diff mbox

[1/1] include/uapi/linux/sockios.h: mark SIOCRTMSG unused

Message ID 1451427722-2672-1-git-send-email-xypron.glpk@gmx.de
State Changes Requested, archived
Delegated to: David Miller
Headers show

Commit Message

Heinrich Schuchardt Dec. 29, 2015, 10:22 p.m. UTC
IOCTL SIOCRTMSG does nothing but return EINVAL.

So comment it as unused.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
---
 include/uapi/linux/sockios.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

Michael Kerrisk \(man-pages\) Dec. 30, 2015, 10:56 a.m. UTC | #1
Hi Heinrich,

On 12/29/2015 11:22 PM, Heinrich Schuchardt wrote:
> IOCTL SIOCRTMSG does nothing but return EINVAL.
> 
> So comment it as unused.

Can you say something about how you confirmed this?
It's not immediately obvious from the code.

Cheers,

Michael


> Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
> ---
>  include/uapi/linux/sockios.h | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/include/uapi/linux/sockios.h b/include/uapi/linux/sockios.h
> index e888b1a..8e7890b 100644
> --- a/include/uapi/linux/sockios.h
> +++ b/include/uapi/linux/sockios.h
> @@ -27,7 +27,7 @@
>  /* Routing table calls. */
>  #define SIOCADDRT	0x890B		/* add routing table entry	*/
>  #define SIOCDELRT	0x890C		/* delete routing table entry	*/
> -#define SIOCRTMSG	0x890D		/* call to routing system	*/
> +#define SIOCRTMSG	0x890D		/* unused			*/
>  
>  /* Socket configuration controls. */
>  #define SIOCGIFNAME	0x8910		/* get iface name		*/
>
Heinrich Schuchardt Dec. 30, 2015, 11:14 a.m. UTC | #2
On 12/30/2015 11:56 AM, Michael Kerrisk (man-pages) wrote:
> Hi Heinrich,
> 
> On 12/29/2015 11:22 PM, Heinrich Schuchardt wrote:
>> IOCTL SIOCRTMSG does nothing but return EINVAL.
>>
>> So comment it as unused.
> 
> Can you say something about how you confirmed this?
> It's not immediately obvious from the code.
> 
> Cheers,
> 
> Michael

grep -GHrn SIOCRTMSG

SIOCRTMSG is only used in:
* net/ipv4/af_inet.c
* include/uapi/linux/sockios.h

inet_ioctl calls ip_rt_ioctl.

ip_rt_ioctl only handles SIOCADDRT and SIOCDELRT and returns -EINVAL
otherwise.

cf.
http://lkml.iu.edu/hypermail/linux/kernel/0911.0/02636.html

Best regards

Heinrich

> 
> 
>> Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
>> ---
>>  include/uapi/linux/sockios.h | 2 +-
>>  1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/include/uapi/linux/sockios.h b/include/uapi/linux/sockios.h
>> index e888b1a..8e7890b 100644
>> --- a/include/uapi/linux/sockios.h
>> +++ b/include/uapi/linux/sockios.h
>> @@ -27,7 +27,7 @@
>>  /* Routing table calls. */
>>  #define SIOCADDRT	0x890B		/* add routing table entry	*/
>>  #define SIOCDELRT	0x890C		/* delete routing table entry	*/
>> -#define SIOCRTMSG	0x890D		/* call to routing system	*/
>> +#define SIOCRTMSG	0x890D		/* unused			*/
>>  
>>  /* Socket configuration controls. */
>>  #define SIOCGIFNAME	0x8910		/* get iface name		*/
>>
> 
> 

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David Miller Jan. 4, 2016, 10:19 p.m. UTC | #3
From: Heinrich Schuchardt <xypron.glpk@gmx.de>
Date: Tue, 29 Dec 2015 23:22:02 +0100

> IOCTL SIOCRTMSG does nothing but return EINVAL.
> 
> So comment it as unused.
> 
> Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>

Please enhance your commit log message to include the analysis you
provided in your reply to Michael Kerrisk.
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diff mbox

Patch

diff --git a/include/uapi/linux/sockios.h b/include/uapi/linux/sockios.h
index e888b1a..8e7890b 100644
--- a/include/uapi/linux/sockios.h
+++ b/include/uapi/linux/sockios.h
@@ -27,7 +27,7 @@ 
 /* Routing table calls. */
 #define SIOCADDRT	0x890B		/* add routing table entry	*/
 #define SIOCDELRT	0x890C		/* delete routing table entry	*/
-#define SIOCRTMSG	0x890D		/* call to routing system	*/
+#define SIOCRTMSG	0x890D		/* unused			*/
 
 /* Socket configuration controls. */
 #define SIOCGIFNAME	0x8910		/* get iface name		*/