glibcompat: Reimplement g_strdup_printf() and g_strdup_vprintf()

These functions don't really abort() on OOM. The fix was merged
upstream, but not in the minimal version we require. Provide our
own implementation which can be removed once we bump the minimal
version.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>

diff --git a/src/internal.h b/src/internal.h
index fb17b87baac0a1cdace7f234aaddd8895da514f9..5b0a2335f53a781d027340ebd9efceea8c8cb98e 100644 (file)
--- a/src/internal.h
+++ b/src/internal.h
@@ -64,6 +64,7 @@
 #include "libvirt/virterror.h"
 
 #include "c-strcase.h"
+#include "glibcompat.h"
 
 /* Merely casting to (void) is not sufficient since the
  * introduction of the "warn_unused_result" attribute

diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
index 0da02bb8bd71d4685da60b67c433e3ad4146d0c5..206295bef079309dbf699268e4f376eb6901d33b 100644 (file)
--- a/src/libvirt_private.syms
+++ b/src/libvirt_private.syms
@@ -1485,6 +1485,11 @@ virSecurityManagerTransactionStart;
 virSecurityManagerVerify;
 
 
+# util/glibcompat.h
+vir_g_strdup_printf;
+vir_g_strdup_vprintf;
+
+
 # util/viralloc.h
 virAlloc;
 virAllocN;

diff --git a/src/util/Makefile.inc.am b/src/util/Makefile.inc.am
index 705b93c93c6287fd54d0afde86760f2fdef240b3..d8c8e61c4b8b9a9447f20efe9104222a7ed0071e 100644 (file)
--- a/src/util/Makefile.inc.am
+++ b/src/util/Makefile.inc.am
@@ -3,6 +3,8 @@
 # These files are not related to driver APIs. Simply generic
 # helper APIs for various purposes
 UTIL_SOURCES = \
+       util/glibcompat.c \
+       util/glibcompat.h \
        util/viralloc.c \
        util/viralloc.h \
        util/virarch.c \

diff --git a/src/util/glibcompat.c b/src/util/glibcompat.c
new file mode 100644 (file)
index 0000000..25dedf0
--- /dev/null
+++ b/src/util/glibcompat.c
@@ -0,0 +1,51 @@
+/*
+ * Copyright (C) 2019 Red Hat, Inc.
+ *
+ * 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/>.
+ */
+
+#include <config.h>
+
+#include "glibcompat.h"
+
+#undef g_strdup_printf
+#undef g_strdup_vprintf
+
+/* Due to a bug in glib, g_strdup_printf() nor g_strdup_vprintf()
+ * abort on OOM.  It's fixed in glib's upstream. Provide our own
+ * implementation until the fix gets distributed. */
+char *
+vir_g_strdup_printf(const char *msg, ...)
+{
+  va_list args;
+  char *ret;
+  va_start(args, msg);
+  ret = g_strdup_vprintf(msg, args);
+  if (!ret)
+    abort();
+  va_end(args);
+  return ret;
+}
+
+
+char *
+vir_g_strdup_vprintf(const char *msg, va_list args)
+{
+  char *ret;
+  ret = g_strdup_vprintf(msg, args);
+  if (!ret)
+    abort();
+  return ret;
+}

diff --git a/src/util/glibcompat.h b/src/util/glibcompat.h
new file mode 100644 (file)
index 0000000..9c5fef0
--- /dev/null
+++ b/src/util/glibcompat.h
@@ -0,0 +1,31 @@
+/*
+ * Copyright (C) 2019 Red Hat, Inc.
+ *
+ * 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/>.
+ */
+
+#pragma once
+
+#include <glib.h>
+
+char *vir_g_strdup_printf(const char *msg, ...)
+    G_GNUC_PRINTF(1, 2);
+char *vir_g_strdup_vprintf(const char *msg, va_list args)
+    G_GNUC_PRINTF(1, 0);
+
+#if !GLIB_CHECK_VERSION(2, 64, 0)
+# define g_strdup_printf vir_g_strdup_printf
+# define g_strdup_vprintf vir_g_strdup_vprintf
+#endif