Hi there!
I've been trying to write a kernel module that is capable of locating a specific mounted filesystem (ext2/3) and dump all the inode entries that are in use. I have two questions:
1) Is it possible to know if an inode is free just by looking to its (struct ext3_inode) info or do I have to check the inode bitmap for the specific block group?
2) Does the following look correct?
--------8<--------
struct vfsmount *mountpoint = ... // fetch this from the proper namespace
struct ext3_sb_info *sbi = EXT3_SB(mountpoint->mnt_sb);
struct ext3_group_desc *egd;
struct ext3_inode *ino;
struct buffer_head *bh;
int i, j, k;
for (i=0; i<sbi->s_groups_count; i++) {
egd = ext3_get_group_desc(mountpoint->mnt_sb, i, NULL);
for (j=0; j<(sbi->s_inodes_per_group)/(sbi->s_inodes_per_block); j++) {
bh = sb_getblk(mountpoint->mnt_sb, le32_to_cpu(egd->bg_inode_table+j));
for (k=0; k<sbi->s_inodes_per_block; k++) {
ino = (struct ext3_inode *)(bh+(k*sizeof(struct ext3_inode)));
// dump contents of ino
// index of ino should be: (i*(sbi->s_inodes_per_group)) + (j*(sbi->s_inodes_per_block)) + k
}
}
}
--------8<--------
Cheers,
Felipe
--
To unsubscribe from this list: send the line "unsubscribe linux-ext4" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
