Adding upstream version 0.143.upstream/0.143upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 223 insertions, 0 deletions

diff --git a/scripts/local b/scripts/local
new file mode 100644
index 0000000..8f9597f
--- /dev/null
+++ b/scripts/local
@@ -0,0 +1,223 @@
+# Local filesystem mounting			-*- shell-script -*-
+
+local_top()
+{
+	if [ "${local_top_used}" != "yes" ]; then
+		[ "${quiet?}" != "y" ] && log_begin_msg "Running /scripts/local-top"
+		run_scripts /scripts/local-top
+		[ "$quiet" != "y" ] && log_end_msg
+	fi
+	local_top_used=yes
+}
+
+local_block()
+{
+	[ "${quiet?}" != "y" ] && log_begin_msg "Running /scripts/local-block"
+	run_scripts /scripts/local-block "$@"
+	[ "$quiet" != "y" ] && log_end_msg
+}
+
+local_premount()
+{
+	if [ "${local_premount_used}" != "yes" ]; then
+		[ "${quiet?}" != "y" ] && log_begin_msg "Running /scripts/local-premount"
+		run_scripts /scripts/local-premount
+		[ "$quiet" != "y" ] && log_end_msg
+	fi
+	local_premount_used=yes
+}
+
+local_bottom()
+{
+	if [ "${local_premount_used}" = "yes" ] || [ "${local_top_used}" = "yes" ]; then
+		[ "${quiet?}" != "y" ] && log_begin_msg "Running /scripts/local-bottom"
+		run_scripts /scripts/local-bottom
+		[ "$quiet" != "y" ] && log_end_msg
+	fi
+	local_premount_used=no
+	local_top_used=no
+}
+
+# $1=device ID to mount
+# $2=optionname (for root and etc)
+# $3=panic if device is missing (true or false, default: true)
+# Sets $DEV to the resolved device node
+local_device_setup()
+{
+	local dev_id="$1"
+	local name="$2"
+	local may_panic="${3:-true}"
+	local real_dev
+	local time_elapsed
+	local count
+
+	wait_for_udev 10
+
+	# Load ubi with the correct MTD partition and return since fstype
+	# doesn't work with a char device like ubi.
+	if [ -n "$UBIMTD" ]; then
+		/sbin/modprobe ubi "mtd=$UBIMTD"
+		DEV="${dev_id}"
+		return
+	fi
+
+	# Don't wait for a device that doesn't have a corresponding
+	# device in /dev and isn't resolvable by blkid (e.g. mtd0)
+	if [ "${dev_id#/dev}" = "${dev_id}" ] &&
+	   [ "${dev_id#*=}" = "${dev_id}" ]; then
+		DEV="${dev_id}"
+		return
+	fi
+
+	# If the root device hasn't shown up yet, give it a little while
+	# to allow for asynchronous device discovery (e.g. USB).  We
+	# also need to keep invoking the local-block scripts in case
+	# there are devices stacked on top of those.
+	if ! real_dev=$(resolve_device "${dev_id}") ||
+	   ! get_fstype "${real_dev}" >/dev/null; then
+		log_begin_msg "Waiting for ${name}"
+
+		# Timeout is max(30, rootdelay) seconds (approximately)
+		slumber=30
+		if [ "${ROOTDELAY:-0}" -gt $slumber ]; then
+			slumber=$ROOTDELAY
+		fi
+
+		while true; do
+			sleep 1
+			time_elapsed="$(time_elapsed)"
+
+			local_block "${dev_id}"
+
+			# If mdadm's local-block script counts the
+			# number of times it is run, make sure to
+			# run it the expected number of times.
+			while true; do
+				if [ -f /run/count.mdadm.initrd ]; then
+					count="$(cat /run/count.mdadm.initrd)"
+				elif [ -n "${count}" ]; then
+					# mdadm script deleted it; put it back
+					count=$((count + 1))
+					echo "${count}" >/run/count.mdadm.initrd
+				else
+					break
+				fi
+				if [ "${count}" -ge "${time_elapsed}" ]; then
+					break;
+				fi
+				/scripts/local-block/mdadm "${dev_id}"
+			done
+
+			if real_dev=$(resolve_device "${dev_id}") &&
+			   get_fstype "${real_dev}" >/dev/null; then
+				wait_for_udev 10
+				log_end_msg 0
+				break
+			fi
+			if [ "${time_elapsed}" -ge "${slumber}" ]; then
+				log_end_msg 1 || true
+				break
+			fi
+		done
+	fi
+
+	# We've given up, but we'll let the user fix matters if they can
+	while ! real_dev=$(resolve_device "${dev_id}") ||
+	      ! get_fstype "${real_dev}" >/dev/null; do
+		if ! $may_panic; then
+			echo "Gave up waiting for ${name}"
+			return 1
+		fi
+		echo "Gave up waiting for ${name} device.  Common problems:"
+		echo " - Boot args (cat /proc/cmdline)"
+		echo "   - Check rootdelay= (did the system wait long enough?)"
+		if [ "${name}" = root ]; then
+			echo "   - Check root= (did the system wait for the right device?)"
+		fi
+		echo " - Missing modules (cat /proc/modules; ls /dev)"
+		panic "ALERT!  ${dev_id} does not exist.  Dropping to a shell!"
+	done
+
+	DEV="${real_dev}"
+}
+
+local_mount_root()
+{
+	local_top
+	if [ -z "${ROOT}" ]; then
+		panic "No root device specified. Boot arguments must include a root= parameter."
+	fi
+	local_device_setup "${ROOT}" "root file system"
+	ROOT="${DEV}"
+
+	# Get the root filesystem type if not set
+	if [ -z "${ROOTFSTYPE}" ] || [ "${ROOTFSTYPE}" = auto ]; then
+		FSTYPE=$(get_fstype "${ROOT}")
+	else
+		FSTYPE=${ROOTFSTYPE}
+	fi
+
+	local_premount
+
+	if [ "${readonly?}" = "y" ]; then
+		roflag=-r
+	else
+		roflag=-w
+	fi
+
+	checkfs "${ROOT}" root "${FSTYPE}"
+
+	# Mount root
+	# shellcheck disable=SC2086
+	if ! mount ${roflag} ${FSTYPE:+-t "${FSTYPE}"} ${ROOTFLAGS} "${ROOT}" "${rootmnt?}"; then
+		panic "Failed to mount ${ROOT} as root file system."
+	fi
+}
+
+local_mount_fs()
+{
+	read_fstab_entry "$1"
+
+	local_device_setup "$MNT_FSNAME" "$1 file system"
+	MNT_FSNAME="${DEV}"
+
+	local_premount
+
+	if [ "${readonly}" = "y" ]; then
+		roflag=-r
+	else
+		roflag=-w
+	fi
+
+	if [ "$MNT_PASS" != 0 ]; then
+		checkfs "$MNT_FSNAME" "$MNT_DIR" "${MNT_TYPE}"
+	fi
+
+	# Mount filesystem
+	if ! mount ${roflag} -t "${MNT_TYPE}" -o "${MNT_OPTS}" "$MNT_FSNAME" "${rootmnt}${MNT_DIR}"; then
+		panic "Failed to mount ${MNT_FSNAME} as $MNT_DIR file system."
+	fi
+}
+
+mountroot()
+{
+	local_mount_root
+}
+
+mount_top()
+{
+	# Note, also called directly in case it's overridden.
+	local_top
+}
+
+mount_premount()
+{
+	# Note, also called directly in case it's overridden.
+	local_premount
+}
+
+mount_bottom()
+{
+	# Note, also called directly in case it's overridden.
+	local_bottom
+}