[PATCH 05/12] tests/qtest/qos-test: add QTEST_DUMP_ENV environment variable

[Christian Schoenebeck <qemu_oss@crudebyte.com>]

If this new QTEST_DUMP_ENV is set, it will cause all environment
variables to be dumped to stdout.

Signed-off-by: Christian Schoenebeck <qemu_oss@crudebyte.com>
---
 tests/qtest/qos-test.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/tests/qtest/qos-test.c b/tests/qtest/qos-test.c
index db667e16da..4b1a1922fc 100644
--- a/tests/qtest/qos-test.c
+++ b/tests/qtest/qos-test.c
@@ -313,8 +313,15 @@ static void walk_path(QOSGraphNode *orig_path, int len)
  *   machine/drivers/test objects
  * - Cleans up everything
  */
-int main(int argc, char **argv)
+int main(int argc, char **argv, char** envp)
 {
+    if (getenv("QTEST_DUMP_ENV") != NULL) {
+        printf("ENVIRONMENT VARIABLES: {\n");
+        for (char **env = envp; *env != 0; env++) {
+            printf("\t%s\n", *env);
+        }
+        printf("}\n");
+    }
     g_test_init(&argc, &argv, NULL);
     qos_graph_init();
     module_call_init(MODULE_INIT_QOM);
-- 
2.20.1