1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
|
#include <linux/config.h>
#include <linux/compat.h>
#include <linux/videodev.h>
#include <linux/module.h>
#include <linux/smp_lock.h>
#ifdef CONFIG_COMPAT
struct video_tuner32 {
compat_int_t tuner;
char name[32];
compat_ulong_t rangelow, rangehigh;
u32 flags; /* It is really u32 in videodev.h */
u16 mode, signal;
};
static int get_video_tuner32(struct video_tuner *kp, struct video_tuner32 __user *up)
{
int i;
if(get_user(kp->tuner, &up->tuner))
return -EFAULT;
for(i = 0; i < 32; i++)
__get_user(kp->name[i], &up->name[i]);
__get_user(kp->rangelow, &up->rangelow);
__get_user(kp->rangehigh, &up->rangehigh);
__get_user(kp->flags, &up->flags);
__get_user(kp->mode, &up->mode);
__get_user(kp->signal, &up->signal);
return 0;
}
static int put_video_tuner32(struct video_tuner *kp, struct video_tuner32 __user *up)
{
int i;
if(put_user(kp->tuner, &up->tuner))
return -EFAULT;
for(i = 0; i < 32; i++)
__put_user(kp->name[i], &up->name[i]);
__put_user(kp->rangelow, &up->rangelow);
__put_user(kp->rangehigh, &up->rangehigh);
__put_user(kp->flags, &up->flags);
__put_user(kp->mode, &up->mode);
__put_user(kp->signal, &up->signal);
return 0;
}
struct video_buffer32 {
compat_caddr_t base;
compat_int_t height, width, depth, bytesperline;
};
static int get_video_buffer32(struct video_buffer *kp, struct video_buffer32 __user *up)
{
u32 tmp;
if (get_user(tmp, &up->base))
return -EFAULT;
/* This is actually a physical address stored
* as a void pointer.
*/
kp->base = (void *)(unsigned long) tmp;
__get_user(kp->height, &up->height);
__get_user(kp->width, &up->width);
__get_user(kp->depth, &up->depth);
__get_user(kp->bytesperline, &up->bytesperline);
return 0;
}
static int put_video_buffer32(struct video_buffer *kp, struct video_buffer32 __user *up)
{
u32 tmp = (u32)((unsigned long)kp->base);
if(put_user(tmp, &up->base))
return -EFAULT;
__put_user(kp->height, &up->height);
__put_user(kp->width, &up->width);
__put_user(kp->depth, &up->depth);
__put_user(kp->bytesperline, &up->bytesperline);
return 0;
}
struct video_clip32 {
s32 x, y, width, height; /* Its really s32 in videodev.h */
compat_caddr_t next;
};
struct video_window32 {
u32 x, y, width, height, chromakey, flags;
compat_caddr_t clips;
compat_int_t clipcount;
};
static int native_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
int ret = -ENOIOCTLCMD;
if (file->f_ops->unlocked_ioctl)
ret = file->f_ops->unlocked_ioctl(file, cmd, arg);
else if (file->f_ops->ioctl) {
lock_kernel();
ret = file->f_ops->ioctl(file->f_dentry->d_inode, file, cmd, arg);
unlock_kernel();
}
return ret;
}
/* You get back everything except the clips... */
static int put_video_window32(struct video_window *kp, struct video_window32 __user *up)
{
if(put_user(kp->x, &up->x))
return -EFAULT;
__put_user(kp->y, &up->y);
__put_user(kp->width, &up->width);
__put_user(kp->height, &up->height);
__put_user(kp->chromakey, &up->chromakey);
__put_user(kp->flags, &up->flags);
__put_user(kp->clipcount, &up->clipcount);
return 0;
}
#define VIDIOCGTUNER32 _IOWR('v',4, struct video_tuner32)
#define VIDIOCSTUNER32 _IOW('v',5, struct video_tuner32)
#define VIDIOCGWIN32 _IOR('v',9, struct video_window32)
#define VIDIOCSWIN32 _IOW('v',10, struct video_window32)
#define VIDIOCGFBUF32 _IOR('v',11, struct video_buffer32)
#define VIDIOCSFBUF32 _IOW('v',12, struct video_buffer32)
#define VIDIOCGFREQ32 _IOR('v',14, u32)
#define VIDIOCSFREQ32 _IOW('v',15, u32)
enum {
MaxClips = (~0U-sizeof(struct video_window))/sizeof(struct video_clip)
};
static int do_set_window(struct file *file, unsigned int cmd, unsigned long arg)
{
struct video_window32 __user *up = compat_ptr(arg);
struct video_window __user *vw;
struct video_clip __user *p;
int nclips;
u32 n;
if (get_user(nclips, &up->clipcount))
return -EFAULT;
/* Peculiar interface... */
if (nclips < 0)
nclips = VIDEO_CLIPMAP_SIZE;
if (nclips > MaxClips)
return -ENOMEM;
vw = compat_alloc_user_space(sizeof(struct video_window) +
nclips * sizeof(struct video_clip));
p = nclips ? (struct video_clip __user *)(vw + 1) : NULL;
if (get_user(n, &up->x) || put_user(n, &vw->x) ||
get_user(n, &up->y) || put_user(n, &vw->y) ||
get_user(n, &up->width) || put_user(n, &vw->width) ||
get_user(n, &up->height) || put_user(n, &vw->height) ||
get_user(n, &up->chromakey) || put_user(n, &vw->chromakey) ||
get_user(n, &up->flags) || put_user(n, &vw->flags) ||
get_user(n, &up->clipcount) || put_user(n, &vw->clipcount) ||
get_user(n, &up->clips) || put_user(p, &vw->clips))
return -EFAULT;
if (nclips) {
struct video_clip32 __user *u = compat_ptr(n);
int i;
if (!u)
return -EINVAL;
for (i = 0; i < nclips; i++, u++, p++) {
s32 v;
if (get_user(v, &u->x) ||
put_user(v, &p->x) ||
get_user(v, &u->y) ||
put_user(v, &p->y) ||
get_user(v, &u->width) ||
put_user(v, &p->width) ||
get_user(v, &u->height) ||
put_user(v, &p->height) ||
put_user(NULL, &p->next))
return -EFAULT;
}
}
return native_ioctl(file, VIDIOCSWIN, (unsigned long)p);
}
static int do_video_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
union {
struct video_tuner vt;
struct video_buffer vb;
struct video_window vw;
unsigned long vx;
} karg;
mm_segment_t old_fs = get_fs();
void __user *up = compat_ptr(arg);
int err = 0;
/* First, convert the command. */
switch(cmd) {
case VIDIOCGTUNER32: cmd = VIDIOCGTUNER; break;
case VIDIOCSTUNER32: cmd = VIDIOCSTUNER; break;
case VIDIOCGWIN32: cmd = VIDIOCGWIN; break;
case VIDIOCGFBUF32: cmd = VIDIOCGFBUF; break;
case VIDIOCSFBUF32: cmd = VIDIOCSFBUF; break;
case VIDIOCGFREQ32: cmd = VIDIOCGFREQ; break;
case VIDIOCSFREQ32: cmd = VIDIOCSFREQ; break;
};
switch(cmd) {
case VIDIOCSTUNER:
case VIDIOCGTUNER:
err = get_video_tuner32(&karg.vt, up);
break;
case VIDIOCSFBUF:
err = get_video_buffer32(&karg.vb, up);
break;
case VIDIOCSFREQ:
err = get_user(karg.vx, (u32 __user *)up);
break;
};
if(err)
goto out;
set_fs(KERNEL_DS);
err = native_ioctl(file, cmd, (unsigned long)&karg);
set_fs(old_fs);
if(err == 0) {
switch(cmd) {
case VIDIOCGTUNER:
err = put_video_tuner32(&karg.vt, up);
break;
case VIDIOCGWIN:
err = put_video_window32(&karg.vw, up);
break;
case VIDIOCGFBUF:
err = put_video_buffer32(&karg.vb, up);
break;
case VIDIOCGFREQ:
err = put_user(((u32)karg.vx), (u32 __user *)up);
break;
};
}
out:
return err;
}
long v4l_compat_ioctl32(struct file *file, unsigned int cmd, unsigned long arg)
{
int ret = -ENOIOCTLCMD;
if (!file->f_ops->ioctl)
return ret;
switch (cmd) {
case VIDIOCSWIN32:
ret = do_set_window(file, cmd, arg);
break;
case VIDIOCGTUNER32:
case VIDIOCSTUNER32:
case VIDIOCGWIN32:
case VIDIOCGFBUF32:
case VIDIOCSFBUF32:
case VIDIOCGFREQ32:
case VIDIOCSFREQ32:
ret = do_video_ioctl(file, cmd, arg);
break;
/* Little v, the video4linux ioctls (conflict?) */
case VIDIOCGCAP:
case VIDIOCGCHAN:
case VIDIOCSCHAN:
case VIDIOCGPICT:
case VIDIOCSPICT:
case VIDIOCCAPTURE:
case VIDIOCKEY:
case VIDIOCGAUDIO:
case VIDIOCSAUDIO:
case VIDIOCSYNC:
case VIDIOCMCAPTURE:
case VIDIOCGMBUF:
case VIDIOCGUNIT:
case VIDIOCGCAPTURE:
case VIDIOCSCAPTURE:
/* BTTV specific... */
case _IOW('v', BASE_VIDIOCPRIVATE+0, char [256]):
case _IOR('v', BASE_VIDIOCPRIVATE+1, char [256]):
case _IOR('v' , BASE_VIDIOCPRIVATE+2, unsigned int):
case _IOW('v' , BASE_VIDIOCPRIVATE+3, char [16]): /* struct bttv_pll_info */
case _IOR('v' , BASE_VIDIOCPRIVATE+4, int):
case _IOR('v' , BASE_VIDIOCPRIVATE+5, int):
case _IOR('v' , BASE_VIDIOCPRIVATE+6, int):
case _IOR('v' , BASE_VIDIOCPRIVATE+7, int):
ret = native_ioctl(file, cmd, (unsigned long)compat_ptr(arg));
break;
}
return ret;
}
#else
long v4l_compat_ioctl32(struct file *file, unsigned int cmd, unsigned long arg)
{
return -ENOIOCTLCMD;
}
#endif
EXPORT_SYMBOL_GPL(v4l_compat_ioctl32);
MODULE_LICENSE("GPL");
|
