Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* $Id: ioctl32.c,v 1.5 2002/10/18 00:21:43 varenet Exp $ |
| 2 | * ioctl32.c: Conversion between 32bit and 64bit native ioctls. |
| 3 | * |
| 4 | * Copyright (C) 1997-2000 Jakub Jelinek (jakub@redhat.com) |
| 5 | * Copyright (C) 1998 Eddie C. Dost (ecd@skynet.be) |
| 6 | * |
| 7 | * These routines maintain argument size conversion between 32bit and 64bit |
| 8 | * ioctls. |
| 9 | */ |
| 10 | |
| 11 | #include <linux/syscalls.h> |
| 12 | |
| 13 | #define INCLUDES |
| 14 | #include "compat_ioctl.c" |
| 15 | |
| 16 | #include <asm/perf.h> |
| 17 | #include <asm/ioctls.h> |
| 18 | |
| 19 | #define CODE |
| 20 | #include "compat_ioctl.c" |
| 21 | |
| 22 | /* Use this to get at 32-bit user passed pointers. |
| 23 | See sys_sparc32.c for description about these. */ |
| 24 | #define A(__x) ((unsigned long)(__x)) |
| 25 | /* The same for use with copy_from_user() and copy_to_user(). */ |
| 26 | #define B(__x) ((void *)(unsigned long)(__x)) |
| 27 | |
| 28 | #if defined(CONFIG_DRM) || defined(CONFIG_DRM_MODULE) |
| 29 | /* This really belongs in include/linux/drm.h -DaveM */ |
| 30 | #include "../../../drivers/char/drm/drm.h" |
| 31 | |
| 32 | typedef struct drm32_version { |
| 33 | int version_major; /* Major version */ |
| 34 | int version_minor; /* Minor version */ |
| 35 | int version_patchlevel;/* Patch level */ |
| 36 | int name_len; /* Length of name buffer */ |
| 37 | u32 name; /* Name of driver */ |
| 38 | int date_len; /* Length of date buffer */ |
| 39 | u32 date; /* User-space buffer to hold date */ |
| 40 | int desc_len; /* Length of desc buffer */ |
| 41 | u32 desc; /* User-space buffer to hold desc */ |
| 42 | } drm32_version_t; |
| 43 | #define DRM32_IOCTL_VERSION DRM_IOWR(0x00, drm32_version_t) |
| 44 | |
| 45 | static int drm32_version(unsigned int fd, unsigned int cmd, unsigned long arg) |
| 46 | { |
| 47 | drm32_version_t *uversion = (drm32_version_t *)arg; |
| 48 | char *name_ptr, *date_ptr, *desc_ptr; |
| 49 | u32 tmp1, tmp2, tmp3; |
| 50 | drm_version_t kversion; |
| 51 | mm_segment_t old_fs; |
| 52 | int ret; |
| 53 | |
| 54 | memset(&kversion, 0, sizeof(kversion)); |
| 55 | if (get_user(kversion.name_len, &uversion->name_len) || |
| 56 | get_user(kversion.date_len, &uversion->date_len) || |
| 57 | get_user(kversion.desc_len, &uversion->desc_len) || |
| 58 | get_user(tmp1, &uversion->name) || |
| 59 | get_user(tmp2, &uversion->date) || |
| 60 | get_user(tmp3, &uversion->desc)) |
| 61 | return -EFAULT; |
| 62 | |
| 63 | name_ptr = (char *) A(tmp1); |
| 64 | date_ptr = (char *) A(tmp2); |
| 65 | desc_ptr = (char *) A(tmp3); |
| 66 | |
| 67 | ret = -ENOMEM; |
| 68 | if (kversion.name_len && name_ptr) { |
| 69 | kversion.name = kmalloc(kversion.name_len, GFP_KERNEL); |
| 70 | if (!kversion.name) |
| 71 | goto out; |
| 72 | } |
| 73 | if (kversion.date_len && date_ptr) { |
| 74 | kversion.date = kmalloc(kversion.date_len, GFP_KERNEL); |
| 75 | if (!kversion.date) |
| 76 | goto out; |
| 77 | } |
| 78 | if (kversion.desc_len && desc_ptr) { |
| 79 | kversion.desc = kmalloc(kversion.desc_len, GFP_KERNEL); |
| 80 | if (!kversion.desc) |
| 81 | goto out; |
| 82 | } |
| 83 | |
| 84 | old_fs = get_fs(); |
| 85 | set_fs(KERNEL_DS); |
| 86 | ret = sys_ioctl (fd, DRM_IOCTL_VERSION, (unsigned long)&kversion); |
| 87 | set_fs(old_fs); |
| 88 | |
| 89 | if (!ret) { |
| 90 | if ((kversion.name && |
| 91 | copy_to_user(name_ptr, kversion.name, kversion.name_len)) || |
| 92 | (kversion.date && |
| 93 | copy_to_user(date_ptr, kversion.date, kversion.date_len)) || |
| 94 | (kversion.desc && |
| 95 | copy_to_user(desc_ptr, kversion.desc, kversion.desc_len))) |
| 96 | ret = -EFAULT; |
| 97 | if (put_user(kversion.version_major, &uversion->version_major) || |
| 98 | put_user(kversion.version_minor, &uversion->version_minor) || |
| 99 | put_user(kversion.version_patchlevel, &uversion->version_patchlevel) || |
| 100 | put_user(kversion.name_len, &uversion->name_len) || |
| 101 | put_user(kversion.date_len, &uversion->date_len) || |
| 102 | put_user(kversion.desc_len, &uversion->desc_len)) |
| 103 | ret = -EFAULT; |
| 104 | } |
| 105 | |
| 106 | out: |
| 107 | if (kversion.name) |
| 108 | kfree(kversion.name); |
| 109 | if (kversion.date) |
| 110 | kfree(kversion.date); |
| 111 | if (kversion.desc) |
| 112 | kfree(kversion.desc); |
| 113 | return ret; |
| 114 | } |
| 115 | |
| 116 | typedef struct drm32_unique { |
| 117 | int unique_len; /* Length of unique */ |
| 118 | u32 unique; /* Unique name for driver instantiation */ |
| 119 | } drm32_unique_t; |
| 120 | #define DRM32_IOCTL_GET_UNIQUE DRM_IOWR(0x01, drm32_unique_t) |
| 121 | #define DRM32_IOCTL_SET_UNIQUE DRM_IOW( 0x10, drm32_unique_t) |
| 122 | |
| 123 | static int drm32_getsetunique(unsigned int fd, unsigned int cmd, unsigned long arg) |
| 124 | { |
| 125 | drm32_unique_t *uarg = (drm32_unique_t *)arg; |
| 126 | drm_unique_t karg; |
| 127 | mm_segment_t old_fs; |
| 128 | char *uptr; |
| 129 | u32 tmp; |
| 130 | int ret; |
| 131 | |
| 132 | if (get_user(karg.unique_len, &uarg->unique_len)) |
| 133 | return -EFAULT; |
| 134 | karg.unique = NULL; |
| 135 | |
| 136 | if (get_user(tmp, &uarg->unique)) |
| 137 | return -EFAULT; |
| 138 | |
| 139 | uptr = (char *) A(tmp); |
| 140 | |
| 141 | if (uptr) { |
| 142 | karg.unique = kmalloc(karg.unique_len, GFP_KERNEL); |
| 143 | if (!karg.unique) |
| 144 | return -ENOMEM; |
| 145 | if (cmd == DRM32_IOCTL_SET_UNIQUE && |
| 146 | copy_from_user(karg.unique, uptr, karg.unique_len)) { |
| 147 | kfree(karg.unique); |
| 148 | return -EFAULT; |
| 149 | } |
| 150 | } |
| 151 | |
| 152 | old_fs = get_fs(); |
| 153 | set_fs(KERNEL_DS); |
| 154 | if (cmd == DRM32_IOCTL_GET_UNIQUE) |
| 155 | ret = sys_ioctl (fd, DRM_IOCTL_GET_UNIQUE, (unsigned long)&karg); |
| 156 | else |
| 157 | ret = sys_ioctl (fd, DRM_IOCTL_SET_UNIQUE, (unsigned long)&karg); |
| 158 | set_fs(old_fs); |
| 159 | |
| 160 | if (!ret) { |
| 161 | if (cmd == DRM32_IOCTL_GET_UNIQUE && |
| 162 | uptr != NULL && |
| 163 | copy_to_user(uptr, karg.unique, karg.unique_len)) |
| 164 | ret = -EFAULT; |
| 165 | if (put_user(karg.unique_len, &uarg->unique_len)) |
| 166 | ret = -EFAULT; |
| 167 | } |
| 168 | |
| 169 | if (karg.unique != NULL) |
| 170 | kfree(karg.unique); |
| 171 | |
| 172 | return ret; |
| 173 | } |
| 174 | |
| 175 | typedef struct drm32_map { |
| 176 | u32 offset; /* Requested physical address (0 for SAREA)*/ |
| 177 | u32 size; /* Requested physical size (bytes) */ |
| 178 | drm_map_type_t type; /* Type of memory to map */ |
| 179 | drm_map_flags_t flags; /* Flags */ |
| 180 | u32 handle; /* User-space: "Handle" to pass to mmap */ |
| 181 | /* Kernel-space: kernel-virtual address */ |
| 182 | int mtrr; /* MTRR slot used */ |
| 183 | /* Private data */ |
| 184 | } drm32_map_t; |
| 185 | #define DRM32_IOCTL_ADD_MAP DRM_IOWR(0x15, drm32_map_t) |
| 186 | |
| 187 | static int drm32_addmap(unsigned int fd, unsigned int cmd, unsigned long arg) |
| 188 | { |
| 189 | drm32_map_t *uarg = (drm32_map_t *) arg; |
| 190 | drm_map_t karg; |
| 191 | mm_segment_t old_fs; |
| 192 | u32 tmp; |
| 193 | int ret; |
| 194 | |
| 195 | ret = get_user(karg.offset, &uarg->offset); |
| 196 | ret |= get_user(karg.size, &uarg->size); |
| 197 | ret |= get_user(karg.type, &uarg->type); |
| 198 | ret |= get_user(karg.flags, &uarg->flags); |
| 199 | ret |= get_user(tmp, &uarg->handle); |
| 200 | ret |= get_user(karg.mtrr, &uarg->mtrr); |
| 201 | if (ret) |
| 202 | return -EFAULT; |
| 203 | |
| 204 | karg.handle = (void *) A(tmp); |
| 205 | |
| 206 | old_fs = get_fs(); |
| 207 | set_fs(KERNEL_DS); |
| 208 | ret = sys_ioctl(fd, DRM_IOCTL_ADD_MAP, (unsigned long) &karg); |
| 209 | set_fs(old_fs); |
| 210 | |
| 211 | if (!ret) { |
| 212 | ret = put_user(karg.offset, &uarg->offset); |
| 213 | ret |= put_user(karg.size, &uarg->size); |
| 214 | ret |= put_user(karg.type, &uarg->type); |
| 215 | ret |= put_user(karg.flags, &uarg->flags); |
| 216 | tmp = (u32) (long)karg.handle; |
| 217 | ret |= put_user(tmp, &uarg->handle); |
| 218 | ret |= put_user(karg.mtrr, &uarg->mtrr); |
| 219 | if (ret) |
| 220 | ret = -EFAULT; |
| 221 | } |
| 222 | |
| 223 | return ret; |
| 224 | } |
| 225 | |
| 226 | typedef struct drm32_buf_info { |
| 227 | int count; /* Entries in list */ |
| 228 | u32 list; /* (drm_buf_desc_t *) */ |
| 229 | } drm32_buf_info_t; |
| 230 | #define DRM32_IOCTL_INFO_BUFS DRM_IOWR(0x18, drm32_buf_info_t) |
| 231 | |
| 232 | static int drm32_info_bufs(unsigned int fd, unsigned int cmd, unsigned long arg) |
| 233 | { |
| 234 | drm32_buf_info_t *uarg = (drm32_buf_info_t *)arg; |
| 235 | drm_buf_desc_t *ulist; |
| 236 | drm_buf_info_t karg; |
| 237 | mm_segment_t old_fs; |
| 238 | int orig_count, ret; |
| 239 | u32 tmp; |
| 240 | |
| 241 | if (get_user(karg.count, &uarg->count) || |
| 242 | get_user(tmp, &uarg->list)) |
| 243 | return -EFAULT; |
| 244 | |
| 245 | ulist = (drm_buf_desc_t *) A(tmp); |
| 246 | |
| 247 | orig_count = karg.count; |
| 248 | |
| 249 | karg.list = kmalloc(karg.count * sizeof(drm_buf_desc_t), GFP_KERNEL); |
| 250 | if (!karg.list) |
| 251 | return -EFAULT; |
| 252 | |
| 253 | old_fs = get_fs(); |
| 254 | set_fs(KERNEL_DS); |
| 255 | ret = sys_ioctl(fd, DRM_IOCTL_INFO_BUFS, (unsigned long) &karg); |
| 256 | set_fs(old_fs); |
| 257 | |
| 258 | if (!ret) { |
| 259 | if (karg.count <= orig_count && |
| 260 | (copy_to_user(ulist, karg.list, |
| 261 | karg.count * sizeof(drm_buf_desc_t)))) |
| 262 | ret = -EFAULT; |
| 263 | if (put_user(karg.count, &uarg->count)) |
| 264 | ret = -EFAULT; |
| 265 | } |
| 266 | |
| 267 | kfree(karg.list); |
| 268 | |
| 269 | return ret; |
| 270 | } |
| 271 | |
| 272 | typedef struct drm32_buf_free { |
| 273 | int count; |
| 274 | u32 list; /* (int *) */ |
| 275 | } drm32_buf_free_t; |
| 276 | #define DRM32_IOCTL_FREE_BUFS DRM_IOW( 0x1a, drm32_buf_free_t) |
| 277 | |
| 278 | static int drm32_free_bufs(unsigned int fd, unsigned int cmd, unsigned long arg) |
| 279 | { |
| 280 | drm32_buf_free_t *uarg = (drm32_buf_free_t *)arg; |
| 281 | drm_buf_free_t karg; |
| 282 | mm_segment_t old_fs; |
| 283 | int *ulist; |
| 284 | int ret; |
| 285 | u32 tmp; |
| 286 | |
| 287 | if (get_user(karg.count, &uarg->count) || |
| 288 | get_user(tmp, &uarg->list)) |
| 289 | return -EFAULT; |
| 290 | |
| 291 | ulist = (int *) A(tmp); |
| 292 | |
| 293 | karg.list = kmalloc(karg.count * sizeof(int), GFP_KERNEL); |
| 294 | if (!karg.list) |
| 295 | return -ENOMEM; |
| 296 | |
| 297 | ret = -EFAULT; |
| 298 | if (copy_from_user(karg.list, ulist, (karg.count * sizeof(int)))) |
| 299 | goto out; |
| 300 | |
| 301 | old_fs = get_fs(); |
| 302 | set_fs(KERNEL_DS); |
| 303 | ret = sys_ioctl(fd, DRM_IOCTL_FREE_BUFS, (unsigned long) &karg); |
| 304 | set_fs(old_fs); |
| 305 | |
| 306 | out: |
| 307 | kfree(karg.list); |
| 308 | |
| 309 | return ret; |
| 310 | } |
| 311 | |
| 312 | typedef struct drm32_buf_pub { |
| 313 | int idx; /* Index into master buflist */ |
| 314 | int total; /* Buffer size */ |
| 315 | int used; /* Amount of buffer in use (for DMA) */ |
| 316 | u32 address; /* Address of buffer (void *) */ |
| 317 | } drm32_buf_pub_t; |
| 318 | |
| 319 | typedef struct drm32_buf_map { |
| 320 | int count; /* Length of buflist */ |
| 321 | u32 virtual; /* Mmaped area in user-virtual (void *) */ |
| 322 | u32 list; /* Buffer information (drm_buf_pub_t *) */ |
| 323 | } drm32_buf_map_t; |
| 324 | #define DRM32_IOCTL_MAP_BUFS DRM_IOWR(0x19, drm32_buf_map_t) |
| 325 | |
| 326 | static int drm32_map_bufs(unsigned int fd, unsigned int cmd, unsigned long arg) |
| 327 | { |
| 328 | drm32_buf_map_t *uarg = (drm32_buf_map_t *)arg; |
| 329 | drm32_buf_pub_t *ulist; |
| 330 | drm_buf_map_t karg; |
| 331 | mm_segment_t old_fs; |
| 332 | int orig_count, ret, i; |
| 333 | u32 tmp1, tmp2; |
| 334 | |
| 335 | if (get_user(karg.count, &uarg->count) || |
| 336 | get_user(tmp1, &uarg->virtual) || |
| 337 | get_user(tmp2, &uarg->list)) |
| 338 | return -EFAULT; |
| 339 | |
| 340 | karg.virtual = (void *) A(tmp1); |
| 341 | ulist = (drm32_buf_pub_t *) A(tmp2); |
| 342 | |
| 343 | orig_count = karg.count; |
| 344 | |
| 345 | karg.list = kmalloc(karg.count * sizeof(drm_buf_pub_t), GFP_KERNEL); |
| 346 | if (!karg.list) |
| 347 | return -ENOMEM; |
| 348 | |
| 349 | ret = -EFAULT; |
| 350 | for (i = 0; i < karg.count; i++) { |
| 351 | if (get_user(karg.list[i].idx, &ulist[i].idx) || |
| 352 | get_user(karg.list[i].total, &ulist[i].total) || |
| 353 | get_user(karg.list[i].used, &ulist[i].used) || |
| 354 | get_user(tmp1, &ulist[i].address)) |
| 355 | goto out; |
| 356 | |
| 357 | karg.list[i].address = (void *) A(tmp1); |
| 358 | } |
| 359 | |
| 360 | old_fs = get_fs(); |
| 361 | set_fs(KERNEL_DS); |
| 362 | ret = sys_ioctl(fd, DRM_IOCTL_MAP_BUFS, (unsigned long) &karg); |
| 363 | set_fs(old_fs); |
| 364 | |
| 365 | if (!ret) { |
| 366 | for (i = 0; i < orig_count; i++) { |
| 367 | tmp1 = (u32) (long) karg.list[i].address; |
| 368 | if (put_user(karg.list[i].idx, &ulist[i].idx) || |
| 369 | put_user(karg.list[i].total, &ulist[i].total) || |
| 370 | put_user(karg.list[i].used, &ulist[i].used) || |
| 371 | put_user(tmp1, &ulist[i].address)) { |
| 372 | ret = -EFAULT; |
| 373 | goto out; |
| 374 | } |
| 375 | } |
| 376 | if (put_user(karg.count, &uarg->count)) |
| 377 | ret = -EFAULT; |
| 378 | } |
| 379 | |
| 380 | out: |
| 381 | kfree(karg.list); |
| 382 | return ret; |
| 383 | } |
| 384 | |
| 385 | typedef struct drm32_dma { |
| 386 | /* Indices here refer to the offset into |
| 387 | buflist in drm_buf_get_t. */ |
| 388 | int context; /* Context handle */ |
| 389 | int send_count; /* Number of buffers to send */ |
| 390 | u32 send_indices; /* List of handles to buffers (int *) */ |
| 391 | u32 send_sizes; /* Lengths of data to send (int *) */ |
| 392 | drm_dma_flags_t flags; /* Flags */ |
| 393 | int request_count; /* Number of buffers requested */ |
| 394 | int request_size; /* Desired size for buffers */ |
| 395 | u32 request_indices; /* Buffer information (int *) */ |
| 396 | u32 request_sizes; /* (int *) */ |
| 397 | int granted_count; /* Number of buffers granted */ |
| 398 | } drm32_dma_t; |
| 399 | #define DRM32_IOCTL_DMA DRM_IOWR(0x29, drm32_dma_t) |
| 400 | |
| 401 | /* RED PEN The DRM layer blindly dereferences the send/request |
| 402 | * indice/size arrays even though they are userland |
| 403 | * pointers. -DaveM |
| 404 | */ |
| 405 | static int drm32_dma(unsigned int fd, unsigned int cmd, unsigned long arg) |
| 406 | { |
| 407 | drm32_dma_t *uarg = (drm32_dma_t *) arg; |
| 408 | int *u_si, *u_ss, *u_ri, *u_rs; |
| 409 | drm_dma_t karg; |
| 410 | mm_segment_t old_fs; |
| 411 | int ret; |
| 412 | u32 tmp1, tmp2, tmp3, tmp4; |
| 413 | |
| 414 | karg.send_indices = karg.send_sizes = NULL; |
| 415 | karg.request_indices = karg.request_sizes = NULL; |
| 416 | |
| 417 | if (get_user(karg.context, &uarg->context) || |
| 418 | get_user(karg.send_count, &uarg->send_count) || |
| 419 | get_user(tmp1, &uarg->send_indices) || |
| 420 | get_user(tmp2, &uarg->send_sizes) || |
| 421 | get_user(karg.flags, &uarg->flags) || |
| 422 | get_user(karg.request_count, &uarg->request_count) || |
| 423 | get_user(karg.request_size, &uarg->request_size) || |
| 424 | get_user(tmp3, &uarg->request_indices) || |
| 425 | get_user(tmp4, &uarg->request_sizes) || |
| 426 | get_user(karg.granted_count, &uarg->granted_count)) |
| 427 | return -EFAULT; |
| 428 | |
| 429 | u_si = (int *) A(tmp1); |
| 430 | u_ss = (int *) A(tmp2); |
| 431 | u_ri = (int *) A(tmp3); |
| 432 | u_rs = (int *) A(tmp4); |
| 433 | |
| 434 | if (karg.send_count) { |
| 435 | karg.send_indices = kmalloc(karg.send_count * sizeof(int), GFP_KERNEL); |
| 436 | karg.send_sizes = kmalloc(karg.send_count * sizeof(int), GFP_KERNEL); |
| 437 | |
| 438 | ret = -ENOMEM; |
| 439 | if (!karg.send_indices || !karg.send_sizes) |
| 440 | goto out; |
| 441 | |
| 442 | ret = -EFAULT; |
| 443 | if (copy_from_user(karg.send_indices, u_si, |
| 444 | (karg.send_count * sizeof(int))) || |
| 445 | copy_from_user(karg.send_sizes, u_ss, |
| 446 | (karg.send_count * sizeof(int)))) |
| 447 | goto out; |
| 448 | } |
| 449 | |
| 450 | if (karg.request_count) { |
| 451 | karg.request_indices = kmalloc(karg.request_count * sizeof(int), GFP_KERNEL); |
| 452 | karg.request_sizes = kmalloc(karg.request_count * sizeof(int), GFP_KERNEL); |
| 453 | |
| 454 | ret = -ENOMEM; |
| 455 | if (!karg.request_indices || !karg.request_sizes) |
| 456 | goto out; |
| 457 | |
| 458 | ret = -EFAULT; |
| 459 | if (copy_from_user(karg.request_indices, u_ri, |
| 460 | (karg.request_count * sizeof(int))) || |
| 461 | copy_from_user(karg.request_sizes, u_rs, |
| 462 | (karg.request_count * sizeof(int)))) |
| 463 | goto out; |
| 464 | } |
| 465 | |
| 466 | old_fs = get_fs(); |
| 467 | set_fs(KERNEL_DS); |
| 468 | ret = sys_ioctl(fd, DRM_IOCTL_DMA, (unsigned long) &karg); |
| 469 | set_fs(old_fs); |
| 470 | |
| 471 | if (!ret) { |
| 472 | if (put_user(karg.context, &uarg->context) || |
| 473 | put_user(karg.send_count, &uarg->send_count) || |
| 474 | put_user(karg.flags, &uarg->flags) || |
| 475 | put_user(karg.request_count, &uarg->request_count) || |
| 476 | put_user(karg.request_size, &uarg->request_size) || |
| 477 | put_user(karg.granted_count, &uarg->granted_count)) |
| 478 | ret = -EFAULT; |
| 479 | |
| 480 | if (karg.send_count) { |
| 481 | if (copy_to_user(u_si, karg.send_indices, |
| 482 | (karg.send_count * sizeof(int))) || |
| 483 | copy_to_user(u_ss, karg.send_sizes, |
| 484 | (karg.send_count * sizeof(int)))) |
| 485 | ret = -EFAULT; |
| 486 | } |
| 487 | if (karg.request_count) { |
| 488 | if (copy_to_user(u_ri, karg.request_indices, |
| 489 | (karg.request_count * sizeof(int))) || |
| 490 | copy_to_user(u_rs, karg.request_sizes, |
| 491 | (karg.request_count * sizeof(int)))) |
| 492 | ret = -EFAULT; |
| 493 | } |
| 494 | } |
| 495 | |
| 496 | out: |
| 497 | if (karg.send_indices) |
| 498 | kfree(karg.send_indices); |
| 499 | if (karg.send_sizes) |
| 500 | kfree(karg.send_sizes); |
| 501 | if (karg.request_indices) |
| 502 | kfree(karg.request_indices); |
| 503 | if (karg.request_sizes) |
| 504 | kfree(karg.request_sizes); |
| 505 | |
| 506 | return ret; |
| 507 | } |
| 508 | |
| 509 | typedef struct drm32_ctx_res { |
| 510 | int count; |
| 511 | u32 contexts; /* (drm_ctx_t *) */ |
| 512 | } drm32_ctx_res_t; |
| 513 | #define DRM32_IOCTL_RES_CTX DRM_IOWR(0x26, drm32_ctx_res_t) |
| 514 | |
| 515 | static int drm32_res_ctx(unsigned int fd, unsigned int cmd, unsigned long arg) |
| 516 | { |
| 517 | drm32_ctx_res_t *uarg = (drm32_ctx_res_t *) arg; |
| 518 | drm_ctx_t *ulist; |
| 519 | drm_ctx_res_t karg; |
| 520 | mm_segment_t old_fs; |
| 521 | int orig_count, ret; |
| 522 | u32 tmp; |
| 523 | |
| 524 | karg.contexts = NULL; |
| 525 | if (get_user(karg.count, &uarg->count) || |
| 526 | get_user(tmp, &uarg->contexts)) |
| 527 | return -EFAULT; |
| 528 | |
| 529 | ulist = (drm_ctx_t *) A(tmp); |
| 530 | |
| 531 | orig_count = karg.count; |
| 532 | if (karg.count && ulist) { |
| 533 | karg.contexts = kmalloc((karg.count * sizeof(drm_ctx_t)), GFP_KERNEL); |
| 534 | if (!karg.contexts) |
| 535 | return -ENOMEM; |
| 536 | if (copy_from_user(karg.contexts, ulist, |
| 537 | (karg.count * sizeof(drm_ctx_t)))) { |
| 538 | kfree(karg.contexts); |
| 539 | return -EFAULT; |
| 540 | } |
| 541 | } |
| 542 | |
| 543 | old_fs = get_fs(); |
| 544 | set_fs(KERNEL_DS); |
| 545 | ret = sys_ioctl(fd, DRM_IOCTL_RES_CTX, (unsigned long) &karg); |
| 546 | set_fs(old_fs); |
| 547 | |
| 548 | if (!ret) { |
| 549 | if (orig_count) { |
| 550 | if (copy_to_user(ulist, karg.contexts, |
| 551 | (orig_count * sizeof(drm_ctx_t)))) |
| 552 | ret = -EFAULT; |
| 553 | } |
| 554 | if (put_user(karg.count, &uarg->count)) |
| 555 | ret = -EFAULT; |
| 556 | } |
| 557 | |
| 558 | if (karg.contexts) |
| 559 | kfree(karg.contexts); |
| 560 | |
| 561 | return ret; |
| 562 | } |
| 563 | |
| 564 | #endif |
| 565 | |
| 566 | #define HANDLE_IOCTL(cmd, handler) { cmd, (ioctl_trans_handler_t)handler, NULL }, |
| 567 | #define COMPATIBLE_IOCTL(cmd) HANDLE_IOCTL(cmd, sys_ioctl) |
| 568 | |
| 569 | #define IOCTL_TABLE_START struct ioctl_trans ioctl_start[] = { |
| 570 | #define IOCTL_TABLE_END }; |
| 571 | |
| 572 | IOCTL_TABLE_START |
| 573 | #include <linux/compat_ioctl.h> |
| 574 | |
| 575 | #define DECLARES |
| 576 | #include "compat_ioctl.c" |
| 577 | |
| 578 | /* Might be moved to compat_ioctl.h with some ifdefs... */ |
| 579 | COMPATIBLE_IOCTL(TIOCSTART) |
| 580 | COMPATIBLE_IOCTL(TIOCSTOP) |
| 581 | COMPATIBLE_IOCTL(TIOCSLTC) |
| 582 | |
| 583 | /* PA-specific ioctls */ |
| 584 | COMPATIBLE_IOCTL(PA_PERF_ON) |
| 585 | COMPATIBLE_IOCTL(PA_PERF_OFF) |
| 586 | COMPATIBLE_IOCTL(PA_PERF_VERSION) |
| 587 | |
| 588 | /* And these ioctls need translation */ |
| 589 | HANDLE_IOCTL(SIOCGPPPSTATS, dev_ifsioc) |
| 590 | HANDLE_IOCTL(SIOCGPPPCSTATS, dev_ifsioc) |
| 591 | HANDLE_IOCTL(SIOCGPPPVER, dev_ifsioc) |
| 592 | |
| 593 | #if defined(CONFIG_GEN_RTC) |
| 594 | COMPATIBLE_IOCTL(RTC_AIE_ON) |
| 595 | COMPATIBLE_IOCTL(RTC_AIE_OFF) |
| 596 | COMPATIBLE_IOCTL(RTC_UIE_ON) |
| 597 | COMPATIBLE_IOCTL(RTC_UIE_OFF) |
| 598 | COMPATIBLE_IOCTL(RTC_PIE_ON) |
| 599 | COMPATIBLE_IOCTL(RTC_PIE_OFF) |
| 600 | COMPATIBLE_IOCTL(RTC_WIE_ON) |
| 601 | COMPATIBLE_IOCTL(RTC_WIE_OFF) |
| 602 | COMPATIBLE_IOCTL(RTC_ALM_SET) /* struct rtc_time only has ints */ |
| 603 | COMPATIBLE_IOCTL(RTC_ALM_READ) /* struct rtc_time only has ints */ |
| 604 | COMPATIBLE_IOCTL(RTC_RD_TIME) /* struct rtc_time only has ints */ |
| 605 | COMPATIBLE_IOCTL(RTC_SET_TIME) /* struct rtc_time only has ints */ |
| 606 | HANDLE_IOCTL(RTC_IRQP_READ, w_long) |
| 607 | COMPATIBLE_IOCTL(RTC_IRQP_SET) |
| 608 | HANDLE_IOCTL(RTC_EPOCH_READ, w_long) |
| 609 | COMPATIBLE_IOCTL(RTC_EPOCH_SET) |
| 610 | #endif |
| 611 | |
| 612 | #if defined(CONFIG_DRM) || defined(CONFIG_DRM_MODULE) |
| 613 | HANDLE_IOCTL(DRM32_IOCTL_VERSION, drm32_version); |
| 614 | HANDLE_IOCTL(DRM32_IOCTL_GET_UNIQUE, drm32_getsetunique); |
| 615 | HANDLE_IOCTL(DRM32_IOCTL_SET_UNIQUE, drm32_getsetunique); |
| 616 | HANDLE_IOCTL(DRM32_IOCTL_ADD_MAP, drm32_addmap); |
| 617 | HANDLE_IOCTL(DRM32_IOCTL_INFO_BUFS, drm32_info_bufs); |
| 618 | HANDLE_IOCTL(DRM32_IOCTL_FREE_BUFS, drm32_free_bufs); |
| 619 | HANDLE_IOCTL(DRM32_IOCTL_MAP_BUFS, drm32_map_bufs); |
| 620 | HANDLE_IOCTL(DRM32_IOCTL_DMA, drm32_dma); |
| 621 | HANDLE_IOCTL(DRM32_IOCTL_RES_CTX, drm32_res_ctx); |
| 622 | #endif /* DRM */ |
| 623 | IOCTL_TABLE_END |
| 624 | |
| 625 | int ioctl_table_size = ARRAY_SIZE(ioctl_start); |