函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:fs\namei.c Create Date:2022-07-29 10:34:55
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：may_lookup

函数原型：static inline int may_lookup(struct nameidata *nd)

返回类型：int

参数：

类型参数名称
struct nameidata *nd
1689  如果flags按位与RCU pathwalk mode; semi-internal 则
1690  err等于de_permission - Check for access rights to a given inode*@inode: Inode to check permission on*@mask: Right to check for (%MAY_READ, %MAY_WRITE, %MAY_EXEC)* Check for read/write/execute permissions on an inode
1691  如果err不等于负ECHILD则返回:err
1693  如果lazy_walk - try to switch to ref-walk mode则返回:负ECHILD
1696  返回:de_permission - Check for access rights to a given inode*@inode: Inode to check permission on*@mask: Right to check for (%MAY_READ, %MAY_WRITE, %MAY_EXEC)* Check for read/write/execute permissions on an inode
调用者
名称描述
link_path_walkName resolution.* This is the basic name resolution function, turning a pathname into* the final dentry. We expect 'base' to be positive and a directory.* Returns 0 and nd will have valid dentry and mnt on success.