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/*
* 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) {
// Read all the entries with getmntent().
FILE* fp = setmntent("/proc/mounts", "r");
ASSERT_TRUE(fp != nullptr);
std::vector<std::string> fsnames;
std::vector<std::string> dirs;
mntent* me;
while ((me = getmntent(fp)) != nullptr) {
fsnames.push_back(me->mnt_fsname);
dirs.push_back(me->mnt_dir);
}
ASSERT_EQ(1, endmntent(fp));
// Then again with getmntent_r(), checking they match.
fp = setmntent("/proc/mounts", "r");
ASSERT_TRUE(fp != nullptr);
struct mntent entry;
char buf[BUFSIZ];
size_t i = 0;
while (getmntent_r(fp, &entry, buf, sizeof(buf)) != nullptr) {
ASSERT_EQ(fsnames[i], entry.mnt_fsname);
ASSERT_EQ(dirs[i], entry.mnt_dir);
i++;
}
ASSERT_EQ(1, endmntent(fp));
// And just for good measure: we did see a /proc entry, right?
auto it = std::find(fsnames.begin(), fsnames.end(), "proc");
ASSERT_TRUE(it != fsnames.end());
size_t proc_index = it - fsnames.begin();
ASSERT_EQ("/proc", dirs[proc_index]);
}
TEST(mntent, hasmntopt) {
// indices 1 1
// of keys: 0 5 9 1 4
char mnt_opts[]{"aa=b,a=b,b,bb,c=d"};
struct mntent ent;
memset(&ent, 0, sizeof(ent));
ent.mnt_opts = mnt_opts;
EXPECT_EQ(mnt_opts, hasmntopt(&ent, "aa"));
EXPECT_EQ(mnt_opts + 5, hasmntopt(&ent, "a"));
EXPECT_EQ(mnt_opts + 9, hasmntopt(&ent, "b"));
EXPECT_EQ(mnt_opts + 11, hasmntopt(&ent, "bb"));
EXPECT_EQ(mnt_opts + 14, hasmntopt(&ent, "c"));
EXPECT_EQ(nullptr, hasmntopt(&ent, "d"));
EXPECT_EQ(nullptr, hasmntopt(&ent, "e"));
}
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