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/resources.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'net/atm/resources.h') diff --git a/net/atm/resources.h b/net/atm/resources.h index 1d004aaaeec1..126fb1840dfb 100644 --- a/net/atm/resources.h +++ b/net/atm/resources.h @@ -13,7 +13,7 @@ extern struct list_head atm_devs; extern struct mutex atm_dev_mutex; -int atm_dev_ioctl(unsigned int cmd, void __user *arg); +int atm_dev_ioctl(unsigned int cmd, void __user *arg, int compat); #ifdef CONFIG_PROC_FS -- cgit v1.2.3