Author: Ralph Sennhaser <sera@gentoo.org>

The idea is to apply the pax markings before using a freshly built jdk. Be it
for running tests or building additonal vms or after bootstrap to build the
final jdk.

There are currently two types of pax markings with the userspace utilities
chpax and paxctl. Both types of pax marking are base on modifing the ELFs. A
third type based on xattrs is in development.

diff --git a/Makefile.am b/Makefile.am
index 82ef261..e17fa5f 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -421,7 +421,7 @@ else
 ICEDTEA_PATCHES += patches/nss-not-enabled-config.patch
 endif
 
-if HAS_PAX
+if WITH_PAX
 ICEDTEA_PATCHES += patches/no-test_gamma.patch
 endif
 
@@ -450,7 +450,7 @@ ICEDTEA_ECJ_PATCHES += patches/ecj/cp40188-opengl.patch
 endif
 endif
 
-if !HAS_PAX
+if !WITH_PAX
 ICEDTEA_ECJ_PATCHES += patches/ecj/no-test_gamma.patch
 endif
 
@@ -1359,6 +1359,7 @@ stamps/icedtea.stamp: stamps/bootstrap-directory-symlink.stamp \
 	  $(ICEDTEA_ENV) \
 	  -C openjdk \
 	  $(ICEDTEA_BUILD_TARGET)
+	$(abs_top_builddir)/pax-mark-vm $(BUILD_OUTPUT_DIR)/j2sdk-image
 	mkdir -p $(BUILD_OUTPUT_DIR)/j2sdk-image/jre/lib/$(INSTALL_ARCH_DIR)
 	mkdir -p $(BUILD_OUTPUT_DIR)/j2re-image/lib/$(INSTALL_ARCH_DIR)
 	mkdir -p $(BUILD_OUTPUT_DIR)/j2sdk-image/jre/lib/ext
@@ -1586,6 +1587,7 @@ stamps/icedtea-ecj.stamp: stamps/bootstrap-directory-symlink-ecj.stamp \
 	  $(ICEDTEA_ENV_ECJ) \
 	  -C openjdk-ecj/ \
 	  $(ICEDTEA_BUILD_TARGET)
+	$(abs_top_builddir)/pax-mark-vm $(ECJ_BUILD_OUTPUT_DIR)/j2sdk-image
 	@echo "ecj-poured IcedTea is served:" \
 	  $(ECJ_BUILD_OUTPUT_DIR)
 	mkdir -p stamps
diff --git a/acinclude.m4 b/acinclude.m4
index 503131c..e80b209 100644
--- a/acinclude.m4
+++ b/acinclude.m4
@@ -1677,3 +1677,49 @@ AM_CONDITIONAL([CP39408_JAVAH], test x"${it_cv_cp39408_javah}" = "xyes")
 AM_CONDITIONAL([CP40188_JAVAH], test x"${it_cv_cp40188_javah}" = "xyes")
 AC_PROVIDE([$0])dnl
 ])
+
+AC_DEFUN_ONCE([IT_WITH_PAX],
+[
+  AC_MSG_CHECKING([for pax utility to use])
+  AC_ARG_WITH([pax],
+              [AS_HELP_STRING(--with-pax=COMMAND,the command used for pax marking)],
+  [
+    PAX_COMMAND=${withval}
+    if test "x${PAX_COMMAND}" = "xno"; then
+      PAX_COMMAND="not specified"
+    fi
+  ],
+  [ 
+    PAX_COMMAND="not specified"
+  ])
+  case "x${PAX_COMMAND}" in
+    xchpax)
+      case "${host_cpu}" in
+        i?86)
+          PAX_COMMAND_ARGS="-msp"
+          ;;
+        *)
+          PAX_COMMAND_ARGS="-m"
+          ;;
+      esac
+      ;;
+    xpaxctl)
+      case "${host_cpu}" in
+        i?86)
+          PAX_COMMAND_ARGS="-msp"
+          ;;
+        *)
+          PAX_COMMAND_ARGS="-m"
+          ;;
+      esac
+      ;;
+    *)
+      PAX_COMMAND="not specified"
+      PAX_COMMAND_ARGS="not specified"
+      ;;
+  esac
+  AM_CONDITIONAL(WITH_PAX, test "x${PAX_COMMAND}" != "xnot specified")
+  AC_MSG_RESULT(${PAX_COMMAND})
+  AC_SUBST(PAX_COMMAND)
+  AC_SUBST(PAX_COMMAND_ARGS)
+])
diff --git a/configure.ac b/configure.ac
index 580840e..f37ef68 100644
--- a/configure.ac
+++ b/configure.ac
@@ -51,7 +51,6 @@ IT_CHECK_GCC_VERSION
 IT_CHECK_NUMBER_OF_PARALLEL_JOBS
 IT_CP_SUPPORTS_REFLINK
 IT_CAN_HARDLINK_TO_SOURCE_TREE
-IT_CHECK_FOR_PAX
 IT_LOCATE_NSS
 
 # Use xvfb-run if found to run gui tests (check-jdk).
@@ -189,6 +188,9 @@ IT_WITH_TZDATA_DIR
 IT_GETDTDTYPE_CHECK
 IT_JAVAH
 
+IT_WITH_PAX
+AC_CONFIG_FILES([pax-mark-vm], [chmod +x pax-mark-vm])
+
 dnl pkgconfig cannot be used to find these headers and libraries.
 AC_CHECK_HEADERS([cups/cups.h cups/ppd.h],[]
 	,[AC_MSG_ERROR("CUPS headers were not found -
diff --git a/pax-mark-vm.in b/pax-mark-vm.in
new file mode 100644
index 0000000..bdff735
--- /dev/null
+++ b/pax-mark-vm.in
@@ -0,0 +1,13 @@
+#!/bin/sh
+
+# Taken from Gentoo's pax-utils.eclass
+list_paxables() {
+       file "$@" 2> /dev/null | grep -E 'ELF.*(executable|shared object)' | sed -e 's/: .*$//'
+}
+
+if test "@PAX_COMMAND@" != "not specified"; then
+       for paxable in `list_paxables "${1}"/bin/* "${1}"/jre/bin/*`; do
+               echo "PaX mark @PAX_COMMAND_ARGS@ ${paxable}"
+               @PAX_COMMAND@ @PAX_COMMAND_ARGS@ "${paxable}"
+       done
+fi