/*-
 * SPDX-License-Identifier: BSD-2-Clause
 *
 * Copyright (c) 2004 Pawel Jakub Dawidek <pjd@FreeBSD.org>
 * All rights reserved.
 *
 * 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.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS 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 AUTHORS 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.
 */

#ifndef _GEOM_H_
#define _GEOM_H_
#define G_LIB_VERSION   5

/*
 * The G_FLAG_VERBOSE flag on a command specification means that the
 * command will accept a -v option and the GEOM framework will print
 * out status information after the command when it is run with -v.
 * Additionally a GEOM command can explicitly specify a -v option and
 * handle it as it would any other option. If both a -v option and
 * G_FLAG_VERBOSE are specified for a command then both types of verbose
 * information will be output when that command is run with -v.
 *
 * When the G_FLAG_LOADKLD is specified for a command, the GEOM kernel
 * module will be loaded when that command is run if it has not yet been
 * loaded. This flag is typically specified for the `create' command.
 */
#define G_FLAG_NONE     0x0000
#define G_FLAG_VERBOSE  0x0001
#define G_FLAG_LOADKLD  0x0002

#define G_TYPE_NONE     0x00
#define G_TYPE_BOOL     0x01
#define G_TYPE_STRING   0x02
#define G_TYPE_NUMBER   0x03
#define G_TYPE_MASK     0x0f
#define G_TYPE_DONE     0x10
#define G_TYPE_MULTI    0x20
#define G_TYPE_NUMMASK  0xff00
#define G_TYPE_NUMSHIFT 8

#define G_OPT_MAX       16
#define G_OPT_DONE(opt)         do { (opt)->go_type |= G_TYPE_DONE; } while (0)
#define G_OPT_ISDONE(opt)       ((opt)->go_type & G_TYPE_DONE)
#define G_OPT_ISMULTI(opt)      ((opt)->go_type & G_TYPE_MULTI)
#define G_OPT_TYPE(opt)         ((opt)->go_type & G_TYPE_MASK)
#define G_OPT_NUM(opt)          (((opt)->go_type & G_TYPE_NUMMASK) >> G_TYPE_NUMSHIFT)
#define G_OPT_NUMINC(opt)       ((opt)->go_type += (1 << G_TYPE_NUMSHIFT))

#define G_VAL_OPTIONAL  ((void *)-1)

#define G_OPT_SENTINEL  { '\0', NULL, NULL, G_TYPE_NONE }
#define G_NULL_OPTS     { G_OPT_SENTINEL }
#define G_CMD_SENTINEL  { NULL, 0, NULL, G_NULL_OPTS, NULL }

struct g_option {
        char             go_char;
        const char      *go_name;
        const void      *go_val;
        unsigned         go_type;
};

struct g_command {
        const char      *gc_name;
        unsigned         gc_flags;
        void            (*gc_func)(struct gctl_req *, unsigned);
        struct g_option gc_options[G_OPT_MAX];
        const char      *gc_usage;
};
#endif  /* !_GEOM_H_ */