sys-libs/musl: make ldconfig script respect -r

Bug: https://bugs.gentoo.org/666246
Signed-off-by: Wiktor Kerr <w@kerr.sh>
Signed-off-by: Sam James <sam@gentoo.org>

1 files changed, 146 insertions, 0 deletions

diff --git a/sys-libs/musl/files/ldconfig.in-r1 b/sys-libs/musl/files/ldconfig.in-r1
new file mode 100644
index 000000000000..362d11ce815a
--- /dev/null
+++ b/sys-libs/musl/files/ldconfig.in-r1
@@ -0,0 +1,146 @@
+#!/bin/bash -e
+# Copyright 1999-2015 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+ROOT="/"
+
+LDSO_CONF="/etc/ld.so.conf"
+if [[ ! -e $LDSO_CONF ]]; then
+	echo "$LDSO_CONF not found" >&2
+	exit 1
+fi
+
+LDSO_CONF_DIR=$(dirname $LDSO_CONF)
+
+VERBOSE=0
+
+UPDATE_LINKS=1
+
+get_options() {
+	while getopts "vnNXf:C:r:p" opt "$@"; do
+		case $opt in
+		v)
+			echo "ldconfig for musl in Gentoo"
+			VERBOSE=1
+			;;
+		r)
+			ROOT=$OPTARG
+			LDSO_CONF=$ROOT$LDSO_CONF
+			LDSO_CONF_DIR=$(dirname $LDSO_CONF)
+			;;
+		f)
+			LDSO_CONF=$OPTARG
+			;;
+		X)
+			UPDATE_LINKS=0
+			;;
+		\?)
+			echo "Invalid option: -$opt" >&2
+			exit 1
+			;;
+		n|N|C|p)
+			echo "Unimplemented option: -$opt" >&2
+			exit 1
+			;;
+		esac
+	done
+
+	if [[ $UPDATE_LINKS == 1 ]]; then
+		echo "Updating links is not implemented."
+	fi
+}
+
+
+repeated() {
+	local l=$1
+	local drs="${@:2}"
+	for m in $drs; do
+		[[ $m == $l ]] && return 0
+	done
+	return 1
+}
+
+expand() {
+	# We are assuming the ld.so.conf's 'include' is not recursive
+	local f line l
+	local glob="$LDSO_CONF_DIR/$1"
+	local drs="${@:2} "
+
+	for f in $glob; do
+		[[ ! -f $f ]] && continue
+		while read line; do
+			line=${line%%#*}
+			line=${line//:/ }
+			line=${line//,/ }
+			for l in $line; do
+				#We must add this whether or not the directory exists
+				repeated $l $drs && continue
+				drs+=" $l "
+			done
+		done < $f
+	done
+
+	echo $drs
+}
+
+read_ldso_conf() {
+	local drs=" "
+
+	while read line; do
+		# Sanitize the line - see ldconfig(8) for delimiters
+		# Note: bash read turns tabs into spaces and read already
+		# delimits on newlines with the default $IFS
+		line=${line%%#*}   # Remove comments
+		line=${line//:/ }  # Change colon delimiter to space
+		line=${line//,/ }  # Change comma delimiter to space
+
+		next=0
+		for l in $line; do
+			if [[ $next == 1 ]]; then
+				next=0
+				drs=$(expand $l $drs)
+			elif [[ $l == "include" ]]; then
+				next=1
+			else
+				# glibc's ldconfig silently skips non directories
+				if [[ -d $l ]]; then
+					repeated $l $drs && continue
+					drs+=" $l "
+				fi
+			fi
+		done
+	done < $1
+
+	echo $drs
+}
+
+sanitize() {
+	local drs=$@
+
+	repeated "/lib" $drs || drs="/lib $drs"
+	repeated "/usr/lib" $drs || drs="/usr/lib $drs"
+
+	echo $drs
+}
+
+get_options "$@"
+drs=$(read_ldso_conf "$LDSO_CONF")
+drs=$(sanitize $drs)
+
+ARCH=@@ARCH@@
+LDSO_PATH="$ROOT/lib/ld-musl-${ARCH}.so.1"
+if [[ ! -e $LDSO_PATH ]]; then
+	echo "$LDSO_PATH not found" >&2
+	exit 1
+fi
+
+LDSO_ARCH=$(basename $LDSO_PATH)
+LDSO_NAME=${LDSO_ARCH%.so.1}
+ETC_LDSO_PATH="$ROOT/etc/${LDSO_NAME}.path"
+
+X=$(mktemp -p /tmp ${LDSO_NAME}.XXXXXX)
+for d in $drs; do
+	echo $d >> $X
+done
+chmod 644 $X
+mv $X $ETC_LDSO_PATH