4 * Copyright (c) 2003-2008 Fabrice Bellard
5 * Copyright (c) 2010-2016 Red Hat, Inc.
7 * QEMU library functions for win32 which are shared between QEMU and
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:
17 * The above copyright notice and this permission notice shall be included in
18 * all copies or substantial portions of the Software.
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
28 * The implementation of g_poll (functions poll_rest, g_poll) at the end of
29 * this file are based on code from GNOME glib-2 and use a different license,
30 * see the license comment there.
32 #include "qemu/osdep.h"
34 #include "qapi/error.h"
35 #include "sysemu/sysemu.h"
36 #include "qemu/main-loop.h"
38 #include "qemu/sockets.h"
39 #include "qemu/cutils.h"
40 #include "qemu/error-report.h"
42 /* this must come after including "trace.h" */
45 void *qemu_oom_check(void *ptr)
48 // CONFIG_MARU MODIFICATION
49 //fprintf(stderr, "Failed to allocate memory: %lu\n", GetLastError());
50 error_report("Failed to allocate memory: %lu", GetLastError());
56 void *qemu_try_memalign(size_t alignment, size_t size)
63 ptr = VirtualAlloc(NULL, size, MEM_COMMIT, PAGE_READWRITE);
64 trace_qemu_memalign(alignment, size, ptr);
68 void *qemu_memalign(size_t alignment, size_t size)
70 return qemu_oom_check(qemu_try_memalign(alignment, size));
74 void *preallocated_ram_ptr = NULL;
75 int preallocated_ram_size = -1;
78 void *qemu_anon_ram_alloc(size_t size, uint64_t *align)
82 /* FIXME: this is not exactly optimal solution since VirtualAlloc
83 has 64Kb granularity, but at least it guarantees us that the
84 memory is page aligned. */
86 if (size == preallocated_ram_size && preallocated_ram_ptr) {
87 void *ptr = preallocated_ram_ptr;
88 preallocated_ram_ptr = NULL;
89 preallocated_ram_size = -1;
93 ptr = VirtualAlloc(NULL, size, MEM_COMMIT, PAGE_READWRITE);
94 trace_qemu_anon_ram_alloc(size, ptr);
98 void qemu_vfree(void *ptr)
100 trace_qemu_vfree(ptr);
102 VirtualFree(ptr, 0, MEM_RELEASE);
106 void qemu_anon_ram_free(void *ptr, size_t size)
108 trace_qemu_anon_ram_free(ptr, size);
110 VirtualFree(ptr, 0, MEM_RELEASE);
114 #ifndef CONFIG_LOCALTIME_R
115 /* FIXME: add proper locking */
116 struct tm *gmtime_r(const time_t *timep, struct tm *result)
118 struct tm *p = gmtime(timep);
119 memset(result, 0, sizeof(*result));
127 /* FIXME: add proper locking */
128 struct tm *localtime_r(const time_t *timep, struct tm *result)
130 struct tm *p = localtime(timep);
131 memset(result, 0, sizeof(*result));
138 #endif /* CONFIG_LOCALTIME_R */
140 void qemu_set_block(int fd)
142 unsigned long opt = 0;
143 WSAEventSelect(fd, NULL, 0);
144 ioctlsocket(fd, FIONBIO, &opt);
147 void qemu_set_nonblock(int fd)
149 unsigned long opt = 1;
150 ioctlsocket(fd, FIONBIO, &opt);
151 qemu_fd_register(fd);
154 int socket_set_fast_reuse(int fd)
156 /* Enabling the reuse of an endpoint that was used by a socket still in
157 * TIME_WAIT state is usually performed by setting SO_REUSEADDR. On Windows
158 * fast reuse is the default and SO_REUSEADDR does strange things. So we
159 * don't have to do anything here. More info can be found at:
160 * http://msdn.microsoft.com/en-us/library/windows/desktop/ms740621.aspx */
165 static int socket_error(void)
167 switch (WSAGetLastError()) {
174 case WSA_INVALID_HANDLE:
176 case WSA_NOT_ENOUGH_MEMORY:
178 case WSA_INVALID_PARAMETER:
180 case WSAENAMETOOLONG:
185 /* not using EWOULDBLOCK as we don't want code to have
186 * to check both EWOULDBLOCK and EAGAIN */
194 case WSAEDESTADDRREQ:
202 case WSAEPROTONOSUPPORT:
203 return EPROTONOSUPPORT;
206 case WSAEAFNOSUPPORT:
210 case WSAEADDRNOTAVAIL:
211 return EADDRNOTAVAIL;
218 case WSAECONNABORTED:
230 case WSAECONNREFUSED:
234 case WSAEHOSTUNREACH:
241 int inet_aton(const char *cp, struct in_addr *ia)
243 uint32_t addr = inet_addr(cp);
244 if (addr == 0xffffffff) {
251 void qemu_set_cloexec(int fd)
255 /* Offset between 1/1/1601 and 1/1/1970 in 100 nanosec units */
256 #define _W32_FT_OFFSET (116444736000000000ULL)
258 int qemu_gettimeofday(qemu_timeval *tp)
261 unsigned long long ns100; /*time since 1 Jan 1601 in 100ns units */
266 GetSystemTimeAsFileTime (&_now.ft);
267 tp->tv_usec=(long)((_now.ns100 / 10ULL) % 1000000ULL );
268 tp->tv_sec= (long)((_now.ns100 - _W32_FT_OFFSET) / 10000000ULL);
270 /* Always return 0 as per Open Group Base Specifications Issue 6.
271 Do not set errno on error. */
275 int qemu_get_thread_id(void)
277 return GetCurrentThreadId();
281 qemu_get_local_state_pathname(const char *relative_pathname)
284 char base_path[MAX_PATH+1] = "";
286 result = SHGetFolderPath(NULL, CSIDL_COMMON_APPDATA, NULL,
287 /* SHGFP_TYPE_CURRENT */ 0, base_path);
288 if (result != S_OK) {
289 /* misconfigured environment */
290 g_critical("CSIDL_COMMON_APPDATA unavailable: %ld", (long)result);
293 return g_strdup_printf("%s" G_DIR_SEPARATOR_S "%s", base_path,
297 void qemu_set_tty_echo(int fd, bool echo)
299 HANDLE handle = (HANDLE)_get_osfhandle(fd);
302 if (handle == INVALID_HANDLE_VALUE) {
306 GetConsoleMode(handle, &dwMode);
309 SetConsoleMode(handle, dwMode | ENABLE_ECHO_INPUT | ENABLE_LINE_INPUT);
311 SetConsoleMode(handle,
312 dwMode & ~(ENABLE_ECHO_INPUT | ENABLE_LINE_INPUT));
316 static char exec_dir[PATH_MAX];
318 void qemu_init_exec_dir(const char *argv0)
325 len = GetModuleFileName(NULL, buf, sizeof(buf) - 1);
332 while (p != buf && *p != '\\') {
336 if (access(buf, R_OK) == 0) {
337 pstrcpy(exec_dir, sizeof(exec_dir), buf);
341 char *qemu_get_exec_dir(void)
343 return g_strdup(exec_dir);
347 * The original implementation of g_poll from glib has a problem on Windows
348 * when using timeouts < 10 ms.
350 * Whenever g_poll is called with timeout < 10 ms, it does a quick poll instead
351 * of wait. This causes significant performance degradation of QEMU.
353 * The following code is a copy of the original code from glib/gpoll.c
354 * (glib commit 20f4d1820b8d4d0fc4447188e33efffd6d4a88d8 from 2014-02-19).
355 * Some debug code was removed and the code was reformatted.
356 * All other code modifications are marked with 'QEMU'.
360 * gpoll.c: poll(2) abstraction
361 * Copyright 1998 Owen Taylor
362 * Copyright 2008 Red Hat, Inc.
364 * This library is free software; you can redistribute it and/or
365 * modify it under the terms of the GNU Lesser General Public
366 * License as published by the Free Software Foundation; either
367 * version 2 of the License, or (at your option) any later version.
369 * This library is distributed in the hope that it will be useful,
370 * but WITHOUT ANY WARRANTY; without even the implied warranty of
371 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
372 * Lesser General Public License for more details.
374 * You should have received a copy of the GNU Lesser General Public
375 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
378 static int poll_rest(gboolean poll_msgs, HANDLE *handles, gint nhandles,
379 GPollFD *fds, guint nfds, gint timeout)
386 /* Wait for either messages or handles
387 * -> Use MsgWaitForMultipleObjectsEx
389 ready = MsgWaitForMultipleObjectsEx(nhandles, handles, timeout,
390 QS_ALLINPUT, MWMO_ALERTABLE);
392 if (ready == WAIT_FAILED) {
393 gchar *emsg = g_win32_error_message(GetLastError());
394 g_warning("MsgWaitForMultipleObjectsEx failed: %s", emsg);
397 } else if (nhandles == 0) {
398 /* No handles to wait for, just the timeout */
399 if (timeout == INFINITE) {
402 SleepEx(timeout, TRUE);
403 ready = WAIT_TIMEOUT;
406 /* Wait for just handles
407 * -> Use WaitForMultipleObjectsEx
410 WaitForMultipleObjectsEx(nhandles, handles, FALSE, timeout, TRUE);
411 if (ready == WAIT_FAILED) {
412 gchar *emsg = g_win32_error_message(GetLastError());
413 g_warning("WaitForMultipleObjectsEx failed: %s", emsg);
418 if (ready == WAIT_FAILED) {
420 } else if (ready == WAIT_TIMEOUT || ready == WAIT_IO_COMPLETION) {
422 } else if (poll_msgs && ready == WAIT_OBJECT_0 + nhandles) {
423 for (f = fds; f < &fds[nfds]; ++f) {
424 if (f->fd == G_WIN32_MSG_HANDLE && f->events & G_IO_IN) {
425 f->revents |= G_IO_IN;
429 /* If we have a timeout, or no handles to poll, be satisfied
430 * with just noticing we have messages waiting.
432 if (timeout != 0 || nhandles == 0) {
436 /* If no timeout and handles to poll, recurse to poll them,
439 recursed_result = poll_rest(FALSE, handles, nhandles, fds, nfds, 0);
440 return (recursed_result == -1) ? -1 : 1 + recursed_result;
441 } else if (/* QEMU: removed the following unneeded statement which causes
442 * a compiler warning: ready >= WAIT_OBJECT_0 && */
443 ready < WAIT_OBJECT_0 + nhandles) {
444 for (f = fds; f < &fds[nfds]; ++f) {
445 if ((HANDLE) f->fd == handles[ready - WAIT_OBJECT_0]) {
446 f->revents = f->events;
450 /* If no timeout and polling several handles, recurse to poll
453 if (timeout == 0 && nhandles > 1) {
454 /* Remove the handle that fired */
456 if (ready < nhandles - 1) {
457 for (i = ready - WAIT_OBJECT_0 + 1; i < nhandles; i++) {
458 handles[i-1] = handles[i];
462 recursed_result = poll_rest(FALSE, handles, nhandles, fds, nfds, 0);
463 return (recursed_result == -1) ? -1 : 1 + recursed_result;
471 gint g_poll(GPollFD *fds, guint nfds, gint timeout)
473 HANDLE handles[MAXIMUM_WAIT_OBJECTS];
474 gboolean poll_msgs = FALSE;
479 for (f = fds; f < &fds[nfds]; ++f) {
480 if (f->fd == G_WIN32_MSG_HANDLE && (f->events & G_IO_IN)) {
482 } else if (f->fd > 0) {
483 /* Don't add the same handle several times into the array, as
484 * docs say that is not allowed, even if it actually does seem
489 for (i = 0; i < nhandles; i++) {
490 if (handles[i] == (HANDLE) f->fd) {
496 if (nhandles == MAXIMUM_WAIT_OBJECTS) {
497 g_warning("Too many handles to wait for!\n");
500 handles[nhandles++] = (HANDLE) f->fd;
506 for (f = fds; f < &fds[nfds]; ++f) {
514 /* Polling for several things? */
515 if (nhandles > 1 || (nhandles > 0 && poll_msgs)) {
516 /* First check if one or several of them are immediately
519 retval = poll_rest(poll_msgs, handles, nhandles, fds, nfds, 0);
521 /* If not, and we have a significant timeout, poll again with
522 * timeout then. Note that this will return indication for only
523 * one event, or only for messages. We ignore timeouts less than
524 * ten milliseconds as they are mostly pointless on Windows, the
525 * MsgWaitForMultipleObjectsEx() call will timeout right away
528 * Modification for QEMU: replaced timeout >= 10 by timeout > 0.
530 if (retval == 0 && (timeout == INFINITE || timeout > 0)) {
531 retval = poll_rest(poll_msgs, handles, nhandles,
535 /* Just polling for one thing, so no need to check first if
536 * available immediately
538 retval = poll_rest(poll_msgs, handles, nhandles, fds, nfds, timeout);
542 for (f = fds; f < &fds[nfds]; ++f) {
550 int getpagesize(void)
552 SYSTEM_INFO system_info;
554 GetSystemInfo(&system_info);
555 return system_info.dwPageSize;
558 void os_mem_prealloc(int fd, char *area, size_t memory, Error **errp)
561 size_t pagesize = getpagesize();
563 memory = (memory + pagesize - 1) & -pagesize;
564 for (i = 0; i < memory / pagesize; i++) {
565 memset(area + pagesize * i, 0, 1);
570 /* XXX: put correct support for win32 */
571 int qemu_read_password(char *buf, int buf_size)
575 printf("Password: ");
583 } else if (c == '\n') {
585 } else if (i < (buf_size - 1)) {
594 char *qemu_get_pid_name(pid_t pid)
596 /* XXX Implement me */
601 pid_t qemu_fork(Error **errp)
604 error_setg_errno(errp, errno,
605 "cannot fork child process");
611 int qemu_connect_wrap(int sockfd, const struct sockaddr *addr,
615 ret = connect(sockfd, addr, addrlen);
617 errno = socket_error();
624 int qemu_listen_wrap(int sockfd, int backlog)
627 ret = listen(sockfd, backlog);
629 errno = socket_error();
636 int qemu_bind_wrap(int sockfd, const struct sockaddr *addr,
640 ret = bind(sockfd, addr, addrlen);
642 errno = socket_error();
649 int qemu_socket_wrap(int domain, int type, int protocol)
652 ret = socket(domain, type, protocol);
654 errno = socket_error();
661 int qemu_accept_wrap(int sockfd, struct sockaddr *addr,
665 ret = accept(sockfd, addr, addrlen);
667 errno = socket_error();
674 int qemu_shutdown_wrap(int sockfd, int how)
677 ret = shutdown(sockfd, how);
679 errno = socket_error();
686 int qemu_ioctlsocket_wrap(int fd, int req, void *val)
689 ret = ioctlsocket(fd, req, val);
691 errno = socket_error();
698 int qemu_closesocket_wrap(int fd)
701 ret = closesocket(fd);
703 errno = socket_error();
710 int qemu_getsockopt_wrap(int sockfd, int level, int optname,
711 void *optval, socklen_t *optlen)
714 ret = getsockopt(sockfd, level, optname, optval, optlen);
716 errno = socket_error();
723 int qemu_setsockopt_wrap(int sockfd, int level, int optname,
724 const void *optval, socklen_t optlen)
727 ret = setsockopt(sockfd, level, optname, optval, optlen);
729 errno = socket_error();
736 int qemu_getpeername_wrap(int sockfd, struct sockaddr *addr,
740 ret = getpeername(sockfd, addr, addrlen);
742 errno = socket_error();
749 int qemu_getsockname_wrap(int sockfd, struct sockaddr *addr,
753 ret = getsockname(sockfd, addr, addrlen);
755 errno = socket_error();
762 ssize_t qemu_send_wrap(int sockfd, const void *buf, size_t len, int flags)
765 ret = send(sockfd, buf, len, flags);
767 errno = socket_error();
774 ssize_t qemu_sendto_wrap(int sockfd, const void *buf, size_t len, int flags,
775 const struct sockaddr *addr, socklen_t addrlen)
778 ret = sendto(sockfd, buf, len, flags, addr, addrlen);
780 errno = socket_error();
787 ssize_t qemu_recv_wrap(int sockfd, void *buf, size_t len, int flags)
790 ret = recv(sockfd, buf, len, flags);
792 errno = socket_error();
799 ssize_t qemu_recvfrom_wrap(int sockfd, void *buf, size_t len, int flags,
800 struct sockaddr *addr, socklen_t *addrlen)
803 ret = recvfrom(sockfd, buf, len, flags, addr, addrlen);
805 errno = socket_error();