1 files changed, 44 insertions, 0 deletions

diff --git a/lib/kasprintf.c b/lib/kasprintf.c
new file mode 100644
index 000000000000..c5ff1fd10030
--- /dev/null
+++ b/lib/kasprintf.c
@@ -0,0 +1,44 @@
+/*
+ *  linux/lib/kasprintf.c
+ *
+ *  Copyright (C) 1991, 1992  Linus Torvalds
+ */
+
+#include <stdarg.h>
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/string.h>
+
+/* Simplified asprintf. */
+char *kvasprintf(gfp_t gfp, const char *fmt, va_list ap)
+{
+        unsigned int len;
+        char *p;
+        va_list aq;
+
+        va_copy(aq, ap);
+        len = vsnprintf(NULL, 0, fmt, aq);
+        va_end(aq);
+
+        p = kmalloc(len+1, gfp);
+        if (!p)
+                return NULL;
+
+        vsnprintf(p, len+1, fmt, ap);
+
+        return p;
+}
+EXPORT_SYMBOL(kvasprintf);
+
+char *kasprintf(gfp_t gfp, const char *fmt, ...)
+{
+        va_list ap;
+        char *p;
+
+        va_start(ap, fmt);
+        p = kvasprintf(gfp, fmt, ap);
+        va_end(ap);
+
+        return p;
+}
+EXPORT_SYMBOL(kasprintf);