servers/inet/minix3/queryparam.h

   1 /*      queryparam.h - query program parameters         Author: Kees J. Bot
   2  *                                                              22 Apr 1994
   3  */
   4 #ifndef _MINIX__QUERYPARAM_H
   5 #define _MINIX__QUERYPARAM_H
   6
   7 #include <ansi.h>
   8
   9 typedef size_t _mnx_size_t;
  10
  11 struct export_param_list {
  12         char    *name;          /* "variable", "[", ".field", or NULL. */
  13         void    *offset;        /* Address of a variable or field offset. */
  14         size_t  size;           /* Size of the resulting object. */
  15 };
  16
  17 struct export_params {
  18         struct export_param_list *list; /* List of exported parameters. */
  19         struct export_params     *next; /* Link several sets of parameters. */
  20 };
  21
  22 #ifdef __STDC__
  23 #define qp_stringize(var)       #var
  24 #define qp_dotstringize(var)    "." #var
  25 #else
  26 #define qp_stringize(var)       "var"
  27 #define qp_dotstringize(var)    ".var"
  28 #endif
  29 #define QP_VARIABLE(var)        { qp_stringize(var), &(var), sizeof(var) }
  30 #define QP_ARRAY(var)           { "[", 0, sizeof((var)[0]) }
  31 #define QP_VECTOR(var,ptr,len)  { qp_stringize(var), &(ptr), -1 },\
  32                                 { "[", &(len), sizeof(*(ptr)) }
  33 #define QP_FIELD(field, type)   { qp_dotstringize(field), \
  34                                         (void *)offsetof(type, field), \
  35                                         sizeof(((type *)0)->field) }
  36 #define QP_END()                { 0, 0, 0 }
  37
  38 void qp_export _ARGS((struct export_params *_ex_params));
  39 int queryparam _ARGS((int (*_qgetc) _ARGS((void)), void **_paddress,
  40                                                         _mnx_size_t *_psize));
  41 _mnx_size_t paramvalue _ARGS((char **_value, void *_address,
  42                                                         _mnx_size_t _size));
  43 #endif /* _MINIX__QUERYPARAM_H */
  44
  45 /* $PchId: queryparam.h,v 1.1 2005/06/28 14:31:26 philip Exp $ */