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 #include <linux/kd.h>
  62
  63 #include "qemu.h"
  64
  65 //#define DEBUG
  66
  67 //#include <linux/msdos_fs.h>
  68 #define VFAT_IOCTL_READDIR_BOTH         _IOR('r', 1, struct dirent [2])
  69 #define VFAT_IOCTL_READDIR_SHORT        _IOR('r', 2, struct dirent [2])
  70
  71 void host_to_target_siginfo(target_siginfo_t *tinfo, const siginfo_t *info);
  72 void target_to_host_siginfo(siginfo_t *info, const target_siginfo_t *tinfo);
  73 long do_sigreturn(CPUX86State *env);
  74 long do_rt_sigreturn(CPUX86State *env);
  75
  76 #define __NR_sys_uname __NR_uname
  77 #define __NR_sys_getcwd1 __NR_getcwd
  78 #define __NR_sys_statfs __NR_statfs
  79 #define __NR_sys_fstatfs __NR_fstatfs
  80 #define __NR_sys_getdents __NR_getdents
  81 #define __NR_sys_getdents64 __NR_getdents64
  82 #define __NR_sys_rt_sigqueueinfo __NR_rt_sigqueueinfo
  83
  84 #if defined(__alpha__) || defined (__ia64__)
  85 #define __NR__llseek __NR_lseek
  86 #endif
  87
  88 #ifdef __NR_gettid
  89 _syscall0(int, gettid)
  90 #else
  91 static int gettid(void) {
  92     return -ENOSYS;
  93 }
  94 #endif
  95 _syscall1(int,sys_uname,struct new_utsname *,buf)
  96 _syscall2(int,sys_getcwd1,char *,buf,size_t,size)
  97 _syscall3(int, sys_getdents, uint, fd, struct dirent *, dirp, uint, count);
  98 _syscall3(int, sys_getdents64, uint, fd, struct dirent64 *, dirp, uint, count);
  99 _syscall5(int, _llseek,  uint,  fd, ulong, hi, ulong, lo,
 100           loff_t *, res, uint, wh);
 101 _syscall2(int,sys_statfs,const char *,path,struct kernel_statfs *,buf)
 102 _syscall2(int,sys_fstatfs,int,fd,struct kernel_statfs *,buf)
 103 _syscall3(int,sys_rt_sigqueueinfo,int,pid,int,sig,siginfo_t *,uinfo)
 104 #ifdef __NR_exit_group
 105 _syscall1(int,exit_group,int,error_code)
 106 #endif
 107
 108 extern int personality(int);
 109 extern int flock(int, int);
 110 extern int setfsuid(int);
 111 extern int setfsgid(int);
 112 extern int setresuid(uid_t, uid_t, uid_t);
 113 extern int getresuid(uid_t *, uid_t *, uid_t *);
 114 extern int setresgid(gid_t, gid_t, gid_t);
 115 extern int getresgid(gid_t *, gid_t *, gid_t *);
 116 extern int setgroups(int, 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 *)HOST_PAGE_ALIGN((unsigned long)target_brk);
 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 = HOST_PAGE_ALIGN(new_brk - brk_page + 1);
 161     mapped_addr = get_errno(target_mmap((unsigned long)brk_page, new_alloc_size,
 162                                         PROT_READ|PROT_WRITE,
 163                                         MAP_ANON|MAP_FIXED|MAP_PRIVATE, 0, 0));
 164     if (is_error(mapped_addr)) {
 165         return mapped_addr;
 166     } else {
 167         target_brk = new_brk;
 168         return (long)target_brk;
 169     }
 170 }
 171
 172 static inline fd_set *target_to_host_fds(fd_set *fds,
 173                                          target_long *target_fds, int n)
 174 {
 175 #if !defined(BSWAP_NEEDED) && !defined(WORDS_BIGENDIAN)
 176     return (fd_set *)target_fds;
 177 #else
 178     int i, b;
 179     if (target_fds) {
 180         FD_ZERO(fds);
 181         for(i = 0;i < n; i++) {
 182             b = (tswapl(target_fds[i / TARGET_LONG_BITS]) >>
 183                  (i & (TARGET_LONG_BITS - 1))) & 1;
 184             if (b)
 185                 FD_SET(i, fds);
 186         }
 187         return fds;
 188     } else {
 189         return NULL;
 190     }
 191 #endif
 192 }
 193
 194 static inline void host_to_target_fds(target_long *target_fds,
 195                                       fd_set *fds, int n)
 196 {
 197 #if !defined(BSWAP_NEEDED) && !defined(WORDS_BIGENDIAN)
 198     /* nothing to do */
 199 #else
 200     int i, nw, j, k;
 201     target_long v;
 202
 203     if (target_fds) {
 204         nw = n / TARGET_LONG_BITS;
 205         k = 0;
 206         for(i = 0;i < nw; i++) {
 207             v = 0;
 208             for(j = 0; j < TARGET_LONG_BITS; j++) {
 209                 v |= ((FD_ISSET(k, fds) != 0) << j);
 210                 k++;
 211             }
 212             target_fds[i] = tswapl(v);
 213         }
 214     }
 215 #endif
 216 }
 217
 218 static inline void host_to_target_rusage(struct target_rusage *target_rusage,
 219                                          const struct rusage *rusage)
 220 {
 221     target_rusage->ru_utime.tv_sec = tswapl(rusage->ru_utime.tv_sec);
 222     target_rusage->ru_utime.tv_usec = tswapl(rusage->ru_utime.tv_usec);
 223     target_rusage->ru_stime.tv_sec = tswapl(rusage->ru_stime.tv_sec);
 224     target_rusage->ru_stime.tv_usec = tswapl(rusage->ru_stime.tv_usec);
 225     target_rusage->ru_maxrss = tswapl(rusage->ru_maxrss);
 226     target_rusage->ru_ixrss = tswapl(rusage->ru_ixrss);
 227     target_rusage->ru_idrss = tswapl(rusage->ru_idrss);
 228     target_rusage->ru_isrss = tswapl(rusage->ru_isrss);
 229     target_rusage->ru_minflt = tswapl(rusage->ru_minflt);
 230     target_rusage->ru_majflt = tswapl(rusage->ru_majflt);
 231     target_rusage->ru_nswap = tswapl(rusage->ru_nswap);
 232     target_rusage->ru_inblock = tswapl(rusage->ru_inblock);
 233     target_rusage->ru_oublock = tswapl(rusage->ru_oublock);
 234     target_rusage->ru_msgsnd = tswapl(rusage->ru_msgsnd);
 235     target_rusage->ru_msgrcv = tswapl(rusage->ru_msgrcv);
 236     target_rusage->ru_nsignals = tswapl(rusage->ru_nsignals);
 237     target_rusage->ru_nvcsw = tswapl(rusage->ru_nvcsw);
 238     target_rusage->ru_nivcsw = tswapl(rusage->ru_nivcsw);
 239 }
 240
 241 static inline void target_to_host_timeval(struct timeval *tv,
 242                                           const struct target_timeval *target_tv)
 243 {
 244     tv->tv_sec = tswapl(target_tv->tv_sec);
 245     tv->tv_usec = tswapl(target_tv->tv_usec);
 246 }
 247
 248 static inline void host_to_target_timeval(struct target_timeval *target_tv,
 249                                           const struct timeval *tv)
 250 {
 251     target_tv->tv_sec = tswapl(tv->tv_sec);
 252     target_tv->tv_usec = tswapl(tv->tv_usec);
 253 }
 254
 255
 256 static long do_select(long n,
 257                       target_long *target_rfds, target_long *target_wfds,
 258                       target_long *target_efds, struct target_timeval *target_tv)
 259 {
 260     fd_set rfds, wfds, efds;
 261     fd_set *rfds_ptr, *wfds_ptr, *efds_ptr;
 262     struct timeval tv, *tv_ptr;
 263     long ret;
 264
 265     rfds_ptr = target_to_host_fds(&rfds, target_rfds, n);
 266     wfds_ptr = target_to_host_fds(&wfds, target_wfds, n);
 267     efds_ptr = target_to_host_fds(&efds, target_efds, n);
 268
 269     if (target_tv) {
 270         target_to_host_timeval(&tv, target_tv);
 271         tv_ptr = &tv;
 272     } else {
 273         tv_ptr = NULL;
 274     }
 275     ret = get_errno(select(n, rfds_ptr, wfds_ptr, efds_ptr, tv_ptr));
 276     if (!is_error(ret)) {
 277         host_to_target_fds(target_rfds, rfds_ptr, n);
 278         host_to_target_fds(target_wfds, wfds_ptr, n);
 279         host_to_target_fds(target_efds, efds_ptr, n);
 280
 281         if (target_tv) {
 282             host_to_target_timeval(target_tv, &tv);
 283         }
 284     }
 285     return ret;
 286 }
 287
 288 static inline void target_to_host_sockaddr(struct sockaddr *addr,
 289                                            struct target_sockaddr *target_addr,
 290                                            socklen_t len)
 291 {
 292     memcpy(addr, target_addr, len);
 293     addr->sa_family = tswap16(target_addr->sa_family);
 294 }
 295
 296 static inline void host_to_target_sockaddr(struct target_sockaddr *target_addr,
 297                                            struct sockaddr *addr,
 298                                            socklen_t len)
 299 {
 300     memcpy(target_addr, addr, len);
 301     target_addr->sa_family = tswap16(addr->sa_family);
 302 }
 303
 304 static inline void target_to_host_cmsg(struct msghdr *msgh,
 305                                        struct target_msghdr *target_msgh)
 306 {
 307     struct cmsghdr *cmsg = CMSG_FIRSTHDR(msgh);
 308     struct target_cmsghdr *target_cmsg = TARGET_CMSG_FIRSTHDR(target_msgh);
 309     socklen_t space = 0;
 310
 311     while (cmsg && target_cmsg) {
 312         void *data = CMSG_DATA(cmsg);
 313         void *target_data = TARGET_CMSG_DATA(target_cmsg);
 314
 315         int len = tswapl(target_cmsg->cmsg_len)
 316                   - TARGET_CMSG_ALIGN(sizeof (struct target_cmsghdr));
 317
 318         space += CMSG_SPACE(len);
 319         if (space > msgh->msg_controllen) {
 320             space -= CMSG_SPACE(len);
 321             gemu_log("Host cmsg overflow");
 322             break;
 323         }
 324
 325         cmsg->cmsg_level = tswap32(target_cmsg->cmsg_level);
 326         cmsg->cmsg_type = tswap32(target_cmsg->cmsg_type);
 327         cmsg->cmsg_len = CMSG_LEN(len);
 328
 329         if (cmsg->cmsg_level != SOL_SOCKET || cmsg->cmsg_type != SCM_RIGHTS) {
 330             gemu_log("Unsupported ancillary data: %d/%d\n", cmsg->cmsg_level, cmsg->cmsg_type);
 331             memcpy(data, target_data, len);
 332         } else {
 333             int *fd = (int *)data;
 334             int *target_fd = (int *)target_data;
 335             int i, numfds = len / sizeof(int);
 336
 337             for (i = 0; i < numfds; i++)
 338                 fd[i] = tswap32(target_fd[i]);
 339         }
 340
 341         cmsg = CMSG_NXTHDR(msgh, cmsg);
 342         target_cmsg = TARGET_CMSG_NXTHDR(target_msgh, target_cmsg);
 343     }
 344
 345     msgh->msg_controllen = space;
 346 }
 347
 348 static inline void host_to_target_cmsg(struct target_msghdr *target_msgh,
 349                                        struct msghdr *msgh)
 350 {
 351     struct cmsghdr *cmsg = CMSG_FIRSTHDR(msgh);
 352     struct target_cmsghdr *target_cmsg = TARGET_CMSG_FIRSTHDR(target_msgh);
 353     socklen_t space = 0;
 354
 355     while (cmsg && target_cmsg) {
 356         void *data = CMSG_DATA(cmsg);
 357         void *target_data = TARGET_CMSG_DATA(target_cmsg);
 358
 359         int len = cmsg->cmsg_len - CMSG_ALIGN(sizeof (struct cmsghdr));
 360
 361         space += TARGET_CMSG_SPACE(len);
 362         if (space > tswapl(target_msgh->msg_controllen)) {
 363             space -= TARGET_CMSG_SPACE(len);
 364             gemu_log("Target cmsg overflow");
 365             break;
 366         }
 367
 368         target_cmsg->cmsg_level = tswap32(cmsg->cmsg_level);
 369         target_cmsg->cmsg_type = tswap32(cmsg->cmsg_type);
 370         target_cmsg->cmsg_len = tswapl(TARGET_CMSG_LEN(len));
 371
 372         if (cmsg->cmsg_level != SOL_SOCKET || cmsg->cmsg_type != SCM_RIGHTS) {
 373             gemu_log("Unsupported ancillary data: %d/%d\n", cmsg->cmsg_level, cmsg->cmsg_type);
 374             memcpy(target_data, data, len);
 375         } else {
 376             int *fd = (int *)data;
 377             int *target_fd = (int *)target_data;
 378             int i, numfds = len / sizeof(int);
 379
 380             for (i = 0; i < numfds; i++)
 381                 target_fd[i] = tswap32(fd[i]);
 382         }
 383
 384         cmsg = CMSG_NXTHDR(msgh, cmsg);
 385         target_cmsg = TARGET_CMSG_NXTHDR(target_msgh, target_cmsg);
 386     }
 387
 388     msgh->msg_controllen = tswapl(space);
 389 }
 390
 391 static long do_setsockopt(int sockfd, int level, int optname,
 392                           void *optval, socklen_t optlen)
 393 {
 394     if (level == SOL_TCP) {
 395         /* TCP options all take an 'int' value.  */
 396         int val;
 397
 398         if (optlen < sizeof(uint32_t))
 399             return -EINVAL;
 400
 401         val = tswap32(*(uint32_t *)optval);
 402         return get_errno(setsockopt(sockfd, level, optname, &val, sizeof(val)));
 403     }
 404
 405     else if (level != SOL_SOCKET) {
 406         gemu_log("Unsupported setsockopt level: %d\n", level);
 407         return -ENOSYS;
 408     }
 409
 410     switch (optname) {
 411     /* Options with 'int' argument.  */
 412     case SO_DEBUG:
 413     case SO_REUSEADDR:
 414     case SO_TYPE:
 415     case SO_ERROR:
 416     case SO_DONTROUTE:
 417     case SO_BROADCAST:
 418     case SO_SNDBUF:
 419     case SO_RCVBUF:
 420     case SO_KEEPALIVE:
 421     case SO_OOBINLINE:
 422     case SO_NO_CHECK:
 423     case SO_PRIORITY:
 424     case SO_BSDCOMPAT:
 425     case SO_PASSCRED:
 426     case SO_TIMESTAMP:
 427     case SO_RCVLOWAT:
 428     case SO_RCVTIMEO:
 429     case SO_SNDTIMEO:
 430     {
 431         int val;
 432         if (optlen < sizeof(uint32_t))
 433             return -EINVAL;
 434         val = tswap32(*(uint32_t *)optval);
 435         return get_errno(setsockopt(sockfd, level, optname, &val, sizeof(val)));
 436     }
 437
 438     default:
 439         gemu_log("Unsupported setsockopt SOL_SOCKET option: %d\n", optname);
 440         return -ENOSYS;
 441     }
 442 }
 443
 444 static long do_getsockopt(int sockfd, int level, int optname,
 445                           void *optval, socklen_t *optlen)
 446 {
 447     gemu_log("getsockopt not yet supported\n");
 448     return -ENOSYS;
 449 }
 450
 451 static long do_socketcall(int num, int32_t *vptr)
 452 {
 453     long ret;
 454
 455     switch(num) {
 456     case SOCKOP_socket:
 457         {
 458             int domain = tswap32(vptr[0]);
 459             int type = tswap32(vptr[1]);
 460             int protocol = tswap32(vptr[2]);
 461
 462             ret = get_errno(socket(domain, type, protocol));
 463         }
 464         break;
 465     case SOCKOP_bind:
 466         {
 467             int sockfd = tswap32(vptr[0]);
 468             void *target_addr = (void *)tswap32(vptr[1]);
 469             socklen_t addrlen = tswap32(vptr[2]);
 470             void *addr = alloca(addrlen);
 471
 472             target_to_host_sockaddr(addr, target_addr, addrlen);
 473             ret = get_errno(bind(sockfd, addr, addrlen));
 474         }
 475         break;
 476     case SOCKOP_connect:
 477         {
 478             int sockfd = tswap32(vptr[0]);
 479             void *target_addr = (void *)tswap32(vptr[1]);
 480             socklen_t addrlen = tswap32(vptr[2]);
 481             void *addr = alloca(addrlen);
 482
 483             target_to_host_sockaddr(addr, target_addr, addrlen);
 484             ret = get_errno(connect(sockfd, addr, addrlen));
 485         }
 486         break;
 487     case SOCKOP_listen:
 488         {
 489             int sockfd = tswap32(vptr[0]);
 490             int backlog = tswap32(vptr[1]);
 491
 492             ret = get_errno(listen(sockfd, backlog));
 493         }
 494         break;
 495     case SOCKOP_accept:
 496         {
 497             int sockfd = tswap32(vptr[0]);
 498             void *target_addr = (void *)tswap32(vptr[1]);
 499             uint32_t *target_addrlen = (void *)tswap32(vptr[2]);
 500             socklen_t addrlen = tswap32(*target_addrlen);
 501             void *addr = alloca(addrlen);
 502
 503             ret = get_errno(accept(sockfd, addr, &addrlen));
 504             if (!is_error(ret)) {
 505                 host_to_target_sockaddr(target_addr, addr, addrlen);
 506                 *target_addrlen = tswap32(addrlen);
 507             }
 508         }
 509         break;
 510     case SOCKOP_getsockname:
 511         {
 512             int sockfd = tswap32(vptr[0]);
 513             void *target_addr = (void *)tswap32(vptr[1]);
 514             uint32_t *target_addrlen = (void *)tswap32(vptr[2]);
 515             socklen_t addrlen = tswap32(*target_addrlen);
 516             void *addr = alloca(addrlen);
 517
 518             ret = get_errno(getsockname(sockfd, addr, &addrlen));
 519             if (!is_error(ret)) {
 520                 host_to_target_sockaddr(target_addr, addr, addrlen);
 521                 *target_addrlen = tswap32(addrlen);
 522             }
 523         }
 524         break;
 525     case SOCKOP_getpeername:
 526         {
 527             int sockfd = tswap32(vptr[0]);
 528             void *target_addr = (void *)tswap32(vptr[1]);
 529             uint32_t *target_addrlen = (void *)tswap32(vptr[2]);
 530             socklen_t addrlen = tswap32(*target_addrlen);
 531             void *addr = alloca(addrlen);
 532
 533             ret = get_errno(getpeername(sockfd, addr, &addrlen));
 534             if (!is_error(ret)) {
 535                 host_to_target_sockaddr(target_addr, addr, addrlen);
 536                 *target_addrlen = tswap32(addrlen);
 537             }
 538         }
 539         break;
 540     case SOCKOP_socketpair:
 541         {
 542             int domain = tswap32(vptr[0]);
 543             int type = tswap32(vptr[1]);
 544             int protocol = tswap32(vptr[2]);
 545             int32_t *target_tab = (void *)tswap32(vptr[3]);
 546             int tab[2];
 547
 548             ret = get_errno(socketpair(domain, type, protocol, tab));
 549             if (!is_error(ret)) {
 550                 target_tab[0] = tswap32(tab[0]);
 551                 target_tab[1] = tswap32(tab[1]);
 552             }
 553         }
 554         break;
 555     case SOCKOP_send:
 556         {
 557             int sockfd = tswap32(vptr[0]);
 558             void *msg = (void *)tswap32(vptr[1]);
 559             size_t len = tswap32(vptr[2]);
 560             int flags = tswap32(vptr[3]);
 561
 562             ret = get_errno(send(sockfd, msg, len, flags));
 563         }
 564         break;
 565     case SOCKOP_recv:
 566         {
 567             int sockfd = tswap32(vptr[0]);
 568             void *msg = (void *)tswap32(vptr[1]);
 569             size_t len = tswap32(vptr[2]);
 570             int flags = tswap32(vptr[3]);
 571
 572             ret = get_errno(recv(sockfd, msg, len, flags));
 573         }
 574         break;
 575     case SOCKOP_sendto:
 576         {
 577             int sockfd = tswap32(vptr[0]);
 578             void *msg = (void *)tswap32(vptr[1]);
 579             size_t len = tswap32(vptr[2]);
 580             int flags = tswap32(vptr[3]);
 581             void *target_addr = (void *)tswap32(vptr[4]);
 582             socklen_t addrlen = tswap32(vptr[5]);
 583             void *addr = alloca(addrlen);
 584
 585             target_to_host_sockaddr(addr, target_addr, addrlen);
 586             ret = get_errno(sendto(sockfd, msg, len, flags, addr, addrlen));
 587         }
 588         break;
 589     case SOCKOP_recvfrom:
 590         {
 591             int sockfd = tswap32(vptr[0]);
 592             void *msg = (void *)tswap32(vptr[1]);
 593             size_t len = tswap32(vptr[2]);
 594             int flags = tswap32(vptr[3]);
 595             void *target_addr = (void *)tswap32(vptr[4]);
 596             uint32_t *target_addrlen = (void *)tswap32(vptr[5]);
 597             socklen_t addrlen = tswap32(*target_addrlen);
 598             void *addr = alloca(addrlen);
 599
 600             ret = get_errno(recvfrom(sockfd, msg, len, flags, addr, &addrlen));
 601             if (!is_error(ret)) {
 602                 host_to_target_sockaddr(target_addr, addr, addrlen);
 603                 *target_addrlen = tswap32(addrlen);
 604             }
 605         }
 606         break;
 607     case SOCKOP_shutdown:
 608         {
 609             int sockfd = tswap32(vptr[0]);
 610             int how = tswap32(vptr[1]);
 611
 612             ret = get_errno(shutdown(sockfd, how));
 613         }
 614         break;
 615     case SOCKOP_sendmsg:
 616     case SOCKOP_recvmsg:
 617         {
 618             int fd;
 619             struct target_msghdr *msgp;
 620             struct msghdr msg;
 621             int flags, count, i;
 622             struct iovec *vec;
 623             struct target_iovec *target_vec;
 624
 625             msgp = (void *)tswap32(vptr[1]);
 626             msg.msg_name = (void *)tswapl(msgp->msg_name);
 627             msg.msg_namelen = tswapl(msgp->msg_namelen);
 628             msg.msg_controllen = 2 * tswapl(msgp->msg_controllen);
 629             msg.msg_control = alloca(msg.msg_controllen);
 630             msg.msg_flags = tswap32(msgp->msg_flags);
 631
 632             count = tswapl(msgp->msg_iovlen);
 633             vec = alloca(count * sizeof(struct iovec));
 634             target_vec = (void *)tswapl(msgp->msg_iov);
 635             for(i = 0;i < count; i++) {
 636                 vec[i].iov_base = (void *)tswapl(target_vec[i].iov_base);
 637                 vec[i].iov_len = tswapl(target_vec[i].iov_len);
 638             }
 639             msg.msg_iovlen = count;
 640             msg.msg_iov = vec;
 641
 642             fd = tswap32(vptr[0]);
 643             flags = tswap32(vptr[2]);
 644             if (num == SOCKOP_sendmsg) {
 645                 target_to_host_cmsg(&msg, msgp);
 646                 ret = get_errno(sendmsg(fd, &msg, flags));
 647             } else {
 648                 ret = get_errno(recvmsg(fd, &msg, flags));
 649                 if (!is_error(ret))
 650                   host_to_target_cmsg(msgp, &msg);
 651             }
 652         }
 653         break;
 654     case SOCKOP_setsockopt:
 655         {
 656             int sockfd = tswap32(vptr[0]);
 657             int level = tswap32(vptr[1]);
 658             int optname = tswap32(vptr[2]);
 659             void *optval = (void *)tswap32(vptr[3]);
 660             socklen_t optlen = tswap32(vptr[4]);
 661
 662             ret = do_setsockopt(sockfd, level, optname, optval, optlen);
 663         }
 664         break;
 665     case SOCKOP_getsockopt:
 666         {
 667             int sockfd = tswap32(vptr[0]);
 668             int level = tswap32(vptr[1]);
 669             int optname = tswap32(vptr[2]);
 670             void *optval = (void *)tswap32(vptr[3]);
 671             uint32_t *target_len = (void *)tswap32(vptr[4]);
 672             socklen_t optlen = tswap32(*target_len);
 673
 674             ret = do_getsockopt(sockfd, level, optname, optval, &optlen);
 675             if (!is_error(ret))
 676                 *target_len = tswap32(optlen);
 677         }
 678         break;
 679     default:
 680         gemu_log("Unsupported socketcall: %d\n", num);
 681         ret = -ENOSYS;
 682         break;
 683     }
 684     return ret;
 685 }
 686
 687 /* kernel structure types definitions */
 688 #define IFNAMSIZ        16
 689
 690 #define STRUCT(name, list...) STRUCT_ ## name,
 691 #define STRUCT_SPECIAL(name) STRUCT_ ## name,
 692 enum {
 693 #include "syscall_types.h"
 694 };
 695 #undef STRUCT
 696 #undef STRUCT_SPECIAL
 697
 698 #define STRUCT(name, list...) const argtype struct_ ## name ## _def[] = { list, TYPE_NULL };
 699 #define STRUCT_SPECIAL(name)
 700 #include "syscall_types.h"
 701 #undef STRUCT
 702 #undef STRUCT_SPECIAL
 703
 704 typedef struct IOCTLEntry {
 705     int target_cmd;
 706     int host_cmd;
 707     const char *name;
 708     int access;
 709     const argtype arg_type[5];
 710 } IOCTLEntry;
 711
 712 #define IOC_R 0x0001
 713 #define IOC_W 0x0002
 714 #define IOC_RW (IOC_R | IOC_W)
 715
 716 #define MAX_STRUCT_SIZE 4096
 717
 718 const IOCTLEntry ioctl_entries[] = {
 719 #define IOCTL(cmd, access, types...) \
 720     { TARGET_ ## cmd, cmd, #cmd, access, { types } },
 721 #include "ioctls.h"
 722     { 0, 0, },
 723 };
 724
 725 static long do_ioctl(long fd, long cmd, long arg)
 726 {
 727     const IOCTLEntry *ie;
 728     const argtype *arg_type;
 729     long ret;
 730     uint8_t buf_temp[MAX_STRUCT_SIZE];
 731
 732     ie = ioctl_entries;
 733     for(;;) {
 734         if (ie->target_cmd == 0) {
 735             gemu_log("Unsupported ioctl: cmd=0x%04lx\n", cmd);
 736             return -ENOSYS;
 737         }
 738         if (ie->target_cmd == cmd)
 739             break;
 740         ie++;
 741     }
 742     arg_type = ie->arg_type;
 743 #if defined(DEBUG)
 744     gemu_log("ioctl: cmd=0x%04lx (%s)\n", cmd, ie->name);
 745 #endif
 746     switch(arg_type[0]) {
 747     case TYPE_NULL:
 748         /* no argument */
 749         ret = get_errno(ioctl(fd, ie->host_cmd));
 750         break;
 751     case TYPE_PTRVOID:
 752     case TYPE_INT:
 753         /* int argment */
 754         ret = get_errno(ioctl(fd, ie->host_cmd, arg));
 755         break;
 756     case TYPE_PTR:
 757         arg_type++;
 758         switch(ie->access) {
 759         case IOC_R:
 760             ret = get_errno(ioctl(fd, ie->host_cmd, buf_temp));
 761             if (!is_error(ret)) {
 762                 thunk_convert((void *)arg, buf_temp, arg_type, THUNK_TARGET);
 763             }
 764             break;
 765         case IOC_W:
 766             thunk_convert(buf_temp, (void *)arg, arg_type, THUNK_HOST);
 767             ret = get_errno(ioctl(fd, ie->host_cmd, buf_temp));
 768             break;
 769         default:
 770         case IOC_RW:
 771             thunk_convert(buf_temp, (void *)arg, arg_type, THUNK_HOST);
 772             ret = get_errno(ioctl(fd, ie->host_cmd, buf_temp));
 773             if (!is_error(ret)) {
 774                 thunk_convert((void *)arg, buf_temp, arg_type, THUNK_TARGET);
 775             }
 776             break;
 777         }
 778         break;
 779     default:
 780         gemu_log("Unsupported ioctl type: cmd=0x%04lx type=%d\n", cmd, arg_type[0]);
 781         ret = -ENOSYS;
 782         break;
 783     }
 784     return ret;
 785 }
 786
 787 bitmask_transtbl iflag_tbl[] = {
 788         { TARGET_IGNBRK, TARGET_IGNBRK, IGNBRK, IGNBRK },
 789         { TARGET_BRKINT, TARGET_BRKINT, BRKINT, BRKINT },
 790         { TARGET_IGNPAR, TARGET_IGNPAR, IGNPAR, IGNPAR },
 791         { TARGET_PARMRK, TARGET_PARMRK, PARMRK, PARMRK },
 792         { TARGET_INPCK, TARGET_INPCK, INPCK, INPCK },
 793         { TARGET_ISTRIP, TARGET_ISTRIP, ISTRIP, ISTRIP },
 794         { TARGET_INLCR, TARGET_INLCR, INLCR, INLCR },
 795         { TARGET_IGNCR, TARGET_IGNCR, IGNCR, IGNCR },
 796         { TARGET_ICRNL, TARGET_ICRNL, ICRNL, ICRNL },
 797         { TARGET_IUCLC, TARGET_IUCLC, IUCLC, IUCLC },
 798         { TARGET_IXON, TARGET_IXON, IXON, IXON },
 799         { TARGET_IXANY, TARGET_IXANY, IXANY, IXANY },
 800         { TARGET_IXOFF, TARGET_IXOFF, IXOFF, IXOFF },
 801         { TARGET_IMAXBEL, TARGET_IMAXBEL, IMAXBEL, IMAXBEL },
 802         { 0, 0, 0, 0 }
 803 };
 804
 805 bitmask_transtbl oflag_tbl[] = {
 806         { TARGET_OPOST, TARGET_OPOST, OPOST, OPOST },
 807         { TARGET_OLCUC, TARGET_OLCUC, OLCUC, OLCUC },
 808         { TARGET_ONLCR, TARGET_ONLCR, ONLCR, ONLCR },
 809         { TARGET_OCRNL, TARGET_OCRNL, OCRNL, OCRNL },
 810         { TARGET_ONOCR, TARGET_ONOCR, ONOCR, ONOCR },
 811         { TARGET_ONLRET, TARGET_ONLRET, ONLRET, ONLRET },
 812         { TARGET_OFILL, TARGET_OFILL, OFILL, OFILL },
 813         { TARGET_OFDEL, TARGET_OFDEL, OFDEL, OFDEL },
 814         { TARGET_NLDLY, TARGET_NL0, NLDLY, NL0 },
 815         { TARGET_NLDLY, TARGET_NL1, NLDLY, NL1 },
 816         { TARGET_CRDLY, TARGET_CR0, CRDLY, CR0 },
 817         { TARGET_CRDLY, TARGET_CR1, CRDLY, CR1 },
 818         { TARGET_CRDLY, TARGET_CR2, CRDLY, CR2 },
 819         { TARGET_CRDLY, TARGET_CR3, CRDLY, CR3 },
 820         { TARGET_TABDLY, TARGET_TAB0, TABDLY, TAB0 },
 821         { TARGET_TABDLY, TARGET_TAB1, TABDLY, TAB1 },
 822         { TARGET_TABDLY, TARGET_TAB2, TABDLY, TAB2 },
 823         { TARGET_TABDLY, TARGET_TAB3, TABDLY, TAB3 },
 824         { TARGET_BSDLY, TARGET_BS0, BSDLY, BS0 },
 825         { TARGET_BSDLY, TARGET_BS1, BSDLY, BS1 },
 826         { TARGET_VTDLY, TARGET_VT0, VTDLY, VT0 },
 827         { TARGET_VTDLY, TARGET_VT1, VTDLY, VT1 },
 828         { TARGET_FFDLY, TARGET_FF0, FFDLY, FF0 },
 829         { TARGET_FFDLY, TARGET_FF1, FFDLY, FF1 },
 830         { 0, 0, 0, 0 }
 831 };
 832
 833 bitmask_transtbl cflag_tbl[] = {
 834         { TARGET_CBAUD, TARGET_B0, CBAUD, B0 },
 835         { TARGET_CBAUD, TARGET_B50, CBAUD, B50 },
 836         { TARGET_CBAUD, TARGET_B75, CBAUD, B75 },
 837         { TARGET_CBAUD, TARGET_B110, CBAUD, B110 },
 838         { TARGET_CBAUD, TARGET_B134, CBAUD, B134 },
 839         { TARGET_CBAUD, TARGET_B150, CBAUD, B150 },
 840         { TARGET_CBAUD, TARGET_B200, CBAUD, B200 },
 841         { TARGET_CBAUD, TARGET_B300, CBAUD, B300 },
 842         { TARGET_CBAUD, TARGET_B600, CBAUD, B600 },
 843         { TARGET_CBAUD, TARGET_B1200, CBAUD, B1200 },
 844         { TARGET_CBAUD, TARGET_B1800, CBAUD, B1800 },
 845         { TARGET_CBAUD, TARGET_B2400, CBAUD, B2400 },
 846         { TARGET_CBAUD, TARGET_B4800, CBAUD, B4800 },
 847         { TARGET_CBAUD, TARGET_B9600, CBAUD, B9600 },
 848         { TARGET_CBAUD, TARGET_B19200, CBAUD, B19200 },
 849         { TARGET_CBAUD, TARGET_B38400, CBAUD, B38400 },
 850         { TARGET_CBAUD, TARGET_B57600, CBAUD, B57600 },
 851         { TARGET_CBAUD, TARGET_B115200, CBAUD, B115200 },
 852         { TARGET_CBAUD, TARGET_B230400, CBAUD, B230400 },
 853         { TARGET_CBAUD, TARGET_B460800, CBAUD, B460800 },
 854         { TARGET_CSIZE, TARGET_CS5, CSIZE, CS5 },
 855         { TARGET_CSIZE, TARGET_CS6, CSIZE, CS6 },
 856         { TARGET_CSIZE, TARGET_CS7, CSIZE, CS7 },
 857         { TARGET_CSIZE, TARGET_CS8, CSIZE, CS8 },
 858         { TARGET_CSTOPB, TARGET_CSTOPB, CSTOPB, CSTOPB },
 859         { TARGET_CREAD, TARGET_CREAD, CREAD, CREAD },
 860         { TARGET_PARENB, TARGET_PARENB, PARENB, PARENB },
 861         { TARGET_PARODD, TARGET_PARODD, PARODD, PARODD },
 862         { TARGET_HUPCL, TARGET_HUPCL, HUPCL, HUPCL },
 863         { TARGET_CLOCAL, TARGET_CLOCAL, CLOCAL, CLOCAL },
 864         { TARGET_CRTSCTS, TARGET_CRTSCTS, CRTSCTS, CRTSCTS },
 865         { 0, 0, 0, 0 }
 866 };
 867
 868 bitmask_transtbl lflag_tbl[] = {
 869         { TARGET_ISIG, TARGET_ISIG, ISIG, ISIG },
 870         { TARGET_ICANON, TARGET_ICANON, ICANON, ICANON },
 871         { TARGET_XCASE, TARGET_XCASE, XCASE, XCASE },
 872         { TARGET_ECHO, TARGET_ECHO, ECHO, ECHO },
 873         { TARGET_ECHOE, TARGET_ECHOE, ECHOE, ECHOE },
 874         { TARGET_ECHOK, TARGET_ECHOK, ECHOK, ECHOK },
 875         { TARGET_ECHONL, TARGET_ECHONL, ECHONL, ECHONL },
 876         { TARGET_NOFLSH, TARGET_NOFLSH, NOFLSH, NOFLSH },
 877         { TARGET_TOSTOP, TARGET_TOSTOP, TOSTOP, TOSTOP },
 878         { TARGET_ECHOCTL, TARGET_ECHOCTL, ECHOCTL, ECHOCTL },
 879         { TARGET_ECHOPRT, TARGET_ECHOPRT, ECHOPRT, ECHOPRT },
 880         { TARGET_ECHOKE, TARGET_ECHOKE, ECHOKE, ECHOKE },
 881         { TARGET_FLUSHO, TARGET_FLUSHO, FLUSHO, FLUSHO },
 882         { TARGET_PENDIN, TARGET_PENDIN, PENDIN, PENDIN },
 883         { TARGET_IEXTEN, TARGET_IEXTEN, IEXTEN, IEXTEN },
 884         { 0, 0, 0, 0 }
 885 };
 886
 887 static void target_to_host_termios (void *dst, const void *src)
 888 {
 889     struct host_termios *host = dst;
 890     const struct target_termios *target = src;
 891
 892     host->c_iflag =
 893         target_to_host_bitmask(tswap32(target->c_iflag), iflag_tbl);
 894     host->c_oflag =
 895         target_to_host_bitmask(tswap32(target->c_oflag), oflag_tbl);
 896     host->c_cflag =
 897         target_to_host_bitmask(tswap32(target->c_cflag), cflag_tbl);
 898     host->c_lflag =
 899         target_to_host_bitmask(tswap32(target->c_lflag), lflag_tbl);
 900     host->c_line = target->c_line;
 901
 902     host->c_cc[VINTR] = target->c_cc[TARGET_VINTR];
 903     host->c_cc[VQUIT] = target->c_cc[TARGET_VQUIT];
 904     host->c_cc[VERASE] = target->c_cc[TARGET_VERASE];
 905     host->c_cc[VKILL] = target->c_cc[TARGET_VKILL];
 906     host->c_cc[VEOF] = target->c_cc[TARGET_VEOF];
 907     host->c_cc[VTIME] = target->c_cc[TARGET_VTIME];
 908     host->c_cc[VMIN] = target->c_cc[TARGET_VMIN];
 909     host->c_cc[VSWTC] = target->c_cc[TARGET_VSWTC];
 910     host->c_cc[VSTART] = target->c_cc[TARGET_VSTART];
 911     host->c_cc[VSTOP] = target->c_cc[TARGET_VSTOP];
 912     host->c_cc[VSUSP] = target->c_cc[TARGET_VSUSP];
 913     host->c_cc[VEOL] = target->c_cc[TARGET_VEOL];
 914     host->c_cc[VREPRINT] = target->c_cc[TARGET_VREPRINT];
 915     host->c_cc[VDISCARD] = target->c_cc[TARGET_VDISCARD];
 916     host->c_cc[VWERASE] = target->c_cc[TARGET_VWERASE];
 917     host->c_cc[VLNEXT] = target->c_cc[TARGET_VLNEXT];
 918     host->c_cc[VEOL2] = target->c_cc[TARGET_VEOL2];
 919 }
 920
 921 static void host_to_target_termios (void *dst, const void *src)
 922 {
 923     struct target_termios *target = dst;
 924     const struct host_termios *host = src;
 925
 926     target->c_iflag =
 927         tswap32(host_to_target_bitmask(host->c_iflag, iflag_tbl));
 928     target->c_oflag =
 929         tswap32(host_to_target_bitmask(host->c_oflag, oflag_tbl));
 930     target->c_cflag =
 931         tswap32(host_to_target_bitmask(host->c_cflag, cflag_tbl));
 932     target->c_lflag =
 933         tswap32(host_to_target_bitmask(host->c_lflag, lflag_tbl));
 934     target->c_line = host->c_line;
 935
 936     target->c_cc[TARGET_VINTR] = host->c_cc[VINTR];
 937     target->c_cc[TARGET_VQUIT] = host->c_cc[VQUIT];
 938     target->c_cc[TARGET_VERASE] = host->c_cc[VERASE];
 939     target->c_cc[TARGET_VKILL] = host->c_cc[VKILL];
 940     target->c_cc[TARGET_VEOF] = host->c_cc[VEOF];
 941     target->c_cc[TARGET_VTIME] = host->c_cc[VTIME];
 942     target->c_cc[TARGET_VMIN] = host->c_cc[VMIN];
 943     target->c_cc[TARGET_VSWTC] = host->c_cc[VSWTC];
 944     target->c_cc[TARGET_VSTART] = host->c_cc[VSTART];
 945     target->c_cc[TARGET_VSTOP] = host->c_cc[VSTOP];
 946     target->c_cc[TARGET_VSUSP] = host->c_cc[VSUSP];
 947     target->c_cc[TARGET_VEOL] = host->c_cc[VEOL];
 948     target->c_cc[TARGET_VREPRINT] = host->c_cc[VREPRINT];
 949     target->c_cc[TARGET_VDISCARD] = host->c_cc[VDISCARD];
 950     target->c_cc[TARGET_VWERASE] = host->c_cc[VWERASE];
 951     target->c_cc[TARGET_VLNEXT] = host->c_cc[VLNEXT];
 952     target->c_cc[TARGET_VEOL2] = host->c_cc[VEOL2];
 953 }
 954
 955 StructEntry struct_termios_def = {
 956     .convert = { host_to_target_termios, target_to_host_termios },
 957     .size = { sizeof(struct target_termios), sizeof(struct host_termios) },
 958     .align = { __alignof__(struct target_termios), __alignof__(struct host_termios) },
 959 };
 960
 961 #ifdef TARGET_I386
 962
 963 /* NOTE: there is really one LDT for all the threads */
 964 uint8_t *ldt_table;
 965
 966 static int read_ldt(void *ptr, unsigned long bytecount)
 967 {
 968     int size;
 969
 970     if (!ldt_table)
 971         return 0;
 972     size = TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE;
 973     if (size > bytecount)
 974         size = bytecount;
 975     memcpy(ptr, ldt_table, size);
 976     return size;
 977 }
 978
 979 /* XXX: add locking support */
 980 static int write_ldt(CPUX86State *env,
 981                      void *ptr, unsigned long bytecount, int oldmode)
 982 {
 983     struct target_modify_ldt_ldt_s ldt_info;
 984     int seg_32bit, contents, read_exec_only, limit_in_pages;
 985     int seg_not_present, useable;
 986     uint32_t *lp, entry_1, entry_2;
 987
 988     if (bytecount != sizeof(ldt_info))
 989         return -EINVAL;
 990     memcpy(&ldt_info, ptr, sizeof(ldt_info));
 991     tswap32s(&ldt_info.entry_number);
 992     tswapls((long *)&ldt_info.base_addr);
 993     tswap32s(&ldt_info.limit);
 994     tswap32s(&ldt_info.flags);
 995
 996     if (ldt_info.entry_number >= TARGET_LDT_ENTRIES)
 997         return -EINVAL;
 998     seg_32bit = ldt_info.flags & 1;
 999     contents = (ldt_info.flags >> 1) & 3;
1000     read_exec_only = (ldt_info.flags >> 3) & 1;
1001     limit_in_pages = (ldt_info.flags >> 4) & 1;
1002     seg_not_present = (ldt_info.flags >> 5) & 1;
1003     useable = (ldt_info.flags >> 6) & 1;
1004
1005     if (contents == 3) {
1006         if (oldmode)
1007             return -EINVAL;
1008         if (seg_not_present == 0)
1009             return -EINVAL;
1010     }
1011     /* allocate the LDT */
1012     if (!ldt_table) {
1013         ldt_table = malloc(TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE);
1014         if (!ldt_table)
1015             return -ENOMEM;
1016         memset(ldt_table, 0, TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE);
1017         env->ldt.base = ldt_table;
1018         env->ldt.limit = 0xffff;
1019     }
1020
1021     /* NOTE: same code as Linux kernel */
1022     /* Allow LDTs to be cleared by the user. */
1023     if (ldt_info.base_addr == 0 && ldt_info.limit == 0) {
1024         if (oldmode ||
1025             (contents == 0              &&
1026              read_exec_only == 1        &&
1027              seg_32bit == 0             &&
1028              limit_in_pages == 0        &&
1029              seg_not_present == 1       &&
1030              useable == 0 )) {
1031             entry_1 = 0;
1032             entry_2 = 0;
1033             goto install;
1034         }
1035     }
1036
1037     entry_1 = ((ldt_info.base_addr & 0x0000ffff) << 16) |
1038         (ldt_info.limit & 0x0ffff);
1039     entry_2 = (ldt_info.base_addr & 0xff000000) |
1040         ((ldt_info.base_addr & 0x00ff0000) >> 16) |
1041         (ldt_info.limit & 0xf0000) |
1042         ((read_exec_only ^ 1) << 9) |
1043         (contents << 10) |
1044         ((seg_not_present ^ 1) << 15) |
1045         (seg_32bit << 22) |
1046         (limit_in_pages << 23) |
1047         0x7000;
1048     if (!oldmode)
1049         entry_2 |= (useable << 20);
1050
1051     /* Install the new entry ...  */
1052 install:
1053     lp = (uint32_t *)(ldt_table + (ldt_info.entry_number << 3));
1054     lp[0] = tswap32(entry_1);
1055     lp[1] = tswap32(entry_2);
1056     return 0;
1057 }
1058
1059 /* specific and weird i386 syscalls */
1060 int do_modify_ldt(CPUX86State *env, int func, void *ptr, unsigned long bytecount)
1061 {
1062     int ret = -ENOSYS;
1063
1064     switch (func) {
1065     case 0:
1066         ret = read_ldt(ptr, bytecount);
1067         break;
1068     case 1:
1069         ret = write_ldt(env, ptr, bytecount, 1);
1070         break;
1071     case 0x11:
1072         ret = write_ldt(env, ptr, bytecount, 0);
1073         break;
1074     }
1075     return ret;
1076 }
1077
1078 /* this stack is the equivalent of the kernel stack associated with a
1079    thread/process */
1080 #define NEW_STACK_SIZE 8192
1081
1082 static int clone_func(void *arg)
1083 {
1084     CPUX86State *env = arg;
1085     cpu_loop(env);
1086     /* never exits */
1087     return 0;
1088 }
1089
1090 int do_fork(CPUX86State *env, unsigned int flags, unsigned long newsp)
1091 {
1092     int ret;
1093     TaskState *ts;
1094     uint8_t *new_stack;
1095     CPUX86State *new_env;
1096
1097     if (flags & CLONE_VM) {
1098         if (!newsp)
1099             newsp = env->regs[R_ESP];
1100         ts = malloc(sizeof(TaskState) + NEW_STACK_SIZE);
1101         memset(ts, 0, sizeof(TaskState));
1102         new_stack = ts->stack;
1103         ts->used = 1;
1104         /* add in task state list */
1105         ts->next = first_task_state;
1106         first_task_state = ts;
1107         /* we create a new CPU instance. */
1108         new_env = cpu_x86_init();
1109         memcpy(new_env, env, sizeof(CPUX86State));
1110         new_env->regs[R_ESP] = newsp;
1111         new_env->regs[R_EAX] = 0;
1112         new_env->opaque = ts;
1113 #ifdef __ia64__
1114         ret = clone2(clone_func, new_stack + NEW_STACK_SIZE, flags, new_env);
1115 #else
1116         ret = clone(clone_func, new_stack + NEW_STACK_SIZE, flags, new_env);
1117 #endif
1118     } else {
1119         /* if no CLONE_VM, we consider it is a fork */
1120         if ((flags & ~CSIGNAL) != 0)
1121             return -EINVAL;
1122         ret = fork();
1123     }
1124     return ret;
1125 }
1126
1127 #endif
1128
1129 static long do_fcntl(int fd, int cmd, unsigned long arg)
1130 {
1131     struct flock fl;
1132     struct target_flock *target_fl = (void *)arg;
1133     long ret;
1134
1135     switch(cmd) {
1136     case TARGET_F_GETLK:
1137         ret = fcntl(fd, cmd, &fl);
1138         if (ret == 0) {
1139             target_fl->l_type = tswap16(fl.l_type);
1140             target_fl->l_whence = tswap16(fl.l_whence);
1141             target_fl->l_start = tswapl(fl.l_start);
1142             target_fl->l_len = tswapl(fl.l_len);
1143             target_fl->l_pid = tswapl(fl.l_pid);
1144         }
1145         break;
1146
1147     case TARGET_F_SETLK:
1148     case TARGET_F_SETLKW:
1149         fl.l_type = tswap16(target_fl->l_type);
1150         fl.l_whence = tswap16(target_fl->l_whence);
1151         fl.l_start = tswapl(target_fl->l_start);
1152         fl.l_len = tswapl(target_fl->l_len);
1153         fl.l_pid = tswapl(target_fl->l_pid);
1154         ret = fcntl(fd, cmd, &fl);
1155         break;
1156
1157     case TARGET_F_GETLK64:
1158     case TARGET_F_SETLK64:
1159     case TARGET_F_SETLKW64:
1160         ret = -1;
1161         errno = EINVAL;
1162         break;
1163
1164     default:
1165         ret = fcntl(fd, cmd, arg);
1166         break;
1167     }
1168     return ret;
1169 }
1170
1171
1172 #define high2lowuid(x) (x)
1173 #define high2lowgid(x) (x)
1174 #define low2highuid(x) (x)
1175 #define low2highgid(x) (x)
1176
1177 void syscall_init(void)
1178 {
1179 #define STRUCT(name, list...) thunk_register_struct(STRUCT_ ## name, #name, struct_ ## name ## _def);
1180 #define STRUCT_SPECIAL(name) thunk_register_struct_direct(STRUCT_ ## name, #name, &struct_ ## name ## _def);
1181 #include "syscall_types.h"
1182 #undef STRUCT
1183 #undef STRUCT_SPECIAL
1184 }
1185
1186 long do_syscall(void *cpu_env, int num, long arg1, long arg2, long arg3,
1187                 long arg4, long arg5, long arg6)
1188 {
1189     long ret;
1190     struct stat st;
1191     struct kernel_statfs *stfs;
1192
1193 #ifdef DEBUG
1194     gemu_log("syscall %d\n", num);
1195 #endif
1196     switch(num) {
1197     case TARGET_NR_exit:
1198 #ifdef HAVE_GPROF
1199         _mcleanup();
1200 #endif
1201         /* XXX: should free thread stack and CPU env */
1202         _exit(arg1);
1203         ret = 0; /* avoid warning */
1204         break;
1205     case TARGET_NR_read:
1206         page_unprotect_range((void *)arg2, arg3);
1207         ret = get_errno(read(arg1, (void *)arg2, arg3));
1208         break;
1209     case TARGET_NR_write:
1210         ret = get_errno(write(arg1, (void *)arg2, arg3));
1211         break;
1212     case TARGET_NR_open:
1213         ret = get_errno(open(path((const char *)arg1), arg2, arg3));
1214         break;
1215     case TARGET_NR_close:
1216         ret = get_errno(close(arg1));
1217         break;
1218     case TARGET_NR_brk:
1219         ret = do_brk((char *)arg1);
1220         break;
1221     case TARGET_NR_fork:
1222         ret = get_errno(do_fork(cpu_env, SIGCHLD, 0));
1223         break;
1224     case TARGET_NR_waitpid:
1225         {
1226             int *status = (int *)arg2;
1227             ret = get_errno(waitpid(arg1, status, arg3));
1228             if (!is_error(ret) && status)
1229                 tswapls((long *)&status);
1230         }
1231         break;
1232     case TARGET_NR_creat:
1233         ret = get_errno(creat((const char *)arg1, arg2));
1234         break;
1235     case TARGET_NR_link:
1236         ret = get_errno(link((const char *)arg1, (const char *)arg2));
1237         break;
1238     case TARGET_NR_unlink:
1239         ret = get_errno(unlink((const char *)arg1));
1240         break;
1241     case TARGET_NR_execve:
1242         {
1243             char **argp, **envp;
1244             int argc, envc;
1245             uint32_t *p;
1246             char **q;
1247
1248             argc = 0;
1249             for (p = (void *)arg2; *p; p++)
1250                 argc++;
1251             envc = 0;
1252             for (p = (void *)arg3; *p; p++)
1253                 envc++;
1254
1255             argp = alloca((argc + 1) * sizeof(void *));
1256             envp = alloca((envc + 1) * sizeof(void *));
1257
1258             for (p = (void *)arg2, q = argp; *p; p++, q++)
1259                 *q = (void *)tswap32(*p);
1260             *q = NULL;
1261
1262             for (p = (void *)arg3, q = envp; *p; p++, q++)
1263                 *q = (void *)tswap32(*p);
1264             *q = NULL;
1265
1266             ret = get_errno(execve((const char *)arg1, argp, envp));
1267         }
1268         break;
1269     case TARGET_NR_chdir:
1270         ret = get_errno(chdir((const char *)arg1));
1271         break;
1272     case TARGET_NR_time:
1273         {
1274             int *time_ptr = (int *)arg1;
1275             ret = get_errno(time((time_t *)time_ptr));
1276             if (!is_error(ret) && time_ptr)
1277                 tswap32s(time_ptr);
1278         }
1279         break;
1280     case TARGET_NR_mknod:
1281         ret = get_errno(mknod((const char *)arg1, arg2, arg3));
1282         break;
1283     case TARGET_NR_chmod:
1284         ret = get_errno(chmod((const char *)arg1, arg2));
1285         break;
1286     case TARGET_NR_lchown:
1287         ret = get_errno(chown((const char *)arg1, arg2, arg3));
1288         break;
1289     case TARGET_NR_break:
1290         goto unimplemented;
1291     case TARGET_NR_oldstat:
1292         goto unimplemented;
1293     case TARGET_NR_lseek:
1294         ret = get_errno(lseek(arg1, arg2, arg3));
1295         break;
1296     case TARGET_NR_getpid:
1297         ret = get_errno(getpid());
1298         break;
1299     case TARGET_NR_mount:
1300         /* need to look at the data field */
1301         goto unimplemented;
1302     case TARGET_NR_umount:
1303         ret = get_errno(umount((const char *)arg1));
1304         break;
1305     case TARGET_NR_setuid:
1306         ret = get_errno(setuid(low2highuid(arg1)));
1307         break;
1308     case TARGET_NR_getuid:
1309         ret = get_errno(getuid());
1310         break;
1311     case TARGET_NR_stime:
1312         {
1313             int *time_ptr = (int *)arg1;
1314             if (time_ptr)
1315                 tswap32s(time_ptr);
1316             ret = get_errno(stime((time_t *)time_ptr));
1317         }
1318         break;
1319     case TARGET_NR_ptrace:
1320         goto unimplemented;
1321     case TARGET_NR_alarm:
1322         ret = alarm(arg1);
1323         break;
1324     case TARGET_NR_oldfstat:
1325         goto unimplemented;
1326     case TARGET_NR_pause:
1327         ret = get_errno(pause());
1328         break;
1329     case TARGET_NR_utime:
1330         goto unimplemented;
1331     case TARGET_NR_stty:
1332         goto unimplemented;
1333     case TARGET_NR_gtty:
1334         goto unimplemented;
1335     case TARGET_NR_access:
1336         ret = get_errno(access((const char *)arg1, arg2));
1337         break;
1338     case TARGET_NR_nice:
1339         ret = get_errno(nice(arg1));
1340         break;
1341     case TARGET_NR_ftime:
1342         goto unimplemented;
1343     case TARGET_NR_sync:
1344         sync();
1345         ret = 0;
1346         break;
1347     case TARGET_NR_kill:
1348         ret = get_errno(kill(arg1, arg2));
1349         break;
1350     case TARGET_NR_rename:
1351         ret = get_errno(rename((const char *)arg1, (const char *)arg2));
1352         break;
1353     case TARGET_NR_mkdir:
1354         ret = get_errno(mkdir((const char *)arg1, arg2));
1355         break;
1356     case TARGET_NR_rmdir:
1357         ret = get_errno(rmdir((const char *)arg1));
1358         break;
1359     case TARGET_NR_dup:
1360         ret = get_errno(dup(arg1));
1361         break;
1362     case TARGET_NR_pipe:
1363         {
1364             int *pipe_ptr = (int *)arg1;
1365             ret = get_errno(pipe(pipe_ptr));
1366             if (!is_error(ret)) {
1367                 tswap32s(&pipe_ptr[0]);
1368                 tswap32s(&pipe_ptr[1]);
1369             }
1370         }
1371         break;
1372     case TARGET_NR_times:
1373         {
1374             struct target_tms *tmsp = (void *)arg1;
1375             struct tms tms;
1376             ret = get_errno(times(&tms));
1377             if (tmsp) {
1378                 tmsp->tms_utime = tswapl(tms.tms_utime);
1379                 tmsp->tms_stime = tswapl(tms.tms_stime);
1380                 tmsp->tms_cutime = tswapl(tms.tms_cutime);
1381                 tmsp->tms_cstime = tswapl(tms.tms_cstime);
1382             }
1383         }
1384         break;
1385     case TARGET_NR_prof:
1386         goto unimplemented;
1387     case TARGET_NR_setgid:
1388         ret = get_errno(setgid(low2highgid(arg1)));
1389         break;
1390     case TARGET_NR_getgid:
1391         ret = get_errno(getgid());
1392         break;
1393     case TARGET_NR_signal:
1394         goto unimplemented;
1395     case TARGET_NR_geteuid:
1396         ret = get_errno(geteuid());
1397         break;
1398     case TARGET_NR_getegid:
1399         ret = get_errno(getegid());
1400         break;
1401     case TARGET_NR_acct:
1402         goto unimplemented;
1403     case TARGET_NR_umount2:
1404         ret = get_errno(umount2((const char *)arg1, arg2));
1405         break;
1406     case TARGET_NR_lock:
1407         goto unimplemented;
1408     case TARGET_NR_ioctl:
1409         ret = do_ioctl(arg1, arg2, arg3);
1410         break;
1411     case TARGET_NR_fcntl:
1412         ret = get_errno(do_fcntl(arg1, arg2, arg3));
1413         break;
1414     case TARGET_NR_mpx:
1415         goto unimplemented;
1416     case TARGET_NR_setpgid:
1417         ret = get_errno(setpgid(arg1, arg2));
1418         break;
1419     case TARGET_NR_ulimit:
1420         goto unimplemented;
1421     case TARGET_NR_oldolduname:
1422         goto unimplemented;
1423     case TARGET_NR_umask:
1424         ret = get_errno(umask(arg1));
1425         break;
1426     case TARGET_NR_chroot:
1427         ret = get_errno(chroot((const char *)arg1));
1428         break;
1429     case TARGET_NR_ustat:
1430         goto unimplemented;
1431     case TARGET_NR_dup2:
1432         ret = get_errno(dup2(arg1, arg2));
1433         break;
1434     case TARGET_NR_getppid:
1435         ret = get_errno(getppid());
1436         break;
1437     case TARGET_NR_getpgrp:
1438         ret = get_errno(getpgrp());
1439         break;
1440     case TARGET_NR_setsid:
1441         ret = get_errno(setsid());
1442         break;
1443     case TARGET_NR_sigaction:
1444         {
1445             struct target_old_sigaction *old_act = (void *)arg2;
1446             struct target_old_sigaction *old_oact = (void *)arg3;
1447             struct target_sigaction act, oact, *pact;
1448             if (old_act) {
1449                 act._sa_handler = old_act->_sa_handler;
1450                 target_siginitset(&act.sa_mask, old_act->sa_mask);
1451                 act.sa_flags = old_act->sa_flags;
1452                 act.sa_restorer = old_act->sa_restorer;
1453                 pact = &act;
1454             } else {
1455                 pact = NULL;
1456             }
1457             ret = get_errno(do_sigaction(arg1, pact, &oact));
1458             if (!is_error(ret) && old_oact) {
1459                 old_oact->_sa_handler = oact._sa_handler;
1460                 old_oact->sa_mask = oact.sa_mask.sig[0];
1461                 old_oact->sa_flags = oact.sa_flags;
1462                 old_oact->sa_restorer = oact.sa_restorer;
1463             }
1464         }
1465         break;
1466     case TARGET_NR_rt_sigaction:
1467         ret = get_errno(do_sigaction(arg1, (void *)arg2, (void *)arg3));
1468         break;
1469     case TARGET_NR_sgetmask:
1470         {
1471             sigset_t cur_set;
1472             target_ulong target_set;
1473             sigprocmask(0, NULL, &cur_set);
1474             host_to_target_old_sigset(&target_set, &cur_set);
1475             ret = target_set;
1476         }
1477         break;
1478     case TARGET_NR_ssetmask:
1479         {
1480             sigset_t set, oset, cur_set;
1481             target_ulong target_set = arg1;
1482             sigprocmask(0, NULL, &cur_set);
1483             target_to_host_old_sigset(&set, &target_set);
1484             sigorset(&set, &set, &cur_set);
1485             sigprocmask(SIG_SETMASK, &set, &oset);
1486             host_to_target_old_sigset(&target_set, &oset);
1487             ret = target_set;
1488         }
1489         break;
1490     case TARGET_NR_sigprocmask:
1491         {
1492             int how = arg1;
1493             sigset_t set, oldset, *set_ptr;
1494             target_ulong *pset = (void *)arg2, *poldset = (void *)arg3;
1495
1496             if (pset) {
1497                 switch(how) {
1498                 case TARGET_SIG_BLOCK:
1499                     how = SIG_BLOCK;
1500                     break;
1501                 case TARGET_SIG_UNBLOCK:
1502                     how = SIG_UNBLOCK;
1503                     break;
1504                 case TARGET_SIG_SETMASK:
1505                     how = SIG_SETMASK;
1506                     break;
1507                 default:
1508                     ret = -EINVAL;
1509                     goto fail;
1510                 }
1511                 target_to_host_old_sigset(&set, pset);
1512                 set_ptr = &set;
1513             } else {
1514                 how = 0;
1515                 set_ptr = NULL;
1516             }
1517             ret = get_errno(sigprocmask(arg1, set_ptr, &oldset));
1518             if (!is_error(ret) && poldset) {
1519                 host_to_target_old_sigset(poldset, &oldset);
1520             }
1521         }
1522         break;
1523     case TARGET_NR_rt_sigprocmask:
1524         {
1525             int how = arg1;
1526             sigset_t set, oldset, *set_ptr;
1527             target_sigset_t *pset = (void *)arg2;
1528             target_sigset_t *poldset = (void *)arg3;
1529
1530             if (pset) {
1531                 switch(how) {
1532                 case TARGET_SIG_BLOCK:
1533                     how = SIG_BLOCK;
1534                     break;
1535                 case TARGET_SIG_UNBLOCK:
1536                     how = SIG_UNBLOCK;
1537                     break;
1538                 case TARGET_SIG_SETMASK:
1539                     how = SIG_SETMASK;
1540                     break;
1541                 default:
1542                     ret = -EINVAL;
1543                     goto fail;
1544                 }
1545                 target_to_host_sigset(&set, pset);
1546                 set_ptr = &set;
1547             } else {
1548                 how = 0;
1549                 set_ptr = NULL;
1550             }
1551             ret = get_errno(sigprocmask(how, set_ptr, &oldset));
1552             if (!is_error(ret) && poldset) {
1553                 host_to_target_sigset(poldset, &oldset);
1554             }
1555         }
1556         break;
1557     case TARGET_NR_sigpending:
1558         {
1559             sigset_t set;
1560             ret = get_errno(sigpending(&set));
1561             if (!is_error(ret)) {
1562                 host_to_target_old_sigset((target_ulong *)arg1, &set);
1563             }
1564         }
1565         break;
1566     case TARGET_NR_rt_sigpending:
1567         {
1568             sigset_t set;
1569             ret = get_errno(sigpending(&set));
1570             if (!is_error(ret)) {
1571                 host_to_target_sigset((target_sigset_t *)arg1, &set);
1572             }
1573         }
1574         break;
1575     case TARGET_NR_sigsuspend:
1576         {
1577             sigset_t set;
1578             target_to_host_old_sigset(&set, (target_ulong *)arg1);
1579             ret = get_errno(sigsuspend(&set));
1580         }
1581         break;
1582     case TARGET_NR_rt_sigsuspend:
1583         {
1584             sigset_t set;
1585             target_to_host_sigset(&set, (target_sigset_t *)arg1);
1586             ret = get_errno(sigsuspend(&set));
1587         }
1588         break;
1589     case TARGET_NR_rt_sigtimedwait:
1590         {
1591             target_sigset_t *target_set = (void *)arg1;
1592             target_siginfo_t *target_uinfo = (void *)arg2;
1593             struct target_timespec *target_uts = (void *)arg3;
1594             sigset_t set;
1595             struct timespec uts, *puts;
1596             siginfo_t uinfo;
1597
1598             target_to_host_sigset(&set, target_set);
1599             if (target_uts) {
1600                 puts = &uts;
1601                 puts->tv_sec = tswapl(target_uts->tv_sec);
1602                 puts->tv_nsec = tswapl(target_uts->tv_nsec);
1603             } else {
1604                 puts = NULL;
1605             }
1606             ret = get_errno(sigtimedwait(&set, &uinfo, puts));
1607             if (!is_error(ret) && target_uinfo) {
1608                 host_to_target_siginfo(target_uinfo, &uinfo);
1609             }
1610         }
1611         break;
1612     case TARGET_NR_rt_sigqueueinfo:
1613         {
1614             siginfo_t uinfo;
1615             target_to_host_siginfo(&uinfo, (target_siginfo_t *)arg3);
1616             ret = get_errno(sys_rt_sigqueueinfo(arg1, arg2, &uinfo));
1617         }
1618         break;
1619     case TARGET_NR_sigreturn:
1620         /* NOTE: ret is eax, so not transcoding must be done */
1621         ret = do_sigreturn(cpu_env);
1622         break;
1623     case TARGET_NR_rt_sigreturn:
1624         /* NOTE: ret is eax, so not transcoding must be done */
1625         ret = do_rt_sigreturn(cpu_env);
1626         break;
1627     case TARGET_NR_setreuid:
1628         ret = get_errno(setreuid(arg1, arg2));
1629         break;
1630     case TARGET_NR_setregid:
1631         ret = get_errno(setregid(arg1, arg2));
1632         break;
1633     case TARGET_NR_sethostname:
1634         ret = get_errno(sethostname((const char *)arg1, arg2));
1635         break;
1636     case TARGET_NR_setrlimit:
1637         {
1638             /* XXX: convert resource ? */
1639             int resource = arg1;
1640             struct target_rlimit *target_rlim = (void *)arg2;
1641             struct rlimit rlim;
1642             rlim.rlim_cur = tswapl(target_rlim->rlim_cur);
1643             rlim.rlim_max = tswapl(target_rlim->rlim_max);
1644             ret = get_errno(setrlimit(resource, &rlim));
1645         }
1646         break;
1647     case TARGET_NR_getrlimit:
1648         {
1649             /* XXX: convert resource ? */
1650             int resource = arg1;
1651             struct target_rlimit *target_rlim = (void *)arg2;
1652             struct rlimit rlim;
1653
1654             ret = get_errno(getrlimit(resource, &rlim));
1655             if (!is_error(ret)) {
1656                 target_rlim->rlim_cur = tswapl(rlim.rlim_cur);
1657                 target_rlim->rlim_max = tswapl(rlim.rlim_max);
1658             }
1659         }
1660         break;
1661     case TARGET_NR_getrusage:
1662         {
1663             struct rusage rusage;
1664             struct target_rusage *target_rusage = (void *)arg2;
1665             ret = get_errno(getrusage(arg1, &rusage));
1666             if (!is_error(ret)) {
1667                 host_to_target_rusage(target_rusage, &rusage);
1668             }
1669         }
1670         break;
1671     case TARGET_NR_gettimeofday:
1672         {
1673             struct target_timeval *target_tv = (void *)arg1;
1674             struct timeval tv;
1675             ret = get_errno(gettimeofday(&tv, NULL));
1676             if (!is_error(ret)) {
1677                 host_to_target_timeval(target_tv, &tv);
1678             }
1679         }
1680         break;
1681     case TARGET_NR_settimeofday:
1682         {
1683             struct target_timeval *target_tv = (void *)arg1;
1684             struct timeval tv;
1685             target_to_host_timeval(&tv, target_tv);
1686             ret = get_errno(settimeofday(&tv, NULL));
1687         }
1688         break;
1689     case TARGET_NR_getgroups:
1690         {
1691             int gidsetsize = arg1;
1692             uint16_t *target_grouplist = (void *)arg2;
1693             gid_t *grouplist;
1694             int i;
1695
1696             grouplist = alloca(gidsetsize * sizeof(gid_t));
1697             ret = get_errno(getgroups(gidsetsize, grouplist));
1698             if (!is_error(ret)) {
1699                 for(i = 0;i < gidsetsize; i++)
1700                     target_grouplist[i] = tswap16(grouplist[i]);
1701             }
1702         }
1703         break;
1704     case TARGET_NR_setgroups:
1705         {
1706             int gidsetsize = arg1;
1707             uint16_t *target_grouplist = (void *)arg2;
1708             gid_t *grouplist;
1709             int i;
1710
1711             grouplist = alloca(gidsetsize * sizeof(gid_t));
1712             for(i = 0;i < gidsetsize; i++)
1713                 grouplist[i] = tswap16(target_grouplist[i]);
1714             ret = get_errno(setgroups(gidsetsize, grouplist));
1715         }
1716         break;
1717     case TARGET_NR_select:
1718         goto unimplemented;
1719     case TARGET_NR_symlink:
1720         ret = get_errno(symlink((const char *)arg1, (const char *)arg2));
1721         break;
1722     case TARGET_NR_oldlstat:
1723         goto unimplemented;
1724     case TARGET_NR_readlink:
1725         ret = get_errno(readlink(path((const char *)arg1), (char *)arg2, arg3));
1726         break;
1727     case TARGET_NR_uselib:
1728         goto unimplemented;
1729     case TARGET_NR_swapon:
1730         ret = get_errno(swapon((const char *)arg1, arg2));
1731         break;
1732     case TARGET_NR_reboot:
1733         goto unimplemented;
1734     case TARGET_NR_readdir:
1735         goto unimplemented;
1736 #ifdef TARGET_I386
1737     case TARGET_NR_mmap:
1738         {
1739             uint32_t v1, v2, v3, v4, v5, v6, *vptr;
1740             vptr = (uint32_t *)arg1;
1741             v1 = tswap32(vptr[0]);
1742             v2 = tswap32(vptr[1]);
1743             v3 = tswap32(vptr[2]);
1744             v4 = tswap32(vptr[3]);
1745             v5 = tswap32(vptr[4]);
1746             v6 = tswap32(vptr[5]);
1747             ret = get_errno(target_mmap(v1, v2, v3, v4, v5, v6));
1748         }
1749         break;
1750 #endif
1751 #ifdef TARGET_I386
1752     case TARGET_NR_mmap2:
1753 #else
1754     case TARGET_NR_mmap:
1755 #endif
1756         ret = get_errno(target_mmap(arg1, arg2, arg3, arg4, arg5, arg6));
1757         break;
1758     case TARGET_NR_munmap:
1759         ret = get_errno(target_munmap(arg1, arg2));
1760         break;
1761     case TARGET_NR_mprotect:
1762         ret = get_errno(target_mprotect(arg1, arg2, arg3));
1763         break;
1764     case TARGET_NR_mremap:
1765         ret = get_errno(target_mremap(arg1, arg2, arg3, arg4, arg5));
1766         break;
1767     case TARGET_NR_msync:
1768         ret = get_errno(msync((void *)arg1, arg2, arg3));
1769         break;
1770     case TARGET_NR_mlock:
1771         ret = get_errno(mlock((void *)arg1, arg2));
1772         break;
1773     case TARGET_NR_munlock:
1774         ret = get_errno(munlock((void *)arg1, arg2));
1775         break;
1776     case TARGET_NR_mlockall:
1777         ret = get_errno(mlockall(arg1));
1778         break;
1779     case TARGET_NR_munlockall:
1780         ret = get_errno(munlockall());
1781         break;
1782     case TARGET_NR_truncate:
1783         ret = get_errno(truncate((const char *)arg1, arg2));
1784         break;
1785     case TARGET_NR_ftruncate:
1786         ret = get_errno(ftruncate(arg1, arg2));
1787         break;
1788     case TARGET_NR_fchmod:
1789         ret = get_errno(fchmod(arg1, arg2));
1790         break;
1791     case TARGET_NR_fchown:
1792         ret = get_errno(fchown(arg1, arg2, arg3));
1793         break;
1794     case TARGET_NR_getpriority:
1795         ret = get_errno(getpriority(arg1, arg2));
1796         break;
1797     case TARGET_NR_setpriority:
1798         ret = get_errno(setpriority(arg1, arg2, arg3));
1799         break;
1800     case TARGET_NR_profil:
1801         goto unimplemented;
1802     case TARGET_NR_statfs:
1803         stfs = (void *)arg2;
1804         ret = get_errno(sys_statfs(path((const char *)arg1), stfs));
1805     convert_statfs:
1806         if (!is_error(ret)) {
1807             tswap32s(&stfs->f_type);
1808             tswap32s(&stfs->f_bsize);
1809             tswap32s(&stfs->f_blocks);
1810             tswap32s(&stfs->f_bfree);
1811             tswap32s(&stfs->f_bavail);
1812             tswap32s(&stfs->f_files);
1813             tswap32s(&stfs->f_ffree);
1814             tswap32s(&stfs->f_fsid.val[0]);
1815             tswap32s(&stfs->f_fsid.val[1]);
1816             tswap32s(&stfs->f_namelen);
1817         }
1818         break;
1819     case TARGET_NR_fstatfs:
1820         stfs = (void *)arg2;
1821         ret = get_errno(sys_fstatfs(arg1, stfs));
1822         goto convert_statfs;
1823     case TARGET_NR_ioperm:
1824         goto unimplemented;
1825     case TARGET_NR_socketcall:
1826         ret = do_socketcall(arg1, (int32_t *)arg2);
1827         break;
1828     case TARGET_NR_syslog:
1829         goto unimplemented;
1830     case TARGET_NR_setitimer:
1831         {
1832             struct target_itimerval *target_value = (void *)arg2;
1833             struct target_itimerval *target_ovalue = (void *)arg3;
1834             struct itimerval value, ovalue, *pvalue;
1835
1836             if (target_value) {
1837                 pvalue = &value;
1838                 target_to_host_timeval(&pvalue->it_interval,
1839                                        &target_value->it_interval);
1840                 target_to_host_timeval(&pvalue->it_value,
1841                                        &target_value->it_value);
1842             } else {
1843                 pvalue = NULL;
1844             }
1845             ret = get_errno(setitimer(arg1, pvalue, &ovalue));
1846             if (!is_error(ret) && target_ovalue) {
1847                 host_to_target_timeval(&target_ovalue->it_interval,
1848                                        &ovalue.it_interval);
1849                 host_to_target_timeval(&target_ovalue->it_value,
1850                                        &ovalue.it_value);
1851             }
1852         }
1853         break;
1854     case TARGET_NR_getitimer:
1855         {
1856             struct target_itimerval *target_value = (void *)arg2;
1857             struct itimerval value;
1858
1859             ret = get_errno(getitimer(arg1, &value));
1860             if (!is_error(ret) && target_value) {
1861                 host_to_target_timeval(&target_value->it_interval,
1862                                        &value.it_interval);
1863                 host_to_target_timeval(&target_value->it_value,
1864                                        &value.it_value);
1865             }
1866         }
1867         break;
1868     case TARGET_NR_stat:
1869         ret = get_errno(stat(path((const char *)arg1), &st));
1870         goto do_stat;
1871     case TARGET_NR_lstat:
1872         ret = get_errno(lstat(path((const char *)arg1), &st));
1873         goto do_stat;
1874     case TARGET_NR_fstat:
1875         {
1876             ret = get_errno(fstat(arg1, &st));
1877         do_stat:
1878             if (!is_error(ret)) {
1879                 struct target_stat *target_st = (void *)arg2;
1880                 target_st->st_dev = tswap16(st.st_dev);
1881                 target_st->st_ino = tswapl(st.st_ino);
1882                 target_st->st_mode = tswap16(st.st_mode);
1883                 target_st->st_nlink = tswap16(st.st_nlink);
1884                 target_st->st_uid = tswap16(st.st_uid);
1885                 target_st->st_gid = tswap16(st.st_gid);
1886                 target_st->st_rdev = tswap16(st.st_rdev);
1887                 target_st->st_size = tswapl(st.st_size);
1888                 target_st->st_blksize = tswapl(st.st_blksize);
1889                 target_st->st_blocks = tswapl(st.st_blocks);
1890                 target_st->target_st_atime = tswapl(st.st_atime);
1891                 target_st->target_st_mtime = tswapl(st.st_mtime);
1892                 target_st->target_st_ctime = tswapl(st.st_ctime);
1893             }
1894         }
1895         break;
1896     case TARGET_NR_olduname:
1897         goto unimplemented;
1898     case TARGET_NR_iopl:
1899         goto unimplemented;
1900     case TARGET_NR_vhangup:
1901         ret = get_errno(vhangup());
1902         break;
1903     case TARGET_NR_idle:
1904         goto unimplemented;
1905     case TARGET_NR_wait4:
1906         {
1907             int status;
1908             target_long *status_ptr = (void *)arg2;
1909             struct rusage rusage, *rusage_ptr;
1910             struct target_rusage *target_rusage = (void *)arg4;
1911             if (target_rusage)
1912                 rusage_ptr = &rusage;
1913             else
1914                 rusage_ptr = NULL;
1915             ret = get_errno(wait4(arg1, &status, arg3, rusage_ptr));
1916             if (!is_error(ret)) {
1917                 if (status_ptr)
1918                     *status_ptr = tswap32(status);
1919                 if (target_rusage) {
1920                     host_to_target_rusage(target_rusage, &rusage);
1921                 }
1922             }
1923         }
1924         break;
1925     case TARGET_NR_swapoff:
1926         ret = get_errno(swapoff((const char *)arg1));
1927         break;
1928     case TARGET_NR_sysinfo:
1929         goto unimplemented;
1930     case TARGET_NR_ipc:
1931         goto unimplemented;
1932     case TARGET_NR_fsync:
1933         ret = get_errno(fsync(arg1));
1934         break;
1935     case TARGET_NR_clone:
1936         ret = get_errno(do_fork(cpu_env, arg1, arg2));
1937         break;
1938 #ifdef __NR_exit_group
1939         /* new thread calls */
1940     case TARGET_NR_exit_group:
1941         ret = get_errno(exit_group(arg1));
1942         break;
1943 #endif
1944     case TARGET_NR_setdomainname:
1945         ret = get_errno(setdomainname((const char *)arg1, arg2));
1946         break;
1947     case TARGET_NR_uname:
1948         /* no need to transcode because we use the linux syscall */
1949         ret = get_errno(sys_uname((struct new_utsname *)arg1));
1950         break;
1951 #ifdef TARGET_I386
1952     case TARGET_NR_modify_ldt:
1953         ret = get_errno(do_modify_ldt(cpu_env, arg1, (void *)arg2, arg3));
1954         break;
1955     case TARGET_NR_vm86old:
1956         goto unimplemented;
1957     case TARGET_NR_vm86:
1958         ret = do_vm86(cpu_env, arg1, (void *)arg2);
1959         break;
1960 #endif
1961     case TARGET_NR_adjtimex:
1962         goto unimplemented;
1963     case TARGET_NR_create_module:
1964     case TARGET_NR_init_module:
1965     case TARGET_NR_delete_module:
1966     case TARGET_NR_get_kernel_syms:
1967         goto unimplemented;
1968     case TARGET_NR_quotactl:
1969         goto unimplemented;
1970     case TARGET_NR_getpgid:
1971         ret = get_errno(getpgid(arg1));
1972         break;
1973     case TARGET_NR_fchdir:
1974         ret = get_errno(fchdir(arg1));
1975         break;
1976     case TARGET_NR_bdflush:
1977         goto unimplemented;
1978     case TARGET_NR_sysfs:
1979         goto unimplemented;
1980     case TARGET_NR_personality:
1981         ret = get_errno(personality(arg1));
1982         break;
1983     case TARGET_NR_afs_syscall:
1984         goto unimplemented;
1985     case TARGET_NR_setfsuid:
1986         ret = get_errno(setfsuid(arg1));
1987         break;
1988     case TARGET_NR_setfsgid:
1989         ret = get_errno(setfsgid(arg1));
1990         break;
1991     case TARGET_NR__llseek:
1992         {
1993             int64_t res;
1994             ret = get_errno(_llseek(arg1, arg2, arg3, &res, arg5));
1995             *(int64_t *)arg4 = tswap64(res);
1996         }
1997         break;
1998     case TARGET_NR_getdents:
1999 #if TARGET_LONG_SIZE != 4
2000 #error not supported
2001 #endif
2002         {
2003             struct dirent *dirp = (void *)arg2;
2004             long count = arg3;
2005
2006             ret = get_errno(sys_getdents(arg1, dirp, count));
2007             if (!is_error(ret)) {
2008                 struct dirent *de;
2009                 int len = ret;
2010                 int reclen;
2011                 de = dirp;
2012                 while (len > 0) {
2013                     reclen = de->d_reclen;
2014                     if (reclen > len)
2015                         break;
2016                     de->d_reclen = tswap16(reclen);
2017                     tswapls(&de->d_ino);
2018                     tswapls(&de->d_off);
2019                     de = (struct dirent *)((char *)de + reclen);
2020                     len -= reclen;
2021                 }
2022             }
2023         }
2024         break;
2025     case TARGET_NR_getdents64:
2026         {
2027             struct dirent64 *dirp = (void *)arg2;
2028             long count = arg3;
2029             ret = get_errno(sys_getdents64(arg1, dirp, count));
2030             if (!is_error(ret)) {
2031                 struct dirent64 *de;
2032                 int len = ret;
2033                 int reclen;
2034                 de = dirp;
2035                 while (len > 0) {
2036                     reclen = de->d_reclen;
2037                     if (reclen > len)
2038                         break;
2039                     de->d_reclen = tswap16(reclen);
2040                     tswap64s(&de->d_ino);
2041                     tswap64s(&de->d_off);
2042                     de = (struct dirent64 *)((char *)de + reclen);
2043                     len -= reclen;
2044                 }
2045             }
2046         }
2047         break;
2048     case TARGET_NR__newselect:
2049         ret = do_select(arg1, (void *)arg2, (void *)arg3, (void *)arg4,
2050                         (void *)arg5);
2051         break;
2052     case TARGET_NR_poll:
2053         {
2054             struct target_pollfd *target_pfd = (void *)arg1;
2055             unsigned int nfds = arg2;
2056             int timeout = arg3;
2057             struct pollfd *pfd;
2058             unsigned int i;
2059
2060             pfd = alloca(sizeof(struct pollfd) * nfds);
2061             for(i = 0; i < nfds; i++) {
2062                 pfd[i].fd = tswap32(target_pfd[i].fd);
2063                 pfd[i].events = tswap16(target_pfd[i].events);
2064             }
2065             ret = get_errno(poll(pfd, nfds, timeout));
2066             if (!is_error(ret)) {
2067                 for(i = 0; i < nfds; i++) {
2068                     target_pfd[i].revents = tswap16(pfd[i].revents);
2069                 }
2070             }
2071         }
2072         break;
2073     case TARGET_NR_flock:
2074         /* NOTE: the flock constant seems to be the same for every
2075            Linux platform */
2076         ret = get_errno(flock(arg1, arg2));
2077         break;
2078     case TARGET_NR_readv:
2079         {
2080             int count = arg3;
2081             int i;
2082             struct iovec *vec;
2083             struct target_iovec *target_vec = (void *)arg2;
2084
2085             vec = alloca(count * sizeof(struct iovec));
2086             for(i = 0;i < count; i++) {
2087                 vec[i].iov_base = (void *)tswapl(target_vec[i].iov_base);
2088                 vec[i].iov_len = tswapl(target_vec[i].iov_len);
2089             }
2090             ret = get_errno(readv(arg1, vec, count));
2091         }
2092         break;
2093     case TARGET_NR_writev:
2094         {
2095             int count = arg3;
2096             int i;
2097             struct iovec *vec;
2098             struct target_iovec *target_vec = (void *)arg2;
2099
2100             vec = alloca(count * sizeof(struct iovec));
2101             for(i = 0;i < count; i++) {
2102                 vec[i].iov_base = (void *)tswapl(target_vec[i].iov_base);
2103                 vec[i].iov_len = tswapl(target_vec[i].iov_len);
2104             }
2105             ret = get_errno(writev(arg1, vec, count));
2106         }
2107         break;
2108     case TARGET_NR_getsid:
2109         ret = get_errno(getsid(arg1));
2110         break;
2111     case TARGET_NR_fdatasync:
2112         ret = get_errno(fdatasync(arg1));
2113         break;
2114     case TARGET_NR__sysctl:
2115         goto unimplemented;
2116     case TARGET_NR_sched_setparam:
2117         {
2118             struct sched_param *target_schp = (void *)arg2;
2119             struct sched_param schp;
2120             schp.sched_priority = tswap32(target_schp->sched_priority);
2121             ret = get_errno(sched_setparam(arg1, &schp));
2122         }
2123         break;
2124     case TARGET_NR_sched_getparam:
2125         {
2126             struct sched_param *target_schp = (void *)arg2;
2127             struct sched_param schp;
2128             ret = get_errno(sched_getparam(arg1, &schp));
2129             if (!is_error(ret)) {
2130                 target_schp->sched_priority = tswap32(schp.sched_priority);
2131             }
2132         }
2133         break;
2134     case TARGET_NR_sched_setscheduler:
2135         {
2136             struct sched_param *target_schp = (void *)arg3;
2137             struct sched_param schp;
2138             schp.sched_priority = tswap32(target_schp->sched_priority);
2139             ret = get_errno(sched_setscheduler(arg1, arg2, &schp));
2140         }
2141         break;
2142     case TARGET_NR_sched_getscheduler:
2143         ret = get_errno(sched_getscheduler(arg1));
2144         break;
2145     case TARGET_NR_sched_yield:
2146         ret = get_errno(sched_yield());
2147         break;
2148     case TARGET_NR_sched_get_priority_max:
2149         ret = get_errno(sched_get_priority_max(arg1));
2150         break;
2151     case TARGET_NR_sched_get_priority_min:
2152         ret = get_errno(sched_get_priority_min(arg1));
2153         break;
2154     case TARGET_NR_sched_rr_get_interval:
2155         {
2156             struct target_timespec *target_ts = (void *)arg2;
2157             struct timespec ts;
2158             ret = get_errno(sched_rr_get_interval(arg1, &ts));
2159             if (!is_error(ret)) {
2160                 target_ts->tv_sec = tswapl(ts.tv_sec);
2161                 target_ts->tv_nsec = tswapl(ts.tv_nsec);
2162             }
2163         }
2164         break;
2165     case TARGET_NR_nanosleep:
2166         {
2167             struct target_timespec *target_req = (void *)arg1;
2168             struct target_timespec *target_rem = (void *)arg2;
2169             struct timespec req, rem;
2170             req.tv_sec = tswapl(target_req->tv_sec);
2171             req.tv_nsec = tswapl(target_req->tv_nsec);
2172             ret = get_errno(nanosleep(&req, &rem));
2173             if (target_rem) {
2174                 target_rem->tv_sec = tswapl(rem.tv_sec);
2175                 target_rem->tv_nsec = tswapl(rem.tv_nsec);
2176             }
2177         }
2178         break;
2179     case TARGET_NR_setresuid:
2180         ret = get_errno(setresuid(low2highuid(arg1),
2181                                   low2highuid(arg2),
2182                                   low2highuid(arg3)));
2183         break;
2184     case TARGET_NR_getresuid:
2185         {
2186             int ruid, euid, suid;
2187             ret = get_errno(getresuid(&ruid, &euid, &suid));
2188             if (!is_error(ret)) {
2189                 *(uint16_t *)arg1 = tswap16(high2lowuid(ruid));
2190                 *(uint16_t *)arg2 = tswap16(high2lowuid(euid));
2191                 *(uint16_t *)arg3 = tswap16(high2lowuid(suid));
2192             }
2193         }
2194         break;
2195     case TARGET_NR_setresgid:
2196         ret = get_errno(setresgid(low2highgid(arg1),
2197                                   low2highgid(arg2),
2198                                   low2highgid(arg3)));
2199         break;
2200     case TARGET_NR_getresgid:
2201         {
2202             int rgid, egid, sgid;
2203             ret = get_errno(getresgid(&rgid, &egid, &sgid));
2204             if (!is_error(ret)) {
2205                 *(uint16_t *)arg1 = high2lowgid(tswap16(rgid));
2206                 *(uint16_t *)arg2 = high2lowgid(tswap16(egid));
2207                 *(uint16_t *)arg3 = high2lowgid(tswap16(sgid));
2208             }
2209         }
2210         break;
2211     case TARGET_NR_query_module:
2212         goto unimplemented;
2213     case TARGET_NR_nfsservctl:
2214         goto unimplemented;
2215     case TARGET_NR_prctl:
2216         goto unimplemented;
2217     case TARGET_NR_pread:
2218         page_unprotect_range((void *)arg2, arg3);
2219         ret = get_errno(pread(arg1, (void *)arg2, arg3, arg4));
2220         break;
2221     case TARGET_NR_pwrite:
2222         ret = get_errno(pwrite(arg1, (void *)arg2, arg3, arg4));
2223         break;
2224     case TARGET_NR_chown:
2225         ret = get_errno(chown((const char *)arg1, arg2, arg3));
2226         break;
2227     case TARGET_NR_getcwd:
2228         ret = get_errno(sys_getcwd1((char *)arg1, arg2));
2229         break;
2230     case TARGET_NR_capget:
2231         goto unimplemented;
2232     case TARGET_NR_capset:
2233         goto unimplemented;
2234     case TARGET_NR_sigaltstack:
2235         goto unimplemented;
2236     case TARGET_NR_sendfile:
2237         goto unimplemented;
2238     case TARGET_NR_getpmsg:
2239         goto unimplemented;
2240     case TARGET_NR_putpmsg:
2241         goto unimplemented;
2242     case TARGET_NR_vfork:
2243         ret = get_errno(do_fork(cpu_env, CLONE_VFORK | CLONE_VM | SIGCHLD, 0));
2244         break;
2245     case TARGET_NR_ugetrlimit:
2246     {
2247         struct rlimit rlim;
2248         ret = get_errno(getrlimit(arg1, &rlim));
2249         if (!is_error(ret)) {
2250             struct target_rlimit *target_rlim = (void *)arg2;
2251             target_rlim->rlim_cur = tswapl(rlim.rlim_cur);
2252             target_rlim->rlim_max = tswapl(rlim.rlim_max);
2253         }
2254         break;
2255     }
2256     case TARGET_NR_truncate64:
2257         goto unimplemented;
2258     case TARGET_NR_ftruncate64:
2259         goto unimplemented;
2260     case TARGET_NR_stat64:
2261         ret = get_errno(stat(path((const char *)arg1), &st));
2262         goto do_stat64;
2263     case TARGET_NR_lstat64:
2264         ret = get_errno(lstat(path((const char *)arg1), &st));
2265         goto do_stat64;
2266     case TARGET_NR_fstat64:
2267         {
2268             ret = get_errno(fstat(arg1, &st));
2269         do_stat64:
2270             if (!is_error(ret)) {
2271                 struct target_stat64 *target_st = (void *)arg2;
2272                 memset(target_st, 0, sizeof(struct target_stat64));
2273                 target_st->st_dev = tswap16(st.st_dev);
2274                 target_st->st_ino = tswap64(st.st_ino);
2275 #ifdef TARGET_STAT64_HAS_BROKEN_ST_INO
2276                 target_st->__st_ino = tswapl(st.st_ino);
2277 #endif
2278                 target_st->st_mode = tswap32(st.st_mode);
2279                 target_st->st_nlink = tswap32(st.st_nlink);
2280                 target_st->st_uid = tswapl(st.st_uid);
2281                 target_st->st_gid = tswapl(st.st_gid);
2282                 target_st->st_rdev = tswap16(st.st_rdev);
2283                 /* XXX: better use of kernel struct */
2284                 target_st->st_size = tswap64(st.st_size);
2285                 target_st->st_blksize = tswapl(st.st_blksize);
2286                 target_st->st_blocks = tswapl(st.st_blocks);
2287                 target_st->target_st_atime = tswapl(st.st_atime);
2288                 target_st->target_st_mtime = tswapl(st.st_mtime);
2289                 target_st->target_st_ctime = tswapl(st.st_ctime);
2290             }
2291         }
2292         break;
2293
2294     case TARGET_NR_lchown32:
2295         ret = get_errno(lchown((const char *)arg1, arg2, arg3));
2296         break;
2297     case TARGET_NR_getuid32:
2298         ret = get_errno(getuid());
2299         break;
2300     case TARGET_NR_getgid32:
2301         ret = get_errno(getgid());
2302         break;
2303     case TARGET_NR_geteuid32:
2304         ret = get_errno(geteuid());
2305         break;
2306     case TARGET_NR_getegid32:
2307         ret = get_errno(getegid());
2308         break;
2309     case TARGET_NR_setreuid32:
2310         ret = get_errno(setreuid(arg1, arg2));
2311         break;
2312     case TARGET_NR_setregid32:
2313         ret = get_errno(setregid(arg1, arg2));
2314         break;
2315     case TARGET_NR_getgroups32:
2316         goto unimplemented;
2317     case TARGET_NR_setgroups32:
2318         goto unimplemented;
2319     case TARGET_NR_fchown32:
2320         ret = get_errno(fchown(arg1, arg2, arg3));
2321         break;
2322     case TARGET_NR_setresuid32:
2323         ret = get_errno(setresuid(arg1, arg2, arg3));
2324         break;
2325     case TARGET_NR_getresuid32:
2326         {
2327             int ruid, euid, suid;
2328             ret = get_errno(getresuid(&ruid, &euid, &suid));
2329             if (!is_error(ret)) {
2330                 *(uint32_t *)arg1 = tswap32(ruid);
2331                 *(uint32_t *)arg2 = tswap32(euid);
2332                 *(uint32_t *)arg3 = tswap32(suid);
2333             }
2334         }
2335         break;
2336     case TARGET_NR_setresgid32:
2337         ret = get_errno(setresgid(arg1, arg2, arg3));
2338         break;
2339     case TARGET_NR_getresgid32:
2340         {
2341             int rgid, egid, sgid;
2342             ret = get_errno(getresgid(&rgid, &egid, &sgid));
2343             if (!is_error(ret)) {
2344                 *(uint32_t *)arg1 = tswap32(rgid);
2345                 *(uint32_t *)arg2 = tswap32(egid);
2346                 *(uint32_t *)arg3 = tswap32(sgid);
2347             }
2348         }
2349         break;
2350     case TARGET_NR_chown32:
2351         ret = get_errno(chown((const char *)arg1, arg2, arg3));
2352         break;
2353     case TARGET_NR_setuid32:
2354         ret = get_errno(setuid(arg1));
2355         break;
2356     case TARGET_NR_setgid32:
2357         ret = get_errno(setgid(arg1));
2358         break;
2359     case TARGET_NR_setfsuid32:
2360         ret = get_errno(setfsuid(arg1));
2361         break;
2362     case TARGET_NR_setfsgid32:
2363         ret = get_errno(setfsgid(arg1));
2364         break;
2365     case TARGET_NR_pivot_root:
2366         goto unimplemented;
2367     case TARGET_NR_mincore:
2368         goto unimplemented;
2369     case TARGET_NR_madvise:
2370         goto unimplemented;
2371 #if TARGET_LONG_BITS == 32
2372     case TARGET_NR_fcntl64:
2373     {
2374         struct flock64 fl;
2375         struct target_flock64 *target_fl = (void *)arg3;
2376
2377         switch(arg2) {
2378         case F_GETLK64:
2379             ret = get_errno(fcntl(arg1, arg2, &fl));
2380             if (ret == 0) {
2381                 target_fl->l_type = tswap16(fl.l_type);
2382                 target_fl->l_whence = tswap16(fl.l_whence);
2383                 target_fl->l_start = tswap64(fl.l_start);
2384                 target_fl->l_len = tswap64(fl.l_len);
2385                 target_fl->l_pid = tswapl(fl.l_pid);
2386             }
2387             break;
2388
2389         case F_SETLK64:
2390         case F_SETLKW64:
2391             fl.l_type = tswap16(target_fl->l_type);
2392             fl.l_whence = tswap16(target_fl->l_whence);
2393             fl.l_start = tswap64(target_fl->l_start);
2394             fl.l_len = tswap64(target_fl->l_len);
2395             fl.l_pid = tswapl(target_fl->l_pid);
2396             ret = get_errno(fcntl(arg1, arg2, &fl));
2397             break;
2398         default:
2399             ret = get_errno(do_fcntl(arg1, arg2, arg3));
2400             break;
2401         }
2402         break;
2403     }
2404 #endif
2405     case TARGET_NR_security:
2406         goto unimplemented;
2407     case TARGET_NR_gettid:
2408         ret = get_errno(gettid());
2409         break;
2410     case TARGET_NR_readahead:
2411         goto unimplemented;
2412     case TARGET_NR_setxattr:
2413     case TARGET_NR_lsetxattr:
2414     case TARGET_NR_fsetxattr:
2415     case TARGET_NR_getxattr:
2416     case TARGET_NR_lgetxattr:
2417     case TARGET_NR_fgetxattr:
2418     case TARGET_NR_listxattr:
2419     case TARGET_NR_llistxattr:
2420     case TARGET_NR_flistxattr:
2421     case TARGET_NR_removexattr:
2422     case TARGET_NR_lremovexattr:
2423     case TARGET_NR_fremovexattr:
2424         goto unimplemented_nowarn;
2425     case TARGET_NR_set_thread_area:
2426     case TARGET_NR_get_thread_area:
2427         goto unimplemented_nowarn;
2428     default:
2429     unimplemented:
2430         gemu_log("qemu: Unsupported syscall: %d\n", num);
2431     unimplemented_nowarn:
2432         ret = -ENOSYS;
2433         break;
2434     }
2435  fail:
2436     return ret;
2437 }
2438