1 /*
2 * Copyright (C) 2013 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 <gtest/gtest.h>
18
19 #include <sys/statvfs.h>
20
21 #include <sys/types.h>
22 #include <sys/stat.h>
23 #include <fcntl.h>
24
25 #include <string>
26
Check(StatVfsT & sb)27 template <typename StatVfsT> void Check(StatVfsT& sb) {
28 EXPECT_EQ(getpagesize(), static_cast<int>(sb.f_bsize));
29 EXPECT_EQ(0U, sb.f_bfree);
30 EXPECT_EQ(0U, sb.f_ffree);
31 EXPECT_EQ(255U, sb.f_namemax);
32
33 // Linux 6.7 requires that all filesystems have a non-zero fsid.
34 if (sb.f_fsid != 0U) {
35 // fs/libfs.c reuses the filesystem's device number.
36 struct stat proc_sb;
37 ASSERT_EQ(0, stat("/proc", &proc_sb));
38 EXPECT_EQ(proc_sb.st_dev, sb.f_fsid);
39 } else {
40 // Prior to that, the fsid for /proc was just 0.
41 EXPECT_EQ(0U, sb.f_fsid);
42 }
43
44 // The kernel sets a private bit to indicate that f_flags is valid.
45 // This flag is not supposed to be exposed to libc clients.
46 static const uint32_t ST_VALID = 0x0020;
47 EXPECT_TRUE((sb.f_flag & ST_VALID) == 0) << sb.f_flag;
48 }
49
TEST(sys_statvfs,statvfs)50 TEST(sys_statvfs, statvfs) {
51 struct statvfs sb;
52 ASSERT_EQ(0, statvfs("/proc", &sb));
53 Check(sb);
54 }
55
TEST(sys_statvfs,statvfs64_smoke)56 TEST(sys_statvfs, statvfs64_smoke) {
57 struct statvfs64 sb;
58 ASSERT_EQ(0, statvfs64("/proc", &sb));
59 Check(sb);
60 }
61
TEST(sys_statvfs,fstatvfs)62 TEST(sys_statvfs, fstatvfs) {
63 struct statvfs sb;
64 int fd = open("/proc", O_RDONLY);
65 ASSERT_EQ(0, fstatvfs(fd, &sb));
66 close(fd);
67 Check(sb);
68 }
69
TEST(sys_statvfs,fstatvfs64_smoke)70 TEST(sys_statvfs, fstatvfs64_smoke) {
71 struct statvfs64 sb;
72 int fd = open("/proc", O_RDONLY);
73 ASSERT_EQ(0, fstatvfs64(fd, &sb));
74 close(fd);
75 Check(sb);
76 }
77