netdev - Re: Redefinition of struct in6_addr in <netinet/in.h> and <linux/in6.h>

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-next>] [day] [month] [year] [list]

Date:	Thu, 17 Jan 2013 14:59:13 +0800
From:	Cong Wang <amwang@...hat.com>
To:	Jike Song <albcamus@...il.com>
Cc:	David Miller <davem@...emloft.net>, vapier@...too.org,
	bhutchings@...arflare.com, libc-alpha@...rceware.org,
	yoshfuji@...ux-ipv6.org, tmb@...eia.org, eblake@...hat.com,
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
	libvirt-list@...hat.com, tgraf@...g.ch, schwab@...e.de,
	carlos@...temhalted.org
Subject: Re: Redefinition of struct in6_addr in <netinet/in.h> and
 <linux/in6.h>

On Thu, 2013-01-17 at 11:55 +0800, Jike Song wrote:
> On Thu, Jan 17, 2013 at 2:59 AM, David Miller <davem@...emloft.net> wrote:
> 
> >
> > When GLIBC doesn't provide it's own definition of some networking
> > macros or interfaces that the kernel provides, people include the
> > kernel header.
> >
> 
> Recently I got a problem when copying a structure from kernel to userspace,
> after debugging I found:
> 
> kernel:   include/linux/inet.h
> 
> #define INET6_ADDRSTRLEN        (48)
> 
> glibc:  /usr/include/netinet/in.h
> 
> #define INET6_ADDRSTRLEN 46
> 
> 
> Any reason to differentiate them from each other?
> 

I see no reason, even although I don't know why it is 46 instead of 40.

But include/linux/inet.h is not exported to user-space, AFAIK.


--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html