git.maemo.org Git - qemu/blob - linux-user/syscall.c

   1 /*
   2  *  Linux syscalls
   3  *
   4  *  Copyright (c) 2003 Fabrice Bellard
   5  *
   6  *  This program is free software; you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License as published by
   8  *  the Free Software Foundation; either version 2 of the License, or
   9  *  (at your option) any later version.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with this program; if not, write to the Free Software
  18  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  19  */
  20 #include <stdlib.h>
  21 #include <stdio.h>
  22 #include <stdarg.h>
  23 #include <string.h>
  24 #include <elf.h>
  25 #include <endian.h>
  26 #include <errno.h>
  27 #include <unistd.h>
  28 #include <fcntl.h>
  29 #include <time.h>
  30 #include <sys/types.h>
  31 #include <sys/wait.h>
  32 #include <sys/time.h>
  33 #include <sys/stat.h>
  34 #include <sys/mount.h>
  35 #include <sys/resource.h>
  36 #include <sys/mman.h>
  37 #include <sys/swap.h>
  38 #include <signal.h>
  39 #include <sched.h>
  40 #include <sys/socket.h>
  41 #include <sys/uio.h>
  42 #include <sys/poll.h>
  43 #include <sys/times.h>
  44 #include <utime.h>
  45 //#include <sys/user.h>
  46 #include <netinet/tcp.h>
  47
  48 #define termios host_termios
  49 #define winsize host_winsize
  50 #define termio host_termio
  51 #define sgttyb host_sgttyb /* same as target */
  52 #define tchars host_tchars /* same as target */
  53 #define ltchars host_ltchars /* same as target */
  54
  55 #include <linux/termios.h>
  56 #include <linux/unistd.h>
  57 #include <linux/utsname.h>
  58 #include <linux/cdrom.h>
  59 #include <linux/hdreg.h>
  60 #include <linux/soundcard.h>
  61 #include <linux/dirent.h>
  62 #include <linux/kd.h>
  63
  64 #include "qemu.h"
  65
  66 //#define DEBUG
  67
  68 #if defined(TARGET_I386) || defined(TARGET_ARM) || defined(TARGET_SPARC)
  69 /* 16 bit uid wrappers emulation */
  70 #define USE_UID16
  71 #endif
  72
  73 //#include <linux/msdos_fs.h>
  74 #define VFAT_IOCTL_READDIR_BOTH         _IOR('r', 1, struct dirent [2])
  75 #define VFAT_IOCTL_READDIR_SHORT        _IOR('r', 2, struct dirent [2])
  76
  77
  78 #if defined(__powerpc__)
  79 #undef __syscall_nr
  80 #undef __sc_loadargs_0
  81 #undef __sc_loadargs_1
  82 #undef __sc_loadargs_2
  83 #undef __sc_loadargs_3
  84 #undef __sc_loadargs_4
  85 #undef __sc_loadargs_5
  86 #undef __sc_asm_input_0
  87 #undef __sc_asm_input_1
  88 #undef __sc_asm_input_2
  89 #undef __sc_asm_input_3
  90 #undef __sc_asm_input_4
  91 #undef __sc_asm_input_5
  92 #undef _syscall0
  93 #undef _syscall1
  94 #undef _syscall2
  95 #undef _syscall3
  96 #undef _syscall4
  97 #undef _syscall5
  98
  99 /* need to redefine syscalls as Linux kernel defines are incorrect for
 100    the clobber list */
 101 /* On powerpc a system call basically clobbers the same registers like a
 102  * function call, with the exception of LR (which is needed for the
 103  * "sc; bnslr" sequence) and CR (where only CR0.SO is clobbered to signal
 104  * an error return status).
 105  */
 106
 107 #define __syscall_nr(nr, type, name, args...)                           \
 108         unsigned long __sc_ret, __sc_err;                               \
 109         {                                                               \
 110                 register unsigned long __sc_0  __asm__ ("r0");          \
 111                 register unsigned long __sc_3  __asm__ ("r3");          \
 112                 register unsigned long __sc_4  __asm__ ("r4");          \
 113                 register unsigned long __sc_5  __asm__ ("r5");          \
 114                 register unsigned long __sc_6  __asm__ ("r6");          \
 115                 register unsigned long __sc_7  __asm__ ("r7");          \
 116                                                                         \
 117                 __sc_loadargs_##nr(name, args);                         \
 118                 __asm__ __volatile__                                    \
 119                         ("sc           \n\t"                            \
 120                          "mfcr %0      "                                \
 121                         : "=&r" (__sc_0),                               \
 122                           "=&r" (__sc_3),  "=&r" (__sc_4),              \
 123                           "=&r" (__sc_5),  "=&r" (__sc_6),              \
 124                           "=&r" (__sc_7)                                \
 125                         : __sc_asm_input_##nr                           \
 126                         : "cr0", "ctr", "memory",                       \
 127                           "r8", "r9", "r10","r11", "r12");              \
 128                 __sc_ret = __sc_3;                                      \
 129                 __sc_err = __sc_0;                                      \
 130         }                                                               \
 131         if (__sc_err & 0x10000000)                                      \
 132         {                                                               \
 133                 errno = __sc_ret;                                       \
 134                 __sc_ret = -1;                                          \
 135         }                                                               \
 136         return (type) __sc_ret
 137
 138 #define __sc_loadargs_0(name, dummy...)                                 \
 139         __sc_0 = __NR_##name
 140 #define __sc_loadargs_1(name, arg1)                                     \
 141         __sc_loadargs_0(name);                                          \
 142         __sc_3 = (unsigned long) (arg1)
 143 #define __sc_loadargs_2(name, arg1, arg2)                               \
 144         __sc_loadargs_1(name, arg1);                                    \
 145         __sc_4 = (unsigned long) (arg2)
 146 #define __sc_loadargs_3(name, arg1, arg2, arg3)                         \
 147         __sc_loadargs_2(name, arg1, arg2);                              \
 148         __sc_5 = (unsigned long) (arg3)
 149 #define __sc_loadargs_4(name, arg1, arg2, arg3, arg4)                   \
 150         __sc_loadargs_3(name, arg1, arg2, arg3);                        \
 151         __sc_6 = (unsigned long) (arg4)
 152 #define __sc_loadargs_5(name, arg1, arg2, arg3, arg4, arg5)             \
 153         __sc_loadargs_4(name, arg1, arg2, arg3, arg4);                  \
 154         __sc_7 = (unsigned long) (arg5)
 155
 156 #define __sc_asm_input_0 "0" (__sc_0)
 157 #define __sc_asm_input_1 __sc_asm_input_0, "1" (__sc_3)
 158 #define __sc_asm_input_2 __sc_asm_input_1, "2" (__sc_4)
 159 #define __sc_asm_input_3 __sc_asm_input_2, "3" (__sc_5)
 160 #define __sc_asm_input_4 __sc_asm_input_3, "4" (__sc_6)
 161 #define __sc_asm_input_5 __sc_asm_input_4, "5" (__sc_7)
 162
 163 #define _syscall0(type,name)                                            \
 164 type name(void)                                                         \
 165 {                                                                       \
 166         __syscall_nr(0, type, name);                                    \
 167 }
 168
 169 #define _syscall1(type,name,type1,arg1)                                 \
 170 type name(type1 arg1)                                                   \
 171 {                                                                       \
 172         __syscall_nr(1, type, name, arg1);                              \
 173 }
 174
 175 #define _syscall2(type,name,type1,arg1,type2,arg2)                      \
 176 type name(type1 arg1, type2 arg2)                                       \
 177 {                                                                       \
 178         __syscall_nr(2, type, name, arg1, arg2);                        \
 179 }
 180
 181 #define _syscall3(type,name,type1,arg1,type2,arg2,type3,arg3)           \
 182 type name(type1 arg1, type2 arg2, type3 arg3)                           \
 183 {                                                                       \
 184         __syscall_nr(3, type, name, arg1, arg2, arg3);                  \
 185 }
 186
 187 #define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4) \
 188 type name(type1 arg1, type2 arg2, type3 arg3, type4 arg4)               \
 189 {                                                                       \
 190         __syscall_nr(4, type, name, arg1, arg2, arg3, arg4);            \
 191 }
 192
 193 #define _syscall5(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4,type5,arg5) \
 194 type name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, type5 arg5)   \
 195 {                                                                       \
 196         __syscall_nr(5, type, name, arg1, arg2, arg3, arg4, arg5);      \
 197 }
 198 #endif
 199
 200 #define __NR_sys_uname __NR_uname
 201 #define __NR_sys_getcwd1 __NR_getcwd
 202 #define __NR_sys_statfs __NR_statfs
 203 #define __NR_sys_fstatfs __NR_fstatfs
 204 #define __NR_sys_getdents __NR_getdents
 205 #define __NR_sys_getdents64 __NR_getdents64
 206 #define __NR_sys_rt_sigqueueinfo __NR_rt_sigqueueinfo
 207
 208 #if defined(__alpha__) || defined (__ia64__)
 209 #define __NR__llseek __NR_lseek
 210 #endif
 211
 212 #ifdef __NR_gettid
 213 _syscall0(int, gettid)
 214 #else
 215 static int gettid(void) {
 216     return -ENOSYS;
 217 }
 218 #endif
 219 _syscall1(int,sys_uname,struct new_utsname *,buf)
 220 _syscall2(int,sys_getcwd1,char *,buf,size_t,size)
 221 _syscall3(int, sys_getdents, uint, fd, struct dirent *, dirp, uint, count);
 222 _syscall3(int, sys_getdents64, uint, fd, struct dirent64 *, dirp, uint, count);
 223 _syscall5(int, _llseek,  uint,  fd, ulong, hi, ulong, lo,
 224           loff_t *, res, uint, wh);
 225 _syscall2(int,sys_statfs,const char *,path,struct kernel_statfs *,buf)
 226 _syscall2(int,sys_fstatfs,int,fd,struct kernel_statfs *,buf)
 227 _syscall3(int,sys_rt_sigqueueinfo,int,pid,int,sig,siginfo_t *,uinfo)
 228 #ifdef __NR_exit_group
 229 _syscall1(int,exit_group,int,error_code)
 230 #endif
 231
 232 extern int personality(int);
 233 extern int flock(int, int);
 234 extern int setfsuid(int);
 235 extern int setfsgid(int);
 236 extern int setresuid(uid_t, uid_t, uid_t);
 237 extern int getresuid(uid_t *, uid_t *, uid_t *);
 238 extern int setresgid(gid_t, gid_t, gid_t);
 239 extern int getresgid(gid_t *, gid_t *, gid_t *);
 240 extern int setgroups(int, gid_t *);
 241
 242 #define put_user(x,ptr)\
 243 ({\
 244     int size = sizeof(*ptr);\
 245     switch(size) {\
 246     case 1:\
 247         stb(ptr, (typeof(*ptr))(x));\
 248         break;\
 249     case 2:\
 250         stw(ptr, (typeof(*ptr))(x));\
 251         break;\
 252     case 4:\
 253         stl(ptr, (typeof(*ptr))(x));\
 254         break;\
 255     case 8:\
 256         stq(ptr, (typeof(*ptr))(x));\
 257         break;\
 258     default:\
 259         abort();\
 260     }\
 261     0;\
 262 })
 263 static inline long get_errno(long ret)
 264 {
 265     if (ret == -1)
 266         return -errno;
 267     else
 268         return ret;
 269 }
 270
 271 static inline int is_error(long ret)
 272 {
 273     return (unsigned long)ret >= (unsigned long)(-4096);
 274 }
 275
 276 static char *target_brk;
 277 static char *target_original_brk;
 278
 279 void target_set_brk(char *new_brk)
 280 {
 281     target_brk = new_brk;
 282     target_original_brk = new_brk;
 283 }
 284
 285 static long do_brk(char *new_brk)
 286 {
 287     char *brk_page;
 288     long mapped_addr;
 289     int new_alloc_size;
 290
 291     if (!new_brk)
 292         return (long)target_brk;
 293     if (new_brk < target_original_brk)
 294         return -ENOMEM;
 295
 296     brk_page = (char *)HOST_PAGE_ALIGN((unsigned long)target_brk);
 297
 298     /* If the new brk is less than this, set it and we're done... */
 299     if (new_brk < brk_page) {
 300         target_brk = new_brk;
 301         return (long)target_brk;
 302     }
 303
 304     /* We need to allocate more memory after the brk... */
 305     new_alloc_size = HOST_PAGE_ALIGN(new_brk - brk_page + 1);
 306     mapped_addr = get_errno(target_mmap((unsigned long)brk_page, new_alloc_size,
 307                                         PROT_READ|PROT_WRITE,
 308                                         MAP_ANON|MAP_FIXED|MAP_PRIVATE, 0, 0));
 309     if (is_error(mapped_addr)) {
 310         return mapped_addr;
 311     } else {
 312         target_brk = new_brk;
 313         return (long)target_brk;
 314     }
 315 }
 316
 317 static inline fd_set *target_to_host_fds(fd_set *fds,
 318                                          target_long *target_fds, int n)
 319 {
 320 #if !defined(BSWAP_NEEDED) && !defined(WORDS_BIGENDIAN)
 321     return (fd_set *)target_fds;
 322 #else
 323     int i, b;
 324     if (target_fds) {
 325         FD_ZERO(fds);
 326         for(i = 0;i < n; i++) {
 327             b = (tswapl(target_fds[i / TARGET_LONG_BITS]) >>
 328                  (i & (TARGET_LONG_BITS - 1))) & 1;
 329             if (b)
 330                 FD_SET(i, fds);
 331         }
 332         return fds;
 333     } else {
 334         return NULL;
 335     }
 336 #endif
 337 }
 338
 339 static inline void host_to_target_fds(target_long *target_fds,
 340                                       fd_set *fds, int n)
 341 {
 342 #if !defined(BSWAP_NEEDED) && !defined(WORDS_BIGENDIAN)
 343     /* nothing to do */
 344 #else
 345     int i, nw, j, k;
 346     target_long v;
 347
 348     if (target_fds) {
 349         nw = n / TARGET_LONG_BITS;
 350         k = 0;
 351         for(i = 0;i < nw; i++) {
 352             v = 0;
 353             for(j = 0; j < TARGET_LONG_BITS; j++) {
 354                 v |= ((FD_ISSET(k, fds) != 0) << j);
 355                 k++;
 356             }
 357             target_fds[i] = tswapl(v);
 358         }
 359     }
 360 #endif
 361 }
 362
 363 #if defined(__alpha__)
 364 #define HOST_HZ 1024
 365 #else
 366 #define HOST_HZ 100
 367 #endif
 368
 369 static inline long host_to_target_clock_t(long ticks)
 370 {
 371 #if HOST_HZ == TARGET_HZ
 372     return ticks;
 373 #else
 374     return ((int64_t)ticks * TARGET_HZ) / HOST_HZ;
 375 #endif
 376 }
 377
 378 static inline void host_to_target_rusage(struct target_rusage *target_rusage,
 379                                          const struct rusage *rusage)
 380 {
 381     target_rusage->ru_utime.tv_sec = tswapl(rusage->ru_utime.tv_sec);
 382     target_rusage->ru_utime.tv_usec = tswapl(rusage->ru_utime.tv_usec);
 383     target_rusage->ru_stime.tv_sec = tswapl(rusage->ru_stime.tv_sec);
 384     target_rusage->ru_stime.tv_usec = tswapl(rusage->ru_stime.tv_usec);
 385     target_rusage->ru_maxrss = tswapl(rusage->ru_maxrss);
 386     target_rusage->ru_ixrss = tswapl(rusage->ru_ixrss);
 387     target_rusage->ru_idrss = tswapl(rusage->ru_idrss);
 388     target_rusage->ru_isrss = tswapl(rusage->ru_isrss);
 389     target_rusage->ru_minflt = tswapl(rusage->ru_minflt);
 390     target_rusage->ru_majflt = tswapl(rusage->ru_majflt);
 391     target_rusage->ru_nswap = tswapl(rusage->ru_nswap);
 392     target_rusage->ru_inblock = tswapl(rusage->ru_inblock);
 393     target_rusage->ru_oublock = tswapl(rusage->ru_oublock);
 394     target_rusage->ru_msgsnd = tswapl(rusage->ru_msgsnd);
 395     target_rusage->ru_msgrcv = tswapl(rusage->ru_msgrcv);
 396     target_rusage->ru_nsignals = tswapl(rusage->ru_nsignals);
 397     target_rusage->ru_nvcsw = tswapl(rusage->ru_nvcsw);
 398     target_rusage->ru_nivcsw = tswapl(rusage->ru_nivcsw);
 399 }
 400
 401 static inline void target_to_host_timeval(struct timeval *tv,
 402                                           const struct target_timeval *target_tv)
 403 {
 404     tv->tv_sec = tswapl(target_tv->tv_sec);
 405     tv->tv_usec = tswapl(target_tv->tv_usec);
 406 }
 407
 408 static inline void host_to_target_timeval(struct target_timeval *target_tv,
 409                                           const struct timeval *tv)
 410 {
 411     target_tv->tv_sec = tswapl(tv->tv_sec);
 412     target_tv->tv_usec = tswapl(tv->tv_usec);
 413 }
 414
 415
 416 static long do_select(long n,
 417                       target_long *target_rfds, target_long *target_wfds,
 418                       target_long *target_efds, struct target_timeval *target_tv)
 419 {
 420     fd_set rfds, wfds, efds;
 421     fd_set *rfds_ptr, *wfds_ptr, *efds_ptr;
 422     struct timeval tv, *tv_ptr;
 423     long ret;
 424
 425     rfds_ptr = target_to_host_fds(&rfds, target_rfds, n);
 426     wfds_ptr = target_to_host_fds(&wfds, target_wfds, n);
 427     efds_ptr = target_to_host_fds(&efds, target_efds, n);
 428
 429     if (target_tv) {
 430         target_to_host_timeval(&tv, target_tv);
 431         tv_ptr = &tv;
 432     } else {
 433         tv_ptr = NULL;
 434     }
 435     ret = get_errno(select(n, rfds_ptr, wfds_ptr, efds_ptr, tv_ptr));
 436     if (!is_error(ret)) {
 437         host_to_target_fds(target_rfds, rfds_ptr, n);
 438         host_to_target_fds(target_wfds, wfds_ptr, n);
 439         host_to_target_fds(target_efds, efds_ptr, n);
 440
 441         if (target_tv) {
 442             host_to_target_timeval(target_tv, &tv);
 443         }
 444     }
 445     return ret;
 446 }
 447
 448 static inline void target_to_host_sockaddr(struct sockaddr *addr,
 449                                            struct target_sockaddr *target_addr,
 450                                            socklen_t len)
 451 {
 452     memcpy(addr, target_addr, len);
 453     addr->sa_family = tswap16(target_addr->sa_family);
 454 }
 455
 456 static inline void host_to_target_sockaddr(struct target_sockaddr *target_addr,
 457                                            struct sockaddr *addr,
 458                                            socklen_t len)
 459 {
 460     memcpy(target_addr, addr, len);
 461     target_addr->sa_family = tswap16(addr->sa_family);
 462 }
 463
 464 static inline void target_to_host_cmsg(struct msghdr *msgh,
 465                                        struct target_msghdr *target_msgh)
 466 {
 467     struct cmsghdr *cmsg = CMSG_FIRSTHDR(msgh);
 468     struct target_cmsghdr *target_cmsg = TARGET_CMSG_FIRSTHDR(target_msgh);
 469     socklen_t space = 0;
 470
 471     while (cmsg && target_cmsg) {
 472         void *data = CMSG_DATA(cmsg);
 473         void *target_data = TARGET_CMSG_DATA(target_cmsg);
 474
 475         int len = tswapl(target_cmsg->cmsg_len)
 476                   - TARGET_CMSG_ALIGN(sizeof (struct target_cmsghdr));
 477
 478         space += CMSG_SPACE(len);
 479         if (space > msgh->msg_controllen) {
 480             space -= CMSG_SPACE(len);
 481             gemu_log("Host cmsg overflow");
 482             break;
 483         }
 484
 485         cmsg->cmsg_level = tswap32(target_cmsg->cmsg_level);
 486         cmsg->cmsg_type = tswap32(target_cmsg->cmsg_type);
 487         cmsg->cmsg_len = CMSG_LEN(len);
 488
 489         if (cmsg->cmsg_level != SOL_SOCKET || cmsg->cmsg_type != SCM_RIGHTS) {
 490             gemu_log("Unsupported ancillary data: %d/%d\n", cmsg->cmsg_level, cmsg->cmsg_type);
 491             memcpy(data, target_data, len);
 492         } else {
 493             int *fd = (int *)data;
 494             int *target_fd = (int *)target_data;
 495             int i, numfds = len / sizeof(int);
 496
 497             for (i = 0; i < numfds; i++)
 498                 fd[i] = tswap32(target_fd[i]);
 499         }
 500
 501         cmsg = CMSG_NXTHDR(msgh, cmsg);
 502         target_cmsg = TARGET_CMSG_NXTHDR(target_msgh, target_cmsg);
 503     }
 504
 505     msgh->msg_controllen = space;
 506 }
 507
 508 static inline void host_to_target_cmsg(struct target_msghdr *target_msgh,
 509                                        struct msghdr *msgh)
 510 {
 511     struct cmsghdr *cmsg = CMSG_FIRSTHDR(msgh);
 512     struct target_cmsghdr *target_cmsg = TARGET_CMSG_FIRSTHDR(target_msgh);
 513     socklen_t space = 0;
 514
 515     while (cmsg && target_cmsg) {
 516         void *data = CMSG_DATA(cmsg);
 517         void *target_data = TARGET_CMSG_DATA(target_cmsg);
 518
 519         int len = cmsg->cmsg_len - CMSG_ALIGN(sizeof (struct cmsghdr));
 520
 521         space += TARGET_CMSG_SPACE(len);
 522         if (space > tswapl(target_msgh->msg_controllen)) {
 523             space -= TARGET_CMSG_SPACE(len);
 524             gemu_log("Target cmsg overflow");
 525             break;
 526         }
 527
 528         target_cmsg->cmsg_level = tswap32(cmsg->cmsg_level);
 529         target_cmsg->cmsg_type = tswap32(cmsg->cmsg_type);
 530         target_cmsg->cmsg_len = tswapl(TARGET_CMSG_LEN(len));
 531
 532         if (cmsg->cmsg_level != SOL_SOCKET || cmsg->cmsg_type != SCM_RIGHTS) {
 533             gemu_log("Unsupported ancillary data: %d/%d\n", cmsg->cmsg_level, cmsg->cmsg_type);
 534             memcpy(target_data, data, len);
 535         } else {
 536             int *fd = (int *)data;
 537             int *target_fd = (int *)target_data;
 538             int i, numfds = len / sizeof(int);
 539
 540             for (i = 0; i < numfds; i++)
 541                 target_fd[i] = tswap32(fd[i]);
 542         }
 543
 544         cmsg = CMSG_NXTHDR(msgh, cmsg);
 545         target_cmsg = TARGET_CMSG_NXTHDR(target_msgh, target_cmsg);
 546     }
 547
 548     msgh->msg_controllen = tswapl(space);
 549 }
 550
 551 static long do_setsockopt(int sockfd, int level, int optname,
 552                           void *optval, socklen_t optlen)
 553 {
 554     if (level == SOL_TCP) {
 555         /* TCP options all take an 'int' value.  */
 556         int val;
 557
 558         if (optlen < sizeof(uint32_t))
 559             return -EINVAL;
 560
 561         val = tswap32(*(uint32_t *)optval);
 562         return get_errno(setsockopt(sockfd, level, optname, &val, sizeof(val)));
 563     }
 564
 565     else if (level != SOL_SOCKET) {
 566         gemu_log("Unsupported setsockopt level: %d\n", level);
 567         return -ENOSYS;
 568     }
 569
 570     switch (optname) {
 571     /* Options with 'int' argument.  */
 572     case SO_DEBUG:
 573     case SO_REUSEADDR:
 574     case SO_TYPE:
 575     case SO_ERROR:
 576     case SO_DONTROUTE:
 577     case SO_BROADCAST:
 578     case SO_SNDBUF:
 579     case SO_RCVBUF:
 580     case SO_KEEPALIVE:
 581     case SO_OOBINLINE:
 582     case SO_NO_CHECK:
 583     case SO_PRIORITY:
 584     case SO_BSDCOMPAT:
 585     case SO_PASSCRED:
 586     case SO_TIMESTAMP:
 587     case SO_RCVLOWAT:
 588     case SO_RCVTIMEO:
 589     case SO_SNDTIMEO:
 590     {
 591         int val;
 592         if (optlen < sizeof(uint32_t))
 593             return -EINVAL;
 594         val = tswap32(*(uint32_t *)optval);
 595         return get_errno(setsockopt(sockfd, level, optname, &val, sizeof(val)));
 596     }
 597
 598     default:
 599         gemu_log("Unsupported setsockopt SOL_SOCKET option: %d\n", optname);
 600         return -ENOSYS;
 601     }
 602 }
 603
 604 static long do_getsockopt(int sockfd, int level, int optname,
 605                           void *optval, socklen_t *optlen)
 606 {
 607     gemu_log("getsockopt not yet supported\n");
 608     return -ENOSYS;
 609 }
 610
 611 static long do_socketcall(int num, int32_t *vptr)
 612 {
 613     long ret;
 614
 615     switch(num) {
 616     case SOCKOP_socket:
 617         {
 618             int domain = tswap32(vptr[0]);
 619             int type = tswap32(vptr[1]);
 620             int protocol = tswap32(vptr[2]);
 621
 622             ret = get_errno(socket(domain, type, protocol));
 623         }
 624         break;
 625     case SOCKOP_bind:
 626         {
 627             int sockfd = tswap32(vptr[0]);
 628             void *target_addr = (void *)tswap32(vptr[1]);
 629             socklen_t addrlen = tswap32(vptr[2]);
 630             void *addr = alloca(addrlen);
 631
 632             target_to_host_sockaddr(addr, target_addr, addrlen);
 633             ret = get_errno(bind(sockfd, addr, addrlen));
 634         }
 635         break;
 636     case SOCKOP_connect:
 637         {
 638             int sockfd = tswap32(vptr[0]);
 639             void *target_addr = (void *)tswap32(vptr[1]);
 640             socklen_t addrlen = tswap32(vptr[2]);
 641             void *addr = alloca(addrlen);
 642
 643             target_to_host_sockaddr(addr, target_addr, addrlen);
 644             ret = get_errno(connect(sockfd, addr, addrlen));
 645         }
 646         break;
 647     case SOCKOP_listen:
 648         {
 649             int sockfd = tswap32(vptr[0]);
 650             int backlog = tswap32(vptr[1]);
 651
 652             ret = get_errno(listen(sockfd, backlog));
 653         }
 654         break;
 655     case SOCKOP_accept:
 656         {
 657             int sockfd = tswap32(vptr[0]);
 658             void *target_addr = (void *)tswap32(vptr[1]);
 659             uint32_t *target_addrlen = (void *)tswap32(vptr[2]);
 660             socklen_t addrlen = tswap32(*target_addrlen);
 661             void *addr = alloca(addrlen);
 662
 663             ret = get_errno(accept(sockfd, addr, &addrlen));
 664             if (!is_error(ret)) {
 665                 host_to_target_sockaddr(target_addr, addr, addrlen);
 666                 *target_addrlen = tswap32(addrlen);
 667             }
 668         }
 669         break;
 670     case SOCKOP_getsockname:
 671         {
 672             int sockfd = tswap32(vptr[0]);
 673             void *target_addr = (void *)tswap32(vptr[1]);
 674             uint32_t *target_addrlen = (void *)tswap32(vptr[2]);
 675             socklen_t addrlen = tswap32(*target_addrlen);
 676             void *addr = alloca(addrlen);
 677
 678             ret = get_errno(getsockname(sockfd, addr, &addrlen));
 679             if (!is_error(ret)) {
 680                 host_to_target_sockaddr(target_addr, addr, addrlen);
 681                 *target_addrlen = tswap32(addrlen);
 682             }
 683         }
 684         break;
 685     case SOCKOP_getpeername:
 686         {
 687             int sockfd = tswap32(vptr[0]);
 688             void *target_addr = (void *)tswap32(vptr[1]);
 689             uint32_t *target_addrlen = (void *)tswap32(vptr[2]);
 690             socklen_t addrlen = tswap32(*target_addrlen);
 691             void *addr = alloca(addrlen);
 692
 693             ret = get_errno(getpeername(sockfd, addr, &addrlen));
 694             if (!is_error(ret)) {
 695                 host_to_target_sockaddr(target_addr, addr, addrlen);
 696                 *target_addrlen = tswap32(addrlen);
 697             }
 698         }
 699         break;
 700     case SOCKOP_socketpair:
 701         {
 702             int domain = tswap32(vptr[0]);
 703             int type = tswap32(vptr[1]);
 704             int protocol = tswap32(vptr[2]);
 705             int32_t *target_tab = (void *)tswap32(vptr[3]);
 706             int tab[2];
 707
 708             ret = get_errno(socketpair(domain, type, protocol, tab));
 709             if (!is_error(ret)) {
 710                 target_tab[0] = tswap32(tab[0]);
 711                 target_tab[1] = tswap32(tab[1]);
 712             }
 713         }
 714         break;
 715     case SOCKOP_send:
 716         {
 717             int sockfd = tswap32(vptr[0]);
 718             void *msg = (void *)tswap32(vptr[1]);
 719             size_t len = tswap32(vptr[2]);
 720             int flags = tswap32(vptr[3]);
 721
 722             ret = get_errno(send(sockfd, msg, len, flags));
 723         }
 724         break;
 725     case SOCKOP_recv:
 726         {
 727             int sockfd = tswap32(vptr[0]);
 728             void *msg = (void *)tswap32(vptr[1]);
 729             size_t len = tswap32(vptr[2]);
 730             int flags = tswap32(vptr[3]);
 731
 732             ret = get_errno(recv(sockfd, msg, len, flags));
 733         }
 734         break;
 735     case SOCKOP_sendto:
 736         {
 737             int sockfd = tswap32(vptr[0]);
 738             void *msg = (void *)tswap32(vptr[1]);
 739             size_t len = tswap32(vptr[2]);
 740             int flags = tswap32(vptr[3]);
 741             void *target_addr = (void *)tswap32(vptr[4]);
 742             socklen_t addrlen = tswap32(vptr[5]);
 743             void *addr = alloca(addrlen);
 744
 745             target_to_host_sockaddr(addr, target_addr, addrlen);
 746             ret = get_errno(sendto(sockfd, msg, len, flags, addr, addrlen));
 747         }
 748         break;
 749     case SOCKOP_recvfrom:
 750         {
 751             int sockfd = tswap32(vptr[0]);
 752             void *msg = (void *)tswap32(vptr[1]);
 753             size_t len = tswap32(vptr[2]);
 754             int flags = tswap32(vptr[3]);
 755             void *target_addr = (void *)tswap32(vptr[4]);
 756             uint32_t *target_addrlen = (void *)tswap32(vptr[5]);
 757             socklen_t addrlen = tswap32(*target_addrlen);
 758             void *addr = alloca(addrlen);
 759
 760             ret = get_errno(recvfrom(sockfd, msg, len, flags, addr, &addrlen));
 761             if (!is_error(ret)) {
 762                 host_to_target_sockaddr(target_addr, addr, addrlen);
 763                 *target_addrlen = tswap32(addrlen);
 764             }
 765         }
 766         break;
 767     case SOCKOP_shutdown:
 768         {
 769             int sockfd = tswap32(vptr[0]);
 770             int how = tswap32(vptr[1]);
 771
 772             ret = get_errno(shutdown(sockfd, how));
 773         }
 774         break;
 775     case SOCKOP_sendmsg:
 776     case SOCKOP_recvmsg:
 777         {
 778             int fd;
 779             struct target_msghdr *msgp;
 780             struct msghdr msg;
 781             int flags, count, i;
 782             struct iovec *vec;
 783             struct target_iovec *target_vec;
 784
 785             msgp = (void *)tswap32(vptr[1]);
 786             msg.msg_name = (void *)tswapl(msgp->msg_name);
 787             msg.msg_namelen = tswapl(msgp->msg_namelen);
 788             msg.msg_controllen = 2 * tswapl(msgp->msg_controllen);
 789             msg.msg_control = alloca(msg.msg_controllen);
 790             msg.msg_flags = tswap32(msgp->msg_flags);
 791
 792             count = tswapl(msgp->msg_iovlen);
 793             vec = alloca(count * sizeof(struct iovec));
 794             target_vec = (void *)tswapl(msgp->msg_iov);
 795             for(i = 0;i < count; i++) {
 796                 vec[i].iov_base = (void *)tswapl(target_vec[i].iov_base);
 797                 vec[i].iov_len = tswapl(target_vec[i].iov_len);
 798             }
 799             msg.msg_iovlen = count;
 800             msg.msg_iov = vec;
 801
 802             fd = tswap32(vptr[0]);
 803             flags = tswap32(vptr[2]);
 804             if (num == SOCKOP_sendmsg) {
 805                 target_to_host_cmsg(&msg, msgp);
 806                 ret = get_errno(sendmsg(fd, &msg, flags));
 807             } else {
 808                 ret = get_errno(recvmsg(fd, &msg, flags));
 809                 if (!is_error(ret))
 810                   host_to_target_cmsg(msgp, &msg);
 811             }
 812         }
 813         break;
 814     case SOCKOP_setsockopt:
 815         {
 816             int sockfd = tswap32(vptr[0]);
 817             int level = tswap32(vptr[1]);
 818             int optname = tswap32(vptr[2]);
 819             void *optval = (void *)tswap32(vptr[3]);
 820             socklen_t optlen = tswap32(vptr[4]);
 821
 822             ret = do_setsockopt(sockfd, level, optname, optval, optlen);
 823         }
 824         break;
 825     case SOCKOP_getsockopt:
 826         {
 827             int sockfd = tswap32(vptr[0]);
 828             int level = tswap32(vptr[1]);
 829             int optname = tswap32(vptr[2]);
 830             void *optval = (void *)tswap32(vptr[3]);
 831             uint32_t *target_len = (void *)tswap32(vptr[4]);
 832             socklen_t optlen = tswap32(*target_len);
 833
 834             ret = do_getsockopt(sockfd, level, optname, optval, &optlen);
 835             if (!is_error(ret))
 836                 *target_len = tswap32(optlen);
 837         }
 838         break;
 839     default:
 840         gemu_log("Unsupported socketcall: %d\n", num);
 841         ret = -ENOSYS;
 842         break;
 843     }
 844     return ret;
 845 }
 846
 847 /* kernel structure types definitions */
 848 #define IFNAMSIZ        16
 849
 850 #define STRUCT(name, list...) STRUCT_ ## name,
 851 #define STRUCT_SPECIAL(name) STRUCT_ ## name,
 852 enum {
 853 #include "syscall_types.h"
 854 };
 855 #undef STRUCT
 856 #undef STRUCT_SPECIAL
 857
 858 #define STRUCT(name, list...) const argtype struct_ ## name ## _def[] = { list, TYPE_NULL };
 859 #define STRUCT_SPECIAL(name)
 860 #include "syscall_types.h"
 861 #undef STRUCT
 862 #undef STRUCT_SPECIAL
 863
 864 typedef struct IOCTLEntry {
 865     unsigned int target_cmd;
 866     unsigned int host_cmd;
 867     const char *name;
 868     int access;
 869     const argtype arg_type[5];
 870 } IOCTLEntry;
 871
 872 #define IOC_R 0x0001
 873 #define IOC_W 0x0002
 874 #define IOC_RW (IOC_R | IOC_W)
 875
 876 #define MAX_STRUCT_SIZE 4096
 877
 878 IOCTLEntry ioctl_entries[] = {
 879 #define IOCTL(cmd, access, types...) \
 880     { TARGET_ ## cmd, cmd, #cmd, access, { types } },
 881 #include "ioctls.h"
 882     { 0, 0, },
 883 };
 884
 885 static long do_ioctl(long fd, long cmd, long arg)
 886 {
 887     const IOCTLEntry *ie;
 888     const argtype *arg_type;
 889     long ret;
 890     uint8_t buf_temp[MAX_STRUCT_SIZE];
 891
 892     ie = ioctl_entries;
 893     for(;;) {
 894         if (ie->target_cmd == 0) {
 895             gemu_log("Unsupported ioctl: cmd=0x%04lx\n", cmd);
 896             return -ENOSYS;
 897         }
 898         if (ie->target_cmd == cmd)
 899             break;
 900         ie++;
 901     }
 902     arg_type = ie->arg_type;
 903 #if defined(DEBUG)
 904     gemu_log("ioctl: cmd=0x%04lx (%s)\n", cmd, ie->name);
 905 #endif
 906     switch(arg_type[0]) {
 907     case TYPE_NULL:
 908         /* no argument */
 909         ret = get_errno(ioctl(fd, ie->host_cmd));
 910         break;
 911     case TYPE_PTRVOID:
 912     case TYPE_INT:
 913         /* int argment */
 914         ret = get_errno(ioctl(fd, ie->host_cmd, arg));
 915         break;
 916     case TYPE_PTR:
 917         arg_type++;
 918         switch(ie->access) {
 919         case IOC_R:
 920             ret = get_errno(ioctl(fd, ie->host_cmd, buf_temp));
 921             if (!is_error(ret)) {
 922                 thunk_convert((void *)arg, buf_temp, arg_type, THUNK_TARGET);
 923             }
 924             break;
 925         case IOC_W:
 926             thunk_convert(buf_temp, (void *)arg, arg_type, THUNK_HOST);
 927             ret = get_errno(ioctl(fd, ie->host_cmd, buf_temp));
 928             break;
 929         default:
 930         case IOC_RW:
 931             thunk_convert(buf_temp, (void *)arg, arg_type, THUNK_HOST);
 932             ret = get_errno(ioctl(fd, ie->host_cmd, buf_temp));
 933             if (!is_error(ret)) {
 934                 thunk_convert((void *)arg, buf_temp, arg_type, THUNK_TARGET);
 935             }
 936             break;
 937         }
 938         break;
 939     default:
 940         gemu_log("Unsupported ioctl type: cmd=0x%04lx type=%d\n", cmd, arg_type[0]);
 941         ret = -ENOSYS;
 942         break;
 943     }
 944     return ret;
 945 }
 946
 947 bitmask_transtbl iflag_tbl[] = {
 948         { TARGET_IGNBRK, TARGET_IGNBRK, IGNBRK, IGNBRK },
 949         { TARGET_BRKINT, TARGET_BRKINT, BRKINT, BRKINT },
 950         { TARGET_IGNPAR, TARGET_IGNPAR, IGNPAR, IGNPAR },
 951         { TARGET_PARMRK, TARGET_PARMRK, PARMRK, PARMRK },
 952         { TARGET_INPCK, TARGET_INPCK, INPCK, INPCK },
 953         { TARGET_ISTRIP, TARGET_ISTRIP, ISTRIP, ISTRIP },
 954         { TARGET_INLCR, TARGET_INLCR, INLCR, INLCR },
 955         { TARGET_IGNCR, TARGET_IGNCR, IGNCR, IGNCR },
 956         { TARGET_ICRNL, TARGET_ICRNL, ICRNL, ICRNL },
 957         { TARGET_IUCLC, TARGET_IUCLC, IUCLC, IUCLC },
 958         { TARGET_IXON, TARGET_IXON, IXON, IXON },
 959         { TARGET_IXANY, TARGET_IXANY, IXANY, IXANY },
 960         { TARGET_IXOFF, TARGET_IXOFF, IXOFF, IXOFF },
 961         { TARGET_IMAXBEL, TARGET_IMAXBEL, IMAXBEL, IMAXBEL },
 962         { 0, 0, 0, 0 }
 963 };
 964
 965 bitmask_transtbl oflag_tbl[] = {
 966         { TARGET_OPOST, TARGET_OPOST, OPOST, OPOST },
 967         { TARGET_OLCUC, TARGET_OLCUC, OLCUC, OLCUC },
 968         { TARGET_ONLCR, TARGET_ONLCR, ONLCR, ONLCR },
 969         { TARGET_OCRNL, TARGET_OCRNL, OCRNL, OCRNL },
 970         { TARGET_ONOCR, TARGET_ONOCR, ONOCR, ONOCR },
 971         { TARGET_ONLRET, TARGET_ONLRET, ONLRET, ONLRET },
 972         { TARGET_OFILL, TARGET_OFILL, OFILL, OFILL },
 973         { TARGET_OFDEL, TARGET_OFDEL, OFDEL, OFDEL },
 974         { TARGET_NLDLY, TARGET_NL0, NLDLY, NL0 },
 975         { TARGET_NLDLY, TARGET_NL1, NLDLY, NL1 },
 976         { TARGET_CRDLY, TARGET_CR0, CRDLY, CR0 },
 977         { TARGET_CRDLY, TARGET_CR1, CRDLY, CR1 },
 978         { TARGET_CRDLY, TARGET_CR2, CRDLY, CR2 },
 979         { TARGET_CRDLY, TARGET_CR3, CRDLY, CR3 },
 980         { TARGET_TABDLY, TARGET_TAB0, TABDLY, TAB0 },
 981         { TARGET_TABDLY, TARGET_TAB1, TABDLY, TAB1 },
 982         { TARGET_TABDLY, TARGET_TAB2, TABDLY, TAB2 },
 983         { TARGET_TABDLY, TARGET_TAB3, TABDLY, TAB3 },
 984         { TARGET_BSDLY, TARGET_BS0, BSDLY, BS0 },
 985         { TARGET_BSDLY, TARGET_BS1, BSDLY, BS1 },
 986         { TARGET_VTDLY, TARGET_VT0, VTDLY, VT0 },
 987         { TARGET_VTDLY, TARGET_VT1, VTDLY, VT1 },
 988         { TARGET_FFDLY, TARGET_FF0, FFDLY, FF0 },
 989         { TARGET_FFDLY, TARGET_FF1, FFDLY, FF1 },
 990         { 0, 0, 0, 0 }
 991 };
 992
 993 bitmask_transtbl cflag_tbl[] = {
 994         { TARGET_CBAUD, TARGET_B0, CBAUD, B0 },
 995         { TARGET_CBAUD, TARGET_B50, CBAUD, B50 },
 996         { TARGET_CBAUD, TARGET_B75, CBAUD, B75 },
 997         { TARGET_CBAUD, TARGET_B110, CBAUD, B110 },
 998         { TARGET_CBAUD, TARGET_B134, CBAUD, B134 },
 999         { TARGET_CBAUD, TARGET_B150, CBAUD, B150 },
1000         { TARGET_CBAUD, TARGET_B200, CBAUD, B200 },
1001         { TARGET_CBAUD, TARGET_B300, CBAUD, B300 },
1002         { TARGET_CBAUD, TARGET_B600, CBAUD, B600 },
1003         { TARGET_CBAUD, TARGET_B1200, CBAUD, B1200 },
1004         { TARGET_CBAUD, TARGET_B1800, CBAUD, B1800 },
1005         { TARGET_CBAUD, TARGET_B2400, CBAUD, B2400 },
1006         { TARGET_CBAUD, TARGET_B4800, CBAUD, B4800 },
1007         { TARGET_CBAUD, TARGET_B9600, CBAUD, B9600 },
1008         { TARGET_CBAUD, TARGET_B19200, CBAUD, B19200 },
1009         { TARGET_CBAUD, TARGET_B38400, CBAUD, B38400 },
1010         { TARGET_CBAUD, TARGET_B57600, CBAUD, B57600 },
1011         { TARGET_CBAUD, TARGET_B115200, CBAUD, B115200 },
1012         { TARGET_CBAUD, TARGET_B230400, CBAUD, B230400 },
1013         { TARGET_CBAUD, TARGET_B460800, CBAUD, B460800 },
1014         { TARGET_CSIZE, TARGET_CS5, CSIZE, CS5 },
1015         { TARGET_CSIZE, TARGET_CS6, CSIZE, CS6 },
1016         { TARGET_CSIZE, TARGET_CS7, CSIZE, CS7 },
1017         { TARGET_CSIZE, TARGET_CS8, CSIZE, CS8 },
1018         { TARGET_CSTOPB, TARGET_CSTOPB, CSTOPB, CSTOPB },
1019         { TARGET_CREAD, TARGET_CREAD, CREAD, CREAD },
1020         { TARGET_PARENB, TARGET_PARENB, PARENB, PARENB },
1021         { TARGET_PARODD, TARGET_PARODD, PARODD, PARODD },
1022         { TARGET_HUPCL, TARGET_HUPCL, HUPCL, HUPCL },
1023         { TARGET_CLOCAL, TARGET_CLOCAL, CLOCAL, CLOCAL },
1024         { TARGET_CRTSCTS, TARGET_CRTSCTS, CRTSCTS, CRTSCTS },
1025         { 0, 0, 0, 0 }
1026 };
1027
1028 bitmask_transtbl lflag_tbl[] = {
1029         { TARGET_ISIG, TARGET_ISIG, ISIG, ISIG },
1030         { TARGET_ICANON, TARGET_ICANON, ICANON, ICANON },
1031         { TARGET_XCASE, TARGET_XCASE, XCASE, XCASE },
1032         { TARGET_ECHO, TARGET_ECHO, ECHO, ECHO },
1033         { TARGET_ECHOE, TARGET_ECHOE, ECHOE, ECHOE },
1034         { TARGET_ECHOK, TARGET_ECHOK, ECHOK, ECHOK },
1035         { TARGET_ECHONL, TARGET_ECHONL, ECHONL, ECHONL },
1036         { TARGET_NOFLSH, TARGET_NOFLSH, NOFLSH, NOFLSH },
1037         { TARGET_TOSTOP, TARGET_TOSTOP, TOSTOP, TOSTOP },
1038         { TARGET_ECHOCTL, TARGET_ECHOCTL, ECHOCTL, ECHOCTL },
1039         { TARGET_ECHOPRT, TARGET_ECHOPRT, ECHOPRT, ECHOPRT },
1040         { TARGET_ECHOKE, TARGET_ECHOKE, ECHOKE, ECHOKE },
1041         { TARGET_FLUSHO, TARGET_FLUSHO, FLUSHO, FLUSHO },
1042         { TARGET_PENDIN, TARGET_PENDIN, PENDIN, PENDIN },
1043         { TARGET_IEXTEN, TARGET_IEXTEN, IEXTEN, IEXTEN },
1044         { 0, 0, 0, 0 }
1045 };
1046
1047 static void target_to_host_termios (void *dst, const void *src)
1048 {
1049     struct host_termios *host = dst;
1050     const struct target_termios *target = src;
1051
1052     host->c_iflag =
1053         target_to_host_bitmask(tswap32(target->c_iflag), iflag_tbl);
1054     host->c_oflag =
1055         target_to_host_bitmask(tswap32(target->c_oflag), oflag_tbl);
1056     host->c_cflag =
1057         target_to_host_bitmask(tswap32(target->c_cflag), cflag_tbl);
1058     host->c_lflag =
1059         target_to_host_bitmask(tswap32(target->c_lflag), lflag_tbl);
1060     host->c_line = target->c_line;
1061
1062     host->c_cc[VINTR] = target->c_cc[TARGET_VINTR];
1063     host->c_cc[VQUIT] = target->c_cc[TARGET_VQUIT];
1064     host->c_cc[VERASE] = target->c_cc[TARGET_VERASE];
1065     host->c_cc[VKILL] = target->c_cc[TARGET_VKILL];
1066     host->c_cc[VEOF] = target->c_cc[TARGET_VEOF];
1067     host->c_cc[VTIME] = target->c_cc[TARGET_VTIME];
1068     host->c_cc[VMIN] = target->c_cc[TARGET_VMIN];
1069     host->c_cc[VSWTC] = target->c_cc[TARGET_VSWTC];
1070     host->c_cc[VSTART] = target->c_cc[TARGET_VSTART];
1071     host->c_cc[VSTOP] = target->c_cc[TARGET_VSTOP];
1072     host->c_cc[VSUSP] = target->c_cc[TARGET_VSUSP];
1073     host->c_cc[VEOL] = target->c_cc[TARGET_VEOL];
1074     host->c_cc[VREPRINT] = target->c_cc[TARGET_VREPRINT];
1075     host->c_cc[VDISCARD] = target->c_cc[TARGET_VDISCARD];
1076     host->c_cc[VWERASE] = target->c_cc[TARGET_VWERASE];
1077     host->c_cc[VLNEXT] = target->c_cc[TARGET_VLNEXT];
1078     host->c_cc[VEOL2] = target->c_cc[TARGET_VEOL2];
1079 }
1080
1081 static void host_to_target_termios (void *dst, const void *src)
1082 {
1083     struct target_termios *target = dst;
1084     const struct host_termios *host = src;
1085
1086     target->c_iflag =
1087         tswap32(host_to_target_bitmask(host->c_iflag, iflag_tbl));
1088     target->c_oflag =
1089         tswap32(host_to_target_bitmask(host->c_oflag, oflag_tbl));
1090     target->c_cflag =
1091         tswap32(host_to_target_bitmask(host->c_cflag, cflag_tbl));
1092     target->c_lflag =
1093         tswap32(host_to_target_bitmask(host->c_lflag, lflag_tbl));
1094     target->c_line = host->c_line;
1095
1096     target->c_cc[TARGET_VINTR] = host->c_cc[VINTR];
1097     target->c_cc[TARGET_VQUIT] = host->c_cc[VQUIT];
1098     target->c_cc[TARGET_VERASE] = host->c_cc[VERASE];
1099     target->c_cc[TARGET_VKILL] = host->c_cc[VKILL];
1100     target->c_cc[TARGET_VEOF] = host->c_cc[VEOF];
1101     target->c_cc[TARGET_VTIME] = host->c_cc[VTIME];
1102     target->c_cc[TARGET_VMIN] = host->c_cc[VMIN];
1103     target->c_cc[TARGET_VSWTC] = host->c_cc[VSWTC];
1104     target->c_cc[TARGET_VSTART] = host->c_cc[VSTART];
1105     target->c_cc[TARGET_VSTOP] = host->c_cc[VSTOP];
1106     target->c_cc[TARGET_VSUSP] = host->c_cc[VSUSP];
1107     target->c_cc[TARGET_VEOL] = host->c_cc[VEOL];
1108     target->c_cc[TARGET_VREPRINT] = host->c_cc[VREPRINT];
1109     target->c_cc[TARGET_VDISCARD] = host->c_cc[VDISCARD];
1110     target->c_cc[TARGET_VWERASE] = host->c_cc[VWERASE];
1111     target->c_cc[TARGET_VLNEXT] = host->c_cc[VLNEXT];
1112     target->c_cc[TARGET_VEOL2] = host->c_cc[VEOL2];
1113 }
1114
1115 StructEntry struct_termios_def = {
1116     .convert = { host_to_target_termios, target_to_host_termios },
1117     .size = { sizeof(struct target_termios), sizeof(struct host_termios) },
1118     .align = { __alignof__(struct target_termios), __alignof__(struct host_termios) },
1119 };
1120
1121 static bitmask_transtbl mmap_flags_tbl[] = {
1122         { TARGET_MAP_SHARED, TARGET_MAP_SHARED, MAP_SHARED, MAP_SHARED },
1123         { TARGET_MAP_PRIVATE, TARGET_MAP_PRIVATE, MAP_PRIVATE, MAP_PRIVATE },
1124         { TARGET_MAP_FIXED, TARGET_MAP_FIXED, MAP_FIXED, MAP_FIXED },
1125         { TARGET_MAP_ANONYMOUS, TARGET_MAP_ANONYMOUS, MAP_ANONYMOUS, MAP_ANONYMOUS },
1126         { TARGET_MAP_GROWSDOWN, TARGET_MAP_GROWSDOWN, MAP_GROWSDOWN, MAP_GROWSDOWN },
1127         { TARGET_MAP_DENYWRITE, TARGET_MAP_DENYWRITE, MAP_DENYWRITE, MAP_DENYWRITE },
1128         { TARGET_MAP_EXECUTABLE, TARGET_MAP_EXECUTABLE, MAP_EXECUTABLE, MAP_EXECUTABLE },
1129         { TARGET_MAP_LOCKED, TARGET_MAP_LOCKED, MAP_LOCKED, MAP_LOCKED },
1130         { 0, 0, 0, 0 }
1131 };
1132
1133 static bitmask_transtbl fcntl_flags_tbl[] = {
1134         { TARGET_O_ACCMODE,   TARGET_O_WRONLY,    O_ACCMODE,   O_WRONLY,    },
1135         { TARGET_O_ACCMODE,   TARGET_O_RDWR,      O_ACCMODE,   O_RDWR,      },
1136         { TARGET_O_CREAT,     TARGET_O_CREAT,     O_CREAT,     O_CREAT,     },
1137         { TARGET_O_EXCL,      TARGET_O_EXCL,      O_EXCL,      O_EXCL,      },
1138         { TARGET_O_NOCTTY,    TARGET_O_NOCTTY,    O_NOCTTY,    O_NOCTTY,    },
1139         { TARGET_O_TRUNC,     TARGET_O_TRUNC,     O_TRUNC,     O_TRUNC,     },
1140         { TARGET_O_APPEND,    TARGET_O_APPEND,    O_APPEND,    O_APPEND,    },
1141         { TARGET_O_NONBLOCK,  TARGET_O_NONBLOCK,  O_NONBLOCK,  O_NONBLOCK,  },
1142         { TARGET_O_SYNC,      TARGET_O_SYNC,      O_SYNC,      O_SYNC,      },
1143         { TARGET_FASYNC,      TARGET_FASYNC,      FASYNC,      FASYNC,      },
1144         { TARGET_O_DIRECTORY, TARGET_O_DIRECTORY, O_DIRECTORY, O_DIRECTORY, },
1145         { TARGET_O_NOFOLLOW,  TARGET_O_NOFOLLOW,  O_NOFOLLOW,  O_NOFOLLOW,  },
1146         { TARGET_O_LARGEFILE, TARGET_O_LARGEFILE, O_LARGEFILE, O_LARGEFILE, },
1147 #if defined(O_DIRECT)
1148         { TARGET_O_DIRECT,    TARGET_O_DIRECT,    O_DIRECT,    O_DIRECT,    },
1149 #endif
1150         { 0, 0, 0, 0 }
1151 };
1152
1153 #if defined(TARGET_I386)
1154
1155 /* NOTE: there is really one LDT for all the threads */
1156 uint8_t *ldt_table;
1157
1158 static int read_ldt(void *ptr, unsigned long bytecount)
1159 {
1160     int size;
1161
1162     if (!ldt_table)
1163         return 0;
1164     size = TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE;
1165     if (size > bytecount)
1166         size = bytecount;
1167     memcpy(ptr, ldt_table, size);
1168     return size;
1169 }
1170
1171 /* XXX: add locking support */
1172 static int write_ldt(CPUX86State *env,
1173                      void *ptr, unsigned long bytecount, int oldmode)
1174 {
1175     struct target_modify_ldt_ldt_s ldt_info;
1176     int seg_32bit, contents, read_exec_only, limit_in_pages;
1177     int seg_not_present, useable;
1178     uint32_t *lp, entry_1, entry_2;
1179
1180     if (bytecount != sizeof(ldt_info))
1181         return -EINVAL;
1182     memcpy(&ldt_info, ptr, sizeof(ldt_info));
1183     tswap32s(&ldt_info.entry_number);
1184     tswapls((long *)&ldt_info.base_addr);
1185     tswap32s(&ldt_info.limit);
1186     tswap32s(&ldt_info.flags);
1187
1188     if (ldt_info.entry_number >= TARGET_LDT_ENTRIES)
1189         return -EINVAL;
1190     seg_32bit = ldt_info.flags & 1;
1191     contents = (ldt_info.flags >> 1) & 3;
1192     read_exec_only = (ldt_info.flags >> 3) & 1;
1193     limit_in_pages = (ldt_info.flags >> 4) & 1;
1194     seg_not_present = (ldt_info.flags >> 5) & 1;
1195     useable = (ldt_info.flags >> 6) & 1;
1196
1197     if (contents == 3) {
1198         if (oldmode)
1199             return -EINVAL;
1200         if (seg_not_present == 0)
1201             return -EINVAL;
1202     }
1203     /* allocate the LDT */
1204     if (!ldt_table) {
1205         ldt_table = malloc(TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE);
1206         if (!ldt_table)
1207             return -ENOMEM;
1208         memset(ldt_table, 0, TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE);
1209         env->ldt.base = ldt_table;
1210         env->ldt.limit = 0xffff;
1211     }
1212
1213     /* NOTE: same code as Linux kernel */
1214     /* Allow LDTs to be cleared by the user. */
1215     if (ldt_info.base_addr == 0 && ldt_info.limit == 0) {
1216         if (oldmode ||
1217             (contents == 0              &&
1218              read_exec_only == 1        &&
1219              seg_32bit == 0             &&
1220              limit_in_pages == 0        &&
1221              seg_not_present == 1       &&
1222              useable == 0 )) {
1223             entry_1 = 0;
1224             entry_2 = 0;
1225             goto install;
1226         }
1227     }
1228
1229     entry_1 = ((ldt_info.base_addr & 0x0000ffff) << 16) |
1230         (ldt_info.limit & 0x0ffff);
1231     entry_2 = (ldt_info.base_addr & 0xff000000) |
1232         ((ldt_info.base_addr & 0x00ff0000) >> 16) |
1233         (ldt_info.limit & 0xf0000) |
1234         ((read_exec_only ^ 1) << 9) |
1235         (contents << 10) |
1236         ((seg_not_present ^ 1) << 15) |
1237         (seg_32bit << 22) |
1238         (limit_in_pages << 23) |
1239         0x7000;
1240     if (!oldmode)
1241         entry_2 |= (useable << 20);
1242
1243     /* Install the new entry ...  */
1244 install:
1245     lp = (uint32_t *)(ldt_table + (ldt_info.entry_number << 3));
1246     lp[0] = tswap32(entry_1);
1247     lp[1] = tswap32(entry_2);
1248     return 0;
1249 }
1250
1251 /* specific and weird i386 syscalls */
1252 int do_modify_ldt(CPUX86State *env, int func, void *ptr, unsigned long bytecount)
1253 {
1254     int ret = -ENOSYS;
1255
1256     switch (func) {
1257     case 0:
1258         ret = read_ldt(ptr, bytecount);
1259         break;
1260     case 1:
1261         ret = write_ldt(env, ptr, bytecount, 1);
1262         break;
1263     case 0x11:
1264         ret = write_ldt(env, ptr, bytecount, 0);
1265         break;
1266     }
1267     return ret;
1268 }
1269
1270 #endif /* defined(TARGET_I386) */
1271
1272 /* this stack is the equivalent of the kernel stack associated with a
1273    thread/process */
1274 #define NEW_STACK_SIZE 8192
1275
1276 static int clone_func(void *arg)
1277 {
1278     CPUState *env = arg;
1279     cpu_loop(env);
1280     /* never exits */
1281     return 0;
1282 }
1283
1284 int do_fork(CPUState *env, unsigned int flags, unsigned long newsp)
1285 {
1286     int ret;
1287     TaskState *ts;
1288     uint8_t *new_stack;
1289     CPUState *new_env;
1290
1291     if (flags & CLONE_VM) {
1292         ts = malloc(sizeof(TaskState) + NEW_STACK_SIZE);
1293         memset(ts, 0, sizeof(TaskState));
1294         new_stack = ts->stack;
1295         ts->used = 1;
1296         /* add in task state list */
1297         ts->next = first_task_state;
1298         first_task_state = ts;
1299         /* we create a new CPU instance. */
1300         new_env = cpu_init();
1301         memcpy(new_env, env, sizeof(CPUState));
1302 #if defined(TARGET_I386)
1303         if (!newsp)
1304             newsp = env->regs[R_ESP];
1305         new_env->regs[R_ESP] = newsp;
1306         new_env->regs[R_EAX] = 0;
1307 #elif defined(TARGET_ARM)
1308         if (!newsp)
1309             newsp = env->regs[13];
1310         new_env->regs[13] = newsp;
1311         new_env->regs[0] = 0;
1312 #elif defined(TARGET_SPARC)
1313         printf ("HELPME: %s:%d\n", __FILE__, __LINE__);
1314 #elif defined(TARGET_PPC)
1315         if (!newsp)
1316             newsp = env->gpr[1];
1317         new_env->gpr[1] = newsp;
1318         {
1319             int i;
1320             for (i = 7; i < 32; i++)
1321                 new_env->gpr[i] = 0;
1322         }
1323 #else
1324 #error unsupported target CPU
1325 #endif
1326         new_env->opaque = ts;
1327 #ifdef __ia64__
1328         ret = clone2(clone_func, new_stack + NEW_STACK_SIZE, flags, new_env);
1329 #else
1330         ret = clone(clone_func, new_stack + NEW_STACK_SIZE, flags, new_env);
1331 #endif
1332     } else {
1333         /* if no CLONE_VM, we consider it is a fork */
1334         if ((flags & ~CSIGNAL) != 0)
1335             return -EINVAL;
1336         ret = fork();
1337     }
1338     return ret;
1339 }
1340
1341 static long do_fcntl(int fd, int cmd, unsigned long arg)
1342 {
1343     struct flock fl;
1344     struct target_flock *target_fl = (void *)arg;
1345     long ret;
1346
1347     switch(cmd) {
1348     case TARGET_F_GETLK:
1349         ret = fcntl(fd, cmd, &fl);
1350         if (ret == 0) {
1351             target_fl->l_type = tswap16(fl.l_type);
1352             target_fl->l_whence = tswap16(fl.l_whence);
1353             target_fl->l_start = tswapl(fl.l_start);
1354             target_fl->l_len = tswapl(fl.l_len);
1355             target_fl->l_pid = tswapl(fl.l_pid);
1356         }
1357         break;
1358
1359     case TARGET_F_SETLK:
1360     case TARGET_F_SETLKW:
1361         fl.l_type = tswap16(target_fl->l_type);
1362         fl.l_whence = tswap16(target_fl->l_whence);
1363         fl.l_start = tswapl(target_fl->l_start);
1364         fl.l_len = tswapl(target_fl->l_len);
1365         fl.l_pid = tswapl(target_fl->l_pid);
1366         ret = fcntl(fd, cmd, &fl);
1367         break;
1368
1369     case TARGET_F_GETLK64:
1370     case TARGET_F_SETLK64:
1371     case TARGET_F_SETLKW64:
1372         ret = -1;
1373         errno = EINVAL;
1374         break;
1375
1376     case F_GETFL:
1377         ret = fcntl(fd, cmd, arg);
1378         ret = host_to_target_bitmask(ret, fcntl_flags_tbl);
1379         break;
1380
1381     case F_SETFL:
1382         ret = fcntl(fd, cmd, target_to_host_bitmask(arg, fcntl_flags_tbl));
1383         break;
1384
1385     default:
1386         ret = fcntl(fd, cmd, arg);
1387         break;
1388     }
1389     return ret;
1390 }
1391
1392 #ifdef USE_UID16
1393
1394 static inline int high2lowuid(int uid)
1395 {
1396     if (uid > 65535)
1397         return 65534;
1398     else
1399         return uid;
1400 }
1401
1402 static inline int high2lowgid(int gid)
1403 {
1404     if (gid > 65535)
1405         return 65534;
1406     else
1407         return gid;
1408 }
1409
1410 static inline int low2highuid(int uid)
1411 {
1412     if ((int16_t)uid == -1)
1413         return -1;
1414     else
1415         return uid;
1416 }
1417
1418 static inline int low2highgid(int gid)
1419 {
1420     if ((int16_t)gid == -1)
1421         return -1;
1422     else
1423         return gid;
1424 }
1425
1426 #endif /* USE_UID16 */
1427
1428 void syscall_init(void)
1429 {
1430     IOCTLEntry *ie;
1431     const argtype *arg_type;
1432     int size;
1433
1434 #define STRUCT(name, list...) thunk_register_struct(STRUCT_ ## name, #name, struct_ ## name ## _def);
1435 #define STRUCT_SPECIAL(name) thunk_register_struct_direct(STRUCT_ ## name, #name, &struct_ ## name ## _def);
1436 #include "syscall_types.h"
1437 #undef STRUCT
1438 #undef STRUCT_SPECIAL
1439
1440     /* we patch the ioctl size if necessary. We rely on the fact that
1441        no ioctl has all the bits at '1' in the size field */
1442     ie = ioctl_entries;
1443     while (ie->target_cmd != 0) {
1444         if (((ie->target_cmd >> TARGET_IOC_SIZESHIFT) & TARGET_IOC_SIZEMASK) ==
1445             TARGET_IOC_SIZEMASK) {
1446             arg_type = ie->arg_type;
1447             if (arg_type[0] != TYPE_PTR) {
1448                 fprintf(stderr, "cannot patch size for ioctl 0x%x\n",
1449                         ie->target_cmd);
1450                 exit(1);
1451             }
1452             arg_type++;
1453             size = thunk_type_size(arg_type, 0);
1454             ie->target_cmd = (ie->target_cmd &
1455                               ~(TARGET_IOC_SIZEMASK << TARGET_IOC_SIZESHIFT)) |
1456                 (size << TARGET_IOC_SIZESHIFT);
1457         }
1458         /* automatic consistency check if same arch */
1459 #if defined(__i386__) && defined(TARGET_I386)
1460         if (ie->target_cmd != ie->host_cmd) {
1461             fprintf(stderr, "ERROR: ioctl: target=0x%x host=0x%x\n",
1462                     ie->target_cmd, ie->host_cmd);
1463         }
1464 #endif
1465         ie++;
1466     }
1467 }
1468
1469 long do_syscall(void *cpu_env, int num, long arg1, long arg2, long arg3,
1470                 long arg4, long arg5, long arg6)
1471 {
1472     long ret;
1473     struct stat st;
1474     struct kernel_statfs *stfs;
1475
1476 #ifdef DEBUG
1477     gemu_log("syscall %d", num);
1478 #endif
1479     switch(num) {
1480     case TARGET_NR_exit:
1481 #ifdef HAVE_GPROF
1482         _mcleanup();
1483 #endif
1484         /* XXX: should free thread stack and CPU env */
1485         _exit(arg1);
1486         ret = 0; /* avoid warning */
1487         break;
1488     case TARGET_NR_read:
1489         page_unprotect_range((void *)arg2, arg3);
1490         ret = get_errno(read(arg1, (void *)arg2, arg3));
1491         break;
1492     case TARGET_NR_write:
1493         ret = get_errno(write(arg1, (void *)arg2, arg3));
1494         break;
1495     case TARGET_NR_open:
1496         ret = get_errno(open(path((const char *)arg1),
1497                              target_to_host_bitmask(arg2, fcntl_flags_tbl),
1498                              arg3));
1499         break;
1500     case TARGET_NR_close:
1501         ret = get_errno(close(arg1));
1502         break;
1503     case TARGET_NR_brk:
1504         ret = do_brk((char *)arg1);
1505         break;
1506     case TARGET_NR_fork:
1507         ret = get_errno(do_fork(cpu_env, SIGCHLD, 0));
1508         break;
1509     case TARGET_NR_waitpid:
1510         {
1511             int *status = (int *)arg2;
1512             ret = get_errno(waitpid(arg1, status, arg3));
1513             if (!is_error(ret) && status)
1514                 tswapls((long *)&status);
1515         }
1516         break;
1517     case TARGET_NR_creat:
1518         ret = get_errno(creat((const char *)arg1, arg2));
1519         break;
1520     case TARGET_NR_link:
1521         ret = get_errno(link((const char *)arg1, (const char *)arg2));
1522         break;
1523     case TARGET_NR_unlink:
1524         ret = get_errno(unlink((const char *)arg1));
1525         break;
1526     case TARGET_NR_execve:
1527         {
1528             char **argp, **envp;
1529             int argc, envc;
1530             uint32_t *p;
1531             char **q;
1532
1533             argc = 0;
1534             for (p = (void *)arg2; *p; p++)
1535                 argc++;
1536             envc = 0;
1537             for (p = (void *)arg3; *p; p++)
1538                 envc++;
1539
1540             argp = alloca((argc + 1) * sizeof(void *));
1541             envp = alloca((envc + 1) * sizeof(void *));
1542
1543             for (p = (void *)arg2, q = argp; *p; p++, q++)
1544                 *q = (void *)tswap32(*p);
1545             *q = NULL;
1546
1547             for (p = (void *)arg3, q = envp; *p; p++, q++)
1548                 *q = (void *)tswap32(*p);
1549             *q = NULL;
1550
1551             ret = get_errno(execve((const char *)arg1, argp, envp));
1552         }
1553         break;
1554     case TARGET_NR_chdir:
1555         ret = get_errno(chdir((const char *)arg1));
1556         break;
1557     case TARGET_NR_time:
1558         {
1559             int *time_ptr = (int *)arg1;
1560             ret = get_errno(time((time_t *)time_ptr));
1561             if (!is_error(ret) && time_ptr)
1562                 tswap32s(time_ptr);
1563         }
1564         break;
1565     case TARGET_NR_mknod:
1566         ret = get_errno(mknod((const char *)arg1, arg2, arg3));
1567         break;
1568     case TARGET_NR_chmod:
1569         ret = get_errno(chmod((const char *)arg1, arg2));
1570         break;
1571 #ifdef TARGET_NR_break
1572     case TARGET_NR_break:
1573         goto unimplemented;
1574 #endif
1575 #ifdef TARGET_NR_oldstat
1576     case TARGET_NR_oldstat:
1577         goto unimplemented;
1578 #endif
1579     case TARGET_NR_lseek:
1580         ret = get_errno(lseek(arg1, arg2, arg3));
1581         break;
1582     case TARGET_NR_getpid:
1583         ret = get_errno(getpid());
1584         break;
1585     case TARGET_NR_mount:
1586         /* need to look at the data field */
1587         goto unimplemented;
1588     case TARGET_NR_umount:
1589         ret = get_errno(umount((const char *)arg1));
1590         break;
1591     case TARGET_NR_stime:
1592         {
1593             int *time_ptr = (int *)arg1;
1594             if (time_ptr)
1595                 tswap32s(time_ptr);
1596             ret = get_errno(stime((time_t *)time_ptr));
1597         }
1598         break;
1599     case TARGET_NR_ptrace:
1600         goto unimplemented;
1601     case TARGET_NR_alarm:
1602         ret = alarm(arg1);
1603         break;
1604 #ifdef TARGET_NR_oldfstat
1605     case TARGET_NR_oldfstat:
1606         goto unimplemented;
1607 #endif
1608     case TARGET_NR_pause:
1609         ret = get_errno(pause());
1610         break;
1611     case TARGET_NR_utime:
1612         {
1613             struct utimbuf tbuf;
1614             struct target_utimbuf *target_tbuf = (void *)arg2;
1615             tbuf.actime = tswapl(target_tbuf->actime);
1616             tbuf.modtime = tswapl(target_tbuf->modtime);
1617             ret = get_errno(utime((const char *)arg1, &tbuf));
1618         }
1619         break;
1620 #ifdef TARGET_NR_stty
1621     case TARGET_NR_stty:
1622         goto unimplemented;
1623 #endif
1624 #ifdef TARGET_NR_gtty
1625     case TARGET_NR_gtty:
1626         goto unimplemented;
1627 #endif
1628     case TARGET_NR_access:
1629         ret = get_errno(access((const char *)arg1, arg2));
1630         break;
1631     case TARGET_NR_nice:
1632         ret = get_errno(nice(arg1));
1633         break;
1634 #ifdef TARGET_NR_ftime
1635     case TARGET_NR_ftime:
1636         goto unimplemented;
1637 #endif
1638     case TARGET_NR_sync:
1639         sync();
1640         ret = 0;
1641         break;
1642     case TARGET_NR_kill:
1643         ret = get_errno(kill(arg1, arg2));
1644         break;
1645     case TARGET_NR_rename:
1646         ret = get_errno(rename((const char *)arg1, (const char *)arg2));
1647         break;
1648     case TARGET_NR_mkdir:
1649         ret = get_errno(mkdir((const char *)arg1, arg2));
1650         break;
1651     case TARGET_NR_rmdir:
1652         ret = get_errno(rmdir((const char *)arg1));
1653         break;
1654     case TARGET_NR_dup:
1655         ret = get_errno(dup(arg1));
1656         break;
1657     case TARGET_NR_pipe:
1658         {
1659             int *pipe_ptr = (int *)arg1;
1660             ret = get_errno(pipe(pipe_ptr));
1661             if (!is_error(ret)) {
1662                 tswap32s(&pipe_ptr[0]);
1663                 tswap32s(&pipe_ptr[1]);
1664             }
1665         }
1666         break;
1667     case TARGET_NR_times:
1668         {
1669             struct target_tms *tmsp = (void *)arg1;
1670             struct tms tms;
1671             ret = get_errno(times(&tms));
1672             if (tmsp) {
1673                 tmsp->tms_utime = tswapl(host_to_target_clock_t(tms.tms_utime));
1674                 tmsp->tms_stime = tswapl(host_to_target_clock_t(tms.tms_stime));
1675                 tmsp->tms_cutime = tswapl(host_to_target_clock_t(tms.tms_cutime));
1676                 tmsp->tms_cstime = tswapl(host_to_target_clock_t(tms.tms_cstime));
1677             }
1678             if (!is_error(ret))
1679                 ret = host_to_target_clock_t(ret);
1680         }
1681         break;
1682 #ifdef TARGET_NR_prof
1683     case TARGET_NR_prof:
1684         goto unimplemented;
1685 #endif
1686     case TARGET_NR_signal:
1687         goto unimplemented;
1688
1689     case TARGET_NR_acct:
1690         goto unimplemented;
1691     case TARGET_NR_umount2:
1692         ret = get_errno(umount2((const char *)arg1, arg2));
1693         break;
1694 #ifdef TARGET_NR_lock
1695     case TARGET_NR_lock:
1696         goto unimplemented;
1697 #endif
1698     case TARGET_NR_ioctl:
1699         ret = do_ioctl(arg1, arg2, arg3);
1700         break;
1701     case TARGET_NR_fcntl:
1702         ret = get_errno(do_fcntl(arg1, arg2, arg3));
1703         break;
1704 #ifdef TARGET_NR_mpx
1705     case TARGET_NR_mpx:
1706         goto unimplemented;
1707 #endif
1708     case TARGET_NR_setpgid:
1709         ret = get_errno(setpgid(arg1, arg2));
1710         break;
1711 #ifdef TARGET_NR_ulimit
1712     case TARGET_NR_ulimit:
1713         goto unimplemented;
1714 #endif
1715 #ifdef TARGET_NR_oldolduname
1716     case TARGET_NR_oldolduname:
1717         goto unimplemented;
1718 #endif
1719     case TARGET_NR_umask:
1720         ret = get_errno(umask(arg1));
1721         break;
1722     case TARGET_NR_chroot:
1723         ret = get_errno(chroot((const char *)arg1));
1724         break;
1725     case TARGET_NR_ustat:
1726         goto unimplemented;
1727     case TARGET_NR_dup2:
1728         ret = get_errno(dup2(arg1, arg2));
1729         break;
1730     case TARGET_NR_getppid:
1731         ret = get_errno(getppid());
1732         break;
1733     case TARGET_NR_getpgrp:
1734         ret = get_errno(getpgrp());
1735         break;
1736     case TARGET_NR_setsid:
1737         ret = get_errno(setsid());
1738         break;
1739     case TARGET_NR_sigaction:
1740         {
1741             struct target_old_sigaction *old_act = (void *)arg2;
1742             struct target_old_sigaction *old_oact = (void *)arg3;
1743             struct target_sigaction act, oact, *pact;
1744             if (old_act) {
1745                 act._sa_handler = old_act->_sa_handler;
1746                 target_siginitset(&act.sa_mask, old_act->sa_mask);
1747                 act.sa_flags = old_act->sa_flags;
1748                 act.sa_restorer = old_act->sa_restorer;
1749                 pact = &act;
1750             } else {
1751                 pact = NULL;
1752             }
1753             ret = get_errno(do_sigaction(arg1, pact, &oact));
1754             if (!is_error(ret) && old_oact) {
1755                 old_oact->_sa_handler = oact._sa_handler;
1756                 old_oact->sa_mask = oact.sa_mask.sig[0];
1757                 old_oact->sa_flags = oact.sa_flags;
1758                 old_oact->sa_restorer = oact.sa_restorer;
1759             }
1760         }
1761         break;
1762     case TARGET_NR_rt_sigaction:
1763         ret = get_errno(do_sigaction(arg1, (void *)arg2, (void *)arg3));
1764         break;
1765     case TARGET_NR_sgetmask:
1766         {
1767             sigset_t cur_set;
1768             target_ulong target_set;
1769             sigprocmask(0, NULL, &cur_set);
1770             host_to_target_old_sigset(&target_set, &cur_set);
1771             ret = target_set;
1772         }
1773         break;
1774     case TARGET_NR_ssetmask:
1775         {
1776             sigset_t set, oset, cur_set;
1777             target_ulong target_set = arg1;
1778             sigprocmask(0, NULL, &cur_set);
1779             target_to_host_old_sigset(&set, &target_set);
1780             sigorset(&set, &set, &cur_set);
1781             sigprocmask(SIG_SETMASK, &set, &oset);
1782             host_to_target_old_sigset(&target_set, &oset);
1783             ret = target_set;
1784         }
1785         break;
1786     case TARGET_NR_sigprocmask:
1787         {
1788             int how = arg1;
1789             sigset_t set, oldset, *set_ptr;
1790             target_ulong *pset = (void *)arg2, *poldset = (void *)arg3;
1791
1792             if (pset) {
1793                 switch(how) {
1794                 case TARGET_SIG_BLOCK:
1795                     how = SIG_BLOCK;
1796                     break;
1797                 case TARGET_SIG_UNBLOCK:
1798                     how = SIG_UNBLOCK;
1799                     break;
1800                 case TARGET_SIG_SETMASK:
1801                     how = SIG_SETMASK;
1802                     break;
1803                 default:
1804                     ret = -EINVAL;
1805                     goto fail;
1806                 }
1807                 target_to_host_old_sigset(&set, pset);
1808                 set_ptr = &set;
1809             } else {
1810                 how = 0;
1811                 set_ptr = NULL;
1812             }
1813             ret = get_errno(sigprocmask(arg1, set_ptr, &oldset));
1814             if (!is_error(ret) && poldset) {
1815                 host_to_target_old_sigset(poldset, &oldset);
1816             }
1817         }
1818         break;
1819     case TARGET_NR_rt_sigprocmask:
1820         {
1821             int how = arg1;
1822             sigset_t set, oldset, *set_ptr;
1823             target_sigset_t *pset = (void *)arg2;
1824             target_sigset_t *poldset = (void *)arg3;
1825
1826             if (pset) {
1827                 switch(how) {
1828                 case TARGET_SIG_BLOCK:
1829                     how = SIG_BLOCK;
1830                     break;
1831                 case TARGET_SIG_UNBLOCK:
1832                     how = SIG_UNBLOCK;
1833                     break;
1834                 case TARGET_SIG_SETMASK:
1835                     how = SIG_SETMASK;
1836                     break;
1837                 default:
1838                     ret = -EINVAL;
1839                     goto fail;
1840                 }
1841                 target_to_host_sigset(&set, pset);
1842                 set_ptr = &set;
1843             } else {
1844                 how = 0;
1845                 set_ptr = NULL;
1846             }
1847             ret = get_errno(sigprocmask(how, set_ptr, &oldset));
1848             if (!is_error(ret) && poldset) {
1849                 host_to_target_sigset(poldset, &oldset);
1850             }
1851         }
1852         break;
1853     case TARGET_NR_sigpending:
1854         {
1855             sigset_t set;
1856             ret = get_errno(sigpending(&set));
1857             if (!is_error(ret)) {
1858                 host_to_target_old_sigset((target_ulong *)arg1, &set);
1859             }
1860         }
1861         break;
1862     case TARGET_NR_rt_sigpending:
1863         {
1864             sigset_t set;
1865             ret = get_errno(sigpending(&set));
1866             if (!is_error(ret)) {
1867                 host_to_target_sigset((target_sigset_t *)arg1, &set);
1868             }
1869         }
1870         break;
1871     case TARGET_NR_sigsuspend:
1872         {
1873             sigset_t set;
1874             target_to_host_old_sigset(&set, (target_ulong *)arg1);
1875             ret = get_errno(sigsuspend(&set));
1876         }
1877         break;
1878     case TARGET_NR_rt_sigsuspend:
1879         {
1880             sigset_t set;
1881             target_to_host_sigset(&set, (target_sigset_t *)arg1);
1882             ret = get_errno(sigsuspend(&set));
1883         }
1884         break;
1885     case TARGET_NR_rt_sigtimedwait:
1886         {
1887             target_sigset_t *target_set = (void *)arg1;
1888             target_siginfo_t *target_uinfo = (void *)arg2;
1889             struct target_timespec *target_uts = (void *)arg3;
1890             sigset_t set;
1891             struct timespec uts, *puts;
1892             siginfo_t uinfo;
1893
1894             target_to_host_sigset(&set, target_set);
1895             if (target_uts) {
1896                 puts = &uts;
1897                 puts->tv_sec = tswapl(target_uts->tv_sec);
1898                 puts->tv_nsec = tswapl(target_uts->tv_nsec);
1899             } else {
1900                 puts = NULL;
1901             }
1902             ret = get_errno(sigtimedwait(&set, &uinfo, puts));
1903             if (!is_error(ret) && target_uinfo) {
1904                 host_to_target_siginfo(target_uinfo, &uinfo);
1905             }
1906         }
1907         break;
1908     case TARGET_NR_rt_sigqueueinfo:
1909         {
1910             siginfo_t uinfo;
1911             target_to_host_siginfo(&uinfo, (target_siginfo_t *)arg3);
1912             ret = get_errno(sys_rt_sigqueueinfo(arg1, arg2, &uinfo));
1913         }
1914         break;
1915     case TARGET_NR_sigreturn:
1916         /* NOTE: ret is eax, so not transcoding must be done */
1917         ret = do_sigreturn(cpu_env);
1918         break;
1919     case TARGET_NR_rt_sigreturn:
1920         /* NOTE: ret is eax, so not transcoding must be done */
1921         ret = do_rt_sigreturn(cpu_env);
1922         break;
1923     case TARGET_NR_sethostname:
1924         ret = get_errno(sethostname((const char *)arg1, arg2));
1925         break;
1926     case TARGET_NR_setrlimit:
1927         {
1928             /* XXX: convert resource ? */
1929             int resource = arg1;
1930             struct target_rlimit *target_rlim = (void *)arg2;
1931             struct rlimit rlim;
1932             rlim.rlim_cur = tswapl(target_rlim->rlim_cur);
1933             rlim.rlim_max = tswapl(target_rlim->rlim_max);
1934             ret = get_errno(setrlimit(resource, &rlim));
1935         }
1936         break;
1937     case TARGET_NR_getrlimit:
1938         {
1939             /* XXX: convert resource ? */
1940             int resource = arg1;
1941             struct target_rlimit *target_rlim = (void *)arg2;
1942             struct rlimit rlim;
1943
1944             ret = get_errno(getrlimit(resource, &rlim));
1945             if (!is_error(ret)) {
1946                 target_rlim->rlim_cur = tswapl(rlim.rlim_cur);
1947                 target_rlim->rlim_max = tswapl(rlim.rlim_max);
1948             }
1949         }
1950         break;
1951     case TARGET_NR_getrusage:
1952         {
1953             struct rusage rusage;
1954             struct target_rusage *target_rusage = (void *)arg2;
1955             ret = get_errno(getrusage(arg1, &rusage));
1956             if (!is_error(ret)) {
1957                 host_to_target_rusage(target_rusage, &rusage);
1958             }
1959         }
1960         break;
1961     case TARGET_NR_gettimeofday:
1962         {
1963             struct target_timeval *target_tv = (void *)arg1;
1964             struct timeval tv;
1965             ret = get_errno(gettimeofday(&tv, NULL));
1966             if (!is_error(ret)) {
1967                 host_to_target_timeval(target_tv, &tv);
1968             }
1969         }
1970         break;
1971     case TARGET_NR_settimeofday:
1972         {
1973             struct target_timeval *target_tv = (void *)arg1;
1974             struct timeval tv;
1975             target_to_host_timeval(&tv, target_tv);
1976             ret = get_errno(settimeofday(&tv, NULL));
1977         }
1978         break;
1979     case TARGET_NR_select:
1980         {
1981             struct target_sel_arg_struct *sel = (void *)arg1;
1982             sel->n = tswapl(sel->n);
1983             sel->inp = tswapl(sel->inp);
1984             sel->outp = tswapl(sel->outp);
1985             sel->exp = tswapl(sel->exp);
1986             sel->tvp = tswapl(sel->tvp);
1987             ret = do_select(sel->n, (void *)sel->inp, (void *)sel->outp,
1988                             (void *)sel->exp, (void *)sel->tvp);
1989         }
1990         break;
1991     case TARGET_NR_symlink:
1992         ret = get_errno(symlink((const char *)arg1, (const char *)arg2));
1993         break;
1994 #ifdef TARGET_NR_oldlstat
1995     case TARGET_NR_oldlstat:
1996         goto unimplemented;
1997 #endif
1998     case TARGET_NR_readlink:
1999         ret = get_errno(readlink(path((const char *)arg1), (char *)arg2, arg3));
2000         break;
2001     case TARGET_NR_uselib:
2002         goto unimplemented;
2003     case TARGET_NR_swapon:
2004         ret = get_errno(swapon((const char *)arg1, arg2));
2005         break;
2006     case TARGET_NR_reboot:
2007         goto unimplemented;
2008     case TARGET_NR_readdir:
2009         goto unimplemented;
2010     case TARGET_NR_mmap:
2011 #if defined(TARGET_I386) || defined(TARGET_ARM)
2012         {
2013             uint32_t v1, v2, v3, v4, v5, v6, *vptr;
2014             vptr = (uint32_t *)arg1;
2015             v1 = tswap32(vptr[0]);
2016             v2 = tswap32(vptr[1]);
2017             v3 = tswap32(vptr[2]);
2018             v4 = tswap32(vptr[3]);
2019             v5 = tswap32(vptr[4]);
2020             v6 = tswap32(vptr[5]);
2021             ret = get_errno(target_mmap(v1, v2, v3,
2022                                         target_to_host_bitmask(v4, mmap_flags_tbl),
2023                                         v5, v6));
2024         }
2025 #else
2026         ret = get_errno(target_mmap(arg1, arg2, arg3,
2027                                     target_to_host_bitmask(arg4, mmap_flags_tbl),
2028                                     arg5,
2029                                     arg6));
2030 #endif
2031         break;
2032     case TARGET_NR_mmap2:
2033 #if defined(TARGET_SPARC)
2034 #define MMAP_SHIFT 12
2035 #else
2036 #define MMAP_SHIFT TARGET_PAGE_BITS
2037 #endif
2038         ret = get_errno(target_mmap(arg1, arg2, arg3,
2039                                     target_to_host_bitmask(arg4, mmap_flags_tbl),
2040                                     arg5,
2041                                     arg6 << MMAP_SHIFT));
2042         break;
2043     case TARGET_NR_munmap:
2044         ret = get_errno(target_munmap(arg1, arg2));
2045         break;
2046     case TARGET_NR_mprotect:
2047         ret = get_errno(target_mprotect(arg1, arg2, arg3));
2048         break;
2049     case TARGET_NR_mremap:
2050         ret = get_errno(target_mremap(arg1, arg2, arg3, arg4, arg5));
2051         break;
2052     case TARGET_NR_msync:
2053         ret = get_errno(msync((void *)arg1, arg2, arg3));
2054         break;
2055     case TARGET_NR_mlock:
2056         ret = get_errno(mlock((void *)arg1, arg2));
2057         break;
2058     case TARGET_NR_munlock:
2059         ret = get_errno(munlock((void *)arg1, arg2));
2060         break;
2061     case TARGET_NR_mlockall:
2062         ret = get_errno(mlockall(arg1));
2063         break;
2064     case TARGET_NR_munlockall:
2065         ret = get_errno(munlockall());
2066         break;
2067     case TARGET_NR_truncate:
2068         ret = get_errno(truncate((const char *)arg1, arg2));
2069         break;
2070     case TARGET_NR_ftruncate:
2071         ret = get_errno(ftruncate(arg1, arg2));
2072         break;
2073     case TARGET_NR_fchmod:
2074         ret = get_errno(fchmod(arg1, arg2));
2075         break;
2076     case TARGET_NR_getpriority:
2077         ret = get_errno(getpriority(arg1, arg2));
2078         break;
2079     case TARGET_NR_setpriority:
2080         ret = get_errno(setpriority(arg1, arg2, arg3));
2081         break;
2082 #ifdef TARGET_NR_profil
2083     case TARGET_NR_profil:
2084         goto unimplemented;
2085 #endif
2086     case TARGET_NR_statfs:
2087         stfs = (void *)arg2;
2088         ret = get_errno(sys_statfs(path((const char *)arg1), stfs));
2089     convert_statfs:
2090         if (!is_error(ret)) {
2091             tswap32s(&stfs->f_type);
2092             tswap32s(&stfs->f_bsize);
2093             tswap32s(&stfs->f_blocks);
2094             tswap32s(&stfs->f_bfree);
2095             tswap32s(&stfs->f_bavail);
2096             tswap32s(&stfs->f_files);
2097             tswap32s(&stfs->f_ffree);
2098             tswap32s(&stfs->f_fsid.val[0]);
2099             tswap32s(&stfs->f_fsid.val[1]);
2100             tswap32s(&stfs->f_namelen);
2101         }
2102         break;
2103     case TARGET_NR_fstatfs:
2104         stfs = (void *)arg2;
2105         ret = get_errno(sys_fstatfs(arg1, stfs));
2106         goto convert_statfs;
2107 #ifdef TARGET_NR_ioperm
2108     case TARGET_NR_ioperm:
2109         goto unimplemented;
2110 #endif
2111     case TARGET_NR_socketcall:
2112         ret = do_socketcall(arg1, (int32_t *)arg2);
2113         break;
2114     case TARGET_NR_syslog:
2115         goto unimplemented;
2116     case TARGET_NR_setitimer:
2117         {
2118             struct target_itimerval *target_value = (void *)arg2;
2119             struct target_itimerval *target_ovalue = (void *)arg3;
2120             struct itimerval value, ovalue, *pvalue;
2121
2122             if (target_value) {
2123                 pvalue = &value;
2124                 target_to_host_timeval(&pvalue->it_interval,
2125                                        &target_value->it_interval);
2126                 target_to_host_timeval(&pvalue->it_value,
2127                                        &target_value->it_value);
2128             } else {
2129                 pvalue = NULL;
2130             }
2131             ret = get_errno(setitimer(arg1, pvalue, &ovalue));
2132             if (!is_error(ret) && target_ovalue) {
2133                 host_to_target_timeval(&target_ovalue->it_interval,
2134                                        &ovalue.it_interval);
2135                 host_to_target_timeval(&target_ovalue->it_value,
2136                                        &ovalue.it_value);
2137             }
2138         }
2139         break;
2140     case TARGET_NR_getitimer:
2141         {
2142             struct target_itimerval *target_value = (void *)arg2;
2143             struct itimerval value;
2144
2145             ret = get_errno(getitimer(arg1, &value));
2146             if (!is_error(ret) && target_value) {
2147                 host_to_target_timeval(&target_value->it_interval,
2148                                        &value.it_interval);
2149                 host_to_target_timeval(&target_value->it_value,
2150                                        &value.it_value);
2151             }
2152         }
2153         break;
2154     case TARGET_NR_stat:
2155         ret = get_errno(stat(path((const char *)arg1), &st));
2156         goto do_stat;
2157     case TARGET_NR_lstat:
2158         ret = get_errno(lstat(path((const char *)arg1), &st));
2159         goto do_stat;
2160     case TARGET_NR_fstat:
2161         {
2162             ret = get_errno(fstat(arg1, &st));
2163         do_stat:
2164             if (!is_error(ret)) {
2165                 struct target_stat *target_st = (void *)arg2;
2166                 target_st->st_dev = tswap16(st.st_dev);
2167                 target_st->st_ino = tswapl(st.st_ino);
2168 #if defined(TARGET_PPC)
2169                 target_st->st_mode = tswapl(st.st_mode); /* XXX: check this */
2170                 target_st->st_uid = tswap32(st.st_uid);
2171                 target_st->st_gid = tswap32(st.st_gid);
2172 #else
2173                 target_st->st_mode = tswap16(st.st_mode);
2174                 target_st->st_uid = tswap16(st.st_uid);
2175                 target_st->st_gid = tswap16(st.st_gid);
2176 #endif
2177                 target_st->st_nlink = tswap16(st.st_nlink);
2178                 target_st->st_rdev = tswap16(st.st_rdev);
2179                 target_st->st_size = tswapl(st.st_size);
2180                 target_st->st_blksize = tswapl(st.st_blksize);
2181                 target_st->st_blocks = tswapl(st.st_blocks);
2182                 target_st->target_st_atime = tswapl(st.st_atime);
2183                 target_st->target_st_mtime = tswapl(st.st_mtime);
2184                 target_st->target_st_ctime = tswapl(st.st_ctime);
2185             }
2186         }
2187         break;
2188 #ifdef TARGET_NR_olduname
2189     case TARGET_NR_olduname:
2190         goto unimplemented;
2191 #endif
2192 #ifdef TARGET_NR_iopl
2193     case TARGET_NR_iopl:
2194         goto unimplemented;
2195 #endif
2196     case TARGET_NR_vhangup:
2197         ret = get_errno(vhangup());
2198         break;
2199 #ifdef TARGET_NR_idle
2200     case TARGET_NR_idle:
2201         goto unimplemented;
2202 #endif
2203     case TARGET_NR_wait4:
2204         {
2205             int status;
2206             target_long *status_ptr = (void *)arg2;
2207             struct rusage rusage, *rusage_ptr;
2208             struct target_rusage *target_rusage = (void *)arg4;
2209             if (target_rusage)
2210                 rusage_ptr = &rusage;
2211             else
2212                 rusage_ptr = NULL;
2213             ret = get_errno(wait4(arg1, &status, arg3, rusage_ptr));
2214             if (!is_error(ret)) {
2215                 if (status_ptr)
2216                     *status_ptr = tswap32(status);
2217                 if (target_rusage) {
2218                     host_to_target_rusage(target_rusage, &rusage);
2219                 }
2220             }
2221         }
2222         break;
2223     case TARGET_NR_swapoff:
2224         ret = get_errno(swapoff((const char *)arg1));
2225         break;
2226     case TARGET_NR_sysinfo:
2227         goto unimplemented;
2228     case TARGET_NR_ipc:
2229         goto unimplemented;
2230     case TARGET_NR_fsync:
2231         ret = get_errno(fsync(arg1));
2232         break;
2233     case TARGET_NR_clone:
2234         ret = get_errno(do_fork(cpu_env, arg1, arg2));
2235         break;
2236 #ifdef __NR_exit_group
2237         /* new thread calls */
2238     case TARGET_NR_exit_group:
2239         ret = get_errno(exit_group(arg1));
2240         break;
2241 #endif
2242     case TARGET_NR_setdomainname:
2243         ret = get_errno(setdomainname((const char *)arg1, arg2));
2244         break;
2245     case TARGET_NR_uname:
2246         /* no need to transcode because we use the linux syscall */
2247         ret = get_errno(sys_uname((struct new_utsname *)arg1));
2248         break;
2249 #ifdef TARGET_I386
2250     case TARGET_NR_modify_ldt:
2251         ret = get_errno(do_modify_ldt(cpu_env, arg1, (void *)arg2, arg3));
2252         break;
2253     case TARGET_NR_vm86old:
2254         goto unimplemented;
2255     case TARGET_NR_vm86:
2256         ret = do_vm86(cpu_env, arg1, (void *)arg2);
2257         break;
2258 #endif
2259     case TARGET_NR_adjtimex:
2260         goto unimplemented;
2261     case TARGET_NR_create_module:
2262     case TARGET_NR_init_module:
2263     case TARGET_NR_delete_module:
2264     case TARGET_NR_get_kernel_syms:
2265         goto unimplemented;
2266     case TARGET_NR_quotactl:
2267         goto unimplemented;
2268     case TARGET_NR_getpgid:
2269         ret = get_errno(getpgid(arg1));
2270         break;
2271     case TARGET_NR_fchdir:
2272         ret = get_errno(fchdir(arg1));
2273         break;
2274     case TARGET_NR_bdflush:
2275         goto unimplemented;
2276     case TARGET_NR_sysfs:
2277         goto unimplemented;
2278     case TARGET_NR_personality:
2279         ret = get_errno(personality(arg1));
2280         break;
2281     case TARGET_NR_afs_syscall:
2282         goto unimplemented;
2283     case TARGET_NR__llseek:
2284         {
2285             int64_t res;
2286             ret = get_errno(_llseek(arg1, arg2, arg3, &res, arg5));
2287             *(int64_t *)arg4 = tswap64(res);
2288         }
2289         break;
2290     case TARGET_NR_getdents:
2291 #if TARGET_LONG_SIZE != 4
2292 #error not supported
2293 #elif TARGET_LONG_SIZE == 4 && HOST_LONG_SIZE == 8
2294         {
2295             struct target_dirent *target_dirp = (void *)arg2;
2296             struct dirent *dirp;
2297             long count = arg3;
2298
2299             dirp = malloc(count);
2300             if (!dirp)
2301                 return -ENOMEM;
2302
2303             ret = get_errno(sys_getdents(arg1, dirp, count));
2304             if (!is_error(ret)) {
2305                 struct dirent *de;
2306                 struct target_dirent *tde;
2307                 int len = ret;
2308                 int reclen, treclen;
2309                 int count1, tnamelen;
2310
2311                 count1 = 0;
2312                 de = dirp;
2313                 tde = target_dirp;
2314                 while (len > 0) {
2315                     reclen = de->d_reclen;
2316                     treclen = reclen - (2 * (sizeof(long) - sizeof(target_long)));
2317                     tde->d_reclen = tswap16(treclen);
2318                     tde->d_ino = tswapl(de->d_ino);
2319                     tde->d_off = tswapl(de->d_off);
2320                     tnamelen = treclen - (2 * sizeof(target_long) + 2);
2321                     if (tnamelen > 256)
2322                         tnamelen = 256;
2323                     strncpy(tde->d_name, de->d_name, tnamelen);
2324                     de = (struct dirent *)((char *)de + reclen);
2325                     len -= reclen;
2326                     tde = (struct dirent *)((char *)tde + treclen);
2327                     count1 += treclen;
2328                 }
2329                 ret = count1;
2330             }
2331             free(dirp);
2332         }
2333 #else
2334         {
2335             struct dirent *dirp = (void *)arg2;
2336             long count = arg3;
2337
2338             ret = get_errno(sys_getdents(arg1, dirp, count));
2339             if (!is_error(ret)) {
2340                 struct dirent *de;
2341                 int len = ret;
2342                 int reclen;
2343                 de = dirp;
2344                 while (len > 0) {
2345                     reclen = de->d_reclen;
2346                     if (reclen > len)
2347                         break;
2348                     de->d_reclen = tswap16(reclen);
2349                     tswapls(&de->d_ino);
2350                     tswapls(&de->d_off);
2351                     de = (struct dirent *)((char *)de + reclen);
2352                     len -= reclen;
2353                 }
2354             }
2355         }
2356 #endif
2357         break;
2358     case TARGET_NR_getdents64:
2359         {
2360             struct dirent64 *dirp = (void *)arg2;
2361             long count = arg3;
2362             ret = get_errno(sys_getdents64(arg1, dirp, count));
2363             if (!is_error(ret)) {
2364                 struct dirent64 *de;
2365                 int len = ret;
2366                 int reclen;
2367                 de = dirp;
2368                 while (len > 0) {
2369                     reclen = de->d_reclen;
2370                     if (reclen > len)
2371                         break;
2372                     de->d_reclen = tswap16(reclen);
2373                     tswap64s(&de->d_ino);
2374                     tswap64s(&de->d_off);
2375                     de = (struct dirent64 *)((char *)de + reclen);
2376                     len -= reclen;
2377                 }
2378             }
2379         }
2380         break;
2381     case TARGET_NR__newselect:
2382         ret = do_select(arg1, (void *)arg2, (void *)arg3, (void *)arg4,
2383                         (void *)arg5);
2384         break;
2385     case TARGET_NR_poll:
2386         {
2387             struct target_pollfd *target_pfd = (void *)arg1;
2388             unsigned int nfds = arg2;
2389             int timeout = arg3;
2390             struct pollfd *pfd;
2391             unsigned int i;
2392
2393             pfd = alloca(sizeof(struct pollfd) * nfds);
2394             for(i = 0; i < nfds; i++) {
2395                 pfd[i].fd = tswap32(target_pfd[i].fd);
2396                 pfd[i].events = tswap16(target_pfd[i].events);
2397             }
2398             ret = get_errno(poll(pfd, nfds, timeout));
2399             if (!is_error(ret)) {
2400                 for(i = 0; i < nfds; i++) {
2401                     target_pfd[i].revents = tswap16(pfd[i].revents);
2402                 }
2403             }
2404         }
2405         break;
2406     case TARGET_NR_flock:
2407         /* NOTE: the flock constant seems to be the same for every
2408            Linux platform */
2409         ret = get_errno(flock(arg1, arg2));
2410         break;
2411     case TARGET_NR_readv:
2412         {
2413             int count = arg3;
2414             int i;
2415             struct iovec *vec;
2416             struct target_iovec *target_vec = (void *)arg2;
2417
2418             vec = alloca(count * sizeof(struct iovec));
2419             for(i = 0;i < count; i++) {
2420                 vec[i].iov_base = (void *)tswapl(target_vec[i].iov_base);
2421                 vec[i].iov_len = tswapl(target_vec[i].iov_len);
2422             }
2423             ret = get_errno(readv(arg1, vec, count));
2424         }
2425         break;
2426     case TARGET_NR_writev:
2427         {
2428             int count = arg3;
2429             int i;
2430             struct iovec *vec;
2431             struct target_iovec *target_vec = (void *)arg2;
2432
2433             vec = alloca(count * sizeof(struct iovec));
2434             for(i = 0;i < count; i++) {
2435                 vec[i].iov_base = (void *)tswapl(target_vec[i].iov_base);
2436                 vec[i].iov_len = tswapl(target_vec[i].iov_len);
2437             }
2438             ret = get_errno(writev(arg1, vec, count));
2439         }
2440         break;
2441     case TARGET_NR_getsid:
2442         ret = get_errno(getsid(arg1));
2443         break;
2444     case TARGET_NR_fdatasync:
2445         ret = get_errno(fdatasync(arg1));
2446         break;
2447     case TARGET_NR__sysctl:
2448         goto unimplemented;
2449     case TARGET_NR_sched_setparam:
2450         {
2451             struct sched_param *target_schp = (void *)arg2;
2452             struct sched_param schp;
2453             schp.sched_priority = tswap32(target_schp->sched_priority);
2454             ret = get_errno(sched_setparam(arg1, &schp));
2455         }
2456         break;
2457     case TARGET_NR_sched_getparam:
2458         {
2459             struct sched_param *target_schp = (void *)arg2;
2460             struct sched_param schp;
2461             ret = get_errno(sched_getparam(arg1, &schp));
2462             if (!is_error(ret)) {
2463                 target_schp->sched_priority = tswap32(schp.sched_priority);
2464             }
2465         }
2466         break;
2467     case TARGET_NR_sched_setscheduler:
2468         {
2469             struct sched_param *target_schp = (void *)arg3;
2470             struct sched_param schp;
2471             schp.sched_priority = tswap32(target_schp->sched_priority);
2472             ret = get_errno(sched_setscheduler(arg1, arg2, &schp));
2473         }
2474         break;
2475     case TARGET_NR_sched_getscheduler:
2476         ret = get_errno(sched_getscheduler(arg1));
2477         break;
2478     case TARGET_NR_sched_yield:
2479         ret = get_errno(sched_yield());
2480         break;
2481     case TARGET_NR_sched_get_priority_max:
2482         ret = get_errno(sched_get_priority_max(arg1));
2483         break;
2484     case TARGET_NR_sched_get_priority_min:
2485         ret = get_errno(sched_get_priority_min(arg1));
2486         break;
2487     case TARGET_NR_sched_rr_get_interval:
2488         {
2489             struct target_timespec *target_ts = (void *)arg2;
2490             struct timespec ts;
2491             ret = get_errno(sched_rr_get_interval(arg1, &ts));
2492             if (!is_error(ret)) {
2493                 target_ts->tv_sec = tswapl(ts.tv_sec);
2494                 target_ts->tv_nsec = tswapl(ts.tv_nsec);
2495             }
2496         }
2497         break;
2498     case TARGET_NR_nanosleep:
2499         {
2500             struct target_timespec *target_req = (void *)arg1;
2501             struct target_timespec *target_rem = (void *)arg2;
2502             struct timespec req, rem;
2503             req.tv_sec = tswapl(target_req->tv_sec);
2504             req.tv_nsec = tswapl(target_req->tv_nsec);
2505             ret = get_errno(nanosleep(&req, &rem));
2506             if (is_error(ret) && target_rem) {
2507                 target_rem->tv_sec = tswapl(rem.tv_sec);
2508                 target_rem->tv_nsec = tswapl(rem.tv_nsec);
2509             }
2510         }
2511         break;
2512     case TARGET_NR_query_module:
2513         goto unimplemented;
2514     case TARGET_NR_nfsservctl:
2515         goto unimplemented;
2516     case TARGET_NR_prctl:
2517         goto unimplemented;
2518 #ifdef TARGET_NR_pread
2519     case TARGET_NR_pread:
2520         page_unprotect_range((void *)arg2, arg3);
2521         ret = get_errno(pread(arg1, (void *)arg2, arg3, arg4));
2522         break;
2523     case TARGET_NR_pwrite:
2524         ret = get_errno(pwrite(arg1, (void *)arg2, arg3, arg4));
2525         break;
2526 #endif
2527     case TARGET_NR_getcwd:
2528         ret = get_errno(sys_getcwd1((char *)arg1, arg2));
2529         break;
2530     case TARGET_NR_capget:
2531         goto unimplemented;
2532     case TARGET_NR_capset:
2533         goto unimplemented;
2534     case TARGET_NR_sigaltstack:
2535         goto unimplemented;
2536     case TARGET_NR_sendfile:
2537         goto unimplemented;
2538 #ifdef TARGET_NR_getpmsg
2539     case TARGET_NR_getpmsg:
2540         goto unimplemented;
2541 #endif
2542 #ifdef TARGET_NR_putpmsg
2543     case TARGET_NR_putpmsg:
2544         goto unimplemented;
2545 #endif
2546     case TARGET_NR_vfork:
2547         ret = get_errno(do_fork(cpu_env, CLONE_VFORK | CLONE_VM | SIGCHLD, 0));
2548         break;
2549 #ifdef TARGET_NR_ugetrlimit
2550     case TARGET_NR_ugetrlimit:
2551     {
2552         struct rlimit rlim;
2553         ret = get_errno(getrlimit(arg1, &rlim));
2554         if (!is_error(ret)) {
2555             struct target_rlimit *target_rlim = (void *)arg2;
2556             target_rlim->rlim_cur = tswapl(rlim.rlim_cur);
2557             target_rlim->rlim_max = tswapl(rlim.rlim_max);
2558         }
2559         break;
2560     }
2561 #endif
2562     case TARGET_NR_truncate64:
2563         goto unimplemented;
2564     case TARGET_NR_ftruncate64:
2565         goto unimplemented;
2566     case TARGET_NR_stat64:
2567         ret = get_errno(stat(path((const char *)arg1), &st));
2568         goto do_stat64;
2569     case TARGET_NR_lstat64:
2570         ret = get_errno(lstat(path((const char *)arg1), &st));
2571         goto do_stat64;
2572     case TARGET_NR_fstat64:
2573         {
2574             ret = get_errno(fstat(arg1, &st));
2575         do_stat64:
2576             if (!is_error(ret)) {
2577                 struct target_stat64 *target_st = (void *)arg2;
2578                 memset(target_st, 0, sizeof(struct target_stat64));
2579                 put_user(st.st_dev, &target_st->st_dev);
2580                 put_user(st.st_ino, &target_st->st_ino);
2581 #ifdef TARGET_STAT64_HAS_BROKEN_ST_INO
2582                 put_user(st.st_ino, &target_st->__st_ino);
2583 #endif
2584                 put_user(st.st_mode, &target_st->st_mode);
2585                 put_user(st.st_nlink, &target_st->st_nlink);
2586                 put_user(st.st_uid, &target_st->st_uid);
2587                 put_user(st.st_gid, &target_st->st_gid);
2588                 put_user(st.st_rdev, &target_st->st_rdev);
2589                 /* XXX: better use of kernel struct */
2590                 put_user(st.st_size, &target_st->st_size);
2591                 put_user(st.st_blksize, &target_st->st_blksize);
2592                 put_user(st.st_blocks, &target_st->st_blocks);
2593                 put_user(st.st_atime, &target_st->target_st_atime);
2594                 put_user(st.st_mtime, &target_st->target_st_mtime);
2595                 put_user(st.st_ctime, &target_st->target_st_ctime);
2596             }
2597         }
2598         break;
2599
2600 #ifdef USE_UID16
2601     case TARGET_NR_lchown:
2602         ret = get_errno(lchown((const char *)arg1, low2highuid(arg2), low2highgid(arg3)));
2603         break;
2604     case TARGET_NR_getuid:
2605         ret = get_errno(high2lowuid(getuid()));
2606         break;
2607     case TARGET_NR_getgid:
2608         ret = get_errno(high2lowgid(getgid()));
2609         break;
2610     case TARGET_NR_geteuid:
2611         ret = get_errno(high2lowuid(geteuid()));
2612         break;
2613     case TARGET_NR_getegid:
2614         ret = get_errno(high2lowgid(getegid()));
2615         break;
2616     case TARGET_NR_setreuid:
2617         ret = get_errno(setreuid(low2highuid(arg1), low2highuid(arg2)));
2618         break;
2619     case TARGET_NR_setregid:
2620         ret = get_errno(setregid(low2highgid(arg1), low2highgid(arg2)));
2621         break;
2622     case TARGET_NR_getgroups:
2623         {
2624             int gidsetsize = arg1;
2625             uint16_t *target_grouplist = (void *)arg2;
2626             gid_t *grouplist;
2627             int i;
2628
2629             grouplist = alloca(gidsetsize * sizeof(gid_t));
2630             ret = get_errno(getgroups(gidsetsize, grouplist));
2631             if (!is_error(ret)) {
2632                 for(i = 0;i < gidsetsize; i++)
2633                     target_grouplist[i] = tswap16(grouplist[i]);
2634             }
2635         }
2636         break;
2637     case TARGET_NR_setgroups:
2638         {
2639             int gidsetsize = arg1;
2640             uint16_t *target_grouplist = (void *)arg2;
2641             gid_t *grouplist;
2642             int i;
2643
2644             grouplist = alloca(gidsetsize * sizeof(gid_t));
2645             for(i = 0;i < gidsetsize; i++)
2646                 grouplist[i] = tswap16(target_grouplist[i]);
2647             ret = get_errno(setgroups(gidsetsize, grouplist));
2648         }
2649         break;
2650     case TARGET_NR_fchown:
2651         ret = get_errno(fchown(arg1, low2highuid(arg2), low2highgid(arg3)));
2652         break;
2653 #ifdef TARGET_NR_setresuid
2654     case TARGET_NR_setresuid:
2655         ret = get_errno(setresuid(low2highuid(arg1),
2656                                   low2highuid(arg2),
2657                                   low2highuid(arg3)));
2658         break;
2659 #endif
2660 #ifdef TARGET_NR_getresuid
2661     case TARGET_NR_getresuid:
2662         {
2663             int ruid, euid, suid;
2664             ret = get_errno(getresuid(&ruid, &euid, &suid));
2665             if (!is_error(ret)) {
2666                 *(uint16_t *)arg1 = tswap16(high2lowuid(ruid));
2667                 *(uint16_t *)arg2 = tswap16(high2lowuid(euid));
2668                 *(uint16_t *)arg3 = tswap16(high2lowuid(suid));
2669             }
2670         }
2671         break;
2672 #endif
2673 #ifdef TARGET_NR_getresgid
2674     case TARGET_NR_setresgid:
2675         ret = get_errno(setresgid(low2highgid(arg1),
2676                                   low2highgid(arg2),
2677                                   low2highgid(arg3)));
2678         break;
2679 #endif
2680 #ifdef TARGET_NR_getresgid
2681     case TARGET_NR_getresgid:
2682         {
2683             int rgid, egid, sgid;
2684             ret = get_errno(getresgid(&rgid, &egid, &sgid));
2685             if (!is_error(ret)) {
2686                 *(uint16_t *)arg1 = tswap16(high2lowgid(rgid));
2687                 *(uint16_t *)arg2 = tswap16(high2lowgid(egid));
2688                 *(uint16_t *)arg3 = tswap16(high2lowgid(sgid));
2689             }
2690         }
2691         break;
2692 #endif
2693     case TARGET_NR_chown:
2694         ret = get_errno(chown((const char *)arg1, low2highuid(arg2), low2highgid(arg3)));
2695         break;
2696     case TARGET_NR_setuid:
2697         ret = get_errno(setuid(low2highuid(arg1)));
2698         break;
2699     case TARGET_NR_setgid:
2700         ret = get_errno(setgid(low2highgid(arg1)));
2701         break;
2702     case TARGET_NR_setfsuid:
2703         ret = get_errno(setfsuid(arg1));
2704         break;
2705     case TARGET_NR_setfsgid:
2706         ret = get_errno(setfsgid(arg1));
2707         break;
2708 #endif /* USE_UID16 */
2709
2710     case TARGET_NR_lchown32:
2711         ret = get_errno(lchown((const char *)arg1, arg2, arg3));
2712         break;
2713     case TARGET_NR_getuid32:
2714         ret = get_errno(getuid());
2715         break;
2716     case TARGET_NR_getgid32:
2717         ret = get_errno(getgid());
2718         break;
2719     case TARGET_NR_geteuid32:
2720         ret = get_errno(geteuid());
2721         break;
2722     case TARGET_NR_getegid32:
2723         ret = get_errno(getegid());
2724         break;
2725     case TARGET_NR_setreuid32:
2726         ret = get_errno(setreuid(arg1, arg2));
2727         break;
2728     case TARGET_NR_setregid32:
2729         ret = get_errno(setregid(arg1, arg2));
2730         break;
2731     case TARGET_NR_getgroups32:
2732         goto unimplemented;
2733     case TARGET_NR_setgroups32:
2734         goto unimplemented;
2735     case TARGET_NR_fchown32:
2736         ret = get_errno(fchown(arg1, arg2, arg3));
2737         break;
2738     case TARGET_NR_setresuid32:
2739         ret = get_errno(setresuid(arg1, arg2, arg3));
2740         break;
2741     case TARGET_NR_getresuid32:
2742         {
2743             int ruid, euid, suid;
2744             ret = get_errno(getresuid(&ruid, &euid, &suid));
2745             if (!is_error(ret)) {
2746                 *(uint32_t *)arg1 = tswap32(ruid);
2747                 *(uint32_t *)arg2 = tswap32(euid);
2748                 *(uint32_t *)arg3 = tswap32(suid);
2749             }
2750         }
2751         break;
2752     case TARGET_NR_setresgid32:
2753         ret = get_errno(setresgid(arg1, arg2, arg3));
2754         break;
2755     case TARGET_NR_getresgid32:
2756         {
2757             int rgid, egid, sgid;
2758             ret = get_errno(getresgid(&rgid, &egid, &sgid));
2759             if (!is_error(ret)) {
2760                 *(uint32_t *)arg1 = tswap32(rgid);
2761                 *(uint32_t *)arg2 = tswap32(egid);
2762                 *(uint32_t *)arg3 = tswap32(sgid);
2763             }
2764         }
2765         break;
2766     case TARGET_NR_chown32:
2767         ret = get_errno(chown((const char *)arg1, arg2, arg3));
2768         break;
2769     case TARGET_NR_setuid32:
2770         ret = get_errno(setuid(arg1));
2771         break;
2772     case TARGET_NR_setgid32:
2773         ret = get_errno(setgid(arg1));
2774         break;
2775     case TARGET_NR_setfsuid32:
2776         ret = get_errno(setfsuid(arg1));
2777         break;
2778     case TARGET_NR_setfsgid32:
2779         ret = get_errno(setfsgid(arg1));
2780         break;
2781
2782     case TARGET_NR_pivot_root:
2783         goto unimplemented;
2784 #ifdef TARGET_NR_mincore
2785     case TARGET_NR_mincore:
2786         goto unimplemented;
2787 #endif
2788 #ifdef TARGET_NR_madvise
2789     case TARGET_NR_madvise:
2790         goto unimplemented;
2791 #endif
2792 #if TARGET_LONG_BITS == 32
2793     case TARGET_NR_fcntl64:
2794     {
2795         struct flock64 fl;
2796         struct target_flock64 *target_fl = (void *)arg3;
2797
2798         switch(arg2) {
2799         case F_GETLK64:
2800             ret = get_errno(fcntl(arg1, arg2, &fl));
2801             if (ret == 0) {
2802                 target_fl->l_type = tswap16(fl.l_type);
2803                 target_fl->l_whence = tswap16(fl.l_whence);
2804                 target_fl->l_start = tswap64(fl.l_start);
2805                 target_fl->l_len = tswap64(fl.l_len);
2806                 target_fl->l_pid = tswapl(fl.l_pid);
2807             }
2808             break;
2809
2810         case F_SETLK64:
2811         case F_SETLKW64:
2812             fl.l_type = tswap16(target_fl->l_type);
2813             fl.l_whence = tswap16(target_fl->l_whence);
2814             fl.l_start = tswap64(target_fl->l_start);
2815             fl.l_len = tswap64(target_fl->l_len);
2816             fl.l_pid = tswapl(target_fl->l_pid);
2817             ret = get_errno(fcntl(arg1, arg2, &fl));
2818             break;
2819         default:
2820             ret = get_errno(do_fcntl(arg1, arg2, arg3));
2821             break;
2822         }
2823         break;
2824     }
2825 #endif
2826 #ifdef TARGET_NR_security
2827     case TARGET_NR_security:
2828         goto unimplemented;
2829 #endif
2830 #ifdef TARGET_NR_getpagesize
2831     case TARGET_NR_getpagesize:
2832         ret = TARGET_PAGE_SIZE;
2833         break;
2834 #endif
2835     case TARGET_NR_gettid:
2836         ret = get_errno(gettid());
2837         break;
2838     case TARGET_NR_readahead:
2839         goto unimplemented;
2840 #ifdef TARGET_NR_setxattr
2841     case TARGET_NR_setxattr:
2842     case TARGET_NR_lsetxattr:
2843     case TARGET_NR_fsetxattr:
2844     case TARGET_NR_getxattr:
2845     case TARGET_NR_lgetxattr:
2846     case TARGET_NR_fgetxattr:
2847     case TARGET_NR_listxattr:
2848     case TARGET_NR_llistxattr:
2849     case TARGET_NR_flistxattr:
2850     case TARGET_NR_removexattr:
2851     case TARGET_NR_lremovexattr:
2852     case TARGET_NR_fremovexattr:
2853         goto unimplemented_nowarn;
2854 #endif
2855 #ifdef TARGET_NR_set_thread_area
2856     case TARGET_NR_set_thread_area:
2857     case TARGET_NR_get_thread_area:
2858         goto unimplemented_nowarn;
2859 #endif
2860     default:
2861     unimplemented:
2862         gemu_log("qemu: Unsupported syscall: %d\n", num);
2863     unimplemented_nowarn:
2864         ret = -ENOSYS;
2865         break;
2866     }
2867  fail:
2868 #ifdef DEBUG
2869     gemu_log(" = %ld\n", ret);
2870 #endif
2871     return ret;
2872 }
2873