50e04779c4
current version of FreeBSD, this isn't guarenteed by the API. Custom security modules, or future implementations of the setuid and setgid may fail. Submitted by: Erik Cederstrand Approved by: cperciva MFC after: 3 days
452 lines
11 KiB
C
452 lines
11 KiB
C
/*
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* Copyright (c) 2003 Poul-Henning Kamp
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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/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/linker.h>
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#include <sys/module.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 <limits.h>
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#include <paths.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 <libgeom.h>
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#define CCDF_UNIFORM 0x02 /* use LCCD of sizes for uniform interleave */
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#define CCDF_MIRROR 0x04 /* use mirroring */
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#define CCDF_NO_OFFSET 0x08 /* do not leave space in front */
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#define CCDF_LINUX 0x10 /* use Linux compatibility mode */
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#include "pathnames.h"
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static int lineno = 0;
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static int verbose = 0;
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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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{ "uniform", CCDF_UNIFORM },
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{ "CCDF_MIRROR", CCDF_MIRROR },
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{ "mirror", CCDF_MIRROR },
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{ "CCDF_NO_OFFSET", CCDF_NO_OFFSET },
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{ "no_offset", CCDF_NO_OFFSET },
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{ "CCDF_LINUX", CCDF_LINUX },
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{ "linux", CCDF_LINUX },
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{ "none", 0 },
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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 do_single(int, char **, int);
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static int do_all(int);
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static int dump_ccd(int, char **);
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static int flags_to_val(char *);
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static int resolve_ccdname(char *);
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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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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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if (modfind("g_ccd") < 0) {
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/* Not present in kernel, try loading it */
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if (kldload("geom_ccd") < 0 || modfind("g_ccd") < 0)
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warn("geom_ccd module not available!");
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}
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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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return (0);
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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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char *cp, *cp2;
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int ccd, noflags = 0, i, ileave, flags = 0;
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struct gctl_req *grq;
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char const *errstr;
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char buf1[BUFSIZ];
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int ex;
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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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ex = 0;
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for (; argc != 0;) {
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cp = *argv++; --argc;
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if ((ccd = resolve_ccdname(cp)) < 0) {
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warnx("invalid ccd name: %s", cp);
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continue;
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}
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grq = gctl_get_handle();
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gctl_ro_param(grq, "verb", -1, "destroy geom");
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gctl_ro_param(grq, "class", -1, "CCD");
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sprintf(buf1, "ccd%d", ccd);
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gctl_ro_param(grq, "geom", -1, buf1);
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errstr = gctl_issue(grq);
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if (errstr == NULL) {
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if (verbose)
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printf("%s unconfigured\n", cp);
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gctl_free(grq);
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continue;
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}
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warnx(
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"%s\nor possibly kernel and ccdconfig out of sync",
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errstr);
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ex = 1;
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}
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return (ex);
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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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}
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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)) < 0) {
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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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grq = gctl_get_handle();
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gctl_ro_param(grq, "verb", -1, "create geom");
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gctl_ro_param(grq, "class", -1, "CCD");
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gctl_ro_param(grq, "unit", sizeof(ccd), &ccd);
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gctl_ro_param(grq, "ileave", sizeof(ileave), &ileave);
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if (flags & CCDF_UNIFORM)
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gctl_ro_param(grq, "uniform", -1, "");
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if (flags & CCDF_MIRROR)
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gctl_ro_param(grq, "mirror", -1, "");
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if (flags & CCDF_NO_OFFSET)
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gctl_ro_param(grq, "no_offset", -1, "");
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if (flags & CCDF_LINUX)
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gctl_ro_param(grq, "linux", -1, "");
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gctl_ro_param(grq, "nprovider", sizeof(argc), &argc);
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for (i = 0; i < argc; i++) {
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sprintf(buf1, "provider%d", i);
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cp = argv[i];
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if (!strncmp(cp, _PATH_DEV, strlen(_PATH_DEV)))
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cp += strlen(_PATH_DEV);
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gctl_ro_param(grq, buf1, -1, cp);
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}
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gctl_rw_param(grq, "output", sizeof(buf1), buf1);
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errstr = gctl_issue(grq);
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if (errstr == NULL) {
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if (verbose) {
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printf("%s", buf1);
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}
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gctl_free(grq);
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return (0);
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}
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warnx(
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"%s\nor possibly kernel and ccdconfig out of sync",
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errstr);
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return (1);
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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[_POSIX2_LINE_MAX];
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char *cp, **argv;
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int argc, rval;
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gid_t egid;
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rval = 0;
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egid = getegid();
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if (setegid(getgid()) != 0)
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err(1, "setegid failed");
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if ((f = fopen(ccdconf, "r")) == NULL) {
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if (setegid(egid) != 0)
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err(1, "setegid failed");
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warn("fopen: %s", ccdconf);
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return (1);
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}
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if (setegid(egid) != 0)
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err(1, "setegid failed");
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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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resolve_ccdname(char *name)
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{
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if (!strncmp(name, _PATH_DEV, strlen(_PATH_DEV)))
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name += strlen(_PATH_DEV);
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if (strncmp(name, "ccd", 3))
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return -1;
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name += 3;
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if (!isdigit(*name))
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return -1;
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return (strtoul(name, NULL, 10));
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}
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static int
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dumpout(int unit)
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{
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static int v;
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struct gctl_req *grq;
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int ncp;
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char *cp;
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char const *errstr;
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grq = gctl_get_handle();
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ncp = 65536;
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cp = malloc(ncp);
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gctl_ro_param(grq, "verb", -1, "list");
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gctl_ro_param(grq, "class", -1, "CCD");
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gctl_ro_param(grq, "unit", sizeof(unit), &unit);
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gctl_rw_param(grq, "output", ncp, cp);
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errstr = gctl_issue(grq);
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if (errstr != NULL)
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errx(1, "%s\nor possibly kernel and ccdconfig out of sync",
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errstr);
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if (strlen(cp) == 0)
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errx(1, "ccd%d not configured", unit);
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if (verbose && !v) {
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printf("# ccd\t\tileave\tflags\tcomponent devices\n");
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v = 1;
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}
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printf("%s", cp);
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free(cp);
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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)
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{
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int i, error;
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if (argc == 0) {
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error = dumpout(-1);
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} else {
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error = 0;
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for (i = 0; error == 0 && i < argc; i++)
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error = dumpout(resolve_ccdname(argv[i]));
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}
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return (error);
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}
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static int
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flags_to_val(char *flags)
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{
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char *cp, *tok;
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int i, tmp, val;
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errno = 0; /* to check for ERANGE */
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val = (int)strtol(flags, &cp, 0);
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if ((errno != ERANGE) && (*cp == '\0')) {
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if (val & ~(CCDF_UNIFORM|CCDF_MIRROR))
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return (-1);
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return (val);
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}
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/* Check for values represented by strings. */
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if ((cp = strdup(flags)) == NULL)
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err(1, "no memory to parse flags");
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tmp = 0;
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for (tok = cp; (tok = strtok(tok, ",")) != NULL; tok = NULL) {
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for (i = 0; flagvaltab[i].fv_flag != NULL; ++i)
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if (strcmp(tok, flagvaltab[i].fv_flag) == 0)
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break;
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if (flagvaltab[i].fv_flag == NULL) {
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free(cp);
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return (-1);
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}
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tmp |= flagvaltab[i].fv_val;
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}
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/* If we get here, the string was ok. */
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free(cp);
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return (tmp);
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}
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static void
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usage(void)
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{
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fprintf(stderr, "%s\n%s\n%s\n%s\n%s\n",
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"usage: ccdconfig [-cv] ccd ileave [flags] dev ...",
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" ccdconfig -C [-v] [-f config_file]",
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" ccdconfig -u [-v] ccd ...",
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" ccdconfig -U [-v] [-f config_file]",
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" ccdconfig -g [ccd ...]");
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exit(1);
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}
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