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 = -EINVAL; 210 211 if ((flag & ~AT_SYMLINK_NOFOLLOW) != 0) 212 goto out; 213 214 if (flag & AT_SYMLINK_NOFOLLOW) 215 error = vfs_lstat_fd(dfd, filename, &stat); 216 else 217 error = vfs_stat_fd(dfd, filename, &stat); 218 219 if (!error) 220 error = cp_compat_stat64(&stat, statbuf); 221 222 out: 223 return error; 224 } 225 226 asmlinkage long compat_sys_sysfs(int option, u32 arg1, u32 arg2) 227 { 228 return sys_sysfs(option, arg1, arg2); 229 } 230 231 asmlinkage long compat_sys_sched_rr_get_interval(compat_pid_t pid, struct compat_timespec __user *interval) 232 { 233 struct timespec t; 234 int ret; 235 mm_segment_t old_fs = get_fs (); 236 237 set_fs (KERNEL_DS); 238 ret = sys_sched_rr_get_interval(pid, (struct timespec __user *) &t); 239 set_fs (old_fs); 240 if (put_compat_timespec(&t, interval)) 241 return -EFAULT; 242 return ret; 243 } 244 245 asmlinkage long compat_sys_rt_sigprocmask(int how, 246 compat_sigset_t __user *set, 247 compat_sigset_t __user *oset, 248 compat_size_t sigsetsize) 249 { 250 sigset_t s; 251 compat_sigset_t s32; 252 int ret; 253 mm_segment_t old_fs = get_fs(); 254 255 if (set) { 256 if (copy_from_user (&s32, set, sizeof(compat_sigset_t))) 257 return -EFAULT; 258 switch (_NSIG_WORDS) { 259 case 4: s.sig[3] = s32.sig[6] | (((long)s32.sig[7]) << 32); 260 case 3: s.sig[2] = s32.sig[4] | (((long)s32.sig[5]) << 32); 261 case 2: s.sig[1] = s32.sig[2] | (((long)s32.sig[3]) << 32); 262 case 1: s.sig[0] = s32.sig[0] | (((long)s32.sig[1]) << 32); 263 } 264 } 265 set_fs (KERNEL_DS); 266 ret = sys_rt_sigprocmask(how, 267 set ? (sigset_t __user *) &s : NULL, 268 oset ? (sigset_t __user *) &s : NULL, 269 sigsetsize); 270 set_fs (old_fs); 271 if (ret) return ret; 272 if (oset) { 273 switch (_NSIG_WORDS) { 274 case 4: s32.sig[7] = (s.sig[3] >> 32); s32.sig[6] = s.sig[3]; 275 case 3: s32.sig[5] = (s.sig[2] >> 32); s32.sig[4] = s.sig[2]; 276 case 2: s32.sig[3] = (s.sig[1] >> 32); s32.sig[2] = s.sig[1]; 277 case 1: s32.sig[1] = (s.sig[0] >> 32); s32.sig[0] = s.sig[0]; 278 } 279 if (copy_to_user (oset, &s32, sizeof(compat_sigset_t))) 280 return -EFAULT; 281 } 282 return 0; 283 } 284 285 asmlinkage long sys32_rt_sigpending(compat_sigset_t __user *set, 286 compat_size_t sigsetsize) 287 { 288 sigset_t s; 289 compat_sigset_t s32; 290 int ret; 291 mm_segment_t old_fs = get_fs(); 292 293 set_fs (KERNEL_DS); 294 ret = sys_rt_sigpending((sigset_t __user *) &s, sigsetsize); 295 set_fs (old_fs); 296 if (!ret) { 297 switch (_NSIG_WORDS) { 298 case 4: s32.sig[7] = (s.sig[3] >> 32); s32.sig[6] = s.sig[3]; 299 case 3: s32.sig[5] = (s.sig[2] >> 32); s32.sig[4] = s.sig[2]; 300 case 2: s32.sig[3] = (s.sig[1] >> 32); s32.sig[2] = s.sig[1]; 301 case 1: s32.sig[1] = (s.sig[0] >> 32); s32.sig[0] = s.sig[0]; 302 } 303 if (copy_to_user (set, &s32, sizeof(compat_sigset_t))) 304 return -EFAULT; 305 } 306 return ret; 307 } 308 309 asmlinkage long compat_sys_rt_sigqueueinfo(int pid, int sig, 310 struct compat_siginfo __user *uinfo) 311 { 312 siginfo_t info; 313 int ret; 314 mm_segment_t old_fs = get_fs(); 315 316 if (copy_siginfo_from_user32(&info, uinfo)) 317 return -EFAULT; 318 319 set_fs (KERNEL_DS); 320 ret = sys_rt_sigqueueinfo(pid, sig, (siginfo_t __user *) &info); 321 set_fs (old_fs); 322 return ret; 323 } 324 325 asmlinkage long compat_sys_sigaction(int sig, struct old_sigaction32 __user *act, 326 struct old_sigaction32 __user *oact) 327 { 328 struct k_sigaction new_ka, old_ka; 329 int ret; 330 331 WARN_ON_ONCE(sig >= 0); 332 sig = -sig; 333 334 if (act) { 335 compat_old_sigset_t mask; 336 u32 u_handler, u_restorer; 337 338 ret = get_user(u_handler, &act->sa_handler); 339 new_ka.sa.sa_handler = compat_ptr(u_handler); 340 ret |= __get_user(u_restorer, &act->sa_restorer); 341 new_ka.sa.sa_restorer = compat_ptr(u_restorer); 342 ret |= __get_user(new_ka.sa.sa_flags, &act->sa_flags); 343 ret |= __get_user(mask, &act->sa_mask); 344 if (ret) 345 return ret; 346 new_ka.ka_restorer = NULL; 347 siginitset(&new_ka.sa.sa_mask, mask); 348 } 349 350 ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL); 351 352 if (!ret && oact) { 353 ret = put_user(ptr_to_compat(old_ka.sa.sa_handler), &oact->sa_handler); 354 ret |= __put_user(ptr_to_compat(old_ka.sa.sa_restorer), &oact->sa_restorer); 355 ret |= __put_user(old_ka.sa.sa_flags, &oact->sa_flags); 356 ret |= __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask); 357 } 358 359 return ret; 360 } 361 362 asmlinkage long compat_sys_rt_sigaction(int sig, 363 struct sigaction32 __user *act, 364 struct sigaction32 __user *oact, 365 void __user *restorer, 366 compat_size_t sigsetsize) 367 { 368 struct k_sigaction new_ka, old_ka; 369 int ret; 370 compat_sigset_t set32; 371 372 /* XXX: Don't preclude handling different sized sigset_t's. */ 373 if (sigsetsize != sizeof(compat_sigset_t)) 374 return -EINVAL; 375 376 if (act) { 377 u32 u_handler, u_restorer; 378 379 new_ka.ka_restorer = restorer; 380 ret = get_user(u_handler, &act->sa_handler); 381 new_ka.sa.sa_handler = compat_ptr(u_handler); 382 ret |= __copy_from_user(&set32, &act->sa_mask, sizeof(compat_sigset_t)); 383 switch (_NSIG_WORDS) { 384 case 4: new_ka.sa.sa_mask.sig[3] = set32.sig[6] | (((long)set32.sig[7]) << 32); 385 case 3: new_ka.sa.sa_mask.sig[2] = set32.sig[4] | (((long)set32.sig[5]) << 32); 386 case 2: new_ka.sa.sa_mask.sig[1] = set32.sig[2] | (((long)set32.sig[3]) << 32); 387 case 1: new_ka.sa.sa_mask.sig[0] = set32.sig[0] | (((long)set32.sig[1]) << 32); 388 } 389 ret |= __get_user(new_ka.sa.sa_flags, &act->sa_flags); 390 ret |= __get_user(u_restorer, &act->sa_restorer); 391 new_ka.sa.sa_restorer = compat_ptr(u_restorer); 392 if (ret) 393 return -EFAULT; 394 } 395 396 ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL); 397 398 if (!ret && oact) { 399 switch (_NSIG_WORDS) { 400 case 4: set32.sig[7] = (old_ka.sa.sa_mask.sig[3] >> 32); set32.sig[6] = old_ka.sa.sa_mask.sig[3]; 401 case 3: set32.sig[5] = (old_ka.sa.sa_mask.sig[2] >> 32); set32.sig[4] = old_ka.sa.sa_mask.sig[2]; 402 case 2: set32.sig[3] = (old_ka.sa.sa_mask.sig[1] >> 32); set32.sig[2] = old_ka.sa.sa_mask.sig[1]; 403 case 1: set32.sig[1] = (old_ka.sa.sa_mask.sig[0] >> 32); set32.sig[0] = old_ka.sa.sa_mask.sig[0]; 404 } 405 ret = put_user(ptr_to_compat(old_ka.sa.sa_handler), &oact->sa_handler); 406 ret |= __copy_to_user(&oact->sa_mask, &set32, sizeof(compat_sigset_t)); 407 ret |= __put_user(old_ka.sa.sa_flags, &oact->sa_flags); 408 ret |= __put_user(ptr_to_compat(old_ka.sa.sa_restorer), &oact->sa_restorer); 409 if (ret) 410 ret = -EFAULT; 411 } 412 413 return ret; 414 } 415 416 /* 417 * sparc32_execve() executes a new program after the asm stub has set 418 * things up for us. This should basically do what I want it to. 419 */ 420 asmlinkage long sparc32_execve(struct pt_regs *regs) 421 { 422 int error, base = 0; 423 char *filename; 424 425 /* User register window flush is done by entry.S */ 426 427 /* Check for indirect call. */ 428 if ((u32)regs->u_regs[UREG_G1] == 0) 429 base = 1; 430 431 filename = getname(compat_ptr(regs->u_regs[base + UREG_I0])); 432 error = PTR_ERR(filename); 433 if (IS_ERR(filename)) 434 goto out; 435 436 error = compat_do_execve(filename, 437 compat_ptr(regs->u_regs[base + UREG_I1]), 438 compat_ptr(regs->u_regs[base + UREG_I2]), regs); 439 440 putname(filename); 441 442 if (!error) { 443 fprs_write(0); 444 current_thread_info()->xfsr[0] = 0; 445 current_thread_info()->fpsaved[0] = 0; 446 regs->tstate &= ~TSTATE_PEF; 447 } 448 out: 449 return error; 450 } 451 452 #ifdef CONFIG_MODULES 453 454 asmlinkage long sys32_init_module(void __user *umod, u32 len, 455 const char __user *uargs) 456 { 457 return sys_init_module(umod, len, uargs); 458 } 459 460 asmlinkage long sys32_delete_module(const char __user *name_user, 461 unsigned int flags) 462 { 463 return sys_delete_module(name_user, flags); 464 } 465 466 #else /* CONFIG_MODULES */ 467 468 asmlinkage long sys32_init_module(const char __user *name_user, 469 struct module __user *mod_user) 470 { 471 return -ENOSYS; 472 } 473 474 asmlinkage long sys32_delete_module(const char __user *name_user) 475 { 476 return -ENOSYS; 477 } 478 479 #endif /* CONFIG_MODULES */ 480 481 asmlinkage compat_ssize_t sys32_pread64(unsigned int fd, 482 char __user *ubuf, 483 compat_size_t count, 484 unsigned long poshi, 485 unsigned long poslo) 486 { 487 return sys_pread64(fd, ubuf, count, (poshi << 32) | poslo); 488 } 489 490 asmlinkage compat_ssize_t sys32_pwrite64(unsigned int fd, 491 char __user *ubuf, 492 compat_size_t count, 493 unsigned long poshi, 494 unsigned long poslo) 495 { 496 return sys_pwrite64(fd, ubuf, count, (poshi << 32) | poslo); 497 } 498 499 asmlinkage long compat_sys_readahead(int fd, 500 unsigned long offhi, 501 unsigned long offlo, 502 compat_size_t count) 503 { 504 return sys_readahead(fd, (offhi << 32) | offlo, count); 505 } 506 507 long compat_sys_fadvise64(int fd, 508 unsigned long offhi, 509 unsigned long offlo, 510 compat_size_t len, int advice) 511 { 512 return sys_fadvise64_64(fd, (offhi << 32) | offlo, len, advice); 513 } 514 515 long compat_sys_fadvise64_64(int fd, 516 unsigned long offhi, unsigned long offlo, 517 unsigned long lenhi, unsigned long lenlo, 518 int advice) 519 { 520 return sys_fadvise64_64(fd, 521 (offhi << 32) | offlo, 522 (lenhi << 32) | lenlo, 523 advice); 524 } 525 526 asmlinkage long compat_sys_sendfile(int out_fd, int in_fd, 527 compat_off_t __user *offset, 528 compat_size_t count) 529 { 530 mm_segment_t old_fs = get_fs(); 531 int ret; 532 off_t of; 533 534 if (offset && get_user(of, offset)) 535 return -EFAULT; 536 537 set_fs(KERNEL_DS); 538 ret = sys_sendfile(out_fd, in_fd, 539 offset ? (off_t __user *) &of : NULL, 540 count); 541 set_fs(old_fs); 542 543 if (offset && put_user(of, offset)) 544 return -EFAULT; 545 546 return ret; 547 } 548 549 asmlinkage long compat_sys_sendfile64(int out_fd, int in_fd, 550 compat_loff_t __user *offset, 551 compat_size_t count) 552 { 553 mm_segment_t old_fs = get_fs(); 554 int ret; 555 loff_t lof; 556 557 if (offset && get_user(lof, offset)) 558 return -EFAULT; 559 560 set_fs(KERNEL_DS); 561 ret = sys_sendfile64(out_fd, in_fd, 562 offset ? (loff_t __user *) &lof : NULL, 563 count); 564 set_fs(old_fs); 565 566 if (offset && put_user(lof, offset)) 567 return -EFAULT; 568 569 return ret; 570 } 571 572 /* This is just a version for 32-bit applications which does 573 * not force O_LARGEFILE on. 574 */ 575 576 asmlinkage long sparc32_open(const char __user *filename, 577 int flags, int mode) 578 { 579 return do_sys_open(AT_FDCWD, filename, flags, mode); 580 } 581 582 extern unsigned long do_mremap(unsigned long addr, 583 unsigned long old_len, unsigned long new_len, 584 unsigned long flags, unsigned long new_addr); 585 586 asmlinkage unsigned long sys32_mremap(unsigned long addr, 587 unsigned long old_len, unsigned long new_len, 588 unsigned long flags, u32 __new_addr) 589 { 590 unsigned long ret = -EINVAL; 591 unsigned long new_addr = __new_addr; 592 593 if (unlikely(sparc_mmap_check(addr, old_len))) 594 goto out; 595 if (unlikely(sparc_mmap_check(new_addr, new_len))) 596 goto out; 597 down_write(¤t->mm->mmap_sem); 598 ret = do_mremap(addr, old_len, new_len, flags, new_addr); 599 up_write(¤t->mm->mmap_sem); 600 out: 601 return ret; 602 } 603 604 struct __sysctl_args32 { 605 u32 name; 606 int nlen; 607 u32 oldval; 608 u32 oldlenp; 609 u32 newval; 610 u32 newlen; 611 u32 __unused[4]; 612 }; 613 614 asmlinkage long sys32_sysctl(struct __sysctl_args32 __user *args) 615 { 616 #ifndef CONFIG_SYSCTL_SYSCALL 617 return -ENOSYS; 618 #else 619 struct __sysctl_args32 tmp; 620 int error; 621 size_t oldlen, __user *oldlenp = NULL; 622 unsigned long addr = (((unsigned long)&args->__unused[0]) + 7UL) & ~7UL; 623 624 if (copy_from_user(&tmp, args, sizeof(tmp))) 625 return -EFAULT; 626 627 if (tmp.oldval && tmp.oldlenp) { 628 /* Duh, this is ugly and might not work if sysctl_args 629 is in read-only memory, but do_sysctl does indirectly 630 a lot of uaccess in both directions and we'd have to 631 basically copy the whole sysctl.c here, and 632 glibc's __sysctl uses rw memory for the structure 633 anyway. */ 634 if (get_user(oldlen, (u32 __user *)(unsigned long)tmp.oldlenp) || 635 put_user(oldlen, (size_t __user *)addr)) 636 return -EFAULT; 637 oldlenp = (size_t __user *)addr; 638 } 639 640 lock_kernel(); 641 error = do_sysctl((int __user *)(unsigned long) tmp.name, 642 tmp.nlen, 643 (void __user *)(unsigned long) tmp.oldval, 644 oldlenp, 645 (void __user *)(unsigned long) tmp.newval, 646 tmp.newlen); 647 unlock_kernel(); 648 if (oldlenp) { 649 if (!error) { 650 if (get_user(oldlen, (size_t __user *)addr) || 651 put_user(oldlen, (u32 __user *)(unsigned long) tmp.oldlenp)) 652 error = -EFAULT; 653 } 654 if (copy_to_user(args->__unused, tmp.__unused, sizeof(tmp.__unused))) 655 error = -EFAULT; 656 } 657 return error; 658 #endif 659 } 660 661 long sys32_lookup_dcookie(unsigned long cookie_high, 662 unsigned long cookie_low, 663 char __user *buf, size_t len) 664 { 665 return sys_lookup_dcookie((cookie_high << 32) | cookie_low, 666 buf, len); 667 } 668 669 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) 670 { 671 return sys_sync_file_range(fd, 672 (off_high << 32) | off_low, 673 (nb_high << 32) | nb_low, 674 flags); 675 } 676 677 asmlinkage long compat_sys_fallocate(int fd, int mode, u32 offhi, u32 offlo, 678 u32 lenhi, u32 lenlo) 679 { 680 return sys_fallocate(fd, mode, ((loff_t)offhi << 32) | offlo, 681 ((loff_t)lenhi << 32) | lenlo); 682 } 683