File: close_fds_exec.c

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/*
 * Copyright (c) 2022 Firebuild Inc.
 * All rights reserved.
 *
 * Free for personal use and commercial trial.
 * Non-trial commercial use requires licenses available from https://firebuild.com.
 * Modification and redistribution are permitted, but commercial use of derivative
 * works is subject to the same requirements of this license
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

#include <unistd.h>

int main(int argc, char* argv[]) {
  (void) argc;  /* unused */

  int i;
  for (i = 3; i < 200; i++) {
    close(i);
  }
  execvp(argv[1], &argv[1]);
}