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

This is required to compile util-linux

2 files changed, 60 insertions, 1 deletions

diff --git a/libc/misc/sysvipc/Makefile b/libc/misc/sysvipc/Makefile
index d94531788..8280137ca 100644
--- a/libc/misc/sysvipc/Makefile
+++ b/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
diff --git a/libc/misc/sysvipc/msgq.c b/libc/misc/sysvipc/msgq.c
new file mode 100644
index 000000000..f373c1611
--- /dev/null
+++ b/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
+