From 6bdde971266fa7911066556af811e0be1fe8dfd7 Mon Sep 17 00:00:00 2001
From: Michael Haubenwallner <haubi@fril0049.wamas.com>
Date: Tue, 23 Jan 2018 16:27:41 +0100
Subject: [PATCH] Support installing into EPREFIX.

---
 Makefile                |  27 +++++++--
 tmpfiles => tmpfiles.in | 142 ++++++++++++++++++++++++++----------------------
 2 files changed, 98 insertions(+), 71 deletions(-)
 rename tmpfiles => tmpfiles.in (76%)

diff --git a/Makefile b/Makefile
index 778cbc2..7ea9cd3 100644
--- a/Makefile
+++ b/Makefile
@@ -1,12 +1,27 @@
+EPREFIX ?=
 binprogs = tmpfiles
-bindir = /bin
+bindir = $(EPREFIX)/bin
 binmode = 0755
 install = install
 
-all:
+SOURCES = $(binprogs)
 
-install:
-	$(install) -d $(DESTDIR)$(bindir)
-	$(install) -m $(binmode) $(binprogs) $(DESTDIR)$(bindir)
+all: $(SOURCES)
 
-.PHONY: all install
+install: $(SOURCES)
+	$(install) -d "$(DESTDIR)$(bindir)"
+	$(install) -m $(binmode) $(binprogs) "$(DESTDIR)$(bindir)"
+
+clean:
+
+distclean:
+	rm -f $(SOURCES)
+
+.PHONY: all install clean distclean
+
+$(SOURCES): Makefile
+
+%: %.in
+	sed -e \
+		's^@EPREFIX@^$(EPREFIX)^g' \
+	> $@ < $<
diff --git a/tmpfiles b/tmpfiles.in
similarity index 76%
rename from tmpfiles
rename to tmpfiles.in
index 66b50f4..d4b405b 100755
--- a/tmpfiles
+++ b/tmpfiles.in
@@ -16,6 +16,7 @@
 # as of 2012/03/12 and also implements some more recent features
 #
 
+EPREFIX="@EPREFIX@"
 DRYRUN=0
 
 checkprefix() {
@@ -55,7 +56,7 @@ _chattr() {
 		*) attr="+$attr" ;;
 	esac
 	local IFS=
-	dryrun_or_real chattr $1 "$attr" -- $3
+	dryrun_or_real chattr $1 "$attr" -- "$EPREFIX$3"
 }
 
 relabel() {
@@ -65,30 +66,30 @@ relabel() {
 
 	status=0
 	for path in ${paths}; do
-		if [ -e "$path" ]; then
-			if [ -x /sbin/restorecon ]; then
-				dryrun_or_real restorecon $CHOPTS "$path"
+		if [ -e "$EPREFIX$path" ]; then
+			if [ -x "$EPREFIX"/sbin/restorecon ]; then
+				dryrun_or_real "$EPREFIX"/sbin/restorecon $CHOPTS "$EPREFIX$path"
 				x=$?
 				if [ $x -ne 0 ]; then
 					status=$x
 				fi
 			fi
 			if [ $uid != '-' ]; then
-				dryrun_or_real chown $CHOPTS "$uid" "$path"
+				dryrun_or_real chown $CHOPTS "$uid" "$EPREFIX$path"
 				x=$?
 				if [ $x -ne 0 ]; then
 					status=$x
 				fi
 			fi
 			if [ $gid != '-' ]; then
-				dryrun_or_real chgrp $CHOPTS "$gid" "$path"
+				dryrun_or_real chgrp $CHOPTS "$gid" "$EPREFIX$path"
 				x=$?
 				if [ $x -ne 0 ]; then
 					status=$x
 				fi
 			fi
 			if [ $mode != '-' ]; then
-				dryrun_or_real chmod $CHOPTS "$mode" "$path"
+				dryrun_or_real chmod $CHOPTS "$mode" "$EPREFIX$path"
 				x=$?
 				if [ $x -ne 0 ]; then
 					status=$x
@@ -99,24 +100,24 @@ relabel() {
 	return $status
 }
 
-splitpath() {
-    local path=$1
+splitpath_quoted() {
+    local path=$1 EPREFIX=$2
     while [ -n "$path" ]; do
-        echo $path
+        echo "\'$EPREFIX$path\'"
         path=${path%/*}
     done
 }
 
 _restorecon() {
-    local path=$1
-    if [ -x /sbin/restorecon ]; then
-        dryrun_or_real restorecon -F $(splitpath "$path")
+    local path=$1 p
+    if [ -x "$EPREFIX"/sbin/restorecon ]; then
+        eval "dryrun_or_real '$EPREFIX/sbin/restorecon' -F $(splitpath_quoted "$path" "$EPREFIX")"
     fi
 }
 
 createdirectory() {
 	local mode="$1" uid="$2" gid="$3" path="$4"
-	dryrun_or_real mkdir -p "$path"
+	dryrun_or_real mkdir -p "$EPREFIX$path"
 	if [ "$uid" = - ]; then
 		uid=root
 	fi
@@ -126,14 +127,14 @@ createdirectory() {
 	if [ "$mode" = - ]; then
 		mode=0755
 	fi
-	dryrun_or_real chown $uid "$path"
-	dryrun_or_real chgrp $gid "$path"
-	dryrun_or_real chmod $mode "$path"
+	dryrun_or_real chown $uid "$EPREFIX$path"
+	dryrun_or_real chgrp $gid "$EPREFIX$path"
+	dryrun_or_real chmod $mode "$EPREFIX$path"
 }
 
 createfile() {
 	local mode="$1" uid="$2" gid="$3" path="$4"
-	dryrun_or_real touch "$path"
+	dryrun_or_real touch "$EPREFIX$path"
 	if [ "$uid" = - ]; then
 		uid=root
 	fi
@@ -143,14 +144,14 @@ createfile() {
 	if [ "$mode" = - ]; then
 		mode=0644
 	fi
-	dryrun_or_real chown $uid "$path"
-	dryrun_or_real chgrp $gid "$path"
-	dryrun_or_real chmod $mode "$path"
+	dryrun_or_real chown $uid "$EPREFIX$path"
+	dryrun_or_real chgrp $gid "$EPREFIX$path"
+	dryrun_or_real chmod $mode "$EPREFIX$path"
 }
 
 createpipe() {
 	local mode="$1" uid="$2" gid="$3" path="$4"
-	dryrun_or_real mkfifo "$path"
+	dryrun_or_real mkfifo "$EPREFIX$path"
 	if [ "$uid" = - ]; then
 		uid=root
 	fi
@@ -160,9 +161,9 @@ createpipe() {
 	if [ "$mode" = - ]; then
 		mode=0644
 	fi
-	dryrun_or_real chown $uid "$path"
-	dryrun_or_real chgrp $gid "$path"
-	dryrun_or_real chmod $mode "$path"
+	dryrun_or_real chown $uid "$EPREFIX$path"
+	dryrun_or_real chgrp $gid "$EPREFIX$path"
+	dryrun_or_real chmod $mode "$EPREFIX$path"
 }
 
 _b() {
@@ -177,11 +178,11 @@ _b() {
 	if [ "$mode" = - ]; then
 		mode=0644
 	fi
-	if [ ! -e "$path" ]; then
-		dryrun_or_real mknod -m $mode $path b ${arg%:*} ${arg#*:}
+	if [ ! -e "$EPREFIX$path" ]; then
+		dryrun_or_real mknod -m $mode "$EPREFIX$path" b ${arg%:*} ${arg#*:}
 		_restorecon "$path"
-		dryrun_or_real chown $uid "$path"
-		dryrun_or_real chgrp $gid "$path"
+		dryrun_or_real chown $uid "$EPREFIX$path"
+		dryrun_or_real chgrp $gid "$EPREFIX$path"
 	fi
 }
 
@@ -197,28 +198,28 @@ _c() {
 	if [ "$mode" = - ]; then
 		mode=0644
 	fi
-	if [ ! -e "$path" ]; then
-		dryrun_or_real mknod -m $mode $path c ${arg%:*} ${arg#*:}
+	if [ ! -e "$EPREFIX$path" ]; then
+		dryrun_or_real mknod -m $mode "$EPREFIX$path" c ${arg%:*} ${arg#*:}
 		_restorecon "$path"
-		dryrun_or_real chown $uid "$path"
-		dryrun_or_real chgrp $gid "$path"
+		dryrun_or_real chown $uid "$EPREFIX$path"
+		dryrun_or_real chgrp $gid "$EPREFIX$path"
 	fi
 }
 
 _C() {
 	# recursively copy a file or directory
 	local path=$1 mode=$2 uid=$3 gid=$4 age=$5 arg=$6
-	if [ ! -e "$path" ]; then
-		dryrun_or_real cp -r "$arg" "$path"
+	if [ ! -e "$EPREFIX$path" ]; then
+		dryrun_or_real cp -r "$arg" "$EPREFIX$path"
 		_restorecon "$path"
 		if [ $uid != '-' ]; then
-			dryrun_or_real chown "$uid" "$path"
+			dryrun_or_real chown "$uid" "$EPREFIX$path"
 		fi
 		if [ $gid != '-' ]; then
-			dryrun_or_real chgrp "$gid" "$path"
+			dryrun_or_real chgrp "$gid" "$EPREFIX$path"
 		fi
 		if [ $mode != '-']; then
-			dryrun_or_real chmod "$mode" "$path"
+			dryrun_or_real chmod "$mode" "$EPREFIX$path"
 		fi
 	fi
 }
@@ -229,7 +230,7 @@ _f() {
 
 	[ $CREATE -gt 0 ] || return 0
 
-	if [ ! -e "$path" ]; then
+	if [ ! -e "$EPREFIX$path" ]; then
 		createfile "$mode" "$uid" "$gid" "$path"
 		if [ -n "$arg" ]; then
 			_w "$@"
@@ -243,7 +244,7 @@ _F() {
 
 	[ $CREATE -gt 0 ] || return 0
 
-	dryrun_or_real rm -f "$path"
+	dryrun_or_real rm -f "$EPREFIX$path"
 	createfile "$mode" "$uid" "$gid" "$path"
 	if [ -n "$arg" ]; then
 		_w "$@"
@@ -256,7 +257,7 @@ _d() {
 
 	[ $CREATE -gt 0 ] || return 0
 
-	if [ ! -d "$path" ]; then
+	if [ ! -d "$EPREFIX$path" ]; then
 		createdirectory "$mode" "$uid" "$gid" "$path"
 		_restorecon "$path"
 	fi
@@ -266,8 +267,8 @@ _D() {
 	# Create or empty a directory
 	local path=$1 mode=$2 uid=$3 gid=$4
 
-	if [ -d "$path" ] && [ $REMOVE -gt 0 ]; then
-		dryrun_or_real find "$path" -mindepth 1 -maxdepth 1 -xdev -exec rm -rf {} +
+	if [ -d "$EPREFIX$path" ] && [ $REMOVE -gt 0 ]; then
+		dryrun_or_real find "$EPREFIX$path" -mindepth 1 -maxdepth 1 -xdev -exec rm -rf {} +
 		_restorecon "$path"
 	fi
 
@@ -318,8 +319,8 @@ _H() {
 _L() {
 	# Create a symlink if it doesn't exist yet
 	local path=$1 mode=$2 uid=$3 gid=$4 age=$5 arg=$6
-	if [ ! -e "$path" ]; then
-		dryrun_or_real ln -s "$arg" "$path"
+	if [ ! -e "$EPREFIX$path" ]; then
+		dryrun_or_real ln -s "$arg" "$EPREFIX$path"
 	fi
 	_restorecon "$path"
 }
@@ -330,7 +331,7 @@ _p() {
 
 	[ $CREATE -gt 0 ] || return 0
 
-	if [ ! -p "$path" ]; then
+	if [ ! -p "$EPREFIX$path" ]; then
 		createpipe "$mode" "$uid" "$gid" "$path"
 	fi
 }
@@ -366,10 +367,10 @@ _r() {
 
 	status=0
 	for path in ${paths}; do
-		if [ -f "$path" ]; then
-			dryrun_or_real rm -f "$path"
-		elif [ -d "$path" ]; then
-			dryrun_or_real rmdir "$path"
+		if [ -f "$EPREFIX$path" ]; then
+			dryrun_or_real rm -f "$EPREFIX$path"
+		elif [ -d "$EPREFIX$path" ]; then
+			dryrun_or_real rmdir "$EPREFIX$path"
 		fi
 		x=$?
 		if [ $x -ne 0 ]; then
@@ -390,8 +391,8 @@ _R() {
 
 	status=0
 	for path in ${paths}; do
-		if [ -d "$path" ]; then
-			dryrun_or_real rm -rf --one-file-system "$path"
+		if [ -d "$EPREFIX$path" ]; then
+			dryrun_or_real rm -rf --one-file-system "$EPREFIX$path"
 			x=$?
 			if [ $x -ne 0 ]; then
 				status=$x
@@ -404,11 +405,11 @@ _R() {
 _w() {
 	# Write the argument parameter to a file, if it exists.
 	local path=$1 mode=$2 uid=$3 gid=$4 age=$5 arg=$6
-	if [ -f "$path" ]; then
+	if [ -f "$EPREFIX$path" ]; then
 		if [ $DRYRUN -eq 1 ]; then
-			echo "echo \"$arg\" >>\"$path\""
+			echo "echo \"$arg\" >>\"$EPREFIX$path\""
 		else
-			echo "$arg" >>"$path"
+			echo "$arg" >>"$EPREFIX$path"
 		fi
 	fi
 }
@@ -437,6 +438,8 @@ PREFIX=
 FILES=
 
 while [ $# -gt 0 ]; do
+	# File system (*-prefix=) arguments do not need to contain the EPREFIX,
+	# we will stick them to within the EPREFIX anyway.
 	case $1 in
 		--boot) BOOT=1 ;;
 		--create) CREATE=1 ;;
@@ -444,10 +447,10 @@ while [ $# -gt 0 ]; do
 		--clean) CLEAN=1 ;; # TODO: Not implemented
 		--verbose) VERBOSE=1 ;;
 		--dryrun|--dry-run) DRYRUN=1 ;;
-		--exclude-prefix=*) EXCLUDE="${EXCLUDE}${1##--exclude-prefix=} " ;;
-		--prefix=*) PREFIX="${PREFIX}${1##--prefix=} " ;;
+		--exclude-prefix=*) arg=${1##--exclude-prefix=}; EXCLUDE="${EXCLUDE}${arg#$EPREFIX} " ;;
+		--prefix=*) arg=${1##--prefix=}; PREFIX="${PREFIX}${arg#$EPREFIX} " ;;
 		-*) invalid_option "$1" ;;
-		*) FILES="${FILES} $1"
+		*) FILES="${FILES} ${1#$EPREFIX}"
 	esac
 	shift
 done
@@ -473,11 +476,11 @@ if [ -z "${FILES}" ]; then
 	# `/etc/tmpfiles.d/foo.conf' supersedes `/usr/lib/tmpfiles.d/foo.conf'.
 	# `/run/tmpfiles/foo.conf' will always be read after `/etc/tmpfiles.d/bar.conf'
 	for d in ${tmpfiles_dirs} ; do
-		[ -d $d ] && for f in ${d}/*.conf ; do
+		[ -d "$EPREFIX"$d ] && for f in "$EPREFIX"${d}/*.conf ; do
 			case "${f##*/}" in
 				systemd.conf|systemd-*.conf) continue;;
 			esac
-			[ -f $f ] && tmpfiles_basenames="${tmpfiles_basenames}\n${f##*/}"
+			[ -f "$f" ] && tmpfiles_basenames="${tmpfiles_basenames}\n${f##*/}"
 		done # for f in ${d}
 	done # for d in ${tmpfiles_dirs}
 	FILES="$(printf "${tmpfiles_basenames}\n" | sort -u )"
@@ -488,15 +491,16 @@ tmpfiles_d=''
 for b in ${FILES} ; do
 	if [ "${b##*/}" != "${b}" ]; then
 		# The user specified a path on the command line
-		# Just pass it through unaltered
-		tmpfiles_d="${tmpfiles_d} ${b}"
+		# Just pass it through unaltered (without the optional EPREFIX)
+		tmpfiles_d="${tmpfiles_d} ${b#$EPREFIX}"
 	else
 		real_f=''
 		for d in $tmpfiles_dirs ; do
+			d=$d
 			f=${d}/${b}
-			[ -f "${f}" ] && real_f=$f
+			[ -f "$EPREFIX${f}" ] && real_f=$f
 		done
-		[ -f "${real_f}" ] && tmpfiles_d="${tmpfiles_d} ${real_f}"
+		[ -f "$EPREFIX${real_f}" ] && tmpfiles_d="${tmpfiles_d} ${real_f}"
 	fi
 done
 
@@ -515,6 +519,8 @@ for FILE in $tmpfiles_d ; do
 	# d    /run/user      0755 root root 10d -
 	# Mode, UID, GID, Age, Argument may be omitted!
 	# If Cmd ends with !, the line is only processed if --boot is passed
+	# Path must not contain the EPREFIX, it is prepended within EPREFIX.
+	# However, Argument must contain the EPREFIX if appropriate.
 
 	# XXX: Upstream says whitespace is NOT permitted in the Path argument.
 	# But IS allowed when globs are expanded for the x/r/R/z/Z types.
@@ -531,6 +537,12 @@ for FILE in $tmpfiles_d ; do
 			\#*) continue ;;
 		esac
 
+		# Reject Path with EPREFIX, we fail to parse blanks anyway.
+		# For Argument, as the last one parsed, blanks should work.
+		if [ "${path#$EPREFIX}" != $path ]; then
+			warninvalid ; continue
+		fi
+
 		while [ ${#cmd} -gt 1 ]; do
 			case $cmd in
 				*!) cmd=${cmd%!}; [ "$BOOT" -eq "1" ] || continue 2 ;;
@@ -575,7 +587,7 @@ for FILE in $tmpfiles_d ; do
 		if [ "${DRYRUN}" -eq "0" ]; then
 			[ $rc -ne 0 ] && error=$((error + 1))
 		fi
-	done <$FILE
+	done <"$EPREFIX"$FILE
 done
 
 exit $error
-- 
2.16.1