svn commit: r195200 - in head/usr.sbin: . wake

[Stanislav Sedov]

On Tue, 30 Jun 2009 18:51:23 +0000 (UTC)
Martin Blapp <mbr at FreeBSD.org> mentioned:

> Author: mbr
> Date: Tue Jun 30 18:51:22 2009
> New Revision: 195200
> URL: http://svn.freebsd.org/changeset/base/195200
> 
> Log:
>   Add wake, a tool to send Wake on LAN frames to hosts on a local Ethernet network
>   

Cool! I always wanted something like this in base.

> +
> +WARNS?= 2
> +
> +.include <bsd.prog.mk>
>

What is the reason to use WARNS=2 here?  Does it compile with higher warning
flags set?  Could this warnings be fixed?
 

> +	p = (u_char *)&pkt;
> +	len = sizeof(pkt);
> +	bw = 0;
> +	while (len) {
> +		if ((bw = write(bpf, &pkt, sizeof(pkt))) == -1)
> +			return -1;
> +		len -= bw;
> +		p += bw;
> +	}
> +	return 0;
> +}

What the "p" pointer is used here for?  I don't see any usage for it besides
incrementing it in the loop.  Am I missing something?

Thanks!
-- 
Stanislav Sedov
ST4096-RIPE
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