static int ext2fs_read_inode
(struct ext2_data *data, int ino, struct ext2_inode *inode) {
struct ext2_block_group blkgrp;
struct ext2_sblock *sblock = &data->sblock;
int inodes_per_block;
int status;
unsigned int blkno;
unsigned int blkoff;
/* It is easier to calculate if the first inode is 0. */
ino--;
#ifdef DEBUG
printf ("ext2fs read inode %d\n", ino);
#endif
status = ext2fs_blockgroup (data,
ino /
__le32_to_cpu (sblock->inodes_per_group),
&blkgrp);
if (status == 0) {
return (0);
}
#ifdef CFG_EXT2_SUPPORT_DYNAMIC_REV
inodes_per_block = EXT2_BLOCK_SIZE (data) / ext2_inode_size;
#else
inodes_per_block = EXT2_BLOCK_SIZE (data) / 128;
#endif
blkno = (ino % __le32_to_cpu (sblock->inodes_per_group)) /
inodes_per_block;
blkoff = (ino % __le32_to_cpu (sblock->inodes_per_group)) %
inodes_per_block;
#ifdef DEBUG
printf ("ext2fs read inode blkno %d blkoff %d\n", blkno, blkoff);
#endif
/* Read the inode. */
#ifdef CFG_EXT2_SUPPORT_DYNAMIC_REV
status = ext2fs_devread (((__le32_to_cpu (blkgrp.inode_table_id) +
blkno) << LOG2_EXT2_BLOCK_SIZE (data)),
ext2_inode_size * blkoff,
sizeof (struct ext2_inode), (char *) inode);
#else
status = ext2fs_devread (((__le32_to_cpu (blkgrp.inode_table_id) +
blkno) << LOG2_EXT2_BLOCK_SIZE (data)),
sizeof (struct ext2_inode) * blkoff,
sizeof (struct ext2_inode), (char *) inode);
#endif
if (status == 0) {
return (0);
}
return (1);
}
static quik_err_t
ext2fs_read_inode(struct ext2_data *data,
int ino,
struct ext2_inode *inode)
{
struct ext2_block_group blkgrp;
struct ext2_sblock *sblock = &data->sblock;
int inodes_per_block;
quik_err_t err;
unsigned int blkno;
unsigned int blkoff;
#ifdef DEBUG
printk ("ext2fs read inode %d, inode_size %d\n", ino, inode_size);
#endif
/* It is easier to calculate if the first inode is 0. */
ino--;
err = ext2fs_blockgroup(data, ino / __le32_to_cpu
(sblock->inodes_per_group), &blkgrp);
if (err != ERR_NONE) {
return err;
}
inodes_per_block = EXT2_BLOCK_SIZE(data) / inode_size;
blkno = __le32_to_cpu(blkgrp.inode_table_id) +
(ino % __le32_to_cpu(sblock->inodes_per_group))
/ inodes_per_block;
blkoff = (ino % inodes_per_block) * inode_size;
#ifdef DEBUG
printk ("ext2fs read inode blkno %d blkoff %d\n", blkno, blkoff);
#endif
/* Read the inode. */
err = part_read(data->part,
blkno << LOG2_EXT2_BLOCK_SIZE (data), blkoff,
sizeof(struct ext2_inode), (char *) inode);
if (err != ERR_NONE) {
return err;
}
return ERR_NONE;
}
static int ext2fs_read_inode
(struct ext2_data *data, int ino, struct ext2_inode *inode) {
struct ext2_block_group blkgrp;
struct ext2_sblock *sblock = &data->sblock;
int inodes_per_block;
int status;
unsigned int blkno;
unsigned int blkoff;
#ifdef DEBUG
printf ("ext2fs read inode %d, inode_size %d\n", ino, inode_size);
#endif
/* It is easier to calculate if the first inode is 0. */
ino--;
status = ext2fs_blockgroup (data, ino / __le32_to_cpu
(sblock->inodes_per_group), &blkgrp);
if (status == 0) {
return (0);
}
inodes_per_block = EXT2_BLOCK_SIZE(data) / inode_size;
blkno = __le32_to_cpu (blkgrp.inode_table_id) +
(ino % __le32_to_cpu (sblock->inodes_per_group))
/ inodes_per_block;
blkoff = (ino % inodes_per_block) * inode_size;
#ifdef DEBUG
printf ("ext2fs read inode blkno %d blkoff %d\n", blkno, blkoff);
#endif
/* Read the inode. */
status = ext2fs_devread (blkno << LOG2_EXT2_BLOCK_SIZE (data), blkoff,
sizeof (struct ext2_inode), (char *) inode);
if (status == 0) {
return (0);
}
return (1);
}