Possible dd bug - no close of "if=/of=" fds

[HARDY, Steven]

Hello, 

I'm experiencing some problems trying to use "dd" to load firmware onto a
device, and I guess this could be a potential bug?

- dd if=myfirmware.bin of=/dev/mydevice

The problem is that /dev/mydevice returns -EIO if the load has been
unsuccessful, but dd always returns 0 whether this occurs or not.

I was expecting dd to explicitly close the if=/of= file descriptors and
return any errors, but looking at the code it seems to close only
stdin/stdout, and does not check for successful close of the input and
output files??

I am using coreutils-5.9.3 - any help or suggestions much appreciated.

Steve Hardy



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