eventfd_ctx_fileget

函数名称：ventfd_ctx_fileget - Acquires a reference to the internal eventfd context.*@file: [in] Eventfd file pointer.* Returns a pointer to the internal eventfd context, otherwise the error* pointer:* -EINVAL : The @fd file descriptor is not an eventfd file.

函数原型：struct eventfd_ctx *eventfd_ctx_fileget(struct file *file)

返回类型：struct eventfd_ctx

参数：

类型	参数	名称
struct file *	file

397

如果f_op不等于eventfd_fops则返回:错误号

400

ctx等于 needed for tty driver, and maybe others

401

对象增加引用

402

返回:ctx

**调用者**
名称	描述
eventfd_ctx_fdget	ventfd_ctx_fdget - Acquires a reference to the internal eventfd context.@fd: [in] Eventfd file descriptor. Returns a pointer to the internal eventfd context, otherwise the error* pointers returned by the following functions:* eventfd_fget

源代码转换工具开放的插件接口	X
支持：c/c++/esqlc/java Oracle/Informix/Mysql 插件可实现：逻辑报告代码生成和批量转换代码

函数逻辑报告