From: Jo-Philipp Wich <jo@mein.io>
Date: Wed, 1 Apr 2020 16:19:30 +0000 (+0200)
Subject: luci-mod-status: luci-bwc: skip "." and ".." when finding netdevs
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=e5e71a55ab165584762ac262d4d799e4a5096c9a;p=oweals%2Fluci.git

luci-mod-status: luci-bwc: skip "." and ".." when finding netdevs

Skip the "." and ".." directory entries of "/sys/class/net/" instead of
passing them on to libiwinfo's probe function. This avoids a situation
where the kernel requests a modprobe of "netdev-." and "netdev-.." over
and over again, resulting in high load on lower end systems.

Signed-off-by: Jo-Philipp Wich <jo@mein.io>
(cherry picked from commit 16f0997bdbf85df0c7bae7f0773a118714d15cdf)
---

diff --git a/modules/luci-mod-status/src/luci-bwc.c b/modules/luci-mod-status/src/luci-bwc.c
index 9a57fa23a..6f7016ec9 100644
--- a/modules/luci-mod-status/src/luci-bwc.c
+++ b/modules/luci-mod-status/src/luci-bwc.c
@@ -492,12 +492,12 @@ static int run_daemon(void)
 		{
 			while ((e = readdir(dir)) != NULL)
 			{
+				if (!strcmp(e->d_name, "lo") || !strcmp(e->d_name, ".") || !strcmp(e->d_name, ".."))
+					continue;
+
 				if (iw && iw_update(iw, e->d_name, &rate, &rssi, &noise))
 					update_radiostat(e->d_name, rate, rssi, noise);
 
-				if (!strcmp(e->d_name, "lo"))
-					continue;
-
 				for (i = 0; i < sizeof(sysfs_stats)/sizeof(sysfs_stats[0]); i++)
 				{
 					*sysfs_stats[i].value = 0;