re: kern/39424 (SIOCGIFFLAGS ioctl(2) from 4.0 does not work under compat netbsd32)

[matthew green <mrg%eterna.com.au@localhost>]

The following reply was made to PR kern/39424; it has been noted by GNATS.

From: matthew green <mrg%eterna.com.au@localhost>
To: gnats-bugs%NetBSD.org@localhost
Cc: kern-bug-people%netbsd.org@localhost, netbsd-bugs%netbsd.org@localhost,
    gnats-admin%netbsd.org@localhost, dsl%NetBSD.org@localhost, 
njoly%pasteur.fr@localhost,
    christos%netbsd.org@localhost
Subject: re: kern/39424 (SIOCGIFFLAGS ioctl(2) from 4.0 does not work under 
compat netbsd32)
Date: Sat, 05 Dec 2009 08:41:42 +1100

 my guess is that this commit is the problem:
 
        http://mail-index.netbsd.org/source-changes/2007/05/29/msg186117.html
 
 it changed the size of struct ifreq, pushing the ifru_flags flags further
 into memory by sizeof(struct sockaddr_storage).
 
 christos?  the comment says it should be backwrds compatible.
 
 
 .mrg.