713 lines
15 KiB
C
713 lines
15 KiB
C
/* $Id$ */
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/* $NetBSD: ccdconfig.c,v 1.2.2.1 1995/11/11 02:43:35 thorpej Exp $ */
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/*
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* Copyright (c) 1995 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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#include <sys/param.h>
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#include <sys/ioctl.h>
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#include <sys/disklabel.h>
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#include <sys/device.h>
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#include <sys/disk.h>
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#include <sys/stat.h>
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#include <sys/sysctl.h>
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#include <ctype.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 <kvm.h>
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#include <limits.h>
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#include <nlist.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 <sys/ccdvar.h>
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#include "pathnames.h"
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extern char *__progname;
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static int lineno = 0;
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static int verbose = 0;
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static char *ccdconf = _PATH_CCDCONF;
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static char *core = NULL;
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static char *kernel = NULL;
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struct flagval {
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char *fv_flag;
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int fv_val;
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} flagvaltab[] = {
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{ "CCDF_SWAP", CCDF_SWAP },
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{ "CCDF_UNIFORM", CCDF_UNIFORM },
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{ NULL, 0 },
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};
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static struct nlist nl[] = {
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{ "_ccd_softc" },
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#define SYM_CCDSOFTC 0
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{ "_numccd" },
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#define SYM_NUMCCD 1
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{ NULL },
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};
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#define CCD_CONFIG 0 /* configure a device */
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#define CCD_CONFIGALL 1 /* configure all devices */
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#define CCD_UNCONFIG 2 /* unconfigure a device */
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#define CCD_UNCONFIGALL 3 /* unconfigure all devices */
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#define CCD_DUMP 4 /* dump a ccd's configuration */
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static int checkdev __P((char *));
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static int do_io __P((char *, u_long, struct ccd_ioctl *));
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static int do_single __P((int, char **, int));
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static int do_all __P((int));
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static int dump_ccd __P((int, char **));
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static int getmaxpartitions __P((void));
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static int getrawpartition __P((void));
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static int flags_to_val __P((char *));
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static int pathtodevt __P((char *, dev_t *));
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static void print_ccd_info __P((struct ccd_softc *, kvm_t *));
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static char *resolve_ccdname __P((char *));
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static 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, options = 0, action = CCD_CONFIG;
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while ((ch = getopt(argc, argv, "cCf:gM:N:uUv")) != -1) {
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switch (ch) {
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case 'c':
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action = CCD_CONFIG;
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++options;
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break;
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case 'C':
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action = CCD_CONFIGALL;
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++options;
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break;
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case 'f':
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ccdconf = optarg;
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break;
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case 'g':
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action = CCD_DUMP;
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break;
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case 'M':
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core = optarg;
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break;
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case 'N':
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kernel = optarg;
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break;
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case 'u':
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action = CCD_UNCONFIG;
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++options;
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break;
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case 'U':
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action = CCD_UNCONFIGALL;
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++options;
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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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usage();
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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 (options > 1)
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usage();
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switch (action) {
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case CCD_CONFIG:
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case CCD_UNCONFIG:
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exit(do_single(argc, argv, action));
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/* NOTREACHED */
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case CCD_CONFIGALL:
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case CCD_UNCONFIGALL:
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exit(do_all(action));
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/* NOTREACHED */
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case CCD_DUMP:
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exit(dump_ccd(argc, argv));
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/* NOTREACHED */
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}
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/* NOTREACHED */
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}
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static int
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do_single(argc, argv, action)
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int argc;
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char **argv;
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int action;
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{
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struct ccd_ioctl ccio;
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char *ccd, *cp, *cp2, **disks;
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int noflags = 0, i, ileave, flags, j, error;
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bzero(&ccio, sizeof(ccio));
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/*
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* If unconfiguring, all arguments are treated as ccds.
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*/
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if (action == CCD_UNCONFIG || action == CCD_UNCONFIGALL) {
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for (i = 0; argc != 0; ) {
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cp = *argv++; --argc;
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if ((ccd = resolve_ccdname(cp)) == NULL) {
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warnx("invalid ccd name: %s", cp);
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i = 1;
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continue;
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}
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if (do_io(ccd, CCDIOCCLR, &ccio))
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i = 1;
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else
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if (verbose)
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printf("%s unconfigured\n", cp);
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}
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return (i);
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}
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/* Make sure there are enough arguments. */
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if (argc < 4)
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if (argc == 3) {
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/* Assume that no flags are specified. */
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noflags = 1;
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} else {
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if (action == CCD_CONFIGALL) {
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warnx("%s: bad line: %d", ccdconf, lineno);
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return (1);
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} else
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usage();
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}
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/* First argument is the ccd to configure. */
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cp = *argv++; --argc;
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if ((ccd = resolve_ccdname(cp)) == NULL) {
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warnx("invalid ccd name: %s", cp);
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return (1);
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}
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/* Next argument is the interleave factor. */
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cp = *argv++; --argc;
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errno = 0; /* to check for ERANGE */
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ileave = (int)strtol(cp, &cp2, 10);
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if ((errno == ERANGE) || (ileave < 0) || (*cp2 != '\0')) {
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warnx("invalid interleave factor: %s", cp);
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return (1);
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}
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if (noflags == 0) {
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/* Next argument is the ccd configuration flags. */
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cp = *argv++; --argc;
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if ((flags = flags_to_val(cp)) < 0) {
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warnx("invalid flags argument: %s", cp);
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return (1);
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}
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}
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/* Next is the list of disks to make the ccd from. */
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disks = malloc(argc * sizeof(char *));
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if (disks == NULL) {
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warnx("no memory to configure ccd");
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return (1);
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}
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for (i = 0; argc != 0; ) {
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cp = *argv++; --argc;
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if ((j = checkdev(cp)) == 0)
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disks[i++] = cp;
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else {
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warnx("%s: %s", cp, strerror(j));
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return (1);
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}
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}
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/* Fill in the ccio. */
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ccio.ccio_disks = disks;
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ccio.ccio_ndisks = i;
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ccio.ccio_ileave = ileave;
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ccio.ccio_flags = flags;
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if (do_io(ccd, CCDIOCSET, &ccio)) {
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free(disks);
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return (1);
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}
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if (verbose) {
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printf("ccd%d: %d components ", ccio.ccio_unit,
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ccio.ccio_ndisks);
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for (i = 0; i < ccio.ccio_ndisks; ++i) {
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if ((cp2 = strrchr(disks[i], '/')) != NULL)
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++cp2;
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else
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cp2 = disks[i];
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printf("%c%s%c",
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i == 0 ? '(' : ' ', cp2,
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i == ccio.ccio_ndisks - 1 ? ')' : ',');
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}
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printf(", %d blocks ", ccio.ccio_size);
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if (ccio.ccio_ileave != 0)
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printf("interleaved at %d blocks\n", ccio.ccio_ileave);
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else
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printf("concatenated\n");
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}
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free(disks);
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return (0);
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}
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static int
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do_all(action)
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int action;
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{
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FILE *f;
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char line[_POSIX2_LINE_MAX];
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char *cp, **argv;
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int argc, rval;
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if ((f = fopen(ccdconf, "r")) == NULL) {
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warn("fopen: %s", ccdconf);
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return (1);
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}
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while (fgets(line, sizeof(line), f) != NULL) {
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argc = 0;
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argv = NULL;
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++lineno;
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if ((cp = strrchr(line, '\n')) != NULL)
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*cp = '\0';
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/* Break up the line and pass it's contents to do_single(). */
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if (line[0] == '\0')
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goto end_of_line;
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for (cp = line; (cp = strtok(cp, " \t")) != NULL; cp = NULL) {
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if (*cp == '#')
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break;
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if ((argv = realloc(argv,
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sizeof(char *) * ++argc)) == NULL) {
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warnx("no memory to configure ccds");
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return (1);
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}
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argv[argc - 1] = cp;
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/*
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* If our action is to unconfigure all, then pass
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* just the first token to do_single() and ignore
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* the rest. Since this will be encountered on
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* our first pass through the line, the Right
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* Thing will happen.
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*/
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if (action == CCD_UNCONFIGALL) {
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if (do_single(argc, argv, action))
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rval = 1;
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goto end_of_line;
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}
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}
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if (argc != 0)
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if (do_single(argc, argv, action))
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rval = 1;
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end_of_line:
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if (argv != NULL)
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free(argv);
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}
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(void)fclose(f);
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return (rval);
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}
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static int
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checkdev(path)
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char *path;
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{
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struct stat st;
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if (stat(path, &st) != 0)
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return (errno);
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if (!S_ISBLK(st.st_mode) && !S_ISCHR(st.st_mode))
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return (EINVAL);
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return (0);
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}
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static int
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pathtounit(path, unitp)
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char *path;
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int *unitp;
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{
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struct stat st;
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dev_t dev;
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int maxpartitions;
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if (stat(path, &st) != 0)
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return (errno);
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if (!S_ISBLK(st.st_mode) && !S_ISCHR(st.st_mode))
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return (EINVAL);
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if ((maxpartitions = getmaxpartitions()) < 0)
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return (errno);
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*unitp = minor(st.st_rdev) / maxpartitions;
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return (0);
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}
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static char *
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resolve_ccdname(name)
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char *name;
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{
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char c, *cp, *path;
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size_t len, newlen;
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int rawpart;
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if (name[0] == '/' || name[0] == '.') {
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/* Assume they gave the correct pathname. */
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return (strdup(name));
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}
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len = strlen(name);
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c = name[len - 1];
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newlen = len + 8;
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if ((path = malloc(newlen)) == NULL)
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return (NULL);
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bzero(path, newlen);
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if (isdigit(c)) {
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if ((rawpart = getrawpartition()) < 0) {
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free(path);
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return (NULL);
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}
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(void)sprintf(path, "/dev/%s%c", name, 'a' + rawpart);
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} else
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(void)sprintf(path, "/dev/%s", name);
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return (path);
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}
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static int
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do_io(path, cmd, cciop)
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char *path;
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u_long cmd;
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struct ccd_ioctl *cciop;
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{
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int fd;
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char *cp;
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if ((fd = open(path, O_RDWR, 0640)) < 0) {
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warn("open: %s", path);
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return (1);
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}
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if (ioctl(fd, cmd, cciop) < 0) {
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switch (cmd) {
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case CCDIOCSET:
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cp = "CCDIOCSET";
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break;
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case CCDIOCCLR:
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cp = "CCDIOCCLR";
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break;
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default:
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cp = "unknown";
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}
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warn("ioctl (%s): %s", cp, path);
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return (1);
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}
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return (0);
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}
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#define KVM_ABORT(kd, str) { \
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(void)kvm_close((kd)); \
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warnx((str)); \
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warnx(kvm_geterr((kd))); \
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return (1); \
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}
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static int
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dump_ccd(argc, argv)
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int argc;
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char **argv;
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{
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char errbuf[_POSIX2_LINE_MAX], *ccd, *cp;
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struct ccd_softc *cs, *kcs;
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size_t readsize;
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int i, error, numccd, numconfiged = 0;
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kvm_t *kd;
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bzero(errbuf, sizeof(errbuf));
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if ((kd = kvm_openfiles(kernel, core, NULL, O_RDONLY,
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errbuf)) == NULL) {
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warnx("can't open kvm: %s", errbuf);
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return (1);
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}
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if (kvm_nlist(kd, nl))
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KVM_ABORT(kd, "ccd-related symbols not available");
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/* Check to see how many ccds are currently configured. */
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if (kvm_read(kd, nl[SYM_NUMCCD].n_value, (char *)&numccd,
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sizeof(numccd)) != sizeof(numccd))
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KVM_ABORT(kd, "can't determine number of configured ccds");
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if (numccd == 0) {
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printf("ccd driver in kernel, but is uninitialized\n");
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goto done;
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}
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/* Allocate space for the configuration data. */
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readsize = numccd * sizeof(struct ccd_softc);
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if ((cs = malloc(readsize)) == NULL) {
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warnx("no memory for configuration data");
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goto bad;
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}
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bzero(cs, readsize);
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/*
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* Read the ccd configuration data from the kernel and dump
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* it to stdout.
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*/
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if (kvm_read(kd, nl[SYM_CCDSOFTC].n_value, (char *)&kcs,
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sizeof(kcs)) != sizeof(kcs)) {
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free(cs);
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KVM_ABORT(kd, "can't find pointer to configuration data");
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}
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if (kvm_read(kd, (u_long)kcs, (char *)cs, readsize) != readsize) {
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free(cs);
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KVM_ABORT(kd, "can't read configuration data");
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}
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if (argc == 0) {
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for (i = 0; i < numccd; ++i)
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if (cs[i].sc_flags & CCDF_INITED) {
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++numconfiged;
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print_ccd_info(&cs[i], kd);
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}
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if (numconfiged == 0)
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printf("no concatenated disks configured\n");
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} else {
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while (argc) {
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cp = *argv++; --argc;
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if ((ccd = resolve_ccdname(cp)) == NULL) {
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warnx("invalid ccd name: %s", cp);
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continue;
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}
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if ((error = pathtounit(ccd, &i)) != 0) {
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warnx("%s: %s", ccd, strerror(error));
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continue;
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}
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if (i >= numccd) {
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warnx("ccd%d not configured", i);
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continue;
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}
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if (cs[i].sc_flags & CCDF_INITED)
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print_ccd_info(&cs[i], kd);
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else
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printf("ccd%d not configured\n", i);
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}
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}
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free(cs);
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done:
|
||
(void)kvm_close(kd);
|
||
return (0);
|
||
|
||
bad:
|
||
(void)kvm_close(kd);
|
||
return (1);
|
||
}
|
||
|
||
static void
|
||
print_ccd_info(cs, kd)
|
||
struct ccd_softc *cs;
|
||
kvm_t *kd;
|
||
{
|
||
static int header_printed = 0;
|
||
struct ccdcinfo *cip;
|
||
size_t readsize;
|
||
char path[MAXPATHLEN];
|
||
int i;
|
||
|
||
if (header_printed == 0 && verbose) {
|
||
printf("# ccd\t\tileave\tflags\tcompnent devices\n");
|
||
header_printed = 1;
|
||
}
|
||
|
||
readsize = cs->sc_nccdisks * sizeof(struct ccdcinfo);
|
||
if ((cip = malloc(readsize)) == NULL) {
|
||
warn("ccd%d: can't allocate memory for component info",
|
||
cs->sc_unit);
|
||
return;
|
||
}
|
||
bzero(cip, readsize);
|
||
|
||
/* Dump out softc information. */
|
||
printf("ccd%d\t\t%d\t%d\t", cs->sc_unit, cs->sc_ileave,
|
||
cs->sc_cflags & CCDF_USERMASK);
|
||
fflush(stdout);
|
||
|
||
/* Read in the component info. */
|
||
if (kvm_read(kd, (u_long)cs->sc_cinfo, (char *)cip,
|
||
readsize) != readsize) {
|
||
printf("\n");
|
||
warnx("can't read component info");
|
||
warnx(kvm_geterr(kd));
|
||
goto done;
|
||
}
|
||
|
||
/* Read component pathname and display component info. */
|
||
for (i = 0; i < cs->sc_nccdisks; ++i) {
|
||
if (kvm_read(kd, (u_long)cip[i].ci_path, (char *)path,
|
||
cip[i].ci_pathlen) != cip[i].ci_pathlen) {
|
||
printf("\n");
|
||
warnx("can't read component pathname");
|
||
warnx(kvm_geterr(kd));
|
||
goto done;
|
||
}
|
||
printf((i + 1 < cs->sc_nccdisks) ? "%s " : "%s\n", path);
|
||
fflush(stdout);
|
||
}
|
||
|
||
done:
|
||
free(cip);
|
||
}
|
||
|
||
static int
|
||
getmaxpartitions()
|
||
{
|
||
return (MAXPARTITIONS);
|
||
}
|
||
|
||
static int
|
||
getrawpartition()
|
||
{
|
||
return (RAW_PART);
|
||
}
|
||
|
||
static int
|
||
flags_to_val(flags)
|
||
char *flags;
|
||
{
|
||
char *cp, *tok;
|
||
int i, tmp, val = ~CCDF_USERMASK;
|
||
size_t flagslen;
|
||
|
||
/*
|
||
* The most common case is that of NIL flags, so check for
|
||
* those first.
|
||
*/
|
||
if (strcmp("none", flags) == 0 || strcmp("0x0", flags) == 0 ||
|
||
strcmp("0", flags) == 0)
|
||
return (0);
|
||
|
||
flagslen = strlen(flags);
|
||
|
||
/* Check for values represented by strings. */
|
||
if ((cp = strdup(flags)) == NULL)
|
||
err(1, "no memory to parse flags");
|
||
tmp = 0;
|
||
for (tok = cp; (tok = strtok(tok, ",")) != NULL; tok = NULL) {
|
||
for (i = 0; flagvaltab[i].fv_flag != NULL; ++i)
|
||
if (strcmp(tok, flagvaltab[i].fv_flag) == 0)
|
||
break;
|
||
if (flagvaltab[i].fv_flag == NULL) {
|
||
free(cp);
|
||
goto bad_string;
|
||
}
|
||
tmp |= flagvaltab[i].fv_val;
|
||
}
|
||
|
||
/* If we get here, the string was ok. */
|
||
free(cp);
|
||
val = tmp;
|
||
goto out;
|
||
|
||
bad_string:
|
||
|
||
/* Check for values represented in hex. */
|
||
if (flagslen > 2 && flags[0] == '0' && flags[1] == 'x') {
|
||
errno = 0; /* to check for ERANGE */
|
||
val = (int)strtol(&flags[2], &cp, 16);
|
||
if ((errno == ERANGE) || (*cp != '\0'))
|
||
return (-1);
|
||
goto out;
|
||
}
|
||
|
||
/* Check for values represented in decimal. */
|
||
errno = 0; /* to check for ERANGE */
|
||
val = (int)strtol(flags, &cp, 10);
|
||
if ((errno == ERANGE) || (*cp != '\0'))
|
||
return (-1);
|
||
|
||
out:
|
||
return (((val & ~CCDF_USERMASK) == 0) ? val : -1);
|
||
}
|
||
|
||
static void
|
||
usage()
|
||
{
|
||
|
||
fprintf(stderr, "usage: %s [-cv] ccd ileave [flags] %s\n", __progname,
|
||
"dev [...]");
|
||
fprintf(stderr, " %s -C [-v] [-f config_file]\n", __progname);
|
||
fprintf(stderr, " %s -u [-v] ccd [...]\n", __progname);
|
||
fprintf(stderr, " %s -U [-v] [-f config_file]\n", __progname);
|
||
fprintf(stderr, " %s -g [-M core] [-N system] %s\n", __progname,
|
||
"[ccd [...]]");
|
||
exit(1);
|
||
}
|
||
|
||
/* Local Variables: */
|
||
/* c-argdecl-indent: 8 */
|
||
/* c-indent-level: 8 */
|
||
/* End: */
|