diff options
Diffstat (limited to 'test/syscalls/linux/mount.cc')
| -rw-r--r-- | test/syscalls/linux/mount.cc | 38 |
1 files changed, 24 insertions, 14 deletions
diff --git a/test/syscalls/linux/mount.cc b/test/syscalls/linux/mount.cc index 3aab25b23..d65b7d031 100644 --- a/test/syscalls/linux/mount.cc +++ b/test/syscalls/linux/mount.cc @@ -34,6 +34,7 @@ #include "test/util/mount_util.h" #include "test/util/multiprocess_util.h" #include "test/util/posix_error.h" +#include "test/util/save_util.h" #include "test/util/temp_path.h" #include "test/util/test_util.h" #include "test/util/thread_util.h" @@ -131,7 +132,9 @@ TEST(MountTest, UmountDetach) { ASSERT_NO_ERRNO_AND_VALUE(Mount("", dir.path(), "tmpfs", 0, "mode=0700", /* umountflags= */ MNT_DETACH)); const struct stat after = ASSERT_NO_ERRNO_AND_VALUE(Stat(dir.path())); - EXPECT_NE(before.st_ino, after.st_ino); + EXPECT_FALSE(before.st_dev == after.st_dev && before.st_ino == after.st_ino) + << "mount point has device number " << before.st_dev + << " and inode number " << before.st_ino << " before and after mount"; // Create files in the new mount. constexpr char kContents[] = "no no no"; @@ -147,12 +150,14 @@ TEST(MountTest, UmountDetach) { // Unmount the tmpfs. mount.Release()(); - // 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()))) { + // Inode numbers for gofer-accessed files may change across save/restore. + // + // For 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 (!IsRunningWithSaveRestore() && + !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); } @@ -214,18 +219,23 @@ TEST(MountTest, MountTmpfs) { const struct stat s = ASSERT_NO_ERRNO_AND_VALUE(Stat(dir.path())); EXPECT_EQ(s.st_mode, S_IFDIR | 0700); - EXPECT_NE(s.st_ino, before.st_ino); + EXPECT_FALSE(before.st_dev == s.st_dev && before.st_ino == s.st_ino) + << "mount point has device number " << before.st_dev + << " and inode number " << before.st_ino << " before and after mount"; EXPECT_NO_ERRNO(Open(JoinPath(dir.path(), "foo"), O_CREAT | O_RDWR, 0777)); } // Now that dir is unmounted again, we should have the old inode back. - // 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()))) { + // + // Inode numbers for gofer-accessed files may change across save/restore. + // + // For 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 (!IsRunningWithSaveRestore() && + !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); } |