35 lines
983 B
Plaintext
35 lines
983 B
Plaintext
chrooted() {
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# borrowed from udev's postinst
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if [ "$(stat -c %d/%i /)" = "$(stat -Lc %d/%i /proc/1/root 2>/dev/null)" ]; then
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# the devicenumber/inode pair of / is the same as that of
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# /sbin/init's root, so we're *not* in a chroot and hence
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# return false.
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return 1
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fi
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return 0
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}
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case "${ACTION}" in
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pre)
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# First time install. Can we autodetect the RESUME partition?
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if [ -r /proc/swaps ]; then
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RESUME=$(tail -n $(($(wc -l /proc/swaps | awk ' { print $1 } ') - 1)) \
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/proc/swaps | sort -rk3 | head -n 1 | awk ' { print $1 } ')
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if command -v vol_id >/dev/null 2>&1; then
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UUID=$(vol_id -u "$RESUME" || true)
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elif [ -x /lib/udev/vol_id ]; then
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UUID=$(/lib/udev/vol_id -u "$RESUME" || true)
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fi
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if [ -n "$UUID" ]; then
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RESUME="UUID=$UUID"
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fi
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fi
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# write conf.d/resume if not in a chroot
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if [ -n "${RESUME}" ] && ! chrooted; then
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mkdir -p /etc/initramfs-tools/conf.d
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echo "RESUME=${RESUME}" > /etc/initramfs-tools/conf.d/resume
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fi
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;;
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esac
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