1 /* ----------------------------------------------------------------------- * 2 * 3 * Copyright 2010 Gene Cumm 4 * 5 * This program is free software; you can redistribute it and/or modify 6 * it under the terms of the GNU General Public License as published by 7 * the Free Software Foundation, Inc., 53 Temple Place Ste 330, 8 * Boston MA 02111-1307, USA; either version 2 of the License, or 9 * (at your option) any later version; incorporated herein by reference. 10 * 11 * ----------------------------------------------------------------------- */ 12 13 /* 14 * mk-lba-img.c 15 * 16 * Makes an image that contains the LBA in every *word of every sector 17 */ 18 19 #include <stdio.h> 20 #include <stdlib.h> 21 #include <errno.h> 22 #include <string.h> 23 #include <unistd.h> 24 25 #define NUM_SECT (256*63+1) 26 #define BPS (512) 27 #define SECT_INT (BPS / sizeof(unsigned int)) 28 29 typedef unsigned char uint8_t; 30 typedef unsigned int uint32_t; 31 32 const char DEF_FN[] = "-"; 33 34 int main(int argc, char *argv[]) 35 { 36 int i, rv = 0, one = 0; 37 unsigned int lba, b[SECT_INT]; 38 int len; 39 FILE *f; 40 uint8_t tt = 0; 41 const char *fn; 42 43 if (argc >= 2) { 44 if (argc >= 3) { 45 if (strcasecmp("-1", argv[1]) == 0) { 46 fn = argv[2]; 47 one = 1; 48 } else { 49 fn = argv[1]; 50 } 51 } else { 52 fn = argv[1]; 53 } 54 } else { 55 fn = DEF_FN; 56 } 57 58 if (!strcmp(fn, "-")) 59 f = stdout; 60 else 61 f = fopen(fn, "w"); 62 63 if (!f) { 64 fprintf(stderr, "%s: %s: unable to open for writing: %s\n", 65 argv[0], fn, strerror(errno)); 66 return 1; 67 } 68 69 lba = 0; 70 while ((len = fread(b, 1, BPS, stdin))) { 71 if (len < BPS) 72 memset((char *)b + len, 0, BPS - len); 73 fwrite(b, 1, BPS, f); 74 lba++; 75 } 76 77 memset(b, 0, sizeof b); 78 79 while (lba < NUM_SECT) { 80 if (one) { 81 b[0] = lba; 82 } else { 83 for (i = 0; i < SECT_INT; i++) 84 b[i] = lba; 85 } 86 fwrite(b, 1, BPS, f); 87 lba++; 88 } 89 90 if (f != stdout) 91 fclose(f); 92 93 return rv; 94 } 95
