1#!/bin/sh 2# 3# SPDX-License-Identifier: MIT 4# 5# This script is called from inside postinstall scriptlets at do_rootfs time. It 6# actually adds, at the end, the list of packages for which the intercept script 7# is valid. Also, if one wants to pass any variables to the intercept script from 8# the postinstall itself, they will be added immediately after the shebang line. 9# 10# Usage: postinst_intercept <intercept_script_name> <package_name> <mlprefix=...> <var1=...> ... <varN=...> 11# * intercept_script_name - the name of the intercept script we want to change; 12# * package_name - add the package_name to list of packages the intercept script 13# is used for; 14# * mlprefix=... - this one is needed in order to have separate hooks for multilib. 15# * var1=... - var1 will have the value we provide in the intercept script. This 16# is useful when we want to pass on variables like ${libdir} to 17# the intercept script; 18# 19[ $# -lt 3 ] && exit 1 20 21intercept_script=$INTERCEPT_DIR/$1 && shift 22package_name=$1 && shift 23mlprefix=$(echo $1 |sed -ne "s/^mlprefix=\(.*\)-/\1/p") && shift 24 25# if the hook we want to install does not exist, then there's nothing we can do 26[ -f "$intercept_script" ] || exit 1 27 28# if the postinstall wanting to install the hook belongs to a multilib package, 29# then we'd better have a separate hook for this because the default ${libdir} and 30# ${base_libdir} will point to the wrong locations 31if [ -n "$mlprefix" ]; then 32 ml_intercept_script=$intercept_script-$mlprefix 33 # if the multilib hook does not exist, create it from the default one 34 if [ ! -f "$ml_intercept_script" ]; then 35 cp $intercept_script $ml_intercept_script 36 37 # clear the ##PKGS: line and the already set variables 38 [ -x "$ml_intercept_script" ] && sed -i -e "2,$(($#+1)) {/.*/d}" -e "/^##PKGS: .*/d" $ml_intercept_script 39 fi 40 41 intercept_script=$ml_intercept_script 42fi 43 44chmod +x "$intercept_script" 45 46pkgs_line=$(grep "##PKGS:" $intercept_script) 47if [ -n "$pkgs_line" ]; then 48 # line exists, add this package to the list only if it's not already there 49 if [ -z "$(echo "$pkgs_line" | grep " $package_name ")" ]; then 50 sed -i -e "s/##PKGS:.*/\0${package_name} /" $intercept_script 51 fi 52else 53 for var in "$@"; do 54 sed -i -e "\%^#\!/bin/.*sh%a $var" $intercept_script 55 done 56 echo "##PKGS: ${package_name} " >> $intercept_script 57fi 58 59