53 lines
2.0 KiB
Bash
53 lines
2.0 KiB
Bash
#!/bin/sh
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#
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# Copyright (C) 2017 by Digi International Inc.
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#
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# This Source Code Form is subject to the terms of the Mozilla Public
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# License, v. 2.0. If a copy of the MPL was not distributed with this
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# file, you can obtain one at http://mozilla.org/MPL/2.0/.
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#
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# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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#
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UPDATE_MOUNTPOINT="/mnt/update"
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PARTITION_NAME="update"
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# This will detect if the block device has a update partition
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is_update_device() {
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grep -qs update /proc/mtd
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}
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# This will verify that the requested partition is the update partition
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is_update_partition() {
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grep -qs "^${MDEV}:.*\<update\>.*" /proc/mtd
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}
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if is_update_device; then
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if is_update_partition; then
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# Attach and get UBI device number
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dev_number="$(ubiattach -p /dev/${MDEV} 2>/dev/null | sed -ne 's,.*device number \([0-9]\).*,\1,g;T;p' 2>/dev/null)"
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# Check if volume exists.
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if ubinfo "/dev/ubi${dev_number}" -N "${PARTITION_NAME}" >/dev/null 2>&1; then
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if mkdir -p ${UPDATE_MOUNTPOINT} && ! mountpoint -q ${UPDATE_MOUNTPOINT}; then
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# Mount the volume.
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if ! mount -t ubifs "ubi${dev_number}:${PARTITION_NAME}" "${UPDATE_MOUNTPOINT}"; then
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echo "ERROR: Could not mount '${PARTITION_NAME}' partition"
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rmdir --ignore-fail-on-non-empty ${UPDATE_MOUNTPOINT}
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fi
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fi
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else
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echo "ERROR: Could not mount '${PARTITION_NAME}' partition, volume not found"
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ubidetach -p "/dev/${MDEV}" >/dev/null 2>&1
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rmdir --ignore-fail-on-non-empty ${UPDATE_MOUNTPOINT}
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fi
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fi
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# If it's 'update' device but not partition, just exit
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exit 0
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fi
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