,
+ &epos, lenalloc);
brelse(epos.bh);
epos.offset = sizeof(struct allocExtDesc);
epos.block = eloc;
- epos.bh =
- udf_tread(sb,
- udf_get_lb_pblock(sb, eloc, 0));
+ epos.bh = udf_tread(sb,
+ udf_get_lb_pblock(sb, eloc, 0));
if (elen)
- indirect_ext_len = (elen +
- sb->s_blocksize -
- 1) >> sb->
- s_blocksize_bits;
+ indirect_ext_len =
+ (elen + sb->s_blocksize - 1) >>
+ sb->s_blocksize_bits;
else
indirect_ext_len = 1;
} else {
- extent_trunc(inode, &epos, eloc, etype, elen,
- 0);
+ extent_trunc(inode, &epos, eloc, etype,
+ elen, 0);
epos.offset += adsize;
}
}
if (indirect_ext_len) {
- if (!epos.bh)
- BUG();
+ BUG_ON(!epos.bh);
udf_free_blocks(sb, inode, epos.block, 0,
indirect_ext_len);
- } else {
- if (!epos.bh) {
- UDF_I_LENALLOC(inode) = lenalloc;
- mark_inode_dirty(inode);
- } else {
- struct allocExtDesc *aed =
- (struct allocExtDesc *)(epos.bh->b_data);
- aed->lengthAllocDescs = cpu_to_le32(lenalloc);
- if (!UDF_QUERY_FLAG(sb, UDF_FLAG_STRICT)
- || UDF_SB_UDFREV(sb) >= 0x0201)
- udf_update_tag(epos.bh->b_data,
- lenalloc +
- sizeof(struct
- allocExtDesc));
- else
- udf_update_tag(epos.bh->b_data,
- sizeof(struct
- allocExtDesc));
- mark_buffer_dirty_inode(epos.bh, inode);
- }
- }
+ } else if (!epos.bh) {
+ iinfo->i_lenAlloc = lenalloc;
+ mark_inode_dirty(inode);
+ } else
+ udf_update_alloc_ext_desc(inode, &epos, lenalloc);
} else if (inode->i_size) {
if (byte_offset) {
kernel_long_ad extent;
* no extent above inode->i_size => truncate is
* extending the file by 'offset' blocks.
*/
- if ((!epos.bh
- && epos.offset ==
- udf_file_entry_alloc_offset(inode)) || (epos.bh
- && epos.
- offset ==
- sizeof
- (struct
- allocExtDesc)))
- {
+ if ((!epos.bh &&
+ epos.offset ==
+ udf_file_entry_alloc_offset(inode)) ||
+ (epos.bh && epos.offset ==
+ sizeof(struct allocExtDesc))) {
/* File has no extents at all or has empty last
* indirect extent! Create a fake extent... */
extent.extLocation.logicalBlockNum = 0;
extent.extLocation.partitionReferenceNum = 0;
extent.extLength =
- EXT_NOT_RECORDED_NOT_ALLOCATED;
+ EXT_NOT_RECORDED_NOT_ALLOCATED;
} else {
epos.offset -= adsize;
etype = udf_next_aext(inode, &epos,
}
udf_extend_file(inode, &epos, &extent,
offset +
- ((inode->
- i_size & (sb->s_blocksize - 1)) !=
- 0));
+ ((inode->i_size &
+ (sb->s_blocksize - 1)) != 0));
}
}
- UDF_I_LENEXTENTS(inode) = inode->i_size;
+ iinfo->i_lenExtents = inode->i_size;
brelse(epos.bh);
}
projects / linux-2.6-omap-h63xx.git / blobdiff