7 May
2013
7 May
'13
5:16 p.m.
"Jonas" == Jonas Gorski jogo@openwrt.org writes:
Jonas> Common image usage is uImage + appended rootfs, so the the uImage data Jonas> is only part of the total image. So read out and use the header's Jonas> ih_size field instead of the total file size.
Jonas> To prevent reading over the end of the buffer, check that the image file Jonas> is big enough to contain the data before calculating its checksum.
Jonas> Before: Jonas> ~# mkimage -l dir665_fw_100NA.bin Jonas> mkimage: ERROR: "dir665_fw_100NA/dir665_fw_100NA.bin" has corrupted data!
A related usecase is checking the version info of whatever is written to flash - E.G.
mkimage -l /dev/mtdN
But that already fails as stat returns st_size=0 for devices.
--
Bye, Peter Korsgaard