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Re: Why can't I move the document root for a site in Apache 2? [SOLVED]

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On Tue, Sep 01, 2020 at 11:02:18PM +1000, elvis wrote:
> 
> On 1/9/20 6:29 pm, tomas@tuxteam.de wrote:
> >On Mon, Aug 31, 2020 at 04:57:28PM -0400, Gary Dale wrote:
> >
> >[...]
> >
> >>Just to be clear, the folder I had to change permissions on is the
> >><folder containing all the web sites. This is many levels above the
> >>document root,
> >To be able to access a file given its path, you need to have read
> >access to each directory [1] along that path. There isn't another
> >way, and this is a Good Thing [TM]
> 
> I don't know if this is a silly question or not, but can you access
> a file not given its path?

Yes, you can :-)

See openat(2).

In a nutshell, someone else resolves the path up to the (more or
less [1]) last directory, gives you an open file descriptor for
that and you pick up from there. Of course, the program has to
be written with that in mind.

> I have the same problem as the OP sometimes and wonder what rules
> there are for allowing access to directories further along the path.

That depends on context, program, etc. But if you give the program
an absolute path, every directory from the root down to the file
has to be readable for your program.

Usually this is what you want: you can close off a whole subtree
of your file system -- imagine Gandalf standing there and yelling
"Thou Shalt Not Pass!" or something.

Cheers

[1] Well, more or less. Not necessarily the last -- any midpoint
   along the path is fair game.

 - t

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Thread

Why can't I move the document root for a site in Apache 2? Gary Dale <gary@extremeground.com> - 2020-08-30 18:30 +0200
  Re: Why can't I move the document root for a site in Apache 2? john doe <johndoe65534@mail.com> - 2020-08-30 19:10 +0200
    Re: Why can't I move the document root for a site in Apache 2? john doe <johndoe65534@mail.com> - 2020-08-30 19:30 +0200
      Re: Why can't I move the document root for a site in Apache 2? Gary Dale <gary@extremeground.com> - 2020-08-31 21:20 +0200
        Re: Why can't I move the document root for a site in Apache 2?  [SOLVED] Gary Dale <gary@extremeground.com> - 2020-08-31 22:10 +0200
          Re: Why can't I move the document root for a site in Apache 2?  [SOLVED] Gary Dale <gary@extremeground.com> - 2020-08-31 23:00 +0200
            Re: Why can't I move the document root for a site in Apache 2?  [SOLVED] mick crane <mick.crane@gmail.com> - 2020-09-01 07:50 +0200
            Re: Why can't I move the document root for a site in Apache 2?  [SOLVED] <tomas@tuxteam.de> - 2020-09-01 10:40 +0200
              folders (was Re: Why can't I move the document root for a site in  Apache 2? [SOLVED]) The Wanderer <wanderer@fastmail.fm> - 2020-09-01 12:50 +0200
                Re: folders (was Re: Why can't I move the document root for a site  in Apache 2? [SOLVED]) <tomas@tuxteam.de> - 2020-09-01 16:00 +0200
                Re: folders (was Re: Why can't I move the document root for a site  in Apache 2? [SOLVED]) Andrei POPESCU <andreimpopescu@gmail.com> - 2020-09-02 11:50 +0200
                Re: folders (was Re: Why can't I move the document root for a site  in Apache 2? [SOLVED]) <tomas@tuxteam.de> - 2020-09-02 12:00 +0200
                Re: folders (was Re: Why can't I move the document root for a site  in Apache 2? [SOLVED]) Marek Mosiewicz <marek.mosiewicz@jotel.com.pl> - 2020-09-01 21:10 +0200
              Re: Why can't I move the document root for a site in Apache 2?  [SOLVED] Greg Wooledge <wooledg@eeg.ccf.org> - 2020-09-01 14:10 +0200
                Re: Why can't I move the document root for a site in Apache 2?  [SOLVED] Greg Wooledge <wooledg@eeg.ccf.org> - 2020-09-01 15:40 +0200
                Re: Why can't I move the document root for a site in Apache 2? [SOLVED] Kenneth Parker <sea7kenp@gmail.com> - 2020-09-01 16:10 +0200
                Re: Why can't I move the document root for a site in Apache 2? [SOLVED] Kenneth Parker <sea7kenp@gmail.com> - 2020-09-01 15:40 +0200
                Folders [was: Why can't I move the document root for a site in  Apache 2? [SOLVED]] <tomas@tuxteam.de> - 2020-09-01 16:00 +0200
              Re: Why can't I move the document root for a site in Apache 2?  [SOLVED] elvis <elvis@dogonfire.com> - 2020-09-01 15:10 +0200
                Re: Why can't I move the document root for a site in Apache 2?  [SOLVED] Dan Ritter <dsr@randomstring.org> - 2020-09-01 15:40 +0200
                Re: Why can't I move the document root for a site in Apache 2?  [SOLVED] <tomas@tuxteam.de> - 2020-09-01 16:10 +0200
                Re: Why can't I move the document root for a site in Apache 2?  [SOLVED] Greg Wooledge <wooledg@eeg.ccf.org> - 2020-09-01 16:40 +0200
                Re: Why can't I move the document root for a site in Apache 2?  [SOLVED] <tomas@tuxteam.de> - 2020-09-01 16:50 +0200
              Re: Why can't I move the document root for a site in Apache 2? [SOLVED] rhkramer@gmail.com - 2020-09-01 16:10 +0200
                Re: Why can't I move the document root for a site in Apache 2?  [SOLVED] <tomas@tuxteam.de> - 2020-09-01 16:20 +0200
                Re: Why can't I move the document root for a site in Apache 2?  [SOLVED] John Crawley <john@bunsenlabs.org> - 2020-09-02 02:30 +0200

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