include/wine/server.h

/*
 * Definitions for the client side of the Wine server communication
 *
 * Copyright (C) 1998 Alexandre Julliard
 */

#ifndef __WINE_WINE_SERVER_H
#define __WINE_WINE_SERVER_H

#include "thread.h"
#include "ntddk.h"
#include "wine/exception.h"
#include "wine/server_protocol.h"

/* client communication functions */

struct __server_iovec
{
    const void  *ptr;
    unsigned int size;
};

#define __SERVER_MAX_DATA 4

struct __server_request_info
{
    union
    {
        union generic_request req;    /* request structure */
        union generic_reply   reply;  /* reply structure */
    } u;
    size_t                size;       /* size of request structure */
    unsigned int          data_count; /* count of request data pointers */
    void                 *reply_data; /* reply data pointer */
    struct __server_iovec data[__SERVER_MAX_DATA];  /* request variable size data */
};

extern unsigned int wine_server_call( void *req_ptr );
extern void wine_server_send_fd( int fd );
extern int wine_server_recv_fd( handle_t handle );

/* do a server call and set the last error code */
inline static unsigned int wine_server_call_err( void *req_ptr )
{
    unsigned int res = wine_server_call( req_ptr );
    if (res) SetLastError( RtlNtStatusToDosError(res) );
    return res;
}

/* get the size of the variable part of the returned reply */
inline static size_t wine_server_reply_size( const void *reply )
{
    return ((struct reply_header *)reply)->reply_size;
}

/* add some data to be sent along with the request */
inline static void wine_server_add_data( void *req_ptr, const void *ptr, unsigned int size )
{
    struct __server_request_info * const req = req_ptr;
    if (size)
    {
        req->data[req->data_count].ptr = ptr;
        req->data[req->data_count++].size = size;
        req->u.req.request_header.request_size += size;
    }
}

/* set the pointer and max size for the reply var data */
inline static void wine_server_set_reply( void *req_ptr, void *ptr, unsigned int max_size )
{
    struct __server_request_info * const req = req_ptr;
    req->reply_data = ptr;
    req->u.req.request_header.reply_size = max_size;
}


/* macros for server requests */

#define SERVER_START_REQ(type) \
    do { \
        struct __server_request_info __req; \
        struct type##_request * const req = &__req.u.req.type##_request; \
        const struct type##_reply * const reply = &__req.u.reply.type##_reply; \
        __req.u.req.request_header.req = REQ_##type; \
        __req.u.req.request_header.request_size = 0; \
        __req.u.req.request_header.reply_size = 0; \
        __req.size = sizeof(*req); \
        __req.data_count = 0; \
        (void)reply; \
        do

#define SERVER_END_REQ \
        while(0); \
    } while(0)


/* non-exported functions */
extern void server_protocol_error( const char *err, ... ) WINE_NORETURN;
extern void server_protocol_perror( const char *err ) WINE_NORETURN;
extern const char *get_config_dir(void);
extern void CLIENT_InitServer(void);
extern void CLIENT_InitThread(void);
extern void CLIENT_BootDone( int debug_level );
extern int CLIENT_IsBootThread(void);

#endif  /* __WINE_WINE_SERVER_H */