On 06/30/2017 09:21 AM, Stefan Hajnoczi wrote:
> 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.
So this is how vsocks are going to look...
There is not going to be a way to lookup an vsock address?
Since the format of the clientaddr parameter shouldn't
that be documented in the man page?
I guess a general question, is this new mount type
documented anywhere?
steved.
>
> 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)
>
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