util: error: Export virErrorMsg for use in testsuite

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>

src/libvirt_private.syms

@@ -1752,6 +1752,7 @@ ebtablesRemoveForwardAllowIn;
 virDispatchError;
 virErrorCopyNew;
 virErrorInitialize;
+virErrorMsg;
 virErrorPreserveLast;
 virErrorRestore;
 virErrorSetErrnoFromLastError;

src/util/Makefile.inc.am

@@ -50,6 +50,7 @@ UTIL_SOURCES = \
 	util/virendian.h \
 	util/virerror.c \
 	util/virerror.h \
+	util/virerrorpriv.h \
 	util/virevent.c \
 	util/virevent.h \
 	util/vireventpoll.c \

src/util/virerror.c

@@ -29,6 +29,10 @@
 #include "virutil.h"
 #include "virstring.h"
 
+#define LIBVIRT_VIRERRORPRIV_H_ALLOW
+#include "virerrorpriv.h"
+#undef LIBVIRT_VIRERRORPRIV_H_ALLOW
+
 VIR_LOG_INIT("util.error");
 
 virThreadLocal virLastErr;
@@ -908,7 +912,7 @@ void virRaiseErrorObject(const char *filename,
  *
  * Returns the constant string associated to @error
  */
-static const char *
+const char *
 virErrorMsg(virErrorNumber error, const char *info)
 {
     const char *errmsg = NULL;

src/util/virerrorpriv.h

@@ -0,0 +1,28 @@
+/*
+ * 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 2.1 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/>.
+ */
+
+#ifndef LIBVIRT_VIRERRORPRIV_H_ALLOW
+# error "virerrorpriv.h may only be included by virerror.c or its test suite"
+#endif /* LIBVIRT_VIRERRORPRIV_H_ALLOW */
+
+#ifndef LIBVIRT_VIRERRORPRIV_H
+# define LIBVIRT_VIRERRORPRIV_H
+
+const char *
+virErrorMsg(virErrorNumber error,
+            const char *info);
+
+#endif /* LIBVIRT_VIRERRORPRIV_H */