source: trunk/minix/servers/inet/minix3/queryparam.h@ 12

/*      queryparam.h - query program parameters         Author: Kees J. Bot
 *                                                              22 Apr 1994
 */
#ifndef _MINIX__QUERYPARAM_H
#define _MINIX__QUERYPARAM_H

#include <ansi.h>

typedef size_t _mnx_size_t;

struct export_param_list {
        char    *name;          /* "variable", "[", ".field", or NULL. */
        void    *offset;        /* Address of a variable or field offset. */
        size_t  size;           /* Size of the resulting object. */
};

struct export_params {
        struct export_param_list *list; /* List of exported parameters. */
        struct export_params     *next; /* Link several sets of parameters. */
};

#ifdef __STDC__
#define qp_stringize(var)       #var
#define qp_dotstringize(var)    "." #var
#else
#define qp_stringize(var)       "var"
#define qp_dotstringize(var)    ".var"
#endif
#define QP_VARIABLE(var)        { qp_stringize(var), &(var), sizeof(var) }
#define QP_ARRAY(var)           { "[", 0, sizeof((var)[0]) }
#define QP_VECTOR(var,ptr,len)  { qp_stringize(var), &(ptr), -1 },\
                                { "[", &(len), sizeof(*(ptr)) }
#define QP_FIELD(field, type)   { qp_dotstringize(field), \
                                        (void *)offsetof(type, field), \
                                        sizeof(((type *)0)->field) }
#define QP_END()                { 0, 0, 0 }

void qp_export _ARGS((struct export_params *_ex_params));
int queryparam _ARGS((int (*_qgetc) _ARGS((void)), void **_paddress,
                                                        _mnx_size_t *_psize));
_mnx_size_t paramvalue _ARGS((char **_value, void *_address,
                                                        _mnx_size_t _size));
#endif /* _MINIX__QUERYPARAM_H */

/* $PchId: queryparam.h,v 1.1 2005/06/28 14:31:26 philip Exp $ */