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udf: use sector_t and loff_t for file offsets

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Use sector_t and loff_t for file offsets in UDF filesystem.  Otherwise an
overflow may occur for long files.  Also make inode_bmap() return offset in
the extent in number of blocks instead of number of bytes - for most
callers this is more convenient.

Signed-off-by: Jan Kara <jack@suse.cz>
Acked-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Jan Kara
2007-05-08 00:35:13 -07:00
committed by Linus Torvalds
parent 277866a0e3
commit 60448b1d6d
6 changed files with 38 additions and 35 deletions
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12
fs/udf/namei.c
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@@ -156,7 +156,8 @@ udf_find_entry(struct inode *dir, struct dentry *dentry,
uint16_t liu;
loff_t size;
kernel_lb_addr bloc, eloc;
uint32_t extoffset, elen, offset;
uint32_t extoffset, elen;
sector_t offset;
struct buffer_head *bh = NULL;
size = (udf_ext0_offset(dir) + dir->i_size) >> 2;
@@ -168,7 +169,6 @@ udf_find_entry(struct inode *dir, struct dentry *dentry,
else if (inode_bmap(dir, f_pos >> (dir->i_sb->s_blocksize_bits - 2),
&bloc, &extoffset, &eloc, &elen, &offset, &bh) == (EXT_RECORDED_ALLOCATED >> 30))
{
offset >>= dir->i_sb->s_blocksize_bits;
block = udf_get_lb_pblock(dir->i_sb, eloc, offset);
if ((++offset << dir->i_sb->s_blocksize_bits) < elen)
{
@@ -354,7 +354,8 @@ udf_add_entry(struct inode *dir, struct dentry *dentry,
uint16_t liu;
int block;
kernel_lb_addr bloc, eloc;
uint32_t extoffset, elen, offset;
uint32_t extoffset, elen;
sector_t offset;
struct buffer_head *bh = NULL;
sb = dir->i_sb;
@@ -386,7 +387,6 @@ udf_add_entry(struct inode *dir, struct dentry *dentry,
else if (inode_bmap(dir, f_pos >> (dir->i_sb->s_blocksize_bits - 2),
&bloc, &extoffset, &eloc, &elen, &offset, &bh) == (EXT_RECORDED_ALLOCATED >> 30))
{
offset >>= dir->i_sb->s_blocksize_bits;
block = udf_get_lb_pblock(dir->i_sb, eloc, offset);
if ((++offset << dir->i_sb->s_blocksize_bits) < elen)
{
@@ -782,7 +782,8 @@ static int empty_dir(struct inode *dir)
loff_t size = (udf_ext0_offset(dir) + dir->i_size) >> 2;
int block;
kernel_lb_addr bloc, eloc;
uint32_t extoffset, elen, offset;
uint32_t extoffset, elen;
sector_t offset;
struct buffer_head *bh = NULL;
f_pos = (udf_ext0_offset(dir) >> 2);
@@ -794,7 +795,6 @@ static int empty_dir(struct inode *dir)
else if (inode_bmap(dir, f_pos >> (dir->i_sb->s_blocksize_bits - 2),
&bloc, &extoffset, &eloc, &elen, &offset, &bh) == (EXT_RECORDED_ALLOCATED >> 30))
{
offset >>= dir->i_sb->s_blocksize_bits;
block = udf_get_lb_pblock(dir->i_sb, eloc, offset);
if ((++offset << dir->i_sb->s_blocksize_bits) < elen)
{