1/*
2 * Copyright (C) 2014 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#include <ftw.h>
18
19#include <stdio.h>
20#include <stdlib.h>
21#include <sys/stat.h>
22#include <sys/types.h>
23#include <unistd.h>
24
25#include "TemporaryFile.h"
26
27#include <gtest/gtest.h>
28
29static void MakeTree(const char* root) {
30  char path[PATH_MAX];
31
32  snprintf(path, sizeof(path), "%s/dir", root);
33  ASSERT_EQ(0, mkdir(path, 0755)) << path;
34  snprintf(path, sizeof(path), "%s/dir/sub", root);
35  ASSERT_EQ(0, mkdir(path, 0555)) << path;
36  snprintf(path, sizeof(path), "%s/unreadable-dir", root);
37  ASSERT_EQ(0, mkdir(path, 0000)) << path;
38
39  snprintf(path, sizeof(path), "%s/dangler", root);
40  ASSERT_EQ(0, symlink("/does-not-exist", path));
41  snprintf(path, sizeof(path), "%s/symlink", root);
42  ASSERT_EQ(0, symlink("sub2", path));
43
44  int fd;
45  snprintf(path, sizeof(path), "%s/regular", root);
46  ASSERT_NE(-1, fd = open(path, O_CREAT|O_TRUNC, 0666));
47  ASSERT_EQ(0, close(fd));
48}
49
50void sanity_check_ftw(const char* fpath, const struct stat* sb, int tflag) {
51  ASSERT_TRUE(fpath != NULL);
52  ASSERT_TRUE(sb != NULL);
53
54  if (S_ISDIR(sb->st_mode)) {
55    EXPECT_TRUE(tflag == FTW_D || tflag == FTW_DNR || tflag == FTW_DP) << fpath;
56  } else if (S_ISLNK(sb->st_mode)) {
57    EXPECT_EQ(FTW_SL, tflag) << fpath;
58  } else {
59    EXPECT_EQ(FTW_F, tflag) << fpath;
60  }
61}
62
63void sanity_check_nftw(const char* fpath, const struct stat* sb, int tflag, struct FTW* ftwbuf) {
64  sanity_check_ftw(fpath, sb, tflag);
65  ASSERT_EQ('/', fpath[ftwbuf->base - 1]) << fpath;
66}
67
68int check_ftw(const char* fpath, const struct stat* sb, int tflag) {
69  sanity_check_ftw(fpath, sb, tflag);
70  return 0;
71}
72
73int check_ftw64(const char* fpath, const struct stat64* sb, int tflag) {
74  sanity_check_ftw(fpath, reinterpret_cast<const struct stat*>(sb), tflag);
75  return 0;
76}
77
78int check_nftw(const char* fpath, const struct stat* sb, int tflag, struct FTW* ftwbuf) {
79  sanity_check_nftw(fpath, sb, tflag, ftwbuf);
80  return 0;
81}
82
83int check_nftw64(const char* fpath, const struct stat64* sb, int tflag, struct FTW* ftwbuf) {
84  sanity_check_nftw(fpath, reinterpret_cast<const struct stat*>(sb), tflag, ftwbuf);
85  return 0;
86}
87
88TEST(ftw, ftw) {
89  TemporaryDir root;
90  MakeTree(root.dirname);
91  ASSERT_EQ(0, ftw(root.dirname, check_ftw, 128));
92}
93
94TEST(ftw, ftw64) {
95  TemporaryDir root;
96  MakeTree(root.dirname);
97  ASSERT_EQ(0, ftw64(root.dirname, check_ftw64, 128));
98}
99
100TEST(ftw, nftw) {
101  TemporaryDir root;
102  MakeTree(root.dirname);
103  ASSERT_EQ(0, nftw(root.dirname, check_nftw, 128, 0));
104}
105
106TEST(ftw, nftw64) {
107  TemporaryDir root;
108  MakeTree(root.dirname);
109  ASSERT_EQ(0, nftw64(root.dirname, check_nftw64, 128, 0));
110}
111