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 #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 #define __NR_sys_uname __NR_uname
  72 #define __NR_sys_getcwd1 __NR_getcwd
  73 #define __NR_sys_statfs __NR_statfs
  74 #define __NR_sys_fstatfs __NR_fstatfs
  75 #define __NR_sys_getdents __NR_getdents
  76 #define __NR_sys_getdents64 __NR_getdents64
  77 #define __NR_sys_rt_sigqueueinfo __NR_rt_sigqueueinfo
  78
  79 #if defined(__alpha__) || defined (__ia64__)
  80 #define __NR__llseek __NR_lseek
  81 #endif
  82
  83 #ifdef __NR_gettid
  84 _syscall0(int, gettid)
  85 #else
  86 static int gettid(void) {
  87     return -ENOSYS;
  88 }
  89 #endif
  90 _syscall1(int,sys_uname,struct new_utsname *,buf)
  91 _syscall2(int,sys_getcwd1,char *,buf,size_t,size)
  92 _syscall3(int, sys_getdents, uint, fd, struct dirent *, dirp, uint, count);
  93 _syscall3(int, sys_getdents64, uint, fd, struct dirent64 *, dirp, uint, count);
  94 _syscall5(int, _llseek,  uint,  fd, ulong, hi, ulong, lo,
  95           loff_t *, res, uint, wh);
  96 _syscall2(int,sys_statfs,const char *,path,struct kernel_statfs *,buf)
  97 _syscall2(int,sys_fstatfs,int,fd,struct kernel_statfs *,buf)
  98 _syscall3(int,sys_rt_sigqueueinfo,int,pid,int,sig,siginfo_t *,uinfo)
  99 #ifdef __NR_exit_group
 100 _syscall1(int,exit_group,int,error_code)
 101 #endif
 102
 103 extern int personality(int);
 104 extern int flock(int, int);
 105 extern int setfsuid(int);
 106 extern int setfsgid(int);
 107 extern int setresuid(uid_t, uid_t, uid_t);
 108 extern int getresuid(uid_t *, uid_t *, uid_t *);
 109 extern int setresgid(gid_t, gid_t, gid_t);
 110 extern int getresgid(gid_t *, gid_t *, gid_t *);
 111 extern int setgroups(int, gid_t *);
 112
 113 static inline long get_errno(long ret)
 114 {
 115     if (ret == -1)
 116         return -errno;
 117     else
 118         return ret;
 119 }
 120
 121 static inline int is_error(long ret)
 122 {
 123     return (unsigned long)ret >= (unsigned long)(-4096);
 124 }
 125
 126 static char *target_brk;
 127 static char *target_original_brk;
 128
 129 void target_set_brk(char *new_brk)
 130 {
 131     target_brk = new_brk;
 132     target_original_brk = new_brk;
 133 }
 134
 135 static long do_brk(char *new_brk)
 136 {
 137     char *brk_page;
 138     long mapped_addr;
 139     int new_alloc_size;
 140
 141     if (!new_brk)
 142         return (long)target_brk;
 143     if (new_brk < target_original_brk)
 144         return -ENOMEM;
 145
 146     brk_page = (char *)HOST_PAGE_ALIGN((unsigned long)target_brk);
 147
 148     /* If the new brk is less than this, set it and we're done... */
 149     if (new_brk < brk_page) {
 150         target_brk = new_brk;
 151         return (long)target_brk;
 152     }
 153
 154     /* We need to allocate more memory after the brk... */
 155     new_alloc_size = HOST_PAGE_ALIGN(new_brk - brk_page + 1);
 156     mapped_addr = get_errno(target_mmap((unsigned long)brk_page, new_alloc_size,
 157                                         PROT_READ|PROT_WRITE,
 158                                         MAP_ANON|MAP_FIXED|MAP_PRIVATE, 0, 0));
 159     if (is_error(mapped_addr)) {
 160         return mapped_addr;
 161     } else {
 162         target_brk = new_brk;
 163         return (long)target_brk;
 164     }
 165 }
 166
 167 static inline fd_set *target_to_host_fds(fd_set *fds,
 168                                          target_long *target_fds, int n)
 169 {
 170 #if !defined(BSWAP_NEEDED) && !defined(WORDS_BIGENDIAN)
 171     return (fd_set *)target_fds;
 172 #else
 173     int i, b;
 174     if (target_fds) {
 175         FD_ZERO(fds);
 176         for(i = 0;i < n; i++) {
 177             b = (tswapl(target_fds[i / TARGET_LONG_BITS]) >>
 178                  (i & (TARGET_LONG_BITS - 1))) & 1;
 179             if (b)
 180                 FD_SET(i, fds);
 181         }
 182         return fds;
 183     } else {
 184         return NULL;
 185     }
 186 #endif
 187 }
 188
 189 static inline void host_to_target_fds(target_long *target_fds,
 190                                       fd_set *fds, int n)
 191 {
 192 #if !defined(BSWAP_NEEDED) && !defined(WORDS_BIGENDIAN)
 193     /* nothing to do */
 194 #else
 195     int i, nw, j, k;
 196     target_long v;
 197
 198     if (target_fds) {
 199         nw = n / TARGET_LONG_BITS;
 200         k = 0;
 201         for(i = 0;i < nw; i++) {
 202             v = 0;
 203             for(j = 0; j < TARGET_LONG_BITS; j++) {
 204                 v |= ((FD_ISSET(k, fds) != 0) << j);
 205                 k++;
 206             }
 207             target_fds[i] = tswapl(v);
 208         }
 209     }
 210 #endif
 211 }
 212
 213 static inline void host_to_target_rusage(struct target_rusage *target_rusage,
 214                                          const struct rusage *rusage)
 215 {
 216     target_rusage->ru_utime.tv_sec = tswapl(rusage->ru_utime.tv_sec);
 217     target_rusage->ru_utime.tv_usec = tswapl(rusage->ru_utime.tv_usec);
 218     target_rusage->ru_stime.tv_sec = tswapl(rusage->ru_stime.tv_sec);
 219     target_rusage->ru_stime.tv_usec = tswapl(rusage->ru_stime.tv_usec);
 220     target_rusage->ru_maxrss = tswapl(rusage->ru_maxrss);
 221     target_rusage->ru_ixrss = tswapl(rusage->ru_ixrss);
 222     target_rusage->ru_idrss = tswapl(rusage->ru_idrss);
 223     target_rusage->ru_isrss = tswapl(rusage->ru_isrss);
 224     target_rusage->ru_minflt = tswapl(rusage->ru_minflt);
 225     target_rusage->ru_majflt = tswapl(rusage->ru_majflt);
 226     target_rusage->ru_nswap = tswapl(rusage->ru_nswap);
 227     target_rusage->ru_inblock = tswapl(rusage->ru_inblock);
 228     target_rusage->ru_oublock = tswapl(rusage->ru_oublock);
 229     target_rusage->ru_msgsnd = tswapl(rusage->ru_msgsnd);
 230     target_rusage->ru_msgrcv = tswapl(rusage->ru_msgrcv);
 231     target_rusage->ru_nsignals = tswapl(rusage->ru_nsignals);
 232     target_rusage->ru_nvcsw = tswapl(rusage->ru_nvcsw);
 233     target_rusage->ru_nivcsw = tswapl(rusage->ru_nivcsw);
 234 }
 235
 236 static inline void target_to_host_timeval(struct timeval *tv,
 237                                           const struct target_timeval *target_tv)
 238 {
 239     tv->tv_sec = tswapl(target_tv->tv_sec);
 240     tv->tv_usec = tswapl(target_tv->tv_usec);
 241 }
 242
 243 static inline void host_to_target_timeval(struct target_timeval *target_tv,
 244                                           const struct timeval *tv)
 245 {
 246     target_tv->tv_sec = tswapl(tv->tv_sec);
 247     target_tv->tv_usec = tswapl(tv->tv_usec);
 248 }
 249
 250
 251 static long do_select(long n,
 252                       target_long *target_rfds, target_long *target_wfds,
 253                       target_long *target_efds, struct target_timeval *target_tv)
 254 {
 255     fd_set rfds, wfds, efds;
 256     fd_set *rfds_ptr, *wfds_ptr, *efds_ptr;
 257     struct timeval tv, *tv_ptr;
 258     long ret;
 259
 260     rfds_ptr = target_to_host_fds(&rfds, target_rfds, n);
 261     wfds_ptr = target_to_host_fds(&wfds, target_wfds, n);
 262     efds_ptr = target_to_host_fds(&efds, target_efds, n);
 263
 264     if (target_tv) {
 265         target_to_host_timeval(&tv, target_tv);
 266         tv_ptr = &tv;
 267     } else {
 268         tv_ptr = NULL;
 269     }
 270     ret = get_errno(select(n, rfds_ptr, wfds_ptr, efds_ptr, tv_ptr));
 271     if (!is_error(ret)) {
 272         host_to_target_fds(target_rfds, rfds_ptr, n);
 273         host_to_target_fds(target_wfds, wfds_ptr, n);
 274         host_to_target_fds(target_efds, efds_ptr, n);
 275
 276         if (target_tv) {
 277             host_to_target_timeval(target_tv, &tv);
 278         }
 279     }
 280     return ret;
 281 }
 282
 283 static inline void target_to_host_sockaddr(struct sockaddr *addr,
 284                                            struct target_sockaddr *target_addr,
 285                                            socklen_t len)
 286 {
 287     memcpy(addr, target_addr, len);
 288     addr->sa_family = tswap16(target_addr->sa_family);
 289 }
 290
 291 static inline void host_to_target_sockaddr(struct target_sockaddr *target_addr,
 292                                            struct sockaddr *addr,
 293                                            socklen_t len)
 294 {
 295     memcpy(target_addr, addr, len);
 296     target_addr->sa_family = tswap16(addr->sa_family);
 297 }
 298
 299 static inline void target_to_host_cmsg(struct msghdr *msgh,
 300                                        struct target_msghdr *target_msgh)
 301 {
 302     struct cmsghdr *cmsg = CMSG_FIRSTHDR(msgh);
 303     struct target_cmsghdr *target_cmsg = TARGET_CMSG_FIRSTHDR(target_msgh);
 304     socklen_t space = 0;
 305
 306     while (cmsg && target_cmsg) {
 307         void *data = CMSG_DATA(cmsg);
 308         void *target_data = TARGET_CMSG_DATA(target_cmsg);
 309
 310         int len = tswapl(target_cmsg->cmsg_len)
 311                   - TARGET_CMSG_ALIGN(sizeof (struct target_cmsghdr));
 312
 313         space += CMSG_SPACE(len);
 314         if (space > msgh->msg_controllen) {
 315             space -= CMSG_SPACE(len);
 316             gemu_log("Host cmsg overflow");
 317             break;
 318         }
 319
 320         cmsg->cmsg_level = tswap32(target_cmsg->cmsg_level);
 321         cmsg->cmsg_type = tswap32(target_cmsg->cmsg_type);
 322         cmsg->cmsg_len = CMSG_LEN(len);
 323
 324         if (cmsg->cmsg_level != SOL_SOCKET || cmsg->cmsg_type != SCM_RIGHTS) {
 325             gemu_log("Unsupported ancillary data: %d/%d\n", cmsg->cmsg_level, cmsg->cmsg_type);
 326             memcpy(data, target_data, len);
 327         } else {
 328             int *fd = (int *)data;
 329             int *target_fd = (int *)target_data;
 330             int i, numfds = len / sizeof(int);
 331
 332             for (i = 0; i < numfds; i++)
 333                 fd[i] = tswap32(target_fd[i]);
 334         }
 335
 336         cmsg = CMSG_NXTHDR(msgh, cmsg);
 337         target_cmsg = TARGET_CMSG_NXTHDR(target_msgh, target_cmsg);
 338     }
 339
 340     msgh->msg_controllen = space;
 341 }
 342
 343 static inline void host_to_target_cmsg(struct target_msghdr *target_msgh,
 344                                        struct msghdr *msgh)
 345 {
 346     struct cmsghdr *cmsg = CMSG_FIRSTHDR(msgh);
 347     struct target_cmsghdr *target_cmsg = TARGET_CMSG_FIRSTHDR(target_msgh);
 348     socklen_t space = 0;
 349
 350     while (cmsg && target_cmsg) {
 351         void *data = CMSG_DATA(cmsg);
 352         void *target_data = TARGET_CMSG_DATA(target_cmsg);
 353
 354         int len = cmsg->cmsg_len - CMSG_ALIGN(sizeof (struct cmsghdr));
 355
 356         space += TARGET_CMSG_SPACE(len);
 357         if (space > tswapl(target_msgh->msg_controllen)) {
 358             space -= TARGET_CMSG_SPACE(len);
 359             gemu_log("Target cmsg overflow");
 360             break;
 361         }
 362
 363         target_cmsg->cmsg_level = tswap32(cmsg->cmsg_level);
 364         target_cmsg->cmsg_type = tswap32(cmsg->cmsg_type);
 365         target_cmsg->cmsg_len = tswapl(TARGET_CMSG_LEN(len));
 366
 367         if (cmsg->cmsg_level != SOL_SOCKET || cmsg->cmsg_type != SCM_RIGHTS) {
 368             gemu_log("Unsupported ancillary data: %d/%d\n", cmsg->cmsg_level, cmsg->cmsg_type);
 369             memcpy(target_data, data, len);
 370         } else {
 371             int *fd = (int *)data;
 372             int *target_fd = (int *)target_data;
 373             int i, numfds = len / sizeof(int);
 374
 375             for (i = 0; i < numfds; i++)
 376                 target_fd[i] = tswap32(fd[i]);
 377         }
 378
 379         cmsg = CMSG_NXTHDR(msgh, cmsg);
 380         target_cmsg = TARGET_CMSG_NXTHDR(target_msgh, target_cmsg);
 381     }
 382
 383     msgh->msg_controllen = tswapl(space);
 384 }
 385
 386 static long do_setsockopt(int sockfd, int level, int optname,
 387                           void *optval, socklen_t optlen)
 388 {
 389     if (level == SOL_TCP) {
 390         /* TCP options all take an 'int' value.  */
 391         int val;
 392
 393         if (optlen < sizeof(uint32_t))
 394             return -EINVAL;
 395
 396         val = tswap32(*(uint32_t *)optval);
 397         return get_errno(setsockopt(sockfd, level, optname, &val, sizeof(val)));
 398     }
 399
 400     else if (level != SOL_SOCKET) {
 401         gemu_log("Unsupported setsockopt level: %d\n", level);
 402         return -ENOSYS;
 403     }
 404
 405     switch (optname) {
 406     /* Options with 'int' argument.  */
 407     case SO_DEBUG:
 408     case SO_REUSEADDR:
 409     case SO_TYPE:
 410     case SO_ERROR:
 411     case SO_DONTROUTE:
 412     case SO_BROADCAST:
 413     case SO_SNDBUF:
 414     case SO_RCVBUF:
 415     case SO_KEEPALIVE:
 416     case SO_OOBINLINE:
 417     case SO_NO_CHECK:
 418     case SO_PRIORITY:
 419     case SO_BSDCOMPAT:
 420     case SO_PASSCRED:
 421     case SO_TIMESTAMP:
 422     case SO_RCVLOWAT:
 423     case SO_RCVTIMEO:
 424     case SO_SNDTIMEO:
 425     {
 426         int val;
 427         if (optlen < sizeof(uint32_t))
 428             return -EINVAL;
 429         val = tswap32(*(uint32_t *)optval);
 430         return get_errno(setsockopt(sockfd, level, optname, &val, sizeof(val)));
 431     }
 432
 433     default:
 434         gemu_log("Unsupported setsockopt SOL_SOCKET option: %d\n", optname);
 435         return -ENOSYS;
 436     }
 437 }
 438
 439 static long do_getsockopt(int sockfd, int level, int optname,
 440                           void *optval, socklen_t *optlen)
 441 {
 442     gemu_log("getsockopt not yet supported\n");
 443     return -ENOSYS;
 444 }
 445
 446 static long do_socketcall(int num, int32_t *vptr)
 447 {
 448     long ret;
 449
 450     switch(num) {
 451     case SOCKOP_socket:
 452         {
 453             int domain = tswap32(vptr[0]);
 454             int type = tswap32(vptr[1]);
 455             int protocol = tswap32(vptr[2]);
 456
 457             ret = get_errno(socket(domain, type, protocol));
 458         }
 459         break;
 460     case SOCKOP_bind:
 461         {
 462             int sockfd = tswap32(vptr[0]);
 463             void *target_addr = (void *)tswap32(vptr[1]);
 464             socklen_t addrlen = tswap32(vptr[2]);
 465             void *addr = alloca(addrlen);
 466
 467             target_to_host_sockaddr(addr, target_addr, addrlen);
 468             ret = get_errno(bind(sockfd, addr, addrlen));
 469         }
 470         break;
 471     case SOCKOP_connect:
 472         {
 473             int sockfd = tswap32(vptr[0]);
 474             void *target_addr = (void *)tswap32(vptr[1]);
 475             socklen_t addrlen = tswap32(vptr[2]);
 476             void *addr = alloca(addrlen);
 477
 478             target_to_host_sockaddr(addr, target_addr, addrlen);
 479             ret = get_errno(connect(sockfd, addr, addrlen));
 480         }
 481         break;
 482     case SOCKOP_listen:
 483         {
 484             int sockfd = tswap32(vptr[0]);
 485             int backlog = tswap32(vptr[1]);
 486
 487             ret = get_errno(listen(sockfd, backlog));
 488         }
 489         break;
 490     case SOCKOP_accept:
 491         {
 492             int sockfd = tswap32(vptr[0]);
 493             void *target_addr = (void *)tswap32(vptr[1]);
 494             uint32_t *target_addrlen = (void *)tswap32(vptr[2]);
 495             socklen_t addrlen = tswap32(*target_addrlen);
 496             void *addr = alloca(addrlen);
 497
 498             ret = get_errno(accept(sockfd, addr, &addrlen));
 499             if (!is_error(ret)) {
 500                 host_to_target_sockaddr(target_addr, addr, addrlen);
 501                 *target_addrlen = tswap32(addrlen);
 502             }
 503         }
 504         break;
 505     case SOCKOP_getsockname:
 506         {
 507             int sockfd = tswap32(vptr[0]);
 508             void *target_addr = (void *)tswap32(vptr[1]);
 509             uint32_t *target_addrlen = (void *)tswap32(vptr[2]);
 510             socklen_t addrlen = tswap32(*target_addrlen);
 511             void *addr = alloca(addrlen);
 512
 513             ret = get_errno(getsockname(sockfd, addr, &addrlen));
 514             if (!is_error(ret)) {
 515                 host_to_target_sockaddr(target_addr, addr, addrlen);
 516                 *target_addrlen = tswap32(addrlen);
 517             }
 518         }
 519         break;
 520     case SOCKOP_getpeername:
 521         {
 522             int sockfd = tswap32(vptr[0]);
 523             void *target_addr = (void *)tswap32(vptr[1]);
 524             uint32_t *target_addrlen = (void *)tswap32(vptr[2]);
 525             socklen_t addrlen = tswap32(*target_addrlen);
 526             void *addr = alloca(addrlen);
 527
 528             ret = get_errno(getpeername(sockfd, addr, &addrlen));
 529             if (!is_error(ret)) {
 530                 host_to_target_sockaddr(target_addr, addr, addrlen);
 531                 *target_addrlen = tswap32(addrlen);
 532             }
 533         }
 534         break;
 535     case SOCKOP_socketpair:
 536         {
 537             int domain = tswap32(vptr[0]);
 538             int type = tswap32(vptr[1]);
 539             int protocol = tswap32(vptr[2]);
 540             int32_t *target_tab = (void *)tswap32(vptr[3]);
 541             int tab[2];
 542
 543             ret = get_errno(socketpair(domain, type, protocol, tab));
 544             if (!is_error(ret)) {
 545                 target_tab[0] = tswap32(tab[0]);
 546                 target_tab[1] = tswap32(tab[1]);
 547             }
 548         }
 549         break;
 550     case SOCKOP_send:
 551         {
 552             int sockfd = tswap32(vptr[0]);
 553             void *msg = (void *)tswap32(vptr[1]);
 554             size_t len = tswap32(vptr[2]);
 555             int flags = tswap32(vptr[3]);
 556
 557             ret = get_errno(send(sockfd, msg, len, flags));
 558         }
 559         break;
 560     case SOCKOP_recv:
 561         {
 562             int sockfd = tswap32(vptr[0]);
 563             void *msg = (void *)tswap32(vptr[1]);
 564             size_t len = tswap32(vptr[2]);
 565             int flags = tswap32(vptr[3]);
 566
 567             ret = get_errno(recv(sockfd, msg, len, flags));
 568         }
 569         break;
 570     case SOCKOP_sendto:
 571         {
 572             int sockfd = tswap32(vptr[0]);
 573             void *msg = (void *)tswap32(vptr[1]);
 574             size_t len = tswap32(vptr[2]);
 575             int flags = tswap32(vptr[3]);
 576             void *target_addr = (void *)tswap32(vptr[4]);
 577             socklen_t addrlen = tswap32(vptr[5]);
 578             void *addr = alloca(addrlen);
 579
 580             target_to_host_sockaddr(addr, target_addr, addrlen);
 581             ret = get_errno(sendto(sockfd, msg, len, flags, addr, addrlen));
 582         }
 583         break;
 584     case SOCKOP_recvfrom:
 585         {
 586             int sockfd = tswap32(vptr[0]);
 587             void *msg = (void *)tswap32(vptr[1]);
 588             size_t len = tswap32(vptr[2]);
 589             int flags = tswap32(vptr[3]);
 590             void *target_addr = (void *)tswap32(vptr[4]);
 591             uint32_t *target_addrlen = (void *)tswap32(vptr[5]);
 592             socklen_t addrlen = tswap32(*target_addrlen);
 593             void *addr = alloca(addrlen);
 594
 595             ret = get_errno(recvfrom(sockfd, msg, len, flags, addr, &addrlen));
 596             if (!is_error(ret)) {
 597                 host_to_target_sockaddr(target_addr, addr, addrlen);
 598                 *target_addrlen = tswap32(addrlen);
 599             }
 600         }
 601         break;
 602     case SOCKOP_shutdown:
 603         {
 604             int sockfd = tswap32(vptr[0]);
 605             int how = tswap32(vptr[1]);
 606
 607             ret = get_errno(shutdown(sockfd, how));
 608         }
 609         break;
 610     case SOCKOP_sendmsg:
 611     case SOCKOP_recvmsg:
 612         {
 613             int fd;
 614             struct target_msghdr *msgp;
 615             struct msghdr msg;
 616             int flags, count, i;
 617             struct iovec *vec;
 618             struct target_iovec *target_vec;
 619
 620             msgp = (void *)tswap32(vptr[1]);
 621             msg.msg_name = (void *)tswapl(msgp->msg_name);
 622             msg.msg_namelen = tswapl(msgp->msg_namelen);
 623             msg.msg_controllen = 2 * tswapl(msgp->msg_controllen);
 624             msg.msg_control = alloca(msg.msg_controllen);
 625             msg.msg_flags = tswap32(msgp->msg_flags);
 626
 627             count = tswapl(msgp->msg_iovlen);
 628             vec = alloca(count * sizeof(struct iovec));
 629             target_vec = (void *)tswapl(msgp->msg_iov);
 630             for(i = 0;i < count; i++) {
 631                 vec[i].iov_base = (void *)tswapl(target_vec[i].iov_base);
 632                 vec[i].iov_len = tswapl(target_vec[i].iov_len);
 633             }
 634             msg.msg_iovlen = count;
 635             msg.msg_iov = vec;
 636
 637             fd = tswap32(vptr[0]);
 638             flags = tswap32(vptr[2]);
 639             if (num == SOCKOP_sendmsg) {
 640                 target_to_host_cmsg(&msg, msgp);
 641                 ret = get_errno(sendmsg(fd, &msg, flags));
 642             } else {
 643                 ret = get_errno(recvmsg(fd, &msg, flags));
 644                 if (!is_error(ret))
 645                   host_to_target_cmsg(msgp, &msg);
 646             }
 647         }
 648         break;
 649     case SOCKOP_setsockopt:
 650         {
 651             int sockfd = tswap32(vptr[0]);
 652             int level = tswap32(vptr[1]);
 653             int optname = tswap32(vptr[2]);
 654             void *optval = (void *)tswap32(vptr[3]);
 655             socklen_t optlen = tswap32(vptr[4]);
 656
 657             ret = do_setsockopt(sockfd, level, optname, optval, optlen);
 658         }
 659         break;
 660     case SOCKOP_getsockopt:
 661         {
 662             int sockfd = tswap32(vptr[0]);
 663             int level = tswap32(vptr[1]);
 664             int optname = tswap32(vptr[2]);
 665             void *optval = (void *)tswap32(vptr[3]);
 666             uint32_t *target_len = (void *)tswap32(vptr[4]);
 667             socklen_t optlen = tswap32(*target_len);
 668
 669             ret = do_getsockopt(sockfd, level, optname, optval, &optlen);
 670             if (!is_error(ret))
 671                 *target_len = tswap32(optlen);
 672         }
 673         break;
 674     default:
 675         gemu_log("Unsupported socketcall: %d\n", num);
 676         ret = -ENOSYS;
 677         break;
 678     }
 679     return ret;
 680 }
 681
 682 /* kernel structure types definitions */
 683 #define IFNAMSIZ        16
 684
 685 #define STRUCT(name, list...) STRUCT_ ## name,
 686 #define STRUCT_SPECIAL(name) STRUCT_ ## name,
 687 enum {
 688 #include "syscall_types.h"
 689 };
 690 #undef STRUCT
 691 #undef STRUCT_SPECIAL
 692
 693 #define STRUCT(name, list...) const argtype struct_ ## name ## _def[] = { list, TYPE_NULL };
 694 #define STRUCT_SPECIAL(name)
 695 #include "syscall_types.h"
 696 #undef STRUCT
 697 #undef STRUCT_SPECIAL
 698
 699 typedef struct IOCTLEntry {
 700     unsigned int target_cmd;
 701     unsigned int host_cmd;
 702     const char *name;
 703     int access;
 704     const argtype arg_type[5];
 705 } IOCTLEntry;
 706
 707 #define IOC_R 0x0001
 708 #define IOC_W 0x0002
 709 #define IOC_RW (IOC_R | IOC_W)
 710
 711 #define MAX_STRUCT_SIZE 4096
 712
 713 IOCTLEntry ioctl_entries[] = {
 714 #define IOCTL(cmd, access, types...) \
 715     { TARGET_ ## cmd, cmd, #cmd, access, { types } },
 716 #include "ioctls.h"
 717     { 0, 0, },
 718 };
 719
 720 static long do_ioctl(long fd, long cmd, long arg)
 721 {
 722     const IOCTLEntry *ie;
 723     const argtype *arg_type;
 724     long ret;
 725     uint8_t buf_temp[MAX_STRUCT_SIZE];
 726
 727     ie = ioctl_entries;
 728     for(;;) {
 729         if (ie->target_cmd == 0) {
 730             gemu_log("Unsupported ioctl: cmd=0x%04lx\n", cmd);
 731             return -ENOSYS;
 732         }
 733         if (ie->target_cmd == cmd)
 734             break;
 735         ie++;
 736     }
 737     arg_type = ie->arg_type;
 738 #if defined(DEBUG)
 739     gemu_log("ioctl: cmd=0x%04lx (%s)\n", cmd, ie->name);
 740 #endif
 741     switch(arg_type[0]) {
 742     case TYPE_NULL:
 743         /* no argument */
 744         ret = get_errno(ioctl(fd, ie->host_cmd));
 745         break;
 746     case TYPE_PTRVOID:
 747     case TYPE_INT:
 748         /* int argment */
 749         ret = get_errno(ioctl(fd, ie->host_cmd, arg));
 750         break;
 751     case TYPE_PTR:
 752         arg_type++;
 753         switch(ie->access) {
 754         case IOC_R:
 755             ret = get_errno(ioctl(fd, ie->host_cmd, buf_temp));
 756             if (!is_error(ret)) {
 757                 thunk_convert((void *)arg, buf_temp, arg_type, THUNK_TARGET);
 758             }
 759             break;
 760         case IOC_W:
 761             thunk_convert(buf_temp, (void *)arg, arg_type, THUNK_HOST);
 762             ret = get_errno(ioctl(fd, ie->host_cmd, buf_temp));
 763             break;
 764         default:
 765         case IOC_RW:
 766             thunk_convert(buf_temp, (void *)arg, arg_type, THUNK_HOST);
 767             ret = get_errno(ioctl(fd, ie->host_cmd, buf_temp));
 768             if (!is_error(ret)) {
 769                 thunk_convert((void *)arg, buf_temp, arg_type, THUNK_TARGET);
 770             }
 771             break;
 772         }
 773         break;
 774     default:
 775         gemu_log("Unsupported ioctl type: cmd=0x%04lx type=%d\n", cmd, arg_type[0]);
 776         ret = -ENOSYS;
 777         break;
 778     }
 779     return ret;
 780 }
 781
 782 bitmask_transtbl iflag_tbl[] = {
 783         { TARGET_IGNBRK, TARGET_IGNBRK, IGNBRK, IGNBRK },
 784         { TARGET_BRKINT, TARGET_BRKINT, BRKINT, BRKINT },
 785         { TARGET_IGNPAR, TARGET_IGNPAR, IGNPAR, IGNPAR },
 786         { TARGET_PARMRK, TARGET_PARMRK, PARMRK, PARMRK },
 787         { TARGET_INPCK, TARGET_INPCK, INPCK, INPCK },
 788         { TARGET_ISTRIP, TARGET_ISTRIP, ISTRIP, ISTRIP },
 789         { TARGET_INLCR, TARGET_INLCR, INLCR, INLCR },
 790         { TARGET_IGNCR, TARGET_IGNCR, IGNCR, IGNCR },
 791         { TARGET_ICRNL, TARGET_ICRNL, ICRNL, ICRNL },
 792         { TARGET_IUCLC, TARGET_IUCLC, IUCLC, IUCLC },
 793         { TARGET_IXON, TARGET_IXON, IXON, IXON },
 794         { TARGET_IXANY, TARGET_IXANY, IXANY, IXANY },
 795         { TARGET_IXOFF, TARGET_IXOFF, IXOFF, IXOFF },
 796         { TARGET_IMAXBEL, TARGET_IMAXBEL, IMAXBEL, IMAXBEL },
 797         { 0, 0, 0, 0 }
 798 };
 799
 800 bitmask_transtbl oflag_tbl[] = {
 801         { TARGET_OPOST, TARGET_OPOST, OPOST, OPOST },
 802         { TARGET_OLCUC, TARGET_OLCUC, OLCUC, OLCUC },
 803         { TARGET_ONLCR, TARGET_ONLCR, ONLCR, ONLCR },
 804         { TARGET_OCRNL, TARGET_OCRNL, OCRNL, OCRNL },
 805         { TARGET_ONOCR, TARGET_ONOCR, ONOCR, ONOCR },
 806         { TARGET_ONLRET, TARGET_ONLRET, ONLRET, ONLRET },
 807         { TARGET_OFILL, TARGET_OFILL, OFILL, OFILL },
 808         { TARGET_OFDEL, TARGET_OFDEL, OFDEL, OFDEL },
 809         { TARGET_NLDLY, TARGET_NL0, NLDLY, NL0 },
 810         { TARGET_NLDLY, TARGET_NL1, NLDLY, NL1 },
 811         { TARGET_CRDLY, TARGET_CR0, CRDLY, CR0 },
 812         { TARGET_CRDLY, TARGET_CR1, CRDLY, CR1 },
 813         { TARGET_CRDLY, TARGET_CR2, CRDLY, CR2 },
 814         { TARGET_CRDLY, TARGET_CR3, CRDLY, CR3 },
 815         { TARGET_TABDLY, TARGET_TAB0, TABDLY, TAB0 },
 816         { TARGET_TABDLY, TARGET_TAB1, TABDLY, TAB1 },
 817         { TARGET_TABDLY, TARGET_TAB2, TABDLY, TAB2 },
 818         { TARGET_TABDLY, TARGET_TAB3, TABDLY, TAB3 },
 819         { TARGET_BSDLY, TARGET_BS0, BSDLY, BS0 },
 820         { TARGET_BSDLY, TARGET_BS1, BSDLY, BS1 },
 821         { TARGET_VTDLY, TARGET_VT0, VTDLY, VT0 },
 822         { TARGET_VTDLY, TARGET_VT1, VTDLY, VT1 },
 823         { TARGET_FFDLY, TARGET_FF0, FFDLY, FF0 },
 824         { TARGET_FFDLY, TARGET_FF1, FFDLY, FF1 },
 825         { 0, 0, 0, 0 }
 826 };
 827
 828 bitmask_transtbl cflag_tbl[] = {
 829         { TARGET_CBAUD, TARGET_B0, CBAUD, B0 },
 830         { TARGET_CBAUD, TARGET_B50, CBAUD, B50 },
 831         { TARGET_CBAUD, TARGET_B75, CBAUD, B75 },
 832         { TARGET_CBAUD, TARGET_B110, CBAUD, B110 },
 833         { TARGET_CBAUD, TARGET_B134, CBAUD, B134 },
 834         { TARGET_CBAUD, TARGET_B150, CBAUD, B150 },
 835         { TARGET_CBAUD, TARGET_B200, CBAUD, B200 },
 836         { TARGET_CBAUD, TARGET_B300, CBAUD, B300 },
 837         { TARGET_CBAUD, TARGET_B600, CBAUD, B600 },
 838         { TARGET_CBAUD, TARGET_B1200, CBAUD, B1200 },
 839         { TARGET_CBAUD, TARGET_B1800, CBAUD, B1800 },
 840         { TARGET_CBAUD, TARGET_B2400, CBAUD, B2400 },
 841         { TARGET_CBAUD, TARGET_B4800, CBAUD, B4800 },
 842         { TARGET_CBAUD, TARGET_B9600, CBAUD, B9600 },
 843         { TARGET_CBAUD, TARGET_B19200, CBAUD, B19200 },
 844         { TARGET_CBAUD, TARGET_B38400, CBAUD, B38400 },
 845         { TARGET_CBAUD, TARGET_B57600, CBAUD, B57600 },
 846         { TARGET_CBAUD, TARGET_B115200, CBAUD, B115200 },
 847         { TARGET_CBAUD, TARGET_B230400, CBAUD, B230400 },
 848         { TARGET_CBAUD, TARGET_B460800, CBAUD, B460800 },
 849         { TARGET_CSIZE, TARGET_CS5, CSIZE, CS5 },
 850         { TARGET_CSIZE, TARGET_CS6, CSIZE, CS6 },
 851         { TARGET_CSIZE, TARGET_CS7, CSIZE, CS7 },
 852         { TARGET_CSIZE, TARGET_CS8, CSIZE, CS8 },
 853         { TARGET_CSTOPB, TARGET_CSTOPB, CSTOPB, CSTOPB },
 854         { TARGET_CREAD, TARGET_CREAD, CREAD, CREAD },
 855         { TARGET_PARENB, TARGET_PARENB, PARENB, PARENB },
 856         { TARGET_PARODD, TARGET_PARODD, PARODD, PARODD },
 857         { TARGET_HUPCL, TARGET_HUPCL, HUPCL, HUPCL },
 858         { TARGET_CLOCAL, TARGET_CLOCAL, CLOCAL, CLOCAL },
 859         { TARGET_CRTSCTS, TARGET_CRTSCTS, CRTSCTS, CRTSCTS },
 860         { 0, 0, 0, 0 }
 861 };
 862
 863 bitmask_transtbl lflag_tbl[] = {
 864         { TARGET_ISIG, TARGET_ISIG, ISIG, ISIG },
 865         { TARGET_ICANON, TARGET_ICANON, ICANON, ICANON },
 866         { TARGET_XCASE, TARGET_XCASE, XCASE, XCASE },
 867         { TARGET_ECHO, TARGET_ECHO, ECHO, ECHO },
 868         { TARGET_ECHOE, TARGET_ECHOE, ECHOE, ECHOE },
 869         { TARGET_ECHOK, TARGET_ECHOK, ECHOK, ECHOK },
 870         { TARGET_ECHONL, TARGET_ECHONL, ECHONL, ECHONL },
 871         { TARGET_NOFLSH, TARGET_NOFLSH, NOFLSH, NOFLSH },
 872         { TARGET_TOSTOP, TARGET_TOSTOP, TOSTOP, TOSTOP },
 873         { TARGET_ECHOCTL, TARGET_ECHOCTL, ECHOCTL, ECHOCTL },
 874         { TARGET_ECHOPRT, TARGET_ECHOPRT, ECHOPRT, ECHOPRT },
 875         { TARGET_ECHOKE, TARGET_ECHOKE, ECHOKE, ECHOKE },
 876         { TARGET_FLUSHO, TARGET_FLUSHO, FLUSHO, FLUSHO },
 877         { TARGET_PENDIN, TARGET_PENDIN, PENDIN, PENDIN },
 878         { TARGET_IEXTEN, TARGET_IEXTEN, IEXTEN, IEXTEN },
 879         { 0, 0, 0, 0 }
 880 };
 881
 882 static void target_to_host_termios (void *dst, const void *src)
 883 {
 884     struct host_termios *host = dst;
 885     const struct target_termios *target = src;
 886
 887     host->c_iflag =
 888         target_to_host_bitmask(tswap32(target->c_iflag), iflag_tbl);
 889     host->c_oflag =
 890         target_to_host_bitmask(tswap32(target->c_oflag), oflag_tbl);
 891     host->c_cflag =
 892         target_to_host_bitmask(tswap32(target->c_cflag), cflag_tbl);
 893     host->c_lflag =
 894         target_to_host_bitmask(tswap32(target->c_lflag), lflag_tbl);
 895     host->c_line = target->c_line;
 896
 897     host->c_cc[VINTR] = target->c_cc[TARGET_VINTR];
 898     host->c_cc[VQUIT] = target->c_cc[TARGET_VQUIT];
 899     host->c_cc[VERASE] = target->c_cc[TARGET_VERASE];
 900     host->c_cc[VKILL] = target->c_cc[TARGET_VKILL];
 901     host->c_cc[VEOF] = target->c_cc[TARGET_VEOF];
 902     host->c_cc[VTIME] = target->c_cc[TARGET_VTIME];
 903     host->c_cc[VMIN] = target->c_cc[TARGET_VMIN];
 904     host->c_cc[VSWTC] = target->c_cc[TARGET_VSWTC];
 905     host->c_cc[VSTART] = target->c_cc[TARGET_VSTART];
 906     host->c_cc[VSTOP] = target->c_cc[TARGET_VSTOP];
 907     host->c_cc[VSUSP] = target->c_cc[TARGET_VSUSP];
 908     host->c_cc[VEOL] = target->c_cc[TARGET_VEOL];
 909     host->c_cc[VREPRINT] = target->c_cc[TARGET_VREPRINT];
 910     host->c_cc[VDISCARD] = target->c_cc[TARGET_VDISCARD];
 911     host->c_cc[VWERASE] = target->c_cc[TARGET_VWERASE];
 912     host->c_cc[VLNEXT] = target->c_cc[TARGET_VLNEXT];
 913     host->c_cc[VEOL2] = target->c_cc[TARGET_VEOL2];
 914 }
 915
 916 static void host_to_target_termios (void *dst, const void *src)
 917 {
 918     struct target_termios *target = dst;
 919     const struct host_termios *host = src;
 920
 921     target->c_iflag =
 922         tswap32(host_to_target_bitmask(host->c_iflag, iflag_tbl));
 923     target->c_oflag =
 924         tswap32(host_to_target_bitmask(host->c_oflag, oflag_tbl));
 925     target->c_cflag =
 926         tswap32(host_to_target_bitmask(host->c_cflag, cflag_tbl));
 927     target->c_lflag =
 928         tswap32(host_to_target_bitmask(host->c_lflag, lflag_tbl));
 929     target->c_line = host->c_line;
 930
 931     target->c_cc[TARGET_VINTR] = host->c_cc[VINTR];
 932     target->c_cc[TARGET_VQUIT] = host->c_cc[VQUIT];
 933     target->c_cc[TARGET_VERASE] = host->c_cc[VERASE];
 934     target->c_cc[TARGET_VKILL] = host->c_cc[VKILL];
 935     target->c_cc[TARGET_VEOF] = host->c_cc[VEOF];
 936     target->c_cc[TARGET_VTIME] = host->c_cc[VTIME];
 937     target->c_cc[TARGET_VMIN] = host->c_cc[VMIN];
 938     target->c_cc[TARGET_VSWTC] = host->c_cc[VSWTC];
 939     target->c_cc[TARGET_VSTART] = host->c_cc[VSTART];
 940     target->c_cc[TARGET_VSTOP] = host->c_cc[VSTOP];
 941     target->c_cc[TARGET_VSUSP] = host->c_cc[VSUSP];
 942     target->c_cc[TARGET_VEOL] = host->c_cc[VEOL];
 943     target->c_cc[TARGET_VREPRINT] = host->c_cc[VREPRINT];
 944     target->c_cc[TARGET_VDISCARD] = host->c_cc[VDISCARD];
 945     target->c_cc[TARGET_VWERASE] = host->c_cc[VWERASE];
 946     target->c_cc[TARGET_VLNEXT] = host->c_cc[VLNEXT];
 947     target->c_cc[TARGET_VEOL2] = host->c_cc[VEOL2];
 948 }
 949
 950 StructEntry struct_termios_def = {
 951     .convert = { host_to_target_termios, target_to_host_termios },
 952     .size = { sizeof(struct target_termios), sizeof(struct host_termios) },
 953     .align = { __alignof__(struct target_termios), __alignof__(struct host_termios) },
 954 };
 955
 956 static bitmask_transtbl mmap_flags_tbl[] = {
 957         { TARGET_MAP_SHARED, TARGET_MAP_SHARED, MAP_SHARED, MAP_SHARED },
 958         { TARGET_MAP_PRIVATE, TARGET_MAP_PRIVATE, MAP_PRIVATE, MAP_PRIVATE },
 959         { TARGET_MAP_FIXED, TARGET_MAP_FIXED, MAP_FIXED, MAP_FIXED },
 960         { TARGET_MAP_ANONYMOUS, TARGET_MAP_ANONYMOUS, MAP_ANONYMOUS, MAP_ANONYMOUS },
 961         { TARGET_MAP_GROWSDOWN, TARGET_MAP_GROWSDOWN, MAP_GROWSDOWN, MAP_GROWSDOWN },
 962         { TARGET_MAP_DENYWRITE, TARGET_MAP_DENYWRITE, MAP_DENYWRITE, MAP_DENYWRITE },
 963         { TARGET_MAP_EXECUTABLE, TARGET_MAP_EXECUTABLE, MAP_EXECUTABLE, MAP_EXECUTABLE },
 964         { TARGET_MAP_LOCKED, TARGET_MAP_LOCKED, MAP_LOCKED, MAP_LOCKED },
 965         { 0, 0, 0, 0 }
 966 };
 967
 968 #if defined(TARGET_I386)
 969
 970 /* NOTE: there is really one LDT for all the threads */
 971 uint8_t *ldt_table;
 972
 973 static int read_ldt(void *ptr, unsigned long bytecount)
 974 {
 975     int size;
 976
 977     if (!ldt_table)
 978         return 0;
 979     size = TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE;
 980     if (size > bytecount)
 981         size = bytecount;
 982     memcpy(ptr, ldt_table, size);
 983     return size;
 984 }
 985
 986 /* XXX: add locking support */
 987 static int write_ldt(CPUX86State *env,
 988                      void *ptr, unsigned long bytecount, int oldmode)
 989 {
 990     struct target_modify_ldt_ldt_s ldt_info;
 991     int seg_32bit, contents, read_exec_only, limit_in_pages;
 992     int seg_not_present, useable;
 993     uint32_t *lp, entry_1, entry_2;
 994
 995     if (bytecount != sizeof(ldt_info))
 996         return -EINVAL;
 997     memcpy(&ldt_info, ptr, sizeof(ldt_info));
 998     tswap32s(&ldt_info.entry_number);
 999     tswapls((long *)&ldt_info.base_addr);
1000     tswap32s(&ldt_info.limit);
1001     tswap32s(&ldt_info.flags);
1002
1003     if (ldt_info.entry_number >= TARGET_LDT_ENTRIES)
1004         return -EINVAL;
1005     seg_32bit = ldt_info.flags & 1;
1006     contents = (ldt_info.flags >> 1) & 3;
1007     read_exec_only = (ldt_info.flags >> 3) & 1;
1008     limit_in_pages = (ldt_info.flags >> 4) & 1;
1009     seg_not_present = (ldt_info.flags >> 5) & 1;
1010     useable = (ldt_info.flags >> 6) & 1;
1011
1012     if (contents == 3) {
1013         if (oldmode)
1014             return -EINVAL;
1015         if (seg_not_present == 0)
1016             return -EINVAL;
1017     }
1018     /* allocate the LDT */
1019     if (!ldt_table) {
1020         ldt_table = malloc(TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE);
1021         if (!ldt_table)
1022             return -ENOMEM;
1023         memset(ldt_table, 0, TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE);
1024         env->ldt.base = ldt_table;
1025         env->ldt.limit = 0xffff;
1026     }
1027
1028     /* NOTE: same code as Linux kernel */
1029     /* Allow LDTs to be cleared by the user. */
1030     if (ldt_info.base_addr == 0 && ldt_info.limit == 0) {
1031         if (oldmode ||
1032             (contents == 0              &&
1033              read_exec_only == 1        &&
1034              seg_32bit == 0             &&
1035              limit_in_pages == 0        &&
1036              seg_not_present == 1       &&
1037              useable == 0 )) {
1038             entry_1 = 0;
1039             entry_2 = 0;
1040             goto install;
1041         }
1042     }
1043
1044     entry_1 = ((ldt_info.base_addr & 0x0000ffff) << 16) |
1045         (ldt_info.limit & 0x0ffff);
1046     entry_2 = (ldt_info.base_addr & 0xff000000) |
1047         ((ldt_info.base_addr & 0x00ff0000) >> 16) |
1048         (ldt_info.limit & 0xf0000) |
1049         ((read_exec_only ^ 1) << 9) |
1050         (contents << 10) |
1051         ((seg_not_present ^ 1) << 15) |
1052         (seg_32bit << 22) |
1053         (limit_in_pages << 23) |
1054         0x7000;
1055     if (!oldmode)
1056         entry_2 |= (useable << 20);
1057
1058     /* Install the new entry ...  */
1059 install:
1060     lp = (uint32_t *)(ldt_table + (ldt_info.entry_number << 3));
1061     lp[0] = tswap32(entry_1);
1062     lp[1] = tswap32(entry_2);
1063     return 0;
1064 }
1065
1066 /* specific and weird i386 syscalls */
1067 int do_modify_ldt(CPUX86State *env, int func, void *ptr, unsigned long bytecount)
1068 {
1069     int ret = -ENOSYS;
1070
1071     switch (func) {
1072     case 0:
1073         ret = read_ldt(ptr, bytecount);
1074         break;
1075     case 1:
1076         ret = write_ldt(env, ptr, bytecount, 1);
1077         break;
1078     case 0x11:
1079         ret = write_ldt(env, ptr, bytecount, 0);
1080         break;
1081     }
1082     return ret;
1083 }
1084
1085 #endif /* defined(TARGET_I386) */
1086
1087 /* this stack is the equivalent of the kernel stack associated with a
1088    thread/process */
1089 #define NEW_STACK_SIZE 8192
1090
1091 static int clone_func(void *arg)
1092 {
1093     CPUState *env = arg;
1094     cpu_loop(env);
1095     /* never exits */
1096     return 0;
1097 }
1098
1099 int do_fork(CPUState *env, unsigned int flags, unsigned long newsp)
1100 {
1101     int ret;
1102     TaskState *ts;
1103     uint8_t *new_stack;
1104     CPUState *new_env;
1105
1106     if (flags & CLONE_VM) {
1107         ts = malloc(sizeof(TaskState) + NEW_STACK_SIZE);
1108         memset(ts, 0, sizeof(TaskState));
1109         new_stack = ts->stack;
1110         ts->used = 1;
1111         /* add in task state list */
1112         ts->next = first_task_state;
1113         first_task_state = ts;
1114         /* we create a new CPU instance. */
1115         new_env = cpu_init();
1116         memcpy(new_env, env, sizeof(CPUState));
1117 #if defined(TARGET_I386)
1118         if (!newsp)
1119             newsp = env->regs[R_ESP];
1120         new_env->regs[R_ESP] = newsp;
1121         new_env->regs[R_EAX] = 0;
1122 #elif defined(TARGET_ARM)
1123         if (!newsp)
1124             newsp = env->regs[13];
1125         new_env->regs[13] = newsp;
1126         new_env->regs[0] = 0;
1127 #else
1128 #error unsupported target CPU
1129 #endif
1130         new_env->opaque = ts;
1131 #ifdef __ia64__
1132         ret = clone2(clone_func, new_stack + NEW_STACK_SIZE, flags, new_env);
1133 #else
1134         ret = clone(clone_func, new_stack + NEW_STACK_SIZE, flags, new_env);
1135 #endif
1136     } else {
1137         /* if no CLONE_VM, we consider it is a fork */
1138         if ((flags & ~CSIGNAL) != 0)
1139             return -EINVAL;
1140         ret = fork();
1141     }
1142     return ret;
1143 }
1144
1145 static long do_fcntl(int fd, int cmd, unsigned long arg)
1146 {
1147     struct flock fl;
1148     struct target_flock *target_fl = (void *)arg;
1149     long ret;
1150
1151     switch(cmd) {
1152     case TARGET_F_GETLK:
1153         ret = fcntl(fd, cmd, &fl);
1154         if (ret == 0) {
1155             target_fl->l_type = tswap16(fl.l_type);
1156             target_fl->l_whence = tswap16(fl.l_whence);
1157             target_fl->l_start = tswapl(fl.l_start);
1158             target_fl->l_len = tswapl(fl.l_len);
1159             target_fl->l_pid = tswapl(fl.l_pid);
1160         }
1161         break;
1162
1163     case TARGET_F_SETLK:
1164     case TARGET_F_SETLKW:
1165         fl.l_type = tswap16(target_fl->l_type);
1166         fl.l_whence = tswap16(target_fl->l_whence);
1167         fl.l_start = tswapl(target_fl->l_start);
1168         fl.l_len = tswapl(target_fl->l_len);
1169         fl.l_pid = tswapl(target_fl->l_pid);
1170         ret = fcntl(fd, cmd, &fl);
1171         break;
1172
1173     case TARGET_F_GETLK64:
1174     case TARGET_F_SETLK64:
1175     case TARGET_F_SETLKW64:
1176         ret = -1;
1177         errno = EINVAL;
1178         break;
1179
1180     default:
1181         ret = fcntl(fd, cmd, arg);
1182         break;
1183     }
1184     return ret;
1185 }
1186
1187
1188 #define high2lowuid(x) (x)
1189 #define high2lowgid(x) (x)
1190 #define low2highuid(x) (x)
1191 #define low2highgid(x) (x)
1192
1193 void syscall_init(void)
1194 {
1195     IOCTLEntry *ie;
1196     const argtype *arg_type;
1197     int size;
1198
1199 #define STRUCT(name, list...) thunk_register_struct(STRUCT_ ## name, #name, struct_ ## name ## _def);
1200 #define STRUCT_SPECIAL(name) thunk_register_struct_direct(STRUCT_ ## name, #name, &struct_ ## name ## _def);
1201 #include "syscall_types.h"
1202 #undef STRUCT
1203 #undef STRUCT_SPECIAL
1204
1205     /* we patch the ioctl size if necessary. We rely on the fact that
1206        no ioctl has all the bits at '1' in the size field */
1207     ie = ioctl_entries;
1208     while (ie->target_cmd != 0) {
1209         if (((ie->target_cmd >> TARGET_IOC_SIZESHIFT) & TARGET_IOC_SIZEMASK) ==
1210             TARGET_IOC_SIZEMASK) {
1211             arg_type = ie->arg_type;
1212             if (arg_type[0] != TYPE_PTR) {
1213                 fprintf(stderr, "cannot patch size for ioctl 0x%x\n",
1214                         ie->target_cmd);
1215                 exit(1);
1216             }
1217             arg_type++;
1218             size = thunk_type_size(arg_type, 0);
1219             ie->target_cmd = (ie->target_cmd &
1220                               ~(TARGET_IOC_SIZEMASK << TARGET_IOC_SIZESHIFT)) |
1221                 (size << TARGET_IOC_SIZESHIFT);
1222         }
1223         /* automatic consistency check if same arch */
1224 #if defined(__i386__) && defined(TARGET_I386)
1225         if (ie->target_cmd != ie->host_cmd) {
1226             fprintf(stderr, "ERROR: ioctl: target=0x%x host=0x%x\n",
1227                     ie->target_cmd, ie->host_cmd);
1228         }
1229 #endif
1230         ie++;
1231     }
1232 }
1233
1234 long do_syscall(void *cpu_env, int num, long arg1, long arg2, long arg3,
1235                 long arg4, long arg5, long arg6)
1236 {
1237     long ret;
1238     struct stat st;
1239     struct kernel_statfs *stfs;
1240
1241 #ifdef DEBUG
1242     gemu_log("syscall %d\n", num);
1243 #endif
1244     switch(num) {
1245     case TARGET_NR_exit:
1246 #ifdef HAVE_GPROF
1247         _mcleanup();
1248 #endif
1249         /* XXX: should free thread stack and CPU env */
1250         _exit(arg1);
1251         ret = 0; /* avoid warning */
1252         break;
1253     case TARGET_NR_read:
1254         page_unprotect_range((void *)arg2, arg3);
1255         ret = get_errno(read(arg1, (void *)arg2, arg3));
1256         break;
1257     case TARGET_NR_write:
1258         ret = get_errno(write(arg1, (void *)arg2, arg3));
1259         break;
1260     case TARGET_NR_open:
1261         ret = get_errno(open(path((const char *)arg1), arg2, arg3));
1262         break;
1263     case TARGET_NR_close:
1264         ret = get_errno(close(arg1));
1265         break;
1266     case TARGET_NR_brk:
1267         ret = do_brk((char *)arg1);
1268         break;
1269     case TARGET_NR_fork:
1270         ret = get_errno(do_fork(cpu_env, SIGCHLD, 0));
1271         break;
1272     case TARGET_NR_waitpid:
1273         {
1274             int *status = (int *)arg2;
1275             ret = get_errno(waitpid(arg1, status, arg3));
1276             if (!is_error(ret) && status)
1277                 tswapls((long *)&status);
1278         }
1279         break;
1280     case TARGET_NR_creat:
1281         ret = get_errno(creat((const char *)arg1, arg2));
1282         break;
1283     case TARGET_NR_link:
1284         ret = get_errno(link((const char *)arg1, (const char *)arg2));
1285         break;
1286     case TARGET_NR_unlink:
1287         ret = get_errno(unlink((const char *)arg1));
1288         break;
1289     case TARGET_NR_execve:
1290         {
1291             char **argp, **envp;
1292             int argc, envc;
1293             uint32_t *p;
1294             char **q;
1295
1296             argc = 0;
1297             for (p = (void *)arg2; *p; p++)
1298                 argc++;
1299             envc = 0;
1300             for (p = (void *)arg3; *p; p++)
1301                 envc++;
1302
1303             argp = alloca((argc + 1) * sizeof(void *));
1304             envp = alloca((envc + 1) * sizeof(void *));
1305
1306             for (p = (void *)arg2, q = argp; *p; p++, q++)
1307                 *q = (void *)tswap32(*p);
1308             *q = NULL;
1309
1310             for (p = (void *)arg3, q = envp; *p; p++, q++)
1311                 *q = (void *)tswap32(*p);
1312             *q = NULL;
1313
1314             ret = get_errno(execve((const char *)arg1, argp, envp));
1315         }
1316         break;
1317     case TARGET_NR_chdir:
1318         ret = get_errno(chdir((const char *)arg1));
1319         break;
1320     case TARGET_NR_time:
1321         {
1322             int *time_ptr = (int *)arg1;
1323             ret = get_errno(time((time_t *)time_ptr));
1324             if (!is_error(ret) && time_ptr)
1325                 tswap32s(time_ptr);
1326         }
1327         break;
1328     case TARGET_NR_mknod:
1329         ret = get_errno(mknod((const char *)arg1, arg2, arg3));
1330         break;
1331     case TARGET_NR_chmod:
1332         ret = get_errno(chmod((const char *)arg1, arg2));
1333         break;
1334     case TARGET_NR_lchown:
1335         ret = get_errno(chown((const char *)arg1, arg2, arg3));
1336         break;
1337     case TARGET_NR_break:
1338         goto unimplemented;
1339     case TARGET_NR_oldstat:
1340         goto unimplemented;
1341     case TARGET_NR_lseek:
1342         ret = get_errno(lseek(arg1, arg2, arg3));
1343         break;
1344     case TARGET_NR_getpid:
1345         ret = get_errno(getpid());
1346         break;
1347     case TARGET_NR_mount:
1348         /* need to look at the data field */
1349         goto unimplemented;
1350     case TARGET_NR_umount:
1351         ret = get_errno(umount((const char *)arg1));
1352         break;
1353     case TARGET_NR_setuid:
1354         ret = get_errno(setuid(low2highuid(arg1)));
1355         break;
1356     case TARGET_NR_getuid:
1357         ret = get_errno(getuid());
1358         break;
1359     case TARGET_NR_stime:
1360         {
1361             int *time_ptr = (int *)arg1;
1362             if (time_ptr)
1363                 tswap32s(time_ptr);
1364             ret = get_errno(stime((time_t *)time_ptr));
1365         }
1366         break;
1367     case TARGET_NR_ptrace:
1368         goto unimplemented;
1369     case TARGET_NR_alarm:
1370         ret = alarm(arg1);
1371         break;
1372     case TARGET_NR_oldfstat:
1373         goto unimplemented;
1374     case TARGET_NR_pause:
1375         ret = get_errno(pause());
1376         break;
1377     case TARGET_NR_utime:
1378         goto unimplemented;
1379     case TARGET_NR_stty:
1380         goto unimplemented;
1381     case TARGET_NR_gtty:
1382         goto unimplemented;
1383     case TARGET_NR_access:
1384         ret = get_errno(access((const char *)arg1, arg2));
1385         break;
1386     case TARGET_NR_nice:
1387         ret = get_errno(nice(arg1));
1388         break;
1389     case TARGET_NR_ftime:
1390         goto unimplemented;
1391     case TARGET_NR_sync:
1392         sync();
1393         ret = 0;
1394         break;
1395     case TARGET_NR_kill:
1396         ret = get_errno(kill(arg1, arg2));
1397         break;
1398     case TARGET_NR_rename:
1399         ret = get_errno(rename((const char *)arg1, (const char *)arg2));
1400         break;
1401     case TARGET_NR_mkdir:
1402         ret = get_errno(mkdir((const char *)arg1, arg2));
1403         break;
1404     case TARGET_NR_rmdir:
1405         ret = get_errno(rmdir((const char *)arg1));
1406         break;
1407     case TARGET_NR_dup:
1408         ret = get_errno(dup(arg1));
1409         break;
1410     case TARGET_NR_pipe:
1411         {
1412             int *pipe_ptr = (int *)arg1;
1413             ret = get_errno(pipe(pipe_ptr));
1414             if (!is_error(ret)) {
1415                 tswap32s(&pipe_ptr[0]);
1416                 tswap32s(&pipe_ptr[1]);
1417             }
1418         }
1419         break;
1420     case TARGET_NR_times:
1421         {
1422             struct target_tms *tmsp = (void *)arg1;
1423             struct tms tms;
1424             ret = get_errno(times(&tms));
1425             if (tmsp) {
1426                 tmsp->tms_utime = tswapl(tms.tms_utime);
1427                 tmsp->tms_stime = tswapl(tms.tms_stime);
1428                 tmsp->tms_cutime = tswapl(tms.tms_cutime);
1429                 tmsp->tms_cstime = tswapl(tms.tms_cstime);
1430             }
1431         }
1432         break;
1433     case TARGET_NR_prof:
1434         goto unimplemented;
1435     case TARGET_NR_setgid:
1436         ret = get_errno(setgid(low2highgid(arg1)));
1437         break;
1438     case TARGET_NR_getgid:
1439         ret = get_errno(getgid());
1440         break;
1441     case TARGET_NR_signal:
1442         goto unimplemented;
1443     case TARGET_NR_geteuid:
1444         ret = get_errno(geteuid());
1445         break;
1446     case TARGET_NR_getegid:
1447         ret = get_errno(getegid());
1448         break;
1449     case TARGET_NR_acct:
1450         goto unimplemented;
1451     case TARGET_NR_umount2:
1452         ret = get_errno(umount2((const char *)arg1, arg2));
1453         break;
1454     case TARGET_NR_lock:
1455         goto unimplemented;
1456     case TARGET_NR_ioctl:
1457         ret = do_ioctl(arg1, arg2, arg3);
1458         break;
1459     case TARGET_NR_fcntl:
1460         ret = get_errno(do_fcntl(arg1, arg2, arg3));
1461         break;
1462     case TARGET_NR_mpx:
1463         goto unimplemented;
1464     case TARGET_NR_setpgid:
1465         ret = get_errno(setpgid(arg1, arg2));
1466         break;
1467     case TARGET_NR_ulimit:
1468         goto unimplemented;
1469     case TARGET_NR_oldolduname:
1470         goto unimplemented;
1471     case TARGET_NR_umask:
1472         ret = get_errno(umask(arg1));
1473         break;
1474     case TARGET_NR_chroot:
1475         ret = get_errno(chroot((const char *)arg1));
1476         break;
1477     case TARGET_NR_ustat:
1478         goto unimplemented;
1479     case TARGET_NR_dup2:
1480         ret = get_errno(dup2(arg1, arg2));
1481         break;
1482     case TARGET_NR_getppid:
1483         ret = get_errno(getppid());
1484         break;
1485     case TARGET_NR_getpgrp:
1486         ret = get_errno(getpgrp());
1487         break;
1488     case TARGET_NR_setsid:
1489         ret = get_errno(setsid());
1490         break;
1491     case TARGET_NR_sigaction:
1492         {
1493             struct target_old_sigaction *old_act = (void *)arg2;
1494             struct target_old_sigaction *old_oact = (void *)arg3;
1495             struct target_sigaction act, oact, *pact;
1496             if (old_act) {
1497                 act._sa_handler = old_act->_sa_handler;
1498                 target_siginitset(&act.sa_mask, old_act->sa_mask);
1499                 act.sa_flags = old_act->sa_flags;
1500                 act.sa_restorer = old_act->sa_restorer;
1501                 pact = &act;
1502             } else {
1503                 pact = NULL;
1504             }
1505             ret = get_errno(do_sigaction(arg1, pact, &oact));
1506             if (!is_error(ret) && old_oact) {
1507                 old_oact->_sa_handler = oact._sa_handler;
1508                 old_oact->sa_mask = oact.sa_mask.sig[0];
1509                 old_oact->sa_flags = oact.sa_flags;
1510                 old_oact->sa_restorer = oact.sa_restorer;
1511             }
1512         }
1513         break;
1514     case TARGET_NR_rt_sigaction:
1515         ret = get_errno(do_sigaction(arg1, (void *)arg2, (void *)arg3));
1516         break;
1517     case TARGET_NR_sgetmask:
1518         {
1519             sigset_t cur_set;
1520             target_ulong target_set;
1521             sigprocmask(0, NULL, &cur_set);
1522             host_to_target_old_sigset(&target_set, &cur_set);
1523             ret = target_set;
1524         }
1525         break;
1526     case TARGET_NR_ssetmask:
1527         {
1528             sigset_t set, oset, cur_set;
1529             target_ulong target_set = arg1;
1530             sigprocmask(0, NULL, &cur_set);
1531             target_to_host_old_sigset(&set, &target_set);
1532             sigorset(&set, &set, &cur_set);
1533             sigprocmask(SIG_SETMASK, &set, &oset);
1534             host_to_target_old_sigset(&target_set, &oset);
1535             ret = target_set;
1536         }
1537         break;
1538     case TARGET_NR_sigprocmask:
1539         {
1540             int how = arg1;
1541             sigset_t set, oldset, *set_ptr;
1542             target_ulong *pset = (void *)arg2, *poldset = (void *)arg3;
1543
1544             if (pset) {
1545                 switch(how) {
1546                 case TARGET_SIG_BLOCK:
1547                     how = SIG_BLOCK;
1548                     break;
1549                 case TARGET_SIG_UNBLOCK:
1550                     how = SIG_UNBLOCK;
1551                     break;
1552                 case TARGET_SIG_SETMASK:
1553                     how = SIG_SETMASK;
1554                     break;
1555                 default:
1556                     ret = -EINVAL;
1557                     goto fail;
1558                 }
1559                 target_to_host_old_sigset(&set, pset);
1560                 set_ptr = &set;
1561             } else {
1562                 how = 0;
1563                 set_ptr = NULL;
1564             }
1565             ret = get_errno(sigprocmask(arg1, set_ptr, &oldset));
1566             if (!is_error(ret) && poldset) {
1567                 host_to_target_old_sigset(poldset, &oldset);
1568             }
1569         }
1570         break;
1571     case TARGET_NR_rt_sigprocmask:
1572         {
1573             int how = arg1;
1574             sigset_t set, oldset, *set_ptr;
1575             target_sigset_t *pset = (void *)arg2;
1576             target_sigset_t *poldset = (void *)arg3;
1577
1578             if (pset) {
1579                 switch(how) {
1580                 case TARGET_SIG_BLOCK:
1581                     how = SIG_BLOCK;
1582                     break;
1583                 case TARGET_SIG_UNBLOCK:
1584                     how = SIG_UNBLOCK;
1585                     break;
1586                 case TARGET_SIG_SETMASK:
1587                     how = SIG_SETMASK;
1588                     break;
1589                 default:
1590                     ret = -EINVAL;
1591                     goto fail;
1592                 }
1593                 target_to_host_sigset(&set, pset);
1594                 set_ptr = &set;
1595             } else {
1596                 how = 0;
1597                 set_ptr = NULL;
1598             }
1599             ret = get_errno(sigprocmask(how, set_ptr, &oldset));
1600             if (!is_error(ret) && poldset) {
1601                 host_to_target_sigset(poldset, &oldset);
1602             }
1603         }
1604         break;
1605     case TARGET_NR_sigpending:
1606         {
1607             sigset_t set;
1608             ret = get_errno(sigpending(&set));
1609             if (!is_error(ret)) {
1610                 host_to_target_old_sigset((target_ulong *)arg1, &set);
1611             }
1612         }
1613         break;
1614     case TARGET_NR_rt_sigpending:
1615         {
1616             sigset_t set;
1617             ret = get_errno(sigpending(&set));
1618             if (!is_error(ret)) {
1619                 host_to_target_sigset((target_sigset_t *)arg1, &set);
1620             }
1621         }
1622         break;
1623     case TARGET_NR_sigsuspend:
1624         {
1625             sigset_t set;
1626             target_to_host_old_sigset(&set, (target_ulong *)arg1);
1627             ret = get_errno(sigsuspend(&set));
1628         }
1629         break;
1630     case TARGET_NR_rt_sigsuspend:
1631         {
1632             sigset_t set;
1633             target_to_host_sigset(&set, (target_sigset_t *)arg1);
1634             ret = get_errno(sigsuspend(&set));
1635         }
1636         break;
1637     case TARGET_NR_rt_sigtimedwait:
1638         {
1639             target_sigset_t *target_set = (void *)arg1;
1640             target_siginfo_t *target_uinfo = (void *)arg2;
1641             struct target_timespec *target_uts = (void *)arg3;
1642             sigset_t set;
1643             struct timespec uts, *puts;
1644             siginfo_t uinfo;
1645
1646             target_to_host_sigset(&set, target_set);
1647             if (target_uts) {
1648                 puts = &uts;
1649                 puts->tv_sec = tswapl(target_uts->tv_sec);
1650                 puts->tv_nsec = tswapl(target_uts->tv_nsec);
1651             } else {
1652                 puts = NULL;
1653             }
1654             ret = get_errno(sigtimedwait(&set, &uinfo, puts));
1655             if (!is_error(ret) && target_uinfo) {
1656                 host_to_target_siginfo(target_uinfo, &uinfo);
1657             }
1658         }
1659         break;
1660     case TARGET_NR_rt_sigqueueinfo:
1661         {
1662             siginfo_t uinfo;
1663             target_to_host_siginfo(&uinfo, (target_siginfo_t *)arg3);
1664             ret = get_errno(sys_rt_sigqueueinfo(arg1, arg2, &uinfo));
1665         }
1666         break;
1667     case TARGET_NR_sigreturn:
1668         /* NOTE: ret is eax, so not transcoding must be done */
1669         ret = do_sigreturn(cpu_env);
1670         break;
1671     case TARGET_NR_rt_sigreturn:
1672         /* NOTE: ret is eax, so not transcoding must be done */
1673         ret = do_rt_sigreturn(cpu_env);
1674         break;
1675     case TARGET_NR_setreuid:
1676         ret = get_errno(setreuid(arg1, arg2));
1677         break;
1678     case TARGET_NR_setregid:
1679         ret = get_errno(setregid(arg1, arg2));
1680         break;
1681     case TARGET_NR_sethostname:
1682         ret = get_errno(sethostname((const char *)arg1, arg2));
1683         break;
1684     case TARGET_NR_setrlimit:
1685         {
1686             /* XXX: convert resource ? */
1687             int resource = arg1;
1688             struct target_rlimit *target_rlim = (void *)arg2;
1689             struct rlimit rlim;
1690             rlim.rlim_cur = tswapl(target_rlim->rlim_cur);
1691             rlim.rlim_max = tswapl(target_rlim->rlim_max);
1692             ret = get_errno(setrlimit(resource, &rlim));
1693         }
1694         break;
1695     case TARGET_NR_getrlimit:
1696         {
1697             /* XXX: convert resource ? */
1698             int resource = arg1;
1699             struct target_rlimit *target_rlim = (void *)arg2;
1700             struct rlimit rlim;
1701
1702             ret = get_errno(getrlimit(resource, &rlim));
1703             if (!is_error(ret)) {
1704                 target_rlim->rlim_cur = tswapl(rlim.rlim_cur);
1705                 target_rlim->rlim_max = tswapl(rlim.rlim_max);
1706             }
1707         }
1708         break;
1709     case TARGET_NR_getrusage:
1710         {
1711             struct rusage rusage;
1712             struct target_rusage *target_rusage = (void *)arg2;
1713             ret = get_errno(getrusage(arg1, &rusage));
1714             if (!is_error(ret)) {
1715                 host_to_target_rusage(target_rusage, &rusage);
1716             }
1717         }
1718         break;
1719     case TARGET_NR_gettimeofday:
1720         {
1721             struct target_timeval *target_tv = (void *)arg1;
1722             struct timeval tv;
1723             ret = get_errno(gettimeofday(&tv, NULL));
1724             if (!is_error(ret)) {
1725                 host_to_target_timeval(target_tv, &tv);
1726             }
1727         }
1728         break;
1729     case TARGET_NR_settimeofday:
1730         {
1731             struct target_timeval *target_tv = (void *)arg1;
1732             struct timeval tv;
1733             target_to_host_timeval(&tv, target_tv);
1734             ret = get_errno(settimeofday(&tv, NULL));
1735         }
1736         break;
1737     case TARGET_NR_getgroups:
1738         {
1739             int gidsetsize = arg1;
1740             uint16_t *target_grouplist = (void *)arg2;
1741             gid_t *grouplist;
1742             int i;
1743
1744             grouplist = alloca(gidsetsize * sizeof(gid_t));
1745             ret = get_errno(getgroups(gidsetsize, grouplist));
1746             if (!is_error(ret)) {
1747                 for(i = 0;i < gidsetsize; i++)
1748                     target_grouplist[i] = tswap16(grouplist[i]);
1749             }
1750         }
1751         break;
1752     case TARGET_NR_setgroups:
1753         {
1754             int gidsetsize = arg1;
1755             uint16_t *target_grouplist = (void *)arg2;
1756             gid_t *grouplist;
1757             int i;
1758
1759             grouplist = alloca(gidsetsize * sizeof(gid_t));
1760             for(i = 0;i < gidsetsize; i++)
1761                 grouplist[i] = tswap16(target_grouplist[i]);
1762             ret = get_errno(setgroups(gidsetsize, grouplist));
1763         }
1764         break;
1765     case TARGET_NR_select:
1766         goto unimplemented;
1767     case TARGET_NR_symlink:
1768         ret = get_errno(symlink((const char *)arg1, (const char *)arg2));
1769         break;
1770     case TARGET_NR_oldlstat:
1771         goto unimplemented;
1772     case TARGET_NR_readlink:
1773         ret = get_errno(readlink(path((const char *)arg1), (char *)arg2, arg3));
1774         break;
1775     case TARGET_NR_uselib:
1776         goto unimplemented;
1777     case TARGET_NR_swapon:
1778         ret = get_errno(swapon((const char *)arg1, arg2));
1779         break;
1780     case TARGET_NR_reboot:
1781         goto unimplemented;
1782     case TARGET_NR_readdir:
1783         goto unimplemented;
1784 #ifdef TARGET_I386
1785     case TARGET_NR_mmap:
1786         {
1787             uint32_t v1, v2, v3, v4, v5, v6, *vptr;
1788             vptr = (uint32_t *)arg1;
1789             v1 = tswap32(vptr[0]);
1790             v2 = tswap32(vptr[1]);
1791             v3 = tswap32(vptr[2]);
1792             v4 = tswap32(vptr[3]);
1793             v5 = tswap32(vptr[4]);
1794             v6 = tswap32(vptr[5]);
1795             ret = get_errno(target_mmap(v1, v2, v3,
1796                                         target_to_host_bitmask(v4, mmap_flags_tbl),
1797                                         v5, v6));
1798         }
1799         break;
1800 #endif
1801 #ifdef TARGET_I386
1802     case TARGET_NR_mmap2:
1803 #else
1804     case TARGET_NR_mmap:
1805 #endif
1806         ret = get_errno(target_mmap(arg1, arg2, arg3,
1807                                     target_to_host_bitmask(arg4, mmap_flags_tbl),
1808                                     arg5,
1809                                     arg6 << TARGET_PAGE_BITS));
1810         break;
1811     case TARGET_NR_munmap:
1812         ret = get_errno(target_munmap(arg1, arg2));
1813         break;
1814     case TARGET_NR_mprotect:
1815         ret = get_errno(target_mprotect(arg1, arg2, arg3));
1816         break;
1817     case TARGET_NR_mremap:
1818         ret = get_errno(target_mremap(arg1, arg2, arg3, arg4, arg5));
1819         break;
1820     case TARGET_NR_msync:
1821         ret = get_errno(msync((void *)arg1, arg2, arg3));
1822         break;
1823     case TARGET_NR_mlock:
1824         ret = get_errno(mlock((void *)arg1, arg2));
1825         break;
1826     case TARGET_NR_munlock:
1827         ret = get_errno(munlock((void *)arg1, arg2));
1828         break;
1829     case TARGET_NR_mlockall:
1830         ret = get_errno(mlockall(arg1));
1831         break;
1832     case TARGET_NR_munlockall:
1833         ret = get_errno(munlockall());
1834         break;
1835     case TARGET_NR_truncate:
1836         ret = get_errno(truncate((const char *)arg1, arg2));
1837         break;
1838     case TARGET_NR_ftruncate:
1839         ret = get_errno(ftruncate(arg1, arg2));
1840         break;
1841     case TARGET_NR_fchmod:
1842         ret = get_errno(fchmod(arg1, arg2));
1843         break;
1844     case TARGET_NR_fchown:
1845         ret = get_errno(fchown(arg1, arg2, arg3));
1846         break;
1847     case TARGET_NR_getpriority:
1848         ret = get_errno(getpriority(arg1, arg2));
1849         break;
1850     case TARGET_NR_setpriority:
1851         ret = get_errno(setpriority(arg1, arg2, arg3));
1852         break;
1853     case TARGET_NR_profil:
1854         goto unimplemented;
1855     case TARGET_NR_statfs:
1856         stfs = (void *)arg2;
1857         ret = get_errno(sys_statfs(path((const char *)arg1), stfs));
1858     convert_statfs:
1859         if (!is_error(ret)) {
1860             tswap32s(&stfs->f_type);
1861             tswap32s(&stfs->f_bsize);
1862             tswap32s(&stfs->f_blocks);
1863             tswap32s(&stfs->f_bfree);
1864             tswap32s(&stfs->f_bavail);
1865             tswap32s(&stfs->f_files);
1866             tswap32s(&stfs->f_ffree);
1867             tswap32s(&stfs->f_fsid.val[0]);
1868             tswap32s(&stfs->f_fsid.val[1]);
1869             tswap32s(&stfs->f_namelen);
1870         }
1871         break;
1872     case TARGET_NR_fstatfs:
1873         stfs = (void *)arg2;
1874         ret = get_errno(sys_fstatfs(arg1, stfs));
1875         goto convert_statfs;
1876     case TARGET_NR_ioperm:
1877         goto unimplemented;
1878     case TARGET_NR_socketcall:
1879         ret = do_socketcall(arg1, (int32_t *)arg2);
1880         break;
1881     case TARGET_NR_syslog:
1882         goto unimplemented;
1883     case TARGET_NR_setitimer:
1884         {
1885             struct target_itimerval *target_value = (void *)arg2;
1886             struct target_itimerval *target_ovalue = (void *)arg3;
1887             struct itimerval value, ovalue, *pvalue;
1888
1889             if (target_value) {
1890                 pvalue = &value;
1891                 target_to_host_timeval(&pvalue->it_interval,
1892                                        &target_value->it_interval);
1893                 target_to_host_timeval(&pvalue->it_value,
1894                                        &target_value->it_value);
1895             } else {
1896                 pvalue = NULL;
1897             }
1898             ret = get_errno(setitimer(arg1, pvalue, &ovalue));
1899             if (!is_error(ret) && target_ovalue) {
1900                 host_to_target_timeval(&target_ovalue->it_interval,
1901                                        &ovalue.it_interval);
1902                 host_to_target_timeval(&target_ovalue->it_value,
1903                                        &ovalue.it_value);
1904             }
1905         }
1906         break;
1907     case TARGET_NR_getitimer:
1908         {
1909             struct target_itimerval *target_value = (void *)arg2;
1910             struct itimerval value;
1911
1912             ret = get_errno(getitimer(arg1, &value));
1913             if (!is_error(ret) && target_value) {
1914                 host_to_target_timeval(&target_value->it_interval,
1915                                        &value.it_interval);
1916                 host_to_target_timeval(&target_value->it_value,
1917                                        &value.it_value);
1918             }
1919         }
1920         break;
1921     case TARGET_NR_stat:
1922         ret = get_errno(stat(path((const char *)arg1), &st));
1923         goto do_stat;
1924     case TARGET_NR_lstat:
1925         ret = get_errno(lstat(path((const char *)arg1), &st));
1926         goto do_stat;
1927     case TARGET_NR_fstat:
1928         {
1929             ret = get_errno(fstat(arg1, &st));
1930         do_stat:
1931             if (!is_error(ret)) {
1932                 struct target_stat *target_st = (void *)arg2;
1933                 target_st->st_dev = tswap16(st.st_dev);
1934                 target_st->st_ino = tswapl(st.st_ino);
1935                 target_st->st_mode = tswap16(st.st_mode);
1936                 target_st->st_nlink = tswap16(st.st_nlink);
1937                 target_st->st_uid = tswap16(st.st_uid);
1938                 target_st->st_gid = tswap16(st.st_gid);
1939                 target_st->st_rdev = tswap16(st.st_rdev);
1940                 target_st->st_size = tswapl(st.st_size);
1941                 target_st->st_blksize = tswapl(st.st_blksize);
1942                 target_st->st_blocks = tswapl(st.st_blocks);
1943                 target_st->target_st_atime = tswapl(st.st_atime);
1944                 target_st->target_st_mtime = tswapl(st.st_mtime);
1945                 target_st->target_st_ctime = tswapl(st.st_ctime);
1946             }
1947         }
1948         break;
1949     case TARGET_NR_olduname:
1950         goto unimplemented;
1951     case TARGET_NR_iopl:
1952         goto unimplemented;
1953     case TARGET_NR_vhangup:
1954         ret = get_errno(vhangup());
1955         break;
1956     case TARGET_NR_idle:
1957         goto unimplemented;
1958     case TARGET_NR_wait4:
1959         {
1960             int status;
1961             target_long *status_ptr = (void *)arg2;
1962             struct rusage rusage, *rusage_ptr;
1963             struct target_rusage *target_rusage = (void *)arg4;
1964             if (target_rusage)
1965                 rusage_ptr = &rusage;
1966             else
1967                 rusage_ptr = NULL;
1968             ret = get_errno(wait4(arg1, &status, arg3, rusage_ptr));
1969             if (!is_error(ret)) {
1970                 if (status_ptr)
1971                     *status_ptr = tswap32(status);
1972                 if (target_rusage) {
1973                     host_to_target_rusage(target_rusage, &rusage);
1974                 }
1975             }
1976         }
1977         break;
1978     case TARGET_NR_swapoff:
1979         ret = get_errno(swapoff((const char *)arg1));
1980         break;
1981     case TARGET_NR_sysinfo:
1982         goto unimplemented;
1983     case TARGET_NR_ipc:
1984         goto unimplemented;
1985     case TARGET_NR_fsync:
1986         ret = get_errno(fsync(arg1));
1987         break;
1988     case TARGET_NR_clone:
1989         ret = get_errno(do_fork(cpu_env, arg1, arg2));
1990         break;
1991 #ifdef __NR_exit_group
1992         /* new thread calls */
1993     case TARGET_NR_exit_group:
1994         ret = get_errno(exit_group(arg1));
1995         break;
1996 #endif
1997     case TARGET_NR_setdomainname:
1998         ret = get_errno(setdomainname((const char *)arg1, arg2));
1999         break;
2000     case TARGET_NR_uname:
2001         /* no need to transcode because we use the linux syscall */
2002         ret = get_errno(sys_uname((struct new_utsname *)arg1));
2003         break;
2004 #ifdef TARGET_I386
2005     case TARGET_NR_modify_ldt:
2006         ret = get_errno(do_modify_ldt(cpu_env, arg1, (void *)arg2, arg3));
2007         break;
2008     case TARGET_NR_vm86old:
2009         goto unimplemented;
2010     case TARGET_NR_vm86:
2011         ret = do_vm86(cpu_env, arg1, (void *)arg2);
2012         break;
2013 #endif
2014     case TARGET_NR_adjtimex:
2015         goto unimplemented;
2016     case TARGET_NR_create_module:
2017     case TARGET_NR_init_module:
2018     case TARGET_NR_delete_module:
2019     case TARGET_NR_get_kernel_syms:
2020         goto unimplemented;
2021     case TARGET_NR_quotactl:
2022         goto unimplemented;
2023     case TARGET_NR_getpgid:
2024         ret = get_errno(getpgid(arg1));
2025         break;
2026     case TARGET_NR_fchdir:
2027         ret = get_errno(fchdir(arg1));
2028         break;
2029     case TARGET_NR_bdflush:
2030         goto unimplemented;
2031     case TARGET_NR_sysfs:
2032         goto unimplemented;
2033     case TARGET_NR_personality:
2034         ret = get_errno(personality(arg1));
2035         break;
2036     case TARGET_NR_afs_syscall:
2037         goto unimplemented;
2038     case TARGET_NR_setfsuid:
2039         ret = get_errno(setfsuid(arg1));
2040         break;
2041     case TARGET_NR_setfsgid:
2042         ret = get_errno(setfsgid(arg1));
2043         break;
2044     case TARGET_NR__llseek:
2045         {
2046             int64_t res;
2047             ret = get_errno(_llseek(arg1, arg2, arg3, &res, arg5));
2048             *(int64_t *)arg4 = tswap64(res);
2049         }
2050         break;
2051     case TARGET_NR_getdents:
2052 #if TARGET_LONG_SIZE != 4
2053 #error not supported
2054 #elif TARGET_LONG_SIZE == 4 && HOST_LONG_SIZE == 8
2055         {
2056             struct target_dirent *target_dirp = (void *)arg2;
2057             struct dirent *dirp;
2058             long count = arg3;
2059
2060             dirp = malloc(count);
2061             if (!dirp)
2062                 return -ENOMEM;
2063
2064             ret = get_errno(sys_getdents(arg1, dirp, count));
2065             if (!is_error(ret)) {
2066                 struct dirent *de;
2067                 struct target_dirent *tde;
2068                 int len = ret;
2069                 int reclen, treclen;
2070                 int count1, tnamelen;
2071
2072                 count1 = 0;
2073                 de = dirp;
2074                 tde = target_dirp;
2075                 while (len > 0) {
2076                     reclen = de->d_reclen;
2077                     treclen = reclen - (2 * (sizeof(long) - sizeof(target_long)));
2078                     tde->d_reclen = tswap16(treclen);
2079                     tde->d_ino = tswapl(de->d_ino);
2080                     tde->d_off = tswapl(de->d_off);
2081                     tnamelen = treclen - (2 * sizeof(target_long) + 2);
2082                     if (tnamelen > 256)
2083                         tnamelen = 256;
2084                     strncpy(tde->d_name, de->d_name, tnamelen);
2085                     de = (struct dirent *)((char *)de + reclen);
2086                     len -= reclen;
2087                     tde = (struct dirent *)((char *)tde + treclen);
2088                     count1 += treclen;
2089                 }
2090                 ret = count1;
2091             }
2092             free(dirp);
2093         }
2094 #else
2095         {
2096             struct dirent *dirp = (void *)arg2;
2097             long count = arg3;
2098
2099             ret = get_errno(sys_getdents(arg1, dirp, count));
2100             if (!is_error(ret)) {
2101                 struct dirent *de;
2102                 int len = ret;
2103                 int reclen;
2104                 de = dirp;
2105                 while (len > 0) {
2106                     reclen = de->d_reclen;
2107                     if (reclen > len)
2108                         break;
2109                     de->d_reclen = tswap16(reclen);
2110                     tswapls(&de->d_ino);
2111                     tswapls(&de->d_off);
2112                     de = (struct dirent *)((char *)de + reclen);
2113                     len -= reclen;
2114                 }
2115             }
2116         }
2117 #endif
2118         break;
2119     case TARGET_NR_getdents64:
2120         {
2121             struct dirent64 *dirp = (void *)arg2;
2122             long count = arg3;
2123             ret = get_errno(sys_getdents64(arg1, dirp, count));
2124             if (!is_error(ret)) {
2125                 struct dirent64 *de;
2126                 int len = ret;
2127                 int reclen;
2128                 de = dirp;
2129                 while (len > 0) {
2130                     reclen = de->d_reclen;
2131                     if (reclen > len)
2132                         break;
2133                     de->d_reclen = tswap16(reclen);
2134                     tswap64s(&de->d_ino);
2135                     tswap64s(&de->d_off);
2136                     de = (struct dirent64 *)((char *)de + reclen);
2137                     len -= reclen;
2138                 }
2139             }
2140         }
2141         break;
2142     case TARGET_NR__newselect:
2143         ret = do_select(arg1, (void *)arg2, (void *)arg3, (void *)arg4,
2144                         (void *)arg5);
2145         break;
2146     case TARGET_NR_poll:
2147         {
2148             struct target_pollfd *target_pfd = (void *)arg1;
2149             unsigned int nfds = arg2;
2150             int timeout = arg3;
2151             struct pollfd *pfd;
2152             unsigned int i;
2153
2154             pfd = alloca(sizeof(struct pollfd) * nfds);
2155             for(i = 0; i < nfds; i++) {
2156                 pfd[i].fd = tswap32(target_pfd[i].fd);
2157                 pfd[i].events = tswap16(target_pfd[i].events);
2158             }
2159             ret = get_errno(poll(pfd, nfds, timeout));
2160             if (!is_error(ret)) {
2161                 for(i = 0; i < nfds; i++) {
2162                     target_pfd[i].revents = tswap16(pfd[i].revents);
2163                 }
2164             }
2165         }
2166         break;
2167     case TARGET_NR_flock:
2168         /* NOTE: the flock constant seems to be the same for every
2169            Linux platform */
2170         ret = get_errno(flock(arg1, arg2));
2171         break;
2172     case TARGET_NR_readv:
2173         {
2174             int count = arg3;
2175             int i;
2176             struct iovec *vec;
2177             struct target_iovec *target_vec = (void *)arg2;
2178
2179             vec = alloca(count * sizeof(struct iovec));
2180             for(i = 0;i < count; i++) {
2181                 vec[i].iov_base = (void *)tswapl(target_vec[i].iov_base);
2182                 vec[i].iov_len = tswapl(target_vec[i].iov_len);
2183             }
2184             ret = get_errno(readv(arg1, vec, count));
2185         }
2186         break;
2187     case TARGET_NR_writev:
2188         {
2189             int count = arg3;
2190             int i;
2191             struct iovec *vec;
2192             struct target_iovec *target_vec = (void *)arg2;
2193
2194             vec = alloca(count * sizeof(struct iovec));
2195             for(i = 0;i < count; i++) {
2196                 vec[i].iov_base = (void *)tswapl(target_vec[i].iov_base);
2197                 vec[i].iov_len = tswapl(target_vec[i].iov_len);
2198             }
2199             ret = get_errno(writev(arg1, vec, count));
2200         }
2201         break;
2202     case TARGET_NR_getsid:
2203         ret = get_errno(getsid(arg1));
2204         break;
2205     case TARGET_NR_fdatasync:
2206         ret = get_errno(fdatasync(arg1));
2207         break;
2208     case TARGET_NR__sysctl:
2209         goto unimplemented;
2210     case TARGET_NR_sched_setparam:
2211         {
2212             struct sched_param *target_schp = (void *)arg2;
2213             struct sched_param schp;
2214             schp.sched_priority = tswap32(target_schp->sched_priority);
2215             ret = get_errno(sched_setparam(arg1, &schp));
2216         }
2217         break;
2218     case TARGET_NR_sched_getparam:
2219         {
2220             struct sched_param *target_schp = (void *)arg2;
2221             struct sched_param schp;
2222             ret = get_errno(sched_getparam(arg1, &schp));
2223             if (!is_error(ret)) {
2224                 target_schp->sched_priority = tswap32(schp.sched_priority);
2225             }
2226         }
2227         break;
2228     case TARGET_NR_sched_setscheduler:
2229         {
2230             struct sched_param *target_schp = (void *)arg3;
2231             struct sched_param schp;
2232             schp.sched_priority = tswap32(target_schp->sched_priority);
2233             ret = get_errno(sched_setscheduler(arg1, arg2, &schp));
2234         }
2235         break;
2236     case TARGET_NR_sched_getscheduler:
2237         ret = get_errno(sched_getscheduler(arg1));
2238         break;
2239     case TARGET_NR_sched_yield:
2240         ret = get_errno(sched_yield());
2241         break;
2242     case TARGET_NR_sched_get_priority_max:
2243         ret = get_errno(sched_get_priority_max(arg1));
2244         break;
2245     case TARGET_NR_sched_get_priority_min:
2246         ret = get_errno(sched_get_priority_min(arg1));
2247         break;
2248     case TARGET_NR_sched_rr_get_interval:
2249         {
2250             struct target_timespec *target_ts = (void *)arg2;
2251             struct timespec ts;
2252             ret = get_errno(sched_rr_get_interval(arg1, &ts));
2253             if (!is_error(ret)) {
2254                 target_ts->tv_sec = tswapl(ts.tv_sec);
2255                 target_ts->tv_nsec = tswapl(ts.tv_nsec);
2256             }
2257         }
2258         break;
2259     case TARGET_NR_nanosleep:
2260         {
2261             struct target_timespec *target_req = (void *)arg1;
2262             struct target_timespec *target_rem = (void *)arg2;
2263             struct timespec req, rem;
2264             req.tv_sec = tswapl(target_req->tv_sec);
2265             req.tv_nsec = tswapl(target_req->tv_nsec);
2266             ret = get_errno(nanosleep(&req, &rem));
2267             if (target_rem) {
2268                 target_rem->tv_sec = tswapl(rem.tv_sec);
2269                 target_rem->tv_nsec = tswapl(rem.tv_nsec);
2270             }
2271         }
2272         break;
2273     case TARGET_NR_setresuid:
2274         ret = get_errno(setresuid(low2highuid(arg1),
2275                                   low2highuid(arg2),
2276                                   low2highuid(arg3)));
2277         break;
2278     case TARGET_NR_getresuid:
2279         {
2280             int ruid, euid, suid;
2281             ret = get_errno(getresuid(&ruid, &euid, &suid));
2282             if (!is_error(ret)) {
2283                 *(uint16_t *)arg1 = tswap16(high2lowuid(ruid));
2284                 *(uint16_t *)arg2 = tswap16(high2lowuid(euid));
2285                 *(uint16_t *)arg3 = tswap16(high2lowuid(suid));
2286             }
2287         }
2288         break;
2289     case TARGET_NR_setresgid:
2290         ret = get_errno(setresgid(low2highgid(arg1),
2291                                   low2highgid(arg2),
2292                                   low2highgid(arg3)));
2293         break;
2294     case TARGET_NR_getresgid:
2295         {
2296             int rgid, egid, sgid;
2297             ret = get_errno(getresgid(&rgid, &egid, &sgid));
2298             if (!is_error(ret)) {
2299                 *(uint16_t *)arg1 = high2lowgid(tswap16(rgid));
2300                 *(uint16_t *)arg2 = high2lowgid(tswap16(egid));
2301                 *(uint16_t *)arg3 = high2lowgid(tswap16(sgid));
2302             }
2303         }
2304         break;
2305     case TARGET_NR_query_module:
2306         goto unimplemented;
2307     case TARGET_NR_nfsservctl:
2308         goto unimplemented;
2309     case TARGET_NR_prctl:
2310         goto unimplemented;
2311     case TARGET_NR_pread:
2312         page_unprotect_range((void *)arg2, arg3);
2313         ret = get_errno(pread(arg1, (void *)arg2, arg3, arg4));
2314         break;
2315     case TARGET_NR_pwrite:
2316         ret = get_errno(pwrite(arg1, (void *)arg2, arg3, arg4));
2317         break;
2318     case TARGET_NR_chown:
2319         ret = get_errno(chown((const char *)arg1, arg2, arg3));
2320         break;
2321     case TARGET_NR_getcwd:
2322         ret = get_errno(sys_getcwd1((char *)arg1, arg2));
2323         break;
2324     case TARGET_NR_capget:
2325         goto unimplemented;
2326     case TARGET_NR_capset:
2327         goto unimplemented;
2328     case TARGET_NR_sigaltstack:
2329         goto unimplemented;
2330     case TARGET_NR_sendfile:
2331         goto unimplemented;
2332     case TARGET_NR_getpmsg:
2333         goto unimplemented;
2334     case TARGET_NR_putpmsg:
2335         goto unimplemented;
2336     case TARGET_NR_vfork:
2337         ret = get_errno(do_fork(cpu_env, CLONE_VFORK | CLONE_VM | SIGCHLD, 0));
2338         break;
2339     case TARGET_NR_ugetrlimit:
2340     {
2341         struct rlimit rlim;
2342         ret = get_errno(getrlimit(arg1, &rlim));
2343         if (!is_error(ret)) {
2344             struct target_rlimit *target_rlim = (void *)arg2;
2345             target_rlim->rlim_cur = tswapl(rlim.rlim_cur);
2346             target_rlim->rlim_max = tswapl(rlim.rlim_max);
2347         }
2348         break;
2349     }
2350     case TARGET_NR_truncate64:
2351         goto unimplemented;
2352     case TARGET_NR_ftruncate64:
2353         goto unimplemented;
2354     case TARGET_NR_stat64:
2355         ret = get_errno(stat(path((const char *)arg1), &st));
2356         goto do_stat64;
2357     case TARGET_NR_lstat64:
2358         ret = get_errno(lstat(path((const char *)arg1), &st));
2359         goto do_stat64;
2360     case TARGET_NR_fstat64:
2361         {
2362             ret = get_errno(fstat(arg1, &st));
2363         do_stat64:
2364             if (!is_error(ret)) {
2365                 struct target_stat64 *target_st = (void *)arg2;
2366                 memset(target_st, 0, sizeof(struct target_stat64));
2367                 target_st->st_dev = tswap16(st.st_dev);
2368                 target_st->st_ino = tswap64(st.st_ino);
2369 #ifdef TARGET_STAT64_HAS_BROKEN_ST_INO
2370                 target_st->__st_ino = tswapl(st.st_ino);
2371 #endif
2372                 target_st->st_mode = tswap32(st.st_mode);
2373                 target_st->st_nlink = tswap32(st.st_nlink);
2374                 target_st->st_uid = tswapl(st.st_uid);
2375                 target_st->st_gid = tswapl(st.st_gid);
2376                 target_st->st_rdev = tswap16(st.st_rdev);
2377                 /* XXX: better use of kernel struct */
2378                 target_st->st_size = tswap64(st.st_size);
2379                 target_st->st_blksize = tswapl(st.st_blksize);
2380                 target_st->st_blocks = tswapl(st.st_blocks);
2381                 target_st->target_st_atime = tswapl(st.st_atime);
2382                 target_st->target_st_mtime = tswapl(st.st_mtime);
2383                 target_st->target_st_ctime = tswapl(st.st_ctime);
2384             }
2385         }
2386         break;
2387
2388     case TARGET_NR_lchown32:
2389         ret = get_errno(lchown((const char *)arg1, arg2, arg3));
2390         break;
2391     case TARGET_NR_getuid32:
2392         ret = get_errno(getuid());
2393         break;
2394     case TARGET_NR_getgid32:
2395         ret = get_errno(getgid());
2396         break;
2397     case TARGET_NR_geteuid32:
2398         ret = get_errno(geteuid());
2399         break;
2400     case TARGET_NR_getegid32:
2401         ret = get_errno(getegid());
2402         break;
2403     case TARGET_NR_setreuid32:
2404         ret = get_errno(setreuid(arg1, arg2));
2405         break;
2406     case TARGET_NR_setregid32:
2407         ret = get_errno(setregid(arg1, arg2));
2408         break;
2409     case TARGET_NR_getgroups32:
2410         goto unimplemented;
2411     case TARGET_NR_setgroups32:
2412         goto unimplemented;
2413     case TARGET_NR_fchown32:
2414         ret = get_errno(fchown(arg1, arg2, arg3));
2415         break;
2416     case TARGET_NR_setresuid32:
2417         ret = get_errno(setresuid(arg1, arg2, arg3));
2418         break;
2419     case TARGET_NR_getresuid32:
2420         {
2421             int ruid, euid, suid;
2422             ret = get_errno(getresuid(&ruid, &euid, &suid));
2423             if (!is_error(ret)) {
2424                 *(uint32_t *)arg1 = tswap32(ruid);
2425                 *(uint32_t *)arg2 = tswap32(euid);
2426                 *(uint32_t *)arg3 = tswap32(suid);
2427             }
2428         }
2429         break;
2430     case TARGET_NR_setresgid32:
2431         ret = get_errno(setresgid(arg1, arg2, arg3));
2432         break;
2433     case TARGET_NR_getresgid32:
2434         {
2435             int rgid, egid, sgid;
2436             ret = get_errno(getresgid(&rgid, &egid, &sgid));
2437             if (!is_error(ret)) {
2438                 *(uint32_t *)arg1 = tswap32(rgid);
2439                 *(uint32_t *)arg2 = tswap32(egid);
2440                 *(uint32_t *)arg3 = tswap32(sgid);
2441             }
2442         }
2443         break;
2444     case TARGET_NR_chown32:
2445         ret = get_errno(chown((const char *)arg1, arg2, arg3));
2446         break;
2447     case TARGET_NR_setuid32:
2448         ret = get_errno(setuid(arg1));
2449         break;
2450     case TARGET_NR_setgid32:
2451         ret = get_errno(setgid(arg1));
2452         break;
2453     case TARGET_NR_setfsuid32:
2454         ret = get_errno(setfsuid(arg1));
2455         break;
2456     case TARGET_NR_setfsgid32:
2457         ret = get_errno(setfsgid(arg1));
2458         break;
2459     case TARGET_NR_pivot_root:
2460         goto unimplemented;
2461     case TARGET_NR_mincore:
2462         goto unimplemented;
2463     case TARGET_NR_madvise:
2464         goto unimplemented;
2465 #if TARGET_LONG_BITS == 32
2466     case TARGET_NR_fcntl64:
2467     {
2468         struct flock64 fl;
2469         struct target_flock64 *target_fl = (void *)arg3;
2470
2471         switch(arg2) {
2472         case F_GETLK64:
2473             ret = get_errno(fcntl(arg1, arg2, &fl));
2474             if (ret == 0) {
2475                 target_fl->l_type = tswap16(fl.l_type);
2476                 target_fl->l_whence = tswap16(fl.l_whence);
2477                 target_fl->l_start = tswap64(fl.l_start);
2478                 target_fl->l_len = tswap64(fl.l_len);
2479                 target_fl->l_pid = tswapl(fl.l_pid);
2480             }
2481             break;
2482
2483         case F_SETLK64:
2484         case F_SETLKW64:
2485             fl.l_type = tswap16(target_fl->l_type);
2486             fl.l_whence = tswap16(target_fl->l_whence);
2487             fl.l_start = tswap64(target_fl->l_start);
2488             fl.l_len = tswap64(target_fl->l_len);
2489             fl.l_pid = tswapl(target_fl->l_pid);
2490             ret = get_errno(fcntl(arg1, arg2, &fl));
2491             break;
2492         default:
2493             ret = get_errno(do_fcntl(arg1, arg2, arg3));
2494             break;
2495         }
2496         break;
2497     }
2498 #endif
2499     case TARGET_NR_security:
2500         goto unimplemented;
2501     case TARGET_NR_gettid:
2502         ret = get_errno(gettid());
2503         break;
2504     case TARGET_NR_readahead:
2505         goto unimplemented;
2506     case TARGET_NR_setxattr:
2507     case TARGET_NR_lsetxattr:
2508     case TARGET_NR_fsetxattr:
2509     case TARGET_NR_getxattr:
2510     case TARGET_NR_lgetxattr:
2511     case TARGET_NR_fgetxattr:
2512     case TARGET_NR_listxattr:
2513     case TARGET_NR_llistxattr:
2514     case TARGET_NR_flistxattr:
2515     case TARGET_NR_removexattr:
2516     case TARGET_NR_lremovexattr:
2517     case TARGET_NR_fremovexattr:
2518         goto unimplemented_nowarn;
2519     case TARGET_NR_set_thread_area:
2520     case TARGET_NR_get_thread_area:
2521         goto unimplemented_nowarn;
2522     default:
2523     unimplemented:
2524         gemu_log("qemu: Unsupported syscall: %d\n", num);
2525     unimplemented_nowarn:
2526         ret = -ENOSYS;
2527         break;
2528     }
2529  fail:
2530     return ret;
2531 }
2532