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 10:34:49
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：We _really_ want to just do "generic_permission()" without* even looking at the inode->i_op values. So we keep a cache* flag in inode->i_opflags, that says "this has not special* permission function, use the fast case".

函数原型：static inline int do_inode_permission(struct inode *inode, int mask)

返回类型：int

参数：

类型参数名称
struct inode *inode
intmask
382  如果此条件成立可能性小(为编译器优化)(!(i_opflags & IOP_FASTPERM))则
383  如果此条件成立可能性大(为编译器优化)(permission)则返回:permission(inode, mask)
387  加自旋锁
388  i_opflags或等于IOP_FASTPERM
389  自旋锁解锁
391  返回:generic_permission - check for access rights on a Posix-like filesystem*@inode: inode to check access rights for*@mask: right to check for (%MAY_READ, %MAY_WRITE, %MAY_EXEC,
调用者
名称描述
inode_permissionde_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