linux-kernel - Re: [PATCH] nilfs2: unbreak compat ioctl

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Message-ID: <1321180334.1624.23.camel@localhost.localdomain>
Date:	Sun, 13 Nov 2011 11:32:14 +0100
From:	Thomas Meyer <thomas@...3r.de>
To:	Ryusuke Konishi <konishi.ryusuke@....ntt.co.jp>
Cc:	linux-kernel@...r.kernel.org, linux-nilfs@...r.kernel.org
Subject: Re: [PATCH] nilfs2: unbreak compat ioctl

Am Donnerstag, den 10.11.2011, 12:49 +0900 schrieb Ryusuke Konishi:
> But, this patch looks to prevent compat_sys_ioctl() from handling
> other compatible ioctls that compat_ioctl_check_table function
> detects.  For instance, fiemap (FS_IOC_FIEMAP) is handled via the
> function.
> 
> I think we should only redirect own ioctl commands
> (i.e. NILFS_IOCTL_xxxx) to the nilfs_ioctl() call.

Hello Ryusuke,

something like this?

kind regards
thomas

>From 241cc9e8c7d6b8218d307117b0d4a0dabbe1d94e Mon Sep 17 00:00:00 2001
From: Thomas Meyer <thomas@...3r.de>
Date: Mon, 7 Nov 2011 20:59:02 +0100
Subject: [PATCH] nilfs2: unbreak compat ioctl

I guess commit 828b1c50ae11e6dda68f8dfefe43b74c7182b157 incidentally broke
all other NILFS compat ioctls. make them work again.

Signed-off-by: Thomas Meyer <thomas@...3r.de>
---
 fs/nilfs2/ioctl.c |   13 +++++++++++++
 1 files changed, 13 insertions(+), 0 deletions(-)

diff --git a/fs/nilfs2/ioctl.c b/fs/nilfs2/ioctl.c
index 41d6743..3e65427 100644
--- a/fs/nilfs2/ioctl.c
+++ b/fs/nilfs2/ioctl.c
@@ -842,6 +842,19 @@ long nilfs_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
 	case FS_IOC32_GETVERSION:
 		cmd = FS_IOC_GETVERSION;
 		break;
+	case NILFS_IOCTL_CHANGE_CPMODE:
+	case NILFS_IOCTL_DELETE_CHECKPOINT:
+	case NILFS_IOCTL_GET_CPINFO:
+	case NILFS_IOCTL_GET_CPSTAT:
+	case NILFS_IOCTL_GET_SUINFO:
+	case NILFS_IOCTL_GET_SUSTAT:
+	case NILFS_IOCTL_GET_VINFO:
+	case NILFS_IOCTL_GET_BDESCS:
+	case NILFS_IOCTL_CLEAN_SEGMENTS:
+	case NILFS_IOCTL_SYNC:
+	case NILFS_IOCTL_RESIZE:
+	case NILFS_IOCTL_SET_ALLOC_RANGE:
+		break;
 	default:
 		return -ENOIOCTLCMD;
 	}
-- 
1.7.7.1


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