GJ_RECORD_HEADER_MAGIC
strlcpy(hdr.jrh_magic, GJ_RECORD_HEADER_MAGIC, sizeof(hdr.jrh_magic));
bcopy(GJ_RECORD_HEADER_MAGIC, data, sizeof(GJ_RECORD_HEADER_MAGIC));
data += sizeof(GJ_RECORD_HEADER_MAGIC);
if (strcmp(hdr->jrh_magic, GJ_RECORD_HEADER_MAGIC) != 0)
char jrh_magic[sizeof(GJ_RECORD_HEADER_MAGIC)];