Re: [patch 07/24] fat: dont call notify_change

[Miklos Szeredi]

> > From: Miklos Szeredi <mszeredi@xxxxxxx>
> > 
> > The FAT_IOCTL_SET_ATTRIBUTES ioctl() calls notify_change() to change
> > the file mode before changing the inode attributes.  Replace with
> > explicit call to fat_setattr().
> > 
> > This is equivalent, except that security_inode_setattr() is not called
> > before fat_setattr().  I think this is not needed, since the mode
> > change is just a side effect of the attribute change.
> 
> Actually I think we want the security_inode_setattr.  This is an
> implicit chmode when switching the ATTR_RO flag on and off and we should
> have the full security check for it.

Yes, I'm a bit uncertain about this.  It's a user action that triggers
the mode change.  On the other hand it's just a side effect of the
ioctl.  I can re-add the security check just to be on the safe side,
but probably nobody cares.

Miklos
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