1 /* sys_sparc32.c: Conversion between 32bit and 64bit native syscalls. 2 * 3 * Copyright (C) 1997,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz) 4 * Copyright (C) 1997, 2007 David S. Miller (davem@davemloft.net) 5 * 6 * These routines maintain argument size conversion between 32bit and 64bit 7 * environment. 8 */ 9 10 #include <linux/kernel.h> 11 #include <linux/sched.h> 12 #include <linux/capability.h> 13 #include <linux/fs.h> 14 #include <linux/mm.h> 15 #include <linux/file.h> 16 #include <linux/signal.h> 17 #include <linux/resource.h> 18 #include <linux/times.h> 19 #include <linux/utsname.h> 20 #include <linux/smp.h> 21 #include <linux/smp_lock.h> 22 #include <linux/sem.h> 23 #include <linux/msg.h> 24 #include <linux/shm.h> 25 #include <linux/slab.h> 26 #include <linux/uio.h> 27 #include <linux/nfs_fs.h> 28 #include <linux/quota.h> 29 #include <linux/module.h> 30 #include <linux/sunrpc/svc.h> 31 #include <linux/nfsd/nfsd.h> 32 #include <linux/nfsd/cache.h> 33 #include <linux/nfsd/xdr.h> 34 #include <linux/nfsd/syscall.h> 35 #include <linux/poll.h> 36 #include <linux/personality.h> 37 #include <linux/stat.h> 38 #include <linux/filter.h> 39 #include <linux/highmem.h> 40 #include <linux/highuid.h> 41 #include <linux/mman.h> 42 #include <linux/ipv6.h> 43 #include <linux/in.h> 44 #include <linux/icmpv6.h> 45 #include <linux/syscalls.h> 46 #include <linux/sysctl.h> 47 #include <linux/binfmts.h> 48 #include <linux/dnotify.h> 49 #include <linux/security.h> 50 #include <linux/compat.h> 51 #include <linux/vfs.h> 52 #include <linux/netfilter_ipv4/ip_tables.h> 53 #include <linux/ptrace.h> 54 55 #include <asm/types.h> 56 #include <asm/uaccess.h> 57 #include <asm/fpumacro.h> 58 #include <asm/mmu_context.h> 59 #include <asm/compat_signal.h> 60 61 #ifdef CONFIG_SYSVIPC 62 asmlinkage long compat_sys_ipc(u32 call, u32 first, u32 second, u32 third, compat_uptr_t ptr, u32 fifth) 63 { 64 int version; 65 66 version = call >> 16; /* hack for backward compatibility */ 67 call &= 0xffff; 68 69 switch (call) { 70 case SEMTIMEDOP: 71 if (fifth) 72 /* sign extend semid */ 73 return compat_sys_semtimedop((int)first, 74 compat_ptr(ptr), second, 75 compat_ptr(fifth)); 76 /* else fall through for normal semop() */ 77 case SEMOP: 78 /* struct sembuf is the same on 32 and 64bit :)) */ 79 /* sign extend semid */ 80 return sys_semtimedop((int)first, compat_ptr(ptr), second, 81 NULL); 82 case SEMGET: 83 /* sign extend key, nsems */ 84 return sys_semget((int)first, (int)second, third); 85 case SEMCTL: 86 /* sign extend semid, semnum */ 87 return compat_sys_semctl((int)first, (int)second, third, 88 compat_ptr(ptr)); 89 90 case MSGSND: 91 /* sign extend msqid */ 92 return compat_sys_msgsnd((int)first, (int)second, third, 93 compat_ptr(ptr)); 94 case MSGRCV: 95 /* sign extend msqid, msgtyp */ 96 return compat_sys_msgrcv((int)first, second, (int)fifth, 97 third, version, compat_ptr(ptr)); 98 case MSGGET: 99 /* sign extend key */ 100 return sys_msgget((int)first, second); 101 case MSGCTL: 102 /* sign extend msqid */ 103 return compat_sys_msgctl((int)first, second, compat_ptr(ptr)); 104 105 case SHMAT: 106 /* sign extend shmid */ 107 return compat_sys_shmat((int)first, second, third, version, 108 compat_ptr(ptr)); 109 case SHMDT: 110 return sys_shmdt(compat_ptr(ptr)); 111 case SHMGET: 112 /* sign extend key_t */ 113 return sys_shmget((int)first, second, third); 114 case SHMCTL: 115 /* sign extend shmid */ 116 return compat_sys_shmctl((int)first, second, compat_ptr(ptr)); 117 118 default: 119 return -ENOSYS; 120 }; 121 122 return -ENOSYS; 123 } 124 #endif 125 126 asmlinkage long sys32_truncate64(const char __user * path, unsigned long high, unsigned long low) 127 { 128 if ((int)high < 0) 129 return -EINVAL; 130 else 131 return sys_truncate(path, (high << 32) | low); 132 } 133 134 asmlinkage long sys32_ftruncate64(unsigned int fd, unsigned long high, unsigned long low) 135 { 136 if ((int)high < 0) 137 return -EINVAL; 138 else 139 return sys_ftruncate(fd, (high << 32) | low); 140 } 141 142 static int cp_compat_stat64(struct kstat *stat, 143 struct compat_stat64 __user *statbuf) 144 { 145 int err; 146 147 err = put_user(huge_encode_dev(stat->dev), &statbuf->st_dev); 148 err |= put_user(stat->ino, &statbuf->st_ino); 149 err |= put_user(stat->mode, &statbuf->st_mode); 150 err |= put_user(stat->nlink, &statbuf->st_nlink); 151 err |= put_user(stat->uid, &statbuf->st_uid); 152 err |= put_user(stat->gid, &statbuf->st_gid); 153 err |= put_user(huge_encode_dev(stat->rdev), &statbuf->st_rdev); 154 err |= put_user(0, (unsigned long __user *) &statbuf->__pad3[0]); 155 err |= put_user(stat->size, &statbuf->st_size); 156 err |= put_user(stat->blksize, &statbuf->st_blksize); 157 err |= put_user(0, (unsigned int __user *) &statbuf->__pad4[0]); 158 err |= put_user(0, (unsigned int __user *) &statbuf->__pad4[4]); 159 err |= put_user(stat->blocks, &statbuf->st_blocks); 160 err |= put_user(stat->atime.tv_sec, &statbuf->st_atime); 161 err |= put_user(stat->atime.tv_nsec, &statbuf->st_atime_nsec); 162 err |= put_user(stat->mtime.tv_sec, &statbuf->st_mtime); 163 err |= put_user(stat->mtime.tv_nsec, &statbuf->st_mtime_nsec); 164 err |= put_user(stat->ctime.tv_sec, &statbuf->st_ctime); 165 err |= put_user(stat->ctime.tv_nsec, &statbuf->st_ctime_nsec); 166 err |= put_user(0, &statbuf->__unused4); 167 err |= put_user(0, &statbuf->__unused5); 168 169 return err; 170 } 171 172 asmlinkage long compat_sys_stat64(char __user * filename, 173 struct compat_stat64 __user *statbuf) 174 { 175 struct kstat stat; 176 int error = vfs_stat(filename, &stat); 177 178 if (!error) 179 error = cp_compat_stat64(&stat, statbuf); 180 return error; 181 } 182 183 asmlinkage long compat_sys_lstat64(char __user * filename, 184 struct compat_stat64 __user *statbuf) 185 { 186 struct kstat stat; 187 int error = vfs_lstat(filename, &stat); 188 189 if (!error) 190 error = cp_compat_stat64(&stat, statbuf); 191 return error; 192 } 193 194 asmlinkage long compat_sys_fstat64(unsigned int fd, 195 struct compat_stat64 __user * statbuf) 196 { 197 struct kstat stat; 198 int error = vfs_fstat(fd, &stat); 199 200 if (!error) 201 error = cp_compat_stat64(&stat, statbuf); 202 return error; 203 } 204 205 asmlinkage long compat_sys_fstatat64(unsigned int dfd, char __user *filename, 206 struct compat_stat64 __user * statbuf, int flag) 207 { 208 struct kstat stat; 209 int error; 210 211 error = vfs_fstatat(dfd, filename, &stat, flag); 212 if (error) 213 return error; 214 return cp_compat_stat64(&stat, statbuf); 215 } 216 217 asmlinkage long compat_sys_sysfs(int option, u32 arg1, u32 arg2) 218 { 219 return sys_sysfs(option, arg1, arg2); 220 } 221 222 asmlinkage long compat_sys_sched_rr_get_interval(compat_pid_t pid, struct compat_timespec __user *interval) 223 { 224 struct timespec t; 225 int ret; 226 mm_segment_t old_fs = get_fs (); 227 228 set_fs (KERNEL_DS); 229 ret = sys_sched_rr_get_interval(pid, (struct timespec __user *) &t); 230 set_fs (old_fs); 231 if (put_compat_timespec(&t, interval)) 232 return -EFAULT; 233 return ret; 234 } 235 236 asmlinkage long compat_sys_rt_sigprocmask(int how, 237 compat_sigset_t __user *set, 238 compat_sigset_t __user *oset, 239 compat_size_t sigsetsize) 240 { 241 sigset_t s; 242 compat_sigset_t s32; 243 int ret; 244 mm_segment_t old_fs = get_fs(); 245 246 if (set) { 247 if (copy_from_user (&s32, set, sizeof(compat_sigset_t))) 248 return -EFAULT; 249 switch (_NSIG_WORDS) { 250 case 4: s.sig[3] = s32.sig[6] | (((long)s32.sig[7]) << 32); 251 case 3: s.sig[2] = s32.sig[4] | (((long)s32.sig[5]) << 32); 252 case 2: s.sig[1] = s32.sig[2] | (((long)s32.sig[3]) << 32); 253 case 1: s.sig[0] = s32.sig[0] | (((long)s32.sig[1]) << 32); 254 } 255 } 256 set_fs (KERNEL_DS); 257 ret = sys_rt_sigprocmask(how, 258 set ? (sigset_t __user *) &s : NULL, 259 oset ? (sigset_t __user *) &s : NULL, 260 sigsetsize); 261 set_fs (old_fs); 262 if (ret) return ret; 263 if (oset) { 264 switch (_NSIG_WORDS) { 265 case 4: s32.sig[7] = (s.sig[3] >> 32); s32.sig[6] = s.sig[3]; 266 case 3: s32.sig[5] = (s.sig[2] >> 32); s32.sig[4] = s.sig[2]; 267 case 2: s32.sig[3] = (s.sig[1] >> 32); s32.sig[2] = s.sig[1]; 268 case 1: s32.sig[1] = (s.sig[0] >> 32); s32.sig[0] = s.sig[0]; 269 } 270 if (copy_to_user (oset, &s32, sizeof(compat_sigset_t))) 271 return -EFAULT; 272 } 273 return 0; 274 } 275 276 asmlinkage long sys32_rt_sigpending(compat_sigset_t __user *set, 277 compat_size_t sigsetsize) 278 { 279 sigset_t s; 280 compat_sigset_t s32; 281 int ret; 282 mm_segment_t old_fs = get_fs(); 283 284 set_fs (KERNEL_DS); 285 ret = sys_rt_sigpending((sigset_t __user *) &s, sigsetsize); 286 set_fs (old_fs); 287 if (!ret) { 288 switch (_NSIG_WORDS) { 289 case 4: s32.sig[7] = (s.sig[3] >> 32); s32.sig[6] = s.sig[3]; 290 case 3: s32.sig[5] = (s.sig[2] >> 32); s32.sig[4] = s.sig[2]; 291 case 2: s32.sig[3] = (s.sig[1] >> 32); s32.sig[2] = s.sig[1]; 292 case 1: s32.sig[1] = (s.sig[0] >> 32); s32.sig[0] = s.sig[0]; 293 } 294 if (copy_to_user (set, &s32, sizeof(compat_sigset_t))) 295 return -EFAULT; 296 } 297 return ret; 298 } 299 300 asmlinkage long compat_sys_rt_sigqueueinfo(int pid, int sig, 301 struct compat_siginfo __user *uinfo) 302 { 303 siginfo_t info; 304 int ret; 305 mm_segment_t old_fs = get_fs(); 306 307 if (copy_siginfo_from_user32(&info, uinfo)) 308 return -EFAULT; 309 310 set_fs (KERNEL_DS); 311 ret = sys_rt_sigqueueinfo(pid, sig, (siginfo_t __user *) &info); 312 set_fs (old_fs); 313 return ret; 314 } 315 316 asmlinkage long compat_sys_sigaction(int sig, struct old_sigaction32 __user *act, 317 struct old_sigaction32 __user *oact) 318 { 319 struct k_sigaction new_ka, old_ka; 320 int ret; 321 322 WARN_ON_ONCE(sig >= 0); 323 sig = -sig; 324 325 if (act) { 326 compat_old_sigset_t mask; 327 u32 u_handler, u_restorer; 328 329 ret = get_user(u_handler, &act->sa_handler); 330 new_ka.sa.sa_handler = compat_ptr(u_handler); 331 ret |= __get_user(u_restorer, &act->sa_restorer); 332 new_ka.sa.sa_restorer = compat_ptr(u_restorer); 333 ret |= __get_user(new_ka.sa.sa_flags, &act->sa_flags); 334 ret |= __get_user(mask, &act->sa_mask); 335 if (ret) 336 return ret; 337 new_ka.ka_restorer = NULL; 338 siginitset(&new_ka.sa.sa_mask, mask); 339 } 340 341 ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL); 342 343 if (!ret && oact) { 344 ret = put_user(ptr_to_compat(old_ka.sa.sa_handler), &oact->sa_handler); 345 ret |= __put_user(ptr_to_compat(old_ka.sa.sa_restorer), &oact->sa_restorer); 346 ret |= __put_user(old_ka.sa.sa_flags, &oact->sa_flags); 347 ret |= __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask); 348 } 349 350 return ret; 351 } 352 353 asmlinkage long compat_sys_rt_sigaction(int sig, 354 struct sigaction32 __user *act, 355 struct sigaction32 __user *oact, 356 void __user *restorer, 357 compat_size_t sigsetsize) 358 { 359 struct k_sigaction new_ka, old_ka; 360 int ret; 361 compat_sigset_t set32; 362 363 /* XXX: Don't preclude handling different sized sigset_t's. */ 364 if (sigsetsize != sizeof(compat_sigset_t)) 365 return -EINVAL; 366 367 if (act) { 368 u32 u_handler, u_restorer; 369 370 new_ka.ka_restorer = restorer; 371 ret = get_user(u_handler, &act->sa_handler); 372 new_ka.sa.sa_handler = compat_ptr(u_handler); 373 ret |= __copy_from_user(&set32, &act->sa_mask, sizeof(compat_sigset_t)); 374 switch (_NSIG_WORDS) { 375 case 4: new_ka.sa.sa_mask.sig[3] = set32.sig[6] | (((long)set32.sig[7]) << 32); 376 case 3: new_ka.sa.sa_mask.sig[2] = set32.sig[4] | (((long)set32.sig[5]) << 32); 377 case 2: new_ka.sa.sa_mask.sig[1] = set32.sig[2] | (((long)set32.sig[3]) << 32); 378 case 1: new_ka.sa.sa_mask.sig[0] = set32.sig[0] | (((long)set32.sig[1]) << 32); 379 } 380 ret |= __get_user(new_ka.sa.sa_flags, &act->sa_flags); 381 ret |= __get_user(u_restorer, &act->sa_restorer); 382 new_ka.sa.sa_restorer = compat_ptr(u_restorer); 383 if (ret) 384 return -EFAULT; 385 } 386 387 ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL); 388 389 if (!ret && oact) { 390 switch (_NSIG_WORDS) { 391 case 4: set32.sig[7] = (old_ka.sa.sa_mask.sig[3] >> 32); set32.sig[6] = old_ka.sa.sa_mask.sig[3]; 392 case 3: set32.sig[5] = (old_ka.sa.sa_mask.sig[2] >> 32); set32.sig[4] = old_ka.sa.sa_mask.sig[2]; 393 case 2: set32.sig[3] = (old_ka.sa.sa_mask.sig[1] >> 32); set32.sig[2] = old_ka.sa.sa_mask.sig[1]; 394 case 1: set32.sig[1] = (old_ka.sa.sa_mask.sig[0] >> 32); set32.sig[0] = old_ka.sa.sa_mask.sig[0]; 395 } 396 ret = put_user(ptr_to_compat(old_ka.sa.sa_handler), &oact->sa_handler); 397 ret |= __copy_to_user(&oact->sa_mask, &set32, sizeof(compat_sigset_t)); 398 ret |= __put_user(old_ka.sa.sa_flags, &oact->sa_flags); 399 ret |= __put_user(ptr_to_compat(old_ka.sa.sa_restorer), &oact->sa_restorer); 400 if (ret) 401 ret = -EFAULT; 402 } 403 404 return ret; 405 } 406 407 /* 408 * sparc32_execve() executes a new program after the asm stub has set 409 * things up for us. This should basically do what I want it to. 410 */ 411 asmlinkage long sparc32_execve(struct pt_regs *regs) 412 { 413 int error, base = 0; 414 char *filename; 415 416 /* User register window flush is done by entry.S */ 417 418 /* Check for indirect call. */ 419 if ((u32)regs->u_regs[UREG_G1] == 0) 420 base = 1; 421 422 filename = getname(compat_ptr(regs->u_regs[base + UREG_I0])); 423 error = PTR_ERR(filename); 424 if (IS_ERR(filename)) 425 goto out; 426 427 error = compat_do_execve(filename, 428 compat_ptr(regs->u_regs[base + UREG_I1]), 429 compat_ptr(regs->u_regs[base + UREG_I2]), regs); 430 431 putname(filename); 432 433 if (!error) { 434 fprs_write(0); 435 current_thread_info()->xfsr[0] = 0; 436 current_thread_info()->fpsaved[0] = 0; 437 regs->tstate &= ~TSTATE_PEF; 438 } 439 out: 440 return error; 441 } 442 443 #ifdef CONFIG_MODULES 444 445 asmlinkage long sys32_init_module(void __user *umod, u32 len, 446 const char __user *uargs) 447 { 448 return sys_init_module(umod, len, uargs); 449 } 450 451 asmlinkage long sys32_delete_module(const char __user *name_user, 452 unsigned int flags) 453 { 454 return sys_delete_module(name_user, flags); 455 } 456 457 #else /* CONFIG_MODULES */ 458 459 asmlinkage long sys32_init_module(const char __user *name_user, 460 struct module __user *mod_user) 461 { 462 return -ENOSYS; 463 } 464 465 asmlinkage long sys32_delete_module(const char __user *name_user) 466 { 467 return -ENOSYS; 468 } 469 470 #endif /* CONFIG_MODULES */ 471 472 asmlinkage compat_ssize_t sys32_pread64(unsigned int fd, 473 char __user *ubuf, 474 compat_size_t count, 475 unsigned long poshi, 476 unsigned long poslo) 477 { 478 return sys_pread64(fd, ubuf, count, (poshi << 32) | poslo); 479 } 480 481 asmlinkage compat_ssize_t sys32_pwrite64(unsigned int fd, 482 char __user *ubuf, 483 compat_size_t count, 484 unsigned long poshi, 485 unsigned long poslo) 486 { 487 return sys_pwrite64(fd, ubuf, count, (poshi << 32) | poslo); 488 } 489 490 asmlinkage long compat_sys_readahead(int fd, 491 unsigned long offhi, 492 unsigned long offlo, 493 compat_size_t count) 494 { 495 return sys_readahead(fd, (offhi << 32) | offlo, count); 496 } 497 498 long compat_sys_fadvise64(int fd, 499 unsigned long offhi, 500 unsigned long offlo, 501 compat_size_t len, int advice) 502 { 503 return sys_fadvise64_64(fd, (offhi << 32) | offlo, len, advice); 504 } 505 506 long compat_sys_fadvise64_64(int fd, 507 unsigned long offhi, unsigned long offlo, 508 unsigned long lenhi, unsigned long lenlo, 509 int advice) 510 { 511 return sys_fadvise64_64(fd, 512 (offhi << 32) | offlo, 513 (lenhi << 32) | lenlo, 514 advice); 515 } 516 517 asmlinkage long compat_sys_sendfile(int out_fd, int in_fd, 518 compat_off_t __user *offset, 519 compat_size_t count) 520 { 521 mm_segment_t old_fs = get_fs(); 522 int ret; 523 off_t of; 524 525 if (offset && get_user(of, offset)) 526 return -EFAULT; 527 528 set_fs(KERNEL_DS); 529 ret = sys_sendfile(out_fd, in_fd, 530 offset ? (off_t __user *) &of : NULL, 531 count); 532 set_fs(old_fs); 533 534 if (offset && put_user(of, offset)) 535 return -EFAULT; 536 537 return ret; 538 } 539 540 asmlinkage long compat_sys_sendfile64(int out_fd, int in_fd, 541 compat_loff_t __user *offset, 542 compat_size_t count) 543 { 544 mm_segment_t old_fs = get_fs(); 545 int ret; 546 loff_t lof; 547 548 if (offset && get_user(lof, offset)) 549 return -EFAULT; 550 551 set_fs(KERNEL_DS); 552 ret = sys_sendfile64(out_fd, in_fd, 553 offset ? (loff_t __user *) &lof : NULL, 554 count); 555 set_fs(old_fs); 556 557 if (offset && put_user(lof, offset)) 558 return -EFAULT; 559 560 return ret; 561 } 562 563 /* This is just a version for 32-bit applications which does 564 * not force O_LARGEFILE on. 565 */ 566 567 asmlinkage long sparc32_open(const char __user *filename, 568 int flags, int mode) 569 { 570 return do_sys_open(AT_FDCWD, filename, flags, mode); 571 } 572 573 extern unsigned long do_mremap(unsigned long addr, 574 unsigned long old_len, unsigned long new_len, 575 unsigned long flags, unsigned long new_addr); 576 577 asmlinkage unsigned long sys32_mremap(unsigned long addr, 578 unsigned long old_len, unsigned long new_len, 579 unsigned long flags, u32 __new_addr) 580 { 581 unsigned long ret = -EINVAL; 582 unsigned long new_addr = __new_addr; 583 584 if (unlikely(sparc_mmap_check(addr, old_len))) 585 goto out; 586 if (unlikely(sparc_mmap_check(new_addr, new_len))) 587 goto out; 588 down_write(¤t->mm->mmap_sem); 589 ret = do_mremap(addr, old_len, new_len, flags, new_addr); 590 up_write(¤t->mm->mmap_sem); 591 out: 592 return ret; 593 } 594 595 struct __sysctl_args32 { 596 u32 name; 597 int nlen; 598 u32 oldval; 599 u32 oldlenp; 600 u32 newval; 601 u32 newlen; 602 u32 __unused[4]; 603 }; 604 605 asmlinkage long sys32_sysctl(struct __sysctl_args32 __user *args) 606 { 607 #ifndef CONFIG_SYSCTL_SYSCALL 608 return -ENOSYS; 609 #else 610 struct __sysctl_args32 tmp; 611 int error; 612 size_t oldlen, __user *oldlenp = NULL; 613 unsigned long addr = (((unsigned long)&args->__unused[0]) + 7UL) & ~7UL; 614 615 if (copy_from_user(&tmp, args, sizeof(tmp))) 616 return -EFAULT; 617 618 if (tmp.oldval && tmp.oldlenp) { 619 /* Duh, this is ugly and might not work if sysctl_args 620 is in read-only memory, but do_sysctl does indirectly 621 a lot of uaccess in both directions and we'd have to 622 basically copy the whole sysctl.c here, and 623 glibc's __sysctl uses rw memory for the structure 624 anyway. */ 625 if (get_user(oldlen, (u32 __user *)(unsigned long)tmp.oldlenp) || 626 put_user(oldlen, (size_t __user *)addr)) 627 return -EFAULT; 628 oldlenp = (size_t __user *)addr; 629 } 630 631 lock_kernel(); 632 error = do_sysctl((int __user *)(unsigned long) tmp.name, 633 tmp.nlen, 634 (void __user *)(unsigned long) tmp.oldval, 635 oldlenp, 636 (void __user *)(unsigned long) tmp.newval, 637 tmp.newlen); 638 unlock_kernel(); 639 if (oldlenp) { 640 if (!error) { 641 if (get_user(oldlen, (size_t __user *)addr) || 642 put_user(oldlen, (u32 __user *)(unsigned long) tmp.oldlenp)) 643 error = -EFAULT; 644 } 645 if (copy_to_user(args->__unused, tmp.__unused, sizeof(tmp.__unused))) 646 error = -EFAULT; 647 } 648 return error; 649 #endif 650 } 651 652 long sys32_lookup_dcookie(unsigned long cookie_high, 653 unsigned long cookie_low, 654 char __user *buf, size_t len) 655 { 656 return sys_lookup_dcookie((cookie_high << 32) | cookie_low, 657 buf, len); 658 } 659 660 long compat_sync_file_range(int fd, unsigned long off_high, unsigned long off_low, unsigned long nb_high, unsigned long nb_low, int flags) 661 { 662 return sys_sync_file_range(fd, 663 (off_high << 32) | off_low, 664 (nb_high << 32) | nb_low, 665 flags); 666 } 667 668 asmlinkage long compat_sys_fallocate(int fd, int mode, u32 offhi, u32 offlo, 669 u32 lenhi, u32 lenlo) 670 { 671 return sys_fallocate(fd, mode, ((loff_t)offhi << 32) | offlo, 672 ((loff_t)lenhi << 32) | lenlo); 673 } 674