NoPie.c - mozsearch

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

/* This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#include <errno.h>

#include <limits.h>

#include <stdio.h>

#include <string.h>

#include <unistd.h>

int main(int argc, char* argv[]) {

  // Ideally, we'd use mozilla::BinaryPath, but that pulls in stdc++compat,

  // and further causes trouble linking with LTO.

  char path[PATH_MAX + 4];

  ssize_t len = readlink("/proc/self/exe", path, PATH_MAX - 1);

  if (len < 0) {

    fprintf(stderr, "Couldn't find the application directory.\n");

    return 255;

  strcpy(path + len, "-bin");

  execv(path, argv);

  // execv never returns. If it did, there was an error.

  fprintf(stderr, "Exec failed with error: %s\n", strerror(errno));

  return 255;