fs/ntfs/dir.c

File Facts

System

Linux kernel

Corpus path

fs/ntfs/dir.c

Extension

.c

Size

35922 bytes

Lines

1200

Domain

Core OS

Bucket

VFS And Filesystem Core

Inferred role

Core OS: operation-table or driver-model contract

Status

pattern implementation candidate

Why This File Exists

Core operating-system implementation surface: boot, tasks, memory, VFS, syscall-facing interfaces, synchronization, credentials, and isolation.

• Core operating-system implementation surface: boot, tasks, memory, VFS, syscall-facing interfaces, synchronization, credentials, and isolation.
• Defines an operation table; this is where Linux turns generic core objects into subsystem-specific behavior.
• Uses kernel synchronization; read lock ordering, sleepability, and interrupt context assumptions before translating.
• Allocates kernel memory; connect allocation flags and lifetime to context constraints.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/blkdev.h
• dir.h
• mft.h
• ntfs.h
• index.h
• reparse.h
• linux/filelock.h

Detected Declarations

• struct ntfs_file_private
• struct ntfs_index_ra
• function ntfs_lookup_inode_by_name
• function inode
• function comparison
• function inode
• function comparison
• function ntfs_lookup
• function ntfs_insert_rb
• function ntfs_ia_blocks_readahead
• function ntfs_readdir
• function ntfs_check_empty_dir
• function ntfs_dir_open
• function ntfs_dir_release
• function ntfs_dir_fsync

Annotated Snippet

const struct file_operations ntfs_dir_ops = {
	.llseek		= generic_file_llseek,	/* Seek inside directory. */
	.read		= generic_read_dir,	/* Return -EISDIR. */
	.iterate_shared	= ntfs_readdir,		/* Read directory contents. */
	.fsync		= ntfs_dir_fsync,	/* Sync a directory to disk. */
	.open		= ntfs_dir_open,	/* Open directory. */
	.release	= ntfs_dir_release,
	.unlocked_ioctl	= ntfs_ioctl,
#ifdef CONFIG_COMPAT
	.compat_ioctl	= ntfs_compat_ioctl,
#endif
	.setlease	= generic_setlease,
};

Annotation

• Immediate include surface: `linux/blkdev.h`, `dir.h`, `mft.h`, `ntfs.h`, `index.h`, `reparse.h`, `linux/filelock.h`.
• Detected declarations: `struct ntfs_file_private`, `struct ntfs_index_ra`, `function ntfs_lookup_inode_by_name`, `function inode`, `function comparison`, `function inode`, `function comparison`, `function ntfs_lookup`, `function ntfs_insert_rb`, `function ntfs_ia_blocks_readahead`.
• Atlas domain: Core OS / VFS And Filesystem Core.
• Implementation status: pattern implementation candidate.
• Synchronization appears in or near this file; preserve lock ordering, sleepability, and interrupt-context constraints.

Implementation Notes

• This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
• Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
• Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.