• Miklos Szeredi's avatar
    fuse: fix permission checking on sticky directories · ebc14c4d
    Miklos Szeredi authored
    The VFS checks sticky bits on the parent directory even if the filesystem
    defines it's own ->permission().  In some situations (sshfs, mountlo, etc) the
    user does have permission to delete a file even if the attribute based
    checking would not allow it.
    
    So work around this by storing the permission bits separately and returning
    them in stat(), but cutting the permission bits off from inode->i_mode.
    
    This is slightly hackish, but it's probably not worth it to add new
    infrastructure in VFS and a slight performance penalty for all filesystems,
    just for the sake of fuse.
    
    [Jan Engelhardt] cosmetic fixes
    Signed-off-by: default avatarMiklos Szeredi <mszeredi@suse.cz>
    Cc: Jan Engelhardt <jengelh@linux01.gwdg.de>
    Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
    Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
    ebc14c4d
inode.c 18.7 KB