95 lines
3.2 KiB
Bash
95 lines
3.2 KiB
Bash
#!/bin/bash
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#
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# Copyright (c) 2017, The OpenThread Authors.
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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# 3. Neither the name of the copyright holder nor the
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# names of its contributors may be used to endorse or promote products
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# derived from this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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#
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# Purpose:
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# This script creates a swap file, some platforms do not have enough
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# physical RAM to compile the C++/Boost features of the border router.
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#
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SWAP_REQUIRED=${SWAP_REQUIRED:-false}
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SWAP_FILENAME=${SWAP_FILENAME:-/swapfile}
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# 1M * 1024 = 1G swapfile
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SWAP_BLOCK_SIZE=${SWAP_BLOCK_SIZE:-1M}
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SWAP_BLOCK_CNT=${SWAP_BLOCK_CNT:-1024}
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delete_old_swapfile()
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{
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# Delete the old
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if [ -f "${SWAP_FILENAME}" ]; then
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echo "Disable & remove old swapfile"
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sudo swapoff -a
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sudo rm -f "${SWAP_FILENAME}"
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fi
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}
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create_new_swapfile()
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{
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echo "Create new (zeroed) swapfile"
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SWAP_STEPSIZE=64
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for x in $(seq "$SWAP_STEPSIZE" "$SWAP_STEPSIZE" "$SWAP_BLOCK_CNT"); do
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echo "Block: ${x} of ${SWAP_BLOCK_CNT}"
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sudo dd oflag=append conv=notrunc if=/dev/zero of="${SWAP_FILENAME}" bs="$SWAP_BLOCK_SIZE" count="$SWAP_STEPSIZE"
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# this actually creates 1 extra but we don't care
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done
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echo "Setting protections"
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sudo chmod 0600 "${SWAP_FILENAME}"
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echo "Format swapfile"
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sudo mkswap "${SWAP_FILENAME}"
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}
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add_to_fstab()
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{
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echo "Adding ${SWAP_FILENAME} to /etc/fstab"
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rm -f /tmp/fstab.tmp
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grep -v "^${SWAP_FILENAME}" /etc/fstab >>/tmp/fstab.tmp
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echo "${SWAP_FILENAME} none swap defaults 0 0" >>/tmp/fstab.tmp
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sudo cp /tmp/fstab.tmp /etc/fstab
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}
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enable_swapfile()
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{
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echo "Enabling swap space..."
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sudo swapon -a
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}
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setup_swapfile()
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{
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if ${SWAP_REQUIRED}; then
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echo "Swapfile: Creating..."
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delete_old_swapfile
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create_new_swapfile
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add_to_fstab
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enable_swapfile
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echo "Swapfile: Complete"
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else
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echo "Swapfile: not required"
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fi
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}
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