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Commit 7d7ea882 authored by Trond Myklebust's avatar Trond Myklebust
Browse files

NFS: Use the DNS resolver in the mount code. 



In the referral code, use it to look up the new server's ip address if the
fs_locations attribute contains a hostname.

Signed-off-by: default avatarTrond Myklebust <Trond.Myklebust@netapp.com>
parent e571cbf1

fs/nfs/nfs4namespace.c

+17 −1
Original line number Diff line number Diff line
@@ -17,6 +17,7 @@ 
#include <linux/inet.h>

#include "internal.h"

#include "nfs4_fs.h"

#include "dns_resolve.h"



#define NFSDBG_FACILITY		NFSDBG_VFS
@@ -95,6 +96,20 @@ static int nfs4_validate_fspath(const struct vfsmount *mnt_parent, 
	return 0;

}



static size_t nfs_parse_server_name(char *string, size_t len,

		struct sockaddr *sa, size_t salen)

{

	ssize_t ret;



	ret = rpc_pton(string, len, sa, salen);

	if (ret == 0) {

		ret = nfs_dns_resolve_name(string, len, sa, salen);

		if (ret < 0)

			ret = 0;

	}

	return ret;

}



static struct vfsmount *try_location(struct nfs_clone_mount *mountdata,

				     char *page, char *page2,

				     const struct nfs4_fs_location *location)
@@ -121,7 +136,8 @@ static struct vfsmount *try_location(struct nfs_clone_mount *mountdata, 


		if (memchr(buf->data, IPV6_SCOPE_DELIMITER, buf->len))

			continue;

		mountdata->addrlen = rpc_pton(buf->data, buf->len,

		mountdata->addrlen = nfs_parse_server_name(buf->data,

				buf->len,

				mountdata->addr, mountdata->addrlen);

		if (mountdata->addrlen == 0)

			continue;