include/linux/ipc.h

File Facts

System

Linux kernel

Corpus path

include/linux/ipc.h

Extension

.h

Size

619 bytes

Lines

32

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/spinlock_types.h
• linux/uidgid.h
• linux/rhashtable-types.h
• uapi/linux/ipc.h
• linux/refcount.h

Detected Declarations

• struct kern_ipc_perm

Annotated Snippet

struct kern_ipc_perm {
	spinlock_t	lock;
	bool		deleted;
	int		id;
	key_t		key;
	kuid_t		uid;
	kgid_t		gid;
	kuid_t		cuid;
	kgid_t		cgid;
	umode_t		mode;
	unsigned long	seq;
	void		*security;

	struct rhash_head khtnode;

	struct rcu_head rcu;
	refcount_t refcount;
} ____cacheline_aligned_in_smp __randomize_layout;

#endif /* _LINUX_IPC_H */

Annotation

• Immediate include surface: `linux/spinlock_types.h`, `linux/uidgid.h`, `linux/rhashtable-types.h`, `uapi/linux/ipc.h`, `linux/refcount.h`.
• Detected declarations: `struct kern_ipc_perm`.
• 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.