Allow petitboot to run udevtrigger on start

Add an option (-u) to run udevtrigger when petitboot is ready for
device discovery. Also add -h to explain what -u does.

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>

1 files changed, 7 insertions, 1 deletions

diff --git a/devices.c b/devices.c
index 43a388d..4936f9a 100644
--- a/devices.c
+++ b/devices.c
@@ -238,7 +238,7 @@ static twin_bool_t pboot_proc_server_sock(int sock, twin_file_op_t ops,
 	return TWIN_TRUE;
 }
 
-int pboot_start_device_discovery(void)
+int pboot_start_device_discovery(int udev_trigger)
 {
 	int sock;
 	struct sockaddr_un addr;
@@ -269,6 +269,12 @@ int pboot_start_device_discovery(void)
 
 	twin_set_file(pboot_proc_server_sock, sock, TWIN_READ, &_ctx);
 
+	if (udev_trigger) {
+		int rc = system("udevtrigger");
+		if (rc)
+			LOG("udevtrigger failed, rc %d\n", rc);
+	}
+
 	return TWIN_TRUE;
 }