This is a note to let you know that I've just added the patch titled
nfs: reject changes to resvport and sharecache during remount
to the 3.16-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
nfs-reject-changes-to-resvport-and-sharecache-during-remount.patch
and it can be found in the queue-3.16 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From 71a6ec8ac587418ceb6b420def1ca44b334c1ff7 Mon Sep 17 00:00:00 2001
From: Scott Mayhew <[email protected]>
Date: Mon, 4 Aug 2014 17:37:27 -0400
Subject: nfs: reject changes to resvport and sharecache during remount
From: Scott Mayhew <[email protected]>
commit 71a6ec8ac587418ceb6b420def1ca44b334c1ff7 upstream.
Commit c8e47028 made it possible to change resvport/noresvport and
sharecache/nosharecache via a remount operation, neither of which should be
allowed.
Signed-off-by: Scott Mayhew <[email protected]>
Fixes: c8e47028 (nfs: Apply NFS_MOUNT_CMP_FLAGMASK to nfs_compare_remount_data)
Signed-off-by: Trond Myklebust <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
fs/nfs/super.c | 9 +++++----
1 file changed, 5 insertions(+), 4 deletions(-)
--- a/fs/nfs/super.c
+++ b/fs/nfs/super.c
@@ -2180,7 +2180,7 @@ out_no_address:
return -EINVAL;
}
-#define NFS_MOUNT_CMP_FLAGMASK ~(NFS_MOUNT_INTR \
+#define NFS_REMOUNT_CMP_FLAGMASK ~(NFS_MOUNT_INTR \
| NFS_MOUNT_SECURE \
| NFS_MOUNT_TCP \
| NFS_MOUNT_VER3 \
@@ -2188,15 +2188,16 @@ out_no_address:
| NFS_MOUNT_NONLM \
| NFS_MOUNT_BROKEN_SUID \
| NFS_MOUNT_STRICTLOCK \
- | NFS_MOUNT_UNSHARED \
- | NFS_MOUNT_NORESVPORT \
| NFS_MOUNT_LEGACY_INTERFACE)
+#define NFS_MOUNT_CMP_FLAGMASK (NFS_REMOUNT_CMP_FLAGMASK & \
+ ~(NFS_MOUNT_UNSHARED | NFS_MOUNT_NORESVPORT))
+
static int
nfs_compare_remount_data(struct nfs_server *nfss,
struct nfs_parsed_mount_data *data)
{
- if ((data->flags ^ nfss->flags) & NFS_MOUNT_CMP_FLAGMASK ||
+ if ((data->flags ^ nfss->flags) & NFS_REMOUNT_CMP_FLAGMASK ||
data->rsize != nfss->rsize ||
data->wsize != nfss->wsize ||
data->version != nfss->nfs_client->rpc_ops->version ||
Patches currently in stable-queue which might be from [email protected] are
queue-3.16/nfs-reject-changes-to-resvport-and-sharecache-during-remount.patch
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