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Re: slashes in filenames [was Re: Error while trying to install openssh-server on Buster]

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On Thu, Jul 23, 2020 at 07:16:06PM -0400, The Wanderer wrote:
> On 2020-07-23 at 06:26, Andrei POPESCU wrote:
> > Seriously? Could you please show me how would I create a file on *nix
> > containing '/' in the name?
> 
> It's theoretically possible, but AFAIK basically nothing would support
> it or work properly with it.
> 
> The only ways I can think of to do it that I wouldn't expect to be
> prohibited by the intermediary layers involved (such as the C standard
> library) would be A: direct file I/O not involving a library (which I'd
> guess would probably need to be written in architecture-specific ASM),
> and B: opening the device underlying the filesystem in a hex editor or
> similar and modifying the stored data in the inode.

The main way that one gets a filename containing a '/' character in
real life is by discovering a bug somewhere.

I've personally seen it once, on an old HP-UX system that was acting
as an NFS server for some Mac clients (long before Mac OS X).  Apparently
the NFS server allowed the clients to create filenames with slashes in
them, since that's legal on Mac OS 9 and earlier.  Once such a file was
created on the server, you couldn't do *anything* to it.  You couldn't
delete it, or rename it, or open it.  The only thing you could do was
move out all of the other files in the same directory, then rename the
directory that it's in to something like "xxx_radioactive_waste".  Then
recreate the original directory, and move all the other files back into
it.

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Error while trying to install openssh-server on Buster rhkramer <rhkramer.s32@gmail.com> - 2020-07-22 04:10 +0200
  Re: Error while trying to install openssh-server on Buster Andrew Cater <amacater@gmail.com> - 2020-07-22 13:10 +0200
    Resolved (without understanding ;-) (was: Re: Error while trying to install openssh-server on Buster) rhkramer <rhkramer.s32@gmail.com> - 2020-07-22 20:40 +0200
      Re: Resolved (without understanding ;-) (was: Re: Error while trying  to install openssh-server on Buster) Greg Wooledge <wooledg@eeg.ccf.org> - 2020-07-22 21:00 +0200
        Re: Resolved (without understanding ;-) (was: Re: Error while trying to install openssh-server on Buster) rhkramer@gmail.com - 2020-07-22 22:30 +0200
      Re: Resolved (without understanding ; -) (was: Re: Error while trying  to install openssh-server on Buster) David Wright <deblis@lionunicorn.co.uk> - 2020-07-22 21:30 +0200
        Re: Resolved (without understanding ; -) (was: Re: Error while  trying to install openssh-server on Buster) <tomas@tuxteam.de> - 2020-07-23 10:20 +0200
          Re: Resolved (without understanding ; -) (was: Re: Error while  trying to install openssh-server on Buster) David Wright <deblis@lionunicorn.co.uk> - 2020-07-24 01:50 +0200
            Re: Resolved (without understanding ; -) (was: Re: Error while  trying to install openssh-server on Buster) <tomas@tuxteam.de> - 2020-07-24 11:00 +0200
              Re: Resolved (without understanding ; -) (was: Re: Error while  trying to install openssh-server on Buster) Andrei POPESCU <andreimpopescu@gmail.com> - 2020-07-24 11:10 +0200
                Antipatterns and Handcuffs [was: Re: Resolved (without understanding  ...] <tomas@tuxteam.de> - 2020-07-24 11:30 +0200
  Re: Error while trying to install openssh-server on Buster Greg Wooledge <wooledg@eeg.ccf.org> - 2020-07-22 13:40 +0200
    Re: Error while trying to install openssh-server on Buster Jonathan Dowland <jon+debian-user@dow.land> - 2020-07-22 17:30 +0200
      Re: Error while trying to install openssh-server on Buster Andrei POPESCU <andreimpopescu@gmail.com> - 2020-07-23 12:30 +0200
        slashes in filenames [was Re: Error while trying to install openssh-server  on Buster] The Wanderer <wanderer@fastmail.fm> - 2020-07-24 01:20 +0200
          Re: slashes in filenames [was Re: Error while trying to install openssh-server on Buster] Stefan Monnier <monnier@iro.umontreal.ca> - 2020-07-24 01:30 +0200
          Re: slashes in filenames [was Re: Error while trying to install  openssh-server on Buster] Greg Wooledge <wooledg@eeg.ccf.org> - 2020-07-24 13:50 +0200
            Re: slashes in filenames [was Re: Error while trying to install  openssh-server on Buster] Greg Wooledge <wooledg@eeg.ccf.org> - 2020-07-24 14:00 +0200
              Re: slashes in filenames [was Re: Error while trying to install  openssh-server on Buster] <tomas@tuxteam.de> - 2020-07-24 15:30 +0200
                Re: slashes in filenames [was Re: Error while trying to install openssh-server  on Buster] The Wanderer <wanderer@fastmail.fm> - 2020-07-24 15:50 +0200
                Re: slashes in filenames [was Re: Error while trying to install openssh-server  on Buster] The Wanderer <wanderer@fastmail.fm> - 2020-07-24 16:00 +0200
                Re: slashes in filenames [was Re: Error while trying to install  openssh-server on Buster] <tomas@tuxteam.de> - 2020-07-24 16:10 +0200
                Re: slashes in filenames [was Re: Error while trying to install  openssh-server on Buster] <tomas@tuxteam.de> - 2020-07-24 16:00 +0200
                Re: slashes in filenames [was Re: Error while trying to install  openssh-server on Buster] Michael Stone <mstone@debian.org> - 2020-07-24 16:00 +0200
                Re: slashes in filenames [was Re: Error while trying to install  openssh-server on Buster] Greg Wooledge <wooledg@eeg.ccf.org> - 2020-07-24 16:00 +0200
                Re: slashes in filenames [was Re: Error while trying to install  openssh-server on Buster] <tomas@tuxteam.de> - 2020-07-24 16:10 +0200
            Re: slashes in filenames [was Re: Error while trying to install openssh-server  on Buster] The Wanderer <wanderer@fastmail.fm> - 2020-07-24 14:00 +0200
        Re: Error while trying to install openssh-server on Buster Jonathan Dowland <jon+debian-user@dow.land> - 2020-07-24 16:10 +0200
          Re: Error while trying to install openssh-server on Buster Andrei POPESCU <andreimpopescu@gmail.com> - 2020-07-24 16:20 +0200
            Re: Error while trying to install openssh-server on Buster <tomas@tuxteam.de> - 2020-07-24 18:00 +0200
              Re: Error while trying to install openssh-server on Buster Andrei POPESCU <andreimpopescu@gmail.com> - 2020-07-24 20:50 +0200
                Re: Error while trying to install openssh-server on Buster Greg Wooledge <wooledg@eeg.ccf.org> - 2020-07-24 21:20 +0200
                Re: Error while trying to install openssh-server on Buster <tomas@tuxteam.de> - 2020-07-25 11:40 +0200
    Re: Error while trying to install openssh-server on Buster Anssi Saari <as@sci.fi> - 2020-07-22 20:50 +0200

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