Function doStatFS

system/lib/wasmfs/syscalls.cpp:1566–1588

}

static int
doStatFS(std::shared_ptr<File>& file, size_t size, struct statfs* buf) {
  if (size != sizeof(struct statfs)) {
    // We only know how to write to a standard statfs, not even a truncated one.
    return -EINVAL;
  }

  // NOTE: None of the constants here are true. We're just returning safe and
  //       sane values, that match the long-existing JS FS behavior (except for
  //       the inode number, where we can do better).
  buf->f_type = 0;
  buf->f_bsize = 4096;
  buf->f_frsize = 4096;
  buf->f_blocks = 1000000;
  buf->f_bfree = 500000;
  buf->f_bavail = 500000;
  buf->f_files = file->getIno();
  buf->f_ffree = 1000000;
  buf->f_fsid = {0, 0};
  buf->f_flags = ST_NOSUID;
  buf->f_namelen = 255;
  return 0;
}

int __syscall_statfs64(const char* path, size_t size, struct statfs* buf) {
  auto parsed = path::parseFile(path);