talloc: add --enable-talloc-compat1 to build a compat library for talloc 1.x.x

metze

5 files changed, 89 insertions, 0 deletions

diff --git a/lib/talloc/Makefile.in b/lib/talloc/Makefile.in
index 8baa28baae..94f031a4bb 100644
--- a/lib/talloc/Makefile.in
+++ b/lib/talloc/Makefile.in
@@ -36,6 +36,8 @@ all:: showflags $(EXTRA_TARGETS)
 include $(tallocdir)/rules.mk
 include $(tallocdir)/talloc.mk
 
+@TALLOC_COMPAT1_MK@
+
 $(TALLOC_SOLIB): $(LIBOBJ)
 	$(SHLD) $(SHLD_FLAGS) -o $@ $(LIBOBJ) $(VERSIONSCRIPT) $(EXPORTSFILE) $(SONAMEFLAG)$(TALLOC_SONAME)
 
diff --git a/lib/talloc/compat/talloc_compat1.c b/lib/talloc/compat/talloc_compat1.c
new file mode 100644
index 0000000000..519e8c3a83
--- /dev/null
+++ b/lib/talloc/compat/talloc_compat1.c
@@ -0,0 +1,51 @@
+/*
+   Samba trivial allocation library - compat functions
+
+   Copyright (C) Stefan Metzmacher 2009
+
+     ** NOTE! The following LGPL license applies to the talloc
+     ** library. This does NOT imply that all of Samba is released
+     ** under the LGPL
+
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 3 of the License, or (at your option) any later version.
+
+   This library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with this library; if not, see <http://www.gnu.org/licenses/>.
+*/
+
+/*
+ * This file contains only function to build a
+ * compat talloc.so.1 library on top of talloc.so.2
+ */
+
+#include "replace.h"
+#include "talloc.h"
+
+void *_talloc_reference(const void *context, const void *ptr);
+void *_talloc_reference(const void *context, const void *ptr) {
+	return _talloc_reference_loc(context, ptr,
+				     "Called from talloc compat1 "
+				     "_talloc_reference");
+}
+
+void *_talloc_steal(const void *new_ctx, const void *ptr);
+void *_talloc_steal(const void *new_ctx, const void *ptr)
+{
+	return talloc_reparent(talloc_parent(ptr), new_ctx, ptr);
+}
+
+#undef talloc_free
+int talloc_free(void *ptr);
+int talloc_free(void *ptr)
+{
+	return talloc_unlink(talloc_parent(ptr), ptr);
+}
+
diff --git a/lib/talloc/compat/talloc_compat1.m4 b/lib/talloc/compat/talloc_compat1.m4
new file mode 100644
index 0000000000..2ec530e079
--- /dev/null
+++ b/lib/talloc/compat/talloc_compat1.m4
@@ -0,0 +1,14 @@
+TALLOC_COMPAT1_MK=""
+AC_SUBST(TALLOC_COMPAT1_MK)
+
+AC_ARG_ENABLE(talloc-compat1,
+	[AS_HELP_STRING([--enable-talloc-compat1],
+		[Build talloc 1.x.x compat library [default=no]])],
+	[ enable_talloc_compat1=$enableval ],
+	[ enable_talloc_compat1=no ]
+)
+
+if test "x$enable_talloc_compat1" = x"yes"; then
+	TALLOC_COMPAT1_MK='include $(tallocdir)/compat/talloc_compat1.mk'
+fi
+
diff --git a/lib/talloc/compat/talloc_compat1.mk b/lib/talloc/compat/talloc_compat1.mk
new file mode 100644
index 0000000000..d1817f0f71
--- /dev/null
+++ b/lib/talloc/compat/talloc_compat1.mk
@@ -0,0 +1,21 @@
+talloccompatdir := $(tallocdir)/compat
+
+TALLOC_COMPAT1_VERSION_MAJOR = 1
+TALLOC_COMPAT1_OBJ = $(talloccompatdir)/talloc_compat1.o
+
+TALLOC_COMPAT1_SOLIB = libtalloc-compat1-$(TALLOC_VERSION).$(SHLIBEXT)
+TALLOC_COMPAT1_SONAME = libtalloc.$(SHLIBEXT).$(TALLOC_COMPAT1_VERSION_MAJOR)
+
+$(TALLOC_COMPAT1_SOLIB): $(TALLOC_COMPAT1_OBJ) $(TALLOC_SOLIB)
+	$(SHLD) $(SHLD_FLAGS) -o $@ $(TALLOC_COMPAT1_OBJ) \
+		$(TALLOC_SOLIB) $(SONAMEFLAG)$(TALLOC_COMPAT1_SONAME)
+
+all:: $(TALLOC_COMPAT1_SOLIB)
+
+install::
+	${INSTALLCMD} -d $(DESTDIR)$(libdir)
+	${INSTALLCMD} -m 755 $(TALLOC_COMPAT1_SOLIB) $(DESTDIR)$(libdir)
+
+clean::
+	rm -f $(TALLOC_COMPAT1_OBJ) $(TALLOC_COMPAT1_SOLIB)
+
diff --git a/lib/talloc/configure.ac b/lib/talloc/configure.ac
index 49f396cf61..a169f79724 100644
--- a/lib/talloc/configure.ac
+++ b/lib/talloc/configure.ac
@@ -34,6 +34,7 @@ AC_LIBREPLACE_SHLD
 AC_LIBREPLACE_SHLD_FLAGS
 
 m4_include(libtalloc.m4)
+m4_include(compat/talloc_compat1.m4)
 
 AC_PATH_PROG(XSLTPROC,xsltproc)
 DOC_TARGET=""