diff options
Diffstat (limited to 'util/oslib-win32.c')
| -rw-r--r-- | util/oslib-win32.c | 219 |
1 files changed, 186 insertions, 33 deletions
diff --git a/util/oslib-win32.c b/util/oslib-win32.c index dbd32acc98..7836fb0be3 100644 --- a/util/oslib-win32.c +++ b/util/oslib-win32.c @@ -283,13 +283,20 @@ char *qemu_get_pid_name(pid_t pid) } -bool qemu_socket_select(SOCKET s, WSAEVENT hEventObject, +bool qemu_socket_select(int sockfd, WSAEVENT hEventObject, long lNetworkEvents, Error **errp) { + 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; @@ -298,9 +305,9 @@ bool qemu_socket_select(SOCKET s, WSAEVENT hEventObject, return true; } -bool qemu_socket_unselect(SOCKET s, Error **errp) +bool qemu_socket_unselect(int sockfd, Error **errp) { - return qemu_socket_select(s, NULL, 0, errp); + return qemu_socket_select(sockfd, NULL, 0, errp); } #undef connect @@ -308,7 +315,13 @@ 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; @@ -324,7 +337,13 @@ int qemu_connect_wrap(int sockfd, const struct sockaddr *addr, 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(); } @@ -337,7 +356,13 @@ int qemu_bind_wrap(int sockfd, const struct sockaddr *addr, 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(); } @@ -345,28 +370,108 @@ int qemu_bind_wrap(int sockfd, const struct sockaddr *addr, } -#undef socket -int qemu_socket_wrap(int domain, int type, int protocol) +#undef closesocket +int qemu_closesocket_wrap(int fd) { int ret; - ret = socket(domain, type, protocol); + DWORD flags = 0; + SOCKET s = _get_osfhandle(fd); + + if (s == INVALID_SOCKET) { + return -1; + } + + /* + * 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 (!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 && errno != EBADF) { + return ret; + } + + ret = closesocket(s); if (ret < 0) { errno = socket_error(); } + return ret; } +#undef socket +int qemu_socket_wrap(int domain, int type, int protocol) +{ + SOCKET s; + int fd; + + s = socket(domain, type, protocol); + if (s == -1) { + errno = socket_error(); + return -1; + } + + 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; +} + + #undef accept 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; } @@ -374,7 +479,13 @@ int qemu_accept_wrap(int sockfd, struct sockaddr *addr, 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(); } @@ -386,19 +497,13 @@ int qemu_shutdown_wrap(int sockfd, int how) 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(); } @@ -411,7 +516,13 @@ int qemu_getsockopt_wrap(int sockfd, int level, int optname, 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(); } @@ -424,7 +535,13 @@ int qemu_setsockopt_wrap(int sockfd, int level, int optname, 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(); } @@ -437,7 +554,13 @@ int qemu_getpeername_wrap(int sockfd, struct sockaddr *addr, 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(); } @@ -450,7 +573,13 @@ int qemu_getsockname_wrap(int sockfd, struct sockaddr *addr, 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(); } @@ -462,7 +591,13 @@ int qemu_getsockname_wrap(int sockfd, struct sockaddr *addr, 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(); } @@ -475,7 +610,13 @@ ssize_t qemu_sendto_wrap(int sockfd, const void *buf, size_t len, int flags, 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(); } @@ -487,7 +628,13 @@ ssize_t qemu_sendto_wrap(int sockfd, const void *buf, size_t len, int flags, 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(); } @@ -500,7 +647,13 @@ ssize_t qemu_recvfrom_wrap(int sockfd, void *buf, size_t len, int flags, 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(); } |