[mirror_ubuntu-bionic-kernel.git] / include / linux / ipc.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _LINUX_IPC_H
#define _LINUX_IPC_H

#include <linux/spinlock.h>
#include <linux/uidgid.h>
#include <linux/rhashtable.h>
#include <uapi/linux/ipc.h>
#include <linux/refcount.h>

#define IPCMNI 32768  /* <= MAX_INT limit for ipc arrays (including sysctl changes) */

/* used by in-kernel data structures */
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 */
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
1da177e4 LT	2	#ifndef _LINUX_IPC_H
	3	#define _LINUX_IPC_H
	4
0a3021f4	5	#include <linux/spinlock.h>
1efdb69b	6	#include <linux/uidgid.h>
0cfb6aee	7	#include <linux/rhashtable.h>
607ca46e	8	#include <uapi/linux/ipc.h>
9405c03e	9	#include <linux/refcount.h>
b119f13f	10
1da177e4 LT	11	#define IPCMNI 32768 /* <= MAX_INT limit for ipc arrays (including sysctl changes) */
	12
	13	/* used by in-kernel data structures */
60f3e00d	14	struct kern_ipc_perm {
1da177e4	15	spinlock_t lock;
72a8ff2f	16	bool deleted;
7ca7e564	17	int id;
1da177e4	18	key_t key;
1efdb69b EB	19	kuid_t uid;
	20	kgid_t gid;
	21	kuid_t cuid;
	22	kgid_t cgid;
60f3e00d	23	umode_t mode;
1da177e4 LT	24	unsigned long seq;
1da177e4 LT	25	void *security;
dba4cdd3	26
0cfb6aee GK	27	struct rhash_head khtnode;
0cfb6aee GK	28
dba4cdd3	29	struct rcu_head rcu;
9405c03e	30	refcount_t refcount;
3859a271	31	} ____cacheline_aligned_in_smp __randomize_layout;
1da177e4	32
1da177e4	33	#endif /* _LINUX_IPC_H */