函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:fs\open.c Create Date:2022-07-29 10:30:59
Last Modify:2020-03-18 10:16:03 Copyright©Brick
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函数名称：do_fchmodat

函数原型：int do_fchmodat(int dfd, const char __user *filename, umode_t mode)

返回类型：int

参数：

类型参数名称
intdfd
const char __user *filename
umode_tmode
595  lookup_flags等于llow links at the end
596  retry :
597  error等于user_path_at(dfd, filename, lookup_flags, & path)
598  如果非error则
599  error等于chmod_common( & path, mode)
600  path_put( & path)
601  如果ry_estale - determine whether the caller should retry an operation*@error: the error that would currently be returned*@flags: flags being used for next lookup attempt* Check to see if the error code was -ESTALE, and then determine whether则
602  lookup_flags或等于ll ->d_revalidate() to trust no cache
603  转到:retry
606  返回:error
调用者
名称描述
SYSCALL_DEFINE3
SYSCALL_DEFINE2