[PATCH] discover/device-handler: Restore autoboot setting on requery

[Samuel Mendoza-Jonas]

When a device requery is triggered we cancel any default boot option on
the device. This also disables autoboot which we don't want; any boot
options found after the requery will not be able to autoboot.
To avoid this restore the existing autoboot setting after checking for
default options.

This prevents a particular corner case where a default boot option has
been selected for boot but one of its boot files has stalled or is
taking more time to download than the requery timeout and the requery
accidentally cancels autoboot preventing Petitboot from trying to boot
again.

Signed-off-by: Samuel Mendoza-Jonas <sam at mendozajonas.com>
---
 discover/device-handler.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/discover/device-handler.c b/discover/device-handler.c
index cf379e78..34437d66 100644
--- a/discover/device-handler.c
+++ b/discover/device-handler.c
@@ -1278,6 +1278,7 @@ static int device_handler_requery_timeout_fn(void *data)
 	struct requery_data *rqd = data;
 	struct device_handler *handler;
 	struct discover_device *device;
+	bool autoboot;
 
 	handler = rqd->handler;
 	device = rqd->device;
@@ -1300,6 +1301,11 @@ static int device_handler_requery_timeout_fn(void *data)
 		talloc_free(opt);
 	}
 
+	/* Track whether autoboot was enabled, if we cancel a default option
+	 * it will be switched off.
+	 */
+	autoboot = handler->autoboot_enabled;
+
 	list_for_each_entry_safe(&device->boot_options, opt, tmp, list) {
 		if (opt == handler->default_boot_option) {
 			pb_log("Default option %s cancelled since device is being requeried",
@@ -1310,6 +1316,8 @@ static int device_handler_requery_timeout_fn(void *data)
 		talloc_free(opt);
 	}
 
+	handler->autoboot_enabled = autoboot;
+
 	discover_server_notify_device_remove(handler->server, device->device);
 	device->notified = false;
 
-- 
2.18.0