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Many library destructor functions (like free()) allow a NULL
pointer as input, and do nothing in that case.
This allows easier cleanup patterns: initialize pointers to NULL
and then always pass them to the destroyer functions, no need for
verbose goto/if-else patterns.
Signed-off-by: Luca Boccassi <luca.boccassi@microsoft.com>
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On systems like Windows, the dynamic library and applications can
easily end up being linked against different runtime libraries, so
applications cannot be expected to be able to free() any malloc'd
pointer that the library returns.
This commit adds an sqfs_free function so the application can pass
pointers back to the library to call the correct free() implementation.
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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Avoid namespace polution. Make sure all exportet symbols are prefixed
with either sqfs_ or SQFS_.
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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Make every dynamically allocated, opaque data structure inherit from
a common sqfs_object_t structure with common entry points (e.g. destroy).
This removes tons of public API functions and replaces them with a
simple sqfs_destroy instead. If semantics of the (until now implicit)
object system need to be extended, it can be much more conveniantely
done this way.
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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It optionally allows code that does tree traversal to start at an
inode that it obtained previously and makes it easier to keep state
externally.
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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Signed-off-by: Benjamin Drung <benjamin.drung@cloud.ionos.com>
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Instead of using int or unsigned int for generic function flag
arguments, consistently use an unsigned, fixed size type.
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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- Padd the compressor config union
- 128 bytes aught to be enough for everyone, i.e. future compressors.
- Insist that the padding space is initialized to 0. If a field gets
added to an existing compressor, it can test for 0 as a sentinel
value.
- Add a size field to the hook structure, aka "the Microsoft way".
- The explanation is in the comment.
- Don't make the Microsoft mistake of checking for >=, insist on *exact*
size match. Future users will need a fallback if their hooks are
rejected. But at least they will be rejected instead of silently not
being used.
- Add an unsupported flag check to the dir tree reader.
- Add a basic abi unit test that, for now, checks the size of the compressor
config struct fields.
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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This is a fully automated search and replace, i.e. I ran this:
git grep -l uint8_t | xargs sed -i 's/uint8_t/sqfs_u8/g'
git grep -l uint16_t | xargs sed -i 's/uint16_t/sqfs_u16/g'
git grep -l uint32_t | xargs sed -i 's/uint32_t/sqfs_u32/g'
git grep -l uint64_t | xargs sed -i 's/uint64_t/sqfs_u64/g'
git grep -l int8_t | xargs sed -i 's/int8_t/sqfs_s8/g'
git grep -l int16_t | xargs sed -i 's/int16_t/sqfs_s16/g'
git grep -l int32_t | xargs sed -i 's/int32_t/sqfs_s32/g'
git grep -l int64_t | xargs sed -i 's/int64_t/sqfs_s64/g'
and than added the appropriate definitions to sqfs/predef.h
The whole point being better compatibillity with platforms that may
not have an stdint.h with the propper definitions.
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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