/*      $NetBSD: geom.c,v 1.4 2021/01/31 22:45:46 rillig Exp $  */

/*
* Copyright (c) 1995, 1997 Jason R. Thorpe.
* 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 Jason R. Thorpe.
* 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.
*/

/* Modified by Philip A. Nelson for use in sysinst. */

#include <sys/param.h>
#include <sys/ioctl.h>
#include <fcntl.h>
#include <unistd.h>
#include <util.h>
#include <stdint.h>
#include <errno.h>
#include "partutil.h"

#include "defs.h"

bool
disk_ioctl(const char *disk, unsigned long cmd, void *d)
{
       char diskpath[MAXPATHLEN];
       int fd;
       int sv_errno;

       /* Open the disk. */
       fd = opendisk(disk, O_RDONLY, diskpath, sizeof(diskpath), 0);
       if (fd == -1)
               return false;

       if (ioctl(fd, cmd, d) == -1) {
               sv_errno = errno;
               (void)close(fd);
               errno = sv_errno;
               return false;
       }
       (void)close(fd);
       return true;
}

bool
get_wedge_list(const char *disk, struct dkwedge_list *dkwl)
{
       struct dkwedge_info *dkw;
       memset(dkwl, 0, sizeof(*dkwl));

       for (;;) {
               if (!disk_ioctl(disk, DIOCLWEDGES, dkwl))
                       goto out;
               if (dkwl->dkwl_nwedges == dkwl->dkwl_ncopied)
                       return true;
               dkwl->dkwl_bufsize = dkwl->dkwl_nwedges * sizeof(*dkw);
               dkw = realloc(dkwl->dkwl_buf, dkwl->dkwl_bufsize);
               if (dkw == NULL)
                       goto out;
               dkwl->dkwl_buf = dkw;
       }
out:
       free(dkwl->dkwl_buf);
       return false;
}

bool
get_wedge_info(const char *disk, struct dkwedge_info *dkw)
{

       return disk_ioctl(disk, DIOCGWEDGEINFO, dkw);
}

bool
get_disk_geom(const char *disk, struct disk_geom *d)
{
       char buf[MAXPATHLEN];
       int fd, error;

       if ((fd = opendisk(disk, O_RDONLY, buf, sizeof(buf), 0)) == -1)
               return false;

       error = getdiskinfo(disk, fd, NULL, d, NULL);
       close(fd);
       if (error < 0) {
               errno = error;
               return false;
       }
       return true;
}

bool
get_label_geom(const char *disk, struct disklabel *l)
{

       return disk_ioctl(disk, DIOCGDINFO, l);
}