Nodegetattr

Nodegetattr is a function in the Linux kernel, specifically within the Virtual File System (VFS) layer. It is responsible for retrieving the attributes of a file or directory. When a user or application requests information about a file, such as its size, permissions, or modification time, the VFS layer calls nodegetattr to obtain this data. The function is part of the file system's inode operations structure, which defines the methods that can be performed on an inode. The attributes retrieved by nodegetattr are typically stored in a structure called struct kstat, which is then used by the VFS layer to provide the requested information to the user or application. This function is crucial for the proper functioning of the file system, as it ensures that accurate and up-to-date information about files and directories is available to users and applications.