linux-ext4 - Re: ext4_inode difference between e2fsprogs and ext4

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 linux-cve-announce 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]

Message-ID: <20071011091948.GQ8122@schatzie.adilger.int>
Date:	Thu, 11 Oct 2007 03:19:48 -0600
From:	Andreas Dilger <adilger@...sterfs.com>
To:	"Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com>
Cc:	Theodore Tso <tytso@....edu>,
	linux-ext4 <linux-ext4@...r.kernel.org>,
	Mingming Cao <cmm@...ibm.com>
Subject: Re: ext4_inode difference between e2fsprogs and ext4

On Oct 11, 2007  14:30 +0530, Aneesh Kumar K.V wrote:
> In ext4 we have
> 
>  union { 
>                struct {
>                        __le16  l_i_reserved1;  /* Obsoleted fragment 
>                        number/size which are removed in ext4 */
>                        __le16  l_i_file_acl_high;
>                        __le16  l_i_uid_high;   /* these 2 fields */
>                        __le16  l_i_gid_high;   /* were reserved2[0] */
>                        __u32   l_i_reserved2;
>                } linux2;
> 
> 
> Last week we were discussing about taking that l_i_reserved1 and using that 
> for making file_acl 64 bit and using the lower l_i_reserved2 for 64 bit dir_acl. 

We have l_i_file_acl_high already to give us 48-bit i_file_acl, which is
sufficient, IMHO.  There is no need to have a larger i_dir_acl since this
field is only really used for i_size_high and should be renamed as such
instead of just being a macro.

> Now where will i put l_i_blocks_hi ?

Just where it is now - in l_i_reserved1...

Cheers, Andreas
--
Andreas Dilger
Principal Software Engineer
Cluster File Systems, Inc.

-
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