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Wine Cross Reference
wine/include/wine/server.h

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  1 /*
  2  * Definitions for the client side of the Wine server communication
  3  *
  4  * Copyright (C) 1998 Alexandre Julliard
  5  *
  6  * This library is free software; you can redistribute it and/or
  7  * modify it under the terms of the GNU Lesser General Public
  8  * License as published by the Free Software Foundation; either
  9  * version 2.1 of the License, or (at your option) any later version.
 10  *
 11  * This library is distributed in the hope that it will be useful,
 12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
 13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 14  * Lesser General Public License for more details.
 15  *
 16  * You should have received a copy of the GNU Lesser General Public
 17  * License along with this library; if not, write to the Free Software
 18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
 19  */
 20 
 21 #ifndef __WINE_WINE_SERVER_H
 22 #define __WINE_WINE_SERVER_H
 23 
 24 #include <stdarg.h>
 25 #include <windef.h>
 26 #include <winbase.h>
 27 #include <winternl.h>
 28 #include <wine/server_protocol.h>
 29 
 30 /* client communication functions */
 31 
 32 struct __server_iovec
 33 {
 34     const void  *ptr;
 35     data_size_t  size;
 36 };
 37 
 38 #define __SERVER_MAX_DATA 5
 39 
 40 struct __server_request_info
 41 {
 42     union
 43     {
 44         union generic_request req;    /* request structure */
 45         union generic_reply   reply;  /* reply structure */
 46     } u;
 47     unsigned int          data_count; /* count of request data pointers */
 48     void                 *reply_data; /* reply data pointer */
 49     struct __server_iovec data[__SERVER_MAX_DATA];  /* request variable size data */
 50 };
 51 
 52 extern unsigned int wine_server_call( void *req_ptr );
 53 extern void wine_server_send_fd( int fd );
 54 extern int wine_server_fd_to_handle( int fd, unsigned int access, unsigned int attributes, obj_handle_t *handle );
 55 extern int wine_server_handle_to_fd( obj_handle_t handle, unsigned int access, int *unix_fd, unsigned int *options );
 56 extern void wine_server_release_fd( obj_handle_t handle, int unix_fd );
 57 
 58 /* do a server call and set the last error code */
 59 static inline unsigned int wine_server_call_err( void *req_ptr )
 60 {
 61     unsigned int res = wine_server_call( req_ptr );
 62     if (res) SetLastError( RtlNtStatusToDosError(res) );
 63     return res;
 64 }
 65 
 66 /* get the size of the variable part of the returned reply */
 67 static inline data_size_t wine_server_reply_size( const void *reply )
 68 {
 69     return ((const struct reply_header *)reply)->reply_size;
 70 }
 71 
 72 /* add some data to be sent along with the request */
 73 static inline void wine_server_add_data( void *req_ptr, const void *ptr, data_size_t size )
 74 {
 75     struct __server_request_info * const req = req_ptr;
 76     if (size)
 77     {
 78         req->data[req->data_count].ptr = ptr;
 79         req->data[req->data_count++].size = size;
 80         req->u.req.request_header.request_size += size;
 81     }
 82 }
 83 
 84 /* set the pointer and max size for the reply var data */
 85 static inline void wine_server_set_reply( void *req_ptr, void *ptr, data_size_t max_size )
 86 {
 87     struct __server_request_info * const req = req_ptr;
 88     req->reply_data = ptr;
 89     req->u.req.request_header.reply_size = max_size;
 90 }
 91 
 92 
 93 /* macros for server requests */
 94 
 95 #define SERVER_START_REQ(type) \
 96     do { \
 97         struct __server_request_info __req; \
 98         struct type##_request * const req = &__req.u.req.type##_request; \
 99         const struct type##_reply * const reply = &__req.u.reply.type##_reply; \
100         memset( &__req.u.req, 0, sizeof(__req.u.req) ); \
101         __req.u.req.request_header.req = REQ_##type; \
102         __req.data_count = 0; \
103         (void)reply; \
104         do
105 
106 #define SERVER_END_REQ \
107         while(0); \
108     } while(0)
109 
110 
111 #endif  /* __WINE_WINE_SERVER_H */
112 

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