函数逻辑报告

函数名称：vm_read_key - read() for <securityfs>/evm*@filp: file pointer, not actually used*@buf: where to put the result*@count: maximum to send along*@ppos: where to start* Returns number of bytes read or error code, as appropriate

函数原型：static ssize_t evm_read_key(struct file *filp, char __user *buf, size_t count, loff_t *ppos)

返回类型：ssize_t

参数：