Implement following POSIX message queue interfaces:

mq_close, mq_getattr, mq_receive, mq_send.

2 files changed, 74 insertions, 1 deletions

diff --git a/lib/libc/sys/Makefile.inc b/lib/libc/sys/Makefile.inc
index ca719ae..b82e7ed 100644
--- a/lib/libc/sys/Makefile.inc
+++ b/lib/libc/sys/Makefile.inc
@@ -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}
diff --git a/lib/libc/sys/mq.c b/lib/libc/sys/mq.c
new file mode 100644
index 0000000..170e502
--- /dev/null
+++ b/lib/libc/sys/mq.c
@@ -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);
+}