HelenOS sources

GZIP_FLAG_FEXTRA   46 boot/generic/src/gzip.c #define GZIP_FLAG_FEXTRA    UINT8_C(1 << 2)
GZIP_FLAG_FEXTRA   45 uspace/lib/compress/gzip.c #define GZIP_FLAG_FEXTRA    UINT8_C(1 << 2)
HelenOS homepage, sources at GitHub