Function resolveFileInode

packages/dofs/src/fs/writeFile.ts:391–410

(db: Database, path: string)

}

function resolveFileInode(db: Database, path: string): { inode: number; mode: number } {
  const { path: canonical } = canonicalizePath(path);
  const node = db.one<{ inode: number; type: "file" | "dir"; mode: number }>(
    `SELECT n.inode AS inode, n.type AS type, n.mode AS mode
       FROM vfs_nodes n
      WHERE n.inode = (
        SELECT child_inode
          FROM vfs_dirents
         WHERE parent_inode = ? AND name = ?
      )`,
    ...parentAndNameForResolvedPath(db, path),
  );
  if (node === undefined) {
    throw createWorkspaceError("ENOENT", `no such file: ${canonical}`, canonical);
  }
  if (node.type !== "file") {
    throw createWorkspaceError("EISDIR", `path is a directory: ${canonical}`, canonical);
  }
  return { inode: node.inode, mode: node.mode };
}

function parentAndNameForResolvedPath(db: Database, path: string): [number, string] {
  const { parts, path: canonical } = canonicalizePath(path);