-- ffi/libc.lua — shared libc bindings: errno, signal, write, read, chdir.

local ffi = require("ffi")

ffi.cdef[[
int   chdir(const char *path);
int   errno;
char *strerror(int errnum);
]]

local M = {}

-- Apply chdir per PHASE0.md §7 (intercepts `cd` so wd persists across popen).
function M.chdir(path)
    error("libc.chdir: not implemented (Phase 0 pending)")
end

return M