/*      $NetBSD: dklist.c,v 1.11 2014/06/13 16:00:55 joerg Exp $        */

/*-
* Copyright (c) 2001 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Andrew Doran.
*
* 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
*/

/*
* Copyright (c) 1996 John M. Vinopal
* 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.
* 3. All advertising materials mentioning features or use of this software
*    must display the following acknowledgement:
*      This product includes software developed for the NetBSD Project
*      by John M. Vinopal.
* 4. The name of the author may not be used to endorse or promote products
*    derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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 lint
#include <sys/cdefs.h>
__RCSID("$NetBSD: dklist.c,v 1.11 2014/06/13 16:00:55 joerg Exp $");
#endif /* not lint */

#include <sys/types.h>
#include <sys/iostat.h>
#include <sys/ioctl.h>
#include <sys/sysctl.h>

#include <dev/ic/mlxreg.h>
#include <dev/ic/mlxio.h>

#include <ctype.h>
#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <util.h>

#include "extern.h"

static SIMPLEQ_HEAD(, mlx_disk) mlx_disks;

void
mlx_disk_init(void)
{

       SIMPLEQ_INIT(&mlx_disks);
}

int
mlx_disk_empty(void)
{

       return (SIMPLEQ_EMPTY(&mlx_disks));
}

void
mlx_disk_iterate(void (*func)(struct mlx_disk *))
{
       struct mlx_disk *md;

       SIMPLEQ_FOREACH(md, &mlx_disks, chain)
               (*func)(md);
}

static int
mlx_disk_add0(const char *name)
{
       struct mlx_disk *md;
       int unit;

       if (name[0] != 'l' || name[1] != 'd' || !isdigit((unsigned char)name[2]))
               return (-1);

       SIMPLEQ_FOREACH(md, &mlx_disks, chain)
               if (strcmp(md->name, name) == 0)
                       return (0);

       unit = atoi(name + 2);
       if (ioctl(mlxfd, MLX_GET_SYSDRIVE, &unit) < 0)
               return (-1);

       if ((md = malloc(sizeof(*md))) == NULL)
               err(EXIT_FAILURE, "mlx_disk_add()");

       strlcpy(md->name, name, sizeof(md->name));
       md->hwunit = unit;
       SIMPLEQ_INSERT_TAIL(&mlx_disks, md, chain);
       return (0);
}

void
mlx_disk_add(const char *name)
{

       if (mlx_disk_add0(name) != 0)
               errx(EXIT_FAILURE, "%s is not attached to %s", name, mlxname);
}

void
mlx_disk_add_all(void)
{
       struct io_sysctl *data;
       size_t i, len;
       static const int mib[3] = { CTL_HW, HW_IOSTATS, sizeof(*data) };

       data = asysctl(mib, __arraycount(mib), &len);
       len /= sizeof(*data);

       if (data == NULL || len == 0)
               errx(EXIT_FAILURE, "no drives attached.");

       for (i = 0; i < len; ++i) {
               if (data[i].type == IOSTAT_DISK)
                       mlx_disk_add0(data[i].name);
       }

       free(data);
}