Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * 32bit -> 64bit ioctl wrapper for PCM API |
| 3 | * Copyright (c) by Takashi Iwai <tiwai@suse.de> |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License as published by |
| 7 | * the Free Software Foundation; either version 2 of the License, or |
| 8 | * (at your option) any later version. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License |
| 16 | * along with this program; if not, write to the Free Software |
| 17 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 18 | * |
| 19 | */ |
| 20 | |
| 21 | /* This file included from pcm_native.c */ |
| 22 | |
| 23 | #include <linux/compat.h> |
| 24 | |
| 25 | static int snd_pcm_ioctl_delay_compat(snd_pcm_substream_t *substream, |
| 26 | s32 __user *src) |
| 27 | { |
| 28 | snd_pcm_sframes_t delay; |
| 29 | mm_segment_t fs; |
| 30 | int err; |
| 31 | |
| 32 | fs = snd_enter_user(); |
| 33 | err = snd_pcm_delay(substream, &delay); |
| 34 | snd_leave_user(fs); |
| 35 | if (err < 0) |
| 36 | return err; |
| 37 | if (put_user(delay, src)) |
| 38 | return -EFAULT; |
| 39 | return err; |
| 40 | } |
| 41 | |
| 42 | static int snd_pcm_ioctl_rewind_compat(snd_pcm_substream_t *substream, |
| 43 | u32 __user *src) |
| 44 | { |
| 45 | snd_pcm_uframes_t frames; |
| 46 | int err; |
| 47 | |
| 48 | if (get_user(frames, src)) |
| 49 | return -EFAULT; |
| 50 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
| 51 | err = snd_pcm_playback_rewind(substream, frames); |
| 52 | else |
| 53 | err = snd_pcm_capture_rewind(substream, frames); |
| 54 | if (put_user(err, src)) |
| 55 | return -EFAULT; |
| 56 | return err < 0 ? err : 0; |
| 57 | } |
| 58 | |
| 59 | static int snd_pcm_ioctl_forward_compat(snd_pcm_substream_t *substream, |
| 60 | u32 __user *src) |
| 61 | { |
| 62 | snd_pcm_uframes_t frames; |
| 63 | int err; |
| 64 | |
| 65 | if (get_user(frames, src)) |
| 66 | return -EFAULT; |
| 67 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
| 68 | err = snd_pcm_playback_forward(substream, frames); |
| 69 | else |
| 70 | err = snd_pcm_capture_forward(substream, frames); |
| 71 | if (put_user(err, src)) |
| 72 | return -EFAULT; |
| 73 | return err < 0 ? err : 0; |
| 74 | } |
| 75 | |
| 76 | struct sndrv_pcm_hw_params32 { |
| 77 | u32 flags; |
| 78 | struct sndrv_mask masks[SNDRV_PCM_HW_PARAM_LAST_MASK - SNDRV_PCM_HW_PARAM_FIRST_MASK + 1]; /* this must be identical */ |
| 79 | struct sndrv_mask mres[5]; /* reserved masks */ |
| 80 | struct sndrv_interval intervals[SNDRV_PCM_HW_PARAM_LAST_INTERVAL - SNDRV_PCM_HW_PARAM_FIRST_INTERVAL + 1]; |
| 81 | struct sndrv_interval ires[9]; /* reserved intervals */ |
| 82 | u32 rmask; |
| 83 | u32 cmask; |
| 84 | u32 info; |
| 85 | u32 msbits; |
| 86 | u32 rate_num; |
| 87 | u32 rate_den; |
| 88 | u32 fifo_size; |
| 89 | unsigned char reserved[64]; |
| 90 | }; |
| 91 | |
| 92 | struct sndrv_pcm_sw_params32 { |
| 93 | s32 tstamp_mode; |
| 94 | u32 period_step; |
| 95 | u32 sleep_min; |
| 96 | u32 avail_min; |
| 97 | u32 xfer_align; |
| 98 | u32 start_threshold; |
| 99 | u32 stop_threshold; |
| 100 | u32 silence_threshold; |
| 101 | u32 silence_size; |
| 102 | u32 boundary; |
| 103 | unsigned char reserved[64]; |
| 104 | }; |
| 105 | |
Takashi Iwai | b271131 | 2005-08-15 15:01:10 +0200 | [diff] [blame] | 106 | /* recalcuate the boundary within 32bit */ |
| 107 | static snd_pcm_uframes_t recalculate_boundary(snd_pcm_runtime_t *runtime) |
| 108 | { |
| 109 | snd_pcm_uframes_t boundary; |
| 110 | |
| 111 | if (! runtime->buffer_size) |
| 112 | return 0; |
| 113 | boundary = runtime->buffer_size; |
| 114 | while (boundary * 2 <= 0x7fffffffUL - runtime->buffer_size) |
| 115 | boundary *= 2; |
| 116 | return boundary; |
| 117 | } |
| 118 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 119 | static int snd_pcm_ioctl_sw_params_compat(snd_pcm_substream_t *substream, |
| 120 | struct sndrv_pcm_sw_params32 __user *src) |
| 121 | { |
| 122 | snd_pcm_sw_params_t params; |
Takashi Iwai | b271131 | 2005-08-15 15:01:10 +0200 | [diff] [blame] | 123 | snd_pcm_uframes_t boundary; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 124 | int err; |
| 125 | |
| 126 | memset(¶ms, 0, sizeof(params)); |
| 127 | if (get_user(params.tstamp_mode, &src->tstamp_mode) || |
| 128 | get_user(params.period_step, &src->period_step) || |
| 129 | get_user(params.sleep_min, &src->sleep_min) || |
| 130 | get_user(params.avail_min, &src->avail_min) || |
| 131 | get_user(params.xfer_align, &src->xfer_align) || |
| 132 | get_user(params.start_threshold, &src->start_threshold) || |
| 133 | get_user(params.stop_threshold, &src->stop_threshold) || |
| 134 | get_user(params.silence_threshold, &src->silence_threshold) || |
| 135 | get_user(params.silence_size, &src->silence_size)) |
| 136 | return -EFAULT; |
Takashi Iwai | b271131 | 2005-08-15 15:01:10 +0200 | [diff] [blame] | 137 | /* |
| 138 | * Check silent_size parameter. Since we have 64bit boundary, |
| 139 | * silence_size must be compared with the 32bit boundary. |
| 140 | */ |
| 141 | boundary = recalculate_boundary(substream->runtime); |
| 142 | if (boundary && params.silence_size >= boundary) |
| 143 | params.silence_size = substream->runtime->boundary; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 144 | err = snd_pcm_sw_params(substream, ¶ms); |
| 145 | if (err < 0) |
| 146 | return err; |
Takashi Iwai | 7153a55 | 2005-08-25 19:51:47 +0200 | [diff] [blame] | 147 | if (boundary && put_user(boundary, &src->boundary)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 148 | return -EFAULT; |
| 149 | return err; |
| 150 | } |
| 151 | |
| 152 | struct sndrv_pcm_channel_info32 { |
| 153 | u32 channel; |
| 154 | u32 offset; |
| 155 | u32 first; |
| 156 | u32 step; |
| 157 | }; |
| 158 | |
| 159 | static int snd_pcm_ioctl_channel_info_compat(snd_pcm_substream_t *substream, |
| 160 | struct sndrv_pcm_channel_info32 __user *src) |
| 161 | { |
| 162 | snd_pcm_channel_info_t info; |
| 163 | int err; |
| 164 | |
| 165 | if (get_user(info.channel, &src->channel) || |
| 166 | get_user(info.offset, &src->offset) || |
| 167 | get_user(info.first, &src->first) || |
| 168 | get_user(info.step, &src->step)) |
| 169 | return -EFAULT; |
| 170 | err = snd_pcm_channel_info(substream, &info); |
| 171 | if (err < 0) |
| 172 | return err; |
| 173 | if (put_user(info.channel, &src->channel) || |
| 174 | put_user(info.offset, &src->offset) || |
| 175 | put_user(info.first, &src->first) || |
| 176 | put_user(info.step, &src->step)) |
| 177 | return -EFAULT; |
| 178 | return err; |
| 179 | } |
| 180 | |
| 181 | struct sndrv_pcm_status32 { |
| 182 | s32 state; |
| 183 | struct compat_timespec trigger_tstamp; |
| 184 | struct compat_timespec tstamp; |
| 185 | u32 appl_ptr; |
| 186 | u32 hw_ptr; |
| 187 | s32 delay; |
| 188 | u32 avail; |
| 189 | u32 avail_max; |
| 190 | u32 overrange; |
| 191 | s32 suspended_state; |
| 192 | unsigned char reserved[60]; |
| 193 | } __attribute__((packed)); |
| 194 | |
| 195 | |
| 196 | static int snd_pcm_status_user_compat(snd_pcm_substream_t *substream, |
| 197 | struct sndrv_pcm_status32 __user *src) |
| 198 | { |
| 199 | snd_pcm_status_t status; |
| 200 | int err; |
| 201 | |
| 202 | err = snd_pcm_status(substream, &status); |
| 203 | if (err < 0) |
| 204 | return err; |
| 205 | |
| 206 | if (put_user(status.state, &src->state) || |
| 207 | put_user(status.trigger_tstamp.tv_sec, &src->trigger_tstamp.tv_sec) || |
| 208 | put_user(status.trigger_tstamp.tv_nsec, &src->trigger_tstamp.tv_nsec) || |
| 209 | put_user(status.tstamp.tv_sec, &src->tstamp.tv_sec) || |
| 210 | put_user(status.tstamp.tv_nsec, &src->tstamp.tv_nsec) || |
| 211 | put_user(status.appl_ptr, &src->appl_ptr) || |
| 212 | put_user(status.hw_ptr, &src->hw_ptr) || |
| 213 | put_user(status.delay, &src->delay) || |
| 214 | put_user(status.avail, &src->avail) || |
| 215 | put_user(status.avail_max, &src->avail_max) || |
| 216 | put_user(status.overrange, &src->overrange) || |
| 217 | put_user(status.suspended_state, &src->suspended_state)) |
| 218 | return -EFAULT; |
| 219 | |
| 220 | return err; |
| 221 | } |
| 222 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 223 | /* both for HW_PARAMS and HW_REFINE */ |
| 224 | static int snd_pcm_ioctl_hw_params_compat(snd_pcm_substream_t *substream, |
| 225 | int refine, |
| 226 | struct sndrv_pcm_hw_params32 __user *data32) |
| 227 | { |
| 228 | struct sndrv_pcm_hw_params *data; |
| 229 | snd_pcm_runtime_t *runtime; |
| 230 | int err; |
| 231 | |
| 232 | if (! (runtime = substream->runtime)) |
| 233 | return -ENOTTY; |
| 234 | |
| 235 | data = kmalloc(sizeof(*data), GFP_KERNEL); |
| 236 | if (data == NULL) |
| 237 | return -ENOMEM; |
| 238 | /* only fifo_size is different, so just copy all */ |
| 239 | if (copy_from_user(data, data32, sizeof(*data32))) { |
| 240 | err = -EFAULT; |
| 241 | goto error; |
| 242 | } |
| 243 | if (refine) |
| 244 | err = snd_pcm_hw_refine(substream, data); |
| 245 | else |
| 246 | err = snd_pcm_hw_params(substream, data); |
| 247 | if (err < 0) |
| 248 | goto error; |
| 249 | if (copy_to_user(data32, data, sizeof(*data32)) || |
| 250 | put_user(data->fifo_size, &data32->fifo_size)) { |
| 251 | err = -EFAULT; |
| 252 | goto error; |
| 253 | } |
| 254 | |
Takashi Iwai | 7153a55 | 2005-08-25 19:51:47 +0200 | [diff] [blame] | 255 | if (! refine) { |
| 256 | unsigned int new_boundary = recalculate_boundary(runtime); |
| 257 | if (new_boundary) |
| 258 | runtime->boundary = new_boundary; |
| 259 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 260 | error: |
| 261 | kfree(data); |
| 262 | return err; |
| 263 | } |
| 264 | |
| 265 | |
| 266 | /* |
| 267 | */ |
| 268 | struct sndrv_xferi32 { |
| 269 | s32 result; |
| 270 | u32 buf; |
| 271 | u32 frames; |
| 272 | }; |
| 273 | |
| 274 | static int snd_pcm_ioctl_xferi_compat(snd_pcm_substream_t *substream, |
| 275 | int dir, struct sndrv_xferi32 __user *data32) |
| 276 | { |
| 277 | compat_caddr_t buf; |
| 278 | u32 frames; |
| 279 | int err; |
| 280 | |
| 281 | if (! substream->runtime) |
| 282 | return -ENOTTY; |
| 283 | if (substream->stream != dir) |
| 284 | return -EINVAL; |
| 285 | if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN) |
| 286 | return -EBADFD; |
| 287 | |
| 288 | if (get_user(buf, &data32->buf) || |
| 289 | get_user(frames, &data32->frames)) |
| 290 | return -EFAULT; |
| 291 | |
| 292 | if (dir == SNDRV_PCM_STREAM_PLAYBACK) |
| 293 | err = snd_pcm_lib_write(substream, compat_ptr(buf), frames); |
| 294 | else |
| 295 | err = snd_pcm_lib_read(substream, compat_ptr(buf), frames); |
| 296 | if (err < 0) |
| 297 | return err; |
| 298 | /* copy the result */ |
| 299 | if (put_user(err, &data32->result)) |
| 300 | return -EFAULT; |
| 301 | return 0; |
| 302 | } |
| 303 | |
| 304 | |
| 305 | /* snd_xfern needs remapping of bufs */ |
| 306 | struct sndrv_xfern32 { |
| 307 | s32 result; |
| 308 | u32 bufs; /* this is void **; */ |
| 309 | u32 frames; |
| 310 | }; |
| 311 | |
| 312 | /* |
| 313 | * xfern ioctl nees to copy (up to) 128 pointers on stack. |
| 314 | * although we may pass the copied pointers through f_op->ioctl, but the ioctl |
| 315 | * handler there expands again the same 128 pointers on stack, so it is better |
| 316 | * to handle the function (calling pcm_readv/writev) directly in this handler. |
| 317 | */ |
| 318 | static int snd_pcm_ioctl_xfern_compat(snd_pcm_substream_t *substream, |
| 319 | int dir, struct sndrv_xfern32 __user *data32) |
| 320 | { |
| 321 | compat_caddr_t buf; |
| 322 | compat_caddr_t __user *bufptr; |
| 323 | u32 frames; |
| 324 | void __user **bufs; |
| 325 | int err, ch, i; |
| 326 | |
| 327 | if (! substream->runtime) |
| 328 | return -ENOTTY; |
| 329 | if (substream->stream != dir) |
| 330 | return -EINVAL; |
| 331 | |
| 332 | if ((ch = substream->runtime->channels) > 128) |
| 333 | return -EINVAL; |
| 334 | if (get_user(buf, &data32->bufs) || |
| 335 | get_user(frames, &data32->frames)) |
| 336 | return -EFAULT; |
| 337 | bufptr = compat_ptr(buf); |
| 338 | bufs = kmalloc(sizeof(void __user *) * ch, GFP_KERNEL); |
| 339 | if (bufs == NULL) |
| 340 | return -ENOMEM; |
| 341 | for (i = 0; i < ch; i++) { |
| 342 | u32 ptr; |
| 343 | if (get_user(ptr, bufptr)) { |
| 344 | kfree(bufs); |
| 345 | return -EFAULT; |
| 346 | } |
| 347 | bufs[ch] = compat_ptr(ptr); |
| 348 | bufptr++; |
| 349 | } |
| 350 | if (dir == SNDRV_PCM_STREAM_PLAYBACK) |
| 351 | err = snd_pcm_lib_writev(substream, bufs, frames); |
| 352 | else |
| 353 | err = snd_pcm_lib_readv(substream, bufs, frames); |
| 354 | if (err >= 0) { |
| 355 | if (put_user(err, &data32->result)) |
| 356 | err = -EFAULT; |
| 357 | } |
| 358 | kfree(bufs); |
| 359 | return err; |
| 360 | } |
| 361 | |
| 362 | |
| 363 | struct sndrv_pcm_mmap_status32 { |
| 364 | s32 state; |
| 365 | s32 pad1; |
| 366 | u32 hw_ptr; |
| 367 | struct compat_timespec tstamp; |
| 368 | s32 suspended_state; |
| 369 | } __attribute__((packed)); |
| 370 | |
| 371 | struct sndrv_pcm_mmap_control32 { |
| 372 | u32 appl_ptr; |
| 373 | u32 avail_min; |
| 374 | }; |
| 375 | |
| 376 | struct sndrv_pcm_sync_ptr32 { |
| 377 | u32 flags; |
| 378 | union { |
| 379 | struct sndrv_pcm_mmap_status32 status; |
| 380 | unsigned char reserved[64]; |
| 381 | } s; |
| 382 | union { |
| 383 | struct sndrv_pcm_mmap_control32 control; |
| 384 | unsigned char reserved[64]; |
| 385 | } c; |
| 386 | } __attribute__((packed)); |
| 387 | |
| 388 | static int snd_pcm_ioctl_sync_ptr_compat(snd_pcm_substream_t *substream, |
| 389 | struct sndrv_pcm_sync_ptr32 __user *src) |
| 390 | { |
| 391 | snd_pcm_runtime_t *runtime = substream->runtime; |
| 392 | volatile struct sndrv_pcm_mmap_status *status; |
| 393 | volatile struct sndrv_pcm_mmap_control *control; |
| 394 | u32 sflags; |
| 395 | struct sndrv_pcm_mmap_control scontrol; |
| 396 | struct sndrv_pcm_mmap_status sstatus; |
Takashi Iwai | b271131 | 2005-08-15 15:01:10 +0200 | [diff] [blame] | 397 | snd_pcm_uframes_t boundary; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 398 | int err; |
| 399 | |
| 400 | snd_assert(runtime, return -EINVAL); |
| 401 | |
| 402 | if (get_user(sflags, &src->flags) || |
| 403 | get_user(scontrol.appl_ptr, &src->c.control.appl_ptr) || |
| 404 | get_user(scontrol.avail_min, &src->c.control.avail_min)) |
| 405 | return -EFAULT; |
| 406 | if (sflags & SNDRV_PCM_SYNC_PTR_HWSYNC) { |
| 407 | err = snd_pcm_hwsync(substream); |
| 408 | if (err < 0) |
| 409 | return err; |
| 410 | } |
| 411 | status = runtime->status; |
| 412 | control = runtime->control; |
Takashi Iwai | b271131 | 2005-08-15 15:01:10 +0200 | [diff] [blame] | 413 | boundary = recalculate_boundary(runtime); |
Takashi Iwai | 7153a55 | 2005-08-25 19:51:47 +0200 | [diff] [blame] | 414 | if (! boundary) |
| 415 | boundary = 0x7fffffff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 416 | snd_pcm_stream_lock_irq(substream); |
Takashi Iwai | b271131 | 2005-08-15 15:01:10 +0200 | [diff] [blame] | 417 | /* FIXME: we should consider the boundary for the sync from app */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 418 | if (!(sflags & SNDRV_PCM_SYNC_PTR_APPL)) |
| 419 | control->appl_ptr = scontrol.appl_ptr; |
| 420 | else |
Takashi Iwai | b271131 | 2005-08-15 15:01:10 +0200 | [diff] [blame] | 421 | scontrol.appl_ptr = control->appl_ptr % boundary; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 422 | if (!(sflags & SNDRV_PCM_SYNC_PTR_AVAIL_MIN)) |
| 423 | control->avail_min = scontrol.avail_min; |
| 424 | else |
| 425 | scontrol.avail_min = control->avail_min; |
| 426 | sstatus.state = status->state; |
Takashi Iwai | b271131 | 2005-08-15 15:01:10 +0200 | [diff] [blame] | 427 | sstatus.hw_ptr = status->hw_ptr % boundary; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 428 | sstatus.tstamp = status->tstamp; |
| 429 | sstatus.suspended_state = status->suspended_state; |
| 430 | snd_pcm_stream_unlock_irq(substream); |
| 431 | if (put_user(sstatus.state, &src->s.status.state) || |
| 432 | put_user(sstatus.hw_ptr, &src->s.status.hw_ptr) || |
| 433 | put_user(sstatus.tstamp.tv_sec, &src->s.status.tstamp.tv_sec) || |
| 434 | put_user(sstatus.tstamp.tv_nsec, &src->s.status.tstamp.tv_nsec) || |
| 435 | put_user(sstatus.suspended_state, &src->s.status.suspended_state) || |
| 436 | put_user(scontrol.appl_ptr, &src->c.control.appl_ptr) || |
| 437 | put_user(scontrol.avail_min, &src->c.control.avail_min)) |
| 438 | return -EFAULT; |
| 439 | |
| 440 | return 0; |
| 441 | } |
| 442 | |
| 443 | |
| 444 | /* |
| 445 | */ |
| 446 | enum { |
| 447 | SNDRV_PCM_IOCTL_HW_REFINE32 = _IOWR('A', 0x10, struct sndrv_pcm_hw_params32), |
| 448 | SNDRV_PCM_IOCTL_HW_PARAMS32 = _IOWR('A', 0x11, struct sndrv_pcm_hw_params32), |
| 449 | SNDRV_PCM_IOCTL_SW_PARAMS32 = _IOWR('A', 0x13, struct sndrv_pcm_sw_params32), |
| 450 | SNDRV_PCM_IOCTL_STATUS32 = _IOR('A', 0x20, struct sndrv_pcm_status32), |
| 451 | SNDRV_PCM_IOCTL_DELAY32 = _IOR('A', 0x21, s32), |
| 452 | SNDRV_PCM_IOCTL_CHANNEL_INFO32 = _IOR('A', 0x32, struct sndrv_pcm_channel_info32), |
| 453 | SNDRV_PCM_IOCTL_REWIND32 = _IOW('A', 0x46, u32), |
| 454 | SNDRV_PCM_IOCTL_FORWARD32 = _IOW('A', 0x49, u32), |
| 455 | SNDRV_PCM_IOCTL_WRITEI_FRAMES32 = _IOW('A', 0x50, struct sndrv_xferi32), |
| 456 | SNDRV_PCM_IOCTL_READI_FRAMES32 = _IOR('A', 0x51, struct sndrv_xferi32), |
| 457 | SNDRV_PCM_IOCTL_WRITEN_FRAMES32 = _IOW('A', 0x52, struct sndrv_xfern32), |
| 458 | SNDRV_PCM_IOCTL_READN_FRAMES32 = _IOR('A', 0x53, struct sndrv_xfern32), |
| 459 | SNDRV_PCM_IOCTL_SYNC_PTR32 = _IOWR('A', 0x23, struct sndrv_pcm_sync_ptr32), |
| 460 | |
| 461 | }; |
| 462 | |
| 463 | static long snd_pcm_ioctl_compat(struct file *file, unsigned int cmd, unsigned long arg) |
| 464 | { |
| 465 | snd_pcm_file_t *pcm_file; |
| 466 | snd_pcm_substream_t *substream; |
| 467 | void __user *argp = compat_ptr(arg); |
| 468 | |
| 469 | pcm_file = file->private_data; |
| 470 | if (! pcm_file) |
| 471 | return -ENOTTY; |
| 472 | substream = pcm_file->substream; |
| 473 | if (! substream) |
| 474 | return -ENOTTY; |
| 475 | |
| 476 | /* |
| 477 | * When PCM is used on 32bit mode, we need to disable |
| 478 | * mmap of PCM status/control records because of the size |
| 479 | * incompatibility. |
| 480 | */ |
| 481 | substream->no_mmap_ctrl = 1; |
| 482 | |
| 483 | switch (cmd) { |
| 484 | case SNDRV_PCM_IOCTL_PVERSION: |
| 485 | case SNDRV_PCM_IOCTL_INFO: |
| 486 | case SNDRV_PCM_IOCTL_TSTAMP: |
| 487 | case SNDRV_PCM_IOCTL_HWSYNC: |
| 488 | case SNDRV_PCM_IOCTL_PREPARE: |
| 489 | case SNDRV_PCM_IOCTL_RESET: |
| 490 | case SNDRV_PCM_IOCTL_START: |
| 491 | case SNDRV_PCM_IOCTL_DROP: |
| 492 | case SNDRV_PCM_IOCTL_DRAIN: |
| 493 | case SNDRV_PCM_IOCTL_PAUSE: |
| 494 | case SNDRV_PCM_IOCTL_HW_FREE: |
| 495 | case SNDRV_PCM_IOCTL_RESUME: |
| 496 | case SNDRV_PCM_IOCTL_XRUN: |
| 497 | case SNDRV_PCM_IOCTL_LINK: |
| 498 | case SNDRV_PCM_IOCTL_UNLINK: |
| 499 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
| 500 | return snd_pcm_playback_ioctl1(substream, cmd, argp); |
| 501 | else |
| 502 | return snd_pcm_capture_ioctl1(substream, cmd, argp); |
| 503 | case SNDRV_PCM_IOCTL_HW_REFINE32: |
| 504 | return snd_pcm_ioctl_hw_params_compat(substream, 1, argp); |
| 505 | case SNDRV_PCM_IOCTL_HW_PARAMS32: |
| 506 | return snd_pcm_ioctl_hw_params_compat(substream, 0, argp); |
| 507 | case SNDRV_PCM_IOCTL_SW_PARAMS32: |
| 508 | return snd_pcm_ioctl_sw_params_compat(substream, argp); |
| 509 | case SNDRV_PCM_IOCTL_STATUS32: |
| 510 | return snd_pcm_status_user_compat(substream, argp); |
| 511 | case SNDRV_PCM_IOCTL_SYNC_PTR32: |
| 512 | return snd_pcm_ioctl_sync_ptr_compat(substream, argp); |
| 513 | case SNDRV_PCM_IOCTL_CHANNEL_INFO32: |
| 514 | return snd_pcm_ioctl_channel_info_compat(substream, argp); |
| 515 | case SNDRV_PCM_IOCTL_WRITEI_FRAMES32: |
| 516 | return snd_pcm_ioctl_xferi_compat(substream, SNDRV_PCM_STREAM_PLAYBACK, argp); |
| 517 | case SNDRV_PCM_IOCTL_READI_FRAMES32: |
| 518 | return snd_pcm_ioctl_xferi_compat(substream, SNDRV_PCM_STREAM_CAPTURE, argp); |
| 519 | case SNDRV_PCM_IOCTL_WRITEN_FRAMES32: |
| 520 | return snd_pcm_ioctl_xfern_compat(substream, SNDRV_PCM_STREAM_PLAYBACK, argp); |
| 521 | case SNDRV_PCM_IOCTL_READN_FRAMES32: |
| 522 | return snd_pcm_ioctl_xfern_compat(substream, SNDRV_PCM_STREAM_CAPTURE, argp); |
| 523 | case SNDRV_PCM_IOCTL_DELAY32: |
| 524 | return snd_pcm_ioctl_delay_compat(substream, argp); |
| 525 | case SNDRV_PCM_IOCTL_REWIND32: |
| 526 | return snd_pcm_ioctl_rewind_compat(substream, argp); |
| 527 | case SNDRV_PCM_IOCTL_FORWARD32: |
| 528 | return snd_pcm_ioctl_forward_compat(substream, argp); |
| 529 | } |
| 530 | |
| 531 | return -ENOIOCTLCMD; |
| 532 | } |