* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
- *
- * The implementation of g_poll (functions poll_rest, g_poll) at the end of
- * this file are based on code from GNOME glib-2 and use a different license,
- * see the license comment there.
*/
#include "qemu/osdep.h"
#include <windows.h>
-#include "qemu-common.h"
#include "qapi/error.h"
-#include "sysemu/sysemu.h"
#include "qemu/main-loop.h"
#include "trace.h"
#include "qemu/sockets.h"
#include "qemu/cutils.h"
-
-/* this must come after including "trace.h" */
-#include <shlobj.h>
-
-void *qemu_oom_check(void *ptr)
-{
- if (ptr == NULL) {
- fprintf(stderr, "Failed to allocate memory: %lu\n", GetLastError());
- abort();
- }
- return ptr;
-}
-
-void *qemu_try_memalign(size_t alignment, size_t size)
-{
- void *ptr;
-
- if (!size) {
- abort();
- }
- ptr = VirtualAlloc(NULL, size, MEM_COMMIT, PAGE_READWRITE);
- trace_qemu_memalign(alignment, size, ptr);
- return ptr;
-}
-
-void *qemu_memalign(size_t alignment, size_t size)
-{
- return qemu_oom_check(qemu_try_memalign(alignment, size));
-}
+#include "qemu/error-report.h"
+#include <malloc.h>
static int get_allocation_granularity(void)
{
return system_info.dwAllocationGranularity;
}
-void *qemu_anon_ram_alloc(size_t size, uint64_t *align, bool shared)
+void *qemu_anon_ram_alloc(size_t size, uint64_t *align, bool shared,
+ bool noreserve)
{
void *ptr;
+ if (noreserve) {
+ /*
+ * We need a MEM_COMMIT before accessing any memory in a MEM_RESERVE
+ * area; we cannot easily mimic POSIX MAP_NORESERVE semantics.
+ */
+ error_report("Skipping reservation of swap space is not supported.");
+ return NULL;
+ }
+
ptr = VirtualAlloc(NULL, size, MEM_COMMIT, PAGE_READWRITE);
trace_qemu_anon_ram_alloc(size, ptr);
return ptr;
}
-void qemu_vfree(void *ptr)
-{
- trace_qemu_vfree(ptr);
- if (ptr) {
- VirtualFree(ptr, 0, MEM_RELEASE);
- }
-}
-
void qemu_anon_ram_free(void *ptr, size_t size)
{
trace_qemu_anon_ram_free(ptr, size);
}
}
-void qemu_set_block(int fd)
+void qemu_socket_set_block(int fd)
{
unsigned long opt = 0;
- WSAEventSelect(fd, NULL, 0);
+ qemu_socket_unselect(fd, NULL);
ioctlsocket(fd, FIONBIO, &opt);
}
-int qemu_try_set_nonblock(int fd)
+int qemu_socket_try_set_nonblock(int fd)
{
unsigned long opt = 1;
if (ioctlsocket(fd, FIONBIO, &opt) != NO_ERROR) {
return -socket_error();
}
- qemu_fd_register(fd);
return 0;
}
-void qemu_set_nonblock(int fd)
+void qemu_socket_set_nonblock(int fd)
{
- (void)qemu_try_set_nonblock(fd);
+ (void)qemu_socket_try_set_nonblock(fd);
}
int socket_set_fast_reuse(int fd)
{
}
-/* Offset between 1/1/1601 and 1/1/1970 in 100 nanosec units */
-#define _W32_FT_OFFSET (116444736000000000ULL)
-
-int qemu_gettimeofday(qemu_timeval *tp)
-{
- union {
- unsigned long long ns100; /*time since 1 Jan 1601 in 100ns units */
- FILETIME ft;
- } _now;
-
- if(tp) {
- GetSystemTimeAsFileTime (&_now.ft);
- tp->tv_usec=(long)((_now.ns100 / 10ULL) % 1000000ULL );
- tp->tv_sec= (long)((_now.ns100 - _W32_FT_OFFSET) / 10000000ULL);
- }
- /* Always return 0 as per Open Group Base Specifications Issue 6.
- Do not set errno on error. */
- return 0;
-}
-
int qemu_get_thread_id(void)
{
return GetCurrentThreadId();
}
char *
-qemu_get_local_state_pathname(const char *relative_pathname)
+qemu_get_local_state_dir(void)
{
- HRESULT result;
- char base_path[MAX_PATH+1] = "";
+ const char * const *data_dirs = g_get_system_data_dirs();
- result = SHGetFolderPath(NULL, CSIDL_COMMON_APPDATA, NULL,
- /* SHGFP_TYPE_CURRENT */ 0, base_path);
- if (result != S_OK) {
- /* misconfigured environment */
- g_critical("CSIDL_COMMON_APPDATA unavailable: %ld", (long)result);
- abort();
- }
- return g_strdup_printf("%s" G_DIR_SEPARATOR_S "%s", base_path,
- relative_pathname);
+ g_assert(data_dirs && data_dirs[0]);
+
+ return g_strdup(data_dirs[0]);
}
void qemu_set_tty_echo(int fd, bool echo)
}
}
-static const char *exec_dir;
-
-void qemu_init_exec_dir(const char *argv0)
-{
-
- char *p;
- char buf[MAX_PATH];
- DWORD len;
-
- if (exec_dir) {
- return;
- }
-
- len = GetModuleFileName(NULL, buf, sizeof(buf) - 1);
- if (len == 0) {
- return;
- }
-
- buf[len] = 0;
- p = buf + len - 1;
- while (p != buf && *p != '\\') {
- p--;
- }
- *p = 0;
- if (access(buf, R_OK) == 0) {
- exec_dir = g_strdup(buf);
- } else {
- exec_dir = CONFIG_BINDIR;
- }
-}
-
-const char *qemu_get_exec_dir(void)
-{
- return exec_dir;
-}
-
-#if !GLIB_CHECK_VERSION(2, 50, 0)
-/*
- * The original implementation of g_poll from glib has a problem on Windows
- * when using timeouts < 10 ms.
- *
- * Whenever g_poll is called with timeout < 10 ms, it does a quick poll instead
- * of wait. This causes significant performance degradation of QEMU.
- *
- * The following code is a copy of the original code from glib/gpoll.c
- * (glib commit 20f4d1820b8d4d0fc4447188e33efffd6d4a88d8 from 2014-02-19).
- * Some debug code was removed and the code was reformatted.
- * All other code modifications are marked with 'QEMU'.
- */
-
-/*
- * gpoll.c: poll(2) abstraction
- * Copyright 1998 Owen Taylor
- * Copyright 2008 Red Hat, Inc.
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, see <http://www.gnu.org/licenses/>.
- */
-
-static int poll_rest(gboolean poll_msgs, HANDLE *handles, gint nhandles,
- GPollFD *fds, guint nfds, gint timeout)
-{
- DWORD ready;
- GPollFD *f;
- int recursed_result;
-
- if (poll_msgs) {
- /* Wait for either messages or handles
- * -> Use MsgWaitForMultipleObjectsEx
- */
- ready = MsgWaitForMultipleObjectsEx(nhandles, handles, timeout,
- QS_ALLINPUT, MWMO_ALERTABLE);
-
- if (ready == WAIT_FAILED) {
- gchar *emsg = g_win32_error_message(GetLastError());
- g_warning("MsgWaitForMultipleObjectsEx failed: %s", emsg);
- g_free(emsg);
- }
- } else if (nhandles == 0) {
- /* No handles to wait for, just the timeout */
- if (timeout == INFINITE) {
- ready = WAIT_FAILED;
- } else {
- SleepEx(timeout, TRUE);
- ready = WAIT_TIMEOUT;
- }
- } else {
- /* Wait for just handles
- * -> Use WaitForMultipleObjectsEx
- */
- ready =
- WaitForMultipleObjectsEx(nhandles, handles, FALSE, timeout, TRUE);
- if (ready == WAIT_FAILED) {
- gchar *emsg = g_win32_error_message(GetLastError());
- g_warning("WaitForMultipleObjectsEx failed: %s", emsg);
- g_free(emsg);
- }
- }
-
- if (ready == WAIT_FAILED) {
- return -1;
- } else if (ready == WAIT_TIMEOUT || ready == WAIT_IO_COMPLETION) {
- return 0;
- } else if (poll_msgs && ready == WAIT_OBJECT_0 + nhandles) {
- for (f = fds; f < &fds[nfds]; ++f) {
- if (f->fd == G_WIN32_MSG_HANDLE && f->events & G_IO_IN) {
- f->revents |= G_IO_IN;
- }
- }
-
- /* If we have a timeout, or no handles to poll, be satisfied
- * with just noticing we have messages waiting.
- */
- if (timeout != 0 || nhandles == 0) {
- return 1;
- }
-
- /* If no timeout and handles to poll, recurse to poll them,
- * too.
- */
- recursed_result = poll_rest(FALSE, handles, nhandles, fds, nfds, 0);
- return (recursed_result == -1) ? -1 : 1 + recursed_result;
- } else if (/* QEMU: removed the following unneeded statement which causes
- * a compiler warning: ready >= WAIT_OBJECT_0 && */
- ready < WAIT_OBJECT_0 + nhandles) {
- for (f = fds; f < &fds[nfds]; ++f) {
- if ((HANDLE) f->fd == handles[ready - WAIT_OBJECT_0]) {
- f->revents = f->events;
- }
- }
-
- /* If no timeout and polling several handles, recurse to poll
- * the rest of them.
- */
- if (timeout == 0 && nhandles > 1) {
- /* Remove the handle that fired */
- int i;
- for (i = ready - WAIT_OBJECT_0 + 1; i < nhandles; i++) {
- handles[i-1] = handles[i];
- }
- nhandles--;
- recursed_result = poll_rest(FALSE, handles, nhandles, fds, nfds, 0);
- return (recursed_result == -1) ? -1 : 1 + recursed_result;
- }
- return 1;
- }
-
- return 0;
-}
-
-gint g_poll(GPollFD *fds, guint nfds, gint timeout)
-{
- HANDLE handles[MAXIMUM_WAIT_OBJECTS];
- gboolean poll_msgs = FALSE;
- GPollFD *f;
- gint nhandles = 0;
- int retval;
-
- for (f = fds; f < &fds[nfds]; ++f) {
- if (f->fd == G_WIN32_MSG_HANDLE && (f->events & G_IO_IN)) {
- poll_msgs = TRUE;
- } else if (f->fd > 0) {
- /* Don't add the same handle several times into the array, as
- * docs say that is not allowed, even if it actually does seem
- * to work.
- */
- gint i;
-
- for (i = 0; i < nhandles; i++) {
- if (handles[i] == (HANDLE) f->fd) {
- break;
- }
- }
-
- if (i == nhandles) {
- if (nhandles == MAXIMUM_WAIT_OBJECTS) {
- g_warning("Too many handles to wait for!\n");
- break;
- } else {
- handles[nhandles++] = (HANDLE) f->fd;
- }
- }
- }
- }
-
- for (f = fds; f < &fds[nfds]; ++f) {
- f->revents = 0;
- }
-
- if (timeout == -1) {
- timeout = INFINITE;
- }
-
- /* Polling for several things? */
- if (nhandles > 1 || (nhandles > 0 && poll_msgs)) {
- /* First check if one or several of them are immediately
- * available
- */
- retval = poll_rest(poll_msgs, handles, nhandles, fds, nfds, 0);
-
- /* If not, and we have a significant timeout, poll again with
- * timeout then. Note that this will return indication for only
- * one event, or only for messages. We ignore timeouts less than
- * ten milliseconds as they are mostly pointless on Windows, the
- * MsgWaitForMultipleObjectsEx() call will timeout right away
- * anyway.
- *
- * Modification for QEMU: replaced timeout >= 10 by timeout > 0.
- */
- if (retval == 0 && (timeout == INFINITE || timeout > 0)) {
- retval = poll_rest(poll_msgs, handles, nhandles,
- fds, nfds, timeout);
- }
- } else {
- /* Just polling for one thing, so no need to check first if
- * available immediately
- */
- retval = poll_rest(poll_msgs, handles, nhandles, fds, nfds, timeout);
- }
-
- if (retval == -1) {
- for (f = fds; f < &fds[nfds]; ++f) {
- f->revents = 0;
- }
- }
-
- return retval;
-}
-#endif
-
int getpagesize(void)
{
SYSTEM_INFO system_info;
return system_info.dwPageSize;
}
-void os_mem_prealloc(int fd, char *area, size_t memory, int smp_cpus,
- Error **errp)
+void qemu_prealloc_mem(int fd, char *area, size_t sz, int max_threads,
+ ThreadContext *tc, Error **errp)
{
int i;
- size_t pagesize = qemu_real_host_page_size;
+ size_t pagesize = qemu_real_host_page_size();
- memory = (memory + pagesize - 1) & -pagesize;
- for (i = 0; i < memory / pagesize; i++) {
+ sz = (sz + pagesize - 1) & -pagesize;
+ for (i = 0; i < sz / pagesize; i++) {
memset(area + pagesize * i, 0, 1);
}
}
}
-pid_t qemu_fork(Error **errp)
+bool qemu_socket_select(int sockfd, WSAEVENT hEventObject,
+ long lNetworkEvents, Error **errp)
{
- errno = ENOSYS;
- error_setg_errno(errp, errno,
- "cannot fork child process");
- return -1;
+ SOCKET s = _get_osfhandle(sockfd);
+
+ if (errp == NULL) {
+ errp = &error_warn;
+ }
+
+ if (s == INVALID_SOCKET) {
+ error_setg(errp, "invalid socket fd=%d", sockfd);
+ return false;
+ }
+
+ if (WSAEventSelect(s, hEventObject, lNetworkEvents) != 0) {
+ error_setg_win32(errp, WSAGetLastError(), "failed to WSAEventSelect()");
+ return false;
+ }
+
+ return true;
}
+bool qemu_socket_unselect(int sockfd, Error **errp)
+{
+ return qemu_socket_select(sockfd, NULL, 0, errp);
+}
#undef connect
int qemu_connect_wrap(int sockfd, const struct sockaddr *addr,
socklen_t addrlen)
{
int ret;
- ret = connect(sockfd, addr, addrlen);
+ SOCKET s = _get_osfhandle(sockfd);
+
+ if (s == INVALID_SOCKET) {
+ return -1;
+ }
+
+ ret = connect(s, addr, addrlen);
if (ret < 0) {
if (WSAGetLastError() == WSAEWOULDBLOCK) {
errno = EINPROGRESS;
int qemu_listen_wrap(int sockfd, int backlog)
{
int ret;
- ret = listen(sockfd, backlog);
+ SOCKET s = _get_osfhandle(sockfd);
+
+ if (s == INVALID_SOCKET) {
+ return -1;
+ }
+
+ ret = listen(s, backlog);
if (ret < 0) {
errno = socket_error();
}
socklen_t addrlen)
{
int ret;
- ret = bind(sockfd, addr, addrlen);
+ SOCKET s = _get_osfhandle(sockfd);
+
+ if (s == INVALID_SOCKET) {
+ return -1;
+ }
+
+ ret = bind(s, addr, addrlen);
if (ret < 0) {
errno = socket_error();
}
}
+#undef close
+int qemu_close_wrap(int fd)
+{
+ int ret;
+ DWORD flags = 0;
+ SOCKET s = INVALID_SOCKET;
+
+ if (fd_is_socket(fd)) {
+ s = _get_osfhandle(fd);
+
+ /*
+ * If we were to just call _close on the descriptor, it would close the
+ * HANDLE, but it wouldn't free any of the resources associated to the
+ * SOCKET, and we can't call _close after calling closesocket, because
+ * closesocket has already closed the HANDLE, and _close would attempt to
+ * close the HANDLE again, resulting in a double free. We can however
+ * protect the HANDLE from actually being closed long enough to close the
+ * file descriptor, then close the socket itself.
+ */
+ if (!GetHandleInformation((HANDLE)s, &flags)) {
+ errno = EACCES;
+ return -1;
+ }
+
+ if (!SetHandleInformation((HANDLE)s, HANDLE_FLAG_PROTECT_FROM_CLOSE, HANDLE_FLAG_PROTECT_FROM_CLOSE)) {
+ errno = EACCES;
+ return -1;
+ }
+ }
+
+ ret = close(fd);
+
+ if (s != INVALID_SOCKET && !SetHandleInformation((HANDLE)s, flags, flags)) {
+ errno = EACCES;
+ return -1;
+ }
+
+ /*
+ * close() returns EBADF since we PROTECT_FROM_CLOSE the underlying handle,
+ * but the FD is actually freed
+ */
+ if (ret < 0 && (s == INVALID_SOCKET || errno != EBADF)) {
+ return ret;
+ }
+
+ if (s != INVALID_SOCKET) {
+ ret = closesocket(s);
+ if (ret < 0) {
+ errno = socket_error();
+ }
+ }
+
+ return ret;
+}
+
+
#undef socket
int qemu_socket_wrap(int domain, int type, int protocol)
{
- int ret;
- ret = socket(domain, type, protocol);
- if (ret < 0) {
+ SOCKET s;
+ int fd;
+
+ s = socket(domain, type, protocol);
+ if (s == -1) {
errno = socket_error();
+ return -1;
}
- return ret;
+
+ fd = _open_osfhandle(s, _O_BINARY);
+ if (fd < 0) {
+ closesocket(s);
+ /* _open_osfhandle may not set errno, and closesocket() may override it */
+ errno = ENOMEM;
+ }
+
+ return fd;
}
int qemu_accept_wrap(int sockfd, struct sockaddr *addr,
socklen_t *addrlen)
{
- int ret;
- ret = accept(sockfd, addr, addrlen);
- if (ret < 0) {
+ int fd;
+ SOCKET s = _get_osfhandle(sockfd);
+
+ if (s == INVALID_SOCKET) {
+ return -1;
+ }
+
+ s = accept(s, addr, addrlen);
+ if (s == -1) {
errno = socket_error();
+ return -1;
}
- return ret;
+
+ fd = _open_osfhandle(s, _O_BINARY);
+ if (fd < 0) {
+ closesocket(s);
+ /* _open_osfhandle may not set errno, and closesocket() may override it */
+ errno = ENOMEM;
+ }
+
+ return fd;
}
int qemu_shutdown_wrap(int sockfd, int how)
{
int ret;
- ret = shutdown(sockfd, how);
+ SOCKET s = _get_osfhandle(sockfd);
+
+ if (s == INVALID_SOCKET) {
+ return -1;
+ }
+
+ ret = shutdown(s, how);
if (ret < 0) {
errno = socket_error();
}
int qemu_ioctlsocket_wrap(int fd, int req, void *val)
{
int ret;
- ret = ioctlsocket(fd, req, val);
- if (ret < 0) {
- errno = socket_error();
- }
- return ret;
-}
+ SOCKET s = _get_osfhandle(fd);
+ if (s == INVALID_SOCKET) {
+ return -1;
+ }
-#undef closesocket
-int qemu_closesocket_wrap(int fd)
-{
- int ret;
- ret = closesocket(fd);
+ ret = ioctlsocket(s, req, val);
if (ret < 0) {
errno = socket_error();
}
void *optval, socklen_t *optlen)
{
int ret;
- ret = getsockopt(sockfd, level, optname, optval, optlen);
+ SOCKET s = _get_osfhandle(sockfd);
+
+ if (s == INVALID_SOCKET) {
+ return -1;
+ }
+
+ ret = getsockopt(s, level, optname, optval, optlen);
if (ret < 0) {
errno = socket_error();
}
const void *optval, socklen_t optlen)
{
int ret;
- ret = setsockopt(sockfd, level, optname, optval, optlen);
+ SOCKET s = _get_osfhandle(sockfd);
+
+ if (s == INVALID_SOCKET) {
+ return -1;
+ }
+
+ ret = setsockopt(s, level, optname, optval, optlen);
if (ret < 0) {
errno = socket_error();
}
socklen_t *addrlen)
{
int ret;
- ret = getpeername(sockfd, addr, addrlen);
+ SOCKET s = _get_osfhandle(sockfd);
+
+ if (s == INVALID_SOCKET) {
+ return -1;
+ }
+
+ ret = getpeername(s, addr, addrlen);
if (ret < 0) {
errno = socket_error();
}
socklen_t *addrlen)
{
int ret;
- ret = getsockname(sockfd, addr, addrlen);
+ SOCKET s = _get_osfhandle(sockfd);
+
+ if (s == INVALID_SOCKET) {
+ return -1;
+ }
+
+ ret = getsockname(s, addr, addrlen);
if (ret < 0) {
errno = socket_error();
}
ssize_t qemu_send_wrap(int sockfd, const void *buf, size_t len, int flags)
{
int ret;
- ret = send(sockfd, buf, len, flags);
+ SOCKET s = _get_osfhandle(sockfd);
+
+ if (s == INVALID_SOCKET) {
+ return -1;
+ }
+
+ ret = send(s, buf, len, flags);
if (ret < 0) {
errno = socket_error();
}
const struct sockaddr *addr, socklen_t addrlen)
{
int ret;
- ret = sendto(sockfd, buf, len, flags, addr, addrlen);
+ SOCKET s = _get_osfhandle(sockfd);
+
+ if (s == INVALID_SOCKET) {
+ return -1;
+ }
+
+ ret = sendto(s, buf, len, flags, addr, addrlen);
if (ret < 0) {
errno = socket_error();
}
ssize_t qemu_recv_wrap(int sockfd, void *buf, size_t len, int flags)
{
int ret;
- ret = recv(sockfd, buf, len, flags);
+ SOCKET s = _get_osfhandle(sockfd);
+
+ if (s == INVALID_SOCKET) {
+ return -1;
+ }
+
+ ret = recv(s, buf, len, flags);
if (ret < 0) {
errno = socket_error();
}
struct sockaddr *addr, socklen_t *addrlen)
{
int ret;
- ret = recvfrom(sockfd, buf, len, flags, addr, addrlen);
+ SOCKET s = _get_osfhandle(sockfd);
+
+ if (s == INVALID_SOCKET) {
+ return -1;
+ }
+
+ ret = recvfrom(s, buf, len, flags, addr, addrlen);
if (ret < 0) {
errno = socket_error();
}
return true;
}
-char *qemu_get_host_name(Error **errp)
-{
- wchar_t tmp[MAX_COMPUTERNAME_LENGTH + 1];
- DWORD size = G_N_ELEMENTS(tmp);
-
- if (GetComputerNameW(tmp, &size) == 0) {
- error_setg_win32(errp, GetLastError(), "failed close handle");
- return NULL;
- }
-
- return g_utf16_to_utf8(tmp, size, NULL, NULL, NULL);
-}
-
size_t qemu_get_host_physmem(void)
{
MEMORYSTATUSEX statex;
}
return 0;
}
+
+int qemu_msync(void *addr, size_t length, int fd)
+{
+ /**
+ * Perform the sync based on the file descriptor
+ * The sync range will most probably be wider than the one
+ * requested - but it will still get the job done
+ */
+ return qemu_fdatasync(fd);
+}
projects / mirror_qemu.git / blobdiff