LInux内核API查找与虚拟地址相对应的vma [英] LInux Kernel API to find the vma corresponds to a virtual address

问题描述

是否有任何内核API可以找到与虚拟地址相对应的VMA?

Is there any Kernel API to find the VMA corresponds to virtual address?

示例:如果一个地址为0x13000，我需要如下所示的功能

Example : if a have an address 0x13000 i need some function like below

 struct vm_area_struct *vma =  vma_corresponds_to (0x13000,task);

推荐答案

您正在 linux/mm.h 中寻找 find_vma .

/* Look up the first VMA which satisfies  addr < vm_end,  NULL if none. */
extern struct vm_area_struct * find_vma(struct mm_struct * mm, unsigned long addr);

这应该可以解决问题:

struct vm_area_struct *vma = find_vma(task->mm, 0x13000);
if (vma == NULL)
    return -EFAULT;
if (0x13000 >= vma->vm_end)
    return -EFAULT;

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