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_openat __NR_openat
 146 #define __NR_sys_rt_sigqueueinfo __NR_rt_sigqueueinfo
 147 #define __NR_sys_syslog __NR_syslog
 148 #define __NR_sys_tgkill __NR_tgkill
 149 #define __NR_sys_tkill __NR_tkill
 150
 151 #if defined(__alpha__) || defined (__ia64__) || defined(__x86_64__)
 152 #define __NR__llseek __NR_lseek
 153 #endif
 154
 155 #ifdef __NR_gettid
 156 _syscall0(int, gettid)
 157 #else
 158 static int gettid(void) {
 159     return -ENOSYS;
 160 }
 161 #endif
 162 _syscall1(int,sys_uname,struct new_utsname *,buf)
 163 _syscall2(int,sys_getcwd1,char *,buf,size_t,size)
 164 _syscall3(int, sys_getdents, uint, fd, struct dirent *, dirp, uint, count);
 165 #if defined(TARGET_NR_getdents64) && defined(__NR_getdents64)
 166 _syscall3(int, sys_getdents64, uint, fd, struct dirent64 *, dirp, uint, count);
 167 #endif
 168 _syscall5(int, _llseek,  uint,  fd, ulong, hi, ulong, lo,
 169           loff_t *, res, uint, wh);
 170 #if defined(TARGET_NR_openat) && defined(__NR_openat)
 171 _syscall4(int,sys_openat,int,dirfd,const char *,pathname,int,flags,mode_t,mode)
 172 #endif
 173 _syscall3(int,sys_rt_sigqueueinfo,int,pid,int,sig,siginfo_t *,uinfo)
 174 _syscall3(int,sys_syslog,int,type,char*,bufp,int,len)
 175 #if defined(TARGET_NR_tgkill) && defined(__NR_tgkill)
 176 _syscall3(int,sys_tgkill,int,tgid,int,pid,int,sig)
 177 #endif
 178 #if defined(TARGET_NR_tkill) && defined(__NR_tkill)
 179 _syscall2(int,sys_tkill,int,tid,int,sig)
 180 #endif
 181 #ifdef __NR_exit_group
 182 _syscall1(int,exit_group,int,error_code)
 183 #endif
 184 #if defined(TARGET_NR_set_tid_address) && defined(__NR_set_tid_address)
 185 _syscall1(int,set_tid_address,int *,tidptr)
 186 #endif
 187
 188 extern int personality(int);
 189 extern int flock(int, int);
 190 extern int setfsuid(int);
 191 extern int setfsgid(int);
 192 extern int setresuid(uid_t, uid_t, uid_t);
 193 extern int getresuid(uid_t *, uid_t *, uid_t *);
 194 extern int setresgid(gid_t, gid_t, gid_t);
 195 extern int getresgid(gid_t *, gid_t *, gid_t *);
 196 extern int setgroups(int, gid_t *);
 197
 198 /*
 199  * This list is the union of errno values overridden in asm-<arch>/errno.h
 200  * minus the errnos that are not actually generic to all archs.
 201  */
 202 static uint16_t host_to_target_errno_table[1200] = {
 203     [EIDRM]             = TARGET_EIDRM,
 204     [ECHRNG]            = TARGET_ECHRNG,
 205     [EL2NSYNC]          = TARGET_EL2NSYNC,
 206     [EL3HLT]            = TARGET_EL3HLT,
 207     [EL3RST]            = TARGET_EL3RST,
 208     [ELNRNG]            = TARGET_ELNRNG,
 209     [EUNATCH]           = TARGET_EUNATCH,
 210     [ENOCSI]            = TARGET_ENOCSI,
 211     [EL2HLT]            = TARGET_EL2HLT,
 212     [EDEADLK]           = TARGET_EDEADLK,
 213     [ENOLCK]            = TARGET_ENOLCK,
 214     [EBADE]             = TARGET_EBADE,
 215     [EBADR]             = TARGET_EBADR,
 216     [EXFULL]            = TARGET_EXFULL,
 217     [ENOANO]            = TARGET_ENOANO,
 218     [EBADRQC]           = TARGET_EBADRQC,
 219     [EBADSLT]           = TARGET_EBADSLT,
 220     [EBFONT]            = TARGET_EBFONT,
 221     [ENOSTR]            = TARGET_ENOSTR,
 222     [ENODATA]           = TARGET_ENODATA,
 223     [ETIME]             = TARGET_ETIME,
 224     [ENOSR]             = TARGET_ENOSR,
 225     [ENONET]            = TARGET_ENONET,
 226     [ENOPKG]            = TARGET_ENOPKG,
 227     [EREMOTE]           = TARGET_EREMOTE,
 228     [ENOLINK]           = TARGET_ENOLINK,
 229     [EADV]              = TARGET_EADV,
 230     [ESRMNT]            = TARGET_ESRMNT,
 231     [ECOMM]             = TARGET_ECOMM,
 232     [EPROTO]            = TARGET_EPROTO,
 233     [EDOTDOT]           = TARGET_EDOTDOT,
 234     [EMULTIHOP]         = TARGET_EMULTIHOP,
 235     [EBADMSG]           = TARGET_EBADMSG,
 236     [ENAMETOOLONG]      = TARGET_ENAMETOOLONG,
 237     [EOVERFLOW]         = TARGET_EOVERFLOW,
 238     [ENOTUNIQ]          = TARGET_ENOTUNIQ,
 239     [EBADFD]            = TARGET_EBADFD,
 240     [EREMCHG]           = TARGET_EREMCHG,
 241     [ELIBACC]           = TARGET_ELIBACC,
 242     [ELIBBAD]           = TARGET_ELIBBAD,
 243     [ELIBSCN]           = TARGET_ELIBSCN,
 244     [ELIBMAX]           = TARGET_ELIBMAX,
 245     [ELIBEXEC]          = TARGET_ELIBEXEC,
 246     [EILSEQ]            = TARGET_EILSEQ,
 247     [ENOSYS]            = TARGET_ENOSYS,
 248     [ELOOP]             = TARGET_ELOOP,
 249     [ERESTART]          = TARGET_ERESTART,
 250     [ESTRPIPE]          = TARGET_ESTRPIPE,
 251     [ENOTEMPTY]         = TARGET_ENOTEMPTY,
 252     [EUSERS]            = TARGET_EUSERS,
 253     [ENOTSOCK]          = TARGET_ENOTSOCK,
 254     [EDESTADDRREQ]      = TARGET_EDESTADDRREQ,
 255     [EMSGSIZE]          = TARGET_EMSGSIZE,
 256     [EPROTOTYPE]        = TARGET_EPROTOTYPE,
 257     [ENOPROTOOPT]       = TARGET_ENOPROTOOPT,
 258     [EPROTONOSUPPORT]   = TARGET_EPROTONOSUPPORT,
 259     [ESOCKTNOSUPPORT]   = TARGET_ESOCKTNOSUPPORT,
 260     [EOPNOTSUPP]        = TARGET_EOPNOTSUPP,
 261     [EPFNOSUPPORT]      = TARGET_EPFNOSUPPORT,
 262     [EAFNOSUPPORT]      = TARGET_EAFNOSUPPORT,
 263     [EADDRINUSE]        = TARGET_EADDRINUSE,
 264     [EADDRNOTAVAIL]     = TARGET_EADDRNOTAVAIL,
 265     [ENETDOWN]          = TARGET_ENETDOWN,
 266     [ENETUNREACH]       = TARGET_ENETUNREACH,
 267     [ENETRESET]         = TARGET_ENETRESET,
 268     [ECONNABORTED]      = TARGET_ECONNABORTED,
 269     [ECONNRESET]        = TARGET_ECONNRESET,
 270     [ENOBUFS]           = TARGET_ENOBUFS,
 271     [EISCONN]           = TARGET_EISCONN,
 272     [ENOTCONN]          = TARGET_ENOTCONN,
 273     [EUCLEAN]           = TARGET_EUCLEAN,
 274     [ENOTNAM]           = TARGET_ENOTNAM,
 275     [ENAVAIL]           = TARGET_ENAVAIL,
 276     [EISNAM]            = TARGET_EISNAM,
 277     [EREMOTEIO]         = TARGET_EREMOTEIO,
 278     [ESHUTDOWN]         = TARGET_ESHUTDOWN,
 279     [ETOOMANYREFS]      = TARGET_ETOOMANYREFS,
 280     [ETIMEDOUT]         = TARGET_ETIMEDOUT,
 281     [ECONNREFUSED]      = TARGET_ECONNREFUSED,
 282     [EHOSTDOWN]         = TARGET_EHOSTDOWN,
 283     [EHOSTUNREACH]      = TARGET_EHOSTUNREACH,
 284     [EALREADY]          = TARGET_EALREADY,
 285     [EINPROGRESS]       = TARGET_EINPROGRESS,
 286     [ESTALE]            = TARGET_ESTALE,
 287     [ECANCELED]         = TARGET_ECANCELED,
 288     [ENOMEDIUM]         = TARGET_ENOMEDIUM,
 289     [EMEDIUMTYPE]       = TARGET_EMEDIUMTYPE,
 290 #ifdef ENOKEY
 291     [ENOKEY]            = TARGET_ENOKEY,
 292 #endif
 293 #ifdef EKEYEXPIRED
 294     [EKEYEXPIRED]       = TARGET_EKEYEXPIRED,
 295 #endif
 296 #ifdef EKEYREVOKED
 297     [EKEYREVOKED]       = TARGET_EKEYREVOKED,
 298 #endif
 299 #ifdef EKEYREJECTED
 300     [EKEYREJECTED]      = TARGET_EKEYREJECTED,
 301 #endif
 302 #ifdef EOWNERDEAD
 303     [EOWNERDEAD]        = TARGET_EOWNERDEAD,
 304 #endif
 305 #ifdef ENOTRECOVERABLE
 306     [ENOTRECOVERABLE]   = TARGET_ENOTRECOVERABLE,
 307 #endif
 308         };
 309
 310 static inline int host_to_target_errno(int err)
 311 {
 312     if(host_to_target_errno_table[err])
 313         return host_to_target_errno_table[err];
 314     return err;
 315 }
 316
 317 static inline long get_errno(long ret)
 318 {
 319     if (ret == -1)
 320         return -host_to_target_errno(errno);
 321     else
 322         return ret;
 323 }
 324
 325 static inline int is_error(long ret)
 326 {
 327     return (unsigned long)ret >= (unsigned long)(-4096);
 328 }
 329
 330 static target_ulong target_brk;
 331 static target_ulong target_original_brk;
 332
 333 void target_set_brk(target_ulong new_brk)
 334 {
 335     target_original_brk = target_brk = HOST_PAGE_ALIGN(new_brk);
 336 }
 337
 338 long do_brk(target_ulong new_brk)
 339 {
 340     target_ulong brk_page;
 341     long mapped_addr;
 342     int new_alloc_size;
 343
 344     if (!new_brk)
 345         return target_brk;
 346     if (new_brk < target_original_brk)
 347         return -ENOMEM;
 348
 349     brk_page = HOST_PAGE_ALIGN(target_brk);
 350
 351     /* If the new brk is less than this, set it and we're done... */
 352     if (new_brk < brk_page) {
 353         target_brk = new_brk;
 354         return target_brk;
 355     }
 356
 357     /* We need to allocate more memory after the brk... */
 358     new_alloc_size = HOST_PAGE_ALIGN(new_brk - brk_page + 1);
 359     mapped_addr = get_errno(target_mmap(brk_page, new_alloc_size,
 360                                         PROT_READ|PROT_WRITE,
 361                                         MAP_ANON|MAP_FIXED|MAP_PRIVATE, 0, 0));
 362     if (is_error(mapped_addr)) {
 363         return mapped_addr;
 364     } else {
 365         target_brk = new_brk;
 366         return target_brk;
 367     }
 368 }
 369
 370 static inline fd_set *target_to_host_fds(fd_set *fds,
 371                                          target_long *target_fds, int n)
 372 {
 373 #if !defined(BSWAP_NEEDED) && !defined(WORDS_BIGENDIAN)
 374     return (fd_set *)target_fds;
 375 #else
 376     int i, b;
 377     if (target_fds) {
 378         FD_ZERO(fds);
 379         for(i = 0;i < n; i++) {
 380             b = (tswapl(target_fds[i / TARGET_LONG_BITS]) >>
 381                  (i & (TARGET_LONG_BITS - 1))) & 1;
 382             if (b)
 383                 FD_SET(i, fds);
 384         }
 385         return fds;
 386     } else {
 387         return NULL;
 388     }
 389 #endif
 390 }
 391
 392 static inline void host_to_target_fds(target_long *target_fds,
 393                                       fd_set *fds, int n)
 394 {
 395 #if !defined(BSWAP_NEEDED) && !defined(WORDS_BIGENDIAN)
 396     /* nothing to do */
 397 #else
 398     int i, nw, j, k;
 399     target_long v;
 400
 401     if (target_fds) {
 402         nw = (n + TARGET_LONG_BITS - 1) / TARGET_LONG_BITS;
 403         k = 0;
 404         for(i = 0;i < nw; i++) {
 405             v = 0;
 406             for(j = 0; j < TARGET_LONG_BITS; j++) {
 407                 v |= ((FD_ISSET(k, fds) != 0) << j);
 408                 k++;
 409             }
 410             target_fds[i] = tswapl(v);
 411         }
 412     }
 413 #endif
 414 }
 415
 416 #if defined(__alpha__)
 417 #define HOST_HZ 1024
 418 #else
 419 #define HOST_HZ 100
 420 #endif
 421
 422 static inline long host_to_target_clock_t(long ticks)
 423 {
 424 #if HOST_HZ == TARGET_HZ
 425     return ticks;
 426 #else
 427     return ((int64_t)ticks * TARGET_HZ) / HOST_HZ;
 428 #endif
 429 }
 430
 431 static inline void host_to_target_rusage(target_ulong target_addr,
 432                                          const struct rusage *rusage)
 433 {
 434     struct target_rusage *target_rusage;
 435
 436     lock_user_struct(target_rusage, target_addr, 0);
 437     target_rusage->ru_utime.tv_sec = tswapl(rusage->ru_utime.tv_sec);
 438     target_rusage->ru_utime.tv_usec = tswapl(rusage->ru_utime.tv_usec);
 439     target_rusage->ru_stime.tv_sec = tswapl(rusage->ru_stime.tv_sec);
 440     target_rusage->ru_stime.tv_usec = tswapl(rusage->ru_stime.tv_usec);
 441     target_rusage->ru_maxrss = tswapl(rusage->ru_maxrss);
 442     target_rusage->ru_ixrss = tswapl(rusage->ru_ixrss);
 443     target_rusage->ru_idrss = tswapl(rusage->ru_idrss);
 444     target_rusage->ru_isrss = tswapl(rusage->ru_isrss);
 445     target_rusage->ru_minflt = tswapl(rusage->ru_minflt);
 446     target_rusage->ru_majflt = tswapl(rusage->ru_majflt);
 447     target_rusage->ru_nswap = tswapl(rusage->ru_nswap);
 448     target_rusage->ru_inblock = tswapl(rusage->ru_inblock);
 449     target_rusage->ru_oublock = tswapl(rusage->ru_oublock);
 450     target_rusage->ru_msgsnd = tswapl(rusage->ru_msgsnd);
 451     target_rusage->ru_msgrcv = tswapl(rusage->ru_msgrcv);
 452     target_rusage->ru_nsignals = tswapl(rusage->ru_nsignals);
 453     target_rusage->ru_nvcsw = tswapl(rusage->ru_nvcsw);
 454     target_rusage->ru_nivcsw = tswapl(rusage->ru_nivcsw);
 455     unlock_user_struct(target_rusage, target_addr, 1);
 456 }
 457
 458 static inline void target_to_host_timeval(struct timeval *tv,
 459                                           target_ulong target_addr)
 460 {
 461     struct target_timeval *target_tv;
 462
 463     lock_user_struct(target_tv, target_addr, 1);
 464     tv->tv_sec = tswapl(target_tv->tv_sec);
 465     tv->tv_usec = tswapl(target_tv->tv_usec);
 466     unlock_user_struct(target_tv, target_addr, 0);
 467 }
 468
 469 static inline void host_to_target_timeval(target_ulong target_addr,
 470                                           const struct timeval *tv)
 471 {
 472     struct target_timeval *target_tv;
 473
 474     lock_user_struct(target_tv, target_addr, 0);
 475     target_tv->tv_sec = tswapl(tv->tv_sec);
 476     target_tv->tv_usec = tswapl(tv->tv_usec);
 477     unlock_user_struct(target_tv, target_addr, 1);
 478 }
 479
 480
 481 static long do_select(long n,
 482                       target_ulong rfd_p, target_ulong wfd_p,
 483                       target_ulong efd_p, target_ulong target_tv)
 484 {
 485     fd_set rfds, wfds, efds;
 486     fd_set *rfds_ptr, *wfds_ptr, *efds_ptr;
 487     target_long *target_rfds, *target_wfds, *target_efds;
 488     struct timeval tv, *tv_ptr;
 489     long ret;
 490     int ok;
 491
 492     if (rfd_p) {
 493         target_rfds = lock_user(rfd_p, sizeof(target_long) * n, 1);
 494         rfds_ptr = target_to_host_fds(&rfds, target_rfds, n);
 495     } else {
 496         target_rfds = NULL;
 497         rfds_ptr = NULL;
 498     }
 499     if (wfd_p) {
 500         target_wfds = lock_user(wfd_p, sizeof(target_long) * n, 1);
 501         wfds_ptr = target_to_host_fds(&wfds, target_wfds, n);
 502     } else {
 503         target_wfds = NULL;
 504         wfds_ptr = NULL;
 505     }
 506     if (efd_p) {
 507         target_efds = lock_user(efd_p, sizeof(target_long) * n, 1);
 508         efds_ptr = target_to_host_fds(&efds, target_efds, n);
 509     } else {
 510         target_efds = NULL;
 511         efds_ptr = NULL;
 512     }
 513
 514     if (target_tv) {
 515         target_to_host_timeval(&tv, target_tv);
 516         tv_ptr = &tv;
 517     } else {
 518         tv_ptr = NULL;
 519     }
 520     ret = get_errno(select(n, rfds_ptr, wfds_ptr, efds_ptr, tv_ptr));
 521     ok = !is_error(ret);
 522
 523     if (ok) {
 524         host_to_target_fds(target_rfds, rfds_ptr, n);
 525         host_to_target_fds(target_wfds, wfds_ptr, n);
 526         host_to_target_fds(target_efds, efds_ptr, n);
 527
 528         if (target_tv) {
 529             host_to_target_timeval(target_tv, &tv);
 530         }
 531     }
 532     if (target_rfds)
 533         unlock_user(target_rfds, rfd_p, ok ? sizeof(target_long) * n : 0);
 534     if (target_wfds)
 535         unlock_user(target_wfds, wfd_p, ok ? sizeof(target_long) * n : 0);
 536     if (target_efds)
 537         unlock_user(target_efds, efd_p, ok ? sizeof(target_long) * n : 0);
 538
 539     return ret;
 540 }
 541
 542 static inline void target_to_host_sockaddr(struct sockaddr *addr,
 543                                            target_ulong target_addr,
 544                                            socklen_t len)
 545 {
 546     struct target_sockaddr *target_saddr;
 547
 548     target_saddr = lock_user(target_addr, len, 1);
 549     memcpy(addr, target_saddr, len);
 550     addr->sa_family = tswap16(target_saddr->sa_family);
 551     unlock_user(target_saddr, target_addr, 0);
 552 }
 553
 554 static inline void host_to_target_sockaddr(target_ulong target_addr,
 555                                            struct sockaddr *addr,
 556                                            socklen_t len)
 557 {
 558     struct target_sockaddr *target_saddr;
 559
 560     target_saddr = lock_user(target_addr, len, 0);
 561     memcpy(target_saddr, addr, len);
 562     target_saddr->sa_family = tswap16(addr->sa_family);
 563     unlock_user(target_saddr, target_addr, len);
 564 }
 565
 566 /* ??? Should this also swap msgh->name?  */
 567 static inline void target_to_host_cmsg(struct msghdr *msgh,
 568                                        struct target_msghdr *target_msgh)
 569 {
 570     struct cmsghdr *cmsg = CMSG_FIRSTHDR(msgh);
 571     struct target_cmsghdr *target_cmsg = TARGET_CMSG_FIRSTHDR(target_msgh);
 572     socklen_t space = 0;
 573
 574     while (cmsg && target_cmsg) {
 575         void *data = CMSG_DATA(cmsg);
 576         void *target_data = TARGET_CMSG_DATA(target_cmsg);
 577
 578         int len = tswapl(target_cmsg->cmsg_len)
 579                   - TARGET_CMSG_ALIGN(sizeof (struct target_cmsghdr));
 580
 581         space += CMSG_SPACE(len);
 582         if (space > msgh->msg_controllen) {
 583             space -= CMSG_SPACE(len);
 584             gemu_log("Host cmsg overflow\n");
 585             break;
 586         }
 587
 588         cmsg->cmsg_level = tswap32(target_cmsg->cmsg_level);
 589         cmsg->cmsg_type = tswap32(target_cmsg->cmsg_type);
 590         cmsg->cmsg_len = CMSG_LEN(len);
 591
 592         if (cmsg->cmsg_level != TARGET_SOL_SOCKET || cmsg->cmsg_type != SCM_RIGHTS) {
 593             gemu_log("Unsupported ancillary data: %d/%d\n", cmsg->cmsg_level, cmsg->cmsg_type);
 594             memcpy(data, target_data, len);
 595         } else {
 596             int *fd = (int *)data;
 597             int *target_fd = (int *)target_data;
 598             int i, numfds = len / sizeof(int);
 599
 600             for (i = 0; i < numfds; i++)
 601                 fd[i] = tswap32(target_fd[i]);
 602         }
 603
 604         cmsg = CMSG_NXTHDR(msgh, cmsg);
 605         target_cmsg = TARGET_CMSG_NXTHDR(target_msgh, target_cmsg);
 606     }
 607
 608     msgh->msg_controllen = space;
 609 }
 610
 611 /* ??? Should this also swap msgh->name?  */
 612 static inline void host_to_target_cmsg(struct target_msghdr *target_msgh,
 613                                        struct msghdr *msgh)
 614 {
 615     struct cmsghdr *cmsg = CMSG_FIRSTHDR(msgh);
 616     struct target_cmsghdr *target_cmsg = TARGET_CMSG_FIRSTHDR(target_msgh);
 617     socklen_t space = 0;
 618
 619     while (cmsg && target_cmsg) {
 620         void *data = CMSG_DATA(cmsg);
 621         void *target_data = TARGET_CMSG_DATA(target_cmsg);
 622
 623         int len = cmsg->cmsg_len - CMSG_ALIGN(sizeof (struct cmsghdr));
 624
 625         space += TARGET_CMSG_SPACE(len);
 626         if (space > tswapl(target_msgh->msg_controllen)) {
 627             space -= TARGET_CMSG_SPACE(len);
 628             gemu_log("Target cmsg overflow\n");
 629             break;
 630         }
 631
 632         target_cmsg->cmsg_level = tswap32(cmsg->cmsg_level);
 633         target_cmsg->cmsg_type = tswap32(cmsg->cmsg_type);
 634         target_cmsg->cmsg_len = tswapl(TARGET_CMSG_LEN(len));
 635
 636         if (cmsg->cmsg_level != TARGET_SOL_SOCKET || cmsg->cmsg_type != SCM_RIGHTS) {
 637             gemu_log("Unsupported ancillary data: %d/%d\n", cmsg->cmsg_level, cmsg->cmsg_type);
 638             memcpy(target_data, data, len);
 639         } else {
 640             int *fd = (int *)data;
 641             int *target_fd = (int *)target_data;
 642             int i, numfds = len / sizeof(int);
 643
 644             for (i = 0; i < numfds; i++)
 645                 target_fd[i] = tswap32(fd[i]);
 646         }
 647
 648         cmsg = CMSG_NXTHDR(msgh, cmsg);
 649         target_cmsg = TARGET_CMSG_NXTHDR(target_msgh, target_cmsg);
 650     }
 651
 652     msgh->msg_controllen = tswapl(space);
 653 }
 654
 655 static long do_setsockopt(int sockfd, int level, int optname,
 656                           target_ulong optval, socklen_t optlen)
 657 {
 658     int val, ret;
 659
 660     switch(level) {
 661     case SOL_TCP:
 662         /* TCP options all take an 'int' value.  */
 663         if (optlen < sizeof(uint32_t))
 664             return -EINVAL;
 665
 666         val = tget32(optval);
 667         ret = get_errno(setsockopt(sockfd, level, optname, &val, sizeof(val)));
 668         break;
 669     case SOL_IP:
 670         switch(optname) {
 671         case IP_TOS:
 672         case IP_TTL:
 673         case IP_HDRINCL:
 674         case IP_ROUTER_ALERT:
 675         case IP_RECVOPTS:
 676         case IP_RETOPTS:
 677         case IP_PKTINFO:
 678         case IP_MTU_DISCOVER:
 679         case IP_RECVERR:
 680         case IP_RECVTOS:
 681 #ifdef IP_FREEBIND
 682         case IP_FREEBIND:
 683 #endif
 684         case IP_MULTICAST_TTL:
 685         case IP_MULTICAST_LOOP:
 686             val = 0;
 687             if (optlen >= sizeof(uint32_t)) {
 688                 val = tget32(optval);
 689             } else if (optlen >= 1) {
 690                 val = tget8(optval);
 691             }
 692             ret = get_errno(setsockopt(sockfd, level, optname, &val, sizeof(val)));
 693             break;
 694         default:
 695             goto unimplemented;
 696         }
 697         break;
 698     case TARGET_SOL_SOCKET:
 699         switch (optname) {
 700             /* Options with 'int' argument.  */
 701         case TARGET_SO_DEBUG:
 702                 optname = SO_DEBUG;
 703                 break;
 704         case TARGET_SO_REUSEADDR:
 705                 optname = SO_REUSEADDR;
 706                 break;
 707         case TARGET_SO_TYPE:
 708                 optname = SO_TYPE;
 709                 break;
 710         case TARGET_SO_ERROR:
 711                 optname = SO_ERROR;
 712                 break;
 713         case TARGET_SO_DONTROUTE:
 714                 optname = SO_DONTROUTE;
 715                 break;
 716         case TARGET_SO_BROADCAST:
 717                 optname = SO_BROADCAST;
 718                 break;
 719         case TARGET_SO_SNDBUF:
 720                 optname = SO_SNDBUF;
 721                 break;
 722         case TARGET_SO_RCVBUF:
 723                 optname = SO_RCVBUF;
 724                 break;
 725         case TARGET_SO_KEEPALIVE:
 726                 optname = SO_KEEPALIVE;
 727                 break;
 728         case TARGET_SO_OOBINLINE:
 729                 optname = SO_OOBINLINE;
 730                 break;
 731         case TARGET_SO_NO_CHECK:
 732                 optname = SO_NO_CHECK;
 733                 break;
 734         case TARGET_SO_PRIORITY:
 735                 optname = SO_PRIORITY;
 736                 break;
 737 #ifdef SO_BSDCOMPAT
 738         case TARGET_SO_BSDCOMPAT:
 739                 optname = SO_BSDCOMPAT;
 740                 break;
 741 #endif
 742         case TARGET_SO_PASSCRED:
 743                 optname = SO_PASSCRED;
 744                 break;
 745         case TARGET_SO_TIMESTAMP:
 746                 optname = SO_TIMESTAMP;
 747                 break;
 748         case TARGET_SO_RCVLOWAT:
 749                 optname = SO_RCVLOWAT;
 750                 break;
 751         case TARGET_SO_RCVTIMEO:
 752                 optname = SO_RCVTIMEO;
 753                 break;
 754         case TARGET_SO_SNDTIMEO:
 755                 optname = SO_SNDTIMEO;
 756                 break;
 757             break;
 758         default:
 759             goto unimplemented;
 760         }
 761         if (optlen < sizeof(uint32_t))
 762         return -EINVAL;
 763
 764         val = tget32(optval);
 765         ret = get_errno(setsockopt(sockfd, SOL_SOCKET, optname, &val, sizeof(val)));
 766         break;
 767     default:
 768     unimplemented:
 769         gemu_log("Unsupported setsockopt level=%d optname=%d \n", level, optname);
 770         ret = -ENOSYS;
 771     }
 772     return ret;
 773 }
 774
 775 static long do_getsockopt(int sockfd, int level, int optname,
 776                           target_ulong optval, target_ulong optlen)
 777 {
 778     int len, lv, val, ret;
 779
 780     switch(level) {
 781     case TARGET_SOL_SOCKET:
 782         level = SOL_SOCKET;
 783         switch (optname) {
 784         case TARGET_SO_LINGER:
 785         case TARGET_SO_RCVTIMEO:
 786         case TARGET_SO_SNDTIMEO:
 787         case TARGET_SO_PEERCRED:
 788         case TARGET_SO_PEERNAME:
 789             /* These don't just return a single integer */
 790             goto unimplemented;
 791         default:
 792             goto int_case;
 793         }
 794         break;
 795     case SOL_TCP:
 796         /* TCP options all take an 'int' value.  */
 797     int_case:
 798         len = tget32(optlen);
 799         if (len < 0)
 800             return -EINVAL;
 801         lv = sizeof(int);
 802         ret = get_errno(getsockopt(sockfd, level, optname, &val, &lv));
 803         if (ret < 0)
 804             return ret;
 805         val = tswap32(val);
 806         if (len > lv)
 807             len = lv;
 808         if (len == 4)
 809             tput32(optval, val);
 810         else
 811             tput8(optval, val);
 812         tput32(optlen, len);
 813         break;
 814     case SOL_IP:
 815         switch(optname) {
 816         case IP_TOS:
 817         case IP_TTL:
 818         case IP_HDRINCL:
 819         case IP_ROUTER_ALERT:
 820         case IP_RECVOPTS:
 821         case IP_RETOPTS:
 822         case IP_PKTINFO:
 823         case IP_MTU_DISCOVER:
 824         case IP_RECVERR:
 825         case IP_RECVTOS:
 826 #ifdef IP_FREEBIND
 827         case IP_FREEBIND:
 828 #endif
 829         case IP_MULTICAST_TTL:
 830         case IP_MULTICAST_LOOP:
 831             len = tget32(optlen);
 832             if (len < 0)
 833                 return -EINVAL;
 834             lv = sizeof(int);
 835             ret = get_errno(getsockopt(sockfd, level, optname, &val, &lv));
 836             if (ret < 0)
 837                 return ret;
 838             if (len < sizeof(int) && len > 0 && val >= 0 && val < 255) {
 839                 len = 1;
 840                 tput32(optlen, len);
 841                 tput8(optval, val);
 842             } else {
 843                 if (len > sizeof(int))
 844                     len = sizeof(int);
 845                 tput32(optlen, len);
 846                 tput32(optval, val);
 847             }
 848             break;
 849         default:
 850             goto unimplemented;
 851         }
 852         break;
 853     default:
 854     unimplemented:
 855         gemu_log("getsockopt level=%d optname=%d not yet supported\n",
 856                  level, optname);
 857         ret = -ENOSYS;
 858         break;
 859     }
 860     return ret;
 861 }
 862
 863 static void lock_iovec(struct iovec *vec, target_ulong target_addr,
 864                        int count, int copy)
 865 {
 866     struct target_iovec *target_vec;
 867     target_ulong base;
 868     int i;
 869
 870     target_vec = lock_user(target_addr, count * sizeof(struct target_iovec), 1);
 871     for(i = 0;i < count; i++) {
 872         base = tswapl(target_vec[i].iov_base);
 873         vec[i].iov_len = tswapl(target_vec[i].iov_len);
 874         vec[i].iov_base = lock_user(base, vec[i].iov_len, copy);
 875     }
 876     unlock_user (target_vec, target_addr, 0);
 877 }
 878
 879 static void unlock_iovec(struct iovec *vec, target_ulong target_addr,
 880                          int count, int copy)
 881 {
 882     struct target_iovec *target_vec;
 883     target_ulong base;
 884     int i;
 885
 886     target_vec = lock_user(target_addr, count * sizeof(struct target_iovec), 1);
 887     for(i = 0;i < count; i++) {
 888         base = tswapl(target_vec[i].iov_base);
 889         unlock_user(vec[i].iov_base, base, copy ? vec[i].iov_len : 0);
 890     }
 891     unlock_user (target_vec, target_addr, 0);
 892 }
 893
 894 static long do_socket(int domain, int type, int protocol)
 895 {
 896 #if defined(TARGET_MIPS)
 897     switch(type) {
 898     case TARGET_SOCK_DGRAM:
 899         type = SOCK_DGRAM;
 900         break;
 901     case TARGET_SOCK_STREAM:
 902         type = SOCK_STREAM;
 903         break;
 904     case TARGET_SOCK_RAW:
 905         type = SOCK_RAW;
 906         break;
 907     case TARGET_SOCK_RDM:
 908         type = SOCK_RDM;
 909         break;
 910     case TARGET_SOCK_SEQPACKET:
 911         type = SOCK_SEQPACKET;
 912         break;
 913     case TARGET_SOCK_PACKET:
 914         type = SOCK_PACKET;
 915         break;
 916     }
 917 #endif
 918     return get_errno(socket(domain, type, protocol));
 919 }
 920
 921 static long do_bind(int sockfd, target_ulong target_addr,
 922                     socklen_t addrlen)
 923 {
 924     void *addr = alloca(addrlen);
 925
 926     target_to_host_sockaddr(addr, target_addr, addrlen);
 927     return get_errno(bind(sockfd, addr, addrlen));
 928 }
 929
 930 static long do_connect(int sockfd, target_ulong target_addr,
 931                     socklen_t addrlen)
 932 {
 933     void *addr = alloca(addrlen);
 934
 935     target_to_host_sockaddr(addr, target_addr, addrlen);
 936     return get_errno(connect(sockfd, addr, addrlen));
 937 }
 938
 939 static long do_sendrecvmsg(int fd, target_ulong target_msg,
 940                            int flags, int send)
 941 {
 942     long ret;
 943     struct target_msghdr *msgp;
 944     struct msghdr msg;
 945     int count;
 946     struct iovec *vec;
 947     target_ulong target_vec;
 948
 949     lock_user_struct(msgp, target_msg, 1);
 950     if (msgp->msg_name) {
 951         msg.msg_namelen = tswap32(msgp->msg_namelen);
 952         msg.msg_name = alloca(msg.msg_namelen);
 953         target_to_host_sockaddr(msg.msg_name, tswapl(msgp->msg_name),
 954                                 msg.msg_namelen);
 955     } else {
 956         msg.msg_name = NULL;
 957         msg.msg_namelen = 0;
 958     }
 959     msg.msg_controllen = 2 * tswapl(msgp->msg_controllen);
 960     msg.msg_control = alloca(msg.msg_controllen);
 961     msg.msg_flags = tswap32(msgp->msg_flags);
 962
 963     count = tswapl(msgp->msg_iovlen);
 964     vec = alloca(count * sizeof(struct iovec));
 965     target_vec = tswapl(msgp->msg_iov);
 966     lock_iovec(vec, target_vec, count, send);
 967     msg.msg_iovlen = count;
 968     msg.msg_iov = vec;
 969
 970     if (send) {
 971         target_to_host_cmsg(&msg, msgp);
 972         ret = get_errno(sendmsg(fd, &msg, flags));
 973     } else {
 974         ret = get_errno(recvmsg(fd, &msg, flags));
 975         if (!is_error(ret))
 976             host_to_target_cmsg(msgp, &msg);
 977     }
 978     unlock_iovec(vec, target_vec, count, !send);
 979     return ret;
 980 }
 981
 982 static long do_accept(int fd, target_ulong target_addr,
 983                       target_ulong target_addrlen)
 984 {
 985     socklen_t addrlen = tget32(target_addrlen);
 986     void *addr = alloca(addrlen);
 987     long ret;
 988
 989     ret = get_errno(accept(fd, addr, &addrlen));
 990     if (!is_error(ret)) {
 991         host_to_target_sockaddr(target_addr, addr, addrlen);
 992         tput32(target_addrlen, addrlen);
 993     }
 994     return ret;
 995 }
 996
 997 static long do_getpeername(int fd, target_ulong target_addr,
 998                            target_ulong target_addrlen)
 999 {
1000     socklen_t addrlen = tget32(target_addrlen);
1001     void *addr = alloca(addrlen);
1002     long ret;
1003
1004     ret = get_errno(getpeername(fd, addr, &addrlen));
1005     if (!is_error(ret)) {
1006         host_to_target_sockaddr(target_addr, addr, addrlen);
1007         tput32(target_addrlen, addrlen);
1008     }
1009     return ret;
1010 }
1011
1012 static long do_getsockname(int fd, target_ulong target_addr,
1013                            target_ulong target_addrlen)
1014 {
1015     socklen_t addrlen = tget32(target_addrlen);
1016     void *addr = alloca(addrlen);
1017     long ret;
1018
1019     ret = get_errno(getsockname(fd, addr, &addrlen));
1020     if (!is_error(ret)) {
1021         host_to_target_sockaddr(target_addr, addr, addrlen);
1022         tput32(target_addrlen, addrlen);
1023     }
1024     return ret;
1025 }
1026
1027 static long do_socketpair(int domain, int type, int protocol,
1028                           target_ulong target_tab)
1029 {
1030     int tab[2];
1031     long ret;
1032
1033     ret = get_errno(socketpair(domain, type, protocol, tab));
1034     if (!is_error(ret)) {
1035         tput32(target_tab, tab[0]);
1036         tput32(target_tab + 4, tab[1]);
1037     }
1038     return ret;
1039 }
1040
1041 static long do_sendto(int fd, target_ulong msg, size_t len, int flags,
1042                       target_ulong target_addr, socklen_t addrlen)
1043 {
1044     void *addr;
1045     void *host_msg;
1046     long ret;
1047
1048     host_msg = lock_user(msg, len, 1);
1049     if (target_addr) {
1050         addr = alloca(addrlen);
1051         target_to_host_sockaddr(addr, target_addr, addrlen);
1052         ret = get_errno(sendto(fd, host_msg, len, flags, addr, addrlen));
1053     } else {
1054         ret = get_errno(send(fd, host_msg, len, flags));
1055     }
1056     unlock_user(host_msg, msg, 0);
1057     return ret;
1058 }
1059
1060 static long do_recvfrom(int fd, target_ulong msg, size_t len, int flags,
1061                         target_ulong target_addr, target_ulong target_addrlen)
1062 {
1063     socklen_t addrlen;
1064     void *addr;
1065     void *host_msg;
1066     long ret;
1067
1068     host_msg = lock_user(msg, len, 0);
1069     if (target_addr) {
1070         addrlen = tget32(target_addrlen);
1071         addr = alloca(addrlen);
1072         ret = get_errno(recvfrom(fd, host_msg, len, flags, addr, &addrlen));
1073     } else {
1074         addr = NULL; /* To keep compiler quiet.  */
1075         ret = get_errno(recv(fd, host_msg, len, flags));
1076     }
1077     if (!is_error(ret)) {
1078         if (target_addr) {
1079             host_to_target_sockaddr(target_addr, addr, addrlen);
1080             tput32(target_addrlen, addrlen);
1081         }
1082         unlock_user(host_msg, msg, len);
1083     } else {
1084         unlock_user(host_msg, msg, 0);
1085     }
1086     return ret;
1087 }
1088
1089 static long do_socketcall(int num, target_ulong vptr)
1090 {
1091     long ret;
1092     const int n = sizeof(target_ulong);
1093
1094     switch(num) {
1095     case SOCKOP_socket:
1096         {
1097             int domain = tgetl(vptr);
1098             int type = tgetl(vptr + n);
1099             int protocol = tgetl(vptr + 2 * n);
1100             ret = do_socket(domain, type, protocol);
1101         }
1102         break;
1103     case SOCKOP_bind:
1104         {
1105             int sockfd = tgetl(vptr);
1106             target_ulong target_addr = tgetl(vptr + n);
1107             socklen_t addrlen = tgetl(vptr + 2 * n);
1108             ret = do_bind(sockfd, target_addr, addrlen);
1109         }
1110         break;
1111     case SOCKOP_connect:
1112         {
1113             int sockfd = tgetl(vptr);
1114             target_ulong target_addr = tgetl(vptr + n);
1115             socklen_t addrlen = tgetl(vptr + 2 * n);
1116             ret = do_connect(sockfd, target_addr, addrlen);
1117         }
1118         break;
1119     case SOCKOP_listen:
1120         {
1121             int sockfd = tgetl(vptr);
1122             int backlog = tgetl(vptr + n);
1123             ret = get_errno(listen(sockfd, backlog));
1124         }
1125         break;
1126     case SOCKOP_accept:
1127         {
1128             int sockfd = tgetl(vptr);
1129             target_ulong target_addr = tgetl(vptr + n);
1130             target_ulong target_addrlen = tgetl(vptr + 2 * n);
1131             ret = do_accept(sockfd, target_addr, target_addrlen);
1132         }
1133         break;
1134     case SOCKOP_getsockname:
1135         {
1136             int sockfd = tgetl(vptr);
1137             target_ulong target_addr = tgetl(vptr + n);
1138             target_ulong target_addrlen = tgetl(vptr + 2 * n);
1139             ret = do_getsockname(sockfd, target_addr, target_addrlen);
1140         }
1141         break;
1142     case SOCKOP_getpeername:
1143         {
1144             int sockfd = tgetl(vptr);
1145             target_ulong target_addr = tgetl(vptr + n);
1146             target_ulong target_addrlen = tgetl(vptr + 2 * n);
1147             ret = do_getpeername(sockfd, target_addr, target_addrlen);
1148         }
1149         break;
1150     case SOCKOP_socketpair:
1151         {
1152             int domain = tgetl(vptr);
1153             int type = tgetl(vptr + n);
1154             int protocol = tgetl(vptr + 2 * n);
1155             target_ulong tab = tgetl(vptr + 3 * n);
1156             ret = do_socketpair(domain, type, protocol, tab);
1157         }
1158         break;
1159     case SOCKOP_send:
1160         {
1161             int sockfd = tgetl(vptr);
1162             target_ulong msg = tgetl(vptr + n);
1163             size_t len = tgetl(vptr + 2 * n);
1164             int flags = tgetl(vptr + 3 * n);
1165             ret = do_sendto(sockfd, msg, len, flags, 0, 0);
1166         }
1167         break;
1168     case SOCKOP_recv:
1169         {
1170             int sockfd = tgetl(vptr);
1171             target_ulong msg = tgetl(vptr + n);
1172             size_t len = tgetl(vptr + 2 * n);
1173             int flags = tgetl(vptr + 3 * n);
1174             ret = do_recvfrom(sockfd, msg, len, flags, 0, 0);
1175         }
1176         break;
1177     case SOCKOP_sendto:
1178         {
1179             int sockfd = tgetl(vptr);
1180             target_ulong msg = tgetl(vptr + n);
1181             size_t len = tgetl(vptr + 2 * n);
1182             int flags = tgetl(vptr + 3 * n);
1183             target_ulong addr = tgetl(vptr + 4 * n);
1184             socklen_t addrlen = tgetl(vptr + 5 * n);
1185             ret = do_sendto(sockfd, msg, len, flags, addr, addrlen);
1186         }
1187         break;
1188     case SOCKOP_recvfrom:
1189         {
1190             int sockfd = tgetl(vptr);
1191             target_ulong msg = tgetl(vptr + n);
1192             size_t len = tgetl(vptr + 2 * n);
1193             int flags = tgetl(vptr + 3 * n);
1194             target_ulong addr = tgetl(vptr + 4 * n);
1195             target_ulong addrlen = tgetl(vptr + 5 * n);
1196             ret = do_recvfrom(sockfd, msg, len, flags, addr, addrlen);
1197         }
1198         break;
1199     case SOCKOP_shutdown:
1200         {
1201             int sockfd = tgetl(vptr);
1202             int how = tgetl(vptr + n);
1203
1204             ret = get_errno(shutdown(sockfd, how));
1205         }
1206         break;
1207     case SOCKOP_sendmsg:
1208     case SOCKOP_recvmsg:
1209         {
1210             int fd;
1211             target_ulong target_msg;
1212             int flags;
1213
1214             fd = tgetl(vptr);
1215             target_msg = tgetl(vptr + n);
1216             flags = tgetl(vptr + 2 * n);
1217
1218             ret = do_sendrecvmsg(fd, target_msg, flags,
1219                                  (num == SOCKOP_sendmsg));
1220         }
1221         break;
1222     case SOCKOP_setsockopt:
1223         {
1224             int sockfd = tgetl(vptr);
1225             int level = tgetl(vptr + n);
1226             int optname = tgetl(vptr + 2 * n);
1227             target_ulong optval = tgetl(vptr + 3 * n);
1228             socklen_t optlen = tgetl(vptr + 4 * n);
1229
1230             ret = do_setsockopt(sockfd, level, optname, optval, optlen);
1231         }
1232         break;
1233     case SOCKOP_getsockopt:
1234         {
1235             int sockfd = tgetl(vptr);
1236             int level = tgetl(vptr + n);
1237             int optname = tgetl(vptr + 2 * n);
1238             target_ulong optval = tgetl(vptr + 3 * n);
1239             target_ulong poptlen = tgetl(vptr + 4 * n);
1240
1241             ret = do_getsockopt(sockfd, level, optname, optval, poptlen);
1242         }
1243         break;
1244     default:
1245         gemu_log("Unsupported socketcall: %d\n", num);
1246         ret = -ENOSYS;
1247         break;
1248     }
1249     return ret;
1250 }
1251
1252 #define N_SHM_REGIONS   32
1253
1254 static struct shm_region {
1255     uint32_t    start;
1256     uint32_t    size;
1257 } shm_regions[N_SHM_REGIONS];
1258
1259 struct target_ipc_perm
1260 {
1261     target_long __key;
1262     target_ulong uid;
1263     target_ulong gid;
1264     target_ulong cuid;
1265     target_ulong cgid;
1266     unsigned short int mode;
1267     unsigned short int __pad1;
1268     unsigned short int __seq;
1269     unsigned short int __pad2;
1270     target_ulong __unused1;
1271     target_ulong __unused2;
1272 };
1273
1274 struct target_semid_ds
1275 {
1276   struct target_ipc_perm sem_perm;
1277   target_ulong sem_otime;
1278   target_ulong __unused1;
1279   target_ulong sem_ctime;
1280   target_ulong __unused2;
1281   target_ulong sem_nsems;
1282   target_ulong __unused3;
1283   target_ulong __unused4;
1284 };
1285
1286 static inline void target_to_host_ipc_perm(struct ipc_perm *host_ip,
1287                                            target_ulong target_addr)
1288 {
1289     struct target_ipc_perm *target_ip;
1290     struct target_semid_ds *target_sd;
1291
1292     lock_user_struct(target_sd, target_addr, 1);
1293     target_ip=&(target_sd->sem_perm);
1294     host_ip->__key = tswapl(target_ip->__key);
1295     host_ip->uid = tswapl(target_ip->uid);
1296     host_ip->gid = tswapl(target_ip->gid);
1297     host_ip->cuid = tswapl(target_ip->cuid);
1298     host_ip->cgid = tswapl(target_ip->cgid);
1299     host_ip->mode = tswapl(target_ip->mode);
1300     unlock_user_struct(target_sd, target_addr, 0);
1301 }
1302
1303 static inline void host_to_target_ipc_perm(target_ulong target_addr,
1304                                            struct ipc_perm *host_ip)
1305 {
1306     struct target_ipc_perm *target_ip;
1307     struct target_semid_ds *target_sd;
1308
1309     lock_user_struct(target_sd, target_addr, 0);
1310     target_ip = &(target_sd->sem_perm);
1311     target_ip->__key = tswapl(host_ip->__key);
1312     target_ip->uid = tswapl(host_ip->uid);
1313     target_ip->gid = tswapl(host_ip->gid);
1314     target_ip->cuid = tswapl(host_ip->cuid);
1315     target_ip->cgid = tswapl(host_ip->cgid);
1316     target_ip->mode = tswapl(host_ip->mode);
1317     unlock_user_struct(target_sd, target_addr, 1);
1318 }
1319
1320 static inline void target_to_host_semid_ds(struct semid_ds *host_sd,
1321                                           target_ulong target_addr)
1322 {
1323     struct target_semid_ds *target_sd;
1324
1325     lock_user_struct(target_sd, target_addr, 1);
1326     target_to_host_ipc_perm(&(host_sd->sem_perm),target_addr);
1327     host_sd->sem_nsems = tswapl(target_sd->sem_nsems);
1328     host_sd->sem_otime = tswapl(target_sd->sem_otime);
1329     host_sd->sem_ctime = tswapl(target_sd->sem_ctime);
1330     unlock_user_struct(target_sd, target_addr, 0);
1331 }
1332
1333 static inline void host_to_target_semid_ds(target_ulong target_addr,
1334                                            struct semid_ds *host_sd)
1335 {
1336     struct target_semid_ds *target_sd;
1337
1338     lock_user_struct(target_sd, target_addr, 0);
1339     host_to_target_ipc_perm(target_addr,&(host_sd->sem_perm));
1340     target_sd->sem_nsems = tswapl(host_sd->sem_nsems);
1341     target_sd->sem_otime = tswapl(host_sd->sem_otime);
1342     target_sd->sem_ctime = tswapl(host_sd->sem_ctime);
1343     unlock_user_struct(target_sd, target_addr, 1);
1344 }
1345
1346 union semun {
1347         int val;
1348         struct semid_ds *buf;
1349         unsigned short *array;
1350 };
1351
1352 union target_semun {
1353         int val;
1354         target_long buf;
1355         unsigned short int *array;
1356 };
1357
1358 static inline void target_to_host_semun(unsigned long cmd,
1359                                         union semun *host_su,
1360                                         target_ulong target_addr,
1361                                         struct semid_ds *ds)
1362 {
1363     union target_semun *target_su;
1364
1365     switch( cmd ) {
1366         case IPC_STAT:
1367         case IPC_SET:
1368            lock_user_struct(target_su, target_addr, 1);
1369            target_to_host_semid_ds(ds,target_su->buf);
1370            host_su->buf = ds;
1371            unlock_user_struct(target_su, target_addr, 0);
1372            break;
1373         case GETVAL:
1374         case SETVAL:
1375            lock_user_struct(target_su, target_addr, 1);
1376            host_su->val = tswapl(target_su->val);
1377            unlock_user_struct(target_su, target_addr, 0);
1378            break;
1379         case GETALL:
1380         case SETALL:
1381            lock_user_struct(target_su, target_addr, 1);
1382            *host_su->array = tswap16(*target_su->array);
1383            unlock_user_struct(target_su, target_addr, 0);
1384            break;
1385         default:
1386            gemu_log("semun operation not fully supported: %d\n", (int)cmd);
1387     }
1388 }
1389
1390 static inline void host_to_target_semun(unsigned long cmd,
1391                                         target_ulong target_addr,
1392                                         union semun *host_su,
1393                                         struct semid_ds *ds)
1394 {
1395     union target_semun *target_su;
1396
1397     switch( cmd ) {
1398         case IPC_STAT:
1399         case IPC_SET:
1400            lock_user_struct(target_su, target_addr, 0);
1401            host_to_target_semid_ds(target_su->buf,ds);
1402            unlock_user_struct(target_su, target_addr, 1);
1403            break;
1404         case GETVAL:
1405         case SETVAL:
1406            lock_user_struct(target_su, target_addr, 0);
1407            target_su->val = tswapl(host_su->val);
1408            unlock_user_struct(target_su, target_addr, 1);
1409            break;
1410         case GETALL:
1411         case SETALL:
1412            lock_user_struct(target_su, target_addr, 0);
1413            *target_su->array = tswap16(*host_su->array);
1414            unlock_user_struct(target_su, target_addr, 1);
1415            break;
1416         default:
1417            gemu_log("semun operation not fully supported: %d\n", (int)cmd);
1418     }
1419 }
1420
1421 static inline long do_semctl(long first, long second, long third, long ptr)
1422 {
1423     union semun arg;
1424     struct semid_ds dsarg;
1425     int cmd = third&0xff;
1426     long ret = 0;
1427
1428     switch( cmd ) {
1429         case GETVAL:
1430             target_to_host_semun(cmd,&arg,ptr,&dsarg);
1431             ret = get_errno(semctl(first, second, cmd, arg));
1432             host_to_target_semun(cmd,ptr,&arg,&dsarg);
1433             break;
1434         case SETVAL:
1435             target_to_host_semun(cmd,&arg,ptr,&dsarg);
1436             ret = get_errno(semctl(first, second, cmd, arg));
1437             host_to_target_semun(cmd,ptr,&arg,&dsarg);
1438             break;
1439         case GETALL:
1440             target_to_host_semun(cmd,&arg,ptr,&dsarg);
1441             ret = get_errno(semctl(first, second, cmd, arg));
1442             host_to_target_semun(cmd,ptr,&arg,&dsarg);
1443             break;
1444         case SETALL:
1445             target_to_host_semun(cmd,&arg,ptr,&dsarg);
1446             ret = get_errno(semctl(first, second, cmd, arg));
1447             host_to_target_semun(cmd,ptr,&arg,&dsarg);
1448             break;
1449         case IPC_STAT:
1450             target_to_host_semun(cmd,&arg,ptr,&dsarg);
1451             ret = get_errno(semctl(first, second, cmd, arg));
1452             host_to_target_semun(cmd,ptr,&arg,&dsarg);
1453             break;
1454         case IPC_SET:
1455             target_to_host_semun(cmd,&arg,ptr,&dsarg);
1456             ret = get_errno(semctl(first, second, cmd, arg));
1457             host_to_target_semun(cmd,ptr,&arg,&dsarg);
1458             break;
1459     default:
1460             ret = get_errno(semctl(first, second, cmd, arg));
1461     }
1462
1463     return ret;
1464 }
1465
1466 struct target_msqid_ds
1467 {
1468   struct target_ipc_perm msg_perm;
1469   target_ulong msg_stime;
1470   target_ulong __unused1;
1471   target_ulong msg_rtime;
1472   target_ulong __unused2;
1473   target_ulong msg_ctime;
1474   target_ulong __unused3;
1475   target_ulong __msg_cbytes;
1476   target_ulong msg_qnum;
1477   target_ulong msg_qbytes;
1478   target_ulong msg_lspid;
1479   target_ulong msg_lrpid;
1480   target_ulong __unused4;
1481   target_ulong __unused5;
1482 };
1483
1484 static inline void target_to_host_msqid_ds(struct msqid_ds *host_md,
1485                                           target_ulong target_addr)
1486 {
1487     struct target_msqid_ds *target_md;
1488
1489     lock_user_struct(target_md, target_addr, 1);
1490     target_to_host_ipc_perm(&(host_md->msg_perm),target_addr);
1491     host_md->msg_stime = tswapl(target_md->msg_stime);
1492     host_md->msg_rtime = tswapl(target_md->msg_rtime);
1493     host_md->msg_ctime = tswapl(target_md->msg_ctime);
1494     host_md->__msg_cbytes = tswapl(target_md->__msg_cbytes);
1495     host_md->msg_qnum = tswapl(target_md->msg_qnum);
1496     host_md->msg_qbytes = tswapl(target_md->msg_qbytes);
1497     host_md->msg_lspid = tswapl(target_md->msg_lspid);
1498     host_md->msg_lrpid = tswapl(target_md->msg_lrpid);
1499     unlock_user_struct(target_md, target_addr, 0);
1500 }
1501
1502 static inline void host_to_target_msqid_ds(target_ulong target_addr,
1503                                            struct msqid_ds *host_md)
1504 {
1505     struct target_msqid_ds *target_md;
1506
1507     lock_user_struct(target_md, target_addr, 0);
1508     host_to_target_ipc_perm(target_addr,&(host_md->msg_perm));
1509     target_md->msg_stime = tswapl(host_md->msg_stime);
1510     target_md->msg_rtime = tswapl(host_md->msg_rtime);
1511     target_md->msg_ctime = tswapl(host_md->msg_ctime);
1512     target_md->__msg_cbytes = tswapl(host_md->__msg_cbytes);
1513     target_md->msg_qnum = tswapl(host_md->msg_qnum);
1514     target_md->msg_qbytes = tswapl(host_md->msg_qbytes);
1515     target_md->msg_lspid = tswapl(host_md->msg_lspid);
1516     target_md->msg_lrpid = tswapl(host_md->msg_lrpid);
1517     unlock_user_struct(target_md, target_addr, 1);
1518 }
1519
1520 static inline long do_msgctl(long first, long second, long ptr)
1521 {
1522     struct msqid_ds dsarg;
1523     int cmd = second&0xff;
1524     long ret = 0;
1525     switch( cmd ) {
1526     case IPC_STAT:
1527     case IPC_SET:
1528         target_to_host_msqid_ds(&dsarg,ptr);
1529         ret = get_errno(msgctl(first, cmd, &dsarg));
1530         host_to_target_msqid_ds(ptr,&dsarg);
1531     default:
1532         ret = get_errno(msgctl(first, cmd, &dsarg));
1533     }
1534     return ret;
1535 }
1536
1537 struct target_msgbuf {
1538         target_ulong mtype;
1539         char    mtext[1];
1540 };
1541
1542 static inline long do_msgsnd(long msqid, long msgp, long msgsz, long msgflg)
1543 {
1544     struct target_msgbuf *target_mb;
1545     struct msgbuf *host_mb;
1546     long ret = 0;
1547
1548     lock_user_struct(target_mb,msgp,0);
1549     host_mb = malloc(msgsz+sizeof(long));
1550     host_mb->mtype = tswapl(target_mb->mtype);
1551     memcpy(host_mb->mtext,target_mb->mtext,msgsz);
1552     ret = get_errno(msgsnd(msqid, host_mb, msgsz, msgflg));
1553     free(host_mb);
1554     unlock_user_struct(target_mb, msgp, 0);
1555
1556     return ret;
1557 }
1558
1559 static inline long do_msgrcv(long msqid, long msgp, long msgsz, long msgtype, long msgflg)
1560 {
1561     struct target_msgbuf *target_mb;
1562     struct msgbuf *host_mb;
1563     long ret = 0;
1564
1565     lock_user_struct(target_mb, msgp, 0);
1566     host_mb = malloc(msgsz+sizeof(long));
1567     ret = get_errno(msgrcv(msqid, host_mb, msgsz, 1, msgflg));
1568     if (ret > 0)
1569         memcpy(target_mb->mtext, host_mb->mtext, ret);
1570     target_mb->mtype = tswapl(host_mb->mtype);
1571     free(host_mb);
1572     unlock_user_struct(target_mb, msgp, 0);
1573
1574     return ret;
1575 }
1576
1577 /* ??? This only works with linear mappings.  */
1578 static long do_ipc(long call, long first, long second, long third,
1579                    long ptr, long fifth)
1580 {
1581     int version;
1582     long ret = 0;
1583     unsigned long raddr;
1584     struct shmid_ds shm_info;
1585     int i;
1586
1587     version = call >> 16;
1588     call &= 0xffff;
1589
1590     switch (call) {
1591     case IPCOP_semop:
1592         ret = get_errno(semop(first,(struct sembuf *) ptr, second));
1593         break;
1594
1595     case IPCOP_semget:
1596         ret = get_errno(semget(first, second, third));
1597         break;
1598
1599     case IPCOP_semctl:
1600         ret = do_semctl(first, second, third, ptr);
1601         break;
1602
1603     case IPCOP_semtimedop:
1604         gemu_log("Unsupported ipc call: %ld (version %d)\n", call, version);
1605         ret = -ENOSYS;
1606         break;
1607
1608         case IPCOP_msgget:
1609                 ret = get_errno(msgget(first, second));
1610                 break;
1611
1612         case IPCOP_msgsnd:
1613                 ret = do_msgsnd(first, ptr, second, third);
1614                 break;
1615
1616         case IPCOP_msgctl:
1617                 ret = do_msgctl(first, second, ptr);
1618                 break;
1619
1620         case IPCOP_msgrcv:
1621                 {
1622                       struct ipc_kludge
1623                       {
1624                               void *__unbounded msgp;
1625                               long int msgtyp;
1626                       };
1627
1628                       struct ipc_kludge *foo = (struct ipc_kludge *) ptr;
1629                       struct msgbuf *msgp = (struct msgbuf *) foo->msgp;
1630
1631                       ret = do_msgrcv(first, (long)msgp, second, 0, third);
1632
1633                 }
1634                 break;
1635
1636     case IPCOP_shmat:
1637         /* SHM_* flags are the same on all linux platforms */
1638         ret = get_errno((long) shmat(first, (void *) ptr, second));
1639         if (is_error(ret))
1640             break;
1641         raddr = ret;
1642         /* find out the length of the shared memory segment */
1643
1644         ret = get_errno(shmctl(first, IPC_STAT, &shm_info));
1645         if (is_error(ret)) {
1646             /* can't get length, bail out */
1647             shmdt((void *) raddr);
1648             break;
1649         }
1650         page_set_flags(raddr, raddr + shm_info.shm_segsz,
1651                        PAGE_VALID | PAGE_READ |
1652                        ((second & SHM_RDONLY)? 0: PAGE_WRITE));
1653         for (i = 0; i < N_SHM_REGIONS; ++i) {
1654             if (shm_regions[i].start == 0) {
1655                 shm_regions[i].start = raddr;
1656                 shm_regions[i].size = shm_info.shm_segsz;
1657                 break;
1658             }
1659         }
1660         if (put_user(raddr, (uint32_t *)third))
1661             return -EFAULT;
1662         ret = 0;
1663         break;
1664     case IPCOP_shmdt:
1665         for (i = 0; i < N_SHM_REGIONS; ++i) {
1666             if (shm_regions[i].start == ptr) {
1667                 shm_regions[i].start = 0;
1668                 page_set_flags(ptr, shm_regions[i].size, 0);
1669                 break;
1670             }
1671         }
1672         ret = get_errno(shmdt((void *) ptr));
1673         break;
1674
1675     case IPCOP_shmget:
1676         /* IPC_* flag values are the same on all linux platforms */
1677         ret = get_errno(shmget(first, second, third));
1678         break;
1679
1680         /* IPC_* and SHM_* command values are the same on all linux platforms */
1681     case IPCOP_shmctl:
1682         switch(second) {
1683         case IPC_RMID:
1684         case SHM_LOCK:
1685         case SHM_UNLOCK:
1686             ret = get_errno(shmctl(first, second, NULL));
1687             break;
1688         default:
1689             goto unimplemented;
1690         }
1691         break;
1692     default:
1693     unimplemented:
1694         gemu_log("Unsupported ipc call: %ld (version %d)\n", call, version);
1695         ret = -ENOSYS;
1696         break;
1697     }
1698     return ret;
1699 }
1700
1701 /* kernel structure types definitions */
1702 #define IFNAMSIZ        16
1703
1704 #define STRUCT(name, list...) STRUCT_ ## name,
1705 #define STRUCT_SPECIAL(name) STRUCT_ ## name,
1706 enum {
1707 #include "syscall_types.h"
1708 };
1709 #undef STRUCT
1710 #undef STRUCT_SPECIAL
1711
1712 #define STRUCT(name, list...) const argtype struct_ ## name ## _def[] = { list, TYPE_NULL };
1713 #define STRUCT_SPECIAL(name)
1714 #include "syscall_types.h"
1715 #undef STRUCT
1716 #undef STRUCT_SPECIAL
1717
1718 typedef struct IOCTLEntry {
1719     unsigned int target_cmd;
1720     unsigned int host_cmd;
1721     const char *name;
1722     int access;
1723     const argtype arg_type[5];
1724 } IOCTLEntry;
1725
1726 #define IOC_R 0x0001
1727 #define IOC_W 0x0002
1728 #define IOC_RW (IOC_R | IOC_W)
1729
1730 #define MAX_STRUCT_SIZE 4096
1731
1732 IOCTLEntry ioctl_entries[] = {
1733 #define IOCTL(cmd, access, types...) \
1734     { TARGET_ ## cmd, cmd, #cmd, access, { types } },
1735 #include "ioctls.h"
1736     { 0, 0, },
1737 };
1738
1739 /* ??? Implement proper locking for ioctls.  */
1740 static long do_ioctl(long fd, long cmd, long arg)
1741 {
1742     const IOCTLEntry *ie;
1743     const argtype *arg_type;
1744     long ret;
1745     uint8_t buf_temp[MAX_STRUCT_SIZE];
1746     int target_size;
1747     void *argptr;
1748
1749     ie = ioctl_entries;
1750     for(;;) {
1751         if (ie->target_cmd == 0) {
1752             gemu_log("Unsupported ioctl: cmd=0x%04lx\n", cmd);
1753             return -ENOSYS;
1754         }
1755         if (ie->target_cmd == cmd)
1756             break;
1757         ie++;
1758     }
1759     arg_type = ie->arg_type;
1760 #if defined(DEBUG)
1761     gemu_log("ioctl: cmd=0x%04lx (%s)\n", cmd, ie->name);
1762 #endif
1763     switch(arg_type[0]) {
1764     case TYPE_NULL:
1765         /* no argument */
1766         ret = get_errno(ioctl(fd, ie->host_cmd));
1767         break;
1768     case TYPE_PTRVOID:
1769     case TYPE_INT:
1770         /* int argment */
1771         ret = get_errno(ioctl(fd, ie->host_cmd, arg));
1772         break;
1773     case TYPE_PTR:
1774         arg_type++;
1775         target_size = thunk_type_size(arg_type, 0);
1776         switch(ie->access) {
1777         case IOC_R:
1778             ret = get_errno(ioctl(fd, ie->host_cmd, buf_temp));
1779             if (!is_error(ret)) {
1780                 argptr = lock_user(arg, target_size, 0);
1781                 thunk_convert(argptr, buf_temp, arg_type, THUNK_TARGET);
1782                 unlock_user(argptr, arg, target_size);
1783             }
1784             break;
1785         case IOC_W:
1786             argptr = lock_user(arg, target_size, 1);
1787             thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST);
1788             unlock_user(argptr, arg, 0);
1789             ret = get_errno(ioctl(fd, ie->host_cmd, buf_temp));
1790             break;
1791         default:
1792         case IOC_RW:
1793             argptr = lock_user(arg, target_size, 1);
1794             thunk_convert(buf_temp, argptr, arg_type, THUNK_HOST);
1795             unlock_user(argptr, arg, 0);
1796             ret = get_errno(ioctl(fd, ie->host_cmd, buf_temp));
1797             if (!is_error(ret)) {
1798                 argptr = lock_user(arg, target_size, 0);
1799                 thunk_convert(argptr, buf_temp, arg_type, THUNK_TARGET);
1800                 unlock_user(argptr, arg, target_size);
1801             }
1802             break;
1803         }
1804         break;
1805     default:
1806         gemu_log("Unsupported ioctl type: cmd=0x%04lx type=%d\n", cmd, arg_type[0]);
1807         ret = -ENOSYS;
1808         break;
1809     }
1810     return ret;
1811 }
1812
1813 bitmask_transtbl iflag_tbl[] = {
1814         { TARGET_IGNBRK, TARGET_IGNBRK, IGNBRK, IGNBRK },
1815         { TARGET_BRKINT, TARGET_BRKINT, BRKINT, BRKINT },
1816         { TARGET_IGNPAR, TARGET_IGNPAR, IGNPAR, IGNPAR },
1817         { TARGET_PARMRK, TARGET_PARMRK, PARMRK, PARMRK },
1818         { TARGET_INPCK, TARGET_INPCK, INPCK, INPCK },
1819         { TARGET_ISTRIP, TARGET_ISTRIP, ISTRIP, ISTRIP },
1820         { TARGET_INLCR, TARGET_INLCR, INLCR, INLCR },
1821         { TARGET_IGNCR, TARGET_IGNCR, IGNCR, IGNCR },
1822         { TARGET_ICRNL, TARGET_ICRNL, ICRNL, ICRNL },
1823         { TARGET_IUCLC, TARGET_IUCLC, IUCLC, IUCLC },
1824         { TARGET_IXON, TARGET_IXON, IXON, IXON },
1825         { TARGET_IXANY, TARGET_IXANY, IXANY, IXANY },
1826         { TARGET_IXOFF, TARGET_IXOFF, IXOFF, IXOFF },
1827         { TARGET_IMAXBEL, TARGET_IMAXBEL, IMAXBEL, IMAXBEL },
1828         { 0, 0, 0, 0 }
1829 };
1830
1831 bitmask_transtbl oflag_tbl[] = {
1832         { TARGET_OPOST, TARGET_OPOST, OPOST, OPOST },
1833         { TARGET_OLCUC, TARGET_OLCUC, OLCUC, OLCUC },
1834         { TARGET_ONLCR, TARGET_ONLCR, ONLCR, ONLCR },
1835         { TARGET_OCRNL, TARGET_OCRNL, OCRNL, OCRNL },
1836         { TARGET_ONOCR, TARGET_ONOCR, ONOCR, ONOCR },
1837         { TARGET_ONLRET, TARGET_ONLRET, ONLRET, ONLRET },
1838         { TARGET_OFILL, TARGET_OFILL, OFILL, OFILL },
1839         { TARGET_OFDEL, TARGET_OFDEL, OFDEL, OFDEL },
1840         { TARGET_NLDLY, TARGET_NL0, NLDLY, NL0 },
1841         { TARGET_NLDLY, TARGET_NL1, NLDLY, NL1 },
1842         { TARGET_CRDLY, TARGET_CR0, CRDLY, CR0 },
1843         { TARGET_CRDLY, TARGET_CR1, CRDLY, CR1 },
1844         { TARGET_CRDLY, TARGET_CR2, CRDLY, CR2 },
1845         { TARGET_CRDLY, TARGET_CR3, CRDLY, CR3 },
1846         { TARGET_TABDLY, TARGET_TAB0, TABDLY, TAB0 },
1847         { TARGET_TABDLY, TARGET_TAB1, TABDLY, TAB1 },
1848         { TARGET_TABDLY, TARGET_TAB2, TABDLY, TAB2 },
1849         { TARGET_TABDLY, TARGET_TAB3, TABDLY, TAB3 },
1850         { TARGET_BSDLY, TARGET_BS0, BSDLY, BS0 },
1851         { TARGET_BSDLY, TARGET_BS1, BSDLY, BS1 },
1852         { TARGET_VTDLY, TARGET_VT0, VTDLY, VT0 },
1853         { TARGET_VTDLY, TARGET_VT1, VTDLY, VT1 },
1854         { TARGET_FFDLY, TARGET_FF0, FFDLY, FF0 },
1855         { TARGET_FFDLY, TARGET_FF1, FFDLY, FF1 },
1856         { 0, 0, 0, 0 }
1857 };
1858
1859 bitmask_transtbl cflag_tbl[] = {
1860         { TARGET_CBAUD, TARGET_B0, CBAUD, B0 },
1861         { TARGET_CBAUD, TARGET_B50, CBAUD, B50 },
1862         { TARGET_CBAUD, TARGET_B75, CBAUD, B75 },
1863         { TARGET_CBAUD, TARGET_B110, CBAUD, B110 },
1864         { TARGET_CBAUD, TARGET_B134, CBAUD, B134 },
1865         { TARGET_CBAUD, TARGET_B150, CBAUD, B150 },
1866         { TARGET_CBAUD, TARGET_B200, CBAUD, B200 },
1867         { TARGET_CBAUD, TARGET_B300, CBAUD, B300 },
1868         { TARGET_CBAUD, TARGET_B600, CBAUD, B600 },
1869         { TARGET_CBAUD, TARGET_B1200, CBAUD, B1200 },
1870         { TARGET_CBAUD, TARGET_B1800, CBAUD, B1800 },
1871         { TARGET_CBAUD, TARGET_B2400, CBAUD, B2400 },
1872         { TARGET_CBAUD, TARGET_B4800, CBAUD, B4800 },
1873         { TARGET_CBAUD, TARGET_B9600, CBAUD, B9600 },
1874         { TARGET_CBAUD, TARGET_B19200, CBAUD, B19200 },
1875         { TARGET_CBAUD, TARGET_B38400, CBAUD, B38400 },
1876         { TARGET_CBAUD, TARGET_B57600, CBAUD, B57600 },
1877         { TARGET_CBAUD, TARGET_B115200, CBAUD, B115200 },
1878         { TARGET_CBAUD, TARGET_B230400, CBAUD, B230400 },
1879         { TARGET_CBAUD, TARGET_B460800, CBAUD, B460800 },
1880         { TARGET_CSIZE, TARGET_CS5, CSIZE, CS5 },
1881         { TARGET_CSIZE, TARGET_CS6, CSIZE, CS6 },
1882         { TARGET_CSIZE, TARGET_CS7, CSIZE, CS7 },
1883         { TARGET_CSIZE, TARGET_CS8, CSIZE, CS8 },
1884         { TARGET_CSTOPB, TARGET_CSTOPB, CSTOPB, CSTOPB },
1885         { TARGET_CREAD, TARGET_CREAD, CREAD, CREAD },
1886         { TARGET_PARENB, TARGET_PARENB, PARENB, PARENB },
1887         { TARGET_PARODD, TARGET_PARODD, PARODD, PARODD },
1888         { TARGET_HUPCL, TARGET_HUPCL, HUPCL, HUPCL },
1889         { TARGET_CLOCAL, TARGET_CLOCAL, CLOCAL, CLOCAL },
1890         { TARGET_CRTSCTS, TARGET_CRTSCTS, CRTSCTS, CRTSCTS },
1891         { 0, 0, 0, 0 }
1892 };
1893
1894 bitmask_transtbl lflag_tbl[] = {
1895         { TARGET_ISIG, TARGET_ISIG, ISIG, ISIG },
1896         { TARGET_ICANON, TARGET_ICANON, ICANON, ICANON },
1897         { TARGET_XCASE, TARGET_XCASE, XCASE, XCASE },
1898         { TARGET_ECHO, TARGET_ECHO, ECHO, ECHO },
1899         { TARGET_ECHOE, TARGET_ECHOE, ECHOE, ECHOE },
1900         { TARGET_ECHOK, TARGET_ECHOK, ECHOK, ECHOK },
1901         { TARGET_ECHONL, TARGET_ECHONL, ECHONL, ECHONL },
1902         { TARGET_NOFLSH, TARGET_NOFLSH, NOFLSH, NOFLSH },
1903         { TARGET_TOSTOP, TARGET_TOSTOP, TOSTOP, TOSTOP },
1904         { TARGET_ECHOCTL, TARGET_ECHOCTL, ECHOCTL, ECHOCTL },
1905         { TARGET_ECHOPRT, TARGET_ECHOPRT, ECHOPRT, ECHOPRT },
1906         { TARGET_ECHOKE, TARGET_ECHOKE, ECHOKE, ECHOKE },
1907         { TARGET_FLUSHO, TARGET_FLUSHO, FLUSHO, FLUSHO },
1908         { TARGET_PENDIN, TARGET_PENDIN, PENDIN, PENDIN },
1909         { TARGET_IEXTEN, TARGET_IEXTEN, IEXTEN, IEXTEN },
1910         { 0, 0, 0, 0 }
1911 };
1912
1913 static void target_to_host_termios (void *dst, const void *src)
1914 {
1915     struct host_termios *host = dst;
1916     const struct target_termios *target = src;
1917
1918     host->c_iflag =
1919         target_to_host_bitmask(tswap32(target->c_iflag), iflag_tbl);
1920     host->c_oflag =
1921         target_to_host_bitmask(tswap32(target->c_oflag), oflag_tbl);
1922     host->c_cflag =
1923         target_to_host_bitmask(tswap32(target->c_cflag), cflag_tbl);
1924     host->c_lflag =
1925         target_to_host_bitmask(tswap32(target->c_lflag), lflag_tbl);
1926     host->c_line = target->c_line;
1927
1928     host->c_cc[VINTR] = target->c_cc[TARGET_VINTR];
1929     host->c_cc[VQUIT] = target->c_cc[TARGET_VQUIT];
1930     host->c_cc[VERASE] = target->c_cc[TARGET_VERASE];
1931     host->c_cc[VKILL] = target->c_cc[TARGET_VKILL];
1932     host->c_cc[VEOF] = target->c_cc[TARGET_VEOF];
1933     host->c_cc[VTIME] = target->c_cc[TARGET_VTIME];
1934     host->c_cc[VMIN] = target->c_cc[TARGET_VMIN];
1935     host->c_cc[VSWTC] = target->c_cc[TARGET_VSWTC];
1936     host->c_cc[VSTART] = target->c_cc[TARGET_VSTART];
1937     host->c_cc[VSTOP] = target->c_cc[TARGET_VSTOP];
1938     host->c_cc[VSUSP] = target->c_cc[TARGET_VSUSP];
1939     host->c_cc[VEOL] = target->c_cc[TARGET_VEOL];
1940     host->c_cc[VREPRINT] = target->c_cc[TARGET_VREPRINT];
1941     host->c_cc[VDISCARD] = target->c_cc[TARGET_VDISCARD];
1942     host->c_cc[VWERASE] = target->c_cc[TARGET_VWERASE];
1943     host->c_cc[VLNEXT] = target->c_cc[TARGET_VLNEXT];
1944     host->c_cc[VEOL2] = target->c_cc[TARGET_VEOL2];
1945 }
1946
1947 static void host_to_target_termios (void *dst, const void *src)
1948 {
1949     struct target_termios *target = dst;
1950     const struct host_termios *host = src;
1951
1952     target->c_iflag =
1953         tswap32(host_to_target_bitmask(host->c_iflag, iflag_tbl));
1954     target->c_oflag =
1955         tswap32(host_to_target_bitmask(host->c_oflag, oflag_tbl));
1956     target->c_cflag =
1957         tswap32(host_to_target_bitmask(host->c_cflag, cflag_tbl));
1958     target->c_lflag =
1959         tswap32(host_to_target_bitmask(host->c_lflag, lflag_tbl));
1960     target->c_line = host->c_line;
1961
1962     target->c_cc[TARGET_VINTR] = host->c_cc[VINTR];
1963     target->c_cc[TARGET_VQUIT] = host->c_cc[VQUIT];
1964     target->c_cc[TARGET_VERASE] = host->c_cc[VERASE];
1965     target->c_cc[TARGET_VKILL] = host->c_cc[VKILL];
1966     target->c_cc[TARGET_VEOF] = host->c_cc[VEOF];
1967     target->c_cc[TARGET_VTIME] = host->c_cc[VTIME];
1968     target->c_cc[TARGET_VMIN] = host->c_cc[VMIN];
1969     target->c_cc[TARGET_VSWTC] = host->c_cc[VSWTC];
1970     target->c_cc[TARGET_VSTART] = host->c_cc[VSTART];
1971     target->c_cc[TARGET_VSTOP] = host->c_cc[VSTOP];
1972     target->c_cc[TARGET_VSUSP] = host->c_cc[VSUSP];
1973     target->c_cc[TARGET_VEOL] = host->c_cc[VEOL];
1974     target->c_cc[TARGET_VREPRINT] = host->c_cc[VREPRINT];
1975     target->c_cc[TARGET_VDISCARD] = host->c_cc[VDISCARD];
1976     target->c_cc[TARGET_VWERASE] = host->c_cc[VWERASE];
1977     target->c_cc[TARGET_VLNEXT] = host->c_cc[VLNEXT];
1978     target->c_cc[TARGET_VEOL2] = host->c_cc[VEOL2];
1979 }
1980
1981 StructEntry struct_termios_def = {
1982     .convert = { host_to_target_termios, target_to_host_termios },
1983     .size = { sizeof(struct target_termios), sizeof(struct host_termios) },
1984     .align = { __alignof__(struct target_termios), __alignof__(struct host_termios) },
1985 };
1986
1987 static bitmask_transtbl mmap_flags_tbl[] = {
1988         { TARGET_MAP_SHARED, TARGET_MAP_SHARED, MAP_SHARED, MAP_SHARED },
1989         { TARGET_MAP_PRIVATE, TARGET_MAP_PRIVATE, MAP_PRIVATE, MAP_PRIVATE },
1990         { TARGET_MAP_FIXED, TARGET_MAP_FIXED, MAP_FIXED, MAP_FIXED },
1991         { TARGET_MAP_ANONYMOUS, TARGET_MAP_ANONYMOUS, MAP_ANONYMOUS, MAP_ANONYMOUS },
1992         { TARGET_MAP_GROWSDOWN, TARGET_MAP_GROWSDOWN, MAP_GROWSDOWN, MAP_GROWSDOWN },
1993         { TARGET_MAP_DENYWRITE, TARGET_MAP_DENYWRITE, MAP_DENYWRITE, MAP_DENYWRITE },
1994         { TARGET_MAP_EXECUTABLE, TARGET_MAP_EXECUTABLE, MAP_EXECUTABLE, MAP_EXECUTABLE },
1995         { TARGET_MAP_LOCKED, TARGET_MAP_LOCKED, MAP_LOCKED, MAP_LOCKED },
1996         { 0, 0, 0, 0 }
1997 };
1998
1999 static bitmask_transtbl fcntl_flags_tbl[] = {
2000         { TARGET_O_ACCMODE,   TARGET_O_WRONLY,    O_ACCMODE,   O_WRONLY,    },
2001         { TARGET_O_ACCMODE,   TARGET_O_RDWR,      O_ACCMODE,   O_RDWR,      },
2002         { TARGET_O_CREAT,     TARGET_O_CREAT,     O_CREAT,     O_CREAT,     },
2003         { TARGET_O_EXCL,      TARGET_O_EXCL,      O_EXCL,      O_EXCL,      },
2004         { TARGET_O_NOCTTY,    TARGET_O_NOCTTY,    O_NOCTTY,    O_NOCTTY,    },
2005         { TARGET_O_TRUNC,     TARGET_O_TRUNC,     O_TRUNC,     O_TRUNC,     },
2006         { TARGET_O_APPEND,    TARGET_O_APPEND,    O_APPEND,    O_APPEND,    },
2007         { TARGET_O_NONBLOCK,  TARGET_O_NONBLOCK,  O_NONBLOCK,  O_NONBLOCK,  },
2008         { TARGET_O_SYNC,      TARGET_O_SYNC,      O_SYNC,      O_SYNC,      },
2009         { TARGET_FASYNC,      TARGET_FASYNC,      FASYNC,      FASYNC,      },
2010         { TARGET_O_DIRECTORY, TARGET_O_DIRECTORY, O_DIRECTORY, O_DIRECTORY, },
2011         { TARGET_O_NOFOLLOW,  TARGET_O_NOFOLLOW,  O_NOFOLLOW,  O_NOFOLLOW,  },
2012         { TARGET_O_LARGEFILE, TARGET_O_LARGEFILE, O_LARGEFILE, O_LARGEFILE, },
2013 #if defined(O_DIRECT)
2014         { TARGET_O_DIRECT,    TARGET_O_DIRECT,    O_DIRECT,    O_DIRECT,    },
2015 #endif
2016         { 0, 0, 0, 0 }
2017 };
2018
2019 #if defined(TARGET_I386)
2020
2021 /* NOTE: there is really one LDT for all the threads */
2022 uint8_t *ldt_table;
2023
2024 static int read_ldt(target_ulong ptr, unsigned long bytecount)
2025 {
2026     int size;
2027     void *p;
2028
2029     if (!ldt_table)
2030         return 0;
2031     size = TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE;
2032     if (size > bytecount)
2033         size = bytecount;
2034     p = lock_user(ptr, size, 0);
2035     /* ??? Shoudl this by byteswapped?  */
2036     memcpy(p, ldt_table, size);
2037     unlock_user(p, ptr, size);
2038     return size;
2039 }
2040
2041 /* XXX: add locking support */
2042 static int write_ldt(CPUX86State *env,
2043                      target_ulong ptr, unsigned long bytecount, int oldmode)
2044 {
2045     struct target_modify_ldt_ldt_s ldt_info;
2046     struct target_modify_ldt_ldt_s *target_ldt_info;
2047     int seg_32bit, contents, read_exec_only, limit_in_pages;
2048     int seg_not_present, useable;
2049     uint32_t *lp, entry_1, entry_2;
2050
2051     if (bytecount != sizeof(ldt_info))
2052         return -EINVAL;
2053     lock_user_struct(target_ldt_info, ptr, 1);
2054     ldt_info.entry_number = tswap32(target_ldt_info->entry_number);
2055     ldt_info.base_addr = tswapl(target_ldt_info->base_addr);
2056     ldt_info.limit = tswap32(target_ldt_info->limit);
2057     ldt_info.flags = tswap32(target_ldt_info->flags);
2058     unlock_user_struct(target_ldt_info, ptr, 0);
2059
2060     if (ldt_info.entry_number >= TARGET_LDT_ENTRIES)
2061         return -EINVAL;
2062     seg_32bit = ldt_info.flags & 1;
2063     contents = (ldt_info.flags >> 1) & 3;
2064     read_exec_only = (ldt_info.flags >> 3) & 1;
2065     limit_in_pages = (ldt_info.flags >> 4) & 1;
2066     seg_not_present = (ldt_info.flags >> 5) & 1;
2067     useable = (ldt_info.flags >> 6) & 1;
2068
2069     if (contents == 3) {
2070         if (oldmode)
2071             return -EINVAL;
2072         if (seg_not_present == 0)
2073             return -EINVAL;
2074     }
2075     /* allocate the LDT */
2076     if (!ldt_table) {
2077         ldt_table = malloc(TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE);
2078         if (!ldt_table)
2079             return -ENOMEM;
2080         memset(ldt_table, 0, TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE);
2081         env->ldt.base = h2g(ldt_table);
2082         env->ldt.limit = 0xffff;
2083     }
2084
2085     /* NOTE: same code as Linux kernel */
2086     /* Allow LDTs to be cleared by the user. */
2087     if (ldt_info.base_addr == 0 && ldt_info.limit == 0) {
2088         if (oldmode ||
2089             (contents == 0              &&
2090              read_exec_only == 1        &&
2091              seg_32bit == 0             &&
2092              limit_in_pages == 0        &&
2093              seg_not_present == 1       &&
2094              useable == 0 )) {
2095             entry_1 = 0;
2096             entry_2 = 0;
2097             goto install;
2098         }
2099     }
2100
2101     entry_1 = ((ldt_info.base_addr & 0x0000ffff) << 16) |
2102         (ldt_info.limit & 0x0ffff);
2103     entry_2 = (ldt_info.base_addr & 0xff000000) |
2104         ((ldt_info.base_addr & 0x00ff0000) >> 16) |
2105         (ldt_info.limit & 0xf0000) |
2106         ((read_exec_only ^ 1) << 9) |
2107         (contents << 10) |
2108         ((seg_not_present ^ 1) << 15) |
2109         (seg_32bit << 22) |
2110         (limit_in_pages << 23) |
2111         0x7000;
2112     if (!oldmode)
2113         entry_2 |= (useable << 20);
2114
2115     /* Install the new entry ...  */
2116 install:
2117     lp = (uint32_t *)(ldt_table + (ldt_info.entry_number << 3));
2118     lp[0] = tswap32(entry_1);
2119     lp[1] = tswap32(entry_2);
2120     return 0;
2121 }
2122
2123 /* specific and weird i386 syscalls */
2124 int do_modify_ldt(CPUX86State *env, int func, target_ulong ptr, unsigned long bytecount)
2125 {
2126     int ret = -ENOSYS;
2127
2128     switch (func) {
2129     case 0:
2130         ret = read_ldt(ptr, bytecount);
2131         break;
2132     case 1:
2133         ret = write_ldt(env, ptr, bytecount, 1);
2134         break;
2135     case 0x11:
2136         ret = write_ldt(env, ptr, bytecount, 0);
2137         break;
2138     }
2139     return ret;
2140 }
2141
2142 #endif /* defined(TARGET_I386) */
2143
2144 /* this stack is the equivalent of the kernel stack associated with a
2145    thread/process */
2146 #define NEW_STACK_SIZE 8192
2147
2148 static int clone_func(void *arg)
2149 {
2150     CPUState *env = arg;
2151     cpu_loop(env);
2152     /* never exits */
2153     return 0;
2154 }
2155
2156 int do_fork(CPUState *env, unsigned int flags, unsigned long newsp)
2157 {
2158     int ret;
2159     TaskState *ts;
2160     uint8_t *new_stack;
2161     CPUState *new_env;
2162
2163     if (flags & CLONE_VM) {
2164         ts = malloc(sizeof(TaskState) + NEW_STACK_SIZE);
2165         memset(ts, 0, sizeof(TaskState));
2166         new_stack = ts->stack;
2167         ts->used = 1;
2168         /* add in task state list */
2169         ts->next = first_task_state;
2170         first_task_state = ts;
2171         /* we create a new CPU instance. */
2172         new_env = cpu_copy(env);
2173 #if defined(TARGET_I386)
2174         if (!newsp)
2175             newsp = env->regs[R_ESP];
2176         new_env->regs[R_ESP] = newsp;
2177         new_env->regs[R_EAX] = 0;
2178 #elif defined(TARGET_ARM)
2179         if (!newsp)
2180             newsp = env->regs[13];
2181         new_env->regs[13] = newsp;
2182         new_env->regs[0] = 0;
2183 #elif defined(TARGET_SPARC)
2184         if (!newsp)
2185             newsp = env->regwptr[22];
2186         new_env->regwptr[22] = newsp;
2187         new_env->regwptr[0] = 0;
2188         /* XXXXX */
2189         printf ("HELPME: %s:%d\n", __FILE__, __LINE__);
2190 #elif defined(TARGET_M68K)
2191         if (!newsp)
2192             newsp = env->aregs[7];
2193         new_env->aregs[7] = newsp;
2194         new_env->dregs[0] = 0;
2195         /* ??? is this sufficient?  */
2196 #elif defined(TARGET_MIPS)
2197         if (!newsp)
2198             newsp = env->gpr[29][env->current_tc];
2199         new_env->gpr[29][env->current_tc] = newsp;
2200 #elif defined(TARGET_PPC)
2201         if (!newsp)
2202             newsp = env->gpr[1];
2203         new_env->gpr[1] = newsp;
2204         {
2205             int i;
2206             for (i = 7; i < 32; i++)
2207                 new_env->gpr[i] = 0;
2208         }
2209 #elif defined(TARGET_SH4)
2210         if (!newsp)
2211           newsp = env->gregs[15];
2212         new_env->gregs[15] = newsp;
2213         /* XXXXX */
2214 #elif defined(TARGET_ALPHA)
2215        if (!newsp)
2216          newsp = env->ir[30];
2217        new_env->ir[30] = newsp;
2218         /* ? */
2219         {
2220             int i;
2221             for (i = 7; i < 30; i++)
2222                 new_env->ir[i] = 0;
2223         }
2224 #else
2225 #error unsupported target CPU
2226 #endif
2227         new_env->opaque = ts;
2228 #ifdef __ia64__
2229         ret = __clone2(clone_func, new_stack + NEW_STACK_SIZE, flags, new_env);
2230 #else
2231         ret = clone(clone_func, new_stack + NEW_STACK_SIZE, flags, new_env);
2232 #endif
2233     } else {
2234         /* if no CLONE_VM, we consider it is a fork */
2235         if ((flags & ~CSIGNAL) != 0)
2236             return -EINVAL;
2237         ret = fork();
2238     }
2239     return ret;
2240 }
2241
2242 static long do_fcntl(int fd, int cmd, target_ulong arg)
2243 {
2244     struct flock fl;
2245     struct target_flock *target_fl;
2246     struct flock64 fl64;
2247     struct target_flock64 *target_fl64;
2248     long ret;
2249
2250     switch(cmd) {
2251     case TARGET_F_GETLK:
2252         lock_user_struct(target_fl, arg, 1);
2253         fl.l_type = tswap16(target_fl->l_type);
2254         fl.l_whence = tswap16(target_fl->l_whence);
2255         fl.l_start = tswapl(target_fl->l_start);
2256         fl.l_len = tswapl(target_fl->l_len);
2257         fl.l_pid = tswapl(target_fl->l_pid);
2258         unlock_user_struct(target_fl, arg, 0);
2259         ret = fcntl(fd, cmd, &fl);
2260         if (ret == 0) {
2261             lock_user_struct(target_fl, arg, 0);
2262             target_fl->l_type = tswap16(fl.l_type);
2263             target_fl->l_whence = tswap16(fl.l_whence);
2264             target_fl->l_start = tswapl(fl.l_start);
2265             target_fl->l_len = tswapl(fl.l_len);
2266             target_fl->l_pid = tswapl(fl.l_pid);
2267             unlock_user_struct(target_fl, arg, 1);
2268         }
2269         break;
2270
2271     case TARGET_F_SETLK:
2272     case TARGET_F_SETLKW:
2273         lock_user_struct(target_fl, arg, 1);
2274         fl.l_type = tswap16(target_fl->l_type);
2275         fl.l_whence = tswap16(target_fl->l_whence);
2276         fl.l_start = tswapl(target_fl->l_start);
2277         fl.l_len = tswapl(target_fl->l_len);
2278         fl.l_pid = tswapl(target_fl->l_pid);
2279         unlock_user_struct(target_fl, arg, 0);
2280         ret = fcntl(fd, cmd, &fl);
2281         break;
2282
2283     case TARGET_F_GETLK64:
2284         lock_user_struct(target_fl64, arg, 1);
2285         fl64.l_type = tswap16(target_fl64->l_type) >> 1;
2286         fl64.l_whence = tswap16(target_fl64->l_whence);
2287         fl64.l_start = tswapl(target_fl64->l_start);
2288         fl64.l_len = tswapl(target_fl64->l_len);
2289         fl64.l_pid = tswap16(target_fl64->l_pid);
2290         unlock_user_struct(target_fl64, arg, 0);
2291         ret = fcntl(fd, cmd >> 1, &fl64);
2292         if (ret == 0) {
2293             lock_user_struct(target_fl64, arg, 0);
2294             target_fl64->l_type = tswap16(fl64.l_type) >> 1;
2295             target_fl64->l_whence = tswap16(fl64.l_whence);
2296             target_fl64->l_start = tswapl(fl64.l_start);
2297             target_fl64->l_len = tswapl(fl64.l_len);
2298             target_fl64->l_pid = tswapl(fl64.l_pid);
2299             unlock_user_struct(target_fl64, arg, 1);
2300         }
2301                 break;
2302     case TARGET_F_SETLK64:
2303     case TARGET_F_SETLKW64:
2304         lock_user_struct(target_fl64, arg, 1);
2305         fl64.l_type = tswap16(target_fl64->l_type) >> 1;
2306         fl64.l_whence = tswap16(target_fl64->l_whence);
2307         fl64.l_start = tswapl(target_fl64->l_start);
2308         fl64.l_len = tswapl(target_fl64->l_len);
2309         fl64.l_pid = tswap16(target_fl64->l_pid);
2310         unlock_user_struct(target_fl64, arg, 0);
2311                 ret = fcntl(fd, cmd >> 1, &fl64);
2312         break;
2313
2314     case F_GETFL:
2315         ret = fcntl(fd, cmd, arg);
2316         ret = host_to_target_bitmask(ret, fcntl_flags_tbl);
2317         break;
2318
2319     case F_SETFL:
2320         ret = fcntl(fd, cmd, target_to_host_bitmask(arg, fcntl_flags_tbl));
2321         break;
2322
2323     default:
2324         ret = fcntl(fd, cmd, arg);
2325         break;
2326     }
2327     return ret;
2328 }
2329
2330 #ifdef USE_UID16
2331
2332 static inline int high2lowuid(int uid)
2333 {
2334     if (uid > 65535)
2335         return 65534;
2336     else
2337         return uid;
2338 }
2339
2340 static inline int high2lowgid(int gid)
2341 {
2342     if (gid > 65535)
2343         return 65534;
2344     else
2345         return gid;
2346 }
2347
2348 static inline int low2highuid(int uid)
2349 {
2350     if ((int16_t)uid == -1)
2351         return -1;
2352     else
2353         return uid;
2354 }
2355
2356 static inline int low2highgid(int gid)
2357 {
2358     if ((int16_t)gid == -1)
2359         return -1;
2360     else
2361         return gid;
2362 }
2363
2364 #endif /* USE_UID16 */
2365
2366 void syscall_init(void)
2367 {
2368     IOCTLEntry *ie;
2369     const argtype *arg_type;
2370     int size;
2371
2372 #define STRUCT(name, list...) thunk_register_struct(STRUCT_ ## name, #name, struct_ ## name ## _def);
2373 #define STRUCT_SPECIAL(name) thunk_register_struct_direct(STRUCT_ ## name, #name, &struct_ ## name ## _def);
2374 #include "syscall_types.h"
2375 #undef STRUCT
2376 #undef STRUCT_SPECIAL
2377
2378     /* we patch the ioctl size if necessary. We rely on the fact that
2379        no ioctl has all the bits at '1' in the size field */
2380     ie = ioctl_entries;
2381     while (ie->target_cmd != 0) {
2382         if (((ie->target_cmd >> TARGET_IOC_SIZESHIFT) & TARGET_IOC_SIZEMASK) ==
2383             TARGET_IOC_SIZEMASK) {
2384             arg_type = ie->arg_type;
2385             if (arg_type[0] != TYPE_PTR) {
2386                 fprintf(stderr, "cannot patch size for ioctl 0x%x\n",
2387                         ie->target_cmd);
2388                 exit(1);
2389             }
2390             arg_type++;
2391             size = thunk_type_size(arg_type, 0);
2392             ie->target_cmd = (ie->target_cmd &
2393                               ~(TARGET_IOC_SIZEMASK << TARGET_IOC_SIZESHIFT)) |
2394                 (size << TARGET_IOC_SIZESHIFT);
2395         }
2396         /* automatic consistency check if same arch */
2397 #if defined(__i386__) && defined(TARGET_I386)
2398         if (ie->target_cmd != ie->host_cmd) {
2399             fprintf(stderr, "ERROR: ioctl: target=0x%x host=0x%x\n",
2400                     ie->target_cmd, ie->host_cmd);
2401         }
2402 #endif
2403         ie++;
2404     }
2405 }
2406
2407 static inline uint64_t target_offset64(uint32_t word0, uint32_t word1)
2408 {
2409 #ifdef TARGET_WORDS_BIG_ENDIAN
2410     return ((uint64_t)word0 << 32) | word1;
2411 #else
2412     return ((uint64_t)word1 << 32) | word0;
2413 #endif
2414 }
2415
2416 #ifdef TARGET_NR_truncate64
2417 static inline long target_truncate64(void *cpu_env, const char *arg1,
2418                                      long arg2, long arg3, long arg4)
2419 {
2420 #ifdef TARGET_ARM
2421     if (((CPUARMState *)cpu_env)->eabi)
2422       {
2423         arg2 = arg3;
2424         arg3 = arg4;
2425       }
2426 #endif
2427     return get_errno(truncate64(arg1, target_offset64(arg2, arg3)));
2428 }
2429 #endif
2430
2431 #ifdef TARGET_NR_ftruncate64
2432 static inline long target_ftruncate64(void *cpu_env, long arg1, long arg2,
2433                                       long arg3, long arg4)
2434 {
2435 #ifdef TARGET_ARM
2436     if (((CPUARMState *)cpu_env)->eabi)
2437       {
2438         arg2 = arg3;
2439         arg3 = arg4;
2440       }
2441 #endif
2442     return get_errno(ftruncate64(arg1, target_offset64(arg2, arg3)));
2443 }
2444 #endif
2445
2446 static inline void target_to_host_timespec(struct timespec *host_ts,
2447                                            target_ulong target_addr)
2448 {
2449     struct target_timespec *target_ts;
2450
2451     lock_user_struct(target_ts, target_addr, 1);
2452     host_ts->tv_sec = tswapl(target_ts->tv_sec);
2453     host_ts->tv_nsec = tswapl(target_ts->tv_nsec);
2454     unlock_user_struct(target_ts, target_addr, 0);
2455 }
2456
2457 static inline void host_to_target_timespec(target_ulong target_addr,
2458                                            struct timespec *host_ts)
2459 {
2460     struct target_timespec *target_ts;
2461
2462     lock_user_struct(target_ts, target_addr, 0);
2463     target_ts->tv_sec = tswapl(host_ts->tv_sec);
2464     target_ts->tv_nsec = tswapl(host_ts->tv_nsec);
2465     unlock_user_struct(target_ts, target_addr, 1);
2466 }
2467
2468 long do_syscall(void *cpu_env, int num, long arg1, long arg2, long arg3,
2469                 long arg4, long arg5, long arg6)
2470 {
2471     long ret;
2472     struct stat st;
2473     struct statfs stfs;
2474     void *p;
2475
2476 #ifdef DEBUG
2477     gemu_log("syscall %d", num);
2478 #endif
2479     switch(num) {
2480     case TARGET_NR_exit:
2481 #ifdef HAVE_GPROF
2482         _mcleanup();
2483 #endif
2484         gdb_exit(cpu_env, arg1);
2485         /* XXX: should free thread stack and CPU env */
2486         _exit(arg1);
2487         ret = 0; /* avoid warning */
2488         break;
2489     case TARGET_NR_read:
2490         page_unprotect_range(arg2, arg3);
2491         p = lock_user(arg2, arg3, 0);
2492         ret = get_errno(read(arg1, p, arg3));
2493         unlock_user(p, arg2, ret);
2494         break;
2495     case TARGET_NR_write:
2496         p = lock_user(arg2, arg3, 1);
2497         ret = get_errno(write(arg1, p, arg3));
2498         unlock_user(p, arg2, 0);
2499         break;
2500     case TARGET_NR_open:
2501         p = lock_user_string(arg1);
2502         ret = get_errno(open(path(p),
2503                              target_to_host_bitmask(arg2, fcntl_flags_tbl),
2504                              arg3));
2505         unlock_user(p, arg1, 0);
2506         break;
2507 #if defined(TARGET_NR_openat) && defined(__NR_openat)
2508     case TARGET_NR_openat:
2509         if (!arg2) {
2510             ret = -EFAULT;
2511             goto fail;
2512         }
2513         p = lock_user_string(arg2);
2514         if (!access_ok(VERIFY_READ, p, 1))
2515             ret = -EFAULT;
2516         else
2517             ret = get_errno(sys_openat(arg1,
2518                                        path(p),
2519                                        target_to_host_bitmask(arg3, fcntl_flags_tbl),
2520                                        arg4));
2521         if (p)
2522             unlock_user(p, arg2, 0);
2523         break;
2524 #endif
2525     case TARGET_NR_close:
2526         ret = get_errno(close(arg1));
2527         break;
2528     case TARGET_NR_brk:
2529         ret = do_brk(arg1);
2530         break;
2531     case TARGET_NR_fork:
2532         ret = get_errno(do_fork(cpu_env, SIGCHLD, 0));
2533         break;
2534 #ifdef TARGET_NR_waitpid
2535     case TARGET_NR_waitpid:
2536         {
2537             int status;
2538             ret = get_errno(waitpid(arg1, &status, arg3));
2539             if (!is_error(ret) && arg2)
2540                 tput32(arg2, status);
2541         }
2542         break;
2543 #endif
2544 #ifdef TARGET_NR_creat /* not on alpha */
2545     case TARGET_NR_creat:
2546         p = lock_user_string(arg1);
2547         ret = get_errno(creat(p, arg2));
2548         unlock_user(p, arg1, 0);
2549         break;
2550 #endif
2551     case TARGET_NR_link:
2552         {
2553             void * p2;
2554             p = lock_user_string(arg1);
2555             p2 = lock_user_string(arg2);
2556             ret = get_errno(link(p, p2));
2557             unlock_user(p2, arg2, 0);
2558             unlock_user(p, arg1, 0);
2559         }
2560         break;
2561     case TARGET_NR_unlink:
2562         p = lock_user_string(arg1);
2563         ret = get_errno(unlink(p));
2564         unlock_user(p, arg1, 0);
2565         break;
2566     case TARGET_NR_execve:
2567         {
2568             char **argp, **envp;
2569             int argc, envc;
2570             target_ulong gp;
2571             target_ulong guest_argp;
2572             target_ulong guest_envp;
2573             target_ulong addr;
2574             char **q;
2575
2576             argc = 0;
2577             guest_argp = arg2;
2578             for (gp = guest_argp; tgetl(gp); gp++)
2579                 argc++;
2580             envc = 0;
2581             guest_envp = arg3;
2582             for (gp = guest_envp; tgetl(gp); gp++)
2583                 envc++;
2584
2585             argp = alloca((argc + 1) * sizeof(void *));
2586             envp = alloca((envc + 1) * sizeof(void *));
2587
2588             for (gp = guest_argp, q = argp; ;
2589                   gp += sizeof(target_ulong), q++) {
2590                 addr = tgetl(gp);
2591                 if (!addr)
2592                     break;
2593                 *q = lock_user_string(addr);
2594             }
2595             *q = NULL;
2596
2597             for (gp = guest_envp, q = envp; ;
2598                   gp += sizeof(target_ulong), q++) {
2599                 addr = tgetl(gp);
2600                 if (!addr)
2601                     break;
2602                 *q = lock_user_string(addr);
2603             }
2604             *q = NULL;
2605
2606             p = lock_user_string(arg1);
2607             ret = get_errno(execve(p, argp, envp));
2608             unlock_user(p, arg1, 0);
2609
2610             for (gp = guest_argp, q = argp; *q;
2611                   gp += sizeof(target_ulong), q++) {
2612                 addr = tgetl(gp);
2613                 unlock_user(*q, addr, 0);
2614             }
2615             for (gp = guest_envp, q = envp; *q;
2616                   gp += sizeof(target_ulong), q++) {
2617                 addr = tgetl(gp);
2618                 unlock_user(*q, addr, 0);
2619             }
2620         }
2621         break;
2622     case TARGET_NR_chdir:
2623         p = lock_user_string(arg1);
2624         ret = get_errno(chdir(p));
2625         unlock_user(p, arg1, 0);
2626         break;
2627 #ifdef TARGET_NR_time
2628     case TARGET_NR_time:
2629         {
2630             time_t host_time;
2631             ret = get_errno(time(&host_time));
2632             if (!is_error(ret) && arg1)
2633                 tputl(arg1, host_time);
2634         }
2635         break;
2636 #endif
2637     case TARGET_NR_mknod:
2638         p = lock_user_string(arg1);
2639         ret = get_errno(mknod(p, arg2, arg3));
2640         unlock_user(p, arg1, 0);
2641         break;
2642     case TARGET_NR_chmod:
2643         p = lock_user_string(arg1);
2644         ret = get_errno(chmod(p, arg2));
2645         unlock_user(p, arg1, 0);
2646         break;
2647 #ifdef TARGET_NR_break
2648     case TARGET_NR_break:
2649         goto unimplemented;
2650 #endif
2651 #ifdef TARGET_NR_oldstat
2652     case TARGET_NR_oldstat:
2653         goto unimplemented;
2654 #endif
2655     case TARGET_NR_lseek:
2656         ret = get_errno(lseek(arg1, arg2, arg3));
2657         break;
2658 #ifdef TARGET_NR_getxpid
2659     case TARGET_NR_getxpid:
2660 #else
2661     case TARGET_NR_getpid:
2662 #endif
2663         ret = get_errno(getpid());
2664         break;
2665     case TARGET_NR_mount:
2666                 {
2667                         /* need to look at the data field */
2668                         void *p2, *p3;
2669                         p = lock_user_string(arg1);
2670                         p2 = lock_user_string(arg2);
2671                         p3 = lock_user_string(arg3);
2672                         ret = get_errno(mount(p, p2, p3, (unsigned long)arg4, (const void *)arg5));
2673                         unlock_user(p, arg1, 0);
2674                         unlock_user(p2, arg2, 0);
2675                         unlock_user(p3, arg3, 0);
2676                         break;
2677                 }
2678 #ifdef TARGET_NR_umount
2679     case TARGET_NR_umount:
2680         p = lock_user_string(arg1);
2681         ret = get_errno(umount(p));
2682         unlock_user(p, arg1, 0);
2683         break;
2684 #endif
2685 #ifdef TARGET_NR_stime /* not on alpha */
2686     case TARGET_NR_stime:
2687         {
2688             time_t host_time;
2689             host_time = tgetl(arg1);
2690             ret = get_errno(stime(&host_time));
2691         }
2692         break;
2693 #endif
2694     case TARGET_NR_ptrace:
2695         goto unimplemented;
2696 #ifdef TARGET_NR_alarm /* not on alpha */
2697     case TARGET_NR_alarm:
2698         ret = alarm(arg1);
2699         break;
2700 #endif
2701 #ifdef TARGET_NR_oldfstat
2702     case TARGET_NR_oldfstat:
2703         goto unimplemented;
2704 #endif
2705 #ifdef TARGET_NR_pause /* not on alpha */
2706     case TARGET_NR_pause:
2707         ret = get_errno(pause());
2708         break;
2709 #endif
2710 #ifdef TARGET_NR_utime
2711     case TARGET_NR_utime:
2712         {
2713             struct utimbuf tbuf, *host_tbuf;
2714             struct target_utimbuf *target_tbuf;
2715             if (arg2) {
2716                 lock_user_struct(target_tbuf, arg2, 1);
2717                 tbuf.actime = tswapl(target_tbuf->actime);
2718                 tbuf.modtime = tswapl(target_tbuf->modtime);
2719                 unlock_user_struct(target_tbuf, arg2, 0);
2720                 host_tbuf = &tbuf;
2721             } else {
2722                 host_tbuf = NULL;
2723             }
2724             p = lock_user_string(arg1);
2725             ret = get_errno(utime(p, host_tbuf));
2726             unlock_user(p, arg1, 0);
2727         }
2728         break;
2729 #endif
2730     case TARGET_NR_utimes:
2731         {
2732             struct timeval *tvp, tv[2];
2733             if (arg2) {
2734                 target_to_host_timeval(&tv[0], arg2);
2735                 target_to_host_timeval(&tv[1],
2736                     arg2 + sizeof (struct target_timeval));
2737                 tvp = tv;
2738             } else {
2739                 tvp = NULL;
2740             }
2741             p = lock_user_string(arg1);
2742             ret = get_errno(utimes(p, tvp));
2743             unlock_user(p, arg1, 0);
2744         }
2745         break;
2746 #ifdef TARGET_NR_stty
2747     case TARGET_NR_stty:
2748         goto unimplemented;
2749 #endif
2750 #ifdef TARGET_NR_gtty
2751     case TARGET_NR_gtty:
2752         goto unimplemented;
2753 #endif
2754     case TARGET_NR_access:
2755         p = lock_user_string(arg1);
2756         ret = get_errno(access(p, arg2));
2757         unlock_user(p, arg1, 0);
2758         break;
2759 #ifdef TARGET_NR_nice /* not on alpha */
2760     case TARGET_NR_nice:
2761         ret = get_errno(nice(arg1));
2762         break;
2763 #endif
2764 #ifdef TARGET_NR_ftime
2765     case TARGET_NR_ftime:
2766         goto unimplemented;
2767 #endif
2768     case TARGET_NR_sync:
2769         sync();
2770         ret = 0;
2771         break;
2772     case TARGET_NR_kill:
2773         ret = get_errno(kill(arg1, arg2));
2774         break;
2775     case TARGET_NR_rename:
2776         {
2777             void *p2;
2778             p = lock_user_string(arg1);
2779             p2 = lock_user_string(arg2);
2780             ret = get_errno(rename(p, p2));
2781             unlock_user(p2, arg2, 0);
2782             unlock_user(p, arg1, 0);
2783         }
2784         break;
2785     case TARGET_NR_mkdir:
2786         p = lock_user_string(arg1);
2787         ret = get_errno(mkdir(p, arg2));
2788         unlock_user(p, arg1, 0);
2789         break;
2790     case TARGET_NR_rmdir:
2791         p = lock_user_string(arg1);
2792         ret = get_errno(rmdir(p));
2793         unlock_user(p, arg1, 0);
2794         break;
2795     case TARGET_NR_dup:
2796         ret = get_errno(dup(arg1));
2797         break;
2798     case TARGET_NR_pipe:
2799         {
2800             int host_pipe[2];
2801             ret = get_errno(pipe(host_pipe));
2802             if (!is_error(ret)) {
2803 #if defined(TARGET_MIPS)
2804                 CPUMIPSState *env = (CPUMIPSState*)cpu_env;
2805                 env->gpr[3][env->current_tc] = host_pipe[1];
2806                 ret = host_pipe[0];
2807 #else
2808                 tput32(arg1, host_pipe[0]);
2809                 tput32(arg1 + 4, host_pipe[1]);
2810 #endif
2811             }
2812         }
2813         break;
2814     case TARGET_NR_times:
2815         {
2816             struct target_tms *tmsp;
2817             struct tms tms;
2818             ret = get_errno(times(&tms));
2819             if (arg1) {
2820                 tmsp = lock_user(arg1, sizeof(struct target_tms), 0);
2821                 tmsp->tms_utime = tswapl(host_to_target_clock_t(tms.tms_utime));
2822                 tmsp->tms_stime = tswapl(host_to_target_clock_t(tms.tms_stime));
2823                 tmsp->tms_cutime = tswapl(host_to_target_clock_t(tms.tms_cutime));
2824                 tmsp->tms_cstime = tswapl(host_to_target_clock_t(tms.tms_cstime));
2825             }
2826             if (!is_error(ret))
2827                 ret = host_to_target_clock_t(ret);
2828         }
2829         break;
2830 #ifdef TARGET_NR_prof
2831     case TARGET_NR_prof:
2832         goto unimplemented;
2833 #endif
2834 #ifdef TARGET_NR_signal
2835     case TARGET_NR_signal:
2836         goto unimplemented;
2837 #endif
2838     case TARGET_NR_acct:
2839         p = lock_user_string(arg1);
2840         ret = get_errno(acct(path(p)));
2841         unlock_user(p, arg1, 0);
2842         break;
2843 #ifdef TARGET_NR_umount2 /* not on alpha */
2844     case TARGET_NR_umount2:
2845         p = lock_user_string(arg1);
2846         ret = get_errno(umount2(p, arg2));
2847         unlock_user(p, arg1, 0);
2848         break;
2849 #endif
2850 #ifdef TARGET_NR_lock
2851     case TARGET_NR_lock:
2852         goto unimplemented;
2853 #endif
2854     case TARGET_NR_ioctl:
2855         ret = do_ioctl(arg1, arg2, arg3);
2856         break;
2857     case TARGET_NR_fcntl:
2858         ret = get_errno(do_fcntl(arg1, arg2, arg3));
2859         break;
2860 #ifdef TARGET_NR_mpx
2861     case TARGET_NR_mpx:
2862         goto unimplemented;
2863 #endif
2864     case TARGET_NR_setpgid:
2865         ret = get_errno(setpgid(arg1, arg2));
2866         break;
2867 #ifdef TARGET_NR_ulimit
2868     case TARGET_NR_ulimit:
2869         goto unimplemented;
2870 #endif
2871 #ifdef TARGET_NR_oldolduname
2872     case TARGET_NR_oldolduname:
2873         goto unimplemented;
2874 #endif
2875     case TARGET_NR_umask:
2876         ret = get_errno(umask(arg1));
2877         break;
2878     case TARGET_NR_chroot:
2879         p = lock_user_string(arg1);
2880         ret = get_errno(chroot(p));
2881         unlock_user(p, arg1, 0);
2882         break;
2883     case TARGET_NR_ustat:
2884         goto unimplemented;
2885     case TARGET_NR_dup2:
2886         ret = get_errno(dup2(arg1, arg2));
2887         break;
2888 #ifdef TARGET_NR_getppid /* not on alpha */
2889     case TARGET_NR_getppid:
2890         ret = get_errno(getppid());
2891         break;
2892 #endif
2893     case TARGET_NR_getpgrp:
2894         ret = get_errno(getpgrp());
2895         break;
2896     case TARGET_NR_setsid:
2897         ret = get_errno(setsid());
2898         break;
2899 #ifdef TARGET_NR_sigaction
2900     case TARGET_NR_sigaction:
2901         {
2902 #if !defined(TARGET_MIPS)
2903             struct target_old_sigaction *old_act;
2904             struct target_sigaction act, oact, *pact;
2905             if (arg2) {
2906                 lock_user_struct(old_act, arg2, 1);
2907                 act._sa_handler = old_act->_sa_handler;
2908                 target_siginitset(&act.sa_mask, old_act->sa_mask);
2909                 act.sa_flags = old_act->sa_flags;
2910                 act.sa_restorer = old_act->sa_restorer;
2911                 unlock_user_struct(old_act, arg2, 0);
2912                 pact = &act;
2913             } else {
2914                 pact = NULL;
2915             }
2916             ret = get_errno(do_sigaction(arg1, pact, &oact));
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_mask = oact.sa_mask.sig[0];
2921                 old_act->sa_flags = oact.sa_flags;
2922                 old_act->sa_restorer = oact.sa_restorer;
2923                 unlock_user_struct(old_act, arg3, 1);
2924             }
2925 #else
2926             struct target_sigaction act, oact, *pact, *old_act;
2927
2928             if (arg2) {
2929                 lock_user_struct(old_act, arg2, 1);
2930                 act._sa_handler = old_act->_sa_handler;
2931                 target_siginitset(&act.sa_mask, old_act->sa_mask.sig[0]);
2932                 act.sa_flags = old_act->sa_flags;
2933                 unlock_user_struct(old_act, arg2, 0);
2934                 pact = &act;
2935             } else {
2936                 pact = NULL;
2937             }
2938
2939             ret = get_errno(do_sigaction(arg1, pact, &oact));
2940
2941             if (!is_error(ret) && arg3) {
2942                 lock_user_struct(old_act, arg3, 0);
2943                 old_act->_sa_handler = oact._sa_handler;
2944                 old_act->sa_flags = oact.sa_flags;
2945                 old_act->sa_mask.sig[0] = oact.sa_mask.sig[0];
2946                 old_act->sa_mask.sig[1] = 0;
2947                 old_act->sa_mask.sig[2] = 0;
2948                 old_act->sa_mask.sig[3] = 0;
2949                 unlock_user_struct(old_act, arg3, 1);
2950             }
2951 #endif
2952         }
2953         break;
2954 #endif
2955     case TARGET_NR_rt_sigaction:
2956         {
2957             struct target_sigaction *act;
2958             struct target_sigaction *oact;
2959
2960             if (arg2)
2961                 lock_user_struct(act, arg2, 1);
2962             else
2963                 act = NULL;
2964             if (arg3)
2965                 lock_user_struct(oact, arg3, 0);
2966             else
2967                 oact = NULL;
2968             ret = get_errno(do_sigaction(arg1, act, oact));
2969             if (arg2)
2970                 unlock_user_struct(act, arg2, 0);
2971             if (arg3)
2972                 unlock_user_struct(oact, arg3, 1);
2973         }
2974         break;
2975 #ifdef TARGET_NR_sgetmask /* not on alpha */
2976     case TARGET_NR_sgetmask:
2977         {
2978             sigset_t cur_set;
2979             target_ulong target_set;
2980             sigprocmask(0, NULL, &cur_set);
2981             host_to_target_old_sigset(&target_set, &cur_set);
2982             ret = target_set;
2983         }
2984         break;
2985 #endif
2986 #ifdef TARGET_NR_ssetmask /* not on alpha */
2987     case TARGET_NR_ssetmask:
2988         {
2989             sigset_t set, oset, cur_set;
2990             target_ulong target_set = arg1;
2991             sigprocmask(0, NULL, &cur_set);
2992             target_to_host_old_sigset(&set, &target_set);
2993             sigorset(&set, &set, &cur_set);
2994             sigprocmask(SIG_SETMASK, &set, &oset);
2995             host_to_target_old_sigset(&target_set, &oset);
2996             ret = target_set;
2997         }
2998         break;
2999 #endif
3000 #ifdef TARGET_NR_sigprocmask
3001     case TARGET_NR_sigprocmask:
3002         {
3003             int how = arg1;
3004             sigset_t set, oldset, *set_ptr;
3005
3006             if (arg2) {
3007                 switch(how) {
3008                 case TARGET_SIG_BLOCK:
3009                     how = SIG_BLOCK;
3010                     break;
3011                 case TARGET_SIG_UNBLOCK:
3012                     how = SIG_UNBLOCK;
3013                     break;
3014                 case TARGET_SIG_SETMASK:
3015                     how = SIG_SETMASK;
3016                     break;
3017                 default:
3018                     ret = -EINVAL;
3019                     goto fail;
3020                 }
3021                 p = lock_user(arg2, sizeof(target_sigset_t), 1);
3022                 target_to_host_old_sigset(&set, p);
3023                 unlock_user(p, arg2, 0);
3024                 set_ptr = &set;
3025             } else {
3026                 how = 0;
3027                 set_ptr = NULL;
3028             }
3029             ret = get_errno(sigprocmask(arg1, set_ptr, &oldset));
3030             if (!is_error(ret) && arg3) {
3031                 p = lock_user(arg3, sizeof(target_sigset_t), 0);
3032                 host_to_target_old_sigset(p, &oldset);
3033                 unlock_user(p, arg3, sizeof(target_sigset_t));
3034             }
3035         }
3036         break;
3037 #endif
3038     case TARGET_NR_rt_sigprocmask:
3039         {
3040             int how = arg1;
3041             sigset_t set, oldset, *set_ptr;
3042
3043             if (arg2) {
3044                 switch(how) {
3045                 case TARGET_SIG_BLOCK:
3046                     how = SIG_BLOCK;
3047                     break;
3048                 case TARGET_SIG_UNBLOCK:
3049                     how = SIG_UNBLOCK;
3050                     break;
3051                 case TARGET_SIG_SETMASK:
3052                     how = SIG_SETMASK;
3053                     break;
3054                 default:
3055                     ret = -EINVAL;
3056                     goto fail;
3057                 }
3058                 p = lock_user(arg2, sizeof(target_sigset_t), 1);
3059                 target_to_host_sigset(&set, p);
3060                 unlock_user(p, arg2, 0);
3061                 set_ptr = &set;
3062             } else {
3063                 how = 0;
3064                 set_ptr = NULL;
3065             }
3066             ret = get_errno(sigprocmask(how, set_ptr, &oldset));
3067             if (!is_error(ret) && arg3) {
3068                 p = lock_user(arg3, sizeof(target_sigset_t), 0);
3069                 host_to_target_sigset(p, &oldset);
3070                 unlock_user(p, arg3, sizeof(target_sigset_t));
3071             }
3072         }
3073         break;
3074 #ifdef TARGET_NR_sigpending
3075     case TARGET_NR_sigpending:
3076         {
3077             sigset_t set;
3078             ret = get_errno(sigpending(&set));
3079             if (!is_error(ret)) {
3080                 p = lock_user(arg1, sizeof(target_sigset_t), 0);
3081                 host_to_target_old_sigset(p, &set);
3082                 unlock_user(p, arg1, sizeof(target_sigset_t));
3083             }
3084         }
3085         break;
3086 #endif
3087     case TARGET_NR_rt_sigpending:
3088         {
3089             sigset_t set;
3090             ret = get_errno(sigpending(&set));
3091             if (!is_error(ret)) {
3092                 p = lock_user(arg1, sizeof(target_sigset_t), 0);
3093                 host_to_target_sigset(p, &set);
3094                 unlock_user(p, arg1, sizeof(target_sigset_t));
3095             }
3096         }
3097         break;
3098 #ifdef TARGET_NR_sigsuspend
3099     case TARGET_NR_sigsuspend:
3100         {
3101             sigset_t set;
3102             p = lock_user(arg1, sizeof(target_sigset_t), 1);
3103             target_to_host_old_sigset(&set, p);
3104             unlock_user(p, arg1, 0);
3105             ret = get_errno(sigsuspend(&set));
3106         }
3107         break;
3108 #endif
3109     case TARGET_NR_rt_sigsuspend:
3110         {
3111             sigset_t set;
3112             p = lock_user(arg1, sizeof(target_sigset_t), 1);
3113             target_to_host_sigset(&set, p);
3114             unlock_user(p, arg1, 0);
3115             ret = get_errno(sigsuspend(&set));
3116         }
3117         break;
3118     case TARGET_NR_rt_sigtimedwait:
3119         {
3120             sigset_t set;
3121             struct timespec uts, *puts;
3122             siginfo_t uinfo;
3123
3124             p = lock_user(arg1, sizeof(target_sigset_t), 1);
3125             target_to_host_sigset(&set, p);
3126             unlock_user(p, arg1, 0);
3127             if (arg3) {
3128                 puts = &uts;
3129                 target_to_host_timespec(puts, arg3);
3130             } else {
3131                 puts = NULL;
3132             }
3133             ret = get_errno(sigtimedwait(&set, &uinfo, puts));
3134             if (!is_error(ret) && arg2) {
3135                 p = lock_user(arg2, sizeof(target_sigset_t), 0);
3136                 host_to_target_siginfo(p, &uinfo);
3137                 unlock_user(p, arg2, sizeof(target_sigset_t));
3138             }
3139         }
3140         break;
3141     case TARGET_NR_rt_sigqueueinfo:
3142         {
3143             siginfo_t uinfo;
3144             p = lock_user(arg3, sizeof(target_sigset_t), 1);
3145             target_to_host_siginfo(&uinfo, p);
3146             unlock_user(p, arg1, 0);
3147             ret = get_errno(sys_rt_sigqueueinfo(arg1, arg2, &uinfo));
3148         }
3149         break;
3150 #ifdef TARGET_NR_sigreturn
3151     case TARGET_NR_sigreturn:
3152         /* NOTE: ret is eax, so not transcoding must be done */
3153         ret = do_sigreturn(cpu_env);
3154         break;
3155 #endif
3156     case TARGET_NR_rt_sigreturn:
3157         /* NOTE: ret is eax, so not transcoding must be done */
3158         ret = do_rt_sigreturn(cpu_env);
3159         break;
3160     case TARGET_NR_sethostname:
3161         p = lock_user_string(arg1);
3162         ret = get_errno(sethostname(p, arg2));
3163         unlock_user(p, arg1, 0);
3164         break;
3165     case TARGET_NR_setrlimit:
3166         {
3167             /* XXX: convert resource ? */
3168             int resource = arg1;
3169             struct target_rlimit *target_rlim;
3170             struct rlimit rlim;
3171             lock_user_struct(target_rlim, arg2, 1);
3172             rlim.rlim_cur = tswapl(target_rlim->rlim_cur);
3173             rlim.rlim_max = tswapl(target_rlim->rlim_max);
3174             unlock_user_struct(target_rlim, arg2, 0);
3175             ret = get_errno(setrlimit(resource, &rlim));
3176         }
3177         break;
3178     case TARGET_NR_getrlimit:
3179         {
3180             /* XXX: convert resource ? */
3181             int resource = arg1;
3182             struct target_rlimit *target_rlim;
3183             struct rlimit rlim;
3184
3185             ret = get_errno(getrlimit(resource, &rlim));
3186             if (!is_error(ret)) {
3187                 lock_user_struct(target_rlim, arg2, 0);
3188                 rlim.rlim_cur = tswapl(target_rlim->rlim_cur);
3189                 rlim.rlim_max = tswapl(target_rlim->rlim_max);
3190                 unlock_user_struct(target_rlim, arg2, 1);
3191             }
3192         }
3193         break;
3194     case TARGET_NR_getrusage:
3195         {
3196             struct rusage rusage;
3197             ret = get_errno(getrusage(arg1, &rusage));
3198             if (!is_error(ret)) {
3199                 host_to_target_rusage(arg2, &rusage);
3200             }
3201         }
3202         break;
3203     case TARGET_NR_gettimeofday:
3204         {
3205             struct timeval tv;
3206             ret = get_errno(gettimeofday(&tv, NULL));
3207             if (!is_error(ret)) {
3208                 host_to_target_timeval(arg1, &tv);
3209             }
3210         }
3211         break;
3212     case TARGET_NR_settimeofday:
3213         {
3214             struct timeval tv;
3215             target_to_host_timeval(&tv, arg1);
3216             ret = get_errno(settimeofday(&tv, NULL));
3217         }
3218         break;
3219 #ifdef TARGET_NR_select
3220     case TARGET_NR_select:
3221         {
3222             struct target_sel_arg_struct *sel;
3223             target_ulong inp, outp, exp, tvp;
3224             long nsel;
3225
3226             lock_user_struct(sel, arg1, 1);
3227             nsel = tswapl(sel->n);
3228             inp = tswapl(sel->inp);
3229             outp = tswapl(sel->outp);
3230             exp = tswapl(sel->exp);
3231             tvp = tswapl(sel->tvp);
3232             unlock_user_struct(sel, arg1, 0);
3233             ret = do_select(nsel, inp, outp, exp, tvp);
3234         }
3235         break;
3236 #endif
3237     case TARGET_NR_symlink:
3238         {
3239             void *p2;
3240             p = lock_user_string(arg1);
3241             p2 = lock_user_string(arg2);
3242             ret = get_errno(symlink(p, p2));
3243             unlock_user(p2, arg2, 0);
3244             unlock_user(p, arg1, 0);
3245         }
3246         break;
3247 #ifdef TARGET_NR_oldlstat
3248     case TARGET_NR_oldlstat:
3249         goto unimplemented;
3250 #endif
3251     case TARGET_NR_readlink:
3252         {
3253             void *p2;
3254             p = lock_user_string(arg1);
3255             p2 = lock_user(arg2, arg3, 0);
3256             ret = get_errno(readlink(path(p), p2, arg3));
3257             unlock_user(p2, arg2, ret);
3258             unlock_user(p, arg1, 0);
3259         }
3260         break;
3261 #ifdef TARGET_NR_uselib
3262     case TARGET_NR_uselib:
3263         goto unimplemented;
3264 #endif
3265 #ifdef TARGET_NR_swapon
3266     case TARGET_NR_swapon:
3267         p = lock_user_string(arg1);
3268         ret = get_errno(swapon(p, arg2));
3269         unlock_user(p, arg1, 0);
3270         break;
3271 #endif
3272     case TARGET_NR_reboot:
3273         goto unimplemented;
3274 #ifdef TARGET_NR_readdir
3275     case TARGET_NR_readdir:
3276         goto unimplemented;
3277 #endif
3278 #ifdef TARGET_NR_mmap
3279     case TARGET_NR_mmap:
3280 #if defined(TARGET_I386) || defined(TARGET_ARM) || defined(TARGET_M68K)
3281         {
3282             target_ulong *v;
3283             target_ulong v1, v2, v3, v4, v5, v6;
3284             v = lock_user(arg1, 6 * sizeof(target_ulong), 1);
3285             v1 = tswapl(v[0]);
3286             v2 = tswapl(v[1]);
3287             v3 = tswapl(v[2]);
3288             v4 = tswapl(v[3]);
3289             v5 = tswapl(v[4]);
3290             v6 = tswapl(v[5]);
3291             unlock_user(v, arg1, 0);
3292             ret = get_errno(target_mmap(v1, v2, v3,
3293                                         target_to_host_bitmask(v4, mmap_flags_tbl),
3294                                         v5, v6));
3295         }
3296 #else
3297         ret = get_errno(target_mmap(arg1, arg2, arg3,
3298                                     target_to_host_bitmask(arg4, mmap_flags_tbl),
3299                                     arg5,
3300                                     arg6));
3301 #endif
3302         break;
3303 #endif
3304 #ifdef TARGET_NR_mmap2
3305     case TARGET_NR_mmap2:
3306 #if defined(TARGET_SPARC) || defined(TARGET_MIPS)
3307 #define MMAP_SHIFT 12
3308 #else
3309 #define MMAP_SHIFT TARGET_PAGE_BITS
3310 #endif
3311         ret = get_errno(target_mmap(arg1, arg2, arg3,
3312                                     target_to_host_bitmask(arg4, mmap_flags_tbl),
3313                                     arg5,
3314                                     arg6 << MMAP_SHIFT));
3315         break;
3316 #endif
3317     case TARGET_NR_munmap:
3318         ret = get_errno(target_munmap(arg1, arg2));
3319         break;
3320     case TARGET_NR_mprotect:
3321         ret = get_errno(target_mprotect(arg1, arg2, arg3));
3322         break;
3323 #ifdef TARGET_NR_mremap
3324     case TARGET_NR_mremap:
3325         ret = get_errno(target_mremap(arg1, arg2, arg3, arg4, arg5));
3326         break;
3327 #endif
3328         /* ??? msync/mlock/munlock are broken for softmmu.  */
3329 #ifdef TARGET_NR_msync
3330     case TARGET_NR_msync:
3331         ret = get_errno(msync(g2h(arg1), arg2, arg3));
3332         break;
3333 #endif
3334 #ifdef TARGET_NR_mlock
3335     case TARGET_NR_mlock:
3336         ret = get_errno(mlock(g2h(arg1), arg2));
3337         break;
3338 #endif
3339 #ifdef TARGET_NR_munlock
3340     case TARGET_NR_munlock:
3341         ret = get_errno(munlock(g2h(arg1), arg2));
3342         break;
3343 #endif
3344 #ifdef TARGET_NR_mlockall
3345     case TARGET_NR_mlockall:
3346         ret = get_errno(mlockall(arg1));
3347         break;
3348 #endif
3349 #ifdef TARGET_NR_munlockall
3350     case TARGET_NR_munlockall:
3351         ret = get_errno(munlockall());
3352         break;
3353 #endif
3354     case TARGET_NR_truncate:
3355         p = lock_user_string(arg1);
3356         ret = get_errno(truncate(p, arg2));
3357         unlock_user(p, arg1, 0);
3358         break;
3359     case TARGET_NR_ftruncate:
3360         ret = get_errno(ftruncate(arg1, arg2));
3361         break;
3362     case TARGET_NR_fchmod:
3363         ret = get_errno(fchmod(arg1, arg2));
3364         break;
3365     case TARGET_NR_getpriority:
3366         ret = get_errno(getpriority(arg1, arg2));
3367         break;
3368     case TARGET_NR_setpriority:
3369         ret = get_errno(setpriority(arg1, arg2, arg3));
3370         break;
3371 #ifdef TARGET_NR_profil
3372     case TARGET_NR_profil:
3373         goto unimplemented;
3374 #endif
3375     case TARGET_NR_statfs:
3376         p = lock_user_string(arg1);
3377         ret = get_errno(statfs(path(p), &stfs));
3378         unlock_user(p, arg1, 0);
3379     convert_statfs:
3380         if (!is_error(ret)) {
3381             struct target_statfs *target_stfs;
3382
3383             lock_user_struct(target_stfs, arg2, 0);
3384             /* ??? put_user is probably wrong.  */
3385             put_user(stfs.f_type, &target_stfs->f_type);
3386             put_user(stfs.f_bsize, &target_stfs->f_bsize);
3387             put_user(stfs.f_blocks, &target_stfs->f_blocks);
3388             put_user(stfs.f_bfree, &target_stfs->f_bfree);
3389             put_user(stfs.f_bavail, &target_stfs->f_bavail);
3390             put_user(stfs.f_files, &target_stfs->f_files);
3391             put_user(stfs.f_ffree, &target_stfs->f_ffree);
3392             put_user(stfs.f_fsid.__val[0], &target_stfs->f_fsid.val[0]);
3393             put_user(stfs.f_fsid.__val[1], &target_stfs->f_fsid.val[1]);
3394             put_user(stfs.f_namelen, &target_stfs->f_namelen);
3395             unlock_user_struct(target_stfs, arg2, 1);
3396         }
3397         break;
3398     case TARGET_NR_fstatfs:
3399         ret = get_errno(fstatfs(arg1, &stfs));
3400         goto convert_statfs;
3401 #ifdef TARGET_NR_statfs64
3402     case TARGET_NR_statfs64:
3403         p = lock_user_string(arg1);
3404         ret = get_errno(statfs(path(p), &stfs));
3405         unlock_user(p, arg1, 0);
3406     convert_statfs64:
3407         if (!is_error(ret)) {
3408             struct target_statfs64 *target_stfs;
3409
3410             lock_user_struct(target_stfs, arg3, 0);
3411             /* ??? put_user is probably wrong.  */
3412             put_user(stfs.f_type, &target_stfs->f_type);
3413             put_user(stfs.f_bsize, &target_stfs->f_bsize);
3414             put_user(stfs.f_blocks, &target_stfs->f_blocks);
3415             put_user(stfs.f_bfree, &target_stfs->f_bfree);
3416             put_user(stfs.f_bavail, &target_stfs->f_bavail);
3417             put_user(stfs.f_files, &target_stfs->f_files);
3418             put_user(stfs.f_ffree, &target_stfs->f_ffree);
3419             put_user(stfs.f_fsid.__val[0], &target_stfs->f_fsid.val[0]);
3420             put_user(stfs.f_fsid.__val[1], &target_stfs->f_fsid.val[1]);
3421             put_user(stfs.f_namelen, &target_stfs->f_namelen);
3422             unlock_user_struct(target_stfs, arg3, 0);
3423         }
3424         break;
3425     case TARGET_NR_fstatfs64:
3426         ret = get_errno(fstatfs(arg1, &stfs));
3427         goto convert_statfs64;
3428 #endif
3429 #ifdef TARGET_NR_ioperm
3430     case TARGET_NR_ioperm:
3431         goto unimplemented;
3432 #endif
3433 #ifdef TARGET_NR_socketcall
3434     case TARGET_NR_socketcall:
3435         ret = do_socketcall(arg1, arg2);
3436         break;
3437 #endif
3438 #ifdef TARGET_NR_accept
3439     case TARGET_NR_accept:
3440         ret = do_accept(arg1, arg2, arg3);
3441         break;
3442 #endif
3443 #ifdef TARGET_NR_bind
3444     case TARGET_NR_bind:
3445         ret = do_bind(arg1, arg2, arg3);
3446         break;
3447 #endif
3448 #ifdef TARGET_NR_connect
3449     case TARGET_NR_connect:
3450         ret = do_connect(arg1, arg2, arg3);
3451         break;
3452 #endif
3453 #ifdef TARGET_NR_getpeername
3454     case TARGET_NR_getpeername:
3455         ret = do_getpeername(arg1, arg2, arg3);
3456         break;
3457 #endif
3458 #ifdef TARGET_NR_getsockname
3459     case TARGET_NR_getsockname:
3460         ret = do_getsockname(arg1, arg2, arg3);
3461         break;
3462 #endif
3463 #ifdef TARGET_NR_getsockopt
3464     case TARGET_NR_getsockopt:
3465         ret = do_getsockopt(arg1, arg2, arg3, arg4, arg5);
3466         break;
3467 #endif
3468 #ifdef TARGET_NR_listen
3469     case TARGET_NR_listen:
3470         ret = get_errno(listen(arg1, arg2));
3471         break;
3472 #endif
3473 #ifdef TARGET_NR_recv
3474     case TARGET_NR_recv:
3475         ret = do_recvfrom(arg1, arg2, arg3, arg4, 0, 0);
3476         break;
3477 #endif
3478 #ifdef TARGET_NR_recvfrom
3479     case TARGET_NR_recvfrom:
3480         ret = do_recvfrom(arg1, arg2, arg3, arg4, arg5, arg6);
3481         break;
3482 #endif
3483 #ifdef TARGET_NR_recvmsg
3484     case TARGET_NR_recvmsg:
3485         ret = do_sendrecvmsg(arg1, arg2, arg3, 0);
3486         break;
3487 #endif
3488 #ifdef TARGET_NR_send
3489     case TARGET_NR_send:
3490         ret = do_sendto(arg1, arg2, arg3, arg4, 0, 0);
3491         break;
3492 #endif
3493 #ifdef TARGET_NR_sendmsg
3494     case TARGET_NR_sendmsg:
3495         ret = do_sendrecvmsg(arg1, arg2, arg3, 1);
3496         break;
3497 #endif
3498 #ifdef TARGET_NR_sendto
3499     case TARGET_NR_sendto:
3500         ret = do_sendto(arg1, arg2, arg3, arg4, arg5, arg6);
3501         break;
3502 #endif
3503 #ifdef TARGET_NR_shutdown
3504     case TARGET_NR_shutdown:
3505         ret = get_errno(shutdown(arg1, arg2));
3506         break;
3507 #endif
3508 #ifdef TARGET_NR_socket
3509     case TARGET_NR_socket:
3510         ret = do_socket(arg1, arg2, arg3);
3511         break;
3512 #endif
3513 #ifdef TARGET_NR_socketpair
3514     case TARGET_NR_socketpair:
3515         ret = do_socketpair(arg1, arg2, arg3, arg4);
3516         break;
3517 #endif
3518 #ifdef TARGET_NR_setsockopt
3519     case TARGET_NR_setsockopt:
3520         ret = do_setsockopt(arg1, arg2, arg3, arg4, (socklen_t) arg5);
3521         break;
3522 #endif
3523
3524     case TARGET_NR_syslog:
3525         p = lock_user_string(arg2);
3526         ret = get_errno(sys_syslog((int)arg1, p, (int)arg3));
3527         unlock_user(p, arg2, 0);
3528         break;
3529
3530     case TARGET_NR_setitimer:
3531         {
3532             struct itimerval value, ovalue, *pvalue;
3533
3534             if (arg2) {
3535                 pvalue = &value;
3536                 target_to_host_timeval(&pvalue->it_interval,
3537                                        arg2);
3538                 target_to_host_timeval(&pvalue->it_value,
3539                                        arg2 + sizeof(struct target_timeval));
3540             } else {
3541                 pvalue = NULL;
3542             }
3543             ret = get_errno(setitimer(arg1, pvalue, &ovalue));
3544             if (!is_error(ret) && arg3) {
3545                 host_to_target_timeval(arg3,
3546                                        &ovalue.it_interval);
3547                 host_to_target_timeval(arg3 + sizeof(struct target_timeval),
3548                                        &ovalue.it_value);
3549             }
3550         }
3551         break;
3552     case TARGET_NR_getitimer:
3553         {
3554             struct itimerval value;
3555
3556             ret = get_errno(getitimer(arg1, &value));
3557             if (!is_error(ret) && arg2) {
3558                 host_to_target_timeval(arg2,
3559                                        &value.it_interval);
3560                 host_to_target_timeval(arg2 + sizeof(struct target_timeval),
3561                                        &value.it_value);
3562             }
3563         }
3564         break;
3565     case TARGET_NR_stat:
3566         p = lock_user_string(arg1);
3567         ret = get_errno(stat(path(p), &st));
3568         unlock_user(p, arg1, 0);
3569         goto do_stat;
3570     case TARGET_NR_lstat:
3571         p = lock_user_string(arg1);
3572         ret = get_errno(lstat(path(p), &st));
3573         unlock_user(p, arg1, 0);
3574         goto do_stat;
3575     case TARGET_NR_fstat:
3576         {
3577             ret = get_errno(fstat(arg1, &st));
3578         do_stat:
3579             if (!is_error(ret)) {
3580                 struct target_stat *target_st;
3581
3582                 lock_user_struct(target_st, arg2, 0);
3583 #if defined(TARGET_MIPS) || defined(TARGET_SPARC64)
3584                 target_st->st_dev = tswap32(st.st_dev);
3585 #else
3586                 target_st->st_dev = tswap16(st.st_dev);
3587 #endif
3588                 target_st->st_ino = tswapl(st.st_ino);
3589 #if defined(TARGET_PPC) || defined(TARGET_MIPS)
3590                 target_st->st_mode = tswapl(st.st_mode); /* XXX: check this */
3591                 target_st->st_uid = tswap32(st.st_uid);
3592                 target_st->st_gid = tswap32(st.st_gid);
3593 #elif defined(TARGET_SPARC64)
3594                 target_st->st_mode = tswap32(st.st_mode);
3595                 target_st->st_uid = tswap32(st.st_uid);
3596                 target_st->st_gid = tswap32(st.st_gid);
3597 #else
3598                 target_st->st_mode = tswap16(st.st_mode);
3599                 target_st->st_uid = tswap16(st.st_uid);
3600                 target_st->st_gid = tswap16(st.st_gid);
3601 #endif
3602 #if defined(TARGET_MIPS)
3603                 /* If this is the same on PPC, then just merge w/ the above ifdef */
3604                 target_st->st_nlink = tswapl(st.st_nlink);
3605                 target_st->st_rdev = tswapl(st.st_rdev);
3606 #elif defined(TARGET_SPARC64)
3607                 target_st->st_nlink = tswap32(st.st_nlink);
3608                 target_st->st_rdev = tswap32(st.st_rdev);
3609 #else
3610                 target_st->st_nlink = tswap16(st.st_nlink);
3611                 target_st->st_rdev = tswap16(st.st_rdev);
3612 #endif
3613                 target_st->st_size = tswapl(st.st_size);
3614                 target_st->st_blksize = tswapl(st.st_blksize);
3615                 target_st->st_blocks = tswapl(st.st_blocks);
3616                 target_st->target_st_atime = tswapl(st.st_atime);
3617                 target_st->target_st_mtime = tswapl(st.st_mtime);
3618                 target_st->target_st_ctime = tswapl(st.st_ctime);
3619                 unlock_user_struct(target_st, arg2, 1);
3620             }
3621         }
3622         break;
3623 #ifdef TARGET_NR_olduname
3624     case TARGET_NR_olduname:
3625         goto unimplemented;
3626 #endif
3627 #ifdef TARGET_NR_iopl
3628     case TARGET_NR_iopl:
3629         goto unimplemented;
3630 #endif
3631     case TARGET_NR_vhangup:
3632         ret = get_errno(vhangup());
3633         break;
3634 #ifdef TARGET_NR_idle
3635     case TARGET_NR_idle:
3636         goto unimplemented;
3637 #endif
3638 #ifdef TARGET_NR_syscall
3639     case TARGET_NR_syscall:
3640         ret = do_syscall(cpu_env,arg1 & 0xffff,arg2,arg3,arg4,arg5,arg6,0);
3641         break;
3642 #endif
3643     case TARGET_NR_wait4:
3644         {
3645             int status;
3646             target_long status_ptr = arg2;
3647             struct rusage rusage, *rusage_ptr;
3648             target_ulong target_rusage = arg4;
3649             if (target_rusage)
3650                 rusage_ptr = &rusage;
3651             else
3652                 rusage_ptr = NULL;
3653             ret = get_errno(wait4(arg1, &status, arg3, rusage_ptr));
3654             if (!is_error(ret)) {
3655                 if (status_ptr)
3656                     tputl(status_ptr, status);
3657                 if (target_rusage) {
3658                     host_to_target_rusage(target_rusage, &rusage);
3659                 }
3660             }
3661         }
3662         break;
3663 #ifdef TARGET_NR_swapoff
3664     case TARGET_NR_swapoff:
3665         p = lock_user_string(arg1);
3666         ret = get_errno(swapoff(p));
3667         unlock_user(p, arg1, 0);
3668         break;
3669 #endif
3670     case TARGET_NR_sysinfo:
3671         {
3672             struct target_sysinfo *target_value;
3673             struct sysinfo value;
3674             ret = get_errno(sysinfo(&value));
3675             if (!is_error(ret) && arg1)
3676             {
3677                 /* ??? __put_user is probably wrong.  */
3678                 lock_user_struct(target_value, arg1, 0);
3679                 __put_user(value.uptime, &target_value->uptime);
3680                 __put_user(value.loads[0], &target_value->loads[0]);
3681                 __put_user(value.loads[1], &target_value->loads[1]);
3682                 __put_user(value.loads[2], &target_value->loads[2]);
3683                 __put_user(value.totalram, &target_value->totalram);
3684                 __put_user(value.freeram, &target_value->freeram);
3685                 __put_user(value.sharedram, &target_value->sharedram);
3686                 __put_user(value.bufferram, &target_value->bufferram);
3687                 __put_user(value.totalswap, &target_value->totalswap);
3688                 __put_user(value.freeswap, &target_value->freeswap);
3689                 __put_user(value.procs, &target_value->procs);
3690                 __put_user(value.totalhigh, &target_value->totalhigh);
3691                 __put_user(value.freehigh, &target_value->freehigh);
3692                 __put_user(value.mem_unit, &target_value->mem_unit);
3693                 unlock_user_struct(target_value, arg1, 1);
3694             }
3695         }
3696         break;
3697 #ifdef TARGET_NR_ipc
3698     case TARGET_NR_ipc:
3699         ret = do_ipc(arg1, arg2, arg3, arg4, arg5, arg6);
3700         break;
3701 #endif
3702     case TARGET_NR_fsync:
3703         ret = get_errno(fsync(arg1));
3704         break;
3705     case TARGET_NR_clone:
3706         ret = get_errno(do_fork(cpu_env, arg1, arg2));
3707         break;
3708 #ifdef __NR_exit_group
3709         /* new thread calls */
3710     case TARGET_NR_exit_group:
3711         gdb_exit(cpu_env, arg1);
3712         ret = get_errno(exit_group(arg1));
3713         break;
3714 #endif
3715     case TARGET_NR_setdomainname:
3716         p = lock_user_string(arg1);
3717         ret = get_errno(setdomainname(p, arg2));
3718         unlock_user(p, arg1, 0);
3719         break;
3720     case TARGET_NR_uname:
3721         /* no need to transcode because we use the linux syscall */
3722         {
3723             struct new_utsname * buf;
3724
3725             lock_user_struct(buf, arg1, 0);
3726             ret = get_errno(sys_uname(buf));
3727             if (!is_error(ret)) {
3728                 /* Overrite the native machine name with whatever is being
3729                    emulated. */
3730                 strcpy (buf->machine, UNAME_MACHINE);
3731                 /* Allow the user to override the reported release.  */
3732                 if (qemu_uname_release && *qemu_uname_release)
3733                   strcpy (buf->release, qemu_uname_release);
3734             }
3735             unlock_user_struct(buf, arg1, 1);
3736         }
3737         break;
3738 #ifdef TARGET_I386
3739     case TARGET_NR_modify_ldt:
3740         ret = get_errno(do_modify_ldt(cpu_env, arg1, arg2, arg3));
3741         break;
3742 #if !defined(TARGET_X86_64)
3743     case TARGET_NR_vm86old:
3744         goto unimplemented;
3745     case TARGET_NR_vm86:
3746         ret = do_vm86(cpu_env, arg1, arg2);
3747         break;
3748 #endif
3749 #endif
3750     case TARGET_NR_adjtimex:
3751         goto unimplemented;
3752 #ifdef TARGET_NR_create_module
3753     case TARGET_NR_create_module:
3754 #endif
3755     case TARGET_NR_init_module:
3756     case TARGET_NR_delete_module:
3757 #ifdef TARGET_NR_get_kernel_syms
3758     case TARGET_NR_get_kernel_syms:
3759 #endif
3760         goto unimplemented;
3761     case TARGET_NR_quotactl:
3762         goto unimplemented;
3763     case TARGET_NR_getpgid:
3764         ret = get_errno(getpgid(arg1));
3765         break;
3766     case TARGET_NR_fchdir:
3767         ret = get_errno(fchdir(arg1));
3768         break;
3769 #ifdef TARGET_NR_bdflush /* not on x86_64 */
3770     case TARGET_NR_bdflush:
3771         goto unimplemented;
3772 #endif
3773 #ifdef TARGET_NR_sysfs
3774     case TARGET_NR_sysfs:
3775         goto unimplemented;
3776 #endif
3777     case TARGET_NR_personality:
3778         ret = get_errno(personality(arg1));
3779         break;
3780 #ifdef TARGET_NR_afs_syscall
3781     case TARGET_NR_afs_syscall:
3782         goto unimplemented;
3783 #endif
3784 #ifdef TARGET_NR__llseek /* Not on alpha */
3785     case TARGET_NR__llseek:
3786         {
3787 #if defined (__x86_64__)
3788             ret = get_errno(lseek(arg1, ((uint64_t )arg2 << 32) | arg3, arg5));
3789             tput64(arg4, ret);
3790 #else
3791             int64_t res;
3792             ret = get_errno(_llseek(arg1, arg2, arg3, &res, arg5));
3793             tput64(arg4, res);
3794 #endif
3795         }
3796         break;
3797 #endif
3798     case TARGET_NR_getdents:
3799 #if TARGET_LONG_SIZE != 4
3800         goto unimplemented;
3801 #warning not supported
3802 #elif TARGET_LONG_SIZE == 4 && HOST_LONG_SIZE == 8
3803         {
3804             struct target_dirent *target_dirp;
3805             struct dirent *dirp;
3806             long count = arg3;
3807
3808             dirp = malloc(count);
3809             if (!dirp)
3810                 return -ENOMEM;
3811
3812             ret = get_errno(sys_getdents(arg1, dirp, count));
3813             if (!is_error(ret)) {
3814                 struct dirent *de;
3815                 struct target_dirent *tde;
3816                 int len = ret;
3817                 int reclen, treclen;
3818                 int count1, tnamelen;
3819
3820                 count1 = 0;
3821                 de = dirp;
3822                 target_dirp = lock_user(arg2, count, 0);
3823                 tde = target_dirp;
3824                 while (len > 0) {
3825                     reclen = de->d_reclen;
3826                     treclen = reclen - (2 * (sizeof(long) - sizeof(target_long)));
3827                     tde->d_reclen = tswap16(treclen);
3828                     tde->d_ino = tswapl(de->d_ino);
3829                     tde->d_off = tswapl(de->d_off);
3830                     tnamelen = treclen - (2 * sizeof(target_long) + 2);
3831                     if (tnamelen > 256)
3832                         tnamelen = 256;
3833                     /* XXX: may not be correct */
3834                     strncpy(tde->d_name, de->d_name, tnamelen);
3835                     de = (struct dirent *)((char *)de + reclen);
3836                     len -= reclen;
3837                     tde = (struct target_dirent *)((char *)tde + treclen);
3838                     count1 += treclen;
3839                 }
3840                 ret = count1;
3841             }
3842             unlock_user(target_dirp, arg2, ret);
3843             free(dirp);
3844         }
3845 #else
3846         {
3847             struct dirent *dirp;
3848             long count = arg3;
3849
3850             dirp = lock_user(arg2, count, 0);
3851             ret = get_errno(sys_getdents(arg1, dirp, count));
3852             if (!is_error(ret)) {
3853                 struct dirent *de;
3854                 int len = ret;
3855                 int reclen;
3856                 de = dirp;
3857                 while (len > 0) {
3858                     reclen = de->d_reclen;
3859                     if (reclen > len)
3860                         break;
3861                     de->d_reclen = tswap16(reclen);
3862                     tswapls(&de->d_ino);
3863                     tswapls(&de->d_off);
3864                     de = (struct dirent *)((char *)de + reclen);
3865                     len -= reclen;
3866                 }
3867             }
3868             unlock_user(dirp, arg2, ret);
3869         }
3870 #endif
3871         break;
3872 #if defined(TARGET_NR_getdents64) && defined(__NR_getdents64)
3873     case TARGET_NR_getdents64:
3874         {
3875             struct dirent64 *dirp;
3876             long count = arg3;
3877             dirp = lock_user(arg2, count, 0);
3878             ret = get_errno(sys_getdents64(arg1, dirp, count));
3879             if (!is_error(ret)) {
3880                 struct dirent64 *de;
3881                 int len = ret;
3882                 int reclen;
3883                 de = dirp;
3884                 while (len > 0) {
3885                     reclen = de->d_reclen;
3886                     if (reclen > len)
3887                         break;
3888                     de->d_reclen = tswap16(reclen);
3889                     tswap64s(&de->d_ino);
3890                     tswap64s(&de->d_off);
3891                     de = (struct dirent64 *)((char *)de + reclen);
3892                     len -= reclen;
3893                 }
3894             }
3895             unlock_user(dirp, arg2, ret);
3896         }
3897         break;
3898 #endif /* TARGET_NR_getdents64 */
3899 #ifdef TARGET_NR__newselect
3900     case TARGET_NR__newselect:
3901         ret = do_select(arg1, arg2, arg3, arg4, arg5);
3902         break;
3903 #endif
3904 #ifdef TARGET_NR_poll
3905     case TARGET_NR_poll:
3906         {
3907             struct target_pollfd *target_pfd;
3908             unsigned int nfds = arg2;
3909             int timeout = arg3;
3910             struct pollfd *pfd;
3911             unsigned int i;
3912
3913             target_pfd = lock_user(arg1, sizeof(struct target_pollfd) * nfds, 1);
3914             pfd = alloca(sizeof(struct pollfd) * nfds);
3915             for(i = 0; i < nfds; i++) {
3916                 pfd[i].fd = tswap32(target_pfd[i].fd);
3917                 pfd[i].events = tswap16(target_pfd[i].events);
3918             }
3919             ret = get_errno(poll(pfd, nfds, timeout));
3920             if (!is_error(ret)) {
3921                 for(i = 0; i < nfds; i++) {
3922                     target_pfd[i].revents = tswap16(pfd[i].revents);
3923                 }
3924                 ret += nfds * (sizeof(struct target_pollfd)
3925                                - sizeof(struct pollfd));
3926             }
3927             unlock_user(target_pfd, arg1, ret);
3928         }
3929         break;
3930 #endif
3931     case TARGET_NR_flock:
3932         /* NOTE: the flock constant seems to be the same for every
3933            Linux platform */
3934         ret = get_errno(flock(arg1, arg2));
3935         break;
3936     case TARGET_NR_readv:
3937         {
3938             int count = arg3;
3939             struct iovec *vec;
3940
3941             vec = alloca(count * sizeof(struct iovec));
3942             lock_iovec(vec, arg2, count, 0);
3943             ret = get_errno(readv(arg1, vec, count));
3944             unlock_iovec(vec, arg2, count, 1);
3945         }
3946         break;
3947     case TARGET_NR_writev:
3948         {
3949             int count = arg3;
3950             struct iovec *vec;
3951
3952             vec = alloca(count * sizeof(struct iovec));
3953             lock_iovec(vec, arg2, count, 1);
3954             ret = get_errno(writev(arg1, vec, count));
3955             unlock_iovec(vec, arg2, count, 0);
3956         }
3957         break;
3958     case TARGET_NR_getsid:
3959         ret = get_errno(getsid(arg1));
3960         break;
3961 #if defined(TARGET_NR_fdatasync) /* Not on alpha (osf_datasync ?) */
3962     case TARGET_NR_fdatasync:
3963         ret = get_errno(fdatasync(arg1));
3964         break;
3965 #endif
3966     case TARGET_NR__sysctl:
3967         /* We don't implement this, but ENODIR is always a safe
3968            return value. */
3969         return -ENOTDIR;
3970     case TARGET_NR_sched_setparam:
3971         {
3972             struct sched_param *target_schp;
3973             struct sched_param schp;
3974
3975             lock_user_struct(target_schp, arg2, 1);
3976             schp.sched_priority = tswap32(target_schp->sched_priority);
3977             unlock_user_struct(target_schp, arg2, 0);
3978             ret = get_errno(sched_setparam(arg1, &schp));
3979         }
3980         break;
3981     case TARGET_NR_sched_getparam:
3982         {
3983             struct sched_param *target_schp;
3984             struct sched_param schp;
3985             ret = get_errno(sched_getparam(arg1, &schp));
3986             if (!is_error(ret)) {
3987                 lock_user_struct(target_schp, arg2, 0);
3988                 target_schp->sched_priority = tswap32(schp.sched_priority);
3989                 unlock_user_struct(target_schp, arg2, 1);
3990             }
3991         }
3992         break;
3993     case TARGET_NR_sched_setscheduler:
3994         {
3995             struct sched_param *target_schp;
3996             struct sched_param schp;
3997             lock_user_struct(target_schp, arg3, 1);
3998             schp.sched_priority = tswap32(target_schp->sched_priority);
3999             unlock_user_struct(target_schp, arg3, 0);
4000             ret = get_errno(sched_setscheduler(arg1, arg2, &schp));
4001         }
4002         break;
4003     case TARGET_NR_sched_getscheduler:
4004         ret = get_errno(sched_getscheduler(arg1));
4005         break;
4006     case TARGET_NR_sched_yield:
4007         ret = get_errno(sched_yield());
4008         break;
4009     case TARGET_NR_sched_get_priority_max:
4010         ret = get_errno(sched_get_priority_max(arg1));
4011         break;
4012     case TARGET_NR_sched_get_priority_min:
4013         ret = get_errno(sched_get_priority_min(arg1));
4014         break;
4015     case TARGET_NR_sched_rr_get_interval:
4016         {
4017             struct timespec ts;
4018             ret = get_errno(sched_rr_get_interval(arg1, &ts));
4019             if (!is_error(ret)) {
4020                 host_to_target_timespec(arg2, &ts);
4021             }
4022         }
4023         break;
4024     case TARGET_NR_nanosleep:
4025         {
4026             struct timespec req, rem;
4027             target_to_host_timespec(&req, arg1);
4028             ret = get_errno(nanosleep(&req, &rem));
4029             if (is_error(ret) && arg2) {
4030                 host_to_target_timespec(arg2, &rem);
4031             }
4032         }
4033         break;
4034 #ifdef TARGET_NR_query_module
4035     case TARGET_NR_query_module:
4036         goto unimplemented;
4037 #endif
4038 #ifdef TARGET_NR_nfsservctl
4039     case TARGET_NR_nfsservctl:
4040         goto unimplemented;
4041 #endif
4042     case TARGET_NR_prctl:
4043         switch (arg1)
4044             {
4045             case PR_GET_PDEATHSIG:
4046                 {
4047                     int deathsig;
4048                     ret = get_errno(prctl(arg1, &deathsig, arg3, arg4, arg5));
4049                     if (!is_error(ret) && arg2)
4050                         tput32(arg2, deathsig);
4051                 }
4052                 break;
4053             default:
4054                 ret = get_errno(prctl(arg1, arg2, arg3, arg4, arg5));
4055                 break;
4056             }
4057         break;
4058 #ifdef TARGET_NR_pread
4059     case TARGET_NR_pread:
4060         page_unprotect_range(arg2, arg3);
4061         p = lock_user(arg2, arg3, 0);
4062         ret = get_errno(pread(arg1, p, arg3, arg4));
4063         unlock_user(p, arg2, ret);
4064         break;
4065     case TARGET_NR_pwrite:
4066         p = lock_user(arg2, arg3, 1);
4067         ret = get_errno(pwrite(arg1, p, arg3, arg4));
4068         unlock_user(p, arg2, 0);
4069         break;
4070 #endif
4071     case TARGET_NR_getcwd:
4072         p = lock_user(arg1, arg2, 0);
4073         ret = get_errno(sys_getcwd1(p, arg2));
4074         unlock_user(p, arg1, ret);
4075         break;
4076     case TARGET_NR_capget:
4077         goto unimplemented;
4078     case TARGET_NR_capset:
4079         goto unimplemented;
4080     case TARGET_NR_sigaltstack:
4081         goto unimplemented;
4082     case TARGET_NR_sendfile:
4083         goto unimplemented;
4084 #ifdef TARGET_NR_getpmsg
4085     case TARGET_NR_getpmsg:
4086         goto unimplemented;
4087 #endif
4088 #ifdef TARGET_NR_putpmsg
4089     case TARGET_NR_putpmsg:
4090         goto unimplemented;
4091 #endif
4092 #ifdef TARGET_NR_vfork
4093     case TARGET_NR_vfork:
4094         ret = get_errno(do_fork(cpu_env, CLONE_VFORK | CLONE_VM | SIGCHLD, 0));
4095         break;
4096 #endif
4097 #ifdef TARGET_NR_ugetrlimit
4098     case TARGET_NR_ugetrlimit:
4099     {
4100         struct rlimit rlim;
4101         ret = get_errno(getrlimit(arg1, &rlim));
4102         if (!is_error(ret)) {
4103             struct target_rlimit *target_rlim;
4104             lock_user_struct(target_rlim, arg2, 0);
4105             target_rlim->rlim_cur = tswapl(rlim.rlim_cur);
4106             target_rlim->rlim_max = tswapl(rlim.rlim_max);
4107             unlock_user_struct(target_rlim, arg2, 1);
4108         }
4109         break;
4110     }
4111 #endif
4112 #ifdef TARGET_NR_truncate64
4113     case TARGET_NR_truncate64:
4114         p = lock_user_string(arg1);
4115         ret = target_truncate64(cpu_env, p, arg2, arg3, arg4);
4116         unlock_user(p, arg1, 0);
4117         break;
4118 #endif
4119 #ifdef TARGET_NR_ftruncate64
4120     case TARGET_NR_ftruncate64:
4121         ret = target_ftruncate64(cpu_env, arg1, arg2, arg3, arg4);
4122         break;
4123 #endif
4124 #ifdef TARGET_NR_stat64
4125     case TARGET_NR_stat64:
4126         p = lock_user_string(arg1);
4127         ret = get_errno(stat(path(p), &st));
4128         unlock_user(p, arg1, 0);
4129         goto do_stat64;
4130 #endif
4131 #ifdef TARGET_NR_lstat64
4132     case TARGET_NR_lstat64:
4133         p = lock_user_string(arg1);
4134         ret = get_errno(lstat(path(p), &st));
4135         unlock_user(p, arg1, 0);
4136         goto do_stat64;
4137 #endif
4138 #ifdef TARGET_NR_fstat64
4139     case TARGET_NR_fstat64:
4140         {
4141             ret = get_errno(fstat(arg1, &st));
4142         do_stat64:
4143             if (!is_error(ret)) {
4144 #ifdef TARGET_ARM
4145                 if (((CPUARMState *)cpu_env)->eabi) {
4146                     struct target_eabi_stat64 *target_st;
4147                     lock_user_struct(target_st, arg2, 1);
4148                     memset(target_st, 0, sizeof(struct target_eabi_stat64));
4149                     /* put_user is probably wrong.  */
4150                     put_user(st.st_dev, &target_st->st_dev);
4151                     put_user(st.st_ino, &target_st->st_ino);
4152 #ifdef TARGET_STAT64_HAS_BROKEN_ST_INO
4153                     put_user(st.st_ino, &target_st->__st_ino);
4154 #endif
4155                     put_user(st.st_mode, &target_st->st_mode);
4156                     put_user(st.st_nlink, &target_st->st_nlink);
4157                     put_user(st.st_uid, &target_st->st_uid);
4158                     put_user(st.st_gid, &target_st->st_gid);
4159                     put_user(st.st_rdev, &target_st->st_rdev);
4160                     /* XXX: better use of kernel struct */
4161                     put_user(st.st_size, &target_st->st_size);
4162                     put_user(st.st_blksize, &target_st->st_blksize);
4163                     put_user(st.st_blocks, &target_st->st_blocks);
4164                     put_user(st.st_atime, &target_st->target_st_atime);
4165                     put_user(st.st_mtime, &target_st->target_st_mtime);
4166                     put_user(st.st_ctime, &target_st->target_st_ctime);
4167                     unlock_user_struct(target_st, arg2, 0);
4168                 } else
4169 #endif
4170                 {
4171                     struct target_stat64 *target_st;
4172                     lock_user_struct(target_st, arg2, 1);
4173                     memset(target_st, 0, sizeof(struct target_stat64));
4174                     /* ??? put_user is probably wrong.  */
4175                     put_user(st.st_dev, &target_st->st_dev);
4176                     put_user(st.st_ino, &target_st->st_ino);
4177 #ifdef TARGET_STAT64_HAS_BROKEN_ST_INO
4178                     put_user(st.st_ino, &target_st->__st_ino);
4179 #endif
4180                     put_user(st.st_mode, &target_st->st_mode);
4181                     put_user(st.st_nlink, &target_st->st_nlink);
4182                     put_user(st.st_uid, &target_st->st_uid);
4183                     put_user(st.st_gid, &target_st->st_gid);
4184                     put_user(st.st_rdev, &target_st->st_rdev);
4185                     /* XXX: better use of kernel struct */
4186                     put_user(st.st_size, &target_st->st_size);
4187                     put_user(st.st_blksize, &target_st->st_blksize);
4188                     put_user(st.st_blocks, &target_st->st_blocks);
4189                     put_user(st.st_atime, &target_st->target_st_atime);
4190                     put_user(st.st_mtime, &target_st->target_st_mtime);
4191                     put_user(st.st_ctime, &target_st->target_st_ctime);
4192                     unlock_user_struct(target_st, arg2, 0);
4193                 }
4194             }
4195         }
4196         break;
4197 #endif
4198 #ifdef USE_UID16
4199     case TARGET_NR_lchown:
4200         p = lock_user_string(arg1);
4201         ret = get_errno(lchown(p, low2highuid(arg2), low2highgid(arg3)));
4202         unlock_user(p, arg1, 0);
4203         break;
4204     case TARGET_NR_getuid:
4205         ret = get_errno(high2lowuid(getuid()));
4206         break;
4207     case TARGET_NR_getgid:
4208         ret = get_errno(high2lowgid(getgid()));
4209         break;
4210     case TARGET_NR_geteuid:
4211         ret = get_errno(high2lowuid(geteuid()));
4212         break;
4213     case TARGET_NR_getegid:
4214         ret = get_errno(high2lowgid(getegid()));
4215         break;
4216     case TARGET_NR_setreuid:
4217         ret = get_errno(setreuid(low2highuid(arg1), low2highuid(arg2)));
4218         break;
4219     case TARGET_NR_setregid:
4220         ret = get_errno(setregid(low2highgid(arg1), low2highgid(arg2)));
4221         break;
4222     case TARGET_NR_getgroups:
4223         {
4224             int gidsetsize = arg1;
4225             uint16_t *target_grouplist;
4226             gid_t *grouplist;
4227             int i;
4228
4229             grouplist = alloca(gidsetsize * sizeof(gid_t));
4230             ret = get_errno(getgroups(gidsetsize, grouplist));
4231             if (!is_error(ret)) {
4232                 target_grouplist = lock_user(arg2, gidsetsize * 2, 0);
4233                 for(i = 0;i < gidsetsize; i++)
4234                     target_grouplist[i] = tswap16(grouplist[i]);
4235                 unlock_user(target_grouplist, arg2, gidsetsize * 2);
4236             }
4237         }
4238         break;
4239     case TARGET_NR_setgroups:
4240         {
4241             int gidsetsize = arg1;
4242             uint16_t *target_grouplist;
4243             gid_t *grouplist;
4244             int i;
4245
4246             grouplist = alloca(gidsetsize * sizeof(gid_t));
4247             target_grouplist = lock_user(arg2, gidsetsize * 2, 1);
4248             for(i = 0;i < gidsetsize; i++)
4249                 grouplist[i] = tswap16(target_grouplist[i]);
4250             unlock_user(target_grouplist, arg2, 0);
4251             ret = get_errno(setgroups(gidsetsize, grouplist));
4252         }
4253         break;
4254     case TARGET_NR_fchown:
4255         ret = get_errno(fchown(arg1, low2highuid(arg2), low2highgid(arg3)));
4256         break;
4257 #ifdef TARGET_NR_setresuid
4258     case TARGET_NR_setresuid:
4259         ret = get_errno(setresuid(low2highuid(arg1),
4260                                   low2highuid(arg2),
4261                                   low2highuid(arg3)));
4262         break;
4263 #endif
4264 #ifdef TARGET_NR_getresuid
4265     case TARGET_NR_getresuid:
4266         {
4267             uid_t ruid, euid, suid;
4268             ret = get_errno(getresuid(&ruid, &euid, &suid));
4269             if (!is_error(ret)) {
4270                 tput16(arg1, tswap16(high2lowuid(ruid)));
4271                 tput16(arg2, tswap16(high2lowuid(euid)));
4272                 tput16(arg3, tswap16(high2lowuid(suid)));
4273             }
4274         }
4275         break;
4276 #endif
4277 #ifdef TARGET_NR_getresgid
4278     case TARGET_NR_setresgid:
4279         ret = get_errno(setresgid(low2highgid(arg1),
4280                                   low2highgid(arg2),
4281                                   low2highgid(arg3)));
4282         break;
4283 #endif
4284 #ifdef TARGET_NR_getresgid
4285     case TARGET_NR_getresgid:
4286         {
4287             gid_t rgid, egid, sgid;
4288             ret = get_errno(getresgid(&rgid, &egid, &sgid));
4289             if (!is_error(ret)) {
4290                 tput16(arg1, tswap16(high2lowgid(rgid)));
4291                 tput16(arg2, tswap16(high2lowgid(egid)));
4292                 tput16(arg3, tswap16(high2lowgid(sgid)));
4293             }
4294         }
4295         break;
4296 #endif
4297     case TARGET_NR_chown:
4298         p = lock_user_string(arg1);
4299         ret = get_errno(chown(p, low2highuid(arg2), low2highgid(arg3)));
4300         unlock_user(p, arg1, 0);
4301         break;
4302     case TARGET_NR_setuid:
4303         ret = get_errno(setuid(low2highuid(arg1)));
4304         break;
4305     case TARGET_NR_setgid:
4306         ret = get_errno(setgid(low2highgid(arg1)));
4307         break;
4308     case TARGET_NR_setfsuid:
4309         ret = get_errno(setfsuid(arg1));
4310         break;
4311     case TARGET_NR_setfsgid:
4312         ret = get_errno(setfsgid(arg1));
4313         break;
4314 #endif /* USE_UID16 */
4315
4316 #ifdef TARGET_NR_lchown32
4317     case TARGET_NR_lchown32:
4318         p = lock_user_string(arg1);
4319         ret = get_errno(lchown(p, arg2, arg3));
4320         unlock_user(p, arg1, 0);
4321         break;
4322 #endif
4323 #ifdef TARGET_NR_getuid32
4324     case TARGET_NR_getuid32:
4325         ret = get_errno(getuid());
4326         break;
4327 #endif
4328 #ifdef TARGET_NR_getgid32
4329     case TARGET_NR_getgid32:
4330         ret = get_errno(getgid());
4331         break;
4332 #endif
4333 #ifdef TARGET_NR_geteuid32
4334     case TARGET_NR_geteuid32:
4335         ret = get_errno(geteuid());
4336         break;
4337 #endif
4338 #ifdef TARGET_NR_getegid32
4339     case TARGET_NR_getegid32:
4340         ret = get_errno(getegid());
4341         break;
4342 #endif
4343 #ifdef TARGET_NR_setreuid32
4344     case TARGET_NR_setreuid32:
4345         ret = get_errno(setreuid(arg1, arg2));
4346         break;
4347 #endif
4348 #ifdef TARGET_NR_setregid32
4349     case TARGET_NR_setregid32:
4350         ret = get_errno(setregid(arg1, arg2));
4351         break;
4352 #endif
4353 #ifdef TARGET_NR_getgroups32
4354     case TARGET_NR_getgroups32:
4355         {
4356             int gidsetsize = arg1;
4357             uint32_t *target_grouplist;
4358             gid_t *grouplist;
4359             int i;
4360
4361             grouplist = alloca(gidsetsize * sizeof(gid_t));
4362             ret = get_errno(getgroups(gidsetsize, grouplist));
4363             if (!is_error(ret)) {
4364                 target_grouplist = lock_user(arg2, gidsetsize * 4, 0);
4365                 for(i = 0;i < gidsetsize; i++)
4366                     target_grouplist[i] = tswap32(grouplist[i]);
4367                 unlock_user(target_grouplist, arg2, gidsetsize * 4);
4368             }
4369         }
4370         break;
4371 #endif
4372 #ifdef TARGET_NR_setgroups32
4373     case TARGET_NR_setgroups32:
4374         {
4375             int gidsetsize = arg1;
4376             uint32_t *target_grouplist;
4377             gid_t *grouplist;
4378             int i;
4379
4380             grouplist = alloca(gidsetsize * sizeof(gid_t));
4381             target_grouplist = lock_user(arg2, gidsetsize * 4, 1);
4382             for(i = 0;i < gidsetsize; i++)
4383                 grouplist[i] = tswap32(target_grouplist[i]);
4384             unlock_user(target_grouplist, arg2, 0);
4385             ret = get_errno(setgroups(gidsetsize, grouplist));
4386         }
4387         break;
4388 #endif
4389 #ifdef TARGET_NR_fchown32
4390     case TARGET_NR_fchown32:
4391         ret = get_errno(fchown(arg1, arg2, arg3));
4392         break;
4393 #endif
4394 #ifdef TARGET_NR_setresuid32
4395     case TARGET_NR_setresuid32:
4396         ret = get_errno(setresuid(arg1, arg2, arg3));
4397         break;
4398 #endif
4399 #ifdef TARGET_NR_getresuid32
4400     case TARGET_NR_getresuid32:
4401         {
4402             uid_t ruid, euid, suid;
4403             ret = get_errno(getresuid(&ruid, &euid, &suid));
4404             if (!is_error(ret)) {
4405                 tput32(arg1, tswap32(ruid));
4406                 tput32(arg2, tswap32(euid));
4407                 tput32(arg3, tswap32(suid));
4408             }
4409         }
4410         break;
4411 #endif
4412 #ifdef TARGET_NR_setresgid32
4413     case TARGET_NR_setresgid32:
4414         ret = get_errno(setresgid(arg1, arg2, arg3));
4415         break;
4416 #endif
4417 #ifdef TARGET_NR_getresgid32
4418     case TARGET_NR_getresgid32:
4419         {
4420             gid_t rgid, egid, sgid;
4421             ret = get_errno(getresgid(&rgid, &egid, &sgid));
4422             if (!is_error(ret)) {
4423                 tput32(arg1, tswap32(rgid));
4424                 tput32(arg2, tswap32(egid));
4425                 tput32(arg3, tswap32(sgid));
4426             }
4427         }
4428         break;
4429 #endif
4430 #ifdef TARGET_NR_chown32
4431     case TARGET_NR_chown32:
4432         p = lock_user_string(arg1);
4433         ret = get_errno(chown(p, arg2, arg3));
4434         unlock_user(p, arg1, 0);
4435         break;
4436 #endif
4437 #ifdef TARGET_NR_setuid32
4438     case TARGET_NR_setuid32:
4439         ret = get_errno(setuid(arg1));
4440         break;
4441 #endif
4442 #ifdef TARGET_NR_setgid32
4443     case TARGET_NR_setgid32:
4444         ret = get_errno(setgid(arg1));
4445         break;
4446 #endif
4447 #ifdef TARGET_NR_setfsuid32
4448     case TARGET_NR_setfsuid32:
4449         ret = get_errno(setfsuid(arg1));
4450         break;
4451 #endif
4452 #ifdef TARGET_NR_setfsgid32
4453     case TARGET_NR_setfsgid32:
4454         ret = get_errno(setfsgid(arg1));
4455         break;
4456 #endif
4457
4458     case TARGET_NR_pivot_root:
4459         goto unimplemented;
4460 #ifdef TARGET_NR_mincore
4461     case TARGET_NR_mincore:
4462         goto unimplemented;
4463 #endif
4464 #ifdef TARGET_NR_madvise
4465     case TARGET_NR_madvise:
4466         /* A straight passthrough may not be safe because qemu sometimes
4467            turns private flie-backed mappings into anonymous mappings.
4468            This will break MADV_DONTNEED.
4469            This is a hint, so ignoring and returning success is ok.  */
4470         ret = get_errno(0);
4471         break;
4472 #endif
4473 #if TARGET_LONG_BITS == 32
4474     case TARGET_NR_fcntl64:
4475     {
4476         int cmd;
4477         struct flock64 fl;
4478         struct target_flock64 *target_fl;
4479 #ifdef TARGET_ARM
4480         struct target_eabi_flock64 *target_efl;
4481 #endif
4482
4483         switch(arg2){
4484         case TARGET_F_GETLK64:
4485             cmd = F_GETLK64;
4486             break;
4487         case TARGET_F_SETLK64:
4488             cmd = F_SETLK64;
4489             break;
4490         case TARGET_F_SETLKW64:
4491             cmd = F_SETLK64;
4492             break;
4493         default:
4494             cmd = arg2;
4495             break;
4496         }
4497
4498         switch(arg2) {
4499         case TARGET_F_GETLK64:
4500 #ifdef TARGET_ARM
4501             if (((CPUARMState *)cpu_env)->eabi) {
4502                 lock_user_struct(target_efl, arg3, 1);
4503                 fl.l_type = tswap16(target_efl->l_type);
4504                 fl.l_whence = tswap16(target_efl->l_whence);
4505                 fl.l_start = tswap64(target_efl->l_start);
4506                 fl.l_len = tswap64(target_efl->l_len);
4507                 fl.l_pid = tswapl(target_efl->l_pid);
4508                 unlock_user_struct(target_efl, arg3, 0);
4509             } else
4510 #endif
4511             {
4512                 lock_user_struct(target_fl, arg3, 1);
4513                 fl.l_type = tswap16(target_fl->l_type);
4514                 fl.l_whence = tswap16(target_fl->l_whence);
4515                 fl.l_start = tswap64(target_fl->l_start);
4516                 fl.l_len = tswap64(target_fl->l_len);
4517                 fl.l_pid = tswapl(target_fl->l_pid);
4518                 unlock_user_struct(target_fl, arg3, 0);
4519             }
4520             ret = get_errno(fcntl(arg1, cmd, &fl));
4521             if (ret == 0) {
4522 #ifdef TARGET_ARM
4523                 if (((CPUARMState *)cpu_env)->eabi) {
4524                     lock_user_struct(target_efl, arg3, 0);
4525                     target_efl->l_type = tswap16(fl.l_type);
4526                     target_efl->l_whence = tswap16(fl.l_whence);
4527                     target_efl->l_start = tswap64(fl.l_start);
4528                     target_efl->l_len = tswap64(fl.l_len);
4529                     target_efl->l_pid = tswapl(fl.l_pid);
4530                     unlock_user_struct(target_efl, arg3, 1);
4531                 } else
4532 #endif
4533                 {
4534                     lock_user_struct(target_fl, arg3, 0);
4535                     target_fl->l_type = tswap16(fl.l_type);
4536                     target_fl->l_whence = tswap16(fl.l_whence);
4537                     target_fl->l_start = tswap64(fl.l_start);
4538                     target_fl->l_len = tswap64(fl.l_len);
4539                     target_fl->l_pid = tswapl(fl.l_pid);
4540                     unlock_user_struct(target_fl, arg3, 1);
4541                 }
4542             }
4543             break;
4544
4545         case TARGET_F_SETLK64:
4546         case TARGET_F_SETLKW64:
4547 #ifdef TARGET_ARM
4548             if (((CPUARMState *)cpu_env)->eabi) {
4549                 lock_user_struct(target_efl, arg3, 1);
4550                 fl.l_type = tswap16(target_efl->l_type);
4551                 fl.l_whence = tswap16(target_efl->l_whence);
4552                 fl.l_start = tswap64(target_efl->l_start);
4553                 fl.l_len = tswap64(target_efl->l_len);
4554                 fl.l_pid = tswapl(target_efl->l_pid);
4555                 unlock_user_struct(target_efl, arg3, 0);
4556             } else
4557 #endif
4558             {
4559                 lock_user_struct(target_fl, arg3, 1);
4560                 fl.l_type = tswap16(target_fl->l_type);
4561                 fl.l_whence = tswap16(target_fl->l_whence);
4562                 fl.l_start = tswap64(target_fl->l_start);
4563                 fl.l_len = tswap64(target_fl->l_len);
4564                 fl.l_pid = tswapl(target_fl->l_pid);
4565                 unlock_user_struct(target_fl, arg3, 0);
4566             }
4567             ret = get_errno(fcntl(arg1, cmd, &fl));
4568             break;
4569         default:
4570             ret = get_errno(do_fcntl(arg1, cmd, arg3));
4571             break;
4572         }
4573         break;
4574     }
4575 #endif
4576 #ifdef TARGET_NR_cacheflush
4577     case TARGET_NR_cacheflush:
4578         /* self-modifying code is handled automatically, so nothing needed */
4579         ret = 0;
4580         break;
4581 #endif
4582 #ifdef TARGET_NR_security
4583     case TARGET_NR_security:
4584         goto unimplemented;
4585 #endif
4586 #ifdef TARGET_NR_getpagesize
4587     case TARGET_NR_getpagesize:
4588         ret = TARGET_PAGE_SIZE;
4589         break;
4590 #endif
4591     case TARGET_NR_gettid:
4592         ret = get_errno(gettid());
4593         break;
4594 #ifdef TARGET_NR_readahead
4595     case TARGET_NR_readahead:
4596         goto unimplemented;
4597 #endif
4598 #ifdef TARGET_NR_setxattr
4599     case TARGET_NR_setxattr:
4600     case TARGET_NR_lsetxattr:
4601     case TARGET_NR_fsetxattr:
4602     case TARGET_NR_getxattr:
4603     case TARGET_NR_lgetxattr:
4604     case TARGET_NR_fgetxattr:
4605     case TARGET_NR_listxattr:
4606     case TARGET_NR_llistxattr:
4607     case TARGET_NR_flistxattr:
4608     case TARGET_NR_removexattr:
4609     case TARGET_NR_lremovexattr:
4610     case TARGET_NR_fremovexattr:
4611         goto unimplemented_nowarn;
4612 #endif
4613 #ifdef TARGET_NR_set_thread_area
4614     case TARGET_NR_set_thread_area:
4615 #ifdef TARGET_MIPS
4616       ((CPUMIPSState *) cpu_env)->tls_value = arg1;
4617       ret = 0;
4618       break;
4619 #else
4620       goto unimplemented_nowarn;
4621 #endif
4622 #endif
4623 #ifdef TARGET_NR_get_thread_area
4624     case TARGET_NR_get_thread_area:
4625         goto unimplemented_nowarn;
4626 #endif
4627 #ifdef TARGET_NR_getdomainname
4628     case TARGET_NR_getdomainname:
4629         goto unimplemented_nowarn;
4630 #endif
4631
4632 #ifdef TARGET_NR_clock_gettime
4633     case TARGET_NR_clock_gettime:
4634     {
4635         struct timespec ts;
4636         ret = get_errno(clock_gettime(arg1, &ts));
4637         if (!is_error(ret)) {
4638             host_to_target_timespec(arg2, &ts);
4639         }
4640         break;
4641     }
4642 #endif
4643 #ifdef TARGET_NR_clock_getres
4644     case TARGET_NR_clock_getres:
4645     {
4646         struct timespec ts;
4647         ret = get_errno(clock_getres(arg1, &ts));
4648         if (!is_error(ret)) {
4649             host_to_target_timespec(arg2, &ts);
4650         }
4651         break;
4652     }
4653 #endif
4654
4655 #if defined(TARGET_NR_set_tid_address) && defined(__NR_set_tid_address)
4656     case TARGET_NR_set_tid_address:
4657       ret = get_errno(set_tid_address((int *) arg1));
4658       break;
4659 #endif
4660
4661 #if defined(TARGET_NR_tkill) && defined(__NR_tkill)
4662     case TARGET_NR_tkill:
4663         ret = get_errno(sys_tkill((int)arg1, (int)arg2));
4664         break;
4665 #endif
4666
4667 #if defined(TARGET_NR_tgkill) && defined(__NR_tgkill)
4668     case TARGET_NR_tgkill:
4669         ret = get_errno(sys_tgkill((int)arg1, (int)arg2, (int)arg3));
4670         break;
4671 #endif
4672
4673 #ifdef TARGET_NR_set_robust_list
4674     case TARGET_NR_set_robust_list:
4675         goto unimplemented_nowarn;
4676 #endif
4677
4678     default:
4679     unimplemented:
4680         gemu_log("qemu: Unsupported syscall: %d\n", num);
4681 #if defined(TARGET_NR_setxattr) || defined(TARGET_NR_get_thread_area) || defined(TARGET_NR_getdomainname) || defined(TARGET_NR_set_robust_list)
4682     unimplemented_nowarn:
4683 #endif
4684         ret = -ENOSYS;
4685         break;
4686     }
4687  fail:
4688 #ifdef DEBUG
4689     gemu_log(" = %ld\n", ret);
4690 #endif
4691     return ret;
4692 }
4693