linux-ext4 - Re: [PATCH 4/6] xfstests: Add fallocate zero range operation to fsx

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]

Date:	Wed, 26 Feb 2014 07:31:58 +1100
From:	Dave Chinner <david@...morbit.com>
To:	Lukas Czerner <lczerner@...hat.com>
Cc:	linux-ext4@...r.kernel.org, linux-fsdevel@...r.kernel.org,
	xfs@....sgi.com
Subject: Re: [PATCH 4/6] xfstests: Add fallocate zero range operation to fsx

On Tue, Feb 25, 2014 at 08:15:26PM +0100, Lukas Czerner wrote:
> Signed-off-by: Lukas Czerner <lczerner@...hat.com>

commit message?

>  #define OP_CLOSEOPEN	100
> @@ -142,6 +144,7 @@ int	seed = 1;			/* -S flag */
>  int     mapped_writes = 1;              /* -W flag disables */
>  int     fallocate_calls = 1;            /* -F flag disables */
>  int     punch_hole_calls = 1;           /* -H flag disables */
> +int     zero_range_calls = 1;           /* -E flag disables */

'-E' doesn't make much sense - '-z' would be better....

>  int 	mapped_reads = 1;		/* -R flag disables it */
>  int	fsxgoodfd = 0;
>  int	o_direct;			/* -Z */
> @@ -320,6 +323,14 @@ logdump(void)
>  						     lp->args[0] + lp->args[1])
>  				prt("\t******PPPP");
>  			break;
> +		case OP_ZERO_RANGE:
> +			prt("ZERO    0x%x thru 0x%x\t(0x%x bytes)",
> +			    lp->args[0], lp->args[0] + lp->args[1] - 1,
> +			    lp->args[1]);
> +			if (badoff >= lp->args[0] && badoff <
> +						     lp->args[0] + lp->args[1])
> +				prt("\t******ZZZZ");
> +			break;
>  		case OP_SKIPPED:
>  			prt("SKIPPED (no operation)");
>  			break;
> @@ -882,6 +893,64 @@ do_punch_hole(unsigned offset, unsigned length)
>  }
>  #endif
>  
> +#ifdef FALLOC_FL_ZERO_RANGE
> +void
> +do_zero_range(unsigned offset, unsigned length)
> +{
> +	unsigned end_offset;
> +	int max_offset = 0;
> +	int max_len = 0;
> +	int mode = FALLOC_FL_ZERO_RANGE;

This is just a copy of the hole punch code with a different mode,
OP and s/punch/zero/g. Please factor.

......
> +void
> +test_zero_range()
> +{
> +#ifdef FALLOC_FL_ZERO_RANGE
> +	if (!lite && zero_range_calls) {
> +		if (fallocate(fd, FALLOC_FL_ZERO_RANGE,
> +				0, 1) && errno == EOPNOTSUPP) {
> +			if(!quiet)
> +				warn("main: filesystem does not support fallocate zero range, disabling");
> +			zero_range_calls = 0;
> +		} else
> +			ftruncate(fd, 0);
> +	}
> +#else /* ! ZERO RANGE */
> +	zero_range_calls = 0;
> +#endif
> +}

Third copy of this test code for fallocate. Please factor.

Cheers,

Dave.
-- 
Dave Chinner
david@...morbit.com
--
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