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Blame SOURCES/0046-v2v-vddk-Check-if-nbdkit-supports-selinux-label-befo.patch

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From bf7dba21337b2671f877f4e37e5eb031b26fc6e2 Mon Sep 17 00:00:00 2001
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From: "Richard W.M. Jones" <rjones@redhat.com>
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Date: Tue, 17 Oct 2017 10:43:30 +0100
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Subject: [PATCH] v2v: vddk: Check if nbdkit supports --selinux-label before
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 using.
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Give a better error message if not.
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Thanks: Ming Xie.
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(cherry picked from commit 59b4c4779f7dac645c794393d91c46467afab91c)
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---
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 v2v/input_libvirt_vddk.ml | 16 ++++++++++++++++
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 1 file changed, 16 insertions(+)
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diff --git a/v2v/input_libvirt_vddk.ml b/v2v/input_libvirt_vddk.ml
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index b322a9c49..f0b150efa 100644
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--- a/v2v/input_libvirt_vddk.ml
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+++ b/v2v/input_libvirt_vddk.ml
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@@ -101,6 +101,20 @@ See also \"INPUT FROM VDDK\" in the virt-v2v(1) manual.") library_path
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       error (f_"You must pass the ‘--vddk-thumbprint’ option with the SSL thumbprint of the VMware server.  To find the thumbprint, see the nbdkit-vddk-plugin(1) manual.  See also \"INPUT FROM VDDK\" in the virt-v2v(1) manual.")
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   in
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+  (* Check that nbdkit was compiled with SELinux support (for the
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+   * --selinux-label option).
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+   *)
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+  let error_unless_nbdkit_compiled_with_selinux () =
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+    let lines = external_command "nbdkit --dump-config" in
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+    (* In nbdkit <= 1.1.15 the selinux attribute was not present
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+     * at all in --dump-config output so there was no way to tell.
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+     * Ignore this case because there will be an error later when
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+     * we try to use the --selinux-label parameter.
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+     *)
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+    if List.mem "selinux=no" (List.map String.trim lines) then
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+      error (f_"nbdkit was compiled without SELinux support.  You will have to recompile nbdkit with libselinux-devel installed, or else set SELinux to Permissive mode while doing the conversion.")
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+  in
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+
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   (* List of passthrough parameters. *)
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   let vddk_passthrus =
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     [ "config",      (fun { vddk_config }      -> vddk_config);
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@@ -135,6 +149,8 @@ object
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     error_unless_nbdkit_working ();
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     error_unless_nbdkit_vddk_working ();
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     error_unless_thumbprint ();
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+    if have_selinux then
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+      error_unless_nbdkit_compiled_with_selinux ();
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     (* Get the libvirt XML.  This also checks (as a side-effect)
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      * that the domain is not running.  (RHBZ#1138586)
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-- 
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2.14.3
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