6c8f7fc3ba
. add all sys/sys headers not already present to help compiling . take netbsd dirent.h and struct dirent; main result is introducing d_type and d_namlen that have to be set by getdents() in all FS code implementing it . d_off is gone . alignment of the struct has become 8 bytes instead of 4 . remove _MAX_BLOCK_SIZE, _MIN_BLOCK_SIZE, _STATIC_BLOCK_SIZE . libminlib: cleanup unused yet duplicate code . mfs: throw out the long-broken v1, v2 support . new test for dirent contents filled by getdents() Change-Id: I1459755c7ba5e5d1c9396d3a587ce6e63ddc283e
221 lines
6.8 KiB
C
221 lines
6.8 KiB
C
/* $NetBSD: msg.h,v 1.24 2009/01/19 19:39:41 christos Exp $ */
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/*-
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* Copyright (c) 1999, 2007 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, and by Andrew Doran.
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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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*
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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/featuretest.h>
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#include <sys/ipc.h>
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#ifdef _KERNEL
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#include <sys/condvar.h>
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#include <sys/mutex.h>
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#endif
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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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#if defined(_NETBSD_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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uint64_t msg_qnum;
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uint64_t msg_qbytes;
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uint64_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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typedef struct kmsq {
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struct msqid_ds msq_u;
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kcondvar_t msq_cv;
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} kmsq_t;
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extern struct msginfo msginfo;
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extern kmsq_t *msqs; /* MSGMNI queues */
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extern kmutex_t msgmutex;
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#define MSG_LOCKED 01000 /* Is this msqid_ds locked? */
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#define SYSCTL_FILL_MSG(src, dst) do { \
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SYSCTL_FILL_PERM((src).msg_perm, (dst).msg_perm); \
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(dst).msg_qnum = (src).msg_qnum; \
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(dst).msg_qbytes = (src).msg_qbytes; \
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(dst)._msg_cbytes = (src)._msg_cbytes; \
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(dst).msg_lspid = (src).msg_lspid; \
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(dst).msg_lrpid = (src).msg_lrpid; \
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(dst).msg_stime = (src).msg_stime; \
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(dst).msg_rtime = (src).msg_rtime; \
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(dst).msg_ctime = (src).msg_ctime; \
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} while (/*CONSTCOND*/ 0)
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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(int, int, struct msqid_ds *) __RENAME(__msgctl50);
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int msgget(key_t, int);
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int msgsnd(int, const void *, size_t, int);
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ssize_t msgrcv(int, void *, size_t, long, int);
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__END_DECLS
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#else
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#include <sys/systm.h>
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struct proc;
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void msginit(void);
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int msgctl1(struct lwp *, int, int, struct msqid_ds *);
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int msgsnd1(struct lwp *, int, const char *, size_t, int, size_t,
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copyin_t);
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int msgrcv1(struct lwp *, int, char *, size_t, long, int, size_t,
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copyout_t, register_t *);
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#endif /* !_KERNEL */
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#endif /* !_SYS_MSG_H_ */
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