Function direntForPath

packages/dofs/src/sync/apply.ts:161–185

(
  db: Database,
  path: string,
  inode: number,
)

}

function direntForPath(
  db: Database,
  path: string,
  inode: number,
): { parentInode: number; name: string } {
  const { parts, path: canonical } = canonicalizePath(path);
  if (parts.length === 0) {
    throw new Error(`applyChanges: cannot structurally replace root ${canonical}`);
  }
  const name = parts[parts.length - 1];
  const parentPath = parts.length === 1 ? "/" : `/${parts.slice(0, -1).join("/")}`;
  const parent = resolveInode(db, parentPath, { followSymlinks: false });
  if (parent === null || parent.type !== "dir") {
    throw new Error(`applyChanges: parent missing for structural replacement ${canonical}`);
  }
  const child = db.scalar<number>(
    "SELECT child_inode FROM vfs_dirents WHERE parent_inode = ? AND name = ?",
    parent.inode,
    name,
  );
  if (child !== inode) {
    throw new Error(`applyChanges: dirent mismatch for structural replacement ${canonical}`);
  }
  return { parentInode: parent.inode, name };
}

function applyDirectoryEntry(db: Database, entry: Extract<ChangeEntry, { kind: "dir" }>): void {
  const mode = entry.mode & 0o7777;