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Dec 4, 2025 · Fundamentals

Exploring Linux Filesystems: VFS, ext2 Superblock, and Inode Access

This article guides readers through Linux file system fundamentals, explaining the role of the virtual file system (VFS), detailed structures of the ext2 superblock, group descriptors, block and inode bitmaps, and provides C code examples for extracting and reading file data directly via inode numbers.