include/linux/hw_random.h

File Facts

System

Linux kernel

Corpus path

include/linux/hw_random.h

Extension

.h

Size

2358 bytes

Lines

70

Domain

Core OS

Bucket

Core Kernel Interface

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/completion.h
• linux/kref.h
• linux/types.h
• linux/workqueue_types.h

Detected Declarations

• struct hwrng
• struct device

Annotated Snippet

struct hwrng {
	const char *name;
	int (*init)(struct hwrng *rng);
	void (*cleanup)(struct hwrng *rng);
	int (*data_present)(struct hwrng *rng, int wait);
	int (*data_read)(struct hwrng *rng, u32 *data);
	int (*read)(struct hwrng *rng, void *data, size_t max, bool wait);
	unsigned long priv;
	unsigned short quality;

	/* private: internal. */
	struct list_head list;
	struct kref ref;
	struct work_struct cleanup_work;
	struct completion cleanup_done;
	struct completion dying;
};

struct device;

/** Register a new Hardware Random Number Generator driver. */
extern int hwrng_register(struct hwrng *rng);
extern int devm_hwrng_register(struct device *dev, struct hwrng *rng);
/** Unregister a Hardware Random Number Generator driver. */
extern void hwrng_unregister(struct hwrng *rng);
extern void devm_hwrng_unregister(struct device *dve, struct hwrng *rng);

extern long hwrng_msleep(struct hwrng *rng, unsigned int msecs);
extern long hwrng_yield(struct hwrng *rng);

#endif /* LINUX_HWRANDOM_H_ */

Annotation

• Immediate include surface: `linux/completion.h`, `linux/kref.h`, `linux/types.h`, `linux/workqueue_types.h`.
• Detected declarations: `struct hwrng`, `struct device`.
• Atlas domain: Core OS / Core Kernel Interface.
• 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.