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35ea11ff HV |
1 | /* |
2 | * Video capture interface for Linux version 2 | |
3 | * | |
4 | * A generic framework to process V4L2 ioctl commands. | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or | |
7 | * modify it under the terms of the GNU General Public License | |
8 | * as published by the Free Software Foundation; either version | |
9 | * 2 of the License, or (at your option) any later version. | |
10 | * | |
d9b01449 | 11 | * Authors: Alan Cox, <alan@lxorguk.ukuu.org.uk> (version 1) |
35ea11ff HV |
12 | * Mauro Carvalho Chehab <mchehab@infradead.org> (version 2) |
13 | */ | |
14 | ||
15 | #include <linux/module.h> | |
16 | #include <linux/types.h> | |
17 | #include <linux/kernel.h> | |
18 | ||
19 | #define __OLD_VIDIOC_ /* To allow fixing old calls */ | |
7e0a16f6 | 20 | #include <linux/videodev.h> |
35ea11ff HV |
21 | #include <linux/videodev2.h> |
22 | ||
23 | #ifdef CONFIG_VIDEO_V4L1 | |
24 | #include <linux/videodev.h> | |
25 | #endif | |
26 | #include <media/v4l2-common.h> | |
27 | #include <media/v4l2-ioctl.h> | |
80b36e0f | 28 | #include <media/v4l2-chip-ident.h> |
35ea11ff HV |
29 | |
30 | #define dbgarg(cmd, fmt, arg...) \ | |
31 | do { \ | |
32 | if (vfd->debug & V4L2_DEBUG_IOCTL_ARG) { \ | |
33 | printk(KERN_DEBUG "%s: ", vfd->name); \ | |
34 | v4l_printk_ioctl(cmd); \ | |
35 | printk(" " fmt, ## arg); \ | |
36 | } \ | |
37 | } while (0) | |
38 | ||
39 | #define dbgarg2(fmt, arg...) \ | |
40 | do { \ | |
41 | if (vfd->debug & V4L2_DEBUG_IOCTL_ARG) \ | |
42 | printk(KERN_DEBUG "%s: " fmt, vfd->name, ## arg);\ | |
43 | } while (0) | |
44 | ||
45 | struct std_descr { | |
46 | v4l2_std_id std; | |
47 | const char *descr; | |
48 | }; | |
49 | ||
50 | static const struct std_descr standards[] = { | |
51 | { V4L2_STD_NTSC, "NTSC" }, | |
52 | { V4L2_STD_NTSC_M, "NTSC-M" }, | |
53 | { V4L2_STD_NTSC_M_JP, "NTSC-M-JP" }, | |
54 | { V4L2_STD_NTSC_M_KR, "NTSC-M-KR" }, | |
55 | { V4L2_STD_NTSC_443, "NTSC-443" }, | |
56 | { V4L2_STD_PAL, "PAL" }, | |
57 | { V4L2_STD_PAL_BG, "PAL-BG" }, | |
58 | { V4L2_STD_PAL_B, "PAL-B" }, | |
59 | { V4L2_STD_PAL_B1, "PAL-B1" }, | |
60 | { V4L2_STD_PAL_G, "PAL-G" }, | |
61 | { V4L2_STD_PAL_H, "PAL-H" }, | |
62 | { V4L2_STD_PAL_I, "PAL-I" }, | |
63 | { V4L2_STD_PAL_DK, "PAL-DK" }, | |
64 | { V4L2_STD_PAL_D, "PAL-D" }, | |
65 | { V4L2_STD_PAL_D1, "PAL-D1" }, | |
66 | { V4L2_STD_PAL_K, "PAL-K" }, | |
67 | { V4L2_STD_PAL_M, "PAL-M" }, | |
68 | { V4L2_STD_PAL_N, "PAL-N" }, | |
69 | { V4L2_STD_PAL_Nc, "PAL-Nc" }, | |
70 | { V4L2_STD_PAL_60, "PAL-60" }, | |
71 | { V4L2_STD_SECAM, "SECAM" }, | |
72 | { V4L2_STD_SECAM_B, "SECAM-B" }, | |
73 | { V4L2_STD_SECAM_G, "SECAM-G" }, | |
74 | { V4L2_STD_SECAM_H, "SECAM-H" }, | |
75 | { V4L2_STD_SECAM_DK, "SECAM-DK" }, | |
76 | { V4L2_STD_SECAM_D, "SECAM-D" }, | |
77 | { V4L2_STD_SECAM_K, "SECAM-K" }, | |
78 | { V4L2_STD_SECAM_K1, "SECAM-K1" }, | |
79 | { V4L2_STD_SECAM_L, "SECAM-L" }, | |
80 | { V4L2_STD_SECAM_LC, "SECAM-Lc" }, | |
81 | { 0, "Unknown" } | |
82 | }; | |
83 | ||
84 | /* video4linux standard ID conversion to standard name | |
85 | */ | |
86 | const char *v4l2_norm_to_name(v4l2_std_id id) | |
87 | { | |
88 | u32 myid = id; | |
89 | int i; | |
90 | ||
91 | /* HACK: ppc32 architecture doesn't have __ucmpdi2 function to handle | |
92 | 64 bit comparations. So, on that architecture, with some gcc | |
93 | variants, compilation fails. Currently, the max value is 30bit wide. | |
94 | */ | |
95 | BUG_ON(myid != id); | |
96 | ||
97 | for (i = 0; standards[i].std; i++) | |
98 | if (myid == standards[i].std) | |
99 | break; | |
100 | return standards[i].descr; | |
101 | } | |
102 | EXPORT_SYMBOL(v4l2_norm_to_name); | |
103 | ||
51f0b8d5 TP |
104 | /* Returns frame period for the given standard */ |
105 | void v4l2_video_std_frame_period(int id, struct v4l2_fract *frameperiod) | |
106 | { | |
107 | if (id & V4L2_STD_525_60) { | |
108 | frameperiod->numerator = 1001; | |
109 | frameperiod->denominator = 30000; | |
110 | } else { | |
111 | frameperiod->numerator = 1; | |
112 | frameperiod->denominator = 25; | |
113 | } | |
114 | } | |
115 | EXPORT_SYMBOL(v4l2_video_std_frame_period); | |
116 | ||
35ea11ff HV |
117 | /* Fill in the fields of a v4l2_standard structure according to the |
118 | 'id' and 'transmission' parameters. Returns negative on error. */ | |
119 | int v4l2_video_std_construct(struct v4l2_standard *vs, | |
120 | int id, const char *name) | |
121 | { | |
51f0b8d5 TP |
122 | vs->id = id; |
123 | v4l2_video_std_frame_period(id, &vs->frameperiod); | |
124 | vs->framelines = (id & V4L2_STD_525_60) ? 525 : 625; | |
35ea11ff HV |
125 | strlcpy(vs->name, name, sizeof(vs->name)); |
126 | return 0; | |
127 | } | |
128 | EXPORT_SYMBOL(v4l2_video_std_construct); | |
129 | ||
130 | /* ----------------------------------------------------------------- */ | |
131 | /* some arrays for pretty-printing debug messages of enum types */ | |
132 | ||
133 | const char *v4l2_field_names[] = { | |
134 | [V4L2_FIELD_ANY] = "any", | |
135 | [V4L2_FIELD_NONE] = "none", | |
136 | [V4L2_FIELD_TOP] = "top", | |
137 | [V4L2_FIELD_BOTTOM] = "bottom", | |
138 | [V4L2_FIELD_INTERLACED] = "interlaced", | |
139 | [V4L2_FIELD_SEQ_TB] = "seq-tb", | |
140 | [V4L2_FIELD_SEQ_BT] = "seq-bt", | |
141 | [V4L2_FIELD_ALTERNATE] = "alternate", | |
142 | [V4L2_FIELD_INTERLACED_TB] = "interlaced-tb", | |
143 | [V4L2_FIELD_INTERLACED_BT] = "interlaced-bt", | |
144 | }; | |
145 | EXPORT_SYMBOL(v4l2_field_names); | |
146 | ||
147 | const char *v4l2_type_names[] = { | |
148 | [V4L2_BUF_TYPE_VIDEO_CAPTURE] = "vid-cap", | |
149 | [V4L2_BUF_TYPE_VIDEO_OVERLAY] = "vid-overlay", | |
150 | [V4L2_BUF_TYPE_VIDEO_OUTPUT] = "vid-out", | |
151 | [V4L2_BUF_TYPE_VBI_CAPTURE] = "vbi-cap", | |
152 | [V4L2_BUF_TYPE_VBI_OUTPUT] = "vbi-out", | |
153 | [V4L2_BUF_TYPE_SLICED_VBI_CAPTURE] = "sliced-vbi-cap", | |
154 | [V4L2_BUF_TYPE_SLICED_VBI_OUTPUT] = "sliced-vbi-out", | |
155 | [V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY] = "vid-out-overlay", | |
156 | }; | |
157 | EXPORT_SYMBOL(v4l2_type_names); | |
158 | ||
159 | static const char *v4l2_memory_names[] = { | |
160 | [V4L2_MEMORY_MMAP] = "mmap", | |
161 | [V4L2_MEMORY_USERPTR] = "userptr", | |
162 | [V4L2_MEMORY_OVERLAY] = "overlay", | |
163 | }; | |
164 | ||
165 | #define prt_names(a, arr) ((((a) >= 0) && ((a) < ARRAY_SIZE(arr))) ? \ | |
166 | arr[a] : "unknown") | |
167 | ||
168 | /* ------------------------------------------------------------------ */ | |
169 | /* debug help functions */ | |
170 | ||
171 | #ifdef CONFIG_VIDEO_V4L1_COMPAT | |
172 | static const char *v4l1_ioctls[] = { | |
173 | [_IOC_NR(VIDIOCGCAP)] = "VIDIOCGCAP", | |
174 | [_IOC_NR(VIDIOCGCHAN)] = "VIDIOCGCHAN", | |
175 | [_IOC_NR(VIDIOCSCHAN)] = "VIDIOCSCHAN", | |
176 | [_IOC_NR(VIDIOCGTUNER)] = "VIDIOCGTUNER", | |
177 | [_IOC_NR(VIDIOCSTUNER)] = "VIDIOCSTUNER", | |
178 | [_IOC_NR(VIDIOCGPICT)] = "VIDIOCGPICT", | |
179 | [_IOC_NR(VIDIOCSPICT)] = "VIDIOCSPICT", | |
180 | [_IOC_NR(VIDIOCCAPTURE)] = "VIDIOCCAPTURE", | |
181 | [_IOC_NR(VIDIOCGWIN)] = "VIDIOCGWIN", | |
182 | [_IOC_NR(VIDIOCSWIN)] = "VIDIOCSWIN", | |
183 | [_IOC_NR(VIDIOCGFBUF)] = "VIDIOCGFBUF", | |
184 | [_IOC_NR(VIDIOCSFBUF)] = "VIDIOCSFBUF", | |
185 | [_IOC_NR(VIDIOCKEY)] = "VIDIOCKEY", | |
186 | [_IOC_NR(VIDIOCGFREQ)] = "VIDIOCGFREQ", | |
187 | [_IOC_NR(VIDIOCSFREQ)] = "VIDIOCSFREQ", | |
188 | [_IOC_NR(VIDIOCGAUDIO)] = "VIDIOCGAUDIO", | |
189 | [_IOC_NR(VIDIOCSAUDIO)] = "VIDIOCSAUDIO", | |
190 | [_IOC_NR(VIDIOCSYNC)] = "VIDIOCSYNC", | |
191 | [_IOC_NR(VIDIOCMCAPTURE)] = "VIDIOCMCAPTURE", | |
192 | [_IOC_NR(VIDIOCGMBUF)] = "VIDIOCGMBUF", | |
193 | [_IOC_NR(VIDIOCGUNIT)] = "VIDIOCGUNIT", | |
194 | [_IOC_NR(VIDIOCGCAPTURE)] = "VIDIOCGCAPTURE", | |
195 | [_IOC_NR(VIDIOCSCAPTURE)] = "VIDIOCSCAPTURE", | |
196 | [_IOC_NR(VIDIOCSPLAYMODE)] = "VIDIOCSPLAYMODE", | |
197 | [_IOC_NR(VIDIOCSWRITEMODE)] = "VIDIOCSWRITEMODE", | |
198 | [_IOC_NR(VIDIOCGPLAYINFO)] = "VIDIOCGPLAYINFO", | |
199 | [_IOC_NR(VIDIOCSMICROCODE)] = "VIDIOCSMICROCODE", | |
200 | [_IOC_NR(VIDIOCGVBIFMT)] = "VIDIOCGVBIFMT", | |
201 | [_IOC_NR(VIDIOCSVBIFMT)] = "VIDIOCSVBIFMT" | |
202 | }; | |
203 | #define V4L1_IOCTLS ARRAY_SIZE(v4l1_ioctls) | |
204 | #endif | |
205 | ||
206 | static const char *v4l2_ioctls[] = { | |
207 | [_IOC_NR(VIDIOC_QUERYCAP)] = "VIDIOC_QUERYCAP", | |
208 | [_IOC_NR(VIDIOC_RESERVED)] = "VIDIOC_RESERVED", | |
209 | [_IOC_NR(VIDIOC_ENUM_FMT)] = "VIDIOC_ENUM_FMT", | |
210 | [_IOC_NR(VIDIOC_G_FMT)] = "VIDIOC_G_FMT", | |
211 | [_IOC_NR(VIDIOC_S_FMT)] = "VIDIOC_S_FMT", | |
212 | [_IOC_NR(VIDIOC_REQBUFS)] = "VIDIOC_REQBUFS", | |
213 | [_IOC_NR(VIDIOC_QUERYBUF)] = "VIDIOC_QUERYBUF", | |
214 | [_IOC_NR(VIDIOC_G_FBUF)] = "VIDIOC_G_FBUF", | |
215 | [_IOC_NR(VIDIOC_S_FBUF)] = "VIDIOC_S_FBUF", | |
216 | [_IOC_NR(VIDIOC_OVERLAY)] = "VIDIOC_OVERLAY", | |
217 | [_IOC_NR(VIDIOC_QBUF)] = "VIDIOC_QBUF", | |
218 | [_IOC_NR(VIDIOC_DQBUF)] = "VIDIOC_DQBUF", | |
219 | [_IOC_NR(VIDIOC_STREAMON)] = "VIDIOC_STREAMON", | |
220 | [_IOC_NR(VIDIOC_STREAMOFF)] = "VIDIOC_STREAMOFF", | |
221 | [_IOC_NR(VIDIOC_G_PARM)] = "VIDIOC_G_PARM", | |
222 | [_IOC_NR(VIDIOC_S_PARM)] = "VIDIOC_S_PARM", | |
223 | [_IOC_NR(VIDIOC_G_STD)] = "VIDIOC_G_STD", | |
224 | [_IOC_NR(VIDIOC_S_STD)] = "VIDIOC_S_STD", | |
225 | [_IOC_NR(VIDIOC_ENUMSTD)] = "VIDIOC_ENUMSTD", | |
226 | [_IOC_NR(VIDIOC_ENUMINPUT)] = "VIDIOC_ENUMINPUT", | |
227 | [_IOC_NR(VIDIOC_G_CTRL)] = "VIDIOC_G_CTRL", | |
228 | [_IOC_NR(VIDIOC_S_CTRL)] = "VIDIOC_S_CTRL", | |
229 | [_IOC_NR(VIDIOC_G_TUNER)] = "VIDIOC_G_TUNER", | |
230 | [_IOC_NR(VIDIOC_S_TUNER)] = "VIDIOC_S_TUNER", | |
231 | [_IOC_NR(VIDIOC_G_AUDIO)] = "VIDIOC_G_AUDIO", | |
232 | [_IOC_NR(VIDIOC_S_AUDIO)] = "VIDIOC_S_AUDIO", | |
233 | [_IOC_NR(VIDIOC_QUERYCTRL)] = "VIDIOC_QUERYCTRL", | |
234 | [_IOC_NR(VIDIOC_QUERYMENU)] = "VIDIOC_QUERYMENU", | |
235 | [_IOC_NR(VIDIOC_G_INPUT)] = "VIDIOC_G_INPUT", | |
236 | [_IOC_NR(VIDIOC_S_INPUT)] = "VIDIOC_S_INPUT", | |
237 | [_IOC_NR(VIDIOC_G_OUTPUT)] = "VIDIOC_G_OUTPUT", | |
238 | [_IOC_NR(VIDIOC_S_OUTPUT)] = "VIDIOC_S_OUTPUT", | |
239 | [_IOC_NR(VIDIOC_ENUMOUTPUT)] = "VIDIOC_ENUMOUTPUT", | |
240 | [_IOC_NR(VIDIOC_G_AUDOUT)] = "VIDIOC_G_AUDOUT", | |
241 | [_IOC_NR(VIDIOC_S_AUDOUT)] = "VIDIOC_S_AUDOUT", | |
242 | [_IOC_NR(VIDIOC_G_MODULATOR)] = "VIDIOC_G_MODULATOR", | |
243 | [_IOC_NR(VIDIOC_S_MODULATOR)] = "VIDIOC_S_MODULATOR", | |
244 | [_IOC_NR(VIDIOC_G_FREQUENCY)] = "VIDIOC_G_FREQUENCY", | |
245 | [_IOC_NR(VIDIOC_S_FREQUENCY)] = "VIDIOC_S_FREQUENCY", | |
246 | [_IOC_NR(VIDIOC_CROPCAP)] = "VIDIOC_CROPCAP", | |
247 | [_IOC_NR(VIDIOC_G_CROP)] = "VIDIOC_G_CROP", | |
248 | [_IOC_NR(VIDIOC_S_CROP)] = "VIDIOC_S_CROP", | |
249 | [_IOC_NR(VIDIOC_G_JPEGCOMP)] = "VIDIOC_G_JPEGCOMP", | |
250 | [_IOC_NR(VIDIOC_S_JPEGCOMP)] = "VIDIOC_S_JPEGCOMP", | |
251 | [_IOC_NR(VIDIOC_QUERYSTD)] = "VIDIOC_QUERYSTD", | |
252 | [_IOC_NR(VIDIOC_TRY_FMT)] = "VIDIOC_TRY_FMT", | |
253 | [_IOC_NR(VIDIOC_ENUMAUDIO)] = "VIDIOC_ENUMAUDIO", | |
254 | [_IOC_NR(VIDIOC_ENUMAUDOUT)] = "VIDIOC_ENUMAUDOUT", | |
255 | [_IOC_NR(VIDIOC_G_PRIORITY)] = "VIDIOC_G_PRIORITY", | |
256 | [_IOC_NR(VIDIOC_S_PRIORITY)] = "VIDIOC_S_PRIORITY", | |
257 | [_IOC_NR(VIDIOC_G_SLICED_VBI_CAP)] = "VIDIOC_G_SLICED_VBI_CAP", | |
258 | [_IOC_NR(VIDIOC_LOG_STATUS)] = "VIDIOC_LOG_STATUS", | |
259 | [_IOC_NR(VIDIOC_G_EXT_CTRLS)] = "VIDIOC_G_EXT_CTRLS", | |
260 | [_IOC_NR(VIDIOC_S_EXT_CTRLS)] = "VIDIOC_S_EXT_CTRLS", | |
261 | [_IOC_NR(VIDIOC_TRY_EXT_CTRLS)] = "VIDIOC_TRY_EXT_CTRLS", | |
262 | #if 1 | |
263 | [_IOC_NR(VIDIOC_ENUM_FRAMESIZES)] = "VIDIOC_ENUM_FRAMESIZES", | |
264 | [_IOC_NR(VIDIOC_ENUM_FRAMEINTERVALS)] = "VIDIOC_ENUM_FRAMEINTERVALS", | |
265 | [_IOC_NR(VIDIOC_G_ENC_INDEX)] = "VIDIOC_G_ENC_INDEX", | |
266 | [_IOC_NR(VIDIOC_ENCODER_CMD)] = "VIDIOC_ENCODER_CMD", | |
267 | [_IOC_NR(VIDIOC_TRY_ENCODER_CMD)] = "VIDIOC_TRY_ENCODER_CMD", | |
268 | ||
269 | [_IOC_NR(VIDIOC_DBG_S_REGISTER)] = "VIDIOC_DBG_S_REGISTER", | |
270 | [_IOC_NR(VIDIOC_DBG_G_REGISTER)] = "VIDIOC_DBG_G_REGISTER", | |
271 | ||
aecde8b5 | 272 | [_IOC_NR(VIDIOC_DBG_G_CHIP_IDENT)] = "VIDIOC_DBG_G_CHIP_IDENT", |
35ea11ff HV |
273 | [_IOC_NR(VIDIOC_S_HW_FREQ_SEEK)] = "VIDIOC_S_HW_FREQ_SEEK", |
274 | #endif | |
275 | }; | |
276 | #define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls) | |
277 | ||
35ea11ff HV |
278 | /* Common ioctl debug function. This function can be used by |
279 | external ioctl messages as well as internal V4L ioctl */ | |
280 | void v4l_printk_ioctl(unsigned int cmd) | |
281 | { | |
282 | char *dir, *type; | |
283 | ||
284 | switch (_IOC_TYPE(cmd)) { | |
285 | case 'd': | |
78a3b4db HV |
286 | type = "v4l2_int"; |
287 | break; | |
35ea11ff HV |
288 | #ifdef CONFIG_VIDEO_V4L1_COMPAT |
289 | case 'v': | |
290 | if (_IOC_NR(cmd) >= V4L1_IOCTLS) { | |
291 | type = "v4l1"; | |
292 | break; | |
293 | } | |
294 | printk("%s", v4l1_ioctls[_IOC_NR(cmd)]); | |
295 | return; | |
296 | #endif | |
297 | case 'V': | |
298 | if (_IOC_NR(cmd) >= V4L2_IOCTLS) { | |
299 | type = "v4l2"; | |
300 | break; | |
301 | } | |
302 | printk("%s", v4l2_ioctls[_IOC_NR(cmd)]); | |
303 | return; | |
304 | default: | |
305 | type = "unknown"; | |
306 | } | |
307 | ||
308 | switch (_IOC_DIR(cmd)) { | |
309 | case _IOC_NONE: dir = "--"; break; | |
310 | case _IOC_READ: dir = "r-"; break; | |
311 | case _IOC_WRITE: dir = "-w"; break; | |
312 | case _IOC_READ | _IOC_WRITE: dir = "rw"; break; | |
313 | default: dir = "*ERR*"; break; | |
314 | } | |
315 | printk("%s ioctl '%c', dir=%s, #%d (0x%08x)", | |
316 | type, _IOC_TYPE(cmd), dir, _IOC_NR(cmd), cmd); | |
317 | } | |
318 | EXPORT_SYMBOL(v4l_printk_ioctl); | |
319 | ||
320 | /* | |
321 | * helper function -- handles userspace copying for ioctl arguments | |
322 | */ | |
323 | ||
324 | #ifdef __OLD_VIDIOC_ | |
325 | static unsigned int | |
326 | video_fix_command(unsigned int cmd) | |
327 | { | |
328 | switch (cmd) { | |
329 | case VIDIOC_OVERLAY_OLD: | |
330 | cmd = VIDIOC_OVERLAY; | |
331 | break; | |
332 | case VIDIOC_S_PARM_OLD: | |
333 | cmd = VIDIOC_S_PARM; | |
334 | break; | |
335 | case VIDIOC_S_CTRL_OLD: | |
336 | cmd = VIDIOC_S_CTRL; | |
337 | break; | |
338 | case VIDIOC_G_AUDIO_OLD: | |
339 | cmd = VIDIOC_G_AUDIO; | |
340 | break; | |
341 | case VIDIOC_G_AUDOUT_OLD: | |
342 | cmd = VIDIOC_G_AUDOUT; | |
343 | break; | |
344 | case VIDIOC_CROPCAP_OLD: | |
345 | cmd = VIDIOC_CROPCAP; | |
346 | break; | |
347 | } | |
348 | return cmd; | |
349 | } | |
350 | #endif | |
351 | ||
352 | /* | |
353 | * Obsolete usercopy function - Should be removed soon | |
354 | */ | |
069b7479 | 355 | long |
f473bf76 HV |
356 | video_usercopy(struct file *file, unsigned int cmd, unsigned long arg, |
357 | v4l2_kioctl func) | |
35ea11ff HV |
358 | { |
359 | char sbuf[128]; | |
360 | void *mbuf = NULL; | |
361 | void *parg = NULL; | |
069b7479 | 362 | long err = -EINVAL; |
35ea11ff HV |
363 | int is_ext_ctrl; |
364 | size_t ctrls_size = 0; | |
365 | void __user *user_ptr = NULL; | |
366 | ||
367 | #ifdef __OLD_VIDIOC_ | |
368 | cmd = video_fix_command(cmd); | |
369 | #endif | |
370 | is_ext_ctrl = (cmd == VIDIOC_S_EXT_CTRLS || cmd == VIDIOC_G_EXT_CTRLS || | |
371 | cmd == VIDIOC_TRY_EXT_CTRLS); | |
372 | ||
373 | /* Copy arguments into temp kernel buffer */ | |
374 | switch (_IOC_DIR(cmd)) { | |
375 | case _IOC_NONE: | |
376 | parg = NULL; | |
377 | break; | |
378 | case _IOC_READ: | |
379 | case _IOC_WRITE: | |
380 | case (_IOC_WRITE | _IOC_READ): | |
381 | if (_IOC_SIZE(cmd) <= sizeof(sbuf)) { | |
382 | parg = sbuf; | |
383 | } else { | |
384 | /* too big to allocate from stack */ | |
385 | mbuf = kmalloc(_IOC_SIZE(cmd), GFP_KERNEL); | |
386 | if (NULL == mbuf) | |
387 | return -ENOMEM; | |
388 | parg = mbuf; | |
389 | } | |
390 | ||
391 | err = -EFAULT; | |
392 | if (_IOC_DIR(cmd) & _IOC_WRITE) | |
393 | if (copy_from_user(parg, (void __user *)arg, _IOC_SIZE(cmd))) | |
394 | goto out; | |
395 | break; | |
396 | } | |
397 | if (is_ext_ctrl) { | |
398 | struct v4l2_ext_controls *p = parg; | |
399 | ||
400 | /* In case of an error, tell the caller that it wasn't | |
401 | a specific control that caused it. */ | |
402 | p->error_idx = p->count; | |
403 | user_ptr = (void __user *)p->controls; | |
404 | if (p->count) { | |
405 | ctrls_size = sizeof(struct v4l2_ext_control) * p->count; | |
406 | /* Note: v4l2_ext_controls fits in sbuf[] so mbuf is still NULL. */ | |
407 | mbuf = kmalloc(ctrls_size, GFP_KERNEL); | |
408 | err = -ENOMEM; | |
409 | if (NULL == mbuf) | |
410 | goto out_ext_ctrl; | |
411 | err = -EFAULT; | |
412 | if (copy_from_user(mbuf, user_ptr, ctrls_size)) | |
413 | goto out_ext_ctrl; | |
414 | p->controls = mbuf; | |
415 | } | |
416 | } | |
417 | ||
418 | /* call driver */ | |
f473bf76 | 419 | err = func(file, cmd, parg); |
35ea11ff HV |
420 | if (err == -ENOIOCTLCMD) |
421 | err = -EINVAL; | |
422 | if (is_ext_ctrl) { | |
423 | struct v4l2_ext_controls *p = parg; | |
424 | ||
425 | p->controls = (void *)user_ptr; | |
426 | if (p->count && err == 0 && copy_to_user(user_ptr, mbuf, ctrls_size)) | |
427 | err = -EFAULT; | |
428 | goto out_ext_ctrl; | |
429 | } | |
430 | if (err < 0) | |
431 | goto out; | |
432 | ||
433 | out_ext_ctrl: | |
434 | /* Copy results into user buffer */ | |
435 | switch (_IOC_DIR(cmd)) { | |
436 | case _IOC_READ: | |
437 | case (_IOC_WRITE | _IOC_READ): | |
438 | if (copy_to_user((void __user *)arg, parg, _IOC_SIZE(cmd))) | |
439 | err = -EFAULT; | |
440 | break; | |
441 | } | |
442 | ||
443 | out: | |
444 | kfree(mbuf); | |
445 | return err; | |
446 | } | |
447 | EXPORT_SYMBOL(video_usercopy); | |
448 | ||
449 | static void dbgbuf(unsigned int cmd, struct video_device *vfd, | |
450 | struct v4l2_buffer *p) | |
451 | { | |
452 | struct v4l2_timecode *tc = &p->timecode; | |
453 | ||
454 | dbgarg(cmd, "%02ld:%02d:%02d.%08ld index=%d, type=%s, " | |
455 | "bytesused=%d, flags=0x%08d, " | |
456 | "field=%0d, sequence=%d, memory=%s, offset/userptr=0x%08lx, length=%d\n", | |
457 | p->timestamp.tv_sec / 3600, | |
458 | (int)(p->timestamp.tv_sec / 60) % 60, | |
459 | (int)(p->timestamp.tv_sec % 60), | |
b045979d | 460 | (long)p->timestamp.tv_usec, |
35ea11ff HV |
461 | p->index, |
462 | prt_names(p->type, v4l2_type_names), | |
463 | p->bytesused, p->flags, | |
464 | p->field, p->sequence, | |
465 | prt_names(p->memory, v4l2_memory_names), | |
466 | p->m.userptr, p->length); | |
467 | dbgarg2("timecode=%02d:%02d:%02d type=%d, " | |
468 | "flags=0x%08d, frames=%d, userbits=0x%08x\n", | |
469 | tc->hours, tc->minutes, tc->seconds, | |
470 | tc->type, tc->flags, tc->frames, *(__u32 *)tc->userbits); | |
471 | } | |
472 | ||
473 | static inline void dbgrect(struct video_device *vfd, char *s, | |
474 | struct v4l2_rect *r) | |
475 | { | |
476 | dbgarg2("%sRect start at %dx%d, size=%dx%d\n", s, r->left, r->top, | |
477 | r->width, r->height); | |
478 | }; | |
479 | ||
480 | static inline void v4l_print_pix_fmt(struct video_device *vfd, | |
481 | struct v4l2_pix_format *fmt) | |
482 | { | |
483 | dbgarg2("width=%d, height=%d, format=%c%c%c%c, field=%s, " | |
484 | "bytesperline=%d sizeimage=%d, colorspace=%d\n", | |
485 | fmt->width, fmt->height, | |
486 | (fmt->pixelformat & 0xff), | |
487 | (fmt->pixelformat >> 8) & 0xff, | |
488 | (fmt->pixelformat >> 16) & 0xff, | |
489 | (fmt->pixelformat >> 24) & 0xff, | |
490 | prt_names(fmt->field, v4l2_field_names), | |
491 | fmt->bytesperline, fmt->sizeimage, fmt->colorspace); | |
492 | }; | |
493 | ||
494 | static inline void v4l_print_ext_ctrls(unsigned int cmd, | |
495 | struct video_device *vfd, struct v4l2_ext_controls *c, int show_vals) | |
496 | { | |
497 | __u32 i; | |
498 | ||
499 | if (!(vfd->debug & V4L2_DEBUG_IOCTL_ARG)) | |
500 | return; | |
501 | dbgarg(cmd, ""); | |
502 | printk(KERN_CONT "class=0x%x", c->ctrl_class); | |
503 | for (i = 0; i < c->count; i++) { | |
504 | if (show_vals) | |
505 | printk(KERN_CONT " id/val=0x%x/0x%x", | |
506 | c->controls[i].id, c->controls[i].value); | |
507 | else | |
508 | printk(KERN_CONT " id=0x%x", c->controls[i].id); | |
509 | } | |
510 | printk(KERN_CONT "\n"); | |
511 | }; | |
512 | ||
513 | static inline int check_ext_ctrls(struct v4l2_ext_controls *c, int allow_priv) | |
514 | { | |
515 | __u32 i; | |
516 | ||
517 | /* zero the reserved fields */ | |
518 | c->reserved[0] = c->reserved[1] = 0; | |
519 | for (i = 0; i < c->count; i++) { | |
520 | c->controls[i].reserved2[0] = 0; | |
521 | c->controls[i].reserved2[1] = 0; | |
522 | } | |
523 | /* V4L2_CID_PRIVATE_BASE cannot be used as control class | |
524 | when using extended controls. | |
525 | Only when passed in through VIDIOC_G_CTRL and VIDIOC_S_CTRL | |
526 | is it allowed for backwards compatibility. | |
527 | */ | |
528 | if (!allow_priv && c->ctrl_class == V4L2_CID_PRIVATE_BASE) | |
529 | return 0; | |
530 | /* Check that all controls are from the same control class. */ | |
531 | for (i = 0; i < c->count; i++) { | |
532 | if (V4L2_CTRL_ID2CLASS(c->controls[i].id) != c->ctrl_class) { | |
533 | c->error_idx = i; | |
534 | return 0; | |
535 | } | |
536 | } | |
537 | return 1; | |
538 | } | |
539 | ||
a399810c | 540 | static int check_fmt(const struct v4l2_ioctl_ops *ops, enum v4l2_buf_type type) |
35ea11ff | 541 | { |
a399810c HV |
542 | if (ops == NULL) |
543 | return -EINVAL; | |
544 | ||
35ea11ff HV |
545 | switch (type) { |
546 | case V4L2_BUF_TYPE_VIDEO_CAPTURE: | |
1175d613 | 547 | if (ops->vidioc_g_fmt_vid_cap) |
35ea11ff HV |
548 | return 0; |
549 | break; | |
550 | case V4L2_BUF_TYPE_VIDEO_OVERLAY: | |
1175d613 | 551 | if (ops->vidioc_g_fmt_vid_overlay) |
35ea11ff HV |
552 | return 0; |
553 | break; | |
554 | case V4L2_BUF_TYPE_VIDEO_OUTPUT: | |
1175d613 | 555 | if (ops->vidioc_g_fmt_vid_out) |
35ea11ff HV |
556 | return 0; |
557 | break; | |
558 | case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: | |
1175d613 | 559 | if (ops->vidioc_g_fmt_vid_out_overlay) |
35ea11ff HV |
560 | return 0; |
561 | break; | |
562 | case V4L2_BUF_TYPE_VBI_CAPTURE: | |
1175d613 | 563 | if (ops->vidioc_g_fmt_vbi_cap) |
35ea11ff HV |
564 | return 0; |
565 | break; | |
566 | case V4L2_BUF_TYPE_VBI_OUTPUT: | |
1175d613 | 567 | if (ops->vidioc_g_fmt_vbi_out) |
35ea11ff HV |
568 | return 0; |
569 | break; | |
570 | case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: | |
1175d613 | 571 | if (ops->vidioc_g_fmt_sliced_vbi_cap) |
35ea11ff HV |
572 | return 0; |
573 | break; | |
574 | case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: | |
1175d613 | 575 | if (ops->vidioc_g_fmt_sliced_vbi_out) |
35ea11ff HV |
576 | return 0; |
577 | break; | |
578 | case V4L2_BUF_TYPE_PRIVATE: | |
1175d613 | 579 | if (ops->vidioc_g_fmt_type_private) |
35ea11ff HV |
580 | return 0; |
581 | break; | |
582 | } | |
583 | return -EINVAL; | |
584 | } | |
585 | ||
069b7479 | 586 | static long __video_do_ioctl(struct file *file, |
35ea11ff HV |
587 | unsigned int cmd, void *arg) |
588 | { | |
589 | struct video_device *vfd = video_devdata(file); | |
a399810c | 590 | const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops; |
d5fbf32f | 591 | void *fh = file->private_data; |
069b7479 | 592 | long ret = -EINVAL; |
35ea11ff HV |
593 | |
594 | if ((vfd->debug & V4L2_DEBUG_IOCTL) && | |
595 | !(vfd->debug & V4L2_DEBUG_IOCTL_ARG)) { | |
596 | v4l_print_ioctl(vfd->name, cmd); | |
597 | printk(KERN_CONT "\n"); | |
598 | } | |
599 | ||
a399810c HV |
600 | if (ops == NULL) { |
601 | printk(KERN_WARNING "videodev: \"%s\" has no ioctl_ops.\n", | |
602 | vfd->name); | |
603 | return -EINVAL; | |
604 | } | |
605 | ||
35ea11ff HV |
606 | #ifdef CONFIG_VIDEO_V4L1_COMPAT |
607 | /*********************************************************** | |
608 | Handles calls to the obsoleted V4L1 API | |
609 | Due to the nature of VIDIOCGMBUF, each driver that supports | |
610 | V4L1 should implement its own handler for this ioctl. | |
611 | ***********************************************************/ | |
612 | ||
613 | /* --- streaming capture ------------------------------------- */ | |
614 | if (cmd == VIDIOCGMBUF) { | |
615 | struct video_mbuf *p = arg; | |
616 | ||
a399810c | 617 | if (!ops->vidiocgmbuf) |
35ea11ff | 618 | return ret; |
a399810c | 619 | ret = ops->vidiocgmbuf(file, fh, p); |
35ea11ff HV |
620 | if (!ret) |
621 | dbgarg(cmd, "size=%d, frames=%d, offsets=0x%08lx\n", | |
622 | p->size, p->frames, | |
623 | (unsigned long)p->offsets); | |
624 | return ret; | |
625 | } | |
626 | ||
627 | /******************************************************** | |
628 | All other V4L1 calls are handled by v4l1_compat module. | |
629 | Those calls will be translated into V4L2 calls, and | |
630 | __video_do_ioctl will be called again, with one or more | |
631 | V4L2 ioctls. | |
632 | ********************************************************/ | |
888fe747 | 633 | if (_IOC_TYPE(cmd) == 'v' && _IOC_NR(cmd) < BASE_VIDIOCPRIVATE) |
b1f88407 | 634 | return v4l_compat_translate_ioctl(file, cmd, arg, |
35ea11ff HV |
635 | __video_do_ioctl); |
636 | #endif | |
637 | ||
638 | switch (cmd) { | |
639 | /* --- capabilities ------------------------------------------ */ | |
640 | case VIDIOC_QUERYCAP: | |
641 | { | |
642 | struct v4l2_capability *cap = (struct v4l2_capability *)arg; | |
35ea11ff | 643 | |
a399810c | 644 | if (!ops->vidioc_querycap) |
35ea11ff HV |
645 | break; |
646 | ||
a399810c | 647 | ret = ops->vidioc_querycap(file, fh, cap); |
35ea11ff HV |
648 | if (!ret) |
649 | dbgarg(cmd, "driver=%s, card=%s, bus=%s, " | |
650 | "version=0x%08x, " | |
651 | "capabilities=0x%08x\n", | |
652 | cap->driver, cap->card, cap->bus_info, | |
653 | cap->version, | |
654 | cap->capabilities); | |
655 | break; | |
656 | } | |
657 | ||
658 | /* --- priority ------------------------------------------ */ | |
659 | case VIDIOC_G_PRIORITY: | |
660 | { | |
661 | enum v4l2_priority *p = arg; | |
662 | ||
a399810c | 663 | if (!ops->vidioc_g_priority) |
35ea11ff | 664 | break; |
a399810c | 665 | ret = ops->vidioc_g_priority(file, fh, p); |
35ea11ff HV |
666 | if (!ret) |
667 | dbgarg(cmd, "priority is %d\n", *p); | |
668 | break; | |
669 | } | |
670 | case VIDIOC_S_PRIORITY: | |
671 | { | |
672 | enum v4l2_priority *p = arg; | |
673 | ||
a399810c | 674 | if (!ops->vidioc_s_priority) |
35ea11ff HV |
675 | break; |
676 | dbgarg(cmd, "setting priority to %d\n", *p); | |
a399810c | 677 | ret = ops->vidioc_s_priority(file, fh, *p); |
35ea11ff HV |
678 | break; |
679 | } | |
680 | ||
681 | /* --- capture ioctls ---------------------------------------- */ | |
682 | case VIDIOC_ENUM_FMT: | |
683 | { | |
684 | struct v4l2_fmtdesc *f = arg; | |
35ea11ff | 685 | |
19c96e4b | 686 | switch (f->type) { |
35ea11ff | 687 | case V4L2_BUF_TYPE_VIDEO_CAPTURE: |
a399810c HV |
688 | if (ops->vidioc_enum_fmt_vid_cap) |
689 | ret = ops->vidioc_enum_fmt_vid_cap(file, fh, f); | |
35ea11ff HV |
690 | break; |
691 | case V4L2_BUF_TYPE_VIDEO_OVERLAY: | |
a399810c HV |
692 | if (ops->vidioc_enum_fmt_vid_overlay) |
693 | ret = ops->vidioc_enum_fmt_vid_overlay(file, | |
35ea11ff HV |
694 | fh, f); |
695 | break; | |
35ea11ff | 696 | case V4L2_BUF_TYPE_VIDEO_OUTPUT: |
a399810c HV |
697 | if (ops->vidioc_enum_fmt_vid_out) |
698 | ret = ops->vidioc_enum_fmt_vid_out(file, fh, f); | |
35ea11ff HV |
699 | break; |
700 | case V4L2_BUF_TYPE_PRIVATE: | |
a399810c HV |
701 | if (ops->vidioc_enum_fmt_type_private) |
702 | ret = ops->vidioc_enum_fmt_type_private(file, | |
35ea11ff HV |
703 | fh, f); |
704 | break; | |
705 | default: | |
706 | break; | |
707 | } | |
708 | if (!ret) | |
709 | dbgarg(cmd, "index=%d, type=%d, flags=%d, " | |
710 | "pixelformat=%c%c%c%c, description='%s'\n", | |
711 | f->index, f->type, f->flags, | |
712 | (f->pixelformat & 0xff), | |
713 | (f->pixelformat >> 8) & 0xff, | |
714 | (f->pixelformat >> 16) & 0xff, | |
715 | (f->pixelformat >> 24) & 0xff, | |
716 | f->description); | |
717 | break; | |
718 | } | |
719 | case VIDIOC_G_FMT: | |
720 | { | |
721 | struct v4l2_format *f = (struct v4l2_format *)arg; | |
722 | ||
35ea11ff HV |
723 | /* FIXME: Should be one dump per type */ |
724 | dbgarg(cmd, "type=%s\n", prt_names(f->type, v4l2_type_names)); | |
725 | ||
726 | switch (f->type) { | |
727 | case V4L2_BUF_TYPE_VIDEO_CAPTURE: | |
a399810c HV |
728 | if (ops->vidioc_g_fmt_vid_cap) |
729 | ret = ops->vidioc_g_fmt_vid_cap(file, fh, f); | |
35ea11ff HV |
730 | if (!ret) |
731 | v4l_print_pix_fmt(vfd, &f->fmt.pix); | |
732 | break; | |
733 | case V4L2_BUF_TYPE_VIDEO_OVERLAY: | |
a399810c HV |
734 | if (ops->vidioc_g_fmt_vid_overlay) |
735 | ret = ops->vidioc_g_fmt_vid_overlay(file, | |
35ea11ff HV |
736 | fh, f); |
737 | break; | |
738 | case V4L2_BUF_TYPE_VIDEO_OUTPUT: | |
a399810c HV |
739 | if (ops->vidioc_g_fmt_vid_out) |
740 | ret = ops->vidioc_g_fmt_vid_out(file, fh, f); | |
35ea11ff HV |
741 | if (!ret) |
742 | v4l_print_pix_fmt(vfd, &f->fmt.pix); | |
743 | break; | |
744 | case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: | |
a399810c HV |
745 | if (ops->vidioc_g_fmt_vid_out_overlay) |
746 | ret = ops->vidioc_g_fmt_vid_out_overlay(file, | |
35ea11ff HV |
747 | fh, f); |
748 | break; | |
749 | case V4L2_BUF_TYPE_VBI_CAPTURE: | |
a399810c HV |
750 | if (ops->vidioc_g_fmt_vbi_cap) |
751 | ret = ops->vidioc_g_fmt_vbi_cap(file, fh, f); | |
35ea11ff HV |
752 | break; |
753 | case V4L2_BUF_TYPE_VBI_OUTPUT: | |
a399810c HV |
754 | if (ops->vidioc_g_fmt_vbi_out) |
755 | ret = ops->vidioc_g_fmt_vbi_out(file, fh, f); | |
35ea11ff HV |
756 | break; |
757 | case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: | |
a399810c HV |
758 | if (ops->vidioc_g_fmt_sliced_vbi_cap) |
759 | ret = ops->vidioc_g_fmt_sliced_vbi_cap(file, | |
35ea11ff HV |
760 | fh, f); |
761 | break; | |
762 | case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: | |
a399810c HV |
763 | if (ops->vidioc_g_fmt_sliced_vbi_out) |
764 | ret = ops->vidioc_g_fmt_sliced_vbi_out(file, | |
35ea11ff HV |
765 | fh, f); |
766 | break; | |
767 | case V4L2_BUF_TYPE_PRIVATE: | |
a399810c HV |
768 | if (ops->vidioc_g_fmt_type_private) |
769 | ret = ops->vidioc_g_fmt_type_private(file, | |
35ea11ff HV |
770 | fh, f); |
771 | break; | |
772 | } | |
773 | ||
774 | break; | |
775 | } | |
776 | case VIDIOC_S_FMT: | |
777 | { | |
778 | struct v4l2_format *f = (struct v4l2_format *)arg; | |
779 | ||
780 | /* FIXME: Should be one dump per type */ | |
781 | dbgarg(cmd, "type=%s\n", prt_names(f->type, v4l2_type_names)); | |
782 | ||
783 | switch (f->type) { | |
784 | case V4L2_BUF_TYPE_VIDEO_CAPTURE: | |
785 | v4l_print_pix_fmt(vfd, &f->fmt.pix); | |
a399810c HV |
786 | if (ops->vidioc_s_fmt_vid_cap) |
787 | ret = ops->vidioc_s_fmt_vid_cap(file, fh, f); | |
35ea11ff HV |
788 | break; |
789 | case V4L2_BUF_TYPE_VIDEO_OVERLAY: | |
a399810c HV |
790 | if (ops->vidioc_s_fmt_vid_overlay) |
791 | ret = ops->vidioc_s_fmt_vid_overlay(file, | |
35ea11ff HV |
792 | fh, f); |
793 | break; | |
794 | case V4L2_BUF_TYPE_VIDEO_OUTPUT: | |
795 | v4l_print_pix_fmt(vfd, &f->fmt.pix); | |
a399810c HV |
796 | if (ops->vidioc_s_fmt_vid_out) |
797 | ret = ops->vidioc_s_fmt_vid_out(file, fh, f); | |
35ea11ff HV |
798 | break; |
799 | case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: | |
a399810c HV |
800 | if (ops->vidioc_s_fmt_vid_out_overlay) |
801 | ret = ops->vidioc_s_fmt_vid_out_overlay(file, | |
35ea11ff HV |
802 | fh, f); |
803 | break; | |
804 | case V4L2_BUF_TYPE_VBI_CAPTURE: | |
a399810c HV |
805 | if (ops->vidioc_s_fmt_vbi_cap) |
806 | ret = ops->vidioc_s_fmt_vbi_cap(file, fh, f); | |
35ea11ff HV |
807 | break; |
808 | case V4L2_BUF_TYPE_VBI_OUTPUT: | |
a399810c HV |
809 | if (ops->vidioc_s_fmt_vbi_out) |
810 | ret = ops->vidioc_s_fmt_vbi_out(file, fh, f); | |
35ea11ff HV |
811 | break; |
812 | case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: | |
a399810c HV |
813 | if (ops->vidioc_s_fmt_sliced_vbi_cap) |
814 | ret = ops->vidioc_s_fmt_sliced_vbi_cap(file, | |
35ea11ff HV |
815 | fh, f); |
816 | break; | |
817 | case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: | |
a399810c HV |
818 | if (ops->vidioc_s_fmt_sliced_vbi_out) |
819 | ret = ops->vidioc_s_fmt_sliced_vbi_out(file, | |
35ea11ff HV |
820 | fh, f); |
821 | break; | |
822 | case V4L2_BUF_TYPE_PRIVATE: | |
a399810c HV |
823 | if (ops->vidioc_s_fmt_type_private) |
824 | ret = ops->vidioc_s_fmt_type_private(file, | |
35ea11ff HV |
825 | fh, f); |
826 | break; | |
827 | } | |
828 | break; | |
829 | } | |
830 | case VIDIOC_TRY_FMT: | |
831 | { | |
832 | struct v4l2_format *f = (struct v4l2_format *)arg; | |
833 | ||
834 | /* FIXME: Should be one dump per type */ | |
835 | dbgarg(cmd, "type=%s\n", prt_names(f->type, | |
836 | v4l2_type_names)); | |
837 | switch (f->type) { | |
838 | case V4L2_BUF_TYPE_VIDEO_CAPTURE: | |
a399810c HV |
839 | if (ops->vidioc_try_fmt_vid_cap) |
840 | ret = ops->vidioc_try_fmt_vid_cap(file, fh, f); | |
35ea11ff HV |
841 | if (!ret) |
842 | v4l_print_pix_fmt(vfd, &f->fmt.pix); | |
843 | break; | |
844 | case V4L2_BUF_TYPE_VIDEO_OVERLAY: | |
a399810c HV |
845 | if (ops->vidioc_try_fmt_vid_overlay) |
846 | ret = ops->vidioc_try_fmt_vid_overlay(file, | |
35ea11ff HV |
847 | fh, f); |
848 | break; | |
849 | case V4L2_BUF_TYPE_VIDEO_OUTPUT: | |
a399810c HV |
850 | if (ops->vidioc_try_fmt_vid_out) |
851 | ret = ops->vidioc_try_fmt_vid_out(file, fh, f); | |
35ea11ff HV |
852 | if (!ret) |
853 | v4l_print_pix_fmt(vfd, &f->fmt.pix); | |
854 | break; | |
855 | case V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY: | |
a399810c HV |
856 | if (ops->vidioc_try_fmt_vid_out_overlay) |
857 | ret = ops->vidioc_try_fmt_vid_out_overlay(file, | |
35ea11ff HV |
858 | fh, f); |
859 | break; | |
860 | case V4L2_BUF_TYPE_VBI_CAPTURE: | |
a399810c HV |
861 | if (ops->vidioc_try_fmt_vbi_cap) |
862 | ret = ops->vidioc_try_fmt_vbi_cap(file, fh, f); | |
35ea11ff HV |
863 | break; |
864 | case V4L2_BUF_TYPE_VBI_OUTPUT: | |
a399810c HV |
865 | if (ops->vidioc_try_fmt_vbi_out) |
866 | ret = ops->vidioc_try_fmt_vbi_out(file, fh, f); | |
35ea11ff HV |
867 | break; |
868 | case V4L2_BUF_TYPE_SLICED_VBI_CAPTURE: | |
a399810c HV |
869 | if (ops->vidioc_try_fmt_sliced_vbi_cap) |
870 | ret = ops->vidioc_try_fmt_sliced_vbi_cap(file, | |
35ea11ff HV |
871 | fh, f); |
872 | break; | |
873 | case V4L2_BUF_TYPE_SLICED_VBI_OUTPUT: | |
a399810c HV |
874 | if (ops->vidioc_try_fmt_sliced_vbi_out) |
875 | ret = ops->vidioc_try_fmt_sliced_vbi_out(file, | |
35ea11ff HV |
876 | fh, f); |
877 | break; | |
878 | case V4L2_BUF_TYPE_PRIVATE: | |
a399810c HV |
879 | if (ops->vidioc_try_fmt_type_private) |
880 | ret = ops->vidioc_try_fmt_type_private(file, | |
35ea11ff HV |
881 | fh, f); |
882 | break; | |
883 | } | |
884 | ||
885 | break; | |
886 | } | |
887 | /* FIXME: Those buf reqs could be handled here, | |
888 | with some changes on videobuf to allow its header to be included at | |
889 | videodev2.h or being merged at videodev2. | |
890 | */ | |
891 | case VIDIOC_REQBUFS: | |
892 | { | |
893 | struct v4l2_requestbuffers *p = arg; | |
894 | ||
a399810c | 895 | if (!ops->vidioc_reqbufs) |
35ea11ff | 896 | break; |
a399810c | 897 | ret = check_fmt(ops, p->type); |
35ea11ff HV |
898 | if (ret) |
899 | break; | |
900 | ||
a399810c | 901 | ret = ops->vidioc_reqbufs(file, fh, p); |
35ea11ff HV |
902 | dbgarg(cmd, "count=%d, type=%s, memory=%s\n", |
903 | p->count, | |
904 | prt_names(p->type, v4l2_type_names), | |
905 | prt_names(p->memory, v4l2_memory_names)); | |
906 | break; | |
907 | } | |
908 | case VIDIOC_QUERYBUF: | |
909 | { | |
910 | struct v4l2_buffer *p = arg; | |
911 | ||
a399810c | 912 | if (!ops->vidioc_querybuf) |
35ea11ff | 913 | break; |
a399810c | 914 | ret = check_fmt(ops, p->type); |
35ea11ff HV |
915 | if (ret) |
916 | break; | |
917 | ||
a399810c | 918 | ret = ops->vidioc_querybuf(file, fh, p); |
35ea11ff HV |
919 | if (!ret) |
920 | dbgbuf(cmd, vfd, p); | |
921 | break; | |
922 | } | |
923 | case VIDIOC_QBUF: | |
924 | { | |
925 | struct v4l2_buffer *p = arg; | |
926 | ||
a399810c | 927 | if (!ops->vidioc_qbuf) |
35ea11ff | 928 | break; |
a399810c | 929 | ret = check_fmt(ops, p->type); |
35ea11ff HV |
930 | if (ret) |
931 | break; | |
932 | ||
a399810c | 933 | ret = ops->vidioc_qbuf(file, fh, p); |
35ea11ff HV |
934 | if (!ret) |
935 | dbgbuf(cmd, vfd, p); | |
936 | break; | |
937 | } | |
938 | case VIDIOC_DQBUF: | |
939 | { | |
940 | struct v4l2_buffer *p = arg; | |
941 | ||
a399810c | 942 | if (!ops->vidioc_dqbuf) |
35ea11ff | 943 | break; |
a399810c | 944 | ret = check_fmt(ops, p->type); |
35ea11ff HV |
945 | if (ret) |
946 | break; | |
947 | ||
a399810c | 948 | ret = ops->vidioc_dqbuf(file, fh, p); |
35ea11ff HV |
949 | if (!ret) |
950 | dbgbuf(cmd, vfd, p); | |
951 | break; | |
952 | } | |
953 | case VIDIOC_OVERLAY: | |
954 | { | |
955 | int *i = arg; | |
956 | ||
a399810c | 957 | if (!ops->vidioc_overlay) |
35ea11ff HV |
958 | break; |
959 | dbgarg(cmd, "value=%d\n", *i); | |
a399810c | 960 | ret = ops->vidioc_overlay(file, fh, *i); |
35ea11ff HV |
961 | break; |
962 | } | |
963 | case VIDIOC_G_FBUF: | |
964 | { | |
965 | struct v4l2_framebuffer *p = arg; | |
966 | ||
a399810c | 967 | if (!ops->vidioc_g_fbuf) |
35ea11ff | 968 | break; |
a399810c | 969 | ret = ops->vidioc_g_fbuf(file, fh, arg); |
35ea11ff HV |
970 | if (!ret) { |
971 | dbgarg(cmd, "capability=0x%x, flags=%d, base=0x%08lx\n", | |
972 | p->capability, p->flags, | |
973 | (unsigned long)p->base); | |
974 | v4l_print_pix_fmt(vfd, &p->fmt); | |
975 | } | |
976 | break; | |
977 | } | |
978 | case VIDIOC_S_FBUF: | |
979 | { | |
980 | struct v4l2_framebuffer *p = arg; | |
981 | ||
a399810c | 982 | if (!ops->vidioc_s_fbuf) |
35ea11ff HV |
983 | break; |
984 | dbgarg(cmd, "capability=0x%x, flags=%d, base=0x%08lx\n", | |
985 | p->capability, p->flags, (unsigned long)p->base); | |
986 | v4l_print_pix_fmt(vfd, &p->fmt); | |
a399810c | 987 | ret = ops->vidioc_s_fbuf(file, fh, arg); |
35ea11ff HV |
988 | break; |
989 | } | |
990 | case VIDIOC_STREAMON: | |
991 | { | |
992 | enum v4l2_buf_type i = *(int *)arg; | |
993 | ||
a399810c | 994 | if (!ops->vidioc_streamon) |
35ea11ff HV |
995 | break; |
996 | dbgarg(cmd, "type=%s\n", prt_names(i, v4l2_type_names)); | |
a399810c | 997 | ret = ops->vidioc_streamon(file, fh, i); |
35ea11ff HV |
998 | break; |
999 | } | |
1000 | case VIDIOC_STREAMOFF: | |
1001 | { | |
1002 | enum v4l2_buf_type i = *(int *)arg; | |
1003 | ||
a399810c | 1004 | if (!ops->vidioc_streamoff) |
35ea11ff HV |
1005 | break; |
1006 | dbgarg(cmd, "type=%s\n", prt_names(i, v4l2_type_names)); | |
a399810c | 1007 | ret = ops->vidioc_streamoff(file, fh, i); |
35ea11ff HV |
1008 | break; |
1009 | } | |
1010 | /* ---------- tv norms ---------- */ | |
1011 | case VIDIOC_ENUMSTD: | |
1012 | { | |
1013 | struct v4l2_standard *p = arg; | |
1014 | v4l2_std_id id = vfd->tvnorms, curr_id = 0; | |
1015 | unsigned int index = p->index, i, j = 0; | |
1016 | const char *descr = ""; | |
1017 | ||
1018 | /* Return norm array in a canonical way */ | |
1019 | for (i = 0; i <= index && id; i++) { | |
1020 | /* last std value in the standards array is 0, so this | |
1021 | while always ends there since (id & 0) == 0. */ | |
1022 | while ((id & standards[j].std) != standards[j].std) | |
1023 | j++; | |
1024 | curr_id = standards[j].std; | |
1025 | descr = standards[j].descr; | |
1026 | j++; | |
1027 | if (curr_id == 0) | |
1028 | break; | |
1029 | if (curr_id != V4L2_STD_PAL && | |
1030 | curr_id != V4L2_STD_SECAM && | |
1031 | curr_id != V4L2_STD_NTSC) | |
1032 | id &= ~curr_id; | |
1033 | } | |
1034 | if (i <= index) | |
1035 | return -EINVAL; | |
1036 | ||
1037 | v4l2_video_std_construct(p, curr_id, descr); | |
35ea11ff HV |
1038 | |
1039 | dbgarg(cmd, "index=%d, id=0x%Lx, name=%s, fps=%d/%d, " | |
1040 | "framelines=%d\n", p->index, | |
1041 | (unsigned long long)p->id, p->name, | |
1042 | p->frameperiod.numerator, | |
1043 | p->frameperiod.denominator, | |
1044 | p->framelines); | |
1045 | ||
1046 | ret = 0; | |
1047 | break; | |
1048 | } | |
1049 | case VIDIOC_G_STD: | |
1050 | { | |
1051 | v4l2_std_id *id = arg; | |
1052 | ||
1053 | ret = 0; | |
1054 | /* Calls the specific handler */ | |
a399810c HV |
1055 | if (ops->vidioc_g_std) |
1056 | ret = ops->vidioc_g_std(file, fh, id); | |
35ea11ff HV |
1057 | else |
1058 | *id = vfd->current_norm; | |
1059 | ||
1060 | if (!ret) | |
1061 | dbgarg(cmd, "std=0x%08Lx\n", (long long unsigned)*id); | |
1062 | break; | |
1063 | } | |
1064 | case VIDIOC_S_STD: | |
1065 | { | |
1066 | v4l2_std_id *id = arg, norm; | |
1067 | ||
1068 | dbgarg(cmd, "std=%08Lx\n", (long long unsigned)*id); | |
1069 | ||
1070 | norm = (*id) & vfd->tvnorms; | |
1071 | if (vfd->tvnorms && !norm) /* Check if std is supported */ | |
1072 | break; | |
1073 | ||
1074 | /* Calls the specific handler */ | |
a399810c HV |
1075 | if (ops->vidioc_s_std) |
1076 | ret = ops->vidioc_s_std(file, fh, &norm); | |
35ea11ff HV |
1077 | else |
1078 | ret = -EINVAL; | |
1079 | ||
1080 | /* Updates standard information */ | |
1081 | if (ret >= 0) | |
1082 | vfd->current_norm = norm; | |
1083 | break; | |
1084 | } | |
1085 | case VIDIOC_QUERYSTD: | |
1086 | { | |
1087 | v4l2_std_id *p = arg; | |
1088 | ||
a399810c | 1089 | if (!ops->vidioc_querystd) |
35ea11ff | 1090 | break; |
a399810c | 1091 | ret = ops->vidioc_querystd(file, fh, arg); |
35ea11ff HV |
1092 | if (!ret) |
1093 | dbgarg(cmd, "detected std=%08Lx\n", | |
1094 | (unsigned long long)*p); | |
1095 | break; | |
1096 | } | |
1097 | /* ------ input switching ---------- */ | |
1098 | /* FIXME: Inputs can be handled inside videodev2 */ | |
1099 | case VIDIOC_ENUMINPUT: | |
1100 | { | |
1101 | struct v4l2_input *p = arg; | |
35ea11ff | 1102 | |
a399810c | 1103 | if (!ops->vidioc_enum_input) |
35ea11ff | 1104 | break; |
35ea11ff | 1105 | |
a399810c | 1106 | ret = ops->vidioc_enum_input(file, fh, p); |
35ea11ff HV |
1107 | if (!ret) |
1108 | dbgarg(cmd, "index=%d, name=%s, type=%d, " | |
1109 | "audioset=%d, " | |
1110 | "tuner=%d, std=%08Lx, status=%d\n", | |
1111 | p->index, p->name, p->type, p->audioset, | |
1112 | p->tuner, | |
1113 | (unsigned long long)p->std, | |
1114 | p->status); | |
1115 | break; | |
1116 | } | |
1117 | case VIDIOC_G_INPUT: | |
1118 | { | |
1119 | unsigned int *i = arg; | |
1120 | ||
a399810c | 1121 | if (!ops->vidioc_g_input) |
35ea11ff | 1122 | break; |
a399810c | 1123 | ret = ops->vidioc_g_input(file, fh, i); |
35ea11ff HV |
1124 | if (!ret) |
1125 | dbgarg(cmd, "value=%d\n", *i); | |
1126 | break; | |
1127 | } | |
1128 | case VIDIOC_S_INPUT: | |
1129 | { | |
1130 | unsigned int *i = arg; | |
1131 | ||
a399810c | 1132 | if (!ops->vidioc_s_input) |
35ea11ff HV |
1133 | break; |
1134 | dbgarg(cmd, "value=%d\n", *i); | |
a399810c | 1135 | ret = ops->vidioc_s_input(file, fh, *i); |
35ea11ff HV |
1136 | break; |
1137 | } | |
1138 | ||
1139 | /* ------ output switching ---------- */ | |
1140 | case VIDIOC_ENUMOUTPUT: | |
1141 | { | |
1142 | struct v4l2_output *p = arg; | |
35ea11ff | 1143 | |
a399810c | 1144 | if (!ops->vidioc_enum_output) |
35ea11ff | 1145 | break; |
35ea11ff | 1146 | |
a399810c | 1147 | ret = ops->vidioc_enum_output(file, fh, p); |
35ea11ff HV |
1148 | if (!ret) |
1149 | dbgarg(cmd, "index=%d, name=%s, type=%d, " | |
1150 | "audioset=0x%x, " | |
1151 | "modulator=%d, std=0x%08Lx\n", | |
1152 | p->index, p->name, p->type, p->audioset, | |
1153 | p->modulator, (unsigned long long)p->std); | |
1154 | break; | |
1155 | } | |
1156 | case VIDIOC_G_OUTPUT: | |
1157 | { | |
1158 | unsigned int *i = arg; | |
1159 | ||
a399810c | 1160 | if (!ops->vidioc_g_output) |
35ea11ff | 1161 | break; |
a399810c | 1162 | ret = ops->vidioc_g_output(file, fh, i); |
35ea11ff HV |
1163 | if (!ret) |
1164 | dbgarg(cmd, "value=%d\n", *i); | |
1165 | break; | |
1166 | } | |
1167 | case VIDIOC_S_OUTPUT: | |
1168 | { | |
1169 | unsigned int *i = arg; | |
1170 | ||
a399810c | 1171 | if (!ops->vidioc_s_output) |
35ea11ff HV |
1172 | break; |
1173 | dbgarg(cmd, "value=%d\n", *i); | |
a399810c | 1174 | ret = ops->vidioc_s_output(file, fh, *i); |
35ea11ff HV |
1175 | break; |
1176 | } | |
1177 | ||
1178 | /* --- controls ---------------------------------------------- */ | |
1179 | case VIDIOC_QUERYCTRL: | |
1180 | { | |
1181 | struct v4l2_queryctrl *p = arg; | |
1182 | ||
a399810c | 1183 | if (!ops->vidioc_queryctrl) |
35ea11ff | 1184 | break; |
a399810c | 1185 | ret = ops->vidioc_queryctrl(file, fh, p); |
35ea11ff HV |
1186 | if (!ret) |
1187 | dbgarg(cmd, "id=0x%x, type=%d, name=%s, min/max=%d/%d, " | |
1188 | "step=%d, default=%d, flags=0x%08x\n", | |
1189 | p->id, p->type, p->name, | |
1190 | p->minimum, p->maximum, | |
1191 | p->step, p->default_value, p->flags); | |
1192 | else | |
1193 | dbgarg(cmd, "id=0x%x\n", p->id); | |
1194 | break; | |
1195 | } | |
1196 | case VIDIOC_G_CTRL: | |
1197 | { | |
1198 | struct v4l2_control *p = arg; | |
1199 | ||
a399810c HV |
1200 | if (ops->vidioc_g_ctrl) |
1201 | ret = ops->vidioc_g_ctrl(file, fh, p); | |
1202 | else if (ops->vidioc_g_ext_ctrls) { | |
35ea11ff HV |
1203 | struct v4l2_ext_controls ctrls; |
1204 | struct v4l2_ext_control ctrl; | |
1205 | ||
1206 | ctrls.ctrl_class = V4L2_CTRL_ID2CLASS(p->id); | |
1207 | ctrls.count = 1; | |
1208 | ctrls.controls = &ctrl; | |
1209 | ctrl.id = p->id; | |
1210 | ctrl.value = p->value; | |
1211 | if (check_ext_ctrls(&ctrls, 1)) { | |
a399810c | 1212 | ret = ops->vidioc_g_ext_ctrls(file, fh, &ctrls); |
35ea11ff HV |
1213 | if (ret == 0) |
1214 | p->value = ctrl.value; | |
1215 | } | |
1216 | } else | |
1217 | break; | |
1218 | if (!ret) | |
1219 | dbgarg(cmd, "id=0x%x, value=%d\n", p->id, p->value); | |
1220 | else | |
1221 | dbgarg(cmd, "id=0x%x\n", p->id); | |
1222 | break; | |
1223 | } | |
1224 | case VIDIOC_S_CTRL: | |
1225 | { | |
1226 | struct v4l2_control *p = arg; | |
1227 | struct v4l2_ext_controls ctrls; | |
1228 | struct v4l2_ext_control ctrl; | |
1229 | ||
a399810c | 1230 | if (!ops->vidioc_s_ctrl && !ops->vidioc_s_ext_ctrls) |
35ea11ff HV |
1231 | break; |
1232 | ||
1233 | dbgarg(cmd, "id=0x%x, value=%d\n", p->id, p->value); | |
1234 | ||
a399810c HV |
1235 | if (ops->vidioc_s_ctrl) { |
1236 | ret = ops->vidioc_s_ctrl(file, fh, p); | |
35ea11ff HV |
1237 | break; |
1238 | } | |
a399810c | 1239 | if (!ops->vidioc_s_ext_ctrls) |
35ea11ff HV |
1240 | break; |
1241 | ||
1242 | ctrls.ctrl_class = V4L2_CTRL_ID2CLASS(p->id); | |
1243 | ctrls.count = 1; | |
1244 | ctrls.controls = &ctrl; | |
1245 | ctrl.id = p->id; | |
1246 | ctrl.value = p->value; | |
1247 | if (check_ext_ctrls(&ctrls, 1)) | |
a399810c | 1248 | ret = ops->vidioc_s_ext_ctrls(file, fh, &ctrls); |
35ea11ff HV |
1249 | break; |
1250 | } | |
1251 | case VIDIOC_G_EXT_CTRLS: | |
1252 | { | |
1253 | struct v4l2_ext_controls *p = arg; | |
1254 | ||
1255 | p->error_idx = p->count; | |
a399810c | 1256 | if (!ops->vidioc_g_ext_ctrls) |
35ea11ff HV |
1257 | break; |
1258 | if (check_ext_ctrls(p, 0)) | |
a399810c | 1259 | ret = ops->vidioc_g_ext_ctrls(file, fh, p); |
35ea11ff HV |
1260 | v4l_print_ext_ctrls(cmd, vfd, p, !ret); |
1261 | break; | |
1262 | } | |
1263 | case VIDIOC_S_EXT_CTRLS: | |
1264 | { | |
1265 | struct v4l2_ext_controls *p = arg; | |
1266 | ||
1267 | p->error_idx = p->count; | |
a399810c | 1268 | if (!ops->vidioc_s_ext_ctrls) |
35ea11ff HV |
1269 | break; |
1270 | v4l_print_ext_ctrls(cmd, vfd, p, 1); | |
1271 | if (check_ext_ctrls(p, 0)) | |
a399810c | 1272 | ret = ops->vidioc_s_ext_ctrls(file, fh, p); |
35ea11ff HV |
1273 | break; |
1274 | } | |
1275 | case VIDIOC_TRY_EXT_CTRLS: | |
1276 | { | |
1277 | struct v4l2_ext_controls *p = arg; | |
1278 | ||
1279 | p->error_idx = p->count; | |
a399810c | 1280 | if (!ops->vidioc_try_ext_ctrls) |
35ea11ff HV |
1281 | break; |
1282 | v4l_print_ext_ctrls(cmd, vfd, p, 1); | |
1283 | if (check_ext_ctrls(p, 0)) | |
a399810c | 1284 | ret = ops->vidioc_try_ext_ctrls(file, fh, p); |
35ea11ff HV |
1285 | break; |
1286 | } | |
1287 | case VIDIOC_QUERYMENU: | |
1288 | { | |
1289 | struct v4l2_querymenu *p = arg; | |
1290 | ||
a399810c | 1291 | if (!ops->vidioc_querymenu) |
35ea11ff | 1292 | break; |
a399810c | 1293 | ret = ops->vidioc_querymenu(file, fh, p); |
35ea11ff HV |
1294 | if (!ret) |
1295 | dbgarg(cmd, "id=0x%x, index=%d, name=%s\n", | |
1296 | p->id, p->index, p->name); | |
1297 | else | |
1298 | dbgarg(cmd, "id=0x%x, index=%d\n", | |
1299 | p->id, p->index); | |
1300 | break; | |
1301 | } | |
1302 | /* --- audio ---------------------------------------------- */ | |
1303 | case VIDIOC_ENUMAUDIO: | |
1304 | { | |
1305 | struct v4l2_audio *p = arg; | |
1306 | ||
a399810c | 1307 | if (!ops->vidioc_enumaudio) |
35ea11ff | 1308 | break; |
a399810c | 1309 | ret = ops->vidioc_enumaudio(file, fh, p); |
35ea11ff HV |
1310 | if (!ret) |
1311 | dbgarg(cmd, "index=%d, name=%s, capability=0x%x, " | |
1312 | "mode=0x%x\n", p->index, p->name, | |
1313 | p->capability, p->mode); | |
1314 | else | |
1315 | dbgarg(cmd, "index=%d\n", p->index); | |
1316 | break; | |
1317 | } | |
1318 | case VIDIOC_G_AUDIO: | |
1319 | { | |
1320 | struct v4l2_audio *p = arg; | |
35ea11ff | 1321 | |
a399810c | 1322 | if (!ops->vidioc_g_audio) |
35ea11ff HV |
1323 | break; |
1324 | ||
a399810c | 1325 | ret = ops->vidioc_g_audio(file, fh, p); |
35ea11ff HV |
1326 | if (!ret) |
1327 | dbgarg(cmd, "index=%d, name=%s, capability=0x%x, " | |
1328 | "mode=0x%x\n", p->index, | |
1329 | p->name, p->capability, p->mode); | |
1330 | else | |
1331 | dbgarg(cmd, "index=%d\n", p->index); | |
1332 | break; | |
1333 | } | |
1334 | case VIDIOC_S_AUDIO: | |
1335 | { | |
1336 | struct v4l2_audio *p = arg; | |
1337 | ||
a399810c | 1338 | if (!ops->vidioc_s_audio) |
35ea11ff HV |
1339 | break; |
1340 | dbgarg(cmd, "index=%d, name=%s, capability=0x%x, " | |
1341 | "mode=0x%x\n", p->index, p->name, | |
1342 | p->capability, p->mode); | |
a399810c | 1343 | ret = ops->vidioc_s_audio(file, fh, p); |
35ea11ff HV |
1344 | break; |
1345 | } | |
1346 | case VIDIOC_ENUMAUDOUT: | |
1347 | { | |
1348 | struct v4l2_audioout *p = arg; | |
1349 | ||
a399810c | 1350 | if (!ops->vidioc_enumaudout) |
35ea11ff HV |
1351 | break; |
1352 | dbgarg(cmd, "Enum for index=%d\n", p->index); | |
a399810c | 1353 | ret = ops->vidioc_enumaudout(file, fh, p); |
35ea11ff HV |
1354 | if (!ret) |
1355 | dbgarg2("index=%d, name=%s, capability=%d, " | |
1356 | "mode=%d\n", p->index, p->name, | |
1357 | p->capability, p->mode); | |
1358 | break; | |
1359 | } | |
1360 | case VIDIOC_G_AUDOUT: | |
1361 | { | |
1362 | struct v4l2_audioout *p = arg; | |
1363 | ||
a399810c | 1364 | if (!ops->vidioc_g_audout) |
35ea11ff | 1365 | break; |
337f9d20 | 1366 | |
a399810c | 1367 | ret = ops->vidioc_g_audout(file, fh, p); |
35ea11ff HV |
1368 | if (!ret) |
1369 | dbgarg2("index=%d, name=%s, capability=%d, " | |
1370 | "mode=%d\n", p->index, p->name, | |
1371 | p->capability, p->mode); | |
1372 | break; | |
1373 | } | |
1374 | case VIDIOC_S_AUDOUT: | |
1375 | { | |
1376 | struct v4l2_audioout *p = arg; | |
1377 | ||
a399810c | 1378 | if (!ops->vidioc_s_audout) |
35ea11ff HV |
1379 | break; |
1380 | dbgarg(cmd, "index=%d, name=%s, capability=%d, " | |
1381 | "mode=%d\n", p->index, p->name, | |
1382 | p->capability, p->mode); | |
1383 | ||
a399810c | 1384 | ret = ops->vidioc_s_audout(file, fh, p); |
35ea11ff HV |
1385 | break; |
1386 | } | |
1387 | case VIDIOC_G_MODULATOR: | |
1388 | { | |
1389 | struct v4l2_modulator *p = arg; | |
1390 | ||
a399810c | 1391 | if (!ops->vidioc_g_modulator) |
35ea11ff | 1392 | break; |
a399810c | 1393 | ret = ops->vidioc_g_modulator(file, fh, p); |
35ea11ff HV |
1394 | if (!ret) |
1395 | dbgarg(cmd, "index=%d, name=%s, " | |
1396 | "capability=%d, rangelow=%d," | |
1397 | " rangehigh=%d, txsubchans=%d\n", | |
1398 | p->index, p->name, p->capability, | |
1399 | p->rangelow, p->rangehigh, | |
1400 | p->txsubchans); | |
1401 | break; | |
1402 | } | |
1403 | case VIDIOC_S_MODULATOR: | |
1404 | { | |
1405 | struct v4l2_modulator *p = arg; | |
1406 | ||
a399810c | 1407 | if (!ops->vidioc_s_modulator) |
35ea11ff HV |
1408 | break; |
1409 | dbgarg(cmd, "index=%d, name=%s, capability=%d, " | |
1410 | "rangelow=%d, rangehigh=%d, txsubchans=%d\n", | |
1411 | p->index, p->name, p->capability, p->rangelow, | |
1412 | p->rangehigh, p->txsubchans); | |
a399810c | 1413 | ret = ops->vidioc_s_modulator(file, fh, p); |
35ea11ff HV |
1414 | break; |
1415 | } | |
1416 | case VIDIOC_G_CROP: | |
1417 | { | |
1418 | struct v4l2_crop *p = arg; | |
1419 | ||
a399810c | 1420 | if (!ops->vidioc_g_crop) |
35ea11ff | 1421 | break; |
a56a18c3 | 1422 | |
35ea11ff | 1423 | dbgarg(cmd, "type=%s\n", prt_names(p->type, v4l2_type_names)); |
a399810c | 1424 | ret = ops->vidioc_g_crop(file, fh, p); |
35ea11ff HV |
1425 | if (!ret) |
1426 | dbgrect(vfd, "", &p->c); | |
1427 | break; | |
1428 | } | |
1429 | case VIDIOC_S_CROP: | |
1430 | { | |
1431 | struct v4l2_crop *p = arg; | |
1432 | ||
a399810c | 1433 | if (!ops->vidioc_s_crop) |
35ea11ff HV |
1434 | break; |
1435 | dbgarg(cmd, "type=%s\n", prt_names(p->type, v4l2_type_names)); | |
1436 | dbgrect(vfd, "", &p->c); | |
a399810c | 1437 | ret = ops->vidioc_s_crop(file, fh, p); |
35ea11ff HV |
1438 | break; |
1439 | } | |
1440 | case VIDIOC_CROPCAP: | |
1441 | { | |
1442 | struct v4l2_cropcap *p = arg; | |
1443 | ||
1444 | /*FIXME: Should also show v4l2_fract pixelaspect */ | |
a399810c | 1445 | if (!ops->vidioc_cropcap) |
35ea11ff | 1446 | break; |
a56a18c3 | 1447 | |
35ea11ff | 1448 | dbgarg(cmd, "type=%s\n", prt_names(p->type, v4l2_type_names)); |
a399810c | 1449 | ret = ops->vidioc_cropcap(file, fh, p); |
35ea11ff HV |
1450 | if (!ret) { |
1451 | dbgrect(vfd, "bounds ", &p->bounds); | |
1452 | dbgrect(vfd, "defrect ", &p->defrect); | |
1453 | } | |
1454 | break; | |
1455 | } | |
1456 | case VIDIOC_G_JPEGCOMP: | |
1457 | { | |
1458 | struct v4l2_jpegcompression *p = arg; | |
1459 | ||
a399810c | 1460 | if (!ops->vidioc_g_jpegcomp) |
35ea11ff | 1461 | break; |
a56a18c3 | 1462 | |
a399810c | 1463 | ret = ops->vidioc_g_jpegcomp(file, fh, p); |
35ea11ff HV |
1464 | if (!ret) |
1465 | dbgarg(cmd, "quality=%d, APPn=%d, " | |
1466 | "APP_len=%d, COM_len=%d, " | |
1467 | "jpeg_markers=%d\n", | |
1468 | p->quality, p->APPn, p->APP_len, | |
1469 | p->COM_len, p->jpeg_markers); | |
1470 | break; | |
1471 | } | |
1472 | case VIDIOC_S_JPEGCOMP: | |
1473 | { | |
1474 | struct v4l2_jpegcompression *p = arg; | |
1475 | ||
a399810c | 1476 | if (!ops->vidioc_g_jpegcomp) |
35ea11ff HV |
1477 | break; |
1478 | dbgarg(cmd, "quality=%d, APPn=%d, APP_len=%d, " | |
1479 | "COM_len=%d, jpeg_markers=%d\n", | |
1480 | p->quality, p->APPn, p->APP_len, | |
1481 | p->COM_len, p->jpeg_markers); | |
a399810c | 1482 | ret = ops->vidioc_s_jpegcomp(file, fh, p); |
35ea11ff HV |
1483 | break; |
1484 | } | |
1485 | case VIDIOC_G_ENC_INDEX: | |
1486 | { | |
1487 | struct v4l2_enc_idx *p = arg; | |
1488 | ||
a399810c | 1489 | if (!ops->vidioc_g_enc_index) |
35ea11ff | 1490 | break; |
a399810c | 1491 | ret = ops->vidioc_g_enc_index(file, fh, p); |
35ea11ff HV |
1492 | if (!ret) |
1493 | dbgarg(cmd, "entries=%d, entries_cap=%d\n", | |
1494 | p->entries, p->entries_cap); | |
1495 | break; | |
1496 | } | |
1497 | case VIDIOC_ENCODER_CMD: | |
1498 | { | |
1499 | struct v4l2_encoder_cmd *p = arg; | |
1500 | ||
a399810c | 1501 | if (!ops->vidioc_encoder_cmd) |
35ea11ff | 1502 | break; |
a399810c | 1503 | ret = ops->vidioc_encoder_cmd(file, fh, p); |
35ea11ff HV |
1504 | if (!ret) |
1505 | dbgarg(cmd, "cmd=%d, flags=%x\n", p->cmd, p->flags); | |
1506 | break; | |
1507 | } | |
1508 | case VIDIOC_TRY_ENCODER_CMD: | |
1509 | { | |
1510 | struct v4l2_encoder_cmd *p = arg; | |
1511 | ||
a399810c | 1512 | if (!ops->vidioc_try_encoder_cmd) |
35ea11ff | 1513 | break; |
a399810c | 1514 | ret = ops->vidioc_try_encoder_cmd(file, fh, p); |
35ea11ff HV |
1515 | if (!ret) |
1516 | dbgarg(cmd, "cmd=%d, flags=%x\n", p->cmd, p->flags); | |
1517 | break; | |
1518 | } | |
1519 | case VIDIOC_G_PARM: | |
1520 | { | |
1521 | struct v4l2_streamparm *p = arg; | |
35ea11ff | 1522 | |
a399810c | 1523 | if (ops->vidioc_g_parm) { |
34796bc0 TP |
1524 | ret = check_fmt(ops, p->type); |
1525 | if (ret) | |
1526 | break; | |
a399810c | 1527 | ret = ops->vidioc_g_parm(file, fh, p); |
35ea11ff | 1528 | } else { |
35ea11ff HV |
1529 | if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
1530 | return -EINVAL; | |
1531 | ||
51f0b8d5 TP |
1532 | v4l2_video_std_frame_period(vfd->current_norm, |
1533 | &p->parm.capture.timeperframe); | |
35ea11ff HV |
1534 | ret = 0; |
1535 | } | |
1536 | ||
1537 | dbgarg(cmd, "type=%d\n", p->type); | |
1538 | break; | |
1539 | } | |
1540 | case VIDIOC_S_PARM: | |
1541 | { | |
1542 | struct v4l2_streamparm *p = arg; | |
1543 | ||
a399810c | 1544 | if (!ops->vidioc_s_parm) |
35ea11ff | 1545 | break; |
34796bc0 TP |
1546 | ret = check_fmt(ops, p->type); |
1547 | if (ret) | |
1548 | break; | |
1549 | ||
35ea11ff | 1550 | dbgarg(cmd, "type=%d\n", p->type); |
a399810c | 1551 | ret = ops->vidioc_s_parm(file, fh, p); |
35ea11ff HV |
1552 | break; |
1553 | } | |
1554 | case VIDIOC_G_TUNER: | |
1555 | { | |
1556 | struct v4l2_tuner *p = arg; | |
35ea11ff | 1557 | |
a399810c | 1558 | if (!ops->vidioc_g_tuner) |
35ea11ff HV |
1559 | break; |
1560 | ||
a399810c | 1561 | ret = ops->vidioc_g_tuner(file, fh, p); |
35ea11ff HV |
1562 | if (!ret) |
1563 | dbgarg(cmd, "index=%d, name=%s, type=%d, " | |
1564 | "capability=0x%x, rangelow=%d, " | |
1565 | "rangehigh=%d, signal=%d, afc=%d, " | |
1566 | "rxsubchans=0x%x, audmode=%d\n", | |
1567 | p->index, p->name, p->type, | |
1568 | p->capability, p->rangelow, | |
1569 | p->rangehigh, p->signal, p->afc, | |
1570 | p->rxsubchans, p->audmode); | |
1571 | break; | |
1572 | } | |
1573 | case VIDIOC_S_TUNER: | |
1574 | { | |
1575 | struct v4l2_tuner *p = arg; | |
1576 | ||
a399810c | 1577 | if (!ops->vidioc_s_tuner) |
35ea11ff HV |
1578 | break; |
1579 | dbgarg(cmd, "index=%d, name=%s, type=%d, " | |
1580 | "capability=0x%x, rangelow=%d, " | |
1581 | "rangehigh=%d, signal=%d, afc=%d, " | |
1582 | "rxsubchans=0x%x, audmode=%d\n", | |
1583 | p->index, p->name, p->type, | |
1584 | p->capability, p->rangelow, | |
1585 | p->rangehigh, p->signal, p->afc, | |
1586 | p->rxsubchans, p->audmode); | |
a399810c | 1587 | ret = ops->vidioc_s_tuner(file, fh, p); |
35ea11ff HV |
1588 | break; |
1589 | } | |
1590 | case VIDIOC_G_FREQUENCY: | |
1591 | { | |
1592 | struct v4l2_frequency *p = arg; | |
1593 | ||
a399810c | 1594 | if (!ops->vidioc_g_frequency) |
35ea11ff HV |
1595 | break; |
1596 | ||
a399810c | 1597 | ret = ops->vidioc_g_frequency(file, fh, p); |
35ea11ff HV |
1598 | if (!ret) |
1599 | dbgarg(cmd, "tuner=%d, type=%d, frequency=%d\n", | |
1600 | p->tuner, p->type, p->frequency); | |
1601 | break; | |
1602 | } | |
1603 | case VIDIOC_S_FREQUENCY: | |
1604 | { | |
1605 | struct v4l2_frequency *p = arg; | |
1606 | ||
a399810c | 1607 | if (!ops->vidioc_s_frequency) |
35ea11ff HV |
1608 | break; |
1609 | dbgarg(cmd, "tuner=%d, type=%d, frequency=%d\n", | |
1610 | p->tuner, p->type, p->frequency); | |
a399810c | 1611 | ret = ops->vidioc_s_frequency(file, fh, p); |
35ea11ff HV |
1612 | break; |
1613 | } | |
1614 | case VIDIOC_G_SLICED_VBI_CAP: | |
1615 | { | |
1616 | struct v4l2_sliced_vbi_cap *p = arg; | |
35ea11ff | 1617 | |
a399810c | 1618 | if (!ops->vidioc_g_sliced_vbi_cap) |
35ea11ff | 1619 | break; |
19c96e4b TP |
1620 | |
1621 | /* Clear up to type, everything after type is zerod already */ | |
1622 | memset(p, 0, offsetof(struct v4l2_sliced_vbi_cap, type)); | |
1623 | ||
35ea11ff | 1624 | dbgarg(cmd, "type=%s\n", prt_names(p->type, v4l2_type_names)); |
a399810c | 1625 | ret = ops->vidioc_g_sliced_vbi_cap(file, fh, p); |
35ea11ff HV |
1626 | if (!ret) |
1627 | dbgarg2("service_set=%d\n", p->service_set); | |
1628 | break; | |
1629 | } | |
1630 | case VIDIOC_LOG_STATUS: | |
1631 | { | |
a399810c | 1632 | if (!ops->vidioc_log_status) |
35ea11ff | 1633 | break; |
a399810c | 1634 | ret = ops->vidioc_log_status(file, fh); |
35ea11ff HV |
1635 | break; |
1636 | } | |
1637 | #ifdef CONFIG_VIDEO_ADV_DEBUG | |
1638 | case VIDIOC_DBG_G_REGISTER: | |
1639 | { | |
aecde8b5 | 1640 | struct v4l2_dbg_register *p = arg; |
35ea11ff HV |
1641 | |
1642 | if (!capable(CAP_SYS_ADMIN)) | |
1643 | ret = -EPERM; | |
a399810c HV |
1644 | else if (ops->vidioc_g_register) |
1645 | ret = ops->vidioc_g_register(file, fh, p); | |
35ea11ff HV |
1646 | break; |
1647 | } | |
1648 | case VIDIOC_DBG_S_REGISTER: | |
1649 | { | |
aecde8b5 | 1650 | struct v4l2_dbg_register *p = arg; |
35ea11ff HV |
1651 | |
1652 | if (!capable(CAP_SYS_ADMIN)) | |
1653 | ret = -EPERM; | |
a399810c HV |
1654 | else if (ops->vidioc_s_register) |
1655 | ret = ops->vidioc_s_register(file, fh, p); | |
35ea11ff HV |
1656 | break; |
1657 | } | |
1658 | #endif | |
aecde8b5 | 1659 | case VIDIOC_DBG_G_CHIP_IDENT: |
35ea11ff | 1660 | { |
aecde8b5 | 1661 | struct v4l2_dbg_chip_ident *p = arg; |
35ea11ff | 1662 | |
a399810c | 1663 | if (!ops->vidioc_g_chip_ident) |
35ea11ff | 1664 | break; |
80b36e0f HV |
1665 | p->ident = V4L2_IDENT_NONE; |
1666 | p->revision = 0; | |
a399810c | 1667 | ret = ops->vidioc_g_chip_ident(file, fh, p); |
35ea11ff HV |
1668 | if (!ret) |
1669 | dbgarg(cmd, "chip_ident=%u, revision=0x%x\n", p->ident, p->revision); | |
1670 | break; | |
1671 | } | |
35ea11ff HV |
1672 | case VIDIOC_S_HW_FREQ_SEEK: |
1673 | { | |
1674 | struct v4l2_hw_freq_seek *p = arg; | |
1675 | ||
a399810c | 1676 | if (!ops->vidioc_s_hw_freq_seek) |
35ea11ff HV |
1677 | break; |
1678 | dbgarg(cmd, | |
1679 | "tuner=%d, type=%d, seek_upward=%d, wrap_around=%d\n", | |
1680 | p->tuner, p->type, p->seek_upward, p->wrap_around); | |
a399810c HV |
1681 | ret = ops->vidioc_s_hw_freq_seek(file, fh, p); |
1682 | break; | |
1683 | } | |
74d83fa0 MCC |
1684 | case VIDIOC_ENUM_FRAMESIZES: |
1685 | { | |
1686 | struct v4l2_frmsizeenum *p = arg; | |
1687 | ||
1688 | if (!ops->vidioc_enum_framesizes) | |
1689 | break; | |
1690 | ||
74d83fa0 MCC |
1691 | ret = ops->vidioc_enum_framesizes(file, fh, p); |
1692 | dbgarg(cmd, | |
1693 | "index=%d, pixelformat=%d, type=%d ", | |
1694 | p->index, p->pixel_format, p->type); | |
1695 | switch (p->type) { | |
1696 | case V4L2_FRMSIZE_TYPE_DISCRETE: | |
1697 | dbgarg2("width = %d, height=%d\n", | |
1698 | p->discrete.width, p->discrete.height); | |
1699 | break; | |
1700 | case V4L2_FRMSIZE_TYPE_STEPWISE: | |
1701 | dbgarg2("min %dx%d, max %dx%d, step %dx%d\n", | |
1702 | p->stepwise.min_width, p->stepwise.min_height, | |
1703 | p->stepwise.step_width, p->stepwise.step_height, | |
1704 | p->stepwise.max_width, p->stepwise.max_height); | |
1705 | break; | |
1706 | case V4L2_FRMSIZE_TYPE_CONTINUOUS: | |
1707 | dbgarg2("continuous\n"); | |
1708 | break; | |
1709 | default: | |
1710 | dbgarg2("- Unknown type!\n"); | |
1711 | } | |
1712 | ||
1713 | break; | |
1714 | } | |
1715 | case VIDIOC_ENUM_FRAMEINTERVALS: | |
1716 | { | |
1717 | struct v4l2_frmivalenum *p = arg; | |
1718 | ||
1719 | if (!ops->vidioc_enum_frameintervals) | |
1720 | break; | |
1721 | ||
74d83fa0 MCC |
1722 | ret = ops->vidioc_enum_frameintervals(file, fh, p); |
1723 | dbgarg(cmd, | |
1724 | "index=%d, pixelformat=%d, width=%d, height=%d, type=%d ", | |
1725 | p->index, p->pixel_format, | |
1726 | p->width, p->height, p->type); | |
1727 | switch (p->type) { | |
1728 | case V4L2_FRMIVAL_TYPE_DISCRETE: | |
1729 | dbgarg2("fps=%d/%d\n", | |
1730 | p->discrete.numerator, | |
1731 | p->discrete.denominator); | |
1732 | break; | |
1733 | case V4L2_FRMIVAL_TYPE_STEPWISE: | |
1958578d MCC |
1734 | dbgarg2("min=%d/%d, max=%d/%d, step=%d/%d\n", |
1735 | p->stepwise.min.numerator, | |
1736 | p->stepwise.min.denominator, | |
1737 | p->stepwise.max.numerator, | |
1738 | p->stepwise.max.denominator, | |
1739 | p->stepwise.step.numerator, | |
1740 | p->stepwise.step.denominator); | |
74d83fa0 MCC |
1741 | break; |
1742 | case V4L2_FRMIVAL_TYPE_CONTINUOUS: | |
1743 | dbgarg2("continuous\n"); | |
1744 | break; | |
1745 | default: | |
1746 | dbgarg2("- Unknown type!\n"); | |
1747 | } | |
1748 | break; | |
1749 | } | |
1750 | ||
a399810c HV |
1751 | default: |
1752 | { | |
1753 | if (!ops->vidioc_default) | |
1754 | break; | |
1755 | ret = ops->vidioc_default(file, fh, cmd, arg); | |
35ea11ff HV |
1756 | break; |
1757 | } | |
1758 | } /* switch */ | |
1759 | ||
1760 | if (vfd->debug & V4L2_DEBUG_IOCTL_ARG) { | |
1761 | if (ret < 0) { | |
1762 | v4l_print_ioctl(vfd->name, cmd); | |
069b7479 | 1763 | printk(KERN_CONT " error %ld\n", ret); |
35ea11ff HV |
1764 | } |
1765 | } | |
1766 | ||
1767 | return ret; | |
1768 | } | |
1769 | ||
19c96e4b TP |
1770 | /* In some cases, only a few fields are used as input, i.e. when the app sets |
1771 | * "index" and then the driver fills in the rest of the structure for the thing | |
1772 | * with that index. We only need to copy up the first non-input field. */ | |
1773 | static unsigned long cmd_input_size(unsigned int cmd) | |
1774 | { | |
1775 | /* Size of structure up to and including 'field' */ | |
9f1a693f HV |
1776 | #define CMDINSIZE(cmd, type, field) \ |
1777 | case VIDIOC_##cmd: \ | |
1778 | return offsetof(struct v4l2_##type, field) + \ | |
1779 | sizeof(((struct v4l2_##type *)0)->field); | |
19c96e4b | 1780 | |
9f1a693f | 1781 | switch (cmd) { |
19c96e4b TP |
1782 | CMDINSIZE(ENUM_FMT, fmtdesc, type); |
1783 | CMDINSIZE(G_FMT, format, type); | |
1784 | CMDINSIZE(QUERYBUF, buffer, type); | |
1785 | CMDINSIZE(G_PARM, streamparm, type); | |
1786 | CMDINSIZE(ENUMSTD, standard, index); | |
1787 | CMDINSIZE(ENUMINPUT, input, index); | |
1788 | CMDINSIZE(G_CTRL, control, id); | |
1789 | CMDINSIZE(G_TUNER, tuner, index); | |
1790 | CMDINSIZE(QUERYCTRL, queryctrl, id); | |
1791 | CMDINSIZE(QUERYMENU, querymenu, index); | |
1792 | CMDINSIZE(ENUMOUTPUT, output, index); | |
1793 | CMDINSIZE(G_MODULATOR, modulator, index); | |
1794 | CMDINSIZE(G_FREQUENCY, frequency, tuner); | |
1795 | CMDINSIZE(CROPCAP, cropcap, type); | |
1796 | CMDINSIZE(G_CROP, crop, type); | |
1797 | CMDINSIZE(ENUMAUDIO, audio, index); | |
1798 | CMDINSIZE(ENUMAUDOUT, audioout, index); | |
1799 | CMDINSIZE(ENCODER_CMD, encoder_cmd, flags); | |
1800 | CMDINSIZE(TRY_ENCODER_CMD, encoder_cmd, flags); | |
1801 | CMDINSIZE(G_SLICED_VBI_CAP, sliced_vbi_cap, type); | |
1802 | CMDINSIZE(ENUM_FRAMESIZES, frmsizeenum, pixel_format); | |
1803 | CMDINSIZE(ENUM_FRAMEINTERVALS, frmivalenum, height); | |
1804 | default: | |
1805 | return _IOC_SIZE(cmd); | |
1806 | } | |
1807 | } | |
1808 | ||
069b7479 | 1809 | long video_ioctl2(struct file *file, |
35ea11ff HV |
1810 | unsigned int cmd, unsigned long arg) |
1811 | { | |
1812 | char sbuf[128]; | |
1813 | void *mbuf = NULL; | |
1814 | void *parg = NULL; | |
069b7479 | 1815 | long err = -EINVAL; |
35ea11ff HV |
1816 | int is_ext_ctrl; |
1817 | size_t ctrls_size = 0; | |
1818 | void __user *user_ptr = NULL; | |
1819 | ||
1820 | #ifdef __OLD_VIDIOC_ | |
1821 | cmd = video_fix_command(cmd); | |
1822 | #endif | |
1823 | is_ext_ctrl = (cmd == VIDIOC_S_EXT_CTRLS || cmd == VIDIOC_G_EXT_CTRLS || | |
1824 | cmd == VIDIOC_TRY_EXT_CTRLS); | |
1825 | ||
1826 | /* Copy arguments into temp kernel buffer */ | |
337f9d20 | 1827 | if (_IOC_DIR(cmd) != _IOC_NONE) { |
35ea11ff HV |
1828 | if (_IOC_SIZE(cmd) <= sizeof(sbuf)) { |
1829 | parg = sbuf; | |
1830 | } else { | |
1831 | /* too big to allocate from stack */ | |
1832 | mbuf = kmalloc(_IOC_SIZE(cmd), GFP_KERNEL); | |
1833 | if (NULL == mbuf) | |
1834 | return -ENOMEM; | |
1835 | parg = mbuf; | |
1836 | } | |
1837 | ||
1838 | err = -EFAULT; | |
19c96e4b TP |
1839 | if (_IOC_DIR(cmd) & _IOC_WRITE) { |
1840 | unsigned long n = cmd_input_size(cmd); | |
1841 | ||
1842 | if (copy_from_user(parg, (void __user *)arg, n)) | |
35ea11ff | 1843 | goto out; |
19c96e4b TP |
1844 | |
1845 | /* zero out anything we don't copy from userspace */ | |
1846 | if (n < _IOC_SIZE(cmd)) | |
1847 | memset((u8 *)parg + n, 0, _IOC_SIZE(cmd) - n); | |
337f9d20 TP |
1848 | } else { |
1849 | /* read-only ioctl */ | |
1850 | memset(parg, 0, _IOC_SIZE(cmd)); | |
19c96e4b | 1851 | } |
35ea11ff HV |
1852 | } |
1853 | ||
1854 | if (is_ext_ctrl) { | |
1855 | struct v4l2_ext_controls *p = parg; | |
1856 | ||
1857 | /* In case of an error, tell the caller that it wasn't | |
1858 | a specific control that caused it. */ | |
1859 | p->error_idx = p->count; | |
1860 | user_ptr = (void __user *)p->controls; | |
1861 | if (p->count) { | |
1862 | ctrls_size = sizeof(struct v4l2_ext_control) * p->count; | |
1863 | /* Note: v4l2_ext_controls fits in sbuf[] so mbuf is still NULL. */ | |
1864 | mbuf = kmalloc(ctrls_size, GFP_KERNEL); | |
1865 | err = -ENOMEM; | |
1866 | if (NULL == mbuf) | |
1867 | goto out_ext_ctrl; | |
1868 | err = -EFAULT; | |
1869 | if (copy_from_user(mbuf, user_ptr, ctrls_size)) | |
1870 | goto out_ext_ctrl; | |
1871 | p->controls = mbuf; | |
1872 | } | |
1873 | } | |
1874 | ||
1875 | /* Handles IOCTL */ | |
b1f88407 | 1876 | err = __video_do_ioctl(file, cmd, parg); |
35ea11ff HV |
1877 | if (err == -ENOIOCTLCMD) |
1878 | err = -EINVAL; | |
1879 | if (is_ext_ctrl) { | |
1880 | struct v4l2_ext_controls *p = parg; | |
1881 | ||
1882 | p->controls = (void *)user_ptr; | |
1883 | if (p->count && err == 0 && copy_to_user(user_ptr, mbuf, ctrls_size)) | |
1884 | err = -EFAULT; | |
1885 | goto out_ext_ctrl; | |
1886 | } | |
1887 | if (err < 0) | |
1888 | goto out; | |
1889 | ||
1890 | out_ext_ctrl: | |
1891 | /* Copy results into user buffer */ | |
1892 | switch (_IOC_DIR(cmd)) { | |
1893 | case _IOC_READ: | |
1894 | case (_IOC_WRITE | _IOC_READ): | |
1895 | if (copy_to_user((void __user *)arg, parg, _IOC_SIZE(cmd))) | |
1896 | err = -EFAULT; | |
1897 | break; | |
1898 | } | |
1899 | ||
1900 | out: | |
1901 | kfree(mbuf); | |
1902 | return err; | |
1903 | } | |
8a522c91 | 1904 | EXPORT_SYMBOL(video_ioctl2); |