From ef467338e4a290b0f8978a0701b404e17c5bb048 Mon Sep 17 00:00:00 2001
From: Jeff Johnston <jjohnstn@redhat.com>
Date: Wed, 19 Jun 2002 22:17:33 +0000
Subject: 2002-06-19  Jeff Johnston  <jjohnstn@redhat.com>

        * libc/sys/linux/Makefile.am: Add support for message queue routines,
        ipc routines, and ftok.
        * libc/sys/linux/Makefile.in: Regenerated.
        * libc/sys/linux/ftok.c: New file.
        * libc/sys/linux/ipc.c: Ditto.
        * libc/sys/linux/mq_close.c: Ditto.
        * libc/sys/linux/mq_getattr.c: Ditto.
        * libc/sys/linux/mq_notify.c: Ditto.
        * libc/sys/linux/mq_open.c: Ditto.
        * libc/sys/linux/mq_receive.c: Ditto.
        * libc/sys/linux/mq_send.c: Ditto.
        * libc/sys/linux/mq_setattr.c: Ditto.
        * libc/sys/linux/mq_unlink.c: Ditto.
        * libc/sys/linux/mqlocal.h: Ditto.
        * libc/sys/linux/include/mqueue.h: Ditto.
        * libc/sys/linux/sys/types.h: Define __gid_t_defined and
        __uid_t_defined.
---
 newlib/libc/sys/linux/ipc.c | 87 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 87 insertions(+)
 create mode 100644 newlib/libc/sys/linux/ipc.c

(limited to 'newlib/libc/sys/linux/ipc.c')

diff --git a/newlib/libc/sys/linux/ipc.c b/newlib/libc/sys/linux/ipc.c
new file mode 100644
index 000000000..31e225255
--- /dev/null
+++ b/newlib/libc/sys/linux/ipc.c
@@ -0,0 +1,87 @@
+/* libc/sys/linux/ipc.c - IPC semaphore and message queue functions */
+
+/* Copyright 2002, Red Hat Inc. */
+
+#include <sys/types.h>
+#include <sys/sem.h>
+#include <sys/msg.h>
+#include <stdarg.h>
+
+#include <machine/syscall.h>
+
+#define IPC_64 0x100
+
+#define IPCOP_semop	1
+#define IPCOP_semget	2
+#define IPCOP_semctl	3
+#define IPCOP_msgsnd	11
+#define IPCOP_msgrcv	12
+#define IPCOP_msgget	13
+#define IPCOP_msgctl	14
+
+static _syscall5(int,ipc,int,op,int,arg1,int,arg2,int,arg3,void *,arg4);
+
+int
+semget (key_t key, int nsems, int semflgs)
+{
+  return __libc_ipc(IPCOP_semget, (int)key, nsems, semflgs, NULL);
+}
+
+int
+semctl (int semid, int semnum, int cmd, ...)
+{
+  va_list va;
+  union semun {
+    int val;
+    struct semid_ds *buf;
+    unsigned short  *array;
+  } arg;
+
+  va_start (va, cmd);
+
+  arg = va_arg (va, union semun);
+
+  va_end (va);
+
+  return __libc_ipc(IPCOP_semctl, semid, semnum, cmd | IPC_64, &arg);
+}
+
+int
+semop (int semid, struct sembuf *sops, size_t nsems)
+{
+  return __libc_ipc(IPCOP_semop, semid, (int)nsems, 0, sops);
+}
+
+int
+msgget (key_t key, int msgflg)
+{
+  return __libc_ipc(IPCOP_msgget, (int)key, msgflg, 0, NULL);
+}
+
+int
+msgctl (int msqid, int cmd, struct msqid_ds *buf)
+{
+  return __libc_ipc(IPCOP_msgctl, msqid, cmd | IPC_64, 0, buf);
+}
+
+int
+msgsnd (int msqid, const void *msgp, size_t msgsz, int msgflg)
+{
+  return __libc_ipc(IPCOP_msgsnd, msqid, (int)msgsz, msgflg, (void *)msgp);
+}
+
+int
+msgrcv (int msqid, void *msgp, size_t msgsz, long int msgtyp, int msgflg)
+{
+  /* last argument must contain multiple args */
+  struct {
+    void *msgp;
+    long int msgtyp;
+  } args;
+
+  args.msgp = msgp;
+  args.msgtyp = msgtyp;
+
+  return (ssize_t)__libc_ipc(IPCOP_msgrcv, msqid, (int)msgsz, msgflg, &args);
+}
+
-- 
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