645 lines
16 KiB
C
645 lines
16 KiB
C
/* $NetBSD: bim.c,v 1.12 2001/11/22 23:24:44 simonb Exp $ */
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/*
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* Copyright (c) 1994 Philip A. Nelson.
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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 by Philip A. Nelson.
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* 4. The name of Philip A. Nelson may not be used to endorse or promote
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* products derived from this software without specific prior written
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* permission.
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*
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* THIS SOFTWARE IS PROVIDED BY PHILIP NELSON ``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 PHILIP NELSON BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#ifndef lint
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__RCSID("$NetBSD: bim.c,v 1.12 2001/11/22 23:24:44 simonb Exp $");
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#endif /* not lint */
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/*
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* Boot Image Manager
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*
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* (First copy called "hdsetup" and was written under Minix.)
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*
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* Phil Nelson
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* Sept 30, 1990
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*/
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#include <sys/types.h>
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#include <sys/param.h>
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#include <unistd.h>
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#include <a.out.h>
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#include <err.h>
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#include <fcntl.h>
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#include <ctype.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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#define FSTYPENAMES
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#include <sys/disklabel.h>
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#include "images.h"
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#include "extern.h"
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int copy_bytes __P((int, int, int, int, int));
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unsigned short dkcksum __P((struct disklabel *));
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void getlf __P((char));
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void getstr __P((char *, int));
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void init_images __P((char));
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int main __P((int, char *[]));
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void save_images __P((void));
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void usage __P((void));
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#define TRUE 1
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#define FALSE 0
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#define MAXARGCMDS 20
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#define BLOCK_SIZE 1024
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#define DEFAULT_DEVICE "/dev/sd0c"
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/* Global data.... */
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char disk_info[BLOCK_SIZE];
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int disk_fd; /* The file descriptor for the disk. */
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int yesmode;
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struct disklabel *dk_label = (struct disklabel *) & disk_info[LABELOFFSET];
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struct imageinfo *im_table =
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(struct imageinfo *) (&disk_info[LABELOFFSET] + sizeof(struct disklabel));
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int label_changed = FALSE;
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int images_changed = FALSE;
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int secsize;
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/* Utility routines... */
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/***********************/
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void
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usage()
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{
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printf("usage: %s [-y] [-c command [-c command ...]] [device]\n",
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getprogname());
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printf(" Maximum of %d commands\n", MAXARGCMDS);
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exit(1);
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}
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void
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getlf(inchar)
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char inchar;
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{
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while (inchar != '\n')
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inchar = getchar();
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}
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void
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getstr(str, size)
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char *str;
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int size;
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{
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char inchar;
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int count;
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count = 0;
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inchar = getchar();
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while (count < size - 1 && inchar != '\n') {
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*str++ = inchar;
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count++;
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inchar = getchar();
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}
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*str++ = 0;
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getlf(inchar);
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}
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/* Checksum a disk label */
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unsigned short
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dkcksum(lp)
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struct disklabel *lp;
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{
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unsigned short *start, *end, sum = 0;
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start = (unsigned short *) lp;
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end = (unsigned short *) &lp->d_partitions[lp->d_npartitions];
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while (start < end)
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sum ^= *start++;
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return sum;
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}
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void
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save_images()
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{
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int count;
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count = (int) lseek(disk_fd, (off_t) 0, SEEK_SET);
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if (count != 0)
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err(1, "lseek error in saving image info");
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count = write(disk_fd, disk_info, BLOCK_SIZE);
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if (count != BLOCK_SIZE)
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err(1, "write error in saving image info");
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sync();
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}
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/* This function will initialize the image information . */
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void
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init_images(badmagic)
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char badmagic;
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{
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char answer[80];
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int index;
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if (badmagic) {
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printf("Image information has improper magic number.\n");
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while (TRUE) {
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if (yesmode == 1)
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break;
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prompt(answer, 3,
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"Do you want the images initialized? (y or n) ");
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if (answer[0] == 'y')
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break;
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if (answer[0] == 'n')
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errx(1, "images not initialized.");
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}
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}
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/* Initialize the image table. */
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im_table->ii_magic = IMAGE_MAGIC;
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im_table->ii_boot_partition = -1;
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for (index = 0; index < dk_label->d_npartitions; index++)
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if (dk_label->d_partitions[index].p_fstype == FS_BOOT) {
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im_table->ii_boot_partition = index;
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break;
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}
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im_table->ii_boot_count = MAXIMAGES;
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im_table->ii_boot_used = 0;
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im_table->ii_boot_default = -1;
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images_changed = TRUE;
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}
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/* Print out the header and other information about the disk. */
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int
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display_part(num, args, syntax)
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int num;
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char **args;
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char *syntax;
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{
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int count;
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printf("\nDisk: %s Type: %s\n", dk_label->d_packname,
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dk_label->d_typename);
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printf("Physical Sector Size = %d\n", dk_label->d_secsize);
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printf("Disk Size = %ld\n", (long)dk_label->d_secperunit);
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/* Disk Partitions. */
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printf(" partition type sector start length in sectors\n");
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for (count = 0; count < dk_label->d_npartitions; count++) {
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if (dk_label->d_partitions[count].p_fstype != FS_UNUSED) {
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printf(" %5c ", 'a' + count);
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printf("%14s",
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fstypenames[dk_label->d_partitions[count].p_fstype]);
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printf("%14ld %17ld\n",
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(long)dk_label->d_partitions[count].p_offset,
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(long)dk_label->d_partitions[count].p_size);
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}
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}
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printf("\n");
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return FALSE;
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}
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int
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display_image(num, args, syntax)
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int num;
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char **args;
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char *syntax;
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{
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int count;
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/* Boot Images. */
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if (im_table->ii_boot_partition != -1)
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printf("Boot partition = %c\n",
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'a' + im_table->ii_boot_partition);
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if (im_table->ii_boot_default != -1)
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printf("Default boot image = %d\n", im_table->ii_boot_default);
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printf("Boot Images: total of %d\n", im_table->ii_boot_count);
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printf(" (image address and size in sectors.)\n");
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printf("Image address size load addr run addr name\n");
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for (count = 0; count < im_table->ii_boot_used; count++) {
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printf("%5d %8ld %6ld %#9lx %#9lx %s\n", count,
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im_table->ii_images[count].boot_address / secsize,
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im_table->ii_images[count].boot_size / secsize,
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im_table->ii_images[count].boot_load_adr,
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im_table->ii_images[count].boot_run_adr,
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im_table->ii_images[count].boot_name);
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}
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printf("\n");
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return FALSE;
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}
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int
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display_head(num, args, syntax)
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int num;
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char **args;
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char *syntax;
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{
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printf("\nDisk: %s Type: %s\n", dk_label->d_packname,
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dk_label->d_typename);
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printf("Physical Sector Size = %d\n", dk_label->d_secsize);
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printf("Disk Size = %ld\n", (long)dk_label->d_secperunit);
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return FALSE;
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}
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/*
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* Utility routine for moving boot images. These are byte addresses
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* relative to the start of the files.
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*/
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int
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copy_bytes(from_fd, from_adr, to_fd, to_adr, number)
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int from_fd, from_adr, to_fd, to_adr, number;
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{
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int count;
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int index;
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char buffer[BLOCK_SIZE];
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/* Check the parameters. */
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if (to_adr > from_adr && from_fd == to_fd) {
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printf("There is a system error. (copy_bytes)\n");
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return 0;
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}
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/* Do the copy. */
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for (index = 0; index < number; index += BLOCK_SIZE) {
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count = lseek(from_fd, (off_t) (from_adr + index), SEEK_SET);
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if (count != from_adr + index) {
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printf("Error in copying (seek from)\n");
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return 0;
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}
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count = read(from_fd, buffer, BLOCK_SIZE);
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if (count != BLOCK_SIZE) {
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if (index != number - 1 || count < 0) {
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printf("Error in copying (read from)\n");
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return 0;
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} else {
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while (count < BLOCK_SIZE)
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buffer[count++] = 0;
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}
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}
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count = lseek(to_fd, (off_t) (to_adr + index), SEEK_SET);
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if (count != to_adr + index) {
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printf("Error in copying (seek to)\n");
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return 0;
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}
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count = write(to_fd, buffer, BLOCK_SIZE);
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if (count != BLOCK_SIZE) {
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printf("Error in copying (write to)\n");
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return 0;
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}
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}
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/* Success. */
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return 1;
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}
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/* Add a boot image. */
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int
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add_image(num, args, syntax)
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int num;
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char **args;
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char *syntax;
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{
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struct exec im_exec; /* Information about a new image. */
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int im_file;
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int im_size; /* Size of text and data in bytes. Rounded up
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* to a full block in both text and data. */
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int which_image; /* Which image is to be operated upon. */
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int count; /* read/write counts. */
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int index; /* temporary variable for loops. */
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int part_size; /* The total size of the boot partition (in
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* bytes). */
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int total_size; /* The total size of all images (in bytes). */
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int boot_start; /* Byte address of start of boot partition. */
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int new_size; /* The new total size of all images. */
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int im_addr; /* Byte address of the new boot image. */
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unsigned int im_load_adr; /* The memory load address. */
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unsigned int im_run_adr;/* The memory run address. */
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char *nptr; /* Pointer for making name lower case. */
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/* Check argument numbers. */
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if (num != 2 && num != 3) {
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printf("Syntax: %s\n", syntax);
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return FALSE;
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}
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/* Check for a boot partition. */
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if (im_table->ii_boot_partition == -1) {
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printf("There is no boot partition.\n");
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return FALSE;
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}
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/* Any free images? */
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which_image = im_table->ii_boot_used;
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if (which_image == im_table->ii_boot_count) {
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printf("No more boot image slots available.\n");
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return FALSE;
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}
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/* Open the file. */
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im_file = open(args[1], O_RDONLY);
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if (im_file < 0) {
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printf("Could not open %s\n", args[1]);
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return FALSE;
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}
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/* check the exec header. */
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count = read(im_file, (char *) &im_exec, sizeof(struct exec));
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if (count != sizeof(struct exec)) {
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printf("Read problems for file %s\n", args[1]);
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close(im_file);
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return FALSE;
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}
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if (N_GETMAGIC(im_exec) != ZMAGIC || N_GETMID(im_exec) != MID_MACHINE) {
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printf("%s is not a a pc532 executable file.\n", args[1]);
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close(im_file);
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return FALSE;
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}
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if (im_exec.a_entry < 0x2000) {
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printf("%s has a load address less than 0x2000.\n", args[1]);
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close(im_file);
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return FALSE;
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}
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im_load_adr = im_exec.a_entry - sizeof(im_exec); /* & ~(__LDPGSZ-1); */
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im_run_adr = im_exec.a_entry;
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if (im_load_adr > 0xFFFFFF) {
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im_load_adr = im_load_adr & 0xFFFFFF;
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im_run_adr = im_run_adr & 0xFFFFFF;
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printf("%s has a load address greater than 0xFFFFFF.\n",
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args[1]);
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printf("using the address:\n\tload address = 0x%x\n"
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"\trun address = 0x%x\n", im_load_adr, im_run_adr);
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}
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/* Check the sizes. */
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boot_start =
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dk_label->d_partitions[im_table->ii_boot_partition].p_offset
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* secsize;
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part_size = dk_label->d_partitions[im_table->ii_boot_partition].p_size
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* secsize;
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total_size = 0;
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for (index = 0; index < im_table->ii_boot_used; index++)
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total_size = total_size + im_table->ii_images[index].boot_size;
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/* Calculate other things. */
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im_size = im_exec.a_text + im_exec.a_data;
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/* Final check. */
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new_size = total_size + im_size;
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if (new_size > part_size) {
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printf("Image too big to fit in boot partition.\n");
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close(im_file);
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}
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/* Add the image. */
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im_addr = (total_size + secsize - 1) / secsize * secsize;
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im_table->ii_images[which_image].boot_address = im_addr;
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im_table->ii_images[which_image].boot_size = im_size;
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im_table->ii_images[which_image].boot_load_adr = im_load_adr;
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im_table->ii_images[which_image].boot_run_adr = im_run_adr;
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if (num == 3)
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strncpy(im_table->ii_images[which_image].boot_name, args[2],
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15);
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else
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strncpy(im_table->ii_images[which_image].boot_name, args[1],
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15);
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if (copy_bytes(im_file, 0, disk_fd, boot_start + im_addr, im_size)) {
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im_table->ii_boot_used++;
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/* Make name lowercase and report on image. */
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for (nptr = im_table->ii_images[which_image].boot_name;
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*nptr != 0;
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nptr++)
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if (isupper(*nptr))
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*nptr = tolower(*nptr);
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printf("added image %d (%s).\n", which_image,
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im_table->ii_images[which_image].boot_name);
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close(im_file);
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} else {
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printf("Problems in installing image.\n");
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close(im_file);
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return FALSE;
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}
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/* Save the changes. */
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save_images();
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return FALSE;
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}
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/* Delete a boot image. */
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int
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delete_image(num, args, syntax)
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int num;
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char **args;
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char *syntax;
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{
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int which_image; /* Which image is to be operated upon. */
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int index; /* temporary variable for loops. */
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int boot_start; /* Zone number of start of boot partition. */
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int del_size; /* Size of the deleted image. */
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/* Check arguments. */
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if (num != 2) {
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printf("Syntax: %s\n", syntax);
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return FALSE;
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}
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/* Find the image. */
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which_image = -1;
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for (index = which_image; index < im_table->ii_boot_used; index++)
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if (strcmp(im_table->ii_images[index].boot_name,
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args[1]) == 0) {
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which_image = index;
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break;
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}
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if (which_image == -1)
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if (!Str2Int(args[1], &which_image)) {
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printf("Syntax: %s\n", syntax);
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return FALSE;
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}
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if (which_image < 0 || which_image >= im_table->ii_boot_used) {
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printf("Delete: No such image (%s)\n", args[1]);
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return FALSE;
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}
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/* Report on image we are deleteing. */
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printf("deleting image %d (%s).\n", which_image,
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im_table->ii_images[which_image].boot_name);
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/* Do the delete. */
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boot_start =
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dk_label->d_partitions[im_table->ii_boot_partition].p_offset
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* dk_label->d_secsize;
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del_size = im_table->ii_images[which_image].boot_size;
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for (index = which_image; index < im_table->ii_boot_used - 1; index++) {
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copy_bytes(
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disk_fd,
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boot_start + im_table->ii_images[index + 1].boot_address,
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disk_fd,
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boot_start + im_table->ii_images[index + 1].boot_address
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- del_size,
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im_table->ii_images[index + 1].boot_size);
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im_table->ii_images[index] = im_table->ii_images[index + 1];
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im_table->ii_images[index].boot_address -= del_size;
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}
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im_table->ii_boot_used--;
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if (which_image == im_table->ii_boot_default)
|
|
im_table->ii_boot_default = -1;
|
|
else
|
|
if (which_image < im_table->ii_boot_default)
|
|
im_table->ii_boot_default--;
|
|
|
|
/* Save the changes. */
|
|
save_images();
|
|
return FALSE;
|
|
}
|
|
|
|
/* Set the default boot image. */
|
|
int
|
|
set_default_image(num, args, syntax)
|
|
int num;
|
|
char **args;
|
|
char *syntax;
|
|
{
|
|
int which_image;
|
|
|
|
if (num != 2 || !Str2Int(args[1], &which_image)) {
|
|
printf("Syntax: %s\n", syntax);
|
|
return FALSE;
|
|
}
|
|
if (which_image >= im_table->ii_boot_used) {
|
|
printf("No such image.\n");
|
|
return FALSE;
|
|
}
|
|
im_table->ii_boot_default = which_image;
|
|
images_changed = TRUE;
|
|
return FALSE;
|
|
}
|
|
|
|
/* Initialize the disk or just the image portion. */
|
|
int
|
|
initialize(num, args, syntax)
|
|
int num;
|
|
char **args;
|
|
char *syntax;
|
|
{
|
|
|
|
/* Check the args */
|
|
if (num > 1) {
|
|
printf("Syntax: %s\n", syntax);
|
|
return FALSE;
|
|
}
|
|
init_images(FALSE);
|
|
return FALSE;
|
|
}
|
|
|
|
/* Write the disk header and exit. */
|
|
int
|
|
write_exit(num, args, syntax)
|
|
int num;
|
|
char **args;
|
|
char *syntax;
|
|
{
|
|
|
|
if (images_changed)
|
|
save_images();
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/* The main program! */
|
|
/*********************/
|
|
|
|
int
|
|
main(argc, argv)
|
|
int argc;
|
|
char *argv[];
|
|
{
|
|
int count; /* Used by reads. */
|
|
char *fname;
|
|
int cmdscnt; /* Number of argument line commands. */
|
|
char *argcmds[MAXARGCMDS];
|
|
char optchar;
|
|
int index;
|
|
|
|
/* Check the parameters. */
|
|
yesmode = 0;
|
|
cmdscnt = 0;
|
|
opterr = TRUE;
|
|
fname = DEFAULT_DEVICE;
|
|
while ((optchar = getopt(argc, argv, "c:")) != -1)
|
|
switch (optchar) {
|
|
case 'y':
|
|
yesmode = 1;
|
|
break;
|
|
case 'c':
|
|
if (cmdscnt == MAXARGCMDS)
|
|
usage();
|
|
argcmds[cmdscnt++] = optarg;
|
|
break;
|
|
case '?':
|
|
usage();
|
|
}
|
|
|
|
if (argc - optind > 1)
|
|
usage();
|
|
if (optind < argc)
|
|
fname = argv[optind];
|
|
|
|
disk_fd = open(fname, O_RDWR);
|
|
if (disk_fd < 0)
|
|
err(1, "Could not open %s", fname);
|
|
|
|
/* Read the disk information block. */
|
|
count = read(disk_fd, disk_info, BLOCK_SIZE);
|
|
if (count != BLOCK_SIZE)
|
|
err(1, "Could not read info block on %s", fname);
|
|
|
|
/* Check for correct information and set up pointers. */
|
|
if (dk_label->d_magic != DISKMAGIC)
|
|
errx(1, "Could not find a disk label on %s", fname);
|
|
if (im_table->ii_magic != IMAGE_MAGIC)
|
|
init_images(TRUE);
|
|
if (dkcksum(dk_label) != 0)
|
|
printf("Warning: bad checksum in disk label.\n");
|
|
|
|
/* initialize secsize. */
|
|
secsize = dk_label->d_secsize;
|
|
|
|
/* do the commands.... */
|
|
if (cmdscnt > 0) {
|
|
/* Process the argv commands. */
|
|
for (index = 0; index < cmdscnt; index++)
|
|
one_command(argcmds[index]);
|
|
} else {
|
|
/* Interactive command loop. */
|
|
display_part(0, NULL, NULL);
|
|
display_image(0, NULL, NULL);
|
|
command_loop();
|
|
}
|
|
exit(0);
|
|
}
|