tests: avoid false failures with default ACLs

To reproduce:
  setfacl -dm group::rx .
  setfacl -dm other::rx .
  make check

* init.cfg (require_no_default_acl_): A new function to skip
when default ACLs are detected, or if the getfacl utility is
not available then skip if any non LSM ACLs detected.
* tests/cp/existing-perm-race.sh: Call require_no_default_acl_.
* tests/mkdir/parents.sh: Likewise.
* tests/mkdir/perm.sh: Likewise.

init.cfg

@@ -60,6 +60,15 @@ getlimits_()
   test "$INT_MAX" || fatal_ "running getlimits"
 }
 
+require_no_default_acl_()
+{
+  if getfacl --version < /dev/null > /dev/null 2>&1; then
+    getfacl "$1" | grep '^default:' && skip_ 'Default ACL detected'
+  else
+    ls -ld "$1" | grep '.........+' && skip_ 'ACL detected'
+  fi
+}
+
 require_acl_()
 {
   getfacl --version < /dev/null > /dev/null 2>&1 \

tests/cp/existing-perm-race.sh

@@ -24,6 +24,8 @@ require_membership_in_two_groups_
 # cp -p gives ENOTSUP on NFS on Linux 2.6.9 at least
 require_local_dir_
 
+require_no_default_acl_ .
+
 set _ $groups; shift
 g1=$1
 g2=$2

tests/mkdir/parents.sh

@@ -19,6 +19,7 @@
 . "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
 print_ver_ mkdir
 skip_if_setgid_
+require_no_default_acl_ .
 
 mkdir -m 700 e-dir || framework_failure_
 

tests/mkdir/perm.sh

@@ -20,6 +20,7 @@
 . "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
 print_ver_ mkdir
 skip_if_setgid_
+require_no_default_acl_ .
 
 working_umask_or_skip_