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 CDECL wine_server_send_fd( int fd );
54 extern int CDECL wine_server_fd_to_handle( int fd, unsigned int access, unsigned int attributes, HANDLE *handle );
55 extern int CDECL wine_server_handle_to_fd( HANDLE handle, unsigned int access, int *unix_fd, unsigned int *options );
56 extern void CDECL wine_server_release_fd( HANDLE 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 /* convert an object handle to a server handle */
93 static inline obj_handle_t wine_server_obj_handle( HANDLE handle )
94 {
95 if ((int)(INT_PTR)handle != (INT_PTR)handle) return 0xfffffff0; /* some invalid handle */
96 return (INT_PTR)handle;
97 }
98
99 /* convert a user handle to a server handle */
100 static inline user_handle_t wine_server_user_handle( HANDLE handle )
101 {
102 return (UINT_PTR)handle;
103 }
104
105 /* convert a server handle to a generic handle */
106 static inline HANDLE wine_server_ptr_handle( obj_handle_t handle )
107 {
108 return (HANDLE)(INT_PTR)(int)handle;
109 }
110
111 /* convert a client pointer to a server client_ptr_t */
112 static inline client_ptr_t wine_server_client_ptr( const void *ptr )
113 {
114 return (client_ptr_t)(ULONG_PTR)ptr;
115 }
116
117 /* convert a server client_ptr_t to a real pointer */
118 static inline void *wine_server_get_ptr( client_ptr_t ptr )
119 {
120 return (void *)(ULONG_PTR)ptr;
121 }
122
123
124 /* macros for server requests */
125
126 #define SERVER_START_REQ(type) \
127 do { \
128 struct __server_request_info __req; \
129 struct type##_request * const req = &__req.u.req.type##_request; \
130 const struct type##_reply * const reply = &__req.u.reply.type##_reply; \
131 memset( &__req.u.req, 0, sizeof(__req.u.req) ); \
132 __req.u.req.request_header.req = REQ_##type; \
133 __req.data_count = 0; \
134 (void)reply; \
135 do
136
137 #define SERVER_END_REQ \
138 while(0); \
139 } while(0)
140
141
142 #endif /* __WINE_WINE_SERVER_H */
143
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