Initial RK1 media-center image project

2026-08-17 18:42:29 +00:00
commit 5fe41e79e9
81 changed files with 5725 additions and 0 deletions
@@ -0,0 +1,61 @@
+#!/usr/bin/env bash
+set -Eeuo pipefail
+
+[[ $# -eq 2 ]] || { echo "Usage: $0 ROOTFS.ext4 TREE" >&2; exit 2; }
+ROOTFS=$1
+TREE=$2
+[[ -f "$ROOTFS" && -d "$TREE" ]] || { echo "Invalid rootfs or tree" >&2; exit 2; }
+
+COMMANDS=$(mktemp)
+trap 'rm -f -- "$COMMANDS"' EXIT
+
+escape_debugfs() {
+  local value=$1
+  value=${value//\\/\\\\}
+  value=${value//\"/\\\"}
+  printf '%s' "$value"
+}
+
+while IFS= read -r -d '' source_path; do
+  relative_path=${source_path#"$TREE"/}
+  target_path="/${relative_path}"
+  quoted_target=$(escape_debugfs "$target_path")
+  if [[ -d "$source_path" && ! -L "$source_path" ]]; then
+    printf 'mkdir "%s"\n' "$quoted_target" >>"$COMMANDS"
+  fi
+done < <(find "$TREE" -mindepth 1 -type d -print0 | sort -z)
+
+while IFS= read -r -d '' source_path; do
+  relative_path=${source_path#"$TREE"/}
+  target_path="/${relative_path}"
+  quoted_source=$(escape_debugfs "$source_path")
+  quoted_target=$(escape_debugfs "$target_path")
+  if [[ -L "$source_path" ]]; then
+    printf 'rm "%s"\n' "$quoted_target" >>"$COMMANDS"
+    printf 'symlink "%s" "%s"\n' "$quoted_target" "$(escape_debugfs "$(readlink "$source_path")")" >>"$COMMANDS"
+  elif [[ -f "$source_path" ]]; then
+    printf 'rm "%s"\n' "$quoted_target" >>"$COMMANDS"
+    printf 'write "%s" "%s"\n' "$quoted_source" "$quoted_target" >>"$COMMANDS"
+  fi
+done < <(find "$TREE" -mindepth 1 \( -type f -o -type l \) -print0 | sort -z)
+
+while IFS= read -r -d '' source_path; do
+  relative_path=${source_path#"$TREE"/}
+  target_path="/${relative_path}"
+  quoted_target=$(escape_debugfs "$target_path")
+  permissions=$(stat -c '%a' "$source_path")
+  if [[ -d "$source_path" && ! -L "$source_path" ]]; then
+    file_type=040000
+  elif [[ -L "$source_path" ]]; then
+    file_type=0120000
+  else
+    file_type=0100000
+  fi
+  printf 'set_inode_field "%s" uid 0\n' "$quoted_target" >>"$COMMANDS"
+  printf 'set_inode_field "%s" gid 0\n' "$quoted_target" >>"$COMMANDS"
+  printf 'set_inode_field "%s" mode 0%o\n' "$quoted_target" "$((file_type | 8#$permissions))" >>"$COMMANDS"
+done < <(find "$TREE" -mindepth 1 -print0 | sort -z)
+
+# debugfs reports benign "already exists" and "file not found" diagnostics for
+# idempotent mkdir/rm operations. The caller performs explicit postconditions.
+debugfs -w -f "$COMMANDS" "$ROOTFS" >/dev/null 2>&1