1 /*- 2 * Copyright (c) 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * Ralph Campbell. 7 * 8 * %sccs.include.redist.c% 9 * 10 * @(#)dec_label.c 8.1 (Berkeley) 06/10/93 11 */ 12 13 #include <stdio.h> 14 #include <unistd.h> 15 #include <sys/param.h> 16 #include <sys/fcntl.h> 17 #include <sys/ioctl.h> 18 #include <sys/disklabel.h> 19 20 #include <pmax/stand/dec_boot.h> 21 22 struct disklabel label; 23 struct Dec_DiskLabel dec_label; 24 25 /* 26 * This program creates or updates the DEC label after 'disklabel' 27 * has initialized the Berkeley disk label. 28 * This program may be useful in sharing ULTRIX disks with 4.4 BSD but it 29 * hasn't been tested much. Use at your own risk. 30 * 31 * Usage: dec_label <disk> 32 */ 33 34 main(argc, argv) 35 int argc; 36 char *argv[]; 37 { 38 register int i; 39 int fd; 40 41 if (argc != 2) { 42 fprintf(stderr, "Usage: dec_label <disk>\n"); 43 exit(1); 44 } 45 if ((fd = open(argv[1], O_RDWR, 0)) < 0) 46 err(1, "%s", argv[1]); 47 if (ioctl(fd, DIOCGDINFO, &label) < 0) 48 err(1, "ioctl DIOCGDINFO"); 49 50 /* fill in DEC label */ 51 dec_label.magic = DEC_LABEL_MAGIC; 52 dec_label.isPartitioned = 1; 53 for (i = 0; i < DEC_NUM_DISK_PARTS; i++) { 54 dec_label.map[i].numBlocks = label.d_partitions[i].p_size; 55 dec_label.map[i].startBlock = label.d_partitions[i].p_offset; 56 printf("%d: start %d size %d\n", i, dec_label.map[i].startBlock, 57 dec_label.map[i].numBlocks); 58 } 59 if (lseek(fd, (off_t)DEC_LABEL_SECTOR * label.d_secsize, SEEK_SET) == -1) 60 err(1, "lseek"); 61 if (write(fd, &dec_label, sizeof(dec_label)) != sizeof(dec_label)) 62 err(1, "write label"); 63 return (0); 64 } 65