1*4882a593SmuzhiyunTest the nx-gzip function: 2*4882a593Smuzhiyun========================= 3*4882a593Smuzhiyun 4*4882a593SmuzhiyunVerify that following device exists: 5*4882a593Smuzhiyun /dev/crypto/nx-gzip 6*4882a593SmuzhiyunIf you get a permission error run as sudo or set the device permissions: 7*4882a593Smuzhiyun sudo chmod go+rw /dev/crypto/nx-gzip 8*4882a593SmuzhiyunHowever, chmod may not survive across boots. You may create a udev file such 9*4882a593Smuzhiyunas: 10*4882a593Smuzhiyun /etc/udev/rules.d/99-nx-gzip.rules 11*4882a593Smuzhiyun 12*4882a593Smuzhiyun 13*4882a593SmuzhiyunTo manually build and run: 14*4882a593Smuzhiyun$ gcc -O3 -I./include -o gzfht_test gzfht_test.c gzip_vas.c 15*4882a593Smuzhiyun$ gcc -O3 -I./include -o gunz_test gunz_test.c gzip_vas.c 16*4882a593Smuzhiyun 17*4882a593Smuzhiyun 18*4882a593SmuzhiyunCompress any file using Fixed Huffman mode. Output will have a .nx.gz suffix: 19*4882a593Smuzhiyun$ ./gzfht_test gzip_vas.c 20*4882a593Smuzhiyunfile gzip_vas.c read, 6413 bytes 21*4882a593Smuzhiyuncompressed 6413 to 3124 bytes total, crc32 checksum = abd15e8a 22*4882a593Smuzhiyun 23*4882a593Smuzhiyun 24*4882a593SmuzhiyunUncompress the previous output. Output will have a .nx.gunzip suffix: 25*4882a593Smuzhiyun./gunz_test gzip_vas.c.nx.gz 26*4882a593SmuzhiyungzHeader FLG 0 27*4882a593Smuzhiyun00 00 00 00 04 03 28*4882a593SmuzhiyungzHeader MTIME, XFL, OS ignored 29*4882a593Smuzhiyuncomputed checksum abd15e8a isize 0000190d 30*4882a593Smuzhiyunstored checksum abd15e8a isize 0000190d 31*4882a593Smuzhiyundecomp is complete: fclose 32*4882a593Smuzhiyun 33*4882a593Smuzhiyun 34*4882a593SmuzhiyunCompare two files: 35*4882a593Smuzhiyun$ sha1sum gzip_vas.c.nx.gz.nx.gunzip gzip_vas.c 36*4882a593Smuzhiyunbf43e3c0c3651f5f22b6f9784cd9b1eeab4120b6 gzip_vas.c.nx.gz.nx.gunzip 37*4882a593Smuzhiyunbf43e3c0c3651f5f22b6f9784cd9b1eeab4120b6 gzip_vas.c 38*4882a593Smuzhiyun 39*4882a593Smuzhiyun 40*4882a593SmuzhiyunNote that the code here are intended for testing the nx-gzip hardware function. 41*4882a593SmuzhiyunThey are not intended for demonstrating performance or compression ratio. 42*4882a593SmuzhiyunBy being simplistic these selftests expect to allocate the entire set of source 43*4882a593Smuzhiyunand target pages in the memory so it needs enough memory to work. 44*4882a593SmuzhiyunFor more information and source code consider using: 45*4882a593Smuzhiyunhttps://github.com/libnxz/power-gzip 46