diff options
Diffstat (limited to 'src/hash.c')
| -rw-r--r-- | src/hash.c | 28 |
1 files changed, 25 insertions, 3 deletions
@@ -1,6 +1,6 @@ /* * 0xFFFF - Open Free Fiasco Firmware Flasher - * Copyright (C) 2007 pancake <pancake@youterm.com> + * Copyright (C) 2007-2009 pancake <pancake@youterm.com> * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -17,6 +17,7 @@ */ #include <stdio.h> +#include <string.h> #include "hash.h" usho do_hash(usho *b, int len) @@ -27,11 +28,13 @@ usho do_hash(usho *b, int len) return result; } -usho do_hash_file(const char *filename) +usho do_hash_file(const char *filename, const char *type) { unsigned char buf[BSIZE]; FILE *fd = fopen(filename, "r"); usho hash = 0; + int align = 0; + int size; int ret; if (fd == NULL) { @@ -39,7 +42,8 @@ usho do_hash_file(const char *filename) return -1; } - do { ret = fread(&buf, 1, BSIZE, fd); + do { + ret = fread(&buf, 1, BSIZE, fd); if (ret == -1) { fclose(fd); return 0; @@ -47,8 +51,26 @@ usho do_hash_file(const char *filename) hash ^= do_hash((usho *)&buf, ret); } while(ret); + size = ftell(fd); fclose(fd); + /* mmc and kernel image must be aligned */ + if (type) { + if (strcmp(type, "mmc") == 0) + align = ((size >> 8) + 1) << 8; + else if (strcmp(type, "kernel") == 0) + align = ((size >> 7) + 1) << 7; + } + + if (align) { + printf("align from %d to %d\n", size, align); + buf[0] = 0xff; + while (size < align) { + hash ^= do_hash((usho *)&buf, 1); + ++size; + } + } + return hash; } |