set-up-crypt-info-on-opendir

   1 ext4 crypto: make sure the encryption info is initialized on opendir(2)
   2
   3 Signed-off-by: Theodore Ts'o <tytso@mit.edu>
   4 ---
   5  fs/ext4/dir.c | 8 ++++++++
   6  1 file changed, 8 insertions(+)
   7
   8 diff --git a/fs/ext4/dir.c b/fs/ext4/dir.c
   9 index e11e6ae..f9e1491 100644
  10 --- a/fs/ext4/dir.c
  11 +++ b/fs/ext4/dir.c
  12 @@ -593,6 +593,13 @@ finished:
  13         return 0;
  14  }
  15
  16 +static int ext4_dir_open(struct inode * inode, struct file * filp)
  17 +{
  18 +       if (ext4_encrypted_inode(inode))
  19 +               return ext4_get_encryption_info(inode) ? -EACCES : 0;
  20 +       return 0;
  21 +}
  22 +
  23  static int ext4_release_dir(struct inode *inode, struct file *filp)
  24  {
  25         if (filp->private_data)
  26 @@ -635,5 +642,6 @@ const struct file_operations ext4_dir_operations = {
  27         .compat_ioctl   = ext4_compat_ioctl,
  28  #endif
  29         .fsync          = ext4_sync_file,
  30 +       .open           = ext4_dir_open,
  31         .release        = ext4_release_dir,
  32  };