[PATCH] generic/398: remove workarounds for wrong error codes

[Eric Biggers <ebiggers@kernel.org>]

From: Eric Biggers <ebiggers@google.com>

generic/398 contains workarounds to allow for renames of encrypted files
to fail with different error codes.  However, these error codes were
fixed up by kernel commits f5e55e777cc9 ("fscrypt: return -EXDEV for
incompatible rename or link into encrypted dir") and 0c1ad5242d4f
("ubifs: switch to fscrypt_prepare_rename()").

It's been long enough, so update the test to expect the correct behavior
only, so we don't accidentally reintroduce the wrong behavior.

Signed-off-by: Eric Biggers <ebiggers@google.com>
---
 tests/generic/398 | 35 +++++++++--------------------------
 1 file changed, 9 insertions(+), 26 deletions(-)

diff --git a/tests/generic/398 b/tests/generic/398
index fcc6e704..3046c398 100755
--- a/tests/generic/398
+++ b/tests/generic/398
@@ -26,23 +26,6 @@ _cleanup()
 	rm -f $tmp.*
 }
 
-# The error code for incompatible rename or link into an encrypted directory was
-# changed from EPERM to EXDEV in Linux v5.1, to allow tools like 'mv' to work.
-# See kernel commit f5e55e777cc9 ("fscrypt: return -EXDEV for incompatible
-# rename or link into encrypted dir").  Accept both errors for now.
-filter_eperm_to_exdev()
-{
-	sed -e 's/Operation not permitted/Invalid cross-device link/'
-}
-
-# The error code for incompatible cross-rename without the key has been ENOKEY
-# on all filesystems since Linux v4.16.  Previously it was EPERM on some
-# filesystems.  Accept both errors for now.
-filter_eperm_to_enokey()
-{
-	sed -e 's/Operation not permitted/Required key not available/'
-}
-
 # get standard environment, filters and checks
 . ./common/rc
 . ./common/filter
@@ -80,20 +63,20 @@ touch $udir/ufile
 # different encryption policy.  Should fail with EXDEV.
 
 echo -e "\n*** Link encrypted <= encrypted ***"
-ln $edir1/efile1 $edir2/efile1 |& _filter_scratch | filter_eperm_to_exdev
+ln $edir1/efile1 $edir2/efile1 |& _filter_scratch
 
 echo -e "\n*** Rename encrypted => encrypted ***"
-$here/src/renameat2 $edir1/efile1 $edir2/efile1 |& filter_eperm_to_exdev
+$here/src/renameat2 $edir1/efile1 $edir2/efile1
 
 
 # Test linking and renaming an unencrypted file into an encrypted directory.
 # Should fail with EXDEV.
 
 echo -e "\n\n*** Link unencrypted <= encrypted ***"
-ln $udir/ufile $edir1/ufile |& _filter_scratch | filter_eperm_to_exdev
+ln $udir/ufile $edir1/ufile |& _filter_scratch
 
 echo -e "\n*** Rename unencrypted => encrypted ***"
-$here/src/renameat2 $udir/ufile $edir1/ufile |& filter_eperm_to_exdev
+$here/src/renameat2 $udir/ufile $edir1/ufile
 
 
 # Test linking and renaming an encrypted file into an unencrypted directory.
@@ -113,13 +96,13 @@ $here/src/renameat2 $udir/efile1 $edir1/efile1 # undo
 # rename) operation.  Should fail with EXDEV.
 
 echo -e "\n\n*** Exchange encrypted <=> encrypted ***"
-$here/src/renameat2 -x $edir1/efile1 $edir2/efile2 |& filter_eperm_to_exdev
+$here/src/renameat2 -x $edir1/efile1 $edir2/efile2
 
 echo -e "\n*** Exchange unencrypted <=> encrypted ***"
-$here/src/renameat2 -x $udir/ufile $edir1/efile1 |& filter_eperm_to_exdev
+$here/src/renameat2 -x $udir/ufile $edir1/efile1
 
 echo -e "\n*** Exchange encrypted <=> unencrypted ***"
-$here/src/renameat2 -x $edir1/efile1 $udir/ufile |& filter_eperm_to_exdev
+$here/src/renameat2 -x $edir1/efile1 $udir/ufile
 
 
 # Test a file with a special type, i.e. not regular, directory, or symlink.
@@ -147,9 +130,9 @@ efile1=$(find $edir1 -type f)
 efile2=$(find $edir2 -type f)
 
 echo -e "\n\n*** Exchange encrypted <=> encrypted without key ***"
-$here/src/renameat2 -x $efile1 $efile2 |& filter_eperm_to_enokey
+$here/src/renameat2 -x $efile1 $efile2
 echo -e "\n*** Exchange encrypted <=> unencrypted without key ***"
-$here/src/renameat2 -x $efile1 $udir/ufile |& filter_eperm_to_enokey
+$here/src/renameat2 -x $efile1 $udir/ufile
 
 # success, all done
 status=0
-- 
2.29.1