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, 01 Sep 2010 17:30:13 +0900
From:	Kazuya Mio <k-mio@...jp.nec.com>
To:	Andreas Rid <andreas@...-net.de>
CC:	ext4 <linux-ext4@...r.kernel.org>
Subject: Re: [patch] e4defrag: relevant file fragmentation with base_file

2010/08/30 4:47, Andreas Rid wrote:
> @@ -2327,8 +2320,44 @@ int main(int argc, char *argv[])
>   			} else
>   				printf("ext4 defragmentation for %s\n",
>   								 argv[i]);
> -			/* Defrag single file process */
> -			file_defrag(argv[i],&buf, FTW_F, NULL);
> +
> +			if (mode_flag&  RELEVANT&&  i == optind) {
> +				if (i - argc == 1)
> +					/* not enought arguemnts */
> +					goto out;

I think this condition should be "argc - optind == 1" because "i" is smaller
than argc at all times.

> +					goto out;
> +				}
> +				
> +				r_pstart = get_physical_offset(fd,&ret);

If e4defrag is executed with the following arguments, e4defrag will move the
extents of "move_file" near the "directory".
# e4defrag -r base_file directory move_file

To prevent this case, r_pstart should not be changed even if directories or
devices are set to the argument of e4defrag after the physical block number of
the "base_file" was assigned to r_pstart.

I will fix your patch in above way. Any comments?

Regards,
Kazuya Mio

--
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