Add in message queue support, based on work from <tapu@371.net>.

This is required to compile util-linux

include/sys/msg.h

@@ -0,0 +1,75 @@
+/* Copyright (C) 1995, 1996, 1997, 1999, 2000 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#ifndef _SYS_MSG_H
+#define _SYS_MSG_H
+
+#include <features.h>
+
+/* Get common definition of System V style IPC.  */
+#include <sys/ipc.h>
+
+/* Get system dependent definition of `struct msqid_ds' and more.  */
+#include <bits/msq.h>
+
+/* Define types required by the standard.  */
+#define	__need_time_t
+#include <time.h>
+
+#ifndef __pid_t_defined
+typedef __pid_t pid_t;
+# define __pid_t_defined
+#endif
+
+#ifndef __ssize_t_defined
+typedef __ssize_t ssize_t;
+# define __ssize_t_defined
+#endif
+
+/* The following System V style IPC functions implement a message queue
+   system.  The definition is found in XPG2.  */
+
+#ifdef __USE_GNU
+/* Template for struct to be used as argument for `msgsnd' and `msgrcv'.  */
+struct msgbuf
+  {
+    long int mtype;		/* type of received/sent message */
+    char mtext[1];		/* text of the message */
+  };
+#endif
+
+
+__BEGIN_DECLS
+
+/* Message queue control operation.  */
+extern int msgctl (int __msqid, int __cmd, struct msqid_ds *__buf);
+
+/* Get messages queue.  */
+extern int msgget (key_t __key, int __msgflg);
+
+/* Receive message from message queue.  */
+extern int msgrcv (int __msqid, void *__msgp, size_t __msgsz,
+		   long int __msgtyp, int __msgflg);
+
+/* Send message to message queue.  */
+extern int msgsnd (int __msqid, __const void *__msgp, size_t __msgsz,
+		   int __msgflg);
+
+__END_DECLS
+
+#endif /* sys/msg.h */

include/sys/types.h

@@ -95,6 +95,7 @@ typedef __off64_t off64_t;
 #ifndef pid_t
 typedef __pid_t pid_t;
 # define pid_t pid_t
+# define __pid_t_defined
 #endif
 
 #if defined __USE_SVID || defined __USE_XOPEN
@@ -105,6 +106,7 @@ typedef __id_t id_t;
 #ifndef ssize_t
 typedef __ssize_t ssize_t;
 # define ssize_t ssize_t
+# define __ssize_t_defined
 #endif
 
 #ifdef	__USE_BSD

libc/misc/sysvipc/Makefile

@@ -31,10 +31,13 @@ MOBJ=semget.o semctl.o semop.o
 MSRC2=shm.c
 MOBJ2=shmat.o shmctl.o shmdt.o shmget.o
 
+MSRC3=msgq.c
+MOBJ3=msgctl.o msgget.o msgrcv.o msgsnd.o
+
 CSRC = ftok.c 
 COBJS=$(patsubst %.c,%.o, $(CSRC))
 
-OBJS=$(MOBJ) $(MOBJ2) $(COBJS)
+OBJS=$(MOBJ) $(MOBJ2) $(MOBJ3) $(COBJS)
 
 
 all: $(OBJS) $(LIBC)
@@ -52,6 +55,10 @@ $(MOBJ2): $(MSRC2)
 	$(CC) $(CFLAGS) -DL_$* $< -c -o $*.o
 	$(STRIPTOOL) -x -R .note -R .comment $*.o
 
+$(MOBJ3): $(MSRC3)
+	$(CC) $(CFLAGS) -DL_$* $< -c -o $*.o
+	$(STRIPTOOL) -x -R .note -R .comment $*.o
+
 $(COBJS): %.o : %.c
 	$(CC) $(CFLAGS) -c $< -o $@
 	$(STRIPTOOL) -x -R .note -R .comment $*.o

libc/misc/sysvipc/msgq.c

@@ -0,0 +1,52 @@
+#include <errno.h>
+#include <sys/msg.h>
+#include "ipc.h"
+
+
+#ifdef L_msgctl
+/* Message queue control operation.  */
+int msgctl (int msqid, int cmd, struct msqid_ds *buf)
+{
+    return __ipc(IPCOP_msgctl ,msqid ,cmd ,0 ,buf);
+}
+#endif
+
+
+#ifdef L_msgget
+/* Get messages queue.  */
+int msgget (key_t key, int msgflg)
+{
+    return __ipc(IPCOP_msgget ,key ,msgflg ,0 ,0);
+}
+#endif
+
+
+struct new_msg_buf{
+    struct msgbuf * oldmsg;
+    long int r_msgtyp;       /* the fifth arg of __ipc */
+};
+/* Receive message from message queue.  */
+
+
+#ifdef L_msgrcv
+int msgrcv (int msqid, void *msgp, size_t msgsz,
+	long int msgtyp, int msgflg)
+{
+    struct new_msg_buf temp;
+
+    temp.r_msgtyp = msgtyp;
+    temp.oldmsg = msgp;
+    return __ipc(IPCOP_msgrcv ,msqid ,msgsz ,msgflg ,&temp);
+}
+#endif
+
+
+
+#ifdef L_msgsnd
+/* Send message to message queue.  */
+int msgsnd (int msqid, const void *msgp, size_t msgsz, int msgflg)
+{
+    return __ipc(IPCOP_msgsnd, msqid, msgsz, msgflg, (void *)msgp);
+}
+#endif
+