From f511dce3f6598b75505a553ee40036bdb8167042 Mon Sep 17 00:00:00 2001
From: Joan Lledó <joanlluislledo@gmail.com>
Date: Sat, 11 Aug 2018 18:17:07 +0200
Subject: lwip: poll(): return EIO when POLLERR is set

Needed to properly support poll in glibc (_hurd_select).

* lwip/io-ops.c (lwip_io_select_common):
If POLLERR is set, return EIO.
---
 lwip/io-ops.c | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'lwip')

diff --git a/lwip/io-ops.c b/lwip/io-ops.c
index 636c26f7..1429bc55 100644
--- a/lwip/io-ops.c
+++ b/lwip/io-ops.c
@@ -229,6 +229,9 @@ lwip_io_select_common (struct sock_user *user,
 
   if (ret > 0)
     {
+      if (fdp.revents & POLLERR)
+	return EIO;
+
       if (fdp.revents & POLLIN)
 	*select_type |= SELECT_READ;
 
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