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[PATCH] Fix msgrcv() on sparc64
- From: Aurelien Jarno <aurelien at aurel32 dot net>
- To: libc-alpha at sourceware dot org
- Cc: "David S. Miller" <davem at davemloft dot net>
- Date: Fri, 26 Feb 2010 22:45:31 +0100
- Subject: [PATCH] Fix msgrcv() on sparc64
msgrcv() does not work on sparc64, as it passes the 6th argument using
the ipc kludge, while the kernel waits for a 6 arguments syscall. This
patches fixes the problem by using a sparc64 specific version of
msgrcv.c.
2010-02-26 Aurelien Jarno <aurelien@aurel32.net>
* sysdeps/unix/sysv/linux/sparc/sparc64/msgrcv.c: New file.
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/sparc/sparc64/msgrcv.c
@@ -0,0 +1,49 @@
+/* Copyright (C) 2010 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 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-cancel.h>
+#include <sys/syscall.h>
+
+#include <bp-checks.h>
+
+ssize_t
+__libc_msgrcv (msqid, msgp, msgsz, msgtyp, msgflg)
+ int msqid;
+ void *msgp;
+ size_t msgsz;
+ long int msgtyp;
+ int msgflg;
+{
+ if (SINGLE_THREAD_P)
+ return INLINE_SYSCALL (ipc, 6, IPCOP_msgrcv, msqid, msgsz, msgflg,
+ CHECK_N (msgp, msgsz), msgtyp);
+
+ int oldtype = LIBC_CANCEL_ASYNC ();
+
+ ssize_t result = INLINE_SYSCALL (ipc, 6, IPCOP_msgrcv, msqid, msgsz, msgflg,
+ CHECK_N (msgp, msgsz), msgtyp);
+
+ LIBC_CANCEL_RESET (oldtype);
+
+ return result;
+}
+weak_alias (__libc_msgrcv, msgrcv)
--
Aurelien Jarno GPG: 1024D/F1BCDB73
aurelien@aurel32.net http://www.aurel32.net