nvf_hdr_t
nvf_hdr_t hdr;
DTRACE_PROBE1(hdr, nvf_hdr_t *, &hdr);
nvflen = nvllen + sizeof (nvf_hdr_t);
((nvf_hdr_t *)nvfbuf)->nvfh_magic = NVF_HDR_MAGIC;
((nvf_hdr_t *)nvfbuf)->nvfh_ver = NVF_HDR_VERSION;
((nvf_hdr_t *)nvfbuf)->nvfh_size = nvllen;
((nvf_hdr_t *)nvfbuf)->nvfh_datasum = nvf_chksum((char *)nvlbuf,
((nvf_hdr_t *)nvfbuf)->nvfh_hdrsum = nvf_chksum((char *)nvfbuf,
sizeof (nvf_hdr_t));
bcopy(nvlbuf, nvfbuf + sizeof (nvf_hdr_t), nvllen);