CHAN_EXTENDED_READ
case CHAN_EXTENDED_READ:
(c->extended_usage == CHAN_EXTENDED_READ ||
else if (c->extended_usage == CHAN_EXTENDED_READ ||
c->extended_usage == CHAN_EXTENDED_READ)
(c->extended_usage == CHAN_EXTENDED_READ && \
if (c->extended_usage != CHAN_EXTENDED_READ &&
ignore_fderr ? CHAN_EXTENDED_IGNORE : CHAN_EXTENDED_READ,