Suggested fix/enhancement for wireless-tools.if-pre-up script

Shawn Joseph smjoseph at vt.edu
Tue Jun 4 13:52:16 UTC 2019


I've been experiencing an issue with my wireless card and ifup relating to
this script. I have a fix for it and thought the devs here might be
interested.

This is the issue: If a setting fails to be applied, the script brings the
card up and then tries to apply the setting again. This is fine, but it
leaves the card up. Later on in the ifup process other scripts try to
access the card and if the card is up it will respond that it's busy and
ifup fails.

My solution has been to alter the wireless-tools if-pre-up script so that
it ends by running ifconfig down in this case. Here is the patch:

--- ./wireless-tools.if-pre-up 2017-04-22 10:15:05.000000000 -0400
+++ ./wireless-tools 2019-06-03 22:39:24.314725863 -0400
@@ -6,7 +6,7 @@
   exit 0
 fi

-# check if this is a 802.11 device we're supposed to be effecting
+# check if this is a 802.11 device we're supposed to be affecting
 case "${IF_WIRELESS:-enable}" in
  wireless-tools|iwconfig)
  # *we* and not some other 802.11 tool should be used
@@ -140,4 +140,5 @@
  FAIL=
  ifconfig "$IFACE" up
  apply_settings
+ ifconfig "$IFACE" down
 fi
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