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authorArnd Bergmann <arnd@arndb.de>2007-10-09 07:23:57 -0400
committerJens Axboe <axboe@carl.home.kernel.dk>2007-10-10 03:26:00 -0400
commit1ca91cd0336b05b91c51b403c9ed9d297813533f (patch)
treeae4e2fee28886f3330680921ad088294d97ddb31 /block
parentb3087cc4f31a66c8c7b63419e913ed9d34145f10 (diff)
compat_ioctl: move floppy handlers to block/compat_ioctl.c
The floppy ioctls are used by multiple drivers, so they should be handled in a shared location. Also, add minor cleanups. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'block')
-rw-r--r--block/compat_ioctl.c336
1 files changed, 336 insertions, 0 deletions
diff --git a/block/compat_ioctl.c b/block/compat_ioctl.c
index 92b3e8d07ca6..f84093b97f70 100644
--- a/block/compat_ioctl.c
+++ b/block/compat_ioctl.c
@@ -203,6 +203,332 @@ static int compat_blkpg_ioctl(struct inode *inode, struct file *file,
203#define BLKBSZSET_32 _IOW(0x12, 113, int) 203#define BLKBSZSET_32 _IOW(0x12, 113, int)
204#define BLKGETSIZE64_32 _IOR(0x12, 114, int) 204#define BLKGETSIZE64_32 _IOR(0x12, 114, int)
205 205
206struct compat_floppy_struct {
207 compat_uint_t size;
208 compat_uint_t sect;
209 compat_uint_t head;
210 compat_uint_t track;
211 compat_uint_t stretch;
212 unsigned char gap;
213 unsigned char rate;
214 unsigned char spec1;
215 unsigned char fmt_gap;
216 const compat_caddr_t name;
217};
218
219struct compat_floppy_drive_params {
220 char cmos;
221 compat_ulong_t max_dtr;
222 compat_ulong_t hlt;
223 compat_ulong_t hut;
224 compat_ulong_t srt;
225 compat_ulong_t spinup;
226 compat_ulong_t spindown;
227 unsigned char spindown_offset;
228 unsigned char select_delay;
229 unsigned char rps;
230 unsigned char tracks;
231 compat_ulong_t timeout;
232 unsigned char interleave_sect;
233 struct floppy_max_errors max_errors;
234 char flags;
235 char read_track;
236 short autodetect[8];
237 compat_int_t checkfreq;
238 compat_int_t native_format;
239};
240
241struct compat_floppy_drive_struct {
242 signed char flags;
243 compat_ulong_t spinup_date;
244 compat_ulong_t select_date;
245 compat_ulong_t first_read_date;
246 short probed_format;
247 short track;
248 short maxblock;
249 short maxtrack;
250 compat_int_t generation;
251 compat_int_t keep_data;
252 compat_int_t fd_ref;
253 compat_int_t fd_device;
254 compat_int_t last_checked;
255 compat_caddr_t dmabuf;
256 compat_int_t bufblocks;
257};
258
259struct compat_floppy_fdc_state {
260 compat_int_t spec1;
261 compat_int_t spec2;
262 compat_int_t dtr;
263 unsigned char version;
264 unsigned char dor;
265 compat_ulong_t address;
266 unsigned int rawcmd:2;
267 unsigned int reset:1;
268 unsigned int need_configure:1;
269 unsigned int perp_mode:2;
270 unsigned int has_fifo:1;
271 unsigned int driver_version;
272 unsigned char track[4];
273};
274
275struct compat_floppy_write_errors {
276 unsigned int write_errors;
277 compat_ulong_t first_error_sector;
278 compat_int_t first_error_generation;
279 compat_ulong_t last_error_sector;
280 compat_int_t last_error_generation;
281 compat_uint_t badness;
282};
283
284#define FDSETPRM32 _IOW(2, 0x42, struct compat_floppy_struct)
285#define FDDEFPRM32 _IOW(2, 0x43, struct compat_floppy_struct)
286#define FDGETPRM32 _IOR(2, 0x04, struct compat_floppy_struct)
287#define FDSETDRVPRM32 _IOW(2, 0x90, struct compat_floppy_drive_params)
288#define FDGETDRVPRM32 _IOR(2, 0x11, struct compat_floppy_drive_params)
289#define FDGETDRVSTAT32 _IOR(2, 0x12, struct compat_floppy_drive_struct)
290#define FDPOLLDRVSTAT32 _IOR(2, 0x13, struct compat_floppy_drive_struct)
291#define FDGETFDCSTAT32 _IOR(2, 0x15, struct compat_floppy_fdc_state)
292#define FDWERRORGET32 _IOR(2, 0x17, struct compat_floppy_write_errors)
293
294static struct {
295 unsigned int cmd32;
296 unsigned int cmd;
297} fd_ioctl_trans_table[] = {
298 { FDSETPRM32, FDSETPRM },
299 { FDDEFPRM32, FDDEFPRM },
300 { FDGETPRM32, FDGETPRM },
301 { FDSETDRVPRM32, FDSETDRVPRM },
302 { FDGETDRVPRM32, FDGETDRVPRM },
303 { FDGETDRVSTAT32, FDGETDRVSTAT },
304 { FDPOLLDRVSTAT32, FDPOLLDRVSTAT },
305 { FDGETFDCSTAT32, FDGETFDCSTAT },
306 { FDWERRORGET32, FDWERRORGET }
307};
308
309#define NR_FD_IOCTL_TRANS ARRAY_SIZE(fd_ioctl_trans_table)
310
311static int compat_fd_ioctl(struct inode *inode, struct file *file,
312 struct gendisk *disk, unsigned int cmd, unsigned long arg)
313{
314 mm_segment_t old_fs = get_fs();
315 void *karg = NULL;
316 unsigned int kcmd = 0;
317 int i, err;
318
319 for (i = 0; i < NR_FD_IOCTL_TRANS; i++)
320 if (cmd == fd_ioctl_trans_table[i].cmd32) {
321 kcmd = fd_ioctl_trans_table[i].cmd;
322 break;
323 }
324 if (!kcmd)
325 return -EINVAL;
326
327 switch (cmd) {
328 case FDSETPRM32:
329 case FDDEFPRM32:
330 case FDGETPRM32:
331 {
332 compat_uptr_t name;
333 struct compat_floppy_struct __user *uf;
334 struct floppy_struct *f;
335
336 uf = compat_ptr(arg);
337 f = karg = kmalloc(sizeof(struct floppy_struct), GFP_KERNEL);
338 if (!karg)
339 return -ENOMEM;
340 if (cmd == FDGETPRM32)
341 break;
342 err = __get_user(f->size, &uf->size);
343 err |= __get_user(f->sect, &uf->sect);
344 err |= __get_user(f->head, &uf->head);
345 err |= __get_user(f->track, &uf->track);
346 err |= __get_user(f->stretch, &uf->stretch);
347 err |= __get_user(f->gap, &uf->gap);
348 err |= __get_user(f->rate, &uf->rate);
349 err |= __get_user(f->spec1, &uf->spec1);
350 err |= __get_user(f->fmt_gap, &uf->fmt_gap);
351 err |= __get_user(name, &uf->name);
352 f->name = compat_ptr(name);
353 if (err) {
354 err = -EFAULT;
355 goto out;
356 }
357 break;
358 }
359 case FDSETDRVPRM32:
360 case FDGETDRVPRM32:
361 {
362 struct compat_floppy_drive_params __user *uf;
363 struct floppy_drive_params *f;
364
365 uf = compat_ptr(arg);
366 f = karg = kmalloc(sizeof(struct floppy_drive_params), GFP_KERNEL);
367 if (!karg)
368 return -ENOMEM;
369 if (cmd == FDGETDRVPRM32)
370 break;
371 err = __get_user(f->cmos, &uf->cmos);
372 err |= __get_user(f->max_dtr, &uf->max_dtr);
373 err |= __get_user(f->hlt, &uf->hlt);
374 err |= __get_user(f->hut, &uf->hut);
375 err |= __get_user(f->srt, &uf->srt);
376 err |= __get_user(f->spinup, &uf->spinup);
377 err |= __get_user(f->spindown, &uf->spindown);
378 err |= __get_user(f->spindown_offset, &uf->spindown_offset);
379 err |= __get_user(f->select_delay, &uf->select_delay);
380 err |= __get_user(f->rps, &uf->rps);
381 err |= __get_user(f->tracks, &uf->tracks);
382 err |= __get_user(f->timeout, &uf->timeout);
383 err |= __get_user(f->interleave_sect, &uf->interleave_sect);
384 err |= __copy_from_user(&f->max_errors, &uf->max_errors, sizeof(f->max_errors));
385 err |= __get_user(f->flags, &uf->flags);
386 err |= __get_user(f->read_track, &uf->read_track);
387 err |= __copy_from_user(f->autodetect, uf->autodetect, sizeof(f->autodetect));
388 err |= __get_user(f->checkfreq, &uf->checkfreq);
389 err |= __get_user(f->native_format, &uf->native_format);
390 if (err) {
391 err = -EFAULT;
392 goto out;
393 }
394 break;
395 }
396 case FDGETDRVSTAT32:
397 case FDPOLLDRVSTAT32:
398 karg = kmalloc(sizeof(struct floppy_drive_struct), GFP_KERNEL);
399 if (!karg)
400 return -ENOMEM;
401 break;
402 case FDGETFDCSTAT32:
403 karg = kmalloc(sizeof(struct floppy_fdc_state), GFP_KERNEL);
404 if (!karg)
405 return -ENOMEM;
406 break;
407 case FDWERRORGET32:
408 karg = kmalloc(sizeof(struct floppy_write_errors), GFP_KERNEL);
409 if (!karg)
410 return -ENOMEM;
411 break;
412 default:
413 return -EINVAL;
414 }
415 set_fs(KERNEL_DS);
416 err = blkdev_driver_ioctl(inode, file, disk, kcmd, (unsigned long)karg);
417 set_fs(old_fs);
418 if (err)
419 goto out;
420 switch (cmd) {
421 case FDGETPRM32:
422 {
423 struct floppy_struct *f = karg;
424 struct compat_floppy_struct __user *uf = compat_ptr(arg);
425
426 err = __put_user(f->size, &uf->size);
427 err |= __put_user(f->sect, &uf->sect);
428 err |= __put_user(f->head, &uf->head);
429 err |= __put_user(f->track, &uf->track);
430 err |= __put_user(f->stretch, &uf->stretch);
431 err |= __put_user(f->gap, &uf->gap);
432 err |= __put_user(f->rate, &uf->rate);
433 err |= __put_user(f->spec1, &uf->spec1);
434 err |= __put_user(f->fmt_gap, &uf->fmt_gap);
435 err |= __put_user((u64)f->name, (compat_caddr_t __user *)&uf->name);
436 break;
437 }
438 case FDGETDRVPRM32:
439 {
440 struct compat_floppy_drive_params __user *uf;
441 struct floppy_drive_params *f = karg;
442
443 uf = compat_ptr(arg);
444 err = __put_user(f->cmos, &uf->cmos);
445 err |= __put_user(f->max_dtr, &uf->max_dtr);
446 err |= __put_user(f->hlt, &uf->hlt);
447 err |= __put_user(f->hut, &uf->hut);
448 err |= __put_user(f->srt, &uf->srt);
449 err |= __put_user(f->spinup, &uf->spinup);
450 err |= __put_user(f->spindown, &uf->spindown);
451 err |= __put_user(f->spindown_offset, &uf->spindown_offset);
452 err |= __put_user(f->select_delay, &uf->select_delay);
453 err |= __put_user(f->rps, &uf->rps);
454 err |= __put_user(f->tracks, &uf->tracks);
455 err |= __put_user(f->timeout, &uf->timeout);
456 err |= __put_user(f->interleave_sect, &uf->interleave_sect);
457 err |= __copy_to_user(&uf->max_errors, &f->max_errors, sizeof(f->max_errors));
458 err |= __put_user(f->flags, &uf->flags);
459 err |= __put_user(f->read_track, &uf->read_track);
460 err |= __copy_to_user(uf->autodetect, f->autodetect, sizeof(f->autodetect));
461 err |= __put_user(f->checkfreq, &uf->checkfreq);
462 err |= __put_user(f->native_format, &uf->native_format);
463 break;
464 }
465 case FDGETDRVSTAT32:
466 case FDPOLLDRVSTAT32:
467 {
468 struct compat_floppy_drive_struct __user *uf;
469 struct floppy_drive_struct *f = karg;
470
471 uf = compat_ptr(arg);
472 err = __put_user(f->flags, &uf->flags);
473 err |= __put_user(f->spinup_date, &uf->spinup_date);
474 err |= __put_user(f->select_date, &uf->select_date);
475 err |= __put_user(f->first_read_date, &uf->first_read_date);
476 err |= __put_user(f->probed_format, &uf->probed_format);
477 err |= __put_user(f->track, &uf->track);
478 err |= __put_user(f->maxblock, &uf->maxblock);
479 err |= __put_user(f->maxtrack, &uf->maxtrack);
480 err |= __put_user(f->generation, &uf->generation);
481 err |= __put_user(f->keep_data, &uf->keep_data);
482 err |= __put_user(f->fd_ref, &uf->fd_ref);
483 err |= __put_user(f->fd_device, &uf->fd_device);
484 err |= __put_user(f->last_checked, &uf->last_checked);
485 err |= __put_user((u64)f->dmabuf, &uf->dmabuf);
486 err |= __put_user((u64)f->bufblocks, &uf->bufblocks);
487 break;
488 }
489 case FDGETFDCSTAT32:
490 {
491 struct compat_floppy_fdc_state __user *uf;
492 struct floppy_fdc_state *f = karg;
493
494 uf = compat_ptr(arg);
495 err = __put_user(f->spec1, &uf->spec1);
496 err |= __put_user(f->spec2, &uf->spec2);
497 err |= __put_user(f->dtr, &uf->dtr);
498 err |= __put_user(f->version, &uf->version);
499 err |= __put_user(f->dor, &uf->dor);
500 err |= __put_user(f->address, &uf->address);
501 err |= __copy_to_user((char __user *)&uf->address + sizeof(uf->address),
502 (char *)&f->address + sizeof(f->address), sizeof(int));
503 err |= __put_user(f->driver_version, &uf->driver_version);
504 err |= __copy_to_user(uf->track, f->track, sizeof(f->track));
505 break;
506 }
507 case FDWERRORGET32:
508 {
509 struct compat_floppy_write_errors __user *uf;
510 struct floppy_write_errors *f = karg;
511
512 uf = compat_ptr(arg);
513 err = __put_user(f->write_errors, &uf->write_errors);
514 err |= __put_user(f->first_error_sector, &uf->first_error_sector);
515 err |= __put_user(f->first_error_generation, &uf->first_error_generation);
516 err |= __put_user(f->last_error_sector, &uf->last_error_sector);
517 err |= __put_user(f->last_error_generation, &uf->last_error_generation);
518 err |= __put_user(f->badness, &uf->badness);
519 break;
520 }
521 default:
522 break;
523 }
524 if (err)
525 err = -EFAULT;
526
527out:
528 kfree(karg);
529 return err;
530}
531
206struct compat_blk_user_trace_setup { 532struct compat_blk_user_trace_setup {
207 char name[32]; 533 char name[32];
208 u16 act_mask; 534 u16 act_mask;
@@ -268,6 +594,16 @@ static int compat_blkdev_driver_ioctl(struct inode *inode, struct file *file,
268 case HDIO_GET_ADDRESS: 594 case HDIO_GET_ADDRESS:
269 case HDIO_GET_BUSSTATE: 595 case HDIO_GET_BUSSTATE:
270 return compat_hdio_ioctl(inode, file, disk, cmd, arg); 596 return compat_hdio_ioctl(inode, file, disk, cmd, arg);
597 case FDSETPRM32:
598 case FDDEFPRM32:
599 case FDGETPRM32:
600 case FDSETDRVPRM32:
601 case FDGETDRVPRM32:
602 case FDGETDRVSTAT32:
603 case FDPOLLDRVSTAT32:
604 case FDGETFDCSTAT32:
605 case FDWERRORGET32:
606 return compat_fd_ioctl(inode, file, disk, cmd, arg);
271 case CDROMREADAUDIO: 607 case CDROMREADAUDIO:
272 return compat_cdrom_read_audio(inode, file, disk, cmd, arg); 608 return compat_cdrom_read_audio(inode, file, disk, cmd, arg);
273 case CDROM_SEND_PACKET: 609 case CDROM_SEND_PACKET:
generated by cgit v1.2.2 (git 2.25.0) at 2024-09-21 05:49:42 -0400