函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\time\posix-clock.c Create Date:2022-07-27 11:48:28
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：posix_clock_read

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

返回类型：ssize_t

参数：

类型参数名称
struct file *fp
char __user *buf
size_tcount
loff_t *ppos
42  clk等于Returns NULL if the posix_clock instance attached to 'fp' is old and stale.
43  err等于负EINVAL
45  如果非clk则返回:负ENODEV
48  如果read则err等于read(clk, f_flags, buf, count)
51  put_posix_clock(clk)
53  返回:err