297e7dd30f
The optional block size for the /proc filesystem is set to page size. The tests must reflect the same. Bug: 315510913 Change-Id: Ifccf833829b4ea4ff9c7d375208124cdc43af04a
76 lines
2 KiB
C++
76 lines
2 KiB
C++
/*
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* Copyright (C) 2013 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 <gtest/gtest.h>
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#include <sys/statvfs.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <string>
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template <typename StatVfsT> void Check(StatVfsT& sb) {
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EXPECT_EQ(getpagesize(), static_cast<int>(sb.f_bsize));
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EXPECT_EQ(0U, sb.f_bfree);
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EXPECT_EQ(0U, sb.f_ffree);
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EXPECT_EQ(255U, sb.f_namemax);
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// Linux 6.7 requires that all filesystems have a non-zero fsid.
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if (sb.f_fsid != 0U) {
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// fs/libfs.c reuses the filesystem's device number.
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struct stat proc_sb;
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ASSERT_EQ(0, stat("/proc", &proc_sb));
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EXPECT_EQ(proc_sb.st_dev, sb.f_fsid);
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} else {
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// Prior to that, the fsid for /proc was just 0.
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EXPECT_EQ(0U, sb.f_fsid);
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}
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// The kernel sets a private bit to indicate that f_flags is valid.
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// This flag is not supposed to be exposed to libc clients.
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static const uint32_t ST_VALID = 0x0020;
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EXPECT_TRUE((sb.f_flag & ST_VALID) == 0) << sb.f_flag;
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}
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TEST(sys_statvfs, statvfs) {
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struct statvfs sb;
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ASSERT_EQ(0, statvfs("/proc", &sb));
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Check(sb);
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}
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TEST(sys_statvfs, statvfs64_smoke) {
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struct statvfs64 sb;
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ASSERT_EQ(0, statvfs64("/proc", &sb));
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Check(sb);
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}
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TEST(sys_statvfs, fstatvfs) {
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struct statvfs sb;
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int fd = open("/proc", O_RDONLY);
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ASSERT_EQ(0, fstatvfs(fd, &sb));
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close(fd);
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Check(sb);
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}
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TEST(sys_statvfs, fstatvfs64_smoke) {
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struct statvfs64 sb;
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int fd = open("/proc", O_RDONLY);
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ASSERT_EQ(0, fstatvfs64(fd, &sb));
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close(fd);
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Check(sb);
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}
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