[test] Allow self-tests to report exit status when running under Linux

Allow the return status from an embedded image to propagate out to the
eventual return status from main().  When running under Linux, this
allows the pass/fail result of unit tests to be observable without
having to visually inspect the console output.

Signed-off-by: Michael Brown <mcb30@ipxe.org>

1 files changed, 11 insertions, 7 deletions

diff --git a/src/usr/autoboot.c b/src/usr/autoboot.c
index ccafeae7c..6dbe25ca4 100644
--- a/src/usr/autoboot.c
+++ b/src/usr/autoboot.c
@@ -542,11 +542,13 @@ static int shell_banner ( void ) {
  * Main iPXE flow of execution
  *
  * @v netdev		Network device, or NULL
+ * @ret rc		Return status code
  */
-void ipxe ( struct net_device *netdev ) {
+int ipxe ( struct net_device *netdev ) {
 	struct feature *feature;
 	struct image *image;
 	char *scriptlet;
+	int rc;
 
 	/*
 	 * Print welcome banner
@@ -570,28 +572,30 @@ void ipxe ( struct net_device *netdev ) {
 	/* Boot system */
 	if ( ( image = first_image() ) != NULL ) {
 		/* We have an embedded image; execute it */
-		image_exec ( image );
+		return image_exec ( image );
 	} else if ( shell_banner() ) {
 		/* User wants shell; just give them a shell */
-		shell();
+		return shell();
 	} else {
 		fetch_string_setting_copy ( NULL, &scriptlet_setting,
 					    &scriptlet );
 		if ( scriptlet ) {
 			/* User has defined a scriptlet; execute it */
-			system ( scriptlet );
+			rc = system ( scriptlet );
 			free ( scriptlet );
+			return rc;
 		} else {
 			/* Try booting.  If booting fails, offer the
 			 * user another chance to enter the shell.
 			 */
 			if ( netdev ) {
-				netboot ( netdev );
+				rc = netboot ( netdev );
 			} else {
-				autoboot();
+				rc = autoboot();
 			}
 			if ( shell_banner() )
-				shell();
+				rc = shell();
+			return rc;
 		}
 	}
 }