find_task...

study/kernel/process/task/find_task/Makefile

@@ -1,14 +1,38 @@
-
-
-obj-m := find_task.o
+ifeq ($(KERNELRELEASE),)
 
 KERNELDIR ?= /lib/modules/$(shell uname -r)/build
-
 PWD := $(shell pwd)
 
-all:
+
+modules:
 	make -C $(KERNELDIR) M=$(PWD) modules
 
+modules_install:
+	make -C $(KERNELDIR) M=$(PWD) modules_install
+
 clean:
 	make -C $(KERNELDIR) M=$(PWD) clean
 
+.PHNOY:
+	modules modules_install clean
+
+else
+
+CFG_FLAGS += -O2  -I./
+EXTRA_CFLAGS  += $(C_FLAGS) $(CFG_INC) $(CFG_INC)  
+
+
+# 注意：驱动模块的名字 千万 不能和本文件夹内的任何文件同名！  
+MODULE_NAME := find-task    					#指定驱动模块的名字  
+RESMAIN_CORE_OBJS := find_task.o				#指定驱动模块的核心文件（有init 和 exit）  
+RESMAIN_GLUE_OBJS := get_task.o		#依赖文件  
+
+
+#xxx-objs := 指定驱动模块的所有依赖文件  
+$(MODULE_NAME)-objs := $(RESMAIN_GLUE_OBJS) $(RESMAIN_CORE_OBJS)   
+
+obj-m := find-task.o   #最终由xxx-objs链接生成find-task.o，再生成find-task.ko  
+
+
+endif  
+  

study/kernel/process/task/find_task/find_task.c

@@ -12,6 +12,8 @@
 
 #include <linux/sched.h>
 
+#include "get_task.h"
+
 /*
  *  macro for find_task_by_pid in the process list
  *  LIST_FOR_EACH       to traversing the process linked list by `list_for_each`
@@ -35,12 +37,12 @@ module_param(PID, uint, 0400);
 
 
 
+void print_vm_list(struct task_struct *task);
 
 
 void getTaskinfo(struct task_struct *task)
 {
 
-
 }
 
 struct task_struct* find_task_by_pid_in_rbtree(int pid)
@@ -61,6 +63,8 @@ struct task_struct* find_task_by_pid_in_ns(int pid)
     {
         printk(KERN_ALERT "%d\t%s\t%p\n", pTask->pid, pTask->comm, (void *)pTask);
     }
+
+    return pTask;
 }
 
 
@@ -152,7 +156,7 @@ static int init_find_task(void)
             break;
         }
     }
-
+    print_vm_list(pTask);
     return 0;
 }
 

study/kernel/process/task/find_task/get_task.c

@@ -0,0 +1,34 @@
+/*************************************************************************
+    > File Name: get_task.c
+    > Author: gatieme
+    > Created Time: Mon 16 May 2016 03:28:46 PM CST
+ ************************************************************************/
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+
+#include <linux/sched.h>
+
+void print_vm_list(struct task_struct *task)
+{
+    struct vm_area_struct *tmp = task->mm->mmap;
+
+    printk("process:%s,pid:%d\n", p->comm, p->pid);
+
+    while (tmp != NULL)
+    {
+
+        printk("0x%lx - 0x%lx\t",tmp->vm_start,tmp->vm_end);
+
+        (tmp->vm_flags & VM_READ)   ? printk("r") : printk("-");
+        (tmp->vm_flags & VM_WRITE)  ? printk("w") : printk("-");
+        (tmp->vm_flags & VM_EXEC)   ? printk("x") : printk("-");
+        (tmp->vm_flags & VM_SHARED) ? printk("s") : printk("p");
+        printk("\n");
+
+        tmp = tmp->vm_next;
+    }
+}
+
+

study/kernel/process/task/find_task/get_task.h

@@ -0,0 +1,8 @@
+#ifndef __GET_TASK_H_INCLUDE__
+#define __GET_TASK_H_INCLUDE__
+
+
+void print_vm_list(struct task_struct *task);
+
+
+#endif