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- Bail early on empty directories without touching the meta readers.
- Aport the directory read loop if we can't even read a header anymore,
no matter if there are bytes remaining.
- Also add that same condition to the inner loop.
The later two actually caused a numeric overflow on some particularly
malformed squashfs images, going into a RAM filling infinite loop.
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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Make tree node list sort and recursive variant available and independend
of the fstree_t.
This is considered cleaner, since the fstree_t actually isn't needed for
any of this and we can just call the recusvie sort on the root instead,
and we can use the sort implementation directly for things like the
upcoming unit test.
Also this commit splits up the merge/sort implementation into a seperate
split and merge functions to make the code somewhat more readable.
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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Replace default_$FIELD with a struct stat. Merge the rest of
add_node/add_file into mknode and add by path+stat.
Expose the mknode function and replace all the duplicated node pointer
arithmetic magic with a call to mknode.
Plus a generic cleanup by utlizing new util functions.
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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