[linux-2.6-block.git] / mm / util.c

#include <linux/slab.h>
#include <linux/string.h>
#include <linux/module.h>

/**
 * kzalloc - allocate memory. The memory is set to zero.
 * @size: how many bytes of memory are required.
 * @flags: the type of memory to allocate.
 */
void *kzalloc(size_t size, gfp_t flags)
{
	void *ret = kmalloc(size, flags);
	if (ret)
		memset(ret, 0, size);
	return ret;
}
EXPORT_SYMBOL(kzalloc);

/*
 * kstrdup - allocate space for and copy an existing string
 *
 * @s: the string to duplicate
 * @gfp: the GFP mask used in the kmalloc() call when allocating memory
 */
char *kstrdup(const char *s, gfp_t gfp)
{
	size_t len;
	char *buf;

	if (!s)
		return NULL;

	len = strlen(s) + 1;
	buf = kmalloc(len, gfp);
	if (buf)
		memcpy(buf, s, len);
	return buf;
}
EXPORT_SYMBOL(kstrdup);
Commit	Line	Data
30992c97 MM	1	#include <linux/slab.h>
	2	#include <linux/string.h>
	3	#include <linux/module.h>
	4
	5	/**
	6	* kzalloc - allocate memory. The memory is set to zero.
	7	* @size: how many bytes of memory are required.
	8	* @flags: the type of memory to allocate.
	9	*/
	10	void *kzalloc(size_t size, gfp_t flags)
	11	{
	12	void *ret = kmalloc(size, flags);
	13	if (ret)
	14	memset(ret, 0, size);
	15	return ret;
	16	}
	17	EXPORT_SYMBOL(kzalloc);
	18
	19	/*
	20	* kstrdup - allocate space for and copy an existing string
	21	*
	22	* @s: the string to duplicate
	23	* @gfp: the GFP mask used in the kmalloc() call when allocating memory
	24	*/
	25	char kstrdup(const char s, gfp_t gfp)
	26	{
	27	size_t len;
	28	char *buf;
	29
	30	if (!s)
	31	return NULL;
	32
	33	len = strlen(s) + 1;
	34	buf = kmalloc(len, gfp);
	35	if (buf)
	36	memcpy(buf, s, len);
	37	return buf;
	38	}
	39	EXPORT_SYMBOL(kstrdup);