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From 727b779b866e11834d1d0414d677b29702cadbfa Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= <berrange@redhat.com>
Date: Mon, 3 Jul 2023 10:21:07 +0100
Subject: [PATCH] core: set SYSTEMD_CONFIDENTIAL_VIRTUALIZATION env for
generators
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
This reports the confidential virtualization type that was detected
Related: https://github.com/systemd/systemd/issues/27604
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
(cherry picked from commit 0895124572c5a035d45f08cfbcdc0cdd61cead4c)
Related: RHEL-50651
---
man/systemd.generator.xml | 12 ++++++++++++
src/core/manager.c | 11 +++++++++++
2 files changed, 23 insertions(+)
diff --git a/man/systemd.generator.xml b/man/systemd.generator.xml
index 19ec586fa0..b3f19296f9 100644
--- a/man/systemd.generator.xml
+++ b/man/systemd.generator.xml
@@ -185,6 +185,18 @@
<varname>ConditionArchitecture=</varname> in
<citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>.</para></listitem>
</varlistentry>
+
+ <varlistentry>
+ <term><varname>$SYSTEMD_CONFIDENTIAL_VIRTUALIZATION</varname></term>
+
+ <listitem><para>If the service manager is run in a confidential virtualized environment,
+ <varname>$SYSTEMD_CONFIDENTIAL_VIRTUALIZATION</varname> is set to a string that identifies
+ the confidential virtualization hardware technology. If no confidential virtualization is
+ detected this variable will not be set. This data is identical to what
+ <citerefentry><refentrytitle>systemd-detect-virt</refentrytitle><manvolnum>1</manvolnum></citerefentry>
+ detects and reports, and uses the same vocabulary of confidential virtualization
+ technology identifiers.</para></listitem>
+ </varlistentry>
</variablelist>
</refsect1>
diff --git a/src/core/manager.c b/src/core/manager.c
index b44c7785cf..daeaa641d7 100644
--- a/src/core/manager.c
+++ b/src/core/manager.c
@@ -30,6 +30,7 @@
#include "bus-util.h"
#include "clean-ipc.h"
#include "clock-util.h"
+#include "confidential-virt.h"
#include "core-varlink.h"
#include "creds-util.h"
#include "dbus-job.h"
@@ -3706,6 +3707,7 @@ static int manager_run_environment_generators(Manager *m) {
static int build_generator_environment(Manager *m, char ***ret) {
_cleanup_strv_free_ char **nl = NULL;
Virtualization v;
+ ConfidentialVirtualization cv;
int r;
assert(m);
@@ -3754,6 +3756,15 @@ static int build_generator_environment(Manager *m, char ***ret) {
return r;
}
+ cv = detect_confidential_virtualization();
+ if (cv < 0)
+ log_debug_errno(cv, "Failed to detect confidential virtualization, ignoring: %m");
+ else if (cv > 0) {
+ r = strv_env_assign(&nl, "SYSTEMD_CONFIDENTIAL_VIRTUALIZATION", confidential_virtualization_to_string(cv));
+ if (r < 0)
+ return r;
+ }
+
r = strv_env_assign(&nl, "SYSTEMD_ARCHITECTURE", architecture_to_string(uname_architecture()));
if (r < 0)
return r;