1#!/bin/sh 2# Make list of configuration variables regarding suid handling 3 4# input $1: full path to autoconf.h 5# input $2: full path to applets.h 6# input $3: full path to .config 7# output (stdout): list of CONFIG_ that do or may require suid 8 9# If the environment variable SUID is not set or set to DROP, 10# lists all config options that do not require suid permissions. 11# Otherwise, lists all config options for applets that DO or MAY require 12# suid permissions. 13 14# Maintainer: Bernhard Reutner-Fischer 15 16export LC_ALL=POSIX 17export LC_CTYPE=POSIX 18 19CONFIG_H=${1:-include/autoconf.h} 20APPLETS_H=${2:-include/applets.h} 21DOT_CONFIG=${3:-.config} 22 23case ${SUID:-DROP} in 24[dD][rR][oO][pP]) USE="DROP" ;; 25*) USE="suid" ;; 26esac 27 28$HOSTCC -E -DMAKE_SUID -include $CONFIG_H $APPLETS_H | 29 awk -v USE=${USE} ' 30 /^SUID[ \t]/{ 31 if (USE == "DROP") { 32 if ($2 != "BB_SUID_DROP") next 33 } else { 34 if ($2 == "BB_SUID_DROP") next 35 } 36 cfg = $NF 37 gsub("\"", "", cfg) 38 cfg = substr(cfg, 8) 39 s[i++] = "CONFIG_" cfg 40 s[i++] = "CONFIG_FEATURE_" cfg "_.*" 41 } 42 END{ 43 while (getline < ARGV[2]) { 44 for (j in s) { 45 if ($0 ~ "^" s[j] "=y$") { 46 sub(/=.*/, "") 47 print 48 if (s[j] !~ /\*$/) delete s[j] # can drop this applet now 49 } 50 } 51 } 52 } 53' - $DOT_CONFIG 54 55