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security policy appended to container's environment variables #1219

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Nov 11, 2021
Merged

security policy appended to container's environment variables #1219

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eb3e6a0
security policy appended to environment variables so that containers …
Nov 5, 2021
5bbe7f5
policyEnforcer casting part of the if statement
Nov 11, 2021
3751f07
re[hrase comment on the security policy environment variable
Nov 11, 2021
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15 changes: 15 additions & 0 deletions internal/guest/runtime/hcsv2/uvm.go
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Original file line number Diff line number Diff line change
Expand Up @@ -209,6 +209,21 @@ func (h *Host) CreateContainer(ctx context.Context, id string, settings *prot.VM
}()
}

// Export security policy as one of the process's environment variables so that application and sidecar
// containers can have access to it. security policy is required by attestation containers which need to
// verify the attestation report feched from the PSP and extract init-time attestation claims found in
// the security policy. In doing so, an attestation container needs to confirm that the hash digest of
// the report's host_data attribute matches the hash digest of the security policy.
//
// We append the variable after the security policy enforcing logic completes so as to bypass it; the
// security policy variable cannot be included in the security policy as its value is not available
// security policy construction time.
policyEnforcer, ok := (h.securityPolicyEnforcer).(*securitypolicy.StandardSecurityPolicyEnforcer)
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if ok {
secPolicyEnv := fmt.Sprintf("SECURITY_POLICY=%s", policyEnforcer.EncodedSecurityPolicy)
settings.OCISpecification.Process.Env = append(settings.OCISpecification.Process.Env, secPolicyEnv)
}

// Create the BundlePath
if err := os.MkdirAll(settings.OCIBundlePath, 0700); err != nil {
return nil, errors.Wrapf(err, "failed to create OCIBundlePath: '%s'", settings.OCIBundlePath)
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