1 /* 2 * os-win32.c 3 * 4 * Copyright (c) 2003-2008 Fabrice Bellard 5 * Copyright (c) 2010-2016 Red Hat, Inc. 6 * 7 * QEMU library functions for win32 which are shared between QEMU and 8 * the QEMU tools. 9 * 10 * Permission is hereby granted, free of charge, to any person obtaining a copy 11 * of this software and associated documentation files (the "Software"), to deal 12 * in the Software without restriction, including without limitation the rights 13 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 14 * copies of the Software, and to permit persons to whom the Software is 15 * furnished to do so, subject to the following conditions: 16 * 17 * The above copyright notice and this permission notice shall be included in 18 * all copies or substantial portions of the Software. 19 * 20 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 21 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 22 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 23 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 24 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 25 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 26 * THE SOFTWARE. 27 */ 28 29 #include "qemu/osdep.h" 30 #include <windows.h> 31 #include "qapi/error.h" 32 #include "qemu/main-loop.h" 33 #include "trace.h" 34 #include "qemu/sockets.h" 35 #include "qemu/cutils.h" 36 #include "qemu/error-report.h" 37 #include <malloc.h> 38 39 static int get_allocation_granularity(void) 40 { 41 SYSTEM_INFO system_info; 42 43 GetSystemInfo(&system_info); 44 return system_info.dwAllocationGranularity; 45 } 46 47 void *qemu_anon_ram_alloc(size_t size, uint64_t *align, bool shared, 48 bool noreserve) 49 { 50 void *ptr; 51 52 if (noreserve) { 53 /* 54 * We need a MEM_COMMIT before accessing any memory in a MEM_RESERVE 55 * area; we cannot easily mimic POSIX MAP_NORESERVE semantics. 56 */ 57 error_report("Skipping reservation of swap space is not supported."); 58 return NULL; 59 } 60 61 ptr = VirtualAlloc(NULL, size, MEM_COMMIT, PAGE_READWRITE); 62 trace_qemu_anon_ram_alloc(size, ptr); 63 64 if (ptr && align) { 65 *align = MAX(get_allocation_granularity(), getpagesize()); 66 } 67 return ptr; 68 } 69 70 void qemu_anon_ram_free(void *ptr, size_t size) 71 { 72 trace_qemu_anon_ram_free(ptr, size); 73 if (ptr) { 74 VirtualFree(ptr, 0, MEM_RELEASE); 75 } 76 } 77 78 #ifndef _POSIX_THREAD_SAFE_FUNCTIONS 79 /* FIXME: add proper locking */ 80 struct tm *gmtime_r(const time_t *timep, struct tm *result) 81 { 82 struct tm *p = gmtime(timep); 83 memset(result, 0, sizeof(*result)); 84 if (p) { 85 *result = *p; 86 p = result; 87 } 88 return p; 89 } 90 91 /* FIXME: add proper locking */ 92 struct tm *localtime_r(const time_t *timep, struct tm *result) 93 { 94 struct tm *p = localtime(timep); 95 memset(result, 0, sizeof(*result)); 96 if (p) { 97 *result = *p; 98 p = result; 99 } 100 return p; 101 } 102 #endif /* _POSIX_THREAD_SAFE_FUNCTIONS */ 103 104 static int socket_error(void) 105 { 106 switch (WSAGetLastError()) { 107 case 0: 108 return 0; 109 case WSAEINTR: 110 return EINTR; 111 case WSAEINVAL: 112 return EINVAL; 113 case WSA_INVALID_HANDLE: 114 return EBADF; 115 case WSA_NOT_ENOUGH_MEMORY: 116 return ENOMEM; 117 case WSA_INVALID_PARAMETER: 118 return EINVAL; 119 case WSAENAMETOOLONG: 120 return ENAMETOOLONG; 121 case WSAENOTEMPTY: 122 return ENOTEMPTY; 123 case WSAEWOULDBLOCK: 124 /* not using EWOULDBLOCK as we don't want code to have 125 * to check both EWOULDBLOCK and EAGAIN */ 126 return EAGAIN; 127 case WSAEINPROGRESS: 128 return EINPROGRESS; 129 case WSAEALREADY: 130 return EALREADY; 131 case WSAENOTSOCK: 132 return ENOTSOCK; 133 case WSAEDESTADDRREQ: 134 return EDESTADDRREQ; 135 case WSAEMSGSIZE: 136 return EMSGSIZE; 137 case WSAEPROTOTYPE: 138 return EPROTOTYPE; 139 case WSAENOPROTOOPT: 140 return ENOPROTOOPT; 141 case WSAEPROTONOSUPPORT: 142 return EPROTONOSUPPORT; 143 case WSAEOPNOTSUPP: 144 return EOPNOTSUPP; 145 case WSAEAFNOSUPPORT: 146 return EAFNOSUPPORT; 147 case WSAEADDRINUSE: 148 return EADDRINUSE; 149 case WSAEADDRNOTAVAIL: 150 return EADDRNOTAVAIL; 151 case WSAENETDOWN: 152 return ENETDOWN; 153 case WSAENETUNREACH: 154 return ENETUNREACH; 155 case WSAENETRESET: 156 return ENETRESET; 157 case WSAECONNABORTED: 158 return ECONNABORTED; 159 case WSAECONNRESET: 160 return ECONNRESET; 161 case WSAENOBUFS: 162 return ENOBUFS; 163 case WSAEISCONN: 164 return EISCONN; 165 case WSAENOTCONN: 166 return ENOTCONN; 167 case WSAETIMEDOUT: 168 return ETIMEDOUT; 169 case WSAECONNREFUSED: 170 return ECONNREFUSED; 171 case WSAELOOP: 172 return ELOOP; 173 case WSAEHOSTUNREACH: 174 return EHOSTUNREACH; 175 default: 176 return EIO; 177 } 178 } 179 180 void qemu_socket_set_block(int fd) 181 { 182 unsigned long opt = 0; 183 qemu_socket_unselect(fd, NULL); 184 ioctlsocket(fd, FIONBIO, &opt); 185 } 186 187 int qemu_socket_try_set_nonblock(int fd) 188 { 189 unsigned long opt = 1; 190 if (ioctlsocket(fd, FIONBIO, &opt) != NO_ERROR) { 191 return -socket_error(); 192 } 193 return 0; 194 } 195 196 void qemu_socket_set_nonblock(int fd) 197 { 198 (void)qemu_socket_try_set_nonblock(fd); 199 } 200 201 int socket_set_fast_reuse(int fd) 202 { 203 /* Enabling the reuse of an endpoint that was used by a socket still in 204 * TIME_WAIT state is usually performed by setting SO_REUSEADDR. On Windows 205 * fast reuse is the default and SO_REUSEADDR does strange things. So we 206 * don't have to do anything here. More info can be found at: 207 * http://msdn.microsoft.com/en-us/library/windows/desktop/ms740621.aspx */ 208 return 0; 209 } 210 211 int inet_aton(const char *cp, struct in_addr *ia) 212 { 213 uint32_t addr = inet_addr(cp); 214 if (addr == 0xffffffff) { 215 return 0; 216 } 217 ia->s_addr = addr; 218 return 1; 219 } 220 221 void qemu_set_cloexec(int fd) 222 { 223 } 224 225 int qemu_get_thread_id(void) 226 { 227 return GetCurrentThreadId(); 228 } 229 230 char * 231 qemu_get_local_state_dir(void) 232 { 233 const char * const *data_dirs = g_get_system_data_dirs(); 234 235 g_assert(data_dirs && data_dirs[0]); 236 237 return g_strdup(data_dirs[0]); 238 } 239 240 void qemu_set_tty_echo(int fd, bool echo) 241 { 242 HANDLE handle = (HANDLE)_get_osfhandle(fd); 243 DWORD dwMode = 0; 244 245 if (handle == INVALID_HANDLE_VALUE) { 246 return; 247 } 248 249 GetConsoleMode(handle, &dwMode); 250 251 if (echo) { 252 SetConsoleMode(handle, dwMode | ENABLE_ECHO_INPUT | ENABLE_LINE_INPUT); 253 } else { 254 SetConsoleMode(handle, 255 dwMode & ~(ENABLE_ECHO_INPUT | ENABLE_LINE_INPUT)); 256 } 257 } 258 259 int getpagesize(void) 260 { 261 SYSTEM_INFO system_info; 262 263 GetSystemInfo(&system_info); 264 return system_info.dwPageSize; 265 } 266 267 void qemu_prealloc_mem(int fd, char *area, size_t sz, int max_threads, 268 ThreadContext *tc, Error **errp) 269 { 270 int i; 271 size_t pagesize = qemu_real_host_page_size(); 272 273 sz = (sz + pagesize - 1) & -pagesize; 274 for (i = 0; i < sz / pagesize; i++) { 275 memset(area + pagesize * i, 0, 1); 276 } 277 } 278 279 char *qemu_get_pid_name(pid_t pid) 280 { 281 /* XXX Implement me */ 282 abort(); 283 } 284 285 286 bool qemu_socket_select(SOCKET s, WSAEVENT hEventObject, 287 long lNetworkEvents, Error **errp) 288 { 289 if (errp == NULL) { 290 errp = &error_warn; 291 } 292 293 if (WSAEventSelect(s, hEventObject, lNetworkEvents) != 0) { 294 error_setg_win32(errp, WSAGetLastError(), "failed to WSAEventSelect()"); 295 return false; 296 } 297 298 return true; 299 } 300 301 bool qemu_socket_unselect(SOCKET s, Error **errp) 302 { 303 return qemu_socket_select(s, NULL, 0, errp); 304 } 305 306 #undef connect 307 int qemu_connect_wrap(int sockfd, const struct sockaddr *addr, 308 socklen_t addrlen) 309 { 310 int ret; 311 ret = connect(sockfd, addr, addrlen); 312 if (ret < 0) { 313 if (WSAGetLastError() == WSAEWOULDBLOCK) { 314 errno = EINPROGRESS; 315 } else { 316 errno = socket_error(); 317 } 318 } 319 return ret; 320 } 321 322 323 #undef listen 324 int qemu_listen_wrap(int sockfd, int backlog) 325 { 326 int ret; 327 ret = listen(sockfd, backlog); 328 if (ret < 0) { 329 errno = socket_error(); 330 } 331 return ret; 332 } 333 334 335 #undef bind 336 int qemu_bind_wrap(int sockfd, const struct sockaddr *addr, 337 socklen_t addrlen) 338 { 339 int ret; 340 ret = bind(sockfd, addr, addrlen); 341 if (ret < 0) { 342 errno = socket_error(); 343 } 344 return ret; 345 } 346 347 348 #undef socket 349 int qemu_socket_wrap(int domain, int type, int protocol) 350 { 351 int ret; 352 ret = socket(domain, type, protocol); 353 if (ret < 0) { 354 errno = socket_error(); 355 } 356 return ret; 357 } 358 359 360 #undef accept 361 int qemu_accept_wrap(int sockfd, struct sockaddr *addr, 362 socklen_t *addrlen) 363 { 364 int ret; 365 ret = accept(sockfd, addr, addrlen); 366 if (ret < 0) { 367 errno = socket_error(); 368 } 369 return ret; 370 } 371 372 373 #undef shutdown 374 int qemu_shutdown_wrap(int sockfd, int how) 375 { 376 int ret; 377 ret = shutdown(sockfd, how); 378 if (ret < 0) { 379 errno = socket_error(); 380 } 381 return ret; 382 } 383 384 385 #undef ioctlsocket 386 int qemu_ioctlsocket_wrap(int fd, int req, void *val) 387 { 388 int ret; 389 ret = ioctlsocket(fd, req, val); 390 if (ret < 0) { 391 errno = socket_error(); 392 } 393 return ret; 394 } 395 396 397 #undef closesocket 398 int qemu_closesocket_wrap(int fd) 399 { 400 int ret; 401 ret = closesocket(fd); 402 if (ret < 0) { 403 errno = socket_error(); 404 } 405 return ret; 406 } 407 408 409 #undef getsockopt 410 int qemu_getsockopt_wrap(int sockfd, int level, int optname, 411 void *optval, socklen_t *optlen) 412 { 413 int ret; 414 ret = getsockopt(sockfd, level, optname, optval, optlen); 415 if (ret < 0) { 416 errno = socket_error(); 417 } 418 return ret; 419 } 420 421 422 #undef setsockopt 423 int qemu_setsockopt_wrap(int sockfd, int level, int optname, 424 const void *optval, socklen_t optlen) 425 { 426 int ret; 427 ret = setsockopt(sockfd, level, optname, optval, optlen); 428 if (ret < 0) { 429 errno = socket_error(); 430 } 431 return ret; 432 } 433 434 435 #undef getpeername 436 int qemu_getpeername_wrap(int sockfd, struct sockaddr *addr, 437 socklen_t *addrlen) 438 { 439 int ret; 440 ret = getpeername(sockfd, addr, addrlen); 441 if (ret < 0) { 442 errno = socket_error(); 443 } 444 return ret; 445 } 446 447 448 #undef getsockname 449 int qemu_getsockname_wrap(int sockfd, struct sockaddr *addr, 450 socklen_t *addrlen) 451 { 452 int ret; 453 ret = getsockname(sockfd, addr, addrlen); 454 if (ret < 0) { 455 errno = socket_error(); 456 } 457 return ret; 458 } 459 460 461 #undef send 462 ssize_t qemu_send_wrap(int sockfd, const void *buf, size_t len, int flags) 463 { 464 int ret; 465 ret = send(sockfd, buf, len, flags); 466 if (ret < 0) { 467 errno = socket_error(); 468 } 469 return ret; 470 } 471 472 473 #undef sendto 474 ssize_t qemu_sendto_wrap(int sockfd, const void *buf, size_t len, int flags, 475 const struct sockaddr *addr, socklen_t addrlen) 476 { 477 int ret; 478 ret = sendto(sockfd, buf, len, flags, addr, addrlen); 479 if (ret < 0) { 480 errno = socket_error(); 481 } 482 return ret; 483 } 484 485 486 #undef recv 487 ssize_t qemu_recv_wrap(int sockfd, void *buf, size_t len, int flags) 488 { 489 int ret; 490 ret = recv(sockfd, buf, len, flags); 491 if (ret < 0) { 492 errno = socket_error(); 493 } 494 return ret; 495 } 496 497 498 #undef recvfrom 499 ssize_t qemu_recvfrom_wrap(int sockfd, void *buf, size_t len, int flags, 500 struct sockaddr *addr, socklen_t *addrlen) 501 { 502 int ret; 503 ret = recvfrom(sockfd, buf, len, flags, addr, addrlen); 504 if (ret < 0) { 505 errno = socket_error(); 506 } 507 return ret; 508 } 509 510 bool qemu_write_pidfile(const char *filename, Error **errp) 511 { 512 char buffer[128]; 513 int len; 514 HANDLE file; 515 OVERLAPPED overlap; 516 BOOL ret; 517 memset(&overlap, 0, sizeof(overlap)); 518 519 file = CreateFile(filename, GENERIC_WRITE, FILE_SHARE_READ, NULL, 520 OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL); 521 522 if (file == INVALID_HANDLE_VALUE) { 523 error_setg(errp, "Failed to create PID file"); 524 return false; 525 } 526 len = snprintf(buffer, sizeof(buffer), FMT_pid "\n", (pid_t)getpid()); 527 ret = WriteFile(file, (LPCVOID)buffer, (DWORD)len, 528 NULL, &overlap); 529 CloseHandle(file); 530 if (ret == 0) { 531 error_setg(errp, "Failed to write PID file"); 532 return false; 533 } 534 return true; 535 } 536 537 size_t qemu_get_host_physmem(void) 538 { 539 MEMORYSTATUSEX statex; 540 statex.dwLength = sizeof(statex); 541 542 if (GlobalMemoryStatusEx(&statex)) { 543 return statex.ullTotalPhys; 544 } 545 return 0; 546 } 547 548 int qemu_msync(void *addr, size_t length, int fd) 549 { 550 /** 551 * Perform the sync based on the file descriptor 552 * The sync range will most probably be wider than the one 553 * requested - but it will still get the job done 554 */ 555 return qemu_fdatasync(fd); 556 } 557