Datum
lo_tell(PG_FUNCTION_ARGS)
{
int32 fd = PG_GETARG_INT32(0);
int64 offset;
#ifdef PGXC
ereport(ERROR,
(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
errmsg("Postgres-XC does not support large object yet"),
errdetail("The feature is not currently supported")));
#endif
if (fd < 0 || fd >= cookies_size || cookies[fd] == NULL)
ereport(ERROR,
(errcode(ERRCODE_UNDEFINED_OBJECT),
errmsg("invalid large-object descriptor: %d", fd)));
offset = inv_tell(cookies[fd]);
/* guard against result overflow */
if (offset != (int32) offset)
ereport(ERROR,
(errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
errmsg("lo_tell result out of range for large-object descriptor %d",
fd)));
PG_RETURN_INT32((int32) offset);
}
Datum
lo_tell(PG_FUNCTION_ARGS)
{
int32 fd = PG_GETARG_INT32(0);
if (fd < 0 || fd >= cookies_size || cookies[fd] == NULL)
ereport(ERROR,
(errcode(ERRCODE_UNDEFINED_OBJECT),
errmsg("invalid large-object descriptor: %d", fd)));
PG_RETURN_INT32(inv_tell(cookies[fd]));
}
Datum
lo_tell(PG_FUNCTION_ARGS)
{
int32 fd = PG_GETARG_INT32(0);
int64 offset;
if (fd < 0 || fd >= cookies_size || cookies[fd] == NULL)
ereport(ERROR,
(errcode(ERRCODE_UNDEFINED_OBJECT),
errmsg("invalid large-object descriptor: %d", fd)));
offset = inv_tell(cookies[fd]);
/* guard against result overflow */
if (offset != (int32) offset)
ereport(ERROR,
(errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
errmsg("lo_tell result out of range for large-object descriptor %d",
fd)));
PG_RETURN_INT32((int32) offset);
}