linux-kernel - [PATCH 2/6] UML - Use 64-bits for block size on x86

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Date:	Fri, 17 Aug 2007 15:43:40 -0400
From:	Jeff Dike <jdike@...toit.com>
To:	Andrew Morton <akpm@...l.org>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	uml-devel <user-mode-linux-devel@...ts.sourceforge.net>,
	Nicolas George <nicolas.george@...malesup.org>
Subject: [PATCH 2/6] UML - Use 64-bits for block size on x86_64

The BLKGETSIZE ioctl expects a pointer to a long, os_file_size was providing
an int. Therefore, ubd access to host block devices caused a segmentation
fault on 64 bits systems.

Signed-off-by: Nicolas George <nicolas.george@...malesup.org>
Signed-off-by: Jeff Dike <jdike@...ux.intel.com>
--
 arch/um/os-Linux/file.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

Index: linux-2.6.22/arch/um/os-Linux/file.c
===================================================================
--- linux-2.6.22.orig/arch/um/os-Linux/file.c	2007-08-17 13:36:35.000000000 -0400
+++ linux-2.6.22/arch/um/os-Linux/file.c	2007-08-17 13:37:55.000000000 -0400
@@ -296,7 +296,8 @@ int os_file_size(char *file, unsigned lo
 	}
 
 	if(S_ISBLK(buf.ust_mode)){
-		int fd, blocks;
+		int fd;
+		long blocks;
 
 		fd = os_open_file(file, of_read(OPENFLAGS()), 0);
 		if(fd < 0){
-
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