[linux.git] / net / atm / ioctl.c

/* ATM ioctl handling */

/* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */
/* 2003 John Levon  <[email protected]> */

#define pr_fmt(fmt) KBUILD_MODNAME ":%s: " fmt, __func__

#include <linux/module.h>
#include <linux/kmod.h>
#include <linux/net.h>		/* struct socket, struct proto_ops */
#include <linux/atm.h>		/* ATM stuff */
#include <linux/atmdev.h>
#include <linux/atmclip.h>	/* CLIP_*ENCAP */
#include <linux/atmarp.h>	/* manifest constants */
#include <linux/capability.h>
#include <linux/sonet.h>	/* for ioctls */
#include <linux/atmsvc.h>
#include <linux/atmmpc.h>
#include <net/atmclip.h>
#include <linux/atmlec.h>
#include <linux/mutex.h>
#include <asm/ioctls.h>
#include <net/compat.h>

#include "resources.h"
#include "signaling.h"		/* for WAITING and sigd_attach */
#include "common.h"


static DEFINE_MUTEX(ioctl_mutex);
static LIST_HEAD(ioctl_list);


void register_atm_ioctl(struct atm_ioctl *ioctl)
{
	mutex_lock(&ioctl_mutex);
	list_add_tail(&ioctl->list, &ioctl_list);
	mutex_unlock(&ioctl_mutex);
}
EXPORT_SYMBOL(register_atm_ioctl);

void deregister_atm_ioctl(struct atm_ioctl *ioctl)
{
	mutex_lock(&ioctl_mutex);
	list_del(&ioctl->list);
	mutex_unlock(&ioctl_mutex);
}
EXPORT_SYMBOL(deregister_atm_ioctl);

static int do_vcc_ioctl(struct socket *sock, unsigned int cmd,
			unsigned long arg, int compat)
{
	struct sock *sk = sock->sk;
	struct atm_vcc *vcc;
	int error;
	struct list_head *pos;
	void __user *argp = (void __user *)arg;

	vcc = ATM_SD(sock);
	switch (cmd) {
	case SIOCOUTQ:
		if (sock->state != SS_CONNECTED ||
		    !test_bit(ATM_VF_READY, &vcc->flags)) {
			error =  -EINVAL;
			goto done;
		}
		error = put_user(sk->sk_sndbuf - sk_wmem_alloc_get(sk),
				 (int __user *)argp) ? -EFAULT : 0;
		goto done;
	case SIOCINQ:
	{
		struct sk_buff *skb;

		if (sock->state != SS_CONNECTED) {
			error = -EINVAL;
			goto done;
		}
		skb = skb_peek(&sk->sk_receive_queue);
		error = put_user(skb ? skb->len : 0,
				 (int __user *)argp) ? -EFAULT : 0;
		goto done;
	}
	case SIOCGSTAMP: /* borrowed from IP */
#ifdef CONFIG_COMPAT
		if (compat)
			error = compat_sock_get_timestamp(sk, argp);
		else
#endif
			error = sock_get_timestamp(sk, argp);
		goto done;
	case SIOCGSTAMPNS: /* borrowed from IP */
#ifdef CONFIG_COMPAT
		if (compat)
			error = compat_sock_get_timestampns(sk, argp);
		else
#endif
			error = sock_get_timestampns(sk, argp);
		goto done;
	case ATM_SETSC:
		if (net_ratelimit())
			pr_warning("ATM_SETSC is obsolete; used by %s:%d\n",
				   current->comm, task_pid_nr(current));
		error = 0;
		goto done;
	case ATMSIGD_CTRL:
		if (!capable(CAP_NET_ADMIN)) {
			error = -EPERM;
			goto done;
		}
		/*
		 * The user/kernel protocol for exchanging signalling
		 * info uses kernel pointers as opaque references,
		 * so the holder of the file descriptor can scribble
		 * on the kernel... so we should make sure that we
		 * have the same privileges that /proc/kcore needs
		 */
		if (!capable(CAP_SYS_RAWIO)) {
			error = -EPERM;
			goto done;
		}
#ifdef CONFIG_COMPAT
		/* WTF? I don't even want to _think_ about making this
		   work for 32-bit userspace. TBH I don't really want
		   to think about it at all. dwmw2. */
		if (compat) {
			if (net_ratelimit())
				pr_warning("32-bit task cannot be atmsigd\n");
			error = -EINVAL;
			goto done;
		}
#endif
		error = sigd_attach(vcc);
		if (!error)
			sock->state = SS_CONNECTED;
		goto done;
	case ATM_SETBACKEND:
	case ATM_NEWBACKENDIF:
	{
		atm_backend_t backend;
		error = get_user(backend, (atm_backend_t __user *)argp);
		if (error)
			goto done;
		switch (backend) {
		case ATM_BACKEND_PPP:
			request_module("pppoatm");
			break;
		case ATM_BACKEND_BR2684:
			request_module("br2684");
			break;
		}
		break;
	}
	case ATMMPC_CTRL:
	case ATMMPC_DATA:
		request_module("mpoa");
		break;
	case ATMARPD_CTRL:
		request_module("clip");
		break;
	case ATMLEC_CTRL:
		request_module("lec");
		break;
	}

	error = -ENOIOCTLCMD;

	mutex_lock(&ioctl_mutex);
	list_for_each(pos, &ioctl_list) {
		struct atm_ioctl *ic = list_entry(pos, struct atm_ioctl, list);
		if (try_module_get(ic->owner)) {
			error = ic->ioctl(sock, cmd, arg);
			module_put(ic->owner);
			if (error != -ENOIOCTLCMD)
				break;
		}
	}
	mutex_unlock(&ioctl_mutex);

	if (error != -ENOIOCTLCMD)
		goto done;

	error = atm_dev_ioctl(cmd, argp, compat);

done:
	return error;
}

int vcc_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
{
	return do_vcc_ioctl(sock, cmd, arg, 0);
}

#ifdef CONFIG_COMPAT
/*
 * FIXME:
 * The compat_ioctl handling is duplicated, using both these conversion
 * routines and the compat argument to the actual handlers. Both
 * versions are somewhat incomplete and should be merged, e.g. by
 * moving the ioctl number translation into the actual handlers and
 * killing the conversion code.
 *
 * -arnd, November 2009
 */
#define ATM_GETLINKRATE32 _IOW('a', ATMIOC_ITF+1, struct compat_atmif_sioc)
#define ATM_GETNAMES32    _IOW('a', ATMIOC_ITF+3, struct compat_atm_iobuf)
#define ATM_GETTYPE32     _IOW('a', ATMIOC_ITF+4, struct compat_atmif_sioc)
#define ATM_GETESI32	  _IOW('a', ATMIOC_ITF+5, struct compat_atmif_sioc)
#define ATM_GETADDR32	  _IOW('a', ATMIOC_ITF+6, struct compat_atmif_sioc)
#define ATM_RSTADDR32	  _IOW('a', ATMIOC_ITF+7, struct compat_atmif_sioc)
#define ATM_ADDADDR32	  _IOW('a', ATMIOC_ITF+8, struct compat_atmif_sioc)
#define ATM_DELADDR32	  _IOW('a', ATMIOC_ITF+9, struct compat_atmif_sioc)
#define ATM_GETCIRANGE32  _IOW('a', ATMIOC_ITF+10, struct compat_atmif_sioc)
#define ATM_SETCIRANGE32  _IOW('a', ATMIOC_ITF+11, struct compat_atmif_sioc)
#define ATM_SETESI32      _IOW('a', ATMIOC_ITF+12, struct compat_atmif_sioc)
#define ATM_SETESIF32     _IOW('a', ATMIOC_ITF+13, struct compat_atmif_sioc)
#define ATM_GETSTAT32     _IOW('a', ATMIOC_SARCOM+0, struct compat_atmif_sioc)
#define ATM_GETSTATZ32    _IOW('a', ATMIOC_SARCOM+1, struct compat_atmif_sioc)
#define ATM_GETLOOP32	  _IOW('a', ATMIOC_SARCOM+2, struct compat_atmif_sioc)
#define ATM_SETLOOP32	  _IOW('a', ATMIOC_SARCOM+3, struct compat_atmif_sioc)
#define ATM_QUERYLOOP32	  _IOW('a', ATMIOC_SARCOM+4, struct compat_atmif_sioc)

static struct {
	unsigned int cmd32;
	unsigned int cmd;
} atm_ioctl_map[] = {
	{ ATM_GETLINKRATE32, ATM_GETLINKRATE },
	{ ATM_GETNAMES32,    ATM_GETNAMES },
	{ ATM_GETTYPE32,     ATM_GETTYPE },
	{ ATM_GETESI32,	     ATM_GETESI },
	{ ATM_GETADDR32,     ATM_GETADDR },
	{ ATM_RSTADDR32,     ATM_RSTADDR },
	{ ATM_ADDADDR32,     ATM_ADDADDR },
	{ ATM_DELADDR32,     ATM_DELADDR },
	{ ATM_GETCIRANGE32,  ATM_GETCIRANGE },
	{ ATM_SETCIRANGE32,  ATM_SETCIRANGE },
	{ ATM_SETESI32,	     ATM_SETESI },
	{ ATM_SETESIF32,     ATM_SETESIF },
	{ ATM_GETSTAT32,     ATM_GETSTAT },
	{ ATM_GETSTATZ32,    ATM_GETSTATZ },
	{ ATM_GETLOOP32,     ATM_GETLOOP },
	{ ATM_SETLOOP32,     ATM_SETLOOP },
	{ ATM_QUERYLOOP32,   ATM_QUERYLOOP },
};

#define NR_ATM_IOCTL ARRAY_SIZE(atm_ioctl_map)

static int do_atm_iobuf(struct socket *sock, unsigned int cmd,
			unsigned long arg)
{
	struct atm_iobuf __user *iobuf;
	struct compat_atm_iobuf __user *iobuf32;
	u32 data;
	void __user *datap;
	int len, err;

	iobuf = compat_alloc_user_space(sizeof(*iobuf));
	iobuf32 = compat_ptr(arg);

	if (get_user(len, &iobuf32->length) ||
	    get_user(data, &iobuf32->buffer))
		return -EFAULT;
	datap = compat_ptr(data);
	if (put_user(len, &iobuf->length) ||
	    put_user(datap, &iobuf->buffer))
		return -EFAULT;

	err = do_vcc_ioctl(sock, cmd, (unsigned long) iobuf, 0);

	if (!err) {
		if (copy_in_user(&iobuf32->length, &iobuf->length,
				 sizeof(int)))
			err = -EFAULT;
	}

	return err;
}

static int do_atmif_sioc(struct socket *sock, unsigned int cmd,
			 unsigned long arg)
{
	struct atmif_sioc __user *sioc;
	struct compat_atmif_sioc __user *sioc32;
	u32 data;
	void __user *datap;
	int err;

	sioc = compat_alloc_user_space(sizeof(*sioc));
	sioc32 = compat_ptr(arg);

	if (copy_in_user(&sioc->number, &sioc32->number, 2 * sizeof(int)) ||
	    get_user(data, &sioc32->arg))
		return -EFAULT;
	datap = compat_ptr(data);
	if (put_user(datap, &sioc->arg))
		return -EFAULT;

	err = do_vcc_ioctl(sock, cmd, (unsigned long) sioc, 0);

	if (!err) {
		if (copy_in_user(&sioc32->length, &sioc->length,
				 sizeof(int)))
			err = -EFAULT;
	}
	return err;
}

static int do_atm_ioctl(struct socket *sock, unsigned int cmd32,
			unsigned long arg)
{
	int i;
	unsigned int cmd = 0;

	switch (cmd32) {
	case SONET_GETSTAT:
	case SONET_GETSTATZ:
	case SONET_GETDIAG:
	case SONET_SETDIAG:
	case SONET_CLRDIAG:
	case SONET_SETFRAMING:
	case SONET_GETFRAMING:
	case SONET_GETFRSENSE:
		return do_atmif_sioc(sock, cmd32, arg);
	}

	for (i = 0; i < NR_ATM_IOCTL; i++) {
		if (cmd32 == atm_ioctl_map[i].cmd32) {
			cmd = atm_ioctl_map[i].cmd;
			break;
		}
	}
	if (i == NR_ATM_IOCTL)
		return -EINVAL;

	switch (cmd) {
	case ATM_GETNAMES:
		return do_atm_iobuf(sock, cmd, arg);

	case ATM_GETLINKRATE:
	case ATM_GETTYPE:
	case ATM_GETESI:
	case ATM_GETADDR:
	case ATM_RSTADDR:
	case ATM_ADDADDR:
	case ATM_DELADDR:
	case ATM_GETCIRANGE:
	case ATM_SETCIRANGE:
	case ATM_SETESI:
	case ATM_SETESIF:
	case ATM_GETSTAT:
	case ATM_GETSTATZ:
	case ATM_GETLOOP:
	case ATM_SETLOOP:
	case ATM_QUERYLOOP:
		return do_atmif_sioc(sock, cmd, arg);
	}

	return -EINVAL;
}

int vcc_compat_ioctl(struct socket *sock, unsigned int cmd,
		     unsigned long arg)
{
	int ret;

	ret = do_vcc_ioctl(sock, cmd, arg, 1);
	if (ret != -ENOIOCTLCMD)
		return ret;

	return do_atm_ioctl(sock, cmd, arg);
}
#endif
Commit	Line	Data
1da177e4 LT	1	/* ATM ioctl handling */
	2
	3	/* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */
	4	/* 2003 John Levon <[email protected]> */
	5
99824461	6	#define pr_fmt(fmt) KBUILD_MODNAME ":%s: " fmt, __func__
1da177e4	7
1da177e4 LT	8	#include <linux/module.h>
	9	#include <linux/kmod.h>
	10	#include <linux/net.h> /* struct socket, struct proto_ops */
	11	#include <linux/atm.h> /* ATM stuff */
	12	#include <linux/atmdev.h>
	13	#include <linux/atmclip.h> /* CLIP_ENCAP /
	14	#include <linux/atmarp.h> /* manifest constants */
4fc268d2	15	#include <linux/capability.h>
1da177e4 LT	16	#include <linux/sonet.h> /* for ioctls */
	17	#include <linux/atmsvc.h>
	18	#include <linux/atmmpc.h>
	19	#include <net/atmclip.h>
	20	#include <linux/atmlec.h>
4a3e2f71	21	#include <linux/mutex.h>
1da177e4	22	#include <asm/ioctls.h>
8865c418	23	#include <net/compat.h>
1da177e4 LT	24
	25	#include "resources.h"
	26	#include "signaling.h" /* for WAITING and sigd_attach */
295098e9	27	#include "common.h"
1da177e4 LT	28
1da177e4 LT	29
4a3e2f71	30	static DEFINE_MUTEX(ioctl_mutex);
1da177e4 LT	31	static LIST_HEAD(ioctl_list);
	32
	33
	34	void register_atm_ioctl(struct atm_ioctl *ioctl)
	35	{
4a3e2f71	36	mutex_lock(&ioctl_mutex);
1da177e4	37	list_add_tail(&ioctl->list, &ioctl_list);
4a3e2f71	38	mutex_unlock(&ioctl_mutex);
1da177e4	39	}
5ff7ef79	40	EXPORT_SYMBOL(register_atm_ioctl);
1da177e4 LT	41
	42	void deregister_atm_ioctl(struct atm_ioctl *ioctl)
	43	{
4a3e2f71	44	mutex_lock(&ioctl_mutex);
1da177e4	45	list_del(&ioctl->list);
4a3e2f71	46	mutex_unlock(&ioctl_mutex);
1da177e4	47	}
1da177e4 LT	48	EXPORT_SYMBOL(deregister_atm_ioctl);
1da177e4 LT	49
5ff7ef79 JP	50	static int do_vcc_ioctl(struct socket *sock, unsigned int cmd,
5ff7ef79 JP	51	unsigned long arg, int compat)
1da177e4 LT	52	{
	53	struct sock *sk = sock->sk;
	54	struct atm_vcc *vcc;
	55	int error;
5ff7ef79	56	struct list_head *pos;
1da177e4 LT	57	void __user argp = (void __user )arg;
	58
	59	vcc = ATM_SD(sock);
	60	switch (cmd) {
5ff7ef79 JP	61	case SIOCOUTQ:
	62	if (sock->state != SS_CONNECTED \|\|
	63	!test_bit(ATM_VF_READY, &vcc->flags)) {
	64	error = -EINVAL;
	65	goto done;
	66	}
	67	error = put_user(sk->sk_sndbuf - sk_wmem_alloc_get(sk),
	68	(int __user *)argp) ? -EFAULT : 0;
	69	goto done;
	70	case SIOCINQ:
	71	{
	72	struct sk_buff *skb;
	73
	74	if (sock->state != SS_CONNECTED) {
	75	error = -EINVAL;
1da177e4	76	goto done;
5ff7ef79 JP	77	}
	78	skb = skb_peek(&sk->sk_receive_queue);
	79	error = put_user(skb ? skb->len : 0,
	80	(int __user *)argp) ? -EFAULT : 0;
	81	goto done;
	82	}
	83	case SIOCGSTAMP: /* borrowed from IP */
8865c418	84	#ifdef CONFIG_COMPAT
5ff7ef79 JP	85	if (compat)
	86	error = compat_sock_get_timestamp(sk, argp);
	87	else
8865c418	88	#endif
5ff7ef79 JP	89	error = sock_get_timestamp(sk, argp);
	90	goto done;
	91	case SIOCGSTAMPNS: /* borrowed from IP */
8865c418	92	#ifdef CONFIG_COMPAT
5ff7ef79 JP	93	if (compat)
	94	error = compat_sock_get_timestampns(sk, argp);
	95	else
8865c418	96	#endif
5ff7ef79 JP	97	error = sock_get_timestampns(sk, argp);
	98	goto done;
	99	case ATM_SETSC:
	100	if (net_ratelimit())
	101	pr_warning("ATM_SETSC is obsolete; used by %s:%d\n",
	102	current->comm, task_pid_nr(current));
	103	error = 0;
	104	goto done;
	105	case ATMSIGD_CTRL:
	106	if (!capable(CAP_NET_ADMIN)) {
	107	error = -EPERM;
ae40eb1e	108	goto done;
5ff7ef79 JP	109	}
	110	/*
	111	* The user/kernel protocol for exchanging signalling
	112	* info uses kernel pointers as opaque references,
	113	* so the holder of the file descriptor can scribble
	114	* on the kernel... so we should make sure that we
	115	* have the same privileges that /proc/kcore needs
	116	*/
	117	if (!capable(CAP_SYS_RAWIO)) {
	118	error = -EPERM;
1da177e4	119	goto done;
5ff7ef79	120	}
8865c418	121	#ifdef CONFIG_COMPAT
5ff7ef79 JP	122	/* WTF? I don't even want to _think_ about making this
	123	work for 32-bit userspace. TBH I don't really want
	124	to think about it at all. dwmw2. */
	125	if (compat) {
	126	if (net_ratelimit())
	127	pr_warning("32-bit task cannot be atmsigd\n");
	128	error = -EINVAL;
	129	goto done;
	130	}
8865c418	131	#endif
5ff7ef79 JP	132	error = sigd_attach(vcc);
	133	if (!error)
	134	sock->state = SS_CONNECTED;
	135	goto done;
	136	case ATM_SETBACKEND:
	137	case ATM_NEWBACKENDIF:
	138	{
	139	atm_backend_t backend;
	140	error = get_user(backend, (atm_backend_t __user *)argp);
	141	if (error)
1da177e4	142	goto done;
5ff7ef79 JP	143	switch (backend) {
	144	case ATM_BACKEND_PPP:
	145	request_module("pppoatm");
e2c4b721	146	break;
5ff7ef79 JP	147	case ATM_BACKEND_BR2684:
5ff7ef79 JP	148	request_module("br2684");
1da177e4	149	break;
5ff7ef79 JP	150	}
	151	break;
	152	}
	153	case ATMMPC_CTRL:
	154	case ATMMPC_DATA:
	155	request_module("mpoa");
	156	break;
	157	case ATMARPD_CTRL:
	158	request_module("clip");
	159	break;
	160	case ATMLEC_CTRL:
	161	request_module("lec");
	162	break;
1da177e4 LT	163	}
1da177e4 LT	164
1da177e4 LT	165	error = -ENOIOCTLCMD;
1da177e4 LT	166
4a3e2f71	167	mutex_lock(&ioctl_mutex);
1da177e4	168	list_for_each(pos, &ioctl_list) {
5ff7ef79	169	struct atm_ioctl *ic = list_entry(pos, struct atm_ioctl, list);
1da177e4 LT	170	if (try_module_get(ic->owner)) {
	171	error = ic->ioctl(sock, cmd, arg);
	172	module_put(ic->owner);
	173	if (error != -ENOIOCTLCMD)
	174	break;
	175	}
	176	}
4a3e2f71	177	mutex_unlock(&ioctl_mutex);
1da177e4 LT	178
	179	if (error != -ENOIOCTLCMD)
	180	goto done;
	181
8865c418	182	error = atm_dev_ioctl(cmd, argp, compat);
1da177e4 LT	183
	184	done:
	185	return error;
	186	}
8865c418	187
8865c418 DW	188	int vcc_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
	189	{
	190	return do_vcc_ioctl(sock, cmd, arg, 0);
	191	}
	192
	193	#ifdef CONFIG_COMPAT
805003a4 AB	194	/*
	195	* FIXME:
	196	* The compat_ioctl handling is duplicated, using both these conversion
	197	* routines and the compat argument to the actual handlers. Both
	198	* versions are somewhat incomplete and should be merged, e.g. by
	199	* moving the ioctl number translation into the actual handlers and
	200	* killing the conversion code.
	201	*
	202	* -arnd, November 2009
	203	*/
	204	#define ATM_GETLINKRATE32 _IOW('a', ATMIOC_ITF+1, struct compat_atmif_sioc)
	205	#define ATM_GETNAMES32 _IOW('a', ATMIOC_ITF+3, struct compat_atm_iobuf)
	206	#define ATM_GETTYPE32 _IOW('a', ATMIOC_ITF+4, struct compat_atmif_sioc)
	207	#define ATM_GETESI32 _IOW('a', ATMIOC_ITF+5, struct compat_atmif_sioc)
	208	#define ATM_GETADDR32 _IOW('a', ATMIOC_ITF+6, struct compat_atmif_sioc)
	209	#define ATM_RSTADDR32 _IOW('a', ATMIOC_ITF+7, struct compat_atmif_sioc)
	210	#define ATM_ADDADDR32 _IOW('a', ATMIOC_ITF+8, struct compat_atmif_sioc)
	211	#define ATM_DELADDR32 _IOW('a', ATMIOC_ITF+9, struct compat_atmif_sioc)
	212	#define ATM_GETCIRANGE32 _IOW('a', ATMIOC_ITF+10, struct compat_atmif_sioc)
	213	#define ATM_SETCIRANGE32 _IOW('a', ATMIOC_ITF+11, struct compat_atmif_sioc)
	214	#define ATM_SETESI32 _IOW('a', ATMIOC_ITF+12, struct compat_atmif_sioc)
	215	#define ATM_SETESIF32 _IOW('a', ATMIOC_ITF+13, struct compat_atmif_sioc)
	216	#define ATM_GETSTAT32 _IOW('a', ATMIOC_SARCOM+0, struct compat_atmif_sioc)
	217	#define ATM_GETSTATZ32 _IOW('a', ATMIOC_SARCOM+1, struct compat_atmif_sioc)
	218	#define ATM_GETLOOP32 _IOW('a', ATMIOC_SARCOM+2, struct compat_atmif_sioc)
	219	#define ATM_SETLOOP32 _IOW('a', ATMIOC_SARCOM+3, struct compat_atmif_sioc)
	220	#define ATM_QUERYLOOP32 _IOW('a', ATMIOC_SARCOM+4, struct compat_atmif_sioc)
	221
	222	static struct {
	223	unsigned int cmd32;
	224	unsigned int cmd;
	225	} atm_ioctl_map[] = {
	226	{ ATM_GETLINKRATE32, ATM_GETLINKRATE },
	227	{ ATM_GETNAMES32, ATM_GETNAMES },
	228	{ ATM_GETTYPE32, ATM_GETTYPE },
	229	{ ATM_GETESI32, ATM_GETESI },
	230	{ ATM_GETADDR32, ATM_GETADDR },
	231	{ ATM_RSTADDR32, ATM_RSTADDR },
	232	{ ATM_ADDADDR32, ATM_ADDADDR },
	233	{ ATM_DELADDR32, ATM_DELADDR },
	234	{ ATM_GETCIRANGE32, ATM_GETCIRANGE },
	235	{ ATM_SETCIRANGE32, ATM_SETCIRANGE },
	236	{ ATM_SETESI32, ATM_SETESI },
	237	{ ATM_SETESIF32, ATM_SETESIF },
	238	{ ATM_GETSTAT32, ATM_GETSTAT },
	239	{ ATM_GETSTATZ32, ATM_GETSTATZ },
	240	{ ATM_GETLOOP32, ATM_GETLOOP },
	241	{ ATM_SETLOOP32, ATM_SETLOOP },
	242	{ ATM_QUERYLOOP32, ATM_QUERYLOOP },
	243	};
	244
	245	#define NR_ATM_IOCTL ARRAY_SIZE(atm_ioctl_map)
	246
	247	static int do_atm_iobuf(struct socket *sock, unsigned int cmd,
	248	unsigned long arg)
	249	{
	250	struct atm_iobuf __user *iobuf;
	251	struct compat_atm_iobuf __user *iobuf32;
	252	u32 data;
	253	void __user *datap;
	254	int len, err;
	255
	256	iobuf = compat_alloc_user_space(sizeof(*iobuf));
	257	iobuf32 = compat_ptr(arg);
258
259	if (get_user(len, &iobuf32->length) \|\|
260	get_user(data, &iobuf32->buffer))
261	return -EFAULT;
262	datap = compat_ptr(data);
263	if (put_user(len, &iobuf->length) \|\|
264	put_user(datap, &iobuf->buffer))
265	return -EFAULT;
266
267	err = do_vcc_ioctl(sock, cmd, (unsigned long) iobuf, 0);
268
269	if (!err) {
270	if (copy_in_user(&iobuf32->length, &iobuf->length,
271	sizeof(int)))
272	err = -EFAULT;
273	}
274
275	return err;
276	}
277
278	static int do_atmif_sioc(struct socket *sock, unsigned int cmd,
279	unsigned long arg)
280	{
281	struct atmif_sioc __user *sioc;
282	struct compat_atmif_sioc __user *sioc32;
283	u32 data;
284	void __user *datap;
285	int err;
286
287	sioc = compat_alloc_user_space(sizeof(*sioc));
288	sioc32 = compat_ptr(arg);
289
5ff7ef79 JP	290	if (copy_in_user(&sioc->number, &sioc32->number, 2 * sizeof(int)) \|\|
5ff7ef79 JP	291	get_user(data, &sioc32->arg))
805003a4 AB	292	return -EFAULT;
	293	datap = compat_ptr(data);
	294	if (put_user(datap, &sioc->arg))
	295	return -EFAULT;
	296
	297	err = do_vcc_ioctl(sock, cmd, (unsigned long) sioc, 0);
	298
	299	if (!err) {
	300	if (copy_in_user(&sioc32->length, &sioc->length,
	301	sizeof(int)))
	302	err = -EFAULT;
	303	}
	304	return err;
	305	}
	306
	307	static int do_atm_ioctl(struct socket *sock, unsigned int cmd32,
	308	unsigned long arg)
	309	{
	310	int i;
	311	unsigned int cmd = 0;
	312
	313	switch (cmd32) {
	314	case SONET_GETSTAT:
	315	case SONET_GETSTATZ:
	316	case SONET_GETDIAG:
	317	case SONET_SETDIAG:
	318	case SONET_CLRDIAG:
	319	case SONET_SETFRAMING:
	320	case SONET_GETFRAMING:
	321	case SONET_GETFRSENSE:
	322	return do_atmif_sioc(sock, cmd32, arg);
	323	}
	324
	325	for (i = 0; i < NR_ATM_IOCTL; i++) {
	326	if (cmd32 == atm_ioctl_map[i].cmd32) {
	327	cmd = atm_ioctl_map[i].cmd;
	328	break;
	329	}
	330	}
	331	if (i == NR_ATM_IOCTL)
	332	return -EINVAL;
	333
	334	switch (cmd) {
	335	case ATM_GETNAMES:
	336	return do_atm_iobuf(sock, cmd, arg);
	337
	338	case ATM_GETLINKRATE:
	339	case ATM_GETTYPE:
	340	case ATM_GETESI:
	341	case ATM_GETADDR:
	342	case ATM_RSTADDR:
	343	case ATM_ADDADDR:
	344	case ATM_DELADDR:
	345	case ATM_GETCIRANGE:
	346	case ATM_SETCIRANGE:
	347	case ATM_SETESI:
	348	case ATM_SETESIF:
	349	case ATM_GETSTAT:
	350	case ATM_GETSTATZ:
	351	case ATM_GETLOOP:
	352	case ATM_SETLOOP:
	353	case ATM_QUERYLOOP:
	354	return do_atmif_sioc(sock, cmd, arg);
	355	}
356
357	return -EINVAL;
358	}
359
360	int vcc_compat_ioctl(struct socket *sock, unsigned int cmd,
361	unsigned long arg)
8865c418	362	{
805003a4 AB	363	int ret;
	364
	365	ret = do_vcc_ioctl(sock, cmd, arg, 1);
	366	if (ret != -ENOIOCTLCMD)
	367	return ret;
	368
	369	return do_atm_ioctl(sock, cmd, arg);
8865c418 DW	370	}
8865c418 DW	371	#endif