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Implement following POSIX message queue interfaces:

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mq_close, mq_getattr, mq_receive, mq_send.
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David Xu 2005-11-26 13:01:17 +00:00
parent c6678cae14
commit 8635f5a162
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=152831
2 changed files with 74 additions and 1 deletions
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2
lib/libc/sys/Makefile.inc
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@ -18,7 +18,7 @@
.endif
# Sources common to both syscall interfaces:
SRCS+= ftruncate.c lseek.c mmap.c pread.c pwrite.c truncate.c __error.c
SRCS+= ftruncate.c lseek.c mmap.c mq.c pread.c pwrite.c truncate.c __error.c
# Add machine dependent asm sources:
SRCS+=${MDASM}

73
lib/libc/sys/mq.c Normal file
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@ -0,0 +1,73 @@
/*-
* Copyright (c) 2005 David Xu <davidxu@freebsd.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.
*
* $FreeBSD$
*/
#include <sys/cdefs.h>
#include <sys/types.h>
#include <sys/mqueue.h>
#include <stddef.h>
extern int __sys_mq_setattr(mqd_t,
const struct mq_attr *__restrict, struct mq_attr *__restrict);
extern int __sys_close(int fd);
extern int __sys_mq_timedsend(mqd_t mqdes, const char *buf, size_t len,
unsigned prio, const struct timespec *);
extern ssize_t __sys_mq_timedreceive(mqd_t, char *__restrict, size_t,
unsigned *__restrict, const struct timespec *__restrict);
__weak_reference(__mq_close, mq_close);
__weak_reference(__mq_close, _mq_close);
__weak_reference(__mq_getattr, mq_getattr);
__weak_reference(__mq_getattr, _mq_getattr);
__weak_reference(__mq_receive, mq_receive);
__weak_reference(__mq_receive, _mq_receive);
__weak_reference(__mq_send, mq_send);
__weak_reference(__mq_send, _mq_send);
int
__mq_close(int mqdes)
{
return __sys_close(mqdes);
}
int
__mq_getattr(mqd_t mqdes, struct mq_attr *mqstat)
{
return __sys_mq_setattr(mqdes, NULL, mqstat);
}
ssize_t
__mq_receive(mqd_t mqdes, char *buf, size_t len, unsigned *prio)
{
return __sys_mq_timedreceive(mqdes, buf, len, prio, NULL);
}
int
__mq_send(mqd_t mqdes, const char *buf, size_t len, unsigned prio)
{
return __sys_mq_timedsend(mqdes, buf, len, prio, NULL);
}