/***********************************************************************
* send_request
*
* Send a request to the server.
*/
static unsigned int send_request( const struct __server_request_info *req )
{
unsigned int i;
int ret;
if (!req->u.req.request_header.request_size)
{
if ((ret = write( ntdll_get_thread_data()->request_fd, &req->u.req,
sizeof(req->u.req) )) == sizeof(req->u.req)) return STATUS_SUCCESS;
}
else
{
struct iovec vec[__SERVER_MAX_DATA+1];
vec[0].iov_base = (void *)&req->u.req;
vec[0].iov_len = sizeof(req->u.req);
for (i = 0; i < req->data_count; i++)
{
vec[i+1].iov_base = (void *)req->data[i].ptr;
vec[i+1].iov_len = req->data[i].size;
}
if ((ret = writev( ntdll_get_thread_data()->request_fd, vec, i+1 )) ==
req->u.req.request_header.request_size + sizeof(req->u.req)) return STATUS_SUCCESS;
}
if (ret >= 0) server_protocol_error( "partial write %d\n", ret );
if (errno == EPIPE) server_abort_thread(0);
if (errno == EFAULT) return STATUS_ACCESS_VIOLATION;
server_protocol_perror( "write" );
}
/***********************************************************************
* server_protocol_error
*/
void server_protocol_error( const char *err, ... )
{
va_list args;
va_start( args, err );
fprintf( stderr, "wine client error:%x: ", GetCurrentThreadId() );
vfprintf( stderr, err, args );
va_end( args );
server_abort_thread(1);
}
/***********************************************************************
* receive_fd
*
* Receive a file descriptor passed from the server.
*/
static int receive_fd( obj_handle_t *handle )
{
struct iovec vec;
int ret, fd;
#ifdef HAVE_STRUCT_MSGHDR_MSG_ACCRIGHTS
struct msghdr msghdr;
fd = -1;
msghdr.msg_accrights = (void *)&fd;
msghdr.msg_accrightslen = sizeof(fd);
#else /* HAVE_STRUCT_MSGHDR_MSG_ACCRIGHTS */
struct msghdr msghdr;
struct cmsg_fd cmsg;
cmsg.header.len = sizeof(cmsg.header) + sizeof(fd);
cmsg.header.level = SOL_SOCKET;
cmsg.header.type = SCM_RIGHTS;
cmsg.fd = -1;
msghdr.msg_control = &cmsg;
msghdr.msg_controllen = sizeof(cmsg.header) + sizeof(fd);
msghdr.msg_flags = 0;
#endif /* HAVE_STRUCT_MSGHDR_MSG_ACCRIGHTS */
msghdr.msg_name = NULL;
msghdr.msg_namelen = 0;
msghdr.msg_iov = &vec;
msghdr.msg_iovlen = 1;
vec.iov_base = (void *)handle;
vec.iov_len = sizeof(*handle);
for (;;)
{
if ((ret = recvmsg( fd_socket, &msghdr, 0 )) > 0)
{
#ifndef HAVE_STRUCT_MSGHDR_MSG_ACCRIGHTS
fd = cmsg.fd;
#endif
if (fd != -1) fcntl( fd, F_SETFD, 1 ); /* set close on exec flag */
return fd;
}
if (!ret) break;
if (errno == EINTR) continue;
if (errno == EPIPE) break;
server_protocol_perror("recvmsg");
}
/* the server closed the connection; time to die... */
server_abort_thread(0);
}
/***********************************************************************
* wine_server_send_fd (NTDLL.@)
*
* Send a file descriptor to the server.
*
* PARAMS
* fd [I] file descriptor to send
*
* RETURNS
* nothing
*/
void CDECL wine_server_send_fd( int fd )
{
#ifndef HAVE_STRUCT_MSGHDR_MSG_ACCRIGHTS
struct cmsg_fd cmsg;
#endif
struct send_fd data;
struct msghdr msghdr;
struct iovec vec;
int ret;
vec.iov_base = (void *)&data;
vec.iov_len = sizeof(data);
msghdr.msg_name = NULL;
msghdr.msg_namelen = 0;
msghdr.msg_iov = &vec;
msghdr.msg_iovlen = 1;
#ifdef HAVE_STRUCT_MSGHDR_MSG_ACCRIGHTS
msghdr.msg_accrights = (void *)&fd;
msghdr.msg_accrightslen = sizeof(fd);
#else /* HAVE_STRUCT_MSGHDR_MSG_ACCRIGHTS */
cmsg.header.len = sizeof(cmsg.header) + sizeof(fd);
cmsg.header.level = SOL_SOCKET;
cmsg.header.type = SCM_RIGHTS;
cmsg.fd = fd;
msghdr.msg_control = &cmsg;
msghdr.msg_controllen = sizeof(cmsg.header) + sizeof(fd);
msghdr.msg_flags = 0;
#endif /* HAVE_STRUCT_MSGHDR_MSG_ACCRIGHTS */
data.tid = GetCurrentThreadId();
data.fd = fd;
for (;;)
{
if ((ret = sendmsg( fd_socket, &msghdr, 0 )) == sizeof(data)) return;
if (ret >= 0) server_protocol_error( "partial write %d\n", ret );
if (errno == EINTR) continue;
if (errno == EPIPE) server_abort_thread(0);
server_protocol_perror( "sendmsg" );
}
}
/***********************************************************************
* read_reply_data
*
* Read data from the reply buffer; helper for wait_reply.
*/
static void read_reply_data( void *buffer, size_t size )
{
int ret;
for (;;)
{
if ((ret = read( ntdll_get_thread_data()->reply_fd, buffer, size )) > 0)
{
if (!(size -= ret)) return;
buffer = (char *)buffer + ret;
continue;
}
if (!ret) break;
if (errno == EINTR) continue;
if (errno == EPIPE) break;
server_protocol_perror("read");
}
/* the server closed the connection; time to die... */
server_abort_thread(0);
}
/***********************************************************************
* server_protocol_perror
*/
void server_protocol_perror( const char *err )
{
fprintf( stderr, "wine client error:%x: ", GetCurrentThreadId() );
perror( err );
server_abort_thread(1);
}
/**********************************************************************
* quit_handler
*
* Handler for SIGQUIT.
*/
static HANDLER_DEF(quit_handler)
{
server_abort_thread(0);
}
