diff options
Diffstat (limited to 'test/syscalls/linux/mount.cc')
| -rw-r--r-- | test/syscalls/linux/mount.cc | 22 |
1 files changed, 18 insertions, 4 deletions
diff --git a/test/syscalls/linux/mount.cc b/test/syscalls/linux/mount.cc index 46b6f38db..3aab25b23 100644 --- a/test/syscalls/linux/mount.cc +++ b/test/syscalls/linux/mount.cc @@ -147,8 +147,15 @@ TEST(MountTest, UmountDetach) { // Unmount the tmpfs. mount.Release()(); - const struct stat after2 = ASSERT_NO_ERRNO_AND_VALUE(Stat(dir.path())); - EXPECT_EQ(before.st_ino, after2.st_ino); + // Only check for inode number equality if the directory is not in overlayfs. + // If xino option is not enabled and if all overlayfs layers do not belong to + // the same filesystem then "the value of st_ino for directory objects may not + // be persistent and could change even while the overlay filesystem is + // mounted." -- Documentation/filesystems/overlayfs.txt + if (!ASSERT_NO_ERRNO_AND_VALUE(IsOverlayfs(dir.path()))) { + const struct stat after2 = ASSERT_NO_ERRNO_AND_VALUE(Stat(dir.path())); + EXPECT_EQ(before.st_ino, after2.st_ino); + } // Can still read file after unmounting. std::vector<char> buf(sizeof(kContents)); @@ -213,8 +220,15 @@ TEST(MountTest, MountTmpfs) { } // Now that dir is unmounted again, we should have the old inode back. - const struct stat after = ASSERT_NO_ERRNO_AND_VALUE(Stat(dir.path())); - EXPECT_EQ(before.st_ino, after.st_ino); + // Only check for inode number equality if the directory is not in overlayfs. + // If xino option is not enabled and if all overlayfs layers do not belong to + // the same filesystem then "the value of st_ino for directory objects may not + // be persistent and could change even while the overlay filesystem is + // mounted." -- Documentation/filesystems/overlayfs.txt + if (!ASSERT_NO_ERRNO_AND_VALUE(IsOverlayfs(dir.path()))) { + const struct stat after = ASSERT_NO_ERRNO_AND_VALUE(Stat(dir.path())); + EXPECT_EQ(before.st_ino, after.st_ino); + } } TEST(MountTest, MountTmpfsMagicValIgnored) { |