From 7fed96b80c3e81ad73539c90310ab94166ff0229 Mon Sep 17 00:00:00 2001
From: Geoff Levand <geoff@infradead.org>
Date: Mon, 26 Mar 2012 20:18:32 -0700
Subject: [PATCH] pb-discover: Ignore ram, loop and no-name devices

Signed-off-by: Geoff Levand <geoff@infradead.org>
---
 discover/device-handler.c |  6 +-----
 discover/udev.c           | 22 +++++++++++++++++-----
 2 files changed, 18 insertions(+), 10 deletions(-)

diff --git a/discover/device-handler.c b/discover/device-handler.c
index 0783181..12bc40f 100644
--- a/discover/device-handler.c
+++ b/discover/device-handler.c
@@ -294,11 +294,7 @@ static int handle_add_udev_event(struct device_handler *handler,
 	ctx->id = talloc_strdup(ctx, event->device);
 
 	devname = event_get_param(ctx->event, "DEVNAME");
-	if (!devname) {
-		pb_log("no devname for %s?\n", event->device);
-		return 0;
-	}
-
+	assert(devname);
 	ctx->device_path = talloc_strdup(ctx, devname);
 
 	rc = mount_device(ctx);
diff --git a/discover/udev.c b/discover/udev.c
index bd7c6bd..a5d9e03 100644
--- a/discover/udev.c
+++ b/discover/udev.c
@@ -1,17 +1,18 @@
 
 #define _GNU_SOURCE
 
-#include <stdlib.h>
+#include <errno.h>
 #include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
 #include <unistd.h>
-#include <errno.h>
-#include <sys/types.h>
 #include <sys/socket.h>
+#include <sys/types.h>
 #include <sys/un.h>
 
+#include <log/log.h>
 #include <talloc/talloc.h>
 #include <waiter/waiter.h>
-#include <log/log.h>
 
 #include "event.h"
 #include "udev.h"
@@ -54,6 +55,7 @@ static void udev_handle_message(struct udev *udev, char *buf, int len)
 {
 	int result;
 	struct event *event;
+	const char *devpath;
 
 	event = talloc(udev, struct event);
 	event->type = EVENT_TYPE_UDEV;
@@ -66,7 +68,17 @@ static void udev_handle_message(struct udev *udev, char *buf, int len)
 		return;
 
 	udev_print_event(event);
-	device_handler_event(udev->handler, event);
+
+	/* Ignore ram, loop, and devices with no DEVNAME. */
+
+	devpath = event_get_param(event, "DEVPATH");
+
+	if (event_get_param(event, "DEVNAME")
+		&& !strstr(devpath, "virtual/block/loop")
+		&& !strstr(devpath, "virtual/block/ram")) {
+		device_handler_event(udev->handler, event);
+	}
+
 	talloc_free(event);
 
 	return;
-- 
2.39.2