DB_MINOR
return (map_seg(hdp, idx, PROT_READ, DB_MINOR));
return (map_seg(hdp, idx, PROT_READ | PROT_WRITE, DB_MINOR));
count[DB_MINOR]++;
idx = next[DB_MINOR];
next[DB_MINOR]++;
#define DB_CURRENT_VERSION (DB_MAGIC|DB_MAJOR<<8|DB_MINOR)