Re: [PATCH 13/35] fallthru: ext2 fallthru support

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Tue, Apr 20, Jamie Lokier wrote:

> Miklos Szeredi wrote:
> > On Mon, 19 Apr 2010, Valerie Aurora wrote:
> > > I don't recall there being any technical reason not to look up the
> > > real inode number.  I just wrote it that we because I was lazy.  So I
> > > like returning the directory's d_ino better than a single magic
> > > number, but I'd at least like to try returning the real inode number
> > > too.
> > 
> > Note, "struct dirent" doesn't have d_dev, so you really can't return
> > the "real" inode number, that's on a different filesystem and just a
> > random number in the context of the the readdir in question.
> 
> Agree.  Does this inappropriate inode number for the union mount's
> st_dev happen with stat() on the actual files too?  That could be bad.

No, for stat() you do a lookup and that is returning the correct dentry/inode
for the filesystem the name is on.

We just return the the fallthru directory entries to give userspace an offset
that they can seekdir() to.

Regards,
	Jan

-- 
Jan Blunck <jblunck@xxxxxxx>
--
To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html

[Index of Archives]     [Linux Ext4 Filesystem]     [Union Filesystem]     [Filesystem Testing]     [Ceph Users]     [Ecryptfs]     [AutoFS]     [Kernel Newbies]     [Share Photos]     [Security]     [Netfilter]     [Bugtraq]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux Cachefs]     [Reiser Filesystem]     [Linux RAID]     [Samba]     [Device Mapper]     [CEPH Development]
  Powered by Linux