fs/debugfs/internal.h

Source file repositories/reference/linux-study-clean/fs/debugfs/internal.h

File Facts

System
Linux kernel
Corpus path
fs/debugfs/internal.h
Extension
.h
Size
1400 bytes
Lines
59
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.

Dependency Surface

Detected Declarations

Annotated Snippet

struct file_operations;

struct debugfs_inode_info {
	struct inode vfs_inode;
	union {
		const void *raw;
		const struct file_operations *real_fops;
		const struct debugfs_short_fops *short_fops;
		debugfs_automount_t automount;
	};
	void *aux;
};

static inline struct debugfs_inode_info *DEBUGFS_I(struct inode *inode)
{
	return container_of(inode, struct debugfs_inode_info, vfs_inode);
}

/* declared over in file.c */
extern const struct file_operations debugfs_noop_file_operations;
extern const struct file_operations debugfs_open_proxy_file_operations;
extern const struct file_operations debugfs_full_proxy_file_operations;
extern const struct file_operations debugfs_full_short_proxy_file_operations;

struct debugfs_fsdata {
	const struct file_operations *real_fops;
	const struct debugfs_short_fops *short_fops;
	struct {
		refcount_t active_users;
		struct completion active_users_drained;

		/* protect cancellations */
		struct mutex cancellations_mtx;
		struct list_head cancellations;
		unsigned int methods;
	};
};

enum {
	HAS_READ = 1,
	HAS_WRITE = 2,
	HAS_LSEEK = 4,
	HAS_POLL = 8,
	HAS_IOCTL = 16
};

#endif /* _DEBUGFS_INTERNAL_H_ */

Annotation

Implementation Notes