static int error_from_dbm (int refnum)
{
Dbm * db;
if (!(db = lookup_dbm(refnum)))
return -1;
return sdbm_error(db->db);
}
static int error_from_dbm (int refnum)
{
Dbm * db;
/* dbm_open() returns -1 on failure, and we save errno */
if (refnum == -1)
return last_failed_open_errno;
if (!(db = lookup_dbm(refnum)))
return -1;
return sdbm_error(db->db);
}
static int write_to_dbm (int refnum, char *key, char *data, int replace)
{
Dbm *db;
Datum k, d;
if (!(db = lookup_dbm(refnum)))
return -1;
k.dptr = key;
k.dsize = strlen(key);
d.dptr = data;
d.dsize = strlen(data);
if (sdbm_store(db->db, k, d, replace? DBM_REPLACE : DBM_INSERT))
return sdbm_error(db->db);
return 0;
}
static int delete_from_dbm (int refnum, char *key)
{
Dbm * db;
Datum k;
int retval;
if (!(db = lookup_dbm(refnum)))
return -1;
k.dptr = key;
k.dsize = strlen(key);
retval = sdbm_delete(db->db, k);
if (retval == 1)
return -1; /* Key Not found */
else if (retval == -1)
return sdbm_error(db->db); /* Errno error */
else
return 0;
}
