xfuncs: add xasprintf() and xvasprintf()

Signed-off-by: Michael Olbrich <m.olbrich@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

1 files changed, 24 insertions, 0 deletions

diff --git a/lib/xfuncs.c b/lib/xfuncs.c
index f0219c43a5..6111f6d1c7 100644
--- a/lib/xfuncs.c
+++ b/lib/xfuncs.c
@@ -103,3 +103,27 @@ void *xmemdup(const void *orig, size_t size)
 	return buf;
 }
 EXPORT_SYMBOL(xmemdup);
+
+char *xvasprintf(const char *fmt, va_list ap)
+{
+	char *p;
+
+	p = vasprintf(fmt, ap);
+	if (!p)
+		panic("ERROR: out of memory\n");
+	return p;
+}
+EXPORT_SYMBOL(xvasprintf);
+
+char *xasprintf(const char *fmt, ...)
+{
+	va_list ap;
+	char *p;
+
+	va_start(ap, fmt);
+	p = xvasprintf(fmt, ap);
+	va_end(ap);
+
+	return p;
+}
+EXPORT_SYMBOL(xasprintf);