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#!/bin/bash
set -e
echo ">>> [fix-bootentry] Running INSIDE target system"
ENTRYDIR="/boot/loader/entries"
[ -d "${ENTRYDIR}" ] || { echo ">>> [fix-bootentry] No ${ENTRYDIR}, skipping."; exit 0; }
# 95-raveos.install (kernel-install hook, fired during pacstrap/mkinitcpio)
# detects the root device via findmnt at hook-time. Depending on the
# chroot/mount-namespace context that detection can silently come back
# empty, producing a loader entry with no "root=" in its options line
# (system then drops to an emergency shell on boot: "Failed to mount ''
# on real root"). On btrfs it can also come back in findmnt's bracket form
# ("/dev/vda2[/@]"), which blkid cannot resolve -- that produces a
# syntactically present but unusable root= (emergency shell: "Failed to
# mount '/dev/vda2[/@]' on real root"). By this point in the install
# sequence /etc/fstab is already correctly generated, so use it as the
# authoritative source and patch both the missing and malformed cases.
ROOT_UUID="$(findmnt -no UUID / || true)"
if [ -z "${ROOT_UUID}" ]; then
ROOT_UUID="$(awk '$2 == "/" && $1 ~ /^UUID=/ {print $1; exit}' /etc/fstab | sed 's/^UUID=//')"
fi
if [ -z "${ROOT_UUID}" ]; then
echo ">>> [fix-bootentry] Could not determine root UUID from findmnt or fstab, leaving entries untouched."
exit 0
fi
echo ">>> [fix-bootentry] Root UUID: ${ROOT_UUID}"
for f in "${ENTRYDIR}"/*.conf; do
[ -f "$f" ] || continue
if grep -qE '^options[[:space:]].*\broot=' "$f"; then
if grep -qE 'root=[^[:space:]]*\[' "$f"; then
echo ">>> [fix-bootentry] Fixing malformed (findmnt-style) root= in: $f"
sed -i -E "s#root=[^[:space:]]*\[[^]]*\]#root=UUID=${ROOT_UUID}#" "$f"
continue
fi
echo ">>> [fix-bootentry] Already has root=, skipping: $f"
continue
fi
echo ">>> [fix-bootentry] Patching missing root= in: $f"
sed -i -E "s#^options[[:space:]]+#options root=UUID=${ROOT_UUID} #" "$f"
done
echo ">>> [fix-bootentry] Done."
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