common/attr: fix the _require_acl test

_require_acl tests whether you're able to fetch the ACL from a file
using chacl, and then tests for an -EOPNOTSUPP error return.
Unfortunately, filesystems that don't support them (like NFSv4) just
return -ENODATA when someone calls getxattr for the POSIX ACL, so the
test doesn't work.

Fix the test to have chacl set an ACL on the file instead, which should
reliably fail on filesystems that don't support them.

Signed-off-by: Jeff Layton <jlayton@kernel.org>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Zorro Lang <zlang@kernel.org>

diff --git a/common/attr b/common/attr
index cce4d1b201b2790a8cf2250b234ddfe16634c5e4..3ebba682c894f6f85f12189f675c61c5ec24e45f 100644 (file)
--- a/common/attr
+++ b/common/attr
@@ -163,13 +163,12 @@ _require_acls()
     [ -n "$CHACL_PROG" ] || _notrun "chacl command not found"
 
     #
-    # Test if chacl is able to list ACLs on the target filesystems.  On really
-    # old kernels the system calls might not be implemented at all, but the
-    # more common case is that the tested filesystem simply doesn't support
-    # ACLs.
+    # Test if chacl is able to set an ACL on a file.  On really old kernels
+    # the system calls might not be implemented at all, but the more common
+    # case is that the tested filesystem simply doesn't support ACLs.
     #
     touch $TEST_DIR/syscalltest
-    chacl -l $TEST_DIR/syscalltest > $TEST_DIR/syscalltest.out 2>&1
+    chacl 'u::rw-,g::---,o::---' $TEST_DIR/syscalltest > $TEST_DIR/syscalltest.out 2>&1
     cat $TEST_DIR/syscalltest.out >> $seqres.full
 
     if grep -q 'Function not implemented' $TEST_DIR/syscalltest.out; then