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"
35 #include "qapi/error.h"
36 #include "sysemu/sysemu.h"
37 #include "qemu/main-loop.h"
39 #include "qemu/sockets.h"
40 #include "qemu/cutils.h"
41 #include "qemu/error-report.h"
43 /* this must come after including "trace.h" */
46 void *qemu_oom_check(void *ptr)
49 // CONFIG_MARU MODIFICATION
50 //fprintf(stderr, "Failed to allocate memory: %lu\n", GetLastError());
51 error_report("Failed to allocate memory: %lu", GetLastError());
57 void *qemu_try_memalign(size_t alignment, size_t size)
64 ptr = VirtualAlloc(NULL, size, MEM_COMMIT, PAGE_READWRITE);
65 trace_qemu_memalign(alignment, size, ptr);
69 void *qemu_memalign(size_t alignment, size_t size)
71 return qemu_oom_check(qemu_try_memalign(alignment, size));
75 void *preallocated_ram_ptr = NULL;
76 int preallocated_ram_size = -1;
79 void *qemu_anon_ram_alloc(size_t size, uint64_t *align)
83 /* FIXME: this is not exactly optimal solution since VirtualAlloc
84 has 64Kb granularity, but at least it guarantees us that the
85 memory is page aligned. */
87 if (size == preallocated_ram_size && preallocated_ram_ptr) {
88 void *ptr = preallocated_ram_ptr;
89 preallocated_ram_ptr = NULL;
90 preallocated_ram_size = -1;
94 ptr = VirtualAlloc(NULL, size, MEM_COMMIT, PAGE_READWRITE);
95 trace_qemu_anon_ram_alloc(size, ptr);
99 void qemu_vfree(void *ptr)
101 trace_qemu_vfree(ptr);
103 VirtualFree(ptr, 0, MEM_RELEASE);
107 void qemu_anon_ram_free(void *ptr, size_t size)
109 trace_qemu_anon_ram_free(ptr, size);
111 VirtualFree(ptr, 0, MEM_RELEASE);
115 #ifndef CONFIG_LOCALTIME_R
116 /* FIXME: add proper locking */
117 struct tm *gmtime_r(const time_t *timep, struct tm *result)
119 struct tm *p = gmtime(timep);
120 memset(result, 0, sizeof(*result));
128 /* FIXME: add proper locking */
129 struct tm *localtime_r(const time_t *timep, struct tm *result)
131 struct tm *p = localtime(timep);
132 memset(result, 0, sizeof(*result));
139 #endif /* CONFIG_LOCALTIME_R */
141 void qemu_set_block(int fd)
143 unsigned long opt = 0;
144 WSAEventSelect(fd, NULL, 0);
145 ioctlsocket(fd, FIONBIO, &opt);
148 void qemu_set_nonblock(int fd)
150 unsigned long opt = 1;
151 ioctlsocket(fd, FIONBIO, &opt);
152 qemu_fd_register(fd);
155 int socket_set_fast_reuse(int fd)
157 /* Enabling the reuse of an endpoint that was used by a socket still in
158 * TIME_WAIT state is usually performed by setting SO_REUSEADDR. On Windows
159 * fast reuse is the default and SO_REUSEADDR does strange things. So we
160 * don't have to do anything here. More info can be found at:
161 * http://msdn.microsoft.com/en-us/library/windows/desktop/ms740621.aspx */
166 static int socket_error(void)
168 switch (WSAGetLastError()) {
175 case WSA_INVALID_HANDLE:
177 case WSA_NOT_ENOUGH_MEMORY:
179 case WSA_INVALID_PARAMETER:
181 case WSAENAMETOOLONG:
186 /* not using EWOULDBLOCK as we don't want code to have
187 * to check both EWOULDBLOCK and EAGAIN */
195 case WSAEDESTADDRREQ:
203 case WSAEPROTONOSUPPORT:
204 return EPROTONOSUPPORT;
207 case WSAEAFNOSUPPORT:
211 case WSAEADDRNOTAVAIL:
212 return EADDRNOTAVAIL;
219 case WSAECONNABORTED:
231 case WSAECONNREFUSED:
235 case WSAEHOSTUNREACH:
242 int inet_aton(const char *cp, struct in_addr *ia)
244 uint32_t addr = inet_addr(cp);
245 if (addr == 0xffffffff) {
252 void qemu_set_cloexec(int fd)
256 /* Offset between 1/1/1601 and 1/1/1970 in 100 nanosec units */
257 #define _W32_FT_OFFSET (116444736000000000ULL)
259 int qemu_gettimeofday(qemu_timeval *tp)
262 unsigned long long ns100; /*time since 1 Jan 1601 in 100ns units */
267 GetSystemTimeAsFileTime (&_now.ft);
268 tp->tv_usec=(long)((_now.ns100 / 10ULL) % 1000000ULL );
269 tp->tv_sec= (long)((_now.ns100 - _W32_FT_OFFSET) / 10000000ULL);
271 /* Always return 0 as per Open Group Base Specifications Issue 6.
272 Do not set errno on error. */
276 int qemu_get_thread_id(void)
278 return GetCurrentThreadId();
282 qemu_get_local_state_pathname(const char *relative_pathname)
285 char base_path[MAX_PATH+1] = "";
287 result = SHGetFolderPath(NULL, CSIDL_COMMON_APPDATA, NULL,
288 /* SHGFP_TYPE_CURRENT */ 0, base_path);
289 if (result != S_OK) {
290 /* misconfigured environment */
291 g_critical("CSIDL_COMMON_APPDATA unavailable: %ld", (long)result);
294 return g_strdup_printf("%s" G_DIR_SEPARATOR_S "%s", base_path,
298 void qemu_set_tty_echo(int fd, bool echo)
300 HANDLE handle = (HANDLE)_get_osfhandle(fd);
303 if (handle == INVALID_HANDLE_VALUE) {
307 GetConsoleMode(handle, &dwMode);
310 SetConsoleMode(handle, dwMode | ENABLE_ECHO_INPUT | ENABLE_LINE_INPUT);
312 SetConsoleMode(handle,
313 dwMode & ~(ENABLE_ECHO_INPUT | ENABLE_LINE_INPUT));
317 static char exec_dir[PATH_MAX];
319 void qemu_init_exec_dir(const char *argv0)
326 len = GetModuleFileName(NULL, buf, sizeof(buf) - 1);
333 while (p != buf && *p != '\\') {
337 if (access(buf, R_OK) == 0) {
338 pstrcpy(exec_dir, sizeof(exec_dir), buf);
342 char *qemu_get_exec_dir(void)
344 return g_strdup(exec_dir);
348 * The original implementation of g_poll from glib has a problem on Windows
349 * when using timeouts < 10 ms.
351 * Whenever g_poll is called with timeout < 10 ms, it does a quick poll instead
352 * of wait. This causes significant performance degradation of QEMU.
354 * The following code is a copy of the original code from glib/gpoll.c
355 * (glib commit 20f4d1820b8d4d0fc4447188e33efffd6d4a88d8 from 2014-02-19).
356 * Some debug code was removed and the code was reformatted.
357 * All other code modifications are marked with 'QEMU'.
361 * gpoll.c: poll(2) abstraction
362 * Copyright 1998 Owen Taylor
363 * Copyright 2008 Red Hat, Inc.
365 * This library is free software; you can redistribute it and/or
366 * modify it under the terms of the GNU Lesser General Public
367 * License as published by the Free Software Foundation; either
368 * version 2 of the License, or (at your option) any later version.
370 * This library is distributed in the hope that it will be useful,
371 * but WITHOUT ANY WARRANTY; without even the implied warranty of
372 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
373 * Lesser General Public License for more details.
375 * You should have received a copy of the GNU Lesser General Public
376 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
379 static int poll_rest(gboolean poll_msgs, HANDLE *handles, gint nhandles,
380 GPollFD *fds, guint nfds, gint timeout)
387 /* Wait for either messages or handles
388 * -> Use MsgWaitForMultipleObjectsEx
390 ready = MsgWaitForMultipleObjectsEx(nhandles, handles, timeout,
391 QS_ALLINPUT, MWMO_ALERTABLE);
393 if (ready == WAIT_FAILED) {
394 gchar *emsg = g_win32_error_message(GetLastError());
395 g_warning("MsgWaitForMultipleObjectsEx failed: %s", emsg);
398 } else if (nhandles == 0) {
399 /* No handles to wait for, just the timeout */
400 if (timeout == INFINITE) {
403 SleepEx(timeout, TRUE);
404 ready = WAIT_TIMEOUT;
407 /* Wait for just handles
408 * -> Use WaitForMultipleObjectsEx
411 WaitForMultipleObjectsEx(nhandles, handles, FALSE, timeout, TRUE);
412 if (ready == WAIT_FAILED) {
413 gchar *emsg = g_win32_error_message(GetLastError());
414 g_warning("WaitForMultipleObjectsEx failed: %s", emsg);
419 if (ready == WAIT_FAILED) {
421 } else if (ready == WAIT_TIMEOUT || ready == WAIT_IO_COMPLETION) {
423 } else if (poll_msgs && ready == WAIT_OBJECT_0 + nhandles) {
424 for (f = fds; f < &fds[nfds]; ++f) {
425 if (f->fd == G_WIN32_MSG_HANDLE && f->events & G_IO_IN) {
426 f->revents |= G_IO_IN;
430 /* If we have a timeout, or no handles to poll, be satisfied
431 * with just noticing we have messages waiting.
433 if (timeout != 0 || nhandles == 0) {
437 /* If no timeout and handles to poll, recurse to poll them,
440 recursed_result = poll_rest(FALSE, handles, nhandles, fds, nfds, 0);
441 return (recursed_result == -1) ? -1 : 1 + recursed_result;
442 } else if (/* QEMU: removed the following unneeded statement which causes
443 * a compiler warning: ready >= WAIT_OBJECT_0 && */
444 ready < WAIT_OBJECT_0 + nhandles) {
445 for (f = fds; f < &fds[nfds]; ++f) {
446 if ((HANDLE) f->fd == handles[ready - WAIT_OBJECT_0]) {
447 f->revents = f->events;
451 /* If no timeout and polling several handles, recurse to poll
454 if (timeout == 0 && nhandles > 1) {
455 /* Remove the handle that fired */
457 if (ready < nhandles - 1) {
458 for (i = ready - WAIT_OBJECT_0 + 1; i < nhandles; i++) {
459 handles[i-1] = handles[i];
463 recursed_result = poll_rest(FALSE, handles, nhandles, fds, nfds, 0);
464 return (recursed_result == -1) ? -1 : 1 + recursed_result;
472 gint g_poll(GPollFD *fds, guint nfds, gint timeout)
474 HANDLE handles[MAXIMUM_WAIT_OBJECTS];
475 gboolean poll_msgs = FALSE;
480 for (f = fds; f < &fds[nfds]; ++f) {
481 if (f->fd == G_WIN32_MSG_HANDLE && (f->events & G_IO_IN)) {
483 } else if (f->fd > 0) {
484 /* Don't add the same handle several times into the array, as
485 * docs say that is not allowed, even if it actually does seem
490 for (i = 0; i < nhandles; i++) {
491 if (handles[i] == (HANDLE) f->fd) {
497 if (nhandles == MAXIMUM_WAIT_OBJECTS) {
498 g_warning("Too many handles to wait for!\n");
501 handles[nhandles++] = (HANDLE) f->fd;
507 for (f = fds; f < &fds[nfds]; ++f) {
515 /* Polling for several things? */
516 if (nhandles > 1 || (nhandles > 0 && poll_msgs)) {
517 /* First check if one or several of them are immediately
520 retval = poll_rest(poll_msgs, handles, nhandles, fds, nfds, 0);
522 /* If not, and we have a significant timeout, poll again with
523 * timeout then. Note that this will return indication for only
524 * one event, or only for messages. We ignore timeouts less than
525 * ten milliseconds as they are mostly pointless on Windows, the
526 * MsgWaitForMultipleObjectsEx() call will timeout right away
529 * Modification for QEMU: replaced timeout >= 10 by timeout > 0.
531 if (retval == 0 && (timeout == INFINITE || timeout > 0)) {
532 retval = poll_rest(poll_msgs, handles, nhandles,
536 /* Just polling for one thing, so no need to check first if
537 * available immediately
539 retval = poll_rest(poll_msgs, handles, nhandles, fds, nfds, timeout);
543 for (f = fds; f < &fds[nfds]; ++f) {
551 int getpagesize(void)
553 SYSTEM_INFO system_info;
555 GetSystemInfo(&system_info);
556 return system_info.dwPageSize;
559 void os_mem_prealloc(int fd, char *area, size_t memory)
562 size_t pagesize = getpagesize();
564 memory = (memory + pagesize - 1) & -pagesize;
565 for (i = 0; i < memory / pagesize; i++) {
566 memset(area + pagesize * i, 0, 1);
571 /* XXX: put correct support for win32 */
572 int qemu_read_password(char *buf, int buf_size)
576 printf("Password: ");
584 } else if (c == '\n') {
586 } else if (i < (buf_size - 1)) {
595 pid_t qemu_fork(Error **errp)
598 error_setg_errno(errp, errno,
599 "cannot fork child process");
605 int qemu_connect_wrap(int sockfd, const struct sockaddr *addr,
609 ret = connect(sockfd, addr, addrlen);
611 errno = socket_error();
618 int qemu_listen_wrap(int sockfd, int backlog)
621 ret = listen(sockfd, backlog);
623 errno = socket_error();
630 int qemu_bind_wrap(int sockfd, const struct sockaddr *addr,
634 ret = bind(sockfd, addr, addrlen);
636 errno = socket_error();
643 int qemu_socket_wrap(int domain, int type, int protocol)
646 ret = socket(domain, type, protocol);
648 errno = socket_error();
655 int qemu_accept_wrap(int sockfd, struct sockaddr *addr,
659 ret = accept(sockfd, addr, addrlen);
661 errno = socket_error();
668 int qemu_shutdown_wrap(int sockfd, int how)
671 ret = shutdown(sockfd, how);
673 errno = socket_error();
680 int qemu_ioctlsocket_wrap(int fd, int req, void *val)
683 ret = ioctlsocket(fd, req, val);
685 errno = socket_error();
692 int qemu_closesocket_wrap(int fd)
695 ret = closesocket(fd);
697 errno = socket_error();
704 int qemu_getsockopt_wrap(int sockfd, int level, int optname,
705 void *optval, socklen_t *optlen)
708 ret = getsockopt(sockfd, level, optname, optval, optlen);
710 errno = socket_error();
717 int qemu_setsockopt_wrap(int sockfd, int level, int optname,
718 const void *optval, socklen_t optlen)
721 ret = setsockopt(sockfd, level, optname, optval, optlen);
723 errno = socket_error();
730 int qemu_getpeername_wrap(int sockfd, struct sockaddr *addr,
734 ret = getpeername(sockfd, addr, addrlen);
736 errno = socket_error();
743 int qemu_getsockname_wrap(int sockfd, struct sockaddr *addr,
747 ret = getsockname(sockfd, addr, addrlen);
749 errno = socket_error();
756 ssize_t qemu_send_wrap(int sockfd, const void *buf, size_t len, int flags)
759 ret = send(sockfd, buf, len, flags);
761 errno = socket_error();
768 ssize_t qemu_sendto_wrap(int sockfd, const void *buf, size_t len, int flags,
769 const struct sockaddr *addr, socklen_t addrlen)
772 ret = sendto(sockfd, buf, len, flags, addr, addrlen);
774 errno = socket_error();
781 ssize_t qemu_recv_wrap(int sockfd, void *buf, size_t len, int flags)
784 ret = recv(sockfd, buf, len, flags);
786 errno = socket_error();
793 ssize_t qemu_recvfrom_wrap(int sockfd, void *buf, size_t len, int flags,
794 struct sockaddr *addr, socklen_t *addrlen)
797 ret = recvfrom(sockfd, buf, len, flags, addr, addrlen);
799 errno = socket_error();