函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:fs\ioctl.c Create Date:2022-07-29 10:36:18
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：ioctl_fionbio

函数原型：static int ioctl_fionbio(struct file *filp, int __user *argp)

返回类型：int

参数：

类型参数名称
struct file *filp
int __user *argp
553  error等于Careful: we have to cast the result to the type of the pointer* for sign reasons(on, argp)
554  如果error则返回:error
556  flag等于O_NONBLOCK
562  加自旋锁
563  如果on则f_flags或等于flag
565  否则f_flags与等于flag的反
567  自旋锁解锁
568  返回:error
调用者
名称描述
do_vfs_ioctlWhen you add any new common ioctls to the switches above and below* please update compat_sys_ioctl() too.* do_vfs_ioctl() is not for drivers and not intended to be EXPORT_SYMBOL()'d.* It's just a simple helper for sys_ioctl and compat_sys_ioctl.