lib/linux_compat.c

   1
   2 #include <common.h>
   3 #include <linux/compat.h>
   4
   5 struct p_current cur = {
   6         .pid = 1,
   7 };
   8 __maybe_unused struct p_current *current = &cur;
   9
  10 unsigned long copy_from_user(void *dest, const void *src,
  11                      unsigned long count)
  12 {
  13         memcpy((void *)dest, (void *)src, count);
  14         return 0;
  15 }
  16
  17 void *kmalloc(size_t size, int flags)
  18 {
  19         return memalign(ARCH_DMA_MINALIGN, size);
  20 }
  21
  22 void *kzalloc(size_t size, int flags)
  23 {
  24         void *ptr = kmalloc(size, flags);
  25         memset(ptr, 0, size);
  26         return ptr;
  27 }
  28
  29 void *vzalloc(unsigned long size)
  30 {
  31         return kzalloc(size, 0);
  32 }
  33
  34 struct kmem_cache *get_mem(int element_sz)
  35 {
  36         struct kmem_cache *ret;
  37
  38         ret = memalign(ARCH_DMA_MINALIGN, sizeof(struct kmem_cache));
  39         ret->sz = element_sz;
  40
  41         return ret;
  42 }
  43
  44 void *kmem_cache_alloc(struct kmem_cache *obj, int flag)
  45 {
  46         return memalign(ARCH_DMA_MINALIGN, obj->sz);
  47 }