Print list of bad blocks in NAND flash from user space

Is there any user space tool that can retrieve and dump the list of bad blocks in a NAND flash device? I've checked the mtdinfo command line utility, and also searched /proc and /sys, but couldn't find anything. I am looking for something suitable for use from a shell script. I could parse dmesg as the kernel prints bad block information on init, but I am hoping there will be a better way.