static int do_digest(char *algorithm, int argc, char *argv[])
{
struct digest *d;
int ret = 0;
int i;
unsigned char *hash;
d = digest_get_by_name(algorithm);
BUG_ON(!d);
if (argc < 2)
return COMMAND_ERROR_USAGE;
hash = calloc(d->length, sizeof(unsigned char));
if (!hash) {
perror("calloc");
return COMMAND_ERROR_USAGE;
}
argv++;
while (*argv) {
char *filename = "/dev/mem";
ulong start = 0, size = ~0;
/* arguments are either file, file+area or area */
if (parse_area_spec(*argv, &start, &size)) {
filename = *argv;
if (argv[1] && !parse_area_spec(argv[1], &start, &size))
argv++;
}
if (digest_file_window(d, filename, hash, start, size) < 0)
ret = 1;
for (i = 0; i < d->length; i++)
printf("%02x", hash[i]);
printf(" %s\t0x%08lx ... 0x%08lx\n", filename, start, start + size);
argv++;
}
free(hash);
return ret;
}
static int do_crc(int argc, char *argv[])
{
loff_t start = 0, size = ~0;
ulong crc = 0, vcrc = 0, total = 0;
char *filename = "/dev/mem";
#ifdef CONFIG_CMD_CRC_CMP
char *vfilename = NULL;
#endif
int opt, err = 0, filegiven = 0, verify = 0;
while((opt = getopt(argc, argv, "f:F:v:V:")) > 0) {
switch(opt) {
case 'f':
filename = optarg;
filegiven = 1;
break;
#ifdef CONFIG_CMD_CRC_CMP
case 'F':
verify = 1;
vfilename = optarg;
break;
#endif
case 'v':
verify = 1;
vcrc = simple_strtoul(optarg, NULL, 0);
break;
case 'V':
if (!crc_from_file(optarg, &vcrc))
verify = 1;
break;
default:
return COMMAND_ERROR_USAGE;
}
}
if (!filegiven && optind == argc)
return COMMAND_ERROR_USAGE;
if (optind < argc) {
if (parse_area_spec(argv[optind], &start, &size)) {
printf("could not parse area description: %s\n", argv[optind]);
return 1;
}
}
if (file_crc(filename, start, size, &crc, &total) < 0)
return 1;
printf("CRC32 for %s 0x%08lx ... 0x%08lx ==> 0x%08lx",
filename, (ulong)start, (ulong)start + total - 1, crc);
#ifdef CONFIG_CMD_CRC_CMP
if (vfilename) {
size = total;
puts("\n");
if (file_crc(vfilename, start, size, &vcrc, &total) < 0)
return 1;
}
#endif
if (verify && crc != vcrc) {
printf(" != 0x%08lx ** ERROR **", vcrc);
err = 1;
}
printf("\n");
return err;
}
