platform_bionic/tests/mntent_test.cpp

/*
 * Copyright (C) 2013 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include <gtest/gtest.h>

#include <mntent.h>

TEST(mntent, mntent_smoke) {
  FILE* fp = setmntent("/proc/mounts", "r");
  ASSERT_TRUE(fp != NULL);

  ASSERT_TRUE(getmntent(fp) != NULL);

  bool saw_proc = false;

  struct mntent entry;
  char buf[BUFSIZ];
  while (getmntent_r(fp, &entry, buf, sizeof(buf)) != NULL) {
    if (strcmp(entry.mnt_fsname, "proc") == 0 && strcmp(entry.mnt_dir, "/proc") == 0) {
      saw_proc = true;
    }
  }

  ASSERT_TRUE(saw_proc);

  ASSERT_EQ(1, endmntent(fp));
}