1 files changed, 120 insertions, 0 deletions

diff --git a/recipes-support/32b-env/files/set_32b_env_chroot.sh b/recipes-support/32b-env/files/set_32b_env_chroot.sh
new file mode 100755
index 0000000..8d450c4
--- /dev/null
+++ b/recipes-support/32b-env/files/set_32b_env_chroot.sh
@@ -0,0 +1,120 @@
+#!/bin/sh
+
+help() 
+{
+    echo " The scope of this script is to setup an environment for 32b legacy applications."
+    echo " This is a replacement for MULTILIB mechanism which is not available yet for aarch64."
+    echo " chroot is used to setup an isolated environment for 32b applications"
+    echo "                                                                                      "
+    echo " Prerequisites:"
+    echo "    - user must build a 32b amrv7 rootfs (e.q. build a image for qemuarm)"
+    echo "    - user must copy 32b armv7 rootfs under 64b rootfs (e.q. /mnt/rootfs32)"
+    echo "    - user must copy 32b application under 32b rootfs (e.q. /mnt/rootfs32/myapp)"
+    echo ""
+    echo " Run setup script to prepare the environment for 32b applications"
+    echo "    > set_32b_env_chroot -r /mnt/rootfs32"
+    echo ""
+    echo " Run 32b applications"
+    echo "    @> ./myapp/myexec" 
+    echo "" 
+    echo " In order to return to default root just type <exit>"
+    echo "    @> exit"
+    exit
+}
+
+usage()
+{
+    echo "set_32b_env_chroot OPTIONS"
+    echo "OPTIONS:"
+    echo ""
+    echo "     -r <32b_rootfs> : path to a 32b rootfs."
+    echo "     -h              : display help"
+    echo ""
+    exit
+}
+
+if [[ $# -eq 0 ]] ; then
+    echo "[ERR]: Missing script parameters!"
+    echo ""
+    usage
+fi
+
+while getopts "hr:" OPTION; 
+do
+        case $OPTION in
+
+                r)
+                        ROOTFS32b_PATH="$OPTARG"
+                        ;;
+
+                ?)
+                        help
+                        ;;
+
+        esac
+done
+
+ABS_PATH=`cd "${ROOTFS32b_PATH}"; pwd`
+ROOTFS32b_PATH=${ABS_PATH}
+
+if [[ ! -d ${ROOTFS32b_PATH} ]] ; then
+    usage
+fi
+
+if [[ ! -d ${ROOTFS32b_PATH}/dev ]] ; then
+    mkdir ${ROOTFS32b_PATH}/dev
+fi
+
+if [[ ! -d ${ROOTFS32b_PATH}/proc ]] ; then
+    mkdir ${ROOTFS32b_PATH}/proc
+fi
+
+if [[ ! -d ${ROOTFS32b_PATH}/sys ]] ; then
+    mkdir ${ROOTFS32b_PATH}/sys
+fi
+
+if [[ ! -d ${ROOTFS32b_PATH}/etc ]] ; then
+    mkdir ${ROOTFS32b_PATH}/etc
+fi
+
+umount ${ROOTFS32b_PATH}/dev/pts 2>/dev/null
+umount ${ROOTFS32b_PATH}/dev 2>/dev/null
+mount --bind /dev ${ROOTFS32b_PATH}/dev
+if [[ "$?" != "0" ]] ; then
+    echo "Failed to mount /dev folder"
+    exit
+fi
+
+umount ${ROOTFS32b_PATH}/proc 2>/dev/null
+mount --bind /proc ${ROOTFS32b_PATH}/proc
+if [[ "$?" != "0" ]] ; then
+    echo "Failed to mount /proc folder"
+    exit
+fi
+
+umount ${ROOTFS32b_PATH}/sys 2>/dev/null
+mount --bind /sys ${ROOTFS32b_PATH}/sys
+if [[ "$?" != "0" ]] ; then
+    echo "Failed to mount /sys folder"
+    exit
+fi
+
+mount --bind /dev/pts ${ROOTFS32b_PATH}/dev/pts
+if [[ "$?" != "0" ]] ; then
+    echo "Failed to mount /dev/pts folder"
+    exit
+fi
+
+cp /etc/resolv.conf ${ROOTFS32b_PATH}/etc/resolv.conf
+if [[ "$?" != "0" ]] ; then
+    echo "Failed to copy resolv.conf file"
+    exit
+fi
+
+PATH=/bin:/sbin:/usr/bin:/usr/sbin
+
+echo "New root will be ${ROOTFS32b_PATH}/   type \"exit\" to return to /"
+chroot ${ROOTFS32b_PATH}/ /bin/sh
+if [[ "$?" != "0" ]] ; then
+    echo "Failed to start chroot!"
+fi