From 7d7ea882898f23989209d0359691b356f73240dc Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Wed, 19 Aug 2009 18:12:34 -0400 Subject: [PATCH] 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 --- fs/nfs/nfs4namespace.c | 18 +++++++++++++++++- 1 file changed, 17 insertions(+), 1 deletion(-) diff --git a/fs/nfs/nfs4namespace.c b/fs/nfs/nfs4namespace.c index ef22ee8..2636c26 100644 --- a/fs/nfs/nfs4namespace.c +++ b/fs/nfs/nfs4namespace.c @@ -17,6 +17,7 @@ #include #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; -- 2.7.4