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         { TARGET_O_DIRECT,    TARGET_O_DIRECT,    O_DIRECT,    O_DIRECT,    },
1148         { 0, 0, 0, 0 }
1149 };
1150
1151 #if defined(TARGET_I386)
1152
1153 /* NOTE: there is really one LDT for all the threads */
1154 uint8_t *ldt_table;
1155
1156 static int read_ldt(void *ptr, unsigned long bytecount)
1157 {
1158     int size;
1159
1160     if (!ldt_table)
1161         return 0;
1162     size = TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE;
1163     if (size > bytecount)
1164         size = bytecount;
1165     memcpy(ptr, ldt_table, size);
1166     return size;
1167 }
1168
1169 /* XXX: add locking support */
1170 static int write_ldt(CPUX86State *env,
1171                      void *ptr, unsigned long bytecount, int oldmode)
1172 {
1173     struct target_modify_ldt_ldt_s ldt_info;
1174     int seg_32bit, contents, read_exec_only, limit_in_pages;
1175     int seg_not_present, useable;
1176     uint32_t *lp, entry_1, entry_2;
1177
1178     if (bytecount != sizeof(ldt_info))
1179         return -EINVAL;
1180     memcpy(&ldt_info, ptr, sizeof(ldt_info));
1181     tswap32s(&ldt_info.entry_number);
1182     tswapls((long *)&ldt_info.base_addr);
1183     tswap32s(&ldt_info.limit);
1184     tswap32s(&ldt_info.flags);
1185
1186     if (ldt_info.entry_number >= TARGET_LDT_ENTRIES)
1187         return -EINVAL;
1188     seg_32bit = ldt_info.flags & 1;
1189     contents = (ldt_info.flags >> 1) & 3;
1190     read_exec_only = (ldt_info.flags >> 3) & 1;
1191     limit_in_pages = (ldt_info.flags >> 4) & 1;
1192     seg_not_present = (ldt_info.flags >> 5) & 1;
1193     useable = (ldt_info.flags >> 6) & 1;
1194
1195     if (contents == 3) {
1196         if (oldmode)
1197             return -EINVAL;
1198         if (seg_not_present == 0)
1199             return -EINVAL;
1200     }
1201     /* allocate the LDT */
1202     if (!ldt_table) {
1203         ldt_table = malloc(TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE);
1204         if (!ldt_table)
1205             return -ENOMEM;
1206         memset(ldt_table, 0, TARGET_LDT_ENTRIES * TARGET_LDT_ENTRY_SIZE);
1207         env->ldt.base = ldt_table;
1208         env->ldt.limit = 0xffff;
1209     }
1210
1211     /* NOTE: same code as Linux kernel */
1212     /* Allow LDTs to be cleared by the user. */
1213     if (ldt_info.base_addr == 0 && ldt_info.limit == 0) {
1214         if (oldmode ||
1215             (contents == 0              &&
1216              read_exec_only == 1        &&
1217              seg_32bit == 0             &&
1218              limit_in_pages == 0        &&
1219              seg_not_present == 1       &&
1220              useable == 0 )) {
1221             entry_1 = 0;
1222             entry_2 = 0;
1223             goto install;
1224         }
1225     }
1226
1227     entry_1 = ((ldt_info.base_addr & 0x0000ffff) << 16) |
1228         (ldt_info.limit & 0x0ffff);
1229     entry_2 = (ldt_info.base_addr & 0xff000000) |
1230         ((ldt_info.base_addr & 0x00ff0000) >> 16) |
1231         (ldt_info.limit & 0xf0000) |
1232         ((read_exec_only ^ 1) << 9) |
1233         (contents << 10) |
1234         ((seg_not_present ^ 1) << 15) |
1235         (seg_32bit << 22) |
1236         (limit_in_pages << 23) |
1237         0x7000;
1238     if (!oldmode)
1239         entry_2 |= (useable << 20);
1240
1241     /* Install the new entry ...  */
1242 install:
1243     lp = (uint32_t *)(ldt_table + (ldt_info.entry_number << 3));
1244     lp[0] = tswap32(entry_1);
1245     lp[1] = tswap32(entry_2);
1246     return 0;
1247 }
1248
1249 /* specific and weird i386 syscalls */
1250 int do_modify_ldt(CPUX86State *env, int func, void *ptr, unsigned long bytecount)
1251 {
1252     int ret = -ENOSYS;
1253
1254     switch (func) {
1255     case 0:
1256         ret = read_ldt(ptr, bytecount);
1257         break;
1258     case 1:
1259         ret = write_ldt(env, ptr, bytecount, 1);
1260         break;
1261     case 0x11:
1262         ret = write_ldt(env, ptr, bytecount, 0);
1263         break;
1264     }
1265     return ret;
1266 }
1267
1268 #endif /* defined(TARGET_I386) */
1269
1270 /* this stack is the equivalent of the kernel stack associated with a
1271    thread/process */
1272 #define NEW_STACK_SIZE 8192
1273
1274 static int clone_func(void *arg)
1275 {
1276     CPUState *env = arg;
1277     cpu_loop(env);
1278     /* never exits */
1279     return 0;
1280 }
1281
1282 int do_fork(CPUState *env, unsigned int flags, unsigned long newsp)
1283 {
1284     int ret;
1285     TaskState *ts;
1286     uint8_t *new_stack;
1287     CPUState *new_env;
1288
1289     if (flags & CLONE_VM) {
1290         ts = malloc(sizeof(TaskState) + NEW_STACK_SIZE);
1291         memset(ts, 0, sizeof(TaskState));
1292         new_stack = ts->stack;
1293         ts->used = 1;
1294         /* add in task state list */
1295         ts->next = first_task_state;
1296         first_task_state = ts;
1297         /* we create a new CPU instance. */
1298         new_env = cpu_init();
1299         memcpy(new_env, env, sizeof(CPUState));
1300 #if defined(TARGET_I386)
1301         if (!newsp)
1302             newsp = env->regs[R_ESP];
1303         new_env->regs[R_ESP] = newsp;
1304         new_env->regs[R_EAX] = 0;
1305 #elif defined(TARGET_ARM)
1306         if (!newsp)
1307             newsp = env->regs[13];
1308         new_env->regs[13] = newsp;
1309         new_env->regs[0] = 0;
1310 #elif defined(TARGET_SPARC)
1311         printf ("HELPME: %s:%d\n", __FILE__, __LINE__);
1312 #elif defined(TARGET_PPC)
1313         if (!newsp)
1314             newsp = env->gpr[1];
1315         new_env->gpr[1] = newsp;
1316         {
1317             int i;
1318             for (i = 7; i < 32; i++)
1319                 new_env->gpr[i] = 0;
1320         }
1321 #else
1322 #error unsupported target CPU
1323 #endif
1324         new_env->opaque = ts;
1325 #ifdef __ia64__
1326         ret = clone2(clone_func, new_stack + NEW_STACK_SIZE, flags, new_env);
1327 #else
1328         ret = clone(clone_func, new_stack + NEW_STACK_SIZE, flags, new_env);
1329 #endif
1330     } else {
1331         /* if no CLONE_VM, we consider it is a fork */
1332         if ((flags & ~CSIGNAL) != 0)
1333             return -EINVAL;
1334         ret = fork();
1335     }
1336     return ret;
1337 }
1338
1339 static long do_fcntl(int fd, int cmd, unsigned long arg)
1340 {
1341     struct flock fl;
1342     struct target_flock *target_fl = (void *)arg;
1343     long ret;
1344
1345     switch(cmd) {
1346     case TARGET_F_GETLK:
1347         ret = fcntl(fd, cmd, &fl);
1348         if (ret == 0) {
1349             target_fl->l_type = tswap16(fl.l_type);
1350             target_fl->l_whence = tswap16(fl.l_whence);
1351             target_fl->l_start = tswapl(fl.l_start);
1352             target_fl->l_len = tswapl(fl.l_len);
1353             target_fl->l_pid = tswapl(fl.l_pid);
1354         }
1355         break;
1356
1357     case TARGET_F_SETLK:
1358     case TARGET_F_SETLKW:
1359         fl.l_type = tswap16(target_fl->l_type);
1360         fl.l_whence = tswap16(target_fl->l_whence);
1361         fl.l_start = tswapl(target_fl->l_start);
1362         fl.l_len = tswapl(target_fl->l_len);
1363         fl.l_pid = tswapl(target_fl->l_pid);
1364         ret = fcntl(fd, cmd, &fl);
1365         break;
1366
1367     case TARGET_F_GETLK64:
1368     case TARGET_F_SETLK64:
1369     case TARGET_F_SETLKW64:
1370         ret = -1;
1371         errno = EINVAL;
1372         break;
1373
1374     case F_GETFL:
1375         ret = fcntl(fd, cmd, arg);
1376         ret = host_to_target_bitmask(ret, fcntl_flags_tbl);
1377         break;
1378
1379     case F_SETFL:
1380         ret = fcntl(fd, cmd, target_to_host_bitmask(arg, fcntl_flags_tbl));
1381         break;
1382
1383     default:
1384         ret = fcntl(fd, cmd, arg);
1385         break;
1386     }
1387     return ret;
1388 }
1389
1390 #ifdef USE_UID16
1391
1392 static inline int high2lowuid(int uid)
1393 {
1394     if (uid > 65535)
1395         return 65534;
1396     else
1397         return uid;
1398 }
1399
1400 static inline int high2lowgid(int gid)
1401 {
1402     if (gid > 65535)
1403         return 65534;
1404     else
1405         return gid;
1406 }
1407
1408 static inline int low2highuid(int uid)
1409 {
1410     if ((int16_t)uid == -1)
1411         return -1;
1412     else
1413         return uid;
1414 }
1415
1416 static inline int low2highgid(int gid)
1417 {
1418     if ((int16_t)gid == -1)
1419         return -1;
1420     else
1421         return gid;
1422 }
1423
1424 #endif /* USE_UID16 */
1425
1426 void syscall_init(void)
1427 {
1428     IOCTLEntry *ie;
1429     const argtype *arg_type;
1430     int size;
1431
1432 #define STRUCT(name, list...) thunk_register_struct(STRUCT_ ## name, #name, struct_ ## name ## _def);
1433 #define STRUCT_SPECIAL(name) thunk_register_struct_direct(STRUCT_ ## name, #name, &struct_ ## name ## _def);
1434 #include "syscall_types.h"
1435 #undef STRUCT
1436 #undef STRUCT_SPECIAL
1437
1438     /* we patch the ioctl size if necessary. We rely on the fact that
1439        no ioctl has all the bits at '1' in the size field */
1440     ie = ioctl_entries;
1441     while (ie->target_cmd != 0) {
1442         if (((ie->target_cmd >> TARGET_IOC_SIZESHIFT) & TARGET_IOC_SIZEMASK) ==
1443             TARGET_IOC_SIZEMASK) {
1444             arg_type = ie->arg_type;
1445             if (arg_type[0] != TYPE_PTR) {
1446                 fprintf(stderr, "cannot patch size for ioctl 0x%x\n",
1447                         ie->target_cmd);
1448                 exit(1);
1449             }
1450             arg_type++;
1451             size = thunk_type_size(arg_type, 0);
1452             ie->target_cmd = (ie->target_cmd &
1453                               ~(TARGET_IOC_SIZEMASK << TARGET_IOC_SIZESHIFT)) |
1454                 (size << TARGET_IOC_SIZESHIFT);
1455         }
1456         /* automatic consistency check if same arch */
1457 #if defined(__i386__) && defined(TARGET_I386)
1458         if (ie->target_cmd != ie->host_cmd) {
1459             fprintf(stderr, "ERROR: ioctl: target=0x%x host=0x%x\n",
1460                     ie->target_cmd, ie->host_cmd);
1461         }
1462 #endif
1463         ie++;
1464     }
1465 }
1466
1467 long do_syscall(void *cpu_env, int num, long arg1, long arg2, long arg3,
1468                 long arg4, long arg5, long arg6)
1469 {
1470     long ret;
1471     struct stat st;
1472     struct kernel_statfs *stfs;
1473
1474 #ifdef DEBUG
1475     gemu_log("syscall %d", num);
1476 #endif
1477     switch(num) {
1478     case TARGET_NR_exit:
1479 #ifdef HAVE_GPROF
1480         _mcleanup();
1481 #endif
1482         /* XXX: should free thread stack and CPU env */
1483         _exit(arg1);
1484         ret = 0; /* avoid warning */
1485         break;
1486     case TARGET_NR_read:
1487         page_unprotect_range((void *)arg2, arg3);
1488         ret = get_errno(read(arg1, (void *)arg2, arg3));
1489         break;
1490     case TARGET_NR_write:
1491         ret = get_errno(write(arg1, (void *)arg2, arg3));
1492         break;
1493     case TARGET_NR_open:
1494         ret = get_errno(open(path((const char *)arg1),
1495                              target_to_host_bitmask(arg2, fcntl_flags_tbl),
1496                              arg3));
1497         break;
1498     case TARGET_NR_close:
1499         ret = get_errno(close(arg1));
1500         break;
1501     case TARGET_NR_brk:
1502         ret = do_brk((char *)arg1);
1503         break;
1504     case TARGET_NR_fork:
1505         ret = get_errno(do_fork(cpu_env, SIGCHLD, 0));
1506         break;
1507     case TARGET_NR_waitpid:
1508         {
1509             int *status = (int *)arg2;
1510             ret = get_errno(waitpid(arg1, status, arg3));
1511             if (!is_error(ret) && status)
1512                 tswapls((long *)&status);
1513         }
1514         break;
1515     case TARGET_NR_creat:
1516         ret = get_errno(creat((const char *)arg1, arg2));
1517         break;
1518     case TARGET_NR_link:
1519         ret = get_errno(link((const char *)arg1, (const char *)arg2));
1520         break;
1521     case TARGET_NR_unlink:
1522         ret = get_errno(unlink((const char *)arg1));
1523         break;
1524     case TARGET_NR_execve:
1525         {
1526             char **argp, **envp;
1527             int argc, envc;
1528             uint32_t *p;
1529             char **q;
1530
1531             argc = 0;
1532             for (p = (void *)arg2; *p; p++)
1533                 argc++;
1534             envc = 0;
1535             for (p = (void *)arg3; *p; p++)
1536                 envc++;
1537
1538             argp = alloca((argc + 1) * sizeof(void *));
1539             envp = alloca((envc + 1) * sizeof(void *));
1540
1541             for (p = (void *)arg2, q = argp; *p; p++, q++)
1542                 *q = (void *)tswap32(*p);
1543             *q = NULL;
1544
1545             for (p = (void *)arg3, q = envp; *p; p++, q++)
1546                 *q = (void *)tswap32(*p);
1547             *q = NULL;
1548
1549             ret = get_errno(execve((const char *)arg1, argp, envp));
1550         }
1551         break;
1552     case TARGET_NR_chdir:
1553         ret = get_errno(chdir((const char *)arg1));
1554         break;
1555     case TARGET_NR_time:
1556         {
1557             int *time_ptr = (int *)arg1;
1558             ret = get_errno(time((time_t *)time_ptr));
1559             if (!is_error(ret) && time_ptr)
1560                 tswap32s(time_ptr);
1561         }
1562         break;
1563     case TARGET_NR_mknod:
1564         ret = get_errno(mknod((const char *)arg1, arg2, arg3));
1565         break;
1566     case TARGET_NR_chmod:
1567         ret = get_errno(chmod((const char *)arg1, arg2));
1568         break;
1569 #ifdef TARGET_NR_break
1570     case TARGET_NR_break:
1571         goto unimplemented;
1572 #endif
1573 #ifdef TARGET_NR_oldstat
1574     case TARGET_NR_oldstat:
1575         goto unimplemented;
1576 #endif
1577     case TARGET_NR_lseek:
1578         ret = get_errno(lseek(arg1, arg2, arg3));
1579         break;
1580     case TARGET_NR_getpid:
1581         ret = get_errno(getpid());
1582         break;
1583     case TARGET_NR_mount:
1584         /* need to look at the data field */
1585         goto unimplemented;
1586     case TARGET_NR_umount:
1587         ret = get_errno(umount((const char *)arg1));
1588         break;
1589     case TARGET_NR_stime:
1590         {
1591             int *time_ptr = (int *)arg1;
1592             if (time_ptr)
1593                 tswap32s(time_ptr);
1594             ret = get_errno(stime((time_t *)time_ptr));
1595         }
1596         break;
1597     case TARGET_NR_ptrace:
1598         goto unimplemented;
1599     case TARGET_NR_alarm:
1600         ret = alarm(arg1);
1601         break;
1602 #ifdef TARGET_NR_oldfstat
1603     case TARGET_NR_oldfstat:
1604         goto unimplemented;
1605 #endif
1606     case TARGET_NR_pause:
1607         ret = get_errno(pause());
1608         break;
1609     case TARGET_NR_utime:
1610         {
1611             struct utimbuf tbuf;
1612             struct target_utimbuf *target_tbuf = (void *)arg2;
1613             tbuf.actime = tswapl(target_tbuf->actime);
1614             tbuf.modtime = tswapl(target_tbuf->modtime);
1615             ret = get_errno(utime((const char *)arg1, &tbuf));
1616         }
1617         break;
1618 #ifdef TARGET_NR_stty
1619     case TARGET_NR_stty:
1620         goto unimplemented;
1621 #endif
1622 #ifdef TARGET_NR_gtty
1623     case TARGET_NR_gtty:
1624         goto unimplemented;
1625 #endif
1626     case TARGET_NR_access:
1627         ret = get_errno(access((const char *)arg1, arg2));
1628         break;
1629     case TARGET_NR_nice:
1630         ret = get_errno(nice(arg1));
1631         break;
1632 #ifdef TARGET_NR_ftime
1633     case TARGET_NR_ftime:
1634         goto unimplemented;
1635 #endif
1636     case TARGET_NR_sync:
1637         sync();
1638         ret = 0;
1639         break;
1640     case TARGET_NR_kill:
1641         ret = get_errno(kill(arg1, arg2));
1642         break;
1643     case TARGET_NR_rename:
1644         ret = get_errno(rename((const char *)arg1, (const char *)arg2));
1645         break;
1646     case TARGET_NR_mkdir:
1647         ret = get_errno(mkdir((const char *)arg1, arg2));
1648         break;
1649     case TARGET_NR_rmdir:
1650         ret = get_errno(rmdir((const char *)arg1));
1651         break;
1652     case TARGET_NR_dup:
1653         ret = get_errno(dup(arg1));
1654         break;
1655     case TARGET_NR_pipe:
1656         {
1657             int *pipe_ptr = (int *)arg1;
1658             ret = get_errno(pipe(pipe_ptr));
1659             if (!is_error(ret)) {
1660                 tswap32s(&pipe_ptr[0]);
1661                 tswap32s(&pipe_ptr[1]);
1662             }
1663         }
1664         break;
1665     case TARGET_NR_times:
1666         {
1667             struct target_tms *tmsp = (void *)arg1;
1668             struct tms tms;
1669             ret = get_errno(times(&tms));
1670             if (tmsp) {
1671                 tmsp->tms_utime = tswapl(host_to_target_clock_t(tms.tms_utime));
1672                 tmsp->tms_stime = tswapl(host_to_target_clock_t(tms.tms_stime));
1673                 tmsp->tms_cutime = tswapl(host_to_target_clock_t(tms.tms_cutime));
1674                 tmsp->tms_cstime = tswapl(host_to_target_clock_t(tms.tms_cstime));
1675             }
1676             if (!is_error(ret))
1677                 ret = host_to_target_clock_t(ret);
1678         }
1679         break;
1680 #ifdef TARGET_NR_prof
1681     case TARGET_NR_prof:
1682         goto unimplemented;
1683 #endif
1684     case TARGET_NR_signal:
1685         goto unimplemented;
1686
1687     case TARGET_NR_acct:
1688         goto unimplemented;
1689     case TARGET_NR_umount2:
1690         ret = get_errno(umount2((const char *)arg1, arg2));
1691         break;
1692 #ifdef TARGET_NR_lock
1693     case TARGET_NR_lock:
1694         goto unimplemented;
1695 #endif
1696     case TARGET_NR_ioctl:
1697         ret = do_ioctl(arg1, arg2, arg3);
1698         break;
1699     case TARGET_NR_fcntl:
1700         ret = get_errno(do_fcntl(arg1, arg2, arg3));
1701         break;
1702 #ifdef TARGET_NR_mpx
1703     case TARGET_NR_mpx:
1704         goto unimplemented;
1705 #endif
1706     case TARGET_NR_setpgid:
1707         ret = get_errno(setpgid(arg1, arg2));
1708         break;
1709 #ifdef TARGET_NR_ulimit
1710     case TARGET_NR_ulimit:
1711         goto unimplemented;
1712 #endif
1713 #ifdef TARGET_NR_oldolduname
1714     case TARGET_NR_oldolduname:
1715         goto unimplemented;
1716 #endif
1717     case TARGET_NR_umask:
1718         ret = get_errno(umask(arg1));
1719         break;
1720     case TARGET_NR_chroot:
1721         ret = get_errno(chroot((const char *)arg1));
1722         break;
1723     case TARGET_NR_ustat:
1724         goto unimplemented;
1725     case TARGET_NR_dup2:
1726         ret = get_errno(dup2(arg1, arg2));
1727         break;
1728     case TARGET_NR_getppid:
1729         ret = get_errno(getppid());
1730         break;
1731     case TARGET_NR_getpgrp:
1732         ret = get_errno(getpgrp());
1733         break;
1734     case TARGET_NR_setsid:
1735         ret = get_errno(setsid());
1736         break;
1737     case TARGET_NR_sigaction:
1738         {
1739             struct target_old_sigaction *old_act = (void *)arg2;
1740             struct target_old_sigaction *old_oact = (void *)arg3;
1741             struct target_sigaction act, oact, *pact;
1742             if (old_act) {
1743                 act._sa_handler = old_act->_sa_handler;
1744                 target_siginitset(&act.sa_mask, old_act->sa_mask);
1745                 act.sa_flags = old_act->sa_flags;
1746                 act.sa_restorer = old_act->sa_restorer;
1747                 pact = &act;
1748             } else {
1749                 pact = NULL;
1750             }
1751             ret = get_errno(do_sigaction(arg1, pact, &oact));
1752             if (!is_error(ret) && old_oact) {
1753                 old_oact->_sa_handler = oact._sa_handler;
1754                 old_oact->sa_mask = oact.sa_mask.sig[0];
1755                 old_oact->sa_flags = oact.sa_flags;
1756                 old_oact->sa_restorer = oact.sa_restorer;
1757             }
1758         }
1759         break;
1760     case TARGET_NR_rt_sigaction:
1761         ret = get_errno(do_sigaction(arg1, (void *)arg2, (void *)arg3));
1762         break;
1763     case TARGET_NR_sgetmask:
1764         {
1765             sigset_t cur_set;
1766             target_ulong target_set;
1767             sigprocmask(0, NULL, &cur_set);
1768             host_to_target_old_sigset(&target_set, &cur_set);
1769             ret = target_set;
1770         }
1771         break;
1772     case TARGET_NR_ssetmask:
1773         {
1774             sigset_t set, oset, cur_set;
1775             target_ulong target_set = arg1;
1776             sigprocmask(0, NULL, &cur_set);
1777             target_to_host_old_sigset(&set, &target_set);
1778             sigorset(&set, &set, &cur_set);
1779             sigprocmask(SIG_SETMASK, &set, &oset);
1780             host_to_target_old_sigset(&target_set, &oset);
1781             ret = target_set;
1782         }
1783         break;
1784     case TARGET_NR_sigprocmask:
1785         {
1786             int how = arg1;
1787             sigset_t set, oldset, *set_ptr;
1788             target_ulong *pset = (void *)arg2, *poldset = (void *)arg3;
1789
1790             if (pset) {
1791                 switch(how) {
1792                 case TARGET_SIG_BLOCK:
1793                     how = SIG_BLOCK;
1794                     break;
1795                 case TARGET_SIG_UNBLOCK:
1796                     how = SIG_UNBLOCK;
1797                     break;
1798                 case TARGET_SIG_SETMASK:
1799                     how = SIG_SETMASK;
1800                     break;
1801                 default:
1802                     ret = -EINVAL;
1803                     goto fail;
1804                 }
1805                 target_to_host_old_sigset(&set, pset);
1806                 set_ptr = &set;
1807             } else {
1808                 how = 0;
1809                 set_ptr = NULL;
1810             }
1811             ret = get_errno(sigprocmask(arg1, set_ptr, &oldset));
1812             if (!is_error(ret) && poldset) {
1813                 host_to_target_old_sigset(poldset, &oldset);
1814             }
1815         }
1816         break;
1817     case TARGET_NR_rt_sigprocmask:
1818         {
1819             int how = arg1;
1820             sigset_t set, oldset, *set_ptr;
1821             target_sigset_t *pset = (void *)arg2;
1822             target_sigset_t *poldset = (void *)arg3;
1823
1824             if (pset) {
1825                 switch(how) {
1826                 case TARGET_SIG_BLOCK:
1827                     how = SIG_BLOCK;
1828                     break;
1829                 case TARGET_SIG_UNBLOCK:
1830                     how = SIG_UNBLOCK;
1831                     break;
1832                 case TARGET_SIG_SETMASK:
1833                     how = SIG_SETMASK;
1834                     break;
1835                 default:
1836                     ret = -EINVAL;
1837                     goto fail;
1838                 }
1839                 target_to_host_sigset(&set, pset);
1840                 set_ptr = &set;
1841             } else {
1842                 how = 0;
1843                 set_ptr = NULL;
1844             }
1845             ret = get_errno(sigprocmask(how, set_ptr, &oldset));
1846             if (!is_error(ret) && poldset) {
1847                 host_to_target_sigset(poldset, &oldset);
1848             }
1849         }
1850         break;
1851     case TARGET_NR_sigpending:
1852         {
1853             sigset_t set;
1854             ret = get_errno(sigpending(&set));
1855             if (!is_error(ret)) {
1856                 host_to_target_old_sigset((target_ulong *)arg1, &set);
1857             }
1858         }
1859         break;
1860     case TARGET_NR_rt_sigpending:
1861         {
1862             sigset_t set;
1863             ret = get_errno(sigpending(&set));
1864             if (!is_error(ret)) {
1865                 host_to_target_sigset((target_sigset_t *)arg1, &set);
1866             }
1867         }
1868         break;
1869     case TARGET_NR_sigsuspend:
1870         {
1871             sigset_t set;
1872             target_to_host_old_sigset(&set, (target_ulong *)arg1);
1873             ret = get_errno(sigsuspend(&set));
1874         }
1875         break;
1876     case TARGET_NR_rt_sigsuspend:
1877         {
1878             sigset_t set;
1879             target_to_host_sigset(&set, (target_sigset_t *)arg1);
1880             ret = get_errno(sigsuspend(&set));
1881         }
1882         break;
1883     case TARGET_NR_rt_sigtimedwait:
1884         {
1885             target_sigset_t *target_set = (void *)arg1;
1886             target_siginfo_t *target_uinfo = (void *)arg2;
1887             struct target_timespec *target_uts = (void *)arg3;
1888             sigset_t set;
1889             struct timespec uts, *puts;
1890             siginfo_t uinfo;
1891
1892             target_to_host_sigset(&set, target_set);
1893             if (target_uts) {
1894                 puts = &uts;
1895                 puts->tv_sec = tswapl(target_uts->tv_sec);
1896                 puts->tv_nsec = tswapl(target_uts->tv_nsec);
1897             } else {
1898                 puts = NULL;
1899             }
1900             ret = get_errno(sigtimedwait(&set, &uinfo, puts));
1901             if (!is_error(ret) && target_uinfo) {
1902                 host_to_target_siginfo(target_uinfo, &uinfo);
1903             }
1904         }
1905         break;
1906     case TARGET_NR_rt_sigqueueinfo:
1907         {
1908             siginfo_t uinfo;
1909             target_to_host_siginfo(&uinfo, (target_siginfo_t *)arg3);
1910             ret = get_errno(sys_rt_sigqueueinfo(arg1, arg2, &uinfo));
1911         }
1912         break;
1913     case TARGET_NR_sigreturn:
1914         /* NOTE: ret is eax, so not transcoding must be done */
1915         ret = do_sigreturn(cpu_env);
1916         break;
1917     case TARGET_NR_rt_sigreturn:
1918         /* NOTE: ret is eax, so not transcoding must be done */
1919         ret = do_rt_sigreturn(cpu_env);
1920         break;
1921     case TARGET_NR_sethostname:
1922         ret = get_errno(sethostname((const char *)arg1, arg2));
1923         break;
1924     case TARGET_NR_setrlimit:
1925         {
1926             /* XXX: convert resource ? */
1927             int resource = arg1;
1928             struct target_rlimit *target_rlim = (void *)arg2;
1929             struct rlimit rlim;
1930             rlim.rlim_cur = tswapl(target_rlim->rlim_cur);
1931             rlim.rlim_max = tswapl(target_rlim->rlim_max);
1932             ret = get_errno(setrlimit(resource, &rlim));
1933         }
1934         break;
1935     case TARGET_NR_getrlimit:
1936         {
1937             /* XXX: convert resource ? */
1938             int resource = arg1;
1939             struct target_rlimit *target_rlim = (void *)arg2;
1940             struct rlimit rlim;
1941
1942             ret = get_errno(getrlimit(resource, &rlim));
1943             if (!is_error(ret)) {
1944                 target_rlim->rlim_cur = tswapl(rlim.rlim_cur);
1945                 target_rlim->rlim_max = tswapl(rlim.rlim_max);
1946             }
1947         }
1948         break;
1949     case TARGET_NR_getrusage:
1950         {
1951             struct rusage rusage;
1952             struct target_rusage *target_rusage = (void *)arg2;
1953             ret = get_errno(getrusage(arg1, &rusage));
1954             if (!is_error(ret)) {
1955                 host_to_target_rusage(target_rusage, &rusage);
1956             }
1957         }
1958         break;
1959     case TARGET_NR_gettimeofday:
1960         {
1961             struct target_timeval *target_tv = (void *)arg1;
1962             struct timeval tv;
1963             ret = get_errno(gettimeofday(&tv, NULL));
1964             if (!is_error(ret)) {
1965                 host_to_target_timeval(target_tv, &tv);
1966             }
1967         }
1968         break;
1969     case TARGET_NR_settimeofday:
1970         {
1971             struct target_timeval *target_tv = (void *)arg1;
1972             struct timeval tv;
1973             target_to_host_timeval(&tv, target_tv);
1974             ret = get_errno(settimeofday(&tv, NULL));
1975         }
1976         break;
1977     case TARGET_NR_select:
1978         {
1979             struct target_sel_arg_struct *sel = (void *)arg1;
1980             sel->n = tswapl(sel->n);
1981             sel->inp = tswapl(sel->inp);
1982             sel->outp = tswapl(sel->outp);
1983             sel->exp = tswapl(sel->exp);
1984             sel->tvp = tswapl(sel->tvp);
1985             ret = do_select(sel->n, (void *)sel->inp, (void *)sel->outp,
1986                             (void *)sel->exp, (void *)sel->tvp);
1987         }
1988         break;
1989     case TARGET_NR_symlink:
1990         ret = get_errno(symlink((const char *)arg1, (const char *)arg2));
1991         break;
1992 #ifdef TARGET_NR_oldlstat
1993     case TARGET_NR_oldlstat:
1994         goto unimplemented;
1995 #endif
1996     case TARGET_NR_readlink:
1997         ret = get_errno(readlink(path((const char *)arg1), (char *)arg2, arg3));
1998         break;
1999     case TARGET_NR_uselib:
2000         goto unimplemented;
2001     case TARGET_NR_swapon:
2002         ret = get_errno(swapon((const char *)arg1, arg2));
2003         break;
2004     case TARGET_NR_reboot:
2005         goto unimplemented;
2006     case TARGET_NR_readdir:
2007         goto unimplemented;
2008     case TARGET_NR_mmap:
2009 #if defined(TARGET_I386) || defined(TARGET_ARM)
2010         {
2011             uint32_t v1, v2, v3, v4, v5, v6, *vptr;
2012             vptr = (uint32_t *)arg1;
2013             v1 = tswap32(vptr[0]);
2014             v2 = tswap32(vptr[1]);
2015             v3 = tswap32(vptr[2]);
2016             v4 = tswap32(vptr[3]);
2017             v5 = tswap32(vptr[4]);
2018             v6 = tswap32(vptr[5]);
2019             ret = get_errno(target_mmap(v1, v2, v3,
2020                                         target_to_host_bitmask(v4, mmap_flags_tbl),
2021                                         v5, v6));
2022         }
2023 #else
2024         ret = get_errno(target_mmap(arg1, arg2, arg3,
2025                                     target_to_host_bitmask(arg4, mmap_flags_tbl),
2026                                     arg5,
2027                                     arg6));
2028 #endif
2029         break;
2030     case TARGET_NR_mmap2:
2031 #if defined(TARGET_SPARC)
2032 #define MMAP_SHIFT 12
2033 #else
2034 #define MMAP_SHIFT TARGET_PAGE_BITS
2035 #endif
2036         ret = get_errno(target_mmap(arg1, arg2, arg3,
2037                                     target_to_host_bitmask(arg4, mmap_flags_tbl),
2038                                     arg5,
2039                                     arg6 << MMAP_SHIFT));
2040         break;
2041     case TARGET_NR_munmap:
2042         ret = get_errno(target_munmap(arg1, arg2));
2043         break;
2044     case TARGET_NR_mprotect:
2045         ret = get_errno(target_mprotect(arg1, arg2, arg3));
2046         break;
2047     case TARGET_NR_mremap:
2048         ret = get_errno(target_mremap(arg1, arg2, arg3, arg4, arg5));
2049         break;
2050     case TARGET_NR_msync:
2051         ret = get_errno(msync((void *)arg1, arg2, arg3));
2052         break;
2053     case TARGET_NR_mlock:
2054         ret = get_errno(mlock((void *)arg1, arg2));
2055         break;
2056     case TARGET_NR_munlock:
2057         ret = get_errno(munlock((void *)arg1, arg2));
2058         break;
2059     case TARGET_NR_mlockall:
2060         ret = get_errno(mlockall(arg1));
2061         break;
2062     case TARGET_NR_munlockall:
2063         ret = get_errno(munlockall());
2064         break;
2065     case TARGET_NR_truncate:
2066         ret = get_errno(truncate((const char *)arg1, arg2));
2067         break;
2068     case TARGET_NR_ftruncate:
2069         ret = get_errno(ftruncate(arg1, arg2));
2070         break;
2071     case TARGET_NR_fchmod:
2072         ret = get_errno(fchmod(arg1, arg2));
2073         break;
2074     case TARGET_NR_getpriority:
2075         ret = get_errno(getpriority(arg1, arg2));
2076         break;
2077     case TARGET_NR_setpriority:
2078         ret = get_errno(setpriority(arg1, arg2, arg3));
2079         break;
2080 #ifdef TARGET_NR_profil
2081     case TARGET_NR_profil:
2082         goto unimplemented;
2083 #endif
2084     case TARGET_NR_statfs:
2085         stfs = (void *)arg2;
2086         ret = get_errno(sys_statfs(path((const char *)arg1), stfs));
2087     convert_statfs:
2088         if (!is_error(ret)) {
2089             tswap32s(&stfs->f_type);
2090             tswap32s(&stfs->f_bsize);
2091             tswap32s(&stfs->f_blocks);
2092             tswap32s(&stfs->f_bfree);
2093             tswap32s(&stfs->f_bavail);
2094             tswap32s(&stfs->f_files);
2095             tswap32s(&stfs->f_ffree);
2096             tswap32s(&stfs->f_fsid.val[0]);
2097             tswap32s(&stfs->f_fsid.val[1]);
2098             tswap32s(&stfs->f_namelen);
2099         }
2100         break;
2101     case TARGET_NR_fstatfs:
2102         stfs = (void *)arg2;
2103         ret = get_errno(sys_fstatfs(arg1, stfs));
2104         goto convert_statfs;
2105 #ifdef TARGET_NR_ioperm
2106     case TARGET_NR_ioperm:
2107         goto unimplemented;
2108 #endif
2109     case TARGET_NR_socketcall:
2110         ret = do_socketcall(arg1, (int32_t *)arg2);
2111         break;
2112     case TARGET_NR_syslog:
2113         goto unimplemented;
2114     case TARGET_NR_setitimer:
2115         {
2116             struct target_itimerval *target_value = (void *)arg2;
2117             struct target_itimerval *target_ovalue = (void *)arg3;
2118             struct itimerval value, ovalue, *pvalue;
2119
2120             if (target_value) {
2121                 pvalue = &value;
2122                 target_to_host_timeval(&pvalue->it_interval,
2123                                        &target_value->it_interval);
2124                 target_to_host_timeval(&pvalue->it_value,
2125                                        &target_value->it_value);
2126             } else {
2127                 pvalue = NULL;
2128             }
2129             ret = get_errno(setitimer(arg1, pvalue, &ovalue));
2130             if (!is_error(ret) && target_ovalue) {
2131                 host_to_target_timeval(&target_ovalue->it_interval,
2132                                        &ovalue.it_interval);
2133                 host_to_target_timeval(&target_ovalue->it_value,
2134                                        &ovalue.it_value);
2135             }
2136         }
2137         break;
2138     case TARGET_NR_getitimer:
2139         {
2140             struct target_itimerval *target_value = (void *)arg2;
2141             struct itimerval value;
2142
2143             ret = get_errno(getitimer(arg1, &value));
2144             if (!is_error(ret) && target_value) {
2145                 host_to_target_timeval(&target_value->it_interval,
2146                                        &value.it_interval);
2147                 host_to_target_timeval(&target_value->it_value,
2148                                        &value.it_value);
2149             }
2150         }
2151         break;
2152     case TARGET_NR_stat:
2153         ret = get_errno(stat(path((const char *)arg1), &st));
2154         goto do_stat;
2155     case TARGET_NR_lstat:
2156         ret = get_errno(lstat(path((const char *)arg1), &st));
2157         goto do_stat;
2158     case TARGET_NR_fstat:
2159         {
2160             ret = get_errno(fstat(arg1, &st));
2161         do_stat:
2162             if (!is_error(ret)) {
2163                 struct target_stat *target_st = (void *)arg2;
2164                 target_st->st_dev = tswap16(st.st_dev);
2165                 target_st->st_ino = tswapl(st.st_ino);
2166 #if defined(TARGET_PPC)
2167                 target_st->st_mode = tswapl(st.st_mode); /* XXX: check this */
2168                 target_st->st_uid = tswap32(st.st_uid);
2169                 target_st->st_gid = tswap32(st.st_gid);
2170 #else
2171                 target_st->st_mode = tswap16(st.st_mode);
2172                 target_st->st_uid = tswap16(st.st_uid);
2173                 target_st->st_gid = tswap16(st.st_gid);
2174 #endif
2175                 target_st->st_nlink = tswap16(st.st_nlink);
2176                 target_st->st_rdev = tswap16(st.st_rdev);
2177                 target_st->st_size = tswapl(st.st_size);
2178                 target_st->st_blksize = tswapl(st.st_blksize);
2179                 target_st->st_blocks = tswapl(st.st_blocks);
2180                 target_st->target_st_atime = tswapl(st.st_atime);
2181                 target_st->target_st_mtime = tswapl(st.st_mtime);
2182                 target_st->target_st_ctime = tswapl(st.st_ctime);
2183             }
2184         }
2185         break;
2186 #ifdef TARGET_NR_olduname
2187     case TARGET_NR_olduname:
2188         goto unimplemented;
2189 #endif
2190 #ifdef TARGET_NR_iopl
2191     case TARGET_NR_iopl:
2192         goto unimplemented;
2193 #endif
2194     case TARGET_NR_vhangup:
2195         ret = get_errno(vhangup());
2196         break;
2197 #ifdef TARGET_NR_idle
2198     case TARGET_NR_idle:
2199         goto unimplemented;
2200 #endif
2201     case TARGET_NR_wait4:
2202         {
2203             int status;
2204             target_long *status_ptr = (void *)arg2;
2205             struct rusage rusage, *rusage_ptr;
2206             struct target_rusage *target_rusage = (void *)arg4;
2207             if (target_rusage)
2208                 rusage_ptr = &rusage;
2209             else
2210                 rusage_ptr = NULL;
2211             ret = get_errno(wait4(arg1, &status, arg3, rusage_ptr));
2212             if (!is_error(ret)) {
2213                 if (status_ptr)
2214                     *status_ptr = tswap32(status);
2215                 if (target_rusage) {
2216                     host_to_target_rusage(target_rusage, &rusage);
2217                 }
2218             }
2219         }
2220         break;
2221     case TARGET_NR_swapoff:
2222         ret = get_errno(swapoff((const char *)arg1));
2223         break;
2224     case TARGET_NR_sysinfo:
2225         goto unimplemented;
2226     case TARGET_NR_ipc:
2227         goto unimplemented;
2228     case TARGET_NR_fsync:
2229         ret = get_errno(fsync(arg1));
2230         break;
2231     case TARGET_NR_clone:
2232         ret = get_errno(do_fork(cpu_env, arg1, arg2));
2233         break;
2234 #ifdef __NR_exit_group
2235         /* new thread calls */
2236     case TARGET_NR_exit_group:
2237         ret = get_errno(exit_group(arg1));
2238         break;
2239 #endif
2240     case TARGET_NR_setdomainname:
2241         ret = get_errno(setdomainname((const char *)arg1, arg2));
2242         break;
2243     case TARGET_NR_uname:
2244         /* no need to transcode because we use the linux syscall */
2245         ret = get_errno(sys_uname((struct new_utsname *)arg1));
2246         break;
2247 #ifdef TARGET_I386
2248     case TARGET_NR_modify_ldt:
2249         ret = get_errno(do_modify_ldt(cpu_env, arg1, (void *)arg2, arg3));
2250         break;
2251     case TARGET_NR_vm86old:
2252         goto unimplemented;
2253     case TARGET_NR_vm86:
2254         ret = do_vm86(cpu_env, arg1, (void *)arg2);
2255         break;
2256 #endif
2257     case TARGET_NR_adjtimex:
2258         goto unimplemented;
2259     case TARGET_NR_create_module:
2260     case TARGET_NR_init_module:
2261     case TARGET_NR_delete_module:
2262     case TARGET_NR_get_kernel_syms:
2263         goto unimplemented;
2264     case TARGET_NR_quotactl:
2265         goto unimplemented;
2266     case TARGET_NR_getpgid:
2267         ret = get_errno(getpgid(arg1));
2268         break;
2269     case TARGET_NR_fchdir:
2270         ret = get_errno(fchdir(arg1));
2271         break;
2272     case TARGET_NR_bdflush:
2273         goto unimplemented;
2274     case TARGET_NR_sysfs:
2275         goto unimplemented;
2276     case TARGET_NR_personality:
2277         ret = get_errno(personality(arg1));
2278         break;
2279     case TARGET_NR_afs_syscall:
2280         goto unimplemented;
2281     case TARGET_NR__llseek:
2282         {
2283             int64_t res;
2284             ret = get_errno(_llseek(arg1, arg2, arg3, &res, arg5));
2285             *(int64_t *)arg4 = tswap64(res);
2286         }
2287         break;
2288     case TARGET_NR_getdents:
2289 #if TARGET_LONG_SIZE != 4
2290 #error not supported
2291 #elif TARGET_LONG_SIZE == 4 && HOST_LONG_SIZE == 8
2292         {
2293             struct target_dirent *target_dirp = (void *)arg2;
2294             struct dirent *dirp;
2295             long count = arg3;
2296
2297             dirp = malloc(count);
2298             if (!dirp)
2299                 return -ENOMEM;
2300
2301             ret = get_errno(sys_getdents(arg1, dirp, count));
2302             if (!is_error(ret)) {
2303                 struct dirent *de;
2304                 struct target_dirent *tde;
2305                 int len = ret;
2306                 int reclen, treclen;
2307                 int count1, tnamelen;
2308
2309                 count1 = 0;
2310                 de = dirp;
2311                 tde = target_dirp;
2312                 while (len > 0) {
2313                     reclen = de->d_reclen;
2314                     treclen = reclen - (2 * (sizeof(long) - sizeof(target_long)));
2315                     tde->d_reclen = tswap16(treclen);
2316                     tde->d_ino = tswapl(de->d_ino);
2317                     tde->d_off = tswapl(de->d_off);
2318                     tnamelen = treclen - (2 * sizeof(target_long) + 2);
2319                     if (tnamelen > 256)
2320                         tnamelen = 256;
2321                     strncpy(tde->d_name, de->d_name, tnamelen);
2322                     de = (struct dirent *)((char *)de + reclen);
2323                     len -= reclen;
2324                     tde = (struct dirent *)((char *)tde + treclen);
2325                     count1 += treclen;
2326                 }
2327                 ret = count1;
2328             }
2329             free(dirp);
2330         }
2331 #else
2332         {
2333             struct dirent *dirp = (void *)arg2;
2334             long count = arg3;
2335
2336             ret = get_errno(sys_getdents(arg1, dirp, count));
2337             if (!is_error(ret)) {
2338                 struct dirent *de;
2339                 int len = ret;
2340                 int reclen;
2341                 de = dirp;
2342                 while (len > 0) {
2343                     reclen = de->d_reclen;
2344                     if (reclen > len)
2345                         break;
2346                     de->d_reclen = tswap16(reclen);
2347                     tswapls(&de->d_ino);
2348                     tswapls(&de->d_off);
2349                     de = (struct dirent *)((char *)de + reclen);
2350                     len -= reclen;
2351                 }
2352             }
2353         }
2354 #endif
2355         break;
2356     case TARGET_NR_getdents64:
2357         {
2358             struct dirent64 *dirp = (void *)arg2;
2359             long count = arg3;
2360             ret = get_errno(sys_getdents64(arg1, dirp, count));
2361             if (!is_error(ret)) {
2362                 struct dirent64 *de;
2363                 int len = ret;
2364                 int reclen;
2365                 de = dirp;
2366                 while (len > 0) {
2367                     reclen = de->d_reclen;
2368                     if (reclen > len)
2369                         break;
2370                     de->d_reclen = tswap16(reclen);
2371                     tswap64s(&de->d_ino);
2372                     tswap64s(&de->d_off);
2373                     de = (struct dirent64 *)((char *)de + reclen);
2374                     len -= reclen;
2375                 }
2376             }
2377         }
2378         break;
2379     case TARGET_NR__newselect:
2380         ret = do_select(arg1, (void *)arg2, (void *)arg3, (void *)arg4,
2381                         (void *)arg5);
2382         break;
2383     case TARGET_NR_poll:
2384         {
2385             struct target_pollfd *target_pfd = (void *)arg1;
2386             unsigned int nfds = arg2;
2387             int timeout = arg3;
2388             struct pollfd *pfd;
2389             unsigned int i;
2390
2391             pfd = alloca(sizeof(struct pollfd) * nfds);
2392             for(i = 0; i < nfds; i++) {
2393                 pfd[i].fd = tswap32(target_pfd[i].fd);
2394                 pfd[i].events = tswap16(target_pfd[i].events);
2395             }
2396             ret = get_errno(poll(pfd, nfds, timeout));
2397             if (!is_error(ret)) {
2398                 for(i = 0; i < nfds; i++) {
2399                     target_pfd[i].revents = tswap16(pfd[i].revents);
2400                 }
2401             }
2402         }
2403         break;
2404     case TARGET_NR_flock:
2405         /* NOTE: the flock constant seems to be the same for every
2406            Linux platform */
2407         ret = get_errno(flock(arg1, arg2));
2408         break;
2409     case TARGET_NR_readv:
2410         {
2411             int count = arg3;
2412             int i;
2413             struct iovec *vec;
2414             struct target_iovec *target_vec = (void *)arg2;
2415
2416             vec = alloca(count * sizeof(struct iovec));
2417             for(i = 0;i < count; i++) {
2418                 vec[i].iov_base = (void *)tswapl(target_vec[i].iov_base);
2419                 vec[i].iov_len = tswapl(target_vec[i].iov_len);
2420             }
2421             ret = get_errno(readv(arg1, vec, count));
2422         }
2423         break;
2424     case TARGET_NR_writev:
2425         {
2426             int count = arg3;
2427             int i;
2428             struct iovec *vec;
2429             struct target_iovec *target_vec = (void *)arg2;
2430
2431             vec = alloca(count * sizeof(struct iovec));
2432             for(i = 0;i < count; i++) {
2433                 vec[i].iov_base = (void *)tswapl(target_vec[i].iov_base);
2434                 vec[i].iov_len = tswapl(target_vec[i].iov_len);
2435             }
2436             ret = get_errno(writev(arg1, vec, count));
2437         }
2438         break;
2439     case TARGET_NR_getsid:
2440         ret = get_errno(getsid(arg1));
2441         break;
2442     case TARGET_NR_fdatasync:
2443         ret = get_errno(fdatasync(arg1));
2444         break;
2445     case TARGET_NR__sysctl:
2446         goto unimplemented;
2447     case TARGET_NR_sched_setparam:
2448         {
2449             struct sched_param *target_schp = (void *)arg2;
2450             struct sched_param schp;
2451             schp.sched_priority = tswap32(target_schp->sched_priority);
2452             ret = get_errno(sched_setparam(arg1, &schp));
2453         }
2454         break;
2455     case TARGET_NR_sched_getparam:
2456         {
2457             struct sched_param *target_schp = (void *)arg2;
2458             struct sched_param schp;
2459             ret = get_errno(sched_getparam(arg1, &schp));
2460             if (!is_error(ret)) {
2461                 target_schp->sched_priority = tswap32(schp.sched_priority);
2462             }
2463         }
2464         break;
2465     case TARGET_NR_sched_setscheduler:
2466         {
2467             struct sched_param *target_schp = (void *)arg3;
2468             struct sched_param schp;
2469             schp.sched_priority = tswap32(target_schp->sched_priority);
2470             ret = get_errno(sched_setscheduler(arg1, arg2, &schp));
2471         }
2472         break;
2473     case TARGET_NR_sched_getscheduler:
2474         ret = get_errno(sched_getscheduler(arg1));
2475         break;
2476     case TARGET_NR_sched_yield:
2477         ret = get_errno(sched_yield());
2478         break;
2479     case TARGET_NR_sched_get_priority_max:
2480         ret = get_errno(sched_get_priority_max(arg1));
2481         break;
2482     case TARGET_NR_sched_get_priority_min:
2483         ret = get_errno(sched_get_priority_min(arg1));
2484         break;
2485     case TARGET_NR_sched_rr_get_interval:
2486         {
2487             struct target_timespec *target_ts = (void *)arg2;
2488             struct timespec ts;
2489             ret = get_errno(sched_rr_get_interval(arg1, &ts));
2490             if (!is_error(ret)) {
2491                 target_ts->tv_sec = tswapl(ts.tv_sec);
2492                 target_ts->tv_nsec = tswapl(ts.tv_nsec);
2493             }
2494         }
2495         break;
2496     case TARGET_NR_nanosleep:
2497         {
2498             struct target_timespec *target_req = (void *)arg1;
2499             struct target_timespec *target_rem = (void *)arg2;
2500             struct timespec req, rem;
2501             req.tv_sec = tswapl(target_req->tv_sec);
2502             req.tv_nsec = tswapl(target_req->tv_nsec);
2503             ret = get_errno(nanosleep(&req, &rem));
2504             if (is_error(ret) && target_rem) {
2505                 target_rem->tv_sec = tswapl(rem.tv_sec);
2506                 target_rem->tv_nsec = tswapl(rem.tv_nsec);
2507             }
2508         }
2509         break;
2510     case TARGET_NR_query_module:
2511         goto unimplemented;
2512     case TARGET_NR_nfsservctl:
2513         goto unimplemented;
2514     case TARGET_NR_prctl:
2515         goto unimplemented;
2516 #ifdef TARGET_NR_pread
2517     case TARGET_NR_pread:
2518         page_unprotect_range((void *)arg2, arg3);
2519         ret = get_errno(pread(arg1, (void *)arg2, arg3, arg4));
2520         break;
2521     case TARGET_NR_pwrite:
2522         ret = get_errno(pwrite(arg1, (void *)arg2, arg3, arg4));
2523         break;
2524 #endif
2525     case TARGET_NR_getcwd:
2526         ret = get_errno(sys_getcwd1((char *)arg1, arg2));
2527         break;
2528     case TARGET_NR_capget:
2529         goto unimplemented;
2530     case TARGET_NR_capset:
2531         goto unimplemented;
2532     case TARGET_NR_sigaltstack:
2533         goto unimplemented;
2534     case TARGET_NR_sendfile:
2535         goto unimplemented;
2536 #ifdef TARGET_NR_getpmsg
2537     case TARGET_NR_getpmsg:
2538         goto unimplemented;
2539 #endif
2540 #ifdef TARGET_NR_putpmsg
2541     case TARGET_NR_putpmsg:
2542         goto unimplemented;
2543 #endif
2544     case TARGET_NR_vfork:
2545         ret = get_errno(do_fork(cpu_env, CLONE_VFORK | CLONE_VM | SIGCHLD, 0));
2546         break;
2547 #ifdef TARGET_NR_ugetrlimit
2548     case TARGET_NR_ugetrlimit:
2549     {
2550         struct rlimit rlim;
2551         ret = get_errno(getrlimit(arg1, &rlim));
2552         if (!is_error(ret)) {
2553             struct target_rlimit *target_rlim = (void *)arg2;
2554             target_rlim->rlim_cur = tswapl(rlim.rlim_cur);
2555             target_rlim->rlim_max = tswapl(rlim.rlim_max);
2556         }
2557         break;
2558     }
2559 #endif
2560     case TARGET_NR_truncate64:
2561         goto unimplemented;
2562     case TARGET_NR_ftruncate64:
2563         goto unimplemented;
2564     case TARGET_NR_stat64:
2565         ret = get_errno(stat(path((const char *)arg1), &st));
2566         goto do_stat64;
2567     case TARGET_NR_lstat64:
2568         ret = get_errno(lstat(path((const char *)arg1), &st));
2569         goto do_stat64;
2570     case TARGET_NR_fstat64:
2571         {
2572             ret = get_errno(fstat(arg1, &st));
2573         do_stat64:
2574             if (!is_error(ret)) {
2575                 struct target_stat64 *target_st = (void *)arg2;
2576                 memset(target_st, 0, sizeof(struct target_stat64));
2577                 put_user(st.st_dev, &target_st->st_dev);
2578                 put_user(st.st_ino, &target_st->st_ino);
2579 #ifdef TARGET_STAT64_HAS_BROKEN_ST_INO
2580                 put_user(st.st_ino, &target_st->__st_ino);
2581 #endif
2582                 put_user(st.st_mode, &target_st->st_mode);
2583                 put_user(st.st_nlink, &target_st->st_nlink);
2584                 put_user(st.st_uid, &target_st->st_uid);
2585                 put_user(st.st_gid, &target_st->st_gid);
2586                 put_user(st.st_rdev, &target_st->st_rdev);
2587                 /* XXX: better use of kernel struct */
2588                 put_user(st.st_size, &target_st->st_size);
2589                 put_user(st.st_blksize, &target_st->st_blksize);
2590                 put_user(st.st_blocks, &target_st->st_blocks);
2591                 put_user(st.st_atime, &target_st->target_st_atime);
2592                 put_user(st.st_mtime, &target_st->target_st_mtime);
2593                 put_user(st.st_ctime, &target_st->target_st_ctime);
2594             }
2595         }
2596         break;
2597
2598 #ifdef USE_UID16
2599     case TARGET_NR_lchown:
2600         ret = get_errno(lchown((const char *)arg1, low2highuid(arg2), low2highgid(arg3)));
2601         break;
2602     case TARGET_NR_getuid:
2603         ret = get_errno(high2lowuid(getuid()));
2604         break;
2605     case TARGET_NR_getgid:
2606         ret = get_errno(high2lowgid(getgid()));
2607         break;
2608     case TARGET_NR_geteuid:
2609         ret = get_errno(high2lowuid(geteuid()));
2610         break;
2611     case TARGET_NR_getegid:
2612         ret = get_errno(high2lowgid(getegid()));
2613         break;
2614     case TARGET_NR_setreuid:
2615         ret = get_errno(setreuid(low2highuid(arg1), low2highuid(arg2)));
2616         break;
2617     case TARGET_NR_setregid:
2618         ret = get_errno(setregid(low2highgid(arg1), low2highgid(arg2)));
2619         break;
2620     case TARGET_NR_getgroups:
2621         {
2622             int gidsetsize = arg1;
2623             uint16_t *target_grouplist = (void *)arg2;
2624             gid_t *grouplist;
2625             int i;
2626
2627             grouplist = alloca(gidsetsize * sizeof(gid_t));
2628             ret = get_errno(getgroups(gidsetsize, grouplist));
2629             if (!is_error(ret)) {
2630                 for(i = 0;i < gidsetsize; i++)
2631                     target_grouplist[i] = tswap16(grouplist[i]);
2632             }
2633         }
2634         break;
2635     case TARGET_NR_setgroups:
2636         {
2637             int gidsetsize = arg1;
2638             uint16_t *target_grouplist = (void *)arg2;
2639             gid_t *grouplist;
2640             int i;
2641
2642             grouplist = alloca(gidsetsize * sizeof(gid_t));
2643             for(i = 0;i < gidsetsize; i++)
2644                 grouplist[i] = tswap16(target_grouplist[i]);
2645             ret = get_errno(setgroups(gidsetsize, grouplist));
2646         }
2647         break;
2648     case TARGET_NR_fchown:
2649         ret = get_errno(fchown(arg1, low2highuid(arg2), low2highgid(arg3)));
2650         break;
2651 #ifdef TARGET_NR_setresuid
2652     case TARGET_NR_setresuid:
2653         ret = get_errno(setresuid(low2highuid(arg1),
2654                                   low2highuid(arg2),
2655                                   low2highuid(arg3)));
2656         break;
2657 #endif
2658 #ifdef TARGET_NR_getresuid
2659     case TARGET_NR_getresuid:
2660         {
2661             int ruid, euid, suid;
2662             ret = get_errno(getresuid(&ruid, &euid, &suid));
2663             if (!is_error(ret)) {
2664                 *(uint16_t *)arg1 = tswap16(high2lowuid(ruid));
2665                 *(uint16_t *)arg2 = tswap16(high2lowuid(euid));
2666                 *(uint16_t *)arg3 = tswap16(high2lowuid(suid));
2667             }
2668         }
2669         break;
2670 #endif
2671 #ifdef TARGET_NR_getresgid
2672     case TARGET_NR_setresgid:
2673         ret = get_errno(setresgid(low2highgid(arg1),
2674                                   low2highgid(arg2),
2675                                   low2highgid(arg3)));
2676         break;
2677 #endif
2678 #ifdef TARGET_NR_getresgid
2679     case TARGET_NR_getresgid:
2680         {
2681             int rgid, egid, sgid;
2682             ret = get_errno(getresgid(&rgid, &egid, &sgid));
2683             if (!is_error(ret)) {
2684                 *(uint16_t *)arg1 = tswap16(high2lowgid(rgid));
2685                 *(uint16_t *)arg2 = tswap16(high2lowgid(egid));
2686                 *(uint16_t *)arg3 = tswap16(high2lowgid(sgid));
2687             }
2688         }
2689         break;
2690 #endif
2691     case TARGET_NR_chown:
2692         ret = get_errno(chown((const char *)arg1, low2highuid(arg2), low2highgid(arg3)));
2693         break;
2694     case TARGET_NR_setuid:
2695         ret = get_errno(setuid(low2highuid(arg1)));
2696         break;
2697     case TARGET_NR_setgid:
2698         ret = get_errno(setgid(low2highgid(arg1)));
2699         break;
2700     case TARGET_NR_setfsuid:
2701         ret = get_errno(setfsuid(arg1));
2702         break;
2703     case TARGET_NR_setfsgid:
2704         ret = get_errno(setfsgid(arg1));
2705         break;
2706 #endif /* USE_UID16 */
2707
2708     case TARGET_NR_lchown32:
2709         ret = get_errno(lchown((const char *)arg1, arg2, arg3));
2710         break;
2711     case TARGET_NR_getuid32:
2712         ret = get_errno(getuid());
2713         break;
2714     case TARGET_NR_getgid32:
2715         ret = get_errno(getgid());
2716         break;
2717     case TARGET_NR_geteuid32:
2718         ret = get_errno(geteuid());
2719         break;
2720     case TARGET_NR_getegid32:
2721         ret = get_errno(getegid());
2722         break;
2723     case TARGET_NR_setreuid32:
2724         ret = get_errno(setreuid(arg1, arg2));
2725         break;
2726     case TARGET_NR_setregid32:
2727         ret = get_errno(setregid(arg1, arg2));
2728         break;
2729     case TARGET_NR_getgroups32:
2730         goto unimplemented;
2731     case TARGET_NR_setgroups32:
2732         goto unimplemented;
2733     case TARGET_NR_fchown32:
2734         ret = get_errno(fchown(arg1, arg2, arg3));
2735         break;
2736     case TARGET_NR_setresuid32:
2737         ret = get_errno(setresuid(arg1, arg2, arg3));
2738         break;
2739     case TARGET_NR_getresuid32:
2740         {
2741             int ruid, euid, suid;
2742             ret = get_errno(getresuid(&ruid, &euid, &suid));
2743             if (!is_error(ret)) {
2744                 *(uint32_t *)arg1 = tswap32(ruid);
2745                 *(uint32_t *)arg2 = tswap32(euid);
2746                 *(uint32_t *)arg3 = tswap32(suid);
2747             }
2748         }
2749         break;
2750     case TARGET_NR_setresgid32:
2751         ret = get_errno(setresgid(arg1, arg2, arg3));
2752         break;
2753     case TARGET_NR_getresgid32:
2754         {
2755             int rgid, egid, sgid;
2756             ret = get_errno(getresgid(&rgid, &egid, &sgid));
2757             if (!is_error(ret)) {
2758                 *(uint32_t *)arg1 = tswap32(rgid);
2759                 *(uint32_t *)arg2 = tswap32(egid);
2760                 *(uint32_t *)arg3 = tswap32(sgid);
2761             }
2762         }
2763         break;
2764     case TARGET_NR_chown32:
2765         ret = get_errno(chown((const char *)arg1, arg2, arg3));
2766         break;
2767     case TARGET_NR_setuid32:
2768         ret = get_errno(setuid(arg1));
2769         break;
2770     case TARGET_NR_setgid32:
2771         ret = get_errno(setgid(arg1));
2772         break;
2773     case TARGET_NR_setfsuid32:
2774         ret = get_errno(setfsuid(arg1));
2775         break;
2776     case TARGET_NR_setfsgid32:
2777         ret = get_errno(setfsgid(arg1));
2778         break;
2779
2780     case TARGET_NR_pivot_root:
2781         goto unimplemented;
2782 #ifdef TARGET_NR_mincore
2783     case TARGET_NR_mincore:
2784         goto unimplemented;
2785 #endif
2786 #ifdef TARGET_NR_madvise
2787     case TARGET_NR_madvise:
2788         goto unimplemented;
2789 #endif
2790 #if TARGET_LONG_BITS == 32
2791     case TARGET_NR_fcntl64:
2792     {
2793         struct flock64 fl;
2794         struct target_flock64 *target_fl = (void *)arg3;
2795
2796         switch(arg2) {
2797         case F_GETLK64:
2798             ret = get_errno(fcntl(arg1, arg2, &fl));
2799             if (ret == 0) {
2800                 target_fl->l_type = tswap16(fl.l_type);
2801                 target_fl->l_whence = tswap16(fl.l_whence);
2802                 target_fl->l_start = tswap64(fl.l_start);
2803                 target_fl->l_len = tswap64(fl.l_len);
2804                 target_fl->l_pid = tswapl(fl.l_pid);
2805             }
2806             break;
2807
2808         case F_SETLK64:
2809         case F_SETLKW64:
2810             fl.l_type = tswap16(target_fl->l_type);
2811             fl.l_whence = tswap16(target_fl->l_whence);
2812             fl.l_start = tswap64(target_fl->l_start);
2813             fl.l_len = tswap64(target_fl->l_len);
2814             fl.l_pid = tswapl(target_fl->l_pid);
2815             ret = get_errno(fcntl(arg1, arg2, &fl));
2816             break;
2817         default:
2818             ret = get_errno(do_fcntl(arg1, arg2, arg3));
2819             break;
2820         }
2821         break;
2822     }
2823 #endif
2824 #ifdef TARGET_NR_security
2825     case TARGET_NR_security:
2826         goto unimplemented;
2827 #endif
2828 #ifdef TARGET_NR_getpagesize
2829     case TARGET_NR_getpagesize:
2830         ret = TARGET_PAGE_SIZE;
2831         break;
2832 #endif
2833     case TARGET_NR_gettid:
2834         ret = get_errno(gettid());
2835         break;
2836     case TARGET_NR_readahead:
2837         goto unimplemented;
2838 #ifdef TARGET_NR_setxattr
2839     case TARGET_NR_setxattr:
2840     case TARGET_NR_lsetxattr:
2841     case TARGET_NR_fsetxattr:
2842     case TARGET_NR_getxattr:
2843     case TARGET_NR_lgetxattr:
2844     case TARGET_NR_fgetxattr:
2845     case TARGET_NR_listxattr:
2846     case TARGET_NR_llistxattr:
2847     case TARGET_NR_flistxattr:
2848     case TARGET_NR_removexattr:
2849     case TARGET_NR_lremovexattr:
2850     case TARGET_NR_fremovexattr:
2851         goto unimplemented_nowarn;
2852 #endif
2853 #ifdef TARGET_NR_set_thread_area
2854     case TARGET_NR_set_thread_area:
2855     case TARGET_NR_get_thread_area:
2856         goto unimplemented_nowarn;
2857 #endif
2858     default:
2859     unimplemented:
2860         gemu_log("qemu: Unsupported syscall: %d\n", num);
2861     unimplemented_nowarn:
2862         ret = -ENOSYS;
2863         break;
2864     }
2865  fail:
2866 #ifdef DEBUG
2867     gemu_log(" = %ld\n", ret);
2868 #endif
2869     return ret;
2870 }
2871