git.maemo.org Git - qemu/blob - 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/wait.h>
  32 #include <sys/time.h>
  33 #include <sys/stat.h>
  34 #include <sys/mount.h>
  35 #include <sys/resource.h>
  36 #include <sys/mman.h>
  37 #include <sys/swap.h>
  38 #include <signal.h>
  39 #include <sched.h>
  40 #include <sys/socket.h>
  41 #include <sys/uio.h>
  42 #include <sys/poll.h>
  43 #include <sys/times.h>
  44 //#include <sys/user.h>
  45 #include <netinet/tcp.h>
  46
  47 #define termios host_termios
  48 #define winsize host_winsize
  49 #define termio host_termio
  50 #define sgttyb host_sgttyb /* same as target */
  51 #define tchars host_tchars /* same as target */
  52 #define ltchars host_ltchars /* same as target */
  53
  54 #include <linux/termios.h>
  55 #include <linux/unistd.h>
  56 #include <linux/utsname.h>
  57 #include <linux/cdrom.h>
  58 #include <linux/hdreg.h>
  59 #include <linux/soundcard.h>
  60 #include <linux/dirent.h>
  61
  62 #include "qemu.h"
  63
  64 //#define DEBUG
  65
  66 #ifndef PAGE_SIZE
  67 #define PAGE_SIZE 4096
  68 #define PAGE_MASK ~(PAGE_SIZE - 1)
  69 #endif
  70
  71 //#include <linux/msdos_fs.h>
  72 #define VFAT_IOCTL_READDIR_BOTH         _IOR('r', 1, struct dirent [2])
  73 #define VFAT_IOCTL_READDIR_SHORT        _IOR('r', 2, struct dirent [2])
  74
  75 void host_to_target_siginfo(target_siginfo_t *tinfo, const siginfo_t *info);
  76 void target_to_host_siginfo(siginfo_t *info, const target_siginfo_t *tinfo);
  77 long do_sigreturn(CPUX86State *env);
  78 long do_rt_sigreturn(CPUX86State *env);
  79
  80 #define __NR_sys_uname __NR_uname
  81 #define __NR_sys_getcwd1 __NR_getcwd
  82 #define __NR_sys_statfs __NR_statfs
  83 #define __NR_sys_fstatfs __NR_fstatfs
  84 #define __NR_sys_getdents __NR_getdents
  85 #define __NR_sys_getdents64 __NR_getdents64
  86 #define __NR_sys_rt_sigqueueinfo __NR_rt_sigqueueinfo
  87
  88 #ifdef __alpha__
  89 #define __NR__llseek __NR_lseek
  90 #endif
  91
  92 #ifdef __NR_gettid
  93 _syscall0(int, gettid)
  94 #else
  95 static int gettid(void) {
  96     return -ENOSYS;
  97 }
  98 #endif
  99 _syscall1(int,sys_uname,struct new_utsname *,buf)
 100 _syscall2(int,sys_getcwd1,char *,buf,size_t,size)
 101 _syscall3(int, sys_getdents, uint, fd, struct dirent *, dirp, uint, count);
 102 _syscall3(int, sys_getdents64, uint, fd, struct dirent64 *, dirp, uint, count);
 103 _syscall5(int, _llseek,  uint,  fd, ulong, hi, ulong, lo,
 104           loff_t *, res, uint, wh);
 105 _syscall2(int,sys_statfs,const char *,path,struct kernel_statfs *,buf)
 106 _syscall2(int,sys_fstatfs,int,fd,struct kernel_statfs *,buf)
 107 _syscall3(int,sys_rt_sigqueueinfo,int,pid,int,sig,siginfo_t *,uinfo)
 108 #ifdef __NR_exit_group
 109 _syscall1(int,exit_group,int,error_code)
 110 #endif
 111
 112 extern int personality(int);
 113 extern int flock(int, int);
 114 extern int setfsuid(int);
 115 extern int setfsgid(int);
 116 extern int setresuid(uid_t, uid_t, uid_t);
 117 extern int getresuid(uid_t *, uid_t *, uid_t *);
 118 extern int setresgid(gid_t, gid_t, gid_t);
 119 extern int getresgid(gid_t *, gid_t *, gid_t *);
 120
 121 static inline long get_errno(long ret)
 122 {
 123     if (ret == -1)
 124         return -errno;
 125     else
 126         return ret;
 127 }
 128
 129 static inline int is_error(long ret)
 130 {
 131     return (unsigned long)ret >= (unsigned long)(-4096);
 132 }
 133
 134 static char *target_brk;
 135 static char *target_original_brk;
 136
 137 void target_set_brk(char *new_brk)
 138 {
 139     target_brk = new_brk;
 140     target_original_brk = new_brk;
 141 }
 142
 143 static long do_brk(char *new_brk)
 144 {
 145     char *brk_page;
 146     long mapped_addr;
 147     int new_alloc_size;
 148
 149     if (!new_brk)
 150         return (long)target_brk;
 151     if (new_brk < target_original_brk)
 152         return -ENOMEM;
 153
 154     brk_page = (char *)(((unsigned long)target_brk + PAGE_SIZE - 1) & PAGE_MASK);
 155
 156     /* If the new brk is less than this, set it and we're done... */
 157     if (new_brk < brk_page) {
 158         target_brk = new_brk;
 159         return (long)target_brk;
 160     }
 161
 162     /* We need to allocate more memory after the brk... */
 163     new_alloc_size = ((new_brk - brk_page + 1)+(PAGE_SIZE-1)) & PAGE_MASK;
 164     mapped_addr = get_errno((long)mmap((caddr_t)brk_page, new_alloc_size,
 165                                        PROT_READ|PROT_WRITE,
 166                                        MAP_ANON|MAP_FIXED|MAP_PRIVATE, 0, 0));
 167
 168     if (is_error(mapped_addr)) {
 169         return mapped_addr;
 170     } else {
 171         target_brk = new_brk;
 172         return (long)target_brk;
 173     }
 174 }
 175
 176 static inline fd_set *target_to_host_fds(fd_set *fds,
 177                                          target_long *target_fds, int n)
 178 {
 179 #if !defined(BSWAP_NEEDED) && !defined(WORDS_BIGENDIAN)
 180     return (fd_set *)target_fds;
 181 #else
 182     int i, b;
 183     if (target_fds) {
 184         FD_ZERO(fds);
 185         for(i = 0;i < n; i++) {
 186             b = (tswapl(target_fds[i / TARGET_LONG_BITS]) >>
 187                  (i & (TARGET_LONG_BITS - 1))) & 1;
 188             if (b)
 189                 FD_SET(i, fds);
 190         }
 191         return fds;
 192     } else {
 193         return NULL;
 194     }
 195 #endif
 196 }
 197
 198 static inline void host_to_target_fds(target_long *target_fds,
 199                                       fd_set *fds, int n)
 200 {
 201 #if !defined(BSWAP_NEEDED) && !defined(WORDS_BIGENDIAN)
 202     /* nothing to do */
 203 #else
 204     int i, nw, j, k;
 205     target_long v;
 206
 207     if (target_fds) {
 208         nw = n / TARGET_LONG_BITS;
 209         k = 0;
 210         for(i = 0;i < nw; i++) {
 211             v = 0;
 212             for(j = 0; j < TARGET_LONG_BITS; j++) {
 213                 v |= ((FD_ISSET(k, fds) != 0) << j);
 214                 k++;
 215             }
 216             target_fds[i] = tswapl(v);
 217         }
 218     }
 219 #endif
 220 }
 221
 222 static inline void target_to_host_timeval(struct timeval *tv,
 223                                           const struct target_timeval *target_tv)
 224 {
 225     tv->tv_sec = tswapl(target_tv->tv_sec);
 226     tv->tv_usec = tswapl(target_tv->tv_usec);
 227 }
 228
 229 static inline void host_to_target_timeval(struct target_timeval *target_tv,
 230                                           const struct timeval *tv)
 231 {
 232     target_tv->tv_sec = tswapl(tv->tv_sec);
 233     target_tv->tv_usec = tswapl(tv->tv_usec);
 234 }
 235
 236
 237 static long do_select(long n,
 238                       target_long *target_rfds, target_long *target_wfds,
 239                       target_long *target_efds, struct target_timeval *target_tv)
 240 {
 241     fd_set rfds, wfds, efds;
 242     fd_set *rfds_ptr, *wfds_ptr, *efds_ptr;
 243     struct timeval tv, *tv_ptr;
 244     long ret;
 245
 246     rfds_ptr = target_to_host_fds(&rfds, target_rfds, n);
 247     wfds_ptr = target_to_host_fds(&wfds, target_wfds, n);
 248     efds_ptr = target_to_host_fds(&efds, target_efds, n);
 249
 250     if (target_tv) {
 251         target_to_host_timeval(&tv, target_tv);
 252         tv_ptr = &tv;
 253     } else {
 254         tv_ptr = NULL;
 255     }
 256     ret = get_errno(select(n, rfds_ptr, wfds_ptr, efds_ptr, tv_ptr));
 257     if (!is_error(ret)) {
 258         host_to_target_fds(target_rfds, rfds_ptr, n);
 259         host_to_target_fds(target_wfds, wfds_ptr, n);
 260         host_to_target_fds(target_efds, efds_ptr, n);
 261
 262         if (target_tv) {
 263             host_to_target_timeval(target_tv, &tv);
 264         }
 265     }
 266     return ret;
 267 }
 268
 269 static inline void target_to_host_sockaddr(struct sockaddr *addr,
 270                                            struct target_sockaddr *target_addr,
 271                                            socklen_t len)
 272 {
 273     memcpy(addr, target_addr, len);
 274     addr->sa_family = tswap16(target_addr->sa_family);
 275 }
 276
 277 static inline void host_to_target_sockaddr(struct target_sockaddr *target_addr,
 278                                            struct sockaddr *addr,
 279                                            socklen_t len)
 280 {
 281     memcpy(target_addr, addr, len);
 282     target_addr->sa_family = tswap16(addr->sa_family);
 283 }
 284
 285 static inline void target_to_host_cmsg(struct msghdr *msgh,
 286                                        struct target_msghdr *target_msgh)
 287 {
 288     struct cmsghdr *cmsg = CMSG_FIRSTHDR(msgh);
 289     struct target_cmsghdr *target_cmsg = TARGET_CMSG_FIRSTHDR(target_msgh);
 290     socklen_t space = 0;
 291
 292     while (cmsg && target_cmsg) {
 293         void *data = CMSG_DATA(cmsg);
 294         void *target_data = TARGET_CMSG_DATA(target_cmsg);
 295
 296         int len = tswapl(target_cmsg->cmsg_len)
 297                   - TARGET_CMSG_ALIGN(sizeof (struct target_cmsghdr));
 298
 299         space += CMSG_SPACE(len);
 300         if (space > msgh->msg_controllen) {
 301             space -= CMSG_SPACE(len);
 302             gemu_log("Host cmsg overflow");
 303             break;
 304         }
 305
 306         cmsg->cmsg_level = tswap32(target_cmsg->cmsg_level);
 307         cmsg->cmsg_type = tswap32(target_cmsg->cmsg_type);
 308         cmsg->cmsg_len = CMSG_LEN(len);
 309
 310         if (cmsg->cmsg_level != SOL_SOCKET || cmsg->cmsg_type != SCM_RIGHTS) {
 311             gemu_log("Unsupported ancillary data: %d/%d\n", cmsg->cmsg_level, cmsg->cmsg_type);
 312             memcpy(data, target_data, len);
 313         } else {
 314             int *fd = (int *)data;
 315             int *target_fd = (int *)target_data;
 316             int i, numfds = len / sizeof(int);
 317
 318             for (i = 0; i < numfds; i++)
 319                 fd[i] = tswap32(target_fd[i]);
 320         }
 321
 322         cmsg = CMSG_NXTHDR(msgh, cmsg);
 323         target_cmsg = TARGET_CMSG_NXTHDR(target_msgh, target_cmsg);
 324     }
 325
 326     msgh->msg_controllen = space;
 327 }
 328
 329 static inline void host_to_target_cmsg(struct target_msghdr *target_msgh,
 330                                        struct msghdr *msgh)
 331 {
 332     struct cmsghdr *cmsg = CMSG_FIRSTHDR(msgh);
 333     struct target_cmsghdr *target_cmsg = TARGET_CMSG_FIRSTHDR(target_msgh);
 334     socklen_t space = 0;
 335
 336     while (cmsg && target_cmsg) {
 337         void *data = CMSG_DATA(cmsg);
 338         void *target_data = TARGET_CMSG_DATA(target_cmsg);
 339
 340         int len = cmsg->cmsg_len - CMSG_ALIGN(sizeof (struct cmsghdr));
 341
 342         space += TARGET_CMSG_SPACE(len);
 343         if (space > tswapl(target_msgh->msg_controllen)) {
 344             space -= TARGET_CMSG_SPACE(len);
 345             gemu_log("Target cmsg overflow");
 346             break;
 347         }
 348
 349         target_cmsg->cmsg_level = tswap32(cmsg->cmsg_level);
 350         target_cmsg->cmsg_type = tswap32(cmsg->cmsg_type);
 351         target_cmsg->cmsg_len = tswapl(TARGET_CMSG_LEN(len));
 352
 353         if (cmsg->cmsg_level != SOL_SOCKET || cmsg->cmsg_type != SCM_RIGHTS) {
 354             gemu_log("Unsupported ancillary data: %d/%d\n", cmsg->cmsg_level, cmsg->cmsg_type);
 355             memcpy(target_data, data, len);
 356         } else {
 357             int *fd = (int *)data;
 358             int *target_fd = (int *)target_data;
 359             int i, numfds = len / sizeof(int);
 360
 361             for (i = 0; i < numfds; i++)
 362                 target_fd[i] = tswap32(fd[i]);
 363         }
 364
 365         cmsg = CMSG_NXTHDR(msgh, cmsg);
 366         target_cmsg = TARGET_CMSG_NXTHDR(target_msgh, target_cmsg);
 367     }
 368
 369     msgh->msg_controllen = tswapl(space);
 370 }
 371
 372 static long do_setsockopt(int sockfd, int level, int optname,
 373                           void *optval, socklen_t optlen)
 374 {
 375     if (level == SOL_TCP) {
 376         /* TCP options all take an 'int' value.  */
 377         int val;
 378
 379         if (optlen < sizeof(uint32_t))
 380             return -EINVAL;
 381
 382         val = tswap32(*(uint32_t *)optval);
 383         return get_errno(setsockopt(sockfd, level, optname, &val, sizeof(val)));
 384     }
 385
 386     else if (level != SOL_SOCKET) {
 387         gemu_log("Unsupported setsockopt level: %d\n", level);
 388         return -ENOSYS;
 389     }
 390
 391     switch (optname) {
 392     /* Options with 'int' argument.  */
 393     case SO_DEBUG:
 394     case SO_REUSEADDR:
 395     case SO_TYPE:
 396     case SO_ERROR:
 397     case SO_DONTROUTE:
 398     case SO_BROADCAST:
 399     case SO_SNDBUF:
 400     case SO_RCVBUF:
 401     case SO_KEEPALIVE:
 402     case SO_OOBINLINE:
 403     case SO_NO_CHECK:
 404     case SO_PRIORITY:
 405     case SO_BSDCOMPAT:
 406     case SO_PASSCRED:
 407     case SO_TIMESTAMP:
 408     case SO_RCVLOWAT:
 409     case SO_RCVTIMEO:
 410     case SO_SNDTIMEO:
 411     {
 412         int val;
 413         if (optlen < sizeof(uint32_t))
 414             return -EINVAL;
 415         val = tswap32(*(uint32_t *)optval);
 416         return get_errno(setsockopt(sockfd, level, optname, &val, sizeof(val)));
 417     }
 418
 419     default:
 420         gemu_log("Unsupported setsockopt SOL_SOCKET option: %d\n", optname);
 421         return -ENOSYS;
 422     }
 423 }
 424
 425 static long do_getsockopt(int sockfd, int level, int optname,
 426                           void *optval, socklen_t *optlen)
 427 {
 428     gemu_log("getsockopt not yet supported\n");
 429     return -ENOSYS;
 430 }
 431
 432 static long do_socketcall(int num, int32_t *vptr)
 433 {
 434     long ret;
 435
 436     switch(num) {
 437     case SOCKOP_socket:
 438         {
 439             int domain = tswap32(vptr[0]);
 440             int type = tswap32(vptr[1]);
 441             int protocol = tswap32(vptr[2]);
 442
 443             ret = get_errno(socket(domain, type, protocol));
 444         }
 445         break;
 446     case SOCKOP_bind:
 447         {
 448             int sockfd = tswap32(vptr[0]);
 449             void *target_addr = (void *)tswap32(vptr[1]);
 450             socklen_t addrlen = tswap32(vptr[2]);
 451             void *addr = alloca(addrlen);
 452
 453             target_to_host_sockaddr(addr, target_addr, addrlen);
 454             ret = get_errno(bind(sockfd, addr, addrlen));
 455         }
 456         break;
 457     case SOCKOP_connect:
 458         {
 459             int sockfd = tswap32(vptr[0]);
 460             void *target_addr = (void *)tswap32(vptr[1]);
 461             socklen_t addrlen = tswap32(vptr[2]);
 462             void *addr = alloca(addrlen);
 463
 464             target_to_host_sockaddr(addr, target_addr, addrlen);
 465             ret = get_errno(connect(sockfd, addr, addrlen));
 466         }
 467         break;
 468     case SOCKOP_listen:
 469         {
 470             int sockfd = tswap32(vptr[0]);
 471             int backlog = tswap32(vptr[1]);
 472
 473             ret = get_errno(listen(sockfd, backlog));
 474         }
 475         break;
 476     case SOCKOP_accept:
 477         {
 478             int sockfd = tswap32(vptr[0]);
 479             void *target_addr = (void *)tswap32(vptr[1]);
 480             uint32_t *target_addrlen = (void *)tswap32(vptr[2]);
 481             socklen_t addrlen = tswap32(*target_addrlen);
 482             void *addr = alloca(addrlen);
 483
 484             ret = get_errno(accept(sockfd, addr, &addrlen));
 485             if (!is_error(ret)) {
 486                 host_to_target_sockaddr(target_addr, addr, addrlen);
 487                 *target_addrlen = tswap32(addrlen);
 488             }
 489         }
 490         break;
 491     case SOCKOP_getsockname:
 492         {
 493             int sockfd = tswap32(vptr[0]);
 494             void *target_addr = (void *)tswap32(vptr[1]);
 495             uint32_t *target_addrlen = (void *)tswap32(vptr[2]);
 496             socklen_t addrlen = tswap32(*target_addrlen);
 497             void *addr = alloca(addrlen);
 498
 499             ret = get_errno(getsockname(sockfd, addr, &addrlen));
 500             if (!is_error(ret)) {
 501                 host_to_target_sockaddr(target_addr, addr, addrlen);
 502                 *target_addrlen = tswap32(addrlen);
 503             }
 504         }
 505         break;
 506     case SOCKOP_getpeername:
 507         {
 508             int sockfd = tswap32(vptr[0]);
 509             void *target_addr = (void *)tswap32(vptr[1]);
 510             uint32_t *target_addrlen = (void *)tswap32(vptr[2]);
 511             socklen_t addrlen = tswap32(*target_addrlen);
 512             void *addr = alloca(addrlen);
 513
 514             ret = get_errno(getpeername(sockfd, addr, &addrlen));
 515             if (!is_error(ret)) {
 516                 host_to_target_sockaddr(target_addr, addr, addrlen);
 517                 *target_addrlen = tswap32(addrlen);
 518             }
 519         }
 520         break;
 521     case SOCKOP_socketpair:
 522         {
 523             int domain = tswap32(vptr[0]);
 524             int type = tswap32(vptr[1]);
 525             int protocol = tswap32(vptr[2]);
 526             int32_t *target_tab = (void *)tswap32(vptr[3]);
 527             int tab[2];
 528
 529             ret = get_errno(socketpair(domain, type, protocol, tab));
 530             if (!is_error(ret)) {
 531                 target_tab[0] = tswap32(tab[0]);
 532                 target_tab[1] = tswap32(tab[1]);
 533             }
 534         }
 535         break;
 536     case SOCKOP_send:
 537         {
 538             int sockfd = tswap32(vptr[0]);
 539             void *msg = (void *)tswap32(vptr[1]);
 540             size_t len = tswap32(vptr[2]);
 541             int flags = tswap32(vptr[3]);
 542
 543             ret = get_errno(send(sockfd, msg, len, flags));
 544         }
 545         break;
 546     case SOCKOP_recv:
 547         {
 548             int sockfd = tswap32(vptr[0]);
 549             void *msg = (void *)tswap32(vptr[1]);
 550             size_t len = tswap32(vptr[2]);
 551             int flags = tswap32(vptr[3]);
 552
 553             ret = get_errno(recv(sockfd, msg, len, flags));
 554         }
 555         break;
 556     case SOCKOP_sendto:
 557         {
 558             int sockfd = tswap32(vptr[0]);
 559             void *msg = (void *)tswap32(vptr[1]);
 560             size_t len = tswap32(vptr[2]);
 561             int flags = tswap32(vptr[3]);
 562             void *target_addr = (void *)tswap32(vptr[4]);
 563             socklen_t addrlen = tswap32(vptr[5]);
 564             void *addr = alloca(addrlen);
 565
 566             target_to_host_sockaddr(addr, target_addr, addrlen);
 567             ret = get_errno(sendto(sockfd, msg, len, flags, addr, addrlen));
 568         }
 569         break;
 570     case SOCKOP_recvfrom:
 571         {
 572             int sockfd = tswap32(vptr[0]);
 573             void *msg = (void *)tswap32(vptr[1]);
 574             size_t len = tswap32(vptr[2]);
 575             int flags = tswap32(vptr[3]);
 576             void *target_addr = (void *)tswap32(vptr[4]);
 577             uint32_t *target_addrlen = (void *)tswap32(vptr[5]);
 578             socklen_t addrlen = tswap32(*target_addrlen);
 579             void *addr = alloca(addrlen);
 580
 581             ret = get_errno(recvfrom(sockfd, msg, len, flags, addr, &addrlen));
 582             if (!is_error(ret)) {
 583                 host_to_target_sockaddr(target_addr, addr, addrlen);
 584                 *target_addrlen = tswap32(addrlen);
 585             }
 586         }
 587         break;
 588     case SOCKOP_shutdown:
 589         {
 590             int sockfd = tswap32(vptr[0]);
 591             int how = tswap32(vptr[1]);
 592
 593             ret = get_errno(shutdown(sockfd, how));
 594         }
 595         break;
 596     case SOCKOP_sendmsg:
 597     case SOCKOP_recvmsg:
 598         {
 599             int fd;
 600             struct target_msghdr *msgp;
 601             struct msghdr msg;
 602             int flags, count, i;
 603             struct iovec *vec;
 604             struct target_iovec *target_vec;
 605
 606             msgp = (void *)tswap32(vptr[1]);
 607             msg.msg_name = (void *)tswapl(msgp->msg_name);
 608             msg.msg_namelen = tswapl(msgp->msg_namelen);
 609             msg.msg_controllen = 2 * tswapl(msgp->msg_controllen);
 610             msg.msg_control = alloca(msg.msg_controllen);
 611             msg.msg_flags = tswap32(msgp->msg_flags);
 612
 613             count = tswapl(msgp->msg_iovlen);
 614             vec = alloca(count * sizeof(struct iovec));
 615             target_vec = (void *)tswapl(msgp->msg_iov);
 616             for(i = 0;i < count; i++) {
 617                 vec[i].iov_base = (void *)tswapl(target_vec[i].iov_base);
 618                 vec[i].iov_len = tswapl(target_vec[i].iov_len);
 619             }
 620             msg.msg_iovlen = count;
 621             msg.msg_iov = vec;
 622
 623             fd = tswap32(vptr[0]);
 624             flags = tswap32(vptr[2]);
 625             if (num == SOCKOP_sendmsg) {
 626                 target_to_host_cmsg(&msg, msgp);
 627                 ret = get_errno(sendmsg(fd, &msg, flags));
 628             } else {
 629                 ret = get_errno(recvmsg(fd, &msg, flags));
 630                 if (!is_error(ret))
 631                   host_to_target_cmsg(msgp, &msg);
 632             }
 633         }
 634         break;
 635     case SOCKOP_setsockopt:
 636         {
 637             int sockfd = tswap32(vptr[0]);
 638             int level = tswap32(vptr[1]);
 639             int optname = tswap32(vptr[2]);
 640             void *optval = (void *)tswap32(vptr[3]);
 641             socklen_t optlen = tswap32(vptr[4]);
 642
 643             ret = do_setsockopt(sockfd, level, optname, optval, optlen);
 644         }
 645         break;
 646     case SOCKOP_getsockopt:
 647         {
 648             int sockfd = tswap32(vptr[0]);
 649             int level = tswap32(vptr[1]);
 650             int optname = tswap32(vptr[2]);
 651             void *optval = (void *)tswap32(vptr[3]);
 652             uint32_t *target_len = (void *)tswap32(vptr[4]);
 653             socklen_t optlen = tswap32(*target_len);
 654
 655             ret = do_getsockopt(sockfd, level, optname, optval, &optlen);
 656             if (!is_error(ret))
 657                 *target_len = tswap32(optlen);
 658         }
 659         break;
 660     default:
 661         gemu_log("Unsupported socketcall: %d\n", num);
 662         ret = -ENOSYS;
 663         break;
 664     }
 665     return ret;
 666 }
 667
 668 /* kernel structure types definitions */
 669 #define IFNAMSIZ        16
 670
 671 #define STRUCT(name, list...) STRUCT_ ## name,
 672 #define STRUCT_SPECIAL(name) STRUCT_ ## name,
 673 enum {
 674 #include "syscall_types.h"
 675 };
 676 #undef STRUCT
 677 #undef STRUCT_SPECIAL
 678
 679 #define STRUCT(name, list...) const argtype struct_ ## name ## _def[] = { list, TYPE_NULL };
 680 #define STRUCT_SPECIAL(name)
 681 #include "syscall_types.h"
 682 #undef STRUCT
 683 #undef STRUCT_SPECIAL
 684
 685 typedef struct IOCTLEntry {
 686     int target_cmd;
 687     int host_cmd;
 688     const char *name;
 689     int access;
 690     const argtype arg_type[5];
 691 } IOCTLEntry;
 692
 693 #define IOC_R 0x0001
 694 #define IOC_W 0x0002
 695 #define IOC_RW (IOC_R | IOC_W)
 696
 697 #define MAX_STRUCT_SIZE 4096
 698
 699 const IOCTLEntry ioctl_entries[] = {
 700 #define IOCTL(cmd, access, types...) \
 701     { TARGET_ ## cmd, cmd, #cmd, access, { types } },
 702 #include "ioctls.h"
 703     { 0, 0, },
 704 };
 705
 706 static long do_ioctl(long fd, long cmd, long arg)
 707 {
 708     const IOCTLEntry *ie;
 709     const argtype *arg_type;
 710     long ret;
 711     uint8_t buf_temp[MAX_STRUCT_SIZE];
 712
 713     ie = ioctl_entries;
 714     for(;;) {
 715         if (ie->target_cmd == 0) {
 716             gemu_log("Unsupported ioctl: cmd=0x%04lx\n", cmd);
 717             return -ENOSYS;
 718         }
 719         if (ie->target_cmd == cmd)
 720             break;
 721         ie++;
 722     }
 723     arg_type = ie->arg_type;
 724 #if defined(DEBUG)
 725     gemu_log("ioctl: cmd=0x%04lx (%s)\n", cmd, ie->name);
 726 #endif
 727     switch(arg_type[0]) {
 728     case TYPE_NULL:
 729         /* no argument */
 730         ret = get_errno(ioctl(fd, ie->host_cmd));
 731         break;
 732     case TYPE_PTRVOID:
 733     case TYPE_INT:
 734         /* int argment */
 735         ret = get_errno(ioctl(fd, ie->host_cmd, arg));
 736         break;
 737     case TYPE_PTR:
 738         arg_type++;
 739         switch(ie->access) {
 740         case IOC_R:
 741             ret = get_errno(ioctl(fd, ie->host_cmd, buf_temp));
 742             if (!is_error(ret)) {
 743                 thunk_convert((void *)arg, buf_temp, arg_type, THUNK_TARGET);
 744             }
 745             break;
 746         case IOC_W:
 747             thunk_convert(buf_temp, (void *)arg, arg_type, THUNK_HOST);
 748             ret = get_errno(ioctl(fd, ie->host_cmd, buf_temp));
 749             break;
 750         default:
 751         case IOC_RW:
 752             thunk_convert(buf_temp, (void *)arg, arg_type, THUNK_HOST);
 753             ret = get_errno(ioctl(fd, ie->host_cmd, buf_temp));
 754             if (!is_error(ret)) {
 755                 thunk_convert((void *)arg, buf_temp, arg_type, THUNK_TARGET);
 756             }
 757             break;
 758         }
 759         break;
 760     default:
 761         gemu_log("Unsupported ioctl type: cmd=0x%04lx type=%d\n", cmd, arg_type[0]);
 762         ret = -ENOSYS;
 763         break;
 764     }
 765     return ret;
 766 }
 767
 768 bitmask_transtbl iflag_tbl[] = {
 769         { TARGET_IGNBRK, TARGET_IGNBRK, IGNBRK, IGNBRK },
 770         { TARGET_BRKINT, TARGET_BRKINT, BRKINT, BRKINT },
 771         { TARGET_IGNPAR, TARGET_IGNPAR, IGNPAR, IGNPAR },
 772         { TARGET_PARMRK, TARGET_PARMRK, PARMRK, PARMRK },
 773         { TARGET_INPCK, TARGET_INPCK, INPCK, INPCK },
 774         { TARGET_ISTRIP, TARGET_ISTRIP, ISTRIP, ISTRIP },
 775         { TARGET_INLCR, TARGET_INLCR, INLCR, INLCR },
 776         { TARGET_IGNCR, TARGET_IGNCR, IGNCR, IGNCR },
 777         { TARGET_ICRNL, TARGET_ICRNL, ICRNL, ICRNL },
 778         { TARGET_IUCLC, TARGET_IUCLC, IUCLC, IUCLC },
 779         { TARGET_IXON, TARGET_IXON, IXON, IXON },
 780         { TARGET_IXANY, TARGET_IXANY, IXANY, IXANY },
 781         { TARGET_IXOFF, TARGET_IXOFF, IXOFF, IXOFF },
 782         { TARGET_IMAXBEL, TARGET_IMAXBEL, IMAXBEL, IMAXBEL },
 783         { 0, 0, 0, 0 }
 784 };
 785
 786 bitmask_transtbl oflag_tbl[] = {
 787         { TARGET_OPOST, TARGET_OPOST, OPOST, OPOST },
 788         { TARGET_OLCUC, TARGET_OLCUC, OLCUC, OLCUC },
 789         { TARGET_ONLCR, TARGET_ONLCR, ONLCR, ONLCR },
 790         { TARGET_OCRNL, TARGET_OCRNL, OCRNL, OCRNL },
 791         { TARGET_ONOCR, TARGET_ONOCR, ONOCR, ONOCR },
 792         { TARGET_ONLRET, TARGET_ONLRET, ONLRET, ONLRET },
 793         { TARGET_OFILL, TARGET_OFILL, OFILL, OFILL },
 794         { TARGET_OFDEL, TARGET_OFDEL, OFDEL, OFDEL },
 795         { TARGET_NLDLY, TARGET_NL0, NLDLY, NL0 },
 796         { TARGET_NLDLY, TARGET_NL1, NLDLY, NL1 },
 797         { TARGET_CRDLY, TARGET_CR0, CRDLY, CR0 },
 798         { TARGET_CRDLY, TARGET_CR1, CRDLY, CR1 },
 799         { TARGET_CRDLY, TARGET_CR2, CRDLY, CR2 },
 800         { TARGET_CRDLY, TARGET_CR3, CRDLY, CR3 },
 801         { TARGET_TABDLY, TARGET_TAB0, TABDLY, TAB0 },
 802         { TARGET_TABDLY, TARGET_TAB1, TABDLY, TAB1 },
 803         { TARGET_TABDLY, TARGET_TAB2, TABDLY, TAB2 },
 804         { TARGET_TABDLY, TARGET_TAB3, TABDLY, TAB3 },
 805         { TARGET_BSDLY, TARGET_BS0, BSDLY, BS0 },
 806         { TARGET_BSDLY, TARGET_BS1, BSDLY, BS1 },
 807         { TARGET_VTDLY, TARGET_VT0, VTDLY, VT0 },
 808         { TARGET_VTDLY, TARGET_VT1, VTDLY, VT1 },
 809         { TARGET_FFDLY, TARGET_FF0, FFDLY, FF0 },
 810         { TARGET_FFDLY, TARGET_FF1, FFDLY, FF1 },
 811         { 0, 0, 0, 0 }
 812 };
 813
 814 bitmask_transtbl cflag_tbl[] = {
 815         { TARGET_CBAUD, TARGET_B0, CBAUD, B0 },
 816         { TARGET_CBAUD, TARGET_B50, CBAUD, B50 },
 817         { TARGET_CBAUD, TARGET_B75, CBAUD, B75 },
 818         { TARGET_CBAUD, TARGET_B110, CBAUD, B110 },
 819         { TARGET_CBAUD, TARGET_B134, CBAUD, B134 },
 820         { TARGET_CBAUD, TARGET_B150, CBAUD, B150 },
 821         { TARGET_CBAUD, TARGET_B200, CBAUD, B200 },
 822         { TARGET_CBAUD, TARGET_B300, CBAUD, B300 },
 823         { TARGET_CBAUD, TARGET_B600, CBAUD, B600 },
 824         { TARGET_CBAUD, TARGET_B1200, CBAUD, B1200 },
 825         { TARGET_CBAUD, TARGET_B1800, CBAUD, B1800 },
 826         { TARGET_CBAUD, TARGET_B2400, CBAUD, B2400 },
 827         { TARGET_CBAUD, TARGET_B4800, CBAUD, B4800 },
 828         { TARGET_CBAUD, TARGET_B9600, CBAUD, B9600 },
 829         { TARGET_CBAUD, TARGET_B19200, CBAUD, B19200 },
 830         { TARGET_CBAUD, TARGET_B38400, CBAUD, B38400 },
 831         { TARGET_CBAUD, TARGET_B57600, CBAUD, B57600 },
 832         { TARGET_CBAUD, TARGET_B115200, CBAUD, B115200 },
 833         { TARGET_CBAUD, TARGET_B230400, CBAUD, B230400 },
 834         { TARGET_CBAUD, TARGET_B460800, CBAUD, B460800 },
 835         { TARGET_CSIZE, TARGET_CS5, CSIZE, CS5 },
 836         { TARGET_CSIZE, TARGET_CS6, CSIZE, CS6 },
 837         { TARGET_CSIZE, TARGET_CS7, CSIZE, CS7 },
 838         { TARGET_CSIZE, TARGET_CS8, CSIZE, CS8 },
 839         { TARGET_CSTOPB, TARGET_CSTOPB, CSTOPB, CSTOPB },
 840         { TARGET_CREAD, TARGET_CREAD, CREAD, CREAD },
 841         { TARGET_PARENB, TARGET_PARENB, PARENB, PARENB },
 842         { TARGET_PARODD, TARGET_PARODD, PARODD, PARODD },
 843         { TARGET_HUPCL, TARGET_HUPCL, HUPCL, HUPCL },
 844         { TARGET_CLOCAL, TARGET_CLOCAL, CLOCAL, CLOCAL },
 845         { TARGET_CRTSCTS, TARGET_CRTSCTS, CRTSCTS, CRTSCTS },
 846         { 0, 0, 0, 0 }
 847 };
 848
 849 bitmask_transtbl lflag_tbl[] = {
 850         { TARGET_ISIG, TARGET_ISIG, ISIG, ISIG },
 851         { TARGET_ICANON, TARGET_ICANON, ICANON, ICANON },
 852         { TARGET_XCASE, TARGET_XCASE, XCASE, XCASE },
 853         { TARGET_ECHO, TARGET_ECHO, ECHO, ECHO },
 854         { TARGET_ECHOE, TARGET_ECHOE, ECHOE, ECHOE },
 855         { TARGET_ECHOK, TARGET_ECHOK, ECHOK, ECHOK },
 856         { TARGET_ECHONL, TARGET_ECHONL, ECHONL, ECHONL },
 857         { TARGET_NOFLSH, TARGET_NOFLSH, NOFLSH, NOFLSH },
 858         { TARGET_TOSTOP, TARGET_TOSTOP, TOSTOP, TOSTOP },
 859         { TARGET_ECHOCTL, TARGET_ECHOCTL, ECHOCTL, ECHOCTL },
 860         { TARGET_ECHOPRT, TARGET_ECHOPRT, ECHOPRT, ECHOPRT },
 861         { TARGET_ECHOKE, TARGET_ECHOKE, ECHOKE, ECHOKE },
 862         { TARGET_FLUSHO, TARGET_FLUSHO, FLUSHO, FLUSHO },
 863         { TARGET_PENDIN, TARGET_PENDIN, PENDIN, PENDIN },
 864         { TARGET_IEXTEN, TARGET_IEXTEN, IEXTEN, IEXTEN },
 865         { 0, 0, 0, 0 }
 866 };
 867
 868 static void target_to_host_termios (void *dst, const void *src)
 869 {
 870     struct host_termios *host = dst;
 871     const struct target_termios *target = src;
 872
 873     host->c_iflag =
 874         target_to_host_bitmask(tswap32(target->c_iflag), iflag_tbl);
 875     host->c_oflag =
 876         target_to_host_bitmask(tswap32(target->c_oflag), oflag_tbl);
 877     host->c_cflag =
 878         target_to_host_bitmask(tswap32(target->c_cflag), cflag_tbl);
 879     host->c_lflag =
 880         target_to_host_bitmask(tswap32(target->c_lflag), lflag_tbl);
 881     host->c_line = target->c_line;
 882
 883     host->c_cc[VINTR] = target->c_cc[TARGET_VINTR];
 884     host->c_cc[VQUIT] = target->c_cc[TARGET_VQUIT];
 885     host->c_cc[VERASE] = target->c_cc[TARGET_VERASE];
 886     host->c_cc[VKILL] = target->c_cc[TARGET_VKILL];
 887     host->c_cc[VEOF] = target->c_cc[TARGET_VEOF];
 888     host->c_cc[VTIME] = target->c_cc[TARGET_VTIME];
 889     host->c_cc[VMIN] = target->c_cc[TARGET_VMIN];
 890     host->c_cc[VSWTC] = target->c_cc[TARGET_VSWTC];
 891     host->c_cc[VSTART] = target->c_cc[TARGET_VSTART];
 892     host->c_cc[VSTOP] = target->c_cc[TARGET_VSTOP];
 893     host->c_cc[VSUSP] = target->c_cc[TARGET_VSUSP];
 894     host->c_cc[VEOL] = target->c_cc[TARGET_VEOL];
 895     host->c_cc[VREPRINT] = target->c_cc[TARGET_VREPRINT];
 896     host->c_cc[VDISCARD] = target->c_cc[TARGET_VDISCARD];
 897     host->c_cc[VWERASE] = target->c_cc[TARGET_VWERASE];
 898     host->c_cc[VLNEXT] = target->c_cc[TARGET_VLNEXT];
 899     host->c_cc[VEOL2] = target->c_cc[TARGET_VEOL2];
 900 }
 901
 902 static void host_to_target_termios (void *dst, const void *src)
 903 {
 904     struct target_termios *target = dst;
 905     const struct host_termios *host = src;
 906
 907     target->c_iflag =
 908         tswap32(host_to_target_bitmask(host->c_iflag, iflag_tbl));
 909     target->c_oflag =
 910         tswap32(host_to_target_bitmask(host->c_oflag, oflag_tbl));
 911     target->c_cflag =
 912         tswap32(host_to_target_bitmask(host->c_cflag, cflag_tbl));
 913     target->c_lflag =
 914         tswap32(host_to_target_bitmask(host->c_lflag, lflag_tbl));
 915     target->c_line = host->c_line;
 916
 917     target->c_cc[TARGET_VINTR] = host->c_cc[VINTR];
 918     target->c_cc[TARGET_VQUIT] = host->c_cc[VQUIT];
 919     target->c_cc[TARGET_VERASE] = host->c_cc[VERASE];
 920     target->c_cc[TARGET_VKILL] = host->c_cc[VKILL];
 921     target->c_cc[TARGET_VEOF] = host->c_cc[VEOF];
 922     target->c_cc[TARGET_VTIME] = host->c_cc[VTIME];
 923     target->c_cc[TARGET_VMIN] = host->c_cc[VMIN];
 924     target->c_cc[TARGET_VSWTC] = host->c_cc[VSWTC];
 925     target->c_cc[TARGET_VSTART] = host->c_cc[VSTART];
 926     target->c_cc[TARGET_VSTOP] = host->c_cc[VSTOP];
 927     target->c_cc[TARGET_VSUSP] = host->c_cc[VSUSP];
 928     target->c_cc[TARGET_VEOL] = host->c_cc[VEOL];
 929     target->c_cc[TARGET_VREPRINT] = host->c_cc[VREPRINT];
 930     target->c_cc[TARGET_VDISCARD] = host->c_cc[VDISCARD];
 931     target->c_cc[TARGET_VWERASE] = host->c_cc[VWERASE];
 932     target->c_cc[TARGET_VLNEXT] = host->c_cc[VLNEXT];
 933     target->c_cc[TARGET_VEOL2] = host->c_cc[VEOL2];
 934 }
 935
 936 StructEntry struct_termios_def = {
 937     .convert = { host_to_target_termios, target_to_host_termios },
 938     .size = { sizeof(struct target_termios), sizeof(struct host_termios) },
 939     .align = { __alignof__(struct target_termios), __alignof__(struct host_termios) },
 940 };
 941
 942 #ifdef TARGET_I386
 943
 944 /* NOTE: there is really one LDT for all the threads */
 945 uint8_t *ldt_table;
 946
 947 static int read_ldt(void *ptr, unsigned long bytecount)
 948 {
 949     int size;
 950
 951     if (!ldt_table)
 952         return 0;
 953     size = TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE;
 954     if (size > bytecount)
 955         size = bytecount;
 956     memcpy(ptr, ldt_table, size);
 957     return size;
 958 }
 959
 960 /* XXX: add locking support */
 961 static int write_ldt(CPUX86State *env,
 962                      void *ptr, unsigned long bytecount, int oldmode)
 963 {
 964     struct target_modify_ldt_ldt_s ldt_info;
 965     int seg_32bit, contents, read_exec_only, limit_in_pages;
 966     int seg_not_present, useable;
 967     uint32_t *lp, entry_1, entry_2;
 968
 969     if (bytecount != sizeof(ldt_info))
 970         return -EINVAL;
 971     memcpy(&ldt_info, ptr, sizeof(ldt_info));
 972     tswap32s(&ldt_info.entry_number);
 973     tswapls((long *)&ldt_info.base_addr);
 974     tswap32s(&ldt_info.limit);
 975     tswap32s(&ldt_info.flags);
 976
 977     if (ldt_info.entry_number >= TARGET_LDT_ENTRIES)
 978         return -EINVAL;
 979     seg_32bit = ldt_info.flags & 1;
 980     contents = (ldt_info.flags >> 1) & 3;
 981     read_exec_only = (ldt_info.flags >> 3) & 1;
 982     limit_in_pages = (ldt_info.flags >> 4) & 1;
 983     seg_not_present = (ldt_info.flags >> 5) & 1;
 984     useable = (ldt_info.flags >> 6) & 1;
 985
 986     if (contents == 3) {
 987         if (oldmode)
 988             return -EINVAL;
 989         if (seg_not_present == 0)
 990             return -EINVAL;
 991     }
 992     /* allocate the LDT */
 993     if (!ldt_table) {
 994         ldt_table = malloc(TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE);
 995         if (!ldt_table)
 996             return -ENOMEM;
 997         memset(ldt_table, 0, TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE);
 998         env->ldt.base = ldt_table;
 999         env->ldt.limit = 0xffff;
1000     }
1001
1002     /* NOTE: same code as Linux kernel */
1003     /* Allow LDTs to be cleared by the user. */
1004     if (ldt_info.base_addr == 0 && ldt_info.limit == 0) {
1005         if (oldmode ||
1006             (contents == 0              &&
1007              read_exec_only == 1        &&
1008              seg_32bit == 0             &&
1009              limit_in_pages == 0        &&
1010              seg_not_present == 1       &&
1011              useable == 0 )) {
1012             entry_1 = 0;
1013             entry_2 = 0;
1014             goto install;
1015         }
1016     }
1017
1018     entry_1 = ((ldt_info.base_addr & 0x0000ffff) << 16) |
1019         (ldt_info.limit & 0x0ffff);
1020     entry_2 = (ldt_info.base_addr & 0xff000000) |
1021         ((ldt_info.base_addr & 0x00ff0000) >> 16) |
1022         (ldt_info.limit & 0xf0000) |
1023         ((read_exec_only ^ 1) << 9) |
1024         (contents << 10) |
1025         ((seg_not_present ^ 1) << 15) |
1026         (seg_32bit << 22) |
1027         (limit_in_pages << 23) |
1028         0x7000;
1029     if (!oldmode)
1030         entry_2 |= (useable << 20);
1031
1032     /* Install the new entry ...  */
1033 install:
1034     lp = (uint32_t *)(ldt_table + (ldt_info.entry_number << 3));
1035     lp[0] = tswap32(entry_1);
1036     lp[1] = tswap32(entry_2);
1037     return 0;
1038 }
1039
1040 /* specific and weird i386 syscalls */
1041 int do_modify_ldt(CPUX86State *env, int func, void *ptr, unsigned long bytecount)
1042 {
1043     int ret = -ENOSYS;
1044
1045     switch (func) {
1046     case 0:
1047         ret = read_ldt(ptr, bytecount);
1048         break;
1049     case 1:
1050         ret = write_ldt(env, ptr, bytecount, 1);
1051         break;
1052     case 0x11:
1053         ret = write_ldt(env, ptr, bytecount, 0);
1054         break;
1055     }
1056     return ret;
1057 }
1058
1059 /* vm86 emulation */
1060
1061 #define SAFE_MASK  (0xDD5)
1062
1063 int do_vm86(CPUX86State *env, long subfunction,
1064             struct target_vm86plus_struct * target_v86)
1065 {
1066     TaskState *ts = env->opaque;
1067     int ret;
1068
1069     switch (subfunction) {
1070     case TARGET_VM86_REQUEST_IRQ:
1071     case TARGET_VM86_FREE_IRQ:
1072     case TARGET_VM86_GET_IRQ_BITS:
1073     case TARGET_VM86_GET_AND_RESET_IRQ:
1074         gemu_log("qemu: unsupported vm86 subfunction (%ld)\n", subfunction);
1075         ret = -EINVAL;
1076         goto out;
1077     case TARGET_VM86_PLUS_INSTALL_CHECK:
1078         /* NOTE: on old vm86 stuff this will return the error
1079            from verify_area(), because the subfunction is
1080            interpreted as (invalid) address to vm86_struct.
1081            So the installation check works.
1082             */
1083         ret = 0;
1084         goto out;
1085     }
1086
1087     ts->target_v86 = target_v86;
1088     /* save current CPU regs */
1089     ts->vm86_saved_regs.eax = 0; /* default vm86 syscall return code */
1090     ts->vm86_saved_regs.ebx = env->regs[R_EBX];
1091     ts->vm86_saved_regs.ecx = env->regs[R_ECX];
1092     ts->vm86_saved_regs.edx = env->regs[R_EDX];
1093     ts->vm86_saved_regs.esi = env->regs[R_ESI];
1094     ts->vm86_saved_regs.edi = env->regs[R_EDI];
1095     ts->vm86_saved_regs.ebp = env->regs[R_EBP];
1096     ts->vm86_saved_regs.esp = env->regs[R_ESP];
1097     ts->vm86_saved_regs.eflags = env->eflags;
1098     ts->vm86_saved_regs.eip  = env->eip;
1099     ts->vm86_saved_regs.cs = env->segs[R_CS];
1100     ts->vm86_saved_regs.ss = env->segs[R_SS];
1101     ts->vm86_saved_regs.ds = env->segs[R_DS];
1102     ts->vm86_saved_regs.es = env->segs[R_ES];
1103     ts->vm86_saved_regs.fs = env->segs[R_FS];
1104     ts->vm86_saved_regs.gs = env->segs[R_GS];
1105
1106     /* build vm86 CPU state */
1107     env->eflags = (env->eflags & ~SAFE_MASK) |
1108         (tswap32(target_v86->regs.eflags) & SAFE_MASK) | VM_MASK;
1109
1110     env->regs[R_EBX] = tswap32(target_v86->regs.ebx);
1111     env->regs[R_ECX] = tswap32(target_v86->regs.ecx);
1112     env->regs[R_EDX] = tswap32(target_v86->regs.edx);
1113     env->regs[R_ESI] = tswap32(target_v86->regs.esi);
1114     env->regs[R_EDI] = tswap32(target_v86->regs.edi);
1115     env->regs[R_EBP] = tswap32(target_v86->regs.ebp);
1116     env->regs[R_ESP] = tswap32(target_v86->regs.esp);
1117     env->eip = tswap32(target_v86->regs.eip);
1118     cpu_x86_load_seg(env, R_CS, tswap16(target_v86->regs.cs));
1119     cpu_x86_load_seg(env, R_SS, tswap16(target_v86->regs.ss));
1120     cpu_x86_load_seg(env, R_DS, tswap16(target_v86->regs.ds));
1121     cpu_x86_load_seg(env, R_ES, tswap16(target_v86->regs.es));
1122     cpu_x86_load_seg(env, R_FS, tswap16(target_v86->regs.fs));
1123     cpu_x86_load_seg(env, R_GS, tswap16(target_v86->regs.gs));
1124     ret = tswap32(target_v86->regs.eax); /* eax will be restored at
1125                                             the end of the syscall */
1126     /* now the virtual CPU is ready for vm86 execution ! */
1127  out:
1128     return ret;
1129 }
1130
1131 /* this stack is the equivalent of the kernel stack associated with a
1132    thread/process */
1133 #define NEW_STACK_SIZE 8192
1134
1135 static int clone_func(void *arg)
1136 {
1137     CPUX86State *env = arg;
1138     cpu_loop(env);
1139     /* never exits */
1140     return 0;
1141 }
1142
1143 int do_fork(CPUX86State *env, unsigned int flags, unsigned long newsp)
1144 {
1145     int ret;
1146     TaskState *ts;
1147     uint8_t *new_stack;
1148     CPUX86State *new_env;
1149
1150     if (flags & CLONE_VM) {
1151         if (!newsp)
1152             newsp = env->regs[R_ESP];
1153         ts = malloc(sizeof(TaskState) + NEW_STACK_SIZE);
1154         memset(ts, 0, sizeof(TaskState));
1155         new_stack = ts->stack;
1156         ts->used = 1;
1157         /* add in task state list */
1158         ts->next = first_task_state;
1159         first_task_state = ts;
1160         /* we create a new CPU instance. */
1161         new_env = cpu_x86_init();
1162         memcpy(new_env, env, sizeof(CPUX86State));
1163         new_env->regs[R_ESP] = newsp;
1164         new_env->regs[R_EAX] = 0;
1165         new_env->opaque = ts;
1166         ret = clone(clone_func, new_stack + NEW_STACK_SIZE, flags, new_env);
1167     } else {
1168         /* if no CLONE_VM, we consider it is a fork */
1169         if ((flags & ~CSIGNAL) != 0)
1170             return -EINVAL;
1171         ret = fork();
1172     }
1173     return ret;
1174 }
1175
1176 #endif
1177
1178 #define high2lowuid(x) (x)
1179 #define high2lowgid(x) (x)
1180 #define low2highuid(x) (x)
1181 #define low2highgid(x) (x)
1182
1183 void syscall_init(void)
1184 {
1185 #define STRUCT(name, list...) thunk_register_struct(STRUCT_ ## name, #name, struct_ ## name ## _def);
1186 #define STRUCT_SPECIAL(name) thunk_register_struct_direct(STRUCT_ ## name, #name, &struct_ ## name ## _def);
1187 #include "syscall_types.h"
1188 #undef STRUCT
1189 #undef STRUCT_SPECIAL
1190 }
1191
1192 long do_syscall(void *cpu_env, int num, long arg1, long arg2, long arg3,
1193                 long arg4, long arg5, long arg6)
1194 {
1195     long ret;
1196     struct stat st;
1197     struct kernel_statfs *stfs;
1198
1199 #ifdef DEBUG
1200     gemu_log("syscall %d\n", num);
1201 #endif
1202     switch(num) {
1203     case TARGET_NR_exit:
1204 #ifdef HAVE_GPROF
1205         _mcleanup();
1206 #endif
1207         /* XXX: should free thread stack and CPU env */
1208         _exit(arg1);
1209         ret = 0; /* avoid warning */
1210         break;
1211     case TARGET_NR_read:
1212         ret = get_errno(read(arg1, (void *)arg2, arg3));
1213         break;
1214     case TARGET_NR_write:
1215         ret = get_errno(write(arg1, (void *)arg2, arg3));
1216         break;
1217     case TARGET_NR_open:
1218         ret = get_errno(open(path((const char *)arg1), arg2, arg3));
1219         break;
1220     case TARGET_NR_close:
1221         ret = get_errno(close(arg1));
1222         break;
1223     case TARGET_NR_brk:
1224         ret = do_brk((char *)arg1);
1225         break;
1226     case TARGET_NR_fork:
1227         ret = get_errno(do_fork(cpu_env, SIGCHLD, 0));
1228         break;
1229     case TARGET_NR_waitpid:
1230         {
1231             int *status = (int *)arg2;
1232             ret = get_errno(waitpid(arg1, status, arg3));
1233             if (!is_error(ret) && status)
1234                 tswapls((long *)&status);
1235         }
1236         break;
1237     case TARGET_NR_creat:
1238         ret = get_errno(creat((const char *)arg1, arg2));
1239         break;
1240     case TARGET_NR_link:
1241         ret = get_errno(link((const char *)arg1, (const char *)arg2));
1242         break;
1243     case TARGET_NR_unlink:
1244         ret = get_errno(unlink((const char *)arg1));
1245         break;
1246     case TARGET_NR_execve:
1247         {
1248             char **argp, **envp;
1249             int argc, envc;
1250             uint32_t *p;
1251             char **q;
1252
1253             argc = 0;
1254             for (p = (void *)arg2; *p; p++)
1255                 argc++;
1256             envc = 0;
1257             for (p = (void *)arg3; *p; p++)
1258                 envc++;
1259
1260             argp = alloca((argc + 1) * sizeof(void *));
1261             envp = alloca((envc + 1) * sizeof(void *));
1262
1263             for (p = (void *)arg2, q = argp; *p; p++, q++)
1264                 *q = (void *)tswap32(*p);
1265             *q = NULL;
1266
1267             for (p = (void *)arg3, q = envp; *p; p++, q++)
1268                 *q = (void *)tswap32(*p);
1269             *q = NULL;
1270
1271             ret = get_errno(execve((const char *)arg1, argp, envp));
1272         }
1273         break;
1274     case TARGET_NR_chdir:
1275         ret = get_errno(chdir((const char *)arg1));
1276         break;
1277     case TARGET_NR_time:
1278         {
1279             int *time_ptr = (int *)arg1;
1280             ret = get_errno(time((time_t *)time_ptr));
1281             if (!is_error(ret) && time_ptr)
1282                 tswap32s(time_ptr);
1283         }
1284         break;
1285     case TARGET_NR_mknod:
1286         ret = get_errno(mknod((const char *)arg1, arg2, arg3));
1287         break;
1288     case TARGET_NR_chmod:
1289         ret = get_errno(chmod((const char *)arg1, arg2));
1290         break;
1291     case TARGET_NR_lchown:
1292         ret = get_errno(chown((const char *)arg1, arg2, arg3));
1293         break;
1294     case TARGET_NR_break:
1295         goto unimplemented;
1296     case TARGET_NR_oldstat:
1297         goto unimplemented;
1298     case TARGET_NR_lseek:
1299         ret = get_errno(lseek(arg1, arg2, arg3));
1300         break;
1301     case TARGET_NR_getpid:
1302         ret = get_errno(getpid());
1303         break;
1304     case TARGET_NR_mount:
1305         /* need to look at the data field */
1306         goto unimplemented;
1307     case TARGET_NR_umount:
1308         ret = get_errno(umount((const char *)arg1));
1309         break;
1310     case TARGET_NR_setuid:
1311         ret = get_errno(setuid(low2highuid(arg1)));
1312         break;
1313     case TARGET_NR_getuid:
1314         ret = get_errno(getuid());
1315         break;
1316     case TARGET_NR_stime:
1317         {
1318             int *time_ptr = (int *)arg1;
1319             if (time_ptr)
1320                 tswap32s(time_ptr);
1321             ret = get_errno(stime((time_t *)time_ptr));
1322         }
1323         break;
1324     case TARGET_NR_ptrace:
1325         goto unimplemented;
1326     case TARGET_NR_alarm:
1327         ret = alarm(arg1);
1328         break;
1329     case TARGET_NR_oldfstat:
1330         goto unimplemented;
1331     case TARGET_NR_pause:
1332         ret = get_errno(pause());
1333         break;
1334     case TARGET_NR_utime:
1335         goto unimplemented;
1336     case TARGET_NR_stty:
1337         goto unimplemented;
1338     case TARGET_NR_gtty:
1339         goto unimplemented;
1340     case TARGET_NR_access:
1341         ret = get_errno(access((const char *)arg1, arg2));
1342         break;
1343     case TARGET_NR_nice:
1344         ret = get_errno(nice(arg1));
1345         break;
1346     case TARGET_NR_ftime:
1347         goto unimplemented;
1348     case TARGET_NR_sync:
1349         sync();
1350         ret = 0;
1351         break;
1352     case TARGET_NR_kill:
1353         ret = get_errno(kill(arg1, arg2));
1354         break;
1355     case TARGET_NR_rename:
1356         ret = get_errno(rename((const char *)arg1, (const char *)arg2));
1357         break;
1358     case TARGET_NR_mkdir:
1359         ret = get_errno(mkdir((const char *)arg1, arg2));
1360         break;
1361     case TARGET_NR_rmdir:
1362         ret = get_errno(rmdir((const char *)arg1));
1363         break;
1364     case TARGET_NR_dup:
1365         ret = get_errno(dup(arg1));
1366         break;
1367     case TARGET_NR_pipe:
1368         {
1369             int *pipe_ptr = (int *)arg1;
1370             ret = get_errno(pipe(pipe_ptr));
1371             if (!is_error(ret)) {
1372                 tswap32s(&pipe_ptr[0]);
1373                 tswap32s(&pipe_ptr[1]);
1374             }
1375         }
1376         break;
1377     case TARGET_NR_times:
1378         {
1379             struct target_tms *tmsp = (void *)arg1;
1380             struct tms tms;
1381             ret = get_errno(times(&tms));
1382             if (tmsp) {
1383                 tmsp->tms_utime = tswapl(tms.tms_utime);
1384                 tmsp->tms_stime = tswapl(tms.tms_stime);
1385                 tmsp->tms_cutime = tswapl(tms.tms_cutime);
1386                 tmsp->tms_cstime = tswapl(tms.tms_cstime);
1387             }
1388         }
1389         break;
1390     case TARGET_NR_prof:
1391         goto unimplemented;
1392     case TARGET_NR_setgid:
1393         ret = get_errno(setgid(low2highgid(arg1)));
1394         break;
1395     case TARGET_NR_getgid:
1396         ret = get_errno(getgid());
1397         break;
1398     case TARGET_NR_signal:
1399         goto unimplemented;
1400     case TARGET_NR_geteuid:
1401         ret = get_errno(geteuid());
1402         break;
1403     case TARGET_NR_getegid:
1404         ret = get_errno(getegid());
1405         break;
1406     case TARGET_NR_acct:
1407         goto unimplemented;
1408     case TARGET_NR_umount2:
1409         ret = get_errno(umount2((const char *)arg1, arg2));
1410         break;
1411     case TARGET_NR_lock:
1412         goto unimplemented;
1413     case TARGET_NR_ioctl:
1414         ret = do_ioctl(arg1, arg2, arg3);
1415         break;
1416     case TARGET_NR_fcntl:
1417         switch(arg2) {
1418         case F_GETLK:
1419         case F_SETLK:
1420         case F_SETLKW:
1421             goto unimplemented;
1422         default:
1423             ret = get_errno(fcntl(arg1, arg2, arg3));
1424             break;
1425         }
1426         break;
1427     case TARGET_NR_mpx:
1428         goto unimplemented;
1429     case TARGET_NR_setpgid:
1430         ret = get_errno(setpgid(arg1, arg2));
1431         break;
1432     case TARGET_NR_ulimit:
1433         goto unimplemented;
1434     case TARGET_NR_oldolduname:
1435         goto unimplemented;
1436     case TARGET_NR_umask:
1437         ret = get_errno(umask(arg1));
1438         break;
1439     case TARGET_NR_chroot:
1440         ret = get_errno(chroot((const char *)arg1));
1441         break;
1442     case TARGET_NR_ustat:
1443         goto unimplemented;
1444     case TARGET_NR_dup2:
1445         ret = get_errno(dup2(arg1, arg2));
1446         break;
1447     case TARGET_NR_getppid:
1448         ret = get_errno(getppid());
1449         break;
1450     case TARGET_NR_getpgrp:
1451         ret = get_errno(getpgrp());
1452         break;
1453     case TARGET_NR_setsid:
1454         ret = get_errno(setsid());
1455         break;
1456     case TARGET_NR_sigaction:
1457         {
1458             struct target_old_sigaction *old_act = (void *)arg2;
1459             struct target_old_sigaction *old_oact = (void *)arg3;
1460             struct target_sigaction act, oact, *pact;
1461             if (old_act) {
1462                 act._sa_handler = old_act->_sa_handler;
1463                 target_siginitset(&act.sa_mask, old_act->sa_mask);
1464                 act.sa_flags = old_act->sa_flags;
1465                 act.sa_restorer = old_act->sa_restorer;
1466                 pact = &act;
1467             } else {
1468                 pact = NULL;
1469             }
1470             ret = get_errno(do_sigaction(arg1, pact, &oact));
1471             if (!is_error(ret) && old_oact) {
1472                 old_oact->_sa_handler = oact._sa_handler;
1473                 old_oact->sa_mask = oact.sa_mask.sig[0];
1474                 old_oact->sa_flags = oact.sa_flags;
1475                 old_oact->sa_restorer = oact.sa_restorer;
1476             }
1477         }
1478         break;
1479     case TARGET_NR_rt_sigaction:
1480         ret = get_errno(do_sigaction(arg1, (void *)arg2, (void *)arg3));
1481         break;
1482     case TARGET_NR_sgetmask:
1483         {
1484             sigset_t cur_set;
1485             target_ulong target_set;
1486             sigprocmask(0, NULL, &cur_set);
1487             host_to_target_old_sigset(&target_set, &cur_set);
1488             ret = target_set;
1489         }
1490         break;
1491     case TARGET_NR_ssetmask:
1492         {
1493             sigset_t set, oset, cur_set;
1494             target_ulong target_set = arg1;
1495             sigprocmask(0, NULL, &cur_set);
1496             target_to_host_old_sigset(&set, &target_set);
1497             sigorset(&set, &set, &cur_set);
1498             sigprocmask(SIG_SETMASK, &set, &oset);
1499             host_to_target_old_sigset(&target_set, &oset);
1500             ret = target_set;
1501         }
1502         break;
1503     case TARGET_NR_sigprocmask:
1504         {
1505             int how = arg1;
1506             sigset_t set, oldset, *set_ptr;
1507             target_ulong *pset = (void *)arg2, *poldset = (void *)arg3;
1508
1509             if (pset) {
1510                 switch(how) {
1511                 case TARGET_SIG_BLOCK:
1512                     how = SIG_BLOCK;
1513                     break;
1514                 case TARGET_SIG_UNBLOCK:
1515                     how = SIG_UNBLOCK;
1516                     break;
1517                 case TARGET_SIG_SETMASK:
1518                     how = SIG_SETMASK;
1519                     break;
1520                 default:
1521                     ret = -EINVAL;
1522                     goto fail;
1523                 }
1524                 target_to_host_old_sigset(&set, pset);
1525                 set_ptr = &set;
1526             } else {
1527                 how = 0;
1528                 set_ptr = NULL;
1529             }
1530             ret = get_errno(sigprocmask(arg1, set_ptr, &oldset));
1531             if (!is_error(ret) && poldset) {
1532                 host_to_target_old_sigset(poldset, &oldset);
1533             }
1534         }
1535         break;
1536     case TARGET_NR_rt_sigprocmask:
1537         {
1538             int how = arg1;
1539             sigset_t set, oldset, *set_ptr;
1540             target_sigset_t *pset = (void *)arg2;
1541             target_sigset_t *poldset = (void *)arg3;
1542
1543             if (pset) {
1544                 switch(how) {
1545                 case TARGET_SIG_BLOCK:
1546                     how = SIG_BLOCK;
1547                     break;
1548                 case TARGET_SIG_UNBLOCK:
1549                     how = SIG_UNBLOCK;
1550                     break;
1551                 case TARGET_SIG_SETMASK:
1552                     how = SIG_SETMASK;
1553                     break;
1554                 default:
1555                     ret = -EINVAL;
1556                     goto fail;
1557                 }
1558                 target_to_host_sigset(&set, pset);
1559                 set_ptr = &set;
1560             } else {
1561                 how = 0;
1562                 set_ptr = NULL;
1563             }
1564             ret = get_errno(sigprocmask(how, set_ptr, &oldset));
1565             if (!is_error(ret) && poldset) {
1566                 host_to_target_sigset(poldset, &oldset);
1567             }
1568         }
1569         break;
1570     case TARGET_NR_sigpending:
1571         {
1572             sigset_t set;
1573             ret = get_errno(sigpending(&set));
1574             if (!is_error(ret)) {
1575                 host_to_target_old_sigset((target_ulong *)arg1, &set);
1576             }
1577         }
1578         break;
1579     case TARGET_NR_rt_sigpending:
1580         {
1581             sigset_t set;
1582             ret = get_errno(sigpending(&set));
1583             if (!is_error(ret)) {
1584                 host_to_target_sigset((target_sigset_t *)arg1, &set);
1585             }
1586         }
1587         break;
1588     case TARGET_NR_sigsuspend:
1589         {
1590             sigset_t set;
1591             target_to_host_old_sigset(&set, (target_ulong *)arg1);
1592             ret = get_errno(sigsuspend(&set));
1593         }
1594         break;
1595     case TARGET_NR_rt_sigsuspend:
1596         {
1597             sigset_t set;
1598             target_to_host_sigset(&set, (target_sigset_t *)arg1);
1599             ret = get_errno(sigsuspend(&set));
1600         }
1601         break;
1602     case TARGET_NR_rt_sigtimedwait:
1603         {
1604             target_sigset_t *target_set = (void *)arg1;
1605             target_siginfo_t *target_uinfo = (void *)arg2;
1606             struct target_timespec *target_uts = (void *)arg3;
1607             sigset_t set;
1608             struct timespec uts, *puts;
1609             siginfo_t uinfo;
1610
1611             target_to_host_sigset(&set, target_set);
1612             if (target_uts) {
1613                 puts = &uts;
1614                 puts->tv_sec = tswapl(target_uts->tv_sec);
1615                 puts->tv_nsec = tswapl(target_uts->tv_nsec);
1616             } else {
1617                 puts = NULL;
1618             }
1619             ret = get_errno(sigtimedwait(&set, &uinfo, puts));
1620             if (!is_error(ret) && target_uinfo) {
1621                 host_to_target_siginfo(target_uinfo, &uinfo);
1622             }
1623         }
1624         break;
1625     case TARGET_NR_rt_sigqueueinfo:
1626         {
1627             siginfo_t uinfo;
1628             target_to_host_siginfo(&uinfo, (target_siginfo_t *)arg3);
1629             ret = get_errno(sys_rt_sigqueueinfo(arg1, arg2, &uinfo));
1630         }
1631         break;
1632     case TARGET_NR_sigreturn:
1633         /* NOTE: ret is eax, so not transcoding must be done */
1634         ret = do_sigreturn(cpu_env);
1635         break;
1636     case TARGET_NR_rt_sigreturn:
1637         /* NOTE: ret is eax, so not transcoding must be done */
1638         ret = do_rt_sigreturn(cpu_env);
1639         break;
1640     case TARGET_NR_setreuid:
1641         ret = get_errno(setreuid(arg1, arg2));
1642         break;
1643     case TARGET_NR_setregid:
1644         ret = get_errno(setregid(arg1, arg2));
1645         break;
1646     case TARGET_NR_sethostname:
1647         ret = get_errno(sethostname((const char *)arg1, arg2));
1648         break;
1649     case TARGET_NR_setrlimit:
1650         {
1651             /* XXX: convert resource ? */
1652             int resource = arg1;
1653             struct target_rlimit *target_rlim = (void *)arg2;
1654             struct rlimit rlim;
1655             rlim.rlim_cur = tswapl(target_rlim->rlim_cur);
1656             rlim.rlim_max = tswapl(target_rlim->rlim_max);
1657             ret = get_errno(setrlimit(resource, &rlim));
1658         }
1659         break;
1660     case TARGET_NR_getrlimit:
1661         {
1662             /* XXX: convert resource ? */
1663             int resource = arg1;
1664             struct target_rlimit *target_rlim = (void *)arg2;
1665             struct rlimit rlim;
1666
1667             ret = get_errno(getrlimit(resource, &rlim));
1668             if (!is_error(ret)) {
1669                 target_rlim->rlim_cur = tswapl(rlim.rlim_cur);
1670                 target_rlim->rlim_max = tswapl(rlim.rlim_max);
1671             }
1672         }
1673         break;
1674     case TARGET_NR_getrusage:
1675         goto unimplemented;
1676     case TARGET_NR_gettimeofday:
1677         {
1678             struct target_timeval *target_tv = (void *)arg1;
1679             struct timeval tv;
1680             ret = get_errno(gettimeofday(&tv, NULL));
1681             if (!is_error(ret)) {
1682                 host_to_target_timeval(target_tv, &tv);
1683             }
1684         }
1685         break;
1686     case TARGET_NR_settimeofday:
1687         {
1688             struct target_timeval *target_tv = (void *)arg1;
1689             struct timeval tv;
1690             target_to_host_timeval(&tv, target_tv);
1691             ret = get_errno(settimeofday(&tv, NULL));
1692         }
1693         break;
1694     case TARGET_NR_getgroups:
1695         goto unimplemented;
1696     case TARGET_NR_setgroups:
1697         goto unimplemented;
1698     case TARGET_NR_select:
1699         goto unimplemented;
1700     case TARGET_NR_symlink:
1701         ret = get_errno(symlink((const char *)arg1, (const char *)arg2));
1702         break;
1703     case TARGET_NR_oldlstat:
1704         goto unimplemented;
1705     case TARGET_NR_readlink:
1706         ret = get_errno(readlink(path((const char *)arg1), (char *)arg2, arg3));
1707         break;
1708     case TARGET_NR_uselib:
1709         goto unimplemented;
1710     case TARGET_NR_swapon:
1711         ret = get_errno(swapon((const char *)arg1, arg2));
1712         break;
1713     case TARGET_NR_reboot:
1714         goto unimplemented;
1715     case TARGET_NR_readdir:
1716         goto unimplemented;
1717 #ifdef TARGET_I386
1718     case TARGET_NR_mmap:
1719         {
1720             uint32_t v1, v2, v3, v4, v5, v6, *vptr;
1721             vptr = (uint32_t *)arg1;
1722             v1 = tswap32(vptr[0]);
1723             v2 = tswap32(vptr[1]);
1724             v3 = tswap32(vptr[2]);
1725             v4 = tswap32(vptr[3]);
1726             v5 = tswap32(vptr[4]);
1727             v6 = tswap32(vptr[5]);
1728             ret = get_errno((long)mmap((void *)v1, v2, v3, v4, v5, v6));
1729         }
1730         break;
1731 #endif
1732 #ifdef TARGET_I386
1733     case TARGET_NR_mmap2:
1734 #else
1735     case TARGET_NR_mmap:
1736 #endif
1737         ret = get_errno((long)mmap((void *)arg1, arg2, arg3, arg4, arg5, arg6));
1738         break;
1739     case TARGET_NR_munmap:
1740         ret = get_errno(munmap((void *)arg1, arg2));
1741         break;
1742     case TARGET_NR_mprotect:
1743         ret = get_errno(mprotect((void *)arg1, arg2, arg3));
1744         break;
1745     case TARGET_NR_mremap:
1746         ret = get_errno((long)mremap((void *)arg1, arg2, arg3, arg4));
1747         break;
1748     case TARGET_NR_msync:
1749         ret = get_errno(msync((void *)arg1, arg2, arg3));
1750         break;
1751     case TARGET_NR_mlock:
1752         ret = get_errno(mlock((void *)arg1, arg2));
1753         break;
1754     case TARGET_NR_munlock:
1755         ret = get_errno(munlock((void *)arg1, arg2));
1756         break;
1757     case TARGET_NR_mlockall:
1758         ret = get_errno(mlockall(arg1));
1759         break;
1760     case TARGET_NR_munlockall:
1761         ret = get_errno(munlockall());
1762         break;
1763     case TARGET_NR_truncate:
1764         ret = get_errno(truncate((const char *)arg1, arg2));
1765         break;
1766     case TARGET_NR_ftruncate:
1767         ret = get_errno(ftruncate(arg1, arg2));
1768         break;
1769     case TARGET_NR_fchmod:
1770         ret = get_errno(fchmod(arg1, arg2));
1771         break;
1772     case TARGET_NR_fchown:
1773         ret = get_errno(fchown(arg1, arg2, arg3));
1774         break;
1775     case TARGET_NR_getpriority:
1776         ret = get_errno(getpriority(arg1, arg2));
1777         break;
1778     case TARGET_NR_setpriority:
1779         ret = get_errno(setpriority(arg1, arg2, arg3));
1780         break;
1781     case TARGET_NR_profil:
1782         goto unimplemented;
1783     case TARGET_NR_statfs:
1784         stfs = (void *)arg2;
1785         ret = get_errno(sys_statfs(path((const char *)arg1), stfs));
1786     convert_statfs:
1787         if (!is_error(ret)) {
1788             tswap32s(&stfs->f_type);
1789             tswap32s(&stfs->f_bsize);
1790             tswap32s(&stfs->f_blocks);
1791             tswap32s(&stfs->f_bfree);
1792             tswap32s(&stfs->f_bavail);
1793             tswap32s(&stfs->f_files);
1794             tswap32s(&stfs->f_ffree);
1795             tswap32s(&stfs->f_fsid.val[0]);
1796             tswap32s(&stfs->f_fsid.val[1]);
1797             tswap32s(&stfs->f_namelen);
1798         }
1799         break;
1800     case TARGET_NR_fstatfs:
1801         stfs = (void *)arg2;
1802         ret = get_errno(sys_fstatfs(arg1, stfs));
1803         goto convert_statfs;
1804     case TARGET_NR_ioperm:
1805         goto unimplemented;
1806     case TARGET_NR_socketcall:
1807         ret = do_socketcall(arg1, (int32_t *)arg2);
1808         break;
1809     case TARGET_NR_syslog:
1810         goto unimplemented;
1811     case TARGET_NR_setitimer:
1812         {
1813             struct target_itimerval *target_value = (void *)arg2;
1814             struct target_itimerval *target_ovalue = (void *)arg3;
1815             struct itimerval value, ovalue, *pvalue;
1816
1817             if (target_value) {
1818                 pvalue = &value;
1819                 target_to_host_timeval(&pvalue->it_interval,
1820                                        &target_value->it_interval);
1821                 target_to_host_timeval(&pvalue->it_value,
1822                                        &target_value->it_value);
1823             } else {
1824                 pvalue = NULL;
1825             }
1826             ret = get_errno(setitimer(arg1, pvalue, &ovalue));
1827             if (!is_error(ret) && target_ovalue) {
1828                 host_to_target_timeval(&target_ovalue->it_interval,
1829                                        &ovalue.it_interval);
1830                 host_to_target_timeval(&target_ovalue->it_value,
1831                                        &ovalue.it_value);
1832             }
1833         }
1834         break;
1835     case TARGET_NR_getitimer:
1836         {
1837             struct target_itimerval *target_value = (void *)arg2;
1838             struct itimerval value;
1839
1840             ret = get_errno(getitimer(arg1, &value));
1841             if (!is_error(ret) && target_value) {
1842                 host_to_target_timeval(&target_value->it_interval,
1843                                        &value.it_interval);
1844                 host_to_target_timeval(&target_value->it_value,
1845                                        &value.it_value);
1846             }
1847         }
1848         break;
1849     case TARGET_NR_stat:
1850         ret = get_errno(stat(path((const char *)arg1), &st));
1851         goto do_stat;
1852     case TARGET_NR_lstat:
1853         ret = get_errno(lstat(path((const char *)arg1), &st));
1854         goto do_stat;
1855     case TARGET_NR_fstat:
1856         {
1857             ret = get_errno(fstat(arg1, &st));
1858         do_stat:
1859             if (!is_error(ret)) {
1860                 struct target_stat *target_st = (void *)arg2;
1861                 target_st->st_dev = tswap16(st.st_dev);
1862                 target_st->st_ino = tswapl(st.st_ino);
1863                 target_st->st_mode = tswap16(st.st_mode);
1864                 target_st->st_nlink = tswap16(st.st_nlink);
1865                 target_st->st_uid = tswap16(st.st_uid);
1866                 target_st->st_gid = tswap16(st.st_gid);
1867                 target_st->st_rdev = tswap16(st.st_rdev);
1868                 target_st->st_size = tswapl(st.st_size);
1869                 target_st->st_blksize = tswapl(st.st_blksize);
1870                 target_st->st_blocks = tswapl(st.st_blocks);
1871                 target_st->target_st_atime = tswapl(st.st_atime);
1872                 target_st->target_st_mtime = tswapl(st.st_mtime);
1873                 target_st->target_st_ctime = tswapl(st.st_ctime);
1874             }
1875         }
1876         break;
1877     case TARGET_NR_olduname:
1878         goto unimplemented;
1879     case TARGET_NR_iopl:
1880         goto unimplemented;
1881     case TARGET_NR_vhangup:
1882         ret = get_errno(vhangup());
1883         break;
1884     case TARGET_NR_idle:
1885         goto unimplemented;
1886     case TARGET_NR_wait4:
1887         {
1888             int status;
1889             target_long *status_ptr = (void *)arg2;
1890             struct rusage rusage, *rusage_ptr;
1891             struct target_rusage *target_rusage = (void *)arg4;
1892             if (target_rusage)
1893                 rusage_ptr = &rusage;
1894             else
1895                 rusage_ptr = NULL;
1896             ret = get_errno(wait4(arg1, &status, arg3, rusage_ptr));
1897             if (!is_error(ret)) {
1898                 if (status_ptr)
1899                     *status_ptr = tswap32(status);
1900                 if (target_rusage) {
1901                     target_rusage->ru_utime.tv_sec = tswapl(rusage.ru_utime.tv_sec);
1902                     target_rusage->ru_utime.tv_usec = tswapl(rusage.ru_utime.tv_usec);
1903                     target_rusage->ru_stime.tv_sec = tswapl(rusage.ru_stime.tv_sec);
1904                     target_rusage->ru_stime.tv_usec = tswapl(rusage.ru_stime.tv_usec);
1905                     target_rusage->ru_maxrss = tswapl(rusage.ru_maxrss);
1906                     target_rusage->ru_ixrss = tswapl(rusage.ru_ixrss);
1907                     target_rusage->ru_idrss = tswapl(rusage.ru_idrss);
1908                     target_rusage->ru_isrss = tswapl(rusage.ru_isrss);
1909                     target_rusage->ru_minflt = tswapl(rusage.ru_minflt);
1910                     target_rusage->ru_majflt = tswapl(rusage.ru_majflt);
1911                     target_rusage->ru_nswap = tswapl(rusage.ru_nswap);
1912                     target_rusage->ru_inblock = tswapl(rusage.ru_inblock);
1913                     target_rusage->ru_oublock = tswapl(rusage.ru_oublock);
1914                     target_rusage->ru_msgsnd = tswapl(rusage.ru_msgsnd);
1915                     target_rusage->ru_msgrcv = tswapl(rusage.ru_msgrcv);
1916                     target_rusage->ru_nsignals = tswapl(rusage.ru_nsignals);
1917                     target_rusage->ru_nvcsw = tswapl(rusage.ru_nvcsw);
1918                     target_rusage->ru_nivcsw = tswapl(rusage.ru_nivcsw);
1919                 }
1920             }
1921         }
1922         break;
1923     case TARGET_NR_swapoff:
1924         ret = get_errno(swapoff((const char *)arg1));
1925         break;
1926     case TARGET_NR_sysinfo:
1927         goto unimplemented;
1928     case TARGET_NR_ipc:
1929         goto unimplemented;
1930     case TARGET_NR_fsync:
1931         ret = get_errno(fsync(arg1));
1932         break;
1933     case TARGET_NR_clone:
1934         ret = get_errno(do_fork(cpu_env, arg1, arg2));
1935         break;
1936 #ifdef __NR_exit_group
1937         /* new thread calls */
1938     case TARGET_NR_exit_group:
1939         ret = get_errno(exit_group(arg1));
1940         break;
1941 #endif
1942     case TARGET_NR_setdomainname:
1943         ret = get_errno(setdomainname((const char *)arg1, arg2));
1944         break;
1945     case TARGET_NR_uname:
1946         /* no need to transcode because we use the linux syscall */
1947         ret = get_errno(sys_uname((struct new_utsname *)arg1));
1948         break;
1949 #ifdef TARGET_I386
1950     case TARGET_NR_modify_ldt:
1951         ret = get_errno(do_modify_ldt(cpu_env, arg1, (void *)arg2, arg3));
1952         break;
1953     case TARGET_NR_vm86old:
1954         goto unimplemented;
1955     case TARGET_NR_vm86:
1956         ret = do_vm86(cpu_env, arg1, (void *)arg2);
1957         break;
1958 #endif
1959     case TARGET_NR_adjtimex:
1960         goto unimplemented;
1961     case TARGET_NR_create_module:
1962     case TARGET_NR_init_module:
1963     case TARGET_NR_delete_module:
1964     case TARGET_NR_get_kernel_syms:
1965         goto unimplemented;
1966     case TARGET_NR_quotactl:
1967         goto unimplemented;
1968     case TARGET_NR_getpgid:
1969         ret = get_errno(getpgid(arg1));
1970         break;
1971     case TARGET_NR_fchdir:
1972         ret = get_errno(fchdir(arg1));
1973         break;
1974     case TARGET_NR_bdflush:
1975         goto unimplemented;
1976     case TARGET_NR_sysfs:
1977         goto unimplemented;
1978     case TARGET_NR_personality:
1979         ret = get_errno(personality(arg1));
1980         break;
1981     case TARGET_NR_afs_syscall:
1982         goto unimplemented;
1983     case TARGET_NR_setfsuid:
1984         ret = get_errno(setfsuid(arg1));
1985         break;
1986     case TARGET_NR_setfsgid:
1987         ret = get_errno(setfsgid(arg1));
1988         break;
1989     case TARGET_NR__llseek:
1990         {
1991             int64_t res;
1992             ret = get_errno(_llseek(arg1, arg2, arg3, &res, arg5));
1993             *(int64_t *)arg4 = tswap64(res);
1994         }
1995         break;
1996     case TARGET_NR_getdents:
1997 #if TARGET_LONG_SIZE != 4
1998 #error not supported
1999 #endif
2000         {
2001             struct dirent *dirp = (void *)arg2;
2002             long count = arg3;
2003
2004             ret = get_errno(sys_getdents(arg1, dirp, count));
2005             if (!is_error(ret)) {
2006                 struct dirent *de;
2007                 int len = ret;
2008                 int reclen;
2009                 de = dirp;
2010                 while (len > 0) {
2011                     reclen = de->d_reclen;
2012                     if (reclen > len)
2013                         break;
2014                     de->d_reclen = tswap16(reclen);
2015                     tswapls(&de->d_ino);
2016                     tswapls(&de->d_off);
2017                     de = (struct dirent *)((char *)de + reclen);
2018                     len -= reclen;
2019                 }
2020             }
2021         }
2022         break;
2023     case TARGET_NR_getdents64:
2024         {
2025             struct dirent64 *dirp = (void *)arg2;
2026             long count = arg3;
2027             ret = get_errno(sys_getdents64(arg1, dirp, count));
2028             if (!is_error(ret)) {
2029                 struct dirent64 *de;
2030                 int len = ret;
2031                 int reclen;
2032                 de = dirp;
2033                 while (len > 0) {
2034                     reclen = de->d_reclen;
2035                     if (reclen > len)
2036                         break;
2037                     de->d_reclen = tswap16(reclen);
2038                     tswap64s(&de->d_ino);
2039                     tswap64s(&de->d_off);
2040                     de = (struct dirent64 *)((char *)de + reclen);
2041                     len -= reclen;
2042                 }
2043             }
2044         }
2045         break;
2046     case TARGET_NR__newselect:
2047         ret = do_select(arg1, (void *)arg2, (void *)arg3, (void *)arg4,
2048                         (void *)arg5);
2049         break;
2050     case TARGET_NR_poll:
2051         {
2052             struct target_pollfd *target_pfd = (void *)arg1;
2053             unsigned int nfds = arg2;
2054             int timeout = arg3;
2055             struct pollfd *pfd;
2056             unsigned int i;
2057
2058             pfd = alloca(sizeof(struct pollfd) * nfds);
2059             for(i = 0; i < nfds; i++) {
2060                 pfd[i].fd = tswap32(target_pfd[i].fd);
2061                 pfd[i].events = tswap16(target_pfd[i].events);
2062             }
2063             ret = get_errno(poll(pfd, nfds, timeout));
2064             if (!is_error(ret)) {
2065                 for(i = 0; i < nfds; i++) {
2066                     target_pfd[i].revents = tswap16(pfd[i].revents);
2067                 }
2068             }
2069         }
2070         break;
2071     case TARGET_NR_flock:
2072         /* NOTE: the flock constant seems to be the same for every
2073            Linux platform */
2074         ret = get_errno(flock(arg1, arg2));
2075         break;
2076     case TARGET_NR_readv:
2077         {
2078             int count = arg3;
2079             int i;
2080             struct iovec *vec;
2081             struct target_iovec *target_vec = (void *)arg2;
2082
2083             vec = alloca(count * sizeof(struct iovec));
2084             for(i = 0;i < count; i++) {
2085                 vec[i].iov_base = (void *)tswapl(target_vec[i].iov_base);
2086                 vec[i].iov_len = tswapl(target_vec[i].iov_len);
2087             }
2088             ret = get_errno(readv(arg1, vec, count));
2089         }
2090         break;
2091     case TARGET_NR_writev:
2092         {
2093             int count = arg3;
2094             int i;
2095             struct iovec *vec;
2096             struct target_iovec *target_vec = (void *)arg2;
2097
2098             vec = alloca(count * sizeof(struct iovec));
2099             for(i = 0;i < count; i++) {
2100                 vec[i].iov_base = (void *)tswapl(target_vec[i].iov_base);
2101                 vec[i].iov_len = tswapl(target_vec[i].iov_len);
2102             }
2103             ret = get_errno(writev(arg1, vec, count));
2104         }
2105         break;
2106     case TARGET_NR_getsid:
2107         ret = get_errno(getsid(arg1));
2108         break;
2109     case TARGET_NR_fdatasync:
2110         ret = get_errno(fdatasync(arg1));
2111         break;
2112     case TARGET_NR__sysctl:
2113         goto unimplemented;
2114     case TARGET_NR_sched_setparam:
2115         {
2116             struct sched_param *target_schp = (void *)arg2;
2117             struct sched_param schp;
2118             schp.sched_priority = tswap32(target_schp->sched_priority);
2119             ret = get_errno(sched_setparam(arg1, &schp));
2120         }
2121         break;
2122     case TARGET_NR_sched_getparam:
2123         {
2124             struct sched_param *target_schp = (void *)arg2;
2125             struct sched_param schp;
2126             ret = get_errno(sched_getparam(arg1, &schp));
2127             if (!is_error(ret)) {
2128                 target_schp->sched_priority = tswap32(schp.sched_priority);
2129             }
2130         }
2131         break;
2132     case TARGET_NR_sched_setscheduler:
2133         {
2134             struct sched_param *target_schp = (void *)arg3;
2135             struct sched_param schp;
2136             schp.sched_priority = tswap32(target_schp->sched_priority);
2137             ret = get_errno(sched_setscheduler(arg1, arg2, &schp));
2138         }
2139         break;
2140     case TARGET_NR_sched_getscheduler:
2141         ret = get_errno(sched_getscheduler(arg1));
2142         break;
2143     case TARGET_NR_sched_yield:
2144         ret = get_errno(sched_yield());
2145         break;
2146     case TARGET_NR_sched_get_priority_max:
2147         ret = get_errno(sched_get_priority_max(arg1));
2148         break;
2149     case TARGET_NR_sched_get_priority_min:
2150         ret = get_errno(sched_get_priority_min(arg1));
2151         break;
2152     case TARGET_NR_sched_rr_get_interval:
2153         {
2154             struct target_timespec *target_ts = (void *)arg2;
2155             struct timespec ts;
2156             ret = get_errno(sched_rr_get_interval(arg1, &ts));
2157             if (!is_error(ret)) {
2158                 target_ts->tv_sec = tswapl(ts.tv_sec);
2159                 target_ts->tv_nsec = tswapl(ts.tv_nsec);
2160             }
2161         }
2162         break;
2163     case TARGET_NR_nanosleep:
2164         {
2165             struct target_timespec *target_req = (void *)arg1;
2166             struct target_timespec *target_rem = (void *)arg2;
2167             struct timespec req, rem;
2168             req.tv_sec = tswapl(target_req->tv_sec);
2169             req.tv_nsec = tswapl(target_req->tv_nsec);
2170             ret = get_errno(nanosleep(&req, &rem));
2171             if (target_rem) {
2172                 target_rem->tv_sec = tswapl(rem.tv_sec);
2173                 target_rem->tv_nsec = tswapl(rem.tv_nsec);
2174             }
2175         }
2176         break;
2177     case TARGET_NR_setresuid:
2178         ret = get_errno(setresuid(low2highuid(arg1),
2179                                   low2highuid(arg2),
2180                                   low2highuid(arg3)));
2181         break;
2182     case TARGET_NR_getresuid:
2183         {
2184             int ruid, euid, suid;
2185             ret = get_errno(getresuid(&ruid, &euid, &suid));
2186             if (!is_error(ret)) {
2187                 *(uint16_t *)arg1 = tswap16(high2lowuid(ruid));
2188                 *(uint16_t *)arg2 = tswap16(high2lowuid(euid));
2189                 *(uint16_t *)arg3 = tswap16(high2lowuid(suid));
2190             }
2191         }
2192         break;
2193     case TARGET_NR_setresgid:
2194         ret = get_errno(setresgid(low2highgid(arg1),
2195                                   low2highgid(arg2),
2196                                   low2highgid(arg3)));
2197         break;
2198     case TARGET_NR_getresgid:
2199         {
2200             int rgid, egid, sgid;
2201             ret = get_errno(getresgid(&rgid, &egid, &sgid));
2202             if (!is_error(ret)) {
2203                 *(uint16_t *)arg1 = high2lowgid(tswap16(rgid));
2204                 *(uint16_t *)arg2 = high2lowgid(tswap16(egid));
2205                 *(uint16_t *)arg3 = high2lowgid(tswap16(sgid));
2206             }
2207         }
2208         break;
2209     case TARGET_NR_query_module:
2210         goto unimplemented;
2211     case TARGET_NR_nfsservctl:
2212         goto unimplemented;
2213     case TARGET_NR_prctl:
2214         goto unimplemented;
2215     case TARGET_NR_pread:
2216         goto unimplemented;
2217     case TARGET_NR_pwrite:
2218         goto unimplemented;
2219     case TARGET_NR_chown:
2220         ret = get_errno(chown((const char *)arg1, arg2, arg3));
2221         break;
2222     case TARGET_NR_getcwd:
2223         ret = get_errno(sys_getcwd1((char *)arg1, arg2));
2224         break;
2225     case TARGET_NR_capget:
2226         goto unimplemented;
2227     case TARGET_NR_capset:
2228         goto unimplemented;
2229     case TARGET_NR_sigaltstack:
2230         goto unimplemented;
2231     case TARGET_NR_sendfile:
2232         goto unimplemented;
2233     case TARGET_NR_getpmsg:
2234         goto unimplemented;
2235     case TARGET_NR_putpmsg:
2236         goto unimplemented;
2237     case TARGET_NR_vfork:
2238         ret = get_errno(do_fork(cpu_env, CLONE_VFORK | CLONE_VM | SIGCHLD, 0));
2239         break;
2240     case TARGET_NR_ugetrlimit:
2241         goto unimplemented;
2242     case TARGET_NR_truncate64:
2243         goto unimplemented;
2244     case TARGET_NR_ftruncate64:
2245         goto unimplemented;
2246     case TARGET_NR_stat64:
2247         ret = get_errno(stat(path((const char *)arg1), &st));
2248         goto do_stat64;
2249     case TARGET_NR_lstat64:
2250         ret = get_errno(lstat(path((const char *)arg1), &st));
2251         goto do_stat64;
2252     case TARGET_NR_fstat64:
2253         {
2254             ret = get_errno(fstat(arg1, &st));
2255         do_stat64:
2256             if (!is_error(ret)) {
2257                 struct target_stat64 *target_st = (void *)arg2;
2258                 memset(target_st, 0, sizeof(struct target_stat64));
2259                 target_st->st_dev = tswap16(st.st_dev);
2260                 target_st->st_ino = tswapl(st.st_ino);
2261 #ifdef TARGET_STAT64_HAS_BROKEN_ST_INO
2262                 target_st->__st_ino = tswapl(st.st_ino);
2263 #endif
2264                 target_st->st_mode = tswap32(st.st_mode);
2265                 target_st->st_nlink = tswap32(st.st_nlink);
2266                 target_st->st_uid = tswapl(st.st_uid);
2267                 target_st->st_gid = tswapl(st.st_gid);
2268                 target_st->st_rdev = tswap16(st.st_rdev);
2269                 /* XXX: better use of kernel struct */
2270                 target_st->st_size = tswap64(st.st_size);
2271                 target_st->st_blksize = tswapl(st.st_blksize);
2272                 target_st->st_blocks = tswapl(st.st_blocks);
2273                 target_st->target_st_atime = tswapl(st.st_atime);
2274                 target_st->target_st_mtime = tswapl(st.st_mtime);
2275                 target_st->target_st_ctime = tswapl(st.st_ctime);
2276             }
2277         }
2278         break;
2279
2280     case TARGET_NR_lchown32:
2281         ret = get_errno(lchown((const char *)arg1, arg2, arg3));
2282         break;
2283     case TARGET_NR_getuid32:
2284         ret = get_errno(getuid());
2285         break;
2286     case TARGET_NR_getgid32:
2287         ret = get_errno(getgid());
2288         break;
2289     case TARGET_NR_geteuid32:
2290         ret = get_errno(geteuid());
2291         break;
2292     case TARGET_NR_getegid32:
2293         ret = get_errno(getegid());
2294         break;
2295     case TARGET_NR_setreuid32:
2296         ret = get_errno(setreuid(arg1, arg2));
2297         break;
2298     case TARGET_NR_setregid32:
2299         ret = get_errno(setregid(arg1, arg2));
2300         break;
2301     case TARGET_NR_getgroups32:
2302         goto unimplemented;
2303     case TARGET_NR_setgroups32:
2304         goto unimplemented;
2305     case TARGET_NR_fchown32:
2306         ret = get_errno(fchown(arg1, arg2, arg3));
2307         break;
2308     case TARGET_NR_setresuid32:
2309         ret = get_errno(setresuid(arg1, arg2, arg3));
2310         break;
2311     case TARGET_NR_getresuid32:
2312         {
2313             int ruid, euid, suid;
2314             ret = get_errno(getresuid(&ruid, &euid, &suid));
2315             if (!is_error(ret)) {
2316                 *(uint32_t *)arg1 = tswap32(ruid);
2317                 *(uint32_t *)arg2 = tswap32(euid);
2318                 *(uint32_t *)arg3 = tswap32(suid);
2319             }
2320         }
2321         break;
2322     case TARGET_NR_setresgid32:
2323         ret = get_errno(setresgid(arg1, arg2, arg3));
2324         break;
2325     case TARGET_NR_getresgid32:
2326         {
2327             int rgid, egid, sgid;
2328             ret = get_errno(getresgid(&rgid, &egid, &sgid));
2329             if (!is_error(ret)) {
2330                 *(uint32_t *)arg1 = tswap32(rgid);
2331                 *(uint32_t *)arg2 = tswap32(egid);
2332                 *(uint32_t *)arg3 = tswap32(sgid);
2333             }
2334         }
2335         break;
2336     case TARGET_NR_chown32:
2337         ret = get_errno(chown((const char *)arg1, arg2, arg3));
2338         break;
2339     case TARGET_NR_setuid32:
2340         ret = get_errno(setuid(arg1));
2341         break;
2342     case TARGET_NR_setgid32:
2343         ret = get_errno(setgid(arg1));
2344         break;
2345     case TARGET_NR_setfsuid32:
2346         ret = get_errno(setfsuid(arg1));
2347         break;
2348     case TARGET_NR_setfsgid32:
2349         ret = get_errno(setfsgid(arg1));
2350         break;
2351     case TARGET_NR_pivot_root:
2352         goto unimplemented;
2353     case TARGET_NR_mincore:
2354         goto unimplemented;
2355     case TARGET_NR_madvise:
2356         goto unimplemented;
2357 #if TARGET_LONG_BITS == 32
2358     case TARGET_NR_fcntl64:
2359         switch(arg2) {
2360         case F_GETLK64:
2361         case F_SETLK64:
2362         case F_SETLKW64:
2363             goto unimplemented;
2364         default:
2365             ret = get_errno(fcntl(arg1, arg2, arg3));
2366             break;
2367         }
2368         break;
2369 #endif
2370     case TARGET_NR_security:
2371         goto unimplemented;
2372     case TARGET_NR_gettid:
2373         ret = get_errno(gettid());
2374         break;
2375     case TARGET_NR_readahead:
2376         goto unimplemented;
2377     case TARGET_NR_setxattr:
2378     case TARGET_NR_lsetxattr:
2379     case TARGET_NR_fsetxattr:
2380     case TARGET_NR_getxattr:
2381     case TARGET_NR_lgetxattr:
2382     case TARGET_NR_fgetxattr:
2383     case TARGET_NR_listxattr:
2384     case TARGET_NR_llistxattr:
2385     case TARGET_NR_flistxattr:
2386     case TARGET_NR_removexattr:
2387     case TARGET_NR_lremovexattr:
2388     case TARGET_NR_fremovexattr:
2389         goto unimplemented_nowarn;
2390     case TARGET_NR_set_thread_area:
2391     case TARGET_NR_get_thread_area:
2392         goto unimplemented_nowarn;
2393     default:
2394     unimplemented:
2395         gemu_log("qemu: Unsupported syscall: %d\n", num);
2396     unimplemented_nowarn:
2397         ret = -ENOSYS;
2398         break;
2399     }
2400  fail:
2401     return ret;
2402 }
2403