From: ldo@nz.invalid   
      
   On Sun, 8 Feb 2026 10:28:50 -0800, Mike Easter wrote:   
      
   > Someone said 'in linux everything is a directory'; but some   
   > 'directories' are more 'real' or conventional than others.   
   >   
   > This seems to be a case of an 'operational' directory.   
   >   
   > https://docs.kernel.org/filesystems/vfs.html   
   >> Overview of the Linux Virtual File System   
      
   This is a kernel-internal API, only of interest to those creating   
   kernel modules to support new filesystems, or otherwise working on   
   that low-level code.   
      
   There is a way to add new filesystem support without getting deeply   
   into the kernel .   
   This is how the NTFS-3g driver works, for example.   
      
   In terms of userland APIs, there is the *nix tradition of “everything   
   is a file” . To this, Linux adds   
   “everything is a file descriptor” (e.g.   
   ,   
   ),   
   and also “everything is a filesystem” (e.g.   
   ,   
   ).   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)