On Tuesday 27 January 2009 02:31:52 pm Scott Wood wrote:
E Robertson wrote:
I did the following: memcpy (gd->bd->bi_enetaddr, MACAddress, sizeof(gd->bd->bi_enetaddr)); memcpy (dupMACAddress, MACAddress, sizeof(dupMACAddress));
printf("Before %02X:%02X:%02X:%02X:%02X:%02X\n",dupMACAddress[0],dupMACAddress[1], dupMACAddress[2], dupMACAddress[3], dupMACAddress[4], dupMACAddress[5]);
sprintf(env_ethaddr,"%02X:%02X:%02X:%02X:%02X:%02X",dupMACAddress[0],dupMACAddress[1], dupMACAddress[2], dupMACAddress[3], dupMACAddress[4], dupMACAddress[5]); printf("After %02X:%02X:%02X:%02X:%02X:%02X\n",dupMACAddress[0], dupMACAddress[1], dupMACAddress[2], dupMACAddress[3], dupMACAddress[4], dupMACAddress[5]); printf("ethaddr %02X:%02X:%02X:%02X:%02X:%02X\n",gd->bd->bi_enetaddr[0], gd->bd->bi_enetaddr[1], gd->bd->bi_enetaddr[2], gd->bd->bi_enetaddr[3], gd->bd->bi_enetaddr[4], gd->bd->bi_enetaddr[5]);
and I got this:
Before 00:04:A6:00:6A:E6 After 36:00:A6:00:6A:E6 ethaddr 00:04:A6:00:6A:E6 Alse env_ethaddr has the correct correct.
Looks like you're overflowing a buffer -- 0x36 0x00 are the last two bytes of the sprintf output. Where are env_ethaddr and dupMACaddress defined?
Ah!! Yes, big user error! I forgot about the string termination.
Thanks.
-Scott
