From 639edb7295e3dfaeae6b5ba3e6b11721e2044562 Mon Sep 17 00:00:00 2001
From: Trond Myklebust <Trond.Myklebust@netapp.com>
Date: Tue, 10 Mar 2009 20:33:17 -0400
Subject: [PATCH] --- yaml --- r: 132299 b: refs/heads/master c:
 ef95d31e6de6be9602ce950b85fb7ab8af46ae42 h: refs/heads/master i:   132297:
 9a477e4f37914319fb1dad5f6cf38a8c0b556ed6   132295:
 36bc08c0c2f04aab62a98dd64cdfd33799473d91 v: v3

---
 [refs]                       |  2 +-
 trunk/fs/nfs/nfs4namespace.c | 15 ++++++++-------
 2 files changed, 9 insertions(+), 8 deletions(-)

diff --git a/[refs] b/[refs]
index bfc58829b2c3..a58b007ab257 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: eb9b55ab4d73280597fd183b367d50452f4d7846
+refs/heads/master: ef95d31e6de6be9602ce950b85fb7ab8af46ae42
diff --git a/trunk/fs/nfs/nfs4namespace.c b/trunk/fs/nfs/nfs4namespace.c
index 30befc39b3c6..2a2a0a7143ad 100644
--- a/trunk/fs/nfs/nfs4namespace.c
+++ b/trunk/fs/nfs/nfs4namespace.c
@@ -21,7 +21,9 @@
 #define NFSDBG_FACILITY		NFSDBG_VFS
 
 /*
- * Check if fs_root is valid
+ * Convert the NFSv4 pathname components into a standard posix path.
+ *
+ * Note that the resulting string will be placed at the end of the buffer
  */
 static inline char *nfs4_pathname_string(const struct nfs4_pathname *pathname,
 					 char *buffer, ssize_t buflen)
@@ -99,21 +101,20 @@ static struct vfsmount *try_location(struct nfs_clone_mount *mountdata,
 {
 	struct vfsmount *mnt = ERR_PTR(-ENOENT);
 	char *mnt_path;
-	int page2len;
+	unsigned int maxbuflen;
 	unsigned int s;
 
 	mnt_path = nfs4_pathname_string(&location->rootpath, page2, PAGE_SIZE);
 	if (IS_ERR(mnt_path))
 		return mnt;
 	mountdata->mnt_path = mnt_path;
-	page2 += strlen(mnt_path) + 1;
-	page2len = PAGE_SIZE - strlen(mnt_path) - 1;
+	maxbuflen = mnt_path - 1 - page2;
 
 	for (s = 0; s < location->nservers; s++) {
 		const struct nfs4_string *buf = &location->servers[s];
 		struct sockaddr_storage addr;
 
-		if (buf->len <= 0 || buf->len >= PAGE_SIZE)
+		if (buf->len <= 0 || buf->len >= maxbuflen)
 			continue;
 
 		mountdata->addr = (struct sockaddr *)&addr;
@@ -126,8 +127,8 @@ static struct vfsmount *try_location(struct nfs_clone_mount *mountdata,
 			continue;
 		nfs_set_port(mountdata->addr, NFS_PORT);
 
-		strncpy(page2, buf->data, page2len);
-		page2[page2len] = '\0';
+		memcpy(page2, buf->data, buf->len);
+		page2[buf->len] = '\0';
 		mountdata->hostname = page2;
 
 		snprintf(page, PAGE_SIZE, "%s:%s",