linux-kernel - [PATCH] [21/30] x86_64: Print type and size correctly for unknown compat ioctls

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Message-Id: <20070501035819.80FFC13CAF@wotan.suse.de>
Date:	Tue,  1 May 2007 05:58:19 +0200 (CEST)
From:	Andi Kleen <ak@...e.de>
To:	patches@...-64.org, linux-kernel@...r.kernel.org
Subject: [PATCH] [21/30] x86_64: Print type and size correctly for unknown compat ioctls


Signed-off-by: Andi Kleen <ak@...e.de>

---
 fs/compat.c |    5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

Index: linux/fs/compat.c
===================================================================
--- linux.orig/fs/compat.c
+++ linux/fs/compat.c
@@ -371,13 +371,14 @@ static void compat_ioctl_error(struct fi
 			fn = "?";
 	}
 
-	sprintf(buf,"'%c'", (cmd>>24) & 0x3f);
+	sprintf(buf,"'%c'", (cmd>>_IOC_TYPESHIFT) & _IOC_TYPEMASK);
 	if (!isprint(buf[1]))
 		sprintf(buf, "%02x", buf[1]);
 	compat_printk("ioctl32(%s:%d): Unknown cmd fd(%d) "
-			"cmd(%08x){%s} arg(%08x) on %s\n",
+			"cmd(%08x){t:%s;sz:%u} arg(%08x) on %s\n",
 			current->comm, current->pid,
 			(int)fd, (unsigned int)cmd, buf,
+			(cmd >> _IOC_SIZESHIFT) & _IOC_SIZEMASK,
 			(unsigned int)arg, fn);
 
 	if (path)
-
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