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Test against various invariants:
- Every non-root node must have a name
- The root node muts not have a name
- The name must not be ".." or "."
- The name must not contain '/'
- The loop that chases parent pointers must terminate, i.e. we must
never reach the starting state again (link loop).
Furthermore, make sure the sum of all path components plus separators
does not overflow.
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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After trying removing many instances of `struct stat`, there is only
one user of inode_stat left, so move the function there.
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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This commit rewrites the libtar write paths to use libfstream insead of
a FILE pointer. Also, the libcommon file extraction function is remodeled
to use libfstream.
In accordance, rdsquashfs, sqfs2tar and sqfsdiff have some minor
adjustments made to work with the ported libtar and libcommon.
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 the xattr extraction and repacking to xattr.c
- Don't on-the-fly delete the tar xattr list, use the function
from libtar.a
- Split minor tasks into static helper functions
- creating a libtar xattr struct from libsqfs xattr data
- finding a hard link entry from current path and inode number
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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This comit breaks sqfs2tar into multiple files:
- options.c contains the command line argument processing
- write_tree.c contains the code for generating the actual tar archive
- sqfs2tar.c contains what is left
- A header is added for glueing it all together.
No actual code is changed.
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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