Right! That really helped! It works :D.
Now I'll try to actually write something to this inode and I'll let you
know if I succeed.
Thank you so much,
Donato
On Tue, 2009-07-07 at 19:21 +0530, Manish Katiyar wrote:
> On Tue, Jul 7, 2009 at 6:16 PM, Donato Capitella<d.capitella@xxxxxx> wrote:
> > On Tue, 2009-07-07 at 15:46 +0530, Manish Katiyar wrote:
> >> On Tue, Jul 7, 2009 at 3:21 PM, Donato Capitella<d.capitella@xxxxxx> wrote:
> >> > On Tue, 2009-07-07 at 15:10 +0530, Manish Katiyar wrote:
> >> >> On Tue, Jul 7, 2009 at 2:41 PM, Donato Capitella<d.capitella@xxxxxx> wrote:
> >> >> >
> >> >> > It doesn't crash, but stops on the first error, after the ext3_iget()
> >> >> > call and returns NULL.
> >> >>
> >> >> Can you also add print the value of journal after it is returned from
> >> >> ext3_iget() in debug statement. It will have the error code and will
> >> >> help to trace the problem.
> >> > journal after calling ext3_iget() has value -5.
> >>
> >> OK.... I think I understand your problem. My guess is that you chose
> >> the inode number to be 3 , but forgot to update the below function
> >>
> >> static inline int ext3_valid_inum(struct super_block *sb, unsigned
> >> long ino)
> >> {
> >> return ino == EXT3_ROOT_INO ||
> >> ino == EXT3_JOURNAL_INO ||
> >> ino == EXT3_RESIZE_INO ||
> >> (ino >= EXT3_FIRST_INO(sb) &&
> >> ino <= le32_to_cpu(EXT3_SB(sb)->s_es->s_inodes_count));
> >> }
> >
> > Thanks, this helped. I just modified ext3_valid_inum() to accept inode
> > 3. Unfortunatelly, now I get error -116.
>
> And this time you are probably hitting this code in ext3_iget()
> because you forgot to initialize inode->i_nlink.
>
> if (inode->i_nlink == 0) {
> if (inode->i_mode == 0 ||
> !(EXT3_SB(inode->i_sb)->s_mount_state & EXT3_ORPHAN_FS)) {
> /* this inode is deleted */
> brelse (bh);
> ret = -ESTALE;
> goto bad_inode;
> }
> /* The only unlinked inodes we let through here have
> * valid i_mode and are being read by the orphan
> * recovery code: that's fine, we're about to complete
> * the process of deleting those. */
> }
>
> > How do I understand what this
> > error corresponds to? Is it documented somewhere?
>
> This error corresponds to -ESTALE. See the file
> include/asm-generic/errno.h in kernel source tree.
>
> Hope that helps
>
> Thanks -
> Manish
>
> >
> >
>
>
>
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