fs/xfs/libxfs/xfs_dir2.h

File Facts

System

Linux kernel

Corpus path

fs/xfs/libxfs/xfs_dir2.h

Extension

.h

Size

10879 bytes

Lines

359

Domain

Core OS

Bucket

VFS And Filesystem Core

Inferred role

Core OS: implementation source

Status

source 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 or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• xfs_da_format.h
• xfs_da_btree.h

Detected Declarations

• struct xfs_da_args
• struct xfs_inode
• struct xfs_mount
• struct xfs_trans
• struct xfs_dir2_sf_hdr
• struct xfs_dir2_sf_entry
• struct xfs_dir2_data_hdr
• struct xfs_dir2_data_entry
• struct xfs_dir2_data_unused
• struct xfs_dir3_icfree_hdr
• struct xfs_dir3_icleaf_hdr
• struct xfs_dir_update_params
• struct xfs_dir_hook
• struct xfs_parent_args
• struct xfs_dir_update
• enum xfs_dir2_fmt
• function xfs_dir2_samename
• function xfs_dir2_dataptr_to_byte
• function xfs_dir2_byte_to_dataptr
• function to
• function xfs_dir2_dataptr_to_db
• function xfs_dir2_byte_to_off
• function xfs_dir2_dataptr_to_off
• function xfs_dir2_db_off_to_byte
• function block
• function to
• function xfs_dir2_db_off_to_dataptr
• function block
• function block
• function xfs_dir2_block_tail_p
• function xfs_dir2_leaf_tail_p
• function xfs_ascii_ci_need_xfrm
• function xfs_ascii_ci_xfrm

Annotated Snippet

struct xfs_dir_update_params {
	const struct xfs_inode	*dp;
	const struct xfs_inode	*ip;
	const struct xfs_name	*name;
	int			delta;
};

#ifdef CONFIG_XFS_LIVE_HOOKS
void xfs_dir_update_hook(struct xfs_inode *dp, struct xfs_inode *ip,
		int delta, const struct xfs_name *name);

struct xfs_dir_hook {
	struct xfs_hook		dirent_hook;
};

void xfs_dir_hook_disable(void);
void xfs_dir_hook_enable(void);

int xfs_dir_hook_add(struct xfs_mount *mp, struct xfs_dir_hook *hook);
void xfs_dir_hook_del(struct xfs_mount *mp, struct xfs_dir_hook *hook);
void xfs_dir_hook_setup(struct xfs_dir_hook *hook, notifier_fn_t mod_fn);
#else
# define xfs_dir_update_hook(dp, ip, delta, name)	((void)0)
#endif /* CONFIG_XFS_LIVE_HOOKS */

struct xfs_parent_args;

struct xfs_dir_update {
	struct xfs_inode	*dp;
	const struct xfs_name	*name;
	struct xfs_inode	*ip;
	struct xfs_parent_args	*ppargs;
};

int xfs_dir_create_child(struct xfs_trans *tp, unsigned int resblks,
		struct xfs_dir_update *du);
int xfs_dir_add_child(struct xfs_trans *tp, unsigned int resblks,
		struct xfs_dir_update *du);
int xfs_dir_remove_child(struct xfs_trans *tp, unsigned int resblks,
		struct xfs_dir_update *du);

int xfs_dir_exchange_children(struct xfs_trans *tp, struct xfs_dir_update *du1,
		struct xfs_dir_update *du2, unsigned int spaceres);
int xfs_dir_rename_children(struct xfs_trans *tp, struct xfs_dir_update *du_src,
		struct xfs_dir_update *du_tgt, unsigned int spaceres,
		struct xfs_dir_update *du_wip);

#endif	/* __XFS_DIR2_H__ */

Annotation

• Immediate include surface: `xfs_da_format.h`, `xfs_da_btree.h`.
• Detected declarations: `struct xfs_da_args`, `struct xfs_inode`, `struct xfs_mount`, `struct xfs_trans`, `struct xfs_dir2_sf_hdr`, `struct xfs_dir2_sf_entry`, `struct xfs_dir2_data_hdr`, `struct xfs_dir2_data_entry`, `struct xfs_dir2_data_unused`, `struct xfs_dir3_icfree_hdr`.
• Atlas domain: Core OS / VFS And Filesystem Core.
• Implementation status: source implementation candidate.

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.