LCOM1920-T02G10

/*        $NetBSD: ipc.h,v 1.36 2015/05/19 12:17:53 joerg Exp $        */

/*

 * Copyright (c) 1988 University of Utah.

 * Copyright (c) 1990, 1993

 *        The Regents of the University of California.  All rights reserved.

 * (c) UNIX System Laboratories, Inc.

 * All or some portions of this file are derived from material licensed

 * to the University of California by American Telephone and Telegraph

 * Co. or Unix System Laboratories, Inc. and are reproduced herein with

 * the permission of UNIX System Laboratories, Inc.

 *

 * This code is derived from software contributed to Berkeley by

 * the Systems Programming Group of the University of Utah Computer

 * Science Department.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 * 1. Redistributions of source code must retain the above copyright

 *    notice, this list of conditions and the following disclaimer.

 * 2. Redistributions in binary form must reproduce the above copyright

 *    notice, this list of conditions and the following disclaimer in the

 *    documentation and/or other materials provided with the distribution.

 * 3. Neither the name of the University nor the names of its contributors

 *    may be used to endorse or promote products derived from this software

 *    without specific prior written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND

 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE

 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS

 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY

 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF

 * SUCH DAMAGE.

 *

 *        @(#)ipc.h        8.4 (Berkeley) 2/19/95

 */

/*

 * SVID compatible ipc.h file

 */

#ifndef _SYS_IPC_H_

#define _SYS_IPC_H_

#include <sys/featuretest.h>

#include <sys/types.h>

struct ipc_perm {

        uid_t                uid;        /* user id */

        gid_t                gid;        /* group id */

        uid_t                cuid;        /* creator user id */

        gid_t                cgid;        /* creator group id */

        mode_t                mode;        /* r/w permission */

        /*

         * These members are private and used only in the internal

         * implementation of this interface.

         */

        unsigned short        _seq;        /* sequence # (to generate unique

                                   msg/sem/shm id) */

        key_t                _key;        /* user specified msg/sem/shm key */

};

#if defined(_NETBSD_SOURCE)

/* Warning: 64-bit structure padding is needed here */

struct ipc_perm_sysctl {

        uint64_t        _key;

        uid_t                uid;

        gid_t                gid;

        uid_t                cuid;

        gid_t                cgid;

        mode_t                mode;

        int16_t                _seq;

        int16_t                pad;

};

#endif /* _NETBSD_SOURCE */

/* Common access type bits, used with ipcperm(). */

#define        IPC_R                000400        /* read permission */

#define        IPC_W                000200        /* write/alter permission */

#define        IPC_M                010000        /* permission to change control info */

/* X/Open required constants (same values as system 5) */

#define        IPC_CREAT        001000        /* create entry if key does not exist */

#define        IPC_EXCL        002000        /* fail if key exists */

#define        IPC_NOWAIT        004000        /* error if request must wait */

#define        IPC_PRIVATE        (key_t)0 /* private key */

#define        IPC_RMID        0        /* remove identifier */

#define        IPC_SET                1        /* set options */

#define        IPC_STAT        2        /* get options */

#if defined(__minix)

#define IPC_INFO       500       /* See ipcs. */

#endif /* !defined(__minix) */

/*

 * Macros to convert between ipc ids and array indices or sequence ids.

 * The first of these is used by ipcs(1), and so is defined outside the

 * kernel as well.

 */

#if defined(_NETBSD_SOURCE)

#define        IXSEQ_TO_IPCID(ix,perm)        (((perm._seq) << 16) | (ix & 0xffff))

#endif

#ifdef _KERNEL

#include <sys/sysctl.h>

#define        IPCID_TO_IX(id)                ((id) & 0xffff)

#define        IPCID_TO_SEQ(id)        (((id) >> 16) & 0xffff)

struct kauth_cred;

__BEGIN_DECLS

int        ipcperm(struct kauth_cred *, struct ipc_perm *, int);

void        sysvipcinit(void);

void        sysvipcfini(void);

__END_DECLS

/*

 * sysctl helper routine for kern.ipc.sysvipc_info subtree.

 */

#define SYSCTL_FILL_PERM(src, dst) do { \

        (dst)._key = (src)._key; \

        (dst).uid = (src).uid; \

        (dst).gid = (src).gid; \

        (dst).cuid = (src).cuid; \

        (dst).cgid = (src).cgid; \

        (dst).mode = (src).mode; \

        (dst)._seq = (src)._seq; \

} while (/*CONSTCOND*/ 0);

/*

 * Set-up the sysctl routine for COMPAT_50

 */

__BEGIN_DECLS

void sysvipc50_set_compat_sysctl(int (*)(SYSCTLFN_PROTO));

__END_DECLS

#else /* _KERNEL */

__BEGIN_DECLS

key_t        ftok(const char *, int);

__END_DECLS

#endif

#endif /* !_SYS_IPC_H_ */