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