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14ecc3c0f0
Without this cast the compiler cannot know that it has to convert the null pointer constant NULL to a null pointer.
606 lines
16 KiB
C
606 lines
16 KiB
C
/*-
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* Copyright (c) 2003 Jake Burkholder.
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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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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* Copyright (c) 1994, 1995 Gordon W. Ross
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* Copyright (c) 1994 Theo de Raadt
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* All rights reserved.
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* Copyright (c) 1987, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Symmetric Computer Systems.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* This product includes software developed by Theo de Raadt.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* from: $NetBSD: disksubr.c,v 1.13 2000/12/17 22:39:18 pk $
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/types.h>
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#include <sys/param.h>
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#include <sys/disk.h>
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#include <sys/ioctl.h>
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#include <sys/sun_disklabel.h>
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#include <sys/wait.h>
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#include <err.h>
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#include <fcntl.h>
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#include <inttypes.h>
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#include <libgeom.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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#define _PATH_TMPFILE "/tmp/EdDk.XXXXXXXXXX"
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#define _PATH_BOOT "/boot/boot1"
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static int bflag;
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static int Bflag;
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static int eflag;
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static int nflag;
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static int Rflag;
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static int wflag;
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static int check_label(struct sun_disklabel *sl);
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static void read_label(struct sun_disklabel *sl, const char *disk);
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static void write_label(struct sun_disklabel *sl, const char *disk,
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const char *bootpath);
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static int edit_label(struct sun_disklabel *sl, const char *disk,
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const char *bootpath);
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static int parse_label(struct sun_disklabel *sl, const char *file);
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static void print_label(struct sun_disklabel *sl, const char *disk, FILE *out);
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static int parse_size(struct sun_disklabel *sl, int part, char *size);
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static int parse_offset(struct sun_disklabel *sl, int part, char *offset);
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static void usage(void);
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extern char *__progname;
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/*
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* Disk label editor for sun disklabels.
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*/
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int
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main(int ac, char **av)
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{
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struct sun_disklabel sl;
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const char *bootpath;
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const char *proto;
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const char *disk;
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int ch;
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bootpath = _PATH_BOOT;
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while ((ch = getopt(ac, av, "b:BenrRw")) != -1)
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switch (ch) {
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case 'b':
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bflag = 1;
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bootpath = optarg;
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break;
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case 'B':
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Bflag = 1;
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break;
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case 'e':
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eflag = 1;
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break;
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case 'n':
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nflag = 1;
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break;
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case 'r':
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fprintf(stderr, "Obsolete -r flag ignored\n");
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break;
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case 'R':
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Rflag = 1;
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break;
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case 'w':
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wflag = 1;
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break;
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default:
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usage();
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break;
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}
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if (bflag && !Bflag)
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usage();
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if (nflag && !(Bflag || eflag || Rflag || wflag))
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usage();
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if (eflag && (Rflag || wflag))
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usage();
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ac -= optind;
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av += optind;
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if (ac == 0)
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usage();
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bzero(&sl, sizeof(sl));
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disk = av[0];
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if (wflag) {
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if (ac != 2 || strcmp(av[1], "auto") != 0)
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usage();
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read_label(&sl, disk);
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bzero(sl.sl_part, sizeof(sl.sl_part));
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sl.sl_part[SUN_RAWPART].sdkp_cyloffset = 0;
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sl.sl_part[SUN_RAWPART].sdkp_nsectors = sl.sl_ncylinders *
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sl.sl_ntracks * sl.sl_nsectors;
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write_label(&sl, disk, bootpath);
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} else if (eflag) {
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if (ac != 1)
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usage();
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read_label(&sl, disk);
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if (sl.sl_magic != SUN_DKMAGIC)
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errx(1, "%s%s has no sun disklabel", _PATH_DEV, disk);
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while (edit_label(&sl, disk, bootpath) != 0)
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;
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} else if (Rflag) {
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if (ac != 2)
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usage();
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proto = av[1];
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read_label(&sl, disk);
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if (parse_label(&sl, proto) != 0)
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errx(1, "%s: invalid label", proto);
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write_label(&sl, disk, bootpath);
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} else if (Bflag) {
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read_label(&sl, disk);
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if (sl.sl_magic != SUN_DKMAGIC)
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errx(1, "%s%s has no sun disklabel", _PATH_DEV, disk);
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write_label(&sl, disk, bootpath);
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} else {
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read_label(&sl, disk);
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if (sl.sl_magic != SUN_DKMAGIC)
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errx(1, "%s%s has no sun disklabel", _PATH_DEV, disk);
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print_label(&sl, disk, stdout);
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}
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return (0);
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}
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static int
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check_label(struct sun_disklabel *sl)
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{
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uint64_t nsectors;
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uint64_t ostart;
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uint64_t start;
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uint64_t oend;
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uint64_t end;
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int i;
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int j;
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nsectors = sl->sl_ncylinders * sl->sl_ntracks * sl->sl_nsectors;
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if (sl->sl_part[SUN_RAWPART].sdkp_cyloffset != 0 ||
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sl->sl_part[SUN_RAWPART].sdkp_nsectors != nsectors) {
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warnx("partition c is incorrect, must start at 0 and cover "
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"whole disk");
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return (1);
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}
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for (i = 0; i < SUN_NPART; i++) {
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if (i == 2 || sl->sl_part[i].sdkp_nsectors == 0)
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continue;
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start = (uint64_t)sl->sl_part[i].sdkp_cyloffset *
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sl->sl_ntracks * sl->sl_nsectors;
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end = start + sl->sl_part[i].sdkp_nsectors;
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if (end > nsectors) {
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warnx("partition %c extends past end of disk",
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'a' + i);
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return (1);
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}
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for (j = 0; j < SUN_NPART; j++) {
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if (j == 2 || j == i ||
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sl->sl_part[j].sdkp_nsectors == 0)
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continue;
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ostart = (uint64_t)sl->sl_part[j].sdkp_cyloffset *
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sl->sl_ntracks * sl->sl_nsectors;
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oend = ostart + sl->sl_part[j].sdkp_nsectors;
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if ((start <= ostart && end >= oend) ||
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(start > ostart && start < oend) ||
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(end > ostart && end < oend)) {
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warnx("partition %c overlaps partition %c",
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'a' + i, 'a' + j);
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return (1);
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}
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}
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}
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return (0);
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}
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static void
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read_label(struct sun_disklabel *sl, const char *disk)
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{
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char path[MAXPATHLEN];
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uint32_t sectorsize;
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uint32_t fwsectors;
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uint32_t fwheads;
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off_t mediasize;
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char buf[SUN_SIZE];
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int fd, error;
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snprintf(path, sizeof(path), "%s%s", _PATH_DEV, disk);
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if ((fd = open(path, O_RDONLY)) < 0)
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err(1, "open %s", path);
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if (read(fd, buf, sizeof(buf)) != sizeof(buf))
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err(1, "read");
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error = sunlabel_dec(buf, sl);
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if (error) {
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bzero(sl, sizeof(*sl));
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if (ioctl(fd, DIOCGMEDIASIZE, &mediasize) != 0)
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err(1, "%s: ioctl(DIOCGMEDIASIZE) failed", disk);
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if (ioctl(fd, DIOCGSECTORSIZE, §orsize) != 0)
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err(1, "%s: DIOCGSECTORSIZE failed", disk);
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if (ioctl(fd, DIOCGFWSECTORS, &fwsectors) != 0)
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fwsectors = 63;
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if (ioctl(fd, DIOCGFWHEADS, &fwheads) != 0) {
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if (mediasize <= 63 * 1024 * sectorsize)
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fwheads = 1;
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else if (mediasize <= 63 * 16 * 1024 * sectorsize)
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fwheads = 16;
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else
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fwheads = 255;
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}
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sl->sl_rpm = 3600;
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sl->sl_pcylinders = mediasize / (fwsectors * fwheads *
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sectorsize);
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sl->sl_sparespercyl = 0;
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sl->sl_interleave = 1;
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sl->sl_ncylinders = sl->sl_pcylinders - 2;
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sl->sl_acylinders = 2;
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sl->sl_nsectors = fwsectors;
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sl->sl_ntracks = fwheads;
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sl->sl_part[SUN_RAWPART].sdkp_cyloffset = 0;
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sl->sl_part[SUN_RAWPART].sdkp_nsectors = sl->sl_ncylinders *
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sl->sl_ntracks * sl->sl_nsectors;
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if (mediasize > (off_t)4999L * 1024L * 1024L) {
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sprintf(sl->sl_text,
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"FreeBSD%jdG cyl %u alt %u hd %u sec %u",
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(intmax_t)(mediasize + 512 * 1024 * 1024) /
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(1024 * 1024 * 1024),
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sl->sl_ncylinders, sl->sl_acylinders,
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sl->sl_ntracks, sl->sl_nsectors);
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} else {
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sprintf(sl->sl_text,
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"FreeBSD%jdM cyl %u alt %u hd %u sec %u",
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(intmax_t)(mediasize + 512 * 1024) / (1024 * 1024),
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sl->sl_ncylinders, sl->sl_acylinders,
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sl->sl_ntracks, sl->sl_nsectors);
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}
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}
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close(fd);
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}
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static void
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write_label(struct sun_disklabel *sl, const char *disk, const char *bootpath)
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{
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char path[MAXPATHLEN];
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char boot[SUN_BOOTSIZE];
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char buf[SUN_SIZE];
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const char *errstr;
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off_t off;
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int bfd;
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int fd;
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int i;
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struct gctl_req *grq;
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sl->sl_magic = SUN_DKMAGIC;
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if (check_label(sl) != 0)
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errx(1, "invalid label");
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bzero(buf, sizeof(buf));
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sunlabel_enc(buf, sl);
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if (nflag) {
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print_label(sl, disk, stdout);
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return;
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}
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if (Bflag) {
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if ((bfd = open(bootpath, O_RDONLY)) < 0)
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err(1, "open %s", bootpath);
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i = read(bfd, boot, sizeof(boot));
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if (i < 0)
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err(1, "read");
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else if (i != sizeof (boot))
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errx(1, "read wrong size boot code (%d)", i);
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close(bfd);
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}
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snprintf(path, sizeof(path), "%s%s", _PATH_DEV, disk);
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fd = open(path, O_RDWR);
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if (fd < 0) {
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grq = gctl_get_handle();
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gctl_ro_param(grq, "verb", -1, "write label");
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gctl_ro_param(grq, "class", -1, "SUN");
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gctl_ro_param(grq, "geom", -1, disk);
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gctl_ro_param(grq, "label", sizeof buf, buf);
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errstr = gctl_issue(grq);
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if (errstr != NULL)
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errx(1, "%s", errstr);
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gctl_free(grq);
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if (Bflag) {
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grq = gctl_get_handle();
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gctl_ro_param(grq, "verb", -1, "write bootcode");
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gctl_ro_param(grq, "class", -1, "SUN");
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gctl_ro_param(grq, "geom", -1, disk);
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gctl_ro_param(grq, "bootcode", sizeof boot, boot);
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errstr = gctl_issue(grq);
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if (errstr != NULL)
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errx(1, "%s", errstr);
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gctl_free(grq);
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}
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} else {
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if (lseek(fd, 0, SEEK_SET) < 0)
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err(1, "lseek");
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if (write(fd, buf, sizeof(buf)) != sizeof(buf))
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err (1, "write");
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if (Bflag) {
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for (i = 0; i < SUN_NPART; i++) {
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if (sl->sl_part[i].sdkp_nsectors == 0)
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continue;
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off = sl->sl_part[i].sdkp_cyloffset *
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sl->sl_ntracks * sl->sl_nsectors * 512;
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/*
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* Ignore first SUN_SIZE bytes of boot code to
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* avoid overwriting the label.
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*/
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if (lseek(fd, off + SUN_SIZE, SEEK_SET) < 0)
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err(1, "lseek");
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if (write(fd, boot + SUN_SIZE,
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sizeof(boot) - SUN_SIZE) !=
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sizeof(boot) - SUN_SIZE)
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err(1, "write");
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}
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}
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close(fd);
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}
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exit(0);
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}
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static int
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edit_label(struct sun_disklabel *sl, const char *disk, const char *bootpath)
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{
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char tmpfil[] = _PATH_TMPFILE;
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const char *editor;
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int status;
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FILE *fp;
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pid_t pid;
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pid_t r;
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int fd;
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int c;
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if ((fd = mkstemp(tmpfil)) < 0)
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err(1, "mkstemp");
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if ((fp = fdopen(fd, "w")) == NULL)
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err(1, "fdopen");
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print_label(sl, disk, fp);
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fflush(fp);
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if ((pid = fork()) < 0)
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err(1, "fork");
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if (pid == 0) {
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if ((editor = getenv("EDITOR")) == NULL)
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editor = _PATH_VI;
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execlp(editor, editor, tmpfil, (char *)NULL);
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err(1, "execlp %s", editor);
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}
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status = 0;
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while ((r = wait(&status)) > 0 && r != pid)
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;
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if (WIFEXITED(status)) {
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if (parse_label(sl, tmpfil) == 0) {
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fclose(fp);
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unlink(tmpfil);
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write_label(sl, disk, bootpath);
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return (0);
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}
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printf("re-edit the label? [y]: ");
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fflush(stdout);
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c = getchar();
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if (c != EOF && c != '\n')
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while (getchar() != '\n')
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;
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if (c == 'n') {
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fclose(fp);
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unlink(tmpfil);
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return (0);
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}
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}
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fclose(fp);
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unlink(tmpfil);
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return (1);
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}
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static int
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parse_label(struct sun_disklabel *sl, const char *file)
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{
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char offset[32];
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char size[32];
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char buf[128];
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uint8_t part;
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FILE *fp;
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int line;
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line = 0;
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if ((fp = fopen(file, "r")) == NULL)
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err(1, "fopen");
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bzero(sl->sl_part, sizeof(sl->sl_part));
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while (fgets(buf, sizeof(buf), fp) != NULL) {
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if (buf[0] != ' ' || buf[1] != ' ')
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continue;
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if (sscanf(buf, " %c: %s %s\n", &part, size, offset) != 3 ||
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parse_size(sl, part - 'a', size) ||
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parse_offset(sl, part - 'a', offset)) {
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warnx("%s: syntex error on line %d",
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file, line);
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fclose(fp);
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return (1);
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}
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line++;
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|
}
|
|
fclose(fp);
|
|
return (check_label(sl));
|
|
}
|
|
|
|
static int
|
|
parse_size(struct sun_disklabel *sl, int part, char *size)
|
|
{
|
|
uintmax_t nsectors;
|
|
uintmax_t total;
|
|
uintmax_t n;
|
|
char *p;
|
|
int i;
|
|
|
|
nsectors = 0;
|
|
n = strtoumax(size, &p, 10);
|
|
if (*p != '\0') {
|
|
if (strcmp(size, "*") == 0) {
|
|
total = sl->sl_ncylinders * sl->sl_ntracks *
|
|
sl->sl_nsectors;
|
|
for (i = 0; i < part; i++) {
|
|
if (i == 2)
|
|
continue;
|
|
nsectors += sl->sl_part[i].sdkp_nsectors;
|
|
}
|
|
n = total - nsectors;
|
|
} else if (p[1] == '\0' && (p[0] == 'K' || p[0] == 'k')) {
|
|
n = roundup((n * 1024) / 512,
|
|
sl->sl_ntracks * sl->sl_nsectors);
|
|
} else if (p[1] == '\0' && (p[0] == 'M' || p[0] == 'm')) {
|
|
n = roundup((n * 1024 * 1024) / 512,
|
|
sl->sl_ntracks * sl->sl_nsectors);
|
|
} else if (p[1] == '\0' && (p[0] == 'G' || p[0] == 'g')) {
|
|
n = roundup((n * 1024 * 1024 * 1024) / 512,
|
|
sl->sl_ntracks * sl->sl_nsectors);
|
|
} else
|
|
return (-1);
|
|
}
|
|
sl->sl_part[part].sdkp_nsectors = n;
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
parse_offset(struct sun_disklabel *sl, int part, char *offset)
|
|
{
|
|
uintmax_t nsectors;
|
|
uintmax_t n;
|
|
char *p;
|
|
int i;
|
|
|
|
nsectors = 0;
|
|
n = strtoumax(offset, &p, 10);
|
|
if (*p != '\0') {
|
|
if (strcmp(offset, "*") == 0) {
|
|
for (i = 0; i < part; i++) {
|
|
if (i == 2)
|
|
continue;
|
|
nsectors += sl->sl_part[i].sdkp_nsectors;
|
|
}
|
|
n = nsectors / (sl->sl_nsectors * sl->sl_ntracks);
|
|
} else
|
|
return (-1);
|
|
}
|
|
sl->sl_part[part].sdkp_cyloffset = n;
|
|
return (0);
|
|
}
|
|
|
|
static void
|
|
print_label(struct sun_disklabel *sl, const char *disk, FILE *out)
|
|
{
|
|
int i;
|
|
|
|
fprintf(out,
|
|
"# /dev/%s:\n"
|
|
"text: %s\n"
|
|
"bytes/sectors: 512\n"
|
|
"sectors/cylinder: %d\n"
|
|
"sectors/unit: %d\n"
|
|
"\n"
|
|
"%d partitions:\n"
|
|
"#\n"
|
|
"# Size is in sectors, use %%dK, %%dM or %%dG to specify in kilobytes,\n"
|
|
"# megabytes or gigabytes respectively, or '*' to specify rest of disk.\n"
|
|
"# Offset is in cylinders, use '*' to calculate offsets automatically.\n"
|
|
"#\n"
|
|
"# size offset\n"
|
|
"# ---------- ----------\n",
|
|
disk,
|
|
sl->sl_text,
|
|
sl->sl_nsectors * sl->sl_ntracks,
|
|
sl->sl_nsectors * sl->sl_ntracks * sl->sl_ncylinders,
|
|
SUN_NPART);
|
|
for (i = 0; i < SUN_NPART; i++) {
|
|
if (sl->sl_part[i].sdkp_nsectors == 0)
|
|
continue;
|
|
fprintf(out, " %c: %10u %10u\n",
|
|
'a' + i,
|
|
sl->sl_part[i].sdkp_nsectors,
|
|
sl->sl_part[i].sdkp_cyloffset);
|
|
}
|
|
}
|
|
|
|
static void
|
|
usage(void)
|
|
{
|
|
|
|
fprintf(stderr, "usage:"
|
|
"\t%s [-r] disk\n"
|
|
"\t\t(to read label)\n"
|
|
"\t%s -B [-b boot1] [-n] disk\n"
|
|
"\t\t(to install boot program only)\n"
|
|
"\t%s -R [-B [-b boot1]] [-r] [-n] disk protofile\n"
|
|
"\t\t(to restore label)\n"
|
|
"\t%s -e [-B [-b boot1]] [-r] [-n] disk\n"
|
|
"\t\t(to edit label)\n"
|
|
"\t%s -w [-B [-b boot1]] [-r] [-n] disk type\n"
|
|
"\t\t(to write default label)\n",
|
|
__progname,
|
|
__progname,
|
|
__progname,
|
|
__progname,
|
|
__progname);
|
|
exit(1);
|
|
}
|