arch/mips/kernel/sysirix.c

   1 /*
   2  * sysirix.c: IRIX system call emulation.
   3  *
   4  * Copyright (C) 1996 David S. Miller
   5  * Copyright (C) 1997 Miguel de Icaza
   6  * Copyright (C) 1997, 1998, 1999, 2000 Ralf Baechle
   7  */
   8 #include <linux/kernel.h>
   9 #include <linux/sched.h>
  10 #include <linux/binfmts.h>
  11 #include <linux/highuid.h>
  12 #include <linux/pagemap.h>
  13 #include <linux/mm.h>
  14 #include <linux/mman.h>
  15 #include <linux/slab.h>
  16 #include <linux/swap.h>
  17 #include <linux/errno.h>
  18 #include <linux/time.h>
  19 #include <linux/timex.h>
  20 #include <linux/times.h>
  21 #include <linux/elf.h>
  22 #include <linux/msg.h>
  23 #include <linux/shm.h>
  24 #include <linux/smp.h>
  25 #include <linux/smp_lock.h>
  26 #include <linux/utsname.h>
  27 #include <linux/file.h>
  28 #include <linux/vfs.h>
  29 #include <linux/namei.h>
  30 #include <linux/socket.h>
  31 #include <linux/security.h>
  32 #include <linux/syscalls.h>
  33
  34 #include <asm/ptrace.h>
  35 #include <asm/page.h>
  36 #include <asm/uaccess.h>
  37 #include <asm/inventory.h>
  38
  39 /* 2,191 lines of complete and utter shit coming up... */
  40
  41 extern int max_threads;
  42
  43 /* The sysmp commands supported thus far. */
  44 #define MP_NPROCS               1 /* # processor in complex */
  45 #define MP_NAPROCS              2 /* # active processors in complex */
  46 #define MP_PGSIZE               14 /* Return system page size in v1. */
  47
  48 asmlinkage int irix_sysmp(struct pt_regs *regs)
  49 {
  50         unsigned long cmd;
  51         int base = 0;
  52         int error = 0;
  53
  54         if(regs->regs[2] == 1000)
  55                 base = 1;
  56         cmd = regs->regs[base + 4];
  57         switch(cmd) {
  58         case MP_PGSIZE:
  59                 error = PAGE_SIZE;
  60                 break;
  61         case MP_NPROCS:
  62         case MP_NAPROCS:
  63                 error = num_online_cpus();
  64                 break;
  65         default:
  66                 printk("SYSMP[%s:%d]: Unsupported opcode %d\n",
  67                        current->comm, current->pid, (int)cmd);
  68                 error = -EINVAL;
  69                 break;
  70         }
  71
  72         return error;
  73 }
  74
  75 /* The prctl commands. */
  76 #define PR_MAXPROCS          1 /* Tasks/user. */
  77 #define PR_ISBLOCKED         2 /* If blocked, return 1. */
  78 #define PR_SETSTACKSIZE      3 /* Set largest task stack size. */
  79 #define PR_GETSTACKSIZE      4 /* Get largest task stack size. */
  80 #define PR_MAXPPROCS         5 /* Num parallel tasks. */
  81 #define PR_UNBLKONEXEC       6 /* When task exec/exit's, unblock. */
  82 #define PR_SETEXITSIG        8 /* When task exit's, set signal. */
  83 #define PR_RESIDENT          9 /* Make task unswappable. */
  84 #define PR_ATTACHADDR       10 /* (Re-)Connect a vma to a task. */
  85 #define PR_DETACHADDR       11 /* Disconnect a vma from a task. */
  86 #define PR_TERMCHILD        12 /* When parent sleeps with fishes, kill child. */
  87 #define PR_GETSHMASK        13 /* Get the sproc() share mask. */
  88 #define PR_GETNSHARE        14 /* Number of share group members. */
  89 #define PR_COREPID          15 /* Add task pid to name when it core. */
  90 #define PR_ATTACHADDRPERM   16 /* (Re-)Connect vma, with specified prot. */
  91 #define PR_PTHREADEXIT      17 /* Kill a pthread without prejudice. */
  92
  93 asmlinkage int irix_prctl(struct pt_regs *regs)
  94 {
  95         unsigned long cmd;
  96         int error = 0, base = 0;
  97
  98         if (regs->regs[2] == 1000)
  99                 base = 1;
 100         cmd = regs->regs[base + 4];
 101         switch (cmd) {
 102         case PR_MAXPROCS:
 103                 printk("irix_prctl[%s:%d]: Wants PR_MAXPROCS\n",
 104                        current->comm, current->pid);
 105                 error = max_threads;
 106                 break;
 107
 108         case PR_ISBLOCKED: {
 109                 struct task_struct *task;
 110
 111                 printk("irix_prctl[%s:%d]: Wants PR_ISBLOCKED\n",
 112                        current->comm, current->pid);
 113                 read_lock(&tasklist_lock);
 114                 task = find_task_by_pid(regs->regs[base + 5]);
 115                 error = -ESRCH;
 116                 if (error)
 117                         error = (task->run_list.next != NULL);
 118                 read_unlock(&tasklist_lock);
 119                 /* Can _your_ OS find this out that fast? */
 120                 break;
 121         }
 122
 123         case PR_SETSTACKSIZE: {
 124                 long value = regs->regs[base + 5];
 125
 126                 printk("irix_prctl[%s:%d]: Wants PR_SETSTACKSIZE<%08lx>\n",
 127                        current->comm, current->pid, (unsigned long) value);
 128                 if (value > RLIM_INFINITY)
 129                         value = RLIM_INFINITY;
 130                 if (capable(CAP_SYS_ADMIN)) {
 131                         task_lock(current->group_leader);
 132                         current->signal->rlim[RLIMIT_STACK].rlim_max =
 133                                 current->signal->rlim[RLIMIT_STACK].rlim_cur = value;
 134                         task_unlock(current->group_leader);
 135                         error = value;
 136                         break;
 137                 }
 138                 task_lock(current->group_leader);
 139                 if (value > current->signal->rlim[RLIMIT_STACK].rlim_max) {
 140                         error = -EINVAL;
 141                         task_unlock(current->group_leader);
 142                         break;
 143                 }
 144                 current->signal->rlim[RLIMIT_STACK].rlim_cur = value;
 145                 task_unlock(current->group_leader);
 146                 error = value;
 147                 break;
 148         }
 149
 150         case PR_GETSTACKSIZE:
 151                 printk("irix_prctl[%s:%d]: Wants PR_GETSTACKSIZE\n",
 152                        current->comm, current->pid);
 153                 error = current->signal->rlim[RLIMIT_STACK].rlim_cur;
 154                 break;
 155
 156         case PR_MAXPPROCS:
 157                 printk("irix_prctl[%s:%d]: Wants PR_MAXPROCS\n",
 158                        current->comm, current->pid);
 159                 error = 1;
 160                 break;
 161
 162         case PR_UNBLKONEXEC:
 163                 printk("irix_prctl[%s:%d]: Wants PR_UNBLKONEXEC\n",
 164                        current->comm, current->pid);
 165                 error = -EINVAL;
 166                 break;
 167
 168         case PR_SETEXITSIG:
 169                 printk("irix_prctl[%s:%d]: Wants PR_SETEXITSIG\n",
 170                        current->comm, current->pid);
 171
 172                 /* We can probably play some game where we set the task
 173                  * exit_code to some non-zero value when this is requested,
 174                  * and check whether exit_code is already set in do_exit().
 175                  */
 176                 error = -EINVAL;
 177                 break;
 178
 179         case PR_RESIDENT:
 180                 printk("irix_prctl[%s:%d]: Wants PR_RESIDENT\n",
 181                        current->comm, current->pid);
 182                 error = 0; /* Compatibility indeed. */
 183                 break;
 184
 185         case PR_ATTACHADDR:
 186                 printk("irix_prctl[%s:%d]: Wants PR_ATTACHADDR\n",
 187                        current->comm, current->pid);
 188                 error = -EINVAL;
 189                 break;
 190
 191         case PR_DETACHADDR:
 192                 printk("irix_prctl[%s:%d]: Wants PR_DETACHADDR\n",
 193                        current->comm, current->pid);
 194                 error = -EINVAL;
 195                 break;
 196
 197         case PR_TERMCHILD:
 198                 printk("irix_prctl[%s:%d]: Wants PR_TERMCHILD\n",
 199                        current->comm, current->pid);
 200                 error = -EINVAL;
 201                 break;
 202
 203         case PR_GETSHMASK:
 204                 printk("irix_prctl[%s:%d]: Wants PR_GETSHMASK\n",
 205                        current->comm, current->pid);
 206                 error = -EINVAL; /* Until I have the sproc() stuff in. */
 207                 break;
 208
 209         case PR_GETNSHARE:
 210                 error = 0;       /* Until I have the sproc() stuff in. */
 211                 break;
 212
 213         case PR_COREPID:
 214                 printk("irix_prctl[%s:%d]: Wants PR_COREPID\n",
 215                        current->comm, current->pid);
 216                 error = -EINVAL;
 217                 break;
 218
 219         case PR_ATTACHADDRPERM:
 220                 printk("irix_prctl[%s:%d]: Wants PR_ATTACHADDRPERM\n",
 221                        current->comm, current->pid);
 222                 error = -EINVAL;
 223                 break;
 224
 225         case PR_PTHREADEXIT:
 226                 printk("irix_prctl[%s:%d]: Wants PR_PTHREADEXIT\n",
 227                        current->comm, current->pid);
 228                 do_exit(regs->regs[base + 5]);
 229
 230         default:
 231                 printk("irix_prctl[%s:%d]: Non-existant opcode %d\n",
 232                        current->comm, current->pid, (int)cmd);
 233                 error = -EINVAL;
 234                 break;
 235         }
 236
 237         return error;
 238 }
 239
 240 #undef DEBUG_PROCGRPS
 241
 242 extern unsigned long irix_mapelf(int fd, struct elf_phdr *user_phdrp, int cnt);
 243 extern int getrusage(struct task_struct *p, int who, struct rusage __user *ru);
 244 extern char *prom_getenv(char *name);
 245 extern long prom_setenv(char *name, char *value);
 246
 247 /* The syssgi commands supported thus far. */
 248 #define SGI_SYSID         1       /* Return unique per-machine identifier. */
 249 #define SGI_INVENT        5       /* Fetch inventory  */
 250 #   define SGI_INV_SIZEOF 1
 251 #   define SGI_INV_READ   2
 252 #define SGI_RDNAME        6       /* Return string name of a process. */
 253 #define SGI_SETNVRAM      8       /* Set PROM variable. */
 254 #define SGI_GETNVRAM      9       /* Get PROM variable. */
 255 #define SGI_SETPGID      21       /* Set process group id. */
 256 #define SGI_SYSCONF      22       /* POSIX sysconf garbage. */
 257 #define SGI_PATHCONF     24       /* POSIX sysconf garbage. */
 258 #define SGI_SETGROUPS    40       /* POSIX sysconf garbage. */
 259 #define SGI_GETGROUPS    41       /* POSIX sysconf garbage. */
 260 #define SGI_RUSAGE       56       /* BSD style rusage(). */
 261 #define SGI_SSYNC        62       /* Synchronous fs sync. */
 262 #define SGI_GETSID       65       /* SysVr4 get session id. */
 263 #define SGI_ELFMAP       68       /* Map an elf image. */
 264 #define SGI_TOSSTSAVE   108       /* Toss saved vma's. */
 265 #define SGI_FP_BCOPY    129       /* Should FPU bcopy be used on this machine? */
 266 #define SGI_PHYSP      1011       /* Translate virtual into physical page. */
 267
 268 asmlinkage int irix_syssgi(struct pt_regs *regs)
 269 {
 270         unsigned long cmd;
 271         int retval, base = 0;
 272
 273         if (regs->regs[2] == 1000)
 274                 base = 1;
 275
 276         cmd = regs->regs[base + 4];
 277         switch(cmd) {
 278         case SGI_SYSID: {
 279                 char *buf = (char *) regs->regs[base + 5];
 280
 281                 /* XXX Use ethernet addr.... */
 282                 retval = clear_user(buf, 64);
 283                 break;
 284         }
 285 #if 0
 286         case SGI_RDNAME: {
 287                 int pid = (int) regs->regs[base + 5];
 288                 char *buf = (char *) regs->regs[base + 6];
 289                 struct task_struct *p;
 290                 char tcomm[sizeof(current->comm)];
 291
 292                 if (!access_ok(VERIFY_WRITE, buf, sizeof(tcomm))) {
 293                         retval = -EFAULT;
 294                         break;
 295                 }
 296                 read_lock(&tasklist_lock);
 297                 p = find_task_by_pid(pid);
 298                 if (!p) {
 299                         read_unlock(&tasklist_lock);
 300                         retval = -ESRCH;
 301                         break;
 302                 }
 303                 get_task_comm(tcomm, p);
 304                 read_unlock(&tasklist_lock);
 305
 306                 /* XXX Need to check sizes. */
 307                 copy_to_user(buf, tcomm, sizeof(tcomm));
 308                 retval = 0;
 309                 break;
 310         }
 311
 312         case SGI_GETNVRAM: {
 313                 char *name = (char *) regs->regs[base+5];
 314                 char *buf = (char *) regs->regs[base+6];
 315                 char *value;
 316                 return -EINVAL; /* til I fix it */
 317                 if (!access_ok(VERIFY_WRITE, buf, 128)) {
 318                         retval = -EFAULT;
 319                         break;
 320                 }
 321                 value = prom_getenv(name);      /* PROM lock?  */
 322                 if (!value) {
 323                         retval = -EINVAL;
 324                         break;
 325                 }
 326                 /* Do I strlen() for the length? */
 327                 copy_to_user(buf, value, 128);
 328                 retval = 0;
 329                 break;
 330         }
 331
 332         case SGI_SETNVRAM: {
 333                 char *name = (char *) regs->regs[base+5];
 334                 char *value = (char *) regs->regs[base+6];
 335                 return -EINVAL; /* til I fix it */
 336                 retval = prom_setenv(name, value);
 337                 /* XXX make sure retval conforms to syssgi(2) */
 338                 printk("[%s:%d] setnvram(\"%s\", \"%s\"): retval %d",
 339                        current->comm, current->pid, name, value, retval);
 340 /*              if (retval == PROM_ENOENT)
 341                         retval = -ENOENT; */
 342                 break;
 343         }
 344 #endif
 345
 346         case SGI_SETPGID: {
 347 #ifdef DEBUG_PROCGRPS
 348                 printk("[%s:%d] setpgid(%d, %d) ",
 349                        current->comm, current->pid,
 350                        (int) regs->regs[base + 5], (int)regs->regs[base + 6]);
 351 #endif
 352                 retval = sys_setpgid(regs->regs[base + 5], regs->regs[base + 6]);
 353
 354 #ifdef DEBUG_PROCGRPS
 355                 printk("retval=%d\n", retval);
 356 #endif
 357         }
 358
 359         case SGI_SYSCONF: {
 360                 switch(regs->regs[base + 5]) {
 361                 case 1:
 362                         retval = (MAX_ARG_PAGES >> 4); /* XXX estimate... */
 363                         goto out;
 364                 case 2:
 365                         retval = max_threads;
 366                         goto out;
 367                 case 3:
 368                         retval = HZ;
 369                         goto out;
 370                 case 4:
 371                         retval = NGROUPS_MAX;
 372                         goto out;
 373                 case 5:
 374                         retval = NR_OPEN;
 375                         goto out;
 376                 case 6:
 377                         retval = 1;
 378                         goto out;
 379                 case 7:
 380                         retval = 1;
 381                         goto out;
 382                 case 8:
 383                         retval = 199009;
 384                         goto out;
 385                 case 11:
 386                         retval = PAGE_SIZE;
 387                         goto out;
 388                 case 12:
 389                         retval = 4;
 390                         goto out;
 391                 case 25:
 392                 case 26:
 393                 case 27:
 394                 case 28:
 395                 case 29:
 396                 case 30:
 397                         retval = 0;
 398                         goto out;
 399                 case 31:
 400                         retval = 32;
 401                         goto out;
 402                 default:
 403                         retval = -EINVAL;
 404                         goto out;
 405                 };
 406         }
 407
 408         case SGI_SETGROUPS:
 409                 retval = sys_setgroups((int) regs->regs[base + 5],
 410                                        (gid_t *) regs->regs[base + 6]);
 411                 break;
 412
 413         case SGI_GETGROUPS:
 414                 retval = sys_getgroups((int) regs->regs[base + 5],
 415                                        (gid_t *) regs->regs[base + 6]);
 416                 break;
 417
 418         case SGI_RUSAGE: {
 419                 struct rusage *ru = (struct rusage *) regs->regs[base + 6];
 420
 421                 switch((int) regs->regs[base + 5]) {
 422                 case 0:
 423                         /* rusage self */
 424                         retval = getrusage(current, RUSAGE_SELF, ru);
 425                         goto out;
 426
 427                 case -1:
 428                         /* rusage children */
 429                         retval = getrusage(current, RUSAGE_CHILDREN, ru);
 430                         goto out;
 431
 432                 default:
 433                         retval = -EINVAL;
 434                         goto out;
 435                 };
 436         }
 437
 438         case SGI_SSYNC:
 439                 sys_sync();
 440                 retval = 0;
 441                 break;
 442
 443         case SGI_GETSID:
 444 #ifdef DEBUG_PROCGRPS
 445                 printk("[%s:%d] getsid(%d) ", current->comm, current->pid,
 446                        (int) regs->regs[base + 5]);
 447 #endif
 448                 retval = sys_getsid(regs->regs[base + 5]);
 449 #ifdef DEBUG_PROCGRPS
 450                 printk("retval=%d\n", retval);
 451 #endif
 452                 break;
 453
 454         case SGI_ELFMAP:
 455                 retval = irix_mapelf((int) regs->regs[base + 5],
 456                                      (struct elf_phdr *) regs->regs[base + 6],
 457                                      (int) regs->regs[base + 7]);
 458                 break;
 459
 460         case SGI_TOSSTSAVE:
 461                 /* XXX We don't need to do anything? */
 462                 retval = 0;
 463                 break;
 464
 465         case SGI_FP_BCOPY:
 466                 retval = 0;
 467                 break;
 468
 469         case SGI_PHYSP: {
 470                 unsigned long addr = regs->regs[base + 5];
 471                 int *pageno = (int *) (regs->regs[base + 6]);
 472                 struct mm_struct *mm = current->mm;
 473                 pgd_t *pgdp;
 474                 pmd_t *pmdp;
 475                 pte_t *ptep;
 476
 477                 if (!access_ok(VERIFY_WRITE, pageno, sizeof(int)))
 478                         return -EFAULT;
 479
 480                 down_read(&mm->mmap_sem);
 481                 pgdp = pgd_offset(mm, addr);
 482                 pmdp = pmd_offset(pgdp, addr);
 483                 ptep = pte_offset(pmdp, addr);
 484                 retval = -EINVAL;
 485                 if (ptep) {
 486                         pte_t pte = *ptep;
 487
 488                         if (pte_val(pte) & (_PAGE_VALID | _PAGE_PRESENT)) {
 489                                 retval =  put_user((pte_val(pte) & PAGE_MASK) >>
 490                                                    PAGE_SHIFT, pageno);
 491                         }
 492                 }
 493                 up_read(&mm->mmap_sem);
 494                 break;
 495         }
 496
 497         case SGI_INVENT: {
 498                 int  arg1    = (int)    regs->regs [base + 5];
 499                 void *buffer = (void *) regs->regs [base + 6];
 500                 int  count   = (int)    regs->regs [base + 7];
 501
 502                 switch (arg1) {
 503                 case SGI_INV_SIZEOF:
 504                         retval = sizeof (inventory_t);
 505                         break;
 506                 case SGI_INV_READ:
 507                         retval = dump_inventory_to_user (buffer, count);
 508                         break;
 509                 default:
 510                         retval = -EINVAL;
 511                 }
 512                 break;
 513         }
 514
 515         default:
 516                 printk("irix_syssgi: Unsupported command %d\n", (int)cmd);
 517                 retval = -EINVAL;
 518                 break;
 519         };
 520
 521 out:
 522         return retval;
 523 }
 524
 525 asmlinkage int irix_gtime(struct pt_regs *regs)
 526 {
 527         return get_seconds();
 528 }
 529
 530 /*
 531  * IRIX is completely broken... it returns 0 on success, otherwise
 532  * ENOMEM.
 533  */
 534 asmlinkage int irix_brk(unsigned long brk)
 535 {
 536         unsigned long rlim;
 537         unsigned long newbrk, oldbrk;
 538         struct mm_struct *mm = current->mm;
 539         int ret;
 540
 541         down_write(&mm->mmap_sem);
 542         if (brk < mm->end_code) {
 543                 ret = -ENOMEM;
 544                 goto out;
 545         }
 546
 547         newbrk = PAGE_ALIGN(brk);
 548         oldbrk = PAGE_ALIGN(mm->brk);
 549         if (oldbrk == newbrk) {
 550                 mm->brk = brk;
 551                 ret = 0;
 552                 goto out;
 553         }
 554
 555         /*
 556          * Always allow shrinking brk
 557          */
 558         if (brk <= mm->brk) {
 559                 mm->brk = brk;
 560                 do_munmap(mm, newbrk, oldbrk-newbrk);
 561                 ret = 0;
 562                 goto out;
 563         }
 564         /*
 565          * Check against rlimit and stack..
 566          */
 567         rlim = current->signal->rlim[RLIMIT_DATA].rlim_cur;
 568         if (rlim >= RLIM_INFINITY)
 569                 rlim = ~0;
 570         if (brk - mm->end_code > rlim) {
 571                 ret = -ENOMEM;
 572                 goto out;
 573         }
 574
 575         /*
 576          * Check against existing mmap mappings.
 577          */
 578         if (find_vma_intersection(mm, oldbrk, newbrk+PAGE_SIZE)) {
 579                 ret = -ENOMEM;
 580                 goto out;
 581         }
 582
 583         /*
 584          * Check if we have enough memory..
 585          */
 586         if (security_vm_enough_memory((newbrk-oldbrk) >> PAGE_SHIFT)) {
 587                 ret = -ENOMEM;
 588                 goto out;
 589         }
 590
 591         /*
 592          * Ok, looks good - let it rip.
 593          */
 594         mm->brk = brk;
 595         do_brk(oldbrk, newbrk-oldbrk);
 596         ret = 0;
 597
 598 out:
 599         up_write(&mm->mmap_sem);
 600         return ret;
 601 }
 602
 603 asmlinkage int irix_getpid(struct pt_regs *regs)
 604 {
 605         regs->regs[3] = current->real_parent->pid;
 606         return current->pid;
 607 }
 608
 609 asmlinkage int irix_getuid(struct pt_regs *regs)
 610 {
 611         regs->regs[3] = current->euid;
 612         return current->uid;
 613 }
 614
 615 asmlinkage int irix_getgid(struct pt_regs *regs)
 616 {
 617         regs->regs[3] = current->egid;
 618         return current->gid;
 619 }
 620
 621 asmlinkage int irix_stime(int value)
 622 {
 623         int err;
 624         struct timespec tv;
 625
 626         tv.tv_sec = value;
 627         tv.tv_nsec = 0;
 628         err = security_settime(&tv, NULL);
 629         if (err)
 630                 return err;
 631
 632         write_seqlock_irq(&xtime_lock);
 633         xtime.tv_sec = value;
 634         xtime.tv_nsec = 0;
 635         time_adjust = 0;                        /* stop active adjtime() */
 636         time_status |= STA_UNSYNC;
 637         time_maxerror = NTP_PHASE_LIMIT;
 638         time_esterror = NTP_PHASE_LIMIT;
 639         write_sequnlock_irq(&xtime_lock);
 640
 641         return 0;
 642 }
 643
 644 static inline void jiffiestotv(unsigned long jiffies, struct timeval *value)
 645 {
 646         value->tv_usec = (jiffies % HZ) * (1000000 / HZ);
 647         value->tv_sec = jiffies / HZ;
 648 }
 649
 650 static inline void getitimer_real(struct itimerval *value)
 651 {
 652         register unsigned long val, interval;
 653
 654         interval = current->it_real_incr;
 655         val = 0;
 656         if (del_timer(&current->real_timer)) {
 657                 unsigned long now = jiffies;
 658                 val = current->real_timer.expires;
 659                 add_timer(&current->real_timer);
 660                 /* look out for negative/zero itimer.. */
 661                 if (val <= now)
 662                         val = now+1;
 663                 val -= now;
 664         }
 665         jiffiestotv(val, &value->it_value);
 666         jiffiestotv(interval, &value->it_interval);
 667 }
 668
 669 asmlinkage unsigned int irix_alarm(unsigned int seconds)
 670 {
 671         struct itimerval it_new, it_old;
 672         unsigned int oldalarm;
 673
 674         if (!seconds) {
 675                 getitimer_real(&it_old);
 676                 del_timer(&current->real_timer);
 677         } else {
 678                 it_new.it_interval.tv_sec = it_new.it_interval.tv_usec = 0;
 679                 it_new.it_value.tv_sec = seconds;
 680                 it_new.it_value.tv_usec = 0;
 681                 do_setitimer(ITIMER_REAL, &it_new, &it_old);
 682         }
 683         oldalarm = it_old.it_value.tv_sec;
 684         /*
 685          * ehhh.. We can't return 0 if we have an alarm pending ...
 686          * And we'd better return too much than too little anyway
 687          */
 688         if (it_old.it_value.tv_usec)
 689                 oldalarm++;
 690
 691         return oldalarm;
 692 }
 693
 694 asmlinkage int irix_pause(void)
 695 {
 696         current->state = TASK_INTERRUPTIBLE;
 697         schedule();
 698
 699         return -EINTR;
 700 }
 701
 702 /* XXX need more than this... */
 703 asmlinkage int irix_mount(char *dev_name, char *dir_name, unsigned long flags,
 704                           char *type, void *data, int datalen)
 705 {
 706         printk("[%s:%d] irix_mount(%p,%p,%08lx,%p,%p,%d)\n",
 707                current->comm, current->pid,
 708                dev_name, dir_name, flags, type, data, datalen);
 709
 710         return sys_mount(dev_name, dir_name, type, flags, data);
 711 }
 712
 713 struct irix_statfs {
 714         short f_type;
 715         long  f_bsize, f_frsize, f_blocks, f_bfree, f_files, f_ffree;
 716         char  f_fname[6], f_fpack[6];
 717 };
 718
 719 asmlinkage int irix_statfs(const char *path, struct irix_statfs *buf,
 720                            int len, int fs_type)
 721 {
 722         struct nameidata nd;
 723         struct kstatfs kbuf;
 724         int error, i;
 725
 726         /* We don't support this feature yet. */
 727         if (fs_type) {
 728                 error = -EINVAL;
 729                 goto out;
 730         }
 731         if (!access_ok(VERIFY_WRITE, buf, sizeof(struct irix_statfs))) {
 732                 error = -EFAULT;
 733                 goto out;
 734         }
 735         error = user_path_walk(path, &nd);
 736         if (error)
 737                 goto out;
 738
 739         error = vfs_statfs(nd.dentry->d_inode->i_sb, &kbuf);
 740         if (error)
 741                 goto dput_and_out;
 742
 743         __put_user(kbuf.f_type, &buf->f_type);
 744         __put_user(kbuf.f_bsize, &buf->f_bsize);
 745         __put_user(kbuf.f_frsize, &buf->f_frsize);
 746         __put_user(kbuf.f_blocks, &buf->f_blocks);
 747         __put_user(kbuf.f_bfree, &buf->f_bfree);
 748         __put_user(kbuf.f_files, &buf->f_files);
 749         __put_user(kbuf.f_ffree, &buf->f_ffree);
 750         for (i = 0; i < 6; i++) {
 751                 __put_user(0, &buf->f_fname[i]);
 752                 __put_user(0, &buf->f_fpack[i]);
 753         }
 754         error = 0;
 755
 756 dput_and_out:
 757         path_release(&nd);
 758 out:
 759         return error;
 760 }
 761
 762 asmlinkage int irix_fstatfs(unsigned int fd, struct irix_statfs *buf)
 763 {
 764         struct kstatfs kbuf;
 765         struct file *file;
 766         int error, i;
 767
 768         if (!access_ok(VERIFY_WRITE, buf, sizeof(struct irix_statfs))) {
 769                 error = -EFAULT;
 770                 goto out;
 771         }
 772         if (!(file = fget(fd))) {
 773                 error = -EBADF;
 774                 goto out;
 775         }
 776
 777         error = vfs_statfs(file->f_dentry->d_inode->i_sb, &kbuf);
 778         if (error)
 779                 goto out_f;
 780
 781         __put_user(kbuf.f_type, &buf->f_type);
 782         __put_user(kbuf.f_bsize, &buf->f_bsize);
 783         __put_user(kbuf.f_frsize, &buf->f_frsize);
 784         __put_user(kbuf.f_blocks, &buf->f_blocks);
 785         __put_user(kbuf.f_bfree, &buf->f_bfree);
 786         __put_user(kbuf.f_files, &buf->f_files);
 787         __put_user(kbuf.f_ffree, &buf->f_ffree);
 788         for(i = 0; i < 6; i++) {
 789                 __put_user(0, &buf->f_fname[i]);
 790                 __put_user(0, &buf->f_fpack[i]);
 791         }
 792
 793 out_f:
 794         fput(file);
 795 out:
 796         return error;
 797 }
 798
 799 asmlinkage int irix_setpgrp(int flags)
 800 {
 801         int error;
 802
 803 #ifdef DEBUG_PROCGRPS
 804         printk("[%s:%d] setpgrp(%d) ", current->comm, current->pid, flags);
 805 #endif
 806         if(!flags)
 807                 error = process_group(current);
 808         else
 809                 error = sys_setsid();
 810 #ifdef DEBUG_PROCGRPS
 811         printk("returning %d\n", process_group(current));
 812 #endif
 813
 814         return error;
 815 }
 816
 817 asmlinkage int irix_times(struct tms * tbuf)
 818 {
 819         int err = 0;
 820
 821         if (tbuf) {
 822                 if (!access_ok(VERIFY_WRITE,tbuf,sizeof *tbuf))
 823                         return -EFAULT;
 824                 err |= __put_user(current->utime, &tbuf->tms_utime);
 825                 err |= __put_user(current->stime, &tbuf->tms_stime);
 826                 err |= __put_user(current->signal->cutime, &tbuf->tms_cutime);
 827                 err |= __put_user(current->signal->cstime, &tbuf->tms_cstime);
 828         }
 829
 830         return err;
 831 }
 832
 833 asmlinkage int irix_exec(struct pt_regs *regs)
 834 {
 835         int error, base = 0;
 836         char *filename;
 837
 838         if(regs->regs[2] == 1000)
 839                 base = 1;
 840         filename = getname((char *) (long)regs->regs[base + 4]);
 841         error = PTR_ERR(filename);
 842         if (IS_ERR(filename))
 843                 return error;
 844
 845         error = do_execve(filename, (char **) (long)regs->regs[base + 5],
 846                           (char **) 0, regs);
 847         putname(filename);
 848
 849         return error;
 850 }
 851
 852 asmlinkage int irix_exece(struct pt_regs *regs)
 853 {
 854         int error, base = 0;
 855         char *filename;
 856
 857         if (regs->regs[2] == 1000)
 858                 base = 1;
 859         filename = getname((char *) (long)regs->regs[base + 4]);
 860         error = PTR_ERR(filename);
 861         if (IS_ERR(filename))
 862                 return error;
 863         error = do_execve(filename, (char **) (long)regs->regs[base + 5],
 864                           (char **) (long)regs->regs[base + 6], regs);
 865         putname(filename);
 866
 867         return error;
 868 }
 869
 870 asmlinkage unsigned long irix_gethostid(void)
 871 {
 872         printk("[%s:%d]: irix_gethostid() called...\n",
 873                current->comm, current->pid);
 874
 875         return -EINVAL;
 876 }
 877
 878 asmlinkage unsigned long irix_sethostid(unsigned long val)
 879 {
 880         printk("[%s:%d]: irix_sethostid(%08lx) called...\n",
 881                current->comm, current->pid, val);
 882
 883         return -EINVAL;
 884 }
 885
 886 asmlinkage int irix_socket(int family, int type, int protocol)
 887 {
 888         switch(type) {
 889         case 1:
 890                 type = SOCK_DGRAM;
 891                 break;
 892
 893         case 2:
 894                 type = SOCK_STREAM;
 895                 break;
 896
 897         case 3:
 898                 type = 9; /* Invalid... */
 899                 break;
 900
 901         case 4:
 902                 type = SOCK_RAW;
 903                 break;
 904
 905         case 5:
 906                 type = SOCK_RDM;
 907                 break;
 908
 909         case 6:
 910                 type = SOCK_SEQPACKET;
 911                 break;
 912
 913         default:
 914                 break;
 915         }
 916
 917         return sys_socket(family, type, protocol);
 918 }
 919
 920 asmlinkage int irix_getdomainname(char *name, int len)
 921 {
 922         int error;
 923
 924         if (!access_ok(VERIFY_WRITE, name, len))
 925                 return -EFAULT;
 926
 927         down_read(&uts_sem);
 928         if (len > __NEW_UTS_LEN)
 929                 len = __NEW_UTS_LEN;
 930         error = 0;
 931         if (copy_to_user(name, system_utsname.domainname, len))
 932                 error = -EFAULT;
 933         up_read(&uts_sem);
 934
 935         return error;
 936 }
 937
 938 asmlinkage unsigned long irix_getpagesize(void)
 939 {
 940         return PAGE_SIZE;
 941 }
 942
 943 asmlinkage int irix_msgsys(int opcode, unsigned long arg0, unsigned long arg1,
 944                            unsigned long arg2, unsigned long arg3,
 945                            unsigned long arg4)
 946 {
 947         switch (opcode) {
 948         case 0:
 949                 return sys_msgget((key_t) arg0, (int) arg1);
 950         case 1:
 951                 return sys_msgctl((int) arg0, (int) arg1, (struct msqid_ds *)arg2);
 952         case 2:
 953                 return sys_msgrcv((int) arg0, (struct msgbuf *) arg1,
 954                                   (size_t) arg2, (long) arg3, (int) arg4);
 955         case 3:
 956                 return sys_msgsnd((int) arg0, (struct msgbuf *) arg1,
 957                                   (size_t) arg2, (int) arg3);
 958         default:
 959                 return -EINVAL;
 960         }
 961 }
 962
 963 asmlinkage int irix_shmsys(int opcode, unsigned long arg0, unsigned long arg1,
 964                            unsigned long arg2, unsigned long arg3)
 965 {
 966         switch (opcode) {
 967         case 0:
 968                 return do_shmat((int) arg0, (char *)arg1, (int) arg2,
 969                                  (unsigned long *) arg3);
 970         case 1:
 971                 return sys_shmctl((int)arg0, (int)arg1, (struct shmid_ds *)arg2);
 972         case 2:
 973                 return sys_shmdt((char *)arg0);
 974         case 3:
 975                 return sys_shmget((key_t) arg0, (int) arg1, (int) arg2);
 976         default:
 977                 return -EINVAL;
 978         }
 979 }
 980
 981 asmlinkage int irix_semsys(int opcode, unsigned long arg0, unsigned long arg1,
 982                            unsigned long arg2, int arg3)
 983 {
 984         switch (opcode) {
 985         case 0:
 986                 return sys_semctl((int) arg0, (int) arg1, (int) arg2,
 987                                   (union semun) arg3);
 988         case 1:
 989                 return sys_semget((key_t) arg0, (int) arg1, (int) arg2);
 990         case 2:
 991                 return sys_semop((int) arg0, (struct sembuf *)arg1,
 992                                  (unsigned int) arg2);
 993         default:
 994                 return -EINVAL;
 995         }
 996 }
 997
 998 static inline loff_t llseek(struct file *file, loff_t offset, int origin)
 999 {
1000         loff_t (*fn)(struct file *, loff_t, int);
1001         loff_t retval;
1002
1003         fn = default_llseek;
1004         if (file->f_op && file->f_op->llseek)
1005         fn = file->f_op->llseek;
1006         lock_kernel();
1007         retval = fn(file, offset, origin);
1008         unlock_kernel();
1009         return retval;
1010 }
1011
1012 asmlinkage int irix_lseek64(int fd, int _unused, int offhi, int offlow,
1013                             int origin)
1014 {
1015         int retval;
1016         struct file * file;
1017         loff_t offset;
1018
1019         retval = -EBADF;
1020         file = fget(fd);
1021         if (!file)
1022                 goto bad;
1023         retval = -EINVAL;
1024         if (origin > 2)
1025                 goto out_putf;
1026
1027         offset = llseek(file, ((loff_t) offhi << 32) | offlow, origin);
1028         retval = (int) offset;
1029
1030 out_putf:
1031         fput(file);
1032 bad:
1033         return retval;
1034 }
1035
1036 asmlinkage int irix_sginap(int ticks)
1037 {
1038         current->state = TASK_INTERRUPTIBLE;
1039         schedule_timeout(ticks);
1040         return 0;
1041 }
1042
1043 asmlinkage int irix_sgikopt(char *istring, char *ostring, int len)
1044 {
1045         return -EINVAL;
1046 }
1047
1048 asmlinkage int irix_gettimeofday(struct timeval *tv)
1049 {
1050         time_t sec;
1051         long nsec, seq;
1052         int err;
1053
1054         if (!access_ok(VERIFY_WRITE, tv, sizeof(struct timeval)))
1055                 return -EFAULT;
1056
1057         do {
1058                 seq = read_seqbegin(&xtime_lock);
1059                 sec = xtime.tv_sec;
1060                 nsec = xtime.tv_nsec;
1061         } while (read_seqretry(&xtime_lock, seq));
1062
1063         err = __put_user(sec, &tv->tv_sec);
1064         err |= __put_user((nsec / 1000), &tv->tv_usec);
1065
1066         return err;
1067 }
1068
1069 #define IRIX_MAP_AUTOGROW 0x40
1070
1071 asmlinkage unsigned long irix_mmap32(unsigned long addr, size_t len, int prot,
1072                                      int flags, int fd, off_t offset)
1073 {
1074         struct file *file = NULL;
1075         unsigned long retval;
1076
1077         if (!(flags & MAP_ANONYMOUS)) {
1078                 if (!(file = fget(fd)))
1079                         return -EBADF;
1080
1081                 /* Ok, bad taste hack follows, try to think in something else
1082                  * when reading this.  */
1083                 if (flags & IRIX_MAP_AUTOGROW) {
1084                         unsigned long old_pos;
1085                         long max_size = offset + len;
1086
1087                         if (max_size > file->f_dentry->d_inode->i_size) {
1088                                 old_pos = sys_lseek (fd, max_size - 1, 0);
1089                                 sys_write (fd, "", 1);
1090                                 sys_lseek (fd, old_pos, 0);
1091                         }
1092                 }
1093         }
1094
1095         flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
1096
1097         down_write(&current->mm->mmap_sem);
1098         retval = do_mmap(file, addr, len, prot, flags, offset);
1099         up_write(&current->mm->mmap_sem);
1100         if (file)
1101                 fput(file);
1102
1103         return retval;
1104 }
1105
1106 asmlinkage int irix_madvise(unsigned long addr, int len, int behavior)
1107 {
1108         printk("[%s:%d] Wheee.. irix_madvise(%08lx,%d,%d)\n",
1109                current->comm, current->pid, addr, len, behavior);
1110
1111         return -EINVAL;
1112 }
1113
1114 asmlinkage int irix_pagelock(char *addr, int len, int op)
1115 {
1116         printk("[%s:%d] Wheee.. irix_pagelock(%p,%d,%d)\n",
1117                current->comm, current->pid, addr, len, op);
1118
1119         return -EINVAL;
1120 }
1121
1122 asmlinkage int irix_quotactl(struct pt_regs *regs)
1123 {
1124         printk("[%s:%d] Wheee.. irix_quotactl()\n",
1125                current->comm, current->pid);
1126
1127         return -EINVAL;
1128 }
1129
1130 asmlinkage int irix_BSDsetpgrp(int pid, int pgrp)
1131 {
1132         int error;
1133
1134 #ifdef DEBUG_PROCGRPS
1135         printk("[%s:%d] BSDsetpgrp(%d, %d) ", current->comm, current->pid,
1136                pid, pgrp);
1137 #endif
1138         if(!pid)
1139                 pid = current->pid;
1140
1141         /* Wheee, weird sysv thing... */
1142         if ((pgrp == 0) && (pid == current->pid))
1143                 error = sys_setsid();
1144         else
1145                 error = sys_setpgid(pid, pgrp);
1146
1147 #ifdef DEBUG_PROCGRPS
1148         printk("error = %d\n", error);
1149 #endif
1150
1151         return error;
1152 }
1153
1154 asmlinkage int irix_systeminfo(int cmd, char *buf, int cnt)
1155 {
1156         printk("[%s:%d] Wheee.. irix_systeminfo(%d,%p,%d)\n",
1157                current->comm, current->pid, cmd, buf, cnt);
1158
1159         return -EINVAL;
1160 }
1161
1162 struct iuname {
1163         char sysname[257], nodename[257], release[257];
1164         char version[257], machine[257];
1165         char m_type[257], base_rel[257];
1166         char _unused0[257], _unused1[257], _unused2[257];
1167         char _unused3[257], _unused4[257], _unused5[257];
1168 };
1169
1170 asmlinkage int irix_uname(struct iuname *buf)
1171 {
1172         down_read(&uts_sem);
1173         if (copy_to_user(system_utsname.sysname, buf->sysname, 65)
1174             || copy_to_user(system_utsname.nodename, buf->nodename, 65)
1175             || copy_to_user(system_utsname.release, buf->release, 65)
1176             || copy_to_user(system_utsname.version, buf->version, 65)
1177             || copy_to_user(system_utsname.machine, buf->machine, 65)) {
1178                 return -EFAULT;
1179         }
1180         up_read(&uts_sem);
1181
1182         return 1;
1183 }
1184
1185 #undef DEBUG_XSTAT
1186
1187 static int irix_xstat32_xlate(struct kstat *stat, void *ubuf)
1188 {
1189         struct xstat32 {
1190                 u32 st_dev, st_pad1[3], st_ino, st_mode, st_nlink, st_uid, st_gid;
1191                 u32 st_rdev, st_pad2[2], st_size, st_pad3;
1192                 u32 st_atime0, st_atime1;
1193                 u32 st_mtime0, st_mtime1;
1194                 u32 st_ctime0, st_ctime1;
1195                 u32 st_blksize, st_blocks;
1196                 char st_fstype[16];
1197                 u32 st_pad4[8];
1198         } ub;
1199
1200         if (!sysv_valid_dev(stat->dev) || !sysv_valid_dev(stat->rdev))
1201                 return -EOVERFLOW;
1202         ub.st_dev     = sysv_encode_dev(stat->dev);
1203         ub.st_ino     = stat->ino;
1204         ub.st_mode    = stat->mode;
1205         ub.st_nlink   = stat->nlink;
1206         SET_UID(ub.st_uid, stat->uid);
1207         SET_GID(ub.st_gid, stat->gid);
1208         ub.st_rdev    = sysv_encode_dev(stat->rdev);
1209 #if BITS_PER_LONG == 32
1210         if (stat->size > MAX_NON_LFS)
1211                 return -EOVERFLOW;
1212 #endif
1213         ub.st_size    = stat->size;
1214         ub.st_atime0  = stat->atime.tv_sec;
1215         ub.st_atime1  = stat->atime.tv_nsec;
1216         ub.st_mtime0  = stat->mtime.tv_sec;
1217         ub.st_mtime1  = stat->atime.tv_nsec;
1218         ub.st_ctime0  = stat->ctime.tv_sec;
1219         ub.st_ctime1  = stat->atime.tv_nsec;
1220         ub.st_blksize = stat->blksize;
1221         ub.st_blocks  = stat->blocks;
1222         strcpy (ub.st_fstype, "efs");
1223
1224         return copy_to_user(ubuf, &ub, sizeof(ub)) ? -EFAULT : 0;
1225 }
1226
1227 static int irix_xstat64_xlate(struct kstat *stat, void *ubuf)
1228 {
1229         struct xstat64 {
1230                 u32 st_dev; s32 st_pad1[3];
1231                 unsigned long long st_ino;
1232                 u32 st_mode;
1233                 u32 st_nlink; s32 st_uid; s32 st_gid; u32 st_rdev;
1234                 s32 st_pad2[2];
1235                 long long st_size;
1236                 s32 st_pad3;
1237                 struct { s32 tv_sec, tv_nsec; } st_atime, st_mtime, st_ctime;
1238                 s32 st_blksize;
1239                 long long  st_blocks;
1240                 char st_fstype[16];
1241                 s32 st_pad4[8];
1242         } ks;
1243
1244         if (!sysv_valid_dev(stat->dev) || !sysv_valid_dev(stat->rdev))
1245                 return -EOVERFLOW;
1246
1247         ks.st_dev = sysv_encode_dev(stat->dev);
1248         ks.st_pad1[0] = ks.st_pad1[1] = ks.st_pad1[2] = 0;
1249         ks.st_ino = (unsigned long long) stat->ino;
1250         ks.st_mode = (u32) stat->mode;
1251         ks.st_nlink = (u32) stat->nlink;
1252         ks.st_uid = (s32) stat->uid;
1253         ks.st_gid = (s32) stat->gid;
1254         ks.st_rdev = sysv_encode_dev (stat->rdev);
1255         ks.st_pad2[0] = ks.st_pad2[1] = 0;
1256         ks.st_size = (long long) stat->size;
1257         ks.st_pad3 = 0;
1258
1259         /* XXX hackety hack... */
1260         ks.st_atime.tv_sec = (s32) stat->atime.tv_sec;
1261         ks.st_atime.tv_nsec = stat->atime.tv_nsec;
1262         ks.st_mtime.tv_sec = (s32) stat->mtime.tv_sec;
1263         ks.st_mtime.tv_nsec = stat->mtime.tv_nsec;
1264         ks.st_ctime.tv_sec = (s32) stat->ctime.tv_sec;
1265         ks.st_ctime.tv_nsec = stat->ctime.tv_nsec;
1266
1267         ks.st_blksize = (s32) stat->blksize;
1268         ks.st_blocks = (long long) stat->blocks;
1269         memset(ks.st_fstype, 0, 16);
1270         ks.st_pad4[0] = ks.st_pad4[1] = ks.st_pad4[2] = ks.st_pad4[3] = 0;
1271         ks.st_pad4[4] = ks.st_pad4[5] = ks.st_pad4[6] = ks.st_pad4[7] = 0;
1272
1273         /* Now write it all back. */
1274         return copy_to_user(ubuf, &ks, sizeof(ks)) ? -EFAULT : 0;
1275 }
1276
1277 asmlinkage int irix_xstat(int version, char *filename, struct stat *statbuf)
1278 {
1279         int retval;
1280         struct kstat stat;
1281
1282 #ifdef DEBUG_XSTAT
1283         printk("[%s:%d] Wheee.. irix_xstat(%d,%s,%p) ",
1284                current->comm, current->pid, version, filename, statbuf);
1285 #endif
1286
1287         retval = vfs_stat(filename, &stat);
1288         if (!retval) {
1289                 switch(version) {
1290                         case 2:
1291                                 retval = irix_xstat32_xlate(&stat, statbuf);
1292                                 break;
1293                         case 3:
1294                                 retval = irix_xstat64_xlate(&stat, statbuf);
1295                                 break;
1296                         default:
1297                                 retval = -EINVAL;
1298                 }
1299         }
1300         return retval;
1301 }
1302
1303 asmlinkage int irix_lxstat(int version, char *filename, struct stat *statbuf)
1304 {
1305         int error;
1306         struct kstat stat;
1307
1308 #ifdef DEBUG_XSTAT
1309         printk("[%s:%d] Wheee.. irix_lxstat(%d,%s,%p) ",
1310                current->comm, current->pid, version, filename, statbuf);
1311 #endif
1312
1313         error = vfs_lstat(filename, &stat);
1314
1315         if (!error) {
1316                 switch (version) {
1317                         case 2:
1318                                 error = irix_xstat32_xlate(&stat, statbuf);
1319                                 break;
1320                         case 3:
1321                                 error = irix_xstat64_xlate(&stat, statbuf);
1322                                 break;
1323                         default:
1324                                 error = -EINVAL;
1325                 }
1326         }
1327         return error;
1328 }
1329
1330 asmlinkage int irix_fxstat(int version, int fd, struct stat *statbuf)
1331 {
1332         int error;
1333         struct kstat stat;
1334
1335 #ifdef DEBUG_XSTAT
1336         printk("[%s:%d] Wheee.. irix_fxstat(%d,%d,%p) ",
1337                current->comm, current->pid, version, fd, statbuf);
1338 #endif
1339
1340         error = vfs_fstat(fd, &stat);
1341         if (!error) {
1342                 switch (version) {
1343                         case 2:
1344                                 error = irix_xstat32_xlate(&stat, statbuf);
1345                                 break;
1346                         case 3:
1347                                 error = irix_xstat64_xlate(&stat, statbuf);
1348                                 break;
1349                         default:
1350                                 error = -EINVAL;
1351                 }
1352         }
1353         return error;
1354 }
1355
1356 asmlinkage int irix_xmknod(int ver, char *filename, int mode, unsigned dev)
1357 {
1358         int retval;
1359         printk("[%s:%d] Wheee.. irix_xmknod(%d,%s,%x,%x)\n",
1360                current->comm, current->pid, ver, filename, mode, dev);
1361
1362         switch(ver) {
1363         case 2:
1364                 /* shouldn't we convert here as well as on stat()? */
1365                 retval = sys_mknod(filename, mode, dev);
1366                 break;
1367
1368         default:
1369                 retval = -EINVAL;
1370                 break;
1371         };
1372
1373         return retval;
1374 }
1375
1376 asmlinkage int irix_swapctl(int cmd, char *arg)
1377 {
1378         printk("[%s:%d] Wheee.. irix_swapctl(%d,%p)\n",
1379                current->comm, current->pid, cmd, arg);
1380
1381         return -EINVAL;
1382 }
1383
1384 struct irix_statvfs {
1385         u32 f_bsize; u32 f_frsize; u32 f_blocks;
1386         u32 f_bfree; u32 f_bavail; u32 f_files; u32 f_ffree; u32 f_favail;
1387         u32 f_fsid; char f_basetype[16];
1388         u32 f_flag; u32 f_namemax;
1389         char    f_fstr[32]; u32 f_filler[16];
1390 };
1391
1392 asmlinkage int irix_statvfs(char *fname, struct irix_statvfs *buf)
1393 {
1394         struct nameidata nd;
1395         struct kstatfs kbuf;
1396         int error, i;
1397
1398         printk("[%s:%d] Wheee.. irix_statvfs(%s,%p)\n",
1399                current->comm, current->pid, fname, buf);
1400         if (!access_ok(VERIFY_WRITE, buf, sizeof(struct irix_statvfs))) {
1401                 error = -EFAULT;
1402                 goto out;
1403         }
1404         error = user_path_walk(fname, &nd);
1405         if (error)
1406                 goto out;
1407         error = vfs_statfs(nd.dentry->d_inode->i_sb, &kbuf);
1408         if (error)
1409                 goto dput_and_out;
1410
1411         __put_user(kbuf.f_bsize, &buf->f_bsize);
1412         __put_user(kbuf.f_frsize, &buf->f_frsize);
1413         __put_user(kbuf.f_blocks, &buf->f_blocks);
1414         __put_user(kbuf.f_bfree, &buf->f_bfree);
1415         __put_user(kbuf.f_bfree, &buf->f_bavail);  /* XXX hackety hack... */
1416         __put_user(kbuf.f_files, &buf->f_files);
1417         __put_user(kbuf.f_ffree, &buf->f_ffree);
1418         __put_user(kbuf.f_ffree, &buf->f_favail);  /* XXX hackety hack... */
1419 #ifdef __MIPSEB__
1420         __put_user(kbuf.f_fsid.val[1], &buf->f_fsid);
1421 #else
1422         __put_user(kbuf.f_fsid.val[0], &buf->f_fsid);
1423 #endif
1424         for (i = 0; i < 16; i++)
1425                 __put_user(0, &buf->f_basetype[i]);
1426         __put_user(0, &buf->f_flag);
1427         __put_user(kbuf.f_namelen, &buf->f_namemax);
1428         for (i = 0; i < 32; i++)
1429                 __put_user(0, &buf->f_fstr[i]);
1430
1431         error = 0;
1432
1433 dput_and_out:
1434         path_release(&nd);
1435 out:
1436         return error;
1437 }
1438
1439 asmlinkage int irix_fstatvfs(int fd, struct irix_statvfs *buf)
1440 {
1441         struct kstatfs kbuf;
1442         struct file *file;
1443         int error, i;
1444
1445         printk("[%s:%d] Wheee.. irix_fstatvfs(%d,%p)\n",
1446                current->comm, current->pid, fd, buf);
1447
1448         if (!access_ok(VERIFY_WRITE, buf, sizeof(struct irix_statvfs))) {
1449                 error = -EFAULT;
1450                 goto out;
1451         }
1452         if (!(file = fget(fd))) {
1453                 error = -EBADF;
1454                 goto out;
1455         }
1456         error = vfs_statfs(file->f_dentry->d_inode->i_sb, &kbuf);
1457         if (error)
1458                 goto out_f;
1459
1460         __put_user(kbuf.f_bsize, &buf->f_bsize);
1461         __put_user(kbuf.f_frsize, &buf->f_frsize);
1462         __put_user(kbuf.f_blocks, &buf->f_blocks);
1463         __put_user(kbuf.f_bfree, &buf->f_bfree);
1464         __put_user(kbuf.f_bfree, &buf->f_bavail); /* XXX hackety hack... */
1465         __put_user(kbuf.f_files, &buf->f_files);
1466         __put_user(kbuf.f_ffree, &buf->f_ffree);
1467         __put_user(kbuf.f_ffree, &buf->f_favail); /* XXX hackety hack... */
1468 #ifdef __MIPSEB__
1469         __put_user(kbuf.f_fsid.val[1], &buf->f_fsid);
1470 #else
1471         __put_user(kbuf.f_fsid.val[0], &buf->f_fsid);
1472 #endif
1473         for(i = 0; i < 16; i++)
1474                 __put_user(0, &buf->f_basetype[i]);
1475         __put_user(0, &buf->f_flag);
1476         __put_user(kbuf.f_namelen, &buf->f_namemax);
1477         __clear_user(&buf->f_fstr, sizeof(buf->f_fstr));
1478
1479 out_f:
1480         fput(file);
1481 out:
1482         return error;
1483 }
1484
1485 asmlinkage int irix_priocntl(struct pt_regs *regs)
1486 {
1487         printk("[%s:%d] Wheee.. irix_priocntl()\n",
1488                current->comm, current->pid);
1489
1490         return -EINVAL;
1491 }
1492
1493 asmlinkage int irix_sigqueue(int pid, int sig, int code, int val)
1494 {
1495         printk("[%s:%d] Wheee.. irix_sigqueue(%d,%d,%d,%d)\n",
1496                current->comm, current->pid, pid, sig, code, val);
1497
1498         return -EINVAL;
1499 }
1500
1501 asmlinkage int irix_truncate64(char *name, int pad, int size1, int size2)
1502 {
1503         int retval;
1504
1505         if (size1) {
1506                 retval = -EINVAL;
1507                 goto out;
1508         }
1509         retval = sys_truncate(name, size2);
1510
1511 out:
1512         return retval;
1513 }
1514
1515 asmlinkage int irix_ftruncate64(int fd, int pad, int size1, int size2)
1516 {
1517         int retval;
1518
1519         if (size1) {
1520                 retval = -EINVAL;
1521                 goto out;
1522         }
1523         retval = sys_ftruncate(fd, size2);
1524
1525 out:
1526         return retval;
1527 }
1528
1529 asmlinkage int irix_mmap64(struct pt_regs *regs)
1530 {
1531         int len, prot, flags, fd, off1, off2, error, base = 0;
1532         unsigned long addr, pgoff, *sp;
1533         struct file *file = NULL;
1534
1535         if (regs->regs[2] == 1000)
1536                 base = 1;
1537         sp = (unsigned long *) (regs->regs[29] + 16);
1538         addr = regs->regs[base + 4];
1539         len = regs->regs[base + 5];
1540         prot = regs->regs[base + 6];
1541         if (!base) {
1542                 flags = regs->regs[base + 7];
1543                 if (!access_ok(VERIFY_READ, sp, (4 * sizeof(unsigned long)))) {
1544                         error = -EFAULT;
1545                         goto out;
1546                 }
1547                 fd = sp[0];
1548                 __get_user(off1, &sp[1]);
1549                 __get_user(off2, &sp[2]);
1550         } else {
1551                 if (!access_ok(VERIFY_READ, sp, (5 * sizeof(unsigned long)))) {
1552                         error = -EFAULT;
1553                         goto out;
1554                 }
1555                 __get_user(flags, &sp[0]);
1556                 __get_user(fd, &sp[1]);
1557                 __get_user(off1, &sp[2]);
1558                 __get_user(off2, &sp[3]);
1559         }
1560
1561         if (off1 & PAGE_MASK) {
1562                 error = -EOVERFLOW;
1563                 goto out;
1564         }
1565
1566         pgoff = (off1 << (32 - PAGE_SHIFT)) | (off2 >> PAGE_SHIFT);
1567
1568         if (!(flags & MAP_ANONYMOUS)) {
1569                 if (!(file = fget(fd))) {
1570                         error = -EBADF;
1571                         goto out;
1572                 }
1573
1574                 /* Ok, bad taste hack follows, try to think in something else
1575                    when reading this */
1576                 if (flags & IRIX_MAP_AUTOGROW) {
1577                         unsigned long old_pos;
1578                         long max_size = off2 + len;
1579
1580                         if (max_size > file->f_dentry->d_inode->i_size) {
1581                                 old_pos = sys_lseek (fd, max_size - 1, 0);
1582                                 sys_write (fd, "", 1);
1583                                 sys_lseek (fd, old_pos, 0);
1584                         }
1585                 }
1586         }
1587
1588         flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
1589
1590         down_write(&current->mm->mmap_sem);
1591         error = do_mmap_pgoff(file, addr, len, prot, flags, pgoff);
1592         up_write(&current->mm->mmap_sem);
1593
1594         if (file)
1595                 fput(file);
1596
1597 out:
1598         return error;
1599 }
1600
1601 asmlinkage int irix_dmi(struct pt_regs *regs)
1602 {
1603         printk("[%s:%d] Wheee.. irix_dmi()\n",
1604                current->comm, current->pid);
1605
1606         return -EINVAL;
1607 }
1608
1609 asmlinkage int irix_pread(int fd, char *buf, int cnt, int off64,
1610                           int off1, int off2)
1611 {
1612         printk("[%s:%d] Wheee.. irix_pread(%d,%p,%d,%d,%d,%d)\n",
1613                current->comm, current->pid, fd, buf, cnt, off64, off1, off2);
1614
1615         return -EINVAL;
1616 }
1617
1618 asmlinkage int irix_pwrite(int fd, char *buf, int cnt, int off64,
1619                            int off1, int off2)
1620 {
1621         printk("[%s:%d] Wheee.. irix_pwrite(%d,%p,%d,%d,%d,%d)\n",
1622                current->comm, current->pid, fd, buf, cnt, off64, off1, off2);
1623
1624         return -EINVAL;
1625 }
1626
1627 asmlinkage int irix_sgifastpath(int cmd, unsigned long arg0, unsigned long arg1,
1628                                 unsigned long arg2, unsigned long arg3,
1629                                 unsigned long arg4, unsigned long arg5)
1630 {
1631         printk("[%s:%d] Wheee.. irix_fastpath(%d,%08lx,%08lx,%08lx,%08lx,"
1632                "%08lx,%08lx)\n",
1633                current->comm, current->pid, cmd, arg0, arg1, arg2,
1634                arg3, arg4, arg5);
1635
1636         return -EINVAL;
1637 }
1638
1639 struct irix_statvfs64 {
1640         u32  f_bsize; u32 f_frsize;
1641         u64  f_blocks; u64 f_bfree; u64 f_bavail;
1642         u64  f_files; u64 f_ffree; u64 f_favail;
1643         u32  f_fsid;
1644         char f_basetype[16];
1645         u32  f_flag; u32 f_namemax;
1646         char f_fstr[32];
1647         u32  f_filler[16];
1648 };
1649
1650 asmlinkage int irix_statvfs64(char *fname, struct irix_statvfs64 *buf)
1651 {
1652         struct nameidata nd;
1653         struct kstatfs kbuf;
1654         int error, i;
1655
1656         printk("[%s:%d] Wheee.. irix_statvfs64(%s,%p)\n",
1657                current->comm, current->pid, fname, buf);
1658         if (!access_ok(VERIFY_WRITE, buf, sizeof(struct irix_statvfs64))) {
1659                 error = -EFAULT;
1660                 goto out;
1661         }
1662         error = user_path_walk(fname, &nd);
1663         if (error)
1664                 goto out;
1665         error = vfs_statfs(nd.dentry->d_inode->i_sb, &kbuf);
1666         if (error)
1667                 goto dput_and_out;
1668
1669         __put_user(kbuf.f_bsize, &buf->f_bsize);
1670         __put_user(kbuf.f_frsize, &buf->f_frsize);
1671         __put_user(kbuf.f_blocks, &buf->f_blocks);
1672         __put_user(kbuf.f_bfree, &buf->f_bfree);
1673         __put_user(kbuf.f_bfree, &buf->f_bavail);  /* XXX hackety hack... */
1674         __put_user(kbuf.f_files, &buf->f_files);
1675         __put_user(kbuf.f_ffree, &buf->f_ffree);
1676         __put_user(kbuf.f_ffree, &buf->f_favail);  /* XXX hackety hack... */
1677 #ifdef __MIPSEB__
1678         __put_user(kbuf.f_fsid.val[1], &buf->f_fsid);
1679 #else
1680         __put_user(kbuf.f_fsid.val[0], &buf->f_fsid);
1681 #endif
1682         for(i = 0; i < 16; i++)
1683                 __put_user(0, &buf->f_basetype[i]);
1684         __put_user(0, &buf->f_flag);
1685         __put_user(kbuf.f_namelen, &buf->f_namemax);
1686         for(i = 0; i < 32; i++)
1687                 __put_user(0, &buf->f_fstr[i]);
1688
1689         error = 0;
1690
1691 dput_and_out:
1692         path_release(&nd);
1693 out:
1694         return error;
1695 }
1696
1697 asmlinkage int irix_fstatvfs64(int fd, struct irix_statvfs *buf)
1698 {
1699         struct kstatfs kbuf;
1700         struct file *file;
1701         int error, i;
1702
1703         printk("[%s:%d] Wheee.. irix_fstatvfs64(%d,%p)\n",
1704                current->comm, current->pid, fd, buf);
1705
1706         if (!access_ok(VERIFY_WRITE, buf, sizeof(struct irix_statvfs))) {
1707                 error = -EFAULT;
1708                 goto out;
1709         }
1710         if (!(file = fget(fd))) {
1711                 error = -EBADF;
1712                 goto out;
1713         }
1714         error = vfs_statfs(file->f_dentry->d_inode->i_sb, &kbuf);
1715         if (error)
1716                 goto out_f;
1717
1718         __put_user(kbuf.f_bsize, &buf->f_bsize);
1719         __put_user(kbuf.f_frsize, &buf->f_frsize);
1720         __put_user(kbuf.f_blocks, &buf->f_blocks);
1721         __put_user(kbuf.f_bfree, &buf->f_bfree);
1722         __put_user(kbuf.f_bfree, &buf->f_bavail);  /* XXX hackety hack... */
1723         __put_user(kbuf.f_files, &buf->f_files);
1724         __put_user(kbuf.f_ffree, &buf->f_ffree);
1725         __put_user(kbuf.f_ffree, &buf->f_favail);  /* XXX hackety hack... */
1726 #ifdef __MIPSEB__
1727         __put_user(kbuf.f_fsid.val[1], &buf->f_fsid);
1728 #else
1729         __put_user(kbuf.f_fsid.val[0], &buf->f_fsid);
1730 #endif
1731         for(i = 0; i < 16; i++)
1732                 __put_user(0, &buf->f_basetype[i]);
1733         __put_user(0, &buf->f_flag);
1734         __put_user(kbuf.f_namelen, &buf->f_namemax);
1735         __clear_user(buf->f_fstr, sizeof(buf->f_fstr[i]));
1736
1737 out_f:
1738         fput(file);
1739 out:
1740         return error;
1741 }
1742
1743 asmlinkage int irix_getmountid(char *fname, unsigned long *midbuf)
1744 {
1745         int err = 0;
1746
1747         printk("[%s:%d] irix_getmountid(%s, %p)\n",
1748                current->comm, current->pid, fname, midbuf);
1749         if (!access_ok(VERIFY_WRITE, midbuf, (sizeof(unsigned long) * 4)))
1750                 return -EFAULT;
1751
1752         /*
1753          * The idea with this system call is that when trying to determine
1754          * 'pwd' and it's a toss-up for some reason, userland can use the
1755          * fsid of the filesystem to try and make the right decision, but
1756          * we don't have this so for now. XXX
1757          */
1758         err |= __put_user(0, &midbuf[0]);
1759         err |= __put_user(0, &midbuf[1]);
1760         err |= __put_user(0, &midbuf[2]);
1761         err |= __put_user(0, &midbuf[3]);
1762
1763         return err;
1764 }
1765
1766 asmlinkage int irix_nsproc(unsigned long entry, unsigned long mask,
1767                            unsigned long arg, unsigned long sp, int slen)
1768 {
1769         printk("[%s:%d] Wheee.. irix_nsproc(%08lx,%08lx,%08lx,%08lx,%d)\n",
1770                current->comm, current->pid, entry, mask, arg, sp, slen);
1771
1772         return -EINVAL;
1773 }
1774
1775 #undef DEBUG_GETDENTS
1776
1777 struct irix_dirent32 {
1778         u32  d_ino;
1779         u32  d_off;
1780         unsigned short  d_reclen;
1781         char d_name[1];
1782 };
1783
1784 struct irix_dirent32_callback {
1785         struct irix_dirent32 *current_dir;
1786         struct irix_dirent32 *previous;
1787         int count;
1788         int error;
1789 };
1790
1791 #define NAME_OFFSET32(de) ((int) ((de)->d_name - (char *) (de)))
1792 #define ROUND_UP32(x) (((x)+sizeof(u32)-1) & ~(sizeof(u32)-1))
1793
1794 static int irix_filldir32(void *__buf, const char *name, int namlen,
1795                           loff_t offset, ino_t ino, unsigned int d_type)
1796 {
1797         struct irix_dirent32 *dirent;
1798         struct irix_dirent32_callback *buf =
1799                  (struct irix_dirent32_callback *)__buf;
1800         unsigned short reclen = ROUND_UP32(NAME_OFFSET32(dirent) + namlen + 1);
1801
1802 #ifdef DEBUG_GETDENTS
1803         printk("\nirix_filldir32[reclen<%d>namlen<%d>count<%d>]",
1804                reclen, namlen, buf->count);
1805 #endif
1806         buf->error = -EINVAL;   /* only used if we fail.. */
1807         if (reclen > buf->count)
1808                 return -EINVAL;
1809         dirent = buf->previous;
1810         if (dirent)
1811                 __put_user(offset, &dirent->d_off);
1812         dirent = buf->current_dir;
1813         buf->previous = dirent;
1814         __put_user(ino, &dirent->d_ino);
1815         __put_user(reclen, &dirent->d_reclen);
1816         copy_to_user(dirent->d_name, name, namlen);
1817         __put_user(0, &dirent->d_name[namlen]);
1818         ((char *) dirent) += reclen;
1819         buf->current_dir = dirent;
1820         buf->count -= reclen;
1821
1822         return 0;
1823 }
1824
1825 asmlinkage int irix_ngetdents(unsigned int fd, void * dirent,
1826         unsigned int count, int *eob)
1827 {
1828         struct file *file;
1829         struct irix_dirent32 *lastdirent;
1830         struct irix_dirent32_callback buf;
1831         int error;
1832
1833 #ifdef DEBUG_GETDENTS
1834         printk("[%s:%d] ngetdents(%d, %p, %d, %p) ", current->comm,
1835                current->pid, fd, dirent, count, eob);
1836 #endif
1837         error = -EBADF;
1838         file = fget(fd);
1839         if (!file)
1840                 goto out;
1841
1842         buf.current_dir = (struct irix_dirent32 *) dirent;
1843         buf.previous = NULL;
1844         buf.count = count;
1845         buf.error = 0;
1846
1847         error = vfs_readdir(file, irix_filldir32, &buf);
1848         if (error < 0)
1849                 goto out_putf;
1850
1851         error = buf.error;
1852         lastdirent = buf.previous;
1853         if (lastdirent) {
1854                 put_user(file->f_pos, &lastdirent->d_off);
1855                 error = count - buf.count;
1856         }
1857
1858         if (put_user(0, eob) < 0) {
1859                 error = -EFAULT;
1860                 goto out_putf;
1861         }
1862
1863 #ifdef DEBUG_GETDENTS
1864         printk("eob=%d returning %d\n", *eob, count - buf.count);
1865 #endif
1866         error = count - buf.count;
1867
1868 out_putf:
1869         fput(file);
1870 out:
1871         return error;
1872 }
1873
1874 struct irix_dirent64 {
1875         u64            d_ino;
1876         u64            d_off;
1877         unsigned short d_reclen;
1878         char           d_name[1];
1879 };
1880
1881 struct irix_dirent64_callback {
1882         struct irix_dirent64 *curr;
1883         struct irix_dirent64 *previous;
1884         int count;
1885         int error;
1886 };
1887
1888 #define NAME_OFFSET64(de) ((int) ((de)->d_name - (char *) (de)))
1889 #define ROUND_UP64(x) (((x)+sizeof(u64)-1) & ~(sizeof(u64)-1))
1890
1891 static int irix_filldir64(void * __buf, const char * name, int namlen,
1892                           loff_t offset, ino_t ino, unsigned int d_type)
1893 {
1894         struct irix_dirent64 *dirent;
1895         struct irix_dirent64_callback * buf =
1896                 (struct irix_dirent64_callback *) __buf;
1897         unsigned short reclen = ROUND_UP64(NAME_OFFSET64(dirent) + namlen + 1);
1898
1899         buf->error = -EINVAL;   /* only used if we fail.. */
1900         if (reclen > buf->count)
1901                 return -EINVAL;
1902         dirent = buf->previous;
1903         if (dirent)
1904                 __put_user(offset, &dirent->d_off);
1905         dirent = buf->curr;
1906         buf->previous = dirent;
1907         __put_user(ino, &dirent->d_ino);
1908         __put_user(reclen, &dirent->d_reclen);
1909         __copy_to_user(dirent->d_name, name, namlen);
1910         __put_user(0, &dirent->d_name[namlen]);
1911         ((char *) dirent) += reclen;
1912         buf->curr = dirent;
1913         buf->count -= reclen;
1914
1915         return 0;
1916 }
1917
1918 asmlinkage int irix_getdents64(int fd, void *dirent, int cnt)
1919 {
1920         struct file *file;
1921         struct irix_dirent64 *lastdirent;
1922         struct irix_dirent64_callback buf;
1923         int error;
1924
1925 #ifdef DEBUG_GETDENTS
1926         printk("[%s:%d] getdents64(%d, %p, %d) ", current->comm,
1927                current->pid, fd, dirent, cnt);
1928 #endif
1929         error = -EBADF;
1930         if (!(file = fget(fd)))
1931                 goto out;
1932
1933         error = -EFAULT;
1934         if (!access_ok(VERIFY_WRITE, dirent, cnt))
1935                 goto out_f;
1936
1937         error = -EINVAL;
1938         if (cnt < (sizeof(struct irix_dirent64) + 255))
1939                 goto out_f;
1940
1941         buf.curr = (struct irix_dirent64 *) dirent;
1942         buf.previous = NULL;
1943         buf.count = cnt;
1944         buf.error = 0;
1945         error = vfs_readdir(file, irix_filldir64, &buf);
1946         if (error < 0)
1947                 goto out_f;
1948         lastdirent = buf.previous;
1949         if (!lastdirent) {
1950                 error = buf.error;
1951                 goto out_f;
1952         }
1953         lastdirent->d_off = (u64) file->f_pos;
1954 #ifdef DEBUG_GETDENTS
1955         printk("returning %d\n", cnt - buf.count);
1956 #endif
1957         error = cnt - buf.count;
1958
1959 out_f:
1960         fput(file);
1961 out:
1962         return error;
1963 }
1964
1965 asmlinkage int irix_ngetdents64(int fd, void *dirent, int cnt, int *eob)
1966 {
1967         struct file *file;
1968         struct irix_dirent64 *lastdirent;
1969         struct irix_dirent64_callback buf;
1970         int error;
1971
1972 #ifdef DEBUG_GETDENTS
1973         printk("[%s:%d] ngetdents64(%d, %p, %d) ", current->comm,
1974                current->pid, fd, dirent, cnt);
1975 #endif
1976         error = -EBADF;
1977         if (!(file = fget(fd)))
1978                 goto out;
1979
1980         error = -EFAULT;
1981         if (!access_ok(VERIFY_WRITE, dirent, cnt) ||
1982             !access_ok(VERIFY_WRITE, eob, sizeof(*eob)))
1983                 goto out_f;
1984
1985         error = -EINVAL;
1986         if (cnt < (sizeof(struct irix_dirent64) + 255))
1987                 goto out_f;
1988
1989         *eob = 0;
1990         buf.curr = (struct irix_dirent64 *) dirent;
1991         buf.previous = NULL;
1992         buf.count = cnt;
1993         buf.error = 0;
1994         error = vfs_readdir(file, irix_filldir64, &buf);
1995         if (error < 0)
1996                 goto out_f;
1997         lastdirent = buf.previous;
1998         if (!lastdirent) {
1999                 error = buf.error;
2000                 goto out_f;
2001         }
2002         lastdirent->d_off = (u64) file->f_pos;
2003 #ifdef DEBUG_GETDENTS
2004         printk("eob=%d returning %d\n", *eob, cnt - buf.count);
2005 #endif
2006         error = cnt - buf.count;
2007
2008 out_f:
2009         fput(file);
2010 out:
2011         return error;
2012 }
2013
2014 asmlinkage int irix_uadmin(unsigned long op, unsigned long func, unsigned long arg)
2015 {
2016         int retval;
2017
2018         switch (op) {
2019         case 1:
2020                 /* Reboot */
2021                 printk("[%s:%d] irix_uadmin: Wants to reboot...\n",
2022                        current->comm, current->pid);
2023                 retval = -EINVAL;
2024                 goto out;
2025
2026         case 2:
2027                 /* Shutdown */
2028                 printk("[%s:%d] irix_uadmin: Wants to shutdown...\n",
2029                        current->comm, current->pid);
2030                 retval = -EINVAL;
2031                 goto out;
2032
2033         case 4:
2034                 /* Remount-root */
2035                 printk("[%s:%d] irix_uadmin: Wants to remount root...\n",
2036                        current->comm, current->pid);
2037                 retval = -EINVAL;
2038                 goto out;
2039
2040         case 8:
2041                 /* Kill all tasks. */
2042                 printk("[%s:%d] irix_uadmin: Wants to kill all tasks...\n",
2043                        current->comm, current->pid);
2044                 retval = -EINVAL;
2045                 goto out;
2046
2047         case 256:
2048                 /* Set magic mushrooms... */
2049                 printk("[%s:%d] irix_uadmin: Wants to set magic mushroom[%d]...\n",
2050                        current->comm, current->pid, (int) func);
2051                 retval = -EINVAL;
2052                 goto out;
2053
2054         default:
2055                 printk("[%s:%d] irix_uadmin: Unknown operation [%d]...\n",
2056                        current->comm, current->pid, (int) op);
2057                 retval = -EINVAL;
2058                 goto out;
2059         };
2060
2061 out:
2062         return retval;
2063 }
2064
2065 asmlinkage int irix_utssys(char *inbuf, int arg, int type, char *outbuf)
2066 {
2067         int retval;
2068
2069         switch(type) {
2070         case 0:
2071                 /* uname() */
2072                 retval = irix_uname((struct iuname *)inbuf);
2073                 goto out;
2074
2075         case 2:
2076                 /* ustat() */
2077                 printk("[%s:%d] irix_utssys: Wants to do ustat()\n",
2078                        current->comm, current->pid);
2079                 retval = -EINVAL;
2080                 goto out;
2081
2082         case 3:
2083                 /* fusers() */
2084                 printk("[%s:%d] irix_utssys: Wants to do fusers()\n",
2085                        current->comm, current->pid);
2086                 retval = -EINVAL;
2087                 goto out;
2088
2089         default:
2090                 printk("[%s:%d] irix_utssys: Wants to do unknown type[%d]\n",
2091                        current->comm, current->pid, (int) type);
2092                 retval = -EINVAL;
2093                 goto out;
2094         }
2095
2096 out:
2097         return retval;
2098 }
2099
2100 #undef DEBUG_FCNTL
2101
2102 #define IRIX_F_ALLOCSP 10
2103
2104 asmlinkage int irix_fcntl(int fd, int cmd, int arg)
2105 {
2106         int retval;
2107
2108 #ifdef DEBUG_FCNTL
2109         printk("[%s:%d] irix_fcntl(%d, %d, %d) ", current->comm,
2110                current->pid, fd, cmd, arg);
2111 #endif
2112         if (cmd == IRIX_F_ALLOCSP){
2113                 return 0;
2114         }
2115         retval = sys_fcntl(fd, cmd, arg);
2116 #ifdef DEBUG_FCNTL
2117         printk("%d\n", retval);
2118 #endif
2119         return retval;
2120 }
2121
2122 asmlinkage int irix_ulimit(int cmd, int arg)
2123 {
2124         int retval;
2125
2126         switch(cmd) {
2127         case 1:
2128                 printk("[%s:%d] irix_ulimit: Wants to get file size limit.\n",
2129                        current->comm, current->pid);
2130                 retval = -EINVAL;
2131                 goto out;
2132
2133         case 2:
2134                 printk("[%s:%d] irix_ulimit: Wants to set file size limit.\n",
2135                        current->comm, current->pid);
2136                 retval = -EINVAL;
2137                 goto out;
2138
2139         case 3:
2140                 printk("[%s:%d] irix_ulimit: Wants to get brk limit.\n",
2141                        current->comm, current->pid);
2142                 retval = -EINVAL;
2143                 goto out;
2144
2145         case 4:
2146 #if 0
2147                 printk("[%s:%d] irix_ulimit: Wants to get fd limit.\n",
2148                        current->comm, current->pid);
2149                 retval = -EINVAL;
2150                 goto out;
2151 #endif
2152                 retval = current->signal->rlim[RLIMIT_NOFILE].rlim_cur;
2153                 goto out;
2154
2155         case 5:
2156                 printk("[%s:%d] irix_ulimit: Wants to get txt offset.\n",
2157                        current->comm, current->pid);
2158                 retval = -EINVAL;
2159                 goto out;
2160
2161         default:
2162                 printk("[%s:%d] irix_ulimit: Unknown command [%d].\n",
2163                        current->comm, current->pid, cmd);
2164                 retval = -EINVAL;
2165                 goto out;
2166         }
2167 out:
2168         return retval;
2169 }
2170
2171 asmlinkage int irix_unimp(struct pt_regs *regs)
2172 {
2173         printk("irix_unimp [%s:%d] v0=%d v1=%d a0=%08lx a1=%08lx a2=%08lx "
2174                "a3=%08lx\n", current->comm, current->pid,
2175                (int) regs->regs[2], (int) regs->regs[3],
2176                regs->regs[4], regs->regs[5], regs->regs[6], regs->regs[7]);
2177
2178         return -ENOSYS;
2179 }