[monojob] Add timeout parameter to monojob_wait()

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

src/core/monojob.c

  * Wait for single foreground job to complete
  *
  * @v string		Job description to display, or NULL to be silent
+ * @v timeout		Timeout period, in ticks (0=indefinite)
  * @ret rc		Job final status code
  */
-int monojob_wait ( const char *string ) {
+int monojob_wait ( const char *string, unsigned long timeout ) {
 	struct job_progress progress;
-	int key;
-	int rc;
+	unsigned long start;
 	unsigned long last_keycheck;
 	unsigned long last_progress;
 	unsigned long now;
 	unsigned long total;
 	unsigned int percentage;
 	int shown_percentage = 0;
+	int key;
+	int rc;
 
 	if ( string )
 		printf ( "%s...", string );
 	monojob_rc = -EINPROGRESS;
-	last_keycheck = last_progress = currticks();
+	last_keycheck = last_progress = start = currticks();
 	while ( monojob_rc == -EINPROGRESS ) {
 
 		/* Allow job to progress */
 		/* Check for keypresses.  This can be time-consuming,
 		 * so check only once per clock tick.
 		 */
-		if ( now != last_keycheck ) {
+		elapsed = ( now - last_keycheck );
+		if ( elapsed ) {
 			if ( iskey() ) {
 				key = getchar();
-				switch ( key ) {
-				case CTRL_C:
-					monojob_close ( &monojob, -ECANCELED );
-					break;
-				default:
+				if ( key == CTRL_C ) {
+					monojob_rc = -ECANCELED;
 					break;
 				}
 			}
 			last_keycheck = now;
 		}
 
+		/* Check for timeout, if applicable */
+		elapsed = ( now - start );
+		if ( timeout && ( elapsed >= timeout ) ) {
+			monojob_rc = -ETIMEDOUT;
+			break;
+		}
+
 		/* Display progress, if applicable */
 		elapsed = ( now - last_progress );
 		if ( string && ( elapsed >= TICKS_PER_SEC ) ) {
 		}
 	}
 	rc = monojob_rc;
+	monojob_close ( &monojob, rc );
 
 	if ( shown_percentage )
 		printf ( "\b\b\b\b    \b\b\b\b" );

src/include/ipxe/monojob.h

 
 extern struct interface monojob;
 
-extern int monojob_wait ( const char *string );
+extern int monojob_wait ( const char *string, unsigned long timeout );
 
 #endif /* _IPXE_MONOJOB_H */

src/usr/dhcpmgmt.c

 	printf ( "DHCP (%s %s)", netdev->name,
 		 netdev->ll_protocol->ntoa ( netdev->ll_addr ) );
 	if ( ( rc = start_dhcp ( &monojob, netdev ) ) == 0 )
-		rc = monojob_wait ( "" );
+		rc = monojob_wait ( "", 0 );
 
 	return rc;
 }
 	/* Perform PXE Boot Server Discovery */
 	printf ( "PXEBS (%s type %d)", netdev->name, pxe_type );
 	if ( ( rc = start_pxebs ( &monojob, netdev, pxe_type ) ) == 0 )
-		rc = monojob_wait ( "" );
+		rc = monojob_wait ( "", 0 );
 
 	return rc;
 }

src/usr/fcmgmt.c

 	}
 
 	/* Wait for ELS to complete */
-	return monojob_wait ( "" );
+	return monojob_wait ( "", 0 );
 }

src/usr/imgmgmt.c

 	}
 
 	/* Wait for download to complete */
-	if ( ( rc = monojob_wait ( uri_string_redacted ) ) != 0 )
+	if ( ( rc = monojob_wait ( uri_string_redacted, 0 ) ) != 0 )
 		goto err_monojob_wait;
 
 	/* Register image */

src/usr/imgtrust.c

 	list_for_each_entry ( info, &sig->info, list ) {
 		if ( ( rc = create_validator ( &monojob, info->chain ) ) != 0 )
 			goto err_create_validator;
-		if ( ( rc = monojob_wait ( NULL ) ) != 0 )
+		if ( ( rc = monojob_wait ( NULL, 0 ) ) != 0 )
 			goto err_validator_wait;
 	}
 

src/usr/nslookup.c

 
 	/* Perform name resolution */
 	if ( ( rc = resolv_setting ( &monojob, name, setting_name ) ) == 0 )
-		rc = monojob_wait ( NULL );
+		rc = monojob_wait ( NULL, 0 );
 	if ( rc != 0 ) {
 		printf ( "Could not resolve %s: %s\n", name, strerror ( rc ) );
 		return rc;

src/usr/pingmgmt.c

 	}
 
 	/* Wait for ping to complete */
-	if ( ( rc = monojob_wait ( NULL ) ) != 0 ) {
+	if ( ( rc = monojob_wait ( NULL, 0 ) ) != 0 ) {
 		printf ( "Finished: %s\n", strerror ( rc ) );
 		return rc;
 	}