From c82ecd6656840e26afa60c8565bb9acaa67c5e6e Mon Sep 17 00:00:00 2001
From: Dave Wysochanski <dwysocha@redhat.com>
Date: Tue, 28 Jul 2009 11:03:28 +0000
Subject: [PATCH] Add lvm_library_get_version() and update unit tests to
 display version.

---
 liblvm/.exported_symbols |  1 +
 liblvm/lvm.h             | 14 ++++++++++++++
 liblvm/lvm_base.c        |  5 +++++
 test/api/test.c          |  1 +
 test/api/vgtest.c        |  1 +
 5 files changed, 22 insertions(+)

diff --git a/liblvm/.exported_symbols b/liblvm/.exported_symbols
index f6307754f..452b676a3 100644
--- a/liblvm/.exported_symbols
+++ b/liblvm/.exported_symbols
@@ -1,3 +1,4 @@
+lvm_library_get_version
 lvm_init
 lvm_quit
 lvm_config_reload
diff --git a/liblvm/lvm.h b/liblvm/lvm.h
index 7476b5424..7da8cc5a2 100644
--- a/liblvm/lvm.h
+++ b/liblvm/lvm.h
@@ -28,6 +28,20 @@
  */
 /******************************** WARNING ********************************/
 
+/**
+ * Retrieve the library version.
+ *
+ * The library version is the same format as the full LVM version.
+ * The format is as follows:
+ *    LVM_MAJOR.LVM_MINOR.LVM_PATCHLEVEL(LVM_LIBAPI)[-LVM_RELEASE]
+ * An application wishing to determine compatibility with a particular version
+ * of the library should check at least the LVM_MAJOR, LVM_MINOR, and
+ * LVM_LIBAPI numbers.  For example, assume the full LVM version is
+ * 2.02.50(1)-1.  The application should verify the "2.02" and the "(1)".
+ *
+ * \return  A string describing the library version.
+ */
+const char *lvm_library_get_version(void);
 
 /******************************** structures ********************************/
 
diff --git a/liblvm/lvm_base.c b/liblvm/lvm_base.c
index b8cd385e9..a6afe1003 100644
--- a/liblvm/lvm_base.c
+++ b/liblvm/lvm_base.c
@@ -17,6 +17,11 @@
 #include "toolcontext.h"
 #include "locking.h"
 
+const char *lvm_library_get_version(void)
+{
+	return LVM_VERSION;
+}
+
 lvm_t lvm_init(const char *system_dir)
 {
 	struct cmd_context *cmd;
diff --git a/test/api/test.c b/test/api/test.c
index 144c59507..95e1b0b19 100644
--- a/test/api/test.c
+++ b/test/api/test.c
@@ -607,6 +607,7 @@ int main (int argc, char *argv[])
 		return 1;
 	}
 
+	printf("Library version: %s\n", lvm_library_get_version());
 	lvmapi_test_shell(libh);
 
 	lvm_quit(libh);
diff --git a/test/api/vgtest.c b/test/api/vgtest.c
index 4df185ed6..96495a5d4 100644
--- a/test/api/vgtest.c
+++ b/test/api/vgtest.c
@@ -96,6 +96,7 @@ int main(int argc, char *argv[])
 		goto bad;
 	}
 
+	printf("Library version: %s\n", lvm_library_get_version());
 	vg_create(vg_name);
 	vg_extend(vg, device);
 
-- 
2.43.5