• Ian Kent's avatar
    autofs4: make autofs type usage explicit · a92daf6b
    Ian Kent authored
    - the type assigned at mount when no type is given is changed
      from 0 to AUTOFS_TYPE_INDIRECT. This was done because 0 and
      AUTOFS_TYPE_INDIRECT were being treated implicitly as the same
      type.
    
    - previously, an offset mount had it's type set to
      AUTOFS_TYPE_DIRECT|AUTOFS_TYPE_OFFSET but the mount control
      re-implementation needs to be able distinguish all three types.
      So this was changed to make the type setting explicit.
    
    - a type AUTOFS_TYPE_ANY was added for use by the re-implementation
      when checking if a given path is a mountpoint. It's not really a
      type as we use this to ask if a given path is a mountpoint in the
      autofs_dev_ioctl_ismountpoint() function.
    
    - functions to set and test the autofs mount types have been added to
      improve readability and make the type usage explicit.
    
    - the mount type is used from user space for the mount control
      re-implementtion so, for consistency, all the definitions have
      been moved to the user space include file include/linux/auto_fs4.h.
    Signed-off-by: default avatarIan Kent <raven@themaw.net>
    Signed-off-by: default avatarJeff Moyer <jmoyer@redhat.com>
    Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
    Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
    a92daf6b
dev-ioctl.c 20.3 KB