From cfeadeb3bd9e098a95f4e960e5c6fac5f52a800a Mon Sep 17 00:00:00 2001
From: garywill <garywill@disroot.org>
Date: Sun, 27 Jul 2025 12:52:59 +0800
Subject: [PATCH 1/5] start/exit time in temp config dir

---
 lnxrouter | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/lnxrouter b/lnxrouter
index fecd7eb..f5c48b0 100755
--- a/lnxrouter
+++ b/lnxrouter
@@ -1366,6 +1366,7 @@ clean_iptables() {
 
 cleanup() {
     trap "" SIGINT SIGUSR1 SIGUSR2 EXIT SIGTERM
+    touch "$CONFDIR/exit_$(date +"%Y-%m-%d_%H:%M:%S.%6N")"
     echo
     echo
     echo "Doing cleanup.. "
@@ -1412,6 +1413,8 @@ init_conf_dirs() {
     #echo "Config dir: $CONFDIR"
     echo $$ > "$CONFDIR/pid"
 
+    touch "$CONFDIR/begin_$(date +"%Y-%m-%d_%H:%M:%S.%6N")"
+
     COMMON_CONFDIR="$TMPDIR/lnxrouter_common.conf" # config dir for all instances
     mkdir -p "$COMMON_CONFDIR"
 }

From 3900871977124abc888dc9950d4acef4ec8cc547 Mon Sep 17 00:00:00 2001
From: garywill <garywill@disroot.org>
Date: Sun, 27 Jul 2025 12:55:28 +0800
Subject: [PATCH 2/5] add --keep-confdir

---
 lnxrouter | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/lnxrouter b/lnxrouter
index f5c48b0..2dcbcaa 100755
--- a/lnxrouter
+++ b/lnxrouter
@@ -126,6 +126,8 @@ Options:
 
   Instance managing:
     --daemon                Run in background
+    --keep-confdir          Don't delete the temporary config dir after exit
+
     -l, --list-running      Show running instances
     --lc, --list-clients <id|interface>     
                             List clients of an instance. Or list neighbors of
@@ -232,6 +234,7 @@ define_global_variables(){
     NM_PID=
     FIREWALLD_PID=
     TMP_FIREWALLD_ZONE=
+    KEEP_CONFDIR=
 }
 
 parse_user_options(){
@@ -508,6 +511,10 @@ parse_user_options(){
                 LIST_CLIENTS_ID="$1"
                 shift
                 ;;
+            --keep-confdir)
+                shift
+                KEEP_CONFDIR=1
+                ;;
 
             *)
                 echo  "Invalid parameter: $1" 1>&2
@@ -1330,7 +1337,7 @@ _cleanup() {
 
     ip addr flush "${SUBNET_IFACE}"
     
-    rm -rf "$CONFDIR"
+    [[ ! "$KEEP_CONFDIR" -eq 1 ]] && rm -rf "$CONFDIR"
     
     ip link set down dev "${SUBNET_IFACE}"
     

From 01c99f8e4c22b7c386114c9847ea7b45a398ba7c Mon Sep 17 00:00:00 2001
From: garywill <garywill@disroot.org>
Date: Sun, 27 Jul 2025 13:03:47 +0800
Subject: [PATCH 3/5] show config dir at start

---
 lnxrouter | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/lnxrouter b/lnxrouter
index 2dcbcaa..f63272d 100755
--- a/lnxrouter
+++ b/lnxrouter
@@ -1416,14 +1416,14 @@ init_conf_dirs() {
     cd "$TMPDIR" || die "Couldn't change directory to linux-router's temporary path"
 
     CONFDIR="$(mktemp -d $TMPDIR/lnxrouter.${TARGET_IFACE}.conf.XXXXXX)" || die "Instance couldn't make config dir" # config dir for one instance
-    chmod 755 "$CONFDIR"
-    #echo "Config dir: $CONFDIR"
+    echo "Config dir: $CONFDIR"
+    chmod 755 "$CONFDIR" || die "chmod config dir failed"
     echo $$ > "$CONFDIR/pid"
 
     touch "$CONFDIR/begin_$(date +"%Y-%m-%d_%H:%M:%S.%6N")"
 
     COMMON_CONFDIR="$TMPDIR/lnxrouter_common.conf" # config dir for all instances
-    mkdir -p "$COMMON_CONFDIR"
+    mkdir -p "$COMMON_CONFDIR" || die "Failed creating common config dir"
 }
 
 #== functions to deal with running instances

From 9df05cd81a7b9c7658769d6fdce61836cf2e7207 Mon Sep 17 00:00:00 2001
From: garywill <garywill@disroot.org>
Date: Sun, 27 Jul 2025 13:42:50 +0800
Subject: [PATCH 4/5] dependency: crda ,regdb

---
 README.md | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/README.md b/README.md
index 17d0335..1b2135b 100644
--- a/README.md
+++ b/README.md
@@ -82,9 +82,9 @@ I'm currently not packaging for any distro. If you do, open a PR and add the lin
 - iptables (or nftables with `iptables-nft` translation linked)
 - WiFi hotspot dependencies
   - hostapd
-  - iw
-  - iwconfig (you only need this if 'iw' can not recognize your adapter)
+  - iw (or iwconfig, when iw can not recognize adapter)
   - haveged (optional)
+  - crda and wireless-regdb (optional)
 
 
 

From 94949ba40bc3425dac48d26812d79ef0be1cdd16 Mon Sep 17 00:00:00 2001
From: garywill <garywill@disroot.org>
Date: Sun, 27 Jul 2025 14:12:21 +0800
Subject: [PATCH 5/5] show freq band and channel

---
 lnxrouter | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/lnxrouter b/lnxrouter
index f63272d..7aa8e77 100755
--- a/lnxrouter
+++ b/lnxrouter
@@ -1867,6 +1867,8 @@ prepare_wifi_interface() {
             CHANNEL=36
         fi
     fi
+
+    echo "Freq band: $FREQ_BAND GHz   Channel: $CHANNEL"
 }
 
 decide_subnet_interface() {