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