arch/sparc64/solaris/misc.c

   1 /* $Id: misc.c,v 1.36 2002/02/09 19:49:31 davem Exp $
   2  * misc.c: Miscellaneous syscall emulation for Solaris
   3  *
   4  * Copyright (C) 1997,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
   5  */
   6
   7 #include <linux/config.h>
   8 #include <linux/module.h>
   9 #include <linux/types.h>
  10 #include <linux/smp_lock.h>
  11 #include <linux/utsname.h>
  12 #include <linux/limits.h>
  13 #include <linux/mm.h>
  14 #include <linux/smp.h>
  15 #include <linux/mman.h>
  16 #include <linux/file.h>
  17 #include <linux/timex.h>
  18 #include <linux/major.h>
  19 #include <linux/compat.h>
  20
  21 #include <asm/uaccess.h>
  22 #include <asm/string.h>
  23 #include <asm/oplib.h>
  24 #include <asm/idprom.h>
  25 #include <asm/smp.h>
  26
  27 #include "conv.h"
  28
  29 /* Conversion from Linux to Solaris errnos. 0-34 are identity mapped.
  30    Some Linux errnos (EPROCLIM, EDOTDOT, ERREMOTE, EUCLEAN, ENOTNAM,
  31    ENAVAIL, EISNAM, EREMOTEIO, ENOMEDIUM, EMEDIUMTYPE) have no Solaris
  32    equivalents. I return EINVAL in that case, which is very wrong. If
  33    someone suggest a better value for them, you're welcomed.
  34    On the other side, Solaris ECANCELED and ENOTSUP have no Linux equivalents,
  35    but that doesn't matter here. --jj */
  36 int solaris_err_table[] = {
  37 /* 0 */  0, 1, 2, 3, 4, 5, 6, 7, 8, 9,
  38 /* 10 */  10, 11, 12, 13, 14, 15, 16, 17, 18, 19,
  39 /* 20 */  20, 21, 22, 23, 24, 25, 26, 27, 28, 29,
  40 /* 30 */  30, 31, 32, 33, 34, 22, 150, 149, 95, 96,
  41 /* 40 */  97, 98, 99, 120, 121, 122, 123, 124, 125, 126,
  42 /* 50 */ 127, 128, 129, 130, 131, 132, 133, 134, 143, 144,
  43 /* 60 */ 145, 146, 90, 78, 147, 148, 93, 22, 94, 49,
  44 /* 70 */ 151, 66, 60, 62, 63, 35, 77, 36, 45, 46,
  45 /* 80 */ 64, 22, 67, 68, 69, 70, 71, 74, 22, 82,
  46 /* 90 */ 89, 92, 79, 81, 37, 38, 39, 40, 41, 42,
  47 /* 100 */ 43, 44, 50, 51, 52, 53, 54, 55, 56, 57,
  48 /* 110 */ 87, 61, 84, 65, 83, 80, 91, 22, 22, 22,
  49 /* 120 */ 22, 22, 88, 86, 85, 22, 22,
  50 };
  51
  52 #define SOLARIS_NR_OPEN 256
  53
  54 static u32 do_solaris_mmap(u32 addr, u32 len, u32 prot, u32 flags, u32 fd, u64 off)
  55 {
  56         struct file *file = NULL;
  57         unsigned long retval, ret_type;
  58
  59         /* Do we need it here? */
  60         set_personality(PER_SVR4);
  61         if (flags & MAP_NORESERVE) {
  62                 static int cnt;
  63
  64                 if (cnt < 5) {
  65                         printk("%s:  unimplemented Solaris MAP_NORESERVE mmap() flag\n",
  66                                current->comm);
  67                         cnt++;
  68                 }
  69                 flags &= ~MAP_NORESERVE;
  70         }
  71         retval = -EBADF;
  72         if(!(flags & MAP_ANONYMOUS)) {
  73                 if(fd >= SOLARIS_NR_OPEN)
  74                         goto out;
  75                 file = fget(fd);
  76                 if (!file)
  77                         goto out;
  78                 else {
  79                         struct inode * inode = file->f_dentry->d_inode;
  80                         if(imajor(inode) == MEM_MAJOR &&
  81                            iminor(inode) == 5) {
  82                                 flags |= MAP_ANONYMOUS;
  83                                 fput(file);
  84                                 file = NULL;
  85                         }
  86                 }
  87         }
  88
  89         retval = -EINVAL;
  90         len = PAGE_ALIGN(len);
  91         if(!(flags & MAP_FIXED))
  92                 addr = 0;
  93         else if (len > 0xf0000000UL || addr > 0xf0000000UL - len)
  94                 goto out_putf;
  95         ret_type = flags & _MAP_NEW;
  96         flags &= ~_MAP_NEW;
  97
  98         down_write(&current->mm->mmap_sem);
  99         flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
 100         retval = do_mmap(file,
 101                          (unsigned long) addr, (unsigned long) len,
 102                          (unsigned long) prot, (unsigned long) flags, off);
 103         up_write(&current->mm->mmap_sem);
 104         if(!ret_type)
 105                 retval = ((retval < 0xf0000000) ? 0 : retval);
 106
 107 out_putf:
 108         if (file)
 109                 fput(file);
 110 out:
 111         return (u32) retval;
 112 }
 113
 114 asmlinkage u32 solaris_mmap(u32 addr, u32 len, u32 prot, u32 flags, u32 fd, u32 off)
 115 {
 116         return do_solaris_mmap(addr, len, prot, flags, fd, (u64) off);
 117 }
 118
 119 asmlinkage u32 solaris_mmap64(struct pt_regs *regs, u32 len, u32 prot, u32 flags, u32 fd, u32 offhi)
 120 {
 121         u32 offlo;
 122
 123         if (regs->u_regs[UREG_G1]) {
 124                 if (get_user (offlo, (u32 __user *)(long)((u32)regs->u_regs[UREG_I6] + 0x5c)))
 125                         return -EFAULT;
 126         } else {
 127                 if (get_user (offlo, (u32 __user *)(long)((u32)regs->u_regs[UREG_I6] + 0x60)))
 128                         return -EFAULT;
 129         }
 130         return do_solaris_mmap((u32)regs->u_regs[UREG_I0], len, prot, flags, fd, (((u64)offhi)<<32)|offlo);
 131 }
 132
 133 asmlinkage int solaris_brk(u32 brk)
 134 {
 135         int (*sunos_brk)(u32) = (int (*)(u32))SUNOS(17);
 136
 137         return sunos_brk(brk);
 138 }
 139
 140 static int __set_utsfield(char __user *to, int to_size,
 141                           const char *from, int from_size,
 142                           int dotchop, int countfrom)
 143 {
 144         int len = countfrom ? (to_size > from_size ?
 145                                from_size : to_size) : to_size;
 146         int off;
 147
 148         if (copy_to_user(to, from, len))
 149                 return -EFAULT;
 150
 151         off = len < to_size? len: len - 1;
 152         if (dotchop) {
 153                 const char *p = strnchr(from, len, '.');
 154                 if (p) off = p - from;
 155         }
 156
 157         if (__put_user('\0', to + off))
 158                 return -EFAULT;
 159
 160         return 0;
 161 }
 162
 163 #define set_utsfield(to, from, dotchop, countfrom) \
 164         __set_utsfield((to), sizeof(to), \
 165                        (from), sizeof(from), \
 166                        (dotchop), (countfrom))
 167
 168 struct sol_uname {
 169         char sysname[9];
 170         char nodename[9];
 171         char release[9];
 172         char version[9];
 173         char machine[9];
 174 };
 175
 176 struct sol_utsname {
 177         char sysname[257];
 178         char nodename[257];
 179         char release[257];
 180         char version[257];
 181         char machine[257];
 182 };
 183
 184 static char *machine(void)
 185 {
 186         switch (sparc_cpu_model) {
 187         case sun4: return "sun4";
 188         case sun4c: return "sun4c";
 189         case sun4e: return "sun4e";
 190         case sun4m: return "sun4m";
 191         case sun4d: return "sun4d";
 192         case sun4u: return "sun4u";
 193         default: return "sparc";
 194         }
 195 }
 196
 197 static char *platform(char *buffer)
 198 {
 199         int len;
 200
 201         *buffer = 0;
 202         len = prom_getproperty(prom_root_node, "name", buffer, 256);
 203         if(len > 0)
 204                 buffer[len] = 0;
 205         if (*buffer) {
 206                 char *p;
 207
 208                 for (p = buffer; *p; p++)
 209                         if (*p == '/' || *p == ' ') *p = '_';
 210                 return buffer;
 211         }
 212
 213         return "sun4u";
 214 }
 215
 216 static char *serial(char *buffer)
 217 {
 218         int node = prom_getchild(prom_root_node);
 219         int len;
 220
 221         node = prom_searchsiblings(node, "options");
 222         *buffer = 0;
 223         len = prom_getproperty(node, "system-board-serial#", buffer, 256);
 224         if(len > 0)
 225                 buffer[len] = 0;
 226         if (!*buffer)
 227                 return "4512348717234";
 228         else
 229                 return buffer;
 230 }
 231
 232 asmlinkage int solaris_utssys(u32 buf, u32 flags, int which, u32 buf2)
 233 {
 234         struct sol_uname __user *v = A(buf);
 235         int err;
 236
 237         switch (which) {
 238         case 0: /* old uname */
 239                 /* Let's cheat */
 240                 err  = set_utsfield(v->sysname, "SunOS", 1, 0);
 241                 down_read(&uts_sem);
 242                 err |= set_utsfield(v->nodename, system_utsname.nodename,
 243                                     1, 1);
 244                 up_read(&uts_sem);
 245                 err |= set_utsfield(v->release, "2.6", 0, 0);
 246                 err |= set_utsfield(v->version, "Generic", 0, 0);
 247                 err |= set_utsfield(v->machine, machine(), 0, 0);
 248                 return (err ? -EFAULT : 0);
 249         case 2: /* ustat */
 250                 return -ENOSYS;
 251         case 3: /* fusers */
 252                 return -ENOSYS;
 253         default:
 254                 return -ENOSYS;
 255         }
 256 }
 257
 258 asmlinkage int solaris_utsname(u32 buf)
 259 {
 260         struct sol_utsname __user *v = A(buf);
 261         int err;
 262
 263         /* Why should we not lie a bit? */
 264         down_read(&uts_sem);
 265         err  = set_utsfield(v->sysname, "SunOS", 0, 0);
 266         err |= set_utsfield(v->nodename, system_utsname.nodename, 1, 1);
 267         err |= set_utsfield(v->release, "5.6", 0, 0);
 268         err |= set_utsfield(v->version, "Generic", 0, 0);
 269         err |= set_utsfield(v->machine, machine(), 0, 0);
 270         up_read(&uts_sem);
 271
 272         return (err ? -EFAULT : 0);
 273 }
 274
 275 #define SI_SYSNAME              1       /* return name of operating system */
 276 #define SI_HOSTNAME             2       /* return name of node */
 277 #define SI_RELEASE              3       /* return release of operating system */
 278 #define SI_VERSION              4       /* return version field of utsname */
 279 #define SI_MACHINE              5       /* return kind of machine */
 280 #define SI_ARCHITECTURE         6       /* return instruction set arch */
 281 #define SI_HW_SERIAL            7       /* return hardware serial number */
 282 #define SI_HW_PROVIDER          8       /* return hardware manufacturer */
 283 #define SI_SRPC_DOMAIN          9       /* return secure RPC domain */
 284 #define SI_PLATFORM             513     /* return platform identifier */
 285
 286 asmlinkage int solaris_sysinfo(int cmd, u32 buf, s32 count)
 287 {
 288         char *p, *q, *r;
 289         char buffer[256];
 290         int len;
 291
 292         /* Again, we cheat :)) */
 293         switch (cmd) {
 294         case SI_SYSNAME: r = "SunOS"; break;
 295         case SI_HOSTNAME:
 296                 r = buffer + 256;
 297                 down_read(&uts_sem);
 298                 for (p = system_utsname.nodename, q = buffer;
 299                      q < r && *p && *p != '.'; *q++ = *p++);
 300                 up_read(&uts_sem);
 301                 *q = 0;
 302                 r = buffer;
 303                 break;
 304         case SI_RELEASE: r = "5.6"; break;
 305         case SI_MACHINE: r = machine(); break;
 306         case SI_ARCHITECTURE: r = "sparc"; break;
 307         case SI_HW_PROVIDER: r = "Sun_Microsystems"; break;
 308         case SI_HW_SERIAL: r = serial(buffer); break;
 309         case SI_PLATFORM: r = platform(buffer); break;
 310         case SI_SRPC_DOMAIN: r = ""; break;
 311         case SI_VERSION: r = "Generic"; break;
 312         default: return -EINVAL;
 313         }
 314         len = strlen(r) + 1;
 315         if (count < len) {
 316                 if (copy_to_user(A(buf), r, count - 1) ||
 317                     __put_user(0, (char __user *)A(buf) + count - 1))
 318                         return -EFAULT;
 319         } else {
 320                 if (copy_to_user(A(buf), r, len))
 321                         return -EFAULT;
 322         }
 323         return len;
 324 }
 325
 326 #define SOLARIS_CONFIG_NGROUPS                  2
 327 #define SOLARIS_CONFIG_CHILD_MAX                3
 328 #define SOLARIS_CONFIG_OPEN_FILES               4
 329 #define SOLARIS_CONFIG_POSIX_VER                5
 330 #define SOLARIS_CONFIG_PAGESIZE                 6
 331 #define SOLARIS_CONFIG_CLK_TCK                  7
 332 #define SOLARIS_CONFIG_XOPEN_VER                8
 333 #define SOLARIS_CONFIG_PROF_TCK                 10
 334 #define SOLARIS_CONFIG_NPROC_CONF               11
 335 #define SOLARIS_CONFIG_NPROC_ONLN               12
 336 #define SOLARIS_CONFIG_AIO_LISTIO_MAX           13
 337 #define SOLARIS_CONFIG_AIO_MAX                  14
 338 #define SOLARIS_CONFIG_AIO_PRIO_DELTA_MAX       15
 339 #define SOLARIS_CONFIG_DELAYTIMER_MAX           16
 340 #define SOLARIS_CONFIG_MQ_OPEN_MAX              17
 341 #define SOLARIS_CONFIG_MQ_PRIO_MAX              18
 342 #define SOLARIS_CONFIG_RTSIG_MAX                19
 343 #define SOLARIS_CONFIG_SEM_NSEMS_MAX            20
 344 #define SOLARIS_CONFIG_SEM_VALUE_MAX            21
 345 #define SOLARIS_CONFIG_SIGQUEUE_MAX             22
 346 #define SOLARIS_CONFIG_SIGRT_MIN                23
 347 #define SOLARIS_CONFIG_SIGRT_MAX                24
 348 #define SOLARIS_CONFIG_TIMER_MAX                25
 349 #define SOLARIS_CONFIG_PHYS_PAGES               26
 350 #define SOLARIS_CONFIG_AVPHYS_PAGES             27
 351
 352 asmlinkage int solaris_sysconf(int id)
 353 {
 354         switch (id) {
 355         case SOLARIS_CONFIG_NGROUPS:    return NGROUPS_MAX;
 356         case SOLARIS_CONFIG_CHILD_MAX:  return CHILD_MAX;
 357         case SOLARIS_CONFIG_OPEN_FILES: return OPEN_MAX;
 358         case SOLARIS_CONFIG_POSIX_VER:  return 199309;
 359         case SOLARIS_CONFIG_PAGESIZE:   return PAGE_SIZE;
 360         case SOLARIS_CONFIG_XOPEN_VER:  return 3;
 361         case SOLARIS_CONFIG_CLK_TCK:
 362         case SOLARIS_CONFIG_PROF_TCK:
 363                 return sparc64_get_clock_tick(smp_processor_id());
 364 #ifdef CONFIG_SMP
 365         case SOLARIS_CONFIG_NPROC_CONF: return NR_CPUS;
 366         case SOLARIS_CONFIG_NPROC_ONLN: return num_online_cpus();
 367 #else
 368         case SOLARIS_CONFIG_NPROC_CONF: return 1;
 369         case SOLARIS_CONFIG_NPROC_ONLN: return 1;
 370 #endif
 371         case SOLARIS_CONFIG_SIGRT_MIN:          return 37;
 372         case SOLARIS_CONFIG_SIGRT_MAX:          return 44;
 373         case SOLARIS_CONFIG_PHYS_PAGES:
 374         case SOLARIS_CONFIG_AVPHYS_PAGES:
 375                 {
 376                         struct sysinfo s;
 377
 378                         si_meminfo(&s);
 379                         if (id == SOLARIS_CONFIG_PHYS_PAGES)
 380                                 return s.totalram >>= PAGE_SHIFT;
 381                         else
 382                                 return s.freeram >>= PAGE_SHIFT;
 383                 }
 384         /* XXX support these as well -jj */
 385         case SOLARIS_CONFIG_AIO_LISTIO_MAX:     return -EINVAL;
 386         case SOLARIS_CONFIG_AIO_MAX:            return -EINVAL;
 387         case SOLARIS_CONFIG_AIO_PRIO_DELTA_MAX: return -EINVAL;
 388         case SOLARIS_CONFIG_DELAYTIMER_MAX:     return -EINVAL;
 389         case SOLARIS_CONFIG_MQ_OPEN_MAX:        return -EINVAL;
 390         case SOLARIS_CONFIG_MQ_PRIO_MAX:        return -EINVAL;
 391         case SOLARIS_CONFIG_RTSIG_MAX:          return -EINVAL;
 392         case SOLARIS_CONFIG_SEM_NSEMS_MAX:      return -EINVAL;
 393         case SOLARIS_CONFIG_SEM_VALUE_MAX:      return -EINVAL;
 394         case SOLARIS_CONFIG_SIGQUEUE_MAX:       return -EINVAL;
 395         case SOLARIS_CONFIG_TIMER_MAX:          return -EINVAL;
 396         default: return -EINVAL;
 397         }
 398 }
 399
 400 asmlinkage int solaris_procids(int cmd, s32 pid, s32 pgid)
 401 {
 402         int ret;
 403
 404         switch (cmd) {
 405         case 0: /* getpgrp */
 406                 return process_group(current);
 407         case 1: /* setpgrp */
 408                 {
 409                         int (*sys_setpgid)(pid_t,pid_t) =
 410                                 (int (*)(pid_t,pid_t))SYS(setpgid);
 411
 412                         /* can anyone explain me the difference between
 413                            Solaris setpgrp and setsid? */
 414                         ret = sys_setpgid(0, 0);
 415                         if (ret) return ret;
 416                         current->signal->tty = NULL;
 417                         return process_group(current);
 418                 }
 419         case 2: /* getsid */
 420                 {
 421                         int (*sys_getsid)(pid_t) = (int (*)(pid_t))SYS(getsid);
 422                         return sys_getsid(pid);
 423                 }
 424         case 3: /* setsid */
 425                 {
 426                         int (*sys_setsid)(void) = (int (*)(void))SYS(setsid);
 427                         return sys_setsid();
 428                 }
 429         case 4: /* getpgid */
 430                 {
 431                         int (*sys_getpgid)(pid_t) = (int (*)(pid_t))SYS(getpgid);
 432                         return sys_getpgid(pid);
 433                 }
 434         case 5: /* setpgid */
 435                 {
 436                         int (*sys_setpgid)(pid_t,pid_t) =
 437                                 (int (*)(pid_t,pid_t))SYS(setpgid);
 438                         return sys_setpgid(pid,pgid);
 439                 }
 440         }
 441         return -EINVAL;
 442 }
 443
 444 asmlinkage int solaris_gettimeofday(u32 tim)
 445 {
 446         int (*sys_gettimeofday)(struct timeval *, struct timezone *) =
 447                 (int (*)(struct timeval *, struct timezone *))SYS(gettimeofday);
 448
 449         return sys_gettimeofday((struct timeval *)(u64)tim, NULL);
 450 }
 451
 452 #define RLIM_SOL_INFINITY32     0x7fffffff
 453 #define RLIM_SOL_SAVED_MAX32    0x7ffffffe
 454 #define RLIM_SOL_SAVED_CUR32    0x7ffffffd
 455 #define RLIM_SOL_INFINITY       ((u64)-3)
 456 #define RLIM_SOL_SAVED_MAX      ((u64)-2)
 457 #define RLIM_SOL_SAVED_CUR      ((u64)-1)
 458 #define RESOURCE32(x) ((x > RLIM_INFINITY32) ? RLIM_INFINITY32 : x)
 459 #define RLIMIT_SOL_NOFILE       5
 460 #define RLIMIT_SOL_VMEM         6
 461
 462 struct rlimit32 {
 463         u32     rlim_cur;
 464         u32     rlim_max;
 465 };
 466
 467 asmlinkage int solaris_getrlimit(unsigned int resource, struct rlimit32 __user *rlim)
 468 {
 469         struct rlimit r;
 470         int ret;
 471         mm_segment_t old_fs = get_fs ();
 472         int (*sys_getrlimit)(unsigned int, struct rlimit *) =
 473                 (int (*)(unsigned int, struct rlimit *))SYS(getrlimit);
 474
 475         if (resource > RLIMIT_SOL_VMEM)
 476                 return -EINVAL;
 477         switch (resource) {
 478         case RLIMIT_SOL_NOFILE: resource = RLIMIT_NOFILE; break;
 479         case RLIMIT_SOL_VMEM: resource = RLIMIT_AS; break;
 480         default: break;
 481         }
 482         set_fs (KERNEL_DS);
 483         ret = sys_getrlimit(resource, &r);
 484         set_fs (old_fs);
 485         if (!ret) {
 486                 if (r.rlim_cur == RLIM_INFINITY)
 487                         r.rlim_cur = RLIM_SOL_INFINITY32;
 488                 else if ((u64)r.rlim_cur > RLIM_SOL_INFINITY32)
 489                         r.rlim_cur = RLIM_SOL_SAVED_CUR32;
 490                 if (r.rlim_max == RLIM_INFINITY)
 491                         r.rlim_max = RLIM_SOL_INFINITY32;
 492                 else if ((u64)r.rlim_max > RLIM_SOL_INFINITY32)
 493                         r.rlim_max = RLIM_SOL_SAVED_MAX32;
 494                 ret = put_user (r.rlim_cur, &rlim->rlim_cur);
 495                 ret |= __put_user (r.rlim_max, &rlim->rlim_max);
 496         }
 497         return ret;
 498 }
 499
 500 asmlinkage int solaris_setrlimit(unsigned int resource, struct rlimit32 __user *rlim)
 501 {
 502         struct rlimit r, rold;
 503         int ret;
 504         mm_segment_t old_fs = get_fs ();
 505         int (*sys_getrlimit)(unsigned int, struct rlimit __user *) =
 506                 (int (*)(unsigned int, struct rlimit __user *))SYS(getrlimit);
 507         int (*sys_setrlimit)(unsigned int, struct rlimit __user *) =
 508                 (int (*)(unsigned int, struct rlimit __user *))SYS(setrlimit);
 509
 510         if (resource > RLIMIT_SOL_VMEM)
 511                 return -EINVAL;
 512         switch (resource) {
 513         case RLIMIT_SOL_NOFILE: resource = RLIMIT_NOFILE; break;
 514         case RLIMIT_SOL_VMEM: resource = RLIMIT_AS; break;
 515         default: break;
 516         }
 517         if (get_user (r.rlim_cur, &rlim->rlim_cur) ||
 518             __get_user (r.rlim_max, &rlim->rlim_max))
 519                 return -EFAULT;
 520         set_fs (KERNEL_DS);
 521         ret = sys_getrlimit(resource, &rold);
 522         if (!ret) {
 523                 if (r.rlim_cur == RLIM_SOL_INFINITY32)
 524                         r.rlim_cur = RLIM_INFINITY;
 525                 else if (r.rlim_cur == RLIM_SOL_SAVED_CUR32)
 526                         r.rlim_cur = rold.rlim_cur;
 527                 else if (r.rlim_cur == RLIM_SOL_SAVED_MAX32)
 528                         r.rlim_cur = rold.rlim_max;
 529                 if (r.rlim_max == RLIM_SOL_INFINITY32)
 530                         r.rlim_max = RLIM_INFINITY;
 531                 else if (r.rlim_max == RLIM_SOL_SAVED_CUR32)
 532                         r.rlim_max = rold.rlim_cur;
 533                 else if (r.rlim_max == RLIM_SOL_SAVED_MAX32)
 534                         r.rlim_max = rold.rlim_max;
 535                 ret = sys_setrlimit(resource, &r);
 536         }
 537         set_fs (old_fs);
 538         return ret;
 539 }
 540
 541 asmlinkage int solaris_getrlimit64(unsigned int resource, struct rlimit __user *rlim)
 542 {
 543         struct rlimit r;
 544         int ret;
 545         mm_segment_t old_fs = get_fs ();
 546         int (*sys_getrlimit)(unsigned int, struct rlimit __user *) =
 547                 (int (*)(unsigned int, struct rlimit __user *))SYS(getrlimit);
 548
 549         if (resource > RLIMIT_SOL_VMEM)
 550                 return -EINVAL;
 551         switch (resource) {
 552         case RLIMIT_SOL_NOFILE: resource = RLIMIT_NOFILE; break;
 553         case RLIMIT_SOL_VMEM: resource = RLIMIT_AS; break;
 554         default: break;
 555         }
 556         set_fs (KERNEL_DS);
 557         ret = sys_getrlimit(resource, &r);
 558         set_fs (old_fs);
 559         if (!ret) {
 560                 if (r.rlim_cur == RLIM_INFINITY)
 561                         r.rlim_cur = RLIM_SOL_INFINITY;
 562                 if (r.rlim_max == RLIM_INFINITY)
 563                         r.rlim_max = RLIM_SOL_INFINITY;
 564                 ret = put_user (r.rlim_cur, &rlim->rlim_cur);
 565                 ret |= __put_user (r.rlim_max, &rlim->rlim_max);
 566         }
 567         return ret;
 568 }
 569
 570 asmlinkage int solaris_setrlimit64(unsigned int resource, struct rlimit __user *rlim)
 571 {
 572         struct rlimit r, rold;
 573         int ret;
 574         mm_segment_t old_fs = get_fs ();
 575         int (*sys_getrlimit)(unsigned int, struct rlimit __user *) =
 576                 (int (*)(unsigned int, struct rlimit __user *))SYS(getrlimit);
 577         int (*sys_setrlimit)(unsigned int, struct rlimit __user *) =
 578                 (int (*)(unsigned int, struct rlimit __user *))SYS(setrlimit);
 579
 580         if (resource > RLIMIT_SOL_VMEM)
 581                 return -EINVAL;
 582         switch (resource) {
 583         case RLIMIT_SOL_NOFILE: resource = RLIMIT_NOFILE; break;
 584         case RLIMIT_SOL_VMEM: resource = RLIMIT_AS; break;
 585         default: break;
 586         }
 587         if (get_user (r.rlim_cur, &rlim->rlim_cur) ||
 588             __get_user (r.rlim_max, &rlim->rlim_max))
 589                 return -EFAULT;
 590         set_fs (KERNEL_DS);
 591         ret = sys_getrlimit(resource, &rold);
 592         if (!ret) {
 593                 if (r.rlim_cur == RLIM_SOL_INFINITY)
 594                         r.rlim_cur = RLIM_INFINITY;
 595                 else if (r.rlim_cur == RLIM_SOL_SAVED_CUR)
 596                         r.rlim_cur = rold.rlim_cur;
 597                 else if (r.rlim_cur == RLIM_SOL_SAVED_MAX)
 598                         r.rlim_cur = rold.rlim_max;
 599                 if (r.rlim_max == RLIM_SOL_INFINITY)
 600                         r.rlim_max = RLIM_INFINITY;
 601                 else if (r.rlim_max == RLIM_SOL_SAVED_CUR)
 602                         r.rlim_max = rold.rlim_cur;
 603                 else if (r.rlim_max == RLIM_SOL_SAVED_MAX)
 604                         r.rlim_max = rold.rlim_max;
 605                 ret = sys_setrlimit(resource, &r);
 606         }
 607         set_fs (old_fs);
 608         return ret;
 609 }
 610
 611 struct sol_ntptimeval {
 612         struct compat_timeval time;
 613         s32 maxerror;
 614         s32 esterror;
 615 };
 616
 617 struct sol_timex {
 618         u32 modes;
 619         s32 offset;
 620         s32 freq;
 621         s32 maxerror;
 622         s32 esterror;
 623         s32 status;
 624         s32 constant;
 625         s32 precision;
 626         s32 tolerance;
 627         s32 ppsfreq;
 628         s32 jitter;
 629         s32 shift;
 630         s32 stabil;
 631         s32 jitcnt;
 632         s32 calcnt;
 633         s32 errcnt;
 634         s32 stbcnt;
 635 };
 636
 637 asmlinkage int solaris_ntp_gettime(struct sol_ntptimeval __user *ntp)
 638 {
 639         int (*sys_adjtimex)(struct timex __user *) =
 640                 (int (*)(struct timex __user *))SYS(adjtimex);
 641         struct timex t;
 642         int ret;
 643         mm_segment_t old_fs = get_fs();
 644
 645         set_fs(KERNEL_DS);
 646         t.modes = 0;
 647         ret = sys_adjtimex(&t);
 648         set_fs(old_fs);
 649         if (ret < 0)
 650                 return ret;
 651         ret = put_user (t.time.tv_sec, &ntp->time.tv_sec);
 652         ret |= __put_user (t.time.tv_usec, &ntp->time.tv_usec);
 653         ret |= __put_user (t.maxerror, &ntp->maxerror);
 654         ret |= __put_user (t.esterror, &ntp->esterror);
 655         return ret;
 656 }
 657
 658 asmlinkage int solaris_ntp_adjtime(struct sol_timex __user *txp)
 659 {
 660         int (*sys_adjtimex)(struct timex __user *) =
 661                 (int (*)(struct timex __user *))SYS(adjtimex);
 662         struct timex t;
 663         int ret, err;
 664         mm_segment_t old_fs = get_fs();
 665
 666         ret = get_user (t.modes, &txp->modes);
 667         ret |= __get_user (t.offset, &txp->offset);
 668         ret |= __get_user (t.freq, &txp->freq);
 669         ret |= __get_user (t.maxerror, &txp->maxerror);
 670         ret |= __get_user (t.esterror, &txp->esterror);
 671         ret |= __get_user (t.status, &txp->status);
 672         ret |= __get_user (t.constant, &txp->constant);
 673         set_fs(KERNEL_DS);
 674         ret = sys_adjtimex(&t);
 675         set_fs(old_fs);
 676         if (ret < 0)
 677                 return ret;
 678         err = put_user (t.offset, &txp->offset);
 679         err |= __put_user (t.freq, &txp->freq);
 680         err |= __put_user (t.maxerror, &txp->maxerror);
 681         err |= __put_user (t.esterror, &txp->esterror);
 682         err |= __put_user (t.status, &txp->status);
 683         err |= __put_user (t.constant, &txp->constant);
 684         err |= __put_user (t.precision, &txp->precision);
 685         err |= __put_user (t.tolerance, &txp->tolerance);
 686         err |= __put_user (t.ppsfreq, &txp->ppsfreq);
 687         err |= __put_user (t.jitter, &txp->jitter);
 688         err |= __put_user (t.shift, &txp->shift);
 689         err |= __put_user (t.stabil, &txp->stabil);
 690         err |= __put_user (t.jitcnt, &txp->jitcnt);
 691         err |= __put_user (t.calcnt, &txp->calcnt);
 692         err |= __put_user (t.errcnt, &txp->errcnt);
 693         err |= __put_user (t.stbcnt, &txp->stbcnt);
 694         if (err)
 695                 return -EFAULT;
 696         return ret;
 697 }
 698
 699 asmlinkage int do_sol_unimplemented(struct pt_regs *regs)
 700 {
 701         printk ("Unimplemented Solaris syscall %d %08x %08x %08x %08x\n",
 702                         (int)regs->u_regs[UREG_G1],
 703                         (int)regs->u_regs[UREG_I0],
 704                         (int)regs->u_regs[UREG_I1],
 705                         (int)regs->u_regs[UREG_I2],
 706                         (int)regs->u_regs[UREG_I3]);
 707         return -ENOSYS;
 708 }
 709
 710 asmlinkage void solaris_register(void)
 711 {
 712         set_personality(PER_SVR4);
 713 }
 714
 715 extern long solaris_to_linux_signals[], linux_to_solaris_signals[];
 716
 717 struct exec_domain solaris_exec_domain = {
 718         .name =         "Solaris",
 719         .handler =      NULL,
 720         .pers_low =     1,              /* PER_SVR4 personality */
 721         .pers_high =    1,
 722         .signal_map =   solaris_to_linux_signals,
 723         .signal_invmap =linux_to_solaris_signals,
 724         .module =       THIS_MODULE,
 725         .next =         NULL
 726 };
 727
 728 extern int init_socksys(void);
 729
 730 #ifdef MODULE
 731
 732 MODULE_AUTHOR("Jakub Jelinek (jj@ultra.linux.cz), Patrik Rak (prak3264@ss1000.ms.mff.cuni.cz)");
 733 MODULE_DESCRIPTION("Solaris binary emulation module");
 734 MODULE_LICENSE("GPL");
 735
 736 #ifdef __sparc_v9__
 737 extern u32 tl0_solaris[8];
 738 #define update_ttable(x)                                                                                \
 739         tl0_solaris[3] = (((long)(x) - (long)tl0_solaris - 3) >> 2) | 0x40000000;                       \
 740         __asm__ __volatile__ ("membar #StoreStore; flush %0" : : "r" (&tl0_solaris[3]))
 741 #else
 742 #endif
 743
 744 extern u32 solaris_sparc_syscall[];
 745 extern u32 solaris_syscall[];
 746 extern void cleanup_socksys(void);
 747
 748 extern u32 entry64_personality_patch;
 749
 750 int init_module(void)
 751 {
 752         int ret;
 753
 754         SOLDD(("Solaris module at %p\n", solaris_sparc_syscall));
 755         register_exec_domain(&solaris_exec_domain);
 756         if ((ret = init_socksys())) {
 757                 unregister_exec_domain(&solaris_exec_domain);
 758                 return ret;
 759         }
 760         update_ttable(solaris_sparc_syscall);
 761         entry64_personality_patch |=
 762                 (offsetof(struct task_struct, personality) +
 763                  (sizeof(unsigned long) - 1));
 764         __asm__ __volatile__("membar #StoreStore; flush %0"
 765                              : : "r" (&entry64_personality_patch));
 766         return 0;
 767 }
 768
 769 void cleanup_module(void)
 770 {
 771         update_ttable(solaris_syscall);
 772         cleanup_socksys();
 773         unregister_exec_domain(&solaris_exec_domain);
 774 }
 775
 776 #else
 777 int init_solaris_emul(void)
 778 {
 779         register_exec_domain(&solaris_exec_domain);
 780         init_socksys();
 781         return 0;
 782 }
 783 #endif
 784