Symbol: F_FSINOUT
sys/sys/fcntl.h
267
#define _FCNRW(c, t) _FCN(F_FSINOUT, (c), (int)sizeof(t))
sys/sys/fcntl.h
278
#define _FCNRW_FSPRIV(f, c, t) _FCN_FSPRIV(F_FSINOUT, (f), (c), (int)sizeof(t))