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] [thread-next>] [day] [month] [year] [list]
Message-ID: <20240813130024.GP25962@twin.jikos.cz>
Date: Tue, 13 Aug 2024 15:00:24 +0200
From: David Sterba <dsterba@...e.cz>
To: Jeff Layton <jlayton@...nel.org>
Cc: dsterba@...e.cz, Chris Mason <clm@...com>,
	Josef Bacik <josef@...icpanda.com>, David Sterba <dsterba@...e.com>,
	linux-btrfs@...r.kernel.org, linux-kernel@...r.kernel.org,
	bpf@...r.kernel.org
Subject: Re: [PATCH] btrfs: update target inode's ctime on unlink

On Mon, Aug 12, 2024 at 12:51:21PM -0400, Jeff Layton wrote:
> On Mon, 2024-08-12 at 18:42 +0200, David Sterba wrote:
> > On Mon, Aug 12, 2024 at 12:30:52PM -0400, Jeff Layton wrote:
> > > Unlink changes the link count on the target inode. POSIX mandates that
> > > the ctime must also change when this occurs.
> > 
> > Right, thanks. According to https://pubs.opengroup.org/onlinepubs/9699919799/functions/unlink.html:
> > 
> > Upon successful completion, unlink() shall mark for update the last data
> > modification and last file status change timestamps of the parent
> > directory. Also, if the file's link count is not 0, the last file status
> > change timestamp of the file shall be marked for update.
> > 
> 
> Weird way to phrase to that. IMO, we still want to stamp the inode's
> ctime even if the link count goes to 0. That's what Linux generally
> does, anyway. Oh well..
>  
> > 
> > > Signed-off-by: Jeff Layton <jlayton@...nel.org>
> > 
> > Reviewed-by: David Sterba <dsterba@...e.com>
> 
> 
> FWIW, this should probably go in via the btrfs tree. 

Yes, we'll take it.

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ