From: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Date: Tue, 6 Jan 2009 02:07:07 +0000 (-0800)
Subject: af_iucv: New error return codes for connect()
X-Git-Tag: v2.6.29-rc1~502^2~10
X-Git-Url: http://www.pilppa.org/gitweb/gitweb.cgi?a=commitdiff_plain;h=55cdea9ed9cf2d76993e40ed7a1fc649a14db07c;p=linux-2.6-omap-h63xx.git

af_iucv: New error return codes for connect()

If the iucv_path_connect() call fails then return an error code that
corresponds to the iucv_path_connect() failure condition; instead of
returning -ECONNREFUSED for any failure.

This helps to improve error handling for user space applications
(e.g.  inform the user that the z/VM guest is not authorized to
connect to other guest virtual machines).

The error return codes are based on those described in connect(2).

Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Signed-off-by: Ursula Braun <ursula.braun@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/net/iucv/af_iucv.c b/net/iucv/af_iucv.c
index af3192d2a5a..1077bc4e6e2 100644
--- a/net/iucv/af_iucv.c
+++ b/net/iucv/af_iucv.c
@@ -494,7 +494,21 @@ static int iucv_sock_connect(struct socket *sock, struct sockaddr *addr,
 	if (err) {
 		iucv_path_free(iucv->path);
 		iucv->path = NULL;
-		err = -ECONNREFUSED;
+		switch (err) {
+		case 0x0b:	/* Target communicator is not logged on */
+			err = -ENETUNREACH;
+			break;
+		case 0x0d:	/* Max connections for this guest exceeded */
+		case 0x0e:	/* Max connections for target guest exceeded */
+			err = -EAGAIN;
+			break;
+		case 0x0f:	/* Missing IUCV authorization */
+			err = -EACCES;
+			break;
+		default:
+			err = -ECONNREFUSED;
+			break;
+		}
 		goto done;
 	}