1
2#include <malloc.h>
3#include <memalign.h>
4#include <asm/cache.h>
5#include <linux/compat.h>
6
7struct p_current cur = {
8	.pid = 1,
9};
10__maybe_unused struct p_current *current = &cur;
11
12unsigned long copy_from_user(void *dest, const void *src,
13		     unsigned long count)
14{
15	memcpy((void *)dest, (void *)src, count);
16	return 0;
17}
18
19void *kmalloc(size_t size, int flags)
20{
21	void *p;
22
23	p = malloc_cache_aligned(size);
24	if (p && flags & __GFP_ZERO)
25		memset(p, 0, size);
26
27	return p;
28}
29
30struct kmem_cache *get_mem(int element_sz)
31{
32	struct kmem_cache *ret;
33
34	ret = memalign(ARCH_DMA_MINALIGN, sizeof(struct kmem_cache));
35	ret->sz = element_sz;
36
37	return ret;
38}
39
40void *kmem_cache_alloc(struct kmem_cache *obj, int flag)
41{
42	return malloc_cache_aligned(obj->sz);
43}
44
45/**
46 * kmemdup - duplicate region of memory
47 *
48 * @src: memory region to duplicate
49 * @len: memory region length
50 * @gfp: GFP mask to use
51 *
52 * Return: newly allocated copy of @src or %NULL in case of error
53 */
54void *kmemdup(const void *src, size_t len, gfp_t gfp)
55{
56	void *p;
57
58	p = kmalloc(len, gfp);
59	if (p)
60		memcpy(p, src, len);
61	return p;
62}
63