linux-user/syscall.c

   1 /*
   2  *  Linux syscalls
   3  *
   4  *  Copyright (c) 2003 Fabrice Bellard
   5  *
   6  *  This program is free software; you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License as published by
   8  *  the Free Software Foundation; either version 2 of the License, or
   9  *  (at your option) any later version.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with this program; if not, write to the Free Software
  18  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  19  */
  20 #include <stdlib.h>
  21 #include <stdio.h>
  22 #include <stdarg.h>
  23 #include <string.h>
  24 #include <elf.h>
  25 #include <endian.h>
  26 #include <errno.h>
  27 #include <unistd.h>
  28 #include <fcntl.h>
  29 #include <time.h>
  30 #include <sys/types.h>
  31 #include <sys/ipc.h>
  32 #include <sys/msg.h>
  33 #include <sys/wait.h>
  34 #include <sys/time.h>
  35 #include <sys/stat.h>
  36 #include <sys/mount.h>
  37 #include <sys/prctl.h>
  38 #include <sys/resource.h>
  39 #include <sys/mman.h>
  40 #include <sys/swap.h>
  41 #include <signal.h>
  42 #include <sched.h>
  43 #include <sys/socket.h>
  44 #include <sys/uio.h>
  45 #include <sys/poll.h>
  46 #include <sys/times.h>
  47 #include <sys/shm.h>
  48 #include <sys/sem.h>
  49 #include <sys/statfs.h>
  50 #include <utime.h>
  51 #include <sys/sysinfo.h>
  52 //#include <sys/user.h>
  53 #include <netinet/ip.h>
  54 #include <netinet/tcp.h>
  55
  56 #define termios host_termios
  57 #define winsize host_winsize
  58 #define termio host_termio
  59 #define sgttyb host_sgttyb /* same as target */
  60 #define tchars host_tchars /* same as target */
  61 #define ltchars host_ltchars /* same as target */
  62
  63 #include <linux/termios.h>
  64 #include <linux/unistd.h>
  65 #include <linux/utsname.h>
  66 #include <linux/cdrom.h>
  67 #include <linux/hdreg.h>
  68 #include <linux/soundcard.h>
  69 #include <linux/dirent.h>
  70 #include <linux/kd.h>
  71
  72 #include "qemu.h"
  73
  74 //#define DEBUG
  75
  76 #if defined(TARGET_I386) || defined(TARGET_ARM) || defined(TARGET_SPARC) \
  77     || defined(TARGET_M68K) || defined(TARGET_SH4)
  78 /* 16 bit uid wrappers emulation */
  79 #define USE_UID16
  80 #endif
  81
  82 //#include <linux/msdos_fs.h>
  83 #define VFAT_IOCTL_READDIR_BOTH         _IOR('r', 1, struct dirent [2])
  84 #define VFAT_IOCTL_READDIR_SHORT        _IOR('r', 2, struct dirent [2])
  85
  86
  87 #undef _syscall0
  88 #undef _syscall1
  89 #undef _syscall2
  90 #undef _syscall3
  91 #undef _syscall4
  92 #undef _syscall5
  93 #undef _syscall6
  94
  95 #define _syscall0(type,name)            \
  96 type name (void)                        \
  97 {                                       \
  98         return syscall(__NR_##name);    \
  99 }
 100
 101 #define _syscall1(type,name,type1,arg1)         \
 102 type name (type1 arg1)                          \
 103 {                                               \
 104         return syscall(__NR_##name, arg1);      \
 105 }
 106
 107 #define _syscall2(type,name,type1,arg1,type2,arg2)      \
 108 type name (type1 arg1,type2 arg2)                       \
 109 {                                                       \
 110         return syscall(__NR_##name, arg1, arg2);        \
 111 }
 112
 113 #define _syscall3(type,name,type1,arg1,type2,arg2,type3,arg3)   \
 114 type name (type1 arg1,type2 arg2,type3 arg3)                    \
 115 {                                                               \
 116         return syscall(__NR_##name, arg1, arg2, arg3);          \
 117 }
 118
 119 #define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4)        \
 120 type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4)                         \
 121 {                                                                               \
 122         return syscall(__NR_##name, arg1, arg2, arg3, arg4);                    \
 123 }
 124
 125 #define _syscall5(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4,        \
 126                   type5,arg5)                                                   \
 127 type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5)              \
 128 {                                                                               \
 129         return syscall(__NR_##name, arg1, arg2, arg3, arg4, arg5);              \
 130 }
 131
 132
 133 #define _syscall6(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4,        \
 134                   type5,arg5,type6,arg6)                                        \
 135 type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5,type6 arg6)   \
 136 {                                                                               \
 137         return syscall(__NR_##name, arg1, arg2, arg3, arg4, arg5, arg6);        \
 138 }
 139
 140
 141 #define __NR_sys_uname __NR_uname
 142 #define __NR_sys_getcwd1 __NR_getcwd
 143 #define __NR_sys_getdents __NR_getdents
 144 #define __NR_sys_getdents64 __NR_getdents64
 145 #define __NR_sys_rt_sigqueueinfo __NR_rt_sigqueueinfo
 146 #define __NR_sys_syslog __NR_syslog
 147 #define __NR_sys_tgkill __NR_tgkill
 148 #define __NR_sys_tkill __NR_tkill
 149
 150 #if defined(__alpha__) || defined (__ia64__) || defined(__x86_64__)
 151 #define __NR__llseek __NR_lseek
 152 #endif
 153
 154 #ifdef __NR_gettid
 155 _syscall0(int, gettid)
 156 #else
 157 static int gettid(void) {
 158     return -ENOSYS;
 159 }
 160 #endif
 161 _syscall1(int,sys_uname,struct new_utsname *,buf)
 162 _syscall2(int,sys_getcwd1,char *,buf,size_t,size)
 163 _syscall3(int, sys_getdents, uint, fd, struct dirent *, dirp, uint, count);
 164 _syscall3(int, sys_getdents64, uint, fd, struct dirent64 *, dirp, uint, count);
 165 _syscall5(int, _llseek,  uint,  fd, ulong, hi, ulong, lo,
 166           loff_t *, res, uint, wh);
 167 _syscall3(int,sys_rt_sigqueueinfo,int,pid,int,sig,siginfo_t *,uinfo)
 168 _syscall3(int,sys_syslog,int,type,char*,bufp,int,len)
 169 #ifdef TARGET_NR_tgkill
 170 _syscall3(int,sys_tgkill,int,tgid,int,pid,int,sig)
 171 #endif
 172 #ifdef TARGET_NR_tkill
 173 _syscall2(int,sys_tkill,int,tid,int,sig)
 174 #endif
 175 #ifdef __NR_exit_group
 176 _syscall1(int,exit_group,int,error_code)
 177 #endif
 178 #if defined(TARGET_NR_set_tid_address) && defined(__NR_set_tid_address)
 179 _syscall1(int,set_tid_address,int *,tidptr)
 180 #endif
 181
 182 extern int personality(int);
 183 extern int flock(int, int);
 184 extern int setfsuid(int);
 185 extern int setfsgid(int);
 186 extern int setresuid(uid_t, uid_t, uid_t);
 187 extern int getresuid(uid_t *, uid_t *, uid_t *);
 188 extern int setresgid(gid_t, gid_t, gid_t);
 189 extern int getresgid(gid_t *, gid_t *, gid_t *);
 190 extern int setgroups(int, gid_t *);
 191
 192 /*
 193  * This list is the union of errno values overridden in asm-<arch>/errno.h
 194  * minus the errnos that are not actually generic to all archs.
 195  */
 196 static uint16_t host_to_target_errno_table[1200] = {
 197     [EIDRM]             = TARGET_EIDRM,
 198     [ECHRNG]            = TARGET_ECHRNG,
 199     [EL2NSYNC]          = TARGET_EL2NSYNC,
 200     [EL3HLT]            = TARGET_EL3HLT,
 201     [EL3RST]            = TARGET_EL3RST,
 202     [ELNRNG]            = TARGET_ELNRNG,
 203     [EUNATCH]           = TARGET_EUNATCH,
 204     [ENOCSI]            = TARGET_ENOCSI,
 205     [EL2HLT]            = TARGET_EL2HLT,
 206     [EDEADLK]           = TARGET_EDEADLK,
 207     [ENOLCK]            = TARGET_ENOLCK,
 208     [EBADE]             = TARGET_EBADE,
 209     [EBADR]             = TARGET_EBADR,
 210     [EXFULL]            = TARGET_EXFULL,
 211     [ENOANO]            = TARGET_ENOANO,
 212     [EBADRQC]           = TARGET_EBADRQC,
 213     [EBADSLT]           = TARGET_EBADSLT,
 214     [EBFONT]            = TARGET_EBFONT,
 215     [ENOSTR]            = TARGET_ENOSTR,
 216     [ENODATA]           = TARGET_ENODATA,
 217     [ETIME]             = TARGET_ETIME,
 218     [ENOSR]             = TARGET_ENOSR,
 219     [ENONET]            = TARGET_ENONET,
 220     [ENOPKG]            = TARGET_ENOPKG,
 221     [EREMOTE]           = TARGET_EREMOTE,
 222     [ENOLINK]           = TARGET_ENOLINK,
 223     [EADV]              = TARGET_EADV,
 224     [ESRMNT]            = TARGET_ESRMNT,
 225     [ECOMM]             = TARGET_ECOMM,
 226     [EPROTO]            = TARGET_EPROTO,
 227     [EDOTDOT]           = TARGET_EDOTDOT,
 228     [EMULTIHOP]         = TARGET_EMULTIHOP,
 229     [EBADMSG]           = TARGET_EBADMSG,
 230     [ENAMETOOLONG]      = TARGET_ENAMETOOLONG,
 231     [EOVERFLOW]         = TARGET_EOVERFLOW,
 232     [ENOTUNIQ]          = TARGET_ENOTUNIQ,
 233     [EBADFD]            = TARGET_EBADFD,
 234     [EREMCHG]           = TARGET_EREMCHG,
 235     [ELIBACC]           = TARGET_ELIBACC,
 236     [ELIBBAD]           = TARGET_ELIBBAD,
 237     [ELIBSCN]           = TARGET_ELIBSCN,
 238     [ELIBMAX]           = TARGET_ELIBMAX,
 239     [ELIBEXEC]          = TARGET_ELIBEXEC,
 240     [EILSEQ]            = TARGET_EILSEQ,
 241     [ENOSYS]            = TARGET_ENOSYS,
 242     [ELOOP]             = TARGET_ELOOP,
 243     [ERESTART]          = TARGET_ERESTART,
 244     [ESTRPIPE]          = TARGET_ESTRPIPE,
 245     [ENOTEMPTY]         = TARGET_ENOTEMPTY,
 246     [EUSERS]            = TARGET_EUSERS,
 247     [ENOTSOCK]          = TARGET_ENOTSOCK,
 248     [EDESTADDRREQ]      = TARGET_EDESTADDRREQ,
 249     [EMSGSIZE]          = TARGET_EMSGSIZE,
 250     [EPROTOTYPE]        = TARGET_EPROTOTYPE,
 251     [ENOPROTOOPT]       = TARGET_ENOPROTOOPT,
 252     [EPROTONOSUPPORT]   = TARGET_EPROTONOSUPPORT,
 253     [ESOCKTNOSUPPORT]   = TARGET_ESOCKTNOSUPPORT,
 254     [EOPNOTSUPP]        = TARGET_EOPNOTSUPP,
 255     [EPFNOSUPPORT]      = TARGET_EPFNOSUPPORT,
 256     [EAFNOSUPPORT]      = TARGET_EAFNOSUPPORT,
 257     [EADDRINUSE]        = TARGET_EADDRINUSE,
 258     [EADDRNOTAVAIL]     = TARGET_EADDRNOTAVAIL,
 259     [ENETDOWN]          = TARGET_ENETDOWN,
 260     [ENETUNREACH]       = TARGET_ENETUNREACH,
 261     [ENETRESET]         = TARGET_ENETRESET,
 262     [ECONNABORTED]      = TARGET_ECONNABORTED,
 263     [ECONNRESET]        = TARGET_ECONNRESET,
 264     [ENOBUFS]           = TARGET_ENOBUFS,
 265     [EISCONN]           = TARGET_EISCONN,
 266     [ENOTCONN]          = TARGET_ENOTCONN,
 267     [EUCLEAN]           = TARGET_EUCLEAN,
 268     [ENOTNAM]           = TARGET_ENOTNAM,
 269     [ENAVAIL]           = TARGET_ENAVAIL,
 270     [EISNAM]            = TARGET_EISNAM,
 271     [EREMOTEIO]         = TARGET_EREMOTEIO,
 272     [ESHUTDOWN]         = TARGET_ESHUTDOWN,
 273     [ETOOMANYREFS]      = TARGET_ETOOMANYREFS,
 274     [ETIMEDOUT]         = TARGET_ETIMEDOUT,
 275     [ECONNREFUSED]      = TARGET_ECONNREFUSED,
 276     [EHOSTDOWN]         = TARGET_EHOSTDOWN,
 277     [EHOSTUNREACH]      = TARGET_EHOSTUNREACH,
 278     [EALREADY]          = TARGET_EALREADY,
 279     [EINPROGRESS]       = TARGET_EINPROGRESS,
 280     [ESTALE]            = TARGET_ESTALE,
 281     [ECANCELED]         = TARGET_ECANCELED,
 282     [ENOMEDIUM]         = TARGET_ENOMEDIUM,
 283     [EMEDIUMTYPE]       = TARGET_EMEDIUMTYPE,
 284 #ifdef ENOKEY
 285     [ENOKEY]            = TARGET_ENOKEY,
 286 #endif
 287 #ifdef EKEYEXPIRED
 288     [EKEYEXPIRED]       = TARGET_EKEYEXPIRED,
 289 #endif
 290 #ifdef EKEYREVOKED
 291     [EKEYREVOKED]       = TARGET_EKEYREVOKED,
 292 #endif
 293 #ifdef EKEYREJECTED
 294     [EKEYREJECTED]      = TARGET_EKEYREJECTED,
 295 #endif
 296 #ifdef EOWNERDEAD
 297     [EOWNERDEAD]        = TARGET_EOWNERDEAD,
 298 #endif
 299 #ifdef ENOTRECOVERABLE
 300     [ENOTRECOVERABLE]   = TARGET_ENOTRECOVERABLE,
 301 #endif
 302         };
 303
 304 static inline int host_to_target_errno(int err)
 305 {
 306     if(host_to_target_errno_table[err])
 307         return host_to_target_errno_table[err];
 308     return err;
 309 }
 310
 311 static inline long get_errno(long ret)
 312 {
 313     if (ret == -1)
 314         return -host_to_target_errno(errno);
 315     else
 316         return ret;
 317 }
 318
 319 static inline int is_error(long ret)
 320 {
 321     return (unsigned long)ret >= (unsigned long)(-4096);
 322 }
 323
 324 static target_ulong target_brk;
 325 static target_ulong target_original_brk;
 326
 327 void target_set_brk(target_ulong new_brk)
 328 {
 329     target_original_brk = target_brk = HOST_PAGE_ALIGN(new_brk);
 330 }
 331
 332 long do_brk(target_ulong new_brk)
 333 {
 334     target_ulong brk_page;
 335     long mapped_addr;
 336     int new_alloc_size;
 337
 338     if (!new_brk)
 339         return target_brk;
 340     if (new_brk < target_original_brk)
 341         return -ENOMEM;
 342
 343     brk_page = HOST_PAGE_ALIGN(target_brk);
 344
 345     /* If the new brk is less than this, set it and we're done... */
 346     if (new_brk < brk_page) {
 347         target_brk = new_brk;
 348         return target_brk;
 349     }
 350
 351     /* We need to allocate more memory after the brk... */
 352     new_alloc_size = HOST_PAGE_ALIGN(new_brk - brk_page + 1);
 353     mapped_addr = get_errno(target_mmap(brk_page, new_alloc_size,
 354                                         PROT_READ|PROT_WRITE,
 355                                         MAP_ANON|MAP_FIXED|MAP_PRIVATE, 0, 0));
 356     if (is_error(mapped_addr)) {
 357         return mapped_addr;
 358     } else {
 359         target_brk = new_brk;
 360         return target_brk;
 361     }
 362 }
 363
 364 static inline fd_set *target_to_host_fds(fd_set *fds,
 365                                          target_long *target_fds, int n)
 366 {
 367 #if !defined(BSWAP_NEEDED) && !defined(WORDS_BIGENDIAN)
 368     return (fd_set *)target_fds;
 369 #else
 370     int i, b;
 371     if (target_fds) {
 372         FD_ZERO(fds);
 373         for(i = 0;i < n; i++) {
 374             b = (tswapl(target_fds[i / TARGET_LONG_BITS]) >>
 375                  (i & (TARGET_LONG_BITS - 1))) & 1;
 376             if (b)
 377                 FD_SET(i, fds);
 378         }
 379         return fds;
 380     } else {
 381         return NULL;
 382     }
 383 #endif
 384 }
 385
 386 static inline void host_to_target_fds(target_long *target_fds,
 387                                       fd_set *fds, int n)
 388 {
 389 #if !defined(BSWAP_NEEDED) && !defined(WORDS_BIGENDIAN)
 390     /* nothing to do */
 391 #else
 392     int i, nw, j, k;
 393     target_long v;
 394
 395     if (target_fds) {
 396         nw = (n + TARGET_LONG_BITS - 1) / TARGET_LONG_BITS;
 397         k = 0;
 398         for(i = 0;i < nw; i++) {
 399             v = 0;
 400             for(j = 0; j < TARGET_LONG_BITS; j++) {
 401                 v |= ((FD_ISSET(k, fds) != 0) << j);
 402                 k++;
 403             }
 404             target_fds[i] = tswapl(v);
 405         }
 406     }
 407 #endif
 408 }
 409
 410 #if defined(__alpha__)
 411 #define HOST_HZ 1024
 412 #else
 413 #define HOST_HZ 100
 414 #endif
 415
 416 static inline long host_to_target_clock_t(long ticks)
 417 {
 418 #if HOST_HZ == TARGET_HZ
 419     return ticks;
 420 #else
 421     return ((int64_t)ticks * TARGET_HZ) / HOST_HZ;
 422 #endif
 423 }
 424
 425 static inline void host_to_target_rusage(target_ulong target_addr,
 426                                          const struct rusage *rusage)
 427 {
 428     struct target_rusage *target_rusage;
 429
 430     lock_user_struct(target_rusage, target_addr, 0);
 431     target_rusage->ru_utime.tv_sec = tswapl(rusage->ru_utime.tv_sec);
 432     target_rusage->ru_utime.tv_usec = tswapl(rusage->ru_utime.tv_usec);
 433     target_rusage->ru_stime.tv_sec = tswapl(rusage->ru_stime.tv_sec);
 434     target_rusage->ru_stime.tv_usec = tswapl(rusage->ru_stime.tv_usec);
 435     target_rusage->ru_maxrss = tswapl(rusage->ru_maxrss);
 436     target_rusage->ru_ixrss = tswapl(rusage->ru_ixrss);
 437     target_rusage->ru_idrss = tswapl(rusage->ru_idrss);
 438     target_rusage->ru_isrss = tswapl(rusage->ru_isrss);
 439     target_rusage->ru_minflt = tswapl(rusage->ru_minflt);
 440     target_rusage->ru_majflt = tswapl(rusage->ru_majflt);
 441     target_rusage->ru_nswap = tswapl(rusage->ru_nswap);
 442     target_rusage->ru_inblock = tswapl(rusage->ru_inblock);
 443     target_rusage->ru_oublock = tswapl(rusage->ru_oublock);
 444     target_rusage->ru_msgsnd = tswapl(rusage->ru_msgsnd);
 445     target_rusage->ru_msgrcv = tswapl(rusage->ru_msgrcv);
 446     target_rusage->ru_nsignals = tswapl(rusage->ru_nsignals);
 447     target_rusage->ru_nvcsw = tswapl(rusage->ru_nvcsw);
 448     target_rusage->ru_nivcsw = tswapl(rusage->ru_nivcsw);
 449     unlock_user_struct(target_rusage, target_addr, 1);
 450 }
 451
 452 static inline void target_to_host_timeval(struct timeval *tv,
 453                                           target_ulong target_addr)
 454 {
 455     struct target_timeval *target_tv;
 456
 457     lock_user_struct(target_tv, target_addr, 1);
 458     tv->tv_sec = tswapl(target_tv->tv_sec);
 459     tv->tv_usec = tswapl(target_tv->tv_usec);
 460     unlock_user_struct(target_tv, target_addr, 0);
 461 }
 462
 463 static inline void host_to_target_timeval(target_ulong target_addr,
 464                                           const struct timeval *tv)
 465 {
 466     struct target_timeval *target_tv;
 467
 468     lock_user_struct(target_tv, target_addr, 0);
 469     target_tv->tv_sec = tswapl(tv->tv_sec);
 470     target_tv->tv_usec = tswapl(tv->tv_usec);
 471     unlock_user_struct(target_tv, target_addr, 1);
 472 }
 473
 474
 475 static long do_select(long n,
 476                       target_ulong rfd_p, target_ulong wfd_p,
 477                       target_ulong efd_p, target_ulong target_tv)
 478 {
 479     fd_set rfds, wfds, efds;
 480     fd_set *rfds_ptr, *wfds_ptr, *efds_ptr;
 481     target_long *target_rfds, *target_wfds, *target_efds;
 482     struct timeval tv, *tv_ptr;
 483     long ret;
 484     int ok;
 485
 486     if (rfd_p) {
 487         target_rfds = lock_user(rfd_p, sizeof(target_long) * n, 1);
 488         rfds_ptr = target_to_host_fds(&rfds, target_rfds, n);
 489     } else {
 490         target_rfds = NULL;
 491         rfds_ptr = NULL;
 492     }
 493     if (wfd_p) {
 494         target_wfds = lock_user(wfd_p, sizeof(target_long) * n, 1);
 495         wfds_ptr = target_to_host_fds(&wfds, target_wfds, n);
 496     } else {
 497         target_wfds = NULL;
 498         wfds_ptr = NULL;
 499     }
 500     if (efd_p) {
 501         target_efds = lock_user(efd_p, sizeof(target_long) * n, 1);
 502         efds_ptr = target_to_host_fds(&efds, target_efds, n);
 503     } else {
 504         target_efds = NULL;
 505         efds_ptr = NULL;
 506     }
 507
 508     if (target_tv) {
 509         target_to_host_timeval(&tv, target_tv);
 510         tv_ptr = &tv;
 511     } else {
 512         tv_ptr = NULL;
 513     }
 514     ret = get_errno(select(n, rfds_ptr, wfds_ptr, efds_ptr, tv_ptr));
 515     ok = !is_error(ret);
 516
 517     if (ok) {
 518         host_to_target_fds(target_rfds, rfds_ptr, n);
 519         host_to_target_fds(target_wfds, wfds_ptr, n);
 520         host_to_target_fds(target_efds, efds_ptr, n);
 521
 522         if (target_tv) {
 523             host_to_target_timeval(target_tv, &tv);
 524         }
 525     }
 526     if (target_rfds)
 527         unlock_user(target_rfds, rfd_p, ok ? sizeof(target_long) * n : 0);
 528     if (target_wfds)
 529         unlock_user(target_wfds, wfd_p, ok ? sizeof(target_long) * n : 0);
 530     if (target_efds)
 531         unlock_user(target_efds, efd_p, ok ? sizeof(target_long) * n : 0);
 532
 533     return ret;
 534 }
 535
 536 static inline void target_to_host_sockaddr(struct sockaddr *addr,
 537                                            target_ulong target_addr,
 538                                            socklen_t len)
 539 {
 540     struct target_sockaddr *target_saddr;
 541
 542     target_saddr = lock_user(target_addr, len, 1);
 543     memcpy(addr, target_saddr, len);
 544     addr->sa_family = tswap16(target_saddr->sa_family);
 545     unlock_user(target_saddr, target_addr, 0);
 546 }
 547
 548 static inline void host_to_target_sockaddr(target_ulong target_addr,
 549                                            struct sockaddr *addr,
 550                                            socklen_t len)
 551 {
 552     struct target_sockaddr *target_saddr;
 553
 554     target_saddr = lock_user(target_addr, len, 0);
 555     memcpy(target_saddr, addr, len);
 556     target_saddr->sa_family = tswap16(addr->sa_family);
 557     unlock_user(target_saddr, target_addr, len);
 558 }
 559
 560 /* ??? Should this also swap msgh->name?  */
 561 static inline void target_to_host_cmsg(struct msghdr *msgh,
 562                                        struct target_msghdr *target_msgh)
 563 {
 564     struct cmsghdr *cmsg = CMSG_FIRSTHDR(msgh);
 565     struct target_cmsghdr *target_cmsg = TARGET_CMSG_FIRSTHDR(target_msgh);
 566     socklen_t space = 0;
 567
 568     while (cmsg && target_cmsg) {
 569         void *data = CMSG_DATA(cmsg);
 570         void *target_data = TARGET_CMSG_DATA(target_cmsg);
 571
 572         int len = tswapl(target_cmsg->cmsg_len)
 573                   - TARGET_CMSG_ALIGN(sizeof (struct target_cmsghdr));
 574
 575         space += CMSG_SPACE(len);
 576         if (space > msgh->msg_controllen) {
 577             space -= CMSG_SPACE(len);
 578             gemu_log("Host cmsg overflow\n");
 579             break;
 580         }
 581
 582         cmsg->cmsg_level = tswap32(target_cmsg->cmsg_level);
 583         cmsg->cmsg_type = tswap32(target_cmsg->cmsg_type);
 584         cmsg->cmsg_len = CMSG_LEN(len);
 585
 586         if (cmsg->cmsg_level != TARGET_SOL_SOCKET || cmsg->cmsg_type != SCM_RIGHTS) {
 587             gemu_log("Unsupported ancillary data: %d/%d\n", cmsg->cmsg_level, cmsg->cmsg_type);
 588             memcpy(data, target_data, len);
 589         } else {
 590             int *fd = (int *)data;
 591             int *target_fd = (int *)target_data;
 592             int i, numfds = len / sizeof(int);
 593
 594             for (i = 0; i < numfds; i++)
 595                 fd[i] = tswap32(target_fd[i]);
 596         }
 597
 598         cmsg = CMSG_NXTHDR(msgh, cmsg);
 599         target_cmsg = TARGET_CMSG_NXTHDR(target_msgh, target_cmsg);
 600     }
 601
 602     msgh->msg_controllen = space;
 603 }
 604
 605 /* ??? Should this also swap msgh->name?  */
 606 static inline void host_to_target_cmsg(struct target_msghdr *target_msgh,
 607                                        struct msghdr *msgh)
 608 {
 609     struct cmsghdr *cmsg = CMSG_FIRSTHDR(msgh);
 610     struct target_cmsghdr *target_cmsg = TARGET_CMSG_FIRSTHDR(target_msgh);
 611     socklen_t space = 0;
 612
 613     while (cmsg && target_cmsg) {
 614         void *data = CMSG_DATA(cmsg);
 615         void *target_data = TARGET_CMSG_DATA(target_cmsg);
 616
 617         int len = cmsg->cmsg_len - CMSG_ALIGN(sizeof (struct cmsghdr));
 618
 619         space += TARGET_CMSG_SPACE(len);
 620         if (space > tswapl(target_msgh->msg_controllen)) {
 621             space -= TARGET_CMSG_SPACE(len);
 622             gemu_log("Target cmsg overflow\n");
 623             break;
 624         }
 625
 626         target_cmsg->cmsg_level = tswap32(cmsg->cmsg_level);
 627         target_cmsg->cmsg_type = tswap32(cmsg->cmsg_type);
 628         target_cmsg->cmsg_len = tswapl(TARGET_CMSG_LEN(len));
 629
 630         if (cmsg->cmsg_level != TARGET_SOL_SOCKET || cmsg->cmsg_type != SCM_RIGHTS) {
 631             gemu_log("Unsupported ancillary data: %d/%d\n", cmsg->cmsg_level, cmsg->cmsg_type);
 632             memcpy(target_data, data, len);
 633         } else {
 634             int *fd = (int *)data;
 635             int *target_fd = (int *)target_data;
 636             int i, numfds = len / sizeof(int);
 637
 638             for (i = 0; i < numfds; i++)
 639                 target_fd[i] = tswap32(fd[i]);
 640         }
 641
 642         cmsg = CMSG_NXTHDR(msgh, cmsg);
 643         target_cmsg = TARGET_CMSG_NXTHDR(target_msgh, target_cmsg);
 644     }
 645
 646     msgh->msg_controllen = tswapl(space);
 647 }
 648
 649 static long do_setsockopt(int sockfd, int level, int optname,
 650                           target_ulong optval, socklen_t optlen)
 651 {
 652     int val, ret;
 653
 654     switch(level) {
 655     case SOL_TCP:
 656         /* TCP options all take an 'int' value.  */
 657         if (optlen < sizeof(uint32_t))
 658             return -EINVAL;
 659
 660         val = tget32(optval);
 661         ret = get_errno(setsockopt(sockfd, level, optname, &val, sizeof(val)));
 662         break;
 663     case SOL_IP:
 664         switch(optname) {
 665         case IP_TOS:
 666         case IP_TTL:
 667         case IP_HDRINCL:
 668         case IP_ROUTER_ALERT:
 669         case IP_RECVOPTS:
 670         case IP_RETOPTS:
 671         case IP_PKTINFO:
 672         case IP_MTU_DISCOVER:
 673         case IP_RECVERR:
 674         case IP_RECVTOS:
 675 #ifdef IP_FREEBIND
 676         case IP_FREEBIND:
 677 #endif
 678         case IP_MULTICAST_TTL:
 679         case IP_MULTICAST_LOOP:
 680             val = 0;
 681             if (optlen >= sizeof(uint32_t)) {
 682                 val = tget32(optval);
 683             } else if (optlen >= 1) {
 684                 val = tget8(optval);
 685             }
 686             ret = get_errno(setsockopt(sockfd, level, optname, &val, sizeof(val)));
 687             break;
 688         default:
 689             goto unimplemented;
 690         }
 691         break;
 692     case TARGET_SOL_SOCKET:
 693         switch (optname) {
 694             /* Options with 'int' argument.  */
 695         case TARGET_SO_DEBUG:
 696                 optname = SO_DEBUG;
 697                 break;
 698         case TARGET_SO_REUSEADDR:
 699                 optname = SO_REUSEADDR;
 700                 break;
 701         case TARGET_SO_TYPE:
 702                 optname = SO_TYPE;
 703                 break;
 704         case TARGET_SO_ERROR:
 705                 optname = SO_ERROR;
 706                 break;
 707         case TARGET_SO_DONTROUTE:
 708                 optname = SO_DONTROUTE;
 709                 break;
 710         case TARGET_SO_BROADCAST:
 711                 optname = SO_BROADCAST;
 712                 break;
 713         case TARGET_SO_SNDBUF:
 714                 optname = SO_SNDBUF;
 715                 break;
 716         case TARGET_SO_RCVBUF:
 717                 optname = SO_RCVBUF;
 718                 break;
 719         case TARGET_SO_KEEPALIVE:
 720                 optname = SO_KEEPALIVE;
 721                 break;
 722         case TARGET_SO_OOBINLINE:
 723                 optname = SO_OOBINLINE;
 724                 break;
 725         case TARGET_SO_NO_CHECK:
 726                 optname = SO_NO_CHECK;
 727                 break;
 728         case TARGET_SO_PRIORITY:
 729                 optname = SO_PRIORITY;
 730                 break;
 731 #ifdef SO_BSDCOMPAT
 732         case TARGET_SO_BSDCOMPAT:
 733                 optname = SO_BSDCOMPAT;
 734                 break;
 735 #endif
 736         case TARGET_SO_PASSCRED:
 737                 optname = SO_PASSCRED;
 738                 break;
 739         case TARGET_SO_TIMESTAMP:
 740                 optname = SO_TIMESTAMP;
 741                 break;
 742         case TARGET_SO_RCVLOWAT:
 743                 optname = SO_RCVLOWAT;
 744                 break;
 745         case TARGET_SO_RCVTIMEO:
 746                 optname = SO_RCVTIMEO;
 747                 break;
 748         case TARGET_SO_SNDTIMEO:
 749                 optname = SO_SNDTIMEO;
 750                 break;
 751             break;
 752         default:
 753             goto unimplemented;
 754         }
 755         if (optlen < sizeof(uint32_t))
 756         return -EINVAL;
 757
 758         val = tget32(optval);
 759         ret = get_errno(setsockopt(sockfd, SOL_SOCKET, optname, &val, sizeof(val)));
 760         break;
 761     default:
 762     unimplemented:
 763         gemu_log("Unsupported setsockopt level=%d optname=%d \n", level, optname);
 764         ret = -ENOSYS;
 765     }
 766     return ret;
 767 }
 768
 769 static long do_getsockopt(int sockfd, int level, int optname,
 770                           target_ulong optval, target_ulong optlen)
 771 {
 772     int len, lv, val, ret;
 773
 774     switch(level) {
 775     case TARGET_SOL_SOCKET:
 776         level = SOL_SOCKET;
 777         switch (optname) {
 778         case TARGET_SO_LINGER:
 779         case TARGET_SO_RCVTIMEO:
 780         case TARGET_SO_SNDTIMEO:
 781         case TARGET_SO_PEERCRED:
 782         case TARGET_SO_PEERNAME:
 783             /* These don't just return a single integer */
 784             goto unimplemented;
 785         default:
 786             goto int_case;
 787         }
 788         break;
 789     case SOL_TCP:
 790         /* TCP options all take an 'int' value.  */
 791     int_case:
 792         len = tget32(optlen);
 793         if (len < 0)
 794             return -EINVAL;
 795         lv = sizeof(int);
 796         ret = get_errno(getsockopt(sockfd, level, optname, &val, &lv));
 797         if (ret < 0)
 798             return ret;
 799         val = tswap32(val);
 800         if (len > lv)
 801             len = lv;
 802         if (len == 4)
 803             tput32(optval, val);
 804         else
 805             tput8(optval, val);
 806         tput32(optlen, len);
 807         break;
 808     case SOL_IP:
 809         switch(optname) {
 810         case IP_TOS:
 811         case IP_TTL:
 812         case IP_HDRINCL:
 813         case IP_ROUTER_ALERT:
 814         case IP_RECVOPTS:
 815         case IP_RETOPTS:
 816         case IP_PKTINFO:
 817         case IP_MTU_DISCOVER:
 818         case IP_RECVERR:
 819         case IP_RECVTOS:
 820 #ifdef IP_FREEBIND
 821         case IP_FREEBIND:
 822 #endif
 823         case IP_MULTICAST_TTL:
 824         case IP_MULTICAST_LOOP:
 825             len = tget32(optlen);
 826             if (len < 0)
 827                 return -EINVAL;
 828             lv = sizeof(int);
 829             ret = get_errno(getsockopt(sockfd, level, optname, &val, &lv));
 830             if (ret < 0)
 831                 return ret;
 832             if (len < sizeof(int) && len > 0 && val >= 0 && val < 255) {
 833                 len = 1;
 834                 tput32(optlen, len);
 835                 tput8(optval, val);
 836             } else {
 837                 if (len > sizeof(int))
 838                     len = sizeof(int);
 839                 tput32(optlen, len);
 840                 tput32(optval, val);
 841             }
 842             break;
 843         default:
 844             goto unimplemented;
 845         }
 846         break;
 847     default:
 848     unimplemented:
 849         gemu_log("getsockopt level=%d optname=%d not yet supported\n",
 850                  level, optname);
 851         ret = -ENOSYS;
 852         break;
 853     }
 854     return ret;
 855 }
 856
 857 static void lock_iovec(struct iovec *vec, target_ulong target_addr,
 858                        int count, int copy)
 859 {
 860     struct target_iovec *target_vec;
 861     target_ulong base;
 862     int i;
 863
 864     target_vec = lock_user(target_addr, count * sizeof(struct target_iovec), 1);
 865     for(i = 0;i < count; i++) {
 866         base = tswapl(target_vec[i].iov_base);
 867         vec[i].iov_len = tswapl(target_vec[i].iov_len);
 868         vec[i].iov_base = lock_user(base, vec[i].iov_len, copy);
 869     }
 870     unlock_user (target_vec, target_addr, 0);
 871 }
 872
 873 static void unlock_iovec(struct iovec *vec, target_ulong target_addr,
 874                          int count, int copy)
 875 {
 876     struct target_iovec *target_vec;
 877     target_ulong base;
 878     int i;
 879
 880     target_vec = lock_user(target_addr, count * sizeof(struct target_iovec), 1);
 881     for(i = 0;i < count; i++) {
 882         base = tswapl(target_vec[i].iov_base);
 883         unlock_user(vec[i].iov_base, base, copy ? vec[i].iov_len : 0);
 884     }
 885     unlock_user (target_vec, target_addr, 0);
 886 }
 887
 888 static long do_socket(int domain, int type, int protocol)
 889 {
 890 #if defined(TARGET_MIPS)
 891     switch(type) {
 892     case TARGET_SOCK_DGRAM:
 893         type = SOCK_DGRAM;
 894         break;
 895     case TARGET_SOCK_STREAM:
 896         type = SOCK_STREAM;
 897         break;
 898     case TARGET_SOCK_RAW:
 899         type = SOCK_RAW;
 900         break;
 901     case TARGET_SOCK_RDM:
 902         type = SOCK_RDM;
 903         break;
 904     case TARGET_SOCK_SEQPACKET:
 905         type = SOCK_SEQPACKET;
 906         break;
 907     case TARGET_SOCK_PACKET:
 908         type = SOCK_PACKET;
 909         break;
 910     }
 911 #endif
 912     return get_errno(socket(domain, type, protocol));
 913 }
 914
 915 static long do_bind(int sockfd, target_ulong target_addr,
 916                     socklen_t addrlen)
 917 {
 918     void *addr = alloca(addrlen);
 919
 920     target_to_host_sockaddr(addr, target_addr, addrlen);
 921     return get_errno(bind(sockfd, addr, addrlen));
 922 }
 923
 924 static long do_connect(int sockfd, target_ulong target_addr,
 925                     socklen_t addrlen)
 926 {
 927     void *addr = alloca(addrlen);
 928
 929     target_to_host_sockaddr(addr, target_addr, addrlen);
 930     return get_errno(connect(sockfd, addr, addrlen));
 931 }
 932
 933 static long do_sendrecvmsg(int fd, target_ulong target_msg,
 934                            int flags, int send)
 935 {
 936     long ret;
 937     struct target_msghdr *msgp;
 938     struct msghdr msg;
 939     int count;
 940     struct iovec *vec;
 941     target_ulong target_vec;
 942
 943     lock_user_struct(msgp, target_msg, 1);
 944     if (msgp->msg_name) {
 945         msg.msg_namelen = tswap32(msgp->msg_namelen);
 946         msg.msg_name = alloca(msg.msg_namelen);
 947         target_to_host_sockaddr(msg.msg_name, tswapl(msgp->msg_name),
 948                                 msg.msg_namelen);
 949     } else {
 950         msg.msg_name = NULL;
 951         msg.msg_namelen = 0;
 952     }
 953     msg.msg_controllen = 2 * tswapl(msgp->msg_controllen);
 954     msg.msg_control = alloca(msg.msg_controllen);
 955     msg.msg_flags = tswap32(msgp->msg_flags);
 956
 957     count = tswapl(msgp->msg_iovlen);
 958     vec = alloca(count * sizeof(struct iovec));
 959     target_vec = tswapl(msgp->msg_iov);
 960     lock_iovec(vec, target_vec, count, send);
 961     msg.msg_iovlen = count;
 962     msg.msg_iov = vec;
 963
 964     if (send) {
 965         target_to_host_cmsg(&msg, msgp);
 966         ret = get_errno(sendmsg(fd, &msg, flags));
 967     } else {
 968         ret = get_errno(recvmsg(fd, &msg, flags));
 969         if (!is_error(ret))
 970             host_to_target_cmsg(msgp, &msg);
 971     }
 972     unlock_iovec(vec, target_vec, count, !send);
 973     return ret;
 974 }
 975
 976 static long do_accept(int fd, target_ulong target_addr,
 977                       target_ulong target_addrlen)
 978 {
 979     socklen_t addrlen = tget32(target_addrlen);
 980     void *addr = alloca(addrlen);
 981     long ret;
 982
 983     ret = get_errno(accept(fd, addr, &addrlen));
 984     if (!is_error(ret)) {
 985         host_to_target_sockaddr(target_addr, addr, addrlen);
 986         tput32(target_addrlen, addrlen);
 987     }
 988     return ret;
 989 }
 990
 991 static long do_getpeername(int fd, target_ulong target_addr,
 992                            target_ulong target_addrlen)
 993 {
 994     socklen_t addrlen = tget32(target_addrlen);
 995     void *addr = alloca(addrlen);
 996     long ret;
 997
 998     ret = get_errno(getpeername(fd, addr, &addrlen));
 999     if (!is_error(ret)) {
1000         host_to_target_sockaddr(target_addr, addr, addrlen);
1001         tput32(target_addrlen, addrlen);
1002     }
1003     return ret;
1004 }
1005
1006 static long do_getsockname(int fd, target_ulong target_addr,
1007                            target_ulong target_addrlen)
1008 {
1009     socklen_t addrlen = tget32(target_addrlen);
1010     void *addr = alloca(addrlen);
1011     long ret;
1012
1013     ret = get_errno(getsockname(fd, addr, &addrlen));
1014     if (!is_error(ret)) {
1015         host_to_target_sockaddr(target_addr, addr, addrlen);
1016         tput32(target_addrlen, addrlen);
1017     }
1018     return ret;
1019 }
1020
1021 static long do_socketpair(int domain, int type, int protocol,
1022                           target_ulong target_tab)
1023 {
1024     int tab[2];
1025     long ret;
1026
1027     ret = get_errno(socketpair(domain, type, protocol, tab));
1028     if (!is_error(ret)) {
1029         tput32(target_tab, tab[0]);
1030         tput32(target_tab + 4, tab[1]);
1031     }
1032     return ret;
1033 }
1034
1035 static long do_sendto(int fd, target_ulong msg, size_t len, int flags,
1036                       target_ulong target_addr, socklen_t addrlen)
1037 {
1038     void *addr;
1039     void *host_msg;
1040     long ret;
1041
1042     host_msg = lock_user(msg, len, 1);
1043     if (target_addr) {
1044         addr = alloca(addrlen);
1045         target_to_host_sockaddr(addr, target_addr, addrlen);
1046         ret = get_errno(sendto(fd, host_msg, len, flags, addr, addrlen));
1047     } else {
1048         ret = get_errno(send(fd, host_msg, len, flags));
1049     }
1050     unlock_user(host_msg, msg, 0);
1051     return ret;
1052 }
1053
1054 static long do_recvfrom(int fd, target_ulong msg, size_t len, int flags,
1055                         target_ulong target_addr, target_ulong target_addrlen)
1056 {
1057     socklen_t addrlen;
1058     void *addr;
1059     void *host_msg;
1060     long ret;
1061
1062     host_msg = lock_user(msg, len, 0);
1063     if (target_addr) {
1064         addrlen = tget32(target_addrlen);
1065         addr = alloca(addrlen);
1066         ret = get_errno(recvfrom(fd, host_msg, len, flags, addr, &addrlen));
1067     } else {
1068         addr = NULL; /* To keep compiler quiet.  */
1069         ret = get_errno(recv(fd, host_msg, len, flags));
1070     }
1071     if (!is_error(ret)) {
1072         if (target_addr) {
1073             host_to_target_sockaddr(target_addr, addr, addrlen);
1074             tput32(target_addrlen, addrlen);
1075         }
1076         unlock_user(host_msg, msg, len);
1077     } else {
1078         unlock_user(host_msg, msg, 0);
1079     }
1080     return ret;
1081 }
1082
1083 static long do_socketcall(int num, target_ulong vptr)
1084 {
1085     long ret;
1086     const int n = sizeof(target_ulong);
1087
1088     switch(num) {
1089     case SOCKOP_socket:
1090         {
1091             int domain = tgetl(vptr);
1092             int type = tgetl(vptr + n);
1093             int protocol = tgetl(vptr + 2 * n);
1094             ret = do_socket(domain, type, protocol);
1095         }
1096         break;
1097     case SOCKOP_bind:
1098         {
1099             int sockfd = tgetl(vptr);
1100             target_ulong target_addr = tgetl(vptr + n);
1101             socklen_t addrlen = tgetl(vptr + 2 * n);
1102             ret = do_bind(sockfd, target_addr, addrlen);
1103         }
1104         break;
1105     case SOCKOP_connect:
1106         {
1107             int sockfd = tgetl(vptr);
1108             target_ulong target_addr = tgetl(vptr + n);
1109             socklen_t addrlen = tgetl(vptr + 2 * n);
1110             ret = do_connect(sockfd, target_addr, addrlen);
1111         }
1112         break;
1113     case SOCKOP_listen:
1114         {
1115             int sockfd = tgetl(vptr);
1116             int backlog = tgetl(vptr + n);
1117             ret = get_errno(listen(sockfd, backlog));
1118         }
1119         break;
1120     case SOCKOP_accept:
1121         {
1122             int sockfd = tgetl(vptr);
1123             target_ulong target_addr = tgetl(vptr + n);
1124             target_ulong target_addrlen = tgetl(vptr + 2 * n);
1125             ret = do_accept(sockfd, target_addr, target_addrlen);
1126         }
1127         break;
1128     case SOCKOP_getsockname:
1129         {
1130             int sockfd = tgetl(vptr);
1131             target_ulong target_addr = tgetl(vptr + n);
1132             target_ulong target_addrlen = tgetl(vptr + 2 * n);
1133             ret = do_getsockname(sockfd, target_addr, target_addrlen);
1134         }
1135         break;
1136     case SOCKOP_getpeername:
1137         {
1138             int sockfd = tgetl(vptr);
1139             target_ulong target_addr = tgetl(vptr + n);
1140             target_ulong target_addrlen = tgetl(vptr + 2 * n);
1141             ret = do_getpeername(sockfd, target_addr, target_addrlen);
1142         }
1143         break;
1144     case SOCKOP_socketpair:
1145         {
1146             int domain = tgetl(vptr);
1147             int type = tgetl(vptr + n);
1148             int protocol = tgetl(vptr + 2 * n);
1149             target_ulong tab = tgetl(vptr + 3 * n);
1150             ret = do_socketpair(domain, type, protocol, tab);
1151         }
1152         break;
1153     case SOCKOP_send:
1154         {
1155             int sockfd = tgetl(vptr);
1156             target_ulong msg = tgetl(vptr + n);
1157             size_t len = tgetl(vptr + 2 * n);
1158             int flags = tgetl(vptr + 3 * n);
1159             ret = do_sendto(sockfd, msg, len, flags, 0, 0);
1160         }
1161         break;
1162     case SOCKOP_recv:
1163         {
1164             int sockfd = tgetl(vptr);
1165             target_ulong msg = tgetl(vptr + n);
1166             size_t len = tgetl(vptr + 2 * n);
1167             int flags = tgetl(vptr + 3 * n);
1168             ret = do_recvfrom(sockfd, msg, len, flags, 0, 0);
1169         }
1170         break;
1171     case SOCKOP_sendto:
1172         {
1173             int sockfd = tgetl(vptr);
1174             target_ulong msg = tgetl(vptr + n);
1175             size_t len = tgetl(vptr + 2 * n);
1176             int flags = tgetl(vptr + 3 * n);
1177             target_ulong addr = tgetl(vptr + 4 * n);
1178             socklen_t addrlen = tgetl(vptr + 5 * n);
1179             ret = do_sendto(sockfd, msg, len, flags, addr, addrlen);
1180         }
1181         break;
1182     case SOCKOP_recvfrom:
1183         {
1184             int sockfd = tgetl(vptr);
1185             target_ulong msg = tgetl(vptr + n);
1186             size_t len = tgetl(vptr + 2 * n);
1187             int flags = tgetl(vptr + 3 * n);
1188             target_ulong addr = tgetl(vptr + 4 * n);
1189             target_ulong addrlen = tgetl(vptr + 5 * n);
1190             ret = do_recvfrom(sockfd, msg, len, flags, addr, addrlen);
1191         }
1192         break;
1193     case SOCKOP_shutdown:
1194         {
1195             int sockfd = tgetl(vptr);
1196             int how = tgetl(vptr + n);
1197
1198             ret = get_errno(shutdown(sockfd, how));
1199         }
1200         break;
1201     case SOCKOP_sendmsg:
1202     case SOCKOP_recvmsg:
1203         {
1204             int fd;
1205             target_ulong target_msg;
1206             int flags;
1207
1208             fd = tgetl(vptr);
1209             target_msg = tgetl(vptr + n);
1210             flags = tgetl(vptr + 2 * n);
1211
1212             ret = do_sendrecvmsg(fd, target_msg, flags,
1213                                  (num == SOCKOP_sendmsg));
1214         }
1215         break;
1216     case SOCKOP_setsockopt:
1217         {
1218             int sockfd = tgetl(vptr);
1219             int level = tgetl(vptr + n);
1220             int optname = tgetl(vptr + 2 * n);
1221             target_ulong optval = tgetl(vptr + 3 * n);
1222             socklen_t optlen = tgetl(vptr + 4 * n);
1223
1224             ret = do_setsockopt(sockfd, level, optname, optval, optlen);
1225         }
1226         break;
1227     case SOCKOP_getsockopt:
1228         {
1229             int sockfd = tgetl(vptr);
1230             int level = tgetl(vptr + n);
1231             int optname = tgetl(vptr + 2 * n);
1232             target_ulong optval = tgetl(vptr + 3 * n);
1233             target_ulong poptlen = tgetl(vptr + 4 * n);
1234
1235             ret = do_getsockopt(sockfd, level, optname, optval, poptlen);
1236         }
1237         break;
1238     default:
1239         gemu_log("Unsupported socketcall: %d\n", num);
1240         ret = -ENOSYS;
1241         break;
1242     }
1243     return ret;
1244 }
1245
1246 #define N_SHM_REGIONS   32
1247
1248 static struct shm_region {
1249     uint32_t    start;
1250     uint32_t    size;
1251 } shm_regions[N_SHM_REGIONS];
1252
1253 struct target_ipc_perm
1254 {
1255     target_long __key;
1256     target_ulong uid;
1257     target_ulong gid;
1258     target_ulong cuid;
1259     target_ulong cgid;
1260     unsigned short int mode;
1261     unsigned short int __pad1;
1262     unsigned short int __seq;
1263     unsigned short int __pad2;
1264     target_ulong __unused1;
1265     target_ulong __unused2;
1266 };
1267
1268 struct target_semid_ds
1269 {
1270   struct target_ipc_perm sem_perm;
1271   target_ulong sem_otime;
1272   target_ulong __unused1;
1273   target_ulong sem_ctime;
1274   target_ulong __unused2;
1275   target_ulong sem_nsems;
1276   target_ulong __unused3;
1277   target_ulong __unused4;
1278 };
1279
1280 static inline void target_to_host_ipc_perm(struct ipc_perm *host_ip,
1281                                            target_ulong target_addr)
1282 {
1283     struct target_ipc_perm *target_ip;
1284     struct target_semid_ds *target_sd;
1285
1286     lock_user_struct(target_sd, target_addr, 1);
1287     target_ip=&(target_sd->sem_perm);
1288     host_ip->__key = tswapl(target_ip->__key);
1289     host_ip->uid = tswapl(target_ip->uid);
1290     host_ip->gid = tswapl(target_ip->gid);
1291     host_ip->cuid = tswapl(target_ip->cuid);
1292     host_ip->cgid = tswapl(target_ip->cgid);
1293     host_ip->mode = tswapl(target_ip->mode);
1294     unlock_user_struct(target_sd, target_addr, 0);
1295 }
1296
1297 static inline void host_to_target_ipc_perm(target_ulong target_addr,
1298                                            struct ipc_perm *host_ip)
1299 {
1300     struct target_ipc_perm *target_ip;
1301     struct target_semid_ds *target_sd;
1302
1303     lock_user_struct(target_sd, target_addr, 0);
1304     target_ip = &(target_sd->sem_perm);
1305     target_ip->__key = tswapl(host_ip->__key);
1306     target_ip->uid = tswapl(host_ip->uid);
1307     target_ip->gid = tswapl(host_ip->gid);
1308     target_ip->cuid = tswapl(host_ip->cuid);
1309     target_ip->cgid = tswapl(host_ip->cgid);
1310     target_ip->mode = tswapl(host_ip->mode);
1311     unlock_user_struct(target_sd, target_addr, 1);
1312 }
1313
1314 static inline void target_to_host_semid_ds(struct semid_ds *host_sd,
1315                                           target_ulong target_addr)
1316 {
1317     struct target_semid_ds *target_sd;
1318
1319     lock_user_struct(target_sd, target_addr, 1);
1320     target_to_host_ipc_perm(&(host_sd->sem_perm),target_addr);
1321     host_sd->sem_nsems = tswapl(target_sd->sem_nsems);
1322     host_sd->sem_otime = tswapl(target_sd->sem_otime);
1323     host_sd->sem_ctime = tswapl(target_sd->sem_ctime);
1324     unlock_user_struct(target_sd, target_addr, 0);
1325 }
1326
1327 static inline void host_to_target_semid_ds(target_ulong target_addr,
1328                                            struct semid_ds *host_sd)
1329 {
1330     struct target_semid_ds *target_sd;
1331
1332     lock_user_struct(target_sd, target_addr, 0);
1333     host_to_target_ipc_perm(target_addr,&(host_sd->sem_perm));
1334     target_sd->sem_nsems = tswapl(host_sd->sem_nsems);
1335     target_sd->sem_otime = tswapl(host_sd->sem_otime);
1336     target_sd->sem_ctime = tswapl(host_sd->sem_ctime);
1337     unlock_user_struct(target_sd, target_addr, 1);
1338 }
1339
1340 union semun {
1341         int val;
1342         struct semid_ds *buf;
1343         unsigned short *array;
1344 };
1345
1346 union target_semun {
1347         int val;
1348         target_long buf;
1349         unsigned short int *array;
1350 };
1351
1352 static inline void target_to_host_semun(unsigned long cmd,
1353                                         union semun *host_su,
1354                                         target_ulong target_addr,
1355                                         struct semid_ds *ds)
1356 {
1357     union target_semun *target_su;
1358
1359     switch( cmd ) {
1360         case IPC_STAT:
1361         case IPC_SET:
1362            lock_user_struct(target_su, target_addr, 1);
1363            target_to_host_semid_ds(ds,target_su->buf);
1364            host_su->buf = ds;
1365            unlock_user_struct(target_su, target_addr, 0);
1366            break;
1367         case GETVAL:
1368         case SETVAL:
1369            lock_user_struct(target_su, target_addr, 1);
1370            host_su->val = tswapl(target_su->val);
1371            unlock_user_struct(target_su, target_addr, 0);
1372            break;
1373         case GETALL:
1374         case SETALL:
1375            lock_user_struct(target_su, target_addr, 1);
1376            *host_su->array = tswap16(*target_su->array);
1377            unlock_user_struct(target_su, target_addr, 0);
1378            break;
1379         default:
1380            gemu_log("semun operation not fully supported: %d\n", (int)cmd);
1381     }
1382 }
1383
1384 static inline void host_to_target_semun(unsigned long cmd,
1385                                         target_ulong target_addr,
1386                                         union semun *host_su,
1387                                         struct semid_ds *ds)
1388 {
1389     union target_semun *target_su;
1390
1391     switch( cmd ) {
1392         case IPC_STAT:
1393         case IPC_SET:
1394            lock_user_struct(target_su, target_addr, 0);
1395            host_to_target_semid_ds(target_su->buf,ds);
1396            unlock_user_struct(target_su, target_addr, 1);
1397            break;
1398         case GETVAL:
1399         case SETVAL:
1400            lock_user_struct(target_su, target_addr, 0);
1401            target_su->val = tswapl(host_su->val);
1402            unlock_user_struct(target_su, target_addr, 1);
1403            break;
1404         case GETALL:
1405         case SETALL:
1406            lock_user_struct(target_su, target_addr, 0);
1407            *target_su->array = tswap16(*host_su->array);
1408            unlock_user_struct(target_su, target_addr, 1);
1409            break;
1410         default:
1411            gemu_log("semun operation not fully supported: %d\n", (int)cmd);
1412     }
1413 }
1414
1415 static inline long do_semctl(long first, long second, long third, long ptr)
1416 {
1417     union semun arg;
1418     struct semid_ds dsarg;
1419     int cmd = third&0xff;
1420     long ret = 0;
1421
1422     switch( cmd ) {
1423         case GETVAL:
1424             target_to_host_semun(cmd,&arg,ptr,&dsarg);
1425             ret = get_errno(semctl(first, second, cmd, arg));
1426             host_to_target_semun(cmd,ptr,&arg,&dsarg);
1427             break;
1428         case SETVAL:
1429             target_to_host_semun(cmd,&arg,ptr,&dsarg);
1430             ret = get_errno(semctl(first, second, cmd, arg));
1431             host_to_target_semun(cmd,ptr,&arg,&dsarg);
1432             break;
1433         case GETALL:
1434             target_to_host_semun(cmd,&arg,ptr,&dsarg);
1435             ret = get_errno(semctl(first, second, cmd, arg));
1436             host_to_target_semun(cmd,ptr,&arg,&dsarg);
1437             break;
1438         case SETALL:
1439             target_to_host_semun(cmd,&arg,ptr,&dsarg);
1440             ret = get_errno(semctl(first, second, cmd, arg));
1441             host_to_target_semun(cmd,ptr,&arg,&dsarg);
1442             break;
1443         case IPC_STAT:
1444             target_to_host_semun(cmd,&arg,ptr,&dsarg);
1445             ret = get_errno(semctl(first, second, cmd, arg));
1446             host_to_target_semun(cmd,ptr,&arg,&dsarg);
1447             break;
1448         case IPC_SET:
1449             target_to_host_semun(cmd,&arg,ptr,&dsarg);
1450             ret = get_errno(semctl(first, second, cmd, arg));
1451             host_to_target_semun(cmd,ptr,&arg,&dsarg);
1452             break;
1453     default:
1454             ret = get_errno(semctl(first, second, cmd, arg));
1455     }
1456
1457     return ret;
1458 }
1459
1460 struct target_msqid_ds
1461 {
1462   struct target_ipc_perm msg_perm;
1463   target_ulong msg_stime;
1464   target_ulong __unused1;
1465   target_ulong msg_rtime;
1466   target_ulong __unused2;
1467   target_ulong msg_ctime;
1468   target_ulong __unused3;
1469   target_ulong __msg_cbytes;
1470   target_ulong msg_qnum;
1471   target_ulong msg_qbytes;
1472   target_ulong msg_lspid;
1473   target_ulong msg_lrpid;
1474   target_ulong __unused4;
1475   target_ulong __unused5;
1476 };
1477
1478 static inline void target_to_host_msqid_ds(struct msqid_ds *host_md,
1479                                           target_ulong target_addr)
1480 {
1481     struct target_msqid_ds *target_md;
1482
1483     lock_user_struct(target_md, target_addr, 1);
1484     target_to_host_ipc_perm(&(host_md->msg_perm),target_addr);
1485     host_md->msg_stime = tswapl(target_md->msg_stime);
1486     host_md->msg_rtime = tswapl(target_md->msg_rtime);
1487     host_md->msg_ctime = tswapl(target_md->msg_ctime);
1488     host_md->__msg_cbytes = tswapl(target_md->__msg_cbytes);
1489     host_md->msg_qnum = tswapl(target_md->msg_qnum);
1490     host_md->msg_qbytes = tswapl(target_md->msg_qbytes);
1491     host_md->msg_lspid = tswapl(target_md->msg_lspid);
1492     host_md->msg_lrpid = tswapl(target_md->msg_lrpid);
1493     unlock_user_struct(target_md, target_addr, 0);
1494 }
1495
1496 static inline void host_to_target_msqid_ds(target_ulong target_addr,
1497                                            struct msqid_ds *host_md)
1498 {
1499     struct target_msqid_ds *target_md;
1500
1501     lock_user_struct(target_md, target_addr, 0);
1502     host_to_target_ipc_perm(target_addr,&(host_md->msg_perm));
1503     target_md->msg_stime = tswapl(host_md->msg_stime);
1504     target_md->msg_rtime = tswapl(host_md->msg_rtime);
1505     target_md->msg_ctime = tswapl(host_md->msg_ctime);
1506     target_md->__msg_cbytes = tswapl(host_md->__msg_cbytes);
1507     target_md->msg_qnum = tswapl(host_md->msg_qnum);
1508     target_md->msg_qbytes = tswapl(host_md->msg_qbytes);
1509     target_md->msg_lspid = tswapl(host_md->msg_lspid);
1510     target_md->msg_lrpid = tswapl(host_md->msg_lrpid);
1511     unlock_user_struct(target_md, target_addr, 1);
1512 }
1513
1514 static inline long do_msgctl(long first, long second, long ptr)
1515 {
1516     struct msqid_ds dsarg;
1517     int cmd = second&0xff;
1518     long ret = 0;
1519     switch( cmd ) {
1520     case IPC_STAT:
1521     case IPC_SET:
1522         target_to_host_msqid_ds(&dsarg,ptr);
1523         ret = get_errno(msgctl(first, cmd, &dsarg));
1524         host_to_target_msqid_ds(ptr,&dsarg);
1525     default:
1526         ret = get_errno(msgctl(first, cmd, &dsarg));
1527     }
1528     return ret;
1529 }
1530
1531 struct target_msgbuf {
1532         target_ulong mtype;
1533         char    mtext[1];
1534 };
1535
1536 static inline long do_msgsnd(long msqid, long msgp, long msgsz, long msgflg)
1537 {
1538     struct target_msgbuf *target_mb;
1539     struct msgbuf *host_mb;
1540     long ret = 0;
1541
1542     lock_user_struct(target_mb,msgp,0);
1543     host_mb = malloc(msgsz+sizeof(long));
1544     host_mb->mtype = tswapl(target_mb->mtype);
1545     memcpy(host_mb->mtext,target_mb->mtext,msgsz);
1546     ret = get_errno(msgsnd(msqid, host_mb, msgsz, msgflg));
1547     free(host_mb);
1548     unlock_user_struct(target_mb, msgp, 0);
1549
1550     return ret;
1551 }
1552
1553 static inline long do_msgrcv(long msqid, long msgp, long msgsz, long msgtype, long msgflg)
1554 {
1555     struct target_msgbuf *target_mb;
1556     struct msgbuf *host_mb;
1557     long ret = 0;
1558
1559     lock_user_struct(target_mb, msgp, 0);
1560     host_mb = malloc(msgsz+sizeof(long));
1561     ret = get_errno(msgrcv(msqid, host_mb, msgsz, 1, msgflg));
1562     if (ret > 0)
1563         memcpy(target_mb->mtext, host_mb->mtext, ret);
1564     target_mb->mtype = tswapl(host_mb->mtype);
1565     free(host_mb);
1566     unlock_user_struct(target_mb, msgp, 0);
1567
1568     return ret;
1569 }
1570
1571 /* ??? This only works with linear mappings.  */
1572 static long do_ipc(long call, long first, long second, long third,
1573                    long ptr, long fifth)
1574 {
1575     int version;
1576     long ret = 0;
1577     unsigned long raddr;
1578     struct shmid_ds shm_info;
1579     int i;
1580
1581     version = call >> 16;
1582     call &= 0xffff;
1583
1584     switch (call) {
1585     case IPCOP_semop:
1586         ret = get_errno(semop(first,(struct sembuf *) ptr, second));
1587         break;
1588
1589     case IPCOP_semget:
1590         ret = get_errno(semget(first, second, third));
1591         break;
1592
1593     case IPCOP_semctl:
1594         ret = do_semctl(first, second, third, ptr);
1595         break;
1596
1597     case IPCOP_semtimedop:
1598         gemu_log("Unsupported ipc call: %ld (version %d)\n", call, version);
1599         ret = -ENOSYS;
1600         break;
1601
1602         case IPCOP_msgget:
1603                 ret = get_errno(msgget(first, second));
1604                 break;
1605
1606         case IPCOP_msgsnd:
1607                 ret = do_msgsnd(first, ptr, second, third);
1608                 break;
1609
1610         case IPCOP_msgctl:
1611                 ret = do_msgctl(first, second, ptr);
1612                 break;
1613
1614         case IPCOP_msgrcv:
1615                 {
1616                       struct ipc_kludge
1617                       {
1618                               void *__unbounded msgp;
1619                               long int msgtyp;
1620                       };
1621
1622                       struct ipc_kludge *foo = (struct ipc_kludge *) ptr;
1623                       struct msgbuf *msgp = (struct msgbuf *) foo->msgp;
1624
1625                       ret = do_msgrcv(first, (long)msgp, second, 0, third);
1626
1627                 }
1628                 break;
1629
1630     case IPCOP_shmat:
1631         /* SHM_* flags are the same on all linux platforms */
1632         ret = get_errno((long) shmat(first, (void *) ptr, second));
1633         if (is_error(ret))
1634             break;
1635         raddr = ret;
1636         /* find out the length of the shared memory segment */
1637
1638         ret = get_errno(shmctl(first, IPC_STAT, &shm_info));
1639         if (is_error(ret)) {
1640             /* can't get length, bail out */
1641             shmdt((void *) raddr);
1642             break;
1643         }
1644         page_set_flags(raddr, raddr + shm_info.shm_segsz,
1645                        PAGE_VALID | PAGE_READ |
1646                        ((second & SHM_RDONLY)? 0: PAGE_WRITE));
1647         for (i = 0; i < N_SHM_REGIONS; ++i) {
1648             if (shm_regions[i].start == 0) {
1649                 shm_regions[i].start = raddr;
1650                 shm_regions[i].size = shm_info.shm_segsz;
1651                 break;
1652             }
1653         }
1654         if (put_user(raddr, (uint32_t *)third))
1655             return -EFAULT;
1656         ret = 0;
1657         break;
1658     case IPCOP_shmdt:
1659         for (i = 0; i < N_SHM_REGIONS; ++i) {
1660             if (shm_regions[i].start == ptr) {
1661                 shm_regions[i].start = 0;
1662                 page_set_flags(ptr, shm_regions[i].size, 0);
1663                 break;
1664             }
1665         }
1666         ret = get_errno(shmdt((void *) ptr));
1667         break;
1668
1669     case IPCOP_shmget:
1670         /* IPC_* flag values are the same on all linux platforms */
1671         ret = get_errno(shmget(first, second, third));
1672         break;
1673
1674         /* IPC_* and SHM_* command values are the same on all linux platforms */
1675     case IPCOP_shmctl:
1676         switch(second) {
1677         case IPC_RMID:
1678         case SHM_LOCK:
1679         case SHM_UNLOCK:
1680             ret = get_errno(shmctl(first, second, NULL));
1681             break;
1682         default:
1683             goto unimplemented;
1684         }
1685         break;
1686     default:
1687     unimplemented:
1688         gemu_log("Unsupported ipc call: %ld (version %d)\n", call, version);
1689         ret = -ENOSYS;
1690         break;
1691     }
1692     return ret;
1693 }
1694
1695 /* kernel structure types definitions */
1696 #define IFNAMSIZ        16
1697
1698 #define STRUCT(name, list...) STRUCT_ ## name,
1699 #define STRUCT_SPECIAL(name) STRUCT_ ## name,
1700 enum {
1701 #include "syscall_types.h"
1702 };
1703 #undef STRUCT
1704 #undef STRUCT_SPECIAL
1705
1706 #define STRUCT(name, list...) const argtype struct_ ## name ## _def[] = { list, TYPE_NULL };
1707 #define STRUCT_SPECIAL(name)
1708 #include "syscall_types.h"
1709 #undef STRUCT
1710 #undef STRUCT_SPECIAL
1711
1712 typedef struct IOCTLEntry {
1713     unsigned int target_cmd;
1714     unsigned int host_cmd;
1715     const char *name;
1716     int access;
1717     const argtype arg_type[5];
1718 } IOCTLEntry;
1719
1720 #define IOC_R 0x0001
1721 #define IOC_W 0x0002
1722 #define IOC_RW (IOC_R | IOC_W)
1723
1724 #define MAX_STRUCT_SIZE 4096
1725
1726 IOCTLEntry ioctl_entries[] = {
1727 #define IOCTL(cmd, access, types...) \
1728     { TARGET_ ## cmd, cmd, #cmd, access, { types } },
1729 #include "ioctls.h"
1730     { 0, 0, },
1731 };
1732
1733 /* ??? Implement proper locking for ioctls.  */
1734 static long do_ioctl(long fd, long cmd, long arg)
1735 {
1736     const IOCTLEntry *ie;
1737     const argtype *arg_type;
1738     long ret;
1739     uint8_t buf_temp[MAX_STRUCT_SIZE];
1740     int target_size;
1741     void *argptr;
1742
1743     ie = ioctl_entries;
1744     for(;;) {
1745         if (ie->target_cmd == 0) {
1746             gemu_log("Unsupported ioctl: cmd=0x%04lx\n", cmd);
1747             return -ENOSYS;
1748         }
1749         if (ie->target_cmd == cmd)
1750             break;
1751         ie++;
1752     }
1753     arg_type = ie->arg_type;
1754 #if defined(DEBUG)
1755     gemu_log("ioctl: cmd=0x%04lx (%s)\n", cmd, ie->name);
1756 #endif
1757     switch(arg_type[0]) {
1758     case TYPE_NULL:
1759         /* no argument */
1760         ret = get_errno(ioctl(fd, ie->host_cmd));
1761         break;
1762     case TYPE_PTRVOID:
1763     case TYPE_INT:
1764         /* int argment */
1765         ret = get_errno(ioctl(fd, ie->host_cmd, arg));
1766         break;
1767     case TYPE_PTR:
1768         arg_type++;
1769         target_size = thunk_type_size(arg_type, 0);
1770         switch(ie->access) {
1771         case IOC_R:
1772             ret = get_errno(ioctl(fd, ie->host_cmd, buf_temp));
1773             if (!is_error(ret)) {
1774                 argptr = lock_user(arg, target_size, 0);
1775                 thunk_convert(argptr, buf_temp, arg_type, THUNK_TARGET);
1776                 unlock_user(argptr, arg, target_size);
1777             }
1778             break;
1779         case IOC_W:
1780             argptr = lock_user(arg, target_size, 1);
1781             thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST);
1782             unlock_user(argptr, arg, 0);
1783             ret = get_errno(ioctl(fd, ie->host_cmd, buf_temp));
1784             break;
1785         default:
1786         case IOC_RW:
1787             argptr = lock_user(arg, target_size, 1);
1788             thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST);
1789             unlock_user(argptr, arg, 0);
1790             ret = get_errno(ioctl(fd, ie->host_cmd, buf_temp));
1791             if (!is_error(ret)) {
1792                 argptr = lock_user(arg, target_size, 0);
1793                 thunk_convert(argptr, buf_temp, arg_type, THUNK_TARGET);
1794                 unlock_user(argptr, arg, target_size);
1795             }
1796             break;
1797         }
1798         break;
1799     default:
1800         gemu_log("Unsupported ioctl type: cmd=0x%04lx type=%d\n", cmd, arg_type[0]);
1801         ret = -ENOSYS;
1802         break;
1803     }
1804     return ret;
1805 }
1806
1807 bitmask_transtbl iflag_tbl[] = {
1808         { TARGET_IGNBRK, TARGET_IGNBRK, IGNBRK, IGNBRK },
1809         { TARGET_BRKINT, TARGET_BRKINT, BRKINT, BRKINT },
1810         { TARGET_IGNPAR, TARGET_IGNPAR, IGNPAR, IGNPAR },
1811         { TARGET_PARMRK, TARGET_PARMRK, PARMRK, PARMRK },
1812         { TARGET_INPCK, TARGET_INPCK, INPCK, INPCK },
1813         { TARGET_ISTRIP, TARGET_ISTRIP, ISTRIP, ISTRIP },
1814         { TARGET_INLCR, TARGET_INLCR, INLCR, INLCR },
1815         { TARGET_IGNCR, TARGET_IGNCR, IGNCR, IGNCR },
1816         { TARGET_ICRNL, TARGET_ICRNL, ICRNL, ICRNL },
1817         { TARGET_IUCLC, TARGET_IUCLC, IUCLC, IUCLC },
1818         { TARGET_IXON, TARGET_IXON, IXON, IXON },
1819         { TARGET_IXANY, TARGET_IXANY, IXANY, IXANY },
1820         { TARGET_IXOFF, TARGET_IXOFF, IXOFF, IXOFF },
1821         { TARGET_IMAXBEL, TARGET_IMAXBEL, IMAXBEL, IMAXBEL },
1822         { 0, 0, 0, 0 }
1823 };
1824
1825 bitmask_transtbl oflag_tbl[] = {
1826         { TARGET_OPOST, TARGET_OPOST, OPOST, OPOST },
1827         { TARGET_OLCUC, TARGET_OLCUC, OLCUC, OLCUC },
1828         { TARGET_ONLCR, TARGET_ONLCR, ONLCR, ONLCR },
1829         { TARGET_OCRNL, TARGET_OCRNL, OCRNL, OCRNL },
1830         { TARGET_ONOCR, TARGET_ONOCR, ONOCR, ONOCR },
1831         { TARGET_ONLRET, TARGET_ONLRET, ONLRET, ONLRET },
1832         { TARGET_OFILL, TARGET_OFILL, OFILL, OFILL },
1833         { TARGET_OFDEL, TARGET_OFDEL, OFDEL, OFDEL },
1834         { TARGET_NLDLY, TARGET_NL0, NLDLY, NL0 },
1835         { TARGET_NLDLY, TARGET_NL1, NLDLY, NL1 },
1836         { TARGET_CRDLY, TARGET_CR0, CRDLY, CR0 },
1837         { TARGET_CRDLY, TARGET_CR1, CRDLY, CR1 },
1838         { TARGET_CRDLY, TARGET_CR2, CRDLY, CR2 },
1839         { TARGET_CRDLY, TARGET_CR3, CRDLY, CR3 },
1840         { TARGET_TABDLY, TARGET_TAB0, TABDLY, TAB0 },
1841         { TARGET_TABDLY, TARGET_TAB1, TABDLY, TAB1 },
1842         { TARGET_TABDLY, TARGET_TAB2, TABDLY, TAB2 },
1843         { TARGET_TABDLY, TARGET_TAB3, TABDLY, TAB3 },
1844         { TARGET_BSDLY, TARGET_BS0, BSDLY, BS0 },
1845         { TARGET_BSDLY, TARGET_BS1, BSDLY, BS1 },
1846         { TARGET_VTDLY, TARGET_VT0, VTDLY, VT0 },
1847         { TARGET_VTDLY, TARGET_VT1, VTDLY, VT1 },
1848         { TARGET_FFDLY, TARGET_FF0, FFDLY, FF0 },
1849         { TARGET_FFDLY, TARGET_FF1, FFDLY, FF1 },
1850         { 0, 0, 0, 0 }
1851 };
1852
1853 bitmask_transtbl cflag_tbl[] = {
1854         { TARGET_CBAUD, TARGET_B0, CBAUD, B0 },
1855         { TARGET_CBAUD, TARGET_B50, CBAUD, B50 },
1856         { TARGET_CBAUD, TARGET_B75, CBAUD, B75 },
1857         { TARGET_CBAUD, TARGET_B110, CBAUD, B110 },
1858         { TARGET_CBAUD, TARGET_B134, CBAUD, B134 },
1859         { TARGET_CBAUD, TARGET_B150, CBAUD, B150 },
1860         { TARGET_CBAUD, TARGET_B200, CBAUD, B200 },
1861         { TARGET_CBAUD, TARGET_B300, CBAUD, B300 },
1862         { TARGET_CBAUD, TARGET_B600, CBAUD, B600 },
1863         { TARGET_CBAUD, TARGET_B1200, CBAUD, B1200 },
1864         { TARGET_CBAUD, TARGET_B1800, CBAUD, B1800 },
1865         { TARGET_CBAUD, TARGET_B2400, CBAUD, B2400 },
1866         { TARGET_CBAUD, TARGET_B4800, CBAUD, B4800 },
1867         { TARGET_CBAUD, TARGET_B9600, CBAUD, B9600 },
1868         { TARGET_CBAUD, TARGET_B19200, CBAUD, B19200 },
1869         { TARGET_CBAUD, TARGET_B38400, CBAUD, B38400 },
1870         { TARGET_CBAUD, TARGET_B57600, CBAUD, B57600 },
1871         { TARGET_CBAUD, TARGET_B115200, CBAUD, B115200 },
1872         { TARGET_CBAUD, TARGET_B230400, CBAUD, B230400 },
1873         { TARGET_CBAUD, TARGET_B460800, CBAUD, B460800 },
1874         { TARGET_CSIZE, TARGET_CS5, CSIZE, CS5 },
1875         { TARGET_CSIZE, TARGET_CS6, CSIZE, CS6 },
1876         { TARGET_CSIZE, TARGET_CS7, CSIZE, CS7 },
1877         { TARGET_CSIZE, TARGET_CS8, CSIZE, CS8 },
1878         { TARGET_CSTOPB, TARGET_CSTOPB, CSTOPB, CSTOPB },
1879         { TARGET_CREAD, TARGET_CREAD, CREAD, CREAD },
1880         { TARGET_PARENB, TARGET_PARENB, PARENB, PARENB },
1881         { TARGET_PARODD, TARGET_PARODD, PARODD, PARODD },
1882         { TARGET_HUPCL, TARGET_HUPCL, HUPCL, HUPCL },
1883         { TARGET_CLOCAL, TARGET_CLOCAL, CLOCAL, CLOCAL },
1884         { TARGET_CRTSCTS, TARGET_CRTSCTS, CRTSCTS, CRTSCTS },
1885         { 0, 0, 0, 0 }
1886 };
1887
1888 bitmask_transtbl lflag_tbl[] = {
1889         { TARGET_ISIG, TARGET_ISIG, ISIG, ISIG },
1890         { TARGET_ICANON, TARGET_ICANON, ICANON, ICANON },
1891         { TARGET_XCASE, TARGET_XCASE, XCASE, XCASE },
1892         { TARGET_ECHO, TARGET_ECHO, ECHO, ECHO },
1893         { TARGET_ECHOE, TARGET_ECHOE, ECHOE, ECHOE },
1894         { TARGET_ECHOK, TARGET_ECHOK, ECHOK, ECHOK },
1895         { TARGET_ECHONL, TARGET_ECHONL, ECHONL, ECHONL },
1896         { TARGET_NOFLSH, TARGET_NOFLSH, NOFLSH, NOFLSH },
1897         { TARGET_TOSTOP, TARGET_TOSTOP, TOSTOP, TOSTOP },
1898         { TARGET_ECHOCTL, TARGET_ECHOCTL, ECHOCTL, ECHOCTL },
1899         { TARGET_ECHOPRT, TARGET_ECHOPRT, ECHOPRT, ECHOPRT },
1900         { TARGET_ECHOKE, TARGET_ECHOKE, ECHOKE, ECHOKE },
1901         { TARGET_FLUSHO, TARGET_FLUSHO, FLUSHO, FLUSHO },
1902         { TARGET_PENDIN, TARGET_PENDIN, PENDIN, PENDIN },
1903         { TARGET_IEXTEN, TARGET_IEXTEN, IEXTEN, IEXTEN },
1904         { 0, 0, 0, 0 }
1905 };
1906
1907 static void target_to_host_termios (void *dst, const void *src)
1908 {
1909     struct host_termios *host = dst;
1910     const struct target_termios *target = src;
1911
1912     host->c_iflag =
1913         target_to_host_bitmask(tswap32(target->c_iflag), iflag_tbl);
1914     host->c_oflag =
1915         target_to_host_bitmask(tswap32(target->c_oflag), oflag_tbl);
1916     host->c_cflag =
1917         target_to_host_bitmask(tswap32(target->c_cflag), cflag_tbl);
1918     host->c_lflag =
1919         target_to_host_bitmask(tswap32(target->c_lflag), lflag_tbl);
1920     host->c_line = target->c_line;
1921
1922     host->c_cc[VINTR] = target->c_cc[TARGET_VINTR];
1923     host->c_cc[VQUIT] = target->c_cc[TARGET_VQUIT];
1924     host->c_cc[VERASE] = target->c_cc[TARGET_VERASE];
1925     host->c_cc[VKILL] = target->c_cc[TARGET_VKILL];
1926     host->c_cc[VEOF] = target->c_cc[TARGET_VEOF];
1927     host->c_cc[VTIME] = target->c_cc[TARGET_VTIME];
1928     host->c_cc[VMIN] = target->c_cc[TARGET_VMIN];
1929     host->c_cc[VSWTC] = target->c_cc[TARGET_VSWTC];
1930     host->c_cc[VSTART] = target->c_cc[TARGET_VSTART];
1931     host->c_cc[VSTOP] = target->c_cc[TARGET_VSTOP];
1932     host->c_cc[VSUSP] = target->c_cc[TARGET_VSUSP];
1933     host->c_cc[VEOL] = target->c_cc[TARGET_VEOL];
1934     host->c_cc[VREPRINT] = target->c_cc[TARGET_VREPRINT];
1935     host->c_cc[VDISCARD] = target->c_cc[TARGET_VDISCARD];
1936     host->c_cc[VWERASE] = target->c_cc[TARGET_VWERASE];
1937     host->c_cc[VLNEXT] = target->c_cc[TARGET_VLNEXT];
1938     host->c_cc[VEOL2] = target->c_cc[TARGET_VEOL2];
1939 }
1940
1941 static void host_to_target_termios (void *dst, const void *src)
1942 {
1943     struct target_termios *target = dst;
1944     const struct host_termios *host = src;
1945
1946     target->c_iflag =
1947         tswap32(host_to_target_bitmask(host->c_iflag, iflag_tbl));
1948     target->c_oflag =
1949         tswap32(host_to_target_bitmask(host->c_oflag, oflag_tbl));
1950     target->c_cflag =
1951         tswap32(host_to_target_bitmask(host->c_cflag, cflag_tbl));
1952     target->c_lflag =
1953         tswap32(host_to_target_bitmask(host->c_lflag, lflag_tbl));
1954     target->c_line = host->c_line;
1955
1956     target->c_cc[TARGET_VINTR] = host->c_cc[VINTR];
1957     target->c_cc[TARGET_VQUIT] = host->c_cc[VQUIT];
1958     target->c_cc[TARGET_VERASE] = host->c_cc[VERASE];
1959     target->c_cc[TARGET_VKILL] = host->c_cc[VKILL];
1960     target->c_cc[TARGET_VEOF] = host->c_cc[VEOF];
1961     target->c_cc[TARGET_VTIME] = host->c_cc[VTIME];
1962     target->c_cc[TARGET_VMIN] = host->c_cc[VMIN];
1963     target->c_cc[TARGET_VSWTC] = host->c_cc[VSWTC];
1964     target->c_cc[TARGET_VSTART] = host->c_cc[VSTART];
1965     target->c_cc[TARGET_VSTOP] = host->c_cc[VSTOP];
1966     target->c_cc[TARGET_VSUSP] = host->c_cc[VSUSP];
1967     target->c_cc[TARGET_VEOL] = host->c_cc[VEOL];
1968     target->c_cc[TARGET_VREPRINT] = host->c_cc[VREPRINT];
1969     target->c_cc[TARGET_VDISCARD] = host->c_cc[VDISCARD];
1970     target->c_cc[TARGET_VWERASE] = host->c_cc[VWERASE];
1971     target->c_cc[TARGET_VLNEXT] = host->c_cc[VLNEXT];
1972     target->c_cc[TARGET_VEOL2] = host->c_cc[VEOL2];
1973 }
1974
1975 StructEntry struct_termios_def = {
1976     .convert = { host_to_target_termios, target_to_host_termios },
1977     .size = { sizeof(struct target_termios), sizeof(struct host_termios) },
1978     .align = { __alignof__(struct target_termios), __alignof__(struct host_termios) },
1979 };
1980
1981 static bitmask_transtbl mmap_flags_tbl[] = {
1982         { TARGET_MAP_SHARED, TARGET_MAP_SHARED, MAP_SHARED, MAP_SHARED },
1983         { TARGET_MAP_PRIVATE, TARGET_MAP_PRIVATE, MAP_PRIVATE, MAP_PRIVATE },
1984         { TARGET_MAP_FIXED, TARGET_MAP_FIXED, MAP_FIXED, MAP_FIXED },
1985         { TARGET_MAP_ANONYMOUS, TARGET_MAP_ANONYMOUS, MAP_ANONYMOUS, MAP_ANONYMOUS },
1986         { TARGET_MAP_GROWSDOWN, TARGET_MAP_GROWSDOWN, MAP_GROWSDOWN, MAP_GROWSDOWN },
1987         { TARGET_MAP_DENYWRITE, TARGET_MAP_DENYWRITE, MAP_DENYWRITE, MAP_DENYWRITE },
1988         { TARGET_MAP_EXECUTABLE, TARGET_MAP_EXECUTABLE, MAP_EXECUTABLE, MAP_EXECUTABLE },
1989         { TARGET_MAP_LOCKED, TARGET_MAP_LOCKED, MAP_LOCKED, MAP_LOCKED },
1990         { 0, 0, 0, 0 }
1991 };
1992
1993 static bitmask_transtbl fcntl_flags_tbl[] = {
1994         { TARGET_O_ACCMODE,   TARGET_O_WRONLY,    O_ACCMODE,   O_WRONLY,    },
1995         { TARGET_O_ACCMODE,   TARGET_O_RDWR,      O_ACCMODE,   O_RDWR,      },
1996         { TARGET_O_CREAT,     TARGET_O_CREAT,     O_CREAT,     O_CREAT,     },
1997         { TARGET_O_EXCL,      TARGET_O_EXCL,      O_EXCL,      O_EXCL,      },
1998         { TARGET_O_NOCTTY,    TARGET_O_NOCTTY,    O_NOCTTY,    O_NOCTTY,    },
1999         { TARGET_O_TRUNC,     TARGET_O_TRUNC,     O_TRUNC,     O_TRUNC,     },
2000         { TARGET_O_APPEND,    TARGET_O_APPEND,    O_APPEND,    O_APPEND,    },
2001         { TARGET_O_NONBLOCK,  TARGET_O_NONBLOCK,  O_NONBLOCK,  O_NONBLOCK,  },
2002         { TARGET_O_SYNC,      TARGET_O_SYNC,      O_SYNC,      O_SYNC,      },
2003         { TARGET_FASYNC,      TARGET_FASYNC,      FASYNC,      FASYNC,      },
2004         { TARGET_O_DIRECTORY, TARGET_O_DIRECTORY, O_DIRECTORY, O_DIRECTORY, },
2005         { TARGET_O_NOFOLLOW,  TARGET_O_NOFOLLOW,  O_NOFOLLOW,  O_NOFOLLOW,  },
2006         { TARGET_O_LARGEFILE, TARGET_O_LARGEFILE, O_LARGEFILE, O_LARGEFILE, },
2007 #if defined(O_DIRECT)
2008         { TARGET_O_DIRECT,    TARGET_O_DIRECT,    O_DIRECT,    O_DIRECT,    },
2009 #endif
2010         { 0, 0, 0, 0 }
2011 };
2012
2013 #if defined(TARGET_I386)
2014
2015 /* NOTE: there is really one LDT for all the threads */
2016 uint8_t *ldt_table;
2017
2018 static int read_ldt(target_ulong ptr, unsigned long bytecount)
2019 {
2020     int size;
2021     void *p;
2022
2023     if (!ldt_table)
2024         return 0;
2025     size = TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE;
2026     if (size > bytecount)
2027         size = bytecount;
2028     p = lock_user(ptr, size, 0);
2029     /* ??? Shoudl this by byteswapped?  */
2030     memcpy(p, ldt_table, size);
2031     unlock_user(p, ptr, size);
2032     return size;
2033 }
2034
2035 /* XXX: add locking support */
2036 static int write_ldt(CPUX86State *env,
2037                      target_ulong ptr, unsigned long bytecount, int oldmode)
2038 {
2039     struct target_modify_ldt_ldt_s ldt_info;
2040     struct target_modify_ldt_ldt_s *target_ldt_info;
2041     int seg_32bit, contents, read_exec_only, limit_in_pages;
2042     int seg_not_present, useable;
2043     uint32_t *lp, entry_1, entry_2;
2044
2045     if (bytecount != sizeof(ldt_info))
2046         return -EINVAL;
2047     lock_user_struct(target_ldt_info, ptr, 1);
2048     ldt_info.entry_number = tswap32(target_ldt_info->entry_number);
2049     ldt_info.base_addr = tswapl(target_ldt_info->base_addr);
2050     ldt_info.limit = tswap32(target_ldt_info->limit);
2051     ldt_info.flags = tswap32(target_ldt_info->flags);
2052     unlock_user_struct(target_ldt_info, ptr, 0);
2053
2054     if (ldt_info.entry_number >= TARGET_LDT_ENTRIES)
2055         return -EINVAL;
2056     seg_32bit = ldt_info.flags & 1;
2057     contents = (ldt_info.flags >> 1) & 3;
2058     read_exec_only = (ldt_info.flags >> 3) & 1;
2059     limit_in_pages = (ldt_info.flags >> 4) & 1;
2060     seg_not_present = (ldt_info.flags >> 5) & 1;
2061     useable = (ldt_info.flags >> 6) & 1;
2062
2063     if (contents == 3) {
2064         if (oldmode)
2065             return -EINVAL;
2066         if (seg_not_present == 0)
2067             return -EINVAL;
2068     }
2069     /* allocate the LDT */
2070     if (!ldt_table) {
2071         ldt_table = malloc(TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE);
2072         if (!ldt_table)
2073             return -ENOMEM;
2074         memset(ldt_table, 0, TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE);
2075         env->ldt.base = h2g(ldt_table);
2076         env->ldt.limit = 0xffff;
2077     }
2078
2079     /* NOTE: same code as Linux kernel */
2080     /* Allow LDTs to be cleared by the user. */
2081     if (ldt_info.base_addr == 0 && ldt_info.limit == 0) {
2082         if (oldmode ||
2083             (contents == 0              &&
2084              read_exec_only == 1        &&
2085              seg_32bit == 0             &&
2086              limit_in_pages == 0        &&
2087              seg_not_present == 1       &&
2088              useable == 0 )) {
2089             entry_1 = 0;
2090             entry_2 = 0;
2091             goto install;
2092         }
2093     }
2094
2095     entry_1 = ((ldt_info.base_addr & 0x0000ffff) << 16) |
2096         (ldt_info.limit & 0x0ffff);
2097     entry_2 = (ldt_info.base_addr & 0xff000000) |
2098         ((ldt_info.base_addr & 0x00ff0000) >> 16) |
2099         (ldt_info.limit & 0xf0000) |
2100         ((read_exec_only ^ 1) << 9) |
2101         (contents << 10) |
2102         ((seg_not_present ^ 1) << 15) |
2103         (seg_32bit << 22) |
2104         (limit_in_pages << 23) |
2105         0x7000;
2106     if (!oldmode)
2107         entry_2 |= (useable << 20);
2108
2109     /* Install the new entry ...  */
2110 install:
2111     lp = (uint32_t *)(ldt_table + (ldt_info.entry_number << 3));
2112     lp[0] = tswap32(entry_1);
2113     lp[1] = tswap32(entry_2);
2114     return 0;
2115 }
2116
2117 /* specific and weird i386 syscalls */
2118 int do_modify_ldt(CPUX86State *env, int func, target_ulong ptr, unsigned long bytecount)
2119 {
2120     int ret = -ENOSYS;
2121
2122     switch (func) {
2123     case 0:
2124         ret = read_ldt(ptr, bytecount);
2125         break;
2126     case 1:
2127         ret = write_ldt(env, ptr, bytecount, 1);
2128         break;
2129     case 0x11:
2130         ret = write_ldt(env, ptr, bytecount, 0);
2131         break;
2132     }
2133     return ret;
2134 }
2135
2136 #endif /* defined(TARGET_I386) */
2137
2138 /* this stack is the equivalent of the kernel stack associated with a
2139    thread/process */
2140 #define NEW_STACK_SIZE 8192
2141
2142 static int clone_func(void *arg)
2143 {
2144     CPUState *env = arg;
2145     cpu_loop(env);
2146     /* never exits */
2147     return 0;
2148 }
2149
2150 int do_fork(CPUState *env, unsigned int flags, unsigned long newsp)
2151 {
2152     int ret;
2153     TaskState *ts;
2154     uint8_t *new_stack;
2155     CPUState *new_env;
2156
2157     if (flags & CLONE_VM) {
2158         ts = malloc(sizeof(TaskState) + NEW_STACK_SIZE);
2159         memset(ts, 0, sizeof(TaskState));
2160         new_stack = ts->stack;
2161         ts->used = 1;
2162         /* add in task state list */
2163         ts->next = first_task_state;
2164         first_task_state = ts;
2165         /* we create a new CPU instance. */
2166         new_env = cpu_copy(env);
2167 #if defined(TARGET_I386)
2168         if (!newsp)
2169             newsp = env->regs[R_ESP];
2170         new_env->regs[R_ESP] = newsp;
2171         new_env->regs[R_EAX] = 0;
2172 #elif defined(TARGET_ARM)
2173         if (!newsp)
2174             newsp = env->regs[13];
2175         new_env->regs[13] = newsp;
2176         new_env->regs[0] = 0;
2177 #elif defined(TARGET_SPARC)
2178         if (!newsp)
2179             newsp = env->regwptr[22];
2180         new_env->regwptr[22] = newsp;
2181         new_env->regwptr[0] = 0;
2182         /* XXXXX */
2183         printf ("HELPME: %s:%d\n", __FILE__, __LINE__);
2184 #elif defined(TARGET_M68K)
2185         if (!newsp)
2186             newsp = env->aregs[7];
2187         new_env->aregs[7] = newsp;
2188         new_env->dregs[0] = 0;
2189         /* ??? is this sufficient?  */
2190 #elif defined(TARGET_MIPS)
2191         if (!newsp)
2192             newsp = env->gpr[29][env->current_tc];
2193         new_env->gpr[29][env->current_tc] = newsp;
2194 #elif defined(TARGET_PPC)
2195         if (!newsp)
2196             newsp = env->gpr[1];
2197         new_env->gpr[1] = newsp;
2198         {
2199             int i;
2200             for (i = 7; i < 32; i++)
2201                 new_env->gpr[i] = 0;
2202         }
2203 #elif defined(TARGET_SH4)
2204         if (!newsp)
2205           newsp = env->gregs[15];
2206         new_env->gregs[15] = newsp;
2207         /* XXXXX */
2208 #elif defined(TARGET_ALPHA)
2209        if (!newsp)
2210          newsp = env->ir[30];
2211        new_env->ir[30] = newsp;
2212         /* ? */
2213         {
2214             int i;
2215             for (i = 7; i < 30; i++)
2216                 new_env->ir[i] = 0;
2217         }
2218 #else
2219 #error unsupported target CPU
2220 #endif
2221         new_env->opaque = ts;
2222 #ifdef __ia64__
2223         ret = __clone2(clone_func, new_stack + NEW_STACK_SIZE, flags, new_env);
2224 #else
2225         ret = clone(clone_func, new_stack + NEW_STACK_SIZE, flags, new_env);
2226 #endif
2227     } else {
2228         /* if no CLONE_VM, we consider it is a fork */
2229         if ((flags & ~CSIGNAL) != 0)
2230             return -EINVAL;
2231         ret = fork();
2232     }
2233     return ret;
2234 }
2235
2236 static long do_fcntl(int fd, int cmd, target_ulong arg)
2237 {
2238     struct flock fl;
2239     struct target_flock *target_fl;
2240     struct flock64 fl64;
2241     struct target_flock64 *target_fl64;
2242     long ret;
2243
2244     switch(cmd) {
2245     case TARGET_F_GETLK:
2246         lock_user_struct(target_fl, arg, 1);
2247         fl.l_type = tswap16(target_fl->l_type);
2248         fl.l_whence = tswap16(target_fl->l_whence);
2249         fl.l_start = tswapl(target_fl->l_start);
2250         fl.l_len = tswapl(target_fl->l_len);
2251         fl.l_pid = tswapl(target_fl->l_pid);
2252         unlock_user_struct(target_fl, arg, 0);
2253         ret = fcntl(fd, cmd, &fl);
2254         if (ret == 0) {
2255             lock_user_struct(target_fl, arg, 0);
2256             target_fl->l_type = tswap16(fl.l_type);
2257             target_fl->l_whence = tswap16(fl.l_whence);
2258             target_fl->l_start = tswapl(fl.l_start);
2259             target_fl->l_len = tswapl(fl.l_len);
2260             target_fl->l_pid = tswapl(fl.l_pid);
2261             unlock_user_struct(target_fl, arg, 1);
2262         }
2263         break;
2264
2265     case TARGET_F_SETLK:
2266     case TARGET_F_SETLKW:
2267         lock_user_struct(target_fl, arg, 1);
2268         fl.l_type = tswap16(target_fl->l_type);
2269         fl.l_whence = tswap16(target_fl->l_whence);
2270         fl.l_start = tswapl(target_fl->l_start);
2271         fl.l_len = tswapl(target_fl->l_len);
2272         fl.l_pid = tswapl(target_fl->l_pid);
2273         unlock_user_struct(target_fl, arg, 0);
2274         ret = fcntl(fd, cmd, &fl);
2275         break;
2276
2277     case TARGET_F_GETLK64:
2278         lock_user_struct(target_fl64, arg, 1);
2279         fl64.l_type = tswap16(target_fl64->l_type) >> 1;
2280         fl64.l_whence = tswap16(target_fl64->l_whence);
2281         fl64.l_start = tswapl(target_fl64->l_start);
2282         fl64.l_len = tswapl(target_fl64->l_len);
2283         fl64.l_pid = tswap16(target_fl64->l_pid);
2284         unlock_user_struct(target_fl64, arg, 0);
2285         ret = fcntl(fd, cmd >> 1, &fl64);
2286         if (ret == 0) {
2287             lock_user_struct(target_fl64, arg, 0);
2288             target_fl64->l_type = tswap16(fl64.l_type) >> 1;
2289             target_fl64->l_whence = tswap16(fl64.l_whence);
2290             target_fl64->l_start = tswapl(fl64.l_start);
2291             target_fl64->l_len = tswapl(fl64.l_len);
2292             target_fl64->l_pid = tswapl(fl64.l_pid);
2293             unlock_user_struct(target_fl64, arg, 1);
2294         }
2295                 break;
2296     case TARGET_F_SETLK64:
2297     case TARGET_F_SETLKW64:
2298         lock_user_struct(target_fl64, arg, 1);
2299         fl64.l_type = tswap16(target_fl64->l_type) >> 1;
2300         fl64.l_whence = tswap16(target_fl64->l_whence);
2301         fl64.l_start = tswapl(target_fl64->l_start);
2302         fl64.l_len = tswapl(target_fl64->l_len);
2303         fl64.l_pid = tswap16(target_fl64->l_pid);
2304         unlock_user_struct(target_fl64, arg, 0);
2305                 ret = fcntl(fd, cmd >> 1, &fl64);
2306         break;
2307
2308     case F_GETFL:
2309         ret = fcntl(fd, cmd, arg);
2310         ret = host_to_target_bitmask(ret, fcntl_flags_tbl);
2311         break;
2312
2313     case F_SETFL:
2314         ret = fcntl(fd, cmd, target_to_host_bitmask(arg, fcntl_flags_tbl));
2315         break;
2316
2317     default:
2318         ret = fcntl(fd, cmd, arg);
2319         break;
2320     }
2321     return ret;
2322 }
2323
2324 #ifdef USE_UID16
2325
2326 static inline int high2lowuid(int uid)
2327 {
2328     if (uid > 65535)
2329         return 65534;
2330     else
2331         return uid;
2332 }
2333
2334 static inline int high2lowgid(int gid)
2335 {
2336     if (gid > 65535)
2337         return 65534;
2338     else
2339         return gid;
2340 }
2341
2342 static inline int low2highuid(int uid)
2343 {
2344     if ((int16_t)uid == -1)
2345         return -1;
2346     else
2347         return uid;
2348 }
2349
2350 static inline int low2highgid(int gid)
2351 {
2352     if ((int16_t)gid == -1)
2353         return -1;
2354     else
2355         return gid;
2356 }
2357
2358 #endif /* USE_UID16 */
2359
2360 void syscall_init(void)
2361 {
2362     IOCTLEntry *ie;
2363     const argtype *arg_type;
2364     int size;
2365
2366 #define STRUCT(name, list...) thunk_register_struct(STRUCT_ ## name, #name, struct_ ## name ## _def);
2367 #define STRUCT_SPECIAL(name) thunk_register_struct_direct(STRUCT_ ## name, #name, &struct_ ## name ## _def);
2368 #include "syscall_types.h"
2369 #undef STRUCT
2370 #undef STRUCT_SPECIAL
2371
2372     /* we patch the ioctl size if necessary. We rely on the fact that
2373        no ioctl has all the bits at '1' in the size field */
2374     ie = ioctl_entries;
2375     while (ie->target_cmd != 0) {
2376         if (((ie->target_cmd >> TARGET_IOC_SIZESHIFT) & TARGET_IOC_SIZEMASK) ==
2377             TARGET_IOC_SIZEMASK) {
2378             arg_type = ie->arg_type;
2379             if (arg_type[0] != TYPE_PTR) {
2380                 fprintf(stderr, "cannot patch size for ioctl 0x%x\n",
2381                         ie->target_cmd);
2382                 exit(1);
2383             }
2384             arg_type++;
2385             size = thunk_type_size(arg_type, 0);
2386             ie->target_cmd = (ie->target_cmd &
2387                               ~(TARGET_IOC_SIZEMASK << TARGET_IOC_SIZESHIFT)) |
2388                 (size << TARGET_IOC_SIZESHIFT);
2389         }
2390         /* automatic consistency check if same arch */
2391 #if defined(__i386__) && defined(TARGET_I386)
2392         if (ie->target_cmd != ie->host_cmd) {
2393             fprintf(stderr, "ERROR: ioctl: target=0x%x host=0x%x\n",
2394                     ie->target_cmd, ie->host_cmd);
2395         }
2396 #endif
2397         ie++;
2398     }
2399 }
2400
2401 static inline uint64_t target_offset64(uint32_t word0, uint32_t word1)
2402 {
2403 #ifdef TARGET_WORDS_BIG_ENDIAN
2404     return ((uint64_t)word0 << 32) | word1;
2405 #else
2406     return ((uint64_t)word1 << 32) | word0;
2407 #endif
2408 }
2409
2410 #ifdef TARGET_NR_truncate64
2411 static inline long target_truncate64(void *cpu_env, const char *arg1,
2412                                      long arg2, long arg3, long arg4)
2413 {
2414 #ifdef TARGET_ARM
2415     if (((CPUARMState *)cpu_env)->eabi)
2416       {
2417         arg2 = arg3;
2418         arg3 = arg4;
2419       }
2420 #endif
2421     return get_errno(truncate64(arg1, target_offset64(arg2, arg3)));
2422 }
2423 #endif
2424
2425 #ifdef TARGET_NR_ftruncate64
2426 static inline long target_ftruncate64(void *cpu_env, long arg1, long arg2,
2427                                       long arg3, long arg4)
2428 {
2429 #ifdef TARGET_ARM
2430     if (((CPUARMState *)cpu_env)->eabi)
2431       {
2432         arg2 = arg3;
2433         arg3 = arg4;
2434       }
2435 #endif
2436     return get_errno(ftruncate64(arg1, target_offset64(arg2, arg3)));
2437 }
2438 #endif
2439
2440 static inline void target_to_host_timespec(struct timespec *host_ts,
2441                                            target_ulong target_addr)
2442 {
2443     struct target_timespec *target_ts;
2444
2445     lock_user_struct(target_ts, target_addr, 1);
2446     host_ts->tv_sec = tswapl(target_ts->tv_sec);
2447     host_ts->tv_nsec = tswapl(target_ts->tv_nsec);
2448     unlock_user_struct(target_ts, target_addr, 0);
2449 }
2450
2451 static inline void host_to_target_timespec(target_ulong target_addr,
2452                                            struct timespec *host_ts)
2453 {
2454     struct target_timespec *target_ts;
2455
2456     lock_user_struct(target_ts, target_addr, 0);
2457     target_ts->tv_sec = tswapl(host_ts->tv_sec);
2458     target_ts->tv_nsec = tswapl(host_ts->tv_nsec);
2459     unlock_user_struct(target_ts, target_addr, 1);
2460 }
2461
2462 long do_syscall(void *cpu_env, int num, long arg1, long arg2, long arg3,
2463                 long arg4, long arg5, long arg6)
2464 {
2465     long ret;
2466     struct stat st;
2467     struct statfs stfs;
2468     void *p;
2469
2470 #ifdef DEBUG
2471     gemu_log("syscall %d", num);
2472 #endif
2473     switch(num) {
2474     case TARGET_NR_exit:
2475 #ifdef HAVE_GPROF
2476         _mcleanup();
2477 #endif
2478         gdb_exit(cpu_env, arg1);
2479         /* XXX: should free thread stack and CPU env */
2480         _exit(arg1);
2481         ret = 0; /* avoid warning */
2482         break;
2483     case TARGET_NR_read:
2484         page_unprotect_range(arg2, arg3);
2485         p = lock_user(arg2, arg3, 0);
2486         ret = get_errno(read(arg1, p, arg3));
2487         unlock_user(p, arg2, ret);
2488         break;
2489     case TARGET_NR_write:
2490         p = lock_user(arg2, arg3, 1);
2491         ret = get_errno(write(arg1, p, arg3));
2492         unlock_user(p, arg2, 0);
2493         break;
2494     case TARGET_NR_open:
2495         p = lock_user_string(arg1);
2496         ret = get_errno(open(path(p),
2497                              target_to_host_bitmask(arg2, fcntl_flags_tbl),
2498                              arg3));
2499         unlock_user(p, arg1, 0);
2500         break;
2501     case TARGET_NR_close:
2502         ret = get_errno(close(arg1));
2503         break;
2504     case TARGET_NR_brk:
2505         ret = do_brk(arg1);
2506         break;
2507     case TARGET_NR_fork:
2508         ret = get_errno(do_fork(cpu_env, SIGCHLD, 0));
2509         break;
2510 #ifdef TARGET_NR_waitpid
2511     case TARGET_NR_waitpid:
2512         {
2513             int status;
2514             ret = get_errno(waitpid(arg1, &status, arg3));
2515             if (!is_error(ret) && arg2)
2516                 tput32(arg2, status);
2517         }
2518         break;
2519 #endif
2520 #ifdef TARGET_NR_creat /* not on alpha */
2521     case TARGET_NR_creat:
2522         p = lock_user_string(arg1);
2523         ret = get_errno(creat(p, arg2));
2524         unlock_user(p, arg1, 0);
2525         break;
2526 #endif
2527     case TARGET_NR_link:
2528         {
2529             void * p2;
2530             p = lock_user_string(arg1);
2531             p2 = lock_user_string(arg2);
2532             ret = get_errno(link(p, p2));
2533             unlock_user(p2, arg2, 0);
2534             unlock_user(p, arg1, 0);
2535         }
2536         break;
2537     case TARGET_NR_unlink:
2538         p = lock_user_string(arg1);
2539         ret = get_errno(unlink(p));
2540         unlock_user(p, arg1, 0);
2541         break;
2542     case TARGET_NR_execve:
2543         {
2544             char **argp, **envp;
2545             int argc, envc;
2546             target_ulong gp;
2547             target_ulong guest_argp;
2548             target_ulong guest_envp;
2549             target_ulong addr;
2550             char **q;
2551
2552             argc = 0;
2553             guest_argp = arg2;
2554             for (gp = guest_argp; tgetl(gp); gp++)
2555                 argc++;
2556             envc = 0;
2557             guest_envp = arg3;
2558             for (gp = guest_envp; tgetl(gp); gp++)
2559                 envc++;
2560
2561             argp = alloca((argc + 1) * sizeof(void *));
2562             envp = alloca((envc + 1) * sizeof(void *));
2563
2564             for (gp = guest_argp, q = argp; ;
2565                   gp += sizeof(target_ulong), q++) {
2566                 addr = tgetl(gp);
2567                 if (!addr)
2568                     break;
2569                 *q = lock_user_string(addr);
2570             }
2571             *q = NULL;
2572
2573             for (gp = guest_envp, q = envp; ;
2574                   gp += sizeof(target_ulong), q++) {
2575                 addr = tgetl(gp);
2576                 if (!addr)
2577                     break;
2578                 *q = lock_user_string(addr);
2579             }
2580             *q = NULL;
2581
2582             p = lock_user_string(arg1);
2583             ret = get_errno(execve(p, argp, envp));
2584             unlock_user(p, arg1, 0);
2585
2586             for (gp = guest_argp, q = argp; *q;
2587                   gp += sizeof(target_ulong), q++) {
2588                 addr = tgetl(gp);
2589                 unlock_user(*q, addr, 0);
2590             }
2591             for (gp = guest_envp, q = envp; *q;
2592                   gp += sizeof(target_ulong), q++) {
2593                 addr = tgetl(gp);
2594                 unlock_user(*q, addr, 0);
2595             }
2596         }
2597         break;
2598     case TARGET_NR_chdir:
2599         p = lock_user_string(arg1);
2600         ret = get_errno(chdir(p));
2601         unlock_user(p, arg1, 0);
2602         break;
2603 #ifdef TARGET_NR_time
2604     case TARGET_NR_time:
2605         {
2606             time_t host_time;
2607             ret = get_errno(time(&host_time));
2608             if (!is_error(ret) && arg1)
2609                 tputl(arg1, host_time);
2610         }
2611         break;
2612 #endif
2613     case TARGET_NR_mknod:
2614         p = lock_user_string(arg1);
2615         ret = get_errno(mknod(p, arg2, arg3));
2616         unlock_user(p, arg1, 0);
2617         break;
2618     case TARGET_NR_chmod:
2619         p = lock_user_string(arg1);
2620         ret = get_errno(chmod(p, arg2));
2621         unlock_user(p, arg1, 0);
2622         break;
2623 #ifdef TARGET_NR_break
2624     case TARGET_NR_break:
2625         goto unimplemented;
2626 #endif
2627 #ifdef TARGET_NR_oldstat
2628     case TARGET_NR_oldstat:
2629         goto unimplemented;
2630 #endif
2631     case TARGET_NR_lseek:
2632         ret = get_errno(lseek(arg1, arg2, arg3));
2633         break;
2634 #ifdef TARGET_NR_getxpid
2635     case TARGET_NR_getxpid:
2636 #else
2637     case TARGET_NR_getpid:
2638 #endif
2639         ret = get_errno(getpid());
2640         break;
2641     case TARGET_NR_mount:
2642                 {
2643                         /* need to look at the data field */
2644                         void *p2, *p3;
2645                         p = lock_user_string(arg1);
2646                         p2 = lock_user_string(arg2);
2647                         p3 = lock_user_string(arg3);
2648                         ret = get_errno(mount(p, p2, p3, (unsigned long)arg4, (const void *)arg5));
2649                         unlock_user(p, arg1, 0);
2650                         unlock_user(p2, arg2, 0);
2651                         unlock_user(p3, arg3, 0);
2652                         break;
2653                 }
2654 #ifdef TARGET_NR_umount
2655     case TARGET_NR_umount:
2656         p = lock_user_string(arg1);
2657         ret = get_errno(umount(p));
2658         unlock_user(p, arg1, 0);
2659         break;
2660 #endif
2661 #ifdef TARGET_NR_stime /* not on alpha */
2662     case TARGET_NR_stime:
2663         {
2664             time_t host_time;
2665             host_time = tgetl(arg1);
2666             ret = get_errno(stime(&host_time));
2667         }
2668         break;
2669 #endif
2670     case TARGET_NR_ptrace:
2671         goto unimplemented;
2672 #ifdef TARGET_NR_alarm /* not on alpha */
2673     case TARGET_NR_alarm:
2674         ret = alarm(arg1);
2675         break;
2676 #endif
2677 #ifdef TARGET_NR_oldfstat
2678     case TARGET_NR_oldfstat:
2679         goto unimplemented;
2680 #endif
2681 #ifdef TARGET_NR_pause /* not on alpha */
2682     case TARGET_NR_pause:
2683         ret = get_errno(pause());
2684         break;
2685 #endif
2686 #ifdef TARGET_NR_utime
2687     case TARGET_NR_utime:
2688         {
2689             struct utimbuf tbuf, *host_tbuf;
2690             struct target_utimbuf *target_tbuf;
2691             if (arg2) {
2692                 lock_user_struct(target_tbuf, arg2, 1);
2693                 tbuf.actime = tswapl(target_tbuf->actime);
2694                 tbuf.modtime = tswapl(target_tbuf->modtime);
2695                 unlock_user_struct(target_tbuf, arg2, 0);
2696                 host_tbuf = &tbuf;
2697             } else {
2698                 host_tbuf = NULL;
2699             }
2700             p = lock_user_string(arg1);
2701             ret = get_errno(utime(p, host_tbuf));
2702             unlock_user(p, arg1, 0);
2703         }
2704         break;
2705 #endif
2706     case TARGET_NR_utimes:
2707         {
2708             struct timeval *tvp, tv[2];
2709             if (arg2) {
2710                 target_to_host_timeval(&tv[0], arg2);
2711                 target_to_host_timeval(&tv[1],
2712                     arg2 + sizeof (struct target_timeval));
2713                 tvp = tv;
2714             } else {
2715                 tvp = NULL;
2716             }
2717             p = lock_user_string(arg1);
2718             ret = get_errno(utimes(p, tvp));
2719             unlock_user(p, arg1, 0);
2720         }
2721         break;
2722 #ifdef TARGET_NR_stty
2723     case TARGET_NR_stty:
2724         goto unimplemented;
2725 #endif
2726 #ifdef TARGET_NR_gtty
2727     case TARGET_NR_gtty:
2728         goto unimplemented;
2729 #endif
2730     case TARGET_NR_access:
2731         p = lock_user_string(arg1);
2732         ret = get_errno(access(p, arg2));
2733         unlock_user(p, arg1, 0);
2734         break;
2735 #ifdef TARGET_NR_nice /* not on alpha */
2736     case TARGET_NR_nice:
2737         ret = get_errno(nice(arg1));
2738         break;
2739 #endif
2740 #ifdef TARGET_NR_ftime
2741     case TARGET_NR_ftime:
2742         goto unimplemented;
2743 #endif
2744     case TARGET_NR_sync:
2745         sync();
2746         ret = 0;
2747         break;
2748     case TARGET_NR_kill:
2749         ret = get_errno(kill(arg1, arg2));
2750         break;
2751     case TARGET_NR_rename:
2752         {
2753             void *p2;
2754             p = lock_user_string(arg1);
2755             p2 = lock_user_string(arg2);
2756             ret = get_errno(rename(p, p2));
2757             unlock_user(p2, arg2, 0);
2758             unlock_user(p, arg1, 0);
2759         }
2760         break;
2761     case TARGET_NR_mkdir:
2762         p = lock_user_string(arg1);
2763         ret = get_errno(mkdir(p, arg2));
2764         unlock_user(p, arg1, 0);
2765         break;
2766     case TARGET_NR_rmdir:
2767         p = lock_user_string(arg1);
2768         ret = get_errno(rmdir(p));
2769         unlock_user(p, arg1, 0);
2770         break;
2771     case TARGET_NR_dup:
2772         ret = get_errno(dup(arg1));
2773         break;
2774     case TARGET_NR_pipe:
2775         {
2776             int host_pipe[2];
2777             ret = get_errno(pipe(host_pipe));
2778             if (!is_error(ret)) {
2779 #if defined(TARGET_MIPS)
2780                 CPUMIPSState *env = (CPUMIPSState*)cpu_env;
2781                 env->gpr[3][env->current_tc] = host_pipe[1];
2782                 ret = host_pipe[0];
2783 #else
2784                 tput32(arg1, host_pipe[0]);
2785                 tput32(arg1 + 4, host_pipe[1]);
2786 #endif
2787             }
2788         }
2789         break;
2790     case TARGET_NR_times:
2791         {
2792             struct target_tms *tmsp;
2793             struct tms tms;
2794             ret = get_errno(times(&tms));
2795             if (arg1) {
2796                 tmsp = lock_user(arg1, sizeof(struct target_tms), 0);
2797                 tmsp->tms_utime = tswapl(host_to_target_clock_t(tms.tms_utime));
2798                 tmsp->tms_stime = tswapl(host_to_target_clock_t(tms.tms_stime));
2799                 tmsp->tms_cutime = tswapl(host_to_target_clock_t(tms.tms_cutime));
2800                 tmsp->tms_cstime = tswapl(host_to_target_clock_t(tms.tms_cstime));
2801             }
2802             if (!is_error(ret))
2803                 ret = host_to_target_clock_t(ret);
2804         }
2805         break;
2806 #ifdef TARGET_NR_prof
2807     case TARGET_NR_prof:
2808         goto unimplemented;
2809 #endif
2810 #ifdef TARGET_NR_signal
2811     case TARGET_NR_signal:
2812         goto unimplemented;
2813 #endif
2814     case TARGET_NR_acct:
2815         p = lock_user_string(arg1);
2816         ret = get_errno(acct(path(p)));
2817         unlock_user(p, arg1, 0);
2818         break;
2819 #ifdef TARGET_NR_umount2 /* not on alpha */
2820     case TARGET_NR_umount2:
2821         p = lock_user_string(arg1);
2822         ret = get_errno(umount2(p, arg2));
2823         unlock_user(p, arg1, 0);
2824         break;
2825 #endif
2826 #ifdef TARGET_NR_lock
2827     case TARGET_NR_lock:
2828         goto unimplemented;
2829 #endif
2830     case TARGET_NR_ioctl:
2831         ret = do_ioctl(arg1, arg2, arg3);
2832         break;
2833     case TARGET_NR_fcntl:
2834         ret = get_errno(do_fcntl(arg1, arg2, arg3));
2835         break;
2836 #ifdef TARGET_NR_mpx
2837     case TARGET_NR_mpx:
2838         goto unimplemented;
2839 #endif
2840     case TARGET_NR_setpgid:
2841         ret = get_errno(setpgid(arg1, arg2));
2842         break;
2843 #ifdef TARGET_NR_ulimit
2844     case TARGET_NR_ulimit:
2845         goto unimplemented;
2846 #endif
2847 #ifdef TARGET_NR_oldolduname
2848     case TARGET_NR_oldolduname:
2849         goto unimplemented;
2850 #endif
2851     case TARGET_NR_umask:
2852         ret = get_errno(umask(arg1));
2853         break;
2854     case TARGET_NR_chroot:
2855         p = lock_user_string(arg1);
2856         ret = get_errno(chroot(p));
2857         unlock_user(p, arg1, 0);
2858         break;
2859     case TARGET_NR_ustat:
2860         goto unimplemented;
2861     case TARGET_NR_dup2:
2862         ret = get_errno(dup2(arg1, arg2));
2863         break;
2864 #ifdef TARGET_NR_getppid /* not on alpha */
2865     case TARGET_NR_getppid:
2866         ret = get_errno(getppid());
2867         break;
2868 #endif
2869     case TARGET_NR_getpgrp:
2870         ret = get_errno(getpgrp());
2871         break;
2872     case TARGET_NR_setsid:
2873         ret = get_errno(setsid());
2874         break;
2875 #ifdef TARGET_NR_sigaction
2876     case TARGET_NR_sigaction:
2877         {
2878 #if !defined(TARGET_MIPS)
2879             struct target_old_sigaction *old_act;
2880             struct target_sigaction act, oact, *pact;
2881             if (arg2) {
2882                 lock_user_struct(old_act, arg2, 1);
2883                 act._sa_handler = old_act->_sa_handler;
2884                 target_siginitset(&act.sa_mask, old_act->sa_mask);
2885                 act.sa_flags = old_act->sa_flags;
2886                 act.sa_restorer = old_act->sa_restorer;
2887                 unlock_user_struct(old_act, arg2, 0);
2888                 pact = &act;
2889             } else {
2890                 pact = NULL;
2891             }
2892             ret = get_errno(do_sigaction(arg1, pact, &oact));
2893             if (!is_error(ret) && arg3) {
2894                 lock_user_struct(old_act, arg3, 0);
2895                 old_act->_sa_handler = oact._sa_handler;
2896                 old_act->sa_mask = oact.sa_mask.sig[0];
2897                 old_act->sa_flags = oact.sa_flags;
2898                 old_act->sa_restorer = oact.sa_restorer;
2899                 unlock_user_struct(old_act, arg3, 1);
2900             }
2901 #else
2902             struct target_sigaction act, oact, *pact, *old_act;
2903
2904             if (arg2) {
2905                 lock_user_struct(old_act, arg2, 1);
2906                 act._sa_handler = old_act->_sa_handler;
2907                 target_siginitset(&act.sa_mask, old_act->sa_mask.sig[0]);
2908                 act.sa_flags = old_act->sa_flags;
2909                 unlock_user_struct(old_act, arg2, 0);
2910                 pact = &act;
2911             } else {
2912                 pact = NULL;
2913             }
2914
2915             ret = get_errno(do_sigaction(arg1, pact, &oact));
2916
2917             if (!is_error(ret) && arg3) {
2918                 lock_user_struct(old_act, arg3, 0);
2919                 old_act->_sa_handler = oact._sa_handler;
2920                 old_act->sa_flags = oact.sa_flags;
2921                 old_act->sa_mask.sig[0] = oact.sa_mask.sig[0];
2922                 old_act->sa_mask.sig[1] = 0;
2923                 old_act->sa_mask.sig[2] = 0;
2924                 old_act->sa_mask.sig[3] = 0;
2925                 unlock_user_struct(old_act, arg3, 1);
2926             }
2927 #endif
2928         }
2929         break;
2930 #endif
2931     case TARGET_NR_rt_sigaction:
2932         {
2933             struct target_sigaction *act;
2934             struct target_sigaction *oact;
2935
2936             if (arg2)
2937                 lock_user_struct(act, arg2, 1);
2938             else
2939                 act = NULL;
2940             if (arg3)
2941                 lock_user_struct(oact, arg3, 0);
2942             else
2943                 oact = NULL;
2944             ret = get_errno(do_sigaction(arg1, act, oact));
2945             if (arg2)
2946                 unlock_user_struct(act, arg2, 0);
2947             if (arg3)
2948                 unlock_user_struct(oact, arg3, 1);
2949         }
2950         break;
2951 #ifdef TARGET_NR_sgetmask /* not on alpha */
2952     case TARGET_NR_sgetmask:
2953         {
2954             sigset_t cur_set;
2955             target_ulong target_set;
2956             sigprocmask(0, NULL, &cur_set);
2957             host_to_target_old_sigset(&target_set, &cur_set);
2958             ret = target_set;
2959         }
2960         break;
2961 #endif
2962 #ifdef TARGET_NR_ssetmask /* not on alpha */
2963     case TARGET_NR_ssetmask:
2964         {
2965             sigset_t set, oset, cur_set;
2966             target_ulong target_set = arg1;
2967             sigprocmask(0, NULL, &cur_set);
2968             target_to_host_old_sigset(&set, &target_set);
2969             sigorset(&set, &set, &cur_set);
2970             sigprocmask(SIG_SETMASK, &set, &oset);
2971             host_to_target_old_sigset(&target_set, &oset);
2972             ret = target_set;
2973         }
2974         break;
2975 #endif
2976 #ifdef TARGET_NR_sigprocmask
2977     case TARGET_NR_sigprocmask:
2978         {
2979             int how = arg1;
2980             sigset_t set, oldset, *set_ptr;
2981
2982             if (arg2) {
2983                 switch(how) {
2984                 case TARGET_SIG_BLOCK:
2985                     how = SIG_BLOCK;
2986                     break;
2987                 case TARGET_SIG_UNBLOCK:
2988                     how = SIG_UNBLOCK;
2989                     break;
2990                 case TARGET_SIG_SETMASK:
2991                     how = SIG_SETMASK;
2992                     break;
2993                 default:
2994                     ret = -EINVAL;
2995                     goto fail;
2996                 }
2997                 p = lock_user(arg2, sizeof(target_sigset_t), 1);
2998                 target_to_host_old_sigset(&set, p);
2999                 unlock_user(p, arg2, 0);
3000                 set_ptr = &set;
3001             } else {
3002                 how = 0;
3003                 set_ptr = NULL;
3004             }
3005             ret = get_errno(sigprocmask(arg1, set_ptr, &oldset));
3006             if (!is_error(ret) && arg3) {
3007                 p = lock_user(arg3, sizeof(target_sigset_t), 0);
3008                 host_to_target_old_sigset(p, &oldset);
3009                 unlock_user(p, arg3, sizeof(target_sigset_t));
3010             }
3011         }
3012         break;
3013 #endif
3014     case TARGET_NR_rt_sigprocmask:
3015         {
3016             int how = arg1;
3017             sigset_t set, oldset, *set_ptr;
3018
3019             if (arg2) {
3020                 switch(how) {
3021                 case TARGET_SIG_BLOCK:
3022                     how = SIG_BLOCK;
3023                     break;
3024                 case TARGET_SIG_UNBLOCK:
3025                     how = SIG_UNBLOCK;
3026                     break;
3027                 case TARGET_SIG_SETMASK:
3028                     how = SIG_SETMASK;
3029                     break;
3030                 default:
3031                     ret = -EINVAL;
3032                     goto fail;
3033                 }
3034                 p = lock_user(arg2, sizeof(target_sigset_t), 1);
3035                 target_to_host_sigset(&set, p);
3036                 unlock_user(p, arg2, 0);
3037                 set_ptr = &set;
3038             } else {
3039                 how = 0;
3040                 set_ptr = NULL;
3041             }
3042             ret = get_errno(sigprocmask(how, set_ptr, &oldset));
3043             if (!is_error(ret) && arg3) {
3044                 p = lock_user(arg3, sizeof(target_sigset_t), 0);
3045                 host_to_target_sigset(p, &oldset);
3046                 unlock_user(p, arg3, sizeof(target_sigset_t));
3047             }
3048         }
3049         break;
3050 #ifdef TARGET_NR_sigpending
3051     case TARGET_NR_sigpending:
3052         {
3053             sigset_t set;
3054             ret = get_errno(sigpending(&set));
3055             if (!is_error(ret)) {
3056                 p = lock_user(arg1, sizeof(target_sigset_t), 0);
3057                 host_to_target_old_sigset(p, &set);
3058                 unlock_user(p, arg1, sizeof(target_sigset_t));
3059             }
3060         }
3061         break;
3062 #endif
3063     case TARGET_NR_rt_sigpending:
3064         {
3065             sigset_t set;
3066             ret = get_errno(sigpending(&set));
3067             if (!is_error(ret)) {
3068                 p = lock_user(arg1, sizeof(target_sigset_t), 0);
3069                 host_to_target_sigset(p, &set);
3070                 unlock_user(p, arg1, sizeof(target_sigset_t));
3071             }
3072         }
3073         break;
3074 #ifdef TARGET_NR_sigsuspend
3075     case TARGET_NR_sigsuspend:
3076         {
3077             sigset_t set;
3078             p = lock_user(arg1, sizeof(target_sigset_t), 1);
3079             target_to_host_old_sigset(&set, p);
3080             unlock_user(p, arg1, 0);
3081             ret = get_errno(sigsuspend(&set));
3082         }
3083         break;
3084 #endif
3085     case TARGET_NR_rt_sigsuspend:
3086         {
3087             sigset_t set;
3088             p = lock_user(arg1, sizeof(target_sigset_t), 1);
3089             target_to_host_sigset(&set, p);
3090             unlock_user(p, arg1, 0);
3091             ret = get_errno(sigsuspend(&set));
3092         }
3093         break;
3094     case TARGET_NR_rt_sigtimedwait:
3095         {
3096             sigset_t set;
3097             struct timespec uts, *puts;
3098             siginfo_t uinfo;
3099
3100             p = lock_user(arg1, sizeof(target_sigset_t), 1);
3101             target_to_host_sigset(&set, p);
3102             unlock_user(p, arg1, 0);
3103             if (arg3) {
3104                 puts = &uts;
3105                 target_to_host_timespec(puts, arg3);
3106             } else {
3107                 puts = NULL;
3108             }
3109             ret = get_errno(sigtimedwait(&set, &uinfo, puts));
3110             if (!is_error(ret) && arg2) {
3111                 p = lock_user(arg2, sizeof(target_sigset_t), 0);
3112                 host_to_target_siginfo(p, &uinfo);
3113                 unlock_user(p, arg2, sizeof(target_sigset_t));
3114             }
3115         }
3116         break;
3117     case TARGET_NR_rt_sigqueueinfo:
3118         {
3119             siginfo_t uinfo;
3120             p = lock_user(arg3, sizeof(target_sigset_t), 1);
3121             target_to_host_siginfo(&uinfo, p);
3122             unlock_user(p, arg1, 0);
3123             ret = get_errno(sys_rt_sigqueueinfo(arg1, arg2, &uinfo));
3124         }
3125         break;
3126 #ifdef TARGET_NR_sigreturn
3127     case TARGET_NR_sigreturn:
3128         /* NOTE: ret is eax, so not transcoding must be done */
3129         ret = do_sigreturn(cpu_env);
3130         break;
3131 #endif
3132     case TARGET_NR_rt_sigreturn:
3133         /* NOTE: ret is eax, so not transcoding must be done */
3134         ret = do_rt_sigreturn(cpu_env);
3135         break;
3136     case TARGET_NR_sethostname:
3137         p = lock_user_string(arg1);
3138         ret = get_errno(sethostname(p, arg2));
3139         unlock_user(p, arg1, 0);
3140         break;
3141     case TARGET_NR_setrlimit:
3142         {
3143             /* XXX: convert resource ? */
3144             int resource = arg1;
3145             struct target_rlimit *target_rlim;
3146             struct rlimit rlim;
3147             lock_user_struct(target_rlim, arg2, 1);
3148             rlim.rlim_cur = tswapl(target_rlim->rlim_cur);
3149             rlim.rlim_max = tswapl(target_rlim->rlim_max);
3150             unlock_user_struct(target_rlim, arg2, 0);
3151             ret = get_errno(setrlimit(resource, &rlim));
3152         }
3153         break;
3154     case TARGET_NR_getrlimit:
3155         {
3156             /* XXX: convert resource ? */
3157             int resource = arg1;
3158             struct target_rlimit *target_rlim;
3159             struct rlimit rlim;
3160
3161             ret = get_errno(getrlimit(resource, &rlim));
3162             if (!is_error(ret)) {
3163                 lock_user_struct(target_rlim, arg2, 0);
3164                 rlim.rlim_cur = tswapl(target_rlim->rlim_cur);
3165                 rlim.rlim_max = tswapl(target_rlim->rlim_max);
3166                 unlock_user_struct(target_rlim, arg2, 1);
3167             }
3168         }
3169         break;
3170     case TARGET_NR_getrusage:
3171         {
3172             struct rusage rusage;
3173             ret = get_errno(getrusage(arg1, &rusage));
3174             if (!is_error(ret)) {
3175                 host_to_target_rusage(arg2, &rusage);
3176             }
3177         }
3178         break;
3179     case TARGET_NR_gettimeofday:
3180         {
3181             struct timeval tv;
3182             ret = get_errno(gettimeofday(&tv, NULL));
3183             if (!is_error(ret)) {
3184                 host_to_target_timeval(arg1, &tv);
3185             }
3186         }
3187         break;
3188     case TARGET_NR_settimeofday:
3189         {
3190             struct timeval tv;
3191             target_to_host_timeval(&tv, arg1);
3192             ret = get_errno(settimeofday(&tv, NULL));
3193         }
3194         break;
3195 #ifdef TARGET_NR_select
3196     case TARGET_NR_select:
3197         {
3198             struct target_sel_arg_struct *sel;
3199             target_ulong inp, outp, exp, tvp;
3200             long nsel;
3201
3202             lock_user_struct(sel, arg1, 1);
3203             nsel = tswapl(sel->n);
3204             inp = tswapl(sel->inp);
3205             outp = tswapl(sel->outp);
3206             exp = tswapl(sel->exp);
3207             tvp = tswapl(sel->tvp);
3208             unlock_user_struct(sel, arg1, 0);
3209             ret = do_select(nsel, inp, outp, exp, tvp);
3210         }
3211         break;
3212 #endif
3213     case TARGET_NR_symlink:
3214         {
3215             void *p2;
3216             p = lock_user_string(arg1);
3217             p2 = lock_user_string(arg2);
3218             ret = get_errno(symlink(p, p2));
3219             unlock_user(p2, arg2, 0);
3220             unlock_user(p, arg1, 0);
3221         }
3222         break;
3223 #ifdef TARGET_NR_oldlstat
3224     case TARGET_NR_oldlstat:
3225         goto unimplemented;
3226 #endif
3227     case TARGET_NR_readlink:
3228         {
3229             void *p2;
3230             p = lock_user_string(arg1);
3231             p2 = lock_user(arg2, arg3, 0);
3232             ret = get_errno(readlink(path(p), p2, arg3));
3233             unlock_user(p2, arg2, ret);
3234             unlock_user(p, arg1, 0);
3235         }
3236         break;
3237 #ifdef TARGET_NR_uselib
3238     case TARGET_NR_uselib:
3239         goto unimplemented;
3240 #endif
3241 #ifdef TARGET_NR_swapon
3242     case TARGET_NR_swapon:
3243         p = lock_user_string(arg1);
3244         ret = get_errno(swapon(p, arg2));
3245         unlock_user(p, arg1, 0);
3246         break;
3247 #endif
3248     case TARGET_NR_reboot:
3249         goto unimplemented;
3250 #ifdef TARGET_NR_readdir
3251     case TARGET_NR_readdir:
3252         goto unimplemented;
3253 #endif
3254 #ifdef TARGET_NR_mmap
3255     case TARGET_NR_mmap:
3256 #if defined(TARGET_I386) || defined(TARGET_ARM) || defined(TARGET_M68K)
3257         {
3258             target_ulong *v;
3259             target_ulong v1, v2, v3, v4, v5, v6;
3260             v = lock_user(arg1, 6 * sizeof(target_ulong), 1);
3261             v1 = tswapl(v[0]);
3262             v2 = tswapl(v[1]);
3263             v3 = tswapl(v[2]);
3264             v4 = tswapl(v[3]);
3265             v5 = tswapl(v[4]);
3266             v6 = tswapl(v[5]);
3267             unlock_user(v, arg1, 0);
3268             ret = get_errno(target_mmap(v1, v2, v3,
3269                                         target_to_host_bitmask(v4, mmap_flags_tbl),
3270                                         v5, v6));
3271         }
3272 #else
3273         ret = get_errno(target_mmap(arg1, arg2, arg3,
3274                                     target_to_host_bitmask(arg4, mmap_flags_tbl),
3275                                     arg5,
3276                                     arg6));
3277 #endif
3278         break;
3279 #endif
3280 #ifdef TARGET_NR_mmap2
3281     case TARGET_NR_mmap2:
3282 #if defined(TARGET_SPARC) || defined(TARGET_MIPS)
3283 #define MMAP_SHIFT 12
3284 #else
3285 #define MMAP_SHIFT TARGET_PAGE_BITS
3286 #endif
3287         ret = get_errno(target_mmap(arg1, arg2, arg3,
3288                                     target_to_host_bitmask(arg4, mmap_flags_tbl),
3289                                     arg5,
3290                                     arg6 << MMAP_SHIFT));
3291         break;
3292 #endif
3293     case TARGET_NR_munmap:
3294         ret = get_errno(target_munmap(arg1, arg2));
3295         break;
3296     case TARGET_NR_mprotect:
3297         ret = get_errno(target_mprotect(arg1, arg2, arg3));
3298         break;
3299 #ifdef TARGET_NR_mremap
3300     case TARGET_NR_mremap:
3301         ret = get_errno(target_mremap(arg1, arg2, arg3, arg4, arg5));
3302         break;
3303 #endif
3304         /* ??? msync/mlock/munlock are broken for softmmu.  */
3305 #ifdef TARGET_NR_msync
3306     case TARGET_NR_msync:
3307         ret = get_errno(msync(g2h(arg1), arg2, arg3));
3308         break;
3309 #endif
3310 #ifdef TARGET_NR_mlock
3311     case TARGET_NR_mlock:
3312         ret = get_errno(mlock(g2h(arg1), arg2));
3313         break;
3314 #endif
3315 #ifdef TARGET_NR_munlock
3316     case TARGET_NR_munlock:
3317         ret = get_errno(munlock(g2h(arg1), arg2));
3318         break;
3319 #endif
3320 #ifdef TARGET_NR_mlockall
3321     case TARGET_NR_mlockall:
3322         ret = get_errno(mlockall(arg1));
3323         break;
3324 #endif
3325 #ifdef TARGET_NR_munlockall
3326     case TARGET_NR_munlockall:
3327         ret = get_errno(munlockall());
3328         break;
3329 #endif
3330     case TARGET_NR_truncate:
3331         p = lock_user_string(arg1);
3332         ret = get_errno(truncate(p, arg2));
3333         unlock_user(p, arg1, 0);
3334         break;
3335     case TARGET_NR_ftruncate:
3336         ret = get_errno(ftruncate(arg1, arg2));
3337         break;
3338     case TARGET_NR_fchmod:
3339         ret = get_errno(fchmod(arg1, arg2));
3340         break;
3341     case TARGET_NR_getpriority:
3342         ret = get_errno(getpriority(arg1, arg2));
3343         break;
3344     case TARGET_NR_setpriority:
3345         ret = get_errno(setpriority(arg1, arg2, arg3));
3346         break;
3347 #ifdef TARGET_NR_profil
3348     case TARGET_NR_profil:
3349         goto unimplemented;
3350 #endif
3351     case TARGET_NR_statfs:
3352         p = lock_user_string(arg1);
3353         ret = get_errno(statfs(path(p), &stfs));
3354         unlock_user(p, arg1, 0);
3355     convert_statfs:
3356         if (!is_error(ret)) {
3357             struct target_statfs *target_stfs;
3358
3359             lock_user_struct(target_stfs, arg2, 0);
3360             /* ??? put_user is probably wrong.  */
3361             put_user(stfs.f_type, &target_stfs->f_type);
3362             put_user(stfs.f_bsize, &target_stfs->f_bsize);
3363             put_user(stfs.f_blocks, &target_stfs->f_blocks);
3364             put_user(stfs.f_bfree, &target_stfs->f_bfree);
3365             put_user(stfs.f_bavail, &target_stfs->f_bavail);
3366             put_user(stfs.f_files, &target_stfs->f_files);
3367             put_user(stfs.f_ffree, &target_stfs->f_ffree);
3368             put_user(stfs.f_fsid.__val[0], &target_stfs->f_fsid.val[0]);
3369             put_user(stfs.f_fsid.__val[1], &target_stfs->f_fsid.val[1]);
3370             put_user(stfs.f_namelen, &target_stfs->f_namelen);
3371             unlock_user_struct(target_stfs, arg2, 1);
3372         }
3373         break;
3374     case TARGET_NR_fstatfs:
3375         ret = get_errno(fstatfs(arg1, &stfs));
3376         goto convert_statfs;
3377 #ifdef TARGET_NR_statfs64
3378     case TARGET_NR_statfs64:
3379         p = lock_user_string(arg1);
3380         ret = get_errno(statfs(path(p), &stfs));
3381         unlock_user(p, arg1, 0);
3382     convert_statfs64:
3383         if (!is_error(ret)) {
3384             struct target_statfs64 *target_stfs;
3385
3386             lock_user_struct(target_stfs, arg3, 0);
3387             /* ??? put_user is probably wrong.  */
3388             put_user(stfs.f_type, &target_stfs->f_type);
3389             put_user(stfs.f_bsize, &target_stfs->f_bsize);
3390             put_user(stfs.f_blocks, &target_stfs->f_blocks);
3391             put_user(stfs.f_bfree, &target_stfs->f_bfree);
3392             put_user(stfs.f_bavail, &target_stfs->f_bavail);
3393             put_user(stfs.f_files, &target_stfs->f_files);
3394             put_user(stfs.f_ffree, &target_stfs->f_ffree);
3395             put_user(stfs.f_fsid.__val[0], &target_stfs->f_fsid.val[0]);
3396             put_user(stfs.f_fsid.__val[1], &target_stfs->f_fsid.val[1]);
3397             put_user(stfs.f_namelen, &target_stfs->f_namelen);
3398             unlock_user_struct(target_stfs, arg3, 0);
3399         }
3400         break;
3401     case TARGET_NR_fstatfs64:
3402         ret = get_errno(fstatfs(arg1, &stfs));
3403         goto convert_statfs64;
3404 #endif
3405 #ifdef TARGET_NR_ioperm
3406     case TARGET_NR_ioperm:
3407         goto unimplemented;
3408 #endif
3409 #ifdef TARGET_NR_socketcall
3410     case TARGET_NR_socketcall:
3411         ret = do_socketcall(arg1, arg2);
3412         break;
3413 #endif
3414 #ifdef TARGET_NR_accept
3415     case TARGET_NR_accept:
3416         ret = do_accept(arg1, arg2, arg3);
3417         break;
3418 #endif
3419 #ifdef TARGET_NR_bind
3420     case TARGET_NR_bind:
3421         ret = do_bind(arg1, arg2, arg3);
3422         break;
3423 #endif
3424 #ifdef TARGET_NR_connect
3425     case TARGET_NR_connect:
3426         ret = do_connect(arg1, arg2, arg3);
3427         break;
3428 #endif
3429 #ifdef TARGET_NR_getpeername
3430     case TARGET_NR_getpeername:
3431         ret = do_getpeername(arg1, arg2, arg3);
3432         break;
3433 #endif
3434 #ifdef TARGET_NR_getsockname
3435     case TARGET_NR_getsockname:
3436         ret = do_getsockname(arg1, arg2, arg3);
3437         break;
3438 #endif
3439 #ifdef TARGET_NR_getsockopt
3440     case TARGET_NR_getsockopt:
3441         ret = do_getsockopt(arg1, arg2, arg3, arg4, arg5);
3442         break;
3443 #endif
3444 #ifdef TARGET_NR_listen
3445     case TARGET_NR_listen:
3446         ret = get_errno(listen(arg1, arg2));
3447         break;
3448 #endif
3449 #ifdef TARGET_NR_recv
3450     case TARGET_NR_recv:
3451         ret = do_recvfrom(arg1, arg2, arg3, arg4, 0, 0);
3452         break;
3453 #endif
3454 #ifdef TARGET_NR_recvfrom
3455     case TARGET_NR_recvfrom:
3456         ret = do_recvfrom(arg1, arg2, arg3, arg4, arg5, arg6);
3457         break;
3458 #endif
3459 #ifdef TARGET_NR_recvmsg
3460     case TARGET_NR_recvmsg:
3461         ret = do_sendrecvmsg(arg1, arg2, arg3, 0);
3462         break;
3463 #endif
3464 #ifdef TARGET_NR_send
3465     case TARGET_NR_send:
3466         ret = do_sendto(arg1, arg2, arg3, arg4, 0, 0);
3467         break;
3468 #endif
3469 #ifdef TARGET_NR_sendmsg
3470     case TARGET_NR_sendmsg:
3471         ret = do_sendrecvmsg(arg1, arg2, arg3, 1);
3472         break;
3473 #endif
3474 #ifdef TARGET_NR_sendto
3475     case TARGET_NR_sendto:
3476         ret = do_sendto(arg1, arg2, arg3, arg4, arg5, arg6);
3477         break;
3478 #endif
3479 #ifdef TARGET_NR_shutdown
3480     case TARGET_NR_shutdown:
3481         ret = get_errno(shutdown(arg1, arg2));
3482         break;
3483 #endif
3484 #ifdef TARGET_NR_socket
3485     case TARGET_NR_socket:
3486         ret = do_socket(arg1, arg2, arg3);
3487         break;
3488 #endif
3489 #ifdef TARGET_NR_socketpair
3490     case TARGET_NR_socketpair:
3491         ret = do_socketpair(arg1, arg2, arg3, arg4);
3492         break;
3493 #endif
3494 #ifdef TARGET_NR_setsockopt
3495     case TARGET_NR_setsockopt:
3496         ret = do_setsockopt(arg1, arg2, arg3, arg4, (socklen_t) arg5);
3497         break;
3498 #endif
3499
3500     case TARGET_NR_syslog:
3501         p = lock_user_string(arg2);
3502         ret = get_errno(sys_syslog((int)arg1, p, (int)arg3));
3503         unlock_user(p, arg2, 0);
3504         break;
3505
3506     case TARGET_NR_setitimer:
3507         {
3508             struct itimerval value, ovalue, *pvalue;
3509
3510             if (arg2) {
3511                 pvalue = &value;
3512                 target_to_host_timeval(&pvalue->it_interval,
3513                                        arg2);
3514                 target_to_host_timeval(&pvalue->it_value,
3515                                        arg2 + sizeof(struct target_timeval));
3516             } else {
3517                 pvalue = NULL;
3518             }
3519             ret = get_errno(setitimer(arg1, pvalue, &ovalue));
3520             if (!is_error(ret) && arg3) {
3521                 host_to_target_timeval(arg3,
3522                                        &ovalue.it_interval);
3523                 host_to_target_timeval(arg3 + sizeof(struct target_timeval),
3524                                        &ovalue.it_value);
3525             }
3526         }
3527         break;
3528     case TARGET_NR_getitimer:
3529         {
3530             struct itimerval value;
3531
3532             ret = get_errno(getitimer(arg1, &value));
3533             if (!is_error(ret) && arg2) {
3534                 host_to_target_timeval(arg2,
3535                                        &value.it_interval);
3536                 host_to_target_timeval(arg2 + sizeof(struct target_timeval),
3537                                        &value.it_value);
3538             }
3539         }
3540         break;
3541     case TARGET_NR_stat:
3542         p = lock_user_string(arg1);
3543         ret = get_errno(stat(path(p), &st));
3544         unlock_user(p, arg1, 0);
3545         goto do_stat;
3546     case TARGET_NR_lstat:
3547         p = lock_user_string(arg1);
3548         ret = get_errno(lstat(path(p), &st));
3549         unlock_user(p, arg1, 0);
3550         goto do_stat;
3551     case TARGET_NR_fstat:
3552         {
3553             ret = get_errno(fstat(arg1, &st));
3554         do_stat:
3555             if (!is_error(ret)) {
3556                 struct target_stat *target_st;
3557
3558                 lock_user_struct(target_st, arg2, 0);
3559 #if defined(TARGET_MIPS) || defined(TARGET_SPARC64)
3560                 target_st->st_dev = tswap32(st.st_dev);
3561 #else
3562                 target_st->st_dev = tswap16(st.st_dev);
3563 #endif
3564                 target_st->st_ino = tswapl(st.st_ino);
3565 #if defined(TARGET_PPC) || defined(TARGET_MIPS)
3566                 target_st->st_mode = tswapl(st.st_mode); /* XXX: check this */
3567                 target_st->st_uid = tswap32(st.st_uid);
3568                 target_st->st_gid = tswap32(st.st_gid);
3569 #elif defined(TARGET_SPARC64)
3570                 target_st->st_mode = tswap32(st.st_mode);
3571                 target_st->st_uid = tswap32(st.st_uid);
3572                 target_st->st_gid = tswap32(st.st_gid);
3573 #else
3574                 target_st->st_mode = tswap16(st.st_mode);
3575                 target_st->st_uid = tswap16(st.st_uid);
3576                 target_st->st_gid = tswap16(st.st_gid);
3577 #endif
3578 #if defined(TARGET_MIPS)
3579                 /* If this is the same on PPC, then just merge w/ the above ifdef */
3580                 target_st->st_nlink = tswapl(st.st_nlink);
3581                 target_st->st_rdev = tswapl(st.st_rdev);
3582 #elif defined(TARGET_SPARC64)
3583                 target_st->st_nlink = tswap32(st.st_nlink);
3584                 target_st->st_rdev = tswap32(st.st_rdev);
3585 #else
3586                 target_st->st_nlink = tswap16(st.st_nlink);
3587                 target_st->st_rdev = tswap16(st.st_rdev);
3588 #endif
3589                 target_st->st_size = tswapl(st.st_size);
3590                 target_st->st_blksize = tswapl(st.st_blksize);
3591                 target_st->st_blocks = tswapl(st.st_blocks);
3592                 target_st->target_st_atime = tswapl(st.st_atime);
3593                 target_st->target_st_mtime = tswapl(st.st_mtime);
3594                 target_st->target_st_ctime = tswapl(st.st_ctime);
3595                 unlock_user_struct(target_st, arg2, 1);
3596             }
3597         }
3598         break;
3599 #ifdef TARGET_NR_olduname
3600     case TARGET_NR_olduname:
3601         goto unimplemented;
3602 #endif
3603 #ifdef TARGET_NR_iopl
3604     case TARGET_NR_iopl:
3605         goto unimplemented;
3606 #endif
3607     case TARGET_NR_vhangup:
3608         ret = get_errno(vhangup());
3609         break;
3610 #ifdef TARGET_NR_idle
3611     case TARGET_NR_idle:
3612         goto unimplemented;
3613 #endif
3614 #ifdef TARGET_NR_syscall
3615     case TARGET_NR_syscall:
3616         ret = do_syscall(cpu_env,arg1 & 0xffff,arg2,arg3,arg4,arg5,arg6,0);
3617         break;
3618 #endif
3619     case TARGET_NR_wait4:
3620         {
3621             int status;
3622             target_long status_ptr = arg2;
3623             struct rusage rusage, *rusage_ptr;
3624             target_ulong target_rusage = arg4;
3625             if (target_rusage)
3626                 rusage_ptr = &rusage;
3627             else
3628                 rusage_ptr = NULL;
3629             ret = get_errno(wait4(arg1, &status, arg3, rusage_ptr));
3630             if (!is_error(ret)) {
3631                 if (status_ptr)
3632                     tputl(status_ptr, status);
3633                 if (target_rusage) {
3634                     host_to_target_rusage(target_rusage, &rusage);
3635                 }
3636             }
3637         }
3638         break;
3639 #ifdef TARGET_NR_swapoff
3640     case TARGET_NR_swapoff:
3641         p = lock_user_string(arg1);
3642         ret = get_errno(swapoff(p));
3643         unlock_user(p, arg1, 0);
3644         break;
3645 #endif
3646     case TARGET_NR_sysinfo:
3647         {
3648             struct target_sysinfo *target_value;
3649             struct sysinfo value;
3650             ret = get_errno(sysinfo(&value));
3651             if (!is_error(ret) && arg1)
3652             {
3653                 /* ??? __put_user is probably wrong.  */
3654                 lock_user_struct(target_value, arg1, 0);
3655                 __put_user(value.uptime, &target_value->uptime);
3656                 __put_user(value.loads[0], &target_value->loads[0]);
3657                 __put_user(value.loads[1], &target_value->loads[1]);
3658                 __put_user(value.loads[2], &target_value->loads[2]);
3659                 __put_user(value.totalram, &target_value->totalram);
3660                 __put_user(value.freeram, &target_value->freeram);
3661                 __put_user(value.sharedram, &target_value->sharedram);
3662                 __put_user(value.bufferram, &target_value->bufferram);
3663                 __put_user(value.totalswap, &target_value->totalswap);
3664                 __put_user(value.freeswap, &target_value->freeswap);
3665                 __put_user(value.procs, &target_value->procs);
3666                 __put_user(value.totalhigh, &target_value->totalhigh);
3667                 __put_user(value.freehigh, &target_value->freehigh);
3668                 __put_user(value.mem_unit, &target_value->mem_unit);
3669                 unlock_user_struct(target_value, arg1, 1);
3670             }
3671         }
3672         break;
3673 #ifdef TARGET_NR_ipc
3674     case TARGET_NR_ipc:
3675         ret = do_ipc(arg1, arg2, arg3, arg4, arg5, arg6);
3676         break;
3677 #endif
3678     case TARGET_NR_fsync:
3679         ret = get_errno(fsync(arg1));
3680         break;
3681     case TARGET_NR_clone:
3682         ret = get_errno(do_fork(cpu_env, arg1, arg2));
3683         break;
3684 #ifdef __NR_exit_group
3685         /* new thread calls */
3686     case TARGET_NR_exit_group:
3687         gdb_exit(cpu_env, arg1);
3688         ret = get_errno(exit_group(arg1));
3689         break;
3690 #endif
3691     case TARGET_NR_setdomainname:
3692         p = lock_user_string(arg1);
3693         ret = get_errno(setdomainname(p, arg2));
3694         unlock_user(p, arg1, 0);
3695         break;
3696     case TARGET_NR_uname:
3697         /* no need to transcode because we use the linux syscall */
3698         {
3699             struct new_utsname * buf;
3700
3701             lock_user_struct(buf, arg1, 0);
3702             ret = get_errno(sys_uname(buf));
3703             if (!is_error(ret)) {
3704                 /* Overrite the native machine name with whatever is being
3705                    emulated. */
3706                 strcpy (buf->machine, UNAME_MACHINE);
3707                 /* Allow the user to override the reported release.  */
3708                 if (qemu_uname_release && *qemu_uname_release)
3709                   strcpy (buf->release, qemu_uname_release);
3710             }
3711             unlock_user_struct(buf, arg1, 1);
3712         }
3713         break;
3714 #ifdef TARGET_I386
3715     case TARGET_NR_modify_ldt:
3716         ret = get_errno(do_modify_ldt(cpu_env, arg1, arg2, arg3));
3717         break;
3718 #if !defined(TARGET_X86_64)
3719     case TARGET_NR_vm86old:
3720         goto unimplemented;
3721     case TARGET_NR_vm86:
3722         ret = do_vm86(cpu_env, arg1, arg2);
3723         break;
3724 #endif
3725 #endif
3726     case TARGET_NR_adjtimex:
3727         goto unimplemented;
3728 #ifdef TARGET_NR_create_module
3729     case TARGET_NR_create_module:
3730 #endif
3731     case TARGET_NR_init_module:
3732     case TARGET_NR_delete_module:
3733 #ifdef TARGET_NR_get_kernel_syms
3734     case TARGET_NR_get_kernel_syms:
3735 #endif
3736         goto unimplemented;
3737     case TARGET_NR_quotactl:
3738         goto unimplemented;
3739     case TARGET_NR_getpgid:
3740         ret = get_errno(getpgid(arg1));
3741         break;
3742     case TARGET_NR_fchdir:
3743         ret = get_errno(fchdir(arg1));
3744         break;
3745 #ifdef TARGET_NR_bdflush /* not on x86_64 */
3746     case TARGET_NR_bdflush:
3747         goto unimplemented;
3748 #endif
3749 #ifdef TARGET_NR_sysfs
3750     case TARGET_NR_sysfs:
3751         goto unimplemented;
3752 #endif
3753     case TARGET_NR_personality:
3754         ret = get_errno(personality(arg1));
3755         break;
3756 #ifdef TARGET_NR_afs_syscall
3757     case TARGET_NR_afs_syscall:
3758         goto unimplemented;
3759 #endif
3760 #ifdef TARGET_NR__llseek /* Not on alpha */
3761     case TARGET_NR__llseek:
3762         {
3763 #if defined (__x86_64__)
3764             ret = get_errno(lseek(arg1, ((uint64_t )arg2 << 32) | arg3, arg5));
3765             tput64(arg4, ret);
3766 #else
3767             int64_t res;
3768             ret = get_errno(_llseek(arg1, arg2, arg3, &res, arg5));
3769             tput64(arg4, res);
3770 #endif
3771         }
3772         break;
3773 #endif
3774     case TARGET_NR_getdents:
3775 #if TARGET_LONG_SIZE != 4
3776         goto unimplemented;
3777 #warning not supported
3778 #elif TARGET_LONG_SIZE == 4 && HOST_LONG_SIZE == 8
3779         {
3780             struct target_dirent *target_dirp;
3781             struct dirent *dirp;
3782             long count = arg3;
3783
3784             dirp = malloc(count);
3785             if (!dirp)
3786                 return -ENOMEM;
3787
3788             ret = get_errno(sys_getdents(arg1, dirp, count));
3789             if (!is_error(ret)) {
3790                 struct dirent *de;
3791                 struct target_dirent *tde;
3792                 int len = ret;
3793                 int reclen, treclen;
3794                 int count1, tnamelen;
3795
3796                 count1 = 0;
3797                 de = dirp;
3798                 target_dirp = lock_user(arg2, count, 0);
3799                 tde = target_dirp;
3800                 while (len > 0) {
3801                     reclen = de->d_reclen;
3802                     treclen = reclen - (2 * (sizeof(long) - sizeof(target_long)));
3803                     tde->d_reclen = tswap16(treclen);
3804                     tde->d_ino = tswapl(de->d_ino);
3805                     tde->d_off = tswapl(de->d_off);
3806                     tnamelen = treclen - (2 * sizeof(target_long) + 2);
3807                     if (tnamelen > 256)
3808                         tnamelen = 256;
3809                     /* XXX: may not be correct */
3810                     strncpy(tde->d_name, de->d_name, tnamelen);
3811                     de = (struct dirent *)((char *)de + reclen);
3812                     len -= reclen;
3813                     tde = (struct target_dirent *)((char *)tde + treclen);
3814                     count1 += treclen;
3815                 }
3816                 ret = count1;
3817             }
3818             unlock_user(target_dirp, arg2, ret);
3819             free(dirp);
3820         }
3821 #else
3822         {
3823             struct dirent *dirp;
3824             long count = arg3;
3825
3826             dirp = lock_user(arg2, count, 0);
3827             ret = get_errno(sys_getdents(arg1, dirp, count));
3828             if (!is_error(ret)) {
3829                 struct dirent *de;
3830                 int len = ret;
3831                 int reclen;
3832                 de = dirp;
3833                 while (len > 0) {
3834                     reclen = de->d_reclen;
3835                     if (reclen > len)
3836                         break;
3837                     de->d_reclen = tswap16(reclen);
3838                     tswapls(&de->d_ino);
3839                     tswapls(&de->d_off);
3840                     de = (struct dirent *)((char *)de + reclen);
3841                     len -= reclen;
3842                 }
3843             }
3844             unlock_user(dirp, arg2, ret);
3845         }
3846 #endif
3847         break;
3848 #ifdef TARGET_NR_getdents64
3849     case TARGET_NR_getdents64:
3850         {
3851             struct dirent64 *dirp;
3852             long count = arg3;
3853             dirp = lock_user(arg2, count, 0);
3854             ret = get_errno(sys_getdents64(arg1, dirp, count));
3855             if (!is_error(ret)) {
3856                 struct dirent64 *de;
3857                 int len = ret;
3858                 int reclen;
3859                 de = dirp;
3860                 while (len > 0) {
3861                     reclen = de->d_reclen;
3862                     if (reclen > len)
3863                         break;
3864                     de->d_reclen = tswap16(reclen);
3865                     tswap64s(&de->d_ino);
3866                     tswap64s(&de->d_off);
3867                     de = (struct dirent64 *)((char *)de + reclen);
3868                     len -= reclen;
3869                 }
3870             }
3871             unlock_user(dirp, arg2, ret);
3872         }
3873         break;
3874 #endif /* TARGET_NR_getdents64 */
3875 #ifdef TARGET_NR__newselect
3876     case TARGET_NR__newselect:
3877         ret = do_select(arg1, arg2, arg3, arg4, arg5);
3878         break;
3879 #endif
3880 #ifdef TARGET_NR_poll
3881     case TARGET_NR_poll:
3882         {
3883             struct target_pollfd *target_pfd;
3884             unsigned int nfds = arg2;
3885             int timeout = arg3;
3886             struct pollfd *pfd;
3887             unsigned int i;
3888
3889             target_pfd = lock_user(arg1, sizeof(struct target_pollfd) * nfds, 1);
3890             pfd = alloca(sizeof(struct pollfd) * nfds);
3891             for(i = 0; i < nfds; i++) {
3892                 pfd[i].fd = tswap32(target_pfd[i].fd);
3893                 pfd[i].events = tswap16(target_pfd[i].events);
3894             }
3895             ret = get_errno(poll(pfd, nfds, timeout));
3896             if (!is_error(ret)) {
3897                 for(i = 0; i < nfds; i++) {
3898                     target_pfd[i].revents = tswap16(pfd[i].revents);
3899                 }
3900                 ret += nfds * (sizeof(struct target_pollfd)
3901                                - sizeof(struct pollfd));
3902             }
3903             unlock_user(target_pfd, arg1, ret);
3904         }
3905         break;
3906 #endif
3907     case TARGET_NR_flock:
3908         /* NOTE: the flock constant seems to be the same for every
3909            Linux platform */
3910         ret = get_errno(flock(arg1, arg2));
3911         break;
3912     case TARGET_NR_readv:
3913         {
3914             int count = arg3;
3915             struct iovec *vec;
3916
3917             vec = alloca(count * sizeof(struct iovec));
3918             lock_iovec(vec, arg2, count, 0);
3919             ret = get_errno(readv(arg1, vec, count));
3920             unlock_iovec(vec, arg2, count, 1);
3921         }
3922         break;
3923     case TARGET_NR_writev:
3924         {
3925             int count = arg3;
3926             struct iovec *vec;
3927
3928             vec = alloca(count * sizeof(struct iovec));
3929             lock_iovec(vec, arg2, count, 1);
3930             ret = get_errno(writev(arg1, vec, count));
3931             unlock_iovec(vec, arg2, count, 0);
3932         }
3933         break;
3934     case TARGET_NR_getsid:
3935         ret = get_errno(getsid(arg1));
3936         break;
3937 #if defined(TARGET_NR_fdatasync) /* Not on alpha (osf_datasync ?) */
3938     case TARGET_NR_fdatasync:
3939         ret = get_errno(fdatasync(arg1));
3940         break;
3941 #endif
3942     case TARGET_NR__sysctl:
3943         /* We don't implement this, but ENODIR is always a safe
3944            return value. */
3945         return -ENOTDIR;
3946     case TARGET_NR_sched_setparam:
3947         {
3948             struct sched_param *target_schp;
3949             struct sched_param schp;
3950
3951             lock_user_struct(target_schp, arg2, 1);
3952             schp.sched_priority = tswap32(target_schp->sched_priority);
3953             unlock_user_struct(target_schp, arg2, 0);
3954             ret = get_errno(sched_setparam(arg1, &schp));
3955         }
3956         break;
3957     case TARGET_NR_sched_getparam:
3958         {
3959             struct sched_param *target_schp;
3960             struct sched_param schp;
3961             ret = get_errno(sched_getparam(arg1, &schp));
3962             if (!is_error(ret)) {
3963                 lock_user_struct(target_schp, arg2, 0);
3964                 target_schp->sched_priority = tswap32(schp.sched_priority);
3965                 unlock_user_struct(target_schp, arg2, 1);
3966             }
3967         }
3968         break;
3969     case TARGET_NR_sched_setscheduler:
3970         {
3971             struct sched_param *target_schp;
3972             struct sched_param schp;
3973             lock_user_struct(target_schp, arg3, 1);
3974             schp.sched_priority = tswap32(target_schp->sched_priority);
3975             unlock_user_struct(target_schp, arg3, 0);
3976             ret = get_errno(sched_setscheduler(arg1, arg2, &schp));
3977         }
3978         break;
3979     case TARGET_NR_sched_getscheduler:
3980         ret = get_errno(sched_getscheduler(arg1));
3981         break;
3982     case TARGET_NR_sched_yield:
3983         ret = get_errno(sched_yield());
3984         break;
3985     case TARGET_NR_sched_get_priority_max:
3986         ret = get_errno(sched_get_priority_max(arg1));
3987         break;
3988     case TARGET_NR_sched_get_priority_min:
3989         ret = get_errno(sched_get_priority_min(arg1));
3990         break;
3991     case TARGET_NR_sched_rr_get_interval:
3992         {
3993             struct timespec ts;
3994             ret = get_errno(sched_rr_get_interval(arg1, &ts));
3995             if (!is_error(ret)) {
3996                 host_to_target_timespec(arg2, &ts);
3997             }
3998         }
3999         break;
4000     case TARGET_NR_nanosleep:
4001         {
4002             struct timespec req, rem;
4003             target_to_host_timespec(&req, arg1);
4004             ret = get_errno(nanosleep(&req, &rem));
4005             if (is_error(ret) && arg2) {
4006                 host_to_target_timespec(arg2, &rem);
4007             }
4008         }
4009         break;
4010 #ifdef TARGET_NR_query_module
4011     case TARGET_NR_query_module:
4012         goto unimplemented;
4013 #endif
4014 #ifdef TARGET_NR_nfsservctl
4015     case TARGET_NR_nfsservctl:
4016         goto unimplemented;
4017 #endif
4018     case TARGET_NR_prctl:
4019         switch (arg1)
4020             {
4021             case PR_GET_PDEATHSIG:
4022                 {
4023                     int deathsig;
4024                     ret = get_errno(prctl(arg1, &deathsig, arg3, arg4, arg5));
4025                     if (!is_error(ret) && arg2)
4026                         tput32(arg2, deathsig);
4027                 }
4028                 break;
4029             default:
4030                 ret = get_errno(prctl(arg1, arg2, arg3, arg4, arg5));
4031                 break;
4032             }
4033         break;
4034 #ifdef TARGET_NR_pread
4035     case TARGET_NR_pread:
4036         page_unprotect_range(arg2, arg3);
4037         p = lock_user(arg2, arg3, 0);
4038         ret = get_errno(pread(arg1, p, arg3, arg4));
4039         unlock_user(p, arg2, ret);
4040         break;
4041     case TARGET_NR_pwrite:
4042         p = lock_user(arg2, arg3, 1);
4043         ret = get_errno(pwrite(arg1, p, arg3, arg4));
4044         unlock_user(p, arg2, 0);
4045         break;
4046 #endif
4047     case TARGET_NR_getcwd:
4048         p = lock_user(arg1, arg2, 0);
4049         ret = get_errno(sys_getcwd1(p, arg2));
4050         unlock_user(p, arg1, ret);
4051         break;
4052     case TARGET_NR_capget:
4053         goto unimplemented;
4054     case TARGET_NR_capset:
4055         goto unimplemented;
4056     case TARGET_NR_sigaltstack:
4057         goto unimplemented;
4058     case TARGET_NR_sendfile:
4059         goto unimplemented;
4060 #ifdef TARGET_NR_getpmsg
4061     case TARGET_NR_getpmsg:
4062         goto unimplemented;
4063 #endif
4064 #ifdef TARGET_NR_putpmsg
4065     case TARGET_NR_putpmsg:
4066         goto unimplemented;
4067 #endif
4068 #ifdef TARGET_NR_vfork
4069     case TARGET_NR_vfork:
4070         ret = get_errno(do_fork(cpu_env, CLONE_VFORK | CLONE_VM | SIGCHLD, 0));
4071         break;
4072 #endif
4073 #ifdef TARGET_NR_ugetrlimit
4074     case TARGET_NR_ugetrlimit:
4075     {
4076         struct rlimit rlim;
4077         ret = get_errno(getrlimit(arg1, &rlim));
4078         if (!is_error(ret)) {
4079             struct target_rlimit *target_rlim;
4080             lock_user_struct(target_rlim, arg2, 0);
4081             target_rlim->rlim_cur = tswapl(rlim.rlim_cur);
4082             target_rlim->rlim_max = tswapl(rlim.rlim_max);
4083             unlock_user_struct(target_rlim, arg2, 1);
4084         }
4085         break;
4086     }
4087 #endif
4088 #ifdef TARGET_NR_truncate64
4089     case TARGET_NR_truncate64:
4090         p = lock_user_string(arg1);
4091         ret = target_truncate64(cpu_env, p, arg2, arg3, arg4);
4092         unlock_user(p, arg1, 0);
4093         break;
4094 #endif
4095 #ifdef TARGET_NR_ftruncate64
4096     case TARGET_NR_ftruncate64:
4097         ret = target_ftruncate64(cpu_env, arg1, arg2, arg3, arg4);
4098         break;
4099 #endif
4100 #ifdef TARGET_NR_stat64
4101     case TARGET_NR_stat64:
4102         p = lock_user_string(arg1);
4103         ret = get_errno(stat(path(p), &st));
4104         unlock_user(p, arg1, 0);
4105         goto do_stat64;
4106 #endif
4107 #ifdef TARGET_NR_lstat64
4108     case TARGET_NR_lstat64:
4109         p = lock_user_string(arg1);
4110         ret = get_errno(lstat(path(p), &st));
4111         unlock_user(p, arg1, 0);
4112         goto do_stat64;
4113 #endif
4114 #ifdef TARGET_NR_fstat64
4115     case TARGET_NR_fstat64:
4116         {
4117             ret = get_errno(fstat(arg1, &st));
4118         do_stat64:
4119             if (!is_error(ret)) {
4120 #ifdef TARGET_ARM
4121                 if (((CPUARMState *)cpu_env)->eabi) {
4122                     struct target_eabi_stat64 *target_st;
4123                     lock_user_struct(target_st, arg2, 1);
4124                     memset(target_st, 0, sizeof(struct target_eabi_stat64));
4125                     /* put_user is probably wrong.  */
4126                     put_user(st.st_dev, &target_st->st_dev);
4127                     put_user(st.st_ino, &target_st->st_ino);
4128 #ifdef TARGET_STAT64_HAS_BROKEN_ST_INO
4129                     put_user(st.st_ino, &target_st->__st_ino);
4130 #endif
4131                     put_user(st.st_mode, &target_st->st_mode);
4132                     put_user(st.st_nlink, &target_st->st_nlink);
4133                     put_user(st.st_uid, &target_st->st_uid);
4134                     put_user(st.st_gid, &target_st->st_gid);
4135                     put_user(st.st_rdev, &target_st->st_rdev);
4136                     /* XXX: better use of kernel struct */
4137                     put_user(st.st_size, &target_st->st_size);
4138                     put_user(st.st_blksize, &target_st->st_blksize);
4139                     put_user(st.st_blocks, &target_st->st_blocks);
4140                     put_user(st.st_atime, &target_st->target_st_atime);
4141                     put_user(st.st_mtime, &target_st->target_st_mtime);
4142                     put_user(st.st_ctime, &target_st->target_st_ctime);
4143                     unlock_user_struct(target_st, arg2, 0);
4144                 } else
4145 #endif
4146                 {
4147                     struct target_stat64 *target_st;
4148                     lock_user_struct(target_st, arg2, 1);
4149                     memset(target_st, 0, sizeof(struct target_stat64));
4150                     /* ??? put_user is probably wrong.  */
4151                     put_user(st.st_dev, &target_st->st_dev);
4152                     put_user(st.st_ino, &target_st->st_ino);
4153 #ifdef TARGET_STAT64_HAS_BROKEN_ST_INO
4154                     put_user(st.st_ino, &target_st->__st_ino);
4155 #endif
4156                     put_user(st.st_mode, &target_st->st_mode);
4157                     put_user(st.st_nlink, &target_st->st_nlink);
4158                     put_user(st.st_uid, &target_st->st_uid);
4159                     put_user(st.st_gid, &target_st->st_gid);
4160                     put_user(st.st_rdev, &target_st->st_rdev);
4161                     /* XXX: better use of kernel struct */
4162                     put_user(st.st_size, &target_st->st_size);
4163                     put_user(st.st_blksize, &target_st->st_blksize);
4164                     put_user(st.st_blocks, &target_st->st_blocks);
4165                     put_user(st.st_atime, &target_st->target_st_atime);
4166                     put_user(st.st_mtime, &target_st->target_st_mtime);
4167                     put_user(st.st_ctime, &target_st->target_st_ctime);
4168                     unlock_user_struct(target_st, arg2, 0);
4169                 }
4170             }
4171         }
4172         break;
4173 #endif
4174 #ifdef USE_UID16
4175     case TARGET_NR_lchown:
4176         p = lock_user_string(arg1);
4177         ret = get_errno(lchown(p, low2highuid(arg2), low2highgid(arg3)));
4178         unlock_user(p, arg1, 0);
4179         break;
4180     case TARGET_NR_getuid:
4181         ret = get_errno(high2lowuid(getuid()));
4182         break;
4183     case TARGET_NR_getgid:
4184         ret = get_errno(high2lowgid(getgid()));
4185         break;
4186     case TARGET_NR_geteuid:
4187         ret = get_errno(high2lowuid(geteuid()));
4188         break;
4189     case TARGET_NR_getegid:
4190         ret = get_errno(high2lowgid(getegid()));
4191         break;
4192     case TARGET_NR_setreuid:
4193         ret = get_errno(setreuid(low2highuid(arg1), low2highuid(arg2)));
4194         break;
4195     case TARGET_NR_setregid:
4196         ret = get_errno(setregid(low2highgid(arg1), low2highgid(arg2)));
4197         break;
4198     case TARGET_NR_getgroups:
4199         {
4200             int gidsetsize = arg1;
4201             uint16_t *target_grouplist;
4202             gid_t *grouplist;
4203             int i;
4204
4205             grouplist = alloca(gidsetsize * sizeof(gid_t));
4206             ret = get_errno(getgroups(gidsetsize, grouplist));
4207             if (!is_error(ret)) {
4208                 target_grouplist = lock_user(arg2, gidsetsize * 2, 0);
4209                 for(i = 0;i < gidsetsize; i++)
4210                     target_grouplist[i] = tswap16(grouplist[i]);
4211                 unlock_user(target_grouplist, arg2, gidsetsize * 2);
4212             }
4213         }
4214         break;
4215     case TARGET_NR_setgroups:
4216         {
4217             int gidsetsize = arg1;
4218             uint16_t *target_grouplist;
4219             gid_t *grouplist;
4220             int i;
4221
4222             grouplist = alloca(gidsetsize * sizeof(gid_t));
4223             target_grouplist = lock_user(arg2, gidsetsize * 2, 1);
4224             for(i = 0;i < gidsetsize; i++)
4225                 grouplist[i] = tswap16(target_grouplist[i]);
4226             unlock_user(target_grouplist, arg2, 0);
4227             ret = get_errno(setgroups(gidsetsize, grouplist));
4228         }
4229         break;
4230     case TARGET_NR_fchown:
4231         ret = get_errno(fchown(arg1, low2highuid(arg2), low2highgid(arg3)));
4232         break;
4233 #ifdef TARGET_NR_setresuid
4234     case TARGET_NR_setresuid:
4235         ret = get_errno(setresuid(low2highuid(arg1),
4236                                   low2highuid(arg2),
4237                                   low2highuid(arg3)));
4238         break;
4239 #endif
4240 #ifdef TARGET_NR_getresuid
4241     case TARGET_NR_getresuid:
4242         {
4243             uid_t ruid, euid, suid;
4244             ret = get_errno(getresuid(&ruid, &euid, &suid));
4245             if (!is_error(ret)) {
4246                 tput16(arg1, tswap16(high2lowuid(ruid)));
4247                 tput16(arg2, tswap16(high2lowuid(euid)));
4248                 tput16(arg3, tswap16(high2lowuid(suid)));
4249             }
4250         }
4251         break;
4252 #endif
4253 #ifdef TARGET_NR_getresgid
4254     case TARGET_NR_setresgid:
4255         ret = get_errno(setresgid(low2highgid(arg1),
4256                                   low2highgid(arg2),
4257                                   low2highgid(arg3)));
4258         break;
4259 #endif
4260 #ifdef TARGET_NR_getresgid
4261     case TARGET_NR_getresgid:
4262         {
4263             gid_t rgid, egid, sgid;
4264             ret = get_errno(getresgid(&rgid, &egid, &sgid));
4265             if (!is_error(ret)) {
4266                 tput16(arg1, tswap16(high2lowgid(rgid)));
4267                 tput16(arg2, tswap16(high2lowgid(egid)));
4268                 tput16(arg3, tswap16(high2lowgid(sgid)));
4269             }
4270         }
4271         break;
4272 #endif
4273     case TARGET_NR_chown:
4274         p = lock_user_string(arg1);
4275         ret = get_errno(chown(p, low2highuid(arg2), low2highgid(arg3)));
4276         unlock_user(p, arg1, 0);
4277         break;
4278     case TARGET_NR_setuid:
4279         ret = get_errno(setuid(low2highuid(arg1)));
4280         break;
4281     case TARGET_NR_setgid:
4282         ret = get_errno(setgid(low2highgid(arg1)));
4283         break;
4284     case TARGET_NR_setfsuid:
4285         ret = get_errno(setfsuid(arg1));
4286         break;
4287     case TARGET_NR_setfsgid:
4288         ret = get_errno(setfsgid(arg1));
4289         break;
4290 #endif /* USE_UID16 */
4291
4292 #ifdef TARGET_NR_lchown32
4293     case TARGET_NR_lchown32:
4294         p = lock_user_string(arg1);
4295         ret = get_errno(lchown(p, arg2, arg3));
4296         unlock_user(p, arg1, 0);
4297         break;
4298 #endif
4299 #ifdef TARGET_NR_getuid32
4300     case TARGET_NR_getuid32:
4301         ret = get_errno(getuid());
4302         break;
4303 #endif
4304 #ifdef TARGET_NR_getgid32
4305     case TARGET_NR_getgid32:
4306         ret = get_errno(getgid());
4307         break;
4308 #endif
4309 #ifdef TARGET_NR_geteuid32
4310     case TARGET_NR_geteuid32:
4311         ret = get_errno(geteuid());
4312         break;
4313 #endif
4314 #ifdef TARGET_NR_getegid32
4315     case TARGET_NR_getegid32:
4316         ret = get_errno(getegid());
4317         break;
4318 #endif
4319 #ifdef TARGET_NR_setreuid32
4320     case TARGET_NR_setreuid32:
4321         ret = get_errno(setreuid(arg1, arg2));
4322         break;
4323 #endif
4324 #ifdef TARGET_NR_setregid32
4325     case TARGET_NR_setregid32:
4326         ret = get_errno(setregid(arg1, arg2));
4327         break;
4328 #endif
4329 #ifdef TARGET_NR_getgroups32
4330     case TARGET_NR_getgroups32:
4331         {
4332             int gidsetsize = arg1;
4333             uint32_t *target_grouplist;
4334             gid_t *grouplist;
4335             int i;
4336
4337             grouplist = alloca(gidsetsize * sizeof(gid_t));
4338             ret = get_errno(getgroups(gidsetsize, grouplist));
4339             if (!is_error(ret)) {
4340                 target_grouplist = lock_user(arg2, gidsetsize * 4, 0);
4341                 for(i = 0;i < gidsetsize; i++)
4342                     target_grouplist[i] = tswap32(grouplist[i]);
4343                 unlock_user(target_grouplist, arg2, gidsetsize * 4);
4344             }
4345         }
4346         break;
4347 #endif
4348 #ifdef TARGET_NR_setgroups32
4349     case TARGET_NR_setgroups32:
4350         {
4351             int gidsetsize = arg1;
4352             uint32_t *target_grouplist;
4353             gid_t *grouplist;
4354             int i;
4355
4356             grouplist = alloca(gidsetsize * sizeof(gid_t));
4357             target_grouplist = lock_user(arg2, gidsetsize * 4, 1);
4358             for(i = 0;i < gidsetsize; i++)
4359                 grouplist[i] = tswap32(target_grouplist[i]);
4360             unlock_user(target_grouplist, arg2, 0);
4361             ret = get_errno(setgroups(gidsetsize, grouplist));
4362         }
4363         break;
4364 #endif
4365 #ifdef TARGET_NR_fchown32
4366     case TARGET_NR_fchown32:
4367         ret = get_errno(fchown(arg1, arg2, arg3));
4368         break;
4369 #endif
4370 #ifdef TARGET_NR_setresuid32
4371     case TARGET_NR_setresuid32:
4372         ret = get_errno(setresuid(arg1, arg2, arg3));
4373         break;
4374 #endif
4375 #ifdef TARGET_NR_getresuid32
4376     case TARGET_NR_getresuid32:
4377         {
4378             uid_t ruid, euid, suid;
4379             ret = get_errno(getresuid(&ruid, &euid, &suid));
4380             if (!is_error(ret)) {
4381                 tput32(arg1, tswap32(ruid));
4382                 tput32(arg2, tswap32(euid));
4383                 tput32(arg3, tswap32(suid));
4384             }
4385         }
4386         break;
4387 #endif
4388 #ifdef TARGET_NR_setresgid32
4389     case TARGET_NR_setresgid32:
4390         ret = get_errno(setresgid(arg1, arg2, arg3));
4391         break;
4392 #endif
4393 #ifdef TARGET_NR_getresgid32
4394     case TARGET_NR_getresgid32:
4395         {
4396             gid_t rgid, egid, sgid;
4397             ret = get_errno(getresgid(&rgid, &egid, &sgid));
4398             if (!is_error(ret)) {
4399                 tput32(arg1, tswap32(rgid));
4400                 tput32(arg2, tswap32(egid));
4401                 tput32(arg3, tswap32(sgid));
4402             }
4403         }
4404         break;
4405 #endif
4406 #ifdef TARGET_NR_chown32
4407     case TARGET_NR_chown32:
4408         p = lock_user_string(arg1);
4409         ret = get_errno(chown(p, arg2, arg3));
4410         unlock_user(p, arg1, 0);
4411         break;
4412 #endif
4413 #ifdef TARGET_NR_setuid32
4414     case TARGET_NR_setuid32:
4415         ret = get_errno(setuid(arg1));
4416         break;
4417 #endif
4418 #ifdef TARGET_NR_setgid32
4419     case TARGET_NR_setgid32:
4420         ret = get_errno(setgid(arg1));
4421         break;
4422 #endif
4423 #ifdef TARGET_NR_setfsuid32
4424     case TARGET_NR_setfsuid32:
4425         ret = get_errno(setfsuid(arg1));
4426         break;
4427 #endif
4428 #ifdef TARGET_NR_setfsgid32
4429     case TARGET_NR_setfsgid32:
4430         ret = get_errno(setfsgid(arg1));
4431         break;
4432 #endif
4433
4434     case TARGET_NR_pivot_root:
4435         goto unimplemented;
4436 #ifdef TARGET_NR_mincore
4437     case TARGET_NR_mincore:
4438         goto unimplemented;
4439 #endif
4440 #ifdef TARGET_NR_madvise
4441     case TARGET_NR_madvise:
4442         /* A straight passthrough may not be safe because qemu sometimes
4443            turns private flie-backed mappings into anonymous mappings.
4444            This will break MADV_DONTNEED.
4445            This is a hint, so ignoring and returning success is ok.  */
4446         ret = get_errno(0);
4447         break;
4448 #endif
4449 #if TARGET_LONG_BITS == 32
4450     case TARGET_NR_fcntl64:
4451     {
4452         int cmd;
4453         struct flock64 fl;
4454         struct target_flock64 *target_fl;
4455 #ifdef TARGET_ARM
4456         struct target_eabi_flock64 *target_efl;
4457 #endif
4458
4459         switch(arg2){
4460         case TARGET_F_GETLK64:
4461             cmd = F_GETLK64;
4462             break;
4463         case TARGET_F_SETLK64:
4464             cmd = F_SETLK64;
4465             break;
4466         case TARGET_F_SETLKW64:
4467             cmd = F_SETLK64;
4468             break;
4469         default:
4470             cmd = arg2;
4471             break;
4472         }
4473
4474         switch(arg2) {
4475         case TARGET_F_GETLK64:
4476 #ifdef TARGET_ARM
4477             if (((CPUARMState *)cpu_env)->eabi) {
4478                 lock_user_struct(target_efl, arg3, 1);
4479                 fl.l_type = tswap16(target_efl->l_type);
4480                 fl.l_whence = tswap16(target_efl->l_whence);
4481                 fl.l_start = tswap64(target_efl->l_start);
4482                 fl.l_len = tswap64(target_efl->l_len);
4483                 fl.l_pid = tswapl(target_efl->l_pid);
4484                 unlock_user_struct(target_efl, arg3, 0);
4485             } else
4486 #endif
4487             {
4488                 lock_user_struct(target_fl, arg3, 1);
4489                 fl.l_type = tswap16(target_fl->l_type);
4490                 fl.l_whence = tswap16(target_fl->l_whence);
4491                 fl.l_start = tswap64(target_fl->l_start);
4492                 fl.l_len = tswap64(target_fl->l_len);
4493                 fl.l_pid = tswapl(target_fl->l_pid);
4494                 unlock_user_struct(target_fl, arg3, 0);
4495             }
4496             ret = get_errno(fcntl(arg1, cmd, &fl));
4497             if (ret == 0) {
4498 #ifdef TARGET_ARM
4499                 if (((CPUARMState *)cpu_env)->eabi) {
4500                     lock_user_struct(target_efl, arg3, 0);
4501                     target_efl->l_type = tswap16(fl.l_type);
4502                     target_efl->l_whence = tswap16(fl.l_whence);
4503                     target_efl->l_start = tswap64(fl.l_start);
4504                     target_efl->l_len = tswap64(fl.l_len);
4505                     target_efl->l_pid = tswapl(fl.l_pid);
4506                     unlock_user_struct(target_efl, arg3, 1);
4507                 } else
4508 #endif
4509                 {
4510                     lock_user_struct(target_fl, arg3, 0);
4511                     target_fl->l_type = tswap16(fl.l_type);
4512                     target_fl->l_whence = tswap16(fl.l_whence);
4513                     target_fl->l_start = tswap64(fl.l_start);
4514                     target_fl->l_len = tswap64(fl.l_len);
4515                     target_fl->l_pid = tswapl(fl.l_pid);
4516                     unlock_user_struct(target_fl, arg3, 1);
4517                 }
4518             }
4519             break;
4520
4521         case TARGET_F_SETLK64:
4522         case TARGET_F_SETLKW64:
4523 #ifdef TARGET_ARM
4524             if (((CPUARMState *)cpu_env)->eabi) {
4525                 lock_user_struct(target_efl, arg3, 1);
4526                 fl.l_type = tswap16(target_efl->l_type);
4527                 fl.l_whence = tswap16(target_efl->l_whence);
4528                 fl.l_start = tswap64(target_efl->l_start);
4529                 fl.l_len = tswap64(target_efl->l_len);
4530                 fl.l_pid = tswapl(target_efl->l_pid);
4531                 unlock_user_struct(target_efl, arg3, 0);
4532             } else
4533 #endif
4534             {
4535                 lock_user_struct(target_fl, arg3, 1);
4536                 fl.l_type = tswap16(target_fl->l_type);
4537                 fl.l_whence = tswap16(target_fl->l_whence);
4538                 fl.l_start = tswap64(target_fl->l_start);
4539                 fl.l_len = tswap64(target_fl->l_len);
4540                 fl.l_pid = tswapl(target_fl->l_pid);
4541                 unlock_user_struct(target_fl, arg3, 0);
4542             }
4543             ret = get_errno(fcntl(arg1, cmd, &fl));
4544             break;
4545         default:
4546             ret = get_errno(do_fcntl(arg1, cmd, arg3));
4547             break;
4548         }
4549         break;
4550     }
4551 #endif
4552 #ifdef TARGET_NR_cacheflush
4553     case TARGET_NR_cacheflush:
4554         /* self-modifying code is handled automatically, so nothing needed */
4555         ret = 0;
4556         break;
4557 #endif
4558 #ifdef TARGET_NR_security
4559     case TARGET_NR_security:
4560         goto unimplemented;
4561 #endif
4562 #ifdef TARGET_NR_getpagesize
4563     case TARGET_NR_getpagesize:
4564         ret = TARGET_PAGE_SIZE;
4565         break;
4566 #endif
4567     case TARGET_NR_gettid:
4568         ret = get_errno(gettid());
4569         break;
4570 #ifdef TARGET_NR_readahead
4571     case TARGET_NR_readahead:
4572         goto unimplemented;
4573 #endif
4574 #ifdef TARGET_NR_setxattr
4575     case TARGET_NR_setxattr:
4576     case TARGET_NR_lsetxattr:
4577     case TARGET_NR_fsetxattr:
4578     case TARGET_NR_getxattr:
4579     case TARGET_NR_lgetxattr:
4580     case TARGET_NR_fgetxattr:
4581     case TARGET_NR_listxattr:
4582     case TARGET_NR_llistxattr:
4583     case TARGET_NR_flistxattr:
4584     case TARGET_NR_removexattr:
4585     case TARGET_NR_lremovexattr:
4586     case TARGET_NR_fremovexattr:
4587         goto unimplemented_nowarn;
4588 #endif
4589 #ifdef TARGET_NR_set_thread_area
4590     case TARGET_NR_set_thread_area:
4591 #ifdef TARGET_MIPS
4592       ((CPUMIPSState *) cpu_env)->tls_value = arg1;
4593       ret = 0;
4594       break;
4595 #else
4596       goto unimplemented_nowarn;
4597 #endif
4598 #endif
4599 #ifdef TARGET_NR_get_thread_area
4600     case TARGET_NR_get_thread_area:
4601         goto unimplemented_nowarn;
4602 #endif
4603 #ifdef TARGET_NR_getdomainname
4604     case TARGET_NR_getdomainname:
4605         goto unimplemented_nowarn;
4606 #endif
4607
4608 #ifdef TARGET_NR_clock_gettime
4609     case TARGET_NR_clock_gettime:
4610     {
4611         struct timespec ts;
4612         ret = get_errno(clock_gettime(arg1, &ts));
4613         if (!is_error(ret)) {
4614             host_to_target_timespec(arg2, &ts);
4615         }
4616         break;
4617     }
4618 #endif
4619 #ifdef TARGET_NR_clock_getres
4620     case TARGET_NR_clock_getres:
4621     {
4622         struct timespec ts;
4623         ret = get_errno(clock_getres(arg1, &ts));
4624         if (!is_error(ret)) {
4625             host_to_target_timespec(arg2, &ts);
4626         }
4627         break;
4628     }
4629 #endif
4630
4631 #if defined(TARGET_NR_set_tid_address) && defined(__NR_set_tid_address)
4632     case TARGET_NR_set_tid_address:
4633       ret = get_errno(set_tid_address((int *) arg1));
4634       break;
4635 #endif
4636
4637 #ifdef TARGET_NR_tkill
4638     case TARGET_NR_tkill:
4639         ret = get_errno(sys_tkill((int)arg1, (int)arg2));
4640         break;
4641 #endif
4642
4643 #ifdef TARGET_NR_tgkill
4644     case TARGET_NR_tgkill:
4645         ret = get_errno(sys_tgkill((int)arg1, (int)arg2, (int)arg3));
4646         break;
4647 #endif
4648
4649 #ifdef TARGET_NR_set_robust_list
4650     case TARGET_NR_set_robust_list:
4651         goto unimplemented_nowarn;
4652 #endif
4653
4654     default:
4655     unimplemented:
4656         gemu_log("qemu: Unsupported syscall: %d\n", num);
4657 #if defined(TARGET_NR_setxattr) || defined(TARGET_NR_get_thread_area) || defined(TARGET_NR_getdomainname) || defined(TARGET_NR_set_robust_list)
4658     unimplemented_nowarn:
4659 #endif
4660         ret = -ENOSYS;
4661         break;
4662     }
4663  fail:
4664 #ifdef DEBUG
4665     gemu_log(" = %ld\n", ret);
4666 #endif
4667     return ret;
4668 }
4669