[libvirt] [PATCH] Improve security driver error message

[Sebastian Mitterle]

Currently, when security driver is not available users are informed that
it wasn't found which can be confusing.
1. Update error message
2. Add comment to domain doc

Signed-off-by Sebastian Mitterle <smitterl at redhat.com>
---
 docs/formatdomain.html.in       | 3 ++-
 src/security/security_manager.c | 2 +-
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/docs/formatdomain.html.in b/docs/formatdomain.html.in
index dd04a05f09..3040448df1 100644
--- a/docs/formatdomain.html.in
+++ b/docs/formatdomain.html.in
@@ -9011,7 +9011,8 @@ qemu-kvm -net nic,model=? /dev/null
       </dd>
       <dt><code>model</code></dt>
       <dd>A valid security model name, matching the currently
-        activated security model
+      activated security model. Model <code>dac</code> is not available
+      when guest is run by unprivileged user.
       </dd>
       <dt><code>relabel</code></dt>
       <dd>Either <code>yes</code> or <code>no</code>. This must always
diff --git a/src/security/security_manager.c b/src/security/security_manager.c
index 952675381d..f229d94570 100644
--- a/src/security/security_manager.c
+++ b/src/security/security_manager.c
@@ -769,7 +769,7 @@ static int virSecurityManagerCheckModel(virSecurityManagerPtr mgr,
     }
 
     virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
-                   _("Unable to find security driver for model %s"),
+                   _("Security driver model '%s' is not available"),
                    secmodel);
  cleanup:
     VIR_FREE(sec_managers);
-- 
2.21.0