1 files changed, 73 insertions, 0 deletions
diff --git a/nptl/sysdeps/unix/sysv/linux/msgrcv.c b/nptl/sysdeps/unix/sysv/linux/msgrcv.c
new file mode 100644
index 0000000000..af1953f5a0
--- /dev/null
+++ b/nptl/sysdeps/unix/sysv/linux/msgrcv.c
@@ -0,0 +1,73 @@
+/* Copyright (C) 1995, 1997, 1998, 2000, 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, August 1995.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <errno.h>
+#include <sys/msg.h>
+#include <ipc_priv.h>
+
+#include <sysdep.h>
+#include <sys/syscall.h>
+#include <nptl/pthreadP.h>
+#include <tls.h>
+
+#include <bp-checks.h>
+
+/* Kludge to work around Linux' restriction of only up to five
+   arguments to a system call.  */
+struct ipc_kludge
+  {
+    void *__unbounded msgp;
+    long int msgtyp;
+  };
+
+
+int
+__libc_msgrcv (msqid, msgp, msgsz, msgtyp, msgflg)
+     int msqid;
+     void *msgp;
+     size_t msgsz;
+     long int msgtyp;
+     int msgflg;
+{
+  /* The problem here is that Linux' calling convention only allows up to
+     fives parameters to a system call.  */
+  struct ipc_kludge tmp;
+
+  tmp.msgp = CHECK_N (msgp, msgsz);
+  tmp.msgtyp = msgtyp;
+
+#ifndef NOT_IN_libc
+  if (__builtin_expect (THREAD_GETMEM (THREAD_SELF,
+				       header.data.multiple_threads) == 0, 1))
+    return INLINE_SYSCALL (ipc, 5, IPCOP_msgrcv, msqid, msgsz, msgflg,
+			   __ptrvalue (&tmp));
+
+  int oldtype = LIBC_CANCEL_ASYNC ();
+#endif
+
+  int result = INLINE_SYSCALL (ipc, 5, IPCOP_msgrcv, msqid, msgsz, msgflg,
+			       __ptrvalue (&tmp));
+
+#ifndef NOT_IN_libc
+  LIBC_CANCEL_RESET (oldtype);
+#endif
+
+  return result;
+}
+weak_alias (__libc_msgrcv, msgrcv)