46 lines
1.4 KiB
Text
46 lines
1.4 KiB
Text
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#!/bin/bash
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# Copyright 2017 Matthew Thode
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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if [[ "${DIB_DEBUG_TRACE:-0}" -gt 0 ]]; then
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set -x
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fi
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set -eu
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set -o pipefail
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# make /dev/shm dir if it doesn't exist
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# mount tmpfs and chown it
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# existing programs could be using /dev/shm
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# This means it cannot be moved or backed
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# up as a copy easily. The only remaining
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# option is to move the link if it exists
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# as a link. Existing programs will still
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# hold the file handle of the original
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# location open and new programs can use
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# the fixed /dev/shm.
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[[ -e /run/lock/shm_fixed ]] && exit 0 # shm has already been fixed
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if [[ ! -d /dev/shm ]]; then
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if [[ ! -e /dev/shm ]]; then
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if [[ -L /dev/shm ]]; then
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mv /dev/shm /dev/shm.orig
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fi
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mkdir /dev/shm
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fi
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fi
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mount -t tmpfs none /dev/shm
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chmod 1777 /dev/shm
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mkdir -p /run/lock
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touch /run/lock/shm_fixed
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