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 #if defined(__alpha__)
 214 #define HOST_HZ 1024
 215 #else
 216 #define HOST_HZ 100
 217 #endif
 218
 219 static inline long host_to_target_clock_t(long ticks)
 220 {
 221 #if HOST_HZ == TARGET_HZ
 222     return ticks;
 223 #else
 224     return ((int64_t)ticks * TARGET_HZ) / HOST_HZ;
 225 #endif
 226 }
 227
 228 static inline void host_to_target_rusage(struct target_rusage *target_rusage,
 229                                          const struct rusage *rusage)
 230 {
 231     target_rusage->ru_utime.tv_sec = tswapl(rusage->ru_utime.tv_sec);
 232     target_rusage->ru_utime.tv_usec = tswapl(rusage->ru_utime.tv_usec);
 233     target_rusage->ru_stime.tv_sec = tswapl(rusage->ru_stime.tv_sec);
 234     target_rusage->ru_stime.tv_usec = tswapl(rusage->ru_stime.tv_usec);
 235     target_rusage->ru_maxrss = tswapl(rusage->ru_maxrss);
 236     target_rusage->ru_ixrss = tswapl(rusage->ru_ixrss);
 237     target_rusage->ru_idrss = tswapl(rusage->ru_idrss);
 238     target_rusage->ru_isrss = tswapl(rusage->ru_isrss);
 239     target_rusage->ru_minflt = tswapl(rusage->ru_minflt);
 240     target_rusage->ru_majflt = tswapl(rusage->ru_majflt);
 241     target_rusage->ru_nswap = tswapl(rusage->ru_nswap);
 242     target_rusage->ru_inblock = tswapl(rusage->ru_inblock);
 243     target_rusage->ru_oublock = tswapl(rusage->ru_oublock);
 244     target_rusage->ru_msgsnd = tswapl(rusage->ru_msgsnd);
 245     target_rusage->ru_msgrcv = tswapl(rusage->ru_msgrcv);
 246     target_rusage->ru_nsignals = tswapl(rusage->ru_nsignals);
 247     target_rusage->ru_nvcsw = tswapl(rusage->ru_nvcsw);
 248     target_rusage->ru_nivcsw = tswapl(rusage->ru_nivcsw);
 249 }
 250
 251 static inline void target_to_host_timeval(struct timeval *tv,
 252                                           const struct target_timeval *target_tv)
 253 {
 254     tv->tv_sec = tswapl(target_tv->tv_sec);
 255     tv->tv_usec = tswapl(target_tv->tv_usec);
 256 }
 257
 258 static inline void host_to_target_timeval(struct target_timeval *target_tv,
 259                                           const struct timeval *tv)
 260 {
 261     target_tv->tv_sec = tswapl(tv->tv_sec);
 262     target_tv->tv_usec = tswapl(tv->tv_usec);
 263 }
 264
 265
 266 static long do_select(long n,
 267                       target_long *target_rfds, target_long *target_wfds,
 268                       target_long *target_efds, struct target_timeval *target_tv)
 269 {
 270     fd_set rfds, wfds, efds;
 271     fd_set *rfds_ptr, *wfds_ptr, *efds_ptr;
 272     struct timeval tv, *tv_ptr;
 273     long ret;
 274
 275     rfds_ptr = target_to_host_fds(&rfds, target_rfds, n);
 276     wfds_ptr = target_to_host_fds(&wfds, target_wfds, n);
 277     efds_ptr = target_to_host_fds(&efds, target_efds, n);
 278
 279     if (target_tv) {
 280         target_to_host_timeval(&tv, target_tv);
 281         tv_ptr = &tv;
 282     } else {
 283         tv_ptr = NULL;
 284     }
 285     ret = get_errno(select(n, rfds_ptr, wfds_ptr, efds_ptr, tv_ptr));
 286     if (!is_error(ret)) {
 287         host_to_target_fds(target_rfds, rfds_ptr, n);
 288         host_to_target_fds(target_wfds, wfds_ptr, n);
 289         host_to_target_fds(target_efds, efds_ptr, n);
 290
 291         if (target_tv) {
 292             host_to_target_timeval(target_tv, &tv);
 293         }
 294     }
 295     return ret;
 296 }
 297
 298 static inline void target_to_host_sockaddr(struct sockaddr *addr,
 299                                            struct target_sockaddr *target_addr,
 300                                            socklen_t len)
 301 {
 302     memcpy(addr, target_addr, len);
 303     addr->sa_family = tswap16(target_addr->sa_family);
 304 }
 305
 306 static inline void host_to_target_sockaddr(struct target_sockaddr *target_addr,
 307                                            struct sockaddr *addr,
 308                                            socklen_t len)
 309 {
 310     memcpy(target_addr, addr, len);
 311     target_addr->sa_family = tswap16(addr->sa_family);
 312 }
 313
 314 static inline void target_to_host_cmsg(struct msghdr *msgh,
 315                                        struct target_msghdr *target_msgh)
 316 {
 317     struct cmsghdr *cmsg = CMSG_FIRSTHDR(msgh);
 318     struct target_cmsghdr *target_cmsg = TARGET_CMSG_FIRSTHDR(target_msgh);
 319     socklen_t space = 0;
 320
 321     while (cmsg && target_cmsg) {
 322         void *data = CMSG_DATA(cmsg);
 323         void *target_data = TARGET_CMSG_DATA(target_cmsg);
 324
 325         int len = tswapl(target_cmsg->cmsg_len)
 326                   - TARGET_CMSG_ALIGN(sizeof (struct target_cmsghdr));
 327
 328         space += CMSG_SPACE(len);
 329         if (space > msgh->msg_controllen) {
 330             space -= CMSG_SPACE(len);
 331             gemu_log("Host cmsg overflow");
 332             break;
 333         }
 334
 335         cmsg->cmsg_level = tswap32(target_cmsg->cmsg_level);
 336         cmsg->cmsg_type = tswap32(target_cmsg->cmsg_type);
 337         cmsg->cmsg_len = CMSG_LEN(len);
 338
 339         if (cmsg->cmsg_level != SOL_SOCKET || cmsg->cmsg_type != SCM_RIGHTS) {
 340             gemu_log("Unsupported ancillary data: %d/%d\n", cmsg->cmsg_level, cmsg->cmsg_type);
 341             memcpy(data, target_data, len);
 342         } else {
 343             int *fd = (int *)data;
 344             int *target_fd = (int *)target_data;
 345             int i, numfds = len / sizeof(int);
 346
 347             for (i = 0; i < numfds; i++)
 348                 fd[i] = tswap32(target_fd[i]);
 349         }
 350
 351         cmsg = CMSG_NXTHDR(msgh, cmsg);
 352         target_cmsg = TARGET_CMSG_NXTHDR(target_msgh, target_cmsg);
 353     }
 354
 355     msgh->msg_controllen = space;
 356 }
 357
 358 static inline void host_to_target_cmsg(struct target_msghdr *target_msgh,
 359                                        struct msghdr *msgh)
 360 {
 361     struct cmsghdr *cmsg = CMSG_FIRSTHDR(msgh);
 362     struct target_cmsghdr *target_cmsg = TARGET_CMSG_FIRSTHDR(target_msgh);
 363     socklen_t space = 0;
 364
 365     while (cmsg && target_cmsg) {
 366         void *data = CMSG_DATA(cmsg);
 367         void *target_data = TARGET_CMSG_DATA(target_cmsg);
 368
 369         int len = cmsg->cmsg_len - CMSG_ALIGN(sizeof (struct cmsghdr));
 370
 371         space += TARGET_CMSG_SPACE(len);
 372         if (space > tswapl(target_msgh->msg_controllen)) {
 373             space -= TARGET_CMSG_SPACE(len);
 374             gemu_log("Target cmsg overflow");
 375             break;
 376         }
 377
 378         target_cmsg->cmsg_level = tswap32(cmsg->cmsg_level);
 379         target_cmsg->cmsg_type = tswap32(cmsg->cmsg_type);
 380         target_cmsg->cmsg_len = tswapl(TARGET_CMSG_LEN(len));
 381
 382         if (cmsg->cmsg_level != SOL_SOCKET || cmsg->cmsg_type != SCM_RIGHTS) {
 383             gemu_log("Unsupported ancillary data: %d/%d\n", cmsg->cmsg_level, cmsg->cmsg_type);
 384             memcpy(target_data, data, len);
 385         } else {
 386             int *fd = (int *)data;
 387             int *target_fd = (int *)target_data;
 388             int i, numfds = len / sizeof(int);
 389
 390             for (i = 0; i < numfds; i++)
 391                 target_fd[i] = tswap32(fd[i]);
 392         }
 393
 394         cmsg = CMSG_NXTHDR(msgh, cmsg);
 395         target_cmsg = TARGET_CMSG_NXTHDR(target_msgh, target_cmsg);
 396     }
 397
 398     msgh->msg_controllen = tswapl(space);
 399 }
 400
 401 static long do_setsockopt(int sockfd, int level, int optname,
 402                           void *optval, socklen_t optlen)
 403 {
 404     if (level == SOL_TCP) {
 405         /* TCP options all take an 'int' value.  */
 406         int val;
 407
 408         if (optlen < sizeof(uint32_t))
 409             return -EINVAL;
 410
 411         val = tswap32(*(uint32_t *)optval);
 412         return get_errno(setsockopt(sockfd, level, optname, &val, sizeof(val)));
 413     }
 414
 415     else if (level != SOL_SOCKET) {
 416         gemu_log("Unsupported setsockopt level: %d\n", level);
 417         return -ENOSYS;
 418     }
 419
 420     switch (optname) {
 421     /* Options with 'int' argument.  */
 422     case SO_DEBUG:
 423     case SO_REUSEADDR:
 424     case SO_TYPE:
 425     case SO_ERROR:
 426     case SO_DONTROUTE:
 427     case SO_BROADCAST:
 428     case SO_SNDBUF:
 429     case SO_RCVBUF:
 430     case SO_KEEPALIVE:
 431     case SO_OOBINLINE:
 432     case SO_NO_CHECK:
 433     case SO_PRIORITY:
 434     case SO_BSDCOMPAT:
 435     case SO_PASSCRED:
 436     case SO_TIMESTAMP:
 437     case SO_RCVLOWAT:
 438     case SO_RCVTIMEO:
 439     case SO_SNDTIMEO:
 440     {
 441         int val;
 442         if (optlen < sizeof(uint32_t))
 443             return -EINVAL;
 444         val = tswap32(*(uint32_t *)optval);
 445         return get_errno(setsockopt(sockfd, level, optname, &val, sizeof(val)));
 446     }
 447
 448     default:
 449         gemu_log("Unsupported setsockopt SOL_SOCKET option: %d\n", optname);
 450         return -ENOSYS;
 451     }
 452 }
 453
 454 static long do_getsockopt(int sockfd, int level, int optname,
 455                           void *optval, socklen_t *optlen)
 456 {
 457     gemu_log("getsockopt not yet supported\n");
 458     return -ENOSYS;
 459 }
 460
 461 static long do_socketcall(int num, int32_t *vptr)
 462 {
 463     long ret;
 464
 465     switch(num) {
 466     case SOCKOP_socket:
 467         {
 468             int domain = tswap32(vptr[0]);
 469             int type = tswap32(vptr[1]);
 470             int protocol = tswap32(vptr[2]);
 471
 472             ret = get_errno(socket(domain, type, protocol));
 473         }
 474         break;
 475     case SOCKOP_bind:
 476         {
 477             int sockfd = tswap32(vptr[0]);
 478             void *target_addr = (void *)tswap32(vptr[1]);
 479             socklen_t addrlen = tswap32(vptr[2]);
 480             void *addr = alloca(addrlen);
 481
 482             target_to_host_sockaddr(addr, target_addr, addrlen);
 483             ret = get_errno(bind(sockfd, addr, addrlen));
 484         }
 485         break;
 486     case SOCKOP_connect:
 487         {
 488             int sockfd = tswap32(vptr[0]);
 489             void *target_addr = (void *)tswap32(vptr[1]);
 490             socklen_t addrlen = tswap32(vptr[2]);
 491             void *addr = alloca(addrlen);
 492
 493             target_to_host_sockaddr(addr, target_addr, addrlen);
 494             ret = get_errno(connect(sockfd, addr, addrlen));
 495         }
 496         break;
 497     case SOCKOP_listen:
 498         {
 499             int sockfd = tswap32(vptr[0]);
 500             int backlog = tswap32(vptr[1]);
 501
 502             ret = get_errno(listen(sockfd, backlog));
 503         }
 504         break;
 505     case SOCKOP_accept:
 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(accept(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_getsockname:
 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(getsockname(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_getpeername:
 536         {
 537             int sockfd = tswap32(vptr[0]);
 538             void *target_addr = (void *)tswap32(vptr[1]);
 539             uint32_t *target_addrlen = (void *)tswap32(vptr[2]);
 540             socklen_t addrlen = tswap32(*target_addrlen);
 541             void *addr = alloca(addrlen);
 542
 543             ret = get_errno(getpeername(sockfd, addr, &addrlen));
 544             if (!is_error(ret)) {
 545                 host_to_target_sockaddr(target_addr, addr, addrlen);
 546                 *target_addrlen = tswap32(addrlen);
 547             }
 548         }
 549         break;
 550     case SOCKOP_socketpair:
 551         {
 552             int domain = tswap32(vptr[0]);
 553             int type = tswap32(vptr[1]);
 554             int protocol = tswap32(vptr[2]);
 555             int32_t *target_tab = (void *)tswap32(vptr[3]);
 556             int tab[2];
 557
 558             ret = get_errno(socketpair(domain, type, protocol, tab));
 559             if (!is_error(ret)) {
 560                 target_tab[0] = tswap32(tab[0]);
 561                 target_tab[1] = tswap32(tab[1]);
 562             }
 563         }
 564         break;
 565     case SOCKOP_send:
 566         {
 567             int sockfd = tswap32(vptr[0]);
 568             void *msg = (void *)tswap32(vptr[1]);
 569             size_t len = tswap32(vptr[2]);
 570             int flags = tswap32(vptr[3]);
 571
 572             ret = get_errno(send(sockfd, msg, len, flags));
 573         }
 574         break;
 575     case SOCKOP_recv:
 576         {
 577             int sockfd = tswap32(vptr[0]);
 578             void *msg = (void *)tswap32(vptr[1]);
 579             size_t len = tswap32(vptr[2]);
 580             int flags = tswap32(vptr[3]);
 581
 582             ret = get_errno(recv(sockfd, msg, len, flags));
 583         }
 584         break;
 585     case SOCKOP_sendto:
 586         {
 587             int sockfd = tswap32(vptr[0]);
 588             void *msg = (void *)tswap32(vptr[1]);
 589             size_t len = tswap32(vptr[2]);
 590             int flags = tswap32(vptr[3]);
 591             void *target_addr = (void *)tswap32(vptr[4]);
 592             socklen_t addrlen = tswap32(vptr[5]);
 593             void *addr = alloca(addrlen);
 594
 595             target_to_host_sockaddr(addr, target_addr, addrlen);
 596             ret = get_errno(sendto(sockfd, msg, len, flags, addr, addrlen));
 597         }
 598         break;
 599     case SOCKOP_recvfrom:
 600         {
 601             int sockfd = tswap32(vptr[0]);
 602             void *msg = (void *)tswap32(vptr[1]);
 603             size_t len = tswap32(vptr[2]);
 604             int flags = tswap32(vptr[3]);
 605             void *target_addr = (void *)tswap32(vptr[4]);
 606             uint32_t *target_addrlen = (void *)tswap32(vptr[5]);
 607             socklen_t addrlen = tswap32(*target_addrlen);
 608             void *addr = alloca(addrlen);
 609
 610             ret = get_errno(recvfrom(sockfd, msg, len, flags, addr, &addrlen));
 611             if (!is_error(ret)) {
 612                 host_to_target_sockaddr(target_addr, addr, addrlen);
 613                 *target_addrlen = tswap32(addrlen);
 614             }
 615         }
 616         break;
 617     case SOCKOP_shutdown:
 618         {
 619             int sockfd = tswap32(vptr[0]);
 620             int how = tswap32(vptr[1]);
 621
 622             ret = get_errno(shutdown(sockfd, how));
 623         }
 624         break;
 625     case SOCKOP_sendmsg:
 626     case SOCKOP_recvmsg:
 627         {
 628             int fd;
 629             struct target_msghdr *msgp;
 630             struct msghdr msg;
 631             int flags, count, i;
 632             struct iovec *vec;
 633             struct target_iovec *target_vec;
 634
 635             msgp = (void *)tswap32(vptr[1]);
 636             msg.msg_name = (void *)tswapl(msgp->msg_name);
 637             msg.msg_namelen = tswapl(msgp->msg_namelen);
 638             msg.msg_controllen = 2 * tswapl(msgp->msg_controllen);
 639             msg.msg_control = alloca(msg.msg_controllen);
 640             msg.msg_flags = tswap32(msgp->msg_flags);
 641
 642             count = tswapl(msgp->msg_iovlen);
 643             vec = alloca(count * sizeof(struct iovec));
 644             target_vec = (void *)tswapl(msgp->msg_iov);
 645             for(i = 0;i < count; i++) {
 646                 vec[i].iov_base = (void *)tswapl(target_vec[i].iov_base);
 647                 vec[i].iov_len = tswapl(target_vec[i].iov_len);
 648             }
 649             msg.msg_iovlen = count;
 650             msg.msg_iov = vec;
 651
 652             fd = tswap32(vptr[0]);
 653             flags = tswap32(vptr[2]);
 654             if (num == SOCKOP_sendmsg) {
 655                 target_to_host_cmsg(&msg, msgp);
 656                 ret = get_errno(sendmsg(fd, &msg, flags));
 657             } else {
 658                 ret = get_errno(recvmsg(fd, &msg, flags));
 659                 if (!is_error(ret))
 660                   host_to_target_cmsg(msgp, &msg);
 661             }
 662         }
 663         break;
 664     case SOCKOP_setsockopt:
 665         {
 666             int sockfd = tswap32(vptr[0]);
 667             int level = tswap32(vptr[1]);
 668             int optname = tswap32(vptr[2]);
 669             void *optval = (void *)tswap32(vptr[3]);
 670             socklen_t optlen = tswap32(vptr[4]);
 671
 672             ret = do_setsockopt(sockfd, level, optname, optval, optlen);
 673         }
 674         break;
 675     case SOCKOP_getsockopt:
 676         {
 677             int sockfd = tswap32(vptr[0]);
 678             int level = tswap32(vptr[1]);
 679             int optname = tswap32(vptr[2]);
 680             void *optval = (void *)tswap32(vptr[3]);
 681             uint32_t *target_len = (void *)tswap32(vptr[4]);
 682             socklen_t optlen = tswap32(*target_len);
 683
 684             ret = do_getsockopt(sockfd, level, optname, optval, &optlen);
 685             if (!is_error(ret))
 686                 *target_len = tswap32(optlen);
 687         }
 688         break;
 689     default:
 690         gemu_log("Unsupported socketcall: %d\n", num);
 691         ret = -ENOSYS;
 692         break;
 693     }
 694     return ret;
 695 }
 696
 697 /* kernel structure types definitions */
 698 #define IFNAMSIZ        16
 699
 700 #define STRUCT(name, list...) STRUCT_ ## name,
 701 #define STRUCT_SPECIAL(name) STRUCT_ ## name,
 702 enum {
 703 #include "syscall_types.h"
 704 };
 705 #undef STRUCT
 706 #undef STRUCT_SPECIAL
 707
 708 #define STRUCT(name, list...) const argtype struct_ ## name ## _def[] = { list, TYPE_NULL };
 709 #define STRUCT_SPECIAL(name)
 710 #include "syscall_types.h"
 711 #undef STRUCT
 712 #undef STRUCT_SPECIAL
 713
 714 typedef struct IOCTLEntry {
 715     unsigned int target_cmd;
 716     unsigned int host_cmd;
 717     const char *name;
 718     int access;
 719     const argtype arg_type[5];
 720 } IOCTLEntry;
 721
 722 #define IOC_R 0x0001
 723 #define IOC_W 0x0002
 724 #define IOC_RW (IOC_R | IOC_W)
 725
 726 #define MAX_STRUCT_SIZE 4096
 727
 728 IOCTLEntry ioctl_entries[] = {
 729 #define IOCTL(cmd, access, types...) \
 730     { TARGET_ ## cmd, cmd, #cmd, access, { types } },
 731 #include "ioctls.h"
 732     { 0, 0, },
 733 };
 734
 735 static long do_ioctl(long fd, long cmd, long arg)
 736 {
 737     const IOCTLEntry *ie;
 738     const argtype *arg_type;
 739     long ret;
 740     uint8_t buf_temp[MAX_STRUCT_SIZE];
 741
 742     ie = ioctl_entries;
 743     for(;;) {
 744         if (ie->target_cmd == 0) {
 745             gemu_log("Unsupported ioctl: cmd=0x%04lx\n", cmd);
 746             return -ENOSYS;
 747         }
 748         if (ie->target_cmd == cmd)
 749             break;
 750         ie++;
 751     }
 752     arg_type = ie->arg_type;
 753 #if defined(DEBUG)
 754     gemu_log("ioctl: cmd=0x%04lx (%s)\n", cmd, ie->name);
 755 #endif
 756     switch(arg_type[0]) {
 757     case TYPE_NULL:
 758         /* no argument */
 759         ret = get_errno(ioctl(fd, ie->host_cmd));
 760         break;
 761     case TYPE_PTRVOID:
 762     case TYPE_INT:
 763         /* int argment */
 764         ret = get_errno(ioctl(fd, ie->host_cmd, arg));
 765         break;
 766     case TYPE_PTR:
 767         arg_type++;
 768         switch(ie->access) {
 769         case IOC_R:
 770             ret = get_errno(ioctl(fd, ie->host_cmd, buf_temp));
 771             if (!is_error(ret)) {
 772                 thunk_convert((void *)arg, buf_temp, arg_type, THUNK_TARGET);
 773             }
 774             break;
 775         case IOC_W:
 776             thunk_convert(buf_temp, (void *)arg, arg_type, THUNK_HOST);
 777             ret = get_errno(ioctl(fd, ie->host_cmd, buf_temp));
 778             break;
 779         default:
 780         case IOC_RW:
 781             thunk_convert(buf_temp, (void *)arg, arg_type, THUNK_HOST);
 782             ret = get_errno(ioctl(fd, ie->host_cmd, buf_temp));
 783             if (!is_error(ret)) {
 784                 thunk_convert((void *)arg, buf_temp, arg_type, THUNK_TARGET);
 785             }
 786             break;
 787         }
 788         break;
 789     default:
 790         gemu_log("Unsupported ioctl type: cmd=0x%04lx type=%d\n", cmd, arg_type[0]);
 791         ret = -ENOSYS;
 792         break;
 793     }
 794     return ret;
 795 }
 796
 797 bitmask_transtbl iflag_tbl[] = {
 798         { TARGET_IGNBRK, TARGET_IGNBRK, IGNBRK, IGNBRK },
 799         { TARGET_BRKINT, TARGET_BRKINT, BRKINT, BRKINT },
 800         { TARGET_IGNPAR, TARGET_IGNPAR, IGNPAR, IGNPAR },
 801         { TARGET_PARMRK, TARGET_PARMRK, PARMRK, PARMRK },
 802         { TARGET_INPCK, TARGET_INPCK, INPCK, INPCK },
 803         { TARGET_ISTRIP, TARGET_ISTRIP, ISTRIP, ISTRIP },
 804         { TARGET_INLCR, TARGET_INLCR, INLCR, INLCR },
 805         { TARGET_IGNCR, TARGET_IGNCR, IGNCR, IGNCR },
 806         { TARGET_ICRNL, TARGET_ICRNL, ICRNL, ICRNL },
 807         { TARGET_IUCLC, TARGET_IUCLC, IUCLC, IUCLC },
 808         { TARGET_IXON, TARGET_IXON, IXON, IXON },
 809         { TARGET_IXANY, TARGET_IXANY, IXANY, IXANY },
 810         { TARGET_IXOFF, TARGET_IXOFF, IXOFF, IXOFF },
 811         { TARGET_IMAXBEL, TARGET_IMAXBEL, IMAXBEL, IMAXBEL },
 812         { 0, 0, 0, 0 }
 813 };
 814
 815 bitmask_transtbl oflag_tbl[] = {
 816         { TARGET_OPOST, TARGET_OPOST, OPOST, OPOST },
 817         { TARGET_OLCUC, TARGET_OLCUC, OLCUC, OLCUC },
 818         { TARGET_ONLCR, TARGET_ONLCR, ONLCR, ONLCR },
 819         { TARGET_OCRNL, TARGET_OCRNL, OCRNL, OCRNL },
 820         { TARGET_ONOCR, TARGET_ONOCR, ONOCR, ONOCR },
 821         { TARGET_ONLRET, TARGET_ONLRET, ONLRET, ONLRET },
 822         { TARGET_OFILL, TARGET_OFILL, OFILL, OFILL },
 823         { TARGET_OFDEL, TARGET_OFDEL, OFDEL, OFDEL },
 824         { TARGET_NLDLY, TARGET_NL0, NLDLY, NL0 },
 825         { TARGET_NLDLY, TARGET_NL1, NLDLY, NL1 },
 826         { TARGET_CRDLY, TARGET_CR0, CRDLY, CR0 },
 827         { TARGET_CRDLY, TARGET_CR1, CRDLY, CR1 },
 828         { TARGET_CRDLY, TARGET_CR2, CRDLY, CR2 },
 829         { TARGET_CRDLY, TARGET_CR3, CRDLY, CR3 },
 830         { TARGET_TABDLY, TARGET_TAB0, TABDLY, TAB0 },
 831         { TARGET_TABDLY, TARGET_TAB1, TABDLY, TAB1 },
 832         { TARGET_TABDLY, TARGET_TAB2, TABDLY, TAB2 },
 833         { TARGET_TABDLY, TARGET_TAB3, TABDLY, TAB3 },
 834         { TARGET_BSDLY, TARGET_BS0, BSDLY, BS0 },
 835         { TARGET_BSDLY, TARGET_BS1, BSDLY, BS1 },
 836         { TARGET_VTDLY, TARGET_VT0, VTDLY, VT0 },
 837         { TARGET_VTDLY, TARGET_VT1, VTDLY, VT1 },
 838         { TARGET_FFDLY, TARGET_FF0, FFDLY, FF0 },
 839         { TARGET_FFDLY, TARGET_FF1, FFDLY, FF1 },
 840         { 0, 0, 0, 0 }
 841 };
 842
 843 bitmask_transtbl cflag_tbl[] = {
 844         { TARGET_CBAUD, TARGET_B0, CBAUD, B0 },
 845         { TARGET_CBAUD, TARGET_B50, CBAUD, B50 },
 846         { TARGET_CBAUD, TARGET_B75, CBAUD, B75 },
 847         { TARGET_CBAUD, TARGET_B110, CBAUD, B110 },
 848         { TARGET_CBAUD, TARGET_B134, CBAUD, B134 },
 849         { TARGET_CBAUD, TARGET_B150, CBAUD, B150 },
 850         { TARGET_CBAUD, TARGET_B200, CBAUD, B200 },
 851         { TARGET_CBAUD, TARGET_B300, CBAUD, B300 },
 852         { TARGET_CBAUD, TARGET_B600, CBAUD, B600 },
 853         { TARGET_CBAUD, TARGET_B1200, CBAUD, B1200 },
 854         { TARGET_CBAUD, TARGET_B1800, CBAUD, B1800 },
 855         { TARGET_CBAUD, TARGET_B2400, CBAUD, B2400 },
 856         { TARGET_CBAUD, TARGET_B4800, CBAUD, B4800 },
 857         { TARGET_CBAUD, TARGET_B9600, CBAUD, B9600 },
 858         { TARGET_CBAUD, TARGET_B19200, CBAUD, B19200 },
 859         { TARGET_CBAUD, TARGET_B38400, CBAUD, B38400 },
 860         { TARGET_CBAUD, TARGET_B57600, CBAUD, B57600 },
 861         { TARGET_CBAUD, TARGET_B115200, CBAUD, B115200 },
 862         { TARGET_CBAUD, TARGET_B230400, CBAUD, B230400 },
 863         { TARGET_CBAUD, TARGET_B460800, CBAUD, B460800 },
 864         { TARGET_CSIZE, TARGET_CS5, CSIZE, CS5 },
 865         { TARGET_CSIZE, TARGET_CS6, CSIZE, CS6 },
 866         { TARGET_CSIZE, TARGET_CS7, CSIZE, CS7 },
 867         { TARGET_CSIZE, TARGET_CS8, CSIZE, CS8 },
 868         { TARGET_CSTOPB, TARGET_CSTOPB, CSTOPB, CSTOPB },
 869         { TARGET_CREAD, TARGET_CREAD, CREAD, CREAD },
 870         { TARGET_PARENB, TARGET_PARENB, PARENB, PARENB },
 871         { TARGET_PARODD, TARGET_PARODD, PARODD, PARODD },
 872         { TARGET_HUPCL, TARGET_HUPCL, HUPCL, HUPCL },
 873         { TARGET_CLOCAL, TARGET_CLOCAL, CLOCAL, CLOCAL },
 874         { TARGET_CRTSCTS, TARGET_CRTSCTS, CRTSCTS, CRTSCTS },
 875         { 0, 0, 0, 0 }
 876 };
 877
 878 bitmask_transtbl lflag_tbl[] = {
 879         { TARGET_ISIG, TARGET_ISIG, ISIG, ISIG },
 880         { TARGET_ICANON, TARGET_ICANON, ICANON, ICANON },
 881         { TARGET_XCASE, TARGET_XCASE, XCASE, XCASE },
 882         { TARGET_ECHO, TARGET_ECHO, ECHO, ECHO },
 883         { TARGET_ECHOE, TARGET_ECHOE, ECHOE, ECHOE },
 884         { TARGET_ECHOK, TARGET_ECHOK, ECHOK, ECHOK },
 885         { TARGET_ECHONL, TARGET_ECHONL, ECHONL, ECHONL },
 886         { TARGET_NOFLSH, TARGET_NOFLSH, NOFLSH, NOFLSH },
 887         { TARGET_TOSTOP, TARGET_TOSTOP, TOSTOP, TOSTOP },
 888         { TARGET_ECHOCTL, TARGET_ECHOCTL, ECHOCTL, ECHOCTL },
 889         { TARGET_ECHOPRT, TARGET_ECHOPRT, ECHOPRT, ECHOPRT },
 890         { TARGET_ECHOKE, TARGET_ECHOKE, ECHOKE, ECHOKE },
 891         { TARGET_FLUSHO, TARGET_FLUSHO, FLUSHO, FLUSHO },
 892         { TARGET_PENDIN, TARGET_PENDIN, PENDIN, PENDIN },
 893         { TARGET_IEXTEN, TARGET_IEXTEN, IEXTEN, IEXTEN },
 894         { 0, 0, 0, 0 }
 895 };
 896
 897 static void target_to_host_termios (void *dst, const void *src)
 898 {
 899     struct host_termios *host = dst;
 900     const struct target_termios *target = src;
 901
 902     host->c_iflag =
 903         target_to_host_bitmask(tswap32(target->c_iflag), iflag_tbl);
 904     host->c_oflag =
 905         target_to_host_bitmask(tswap32(target->c_oflag), oflag_tbl);
 906     host->c_cflag =
 907         target_to_host_bitmask(tswap32(target->c_cflag), cflag_tbl);
 908     host->c_lflag =
 909         target_to_host_bitmask(tswap32(target->c_lflag), lflag_tbl);
 910     host->c_line = target->c_line;
 911
 912     host->c_cc[VINTR] = target->c_cc[TARGET_VINTR];
 913     host->c_cc[VQUIT] = target->c_cc[TARGET_VQUIT];
 914     host->c_cc[VERASE] = target->c_cc[TARGET_VERASE];
 915     host->c_cc[VKILL] = target->c_cc[TARGET_VKILL];
 916     host->c_cc[VEOF] = target->c_cc[TARGET_VEOF];
 917     host->c_cc[VTIME] = target->c_cc[TARGET_VTIME];
 918     host->c_cc[VMIN] = target->c_cc[TARGET_VMIN];
 919     host->c_cc[VSWTC] = target->c_cc[TARGET_VSWTC];
 920     host->c_cc[VSTART] = target->c_cc[TARGET_VSTART];
 921     host->c_cc[VSTOP] = target->c_cc[TARGET_VSTOP];
 922     host->c_cc[VSUSP] = target->c_cc[TARGET_VSUSP];
 923     host->c_cc[VEOL] = target->c_cc[TARGET_VEOL];
 924     host->c_cc[VREPRINT] = target->c_cc[TARGET_VREPRINT];
 925     host->c_cc[VDISCARD] = target->c_cc[TARGET_VDISCARD];
 926     host->c_cc[VWERASE] = target->c_cc[TARGET_VWERASE];
 927     host->c_cc[VLNEXT] = target->c_cc[TARGET_VLNEXT];
 928     host->c_cc[VEOL2] = target->c_cc[TARGET_VEOL2];
 929 }
 930
 931 static void host_to_target_termios (void *dst, const void *src)
 932 {
 933     struct target_termios *target = dst;
 934     const struct host_termios *host = src;
 935
 936     target->c_iflag =
 937         tswap32(host_to_target_bitmask(host->c_iflag, iflag_tbl));
 938     target->c_oflag =
 939         tswap32(host_to_target_bitmask(host->c_oflag, oflag_tbl));
 940     target->c_cflag =
 941         tswap32(host_to_target_bitmask(host->c_cflag, cflag_tbl));
 942     target->c_lflag =
 943         tswap32(host_to_target_bitmask(host->c_lflag, lflag_tbl));
 944     target->c_line = host->c_line;
 945
 946     target->c_cc[TARGET_VINTR] = host->c_cc[VINTR];
 947     target->c_cc[TARGET_VQUIT] = host->c_cc[VQUIT];
 948     target->c_cc[TARGET_VERASE] = host->c_cc[VERASE];
 949     target->c_cc[TARGET_VKILL] = host->c_cc[VKILL];
 950     target->c_cc[TARGET_VEOF] = host->c_cc[VEOF];
 951     target->c_cc[TARGET_VTIME] = host->c_cc[VTIME];
 952     target->c_cc[TARGET_VMIN] = host->c_cc[VMIN];
 953     target->c_cc[TARGET_VSWTC] = host->c_cc[VSWTC];
 954     target->c_cc[TARGET_VSTART] = host->c_cc[VSTART];
 955     target->c_cc[TARGET_VSTOP] = host->c_cc[VSTOP];
 956     target->c_cc[TARGET_VSUSP] = host->c_cc[VSUSP];
 957     target->c_cc[TARGET_VEOL] = host->c_cc[VEOL];
 958     target->c_cc[TARGET_VREPRINT] = host->c_cc[VREPRINT];
 959     target->c_cc[TARGET_VDISCARD] = host->c_cc[VDISCARD];
 960     target->c_cc[TARGET_VWERASE] = host->c_cc[VWERASE];
 961     target->c_cc[TARGET_VLNEXT] = host->c_cc[VLNEXT];
 962     target->c_cc[TARGET_VEOL2] = host->c_cc[VEOL2];
 963 }
 964
 965 StructEntry struct_termios_def = {
 966     .convert = { host_to_target_termios, target_to_host_termios },
 967     .size = { sizeof(struct target_termios), sizeof(struct host_termios) },
 968     .align = { __alignof__(struct target_termios), __alignof__(struct host_termios) },
 969 };
 970
 971 static bitmask_transtbl mmap_flags_tbl[] = {
 972         { TARGET_MAP_SHARED, TARGET_MAP_SHARED, MAP_SHARED, MAP_SHARED },
 973         { TARGET_MAP_PRIVATE, TARGET_MAP_PRIVATE, MAP_PRIVATE, MAP_PRIVATE },
 974         { TARGET_MAP_FIXED, TARGET_MAP_FIXED, MAP_FIXED, MAP_FIXED },
 975         { TARGET_MAP_ANONYMOUS, TARGET_MAP_ANONYMOUS, MAP_ANONYMOUS, MAP_ANONYMOUS },
 976         { TARGET_MAP_GROWSDOWN, TARGET_MAP_GROWSDOWN, MAP_GROWSDOWN, MAP_GROWSDOWN },
 977         { TARGET_MAP_DENYWRITE, TARGET_MAP_DENYWRITE, MAP_DENYWRITE, MAP_DENYWRITE },
 978         { TARGET_MAP_EXECUTABLE, TARGET_MAP_EXECUTABLE, MAP_EXECUTABLE, MAP_EXECUTABLE },
 979         { TARGET_MAP_LOCKED, TARGET_MAP_LOCKED, MAP_LOCKED, MAP_LOCKED },
 980         { 0, 0, 0, 0 }
 981 };
 982
 983 #if defined(TARGET_I386)
 984
 985 /* NOTE: there is really one LDT for all the threads */
 986 uint8_t *ldt_table;
 987
 988 static int read_ldt(void *ptr, unsigned long bytecount)
 989 {
 990     int size;
 991
 992     if (!ldt_table)
 993         return 0;
 994     size = TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE;
 995     if (size > bytecount)
 996         size = bytecount;
 997     memcpy(ptr, ldt_table, size);
 998     return size;
 999 }
1000
1001 /* XXX: add locking support */
1002 static int write_ldt(CPUX86State *env,
1003                      void *ptr, unsigned long bytecount, int oldmode)
1004 {
1005     struct target_modify_ldt_ldt_s ldt_info;
1006     int seg_32bit, contents, read_exec_only, limit_in_pages;
1007     int seg_not_present, useable;
1008     uint32_t *lp, entry_1, entry_2;
1009
1010     if (bytecount != sizeof(ldt_info))
1011         return -EINVAL;
1012     memcpy(&ldt_info, ptr, sizeof(ldt_info));
1013     tswap32s(&ldt_info.entry_number);
1014     tswapls((long *)&ldt_info.base_addr);
1015     tswap32s(&ldt_info.limit);
1016     tswap32s(&ldt_info.flags);
1017
1018     if (ldt_info.entry_number >= TARGET_LDT_ENTRIES)
1019         return -EINVAL;
1020     seg_32bit = ldt_info.flags & 1;
1021     contents = (ldt_info.flags >> 1) & 3;
1022     read_exec_only = (ldt_info.flags >> 3) & 1;
1023     limit_in_pages = (ldt_info.flags >> 4) & 1;
1024     seg_not_present = (ldt_info.flags >> 5) & 1;
1025     useable = (ldt_info.flags >> 6) & 1;
1026
1027     if (contents == 3) {
1028         if (oldmode)
1029             return -EINVAL;
1030         if (seg_not_present == 0)
1031             return -EINVAL;
1032     }
1033     /* allocate the LDT */
1034     if (!ldt_table) {
1035         ldt_table = malloc(TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE);
1036         if (!ldt_table)
1037             return -ENOMEM;
1038         memset(ldt_table, 0, TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE);
1039         env->ldt.base = ldt_table;
1040         env->ldt.limit = 0xffff;
1041     }
1042
1043     /* NOTE: same code as Linux kernel */
1044     /* Allow LDTs to be cleared by the user. */
1045     if (ldt_info.base_addr == 0 && ldt_info.limit == 0) {
1046         if (oldmode ||
1047             (contents == 0              &&
1048              read_exec_only == 1        &&
1049              seg_32bit == 0             &&
1050              limit_in_pages == 0        &&
1051              seg_not_present == 1       &&
1052              useable == 0 )) {
1053             entry_1 = 0;
1054             entry_2 = 0;
1055             goto install;
1056         }
1057     }
1058
1059     entry_1 = ((ldt_info.base_addr & 0x0000ffff) << 16) |
1060         (ldt_info.limit & 0x0ffff);
1061     entry_2 = (ldt_info.base_addr & 0xff000000) |
1062         ((ldt_info.base_addr & 0x00ff0000) >> 16) |
1063         (ldt_info.limit & 0xf0000) |
1064         ((read_exec_only ^ 1) << 9) |
1065         (contents << 10) |
1066         ((seg_not_present ^ 1) << 15) |
1067         (seg_32bit << 22) |
1068         (limit_in_pages << 23) |
1069         0x7000;
1070     if (!oldmode)
1071         entry_2 |= (useable << 20);
1072
1073     /* Install the new entry ...  */
1074 install:
1075     lp = (uint32_t *)(ldt_table + (ldt_info.entry_number << 3));
1076     lp[0] = tswap32(entry_1);
1077     lp[1] = tswap32(entry_2);
1078     return 0;
1079 }
1080
1081 /* specific and weird i386 syscalls */
1082 int do_modify_ldt(CPUX86State *env, int func, void *ptr, unsigned long bytecount)
1083 {
1084     int ret = -ENOSYS;
1085
1086     switch (func) {
1087     case 0:
1088         ret = read_ldt(ptr, bytecount);
1089         break;
1090     case 1:
1091         ret = write_ldt(env, ptr, bytecount, 1);
1092         break;
1093     case 0x11:
1094         ret = write_ldt(env, ptr, bytecount, 0);
1095         break;
1096     }
1097     return ret;
1098 }
1099
1100 #endif /* defined(TARGET_I386) */
1101
1102 /* this stack is the equivalent of the kernel stack associated with a
1103    thread/process */
1104 #define NEW_STACK_SIZE 8192
1105
1106 static int clone_func(void *arg)
1107 {
1108     CPUState *env = arg;
1109     cpu_loop(env);
1110     /* never exits */
1111     return 0;
1112 }
1113
1114 int do_fork(CPUState *env, unsigned int flags, unsigned long newsp)
1115 {
1116     int ret;
1117     TaskState *ts;
1118     uint8_t *new_stack;
1119     CPUState *new_env;
1120
1121     if (flags & CLONE_VM) {
1122         ts = malloc(sizeof(TaskState) + NEW_STACK_SIZE);
1123         memset(ts, 0, sizeof(TaskState));
1124         new_stack = ts->stack;
1125         ts->used = 1;
1126         /* add in task state list */
1127         ts->next = first_task_state;
1128         first_task_state = ts;
1129         /* we create a new CPU instance. */
1130         new_env = cpu_init();
1131         memcpy(new_env, env, sizeof(CPUState));
1132 #if defined(TARGET_I386)
1133         if (!newsp)
1134             newsp = env->regs[R_ESP];
1135         new_env->regs[R_ESP] = newsp;
1136         new_env->regs[R_EAX] = 0;
1137 #elif defined(TARGET_ARM)
1138         if (!newsp)
1139             newsp = env->regs[13];
1140         new_env->regs[13] = newsp;
1141         new_env->regs[0] = 0;
1142 #else
1143 #error unsupported target CPU
1144 #endif
1145         new_env->opaque = ts;
1146 #ifdef __ia64__
1147         ret = clone2(clone_func, new_stack + NEW_STACK_SIZE, flags, new_env);
1148 #else
1149         ret = clone(clone_func, new_stack + NEW_STACK_SIZE, flags, new_env);
1150 #endif
1151     } else {
1152         /* if no CLONE_VM, we consider it is a fork */
1153         if ((flags & ~CSIGNAL) != 0)
1154             return -EINVAL;
1155         ret = fork();
1156     }
1157     return ret;
1158 }
1159
1160 static long do_fcntl(int fd, int cmd, unsigned long arg)
1161 {
1162     struct flock fl;
1163     struct target_flock *target_fl = (void *)arg;
1164     long ret;
1165
1166     switch(cmd) {
1167     case TARGET_F_GETLK:
1168         ret = fcntl(fd, cmd, &fl);
1169         if (ret == 0) {
1170             target_fl->l_type = tswap16(fl.l_type);
1171             target_fl->l_whence = tswap16(fl.l_whence);
1172             target_fl->l_start = tswapl(fl.l_start);
1173             target_fl->l_len = tswapl(fl.l_len);
1174             target_fl->l_pid = tswapl(fl.l_pid);
1175         }
1176         break;
1177
1178     case TARGET_F_SETLK:
1179     case TARGET_F_SETLKW:
1180         fl.l_type = tswap16(target_fl->l_type);
1181         fl.l_whence = tswap16(target_fl->l_whence);
1182         fl.l_start = tswapl(target_fl->l_start);
1183         fl.l_len = tswapl(target_fl->l_len);
1184         fl.l_pid = tswapl(target_fl->l_pid);
1185         ret = fcntl(fd, cmd, &fl);
1186         break;
1187
1188     case TARGET_F_GETLK64:
1189     case TARGET_F_SETLK64:
1190     case TARGET_F_SETLKW64:
1191         ret = -1;
1192         errno = EINVAL;
1193         break;
1194
1195     default:
1196         ret = fcntl(fd, cmd, arg);
1197         break;
1198     }
1199     return ret;
1200 }
1201
1202
1203 #define high2lowuid(x) (x)
1204 #define high2lowgid(x) (x)
1205 #define low2highuid(x) (x)
1206 #define low2highgid(x) (x)
1207
1208 void syscall_init(void)
1209 {
1210     IOCTLEntry *ie;
1211     const argtype *arg_type;
1212     int size;
1213
1214 #define STRUCT(name, list...) thunk_register_struct(STRUCT_ ## name, #name, struct_ ## name ## _def);
1215 #define STRUCT_SPECIAL(name) thunk_register_struct_direct(STRUCT_ ## name, #name, &struct_ ## name ## _def);
1216 #include "syscall_types.h"
1217 #undef STRUCT
1218 #undef STRUCT_SPECIAL
1219
1220     /* we patch the ioctl size if necessary. We rely on the fact that
1221        no ioctl has all the bits at '1' in the size field */
1222     ie = ioctl_entries;
1223     while (ie->target_cmd != 0) {
1224         if (((ie->target_cmd >> TARGET_IOC_SIZESHIFT) & TARGET_IOC_SIZEMASK) ==
1225             TARGET_IOC_SIZEMASK) {
1226             arg_type = ie->arg_type;
1227             if (arg_type[0] != TYPE_PTR) {
1228                 fprintf(stderr, "cannot patch size for ioctl 0x%x\n",
1229                         ie->target_cmd);
1230                 exit(1);
1231             }
1232             arg_type++;
1233             size = thunk_type_size(arg_type, 0);
1234             ie->target_cmd = (ie->target_cmd &
1235                               ~(TARGET_IOC_SIZEMASK << TARGET_IOC_SIZESHIFT)) |
1236                 (size << TARGET_IOC_SIZESHIFT);
1237         }
1238         /* automatic consistency check if same arch */
1239 #if defined(__i386__) && defined(TARGET_I386)
1240         if (ie->target_cmd != ie->host_cmd) {
1241             fprintf(stderr, "ERROR: ioctl: target=0x%x host=0x%x\n",
1242                     ie->target_cmd, ie->host_cmd);
1243         }
1244 #endif
1245         ie++;
1246     }
1247 }
1248
1249 long do_syscall(void *cpu_env, int num, long arg1, long arg2, long arg3,
1250                 long arg4, long arg5, long arg6)
1251 {
1252     long ret;
1253     struct stat st;
1254     struct kernel_statfs *stfs;
1255
1256 #ifdef DEBUG
1257     gemu_log("syscall %d\n", num);
1258 #endif
1259     switch(num) {
1260     case TARGET_NR_exit:
1261 #ifdef HAVE_GPROF
1262         _mcleanup();
1263 #endif
1264         /* XXX: should free thread stack and CPU env */
1265         _exit(arg1);
1266         ret = 0; /* avoid warning */
1267         break;
1268     case TARGET_NR_read:
1269         page_unprotect_range((void *)arg2, arg3);
1270         ret = get_errno(read(arg1, (void *)arg2, arg3));
1271         break;
1272     case TARGET_NR_write:
1273         ret = get_errno(write(arg1, (void *)arg2, arg3));
1274         break;
1275     case TARGET_NR_open:
1276         ret = get_errno(open(path((const char *)arg1), arg2, arg3));
1277         break;
1278     case TARGET_NR_close:
1279         ret = get_errno(close(arg1));
1280         break;
1281     case TARGET_NR_brk:
1282         ret = do_brk((char *)arg1);
1283         break;
1284     case TARGET_NR_fork:
1285         ret = get_errno(do_fork(cpu_env, SIGCHLD, 0));
1286         break;
1287     case TARGET_NR_waitpid:
1288         {
1289             int *status = (int *)arg2;
1290             ret = get_errno(waitpid(arg1, status, arg3));
1291             if (!is_error(ret) && status)
1292                 tswapls((long *)&status);
1293         }
1294         break;
1295     case TARGET_NR_creat:
1296         ret = get_errno(creat((const char *)arg1, arg2));
1297         break;
1298     case TARGET_NR_link:
1299         ret = get_errno(link((const char *)arg1, (const char *)arg2));
1300         break;
1301     case TARGET_NR_unlink:
1302         ret = get_errno(unlink((const char *)arg1));
1303         break;
1304     case TARGET_NR_execve:
1305         {
1306             char **argp, **envp;
1307             int argc, envc;
1308             uint32_t *p;
1309             char **q;
1310
1311             argc = 0;
1312             for (p = (void *)arg2; *p; p++)
1313                 argc++;
1314             envc = 0;
1315             for (p = (void *)arg3; *p; p++)
1316                 envc++;
1317
1318             argp = alloca((argc + 1) * sizeof(void *));
1319             envp = alloca((envc + 1) * sizeof(void *));
1320
1321             for (p = (void *)arg2, q = argp; *p; p++, q++)
1322                 *q = (void *)tswap32(*p);
1323             *q = NULL;
1324
1325             for (p = (void *)arg3, q = envp; *p; p++, q++)
1326                 *q = (void *)tswap32(*p);
1327             *q = NULL;
1328
1329             ret = get_errno(execve((const char *)arg1, argp, envp));
1330         }
1331         break;
1332     case TARGET_NR_chdir:
1333         ret = get_errno(chdir((const char *)arg1));
1334         break;
1335     case TARGET_NR_time:
1336         {
1337             int *time_ptr = (int *)arg1;
1338             ret = get_errno(time((time_t *)time_ptr));
1339             if (!is_error(ret) && time_ptr)
1340                 tswap32s(time_ptr);
1341         }
1342         break;
1343     case TARGET_NR_mknod:
1344         ret = get_errno(mknod((const char *)arg1, arg2, arg3));
1345         break;
1346     case TARGET_NR_chmod:
1347         ret = get_errno(chmod((const char *)arg1, arg2));
1348         break;
1349     case TARGET_NR_lchown:
1350         ret = get_errno(chown((const char *)arg1, arg2, arg3));
1351         break;
1352     case TARGET_NR_break:
1353         goto unimplemented;
1354     case TARGET_NR_oldstat:
1355         goto unimplemented;
1356     case TARGET_NR_lseek:
1357         ret = get_errno(lseek(arg1, arg2, arg3));
1358         break;
1359     case TARGET_NR_getpid:
1360         ret = get_errno(getpid());
1361         break;
1362     case TARGET_NR_mount:
1363         /* need to look at the data field */
1364         goto unimplemented;
1365     case TARGET_NR_umount:
1366         ret = get_errno(umount((const char *)arg1));
1367         break;
1368     case TARGET_NR_setuid:
1369         ret = get_errno(setuid(low2highuid(arg1)));
1370         break;
1371     case TARGET_NR_getuid:
1372         ret = get_errno(getuid());
1373         break;
1374     case TARGET_NR_stime:
1375         {
1376             int *time_ptr = (int *)arg1;
1377             if (time_ptr)
1378                 tswap32s(time_ptr);
1379             ret = get_errno(stime((time_t *)time_ptr));
1380         }
1381         break;
1382     case TARGET_NR_ptrace:
1383         goto unimplemented;
1384     case TARGET_NR_alarm:
1385         ret = alarm(arg1);
1386         break;
1387     case TARGET_NR_oldfstat:
1388         goto unimplemented;
1389     case TARGET_NR_pause:
1390         ret = get_errno(pause());
1391         break;
1392     case TARGET_NR_utime:
1393         goto unimplemented;
1394     case TARGET_NR_stty:
1395         goto unimplemented;
1396     case TARGET_NR_gtty:
1397         goto unimplemented;
1398     case TARGET_NR_access:
1399         ret = get_errno(access((const char *)arg1, arg2));
1400         break;
1401     case TARGET_NR_nice:
1402         ret = get_errno(nice(arg1));
1403         break;
1404     case TARGET_NR_ftime:
1405         goto unimplemented;
1406     case TARGET_NR_sync:
1407         sync();
1408         ret = 0;
1409         break;
1410     case TARGET_NR_kill:
1411         ret = get_errno(kill(arg1, arg2));
1412         break;
1413     case TARGET_NR_rename:
1414         ret = get_errno(rename((const char *)arg1, (const char *)arg2));
1415         break;
1416     case TARGET_NR_mkdir:
1417         ret = get_errno(mkdir((const char *)arg1, arg2));
1418         break;
1419     case TARGET_NR_rmdir:
1420         ret = get_errno(rmdir((const char *)arg1));
1421         break;
1422     case TARGET_NR_dup:
1423         ret = get_errno(dup(arg1));
1424         break;
1425     case TARGET_NR_pipe:
1426         {
1427             int *pipe_ptr = (int *)arg1;
1428             ret = get_errno(pipe(pipe_ptr));
1429             if (!is_error(ret)) {
1430                 tswap32s(&pipe_ptr[0]);
1431                 tswap32s(&pipe_ptr[1]);
1432             }
1433         }
1434         break;
1435     case TARGET_NR_times:
1436         {
1437             struct target_tms *tmsp = (void *)arg1;
1438             struct tms tms;
1439             ret = get_errno(times(&tms));
1440             if (tmsp) {
1441                 tmsp->tms_utime = tswapl(host_to_target_clock_t(tms.tms_utime));
1442                 tmsp->tms_stime = tswapl(host_to_target_clock_t(tms.tms_stime));
1443                 tmsp->tms_cutime = tswapl(host_to_target_clock_t(tms.tms_cutime));
1444                 tmsp->tms_cstime = tswapl(host_to_target_clock_t(tms.tms_cstime));
1445             }
1446             if (!is_error(ret))
1447                 ret = host_to_target_clock_t(ret);
1448         }
1449         break;
1450     case TARGET_NR_prof:
1451         goto unimplemented;
1452     case TARGET_NR_setgid:
1453         ret = get_errno(setgid(low2highgid(arg1)));
1454         break;
1455     case TARGET_NR_getgid:
1456         ret = get_errno(getgid());
1457         break;
1458     case TARGET_NR_signal:
1459         goto unimplemented;
1460     case TARGET_NR_geteuid:
1461         ret = get_errno(geteuid());
1462         break;
1463     case TARGET_NR_getegid:
1464         ret = get_errno(getegid());
1465         break;
1466     case TARGET_NR_acct:
1467         goto unimplemented;
1468     case TARGET_NR_umount2:
1469         ret = get_errno(umount2((const char *)arg1, arg2));
1470         break;
1471     case TARGET_NR_lock:
1472         goto unimplemented;
1473     case TARGET_NR_ioctl:
1474         ret = do_ioctl(arg1, arg2, arg3);
1475         break;
1476     case TARGET_NR_fcntl:
1477         ret = get_errno(do_fcntl(arg1, arg2, arg3));
1478         break;
1479     case TARGET_NR_mpx:
1480         goto unimplemented;
1481     case TARGET_NR_setpgid:
1482         ret = get_errno(setpgid(arg1, arg2));
1483         break;
1484     case TARGET_NR_ulimit:
1485         goto unimplemented;
1486     case TARGET_NR_oldolduname:
1487         goto unimplemented;
1488     case TARGET_NR_umask:
1489         ret = get_errno(umask(arg1));
1490         break;
1491     case TARGET_NR_chroot:
1492         ret = get_errno(chroot((const char *)arg1));
1493         break;
1494     case TARGET_NR_ustat:
1495         goto unimplemented;
1496     case TARGET_NR_dup2:
1497         ret = get_errno(dup2(arg1, arg2));
1498         break;
1499     case TARGET_NR_getppid:
1500         ret = get_errno(getppid());
1501         break;
1502     case TARGET_NR_getpgrp:
1503         ret = get_errno(getpgrp());
1504         break;
1505     case TARGET_NR_setsid:
1506         ret = get_errno(setsid());
1507         break;
1508     case TARGET_NR_sigaction:
1509         {
1510             struct target_old_sigaction *old_act = (void *)arg2;
1511             struct target_old_sigaction *old_oact = (void *)arg3;
1512             struct target_sigaction act, oact, *pact;
1513             if (old_act) {
1514                 act._sa_handler = old_act->_sa_handler;
1515                 target_siginitset(&act.sa_mask, old_act->sa_mask);
1516                 act.sa_flags = old_act->sa_flags;
1517                 act.sa_restorer = old_act->sa_restorer;
1518                 pact = &act;
1519             } else {
1520                 pact = NULL;
1521             }
1522             ret = get_errno(do_sigaction(arg1, pact, &oact));
1523             if (!is_error(ret) && old_oact) {
1524                 old_oact->_sa_handler = oact._sa_handler;
1525                 old_oact->sa_mask = oact.sa_mask.sig[0];
1526                 old_oact->sa_flags = oact.sa_flags;
1527                 old_oact->sa_restorer = oact.sa_restorer;
1528             }
1529         }
1530         break;
1531     case TARGET_NR_rt_sigaction:
1532         ret = get_errno(do_sigaction(arg1, (void *)arg2, (void *)arg3));
1533         break;
1534     case TARGET_NR_sgetmask:
1535         {
1536             sigset_t cur_set;
1537             target_ulong target_set;
1538             sigprocmask(0, NULL, &cur_set);
1539             host_to_target_old_sigset(&target_set, &cur_set);
1540             ret = target_set;
1541         }
1542         break;
1543     case TARGET_NR_ssetmask:
1544         {
1545             sigset_t set, oset, cur_set;
1546             target_ulong target_set = arg1;
1547             sigprocmask(0, NULL, &cur_set);
1548             target_to_host_old_sigset(&set, &target_set);
1549             sigorset(&set, &set, &cur_set);
1550             sigprocmask(SIG_SETMASK, &set, &oset);
1551             host_to_target_old_sigset(&target_set, &oset);
1552             ret = target_set;
1553         }
1554         break;
1555     case TARGET_NR_sigprocmask:
1556         {
1557             int how = arg1;
1558             sigset_t set, oldset, *set_ptr;
1559             target_ulong *pset = (void *)arg2, *poldset = (void *)arg3;
1560
1561             if (pset) {
1562                 switch(how) {
1563                 case TARGET_SIG_BLOCK:
1564                     how = SIG_BLOCK;
1565                     break;
1566                 case TARGET_SIG_UNBLOCK:
1567                     how = SIG_UNBLOCK;
1568                     break;
1569                 case TARGET_SIG_SETMASK:
1570                     how = SIG_SETMASK;
1571                     break;
1572                 default:
1573                     ret = -EINVAL;
1574                     goto fail;
1575                 }
1576                 target_to_host_old_sigset(&set, pset);
1577                 set_ptr = &set;
1578             } else {
1579                 how = 0;
1580                 set_ptr = NULL;
1581             }
1582             ret = get_errno(sigprocmask(arg1, set_ptr, &oldset));
1583             if (!is_error(ret) && poldset) {
1584                 host_to_target_old_sigset(poldset, &oldset);
1585             }
1586         }
1587         break;
1588     case TARGET_NR_rt_sigprocmask:
1589         {
1590             int how = arg1;
1591             sigset_t set, oldset, *set_ptr;
1592             target_sigset_t *pset = (void *)arg2;
1593             target_sigset_t *poldset = (void *)arg3;
1594
1595             if (pset) {
1596                 switch(how) {
1597                 case TARGET_SIG_BLOCK:
1598                     how = SIG_BLOCK;
1599                     break;
1600                 case TARGET_SIG_UNBLOCK:
1601                     how = SIG_UNBLOCK;
1602                     break;
1603                 case TARGET_SIG_SETMASK:
1604                     how = SIG_SETMASK;
1605                     break;
1606                 default:
1607                     ret = -EINVAL;
1608                     goto fail;
1609                 }
1610                 target_to_host_sigset(&set, pset);
1611                 set_ptr = &set;
1612             } else {
1613                 how = 0;
1614                 set_ptr = NULL;
1615             }
1616             ret = get_errno(sigprocmask(how, set_ptr, &oldset));
1617             if (!is_error(ret) && poldset) {
1618                 host_to_target_sigset(poldset, &oldset);
1619             }
1620         }
1621         break;
1622     case TARGET_NR_sigpending:
1623         {
1624             sigset_t set;
1625             ret = get_errno(sigpending(&set));
1626             if (!is_error(ret)) {
1627                 host_to_target_old_sigset((target_ulong *)arg1, &set);
1628             }
1629         }
1630         break;
1631     case TARGET_NR_rt_sigpending:
1632         {
1633             sigset_t set;
1634             ret = get_errno(sigpending(&set));
1635             if (!is_error(ret)) {
1636                 host_to_target_sigset((target_sigset_t *)arg1, &set);
1637             }
1638         }
1639         break;
1640     case TARGET_NR_sigsuspend:
1641         {
1642             sigset_t set;
1643             target_to_host_old_sigset(&set, (target_ulong *)arg1);
1644             ret = get_errno(sigsuspend(&set));
1645         }
1646         break;
1647     case TARGET_NR_rt_sigsuspend:
1648         {
1649             sigset_t set;
1650             target_to_host_sigset(&set, (target_sigset_t *)arg1);
1651             ret = get_errno(sigsuspend(&set));
1652         }
1653         break;
1654     case TARGET_NR_rt_sigtimedwait:
1655         {
1656             target_sigset_t *target_set = (void *)arg1;
1657             target_siginfo_t *target_uinfo = (void *)arg2;
1658             struct target_timespec *target_uts = (void *)arg3;
1659             sigset_t set;
1660             struct timespec uts, *puts;
1661             siginfo_t uinfo;
1662
1663             target_to_host_sigset(&set, target_set);
1664             if (target_uts) {
1665                 puts = &uts;
1666                 puts->tv_sec = tswapl(target_uts->tv_sec);
1667                 puts->tv_nsec = tswapl(target_uts->tv_nsec);
1668             } else {
1669                 puts = NULL;
1670             }
1671             ret = get_errno(sigtimedwait(&set, &uinfo, puts));
1672             if (!is_error(ret) && target_uinfo) {
1673                 host_to_target_siginfo(target_uinfo, &uinfo);
1674             }
1675         }
1676         break;
1677     case TARGET_NR_rt_sigqueueinfo:
1678         {
1679             siginfo_t uinfo;
1680             target_to_host_siginfo(&uinfo, (target_siginfo_t *)arg3);
1681             ret = get_errno(sys_rt_sigqueueinfo(arg1, arg2, &uinfo));
1682         }
1683         break;
1684     case TARGET_NR_sigreturn:
1685         /* NOTE: ret is eax, so not transcoding must be done */
1686         ret = do_sigreturn(cpu_env);
1687         break;
1688     case TARGET_NR_rt_sigreturn:
1689         /* NOTE: ret is eax, so not transcoding must be done */
1690         ret = do_rt_sigreturn(cpu_env);
1691         break;
1692     case TARGET_NR_setreuid:
1693         ret = get_errno(setreuid(arg1, arg2));
1694         break;
1695     case TARGET_NR_setregid:
1696         ret = get_errno(setregid(arg1, arg2));
1697         break;
1698     case TARGET_NR_sethostname:
1699         ret = get_errno(sethostname((const char *)arg1, arg2));
1700         break;
1701     case TARGET_NR_setrlimit:
1702         {
1703             /* XXX: convert resource ? */
1704             int resource = arg1;
1705             struct target_rlimit *target_rlim = (void *)arg2;
1706             struct rlimit rlim;
1707             rlim.rlim_cur = tswapl(target_rlim->rlim_cur);
1708             rlim.rlim_max = tswapl(target_rlim->rlim_max);
1709             ret = get_errno(setrlimit(resource, &rlim));
1710         }
1711         break;
1712     case TARGET_NR_getrlimit:
1713         {
1714             /* XXX: convert resource ? */
1715             int resource = arg1;
1716             struct target_rlimit *target_rlim = (void *)arg2;
1717             struct rlimit rlim;
1718
1719             ret = get_errno(getrlimit(resource, &rlim));
1720             if (!is_error(ret)) {
1721                 target_rlim->rlim_cur = tswapl(rlim.rlim_cur);
1722                 target_rlim->rlim_max = tswapl(rlim.rlim_max);
1723             }
1724         }
1725         break;
1726     case TARGET_NR_getrusage:
1727         {
1728             struct rusage rusage;
1729             struct target_rusage *target_rusage = (void *)arg2;
1730             ret = get_errno(getrusage(arg1, &rusage));
1731             if (!is_error(ret)) {
1732                 host_to_target_rusage(target_rusage, &rusage);
1733             }
1734         }
1735         break;
1736     case TARGET_NR_gettimeofday:
1737         {
1738             struct target_timeval *target_tv = (void *)arg1;
1739             struct timeval tv;
1740             ret = get_errno(gettimeofday(&tv, NULL));
1741             if (!is_error(ret)) {
1742                 host_to_target_timeval(target_tv, &tv);
1743             }
1744         }
1745         break;
1746     case TARGET_NR_settimeofday:
1747         {
1748             struct target_timeval *target_tv = (void *)arg1;
1749             struct timeval tv;
1750             target_to_host_timeval(&tv, target_tv);
1751             ret = get_errno(settimeofday(&tv, NULL));
1752         }
1753         break;
1754     case TARGET_NR_getgroups:
1755         {
1756             int gidsetsize = arg1;
1757             uint16_t *target_grouplist = (void *)arg2;
1758             gid_t *grouplist;
1759             int i;
1760
1761             grouplist = alloca(gidsetsize * sizeof(gid_t));
1762             ret = get_errno(getgroups(gidsetsize, grouplist));
1763             if (!is_error(ret)) {
1764                 for(i = 0;i < gidsetsize; i++)
1765                     target_grouplist[i] = tswap16(grouplist[i]);
1766             }
1767         }
1768         break;
1769     case TARGET_NR_setgroups:
1770         {
1771             int gidsetsize = arg1;
1772             uint16_t *target_grouplist = (void *)arg2;
1773             gid_t *grouplist;
1774             int i;
1775
1776             grouplist = alloca(gidsetsize * sizeof(gid_t));
1777             for(i = 0;i < gidsetsize; i++)
1778                 grouplist[i] = tswap16(target_grouplist[i]);
1779             ret = get_errno(setgroups(gidsetsize, grouplist));
1780         }
1781         break;
1782     case TARGET_NR_select:
1783         {
1784             struct target_sel_arg_struct *sel = (void *)arg1;
1785             sel->n = tswapl(sel->n);
1786             sel->inp = tswapl(sel->inp);
1787             sel->outp = tswapl(sel->outp);
1788             sel->exp = tswapl(sel->exp);
1789             sel->tvp = tswapl(sel->tvp);
1790             ret = do_select(sel->n, (void *)sel->inp, (void *)sel->outp,
1791                             (void *)sel->exp, (void *)sel->tvp);
1792         }
1793         break;
1794     case TARGET_NR_symlink:
1795         ret = get_errno(symlink((const char *)arg1, (const char *)arg2));
1796         break;
1797     case TARGET_NR_oldlstat:
1798         goto unimplemented;
1799     case TARGET_NR_readlink:
1800         ret = get_errno(readlink(path((const char *)arg1), (char *)arg2, arg3));
1801         break;
1802     case TARGET_NR_uselib:
1803         goto unimplemented;
1804     case TARGET_NR_swapon:
1805         ret = get_errno(swapon((const char *)arg1, arg2));
1806         break;
1807     case TARGET_NR_reboot:
1808         goto unimplemented;
1809     case TARGET_NR_readdir:
1810         goto unimplemented;
1811     case TARGET_NR_mmap:
1812 #if defined(TARGET_I386) || defined(TARGET_ARM)
1813         {
1814             uint32_t v1, v2, v3, v4, v5, v6, *vptr;
1815             vptr = (uint32_t *)arg1;
1816             v1 = tswap32(vptr[0]);
1817             v2 = tswap32(vptr[1]);
1818             v3 = tswap32(vptr[2]);
1819             v4 = tswap32(vptr[3]);
1820             v5 = tswap32(vptr[4]);
1821             v6 = tswap32(vptr[5]);
1822             ret = get_errno(target_mmap(v1, v2, v3,
1823                                         target_to_host_bitmask(v4, mmap_flags_tbl),
1824                                         v5, v6));
1825         }
1826 #else
1827         ret = get_errno(target_mmap(arg1, arg2, arg3,
1828                                     target_to_host_bitmask(arg4, mmap_flags_tbl),
1829                                     arg5,
1830                                     arg6));
1831 #endif
1832         break;
1833     case TARGET_NR_mmap2:
1834         ret = get_errno(target_mmap(arg1, arg2, arg3,
1835                                     target_to_host_bitmask(arg4, mmap_flags_tbl),
1836                                     arg5,
1837                                     arg6 << TARGET_PAGE_BITS));
1838         break;
1839     case TARGET_NR_munmap:
1840         ret = get_errno(target_munmap(arg1, arg2));
1841         break;
1842     case TARGET_NR_mprotect:
1843         ret = get_errno(target_mprotect(arg1, arg2, arg3));
1844         break;
1845     case TARGET_NR_mremap:
1846         ret = get_errno(target_mremap(arg1, arg2, arg3, arg4, arg5));
1847         break;
1848     case TARGET_NR_msync:
1849         ret = get_errno(msync((void *)arg1, arg2, arg3));
1850         break;
1851     case TARGET_NR_mlock:
1852         ret = get_errno(mlock((void *)arg1, arg2));
1853         break;
1854     case TARGET_NR_munlock:
1855         ret = get_errno(munlock((void *)arg1, arg2));
1856         break;
1857     case TARGET_NR_mlockall:
1858         ret = get_errno(mlockall(arg1));
1859         break;
1860     case TARGET_NR_munlockall:
1861         ret = get_errno(munlockall());
1862         break;
1863     case TARGET_NR_truncate:
1864         ret = get_errno(truncate((const char *)arg1, arg2));
1865         break;
1866     case TARGET_NR_ftruncate:
1867         ret = get_errno(ftruncate(arg1, arg2));
1868         break;
1869     case TARGET_NR_fchmod:
1870         ret = get_errno(fchmod(arg1, arg2));
1871         break;
1872     case TARGET_NR_fchown:
1873         ret = get_errno(fchown(arg1, arg2, arg3));
1874         break;
1875     case TARGET_NR_getpriority:
1876         ret = get_errno(getpriority(arg1, arg2));
1877         break;
1878     case TARGET_NR_setpriority:
1879         ret = get_errno(setpriority(arg1, arg2, arg3));
1880         break;
1881     case TARGET_NR_profil:
1882         goto unimplemented;
1883     case TARGET_NR_statfs:
1884         stfs = (void *)arg2;
1885         ret = get_errno(sys_statfs(path((const char *)arg1), stfs));
1886     convert_statfs:
1887         if (!is_error(ret)) {
1888             tswap32s(&stfs->f_type);
1889             tswap32s(&stfs->f_bsize);
1890             tswap32s(&stfs->f_blocks);
1891             tswap32s(&stfs->f_bfree);
1892             tswap32s(&stfs->f_bavail);
1893             tswap32s(&stfs->f_files);
1894             tswap32s(&stfs->f_ffree);
1895             tswap32s(&stfs->f_fsid.val[0]);
1896             tswap32s(&stfs->f_fsid.val[1]);
1897             tswap32s(&stfs->f_namelen);
1898         }
1899         break;
1900     case TARGET_NR_fstatfs:
1901         stfs = (void *)arg2;
1902         ret = get_errno(sys_fstatfs(arg1, stfs));
1903         goto convert_statfs;
1904     case TARGET_NR_ioperm:
1905         goto unimplemented;
1906     case TARGET_NR_socketcall:
1907         ret = do_socketcall(arg1, (int32_t *)arg2);
1908         break;
1909     case TARGET_NR_syslog:
1910         goto unimplemented;
1911     case TARGET_NR_setitimer:
1912         {
1913             struct target_itimerval *target_value = (void *)arg2;
1914             struct target_itimerval *target_ovalue = (void *)arg3;
1915             struct itimerval value, ovalue, *pvalue;
1916
1917             if (target_value) {
1918                 pvalue = &value;
1919                 target_to_host_timeval(&pvalue->it_interval,
1920                                        &target_value->it_interval);
1921                 target_to_host_timeval(&pvalue->it_value,
1922                                        &target_value->it_value);
1923             } else {
1924                 pvalue = NULL;
1925             }
1926             ret = get_errno(setitimer(arg1, pvalue, &ovalue));
1927             if (!is_error(ret) && target_ovalue) {
1928                 host_to_target_timeval(&target_ovalue->it_interval,
1929                                        &ovalue.it_interval);
1930                 host_to_target_timeval(&target_ovalue->it_value,
1931                                        &ovalue.it_value);
1932             }
1933         }
1934         break;
1935     case TARGET_NR_getitimer:
1936         {
1937             struct target_itimerval *target_value = (void *)arg2;
1938             struct itimerval value;
1939
1940             ret = get_errno(getitimer(arg1, &value));
1941             if (!is_error(ret) && target_value) {
1942                 host_to_target_timeval(&target_value->it_interval,
1943                                        &value.it_interval);
1944                 host_to_target_timeval(&target_value->it_value,
1945                                        &value.it_value);
1946             }
1947         }
1948         break;
1949     case TARGET_NR_stat:
1950         ret = get_errno(stat(path((const char *)arg1), &st));
1951         goto do_stat;
1952     case TARGET_NR_lstat:
1953         ret = get_errno(lstat(path((const char *)arg1), &st));
1954         goto do_stat;
1955     case TARGET_NR_fstat:
1956         {
1957             ret = get_errno(fstat(arg1, &st));
1958         do_stat:
1959             if (!is_error(ret)) {
1960                 struct target_stat *target_st = (void *)arg2;
1961                 target_st->st_dev = tswap16(st.st_dev);
1962                 target_st->st_ino = tswapl(st.st_ino);
1963                 target_st->st_mode = tswap16(st.st_mode);
1964                 target_st->st_nlink = tswap16(st.st_nlink);
1965                 target_st->st_uid = tswap16(st.st_uid);
1966                 target_st->st_gid = tswap16(st.st_gid);
1967                 target_st->st_rdev = tswap16(st.st_rdev);
1968                 target_st->st_size = tswapl(st.st_size);
1969                 target_st->st_blksize = tswapl(st.st_blksize);
1970                 target_st->st_blocks = tswapl(st.st_blocks);
1971                 target_st->target_st_atime = tswapl(st.st_atime);
1972                 target_st->target_st_mtime = tswapl(st.st_mtime);
1973                 target_st->target_st_ctime = tswapl(st.st_ctime);
1974             }
1975         }
1976         break;
1977     case TARGET_NR_olduname:
1978         goto unimplemented;
1979     case TARGET_NR_iopl:
1980         goto unimplemented;
1981     case TARGET_NR_vhangup:
1982         ret = get_errno(vhangup());
1983         break;
1984     case TARGET_NR_idle:
1985         goto unimplemented;
1986     case TARGET_NR_wait4:
1987         {
1988             int status;
1989             target_long *status_ptr = (void *)arg2;
1990             struct rusage rusage, *rusage_ptr;
1991             struct target_rusage *target_rusage = (void *)arg4;
1992             if (target_rusage)
1993                 rusage_ptr = &rusage;
1994             else
1995                 rusage_ptr = NULL;
1996             ret = get_errno(wait4(arg1, &status, arg3, rusage_ptr));
1997             if (!is_error(ret)) {
1998                 if (status_ptr)
1999                     *status_ptr = tswap32(status);
2000                 if (target_rusage) {
2001                     host_to_target_rusage(target_rusage, &rusage);
2002                 }
2003             }
2004         }
2005         break;
2006     case TARGET_NR_swapoff:
2007         ret = get_errno(swapoff((const char *)arg1));
2008         break;
2009     case TARGET_NR_sysinfo:
2010         goto unimplemented;
2011     case TARGET_NR_ipc:
2012         goto unimplemented;
2013     case TARGET_NR_fsync:
2014         ret = get_errno(fsync(arg1));
2015         break;
2016     case TARGET_NR_clone:
2017         ret = get_errno(do_fork(cpu_env, arg1, arg2));
2018         break;
2019 #ifdef __NR_exit_group
2020         /* new thread calls */
2021     case TARGET_NR_exit_group:
2022         ret = get_errno(exit_group(arg1));
2023         break;
2024 #endif
2025     case TARGET_NR_setdomainname:
2026         ret = get_errno(setdomainname((const char *)arg1, arg2));
2027         break;
2028     case TARGET_NR_uname:
2029         /* no need to transcode because we use the linux syscall */
2030         ret = get_errno(sys_uname((struct new_utsname *)arg1));
2031         break;
2032 #ifdef TARGET_I386
2033     case TARGET_NR_modify_ldt:
2034         ret = get_errno(do_modify_ldt(cpu_env, arg1, (void *)arg2, arg3));
2035         break;
2036     case TARGET_NR_vm86old:
2037         goto unimplemented;
2038     case TARGET_NR_vm86:
2039         ret = do_vm86(cpu_env, arg1, (void *)arg2);
2040         break;
2041 #endif
2042     case TARGET_NR_adjtimex:
2043         goto unimplemented;
2044     case TARGET_NR_create_module:
2045     case TARGET_NR_init_module:
2046     case TARGET_NR_delete_module:
2047     case TARGET_NR_get_kernel_syms:
2048         goto unimplemented;
2049     case TARGET_NR_quotactl:
2050         goto unimplemented;
2051     case TARGET_NR_getpgid:
2052         ret = get_errno(getpgid(arg1));
2053         break;
2054     case TARGET_NR_fchdir:
2055         ret = get_errno(fchdir(arg1));
2056         break;
2057     case TARGET_NR_bdflush:
2058         goto unimplemented;
2059     case TARGET_NR_sysfs:
2060         goto unimplemented;
2061     case TARGET_NR_personality:
2062         ret = get_errno(personality(arg1));
2063         break;
2064     case TARGET_NR_afs_syscall:
2065         goto unimplemented;
2066     case TARGET_NR_setfsuid:
2067         ret = get_errno(setfsuid(arg1));
2068         break;
2069     case TARGET_NR_setfsgid:
2070         ret = get_errno(setfsgid(arg1));
2071         break;
2072     case TARGET_NR__llseek:
2073         {
2074             int64_t res;
2075             ret = get_errno(_llseek(arg1, arg2, arg3, &res, arg5));
2076             *(int64_t *)arg4 = tswap64(res);
2077         }
2078         break;
2079     case TARGET_NR_getdents:
2080 #if TARGET_LONG_SIZE != 4
2081 #error not supported
2082 #elif TARGET_LONG_SIZE == 4 && HOST_LONG_SIZE == 8
2083         {
2084             struct target_dirent *target_dirp = (void *)arg2;
2085             struct dirent *dirp;
2086             long count = arg3;
2087
2088             dirp = malloc(count);
2089             if (!dirp)
2090                 return -ENOMEM;
2091
2092             ret = get_errno(sys_getdents(arg1, dirp, count));
2093             if (!is_error(ret)) {
2094                 struct dirent *de;
2095                 struct target_dirent *tde;
2096                 int len = ret;
2097                 int reclen, treclen;
2098                 int count1, tnamelen;
2099
2100                 count1 = 0;
2101                 de = dirp;
2102                 tde = target_dirp;
2103                 while (len > 0) {
2104                     reclen = de->d_reclen;
2105                     treclen = reclen - (2 * (sizeof(long) - sizeof(target_long)));
2106                     tde->d_reclen = tswap16(treclen);
2107                     tde->d_ino = tswapl(de->d_ino);
2108                     tde->d_off = tswapl(de->d_off);
2109                     tnamelen = treclen - (2 * sizeof(target_long) + 2);
2110                     if (tnamelen > 256)
2111                         tnamelen = 256;
2112                     strncpy(tde->d_name, de->d_name, tnamelen);
2113                     de = (struct dirent *)((char *)de + reclen);
2114                     len -= reclen;
2115                     tde = (struct dirent *)((char *)tde + treclen);
2116                     count1 += treclen;
2117                 }
2118                 ret = count1;
2119             }
2120             free(dirp);
2121         }
2122 #else
2123         {
2124             struct dirent *dirp = (void *)arg2;
2125             long count = arg3;
2126
2127             ret = get_errno(sys_getdents(arg1, dirp, count));
2128             if (!is_error(ret)) {
2129                 struct dirent *de;
2130                 int len = ret;
2131                 int reclen;
2132                 de = dirp;
2133                 while (len > 0) {
2134                     reclen = de->d_reclen;
2135                     if (reclen > len)
2136                         break;
2137                     de->d_reclen = tswap16(reclen);
2138                     tswapls(&de->d_ino);
2139                     tswapls(&de->d_off);
2140                     de = (struct dirent *)((char *)de + reclen);
2141                     len -= reclen;
2142                 }
2143             }
2144         }
2145 #endif
2146         break;
2147     case TARGET_NR_getdents64:
2148         {
2149             struct dirent64 *dirp = (void *)arg2;
2150             long count = arg3;
2151             ret = get_errno(sys_getdents64(arg1, dirp, count));
2152             if (!is_error(ret)) {
2153                 struct dirent64 *de;
2154                 int len = ret;
2155                 int reclen;
2156                 de = dirp;
2157                 while (len > 0) {
2158                     reclen = de->d_reclen;
2159                     if (reclen > len)
2160                         break;
2161                     de->d_reclen = tswap16(reclen);
2162                     tswap64s(&de->d_ino);
2163                     tswap64s(&de->d_off);
2164                     de = (struct dirent64 *)((char *)de + reclen);
2165                     len -= reclen;
2166                 }
2167             }
2168         }
2169         break;
2170     case TARGET_NR__newselect:
2171         ret = do_select(arg1, (void *)arg2, (void *)arg3, (void *)arg4,
2172                         (void *)arg5);
2173         break;
2174     case TARGET_NR_poll:
2175         {
2176             struct target_pollfd *target_pfd = (void *)arg1;
2177             unsigned int nfds = arg2;
2178             int timeout = arg3;
2179             struct pollfd *pfd;
2180             unsigned int i;
2181
2182             pfd = alloca(sizeof(struct pollfd) * nfds);
2183             for(i = 0; i < nfds; i++) {
2184                 pfd[i].fd = tswap32(target_pfd[i].fd);
2185                 pfd[i].events = tswap16(target_pfd[i].events);
2186             }
2187             ret = get_errno(poll(pfd, nfds, timeout));
2188             if (!is_error(ret)) {
2189                 for(i = 0; i < nfds; i++) {
2190                     target_pfd[i].revents = tswap16(pfd[i].revents);
2191                 }
2192             }
2193         }
2194         break;
2195     case TARGET_NR_flock:
2196         /* NOTE: the flock constant seems to be the same for every
2197            Linux platform */
2198         ret = get_errno(flock(arg1, arg2));
2199         break;
2200     case TARGET_NR_readv:
2201         {
2202             int count = arg3;
2203             int i;
2204             struct iovec *vec;
2205             struct target_iovec *target_vec = (void *)arg2;
2206
2207             vec = alloca(count * sizeof(struct iovec));
2208             for(i = 0;i < count; i++) {
2209                 vec[i].iov_base = (void *)tswapl(target_vec[i].iov_base);
2210                 vec[i].iov_len = tswapl(target_vec[i].iov_len);
2211             }
2212             ret = get_errno(readv(arg1, vec, count));
2213         }
2214         break;
2215     case TARGET_NR_writev:
2216         {
2217             int count = arg3;
2218             int i;
2219             struct iovec *vec;
2220             struct target_iovec *target_vec = (void *)arg2;
2221
2222             vec = alloca(count * sizeof(struct iovec));
2223             for(i = 0;i < count; i++) {
2224                 vec[i].iov_base = (void *)tswapl(target_vec[i].iov_base);
2225                 vec[i].iov_len = tswapl(target_vec[i].iov_len);
2226             }
2227             ret = get_errno(writev(arg1, vec, count));
2228         }
2229         break;
2230     case TARGET_NR_getsid:
2231         ret = get_errno(getsid(arg1));
2232         break;
2233     case TARGET_NR_fdatasync:
2234         ret = get_errno(fdatasync(arg1));
2235         break;
2236     case TARGET_NR__sysctl:
2237         goto unimplemented;
2238     case TARGET_NR_sched_setparam:
2239         {
2240             struct sched_param *target_schp = (void *)arg2;
2241             struct sched_param schp;
2242             schp.sched_priority = tswap32(target_schp->sched_priority);
2243             ret = get_errno(sched_setparam(arg1, &schp));
2244         }
2245         break;
2246     case TARGET_NR_sched_getparam:
2247         {
2248             struct sched_param *target_schp = (void *)arg2;
2249             struct sched_param schp;
2250             ret = get_errno(sched_getparam(arg1, &schp));
2251             if (!is_error(ret)) {
2252                 target_schp->sched_priority = tswap32(schp.sched_priority);
2253             }
2254         }
2255         break;
2256     case TARGET_NR_sched_setscheduler:
2257         {
2258             struct sched_param *target_schp = (void *)arg3;
2259             struct sched_param schp;
2260             schp.sched_priority = tswap32(target_schp->sched_priority);
2261             ret = get_errno(sched_setscheduler(arg1, arg2, &schp));
2262         }
2263         break;
2264     case TARGET_NR_sched_getscheduler:
2265         ret = get_errno(sched_getscheduler(arg1));
2266         break;
2267     case TARGET_NR_sched_yield:
2268         ret = get_errno(sched_yield());
2269         break;
2270     case TARGET_NR_sched_get_priority_max:
2271         ret = get_errno(sched_get_priority_max(arg1));
2272         break;
2273     case TARGET_NR_sched_get_priority_min:
2274         ret = get_errno(sched_get_priority_min(arg1));
2275         break;
2276     case TARGET_NR_sched_rr_get_interval:
2277         {
2278             struct target_timespec *target_ts = (void *)arg2;
2279             struct timespec ts;
2280             ret = get_errno(sched_rr_get_interval(arg1, &ts));
2281             if (!is_error(ret)) {
2282                 target_ts->tv_sec = tswapl(ts.tv_sec);
2283                 target_ts->tv_nsec = tswapl(ts.tv_nsec);
2284             }
2285         }
2286         break;
2287     case TARGET_NR_nanosleep:
2288         {
2289             struct target_timespec *target_req = (void *)arg1;
2290             struct target_timespec *target_rem = (void *)arg2;
2291             struct timespec req, rem;
2292             req.tv_sec = tswapl(target_req->tv_sec);
2293             req.tv_nsec = tswapl(target_req->tv_nsec);
2294             ret = get_errno(nanosleep(&req, &rem));
2295             if (target_rem) {
2296                 target_rem->tv_sec = tswapl(rem.tv_sec);
2297                 target_rem->tv_nsec = tswapl(rem.tv_nsec);
2298             }
2299         }
2300         break;
2301     case TARGET_NR_setresuid:
2302         ret = get_errno(setresuid(low2highuid(arg1),
2303                                   low2highuid(arg2),
2304                                   low2highuid(arg3)));
2305         break;
2306     case TARGET_NR_getresuid:
2307         {
2308             int ruid, euid, suid;
2309             ret = get_errno(getresuid(&ruid, &euid, &suid));
2310             if (!is_error(ret)) {
2311                 *(uint16_t *)arg1 = tswap16(high2lowuid(ruid));
2312                 *(uint16_t *)arg2 = tswap16(high2lowuid(euid));
2313                 *(uint16_t *)arg3 = tswap16(high2lowuid(suid));
2314             }
2315         }
2316         break;
2317     case TARGET_NR_setresgid:
2318         ret = get_errno(setresgid(low2highgid(arg1),
2319                                   low2highgid(arg2),
2320                                   low2highgid(arg3)));
2321         break;
2322     case TARGET_NR_getresgid:
2323         {
2324             int rgid, egid, sgid;
2325             ret = get_errno(getresgid(&rgid, &egid, &sgid));
2326             if (!is_error(ret)) {
2327                 *(uint16_t *)arg1 = high2lowgid(tswap16(rgid));
2328                 *(uint16_t *)arg2 = high2lowgid(tswap16(egid));
2329                 *(uint16_t *)arg3 = high2lowgid(tswap16(sgid));
2330             }
2331         }
2332         break;
2333     case TARGET_NR_query_module:
2334         goto unimplemented;
2335     case TARGET_NR_nfsservctl:
2336         goto unimplemented;
2337     case TARGET_NR_prctl:
2338         goto unimplemented;
2339     case TARGET_NR_pread:
2340         page_unprotect_range((void *)arg2, arg3);
2341         ret = get_errno(pread(arg1, (void *)arg2, arg3, arg4));
2342         break;
2343     case TARGET_NR_pwrite:
2344         ret = get_errno(pwrite(arg1, (void *)arg2, arg3, arg4));
2345         break;
2346     case TARGET_NR_chown:
2347         ret = get_errno(chown((const char *)arg1, arg2, arg3));
2348         break;
2349     case TARGET_NR_getcwd:
2350         ret = get_errno(sys_getcwd1((char *)arg1, arg2));
2351         break;
2352     case TARGET_NR_capget:
2353         goto unimplemented;
2354     case TARGET_NR_capset:
2355         goto unimplemented;
2356     case TARGET_NR_sigaltstack:
2357         goto unimplemented;
2358     case TARGET_NR_sendfile:
2359         goto unimplemented;
2360     case TARGET_NR_getpmsg:
2361         goto unimplemented;
2362     case TARGET_NR_putpmsg:
2363         goto unimplemented;
2364     case TARGET_NR_vfork:
2365         ret = get_errno(do_fork(cpu_env, CLONE_VFORK | CLONE_VM | SIGCHLD, 0));
2366         break;
2367     case TARGET_NR_ugetrlimit:
2368     {
2369         struct rlimit rlim;
2370         ret = get_errno(getrlimit(arg1, &rlim));
2371         if (!is_error(ret)) {
2372             struct target_rlimit *target_rlim = (void *)arg2;
2373             target_rlim->rlim_cur = tswapl(rlim.rlim_cur);
2374             target_rlim->rlim_max = tswapl(rlim.rlim_max);
2375         }
2376         break;
2377     }
2378     case TARGET_NR_truncate64:
2379         goto unimplemented;
2380     case TARGET_NR_ftruncate64:
2381         goto unimplemented;
2382     case TARGET_NR_stat64:
2383         ret = get_errno(stat(path((const char *)arg1), &st));
2384         goto do_stat64;
2385     case TARGET_NR_lstat64:
2386         ret = get_errno(lstat(path((const char *)arg1), &st));
2387         goto do_stat64;
2388     case TARGET_NR_fstat64:
2389         {
2390             ret = get_errno(fstat(arg1, &st));
2391         do_stat64:
2392             if (!is_error(ret)) {
2393                 struct target_stat64 *target_st = (void *)arg2;
2394                 memset(target_st, 0, sizeof(struct target_stat64));
2395                 target_st->st_dev = tswap16(st.st_dev);
2396                 target_st->st_ino = tswap64(st.st_ino);
2397 #ifdef TARGET_STAT64_HAS_BROKEN_ST_INO
2398                 target_st->__st_ino = tswapl(st.st_ino);
2399 #endif
2400                 target_st->st_mode = tswap32(st.st_mode);
2401                 target_st->st_nlink = tswap32(st.st_nlink);
2402                 target_st->st_uid = tswapl(st.st_uid);
2403                 target_st->st_gid = tswapl(st.st_gid);
2404                 target_st->st_rdev = tswap16(st.st_rdev);
2405                 /* XXX: better use of kernel struct */
2406                 target_st->st_size = tswap64(st.st_size);
2407                 target_st->st_blksize = tswapl(st.st_blksize);
2408                 target_st->st_blocks = tswapl(st.st_blocks);
2409                 target_st->target_st_atime = tswapl(st.st_atime);
2410                 target_st->target_st_mtime = tswapl(st.st_mtime);
2411                 target_st->target_st_ctime = tswapl(st.st_ctime);
2412             }
2413         }
2414         break;
2415
2416     case TARGET_NR_lchown32:
2417         ret = get_errno(lchown((const char *)arg1, arg2, arg3));
2418         break;
2419     case TARGET_NR_getuid32:
2420         ret = get_errno(getuid());
2421         break;
2422     case TARGET_NR_getgid32:
2423         ret = get_errno(getgid());
2424         break;
2425     case TARGET_NR_geteuid32:
2426         ret = get_errno(geteuid());
2427         break;
2428     case TARGET_NR_getegid32:
2429         ret = get_errno(getegid());
2430         break;
2431     case TARGET_NR_setreuid32:
2432         ret = get_errno(setreuid(arg1, arg2));
2433         break;
2434     case TARGET_NR_setregid32:
2435         ret = get_errno(setregid(arg1, arg2));
2436         break;
2437     case TARGET_NR_getgroups32:
2438         goto unimplemented;
2439     case TARGET_NR_setgroups32:
2440         goto unimplemented;
2441     case TARGET_NR_fchown32:
2442         ret = get_errno(fchown(arg1, arg2, arg3));
2443         break;
2444     case TARGET_NR_setresuid32:
2445         ret = get_errno(setresuid(arg1, arg2, arg3));
2446         break;
2447     case TARGET_NR_getresuid32:
2448         {
2449             int ruid, euid, suid;
2450             ret = get_errno(getresuid(&ruid, &euid, &suid));
2451             if (!is_error(ret)) {
2452                 *(uint32_t *)arg1 = tswap32(ruid);
2453                 *(uint32_t *)arg2 = tswap32(euid);
2454                 *(uint32_t *)arg3 = tswap32(suid);
2455             }
2456         }
2457         break;
2458     case TARGET_NR_setresgid32:
2459         ret = get_errno(setresgid(arg1, arg2, arg3));
2460         break;
2461     case TARGET_NR_getresgid32:
2462         {
2463             int rgid, egid, sgid;
2464             ret = get_errno(getresgid(&rgid, &egid, &sgid));
2465             if (!is_error(ret)) {
2466                 *(uint32_t *)arg1 = tswap32(rgid);
2467                 *(uint32_t *)arg2 = tswap32(egid);
2468                 *(uint32_t *)arg3 = tswap32(sgid);
2469             }
2470         }
2471         break;
2472     case TARGET_NR_chown32:
2473         ret = get_errno(chown((const char *)arg1, arg2, arg3));
2474         break;
2475     case TARGET_NR_setuid32:
2476         ret = get_errno(setuid(arg1));
2477         break;
2478     case TARGET_NR_setgid32:
2479         ret = get_errno(setgid(arg1));
2480         break;
2481     case TARGET_NR_setfsuid32:
2482         ret = get_errno(setfsuid(arg1));
2483         break;
2484     case TARGET_NR_setfsgid32:
2485         ret = get_errno(setfsgid(arg1));
2486         break;
2487     case TARGET_NR_pivot_root:
2488         goto unimplemented;
2489     case TARGET_NR_mincore:
2490         goto unimplemented;
2491     case TARGET_NR_madvise:
2492         goto unimplemented;
2493 #if TARGET_LONG_BITS == 32
2494     case TARGET_NR_fcntl64:
2495     {
2496         struct flock64 fl;
2497         struct target_flock64 *target_fl = (void *)arg3;
2498
2499         switch(arg2) {
2500         case F_GETLK64:
2501             ret = get_errno(fcntl(arg1, arg2, &fl));
2502             if (ret == 0) {
2503                 target_fl->l_type = tswap16(fl.l_type);
2504                 target_fl->l_whence = tswap16(fl.l_whence);
2505                 target_fl->l_start = tswap64(fl.l_start);
2506                 target_fl->l_len = tswap64(fl.l_len);
2507                 target_fl->l_pid = tswapl(fl.l_pid);
2508             }
2509             break;
2510
2511         case F_SETLK64:
2512         case F_SETLKW64:
2513             fl.l_type = tswap16(target_fl->l_type);
2514             fl.l_whence = tswap16(target_fl->l_whence);
2515             fl.l_start = tswap64(target_fl->l_start);
2516             fl.l_len = tswap64(target_fl->l_len);
2517             fl.l_pid = tswapl(target_fl->l_pid);
2518             ret = get_errno(fcntl(arg1, arg2, &fl));
2519             break;
2520         default:
2521             ret = get_errno(do_fcntl(arg1, arg2, arg3));
2522             break;
2523         }
2524         break;
2525     }
2526 #endif
2527     case TARGET_NR_security:
2528         goto unimplemented;
2529     case TARGET_NR_gettid:
2530         ret = get_errno(gettid());
2531         break;
2532     case TARGET_NR_readahead:
2533         goto unimplemented;
2534     case TARGET_NR_setxattr:
2535     case TARGET_NR_lsetxattr:
2536     case TARGET_NR_fsetxattr:
2537     case TARGET_NR_getxattr:
2538     case TARGET_NR_lgetxattr:
2539     case TARGET_NR_fgetxattr:
2540     case TARGET_NR_listxattr:
2541     case TARGET_NR_llistxattr:
2542     case TARGET_NR_flistxattr:
2543     case TARGET_NR_removexattr:
2544     case TARGET_NR_lremovexattr:
2545     case TARGET_NR_fremovexattr:
2546         goto unimplemented_nowarn;
2547     case TARGET_NR_set_thread_area:
2548     case TARGET_NR_get_thread_area:
2549         goto unimplemented_nowarn;
2550     default:
2551     unimplemented:
2552         gemu_log("qemu: Unsupported syscall: %d\n", num);
2553     unimplemented_nowarn:
2554         ret = -ENOSYS;
2555         break;
2556     }
2557  fail:
2558     return ret;
2559 }
2560