[PATCH v3 05/15] errno: add POSIX error codes EMSGSIZE, ECONNREFUSED to the ABI

From: Christopher Clark <christopher.w.clark@gmail.com>
To: xen-devel@lists.xenproject.org
Cc: Stefano Stabellini <sstabellini@kernel.org>,
	Wei Liu <wei.liu2@citrix.com>,
	Ross Philipson <ross.philipson@gmail.com>,
	Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
	George Dunlap <George.Dunlap@eu.citrix.com>,
	Andrew Cooper <andrew.cooper3@citrix.com>,
	Jason Andryuk <jandryuk@gmail.com>,
	Ian Jackson <ian.jackson@eu.citrix.com>,
	Rich Persaud <persaur@gmail.com>, Tim Deegan <tim@xen.org>,
	Daniel Smith <dpsmith@apertussolutions.com>,
	Julien Grall <julien.grall@arm.com>,
	Paul Durrant <paul.durrant@citrix.com>,
	Jan Beulich <jbeulich@suse.com>,
	James McKenzie <james@bromium.com>,
	Eric Chanudet <eric.chanudet@gmail.com>,
	Roger Pau Monne <roger.pau@citrix.com>
Subject: [PATCH v3 05/15] errno: add POSIX error codes EMSGSIZE, ECONNREFUSED to the ABI
Date: Sun,  6 Jan 2019 23:42:38 -0800	[thread overview]
Message-ID: <1546846968-7372-6-git-send-email-christopher.w.clark@gmail.com> (raw)
In-Reply-To: <1546846968-7372-1-git-send-email-christopher.w.clark@gmail.com>

EMSGSIZE: Argo's sendv operation will return EMSGSIZE when an excess amount
of data, across all iovs, has been supplied, exceeding either the statically
configured maximum size of a transmittable message, or the (variable) size
of the ring registered by the destination domain.

ECONNREFUSED: Argo's register operation will return ECONNREFUSED if a ring
is being registered to communicate with a specific remote domain that does
exist but is not argo-enabled.

These codes are described by POSIX here:
http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/errno.h.html
    EMSGSIZE     : "Message too large"
    ECONNREFUSED : "Connection refused".

The numeric values assigned to each are taken from Linux, as is the case
for the existing error codes.
    EMSGSIZE     : 90
    ECONNREFUSED : 111

Signed-off-by: Christopher Clark <christopher.clark6@baesystems.com>
Acked-by: Jan Beulich <jbeulich@suse.com>
---
 xen/include/public/errno.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/xen/include/public/errno.h b/xen/include/public/errno.h
index 305c112..e1d02fc 100644
--- a/xen/include/public/errno.h
+++ b/xen/include/public/errno.h
@@ -102,6 +102,7 @@ XEN_ERRNO(EILSEQ,	84)	/* Illegal byte sequence */
 XEN_ERRNO(ERESTART,	85)	/* Interrupted system call should be restarted */
 #endif
 XEN_ERRNO(ENOTSOCK,	88)	/* Socket operation on non-socket */
+XEN_ERRNO(EMSGSIZE,	90)	/* Message too large. */
 XEN_ERRNO(EOPNOTSUPP,	95)	/* Operation not supported on transport endpoint */
 XEN_ERRNO(EADDRINUSE,	98)	/* Address already in use */
 XEN_ERRNO(EADDRNOTAVAIL, 99)	/* Cannot assign requested address */
@@ -109,6 +110,7 @@ XEN_ERRNO(ENOBUFS,	105)	/* No buffer space available */
 XEN_ERRNO(EISCONN,	106)	/* Transport endpoint is already connected */
 XEN_ERRNO(ENOTCONN,	107)	/* Transport endpoint is not connected */
 XEN_ERRNO(ETIMEDOUT,	110)	/* Connection timed out */
+XEN_ERRNO(ECONNREFUSED,	111)	/* Connection refused */
 
 #undef XEN_ERRNO
 #endif /* XEN_ERRNO */
-- 
2.7.4


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