Blame view
block/compat_ioctl.c
11.2 KB
b24413180 License cleanup: ... |
1 |
// SPDX-License-Identifier: GPL-2.0 |
f58c4c0a1 compat_ioctl: mov... |
2 3 4 5 6 7 |
#include <linux/blkdev.h> #include <linux/blkpg.h> #include <linux/blktrace_api.h> #include <linux/cdrom.h> #include <linux/compat.h> #include <linux/elevator.h> |
f58c4c0a1 compat_ioctl: mov... |
8 |
#include <linux/hdreg.h> |
755d02fcf compat_ioctl: blo... |
9 |
#include <linux/pr.h> |
5a0e3ad6a include cleanup: ... |
10 |
#include <linux/slab.h> |
f58c4c0a1 compat_ioctl: mov... |
11 |
#include <linux/syscalls.h> |
f58c4c0a1 compat_ioctl: mov... |
12 13 14 15 16 17 18 19 20 21 22 23 |
#include <linux/types.h> #include <linux/uaccess.h> static int compat_put_ushort(unsigned long arg, unsigned short val) { return put_user(val, (unsigned short __user *)compat_ptr(arg)); } static int compat_put_int(unsigned long arg, int val) { return put_user(val, (compat_int_t __user *)compat_ptr(arg)); } |
ac481c20e block: Topology i... |
24 25 26 27 |
static int compat_put_uint(unsigned long arg, unsigned int val) { return put_user(val, (compat_uint_t __user *)compat_ptr(arg)); } |
f58c4c0a1 compat_ioctl: mov... |
28 29 30 31 32 33 34 35 36 37 38 39 40 41 |
static int compat_put_long(unsigned long arg, long val) { return put_user(val, (compat_long_t __user *)compat_ptr(arg)); } static int compat_put_ulong(unsigned long arg, compat_ulong_t val) { return put_user(val, (compat_ulong_t __user *)compat_ptr(arg)); } static int compat_put_u64(unsigned long arg, u64 val) { return put_user(val, (compat_u64 __user *)compat_ptr(arg)); } |
9617db085 compat_ioctl: mov... |
42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 |
struct compat_hd_geometry { unsigned char heads; unsigned char sectors; unsigned short cylinders; u32 start; }; static int compat_hdio_getgeo(struct gendisk *disk, struct block_device *bdev, struct compat_hd_geometry __user *ugeo) { struct hd_geometry geo; int ret; if (!ugeo) return -EINVAL; if (!disk->fops->getgeo) return -ENOTTY; |
8b0d77f13 block/compat_ioct... |
59 |
memset(&geo, 0, sizeof(geo)); |
9617db085 compat_ioctl: mov... |
60 61 62 63 64 65 66 67 68 69 |
/* * We need to set the startsect first, the driver may * want to override it. */ geo.start = get_start_sect(bdev); ret = disk->fops->getgeo(bdev, &geo); if (ret) return ret; ret = copy_to_user(ugeo, &geo, 4); |
3ddc5b46a kernel-wide: fix ... |
70 |
ret |= put_user(geo.start, &ugeo->start); |
9617db085 compat_ioctl: mov... |
71 72 73 74 75 |
if (ret) ret = -EFAULT; return ret; } |
33c2dca49 [PATCH] trim file... |
76 77 |
static int compat_hdio_ioctl(struct block_device *bdev, fmode_t mode, unsigned int cmd, unsigned long arg) |
9617db085 compat_ioctl: mov... |
78 |
{ |
8363dae23 compat_hdio_ioctl... |
79 |
unsigned long __user *p; |
9617db085 compat_ioctl: mov... |
80 |
int error; |
30138384d compat_hdio_ioctl... |
81 |
p = compat_alloc_user_space(sizeof(unsigned long)); |
33c2dca49 [PATCH] trim file... |
82 |
error = __blkdev_driver_ioctl(bdev, mode, |
30138384d compat_hdio_ioctl... |
83 |
cmd, (unsigned long)p); |
9617db085 compat_ioctl: mov... |
84 |
if (error == 0) { |
30138384d compat_hdio_ioctl... |
85 86 87 |
unsigned int __user *uvp = compat_ptr(arg); unsigned long v; if (get_user(v, p) || put_user(v, uvp)) |
9617db085 compat_ioctl: mov... |
88 89 90 91 |
error = -EFAULT; } return error; } |
b3087cc4f compat_ioctl: mov... |
92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 |
struct compat_cdrom_read_audio { union cdrom_addr addr; u8 addr_format; compat_int_t nframes; compat_caddr_t buf; }; struct compat_cdrom_generic_command { unsigned char cmd[CDROM_PACKET_SIZE]; compat_caddr_t buffer; compat_uint_t buflen; compat_int_t stat; compat_caddr_t sense; unsigned char data_direction; compat_int_t quiet; compat_int_t timeout; compat_caddr_t reserved[1]; }; |
33c2dca49 [PATCH] trim file... |
110 111 |
static int compat_cdrom_read_audio(struct block_device *bdev, fmode_t mode, unsigned int cmd, unsigned long arg) |
b3087cc4f compat_ioctl: mov... |
112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 |
{ struct cdrom_read_audio __user *cdread_audio; struct compat_cdrom_read_audio __user *cdread_audio32; __u32 data; void __user *datap; cdread_audio = compat_alloc_user_space(sizeof(*cdread_audio)); cdread_audio32 = compat_ptr(arg); if (copy_in_user(&cdread_audio->addr, &cdread_audio32->addr, (sizeof(*cdread_audio32) - sizeof(compat_caddr_t)))) return -EFAULT; if (get_user(data, &cdread_audio32->buf)) return -EFAULT; datap = compat_ptr(data); if (put_user(datap, &cdread_audio->buf)) return -EFAULT; |
33c2dca49 [PATCH] trim file... |
132 |
return __blkdev_driver_ioctl(bdev, mode, cmd, |
b3087cc4f compat_ioctl: mov... |
133 134 |
(unsigned long)cdread_audio); } |
33c2dca49 [PATCH] trim file... |
135 136 |
static int compat_cdrom_generic_command(struct block_device *bdev, fmode_t mode, unsigned int cmd, unsigned long arg) |
b3087cc4f compat_ioctl: mov... |
137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 |
{ struct cdrom_generic_command __user *cgc; struct compat_cdrom_generic_command __user *cgc32; u32 data; unsigned char dir; int itmp; cgc = compat_alloc_user_space(sizeof(*cgc)); cgc32 = compat_ptr(arg); if (copy_in_user(&cgc->cmd, &cgc32->cmd, sizeof(cgc->cmd)) || get_user(data, &cgc32->buffer) || put_user(compat_ptr(data), &cgc->buffer) || copy_in_user(&cgc->buflen, &cgc32->buflen, (sizeof(unsigned int) + sizeof(int))) || get_user(data, &cgc32->sense) || put_user(compat_ptr(data), &cgc->sense) || get_user(dir, &cgc32->data_direction) || put_user(dir, &cgc->data_direction) || get_user(itmp, &cgc32->quiet) || put_user(itmp, &cgc->quiet) || get_user(itmp, &cgc32->timeout) || put_user(itmp, &cgc->timeout) || get_user(data, &cgc32->reserved[0]) || put_user(compat_ptr(data), &cgc->reserved[0])) return -EFAULT; |
33c2dca49 [PATCH] trim file... |
163 |
return __blkdev_driver_ioctl(bdev, mode, cmd, (unsigned long)cgc); |
b3087cc4f compat_ioctl: mov... |
164 |
} |
18cf7f872 compat_ioctl: mov... |
165 166 167 168 169 170 |
struct compat_blkpg_ioctl_arg { compat_int_t op; compat_int_t flags; compat_int_t datalen; compat_caddr_t data; }; |
56b26add0 [PATCH] kill the ... |
171 |
static int compat_blkpg_ioctl(struct block_device *bdev, fmode_t mode, |
18cf7f872 compat_ioctl: mov... |
172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 |
unsigned int cmd, struct compat_blkpg_ioctl_arg __user *ua32) { struct blkpg_ioctl_arg __user *a = compat_alloc_user_space(sizeof(*a)); compat_caddr_t udata; compat_int_t n; int err; err = get_user(n, &ua32->op); err |= put_user(n, &a->op); err |= get_user(n, &ua32->flags); err |= put_user(n, &a->flags); err |= get_user(n, &ua32->datalen); err |= put_user(n, &a->datalen); err |= get_user(udata, &ua32->data); err |= put_user(compat_ptr(udata), &a->data); if (err) return err; |
56b26add0 [PATCH] kill the ... |
189 |
return blkdev_ioctl(bdev, mode, cmd, (unsigned long)a); |
18cf7f872 compat_ioctl: mov... |
190 |
} |
f58c4c0a1 compat_ioctl: mov... |
191 192 193 |
#define BLKBSZGET_32 _IOR(0x12, 112, int) #define BLKBSZSET_32 _IOW(0x12, 113, int) #define BLKGETSIZE64_32 _IOR(0x12, 114, int) |
33c2dca49 [PATCH] trim file... |
194 195 |
static int compat_blkdev_driver_ioctl(struct block_device *bdev, fmode_t mode, unsigned cmd, unsigned long arg) |
7199d4cdd compat_ioctl: add... |
196 |
{ |
33013a881 compat_ioctl: fix... |
197 |
switch (cmd) { |
9617db085 compat_ioctl: mov... |
198 199 200 201 202 203 204 205 206 207 208 |
case HDIO_GET_UNMASKINTR: case HDIO_GET_MULTCOUNT: case HDIO_GET_KEEPSETTINGS: case HDIO_GET_32BIT: case HDIO_GET_NOWERR: case HDIO_GET_DMA: case HDIO_GET_NICE: case HDIO_GET_WCACHE: case HDIO_GET_ACOUSTIC: case HDIO_GET_ADDRESS: case HDIO_GET_BUSSTATE: |
33c2dca49 [PATCH] trim file... |
209 |
return compat_hdio_ioctl(bdev, mode, cmd, arg); |
b3087cc4f compat_ioctl: mov... |
210 |
case CDROMREADAUDIO: |
33c2dca49 [PATCH] trim file... |
211 |
return compat_cdrom_read_audio(bdev, mode, cmd, arg); |
b3087cc4f compat_ioctl: mov... |
212 |
case CDROM_SEND_PACKET: |
33c2dca49 [PATCH] trim file... |
213 |
return compat_cdrom_generic_command(bdev, mode, cmd, arg); |
b3087cc4f compat_ioctl: mov... |
214 |
|
7199d4cdd compat_ioctl: add... |
215 216 217 218 219 220 221 222 223 224 225 226 |
/* * No handler required for the ones below, we just need to * convert arg to a 64 bit pointer. */ case BLKSECTSET: /* * 0x03 -- HD/IDE ioctl's used by hdparm and friends. * Some need translations, these do not. */ case HDIO_GET_IDENTITY: case HDIO_DRIVE_TASK: case HDIO_DRIVE_CMD: |
7199d4cdd compat_ioctl: add... |
227 228 |
/* 0x330 is reserved -- it used to be HDIO_GETGEO_BIG */ case 0x330: |
7199d4cdd compat_ioctl: add... |
229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 |
/* CDROM stuff */ case CDROMPAUSE: case CDROMRESUME: case CDROMPLAYMSF: case CDROMPLAYTRKIND: case CDROMREADTOCHDR: case CDROMREADTOCENTRY: case CDROMSTOP: case CDROMSTART: case CDROMEJECT: case CDROMVOLCTRL: case CDROMSUBCHNL: case CDROMMULTISESSION: case CDROM_GET_MCN: case CDROMRESET: case CDROMVOLREAD: case CDROMSEEK: case CDROMPLAYBLK: case CDROMCLOSETRAY: case CDROM_DISC_STATUS: case CDROM_CHANGER_NSLOTS: case CDROM_GET_CAPABILITY: /* Ignore cdrom.h about these next 5 ioctls, they absolutely do * not take a struct cdrom_read, instead they take a struct cdrom_msf * which is compatible. */ case CDROMREADMODE2: case CDROMREADMODE1: case CDROMREADRAW: case CDROMREADCOOKED: case CDROMREADALL: /* DVD ioctls */ case DVD_READ_STRUCT: case DVD_WRITE_STRUCT: case DVD_AUTH: arg = (unsigned long)compat_ptr(arg); |
1c925604e [PATCH] Fix block... |
265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 |
/* These intepret arg as an unsigned long, not as a pointer, * so we must not do compat_ptr() conversion. */ case HDIO_SET_MULTCOUNT: case HDIO_SET_UNMASKINTR: case HDIO_SET_KEEPSETTINGS: case HDIO_SET_32BIT: case HDIO_SET_NOWERR: case HDIO_SET_DMA: case HDIO_SET_PIO_MODE: case HDIO_SET_NICE: case HDIO_SET_WCACHE: case HDIO_SET_ACOUSTIC: case HDIO_SET_BUSSTATE: case HDIO_SET_ADDRESS: case CDROMEJECT_SW: case CDROM_SET_OPTIONS: case CDROM_CLEAR_OPTIONS: case CDROM_SELECT_SPEED: case CDROM_SELECT_DISC: case CDROM_MEDIA_CHANGED: case CDROM_DRIVE_STATUS: case CDROM_LOCKDOOR: case CDROM_DEBUG: |
7199d4cdd compat_ioctl: add... |
288 289 290 291 292 |
break; default: /* unknown ioctl number */ return -ENOIOCTLCMD; } |
33c2dca49 [PATCH] trim file... |
293 |
return __blkdev_driver_ioctl(bdev, mode, cmd, arg); |
7199d4cdd compat_ioctl: add... |
294 |
} |
45048d096 [PATCH] get rid o... |
295 296 297 298 |
/* Most of the generic ioctls are handled in the normal fallback path. This assumes the blkdev's low level compat_ioctl always returns ENOIOCTLCMD for unknown ioctls. */ long compat_blkdev_ioctl(struct file *file, unsigned cmd, unsigned long arg) |
f58c4c0a1 compat_ioctl: mov... |
299 |
{ |
45048d096 [PATCH] get rid o... |
300 301 302 303 304 |
int ret = -ENOIOCTLCMD; struct inode *inode = file->f_mapping->host; struct block_device *bdev = inode->i_bdev; struct gendisk *disk = bdev->bd_disk; fmode_t mode = file->f_mode; |
45048d096 [PATCH] get rid o... |
305 |
loff_t size; |
63f264965 block: fix BLKSEC... |
306 |
unsigned int max_sectors; |
45048d096 [PATCH] get rid o... |
307 |
|
fd4ce1acd [PATCH 1/2] kill ... |
308 309 310 311 |
/* * O_NDELAY can be altered using fcntl(.., F_SETFL, ..), so we have * to updated it before every ioctl. */ |
45048d096 [PATCH] get rid o... |
312 |
if (file->f_flags & O_NDELAY) |
fd4ce1acd [PATCH 1/2] kill ... |
313 314 315 |
mode |= FMODE_NDELAY; else mode &= ~FMODE_NDELAY; |
f58c4c0a1 compat_ioctl: mov... |
316 317 |
switch (cmd) { |
45048d096 [PATCH] get rid o... |
318 319 |
case HDIO_GETGEO: return compat_hdio_getgeo(disk, bdev, compat_ptr(arg)); |
ac481c20e block: Topology i... |
320 321 322 323 324 325 326 327 |
case BLKPBSZGET: return compat_put_uint(arg, bdev_physical_block_size(bdev)); case BLKIOMIN: return compat_put_uint(arg, bdev_io_min(bdev)); case BLKIOOPT: return compat_put_uint(arg, bdev_io_opt(bdev)); case BLKALIGNOFF: return compat_put_int(arg, bdev_alignment_offset(bdev)); |
98262f276 block: Allow devi... |
328 |
case BLKDISCARDZEROES: |
48920ff2a block: remove the... |
329 |
return compat_put_uint(arg, 0); |
45048d096 [PATCH] get rid o... |
330 331 332 |
case BLKFLSBUF: case BLKROSET: case BLKDISCARD: |
8d57a98cc block: add secure... |
333 |
case BLKSECDISCARD: |
3b3a1814d block: provide co... |
334 |
case BLKZEROOUT: |
45048d096 [PATCH] get rid o... |
335 336 337 338 339 |
/* * the ones below are implemented in blkdev_locked_ioctl, * but we call blkdev_ioctl, which gets the lock for us */ case BLKRRPART: |
17d3c07aa compat_ioctl: blo... |
340 341 |
case BLKREPORTZONE: case BLKRESETZONE: |
247aca0b6 compat_ioctl: blo... |
342 343 |
case BLKGETZONESZ: case BLKGETNRZONES: |
56b26add0 [PATCH] kill the ... |
344 |
return blkdev_ioctl(bdev, mode, cmd, |
45048d096 [PATCH] get rid o... |
345 346 |
(unsigned long)compat_ptr(arg)); case BLKBSZSET_32: |
56b26add0 [PATCH] kill the ... |
347 |
return blkdev_ioctl(bdev, mode, BLKBSZSET, |
45048d096 [PATCH] get rid o... |
348 349 |
(unsigned long)compat_ptr(arg)); case BLKPG: |
56b26add0 [PATCH] kill the ... |
350 |
return compat_blkpg_ioctl(bdev, mode, cmd, compat_ptr(arg)); |
f58c4c0a1 compat_ioctl: mov... |
351 352 353 354 |
case BLKRAGET: case BLKFRAGET: if (!arg) return -EINVAL; |
f58c4c0a1 compat_ioctl: mov... |
355 |
return compat_put_long(arg, |
efa7c9f97 block: Get rid of... |
356 |
(bdev->bd_bdi->ra_pages * PAGE_SIZE) / 512); |
f58c4c0a1 compat_ioctl: mov... |
357 358 359 360 361 |
case BLKROGET: /* compatible */ return compat_put_int(arg, bdev_read_only(bdev) != 0); case BLKBSZGET_32: /* get the logical block size (cf. BLKSSZGET) */ return compat_put_int(arg, block_size(bdev)); case BLKSSZGET: /* get block device hardware sector size */ |
e1defc4ff block: Do away wi... |
362 |
return compat_put_int(arg, bdev_logical_block_size(bdev)); |
f58c4c0a1 compat_ioctl: mov... |
363 |
case BLKSECTGET: |
63f264965 block: fix BLKSEC... |
364 365 366 |
max_sectors = min_t(unsigned int, USHRT_MAX, queue_max_sectors(bdev_get_queue(bdev))); return compat_put_ushort(arg, max_sectors); |
ef00f59c9 block: Add BLKROT... |
367 368 369 |
case BLKROTATIONAL: return compat_put_ushort(arg, !blk_queue_nonrot(bdev_get_queue(bdev))); |
f58c4c0a1 compat_ioctl: mov... |
370 371 372 373 |
case BLKRASET: /* compatible, but no compat_ptr (!) */ case BLKFRASET: if (!capable(CAP_SYS_ADMIN)) return -EACCES; |
efa7c9f97 block: Get rid of... |
374 |
bdev->bd_bdi->ra_pages = (arg * 512) / PAGE_SIZE; |
f58c4c0a1 compat_ioctl: mov... |
375 376 |
return 0; case BLKGETSIZE: |
77304d2ab block: read i_siz... |
377 |
size = i_size_read(bdev->bd_inode); |
45048d096 [PATCH] get rid o... |
378 |
if ((size >> 9) > ~0UL) |
f58c4c0a1 compat_ioctl: mov... |
379 |
return -EFBIG; |
45048d096 [PATCH] get rid o... |
380 |
return compat_put_ulong(arg, size >> 9); |
f58c4c0a1 compat_ioctl: mov... |
381 382 |
case BLKGETSIZE64_32: |
77304d2ab block: read i_siz... |
383 |
return compat_put_u64(arg, i_size_read(bdev->bd_inode)); |
171044d44 compat_ioctl: han... |
384 385 |
case BLKTRACESETUP32: |
171044d44 compat_ioctl: han... |
386 387 388 |
case BLKTRACESTART: /* compatible */ case BLKTRACESTOP: /* compatible */ case BLKTRACETEARDOWN: /* compatible */ |
45048d096 [PATCH] get rid o... |
389 |
ret = blk_trace_ioctl(bdev, cmd, compat_ptr(arg)); |
7199d4cdd compat_ioctl: add... |
390 |
return ret; |
755d02fcf compat_ioctl: blo... |
391 392 393 394 395 396 397 398 |
case IOC_PR_REGISTER: case IOC_PR_RESERVE: case IOC_PR_RELEASE: case IOC_PR_PREEMPT: case IOC_PR_PREEMPT_ABORT: case IOC_PR_CLEAR: return blkdev_ioctl(bdev, mode, cmd, (unsigned long)compat_ptr(arg)); |
45048d096 [PATCH] get rid o... |
399 400 401 402 403 404 405 |
default: if (disk->fops->compat_ioctl) ret = disk->fops->compat_ioctl(bdev, mode, cmd, arg); if (ret == -ENOIOCTLCMD) ret = compat_blkdev_driver_ioctl(bdev, mode, cmd, arg); return ret; } |
f58c4c0a1 compat_ioctl: mov... |
406 |
} |