[linux.git] / lib / kasprintf.c

/*
 *  linux/lib/kasprintf.c
 *
 *  Copyright (C) 1991, 1992  Linus Torvalds
 */

#include <stdarg.h>
#include <linux/module.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(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);
Commit	Line	Data
96e3e18e SR	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>
5a0e3ad6	9	#include <linux/slab.h>
96e3e18e SR	10	#include <linux/types.h>
	11	#include <linux/string.h>
	12
	13	/* Simplified asprintf. */
	14	char 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(len+1, gfp);
	25	if (!p)
	26	return NULL;
	27
	28	vsnprintf(p, len+1, fmt, ap);
	29
	30	return p;
	31	}
	32	EXPORT_SYMBOL(kvasprintf);
	33
	34	char 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	}
	45	EXPORT_SYMBOL(kasprintf);