linux-kernel - Re: [PATCH 00/52] Introduce credential record

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 for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <22130.1192311975@redhat.com>
Date:	Sat, 13 Oct 2007 22:46:15 +0100
From:	David Howells <dhowells@...hat.com>
To:	Theodore Tso <tytso@....edu>
Cc:	dhowells@...hat.com, viro@....linux.org.uk, kwc@...i.umich.edu,
	Trond.Myklebust@...app.com, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 00/52] Introduce credential record

Theodore Tso <tytso@....edu> wrote:

>    I'm going to ask a stupid question, and I probably missed something
> in the 52 patches, but....  I see how the credential is used to do
> access checks, but why does the credentials record need to passed all
> the way into block allocator?  What is it used for there?

Ext2, 3 & 4 use it to determine whether someone has the right to use the
reserved space according to whether their UID/GID match those in the
superblock.

See ext3_has_free_blocks() for an example.

David
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/