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authorTrond Myklebust <Trond.Myklebust@netapp.com>2009-08-20 02:12:34 +0400
committerTrond Myklebust <Trond.Myklebust@netapp.com>2009-08-20 02:22:15 +0400
commit7d7ea882898f23989209d0359691b356f73240dc (patch)
tree8bd90c5c728302b8460f1f451d23168c8fc99433 /fs/nfs/nfs4namespace.c
parente571cbf1a4f8d8b6cfd4898df718dae84c75a8e1 (diff)
downloadlinux-7d7ea882898f23989209d0359691b356f73240dc.tar.xz
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: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs/nfs/nfs4namespace.c')
-rw-r--r--fs/nfs/nfs4namespace.c18
1 files changed, 17 insertions, 1 deletions
diff --git a/fs/nfs/nfs4namespace.c b/fs/nfs/nfs4namespace.c
index ef22ee89aa77..2636c26d56fa 100644
--- a/fs/nfs/nfs4namespace.c
+++ b/fs/nfs/nfs4namespace.c
@@ -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;