从内核空间中的块设备读取 [英] Reading from a block device in kernel space

问题描述

我正在编写内核模块，需要从现有的块设备执行读取. (/dev/something).

I am writing a kernel module and need to perform reads from an existing block device. (/dev/something).

有人知道我可以做为参考的其他模块吗?

Does anyone know of any other modules that do these that I can use as reference ?

任何指针都将受到欢迎

(Linux.2.6.30)

(Linux.2.6.30)

推荐答案

如果您确实必须使用filp_open，filp_close，vfs_read和vfs_write函数.

If you really absolutely must then use the filp_open, filp_close, vfs_read and vfs_write functions.

针对filp_open的描述指出:如果确实需要，这是从内核空间打开文件的助手.但是通常，您不应该这样做，所以请继续前进，在这里什么也看不到."

The description for for filp_open states "This is the helper to open a file from kernelspace if you really have to. But in generally you should not do this, so please move along, nothing to see here.."

http ://www.linuxjournal.com/article/8110

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