#include <unistd.h>
#include <stdio.h>
#include <errno.h>

size_t confstr(int name, char* buf, size_t len) {
  const char* s = "";
  if (!name) {
    s = "/bin:/usr/bin";
  } else if ((name & ~4U) != 1 &&
             name - _CS_POSIX_V6_ILP32_OFF32_CFLAGS > 31U) {
    errno = EINVAL;
    return 0;
  }
  // snprintf is overkill but avoid wasting code size to implement
  // this completely useless function and its truncation semantics
  return snprintf(buf, len, "%s", s) + 1;
}