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firmware-utils/trx: add relative offset parameter 

* will be used for the WRT160NL board
 * patch by Bernhard Loos
 * note: rejected parts has been fixed


git-svn-id: svn://svn.openwrt.org/openwrt/trunk@20522 3c298f89-4303-0410-b956-a3cf2f4a3e73
master
Gabor Juhos 2010-03-27 17:38:26 +00:00
parent 596c2ea83d
commit 567def1d7f
1 changed files with 22 additions and 2 deletions
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24
tools/firmware-utils/src/trx.c
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@ -83,7 +83,7 @@ void usage(void) __attribute__ (( __noreturn__ ));
void usage(void)
{
fprintf(stderr, "Usage:\n");
fprintf(stderr, " trx [-2] [-o outfile] [-m maxlen] [-a align] [-b offset] \\\n");
fprintf(stderr, " trx [-2] [-o outfile] [-m maxlen] [-a align] [-b absolute offset] [-x relative offset]\n");
fprintf(stderr, " [-f file] [-f file [-f file [-f file (v2 only)]]]\n");
exit(EXIT_FAILURE);
}
@ -97,6 +97,7 @@ int main(int argc, char **argv)
char *e;
int c, i, append = 0;
size_t n;
ssize_t n2;
uint32_t cur_len;
unsigned long maxlen = TRX_MAX_LEN;
struct trx_header *p;
@ -118,7 +119,7 @@ int main(int argc, char **argv)
in = NULL;
i = 0;
while ((c = getopt(argc, argv, "-:2o:m:a:b:f:A:")) != -1) {
while ((c = getopt(argc, argv, "-:2o:m:a:x:b:f:A:")) != -1) {
switch (c) {
case '2':
/* take care that nothing was written to buf so far */
@ -218,6 +219,25 @@ int main(int argc, char **argv)
memset(buf + cur_len, 0, n - cur_len);
cur_len = n;
}
break;
case 'x':
errno = 0;
n2 = strtol(optarg, &e, 0);
if (errno || (e == optarg) || *e) {
fprintf(stderr, "illegal numeric string\n");
usage();
}
if (n2 < 0) {
if (-n2 > cur_len) {
fprintf(stderr, "WARNING: current length smaller then -x %d offset\n",n2);
cur_len = 0;
} else
cur_len += n2;
} else {
memset(buf + cur_len, 0, n2);
cur_len += n2;
}
break;
default:
usage();