Initial scaffold

scripts/mkfs-root.sh

@@ -0,0 +1,28 @@
+#!/usr/bin/env sh
+# mkfs-root.sh — format/seed the target root for the chosen filesystem
+# Usage: mkfs-root.sh [ext4|btrfs|xfs|zfs|f2fs]
+. "$(dirname "$0")/common.sh"
+
+FS="${1:-ext4}"
+
+# Keru builds to a plain directory staged by Kama; the filesystem choice is
+# applied at install/flash time. This script writes the fstab + initramfs
+# config so the built system knows how to mount its own root.
+ROOT="${ROOT:-/tmp/keru/root}"
+case "$FS" in
+    ext4)  FSTYPE=ext4; MK="mkfs.ext4" ;;
+    btrfs) FSTYPE=btrfs; MK="mkfs.btrfs" ;;
+    xfs)   FSTYPE=xfs; MK="mkfs.xfs" ;;
+    zfs)   FSTYPE=zfs; MK="zpool" ;;
+    f2fs)  FSTYPE=f2fs; MK="mkfs.f2fs" ;;
+    *) die "unsupported filesystem: $FS" ;;
+esac
+info "target filesystem: $FSTYPE ($MK)"
+
+# drop fstab template
+mkdir -p "$ROOT/etc"
+cat > "$ROOT/etc/fstab" <<EOF
+# Keru generated fstab — root filesystem: $FSTYPE
+# /dev/ROOT / $FSTYPE rw,relatime 0 1
+EOF
+info "wrote fstab for $FSTYPE"