函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:fs\statfs.c Create Date:2022-07-29 10:43:15
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：user_statfs

函数原型：int user_statfs(const char __user *pathname, struct kstatfs *st)

返回类型：int

参数：

类型参数名称
const char __user *pathname
struct kstatfs *st
99  lookup_flags等于llow links at the end 按位或rce terminal automount
100  retry :
101  error等于user_path_at(Special value used to indicateopenat should use the currentworking directory. , pathname, lookup_flags, & path)
102  如果非error则
103  error等于vfs_statfs( & path, st)
104  path_put - put a reference to a path*@path: path to put the reference to* Given a path decrement the reference count to the dentry and the vfsmount.
105  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
106  lookup_flags或等于ll ->d_revalidate() to trust no cache
107  转到:retry
110  返回:error
调用者
名称描述
SYSCALL_DEFINE2
SYSCALL_DEFINE3
COMPAT_SYSCALL_DEFINE2The following statfs calls are copies of code from fs/statfs.c and* should be checked against those from time to time
kcompat_sys_statfs64