ref: 5c398c1ebdf31c58964e48a0de5cfb45c38bb920
dir: /sys/src/cmd/cdfs/fns.h/
Buf* bopen(long (*)(Buf*, void*, long, ulong), int, int, int); long bread(Buf*, void*, long, vlong); void bterm(Buf*); long bufread(Otrack*, void*, long, vlong); long bufwrite(Otrack*, void*, long); long bwrite(Buf*, void*, long); void *emalloc(ulong); char* geterrstr(void); Drive* mmcprobe(Scsi*);