From: Christoph Hellwig <hch@infradead.org>
To: xfs@oss.sgi.com
Subject: [PATCH] libhandle: add symbol versioning
Date: Fri, 30 Oct 2009 09:12:13 -0400 [thread overview]
Message-ID: <20091030131213.GA18462@infradead.org> (raw)
Add symbol versioning for libhandle. For now version 1.0.3 contains all
pre-existing symbols, any new additions both needs a minor version bump
and an entry in libhandle.sym.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Index: xfsprogs-dev/libhandle/Makefile
===================================================================
--- xfsprogs-dev.orig/libhandle/Makefile 2009-10-30 13:00:51.000000000 +0000
+++ xfsprogs-dev/libhandle/Makefile 2009-10-30 13:09:43.000000000 +0000
@@ -10,7 +10,10 @@ LT_CURRENT = 1
LT_REVISION = 3
LT_AGE = 0
+LTLDFLAGS += -Wl,--version-script,libhandle.sym
+
CFILES = handle.c jdm.c
+LSRCFILES = libhandle.sym
default: $(LTLIBRARY)
Index: xfsprogs-dev/libhandle/libhandle.sym
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ xfsprogs-dev/libhandle/libhandle.sym 2009-10-30 13:00:45.000000000 +0000
@@ -0,0 +1,36 @@
+/*
+ * The symbol versioning ensures that a new application requiring symbol foo()
+ * can't run with old libhandle.so not providing foo() - the global SONAME
+ * version info can't enforce this since we never change the SONAME.
+ *
+ * Older versions of libhandle (<= 1.0.3) do not to use symbol versioning --
+ * all the original symbols are in LIBHANDLE_1.0.3 now.
+ */
+
+LIBHANDLE_1.0.3 {
+global:
+ /* handle.h APIs */
+ path_to_handle;
+ path_to_fshandle;
+ handle_to_fshandle;
+ free_handle;
+ open_by_fshandle;
+ open_by_handle;
+ readlink_by_handle;
+ attr_multi_by_handle;
+ attr_list_by_handle;
+ parents_by_handle;
+ parentpaths_by_handle;
+ fssetdm_by_handle;
+
+ /* jdm.h APIs */
+ jdm_getfshandle;
+ jdm_new_filehandle;
+ jdm_delete_filehandle;
+ jdm_open;
+ jdm_readlink;
+ jdm_attr_multi;
+ jdm_attr_list;
+ jdm_parents;
+ jdm_parentpaths;
+};
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next reply other threads:[~2009-10-30 13:12 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-10-30 13:12 Christoph Hellwig [this message]
2009-11-19 4:34 ` [PATCH] libhandle: add symbol versioning Eric Sandeen
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