[Xen-devel] [PATCH v4 05/14] errno: add POSIX error codes EMSGSIZE, ECONNREFUSED to the ABI

[Christopher Clark <christopher.w.clark@xxxxxxxxx>]

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@xxxxxxxxxxxxxx>
Acked-by: Jan Beulich <jbeulich@xxxxxxxx>
---
 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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