851e916f1b
by which files (hmm...why can't I unmount that file system over there). Currently this is just the device and inode number of the file backing the vnd, but hopefully consing up full pathnames can be done at some point.
337 lines
8.8 KiB
C
337 lines
8.8 KiB
C
/* $NetBSD: vnconfig.c,v 1.25 2002/06/21 19:09:29 atatat Exp $ */
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/*-
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* Copyright (c) 1997 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Jason R. Thorpe.
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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 by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Copyright (c) 1993 University of Utah.
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* Copyright (c) 1990, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* the Systems Programming Group of the University of Utah Computer
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* Science Department.
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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 by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, 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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* from: Utah $Hdr: vnconfig.c 1.1 93/12/15$
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*
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* @(#)vnconfig.c 8.1 (Berkeley) 12/15/93
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*/
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#include <sys/param.h>
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#include <sys/ioctl.h>
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#include <sys/mount.h>
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#include <sys/buf.h>
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#include <sys/disklabel.h>
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#include <sys/disk.h>
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#include <dev/vndvar.h>
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#include <disktab.h>
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#include <err.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <util.h>
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#define VND_CONFIG 1
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#define VND_UNCONFIG 2
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#define VND_GET 3
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int verbose = 0;
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char *tabname;
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int config __P((char *, char *, char *, int));
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int getgeom __P((struct vndgeom *, char *));
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int main __P((int, char **));
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char *rawdevice __P((char *));
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void usage __P((void));
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int
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main(argc, argv)
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int argc;
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char *argv[];
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{
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int ch, rv, action = VND_CONFIG;
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while ((ch = getopt(argc, argv, "cf:lt:uv")) != -1) {
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switch (ch) {
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case 'c':
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action = VND_CONFIG;
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break;
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case 'f':
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if (setdisktab(optarg) == -1)
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usage();
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break;
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case 'l':
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action = VND_GET;
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break;
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case 't':
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tabname = optarg;
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break;
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case 'u':
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action = VND_UNCONFIG;
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break;
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case 'v':
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verbose = 1;
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break;
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default:
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case '?':
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usage();
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/* NOTREACHED */
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}
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}
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argc -= optind;
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argv += optind;
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if (action == VND_CONFIG) {
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if ((argc < 2 || argc > 3) ||
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(argc == 3 && tabname != NULL))
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usage();
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rv = config(argv[0], argv[1], (argc == 3) ? argv[2] : NULL,
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action);
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} else if (action == VND_UNCONFIG) {
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if (argc != 1 || tabname != NULL)
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usage();
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rv = config(argv[0], NULL, NULL, action);
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} else {
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char *vn, path[64];
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struct vnd_user vnu;
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int v, n;
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if (argc != 0 && argc != 1)
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usage();
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vn = argc ? argv[0] : "vnd0";
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v = opendisk(vn, O_RDWR, path, sizeof(path), 0);
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if (v == -1)
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err(1, "open: %s", vn);
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for (n = 0; ; n++) {
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vnu.vnu_unit = argc ? -1 : n;
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rv = ioctl(v, VNDIOCGET, &vnu);
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if (rv == -1) {
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if (errno == ENXIO)
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break;
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err(1, "VNDIOCGET");
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}
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if (vnu.vnu_ino == 0)
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printf("vnd%d: not in use\n",
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vnu.vnu_unit);
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else
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printf("vnd%d: dev %d,%d inode %d\n",
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vnu.vnu_unit,
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major(vnu.vnu_dev), minor(vnu.vnu_dev),
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vnu.vnu_ino);
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if (argc)
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break;
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}
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close(v);
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}
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exit(rv);
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}
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int
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config(dev, file, geom, action)
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char *dev, *file, *geom;
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int action;
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{
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struct vnd_ioctl vndio;
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struct disklabel *lp;
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char rdev[MAXPATHLEN + 1];
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int fd, rv;
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fd = opendisk(dev, O_RDWR, rdev, sizeof(rdev), 0);
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if (fd < 0) {
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warn("%s: opendisk", rdev);
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return (1);
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}
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memset(&vndio, 0, sizeof(vndio));
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#ifdef __GNUC__
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rv = 0; /* XXX */
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#endif
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vndio.vnd_file = file;
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if (geom != NULL) {
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rv = getgeom(&vndio.vnd_geom, geom);
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if (rv != 0)
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errx(1, "invalid geometry: %s", geom);
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vndio.vnd_flags = VNDIOF_HASGEOM;
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} else if (tabname != NULL) {
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lp = getdiskbyname(tabname);
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if (lp == NULL)
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errx(1, "unknown disk type: %s", tabname);
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vndio.vnd_geom.vng_secsize = lp->d_secsize;
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vndio.vnd_geom.vng_nsectors = lp->d_nsectors;
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vndio.vnd_geom.vng_ntracks = lp->d_ntracks;
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vndio.vnd_geom.vng_ncylinders = lp->d_ncylinders;
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vndio.vnd_flags = VNDIOF_HASGEOM;
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}
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/*
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* Clear (un-configure) the device
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*/
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if (action == VND_UNCONFIG) {
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rv = ioctl(fd, VNDIOCCLR, &vndio);
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if (rv)
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warn("%s: VNDIOCCLR", rdev);
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else if (verbose)
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printf("%s: cleared\n", rdev);
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}
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/*
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* Configure the device
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*/
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if (action == VND_CONFIG) {
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int ffd;
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ffd = open(file, O_RDWR);
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if (ffd < 0)
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warn("%s", file);
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else {
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(void) close(ffd);
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rv = ioctl(fd, VNDIOCSET, &vndio);
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if (rv)
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warn("%s: VNDIOCSET", rdev);
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else if (verbose) {
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printf("%s: %d bytes on %s", rdev,
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vndio.vnd_size, file);
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if (vndio.vnd_flags & VNDIOF_HASGEOM)
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printf(" using geometry %d/%d/%d/%d",
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vndio.vnd_geom.vng_secsize,
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vndio.vnd_geom.vng_nsectors,
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vndio.vnd_geom.vng_ntracks,
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vndio.vnd_geom.vng_ncylinders);
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printf("\n");
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}
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}
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}
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(void) close(fd);
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fflush(stdout);
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return (rv < 0);
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}
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int
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getgeom(vng, cp)
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struct vndgeom *vng;
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char *cp;
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{
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char *secsize, *nsectors, *ntracks, *ncylinders;
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#define GETARG(arg) \
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do { \
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if (cp == NULL || *cp == '\0') \
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return (1); \
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arg = strsep(&cp, "/"); \
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if (arg == NULL) \
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return (1); \
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} while (0)
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GETARG(secsize);
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GETARG(nsectors);
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GETARG(ntracks);
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GETARG(ncylinders);
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#undef GETARG
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/* Too many? */
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if (cp != NULL)
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return (1);
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#define CVTARG(str, num) \
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do { \
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num = strtol(str, &cp, 10); \
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if (*cp != '\0') \
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return (1); \
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} while (0)
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CVTARG(secsize, vng->vng_secsize);
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CVTARG(nsectors, vng->vng_nsectors);
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CVTARG(ntracks, vng->vng_ntracks);
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CVTARG(ncylinders, vng->vng_ncylinders);
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#undef CVTARG
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return (0);
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}
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void
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usage()
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{
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(void)fprintf(stderr, "%s%s",
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"usage: vnconfig [-c] [-f disktab] [-t typename] [-v] special-file"
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" regular-file [geomspec]\n",
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" vnconfig -u [-v] special-file\n"
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" vnconfig -l [special-file]\n");
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exit(1);
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}
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