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