ref: ec518776982d6d1173683a1108e7537fc329ed43
dir: /sys/src/cmd/disk/sacfs/sacfs.h/
typedef struct SacHeader SacHeader; typedef struct SacDir SacDir; enum { Magic = 0x5acf5, NAMELEN = 28, }; struct SacDir { char name[NAMELEN]; char uid[NAMELEN]; char gid[NAMELEN]; uchar qid[4]; uchar mode[4]; uchar atime[4]; uchar mtime[4]; uchar length[8]; uchar blocks[8]; }; struct SacHeader { uchar magic[4]; uchar length[8]; uchar blocksize[4]; uchar md5[16]; };