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Groups > comp.lang.python > #18295

Re: Can't write to a directory made w/ os.makedirs

Date 2012-01-01 15:05 +0000
From Tim Golden <mail@timgolden.me.uk>
Subject Re: Can't write to a directory made w/ os.makedirs
References <50693cc2-93c9-481d-9fb1-42312e69b2d9@c42g2000prb.googlegroups.com> <mailman.4289.1325410678.27778.python-list@python.org> <91830ffb-00d9-4fd1-b771-ad59374334ec@n22g2000prh.googlegroups.com>
Newsgroups comp.lang.python
Message-ID <mailman.4292.1325430363.27778.python-list@python.org> (permalink)

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On 01/01/2012 12:05, David Goldsmith wrote:
 >> ie can the Python process creating the directories,
 >
 > Yes.
 >
 >> and a subprocess called from it create a simple file?
 >
 > No.
 >
 >> Depending on where you are in the filesystem, it may indeed
 >> be necessary to be running as administrator. But don't try
 >> to crack every security nut with an elevated sledgehammer.
 >
 > If you mean running as admin., those were my sentiments exactly.  So,
 > there isn't something specific I should be doing to assure that my
 > subproceses can write to directories?


In the general case, no. By default, a subprocess will have
the same security context as its parent. The exception is
where the parent (the Python processing invoking subprocess.call
in this example) is already impersonating a different user;
in that case, the subprocess will inherit its grandparent's
context.

But unless you're doing something very deliberate here then
I doubt if that's biting you.

Can I ask: are you absolutely certain that the processes
you're calling are doing what you think they are and failing
where you think they're failing?

TJG

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Thread

[Windows 7, Python 2.6] Can't write to a directory made w/ os.makedirs OlyDLG <d.l.goldsmith@gmail.com> - 2011-12-31 14:13 -0800
  Re: [Windows 7, Python 2.6] Can't write to a directory made w/ os.makedirs Tim Golden <mail@timgolden.me.uk> - 2012-01-01 09:37 +0000
    Re: Can't write to a directory made w/ os.makedirs David Goldsmith <eulergaussriemann@gmail.com> - 2012-01-01 04:05 -0800
      Re: Can't write to a directory made w/ os.makedirs Tim Golden <mail@timgolden.me.uk> - 2012-01-01 15:05 +0000
        Re: Can't write to a directory made w/ os.makedirs David Goldsmith <eulergaussriemann@gmail.com> - 2012-01-01 19:14 -0800
          Re: Can't write to a directory made w/ os.makedirs MRAB <python@mrabarnett.plus.com> - 2012-01-02 03:43 +0000
            Re: Can't write to a directory made w/ os.makedirs David Goldsmith <eulergaussriemann@gmail.com> - 2012-01-03 07:17 -0800
          Re: Can't write to a directory made w/ os.makedirs Tim Golden <mail@timgolden.me.uk> - 2012-01-02 11:11 +0000
          Re: Can't write to a directory made w/ os.makedirs Dave Angel <d@davea.name> - 2012-01-02 09:09 -0500
            Re: Can't write to a directory made w/ os.makedirs David Goldsmith <eulergaussriemann@gmail.com> - 2012-01-02 18:34 -0800

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