From 8865c418caf4e9dd2c24bdfae3a5a4106e143e60 Mon Sep 17 00:00:00 2001 From: David Woodhouse Date: Wed, 3 Dec 2008 22:12:38 -0800 Subject: atm: 32-bit ioctl compatibility We lack compat ioctl support through most of the ATM code. This patch deals with most of it, and I can now at least use BR2684 and PPPoATM with 32-bit userspace. I haven't added a .compat_ioctl method to struct atm_ioctl, because AFAICT none of the current users need any conversion -- so we can just call the ->ioctl() method in every case. I looked at br2684, clip, lec, mpc, pppoatm and atmtcp. In svc_compat_ioctl() the only mangling which is needed is to change COMPAT_ATM_ADDPARTY to ATM_ADDPARTY. Although it's defined as _IOW('a', ATMIOC_SPECIAL+4,struct atm_iobuf) it doesn't actually _take_ a struct atm_iobuf as an argument -- it takes a struct sockaddr_atmsvc, which _is_ the same between 32-bit and 64-bit code, so doesn't need conversion. Almost all of vcc_ioctl() would have been identical, so I converted that into a core do_vcc_ioctl() function with an 'int compat' argument. I've done the same with atm_dev_ioctl(), where there _are_ a few differences, but still it's relatively contained and there would otherwise have been a lot of duplication. I haven't done any of the actual device-specific ioctls, although I've added a compat_ioctl method to struct atmdev_ops. Signed-off-by: David Woodhouse Signed-off-by: David S. Miller --- net/atm/pvc.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'net/atm/pvc.c') diff --git a/net/atm/pvc.c b/net/atm/pvc.c index 43e8bf5ed00..e1d22d9430d 100644 --- a/net/atm/pvc.c +++ b/net/atm/pvc.c @@ -113,6 +113,9 @@ static const struct proto_ops pvc_proto_ops = { .getname = pvc_getname, .poll = vcc_poll, .ioctl = vcc_ioctl, +#ifdef CONFIG_COMPAT + .compat_ioctl = vcc_compat_ioctl, +#endif .listen = sock_no_listen, .shutdown = pvc_shutdown, .setsockopt = pvc_setsockopt, -- cgit v1.2.3