diff options
Diffstat (limited to 'meta/files/overlayfs-etc-preinit.sh.in')
-rw-r--r-- | meta/files/overlayfs-etc-preinit.sh.in | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/meta/files/overlayfs-etc-preinit.sh.in b/meta/files/overlayfs-etc-preinit.sh.in new file mode 100644 index 0000000000..b05e3957a3 --- /dev/null +++ b/meta/files/overlayfs-etc-preinit.sh.in @@ -0,0 +1,52 @@ +#!/bin/sh + +echo "PREINIT: Start" + +PATH=/sbin:/bin:/usr/sbin:/usr/bin +if {CREATE_MOUNT_DIRS}; then + mount -o remount,rw / + + mkdir -p /proc + mkdir -p /sys + mkdir -p /run + mkdir -p /var/run + mkdir -p {OVERLAYFS_ETC_MOUNT_POINT} +fi + +mount -t proc proc /proc +mount -t sysfs sysfs /sys + +[ -z "$CONSOLE" ] && CONSOLE="/dev/console" + +BASE_OVERLAY_ETC_DIR={OVERLAYFS_ETC_MOUNT_POINT}/overlay-etc +UPPER_DIR=$BASE_OVERLAY_ETC_DIR/upper +WORK_DIR=$BASE_OVERLAY_ETC_DIR/work +LOWER_DIR=$BASE_OVERLAY_ETC_DIR/lower + +if mount -n -t {OVERLAYFS_ETC_FSTYPE} \ + -o {OVERLAYFS_ETC_MOUNT_OPTIONS} \ + {OVERLAYFS_ETC_DEVICE} {OVERLAYFS_ETC_MOUNT_POINT} +then + mkdir -p $UPPER_DIR + mkdir -p $WORK_DIR + + if {OVERLAYFS_ETC_EXPOSE_LOWER}; then + mkdir -p $LOWER_DIR + + # provide read-only access to original /etc content + mount -o bind,ro /etc $LOWER_DIR + fi + + mount -n -t overlay \ + -o upperdir=$UPPER_DIR \ + -o lowerdir=/etc \ + -o workdir=$WORK_DIR \ + -o index=off,xino=off,redirect_dir=off,metacopy=off \ + $UPPER_DIR /etc || \ + echo "PREINIT: Mounting etc-overlay failed!" +else + echo "PREINIT: Mounting </data> failed!" +fi + +echo "PREINIT: done; starting </sbin/init>" +exec {SBIN_INIT_NAME} |