641 lines
14 KiB
C
641 lines
14 KiB
C
/* $NetBSD: ccdconfig.c,v 1.56 2014/12/07 10:44:34 mlelstv Exp $ */
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/*-
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* Copyright (c) 1996, 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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*
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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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#include <sys/cdefs.h>
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#ifndef lint
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__COPYRIGHT("@(#) Copyright (c) 1996, 1997\
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The NetBSD Foundation, Inc. All rights reserved.");
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__RCSID("$NetBSD: ccdconfig.c,v 1.56 2014/12/07 10:44:34 mlelstv Exp $");
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#endif
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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/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 <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 <util.h>
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#include <dev/ccdvar.h>
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#include "pathnames.h"
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static size_t lineno;
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static gid_t egid;
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static int verbose;
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static const char *ccdconf = _PATH_CCDCONF;
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static struct flagval {
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const char *fv_flag;
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int fv_val;
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} flagvaltab[] = {
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{ "CCDF_UNIFORM", CCDF_UNIFORM },
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{ "CCDF_NOLABEL", CCDF_NOLABEL },
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{ NULL, 0 },
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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(char *);
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static int do_io(char *, u_long, struct ccd_ioctl *);
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static int do_single(int, char **, int);
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static int do_all(int);
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static int dump_ccd(int, char **, int);
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static int flags_to_val(char *);
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static int pathtounit(char *, int *);
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static char *resolve_ccdname(char *);
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__dead static void usage(void);
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int
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main(int argc, char *argv[])
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{
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int ch, options = 0, action = CCD_CONFIG;
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egid = getegid();
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setegid(getgid());
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while ((ch = getopt(argc, argv, "cCf:guUv")) != -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 '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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default:
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exit(dump_ccd(argc, argv, action));
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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(int argc, char **argv, 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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char buf[MAXPATHLEN];
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int noflags = 0, i, ileave, flags, j;
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unsigned int ndisks, ui;
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int ret = 1;
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flags = 0;
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memset(&ccio, 0, 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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free(ccd);
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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: %lu", ccdconf,
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(u_long)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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}
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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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free(ccd);
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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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free(ccd);
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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 = emalloc(argc * sizeof(char *));
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for (ndisks = 0; argc != 0; ++argv, --argc) {
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if (getfsspecname(buf, sizeof(buf), *argv) == NULL) {
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warn("%s", *argv);
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goto error;
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}
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cp = strdup(buf);
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if (cp == NULL) {
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warn("%s", cp);
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goto error;
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}
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if ((j = checkdev(cp)) == 0)
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disks[ndisks++] = cp;
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else {
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warnx("%s: %s", cp, strerror(j));
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goto error;
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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 = ndisks;
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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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goto error;
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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 (ui = 0; ui < ccio.ccio_ndisks; ++ui) {
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if ((cp2 = strrchr(disks[ui], '/')) != NULL)
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++cp2;
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else
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cp2 = disks[ui];
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printf("%c%s%c",
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ui == 0 ? '(' : ' ', cp2,
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ui == ccio.ccio_ndisks - 1 ? ')' : ',');
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}
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printf(", %ju blocks ", (uintmax_t)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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ret = 0;
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error:
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free(ccd);
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while (ndisks > 0)
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free(disks[--ndisks]);
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free(disks);
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return (ret);
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}
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static int
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do_all(int action)
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{
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FILE *f;
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char *line, *cp, *vp, **argv, **nargv;
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int argc, rval;
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size_t len;
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rval = 0;
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(void)setegid(getgid());
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if ((f = fopen(ccdconf, "r")) == NULL) {
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(void)setegid(egid);
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warn("fopen: %s", ccdconf);
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return (1);
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}
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(void)setegid(egid);
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while ((line = fparseln(f, &len, &lineno, "\\\\#", FPARSELN_UNESCALL))
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!= NULL) {
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argc = 0;
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argv = NULL;
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if (len == 0)
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goto end_of_line;
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for (cp = line; cp != NULL; ) {
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while ((vp = strsep(&cp, "\t ")) != NULL && *vp == '\0')
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;
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if (vp == NULL)
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continue;
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nargv = erealloc(argv, sizeof(char *) * (argc + 1));
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argv = nargv;
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argc++;
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argv[argc - 1] = vp;
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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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free(line);
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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(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(char *path, int *unitp)
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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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*unitp = DISKUNIT(st.st_rdev);
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return (0);
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}
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static char *
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resolve_ccdname(char *name)
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{
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char c, *path;
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size_t len;
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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 estrdup(name);
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}
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len = strlen(name);
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c = name[len - 1];
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if (isdigit((unsigned char)c)) {
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if ((rawpart = getrawpartition()) < 0)
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return NULL;
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easprintf(&path, "/dev/%s%c", name, 'a' + rawpart);
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} else
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easprintf(&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(char *path, u_long cmd, struct ccd_ioctl *cciop)
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{
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int fd;
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const 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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(void)close(fd);
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return (1);
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}
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(void)close(fd);
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return (0);
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}
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static void
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print_ccd_info(int u, struct ccddiskinfo *ccd, char *str)
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{
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static int header_printed = 0;
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if (header_printed == 0 && verbose) {
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printf("# ccd\t\tileave\tflags\t\tsize\tcomponent devices\n");
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header_printed = 1;
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}
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/* Dump out softc information. */
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printf("ccd%d\t\t%d\t0x%x\t%ju\t", u, ccd->ccd_ileave,
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ccd->ccd_flags & CCDF_USERMASK,
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(uintmax_t)ccd->ccd_size * DEV_BSIZE);
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/* Read component pathname and display component info. */
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for (size_t i = 0; i < ccd->ccd_ndisks; ++i) {
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fputs(str, stdout);
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fputc((i + 1 < ccd->ccd_ndisks) ? ' ' : '\n', stdout);
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str += strlen(str) + 1;
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}
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fflush(stdout);
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}
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static int
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printccdinfo(int u)
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{
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struct ccddiskinfo ccd;
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size_t s = sizeof(ccd);
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size_t len;
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const char *str;
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if (sysctlbyname(str = "kern.ccd.info", &ccd, &s, &u, sizeof(u))
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== -1) {
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if (errno == ENOENT)
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warnx("ccd unit %d not configured", u);
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else
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warn("error getting %s for ccd%d", str, u);
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return 1;
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}
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if (sysctlbyname(str = "kern.ccd.components", NULL, &len, &u, sizeof(u))
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== -1) {
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warn("Error getting %s for ccd%d", str, u);
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return 1;
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}
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char *names;
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names = emalloc(len);
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if (sysctlbyname(str = "kern.ccd.components", names, &len, &u,
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sizeof(u)) == -1) {
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warn("error getting %s for ccd%d", str, u);
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free(names);
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return 1;
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}
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print_ccd_info(u, &ccd, names);
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free(names);
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return 0;
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}
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static int
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dump_ccd(int argc, char **argv, int action)
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{
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const char *sys;
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int errs = 0;
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if (argc == 0) {
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int *units;
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size_t nunits = 0;
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if (sysctlbyname(sys = "kern.ccd.units", NULL, &nunits, NULL, 0)
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== -1) {
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switch (errno) {
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case ENOENT:
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warnx("no ccd driver in the kernel");
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return 1;
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case ENOMEM:
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break;
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default:
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err(EXIT_FAILURE, "1 error getting %s", sys);
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}
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}
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if (nunits == 0) {
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warnx("no concatenated disks configured");
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return 1;
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}
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units = emalloc(nunits);
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if (sysctlbyname(sys, units, &nunits, NULL, 0) == -1)
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err(EXIT_FAILURE, "2 error getting %s", sys);
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nunits /= sizeof(*units);
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for (size_t i = 0; i < nunits; i++)
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errs += printccdinfo(units[i]);
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free(units);
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return errs;
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}
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/* Dump ccd configuration to stdout. */
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while (argc) {
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int i = 0; /* XXX: vax gcc */
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int error;
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char *cp = *argv++; --argc;
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char *ccd;
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if ((ccd = resolve_ccdname(cp)) == NULL) {
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warnx("invalid ccd name: %s", cp);
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errs++;
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continue;
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}
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if ((error = pathtounit(ccd, &i)) != 0) {
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warn("%s", ccd);
|
|
free(ccd);
|
|
errs++;
|
|
continue;
|
|
}
|
|
errs += printccdinfo(i);
|
|
}
|
|
return errs;
|
|
}
|
|
|
|
|
|
static int
|
|
flags_to_val(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. */
|
|
cp = estrdup(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(void)
|
|
{
|
|
const char *progname = getprogname();
|
|
|
|
fprintf(stderr, "usage: %s [-cv] ccd ileave [flags] dev [...]\n",
|
|
progname);
|
|
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 [ccd [...]]\n",
|
|
progname);
|
|
exit(1);
|
|
}
|