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When converting a SquashFS image to a tarball, it makes no sense to
refuse conversion if the filename is considered evil by the OS.
This patch adds an option to is_filename_sane to check if the OS has
a problem with the given file name. sqfs2tar sets it to false and
converts everything while rdsquashfs sets it to true when unpacking.
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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There were only a hand full of instances outside libsquashfs that used
the alloc code. In most cases, the thing allocated hat its size derived
from something already in memory anyway, so it is safe to assume its
size fits into a size_t.
At the same time, the opencoded Windows path conversion functions are
all unified into a single helper function.
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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- Add an explicit "you're holding it wrong" error code.
- Consistently return error codes and not have some special places
where -1 is returned.
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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The liblzo2 library is licensed under GPLv2, so it is not possible to
distribute binaries of libsquashfs that link against liblzo2 under
LGPL.
This commit moves the LZO compressor implementation to libcommon,
where this isn't a problem, since the tools themselves are licensed
under GPLv3.
It removes the ability of libsquashfs to read or generate LZO compressed
SquashFS images, but the tools still can.
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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In most cases, including unistd.h and fcntl.h was a left over anyway.
In the cases where it was not, move it to compat.h.
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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As usual, Windows has things different and is the platform where
the problem was actually discovered.
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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- Instead of an open coded version, check against a
list of bad names. On windows, the comparison needs
to be done case insensitive.
- If compiling for Windows, include the magic DOS
device names in that list.
- Also classify filenames as 'insane' if they contain
back slashes, on all platforms.
- If compiling for Windows, check for reserved characters.
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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I tested FreeBSD, DragonflyBSD, NetBSD and OpenBSD and the endian
macros weren't necessary (and in fact caused errors) on all of them.
Because OpenBSD ships with an ancient GCC that doesn't support the
checked addition/multiplication builtins, the build there would fail
unless built with CC=cc or CC=clang. I changed configure.ac to prefer
cc over gcc, so that the distribution's compiler preference is
respected. (The default is [gcc cc]). I had to move AC_PROG_CC above
LT_INIT because otherwise LT_INIT would run AC_PROG_CC first, and we
wouldn't have a chance to use non-default parameters.
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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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Instead, use stdio FILE pointers. On POSIX systems, use fileno to get
the file descriptor and hopefully create sparase files.
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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Partially revers 2b7df394057c013fd042b85a4d5fd0104ba4a9be.
Making the queue fill the entire RAM had some unintended side
effects that need further investigation. For now, revert back
to the old behaviour.
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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Until now, filenames containing '/' or being equal to '..' or '.' where
not handled explicitly, because they are canonicalized later, which
will then fail.
This commit adds an explicit check to make those fail immediately with
a clear, specific error message.
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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That is IMO less confusing and express what it is (i.e. what it has
become) more clearly, i.e. common code shared by the utilities.
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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