123 lines
3.3 KiB
C
123 lines
3.3 KiB
C
/* $NetBSD: geom.c,v 1.4 2021/01/31 22:45:46 rillig Exp $ */
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/*
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* Copyright (c) 1995, 1997 Jason R. Thorpe.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed for the NetBSD Project
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* by Jason R. Thorpe.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/* Modified by Philip A. Nelson for use in sysinst. */
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#include <sys/param.h>
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#include <sys/ioctl.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <util.h>
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#include <stdint.h>
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#include <errno.h>
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#include "partutil.h"
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#include "defs.h"
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bool
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disk_ioctl(const char *disk, unsigned long cmd, void *d)
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{
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char diskpath[MAXPATHLEN];
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int fd;
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int sv_errno;
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/* Open the disk. */
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fd = opendisk(disk, O_RDONLY, diskpath, sizeof(diskpath), 0);
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if (fd == -1)
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return false;
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if (ioctl(fd, cmd, d) == -1) {
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sv_errno = errno;
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(void)close(fd);
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errno = sv_errno;
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return false;
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}
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(void)close(fd);
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return true;
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}
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bool
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get_wedge_list(const char *disk, struct dkwedge_list *dkwl)
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{
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struct dkwedge_info *dkw;
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memset(dkwl, 0, sizeof(*dkwl));
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for (;;) {
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if (!disk_ioctl(disk, DIOCLWEDGES, dkwl))
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goto out;
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if (dkwl->dkwl_nwedges == dkwl->dkwl_ncopied)
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return true;
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dkwl->dkwl_bufsize = dkwl->dkwl_nwedges * sizeof(*dkw);
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dkw = realloc(dkwl->dkwl_buf, dkwl->dkwl_bufsize);
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if (dkw == NULL)
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goto out;
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dkwl->dkwl_buf = dkw;
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}
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out:
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free(dkwl->dkwl_buf);
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return false;
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}
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bool
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get_wedge_info(const char *disk, struct dkwedge_info *dkw)
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{
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return disk_ioctl(disk, DIOCGWEDGEINFO, dkw);
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}
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bool
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get_disk_geom(const char *disk, struct disk_geom *d)
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{
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char buf[MAXPATHLEN];
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int fd, error;
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if ((fd = opendisk(disk, O_RDONLY, buf, sizeof(buf), 0)) == -1)
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return false;
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error = getdiskinfo(disk, fd, NULL, d, NULL);
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close(fd);
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if (error < 0) {
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errno = error;
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return false;
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}
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return true;
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}
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bool
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get_label_geom(const char *disk, struct disklabel *l)
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{
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return disk_ioctl(disk, DIOCGDINFO, l);
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}
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