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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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- When printing an error, specify the filename and line number
- Always print an error, including out of memory conditions
- Fail if we encounter a line that we don't recognize
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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The xattr values are not strings, they are arbitrary byte blobs.
To be on the safe side tough, we should still allocate the space for
the extra null byte and propperly initialize the buffer.
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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The line-by-line reading function in the io library was specifically
added for this kind of use case, so we don't have to handle trimming
of lines, don't have to touch getline() and it's convoluted error
handling (return value -1 could mean either EOF or error).
The code that searches for '\n' and replaces it with '\0' can be
removed as well and a memory leak involving "line" is removed along
the way.
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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- Some of the error/cleanup paths are merged.
- Struct fields don't have to be set to NULL if the entire struct is
free'd immediately after.
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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Similar to the hex blob decoder, we need this once for tar and
once for the filemap xattr parser.
Simply add a single, central implementation to libutil, with a
simple unit test, and then use it in both libtar and gensquashfs.
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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Since we need it twice (once for tar, once for the filemap xattr
parser), add a single, central implementation to libutil, add a
unit test for that implementation and then use it in both libtar
and gensquashfs.
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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