arch/mips/kernel/linux32.c

   1 /*
   2  * Conversion between 32-bit and 64-bit native system calls.
   3  *
   4  * Copyright (C) 2000 Silicon Graphics, Inc.
   5  * Written by Ulf Carlsson (ulfc@engr.sgi.com)
   6  * sys32_execve from ia64/ia32 code, Feb 2000, Kanoj Sarcar (kanoj@sgi.com)
   7  */
   8 #include <linux/compiler.h>
   9 #include <linux/mm.h>
  10 #include <linux/errno.h>
  11 #include <linux/file.h>
  12 #include <linux/smp_lock.h>
  13 #include <linux/highuid.h>
  14 #include <linux/dirent.h>
  15 #include <linux/resource.h>
  16 #include <linux/highmem.h>
  17 #include <linux/time.h>
  18 #include <linux/times.h>
  19 #include <linux/poll.h>
  20 #include <linux/slab.h>
  21 #include <linux/skbuff.h>
  22 #include <linux/filter.h>
  23 #include <linux/shm.h>
  24 #include <linux/sem.h>
  25 #include <linux/msg.h>
  26 #include <linux/icmpv6.h>
  27 #include <linux/syscalls.h>
  28 #include <linux/sysctl.h>
  29 #include <linux/utime.h>
  30 #include <linux/utsname.h>
  31 #include <linux/personality.h>
  32 #include <linux/dnotify.h>
  33 #include <linux/module.h>
  34 #include <linux/binfmts.h>
  35 #include <linux/security.h>
  36 #include <linux/compat.h>
  37 #include <linux/vfs.h>
  38
  39 #include <net/sock.h>
  40 #include <net/scm.h>
  41
  42 #include <asm/ipc.h>
  43 #include <asm/sim.h>
  44 #include <asm/uaccess.h>
  45 #include <asm/mmu_context.h>
  46 #include <asm/mman.h>
  47
  48 /* Use this to get at 32-bit user passed pointers. */
  49 /* A() macro should be used for places where you e.g.
  50    have some internal variable u32 and just want to get
  51    rid of a compiler warning. AA() has to be used in
  52    places where you want to convert a function argument
  53    to 32bit pointer or when you e.g. access pt_regs
  54    structure and want to consider 32bit registers only.
  55  */
  56 #define A(__x) ((unsigned long)(__x))
  57 #define AA(__x) ((unsigned long)((int)__x))
  58
  59 #ifdef __MIPSEB__
  60 #define merge_64(r1,r2) ((((r1) & 0xffffffffUL) << 32) + ((r2) & 0xffffffffUL))
  61 #endif
  62 #ifdef __MIPSEL__
  63 #define merge_64(r1,r2) ((((r2) & 0xffffffffUL) << 32) + ((r1) & 0xffffffffUL))
  64 #endif
  65
  66 /*
  67  * Revalidate the inode. This is required for proper NFS attribute caching.
  68  */
  69
  70 int cp_compat_stat(struct kstat *stat, struct compat_stat __user *statbuf)
  71 {
  72         struct compat_stat tmp;
  73
  74         if (!new_valid_dev(stat->dev) || !new_valid_dev(stat->rdev))
  75                 return -EOVERFLOW;
  76
  77         memset(&tmp, 0, sizeof(tmp));
  78         tmp.st_dev = new_encode_dev(stat->dev);
  79         tmp.st_ino = stat->ino;
  80         if (sizeof(tmp.st_ino) < sizeof(stat->ino) && tmp.st_ino != stat->ino)
  81                 return -EOVERFLOW;
  82         tmp.st_mode = stat->mode;
  83         tmp.st_nlink = stat->nlink;
  84         SET_UID(tmp.st_uid, stat->uid);
  85         SET_GID(tmp.st_gid, stat->gid);
  86         tmp.st_rdev = new_encode_dev(stat->rdev);
  87         tmp.st_size = stat->size;
  88         tmp.st_atime = stat->atime.tv_sec;
  89         tmp.st_mtime = stat->mtime.tv_sec;
  90         tmp.st_ctime = stat->ctime.tv_sec;
  91 #ifdef STAT_HAVE_NSEC
  92         tmp.st_atime_nsec = stat->atime.tv_nsec;
  93         tmp.st_mtime_nsec = stat->mtime.tv_nsec;
  94         tmp.st_ctime_nsec = stat->ctime.tv_nsec;
  95 #endif
  96         tmp.st_blocks = stat->blocks;
  97         tmp.st_blksize = stat->blksize;
  98         return copy_to_user(statbuf,&tmp,sizeof(tmp)) ? -EFAULT : 0;
  99 }
 100
 101 asmlinkage unsigned long
 102 sys32_mmap2(unsigned long addr, unsigned long len, unsigned long prot,
 103          unsigned long flags, unsigned long fd, unsigned long pgoff)
 104 {
 105         struct file * file = NULL;
 106         unsigned long error;
 107
 108         error = -EINVAL;
 109         if (pgoff & (~PAGE_MASK >> 12))
 110                 goto out;
 111         pgoff >>= PAGE_SHIFT-12;
 112
 113         if (!(flags & MAP_ANONYMOUS)) {
 114                 error = -EBADF;
 115                 file = fget(fd);
 116                 if (!file)
 117                         goto out;
 118         }
 119         flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
 120
 121         down_write(&current->mm->mmap_sem);
 122         error = do_mmap_pgoff(file, addr, len, prot, flags, pgoff);
 123         up_write(&current->mm->mmap_sem);
 124         if (file)
 125                 fput(file);
 126
 127 out:
 128         return error;
 129 }
 130
 131
 132 asmlinkage int sys_truncate64(const char __user *path, unsigned int high,
 133                               unsigned int low)
 134 {
 135         if ((int)high < 0)
 136                 return -EINVAL;
 137         return sys_truncate(path, ((long) high << 32) | low);
 138 }
 139
 140 asmlinkage int sys_ftruncate64(unsigned int fd, unsigned int high,
 141                                unsigned int low)
 142 {
 143         if ((int)high < 0)
 144                 return -EINVAL;
 145         return sys_ftruncate(fd, ((long) high << 32) | low);
 146 }
 147
 148 /*
 149  * sys_execve() executes a new program.
 150  */
 151 asmlinkage int sys32_execve(nabi_no_regargs struct pt_regs regs)
 152 {
 153         int error;
 154         char * filename;
 155
 156         filename = getname(compat_ptr(regs.regs[4]));
 157         error = PTR_ERR(filename);
 158         if (IS_ERR(filename))
 159                 goto out;
 160         error = compat_do_execve(filename, compat_ptr(regs.regs[5]),
 161                                  compat_ptr(regs.regs[6]), &regs);
 162         putname(filename);
 163
 164 out:
 165         return error;
 166 }
 167
 168 asmlinkage long
 169 sysn32_waitid(int which, compat_pid_t pid,
 170               siginfo_t __user *uinfo, int options,
 171               struct compat_rusage __user *uru)
 172 {
 173         struct rusage ru;
 174         long ret;
 175         mm_segment_t old_fs = get_fs();
 176         int si_signo;
 177
 178         if (!access_ok(VERIFY_WRITE, uinfo, sizeof(*uinfo)))
 179                 return -EFAULT;
 180
 181         set_fs (KERNEL_DS);
 182         ret = sys_waitid(which, pid, uinfo, options,
 183                          uru ? (struct rusage __user *) &ru : NULL);
 184         set_fs (old_fs);
 185
 186         if (__get_user(si_signo, &uinfo->si_signo))
 187                 return -EFAULT;
 188         if (ret < 0 || si_signo == 0)
 189                 return ret;
 190
 191         if (uru)
 192                 ret = put_compat_rusage(&ru, uru);
 193         return ret;
 194 }
 195
 196 struct sysinfo32 {
 197         s32 uptime;
 198         u32 loads[3];
 199         u32 totalram;
 200         u32 freeram;
 201         u32 sharedram;
 202         u32 bufferram;
 203         u32 totalswap;
 204         u32 freeswap;
 205         u16 procs;
 206         u32 totalhigh;
 207         u32 freehigh;
 208         u32 mem_unit;
 209         char _f[8];
 210 };
 211
 212 asmlinkage int sys32_sysinfo(struct sysinfo32 __user *info)
 213 {
 214         struct sysinfo s;
 215         int ret, err;
 216         mm_segment_t old_fs = get_fs ();
 217
 218         set_fs (KERNEL_DS);
 219         ret = sys_sysinfo((struct sysinfo __user *)&s);
 220         set_fs (old_fs);
 221         err = put_user (s.uptime, &info->uptime);
 222         err |= __put_user (s.loads[0], &info->loads[0]);
 223         err |= __put_user (s.loads[1], &info->loads[1]);
 224         err |= __put_user (s.loads[2], &info->loads[2]);
 225         err |= __put_user (s.totalram, &info->totalram);
 226         err |= __put_user (s.freeram, &info->freeram);
 227         err |= __put_user (s.sharedram, &info->sharedram);
 228         err |= __put_user (s.bufferram, &info->bufferram);
 229         err |= __put_user (s.totalswap, &info->totalswap);
 230         err |= __put_user (s.freeswap, &info->freeswap);
 231         err |= __put_user (s.procs, &info->procs);
 232         err |= __put_user (s.totalhigh, &info->totalhigh);
 233         err |= __put_user (s.freehigh, &info->freehigh);
 234         err |= __put_user (s.mem_unit, &info->mem_unit);
 235         if (err)
 236                 return -EFAULT;
 237         return ret;
 238 }
 239
 240 #define RLIM_INFINITY32 0x7fffffff
 241 #define RESOURCE32(x) ((x > RLIM_INFINITY32) ? RLIM_INFINITY32 : x)
 242
 243 struct rlimit32 {
 244         int     rlim_cur;
 245         int     rlim_max;
 246 };
 247
 248 #ifdef __MIPSEB__
 249 asmlinkage long sys32_truncate64(const char __user * path, unsigned long __dummy,
 250         int length_hi, int length_lo)
 251 #endif
 252 #ifdef __MIPSEL__
 253 asmlinkage long sys32_truncate64(const char __user * path, unsigned long __dummy,
 254         int length_lo, int length_hi)
 255 #endif
 256 {
 257         loff_t length;
 258
 259         length = ((unsigned long) length_hi << 32) | (unsigned int) length_lo;
 260
 261         return sys_truncate(path, length);
 262 }
 263
 264 #ifdef __MIPSEB__
 265 asmlinkage long sys32_ftruncate64(unsigned int fd, unsigned long __dummy,
 266         int length_hi, int length_lo)
 267 #endif
 268 #ifdef __MIPSEL__
 269 asmlinkage long sys32_ftruncate64(unsigned int fd, unsigned long __dummy,
 270         int length_lo, int length_hi)
 271 #endif
 272 {
 273         loff_t length;
 274
 275         length = ((unsigned long) length_hi << 32) | (unsigned int) length_lo;
 276
 277         return sys_ftruncate(fd, length);
 278 }
 279
 280 static inline long
 281 get_tv32(struct timeval *o, struct compat_timeval __user *i)
 282 {
 283         return (!access_ok(VERIFY_READ, i, sizeof(*i)) ||
 284                 (__get_user(o->tv_sec, &i->tv_sec) |
 285                  __get_user(o->tv_usec, &i->tv_usec)));
 286 }
 287
 288 static inline long
 289 put_tv32(struct compat_timeval __user *o, struct timeval *i)
 290 {
 291         return (!access_ok(VERIFY_WRITE, o, sizeof(*o)) ||
 292                 (__put_user(i->tv_sec, &o->tv_sec) |
 293                  __put_user(i->tv_usec, &o->tv_usec)));
 294 }
 295
 296 extern struct timezone sys_tz;
 297
 298 asmlinkage int
 299 sys32_gettimeofday(struct compat_timeval __user *tv, struct timezone __user *tz)
 300 {
 301         if (tv) {
 302                 struct timeval ktv;
 303                 do_gettimeofday(&ktv);
 304                 if (put_tv32(tv, &ktv))
 305                         return -EFAULT;
 306         }
 307         if (tz) {
 308                 if (copy_to_user(tz, &sys_tz, sizeof(sys_tz)))
 309                         return -EFAULT;
 310         }
 311         return 0;
 312 }
 313
 314 static inline long get_ts32(struct timespec *o, struct compat_timeval __user *i)
 315 {
 316         long usec;
 317
 318         if (!access_ok(VERIFY_READ, i, sizeof(*i)))
 319                 return -EFAULT;
 320         if (__get_user(o->tv_sec, &i->tv_sec))
 321                 return -EFAULT;
 322         if (__get_user(usec, &i->tv_usec))
 323                 return -EFAULT;
 324         o->tv_nsec = usec * 1000;
 325                 return 0;
 326 }
 327
 328 asmlinkage int
 329 sys32_settimeofday(struct compat_timeval __user *tv, struct timezone __user *tz)
 330 {
 331         struct timespec kts;
 332         struct timezone ktz;
 333
 334         if (tv) {
 335                 if (get_ts32(&kts, tv))
 336                         return -EFAULT;
 337         }
 338         if (tz) {
 339                 if (copy_from_user(&ktz, tz, sizeof(ktz)))
 340                         return -EFAULT;
 341         }
 342
 343         return do_sys_settimeofday(tv ? &kts : NULL, tz ? &ktz : NULL);
 344 }
 345
 346 asmlinkage int sys32_llseek(unsigned int fd, unsigned int offset_high,
 347                             unsigned int offset_low, loff_t __user * result,
 348                             unsigned int origin)
 349 {
 350         return sys_llseek(fd, offset_high, offset_low, result, origin);
 351 }
 352
 353 /* From the Single Unix Spec: pread & pwrite act like lseek to pos + op +
 354    lseek back to original location.  They fail just like lseek does on
 355    non-seekable files.  */
 356
 357 asmlinkage ssize_t sys32_pread(unsigned int fd, char __user * buf,
 358                                size_t count, u32 unused, u64 a4, u64 a5)
 359 {
 360         return sys_pread64(fd, buf, count, merge_64(a4, a5));
 361 }
 362
 363 asmlinkage ssize_t sys32_pwrite(unsigned int fd, const char __user * buf,
 364                                 size_t count, u32 unused, u64 a4, u64 a5)
 365 {
 366         return sys_pwrite64(fd, buf, count, merge_64(a4, a5));
 367 }
 368
 369 asmlinkage int sys32_sched_rr_get_interval(compat_pid_t pid,
 370         struct compat_timespec __user *interval)
 371 {
 372         struct timespec t;
 373         int ret;
 374         mm_segment_t old_fs = get_fs ();
 375
 376         set_fs (KERNEL_DS);
 377         ret = sys_sched_rr_get_interval(pid, (struct timespec __user *)&t);
 378         set_fs (old_fs);
 379         if (put_user (t.tv_sec, &interval->tv_sec) ||
 380             __put_user (t.tv_nsec, &interval->tv_nsec))
 381                 return -EFAULT;
 382         return ret;
 383 }
 384
 385 asmlinkage long
 386 sys32_ipc (u32 call, int first, int second, int third, u32 ptr, u32 fifth)
 387 {
 388         int version, err;
 389
 390         version = call >> 16; /* hack for backward compatibility */
 391         call &= 0xffff;
 392
 393         switch (call) {
 394         case SEMOP:
 395                 /* struct sembuf is the same on 32 and 64bit :)) */
 396                 err = sys_semtimedop(first, compat_ptr(ptr), second, NULL);
 397                 break;
 398         case SEMTIMEDOP:
 399                 err = compat_sys_semtimedop(first, compat_ptr(ptr), second,
 400                                             compat_ptr(fifth));
 401                 break;
 402         case SEMGET:
 403                 err = sys_semget(first, second, third);
 404                 break;
 405         case SEMCTL:
 406                 err = compat_sys_semctl(first, second, third, compat_ptr(ptr));
 407                 break;
 408         case MSGSND:
 409                 err = compat_sys_msgsnd(first, second, third, compat_ptr(ptr));
 410                 break;
 411         case MSGRCV:
 412                 err = compat_sys_msgrcv(first, second, fifth, third,
 413                                         version, compat_ptr(ptr));
 414                 break;
 415         case MSGGET:
 416                 err = sys_msgget((key_t) first, second);
 417                 break;
 418         case MSGCTL:
 419                 err = compat_sys_msgctl(first, second, compat_ptr(ptr));
 420                 break;
 421         case SHMAT:
 422                 err = compat_sys_shmat(first, second, third, version,
 423                                        compat_ptr(ptr));
 424                 break;
 425         case SHMDT:
 426                 err = sys_shmdt(compat_ptr(ptr));
 427                 break;
 428         case SHMGET:
 429                 err = sys_shmget(first, (unsigned)second, third);
 430                 break;
 431         case SHMCTL:
 432                 err = compat_sys_shmctl(first, second, compat_ptr(ptr));
 433                 break;
 434         default:
 435                 err = -EINVAL;
 436                 break;
 437         }
 438
 439         return err;
 440 }
 441
 442 #ifdef CONFIG_MIPS32_N32
 443 asmlinkage long sysn32_semctl(int semid, int semnum, int cmd, union semun arg)
 444 {
 445         /* compat_sys_semctl expects a pointer to union semun */
 446         u32 __user *uptr = compat_alloc_user_space(sizeof(u32));
 447         if (put_user(ptr_to_compat(arg.__pad), uptr))
 448                 return -EFAULT;
 449         return compat_sys_semctl(semid, semnum, cmd, uptr);
 450 }
 451 #endif
 452
 453 struct sysctl_args32
 454 {
 455         compat_caddr_t name;
 456         int nlen;
 457         compat_caddr_t oldval;
 458         compat_caddr_t oldlenp;
 459         compat_caddr_t newval;
 460         compat_size_t newlen;
 461         unsigned int __unused[4];
 462 };
 463
 464 #ifdef CONFIG_SYSCTL_SYSCALL
 465
 466 asmlinkage long sys32_sysctl(struct sysctl_args32 __user *args)
 467 {
 468         struct sysctl_args32 tmp;
 469         int error;
 470         size_t oldlen;
 471         size_t __user *oldlenp = NULL;
 472         unsigned long addr = (((unsigned long)&args->__unused[0]) + 7) & ~7;
 473
 474         if (copy_from_user(&tmp, args, sizeof(tmp)))
 475                 return -EFAULT;
 476
 477         if (tmp.oldval && tmp.oldlenp) {
 478                 /* Duh, this is ugly and might not work if sysctl_args
 479                    is in read-only memory, but do_sysctl does indirectly
 480                    a lot of uaccess in both directions and we'd have to
 481                    basically copy the whole sysctl.c here, and
 482                    glibc's __sysctl uses rw memory for the structure
 483                    anyway.  */
 484                 if (get_user(oldlen, (u32 __user *)A(tmp.oldlenp)) ||
 485                     put_user(oldlen, (size_t __user *)addr))
 486                         return -EFAULT;
 487                 oldlenp = (size_t __user *)addr;
 488         }
 489
 490         lock_kernel();
 491         error = do_sysctl((int __user *)A(tmp.name), tmp.nlen, (void __user *)A(tmp.oldval),
 492                           oldlenp, (void __user *)A(tmp.newval), tmp.newlen);
 493         unlock_kernel();
 494         if (oldlenp) {
 495                 if (!error) {
 496                         if (get_user(oldlen, (size_t __user *)addr) ||
 497                             put_user(oldlen, (u32 __user *)A(tmp.oldlenp)))
 498                                 error = -EFAULT;
 499                 }
 500                 copy_to_user(args->__unused, tmp.__unused, sizeof(tmp.__unused));
 501         }
 502         return error;
 503 }
 504
 505 #endif /* CONFIG_SYSCTL_SYSCALL */
 506
 507 asmlinkage long sys32_newuname(struct new_utsname __user * name)
 508 {
 509         int ret = 0;
 510
 511         down_read(&uts_sem);
 512         if (copy_to_user(name, utsname(), sizeof *name))
 513                 ret = -EFAULT;
 514         up_read(&uts_sem);
 515
 516         if (current->personality == PER_LINUX32 && !ret)
 517                 if (copy_to_user(name->machine, "mips\0\0\0", 8))
 518                         ret = -EFAULT;
 519
 520         return ret;
 521 }
 522
 523 asmlinkage int sys32_personality(unsigned long personality)
 524 {
 525         int ret;
 526         personality &= 0xffffffff;
 527         if (personality(current->personality) == PER_LINUX32 &&
 528             personality == PER_LINUX)
 529                 personality = PER_LINUX32;
 530         ret = sys_personality(personality);
 531         if (ret == PER_LINUX32)
 532                 ret = PER_LINUX;
 533         return ret;
 534 }
 535
 536 /* ustat compatibility */
 537 struct ustat32 {
 538         compat_daddr_t  f_tfree;
 539         compat_ino_t    f_tinode;
 540         char            f_fname[6];
 541         char            f_fpack[6];
 542 };
 543
 544 extern asmlinkage long sys_ustat(dev_t dev, struct ustat __user * ubuf);
 545
 546 asmlinkage int sys32_ustat(dev_t dev, struct ustat32 __user * ubuf32)
 547 {
 548         int err;
 549         struct ustat tmp;
 550         struct ustat32 tmp32;
 551         mm_segment_t old_fs = get_fs();
 552
 553         set_fs(KERNEL_DS);
 554         err = sys_ustat(dev, (struct ustat __user *)&tmp);
 555         set_fs (old_fs);
 556
 557         if (err)
 558                 goto out;
 559
 560         memset(&tmp32,0,sizeof(struct ustat32));
 561         tmp32.f_tfree = tmp.f_tfree;
 562         tmp32.f_tinode = tmp.f_tinode;
 563
 564         err = copy_to_user(ubuf32,&tmp32,sizeof(struct ustat32)) ? -EFAULT : 0;
 565
 566 out:
 567         return err;
 568 }
 569
 570 asmlinkage int sys32_sendfile(int out_fd, int in_fd, compat_off_t __user *offset,
 571         s32 count)
 572 {
 573         mm_segment_t old_fs = get_fs();
 574         int ret;
 575         off_t of;
 576
 577         if (offset && get_user(of, offset))
 578                 return -EFAULT;
 579
 580         set_fs(KERNEL_DS);
 581         ret = sys_sendfile(out_fd, in_fd, offset ? (off_t __user *)&of : NULL, count);
 582         set_fs(old_fs);
 583
 584         if (offset && put_user(of, offset))
 585                 return -EFAULT;
 586
 587         return ret;
 588 }
 589
 590 asmlinkage ssize_t sys32_readahead(int fd, u32 pad0, u64 a2, u64 a3,
 591                                    size_t count)
 592 {
 593         return sys_readahead(fd, merge_64(a2, a3), count);
 594 }
 595
 596 asmlinkage long sys32_sync_file_range(int fd, int __pad,
 597         unsigned long a2, unsigned long a3,
 598         unsigned long a4, unsigned long a5,
 599         int flags)
 600 {
 601         return sys_sync_file_range(fd,
 602                         merge_64(a2, a3), merge_64(a4, a5),
 603                         flags);
 604 }
 605
 606 /* Argument list sizes for sys_socketcall */
 607 #define AL(x) ((x) * sizeof(unsigned int))
 608 static unsigned char socketcall_nargs[18]={AL(0),AL(3),AL(3),AL(3),AL(2),AL(3),
 609                                 AL(3),AL(3),AL(4),AL(4),AL(4),AL(6),
 610                                 AL(6),AL(2),AL(5),AL(5),AL(3),AL(3)};
 611 #undef AL
 612
 613 /*
 614  *      System call vectors.
 615  *
 616  *      Argument checking cleaned up. Saved 20% in size.
 617  *  This function doesn't need to set the kernel lock because
 618  *  it is set by the callees.
 619  */
 620
 621 asmlinkage long sys32_socketcall(int call, unsigned int __user *args32)
 622 {
 623         unsigned int a[6];
 624         unsigned int a0,a1;
 625         int err;
 626
 627         extern asmlinkage long sys_socket(int family, int type, int protocol);
 628         extern asmlinkage long sys_bind(int fd, struct sockaddr __user *umyaddr, int addrlen);
 629         extern asmlinkage long sys_connect(int fd, struct sockaddr __user *uservaddr, int addrlen);
 630         extern asmlinkage long sys_listen(int fd, int backlog);
 631         extern asmlinkage long sys_accept(int fd, struct sockaddr __user *upeer_sockaddr, int __user *upeer_addrlen);
 632         extern asmlinkage long sys_getsockname(int fd, struct sockaddr __user *usockaddr, int __user *usockaddr_len);
 633         extern asmlinkage long sys_getpeername(int fd, struct sockaddr __user *usockaddr, int __user *usockaddr_len);
 634         extern asmlinkage long sys_socketpair(int family, int type, int protocol, int __user *usockvec);
 635         extern asmlinkage long sys_send(int fd, void __user * buff, size_t len, unsigned flags);
 636         extern asmlinkage long sys_sendto(int fd, void __user * buff, size_t len, unsigned flags,
 637                                           struct sockaddr __user *addr, int addr_len);
 638         extern asmlinkage long sys_recv(int fd, void __user * ubuf, size_t size, unsigned flags);
 639         extern asmlinkage long sys_recvfrom(int fd, void __user * ubuf, size_t size, unsigned flags,
 640                                             struct sockaddr __user *addr, int __user *addr_len);
 641         extern asmlinkage long sys_shutdown(int fd, int how);
 642         extern asmlinkage long sys_setsockopt(int fd, int level, int optname, char __user *optval, int optlen);
 643         extern asmlinkage long sys_getsockopt(int fd, int level, int optname, char __user *optval, int __user *optlen);
 644         extern asmlinkage long sys_sendmsg(int fd, struct msghdr __user *msg, unsigned flags);
 645         extern asmlinkage long sys_recvmsg(int fd, struct msghdr __user *msg, unsigned int flags);
 646
 647
 648         if(call<1||call>SYS_RECVMSG)
 649                 return -EINVAL;
 650
 651         /* copy_from_user should be SMP safe. */
 652         if (copy_from_user(a, args32, socketcall_nargs[call]))
 653                 return -EFAULT;
 654
 655         a0=a[0];
 656         a1=a[1];
 657
 658         switch(call)
 659         {
 660                 case SYS_SOCKET:
 661                         err = sys_socket(a0,a1,a[2]);
 662                         break;
 663                 case SYS_BIND:
 664                         err = sys_bind(a0,(struct sockaddr __user *)A(a1), a[2]);
 665                         break;
 666                 case SYS_CONNECT:
 667                         err = sys_connect(a0, (struct sockaddr __user *)A(a1), a[2]);
 668                         break;
 669                 case SYS_LISTEN:
 670                         err = sys_listen(a0,a1);
 671                         break;
 672                 case SYS_ACCEPT:
 673                         err = sys_accept(a0,(struct sockaddr __user *)A(a1), (int __user *)A(a[2]));
 674                         break;
 675                 case SYS_GETSOCKNAME:
 676                         err = sys_getsockname(a0,(struct sockaddr __user *)A(a1), (int __user *)A(a[2]));
 677                         break;
 678                 case SYS_GETPEERNAME:
 679                         err = sys_getpeername(a0, (struct sockaddr __user *)A(a1), (int __user *)A(a[2]));
 680                         break;
 681                 case SYS_SOCKETPAIR:
 682                         err = sys_socketpair(a0,a1, a[2], (int __user *)A(a[3]));
 683                         break;
 684                 case SYS_SEND:
 685                         err = sys_send(a0, (void __user *)A(a1), a[2], a[3]);
 686                         break;
 687                 case SYS_SENDTO:
 688                         err = sys_sendto(a0,(void __user *)A(a1), a[2], a[3],
 689                                          (struct sockaddr __user *)A(a[4]), a[5]);
 690                         break;
 691                 case SYS_RECV:
 692                         err = sys_recv(a0, (void __user *)A(a1), a[2], a[3]);
 693                         break;
 694                 case SYS_RECVFROM:
 695                         err = sys_recvfrom(a0, (void __user *)A(a1), a[2], a[3],
 696                                            (struct sockaddr __user *)A(a[4]), (int __user *)A(a[5]));
 697                         break;
 698                 case SYS_SHUTDOWN:
 699                         err = sys_shutdown(a0,a1);
 700                         break;
 701                 case SYS_SETSOCKOPT:
 702                         err = sys_setsockopt(a0, a1, a[2], (char __user *)A(a[3]), a[4]);
 703                         break;
 704                 case SYS_GETSOCKOPT:
 705                         err = sys_getsockopt(a0, a1, a[2], (char __user *)A(a[3]), (int __user *)A(a[4]));
 706                         break;
 707                 case SYS_SENDMSG:
 708                         err = sys_sendmsg(a0, (struct msghdr __user *) A(a1), a[2]);
 709                         break;
 710                 case SYS_RECVMSG:
 711                         err = sys_recvmsg(a0, (struct msghdr __user *) A(a1), a[2]);
 712                         break;
 713                 default:
 714                         err = -EINVAL;
 715                         break;
 716         }
 717         return err;
 718 }
 719
 720 struct sigevent32 {
 721         u32 sigev_value;
 722         u32 sigev_signo;
 723         u32 sigev_notify;
 724         u32 payload[(64 / 4) - 3];
 725 };
 726
 727 extern asmlinkage long
 728 sys_timer_create(clockid_t which_clock,
 729                  struct sigevent __user *timer_event_spec,
 730                  timer_t __user * created_timer_id);
 731
 732 long
 733 sys32_timer_create(u32 clock, struct sigevent32 __user *se32, timer_t __user *timer_id)
 734 {
 735         struct sigevent __user *p = NULL;
 736         if (se32) {
 737                 struct sigevent se;
 738                 p = compat_alloc_user_space(sizeof(struct sigevent));
 739                 memset(&se, 0, sizeof(struct sigevent));
 740                 if (get_user(se.sigev_value.sival_int,  &se32->sigev_value) ||
 741                     __get_user(se.sigev_signo, &se32->sigev_signo) ||
 742                     __get_user(se.sigev_notify, &se32->sigev_notify) ||
 743                     __copy_from_user(&se._sigev_un._pad, &se32->payload,
 744                                      sizeof(se32->payload)) ||
 745                     copy_to_user(p, &se, sizeof(se)))
 746                         return -EFAULT;
 747         }
 748         return sys_timer_create(clock, p, timer_id);
 749 }
 750
 751 save_static_function(sys32_clone);
 752 __attribute_used__ noinline static int
 753 _sys32_clone(nabi_no_regargs struct pt_regs regs)
 754 {
 755         unsigned long clone_flags;
 756         unsigned long newsp;
 757         int __user *parent_tidptr, *child_tidptr;
 758
 759         clone_flags = regs.regs[4];
 760         newsp = regs.regs[5];
 761         if (!newsp)
 762                 newsp = regs.regs[29];
 763         parent_tidptr = (int __user *) regs.regs[6];
 764
 765         /* Use __dummy4 instead of getting it off the stack, so that
 766            syscall() works.  */
 767         child_tidptr = (int __user *) __dummy4;
 768         return do_fork(clone_flags, newsp, &regs, 0,
 769                        parent_tidptr, child_tidptr);
 770 }