71 lines
1.7 KiB
Text
71 lines
1.7 KiB
Text
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#!/bin/sh
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: ${DISORDER=0}
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set -uex
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verb=$1
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front=$2
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back=$front-back
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[ "tmp/build/${front#tmp/build/}" = "$front" ]
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[ "tmp/build/${back#tmp/build/}" = "$back" ]
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remove_hard() {
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if [ -e "$1" ]; then
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sudo umount "$1" 2>/dev/null || true
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if ! rm -rf "$1" 2>/dev/null; then
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chmod -R +w "$1"
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rm -rf "$1"
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fi
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fi
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}
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if [ "$verb" = create ]; then
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echo "### helpers/builddir: creating $front..."
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remove_hard "$front"; remove_hard "$back"
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mkdir -p "$front"
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if [ "$DISORDER" = 1 ]; then
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sudo umount "$back" || true
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rm -rf "$back"
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mkdir -p "$front" "$back"
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sudo mount -o size=16G -t tmpfs tmpfs "$back"
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sudo mount --bind "$back" "$front"
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[ $(findmnt -no FSTYPE "$front") = tmpfs ]
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fi
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elif [ "$verb" = pre-build ]; then
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[ -e "$front" ]
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if [ "$DISORDER" = 1 ]; then
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echo "### helpers/builddir: disordering $front..."
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[ -e "$back" ]
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[ $(findmnt -no FSTYPE "$back") = tmpfs ]
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sudo umount "$front"
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sudo disorderfs --shuffle-dirents=yes \
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-o allow_other --multi-user=yes \
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"$back" "$front"
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[ $(findmnt -no FSTYPE "$front") = fuse.disorderfs ]
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fi
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elif [ "$verb" = post-build ]; then
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if [ "$DISORDER" = 1 ]; then
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echo "### helpers/builddir: ordering $front..."
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[ ! -e "$front" ] && [ ! -e "$back" ]
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[ $(findmnt -no FSTYPE "$front") = fuse.disorderfs ]
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[ $(findmnt -no FSTYPE "$back") = tmpfs ]
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sudo umount "$front"
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sudo mount --bind "$back" "$front"
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fi
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elif [ "$verb" = remove ]; then
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echo "### helpers/builddir: removing $front..."
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if [ "$DISORDER" = 1 ]; then
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[ $(findmnt -no FSTYPE "$back") = tmpfs ]
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sudo umount "$front"
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sudo umount "$back"
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rm -d "$front" "$back"
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else
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remove_hard "$front"; remove_hard "$back"
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fi
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[ ! -e "$front" ] && [ ! -e "$back" ]
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else
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exit 9
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fi
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