cifs: store password in tcon

cifs: store password in tcon

Each tcon has its own password for share-level security. Store it in
the tcon and wipe it clean and free it when freeing the tcon. When
doing the tree connect with share-level security, use the tcon password
instead of the session password.

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

1 files changed, 4 insertions, 0 deletions

diff --git a/fs/cifs/misc.c b/fs/cifs/misc.c
index 7c3f4b9230d7..a0513605d7e3 100644
--- a/fs/cifs/misc.c
+++ b/fs/cifs/misc.c
@@ -132,6 +132,10 @@ tconInfoFree(struct cifsTconInfo *buf_to_free)
         }
         atomic_dec(&tconInfoAllocCount);
         kfree(buf_to_free->nativeFileSystem);
+        if (buf_to_free->password) {
+                memset(buf_to_free->password, 0, strlen(buf_to_free->password));
+                kfree(buf_to_free->password);
+        }
         kfree(buf_to_free);
 }