函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:fs\libfs.c Create Date:2022-07-29 10:40:58
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：simple_setattr - setattr for simple filesystem*@dentry: dentry*@iattr: iattr structure* Returns 0 on success, -error on failure

函数原型：int simple_setattr(struct dentry *dentry, struct iattr *iattr)

返回类型：int

参数：

类型参数名称
struct dentry *dentry
struct iattr *iattr
425  inode等于获得目录项的索引节点
428  error等于setattr_prepare - check if attribute changes to a dentry are allowed*@dentry: dentry to check*@attr: attributes to change* Check if we are allowed to change the attributes contained in @attr* in the given dentry
429  如果error则返回:error
432  如果ia_valid按位与ATTR_SIZE则runcate_setsize - update inode and pagecache for a new file size*@inode: inode*@newsize: new file size* truncate_setsize updates i_size and performs pagecache truncation (if* necessary) to @newsize. It will be typically be called from the filesystem's
434  setattr_copy - copy simple metadata updates into the generic inode*@inode: the inode to be updated*@attr: the new attributes* setattr_copy must be called with i_mutex held.* setattr_copy updates the inode's metadata with that specified* in attr
435  mark_inode_dirty(inode)
436  返回:0
调用者
名称描述
notify_changey_change - modify attributes of a filesytem object*@dentry: object affected*@attr: new attributes*@delegated_inode: returns inode, if the inode is delegated* The caller must hold the i_mutex on the affected object