83d771de78
hinge on the "verb" parameter which the class gets to interpret as it sees fit. Move the entire request into the kernel and move changed parameters back when done.
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, 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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}
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fclose(fp);
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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);
|
|
}
|