linux-kernel - Re: [PATCH 02/18] xstat: Add a pair of system calls to make extended file stats available [ver #6]

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: <AANLkTi=JvwrwpmteFcXW1f5s95+_w_iCT+04Sy7bbTtR@mail.gmail.com>
Date:	Mon, 2 Aug 2010 10:09:49 -0400
From:	Greg Freemyer <greg.freemyer@...il.com>
To:	Jeff Layton <jlayton@...hat.com>
Cc:	Neil Brown <neilb@...e.de>, David Howells <dhowells@...hat.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Jan Engelhardt <jengelh@...ozas.de>,
	Jeremy Allison <jra@...ba.org>, Volker.Lendecke@...net.de,
	linux-cifs@...r.kernel.org, linux-nfs@...r.kernel.org,
	samba-technical@...ts.samba.org, linux-kernel@...r.kernel.org,
	viro@...iv.linux.org.uk, linux-fsdevel@...r.kernel.org,
	linux-ext4@...r.kernel.org
Subject: Re: [PATCH 02/18] xstat: Add a pair of system calls to make extended 
	file stats available [ver #6]

> Furthermore, I'll go ahead and propose the following (simple) semantics:
>
> 1) birthtime is initialized to the current time when a new inode is
> created
>
> 2) it's settable via the xattr to an arbitrary value
>
> Either way, the xattr for this ought to be named the same on all
> filesystems. Samba shouldn't need to know or care what the underlying
> filesystem is, as long as it presents the correct xattr.
>
> That should make samba happy, and be reasonably simple to implement.

Is there any reason to allow birthtime to be set in advance of the
current birthtime?

ie restore / copy tools clearly need to backdate it, but I'd prefer to
see it not advance-able.

Greg
--
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/