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Again, with a dummy implementation for Unix and Windows backends.
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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For the native versions, this is currently dummied out, always returning
an error number. The idea is to laster wrap the libtar interface around
a directory iterator, here we need that method to support the existing
use case in tar2sqfs.
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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For regular iterator types, it's a no-op, for the tree iterator,
it skips the sub tree.
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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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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This basically re-uses the libxfrm pack/unpack tests, but runs
the data through a stream wrapper.
When de-compressing, we have a ridiculously tiny input buffer,
to force the wrapper to snort up the data in several attempts
until the it can decompress something. We read the data byte-by-byte
to force the wraper to internally cache the uncompressed data and
spoon feed it to us. It has to be completely transparent to us that
it internaly decompresses and also reads transparently across
concatenated streams.
When compressing, we only require that the output is smaller than
the input and not equal to it. We also require the wrapper to flush
the wrapped stream when it is flushed. We then test if the compressed
data can be unpacked again.
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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By cobbling together the xattr lines manually in libtar, the
need (and thus the function itself) are removed.
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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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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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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Move it to a separate libxfrm library, where it can be independently
tested as well. The bulk of the new code is also mainly test cases
for the compressors.
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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Implement grab/drop functions to increase/decrease reference count
and destroy the object if the count drops to 0.
Make sure that all objects that maintain internal references actually
grab that reference, duplicate it in the copy function, drop it in
the destroy handler.
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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Propperly set the parent eof flag and not a local one that isn't
accessed at all.
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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The zlib library uses a typedef'd uInt type for ranges which may be
smaller than size_t.
The complicated clamping to the uInt range is technically not needed,
as the buffer size can grow at most to BUFSZ anyway, and it also
confuses coverity.
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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