mirror of
https://github.com/gatieme/LDD-LinuxDeviceDrivers.git
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122 lines
3.7 KiB
C
122 lines
3.7 KiB
C
/*
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* Author: HIT CS HDMC team.
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* Create: 2010-3-12 8:20:01
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* Last modified: 2010-6-13 14:13:47
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*/
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#ifndef _MEMORY_ENGINE_H
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#define _MEMORY_ENGINE_H
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/*
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* common include header files
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*/
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#include <linux/version.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/string.h>
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#include <linux/kprobes.h>
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#include <linux/mm.h>
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#include <linux/sched.h>
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#include <linux/fs.h>
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#include <linux/mount.h>
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#include <linux/dcache.h>
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#include <linux/slab.h>
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#include <linux/highmem.h>
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#include <linux/proc_fs.h>
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#include <linux/uaccess.h>
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#include <linux/kallsyms.h>
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#include <linux/kprobes.h>
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#include <asm/pgtable.h>
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#include <asm/page.h>
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#include "common.h"
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#define MAX_LINE 256 /// max length of a line
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#define DELIMITER '\n' /// the char is used to split the taskinfo
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#define PERMISSION 0644 /// proc node permission
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/*
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* return values
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*/
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#define OK 0
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#define FAIL -1
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#define PGD_NONE -2
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#define PUD_NONE -3
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#define PMD_NONE -4
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#define PTE_NONE -5
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#define PTE_NOT_PRESENT -6
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/*
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* request command
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*/
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#define REQUEST_TASK_INFO 1 /// get a task's memory map information
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#define REQUEST_V2P 2 /// convert a process's linear address to physical address
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#define REQUEST_KV2P 3 /// convert kernel virtual address to physical address
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#define REQUEST_KFUNC_VA 4 /// get kernel function's addr(kernel virtual address)
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#define REQUEST_READ_KFUNC 5 /// 请求读取内核函数起始地址内容
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#define REQUEST_WRITE_KFUNC 6 /// 请求改写内核函数起始地址内容
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///#define REQUEST_WRITE 10 /// 请求改写指定物理地址内容，改为用户态实现此功能
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///#define REQUEST_MEM 11 /// 请求获取全部物理内存信息
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///#define REQUEST_ADDR_STOP 12 ///
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/*
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* ack signals
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*/
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#define ACK_TASK_INFO REQUEST_TASK_INFO
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#define ACK_V2P REQUEST_V2P
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#define ACK_KV2P REQUEST_KV2P
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#define ACK_KFUNC_VA REQUEST_KFUNC_VA
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#define ACK_READ_KFUNC REQUEST_READ_KFUNC
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#define ACK_WRITE_KFUNC REQUEST_WRITE_KFUNC
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///#define REQUEST_WRITE REQUEST_WRITE
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///#define ACK_MEM REQUEST_MEM
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///#define ACK_ADDR_STOP REQUEST_ADDR_STOP
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/*
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* utility functions
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*/
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static int handler_pre_kFunc(struct kprobe *p, struct pt_regs *regs);
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struct task_struct *findTaskByPid(pid_t pid);
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long v2p(struct mm_struct *pMM,unsigned long va,int *pStatus);
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long kv2p(unsigned long va,int *pStatus);
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long kFunc2v(char *funcName);
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struct vm_area_struct * getVMA(struct mm_struct *pMM,unsigned long va);
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pte_t * getPte(struct mm_struct *pMM,unsigned long va);
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int setVMAFlags(struct mm_struct *pMM,unsigned long va,int *pStatus,int flags);
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int setPageFlags(struct mm_struct *pMM,unsigned long va,int *pStatus,int flags);
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int getTaskInfo(struct task_struct *pTask, char *pData, int length);
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/*
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* proc entry function
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*/
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int proc_write_pid(struct file *file,const char __user *buffer,unsigned long count,void * data);
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int proc_read_virtualAddr(char * page,char **start, off_t off, int count, int * eof,void * data);
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int proc_write_virtualAddr(struct file *file,const char *buffer,unsigned long count,void * data);
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int proc_write_ctl(struct file *file,const char *buffer,unsigned long count,void * data);
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int proc_read_signal(char * page,char **start, off_t off, int count, int * eof,void * data);
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int proc_write_signal(struct file *file,const char *buffer,unsigned long count,void * data);
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int proc_read_pa(char * page,char **start, off_t off, int count, int * eof,void * data);
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static int jforce_sig_info(int sig,struct siginfo *info,struct task_struct *t);
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#endif
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