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

// SPDX-License-Identifier: GPL-2.0
/* 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;
	void __user *buf;
	int __user *len;

	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 ATM_SETSC:
		net_warn_ratelimited("ATM_SETSC is obsolete; used by %s:%d\n",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) {
			net_warn_ratelimited("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;

	if (cmd == ATM_GETNAMES) {
		if (IS_ENABLED(CONFIG_COMPAT) && compat) {
#ifdef CONFIG_COMPAT
			struct compat_atm_iobuf __user *ciobuf = argp;
			compat_uptr_t cbuf;
			len = &ciobuf->length;
			if (get_user(cbuf, &ciobuf->buffer))
				return -EFAULT;
			buf = compat_ptr(cbuf);
#endif
		} else {
			struct atm_iobuf __user *iobuf = argp;
			len = &iobuf->length;
			if (get_user(buf, &iobuf->buffer))
				return -EFAULT;
		}
		error = atm_getnames(buf, len);
	} else {
		int number;

		if (IS_ENABLED(CONFIG_COMPAT) && compat) {
#ifdef CONFIG_COMPAT
			struct compat_atmif_sioc __user *csioc = argp;
			compat_uptr_t carg;

			len = &csioc->length;
			if (get_user(carg, &csioc->arg))
				return -EFAULT;
			buf = compat_ptr(carg);
			if (get_user(number, &csioc->number))
				return -EFAULT;
#endif
		} else {
			struct atmif_sioc __user *sioc = argp;

			len = &sioc->length;
			if (get_user(buf, &sioc->arg))
				return -EFAULT;
			if (get_user(number, &sioc->number))
				return -EFAULT;
		}
		error = atm_dev_ioctl(cmd, buf, len, number, 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 compat_atm_iobuf __user *iobuf32 = compat_ptr(arg);
	u32 data;

	if (get_user(data, &iobuf32->buffer))
		return -EFAULT;

	return atm_getnames(&iobuf32->length, compat_ptr(data));
}

static int do_atmif_sioc(struct socket *sock, unsigned int cmd,
			 unsigned long arg)
{
	struct compat_atmif_sioc __user *sioc32 = compat_ptr(arg);
	int number;
	u32 data;

	if (get_user(data, &sioc32->arg) || get_user(number, &sioc32->number))
		return -EFAULT;
	return atm_dev_ioctl(cmd, compat_ptr(data), &sioc32->length, number, 0);
}

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
b2441318	1	// SPDX-License-Identifier: GPL-2.0
1da177e4 LT	2	/* ATM ioctl handling */
	3
	4	/* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */
	5	/* 2003 John Levon <[email protected]> */
	6
99824461	7	#define pr_fmt(fmt) KBUILD_MODNAME ":%s: " fmt, __func__
1da177e4	8
1da177e4 LT	9	#include <linux/module.h>
	10	#include <linux/kmod.h>
	11	#include <linux/net.h> /* struct socket, struct proto_ops */
	12	#include <linux/atm.h> /* ATM stuff */
	13	#include <linux/atmdev.h>
	14	#include <linux/atmclip.h> /* CLIP_ENCAP /
	15	#include <linux/atmarp.h> /* manifest constants */
4fc268d2	16	#include <linux/capability.h>
1da177e4 LT	17	#include <linux/sonet.h> /* for ioctls */
	18	#include <linux/atmsvc.h>
	19	#include <linux/atmmpc.h>
	20	#include <net/atmclip.h>
	21	#include <linux/atmlec.h>
4a3e2f71	22	#include <linux/mutex.h>
1da177e4	23	#include <asm/ioctls.h>
8865c418	24	#include <net/compat.h>
1da177e4 LT	25
	26	#include "resources.h"
	27	#include "signaling.h" /* for WAITING and sigd_attach */
295098e9	28	#include "common.h"
1da177e4 LT	29
1da177e4 LT	30
4a3e2f71	31	static DEFINE_MUTEX(ioctl_mutex);
1da177e4 LT	32	static LIST_HEAD(ioctl_list);
	33
	34
	35	void register_atm_ioctl(struct atm_ioctl *ioctl)
	36	{
4a3e2f71	37	mutex_lock(&ioctl_mutex);
1da177e4	38	list_add_tail(&ioctl->list, &ioctl_list);
4a3e2f71	39	mutex_unlock(&ioctl_mutex);
1da177e4	40	}
5ff7ef79	41	EXPORT_SYMBOL(register_atm_ioctl);
1da177e4 LT	42
	43	void deregister_atm_ioctl(struct atm_ioctl *ioctl)
	44	{
4a3e2f71	45	mutex_lock(&ioctl_mutex);
1da177e4	46	list_del(&ioctl->list);
4a3e2f71	47	mutex_unlock(&ioctl_mutex);
1da177e4	48	}
1da177e4 LT	49	EXPORT_SYMBOL(deregister_atm_ioctl);
1da177e4 LT	50
5ff7ef79 JP	51	static int do_vcc_ioctl(struct socket *sock, unsigned int cmd,
5ff7ef79 JP	52	unsigned long arg, int compat)
1da177e4 LT	53	{
	54	struct sock *sk = sock->sk;
	55	struct atm_vcc *vcc;
	56	int error;
5ff7ef79	57	struct list_head *pos;
1da177e4	58	void __user argp = (void __user )arg;
a3929484 AV	59	void __user *buf;
a3929484 AV	60	int __user *len;
1da177e4 LT	61
	62	vcc = ATM_SD(sock);
	63	switch (cmd) {
5ff7ef79 JP	64	case SIOCOUTQ:
	65	if (sock->state != SS_CONNECTED \|\|
	66	!test_bit(ATM_VF_READY, &vcc->flags)) {
	67	error = -EINVAL;
	68	goto done;
	69	}
	70	error = put_user(sk->sk_sndbuf - sk_wmem_alloc_get(sk),
	71	(int __user *)argp) ? -EFAULT : 0;
	72	goto done;
	73	case SIOCINQ:
	74	{
	75	struct sk_buff *skb;
	76
	77	if (sock->state != SS_CONNECTED) {
	78	error = -EINVAL;
1da177e4	79	goto done;
5ff7ef79 JP	80	}
	81	skb = skb_peek(&sk->sk_receive_queue);
	82	error = put_user(skb ? skb->len : 0,
	83	(int __user *)argp) ? -EFAULT : 0;
	84	goto done;
	85	}
5ff7ef79	86	case ATM_SETSC:
e87cc472 JP	87	net_warn_ratelimited("ATM_SETSC is obsolete; used by %s:%d\n",
e87cc472 JP	88	current->comm, task_pid_nr(current));
5ff7ef79 JP	89	error = 0;
	90	goto done;
	91	case ATMSIGD_CTRL:
	92	if (!capable(CAP_NET_ADMIN)) {
	93	error = -EPERM;
ae40eb1e	94	goto done;
5ff7ef79 JP	95	}
	96	/*
	97	* The user/kernel protocol for exchanging signalling
	98	* info uses kernel pointers as opaque references,
	99	* so the holder of the file descriptor can scribble
	100	* on the kernel... so we should make sure that we
	101	* have the same privileges that /proc/kcore needs
	102	*/
	103	if (!capable(CAP_SYS_RAWIO)) {
	104	error = -EPERM;
1da177e4	105	goto done;
5ff7ef79	106	}
8865c418	107	#ifdef CONFIG_COMPAT
5ff7ef79 JP	108	/* WTF? I don't even want to _think_ about making this
	109	work for 32-bit userspace. TBH I don't really want
	110	to think about it at all. dwmw2. */
	111	if (compat) {
e87cc472	112	net_warn_ratelimited("32-bit task cannot be atmsigd\n");
5ff7ef79 JP	113	error = -EINVAL;
	114	goto done;
	115	}
8865c418	116	#endif
5ff7ef79 JP	117	error = sigd_attach(vcc);
	118	if (!error)
	119	sock->state = SS_CONNECTED;
	120	goto done;
	121	case ATM_SETBACKEND:
	122	case ATM_NEWBACKENDIF:
	123	{
	124	atm_backend_t backend;
	125	error = get_user(backend, (atm_backend_t __user *)argp);
	126	if (error)
1da177e4	127	goto done;
5ff7ef79 JP	128	switch (backend) {
	129	case ATM_BACKEND_PPP:
	130	request_module("pppoatm");
e2c4b721	131	break;
5ff7ef79 JP	132	case ATM_BACKEND_BR2684:
5ff7ef79 JP	133	request_module("br2684");
1da177e4	134	break;
5ff7ef79 JP	135	}
	136	break;
	137	}
	138	case ATMMPC_CTRL:
	139	case ATMMPC_DATA:
	140	request_module("mpoa");
	141	break;
	142	case ATMARPD_CTRL:
	143	request_module("clip");
	144	break;
	145	case ATMLEC_CTRL:
	146	request_module("lec");
	147	break;
1da177e4 LT	148	}
1da177e4 LT	149
1da177e4 LT	150	error = -ENOIOCTLCMD;
1da177e4 LT	151
4a3e2f71	152	mutex_lock(&ioctl_mutex);
1da177e4	153	list_for_each(pos, &ioctl_list) {
5ff7ef79	154	struct atm_ioctl *ic = list_entry(pos, struct atm_ioctl, list);
1da177e4 LT	155	if (try_module_get(ic->owner)) {
	156	error = ic->ioctl(sock, cmd, arg);
	157	module_put(ic->owner);
	158	if (error != -ENOIOCTLCMD)
	159	break;
	160	}
	161	}
4a3e2f71	162	mutex_unlock(&ioctl_mutex);
1da177e4 LT	163
	164	if (error != -ENOIOCTLCMD)
	165	goto done;
	166
8c2348e3	167	if (cmd == ATM_GETNAMES) {
a3929484 AV	168	if (IS_ENABLED(CONFIG_COMPAT) && compat) {
	169	#ifdef CONFIG_COMPAT
	170	struct compat_atm_iobuf __user *ciobuf = argp;
	171	compat_uptr_t cbuf;
	172	len = &ciobuf->length;
	173	if (get_user(cbuf, &ciobuf->buffer))
	174	return -EFAULT;
	175	buf = compat_ptr(cbuf);
	176	#endif
	177	} else {
	178	struct atm_iobuf __user *iobuf = argp;
	179	len = &iobuf->length;
	180	if (get_user(buf, &iobuf->buffer))
	181	return -EFAULT;
	182	}
	183	error = atm_getnames(buf, len);
8c2348e3	184	} else {
8cacb416 AV	185	int number;
	186
	187	if (IS_ENABLED(CONFIG_COMPAT) && compat) {
	188	#ifdef CONFIG_COMPAT
	189	struct compat_atmif_sioc __user *csioc = argp;
	190	compat_uptr_t carg;
	191
	192	len = &csioc->length;
	193	if (get_user(carg, &csioc->arg))
	194	return -EFAULT;
	195	buf = compat_ptr(carg);
	196	if (get_user(number, &csioc->number))
	197	return -EFAULT;
	198	#endif
	199	} else {
	200	struct atmif_sioc __user *sioc = argp;
	201
	202	len = &sioc->length;
	203	if (get_user(buf, &sioc->arg))
	204	return -EFAULT;
	205	if (get_user(number, &sioc->number))
	206	return -EFAULT;
	207	}
	208	error = atm_dev_ioctl(cmd, buf, len, number, compat);
8c2348e3	209	}
1da177e4 LT	210
	211	done:
	212	return error;
	213	}
8865c418	214
8865c418 DW	215	int vcc_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
	216	{
	217	return do_vcc_ioctl(sock, cmd, arg, 0);
	218	}
	219
	220	#ifdef CONFIG_COMPAT
805003a4 AB	221	/*
	222	* FIXME:
	223	* The compat_ioctl handling is duplicated, using both these conversion
	224	* routines and the compat argument to the actual handlers. Both
	225	* versions are somewhat incomplete and should be merged, e.g. by
	226	* moving the ioctl number translation into the actual handlers and
	227	* killing the conversion code.
	228	*
	229	* -arnd, November 2009
	230	*/
	231	#define ATM_GETLINKRATE32 _IOW('a', ATMIOC_ITF+1, struct compat_atmif_sioc)
	232	#define ATM_GETNAMES32 _IOW('a', ATMIOC_ITF+3, struct compat_atm_iobuf)
	233	#define ATM_GETTYPE32 _IOW('a', ATMIOC_ITF+4, struct compat_atmif_sioc)
	234	#define ATM_GETESI32 _IOW('a', ATMIOC_ITF+5, struct compat_atmif_sioc)
	235	#define ATM_GETADDR32 _IOW('a', ATMIOC_ITF+6, struct compat_atmif_sioc)
	236	#define ATM_RSTADDR32 _IOW('a', ATMIOC_ITF+7, struct compat_atmif_sioc)
	237	#define ATM_ADDADDR32 _IOW('a', ATMIOC_ITF+8, struct compat_atmif_sioc)
	238	#define ATM_DELADDR32 _IOW('a', ATMIOC_ITF+9, struct compat_atmif_sioc)
	239	#define ATM_GETCIRANGE32 _IOW('a', ATMIOC_ITF+10, struct compat_atmif_sioc)
	240	#define ATM_SETCIRANGE32 _IOW('a', ATMIOC_ITF+11, struct compat_atmif_sioc)
	241	#define ATM_SETESI32 _IOW('a', ATMIOC_ITF+12, struct compat_atmif_sioc)
	242	#define ATM_SETESIF32 _IOW('a', ATMIOC_ITF+13, struct compat_atmif_sioc)
	243	#define ATM_GETSTAT32 _IOW('a', ATMIOC_SARCOM+0, struct compat_atmif_sioc)
	244	#define ATM_GETSTATZ32 _IOW('a', ATMIOC_SARCOM+1, struct compat_atmif_sioc)
	245	#define ATM_GETLOOP32 _IOW('a', ATMIOC_SARCOM+2, struct compat_atmif_sioc)
	246	#define ATM_SETLOOP32 _IOW('a', ATMIOC_SARCOM+3, struct compat_atmif_sioc)
	247	#define ATM_QUERYLOOP32 _IOW('a', ATMIOC_SARCOM+4, struct compat_atmif_sioc)
	248
	249	static struct {
	250	unsigned int cmd32;
	251	unsigned int cmd;
	252	} atm_ioctl_map[] = {
	253	{ ATM_GETLINKRATE32, ATM_GETLINKRATE },
	254	{ ATM_GETNAMES32, ATM_GETNAMES },
	255	{ ATM_GETTYPE32, ATM_GETTYPE },
	256	{ ATM_GETESI32, ATM_GETESI },
	257	{ ATM_GETADDR32, ATM_GETADDR },
	258	{ ATM_RSTADDR32, ATM_RSTADDR },
	259	{ ATM_ADDADDR32, ATM_ADDADDR },
	260	{ ATM_DELADDR32, ATM_DELADDR },
	261	{ ATM_GETCIRANGE32, ATM_GETCIRANGE },
	262	{ ATM_SETCIRANGE32, ATM_SETCIRANGE },
	263	{ ATM_SETESI32, ATM_SETESI },
	264	{ ATM_SETESIF32, ATM_SETESIF },
	265	{ ATM_GETSTAT32, ATM_GETSTAT },
	266	{ ATM_GETSTATZ32, ATM_GETSTATZ },
	267	{ ATM_GETLOOP32, ATM_GETLOOP },
	268	{ ATM_SETLOOP32, ATM_SETLOOP },
	269	{ ATM_QUERYLOOP32, ATM_QUERYLOOP },
	270	};
	271
	272	#define NR_ATM_IOCTL ARRAY_SIZE(atm_ioctl_map)
	273
	274	static int do_atm_iobuf(struct socket *sock, unsigned int cmd,
	275	unsigned long arg)
	276	{
36085049	277	struct compat_atm_iobuf __user *iobuf32 = compat_ptr(arg);
805003a4	278	u32 data;
805003a4	279
36085049	280	if (get_user(data, &iobuf32->buffer))
805003a4 AB	281	return -EFAULT;
805003a4 AB	282
36085049	283	return atm_getnames(&iobuf32->length, compat_ptr(data));
805003a4 AB	284	}
	285
	286	static int do_atmif_sioc(struct socket *sock, unsigned int cmd,
	287	unsigned long arg)
	288	{
0edecc02 AV	289	struct compat_atmif_sioc __user *sioc32 = compat_ptr(arg);
0edecc02 AV	290	int number;
805003a4	291	u32 data;
805003a4	292
0edecc02	293	if (get_user(data, &sioc32->arg) \|\| get_user(number, &sioc32->number))
805003a4	294	return -EFAULT;
0edecc02	295	return atm_dev_ioctl(cmd, compat_ptr(data), &sioc32->length, number, 0);
805003a4 AB	296	}
	297
	298	static int do_atm_ioctl(struct socket *sock, unsigned int cmd32,
	299	unsigned long arg)
	300	{
	301	int i;
	302	unsigned int cmd = 0;
	303
	304	switch (cmd32) {
	305	case SONET_GETSTAT:
	306	case SONET_GETSTATZ:
	307	case SONET_GETDIAG:
	308	case SONET_SETDIAG:
	309	case SONET_CLRDIAG:
	310	case SONET_SETFRAMING:
	311	case SONET_GETFRAMING:
	312	case SONET_GETFRSENSE:
	313	return do_atmif_sioc(sock, cmd32, arg);
	314	}
	315
	316	for (i = 0; i < NR_ATM_IOCTL; i++) {
	317	if (cmd32 == atm_ioctl_map[i].cmd32) {
	318	cmd = atm_ioctl_map[i].cmd;
	319	break;
	320	}
	321	}
	322	if (i == NR_ATM_IOCTL)
	323	return -EINVAL;
	324
	325	switch (cmd) {
	326	case ATM_GETNAMES:
	327	return do_atm_iobuf(sock, cmd, arg);
	328
	329	case ATM_GETLINKRATE:
	330	case ATM_GETTYPE:
	331	case ATM_GETESI:
	332	case ATM_GETADDR:
	333	case ATM_RSTADDR:
	334	case ATM_ADDADDR:
	335	case ATM_DELADDR:
	336	case ATM_GETCIRANGE:
	337	case ATM_SETCIRANGE:
	338	case ATM_SETESI:
	339	case ATM_SETESIF:
	340	case ATM_GETSTAT:
	341	case ATM_GETSTATZ:
	342	case ATM_GETLOOP:
	343	case ATM_SETLOOP:
	344	case ATM_QUERYLOOP:
	345	return do_atmif_sioc(sock, cmd, arg);
	346	}
	347
	348	return -EINVAL;
	349	}
	350
	351	int vcc_compat_ioctl(struct socket *sock, unsigned int cmd,
	352	unsigned long arg)
8865c418	353	{
805003a4 AB	354	int ret;
	355
	356	ret = do_vcc_ioctl(sock, cmd, arg, 1);
	357	if (ret != -ENOIOCTLCMD)
	358	return ret;
	359
	360	return do_atm_ioctl(sock, cmd, arg);
8865c418 DW	361	}
8865c418 DW	362	#endif