Neither libtirpc nor getprotobyname(3) know about AF_VSOCK. For similar
reasons as for "rdma"/"rmda6", translate "vsock" manually in getport.c.
It is now possible to mount a file system from the host (hypervisor)
over AF_VSOCK like this:
(guest)$ mount.nfs 2:/export /mnt -v -o clientaddr=3,proto=vsock
The VM's cid address is 3 and the hypervisor is 2.
Signed-off-by: Stefan Hajnoczi <stefanha@xxxxxxxxxx>
---
support/nfs/getport.c | 16 ++++++++++++----
1 file changed, 12 insertions(+), 4 deletions(-)
diff --git a/support/nfs/getport.c b/support/nfs/getport.c
index 081594c..0b857af 100644
--- a/support/nfs/getport.c
+++ b/support/nfs/getport.c
@@ -217,8 +217,7 @@ nfs_get_proto(const char *netid, sa_family_t *family, unsigned long *protocol)
struct protoent *proto;
/*
- * IANA does not define a protocol number for rdma netids,
- * since "rdma" is not an IP protocol.
+ * IANA does not define protocol numbers for non-IP netids.
*/
if (strcmp(netid, "rdma") == 0) {
*family = AF_INET;
@@ -230,6 +229,11 @@ nfs_get_proto(const char *netid, sa_family_t *family, unsigned long *protocol)
*protocol = NFSPROTO_RDMA;
return 1;
}
+ if (strcmp(netid, "vsock") == 0) {
+ *family = AF_VSOCK;
+ *protocol = 0;
+ return 1;
+ }
nconf = getnetconfigent(netid);
if (nconf == NULL)
@@ -258,14 +262,18 @@ nfs_get_proto(const char *netid, sa_family_t *family, unsigned long *protocol)
struct protoent *proto;
/*
- * IANA does not define a protocol number for rdma netids,
- * since "rdma" is not an IP protocol.
+ * IANA does not define protocol numbers for non-IP netids.
*/
if (strcmp(netid, "rdma") == 0) {
*family = AF_INET;
*protocol = NFSPROTO_RDMA;
return 1;
}
+ if (strcmp(netid, "vsock") == 0) {
+ *family = AF_VSOCK;
+ *protocol = 0;
+ return 1;
+ }
proto = getprotobyname(netid);
if (proto == NULL)
--
2.7.4
--
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