lib/linux_compat.c

   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
  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
  18 void *kmalloc(size_t size, int flags)
  19 {
  20         void *p;
  21
  22         p = malloc_cache_aligned(size);
  23         if (flags & __GFP_ZERO)
  24                 memset(p, 0, size);
  25
  26         return p;
  27 }
  28
  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
  39 void *kmem_cache_alloc(struct kmem_cache *obj, int flag)
  40 {
  41         return malloc_cache_aligned(obj->sz);
  42 }