detrunc
int detrunc(struct denode *, uint32_t, int, struct ucred *, struct proc *);
(void) detrunc(dep, dep->de_FileSize, 0, cred, curproc);
error = detrunc(dep, (uint32_t)0, 0, NOCRED, ap->a_p);
(void)detrunc(ddep, ddep->de_FileSize, 0, NOCRED,
error = detrunc(ip, (uint32_t)0, IO_SYNC, cnp->cn_cred, cnp->cn_proc);
error = detrunc(dep, vap->va_size, 0, cred, ap->a_p);
detrunc(dep, osize, ioflag & IO_SYNC, NOCRED, curproc);
detrunc(dep, dep->de_FileSize, ioflag & IO_SYNC, NOCRED, curproc);
int detrunc(struct denode *, u_long, int);
(void) detrunc(dep, dep->de_FileSize, 0);
(void)detrunc(ddep, ddep->de_FileSize, 0);