sbin/init.chmr/cf_defs.h

/*-
 * Copyright (c) 1993 The Regents of the University of California.
 * All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Christoph Robitschko.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *      This product includes software developed by the University of
 *      California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

/*
 * cf_defs.h
 * typedefs and defines for the configuration subsystem.
 */

struct Command  {
                char    *name;          /* command name / value description   */
                short   level;          /* level of command nesting           */
                u_char  type;           /* type of entry (exact, string, int) */
                u_char  flags;          /* additional flags                   */
                void    *var;           /* Pointer to variable to assign to   */
                union   {
                        int     intval; /* Integer value to assign to *var    */
                        char    *chval; /* String ...                         */
                        } val;
                };


/* defines for the level field */
#define SUB     0x100           /* There must be another argument */
#define OPT     0x200           /* There can be another argument (not yet impl) */
#define LEVEL   0x0ff           /* Flags masked off */

/* Valid types */
#define T_EX    0x00            /* Must match exact */
#define T_STR   0x01            /* Matches any string */
#define T_INT   0x02            /* Matches an integer */
#define T_BYTE  0x03            /* Matches a byte expression (1m = 1024k == 1024 == 1048576b) */
#define T_TIME  0x04            /* Matches a time expression (1:00:00 == 1h == 60m == 3600s == 3600) */

/* values for the flags field */
#define NRAISE  0x01            /* Variable can be lowered but not raised */
#define MAXVAL  0x02            /* intval contains the maximum allowed value */
#define CFUNC   0x04            /* Call the function *(void (*)())var(argc, argv) */


#define NOVAR           NULL, {0}