const char *name, int namelen, int *ofs)
{
int nbuckets = (dir->i_size - OMFS_DIR_START)/8;
- int block = clus_to_blk(OMFS_SB(dir->i_sb), dir->i_ino);
int bucket = omfs_hash(name, namelen, nbuckets);
*ofs = OMFS_DIR_START + bucket * 8;
- return sb_bread(dir->i_sb, block);
+ return omfs_bread(dir->i_sb, dir->i_ino);
}
static struct buffer_head *omfs_scan_list(struct inode *dir, u64 block,
*prev_block = ~0;
while (block != ~0) {
- bh = sb_bread(dir->i_sb,
- clus_to_blk(OMFS_SB(dir->i_sb), block));
+ bh = omfs_bread(dir->i_sb, block);
if (!bh) {
err = -EIO;
goto err;
int omfs_make_empty(struct inode *inode, struct super_block *sb)
{
struct omfs_sb_info *sbi = OMFS_SB(sb);
- int block = clus_to_blk(sbi, inode->i_ino);
struct buffer_head *bh;
struct omfs_inode *oi;
- bh = sb_bread(sb, block);
+ bh = omfs_bread(sb, inode->i_ino);
if (!bh)
return -ENOMEM;
brelse(bh);
/* now set the sibling and parent pointers on the new inode */
- bh = sb_bread(dir->i_sb, clus_to_blk(OMFS_SB(dir->i_sb), inode->i_ino));
+ bh = omfs_bread(dir->i_sb, inode->i_ino);
if (!bh)
goto out;
if (prev != ~0) {
/* found in middle of list, get list ptr */
brelse(bh);
- bh = sb_bread(dir->i_sb,
- clus_to_blk(OMFS_SB(dir->i_sb), prev));
+ bh = omfs_bread(dir->i_sb, prev);
if (!bh)
goto out;
u64 *ptr;
int i;
- bh = sb_bread(inode->i_sb, clus_to_blk(OMFS_SB(inode->i_sb),
- inode->i_ino));
+ bh = omfs_bread(inode->i_sb, inode->i_ino);
if (!bh)
return 0;
/* follow chain in this bucket */
while (fsblock != ~0) {
- bh = sb_bread(dir->i_sb, clus_to_blk(OMFS_SB(dir->i_sb),
- fsblock));
+ bh = omfs_bread(dir->i_sb, fsblock);
if (!bh)
goto out;
hchain = (filp->f_pos >> 20) - 1;
hindex = filp->f_pos & 0xfffff;
- bh = sb_bread(dir->i_sb, clus_to_blk(OMFS_SB(dir->i_sb), dir->i_ino));
+ bh = omfs_bread(dir->i_sb, dir->i_ino);
if (!bh)
goto out;
if (inode->i_size != 0)
goto out;
- bh = sb_bread(inode->i_sb, clus_to_blk(sbi, next));
+ bh = omfs_bread(inode->i_sb, next);
if (!bh)
goto out;
if (next == ~0)
break;
- bh = sb_bread(inode->i_sb, clus_to_blk(sbi, next));
+ bh = omfs_bread(inode->i_sb, next);
if (!bh)
goto out;
oe = (struct omfs_extent *) (&bh->b_data[OMFS_EXTENT_CONT]);
int remain;
ret = -EIO;
- bh = sb_bread(inode->i_sb, clus_to_blk(sbi, inode->i_ino));
+ bh = omfs_bread(inode->i_sb, inode->i_ino);
if (!bh)
goto out;
break;
brelse(bh);
- bh = sb_bread(inode->i_sb, clus_to_blk(sbi, next));
+ bh = omfs_bread(inode->i_sb, next);
if (!bh)
goto out;
oe = (struct omfs_extent *) (&bh->b_data[OMFS_EXTENT_CONT]);
MODULE_DESCRIPTION("OMFS (ReplayTV/Karma) Filesystem for Linux");
MODULE_LICENSE("GPL");
+struct buffer_head *omfs_bread(struct super_block *sb, sector_t block)
+{
+ struct omfs_sb_info *sbi = OMFS_SB(sb);
+ if (block >= sbi->s_num_blocks)
+ return NULL;
+
+ return sb_bread(sb, clus_to_blk(sbi, block));
+}
+
struct inode *omfs_new_inode(struct inode *dir, int mode)
{
struct inode *inode;
struct omfs_inode *oi;
struct omfs_sb_info *sbi = OMFS_SB(inode->i_sb);
struct buffer_head *bh, *bh2;
- unsigned int block;
u64 ctime;
int i;
int ret = -EIO;
int sync_failed = 0;
/* get current inode since we may have written sibling ptrs etc. */
- block = clus_to_blk(sbi, inode->i_ino);
- bh = sb_bread(inode->i_sb, block);
+ bh = omfs_bread(inode->i_sb, inode->i_ino);
if (!bh)
goto out;
/* if mirroring writes, copy to next fsblock */
for (i = 1; i < sbi->s_mirrors; i++) {
- bh2 = sb_bread(inode->i_sb, block + i *
- (sbi->s_blocksize / sbi->s_sys_blocksize));
+ bh2 = omfs_bread(inode->i_sb, inode->i_ino + i);
if (!bh2)
goto out_brelse;
struct omfs_sb_info *sbi = OMFS_SB(sb);
struct omfs_inode *oi;
struct buffer_head *bh;
- unsigned int block;
u64 ctime;
unsigned long nsecs;
struct inode *inode;
if (!(inode->i_state & I_NEW))
return inode;
- block = clus_to_blk(sbi, ino);
- bh = sb_bread(inode->i_sb, block);
+ bh = omfs_bread(inode->i_sb, ino);
if (!bh)
goto iget_failed;
goto nomem;
block = clus_to_blk(sbi, sbi->s_bitmap_ino);
+ if (block >= sbi->s_num_blocks)
+ goto nomem;
+
ptr = sbi->s_imap;
for (count = bitmap_size; count > 0; count -= sb->s_blocksize) {
bh = sb_bread(sb, block++);
struct omfs_root_block *omfs_rb;
struct omfs_sb_info *sbi;
struct inode *root;
- sector_t start;
int ret = -EINVAL;
save_mount_options(sb, (char *) data);
sbi->s_block_shift = get_bitmask_order(sbi->s_blocksize) -
get_bitmask_order(sbi->s_sys_blocksize);
- start = clus_to_blk(sbi, be64_to_cpu(omfs_sb->s_root_block));
- bh2 = sb_bread(sb, start);
+ bh2 = omfs_bread(sb, be64_to_cpu(omfs_sb->s_root_block));
if (!bh2)
goto out_brelse_bh;
extern int omfs_shrink_inode(struct inode *inode);
/* inode.c */
+extern struct buffer_head *omfs_bread(struct super_block *sb, sector_t block);
extern struct inode *omfs_iget(struct super_block *sb, ino_t inode);
extern struct inode *omfs_new_inode(struct inode *dir, int mode);
extern int omfs_reserve_block(struct super_block *sb, sector_t block);