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Merge tag 'linux-kselftest-4.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel...
[linux/fpc-iii.git] / fs / compat_ioctl.c
blob5fc5dc66060052af88730f3608b1930a397a412d
1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * ioctl32.c: Conversion between 32bit and 64bit native ioctls.
4 *
5 * Copyright (C) 1997-2000 Jakub Jelinek (jakub@redhat.com)
6 * Copyright (C) 1998 Eddie C. Dost (ecd@skynet.be)
7 * Copyright (C) 2001,2002 Andi Kleen, SuSE Labs
8 * Copyright (C) 2003 Pavel Machek (pavel@ucw.cz)
9 *
10 * These routines maintain argument size conversion between 32bit and 64bit
11 * ioctls.
12 */
13
14 #include <linux/joystick.h>
15
16 #include <linux/types.h>
17 #include <linux/compat.h>
18 #include <linux/kernel.h>
19 #include <linux/capability.h>
20 #include <linux/compiler.h>
21 #include <linux/sched.h>
22 #include <linux/smp.h>
23 #include <linux/ioctl.h>
24 #include <linux/if.h>
25 #include <linux/if_bridge.h>
26 #include <linux/raid/md_u.h>
27 #include <linux/kd.h>
28 #include <linux/route.h>
29 #include <linux/in6.h>
30 #include <linux/ipv6_route.h>
31 #include <linux/skbuff.h>
32 #include <linux/netlink.h>
33 #include <linux/vt.h>
34 #include <linux/falloc.h>
35 #include <linux/fs.h>
36 #include <linux/file.h>
37 #include <linux/ppp_defs.h>
38 #include <linux/ppp-ioctl.h>
39 #include <linux/if_pppox.h>
40 #include <linux/mtio.h>
41 #include <linux/auto_fs.h>
42 #include <linux/auto_fs4.h>
43 #include <linux/tty.h>
44 #include <linux/vt_kern.h>
45 #include <linux/fb.h>
46 #include <linux/videodev2.h>
47 #include <linux/netdevice.h>
48 #include <linux/raw.h>
49 #include <linux/blkdev.h>
50 #include <linux/elevator.h>
51 #include <linux/rtc.h>
52 #include <linux/pci.h>
53 #include <linux/serial.h>
54 #include <linux/if_tun.h>
55 #include <linux/ctype.h>
56 #include <linux/syscalls.h>
57 #include <linux/atalk.h>
58 #include <linux/gfp.h>
59 #include <linux/cec.h>
60
61 #include "internal.h"
62
63 #include <net/bluetooth/bluetooth.h>
64 #include <net/bluetooth/hci_sock.h>
65 #include <net/bluetooth/rfcomm.h>
66
67 #include <linux/capi.h>
68 #include <linux/gigaset_dev.h>
69
70 #ifdef CONFIG_BLOCK
71 #include <linux/cdrom.h>
72 #include <linux/fd.h>
73 #include <scsi/scsi.h>
74 #include <scsi/scsi_ioctl.h>
75 #include <scsi/sg.h>
76 #endif
77
78 #include <linux/uaccess.h>
79 #include <linux/ethtool.h>
80 #include <linux/mii.h>
81 #include <linux/if_bonding.h>
82 #include <linux/watchdog.h>
83
84 #include <linux/soundcard.h>
85 #include <linux/lp.h>
86 #include <linux/ppdev.h>
87
88 #include <linux/atm.h>
89 #include <linux/atmarp.h>
90 #include <linux/atmclip.h>
91 #include <linux/atmdev.h>
92 #include <linux/atmioc.h>
93 #include <linux/atmlec.h>
94 #include <linux/atmmpc.h>
95 #include <linux/atmsvc.h>
96 #include <linux/atm_tcp.h>
97 #include <linux/sonet.h>
98 #include <linux/atm_suni.h>
99
100 #include <linux/usb.h>
101 #include <linux/usbdevice_fs.h>
102 #include <linux/nbd.h>
103 #include <linux/random.h>
104 #include <linux/filter.h>
105
106 #include <linux/hiddev.h>
107
108 #define __DVB_CORE__
109 #include <linux/dvb/audio.h>
110 #include <linux/dvb/dmx.h>
111 #include <linux/dvb/frontend.h>
112 #include <linux/dvb/video.h>
113
114 #include <linux/sort.h>
115
116 #ifdef CONFIG_SPARC
117 #include <asm/fbio.h>
118 #endif
119
120 #define convert_in_user(srcptr, dstptr) \
121 ({ \
122 typeof(*srcptr) val; \
123 \
124 get_user(val, srcptr) || put_user(val, dstptr); \
125 })
126
127 static int do_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
128 {
129 int err;
130
131 err = security_file_ioctl(file, cmd, arg);
132 if (err)
133 return err;
134
135 return vfs_ioctl(file, cmd, arg);
136 }
137
138 struct compat_video_event {
139 int32_t type;
140 compat_time_t timestamp;
141 union {
142 video_size_t size;
143 unsigned int frame_rate;
144 } u;
145 };
146
147 static int do_video_get_event(struct file *file,
148 unsigned int cmd, struct compat_video_event __user *up)
149 {
150 struct video_event __user *kevent =
151 compat_alloc_user_space(sizeof(*kevent));
152 int err;
153
154 if (kevent == NULL)
155 return -EFAULT;
156
157 err = do_ioctl(file, cmd, (unsigned long)kevent);
158 if (!err) {
159 err = convert_in_user(&kevent->type, &up->type);
160 err |= convert_in_user(&kevent->timestamp, &up->timestamp);
161 err |= convert_in_user(&kevent->u.size.w, &up->u.size.w);
162 err |= convert_in_user(&kevent->u.size.h, &up->u.size.h);
163 err |= convert_in_user(&kevent->u.size.aspect_ratio,
164 &up->u.size.aspect_ratio);
165 if (err)
166 err = -EFAULT;
167 }
168
169 return err;
170 }
171
172 struct compat_video_still_picture {
173 compat_uptr_t iFrame;
174 int32_t size;
175 };
176
177 static int do_video_stillpicture(struct file *file,
178 unsigned int cmd, struct compat_video_still_picture __user *up)
179 {
180 struct video_still_picture __user *up_native;
181 compat_uptr_t fp;
182 int32_t size;
183 int err;
184
185 err = get_user(fp, &up->iFrame);
186 err |= get_user(size, &up->size);
187 if (err)
188 return -EFAULT;
189
190 up_native =
191 compat_alloc_user_space(sizeof(struct video_still_picture));
192
193 err = put_user(compat_ptr(fp), &up_native->iFrame);
194 err |= put_user(size, &up_native->size);
195 if (err)
196 return -EFAULT;
197
198 err = do_ioctl(file, cmd, (unsigned long) up_native);
199
200 return err;
201 }
202
203 struct compat_video_spu_palette {
204 int length;
205 compat_uptr_t palette;
206 };
207
208 static int do_video_set_spu_palette(struct file *file,
209 unsigned int cmd, struct compat_video_spu_palette __user *up)
210 {
211 struct video_spu_palette __user *up_native;
212 compat_uptr_t palp;
213 int length, err;
214
215 err = get_user(palp, &up->palette);
216 err |= get_user(length, &up->length);
217 if (err)
218 return -EFAULT;
219
220 up_native = compat_alloc_user_space(sizeof(struct video_spu_palette));
221 err = put_user(compat_ptr(palp), &up_native->palette);
222 err |= put_user(length, &up_native->length);
223 if (err)
224 return -EFAULT;
225
226 err = do_ioctl(file, cmd, (unsigned long) up_native);
227
228 return err;
229 }
230
231 #ifdef CONFIG_BLOCK
232 typedef struct sg_io_hdr32 {
233 compat_int_t interface_id; /* [i] 'S' for SCSI generic (required) */
234 compat_int_t dxfer_direction; /* [i] data transfer direction */
235 unsigned char cmd_len; /* [i] SCSI command length ( <= 16 bytes) */
236 unsigned char mx_sb_len; /* [i] max length to write to sbp */
237 unsigned short iovec_count; /* [i] 0 implies no scatter gather */
238 compat_uint_t dxfer_len; /* [i] byte count of data transfer */
239 compat_uint_t dxferp; /* [i], [*io] points to data transfer memory
240 or scatter gather list */
241 compat_uptr_t cmdp; /* [i], [*i] points to command to perform */
242 compat_uptr_t sbp; /* [i], [*o] points to sense_buffer memory */
243 compat_uint_t timeout; /* [i] MAX_UINT->no timeout (unit: millisec) */
244 compat_uint_t flags; /* [i] 0 -> default, see SG_FLAG... */
245 compat_int_t pack_id; /* [i->o] unused internally (normally) */
246 compat_uptr_t usr_ptr; /* [i->o] unused internally */
247 unsigned char status; /* [o] scsi status */
248 unsigned char masked_status; /* [o] shifted, masked scsi status */
249 unsigned char msg_status; /* [o] messaging level data (optional) */
250 unsigned char sb_len_wr; /* [o] byte count actually written to sbp */
251 unsigned short host_status; /* [o] errors from host adapter */
252 unsigned short driver_status; /* [o] errors from software driver */
253 compat_int_t resid; /* [o] dxfer_len - actual_transferred */
254 compat_uint_t duration; /* [o] time taken by cmd (unit: millisec) */
255 compat_uint_t info; /* [o] auxiliary information */
256 } sg_io_hdr32_t; /* 64 bytes long (on sparc32) */
257
258 typedef struct sg_iovec32 {
259 compat_uint_t iov_base;
260 compat_uint_t iov_len;
261 } sg_iovec32_t;
262
263 static int sg_build_iovec(sg_io_hdr_t __user *sgio, void __user *dxferp, u16 iovec_count)
264 {
265 sg_iovec_t __user *iov = (sg_iovec_t __user *) (sgio + 1);
266 sg_iovec32_t __user *iov32 = dxferp;
267 int i;
268
269 for (i = 0; i < iovec_count; i++) {
270 u32 base, len;
271
272 if (get_user(base, &iov32[i].iov_base) ||
273 get_user(len, &iov32[i].iov_len) ||
274 put_user(compat_ptr(base), &iov[i].iov_base) ||
275 put_user(len, &iov[i].iov_len))
276 return -EFAULT;
277 }
278
279 if (put_user(iov, &sgio->dxferp))
280 return -EFAULT;
281 return 0;
282 }
283
284 static int sg_ioctl_trans(struct file *file, unsigned int cmd,
285 sg_io_hdr32_t __user *sgio32)
286 {
287 sg_io_hdr_t __user *sgio;
288 u16 iovec_count;
289 u32 data;
290 void __user *dxferp;
291 int err;
292 int interface_id;
293
294 if (get_user(interface_id, &sgio32->interface_id))
295 return -EFAULT;
296 if (interface_id != 'S')
297 return do_ioctl(file, cmd, (unsigned long)sgio32);
298
299 if (get_user(iovec_count, &sgio32->iovec_count))
300 return -EFAULT;
301
302 {
303 void __user *top = compat_alloc_user_space(0);
304 void __user *new = compat_alloc_user_space(sizeof(sg_io_hdr_t) +
305 (iovec_count * sizeof(sg_iovec_t)));
306 if (new > top)
307 return -EINVAL;
308
309 sgio = new;
310 }
311
312 /* Ok, now construct. */
313 if (copy_in_user(&sgio->interface_id, &sgio32->interface_id,
314 (2 * sizeof(int)) +
315 (2 * sizeof(unsigned char)) +
316 (1 * sizeof(unsigned short)) +
317 (1 * sizeof(unsigned int))))
318 return -EFAULT;
319
320 if (get_user(data, &sgio32->dxferp))
321 return -EFAULT;
322 dxferp = compat_ptr(data);
323 if (iovec_count) {
324 if (sg_build_iovec(sgio, dxferp, iovec_count))
325 return -EFAULT;
326 } else {
327 if (put_user(dxferp, &sgio->dxferp))
328 return -EFAULT;
329 }
330
331 {
332 unsigned char __user *cmdp;
333 unsigned char __user *sbp;
334
335 if (get_user(data, &sgio32->cmdp))
336 return -EFAULT;
337 cmdp = compat_ptr(data);
338
339 if (get_user(data, &sgio32->sbp))
340 return -EFAULT;
341 sbp = compat_ptr(data);
342
343 if (put_user(cmdp, &sgio->cmdp) ||
344 put_user(sbp, &sgio->sbp))
345 return -EFAULT;
346 }
347
348 if (copy_in_user(&sgio->timeout, &sgio32->timeout,
349 3 * sizeof(int)))
350 return -EFAULT;
351
352 if (get_user(data, &sgio32->usr_ptr))
353 return -EFAULT;
354 if (put_user(compat_ptr(data), &sgio->usr_ptr))
355 return -EFAULT;
356
357 err = do_ioctl(file, cmd, (unsigned long) sgio);
358
359 if (err >= 0) {
360 void __user *datap;
361
362 if (copy_in_user(&sgio32->pack_id, &sgio->pack_id,
363 sizeof(int)) ||
364 get_user(datap, &sgio->usr_ptr) ||
365 put_user((u32)(unsigned long)datap,
366 &sgio32->usr_ptr) ||
367 copy_in_user(&sgio32->status, &sgio->status,
368 (4 * sizeof(unsigned char)) +
369 (2 * sizeof(unsigned short)) +
370 (3 * sizeof(int))))
371 err = -EFAULT;
372 }
373
374 return err;
375 }
376
377 struct compat_sg_req_info { /* used by SG_GET_REQUEST_TABLE ioctl() */
378 char req_state;
379 char orphan;
380 char sg_io_owned;
381 char problem;
382 int pack_id;
383 compat_uptr_t usr_ptr;
384 unsigned int duration;
385 int unused;
386 };
387
388 static int sg_grt_trans(struct file *file,
389 unsigned int cmd, struct compat_sg_req_info __user *o)
390 {
391 int err, i;
392 sg_req_info_t __user *r;
393 r = compat_alloc_user_space(sizeof(sg_req_info_t)*SG_MAX_QUEUE);
394 err = do_ioctl(file, cmd, (unsigned long)r);
395 if (err < 0)
396 return err;
397 for (i = 0; i < SG_MAX_QUEUE; i++) {
398 void __user *ptr;
399 int d;
400
401 if (copy_in_user(o + i, r + i, offsetof(sg_req_info_t, usr_ptr)) ||
402 get_user(ptr, &r[i].usr_ptr) ||
403 get_user(d, &r[i].duration) ||
404 put_user((u32)(unsigned long)(ptr), &o[i].usr_ptr) ||
405 put_user(d, &o[i].duration))
406 return -EFAULT;
407 }
408 return err;
409 }
410 #endif /* CONFIG_BLOCK */
411
412 struct sock_fprog32 {
413 unsigned short len;
414 compat_caddr_t filter;
415 };
416
417 #define PPPIOCSPASS32 _IOW('t', 71, struct sock_fprog32)
418 #define PPPIOCSACTIVE32 _IOW('t', 70, struct sock_fprog32)
419
420 static int ppp_sock_fprog_ioctl_trans(struct file *file,
421 unsigned int cmd, struct sock_fprog32 __user *u_fprog32)
422 {
423 struct sock_fprog __user *u_fprog64 = compat_alloc_user_space(sizeof(struct sock_fprog));
424 void __user *fptr64;
425 u32 fptr32;
426 u16 flen;
427
428 if (get_user(flen, &u_fprog32->len) ||
429 get_user(fptr32, &u_fprog32->filter))
430 return -EFAULT;
431
432 fptr64 = compat_ptr(fptr32);
433
434 if (put_user(flen, &u_fprog64->len) ||
435 put_user(fptr64, &u_fprog64->filter))
436 return -EFAULT;
437
438 if (cmd == PPPIOCSPASS32)
439 cmd = PPPIOCSPASS;
440 else
441 cmd = PPPIOCSACTIVE;
442
443 return do_ioctl(file, cmd, (unsigned long) u_fprog64);
444 }
445
446 struct ppp_option_data32 {
447 compat_caddr_t ptr;
448 u32 length;
449 compat_int_t transmit;
450 };
451 #define PPPIOCSCOMPRESS32 _IOW('t', 77, struct ppp_option_data32)
452
453 struct ppp_idle32 {
454 compat_time_t xmit_idle;
455 compat_time_t recv_idle;
456 };
457 #define PPPIOCGIDLE32 _IOR('t', 63, struct ppp_idle32)
458
459 static int ppp_gidle(struct file *file, unsigned int cmd,
460 struct ppp_idle32 __user *idle32)
461 {
462 struct ppp_idle __user *idle;
463 __kernel_time_t xmit, recv;
464 int err;
465
466 idle = compat_alloc_user_space(sizeof(*idle));
467
468 err = do_ioctl(file, PPPIOCGIDLE, (unsigned long) idle);
469
470 if (!err) {
471 if (get_user(xmit, &idle->xmit_idle) ||
472 get_user(recv, &idle->recv_idle) ||
473 put_user(xmit, &idle32->xmit_idle) ||
474 put_user(recv, &idle32->recv_idle))
475 err = -EFAULT;
476 }
477 return err;
478 }
479
480 static int ppp_scompress(struct file *file, unsigned int cmd,
481 struct ppp_option_data32 __user *odata32)
482 {
483 struct ppp_option_data __user *odata;
484 __u32 data;
485 void __user *datap;
486
487 odata = compat_alloc_user_space(sizeof(*odata));
488
489 if (get_user(data, &odata32->ptr))
490 return -EFAULT;
491
492 datap = compat_ptr(data);
493 if (put_user(datap, &odata->ptr))
494 return -EFAULT;
495
496 if (copy_in_user(&odata->length, &odata32->length,
497 sizeof(__u32) + sizeof(int)))
498 return -EFAULT;
499
500 return do_ioctl(file, PPPIOCSCOMPRESS, (unsigned long) odata);
501 }
502
503 #ifdef CONFIG_BLOCK
504 struct mtget32 {
505 compat_long_t mt_type;
506 compat_long_t mt_resid;
507 compat_long_t mt_dsreg;
508 compat_long_t mt_gstat;
509 compat_long_t mt_erreg;
510 compat_daddr_t mt_fileno;
511 compat_daddr_t mt_blkno;
512 };
513 #define MTIOCGET32 _IOR('m', 2, struct mtget32)
514
515 struct mtpos32 {
516 compat_long_t mt_blkno;
517 };
518 #define MTIOCPOS32 _IOR('m', 3, struct mtpos32)
519
520 static int mt_ioctl_trans(struct file *file,
521 unsigned int cmd, void __user *argp)
522 {
523 /* NULL initialization to make gcc shut up */
524 struct mtget __user *get = NULL;
525 struct mtget32 __user *umget32;
526 struct mtpos __user *pos = NULL;
527 struct mtpos32 __user *upos32;
528 unsigned long kcmd;
529 void *karg;
530 int err = 0;
531
532 switch(cmd) {
533 case MTIOCPOS32:
534 kcmd = MTIOCPOS;
535 pos = compat_alloc_user_space(sizeof(*pos));
536 karg = pos;
537 break;
538 default: /* MTIOCGET32 */
539 kcmd = MTIOCGET;
540 get = compat_alloc_user_space(sizeof(*get));
541 karg = get;
542 break;
543 }
544 if (karg == NULL)
545 return -EFAULT;
546 err = do_ioctl(file, kcmd, (unsigned long)karg);
547 if (err)
548 return err;
549 switch (cmd) {
550 case MTIOCPOS32:
551 upos32 = argp;
552 err = convert_in_user(&pos->mt_blkno, &upos32->mt_blkno);
553 break;
554 case MTIOCGET32:
555 umget32 = argp;
556 err = convert_in_user(&get->mt_type, &umget32->mt_type);
557 err |= convert_in_user(&get->mt_resid, &umget32->mt_resid);
558 err |= convert_in_user(&get->mt_dsreg, &umget32->mt_dsreg);
559 err |= convert_in_user(&get->mt_gstat, &umget32->mt_gstat);
560 err |= convert_in_user(&get->mt_erreg, &umget32->mt_erreg);
561 err |= convert_in_user(&get->mt_fileno, &umget32->mt_fileno);
562 err |= convert_in_user(&get->mt_blkno, &umget32->mt_blkno);
563 break;
564 }
565 return err ? -EFAULT: 0;
566 }
567
568 #endif /* CONFIG_BLOCK */
569
570 /* Bluetooth ioctls */
571 #define HCIUARTSETPROTO _IOW('U', 200, int)
572 #define HCIUARTGETPROTO _IOR('U', 201, int)
573 #define HCIUARTGETDEVICE _IOR('U', 202, int)
574 #define HCIUARTSETFLAGS _IOW('U', 203, int)
575 #define HCIUARTGETFLAGS _IOR('U', 204, int)
576
577 #define BNEPCONNADD _IOW('B', 200, int)
578 #define BNEPCONNDEL _IOW('B', 201, int)
579 #define BNEPGETCONNLIST _IOR('B', 210, int)
580 #define BNEPGETCONNINFO _IOR('B', 211, int)
581 #define BNEPGETSUPPFEAT _IOR('B', 212, int)
582
583 #define CMTPCONNADD _IOW('C', 200, int)
584 #define CMTPCONNDEL _IOW('C', 201, int)
585 #define CMTPGETCONNLIST _IOR('C', 210, int)
586 #define CMTPGETCONNINFO _IOR('C', 211, int)
587
588 #define HIDPCONNADD _IOW('H', 200, int)
589 #define HIDPCONNDEL _IOW('H', 201, int)
590 #define HIDPGETCONNLIST _IOR('H', 210, int)
591 #define HIDPGETCONNINFO _IOR('H', 211, int)
592
593
594 struct serial_struct32 {
595 compat_int_t type;
596 compat_int_t line;
597 compat_uint_t port;
598 compat_int_t irq;
599 compat_int_t flags;
600 compat_int_t xmit_fifo_size;
601 compat_int_t custom_divisor;
602 compat_int_t baud_base;
603 unsigned short close_delay;
604 char io_type;
605 char reserved_char[1];
606 compat_int_t hub6;
607 unsigned short closing_wait; /* time to wait before closing */
608 unsigned short closing_wait2; /* no longer used... */
609 compat_uint_t iomem_base;
610 unsigned short iomem_reg_shift;
611 unsigned int port_high;
612 /* compat_ulong_t iomap_base FIXME */
613 compat_int_t reserved[1];
614 };
615
616 static int serial_struct_ioctl(struct file *file,
617 unsigned cmd, struct serial_struct32 __user *ss32)
618 {
619 typedef struct serial_struct32 SS32;
620 int err;
621 struct serial_struct __user *ss = compat_alloc_user_space(sizeof(*ss));
622 __u32 udata;
623 unsigned int base;
624 unsigned char *iomem_base;
625
626 if (ss == NULL)
627 return -EFAULT;
628 if (cmd == TIOCSSERIAL) {
629 if (copy_in_user(ss, ss32, offsetof(SS32, iomem_base)) ||
630 get_user(udata, &ss32->iomem_base))
631 return -EFAULT;
632 iomem_base = compat_ptr(udata);
633 if (put_user(iomem_base, &ss->iomem_base) ||
634 convert_in_user(&ss32->iomem_reg_shift,
635 &ss->iomem_reg_shift) ||
636 convert_in_user(&ss32->port_high, &ss->port_high) ||
637 put_user(0UL, &ss->iomap_base))
638 return -EFAULT;
639 }
640 err = do_ioctl(file, cmd, (unsigned long)ss);
641 if (cmd == TIOCGSERIAL && err >= 0) {
642 if (copy_in_user(ss32, ss, offsetof(SS32, iomem_base)) ||
643 get_user(iomem_base, &ss->iomem_base))
644 return -EFAULT;
645 base = (unsigned long)iomem_base >> 32 ?
646 0xffffffff : (unsigned)(unsigned long)iomem_base;
647 if (put_user(base, &ss32->iomem_base) ||
648 convert_in_user(&ss->iomem_reg_shift,
649 &ss32->iomem_reg_shift) ||
650 convert_in_user(&ss->port_high, &ss32->port_high))
651 return -EFAULT;
652 }
653 return err;
654 }
655
656 #define RTC_IRQP_READ32 _IOR('p', 0x0b, compat_ulong_t)
657 #define RTC_IRQP_SET32 _IOW('p', 0x0c, compat_ulong_t)
658 #define RTC_EPOCH_READ32 _IOR('p', 0x0d, compat_ulong_t)
659 #define RTC_EPOCH_SET32 _IOW('p', 0x0e, compat_ulong_t)
660
661 static int rtc_ioctl(struct file *file,
662 unsigned cmd, void __user *argp)
663 {
664 unsigned long __user *valp = compat_alloc_user_space(sizeof(*valp));
665 int ret;
666
667 if (valp == NULL)
668 return -EFAULT;
669 switch (cmd) {
670 case RTC_IRQP_READ32:
671 case RTC_EPOCH_READ32:
672 ret = do_ioctl(file, (cmd == RTC_IRQP_READ32) ?
673 RTC_IRQP_READ : RTC_EPOCH_READ,
674 (unsigned long)valp);
675 if (ret)
676 return ret;
677 return convert_in_user(valp, (unsigned int __user *)argp);
678 case RTC_IRQP_SET32:
679 return do_ioctl(file, RTC_IRQP_SET, (unsigned long)argp);
680 case RTC_EPOCH_SET32:
681 return do_ioctl(file, RTC_EPOCH_SET, (unsigned long)argp);
682 }
683
684 return -ENOIOCTLCMD;
685 }
686
687 /* on ia32 l_start is on a 32-bit boundary */
688 #if defined(CONFIG_IA64) || defined(CONFIG_X86_64)
689 struct space_resv_32 {
690 __s16 l_type;
691 __s16 l_whence;
692 __s64 l_start __attribute__((packed));
693 /* len == 0 means until end of file */
694 __s64 l_len __attribute__((packed));
695 __s32 l_sysid;
696 __u32 l_pid;
697 __s32 l_pad[4]; /* reserve area */
698 };
699
700 #define FS_IOC_RESVSP_32 _IOW ('X', 40, struct space_resv_32)
701 #define FS_IOC_RESVSP64_32 _IOW ('X', 42, struct space_resv_32)
702
703 /* just account for different alignment */
704 static int compat_ioctl_preallocate(struct file *file,
705 struct space_resv_32 __user *p32)
706 {
707 struct space_resv __user *p = compat_alloc_user_space(sizeof(*p));
708
709 if (copy_in_user(&p->l_type, &p32->l_type, sizeof(s16)) ||
710 copy_in_user(&p->l_whence, &p32->l_whence, sizeof(s16)) ||
711 copy_in_user(&p->l_start, &p32->l_start, sizeof(s64)) ||
712 copy_in_user(&p->l_len, &p32->l_len, sizeof(s64)) ||
713 copy_in_user(&p->l_sysid, &p32->l_sysid, sizeof(s32)) ||
714 copy_in_user(&p->l_pid, &p32->l_pid, sizeof(u32)) ||
715 copy_in_user(&p->l_pad, &p32->l_pad, 4*sizeof(u32)))
716 return -EFAULT;
717
718 return ioctl_preallocate(file, p);
719 }
720 #endif
721
722 /*
723 * simple reversible transform to make our table more evenly
724 * distributed after sorting.
725 */
726 #define XFORM(i) (((i) ^ ((i) << 27) ^ ((i) << 17)) & 0xffffffff)
727
728 #define COMPATIBLE_IOCTL(cmd) XFORM((u32)cmd),
729 /* ioctl should not be warned about even if it's not implemented.
730 Valid reasons to use this:
731 - It is implemented with ->compat_ioctl on some device, but programs
732 call it on others too.
733 - The ioctl is not implemented in the native kernel, but programs
734 call it commonly anyways.
735 Most other reasons are not valid. */
736 #define IGNORE_IOCTL(cmd) COMPATIBLE_IOCTL(cmd)
737
738 static unsigned int ioctl_pointer[] = {
739 /* compatible ioctls first */
740 COMPATIBLE_IOCTL(0x4B50) /* KDGHWCLK - not in the kernel, but don't complain */
741 COMPATIBLE_IOCTL(0x4B51) /* KDSHWCLK - not in the kernel, but don't complain */
742
743 /* Big T */
744 COMPATIBLE_IOCTL(TCGETA)
745 COMPATIBLE_IOCTL(TCSETA)
746 COMPATIBLE_IOCTL(TCSETAW)
747 COMPATIBLE_IOCTL(TCSETAF)
748 COMPATIBLE_IOCTL(TCSBRK)
749 COMPATIBLE_IOCTL(TCXONC)
750 COMPATIBLE_IOCTL(TCFLSH)
751 COMPATIBLE_IOCTL(TCGETS)
752 COMPATIBLE_IOCTL(TCSETS)
753 COMPATIBLE_IOCTL(TCSETSW)
754 COMPATIBLE_IOCTL(TCSETSF)
755 COMPATIBLE_IOCTL(TIOCLINUX)
756 COMPATIBLE_IOCTL(TIOCSBRK)
757 COMPATIBLE_IOCTL(TIOCGDEV)
758 COMPATIBLE_IOCTL(TIOCCBRK)
759 COMPATIBLE_IOCTL(TIOCGSID)
760 COMPATIBLE_IOCTL(TIOCGICOUNT)
761 COMPATIBLE_IOCTL(TIOCGEXCL)
762 /* Little t */
763 COMPATIBLE_IOCTL(TIOCGETD)
764 COMPATIBLE_IOCTL(TIOCSETD)
765 COMPATIBLE_IOCTL(TIOCEXCL)
766 COMPATIBLE_IOCTL(TIOCNXCL)
767 COMPATIBLE_IOCTL(TIOCCONS)
768 COMPATIBLE_IOCTL(TIOCGSOFTCAR)
769 COMPATIBLE_IOCTL(TIOCSSOFTCAR)
770 COMPATIBLE_IOCTL(TIOCSWINSZ)
771 COMPATIBLE_IOCTL(TIOCGWINSZ)
772 COMPATIBLE_IOCTL(TIOCMGET)
773 COMPATIBLE_IOCTL(TIOCMBIC)
774 COMPATIBLE_IOCTL(TIOCMBIS)
775 COMPATIBLE_IOCTL(TIOCMSET)
776 COMPATIBLE_IOCTL(TIOCNOTTY)
777 COMPATIBLE_IOCTL(TIOCSTI)
778 COMPATIBLE_IOCTL(TIOCOUTQ)
779 COMPATIBLE_IOCTL(TIOCSPGRP)
780 COMPATIBLE_IOCTL(TIOCGPGRP)
781 COMPATIBLE_IOCTL(TIOCSERGETLSR)
782 #ifdef TIOCSRS485
783 COMPATIBLE_IOCTL(TIOCSRS485)
784 #endif
785 #ifdef TIOCGRS485
786 COMPATIBLE_IOCTL(TIOCGRS485)
787 #endif
788 #ifdef TCGETS2
789 COMPATIBLE_IOCTL(TCGETS2)
790 COMPATIBLE_IOCTL(TCSETS2)
791 COMPATIBLE_IOCTL(TCSETSW2)
792 COMPATIBLE_IOCTL(TCSETSF2)
793 #endif
794 /* Little f */
795 COMPATIBLE_IOCTL(FIOCLEX)
796 COMPATIBLE_IOCTL(FIONCLEX)
797 COMPATIBLE_IOCTL(FIOASYNC)
798 COMPATIBLE_IOCTL(FIONBIO)
799 COMPATIBLE_IOCTL(FIONREAD) /* This is also TIOCINQ */
800 COMPATIBLE_IOCTL(FS_IOC_FIEMAP)
801 /* 0x00 */
802 COMPATIBLE_IOCTL(FIBMAP)
803 COMPATIBLE_IOCTL(FIGETBSZ)
804 /* 'X' - originally XFS but some now in the VFS */
805 COMPATIBLE_IOCTL(FIFREEZE)
806 COMPATIBLE_IOCTL(FITHAW)
807 COMPATIBLE_IOCTL(FITRIM)
808 COMPATIBLE_IOCTL(KDGETKEYCODE)
809 COMPATIBLE_IOCTL(KDSETKEYCODE)
810 COMPATIBLE_IOCTL(KDGKBTYPE)
811 COMPATIBLE_IOCTL(KDGETMODE)
812 COMPATIBLE_IOCTL(KDGKBMODE)
813 COMPATIBLE_IOCTL(KDGKBMETA)
814 COMPATIBLE_IOCTL(KDGKBENT)
815 COMPATIBLE_IOCTL(KDSKBENT)
816 COMPATIBLE_IOCTL(KDGKBSENT)
817 COMPATIBLE_IOCTL(KDSKBSENT)
818 COMPATIBLE_IOCTL(KDGKBDIACR)
819 COMPATIBLE_IOCTL(KDSKBDIACR)
820 COMPATIBLE_IOCTL(KDGKBDIACRUC)
821 COMPATIBLE_IOCTL(KDSKBDIACRUC)
822 COMPATIBLE_IOCTL(KDKBDREP)
823 COMPATIBLE_IOCTL(KDGKBLED)
824 COMPATIBLE_IOCTL(KDGETLED)
825 #ifdef CONFIG_BLOCK
826 /* Big S */
827 COMPATIBLE_IOCTL(SCSI_IOCTL_GET_IDLUN)
828 COMPATIBLE_IOCTL(SCSI_IOCTL_DOORLOCK)
829 COMPATIBLE_IOCTL(SCSI_IOCTL_DOORUNLOCK)
830 COMPATIBLE_IOCTL(SCSI_IOCTL_TEST_UNIT_READY)
831 COMPATIBLE_IOCTL(SCSI_IOCTL_GET_BUS_NUMBER)
832 COMPATIBLE_IOCTL(SCSI_IOCTL_SEND_COMMAND)
833 COMPATIBLE_IOCTL(SCSI_IOCTL_PROBE_HOST)
834 COMPATIBLE_IOCTL(SCSI_IOCTL_GET_PCI)
835 #endif
836 /* Big V (don't complain on serial console) */
837 IGNORE_IOCTL(VT_OPENQRY)
838 IGNORE_IOCTL(VT_GETMODE)
839 /* Little p (/dev/rtc, /dev/envctrl, etc.) */
840 COMPATIBLE_IOCTL(RTC_AIE_ON)
841 COMPATIBLE_IOCTL(RTC_AIE_OFF)
842 COMPATIBLE_IOCTL(RTC_UIE_ON)
843 COMPATIBLE_IOCTL(RTC_UIE_OFF)
844 COMPATIBLE_IOCTL(RTC_PIE_ON)
845 COMPATIBLE_IOCTL(RTC_PIE_OFF)
846 COMPATIBLE_IOCTL(RTC_WIE_ON)
847 COMPATIBLE_IOCTL(RTC_WIE_OFF)
848 COMPATIBLE_IOCTL(RTC_ALM_SET)
849 COMPATIBLE_IOCTL(RTC_ALM_READ)
850 COMPATIBLE_IOCTL(RTC_RD_TIME)
851 COMPATIBLE_IOCTL(RTC_SET_TIME)
852 COMPATIBLE_IOCTL(RTC_WKALM_SET)
853 COMPATIBLE_IOCTL(RTC_WKALM_RD)
854 /*
855 * These two are only for the sbus rtc driver, but
856 * hwclock tries them on every rtc device first when
857 * running on sparc. On other architectures the entries
858 * are useless but harmless.
859 */
860 COMPATIBLE_IOCTL(_IOR('p', 20, int[7])) /* RTCGET */
861 COMPATIBLE_IOCTL(_IOW('p', 21, int[7])) /* RTCSET */
862 /* Little m */
863 COMPATIBLE_IOCTL(MTIOCTOP)
864 /* Socket level stuff */
865 COMPATIBLE_IOCTL(FIOQSIZE)
866 #ifdef CONFIG_BLOCK
867 /* md calls this on random blockdevs */
868 IGNORE_IOCTL(RAID_VERSION)
869 /* qemu/qemu-img might call these two on plain files for probing */
870 IGNORE_IOCTL(CDROM_DRIVE_STATUS)
871 IGNORE_IOCTL(FDGETPRM32)
872 /* SG stuff */
873 COMPATIBLE_IOCTL(SG_SET_TIMEOUT)
874 COMPATIBLE_IOCTL(SG_GET_TIMEOUT)
875 COMPATIBLE_IOCTL(SG_EMULATED_HOST)
876 COMPATIBLE_IOCTL(SG_GET_TRANSFORM)
877 COMPATIBLE_IOCTL(SG_SET_RESERVED_SIZE)
878 COMPATIBLE_IOCTL(SG_GET_RESERVED_SIZE)
879 COMPATIBLE_IOCTL(SG_GET_SCSI_ID)
880 COMPATIBLE_IOCTL(SG_SET_FORCE_LOW_DMA)
881 COMPATIBLE_IOCTL(SG_GET_LOW_DMA)
882 COMPATIBLE_IOCTL(SG_SET_FORCE_PACK_ID)
883 COMPATIBLE_IOCTL(SG_GET_PACK_ID)
884 COMPATIBLE_IOCTL(SG_GET_NUM_WAITING)
885 COMPATIBLE_IOCTL(SG_SET_DEBUG)
886 COMPATIBLE_IOCTL(SG_GET_SG_TABLESIZE)
887 COMPATIBLE_IOCTL(SG_GET_COMMAND_Q)
888 COMPATIBLE_IOCTL(SG_SET_COMMAND_Q)
889 COMPATIBLE_IOCTL(SG_GET_VERSION_NUM)
890 COMPATIBLE_IOCTL(SG_NEXT_CMD_LEN)
891 COMPATIBLE_IOCTL(SG_SCSI_RESET)
892 COMPATIBLE_IOCTL(SG_GET_REQUEST_TABLE)
893 COMPATIBLE_IOCTL(SG_SET_KEEP_ORPHAN)
894 COMPATIBLE_IOCTL(SG_GET_KEEP_ORPHAN)
895 #endif
896 /* PPP stuff */
897 COMPATIBLE_IOCTL(PPPIOCGFLAGS)
898 COMPATIBLE_IOCTL(PPPIOCSFLAGS)
899 COMPATIBLE_IOCTL(PPPIOCGASYNCMAP)
900 COMPATIBLE_IOCTL(PPPIOCSASYNCMAP)
901 COMPATIBLE_IOCTL(PPPIOCGUNIT)
902 COMPATIBLE_IOCTL(PPPIOCGRASYNCMAP)
903 COMPATIBLE_IOCTL(PPPIOCSRASYNCMAP)
904 COMPATIBLE_IOCTL(PPPIOCGMRU)
905 COMPATIBLE_IOCTL(PPPIOCSMRU)
906 COMPATIBLE_IOCTL(PPPIOCSMAXCID)
907 COMPATIBLE_IOCTL(PPPIOCGXASYNCMAP)
908 COMPATIBLE_IOCTL(PPPIOCSXASYNCMAP)
909 COMPATIBLE_IOCTL(PPPIOCXFERUNIT)
910 /* PPPIOCSCOMPRESS is translated */
911 COMPATIBLE_IOCTL(PPPIOCGNPMODE)
912 COMPATIBLE_IOCTL(PPPIOCSNPMODE)
913 COMPATIBLE_IOCTL(PPPIOCGDEBUG)
914 COMPATIBLE_IOCTL(PPPIOCSDEBUG)
915 /* PPPIOCSPASS is translated */
916 /* PPPIOCSACTIVE is translated */
917 /* PPPIOCGIDLE is translated */
918 COMPATIBLE_IOCTL(PPPIOCNEWUNIT)
919 COMPATIBLE_IOCTL(PPPIOCATTACH)
920 COMPATIBLE_IOCTL(PPPIOCDETACH)
921 COMPATIBLE_IOCTL(PPPIOCSMRRU)
922 COMPATIBLE_IOCTL(PPPIOCCONNECT)
923 COMPATIBLE_IOCTL(PPPIOCDISCONN)
924 COMPATIBLE_IOCTL(PPPIOCATTCHAN)
925 COMPATIBLE_IOCTL(PPPIOCGCHAN)
926 COMPATIBLE_IOCTL(PPPIOCGL2TPSTATS)
927 /* PPPOX */
928 COMPATIBLE_IOCTL(PPPOEIOCSFWD)
929 COMPATIBLE_IOCTL(PPPOEIOCDFWD)
930 /* Big A */
931 /* sparc only */
932 /* Big Q for sound/OSS */
933 COMPATIBLE_IOCTL(SNDCTL_SEQ_RESET)
934 COMPATIBLE_IOCTL(SNDCTL_SEQ_SYNC)
935 COMPATIBLE_IOCTL(SNDCTL_SYNTH_INFO)
936 COMPATIBLE_IOCTL(SNDCTL_SEQ_CTRLRATE)
937 COMPATIBLE_IOCTL(SNDCTL_SEQ_GETOUTCOUNT)
938 COMPATIBLE_IOCTL(SNDCTL_SEQ_GETINCOUNT)
939 COMPATIBLE_IOCTL(SNDCTL_SEQ_PERCMODE)
940 COMPATIBLE_IOCTL(SNDCTL_FM_LOAD_INSTR)
941 COMPATIBLE_IOCTL(SNDCTL_SEQ_TESTMIDI)
942 COMPATIBLE_IOCTL(SNDCTL_SEQ_RESETSAMPLES)
943 COMPATIBLE_IOCTL(SNDCTL_SEQ_NRSYNTHS)
944 COMPATIBLE_IOCTL(SNDCTL_SEQ_NRMIDIS)
945 COMPATIBLE_IOCTL(SNDCTL_MIDI_INFO)
946 COMPATIBLE_IOCTL(SNDCTL_SEQ_THRESHOLD)
947 COMPATIBLE_IOCTL(SNDCTL_SYNTH_MEMAVL)
948 COMPATIBLE_IOCTL(SNDCTL_FM_4OP_ENABLE)
949 COMPATIBLE_IOCTL(SNDCTL_SEQ_PANIC)
950 COMPATIBLE_IOCTL(SNDCTL_SEQ_OUTOFBAND)
951 COMPATIBLE_IOCTL(SNDCTL_SEQ_GETTIME)
952 COMPATIBLE_IOCTL(SNDCTL_SYNTH_ID)
953 COMPATIBLE_IOCTL(SNDCTL_SYNTH_CONTROL)
954 COMPATIBLE_IOCTL(SNDCTL_SYNTH_REMOVESAMPLE)
955 /* Big T for sound/OSS */
956 COMPATIBLE_IOCTL(SNDCTL_TMR_TIMEBASE)
957 COMPATIBLE_IOCTL(SNDCTL_TMR_START)
958 COMPATIBLE_IOCTL(SNDCTL_TMR_STOP)
959 COMPATIBLE_IOCTL(SNDCTL_TMR_CONTINUE)
960 COMPATIBLE_IOCTL(SNDCTL_TMR_TEMPO)
961 COMPATIBLE_IOCTL(SNDCTL_TMR_SOURCE)
962 COMPATIBLE_IOCTL(SNDCTL_TMR_METRONOME)
963 COMPATIBLE_IOCTL(SNDCTL_TMR_SELECT)
964 /* Little m for sound/OSS */
965 COMPATIBLE_IOCTL(SNDCTL_MIDI_PRETIME)
966 COMPATIBLE_IOCTL(SNDCTL_MIDI_MPUMODE)
967 COMPATIBLE_IOCTL(SNDCTL_MIDI_MPUCMD)
968 /* Big P for sound/OSS */
969 COMPATIBLE_IOCTL(SNDCTL_DSP_RESET)
970 COMPATIBLE_IOCTL(SNDCTL_DSP_SYNC)
971 COMPATIBLE_IOCTL(SNDCTL_DSP_SPEED)
972 COMPATIBLE_IOCTL(SNDCTL_DSP_STEREO)
973 COMPATIBLE_IOCTL(SNDCTL_DSP_GETBLKSIZE)
974 COMPATIBLE_IOCTL(SNDCTL_DSP_CHANNELS)
975 COMPATIBLE_IOCTL(SOUND_PCM_WRITE_FILTER)
976 COMPATIBLE_IOCTL(SNDCTL_DSP_POST)
977 COMPATIBLE_IOCTL(SNDCTL_DSP_SUBDIVIDE)
978 COMPATIBLE_IOCTL(SNDCTL_DSP_SETFRAGMENT)
979 COMPATIBLE_IOCTL(SNDCTL_DSP_GETFMTS)
980 COMPATIBLE_IOCTL(SNDCTL_DSP_SETFMT)
981 COMPATIBLE_IOCTL(SNDCTL_DSP_GETOSPACE)
982 COMPATIBLE_IOCTL(SNDCTL_DSP_GETISPACE)
983 COMPATIBLE_IOCTL(SNDCTL_DSP_NONBLOCK)
984 COMPATIBLE_IOCTL(SNDCTL_DSP_GETCAPS)
985 COMPATIBLE_IOCTL(SNDCTL_DSP_GETTRIGGER)
986 COMPATIBLE_IOCTL(SNDCTL_DSP_SETTRIGGER)
987 COMPATIBLE_IOCTL(SNDCTL_DSP_GETIPTR)
988 COMPATIBLE_IOCTL(SNDCTL_DSP_GETOPTR)
989 /* SNDCTL_DSP_MAPINBUF, XXX needs translation */
990 /* SNDCTL_DSP_MAPOUTBUF, XXX needs translation */
991 COMPATIBLE_IOCTL(SNDCTL_DSP_SETSYNCRO)
992 COMPATIBLE_IOCTL(SNDCTL_DSP_SETDUPLEX)
993 COMPATIBLE_IOCTL(SNDCTL_DSP_GETODELAY)
994 COMPATIBLE_IOCTL(SNDCTL_DSP_PROFILE)
995 COMPATIBLE_IOCTL(SOUND_PCM_READ_RATE)
996 COMPATIBLE_IOCTL(SOUND_PCM_READ_CHANNELS)
997 COMPATIBLE_IOCTL(SOUND_PCM_READ_BITS)
998 COMPATIBLE_IOCTL(SOUND_PCM_READ_FILTER)
999 /* Big C for sound/OSS */
1000 COMPATIBLE_IOCTL(SNDCTL_COPR_RESET)
1001 COMPATIBLE_IOCTL(SNDCTL_COPR_LOAD)
1002 COMPATIBLE_IOCTL(SNDCTL_COPR_RDATA)
1003 COMPATIBLE_IOCTL(SNDCTL_COPR_RCODE)
1004 COMPATIBLE_IOCTL(SNDCTL_COPR_WDATA)
1005 COMPATIBLE_IOCTL(SNDCTL_COPR_WCODE)
1006 COMPATIBLE_IOCTL(SNDCTL_COPR_RUN)
1007 COMPATIBLE_IOCTL(SNDCTL_COPR_HALT)
1008 COMPATIBLE_IOCTL(SNDCTL_COPR_SENDMSG)
1009 COMPATIBLE_IOCTL(SNDCTL_COPR_RCVMSG)
1010 /* Big M for sound/OSS */
1011 COMPATIBLE_IOCTL(SOUND_MIXER_READ_VOLUME)
1012 COMPATIBLE_IOCTL(SOUND_MIXER_READ_BASS)
1013 COMPATIBLE_IOCTL(SOUND_MIXER_READ_TREBLE)
1014 COMPATIBLE_IOCTL(SOUND_MIXER_READ_SYNTH)
1015 COMPATIBLE_IOCTL(SOUND_MIXER_READ_PCM)
1016 COMPATIBLE_IOCTL(SOUND_MIXER_READ_SPEAKER)
1017 COMPATIBLE_IOCTL(SOUND_MIXER_READ_LINE)
1018 COMPATIBLE_IOCTL(SOUND_MIXER_READ_MIC)
1019 COMPATIBLE_IOCTL(SOUND_MIXER_READ_CD)
1020 COMPATIBLE_IOCTL(SOUND_MIXER_READ_IMIX)
1021 COMPATIBLE_IOCTL(SOUND_MIXER_READ_ALTPCM)
1022 COMPATIBLE_IOCTL(SOUND_MIXER_READ_RECLEV)
1023 COMPATIBLE_IOCTL(SOUND_MIXER_READ_IGAIN)
1024 COMPATIBLE_IOCTL(SOUND_MIXER_READ_OGAIN)
1025 COMPATIBLE_IOCTL(SOUND_MIXER_READ_LINE1)
1026 COMPATIBLE_IOCTL(SOUND_MIXER_READ_LINE2)
1027 COMPATIBLE_IOCTL(SOUND_MIXER_READ_LINE3)
1028 COMPATIBLE_IOCTL(MIXER_READ(SOUND_MIXER_DIGITAL1))
1029 COMPATIBLE_IOCTL(MIXER_READ(SOUND_MIXER_DIGITAL2))
1030 COMPATIBLE_IOCTL(MIXER_READ(SOUND_MIXER_DIGITAL3))
1031 COMPATIBLE_IOCTL(MIXER_READ(SOUND_MIXER_PHONEIN))
1032 COMPATIBLE_IOCTL(MIXER_READ(SOUND_MIXER_PHONEOUT))
1033 COMPATIBLE_IOCTL(MIXER_READ(SOUND_MIXER_VIDEO))
1034 COMPATIBLE_IOCTL(MIXER_READ(SOUND_MIXER_RADIO))
1035 COMPATIBLE_IOCTL(MIXER_READ(SOUND_MIXER_MONITOR))
1036 COMPATIBLE_IOCTL(SOUND_MIXER_READ_MUTE)
1037 /* SOUND_MIXER_READ_ENHANCE, same value as READ_MUTE */
1038 /* SOUND_MIXER_READ_LOUD, same value as READ_MUTE */
1039 COMPATIBLE_IOCTL(SOUND_MIXER_READ_RECSRC)
1040 COMPATIBLE_IOCTL(SOUND_MIXER_READ_DEVMASK)
1041 COMPATIBLE_IOCTL(SOUND_MIXER_READ_RECMASK)
1042 COMPATIBLE_IOCTL(SOUND_MIXER_READ_STEREODEVS)
1043 COMPATIBLE_IOCTL(SOUND_MIXER_READ_CAPS)
1044 COMPATIBLE_IOCTL(SOUND_MIXER_WRITE_VOLUME)
1045 COMPATIBLE_IOCTL(SOUND_MIXER_WRITE_BASS)
1046 COMPATIBLE_IOCTL(SOUND_MIXER_WRITE_TREBLE)
1047 COMPATIBLE_IOCTL(SOUND_MIXER_WRITE_SYNTH)
1048 COMPATIBLE_IOCTL(SOUND_MIXER_WRITE_PCM)
1049 COMPATIBLE_IOCTL(SOUND_MIXER_WRITE_SPEAKER)
1050 COMPATIBLE_IOCTL(SOUND_MIXER_WRITE_LINE)
1051 COMPATIBLE_IOCTL(SOUND_MIXER_WRITE_MIC)
1052 COMPATIBLE_IOCTL(SOUND_MIXER_WRITE_CD)
1053 COMPATIBLE_IOCTL(SOUND_MIXER_WRITE_IMIX)
1054 COMPATIBLE_IOCTL(SOUND_MIXER_WRITE_ALTPCM)
1055 COMPATIBLE_IOCTL(SOUND_MIXER_WRITE_RECLEV)
1056 COMPATIBLE_IOCTL(SOUND_MIXER_WRITE_IGAIN)
1057 COMPATIBLE_IOCTL(SOUND_MIXER_WRITE_OGAIN)
1058 COMPATIBLE_IOCTL(SOUND_MIXER_WRITE_LINE1)
1059 COMPATIBLE_IOCTL(SOUND_MIXER_WRITE_LINE2)
1060 COMPATIBLE_IOCTL(SOUND_MIXER_WRITE_LINE3)
1061 COMPATIBLE_IOCTL(MIXER_WRITE(SOUND_MIXER_DIGITAL1))
1062 COMPATIBLE_IOCTL(MIXER_WRITE(SOUND_MIXER_DIGITAL2))
1063 COMPATIBLE_IOCTL(MIXER_WRITE(SOUND_MIXER_DIGITAL3))
1064 COMPATIBLE_IOCTL(MIXER_WRITE(SOUND_MIXER_PHONEIN))
1065 COMPATIBLE_IOCTL(MIXER_WRITE(SOUND_MIXER_PHONEOUT))
1066 COMPATIBLE_IOCTL(MIXER_WRITE(SOUND_MIXER_VIDEO))
1067 COMPATIBLE_IOCTL(MIXER_WRITE(SOUND_MIXER_RADIO))
1068 COMPATIBLE_IOCTL(MIXER_WRITE(SOUND_MIXER_MONITOR))
1069 COMPATIBLE_IOCTL(SOUND_MIXER_WRITE_MUTE)
1070 /* SOUND_MIXER_WRITE_ENHANCE, same value as WRITE_MUTE */
1071 /* SOUND_MIXER_WRITE_LOUD, same value as WRITE_MUTE */
1072 COMPATIBLE_IOCTL(SOUND_MIXER_WRITE_RECSRC)
1073 COMPATIBLE_IOCTL(SOUND_MIXER_INFO)
1074 COMPATIBLE_IOCTL(SOUND_OLD_MIXER_INFO)
1075 COMPATIBLE_IOCTL(SOUND_MIXER_ACCESS)
1076 COMPATIBLE_IOCTL(SOUND_MIXER_AGC)
1077 COMPATIBLE_IOCTL(SOUND_MIXER_3DSE)
1078 COMPATIBLE_IOCTL(SOUND_MIXER_PRIVATE1)
1079 COMPATIBLE_IOCTL(SOUND_MIXER_PRIVATE2)
1080 COMPATIBLE_IOCTL(SOUND_MIXER_PRIVATE3)
1081 COMPATIBLE_IOCTL(SOUND_MIXER_PRIVATE4)
1082 COMPATIBLE_IOCTL(SOUND_MIXER_PRIVATE5)
1083 COMPATIBLE_IOCTL(SOUND_MIXER_GETLEVELS)
1084 COMPATIBLE_IOCTL(SOUND_MIXER_SETLEVELS)
1085 COMPATIBLE_IOCTL(OSS_GETVERSION)
1086 /* Raw devices */
1087 COMPATIBLE_IOCTL(RAW_SETBIND)
1088 COMPATIBLE_IOCTL(RAW_GETBIND)
1089 /* Watchdog */
1090 COMPATIBLE_IOCTL(WDIOC_GETSUPPORT)
1091 COMPATIBLE_IOCTL(WDIOC_GETSTATUS)
1092 COMPATIBLE_IOCTL(WDIOC_GETBOOTSTATUS)
1093 COMPATIBLE_IOCTL(WDIOC_GETTEMP)
1094 COMPATIBLE_IOCTL(WDIOC_SETOPTIONS)
1095 COMPATIBLE_IOCTL(WDIOC_KEEPALIVE)
1096 COMPATIBLE_IOCTL(WDIOC_SETTIMEOUT)
1097 COMPATIBLE_IOCTL(WDIOC_GETTIMEOUT)
1098 COMPATIBLE_IOCTL(WDIOC_SETPRETIMEOUT)
1099 COMPATIBLE_IOCTL(WDIOC_GETPRETIMEOUT)
1100 /* Big R */
1101 COMPATIBLE_IOCTL(RNDGETENTCNT)
1102 COMPATIBLE_IOCTL(RNDADDTOENTCNT)
1103 COMPATIBLE_IOCTL(RNDGETPOOL)
1104 COMPATIBLE_IOCTL(RNDADDENTROPY)
1105 COMPATIBLE_IOCTL(RNDZAPENTCNT)
1106 COMPATIBLE_IOCTL(RNDCLEARPOOL)
1107 /* Bluetooth */
1108 COMPATIBLE_IOCTL(HCIDEVUP)
1109 COMPATIBLE_IOCTL(HCIDEVDOWN)
1110 COMPATIBLE_IOCTL(HCIDEVRESET)
1111 COMPATIBLE_IOCTL(HCIDEVRESTAT)
1112 COMPATIBLE_IOCTL(HCIGETDEVLIST)
1113 COMPATIBLE_IOCTL(HCIGETDEVINFO)
1114 COMPATIBLE_IOCTL(HCIGETCONNLIST)
1115 COMPATIBLE_IOCTL(HCIGETCONNINFO)
1116 COMPATIBLE_IOCTL(HCIGETAUTHINFO)
1117 COMPATIBLE_IOCTL(HCISETRAW)
1118 COMPATIBLE_IOCTL(HCISETSCAN)
1119 COMPATIBLE_IOCTL(HCISETAUTH)
1120 COMPATIBLE_IOCTL(HCISETENCRYPT)
1121 COMPATIBLE_IOCTL(HCISETPTYPE)
1122 COMPATIBLE_IOCTL(HCISETLINKPOL)
1123 COMPATIBLE_IOCTL(HCISETLINKMODE)
1124 COMPATIBLE_IOCTL(HCISETACLMTU)
1125 COMPATIBLE_IOCTL(HCISETSCOMTU)
1126 COMPATIBLE_IOCTL(HCIBLOCKADDR)
1127 COMPATIBLE_IOCTL(HCIUNBLOCKADDR)
1128 COMPATIBLE_IOCTL(HCIINQUIRY)
1129 COMPATIBLE_IOCTL(HCIUARTSETPROTO)
1130 COMPATIBLE_IOCTL(HCIUARTGETPROTO)
1131 COMPATIBLE_IOCTL(HCIUARTGETDEVICE)
1132 COMPATIBLE_IOCTL(HCIUARTSETFLAGS)
1133 COMPATIBLE_IOCTL(HCIUARTGETFLAGS)
1134 COMPATIBLE_IOCTL(RFCOMMCREATEDEV)
1135 COMPATIBLE_IOCTL(RFCOMMRELEASEDEV)
1136 COMPATIBLE_IOCTL(RFCOMMGETDEVLIST)
1137 COMPATIBLE_IOCTL(RFCOMMGETDEVINFO)
1138 COMPATIBLE_IOCTL(RFCOMMSTEALDLC)
1139 COMPATIBLE_IOCTL(BNEPCONNADD)
1140 COMPATIBLE_IOCTL(BNEPCONNDEL)
1141 COMPATIBLE_IOCTL(BNEPGETCONNLIST)
1142 COMPATIBLE_IOCTL(BNEPGETCONNINFO)
1143 COMPATIBLE_IOCTL(BNEPGETSUPPFEAT)
1144 COMPATIBLE_IOCTL(CMTPCONNADD)
1145 COMPATIBLE_IOCTL(CMTPCONNDEL)
1146 COMPATIBLE_IOCTL(CMTPGETCONNLIST)
1147 COMPATIBLE_IOCTL(CMTPGETCONNINFO)
1148 COMPATIBLE_IOCTL(HIDPCONNADD)
1149 COMPATIBLE_IOCTL(HIDPCONNDEL)
1150 COMPATIBLE_IOCTL(HIDPGETCONNLIST)
1151 COMPATIBLE_IOCTL(HIDPGETCONNINFO)
1152 /* CAPI */
1153 COMPATIBLE_IOCTL(CAPI_REGISTER)
1154 COMPATIBLE_IOCTL(CAPI_GET_MANUFACTURER)
1155 COMPATIBLE_IOCTL(CAPI_GET_VERSION)
1156 COMPATIBLE_IOCTL(CAPI_GET_SERIAL)
1157 COMPATIBLE_IOCTL(CAPI_GET_PROFILE)
1158 COMPATIBLE_IOCTL(CAPI_MANUFACTURER_CMD)
1159 COMPATIBLE_IOCTL(CAPI_GET_ERRCODE)
1160 COMPATIBLE_IOCTL(CAPI_INSTALLED)
1161 COMPATIBLE_IOCTL(CAPI_GET_FLAGS)
1162 COMPATIBLE_IOCTL(CAPI_SET_FLAGS)
1163 COMPATIBLE_IOCTL(CAPI_CLR_FLAGS)
1164 COMPATIBLE_IOCTL(CAPI_NCCI_OPENCOUNT)
1165 COMPATIBLE_IOCTL(CAPI_NCCI_GETUNIT)
1166 /* Siemens Gigaset */
1167 COMPATIBLE_IOCTL(GIGASET_REDIR)
1168 COMPATIBLE_IOCTL(GIGASET_CONFIG)
1169 COMPATIBLE_IOCTL(GIGASET_BRKCHARS)
1170 COMPATIBLE_IOCTL(GIGASET_VERSION)
1171 /* Misc. */
1172 COMPATIBLE_IOCTL(0x41545900) /* ATYIO_CLKR */
1173 COMPATIBLE_IOCTL(0x41545901) /* ATYIO_CLKW */
1174 COMPATIBLE_IOCTL(PCIIOC_CONTROLLER)
1175 COMPATIBLE_IOCTL(PCIIOC_MMAP_IS_IO)
1176 COMPATIBLE_IOCTL(PCIIOC_MMAP_IS_MEM)
1177 COMPATIBLE_IOCTL(PCIIOC_WRITE_COMBINE)
1178 /* hiddev */
1179 COMPATIBLE_IOCTL(HIDIOCGVERSION)
1180 COMPATIBLE_IOCTL(HIDIOCAPPLICATION)
1181 COMPATIBLE_IOCTL(HIDIOCGDEVINFO)
1182 COMPATIBLE_IOCTL(HIDIOCGSTRING)
1183 COMPATIBLE_IOCTL(HIDIOCINITREPORT)
1184 COMPATIBLE_IOCTL(HIDIOCGREPORT)
1185 COMPATIBLE_IOCTL(HIDIOCSREPORT)
1186 COMPATIBLE_IOCTL(HIDIOCGREPORTINFO)
1187 COMPATIBLE_IOCTL(HIDIOCGFIELDINFO)
1188 COMPATIBLE_IOCTL(HIDIOCGUSAGE)
1189 COMPATIBLE_IOCTL(HIDIOCSUSAGE)
1190 COMPATIBLE_IOCTL(HIDIOCGUCODE)
1191 COMPATIBLE_IOCTL(HIDIOCGFLAG)
1192 COMPATIBLE_IOCTL(HIDIOCSFLAG)
1193 COMPATIBLE_IOCTL(HIDIOCGCOLLECTIONINDEX)
1194 COMPATIBLE_IOCTL(HIDIOCGCOLLECTIONINFO)
1195 /* dvb */
1196 COMPATIBLE_IOCTL(AUDIO_STOP)
1197 COMPATIBLE_IOCTL(AUDIO_PLAY)
1198 COMPATIBLE_IOCTL(AUDIO_PAUSE)
1199 COMPATIBLE_IOCTL(AUDIO_CONTINUE)
1200 COMPATIBLE_IOCTL(AUDIO_SELECT_SOURCE)
1201 COMPATIBLE_IOCTL(AUDIO_SET_MUTE)
1202 COMPATIBLE_IOCTL(AUDIO_SET_AV_SYNC)
1203 COMPATIBLE_IOCTL(AUDIO_SET_BYPASS_MODE)
1204 COMPATIBLE_IOCTL(AUDIO_CHANNEL_SELECT)
1205 COMPATIBLE_IOCTL(AUDIO_GET_STATUS)
1206 COMPATIBLE_IOCTL(AUDIO_GET_CAPABILITIES)
1207 COMPATIBLE_IOCTL(AUDIO_CLEAR_BUFFER)
1208 COMPATIBLE_IOCTL(AUDIO_SET_ID)
1209 COMPATIBLE_IOCTL(AUDIO_SET_MIXER)
1210 COMPATIBLE_IOCTL(AUDIO_SET_STREAMTYPE)
1211 COMPATIBLE_IOCTL(AUDIO_SET_EXT_ID)
1212 COMPATIBLE_IOCTL(AUDIO_SET_ATTRIBUTES)
1213 COMPATIBLE_IOCTL(AUDIO_SET_KARAOKE)
1214 COMPATIBLE_IOCTL(DMX_START)
1215 COMPATIBLE_IOCTL(DMX_STOP)
1216 COMPATIBLE_IOCTL(DMX_SET_FILTER)
1217 COMPATIBLE_IOCTL(DMX_SET_PES_FILTER)
1218 COMPATIBLE_IOCTL(DMX_SET_BUFFER_SIZE)
1219 COMPATIBLE_IOCTL(DMX_GET_PES_PIDS)
1220 COMPATIBLE_IOCTL(DMX_GET_STC)
1221 COMPATIBLE_IOCTL(FE_GET_INFO)
1222 COMPATIBLE_IOCTL(FE_DISEQC_RESET_OVERLOAD)
1223 COMPATIBLE_IOCTL(FE_DISEQC_SEND_MASTER_CMD)
1224 COMPATIBLE_IOCTL(FE_DISEQC_RECV_SLAVE_REPLY)
1225 COMPATIBLE_IOCTL(FE_DISEQC_SEND_BURST)
1226 COMPATIBLE_IOCTL(FE_SET_TONE)
1227 COMPATIBLE_IOCTL(FE_SET_VOLTAGE)
1228 COMPATIBLE_IOCTL(FE_ENABLE_HIGH_LNB_VOLTAGE)
1229 COMPATIBLE_IOCTL(FE_READ_STATUS)
1230 COMPATIBLE_IOCTL(FE_READ_BER)
1231 COMPATIBLE_IOCTL(FE_READ_SIGNAL_STRENGTH)
1232 COMPATIBLE_IOCTL(FE_READ_SNR)
1233 COMPATIBLE_IOCTL(FE_READ_UNCORRECTED_BLOCKS)
1234 COMPATIBLE_IOCTL(FE_SET_FRONTEND)
1235 COMPATIBLE_IOCTL(FE_GET_FRONTEND)
1236 COMPATIBLE_IOCTL(FE_GET_EVENT)
1237 COMPATIBLE_IOCTL(FE_DISHNETWORK_SEND_LEGACY_CMD)
1238 COMPATIBLE_IOCTL(VIDEO_STOP)
1239 COMPATIBLE_IOCTL(VIDEO_PLAY)
1240 COMPATIBLE_IOCTL(VIDEO_FREEZE)
1241 COMPATIBLE_IOCTL(VIDEO_CONTINUE)
1242 COMPATIBLE_IOCTL(VIDEO_SELECT_SOURCE)
1243 COMPATIBLE_IOCTL(VIDEO_SET_BLANK)
1244 COMPATIBLE_IOCTL(VIDEO_GET_STATUS)
1245 COMPATIBLE_IOCTL(VIDEO_SET_DISPLAY_FORMAT)
1246 COMPATIBLE_IOCTL(VIDEO_FAST_FORWARD)
1247 COMPATIBLE_IOCTL(VIDEO_SLOWMOTION)
1248 COMPATIBLE_IOCTL(VIDEO_GET_CAPABILITIES)
1249 COMPATIBLE_IOCTL(VIDEO_CLEAR_BUFFER)
1250 COMPATIBLE_IOCTL(VIDEO_SET_ID)
1251 COMPATIBLE_IOCTL(VIDEO_SET_STREAMTYPE)
1252 COMPATIBLE_IOCTL(VIDEO_SET_FORMAT)
1253 COMPATIBLE_IOCTL(VIDEO_SET_SYSTEM)
1254 COMPATIBLE_IOCTL(VIDEO_SET_HIGHLIGHT)
1255 COMPATIBLE_IOCTL(VIDEO_SET_SPU)
1256 COMPATIBLE_IOCTL(VIDEO_GET_NAVI)
1257 COMPATIBLE_IOCTL(VIDEO_SET_ATTRIBUTES)
1258 COMPATIBLE_IOCTL(VIDEO_GET_SIZE)
1259 COMPATIBLE_IOCTL(VIDEO_GET_FRAME_RATE)
1260 /* cec */
1261 COMPATIBLE_IOCTL(CEC_ADAP_G_CAPS)
1262 COMPATIBLE_IOCTL(CEC_ADAP_G_LOG_ADDRS)
1263 COMPATIBLE_IOCTL(CEC_ADAP_S_LOG_ADDRS)
1264 COMPATIBLE_IOCTL(CEC_ADAP_G_PHYS_ADDR)
1265 COMPATIBLE_IOCTL(CEC_ADAP_S_PHYS_ADDR)
1266 COMPATIBLE_IOCTL(CEC_G_MODE)
1267 COMPATIBLE_IOCTL(CEC_S_MODE)
1268 COMPATIBLE_IOCTL(CEC_TRANSMIT)
1269 COMPATIBLE_IOCTL(CEC_RECEIVE)
1270 COMPATIBLE_IOCTL(CEC_DQEVENT)
1271
1272 /* joystick */
1273 COMPATIBLE_IOCTL(JSIOCGVERSION)
1274 COMPATIBLE_IOCTL(JSIOCGAXES)
1275 COMPATIBLE_IOCTL(JSIOCGBUTTONS)
1276 COMPATIBLE_IOCTL(JSIOCGNAME(0))
1277
1278 #ifdef TIOCGLTC
1279 COMPATIBLE_IOCTL(TIOCGLTC)
1280 COMPATIBLE_IOCTL(TIOCSLTC)
1281 #endif
1282 #ifdef TIOCSTART
1283 /*
1284 * For these two we have definitions in ioctls.h and/or termios.h on
1285 * some architectures but no actual implemention. Some applications
1286 * like bash call them if they are defined in the headers, so we provide
1287 * entries here to avoid syslog message spew.
1288 */
1289 COMPATIBLE_IOCTL(TIOCSTART)
1290 COMPATIBLE_IOCTL(TIOCSTOP)
1291 #endif
1292
1293 /* fat 'r' ioctls. These are handled by fat with ->compat_ioctl,
1294 but we don't want warnings on other file systems. So declare
1295 them as compatible here. */
1296 #define VFAT_IOCTL_READDIR_BOTH32 _IOR('r', 1, struct compat_dirent[2])
1297 #define VFAT_IOCTL_READDIR_SHORT32 _IOR('r', 2, struct compat_dirent[2])
1298
1299 IGNORE_IOCTL(VFAT_IOCTL_READDIR_BOTH32)
1300 IGNORE_IOCTL(VFAT_IOCTL_READDIR_SHORT32)
1301
1302 #ifdef CONFIG_SPARC
1303 /* Sparc framebuffers, handled in sbusfb_compat_ioctl() */
1304 IGNORE_IOCTL(FBIOGTYPE)
1305 IGNORE_IOCTL(FBIOSATTR)
1306 IGNORE_IOCTL(FBIOGATTR)
1307 IGNORE_IOCTL(FBIOSVIDEO)
1308 IGNORE_IOCTL(FBIOGVIDEO)
1309 IGNORE_IOCTL(FBIOSCURPOS)
1310 IGNORE_IOCTL(FBIOGCURPOS)
1311 IGNORE_IOCTL(FBIOGCURMAX)
1312 IGNORE_IOCTL(FBIOPUTCMAP32)
1313 IGNORE_IOCTL(FBIOGETCMAP32)
1314 IGNORE_IOCTL(FBIOSCURSOR32)
1315 IGNORE_IOCTL(FBIOGCURSOR32)
1316 #endif
1317 };
1318
1319 /*
1320 * Convert common ioctl arguments based on their command number
1321 *
1322 * Please do not add any code in here. Instead, implement
1323 * a compat_ioctl operation in the place that handleѕ the
1324 * ioctl for the native case.
1325 */
1326 static long do_ioctl_trans(unsigned int cmd,
1327 unsigned long arg, struct file *file)
1328 {
1329 void __user *argp = compat_ptr(arg);
1330
1331 switch (cmd) {
1332 case PPPIOCGIDLE32:
1333 return ppp_gidle(file, cmd, argp);
1334 case PPPIOCSCOMPRESS32:
1335 return ppp_scompress(file, cmd, argp);
1336 case PPPIOCSPASS32:
1337 case PPPIOCSACTIVE32:
1338 return ppp_sock_fprog_ioctl_trans(file, cmd, argp);
1339 #ifdef CONFIG_BLOCK
1340 case SG_IO:
1341 return sg_ioctl_trans(file, cmd, argp);
1342 case SG_GET_REQUEST_TABLE:
1343 return sg_grt_trans(file, cmd, argp);
1344 case MTIOCGET32:
1345 case MTIOCPOS32:
1346 return mt_ioctl_trans(file, cmd, argp);
1347 #endif
1348 /* Serial */
1349 case TIOCGSERIAL:
1350 case TIOCSSERIAL:
1351 return serial_struct_ioctl(file, cmd, argp);
1352 /* Not implemented in the native kernel */
1353 case RTC_IRQP_READ32:
1354 case RTC_IRQP_SET32:
1355 case RTC_EPOCH_READ32:
1356 case RTC_EPOCH_SET32:
1357 return rtc_ioctl(file, cmd, argp);
1358
1359 /* dvb */
1360 case VIDEO_GET_EVENT:
1361 return do_video_get_event(file, cmd, argp);
1362 case VIDEO_STILLPICTURE:
1363 return do_video_stillpicture(file, cmd, argp);
1364 case VIDEO_SET_SPU_PALETTE:
1365 return do_video_set_spu_palette(file, cmd, argp);
1366 }
1367
1368 /*
1369 * These take an integer instead of a pointer as 'arg',
1370 * so we must not do a compat_ptr() translation.
1371 */
1372 switch (cmd) {
1373 /* Big T */
1374 case TCSBRKP:
1375 case TIOCMIWAIT:
1376 case TIOCSCTTY:
1377 /* RAID */
1378 case HOT_REMOVE_DISK:
1379 case HOT_ADD_DISK:
1380 case SET_DISK_FAULTY:
1381 case SET_BITMAP_FILE:
1382 /* Big K */
1383 case KDSIGACCEPT:
1384 case KIOCSOUND:
1385 case KDMKTONE:
1386 case KDSETMODE:
1387 case KDSKBMODE:
1388 case KDSKBMETA:
1389 case KDSKBLED:
1390 case KDSETLED:
1391 return vfs_ioctl(file, cmd, arg);
1392 }
1393
1394 return -ENOIOCTLCMD;
1395 }
1396
1397 static int compat_ioctl_check_table(unsigned int xcmd)
1398 {
1399 int i;
1400 const int max = ARRAY_SIZE(ioctl_pointer) - 1;
1401
1402 BUILD_BUG_ON(max >= (1 << 16));
1403
1404 /* guess initial offset into table, assuming a
1405 normalized distribution */
1406 i = ((xcmd >> 16) * max) >> 16;
1407
1408 /* do linear search up first, until greater or equal */
1409 while (ioctl_pointer[i] < xcmd && i < max)
1410 i++;
1411
1412 /* then do linear search down */
1413 while (ioctl_pointer[i] > xcmd && i > 0)
1414 i--;
1415
1416 return ioctl_pointer[i] == xcmd;
1417 }
1418
1419 COMPAT_SYSCALL_DEFINE3(ioctl, unsigned int, fd, unsigned int, cmd,
1420 compat_ulong_t, arg32)
1421 {
1422 unsigned long arg = arg32;
1423 struct fd f = fdget(fd);
1424 int error = -EBADF;
1425 if (!f.file)
1426 goto out;
1427
1428 /* RED-PEN how should LSM module know it's handling 32bit? */
1429 error = security_file_ioctl(f.file, cmd, arg);
1430 if (error)
1431 goto out_fput;
1432
1433 /*
1434 * To allow the compat_ioctl handlers to be self contained
1435 * we need to check the common ioctls here first.
1436 * Just handle them with the standard handlers below.
1437 */
1438 switch (cmd) {
1439 case FIOCLEX:
1440 case FIONCLEX:
1441 case FIONBIO:
1442 case FIOASYNC:
1443 case FIOQSIZE:
1444 break;
1445
1446 #if defined(CONFIG_IA64) || defined(CONFIG_X86_64)
1447 case FS_IOC_RESVSP_32:
1448 case FS_IOC_RESVSP64_32:
1449 error = compat_ioctl_preallocate(f.file, compat_ptr(arg));
1450 goto out_fput;
1451 #else
1452 case FS_IOC_RESVSP:
1453 case FS_IOC_RESVSP64:
1454 error = ioctl_preallocate(f.file, compat_ptr(arg));
1455 goto out_fput;
1456 #endif
1457
1458 case FICLONE:
1459 case FICLONERANGE:
1460 case FIDEDUPERANGE:
1461 case FS_IOC_FIEMAP:
1462 goto do_ioctl;
1463
1464 case FIBMAP:
1465 case FIGETBSZ:
1466 case FIONREAD:
1467 if (S_ISREG(file_inode(f.file)->i_mode))
1468 break;
1469 /*FALL THROUGH*/
1470
1471 default:
1472 if (f.file->f_op->compat_ioctl) {
1473 error = f.file->f_op->compat_ioctl(f.file, cmd, arg);
1474 if (error != -ENOIOCTLCMD)
1475 goto out_fput;
1476 }
1477
1478 if (!f.file->f_op->unlocked_ioctl)
1479 goto do_ioctl;
1480 break;
1481 }
1482
1483 if (compat_ioctl_check_table(XFORM(cmd)))
1484 goto found_handler;
1485
1486 error = do_ioctl_trans(cmd, arg, f.file);
1487 if (error == -ENOIOCTLCMD)
1488 error = -ENOTTY;
1489
1490 goto out_fput;
1491
1492 found_handler:
1493 arg = (unsigned long)compat_ptr(arg);
1494 do_ioctl:
1495 error = do_vfs_ioctl(f.file, fd, cmd, arg);
1496 out_fput:
1497 fdput(f);
1498 out:
1499 return error;
1500 }
1501
1502 static int __init init_sys32_ioctl_cmp(const void *p, const void *q)
1503 {
1504 unsigned int a, b;
1505 a = *(unsigned int *)p;
1506 b = *(unsigned int *)q;
1507 if (a > b)
1508 return 1;
1509 if (a < b)
1510 return -1;
1511 return 0;
1512 }
1513
1514 static int __init init_sys32_ioctl(void)
1515 {
1516 sort(ioctl_pointer, ARRAY_SIZE(ioctl_pointer), sizeof(*ioctl_pointer),
1517 init_sys32_ioctl_cmp, NULL);
1518 return 0;
1519 }
1520 __initcall(init_sys32_ioctl);
Linux with added FPC-III support