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