lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [day] [month] [year] [list]
Date:	Wed, 12 Nov 2008 11:48:36 -0500
From:	Valerie Aurora Henson <vaurora@...hat.com>
To:	Theodore Tso <tytso@....edu>
Cc:	linux-ext4@...r.kernel.org, "Jose R. Santos" <jrs@...ibm.com>
Subject: Re: 64-bit dblists

On Sun, Nov 02, 2008 at 10:09:36PM -0500, Theodore Tso wrote:
> On Mon, Oct 27, 2008 at 04:59:10PM -0400, Valerie Aurora Henson wrote:
> > Hi all,
> > 
> > In my continuing quest to finish the 64-bit conversion of e2fsprogs, I
> > ran into this structure exported in ext2fs.h:
> > 
> > struct ext2_db_entry {
> >         ext2_ino_t      ino;
> >         blk_t   blk;
> >         int     blockcnt;
> > };
> > 
> > The "blk_t" is the problem here - we need a blk64_t.  A pointer to
> > this structure is passed to the user-provided directory block iterator
> > in ext2fs_dblist_iterate().
> > 
> > Assuming the goal is to preserve the ext2fs_dblist ABI, I can see two
> > ways of doing this:
> > 
> > 1. Define ext2_db_entry2, ext2_dblist2, and ext2fs_dblist_*2() and do
> > the usual translation/conversion function business.
> 
> The dblist.c and dblist_dir.c functions are so small that it's
> probably not worth it to do translaction/conversation functions; it's
> basically just a linked list convenience function implementation.
> 
> My suggestion is to just create a dblist2.c and dblist_dir2.c, and
> just make a 64-bit version of the directory block list abstraction.
> My guess that size of the conversaion functions would be bigger than a
> new 64-bit version of the abstraction.  (The object size of dblist.o
> and dblist_dir.o combined is only about 1.5k)

Thanks!  This is what I'm doing currently.

-VAL
--
To unsubscribe from this list: send the line "unsubscribe linux-ext4" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html

Powered by blists - more mailing lists