fs/btrfs/ioctl.h

File Facts

System

Linux kernel

Corpus path

fs/btrfs/ioctl.h

Extension

.h

Size

982 bytes

Lines

30

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

• linux/types.h

Detected Declarations

• struct file
• struct dentry
• struct mnt_idmap
• struct file_kattr
• struct io_uring_cmd
• struct btrfs_inode
• struct btrfs_fs_info
• struct btrfs_ioctl_balance_args

Annotated Snippet

#ifndef BTRFS_IOCTL_H
#define BTRFS_IOCTL_H

#include <linux/types.h>

struct file;
struct dentry;
struct mnt_idmap;
struct file_kattr;
struct io_uring_cmd;
struct btrfs_inode;
struct btrfs_fs_info;
struct btrfs_ioctl_balance_args;

long btrfs_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
long btrfs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
int btrfs_fileattr_get(struct dentry *dentry, struct file_kattr *fa);
int btrfs_fileattr_set(struct mnt_idmap *idmap,
		       struct dentry *dentry, struct file_kattr *fa);
int btrfs_ioctl_get_supported_features(void __user *arg);
void btrfs_sync_inode_flags_to_i_flags(struct btrfs_inode *inode);
void btrfs_update_ioctl_balance_args(struct btrfs_fs_info *fs_info,
				     struct btrfs_ioctl_balance_args *bargs);
int btrfs_uring_cmd(struct io_uring_cmd *cmd, unsigned int issue_flags);
void btrfs_uring_read_extent_endio(void *ctx, int err);

#endif

Annotation

• Immediate include surface: `linux/types.h`.
• Detected declarations: `struct file`, `struct dentry`, `struct mnt_idmap`, `struct file_kattr`, `struct io_uring_cmd`, `struct btrfs_inode`, `struct btrfs_fs_info`, `struct btrfs_ioctl_balance_args`.
• 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.