RE: [ECOS] IP adress Get and Set (SIOCSIFADDR problem ? )

[Xun Yuan <xunyuan@yahoo.com>]

Hi Alok,

Thank you so much for the quick reply!

Both SOCK_RAW and SOCK_DGRAM work.  Maybe some other
options work as well.  I talked to people at work.  I
was told the difference with different options lies in
that when you get ip address, you will not be able to
as a non-super-user if it's set with SOCK_RAW, since
only super user has SOCK_RAW permission.

My other question is that: is there a way for the set
IP address to survive power cycle with
ioctl(SIOCSIFADDR)?

I know for sure if the host's original IP address is
dynamic.  When you power off the computer and power it
back on, the DHCP in config file
(etc/sysconfig/network-scripts/ifcfg-eth0) is still
there, the system starts to get IP address from DHCP
server.


Thanks very much in advance!
pam




--- Alok Singh <alok.singh@broadcom.com> wrote:

> Yuan,
> I believe you are right.  I always use SOCK_RAW. 
> Are you seeing any problem with SOCK_RAW? For some
> reasons, ecos
> bootp/dhcp sever code uses SOCK_DGRAM while setting
> IP address.
> 
> -ALOK 
> 
> -----Original Message-----
> From: ecos-discuss-owner@ecos.sourceware.org
> [mailto:ecos-discuss-owner@ecos.sourceware.org] On
> Behalf Of Xun Yuan
> Sent: Sunday, September 30, 2007 3:05 AM
> To: ecos-discuss@sources.redhat.com
> Subject: [ECOS] IP adress Get and Set (SIOCSIFADDR
> problem ? )
> 
> HI There,
>  
> Would someone please tell me why the second
> parameter
> in GetIP and SetIP is SOCK_DGRAM in the below link? 
> Does it matter in case of getting/setting IP
> addresses
> of an interface?  If it does not, any value would
> do,
> such as SOCK_RAW, SOCK_DSTREAM, right?
>  
> Thanks very much in advance
> pam
>  
>  
>
http://www.cygwin.com/ml/ecos-discuss/2004-01/msg00130.html
> 



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