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-rw-r--r--lib/kasprintf.c45
1 files changed, 45 insertions, 0 deletions
diff --git a/lib/kasprintf.c b/lib/kasprintf.c
new file mode 100644
index 000000000..32f12150f
--- /dev/null
+++ b/lib/kasprintf.c
@@ -0,0 +1,45 @@
+/*
+ * linux/lib/kasprintf.c
+ *
+ * Copyright (C) 1991, 1992 Linus Torvalds
+ */
+
+#include <stdarg.h>
+#include <linux/export.h>
+#include <linux/slab.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_track_caller(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);