1. 根目录:
2. include
3. linux
4. earlycpio.h

#ifndef _LINUX_EARLYCPIO_H
#define _LINUX_EARLYCPIO_H

#include <linux/types.h>

#define MAX_CPIO_FILE_NAME 18

struct cpio_data {
	void *data;
	size_t size;
	char name[MAX_CPIO_FILE_NAME];
};

struct cpio_data find_cpio_data(const char *path, void *data, size_t len,
				long *offset);

#endif /* _LINUX_EARLYCPIO_H */