fs/hfsplus/dir.c

File Facts

System

Linux kernel

Corpus path

fs/hfsplus/dir.c

Extension

.c

Size

15435 bytes

Lines

644

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/errno.h
• linux/fs.h
• linux/slab.h
• linux/random.h
• linux/nls.h
• hfsplus_fs.h
• hfsplus_raw.h
• xattr.h

Detected Declarations

• function Copyright
• function hfsplus_readdir
• function hfsplus_dir_release
• function hfsplus_link
• function hfsplus_unlink
• function atomic_read
• function hfsplus_rmdir
• function hfsplus_symlink
• function hfsplus_mknod
• function hfsplus_create
• function hfsplus_rename

Annotated Snippet

const struct file_operations hfsplus_dir_operations = {
	.fsync		= hfsplus_file_fsync,
	.read		= generic_read_dir,
	.iterate_shared	= hfsplus_readdir,
	.unlocked_ioctl = hfsplus_ioctl,
	.llseek		= generic_file_llseek,
	.release	= hfsplus_dir_release,
};

Annotation

• Immediate include surface: `linux/errno.h`, `linux/fs.h`, `linux/slab.h`, `linux/random.h`, `linux/nls.h`, `hfsplus_fs.h`, `hfsplus_raw.h`, `xattr.h`.
• Detected declarations: `function Copyright`, `function hfsplus_readdir`, `function hfsplus_dir_release`, `function hfsplus_link`, `function hfsplus_unlink`, `function atomic_read`, `function hfsplus_rmdir`, `function hfsplus_symlink`, `function hfsplus_mknod`, `function hfsplus_create`.
• 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.