include/minix/optset.h

   1 #ifndef _MINIX_OPTSET_H
   2 #define _MINIX_OPTSET_H
   3
   4 typedef enum {
   5   OPT_BOOL,
   6   OPT_STRING,
   7   OPT_INT
   8 } optset_type;
   9
  10 /* An entry for the parser of an options set. The 'os_name' field must point
  11  * to a string, which is treated case-insensitively; the last entry of a table
  12  * must have NULL name. The 'os_type' field must be set to one of the OPT_
  13  * values defined above. The 'os_ptr' field must point to the field that is to
  14  * receive the value of a recognized option. For OPT_STRING, it must point to a
  15  * string of a size set in 'os_val'; the resulting string may be truncated, but
  16  * will always be null-terminated. For OPT_BOOL, it must point to an int which
  17  * will be set to the value in 'os_val' if the option is present. For OPT_INT,
  18  * it must point to an int which will be set to the provided option value;
  19  * 'os_val' is then a base passed to strtol().
  20  */
  21 struct optset {
  22   char *os_name;
  23   optset_type os_type;
  24   void *os_ptr;
  25   int os_val;
  26 };
  27
  28 void optset_parse(struct optset *table, char *string);
  29
  30 #endif /* _MINIX_OPTSET_H */