add SKIP_BTF and uninstall

Author: r4ulcl

APs/mac80211_hwsim/install.sh

@@ -50,7 +50,7 @@ ${ALT_MODNAME}-objs := mac80211_hwsim.o
 EOF
 
 echo "==> Building ${ALT_MODNAME}.ko …"
-make -s -C "/lib/modules/${KVER}/build" M="${BUILD_DIR}" modules
+SKIP_BTF=1 make -s -C "/lib/modules/${KVER}/build" M="${BUILD_DIR}" modules
 
 # verify version of freshly‑built binary
 NEW_VER="$(modver "./${ALT_MODNAME}.ko")"

APs/mac80211_hwsim/uninstall.sh

@@ -0,0 +1,109 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+ALT_MODNAME="mac80211_hwsim_WiFiChallenge"
+STOCK_MODNAME="mac80211_hwsim"
+TARGET_VERSION="2.4.1-WiFiChallengeLab-version"
+
+RELOAD_STOCK=1
+REMOVE_ANY_VERSION=0
+
+usage() {
+  cat <<'EOF'
+Usage:
+  sudo bash uninstall.sh [--no-reload-stock] [--remove-any-version]
+
+Options:
+  --no-reload-stock     Do not load stock mac80211_hwsim after removal
+  --remove-any-version  Remove the custom module file even if version != 2.4.1
+  -h, --help            Show this help
+EOF
+}
+
+while [[ $# -gt 0 ]]; do
+  case "$1" in
+    --no-reload-stock)
+      RELOAD_STOCK=0
+      ;;
+    --remove-any-version)
+      REMOVE_ANY_VERSION=1
+      ;;
+    -h|--help)
+      usage
+      exit 0
+      ;;
+    *)
+      echo "[-] Unknown argument: $1" >&2
+      usage
+      exit 1
+      ;;
+  esac
+  shift
+done
+
+if [[ "${EUID}" -ne 0 ]]; then
+  echo "[-] Run as root (use sudo)." >&2
+  exit 1
+fi
+
+KVER="$(uname -r)"
+DEST_DIR="/lib/modules/${KVER}/kernel/drivers/net/wireless"
+ALT_MOD_PATH="${DEST_DIR}/${ALT_MODNAME}.ko"
+DKMS_MOD_PATH="/lib/modules/${KVER}/updates/dkms/${ALT_MODNAME}.ko"
+
+echo "[*] Unloading ${ALT_MODNAME} if loaded..."
+modprobe -r "${ALT_MODNAME}" 2>/dev/null || true
+
+declare -a CANDIDATE_PATHS=(
+  "${ALT_MOD_PATH}"
+  "${DKMS_MOD_PATH}"
+)
+
+if RESOLVED_PATH="$(modinfo -n "${ALT_MODNAME}" 2>/dev/null)"; then
+  if [[ -n "${RESOLVED_PATH}" && "${RESOLVED_PATH}" != "(builtin)" ]]; then
+    CANDIDATE_PATHS+=("${RESOLVED_PATH}")
+  fi
+fi
+
+declare -A SEEN=()
+REMOVED=0
+SKIPPED=0
+
+for MOD_PATH in "${CANDIDATE_PATHS[@]}"; do
+  [[ -n "${MOD_PATH}" ]] || continue
+  [[ -f "${MOD_PATH}" ]] || continue
+
+  if [[ -n "${SEEN[${MOD_PATH}]:-}" ]]; then
+    continue
+  fi
+  SEEN["${MOD_PATH}"]=1
+
+  MOD_VER="$(modinfo -F version "${MOD_PATH}" 2>/dev/null || true)"
+
+  if [[ "${REMOVE_ANY_VERSION}" -eq 1 || "${MOD_VER}" == "${TARGET_VERSION}" ]]; then
+    rm -f "${MOD_PATH}"
+    echo "[+] Removed ${MOD_PATH} (version: ${MOD_VER:-unknown})"
+    ((REMOVED+=1))
+  else
+    echo "[=] Keeping ${MOD_PATH} (version: ${MOD_VER:-unknown})"
+    ((SKIPPED+=1))
+  fi
+done
+
+if [[ "${REMOVED}" -gt 0 ]]; then
+  echo "[*] Running depmod..."
+  depmod -a
+else
+  echo "[=] No module files removed."
+fi
+
+if [[ "${RELOAD_STOCK}" -eq 1 ]]; then
+  echo "[*] Loading stock ${STOCK_MODNAME}..."
+  if modprobe "${STOCK_MODNAME}" 2>/dev/null; then
+    echo "[+] Loaded ${STOCK_MODNAME}"
+  else
+    echo "[!] Could not load ${STOCK_MODNAME}. You can load it manually later."
+  fi
+fi
+
+echo "[+] Done. removed=${REMOVED} skipped=${SKIPPED}"