Windows Azure Environment.GetEnvironmentVariable("RoleRoot") read access denied error

I have an xml file that I ma tryin to read from

string xmlTemplatePath = Path.Combine(Environment.GetEnvironmentVariable("RoleRoot") + @"\", @"approot\myxml.xml");

Using XDocument doc = XDocument.Load(xml开发者_如何学编程TemplatePath), however I get an access denied exception both on the cloud and development environment. Any ideas why a read is denied?

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I know, old thread... but the answer could be useful to someone nevertheless.

It appears that an azure worker process runs under a custom user (shows up as a GUID in taskmgr). This user account appears to be quite restricted and has no read-access to the filesystem (even inside the approot directory).

My solution was to create a startup script for the azure role (see msdn article) which uses icacls to add permissions to access the files. In this case, I created a file called startup\Install.cmd in my project, containing the following:

@echo off

if "%EMULATED%"=="true" goto :EOF

echo Allowing access to files
cd directory_where_files_exist
icacls *.* /grant Everyone:F

In my ServiceDefinition.csdef file, I instruct the Azure deployment system to run this startup script during deployment by putting this inside the role definition (e.g. <WorkerRole>):

<Startup>
  <Task executionContext="elevated" commandLine="startup\Install.cmd">
    <Environment>
      <Variable name="EMULATED">
        <RoleInstanceValue xpath="/RoleEnvironment/Deployment/@emulated" />
      </Variable>
    </Environment>
  </Task>
</Startup>

The variable "EMULATED" is set when the emulator is running - note that in the startup/Install.cmd file above, I skip doing the permission change if running in the emulator.

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Looks fine to me. I even grabbed your code and dropped it into a worker role, calling it from OnStart(), after creating myxml.xml in my project root, just to make sure I wasn't missing something obvious.

Check myxml.xml properties: "Build Action" should be "Content" and "Copy to Output Directory" should be "Copy always" or "Copy if newer". If that doesn't fix it, check permissions on that file.