函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:fs\xattr.c Create Date:2022-07-29 10:40:32
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：path_getxattr

函数原型：static ssize_t path_getxattr(const char __user *pathname, const char __user *name, void __user *value, size_t size, unsigned int lookup_flags)

返回类型：ssize_t

参数：

类型参数名称
const char __user *pathname
const char __user *name
void __user *value
size_tsize
unsigned intlookup_flags
562  retry :
563  error等于user_path_at(Special value used to indicateopenat should use the currentworking directory. , pathname, lookup_flags, & path)
564  如果error则返回:error
566  error等于Extended attribute GET operations
567  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.
568  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
569  lookup_flags或等于ll ->d_revalidate() to trust no cache
570  转到:retry
572  返回:error
调用者
名称描述
SYSCALL_DEFINE4
SYSCALL_DEFINE4