install wrapper

install (text/plain), 2.08 KB, created by Sascha Lucas on 2007-07-03 12:40:45 UTC

#!/bin/bash

# rational:
#   A gentoo/freebsd system shares ${PORTDIR} readonly from a linux partition.
#   Ebuilds using do{bin,sbin,exe,man,doc,html,info} call install (/usr/bin/install) 
#   also on files from ${FILESDIR}, which is readonly and in case of freebsd has the
#   uchg flag set. The BSD version of install is flag-aware and keeps this flag set
#   on the destination file. Later any operation like chown/chmod etc. is not
#   permitted on this files.

# solution:
#   a wrapper around install should check if we are working on ${FILESDIR} and if it 
#   is save to remove uchg flag.

#set -x 

INSTALL="/usr/bin/install"
source "${PORTAGE_BIN_PATH:-/usr/lib/portage/bin}"/isolated-functions.sh

if [[ "$(uname -s)" = "FreeBSD" ]]; then
	# just parse any possible option from INSTALL(1) and save original options
	while getopts "bB:Ccdf:g:Mm:o:pSsv" OPTION; do
        	case ${OPTION} in
                	f)      SKIP_WRAPPING=true;;
			d)	SKIP_WRAPPING=true;;
	        esac
	done
	if [[ "${SKIP_WRAPPING}" = "true" ]]; then
		#vecho "install called with -f or -d ... skipping the wrapper" 1>&2
		eval ${INSTALL} ${@}
	else
		# save original options
		for (( i=1; i<=$(( ${OPTIND} - 1 )); i++ )); do
			ORIGINAL_OPTIONS="${ORIGINAL_OPTIONS} ${!i}"
		done
		# check remaining parameters (sources) if they are onyl from ${FILESDIR}
		shift $(( ${OPTIND} - 1 ))
		for (( i=1; i<${#}; i++ )); do
			FILE_TO_CHECK=${!i}
			DIR=$(dirname ${FILE_TO_CHECK})
			if [[ "${DIR}" = "${FILESDIR}" ]]; then
				if find ${FILE_TO_CHECK} -flags uchg > /dev/null 2>&1; then
					vecho "${FILE_TO_CHECK} with uchg flag found... removing" 1>&2
					REMOVE_UCHG_FILES="${REMOVE_UCHG_FILES} ${FILE_TO_CHECK}"
				else
					OTHER_FILES="${OTHER_FILES} ${FILE_TO_CHECK}"
				fi
			else
				OTHER_FILES="${OTHER_FILES} ${FILE_TO_CHECK}"
			fi
		done 
		shift $(( ${#} - 1 ))
		DESTINATION=${1}
		[[ -n ${REMOVE_UCHG_FILES} ]] && eval ${INSTALL} -f nouchg ${ORIGINAL_OPTIONS} ${REMOVE_UCHG_FILES} ${DESTINATION}
		[[ -n ${OTHER_FILES} ]] && eval ${INSTALL} ${ORIGINAL_OPTIONS} ${OTHER_FILES} ${DESTINATION}
	fi
else
	eval ${INSTALL} ${@}
fi