Test the nx-gzip function:
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=========================
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Verify that following device exists:
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/dev/crypto/nx-gzip
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If you get a permission error run as sudo or set the device permissions:
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sudo chmod go+rw /dev/crypto/nx-gzip
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However, chmod may not survive across boots. You may create a udev file such
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as:
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/etc/udev/rules.d/99-nx-gzip.rules
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To manually build and run:
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$ gcc -O3 -I./include -o gzfht_test gzfht_test.c gzip_vas.c
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$ gcc -O3 -I./include -o gunz_test gunz_test.c gzip_vas.c
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Compress any file using Fixed Huffman mode. Output will have a .nx.gz suffix:
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$ ./gzfht_test gzip_vas.c
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file gzip_vas.c read, 6413 bytes
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compressed 6413 to 3124 bytes total, crc32 checksum = abd15e8a
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Uncompress the previous output. Output will have a .nx.gunzip suffix:
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./gunz_test gzip_vas.c.nx.gz
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gzHeader FLG 0
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00 00 00 00 04 03
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gzHeader MTIME, XFL, OS ignored
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computed checksum abd15e8a isize 0000190d
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stored checksum abd15e8a isize 0000190d
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decomp is complete: fclose
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Compare two files:
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$ sha1sum gzip_vas.c.nx.gz.nx.gunzip gzip_vas.c
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bf43e3c0c3651f5f22b6f9784cd9b1eeab4120b6 gzip_vas.c.nx.gz.nx.gunzip
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bf43e3c0c3651f5f22b6f9784cd9b1eeab4120b6 gzip_vas.c
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Note that the code here are intended for testing the nx-gzip hardware function.
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They are not intended for demonstrating performance or compression ratio.
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By being simplistic these selftests expect to allocate the entire set of source
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and target pages in the memory so it needs enough memory to work.
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For more information and source code consider using:
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https://github.com/libnxz/power-gzip
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