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/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
#ifndef _LINUX_IPC_H
#define _LINUX_IPC_H
#include <linux/types.h>
#define IPC_PRIVATE ((__kernel_key_t) 0)
/* Obsolete, used only for backwards compatibility and libc5 compiles */
struct ipc_perm
{
__kernel_key_t key;
__kernel_uid_t uid;
__kernel_gid_t gid;
__kernel_uid_t cuid;
__kernel_gid_t cgid;
__kernel_mode_t mode;
unsigned short seq;
};
/* Include the definition of ipc64_perm */
#include <asm/ipcbuf.h>
/* resource get request flags */
#define IPC_CREAT 00001000 /* create if key is nonexistent */
#define IPC_EXCL 00002000 /* fail if key exists */
#define IPC_NOWAIT 00004000 /* return error on wait */
/* these fields are used by the DIPC package so the kernel as standard
should avoid using them if possible */
#define IPC_DIPC 00010000 /* make it distributed */
#define IPC_OWN 00020000 /* this machine is the DIPC owner */
/*
* Control commands used with semctl, msgctl and shmctl
* see also specific commands in sem.h, msg.h and shm.h
*/
#define IPC_RMID 0 /* remove resource */
#define IPC_SET 1 /* set ipc_perm options */
#define IPC_STAT 2 /* get ipc_perm options */
#define IPC_INFO 3 /* see ipcs */
/*
* Version flags for semctl, msgctl, and shmctl commands
* These are passed as bitflags or-ed with the actual command
*/
#define IPC_OLD 0 /* Old version (no 32-bit UID support on many
architectures) */
#define IPC_64 0x0100 /* New version (support 32-bit UIDs, bigger
message sizes, etc. */
/*
* These are used to wrap system calls.
*
* See architecture code for ugly details..
*/
struct ipc_kludge {
struct msgbuf *msgp;
long msgtyp;
};
#define SEMOP 1
#define SEMGET 2
#define SEMCTL 3
#define SEMTIMEDOP 4
#define MSGSND 11
#define MSGRCV 12
#define MSGGET 13
#define MSGCTL 14
#define SHMAT 21
#define SHMDT 22
#define SHMGET 23
#define SHMCTL 24
/* Used by the DIPC package, try and avoid reusing it */
#define DIPC 25
#define IPCCALL(version,op) ((version)<<16 | (op))
#endif /* _LINUX_IPC_H */