1/*
2 *  linux/lib/kasprintf.c
3 *
4 *  Copyright (C) 1991, 1992  Linus Torvalds
5 */
6
7#include <stdarg.h>
8#include <linux/export.h>
9#include <linux/slab.h>
10#include <linux/types.h>
11#include <linux/string.h>
12
13/* Simplified asprintf. */
14char *kvasprintf(gfp_t gfp, const char *fmt, va_list ap)
15{
16	unsigned int len;
17	char *p;
18	va_list aq;
19
20	va_copy(aq, ap);
21	len = vsnprintf(NULL, 0, fmt, aq);
22	va_end(aq);
23
24	p = kmalloc_track_caller(len+1, gfp);
25	if (!p)
26		return NULL;
27
28	vsnprintf(p, len+1, fmt, ap);
29
30	return p;
31}
32EXPORT_SYMBOL(kvasprintf);
33
34char *kasprintf(gfp_t gfp, const char *fmt, ...)
35{
36	va_list ap;
37	char *p;
38
39	va_start(ap, fmt);
40	p = kvasprintf(gfp, fmt, ap);
41	va_end(ap);
42
43	return p;
44}
45EXPORT_SYMBOL(kasprintf);
46