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#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 */