cifs: have find_readable/writable_file filter by fsuid

When we implement multiuser mounts, we'll need to filter filehandles
by fsuid. Add a flag for multiuser mounts and code to filter by
fsuid when it's set.

Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>

1 files changed, 3 insertions, 3 deletions

diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c
index a39a1c451733..df29a3a3d80c 100644
--- a/fs/cifs/inode.c
+++ b/fs/cifs/inode.c
@@ -963,7 +963,7 @@ cifs_set_file_info(struct inode *inode, struct iattr *attrs, int xid,
         /*
          * If the file is already open for write, just use that fileid
          */
-        open_file = find_writable_file(cifsInode);
+        open_file = find_writable_file(cifsInode, true);
         if (open_file) {
                 netfid = open_file->netfid;
                 netpid = open_file->pid;
@@ -1813,7 +1813,7 @@ cifs_set_file_size(struct inode *inode, struct iattr *attrs,
          * writebehind data than the SMB timeout for the SetPathInfo
          * request would allow
          */
-        open_file = find_writable_file(cifsInode);
+        open_file = find_writable_file(cifsInode, true);
         if (open_file) {
                 __u16 nfid = open_file->netfid;
                 __u32 npid = open_file->pid;
@@ -1978,7 +1978,7 @@ cifs_setattr_unix(struct dentry *direntry, struct iattr *attrs)
                 args->ctime = NO_CHANGE_64;
 
         args->device = 0;
-        open_file = find_writable_file(cifsInode);
+        open_file = find_writable_file(cifsInode, true);
         if (open_file) {
                 u16 nfid = open_file->netfid;
                 u32 npid = open_file->pid;