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-rw-r--r--fs/nfs/proc.c28
1 files changed, 26 insertions, 2 deletions
diff --git a/fs/nfs/proc.c b/fs/nfs/proc.c
index 03599bfe81cf..4dbb84df1b68 100644
--- a/fs/nfs/proc.c
+++ b/fs/nfs/proc.c
@@ -129,6 +129,8 @@ nfs_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr,
sattr->ia_mode &= S_IALLUGO;
dprintk("NFS call setattr\n");
+ if (sattr->ia_valid & ATTR_FILE)
+ msg.rpc_cred = nfs_file_cred(sattr->ia_file);
nfs_fattr_init(fattr);
status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
if (status == 0)
@@ -598,6 +600,29 @@ nfs_proc_lock(struct file *filp, int cmd, struct file_lock *fl)
return nlmclnt_proc(NFS_SERVER(inode)->nlm_host, cmd, fl);
}
+/* Helper functions for NFS lock bounds checking */
+#define NFS_LOCK32_OFFSET_MAX ((__s32)0x7fffffffUL)
+static int nfs_lock_check_bounds(const struct file_lock *fl)
+{
+ __s32 start, end;
+
+ start = (__s32)fl->fl_start;
+ if ((loff_t)start != fl->fl_start)
+ goto out_einval;
+
+ if (fl->fl_end != OFFSET_MAX) {
+ end = (__s32)fl->fl_end;
+ if ((loff_t)end != fl->fl_end)
+ goto out_einval;
+ } else
+ end = NFS_LOCK32_OFFSET_MAX;
+
+ if (start < 0 || start > end)
+ goto out_einval;
+ return 0;
+out_einval:
+ return -EINVAL;
+}
const struct nfs_rpc_ops nfs_v2_clientops = {
.version = 2, /* protocol version */
@@ -630,7 +655,6 @@ const struct nfs_rpc_ops nfs_v2_clientops = {
.write_setup = nfs_proc_write_setup,
.write_done = nfs_write_done,
.commit_setup = nfs_proc_commit_setup,
- .file_open = nfs_open,
- .file_release = nfs_release,
.lock = nfs_proc_lock,
+ .lock_check_bounds = nfs_lock_check_bounds,
};