aboutsummaryrefslogtreecommitdiffstats
path: root/net/atm/ioctl.c
diff options
context:
space:
mode:
Diffstat (limited to 'net/atm/ioctl.c')
-rw-r--r--net/atm/ioctl.c369
1 files changed, 271 insertions, 98 deletions
diff --git a/net/atm/ioctl.c b/net/atm/ioctl.c
index 4da8892ced5f..62dc8bfe6fe7 100644
--- a/net/atm/ioctl.c
+++ b/net/atm/ioctl.c
@@ -3,6 +3,7 @@
3/* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */ 3/* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */
4/* 2003 John Levon <levon@movementarian.org> */ 4/* 2003 John Levon <levon@movementarian.org> */
5 5
6#define pr_fmt(fmt) KBUILD_MODNAME ":%s: " fmt, __func__
6 7
7#include <linux/module.h> 8#include <linux/module.h>
8#include <linux/kmod.h> 9#include <linux/kmod.h>
@@ -36,6 +37,7 @@ void register_atm_ioctl(struct atm_ioctl *ioctl)
36 list_add_tail(&ioctl->list, &ioctl_list); 37 list_add_tail(&ioctl->list, &ioctl_list);
37 mutex_unlock(&ioctl_mutex); 38 mutex_unlock(&ioctl_mutex);
38} 39}
40EXPORT_SYMBOL(register_atm_ioctl);
39 41
40void deregister_atm_ioctl(struct atm_ioctl *ioctl) 42void deregister_atm_ioctl(struct atm_ioctl *ioctl)
41{ 43{
@@ -43,129 +45,128 @@ void deregister_atm_ioctl(struct atm_ioctl *ioctl)
43 list_del(&ioctl->list); 45 list_del(&ioctl->list);
44 mutex_unlock(&ioctl_mutex); 46 mutex_unlock(&ioctl_mutex);
45} 47}
46
47EXPORT_SYMBOL(register_atm_ioctl);
48EXPORT_SYMBOL(deregister_atm_ioctl); 48EXPORT_SYMBOL(deregister_atm_ioctl);
49 49
50static int do_vcc_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg, int compat) 50static int do_vcc_ioctl(struct socket *sock, unsigned int cmd,
51 unsigned long arg, int compat)
51{ 52{
52 struct sock *sk = sock->sk; 53 struct sock *sk = sock->sk;
53 struct atm_vcc *vcc; 54 struct atm_vcc *vcc;
54 int error; 55 int error;
55 struct list_head * pos; 56 struct list_head *pos;
56 void __user *argp = (void __user *)arg; 57 void __user *argp = (void __user *)arg;
57 58
58 vcc = ATM_SD(sock); 59 vcc = ATM_SD(sock);
59 switch (cmd) { 60 switch (cmd) {
60 case SIOCOUTQ: 61 case SIOCOUTQ:
61 if (sock->state != SS_CONNECTED || 62 if (sock->state != SS_CONNECTED ||
62 !test_bit(ATM_VF_READY, &vcc->flags)) { 63 !test_bit(ATM_VF_READY, &vcc->flags)) {
63 error = -EINVAL; 64 error = -EINVAL;
64 goto done; 65 goto done;
65 } 66 }
66 error = put_user(sk->sk_sndbuf - sk_wmem_alloc_get(sk), 67 error = put_user(sk->sk_sndbuf - sk_wmem_alloc_get(sk),
67 (int __user *) argp) ? -EFAULT : 0; 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;
68 goto done; 76 goto done;
69 case SIOCINQ: 77 }
70 { 78 skb = skb_peek(&sk->sk_receive_queue);
71 struct sk_buff *skb; 79 error = put_user(skb ? skb->len : 0,
72 80 (int __user *)argp) ? -EFAULT : 0;
73 if (sock->state != SS_CONNECTED) { 81 goto done;
74 error = -EINVAL; 82 }
75 goto done; 83 case SIOCGSTAMP: /* borrowed from IP */
76 }
77 skb = skb_peek(&sk->sk_receive_queue);
78 error = put_user(skb ? skb->len : 0,
79 (int __user *)argp) ? -EFAULT : 0;
80 goto done;
81 }
82 case SIOCGSTAMP: /* borrowed from IP */
83#ifdef CONFIG_COMPAT 84#ifdef CONFIG_COMPAT
84 if (compat) 85 if (compat)
85 error = compat_sock_get_timestamp(sk, argp); 86 error = compat_sock_get_timestamp(sk, argp);
86 else 87 else
87#endif 88#endif
88 error = sock_get_timestamp(sk, argp); 89 error = sock_get_timestamp(sk, argp);
89 goto done; 90 goto done;
90 case SIOCGSTAMPNS: /* borrowed from IP */ 91 case SIOCGSTAMPNS: /* borrowed from IP */
91#ifdef CONFIG_COMPAT 92#ifdef CONFIG_COMPAT
92 if (compat) 93 if (compat)
93 error = compat_sock_get_timestampns(sk, argp); 94 error = compat_sock_get_timestampns(sk, argp);
94 else 95 else
95#endif 96#endif
96 error = sock_get_timestampns(sk, argp); 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;
97 goto done; 108 goto done;
98 case ATM_SETSC: 109 }
99 if (net_ratelimit()) 110 /*
100 printk(KERN_WARNING "ATM_SETSC is obsolete; used by %s:%d\n", 111 * The user/kernel protocol for exchanging signalling
101 current->comm, task_pid_nr(current)); 112 * info uses kernel pointers as opaque references,
102 error = 0; 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;
103 goto done; 119 goto done;
104 case ATMSIGD_CTRL: 120 }
105 if (!capable(CAP_NET_ADMIN)) {
106 error = -EPERM;
107 goto done;
108 }
109 /*
110 * The user/kernel protocol for exchanging signalling
111 * info uses kernel pointers as opaque references,
112 * so the holder of the file descriptor can scribble
113 * on the kernel... so we should make sure that we
114 * have the same privileges that /proc/kcore needs
115 */
116 if (!capable(CAP_SYS_RAWIO)) {
117 error = -EPERM;
118 goto done;
119 }
120#ifdef CONFIG_COMPAT 121#ifdef CONFIG_COMPAT
121 /* WTF? I don't even want to _think_ about making this 122 /* WTF? I don't even want to _think_ about making this
122 work for 32-bit userspace. TBH I don't really want 123 work for 32-bit userspace. TBH I don't really want
123 to think about it at all. dwmw2. */ 124 to think about it at all. dwmw2. */
124 if (compat) { 125 if (compat) {
125 if (net_ratelimit()) 126 if (net_ratelimit())
126 printk(KERN_WARNING "32-bit task cannot be atmsigd\n"); 127 pr_warning("32-bit task cannot be atmsigd\n");
127 error = -EINVAL; 128 error = -EINVAL;
128 goto done; 129 goto done;
129 } 130 }
130#endif 131#endif
131 error = sigd_attach(vcc); 132 error = sigd_attach(vcc);
132 if (!error) 133 if (!error)
133 sock->state = SS_CONNECTED; 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)
134 goto done; 142 goto done;
135 case ATM_SETBACKEND: 143 switch (backend) {
136 case ATM_NEWBACKENDIF: 144 case ATM_BACKEND_PPP:
137 { 145 request_module("pppoatm");
138 atm_backend_t backend;
139 error = get_user(backend, (atm_backend_t __user *) argp);
140 if (error)
141 goto done;
142 switch (backend) {
143 case ATM_BACKEND_PPP:
144 request_module("pppoatm");
145 break;
146 case ATM_BACKEND_BR2684:
147 request_module("br2684");
148 break;
149 }
150 }
151 break;
152 case ATMMPC_CTRL:
153 case ATMMPC_DATA:
154 request_module("mpoa");
155 break; 146 break;
156 case ATMARPD_CTRL: 147 case ATM_BACKEND_BR2684:
157 request_module("clip"); 148 request_module("br2684");
158 break;
159 case ATMLEC_CTRL:
160 request_module("lec");
161 break; 149 break;
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;
162 } 163 }
163 164
164 error = -ENOIOCTLCMD; 165 error = -ENOIOCTLCMD;
165 166
166 mutex_lock(&ioctl_mutex); 167 mutex_lock(&ioctl_mutex);
167 list_for_each(pos, &ioctl_list) { 168 list_for_each(pos, &ioctl_list) {
168 struct atm_ioctl * ic = list_entry(pos, struct atm_ioctl, list); 169 struct atm_ioctl *ic = list_entry(pos, struct atm_ioctl, list);
169 if (try_module_get(ic->owner)) { 170 if (try_module_get(ic->owner)) {
170 error = ic->ioctl(sock, cmd, arg); 171 error = ic->ioctl(sock, cmd, arg);
171 module_put(ic->owner); 172 module_put(ic->owner);
@@ -184,15 +185,187 @@ done:
184 return error; 185 return error;
185} 186}
186 187
187
188int vcc_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) 188int vcc_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
189{ 189{
190 return do_vcc_ioctl(sock, cmd, arg, 0); 190 return do_vcc_ioctl(sock, cmd, arg, 0);
191} 191}
192 192
193#ifdef CONFIG_COMPAT 193#ifdef CONFIG_COMPAT
194int vcc_compat_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) 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
222static 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
247static 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
278static 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
290 if (copy_in_user(&sioc->number, &sioc32->number, 2 * sizeof(int)) ||
291 get_user(data, &sioc32->arg))
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
307static int do_atm_ioctl(struct socket *sock, unsigned int cmd32,
308 unsigned long arg)
195{ 309{
196 return do_vcc_ioctl(sock, cmd, arg, 1); 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
360int vcc_compat_ioctl(struct socket *sock, unsigned int cmd,
361 unsigned long arg)
362{
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);
197} 370}
198#endif 371#endif
generated by cgit v1.2.2 (git 2.25.0) at 2025-04-02 18:50:45 -0400