[v1,10/10] Add "hash_alg=siphash" support

The #define name refers specifically to SipHash-2-4, but keep the
parameter name short.

Signed-off-by: George Spelvin <linux@horizon.com>
---
The other half of the implementation.

 lib/e2p/hashstr.c     | 1 +
 misc/mke2fs.conf.5.in | 3 ++-
 misc/tune2fs.8.in     | 3 ++-
 3 files changed, 5 insertions(+), 2 deletions(-)

On Tue, Sep 23, 2014 at 06:31:06AM -0400, George Spelvin wrote:
> The #define name refers specifically to SipHash-2-4, but keep the
> parameter name short.
> 
> Signed-off-by: George Spelvin <linux@horizon.com>
> ---
> The other half of the implementation.

Looks reasonable, but are there test cases for e2fsprogs?

--D

> 
>  lib/e2p/hashstr.c     | 1 +
>  misc/mke2fs.conf.5.in | 3 ++-
>  misc/tune2fs.8.in     | 3 ++-
>  3 files changed, 5 insertions(+), 2 deletions(-)
> 
> diff --git a/lib/e2p/hashstr.c b/lib/e2p/hashstr.c
> index a73758c..bd4a8da 100644
> --- a/lib/e2p/hashstr.c
> +++ b/lib/e2p/hashstr.c
> @@ -27,6 +27,7 @@ static struct hash hash_list[] = {
>  	{	EXT2_HASH_LEGACY, 	"legacy" },
>  	{	EXT2_HASH_HALF_MD4, 	"half_md4" },
>  	{	EXT2_HASH_TEA, 		"tea" },
> +	{	EXT2_HASH_SIPHASH24,	"siphash" },
>  	{	0, 0 },
>  };
>  
> diff --git a/misc/mke2fs.conf.5.in b/misc/mke2fs.conf.5.in
> index ad6c11b..257bddd 100644
> --- a/misc/mke2fs.conf.5.in
> +++ b/misc/mke2fs.conf.5.in
> @@ -173,8 +173,9 @@ new filesystems with hashed b-tree directories.  Valid algorithms
>  accepted are:
>  .IR legacy ,
>  .IR half_md4 ,
> +.IR tea ,
>  and
> -.IR tea .
> +.IR siphash .
>  .TP
>  .I inode_ratio
>  This relation specifies the default inode ratio if the user does not
> diff --git a/misc/tune2fs.8.in b/misc/tune2fs.8.in
> index c50d475..f25f177 100644
> --- a/misc/tune2fs.8.in
> +++ b/misc/tune2fs.8.in
> @@ -209,8 +209,9 @@ Set the default hash algorithm used for filesystems with hashed b-tree
>  directories.  Valid algorithms accepted are:
>  .IR legacy ,
>  .IR half_md4 ,
> +.IR tea ,
>  and
> -.IR tea .
> +.IR siphash .
>  .TP
>  .BI mount_opts= mount_option_string
>  Set a set of default mount options which will be used when the file
> -- 
> 2.1.0
> 
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