Symbol: ufs_fiosdio
usr/src/uts/common/fs/ufs/ufs_vnops.c
1670
return (ufs_fiosdio(vp, (uint_t *)arg, flag, cr));
usr/src/uts/common/sys/fs/ufs_filio.h
95
extern int ufs_fiosdio(struct vnode *, uint_t *, int flag, struct cred *);