38cc1b3975
"KERN_SYSVIPC_SEM_INFO" and "KERN_SYSVIPC_SHM_INFO" to return the info and data structures for the relevent SysV IPC types. The return structures use fixed-size types and should be compat32 safe. All user-visible changes are protected with #if !defined(_POSIX_C_SOURCE) && !defined(_XOPEN_SOURCE) Make all variable declarations extern in msg.h, sem.h and shm.h and add relevent variable declarations to sysv_*.c and remove unneeded header files from those .c files. Make compat14 SysV IPC conversion functions and sysctl_file() static. Change the data pointer to "void *" in sysctl_clockrate(), sysctl_ntptime(), sysctl_file() and sysctl_doeproc().
225 lines
7.4 KiB
C
225 lines
7.4 KiB
C
/* $NetBSD: msg.h,v 1.13 2000/06/02 15:53:05 simonb Exp $ */
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/*-
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* Copyright (c) 1999 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
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* NASA Ames Research Center.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* SVID compatible msg.h file
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*
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* Author: Daniel Boulet
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*
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* Copyright 1993 Daniel Boulet and RTMX Inc.
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*
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* This system call was implemented by Daniel Boulet under contract from RTMX.
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*
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* Redistribution and use in source forms, with and without modification,
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* are permitted provided that this entire comment appears intact.
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*
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* Redistribution in binary form may occur without any restrictions.
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* Obviously, it would be nice if you gave credit where credit is due
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* but requiring it would be too onerous.
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*
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* This software is provided ``AS IS'' without any warranties of any kind.
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*/
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#ifndef _SYS_MSG_H_
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#define _SYS_MSG_H_
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#include <sys/ipc.h>
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#ifdef _KERNEL
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struct __msg {
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struct __msg *msg_next; /* next msg in the chain */
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long msg_type; /* type of this message */
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/* >0 -> type of this message */
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/* 0 -> free header */
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u_short msg_ts; /* size of this message */
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short msg_spot; /* location of start of msg in buffer */
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};
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#endif /* _KERNEL */
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#define MSG_NOERROR 010000 /* don't complain about too long msgs */
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typedef unsigned long msgqnum_t;
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typedef size_t msglen_t;
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struct msqid_ds {
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struct ipc_perm msg_perm; /* operation permission strucure */
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msgqnum_t msg_qnum; /* number of messages in the queue */
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msglen_t msg_qbytes; /* max # of bytes in the queue */
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pid_t msg_lspid; /* process ID of last msgsend() */
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pid_t msg_lrpid; /* process ID of last msgrcv() */
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time_t msg_stime; /* time of last msgsend() */
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time_t msg_rtime; /* time of last msgrcv() */
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time_t msg_ctime; /* time of last change */
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/*
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* These members are private and used only in the internal
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* implementation of this interface.
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*/
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struct __msg *_msg_first; /* first message in the queue */
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struct __msg *_msg_last; /* last message in the queue */
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msglen_t _msg_cbytes; /* # of bytes currently in queue */
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};
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#ifdef _KERNEL
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/*
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* Old message queue data structure used before NetBSD 1.5.
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*/
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struct msqid_ds14 {
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struct ipc_perm14 msg_perm; /* msg queue permission bits */
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struct __msg *msg_first; /* first message in the queue */
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struct __msg *msg_last; /* last message in the queue */
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u_long msg_cbytes; /* number of bytes in use on the queue */
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u_long msg_qnum; /* number of msgs in the queue */
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u_long msg_qbytes; /* max # of bytes on the queue */
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pid_t msg_lspid; /* pid of last msgsnd() */
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pid_t msg_lrpid; /* pid of last msgrcv() */
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time_t msg_stime; /* time of last msgsnd() */
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long msg_pad1;
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time_t msg_rtime; /* time of last msgrcv() */
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long msg_pad2;
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time_t msg_ctime; /* time of last msgctl() */
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long msg_pad3;
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long msg_pad4[4];
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};
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#endif
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#if !defined(_POSIX_C_SOURCE) && !defined(_XOPEN_SOURCE)
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/*
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* Based on the configuration parameters described in an SVR2 (yes, two)
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* config(1m) man page.
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*
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* Each message is broken up and stored in segments that are msgssz bytes
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* long. For efficiency reasons, this should be a power of two. Also,
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* it doesn't make sense if it is less than 8 or greater than about 256.
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* Consequently, msginit in kern/sysv_msg.c checks that msgssz is a power of
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* two between 8 and 1024 inclusive (and panic's if it isn't).
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*/
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struct msginfo {
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int32_t msgmax; /* max chars in a message */
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int32_t msgmni; /* max message queue identifiers */
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int32_t msgmnb; /* max chars in a queue */
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int32_t msgtql; /* max messages in system */
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int32_t msgssz; /* size of a message segment
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(see notes above) */
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int32_t msgseg; /* number of message segments */
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};
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/* Warning: 64-bit structure padding is needed here */
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struct msgid_ds_sysctl {
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struct ipc_perm_sysctl msg_perm;
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u_int64_t msg_qnum;
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u_int64_t msg_qbytes;
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u_int64_t _msg_cbytes;
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pid_t msg_lspid;
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pid_t msg_lrpid;
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time_t msg_stime;
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time_t msg_rtime;
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time_t msg_ctime;
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int32_t pad;
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};
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struct msg_sysctl_info {
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struct msginfo msginfo;
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struct msgid_ds_sysctl msgids[1];
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};
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#endif /* !_POSIX_C_SOURCE && !_XOPEN_SOURCE */
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#ifdef _KERNEL
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#ifndef MSGSSZ
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#define MSGSSZ 8 /* Each segment must be 2^N long */
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#endif
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#ifndef MSGSEG
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#define MSGSEG 2048 /* must be less than 32767 */
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#endif
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#undef MSGMAX /* ALWAYS compute MGSMAX! */
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#define MSGMAX (MSGSSZ*MSGSEG)
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#ifndef MSGMNB
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#define MSGMNB 2048 /* max # of bytes in a queue */
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#endif
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#ifndef MSGMNI
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#define MSGMNI 40
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#endif
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#ifndef MSGTQL
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#define MSGTQL 40
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#endif
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/*
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* macros to convert between msqid_ds's and msqid's.
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*/
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#define MSQID(ix,ds) ((ix) & 0xffff | (((ds).msg_perm._seq << 16) & 0xffff0000))
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#define MSQID_IX(id) ((id) & 0xffff)
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#define MSQID_SEQ(id) (((id) >> 16) & 0xffff)
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/*
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* Stuff allocated in machdep.h
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*/
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struct msgmap {
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short next; /* next segment in buffer */
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/* -1 -> available */
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/* 0..(MSGSEG-1) -> index of next segment */
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};
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extern struct msginfo msginfo;
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extern char *msgpool; /* MSGMAX byte long msg buffer pool */
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extern struct msgmap *msgmaps; /* MSGSEG msgmap structures */
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extern struct __msg *msghdrs; /* MSGTQL msg headers */
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extern struct msqid_ds *msqids; /* MSGMNI msqid_ds struct's */
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#define MSG_LOCKED 01000 /* Is this msqid_ds locked? */
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#endif /* _KERNEL */
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#ifndef _KERNEL
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#include <sys/cdefs.h>
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__BEGIN_DECLS
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int msgctl __P((int, int, struct msqid_ds *)) __RENAME(__msgctl13);
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int msgget __P((key_t, int));
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int msgsnd __P((int, const void *, size_t, int));
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ssize_t msgrcv __P((int, void *, size_t, long, int));
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__END_DECLS
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#else
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struct proc;
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void msginit __P((void));
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int msgctl1 __P((struct proc *, int, int, struct msqid_ds *));
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#endif /* !_KERNEL */
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#endif /* !_SYS_MSG_H_ */
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