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
119 lines
3.6 KiB
C
119 lines
3.6 KiB
C
/* $NetBSD: mqueue.h,v 1.16 2011/11/21 04:36:05 christos Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 2007-2009 Mindaugas Rasiukevicius <rmind at NetBSD org>
|
|
* All rights reserved.
|
|
*
|
|
* 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.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
|
|
*/
|
|
|
|
#ifndef _SYS_MQUEUE_H_
|
|
#define _SYS_MQUEUE_H_
|
|
|
|
/* Maximal number of mqueue descriptors, that process could open */
|
|
#define MQ_OPEN_MAX 512
|
|
|
|
/* Maximal priority of the message */
|
|
#define MQ_PRIO_MAX 32
|
|
|
|
struct mq_attr {
|
|
long mq_flags; /* Flags of message queue */
|
|
long mq_maxmsg; /* Maximum number of messages */
|
|
long mq_msgsize; /* Maximum size of the message */
|
|
long mq_curmsgs; /* Count of the queued messages */
|
|
};
|
|
|
|
/* Internal kernel data */
|
|
#ifdef _KERNEL
|
|
|
|
#include <sys/condvar.h>
|
|
#include <sys/mutex.h>
|
|
#include <sys/queue.h>
|
|
#include <sys/selinfo.h>
|
|
#include <sys/types.h>
|
|
#include <sys/param.h>
|
|
|
|
/*
|
|
* Flags below are used in mq_flags for internal purposes.
|
|
* This is permitted according to POSIX.
|
|
*/
|
|
|
|
/* Message queue is unlinked */
|
|
#define MQ_UNLINKED 0x10000000
|
|
/* There are receive-waiters */
|
|
#define MQ_RECEIVE 0x20000000
|
|
|
|
/* Maximal length of mqueue name */
|
|
#define MQ_NAMELEN (KERNEL_NAME_MAX + 1)
|
|
|
|
/* Default size of the message */
|
|
#define MQ_DEF_MSGSIZE 1024
|
|
|
|
/* Size/bits and index of reserved queue */
|
|
#define MQ_PQSIZE 32
|
|
#define MQ_PQRESQ 0
|
|
|
|
/* Structure of the message queue. */
|
|
typedef struct mqueue {
|
|
char * mq_name;
|
|
kmutex_t mq_mtx;
|
|
kcondvar_t mq_send_cv;
|
|
kcondvar_t mq_recv_cv;
|
|
struct mq_attr mq_attrib;
|
|
/* Notification */
|
|
struct selinfo mq_rsel;
|
|
struct selinfo mq_wsel;
|
|
struct sigevent mq_sig_notify;
|
|
struct proc * mq_notify_proc;
|
|
/* Permissions */
|
|
mode_t mq_mode;
|
|
uid_t mq_euid;
|
|
gid_t mq_egid;
|
|
/* Reference counter, queue array and bitmap */
|
|
u_int mq_refcnt;
|
|
TAILQ_HEAD(, mq_msg) mq_head[1 + MQ_PQSIZE];
|
|
uint32_t mq_bitmap;
|
|
/* Entry of the global list */
|
|
LIST_ENTRY(mqueue) mq_list;
|
|
/* Time stamps */
|
|
struct timespec mq_atime;
|
|
struct timespec mq_mtime;
|
|
struct timespec mq_btime;
|
|
} mqueue_t;
|
|
|
|
/* Structure of the message. */
|
|
typedef struct mq_msg {
|
|
TAILQ_ENTRY(mq_msg) msg_queue;
|
|
size_t msg_len;
|
|
u_int msg_prio;
|
|
uint8_t msg_ptr[1];
|
|
} mq_msg_t;
|
|
|
|
/* Prototypes */
|
|
void mqueue_print_list(void (*pr)(const char *, ...) __printflike(1, 2));
|
|
int mq_send1(mqd_t, const char *, size_t, u_int, struct timespec *);
|
|
int mq_recv1(mqd_t, void *, size_t, u_int *, struct timespec *, ssize_t *);
|
|
|
|
#endif /* _KERNEL */
|
|
|
|
#endif /* _SYS_MQUEUE_H_ */
|