dd handles skip weirdly
disk=/dev/sda8
dd if=$disk bs=8M count=1 skip=1000 of=/dev/null #ok
dd if=$disk bs=8M count=1 skip=1000K of=/dev/null #reads whole disk! as seek
fails
I had a 10s look at the source and noticed a comment
saying POSIX doesn't specify what we should do when
skipping past the end of input. For seekable files though,
reading the whole thing is unexpected to me at least.
I would expect it to do:
if (seekable && !seek(skip_len))
exit(EXIT_FAILURE);
Pádraig.
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