#include <linux/elf.h>
  #include <linux/fs.h>
  #include <linux/mm.h>
  
  #include <asm/elf.h>
  
  
  Elf_Half __weak elf_core_extra_phdrs(void)
  {
  	return 0;
  }
  
  int __weak elf_core_write_extra_phdrs(struct file *file, loff_t offset, size_t *size,
  				      unsigned long limit)
  {
  	return 1;
  }
  
  int __weak elf_core_write_extra_data(struct file *file, size_t *size,
  				     unsigned long limit)
  {
  	return 1;
  }

  
  size_t __weak elf_core_extra_data_size(void)
  {
  	return 0;
  }