From: Kay Sievers <kay.sievers@vrfy.org>
Date: Thu, 23 Apr 2009 01:33:58 +0000 (+0200)
Subject: libudev: monitor - do not filter messages with wrong magic
X-Git-Tag: 174~1079
X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=commitdiff_plain;h=e93c38c3a2daaa2a8fedac59037f43a0403fdd03;ds=sidebyside

libudev: monitor - do not filter messages with wrong magic
---

diff --git a/udev/lib/libudev-monitor.c b/udev/lib/libudev-monitor.c
index d8b375c71..211aa12f6 100644
--- a/udev/lib/libudev-monitor.c
+++ b/udev/lib/libudev-monitor.c
@@ -241,8 +241,8 @@ static int filter_apply(struct udev_monitor *udev_monitor)
 	bpf_stmt(ins, &i, BPF_LD|BPF_W|BPF_ABS, offsetof(struct udev_monitor_netlink_header, magic));
 	/* jump if magic matches */
 	bpf_jmp(ins, &i, BPF_JMP|BPF_JEQ|BPF_K, UDEV_MONITOR_MAGIC, 1, 0);
-	/* wrong magic, drop packet */
-	bpf_stmt(ins, &i, BPF_RET|BPF_K, 0);
+	/* wrong magic, pass packet */
+	bpf_stmt(ins, &i, BPF_RET|BPF_K, 0xffffffff);
 
 	/* add all subsystem match values */
 	udev_list_entry_foreach(list_entry, udev_list_get_entry(&udev_monitor->filter_subsystem_list)) {