7f925097e8
SELinux denies access to some files in /sys, so we can't just trawl through that asserting general truths. Instead, create a small known tree. Sadly neither ftw nor nftw takes user callback data, otherwise it would be nice to assert that we visit all the expected nodes. Bug: 19252748 Change-Id: Ib5309c38aaef53e6030281191a265a8d5a619044
110 lines
3.1 KiB
C++
110 lines
3.1 KiB
C++
/*
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* Copyright (C) 2014 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <ftw.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include "TemporaryFile.h"
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#include <gtest/gtest.h>
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static void MakeTree(const char* root) {
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char path[PATH_MAX];
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snprintf(path, sizeof(path), "%s/dir", root);
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ASSERT_EQ(0, mkdir(path, 0555));
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snprintf(path, sizeof(path), "%s/dir/sub", root);
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ASSERT_EQ(0, mkdir(path, 0555));
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snprintf(path, sizeof(path), "%s/unreadable-dir", root);
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ASSERT_EQ(0, mkdir(path, 0000));
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snprintf(path, sizeof(path), "%s/dangler", root);
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ASSERT_EQ(0, symlink("/does-not-exist", path));
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snprintf(path, sizeof(path), "%s/symlink", root);
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ASSERT_EQ(0, symlink("sub2", path));
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int fd;
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snprintf(path, sizeof(path), "%s/regular", root);
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ASSERT_NE(-1, fd = open(path, O_CREAT|O_TRUNC, 0666));
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ASSERT_EQ(0, close(fd));
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}
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void sanity_check_ftw(const char* fpath, const struct stat* sb, int tflag) {
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ASSERT_TRUE(fpath != NULL);
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ASSERT_TRUE(sb != NULL);
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if (S_ISDIR(sb->st_mode)) {
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EXPECT_TRUE(tflag == FTW_D || tflag == FTW_DNR || tflag == FTW_DP) << fpath;
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} else if (S_ISLNK(sb->st_mode)) {
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EXPECT_EQ(FTW_SL, tflag) << fpath;
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} else {
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EXPECT_EQ(FTW_F, tflag) << fpath;
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}
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}
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void sanity_check_nftw(const char* fpath, const struct stat* sb, int tflag, struct FTW* ftwbuf) {
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sanity_check_ftw(fpath, sb, tflag);
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ASSERT_EQ('/', fpath[ftwbuf->base - 1]) << fpath;
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}
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int check_ftw(const char* fpath, const struct stat* sb, int tflag) {
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sanity_check_ftw(fpath, sb, tflag);
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return 0;
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}
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int check_ftw64(const char* fpath, const struct stat64* sb, int tflag) {
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sanity_check_ftw(fpath, reinterpret_cast<const struct stat*>(sb), tflag);
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return 0;
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}
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int check_nftw(const char* fpath, const struct stat* sb, int tflag, struct FTW* ftwbuf) {
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sanity_check_nftw(fpath, sb, tflag, ftwbuf);
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return 0;
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}
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int check_nftw64(const char* fpath, const struct stat64* sb, int tflag, struct FTW* ftwbuf) {
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sanity_check_nftw(fpath, reinterpret_cast<const struct stat*>(sb), tflag, ftwbuf);
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return 0;
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}
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TEST(ftw, ftw) {
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TemporaryDir root;
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MakeTree(root.dirname);
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ASSERT_EQ(0, ftw(root.dirname, check_ftw, 128));
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}
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TEST(ftw, ftw64) {
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TemporaryDir root;
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MakeTree(root.dirname);
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ASSERT_EQ(0, ftw64(root.dirname, check_ftw64, 128));
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}
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TEST(ftw, nftw) {
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TemporaryDir root;
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MakeTree(root.dirname);
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ASSERT_EQ(0, nftw(root.dirname, check_nftw, 128, 0));
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}
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TEST(ftw, nftw64) {
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TemporaryDir root;
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MakeTree(root.dirname);
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ASSERT_EQ(0, nftw64(root.dirname, check_nftw64, 128, 0));
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}
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