linux-kernel - [PATCH 1/2] f2fs: fix to enable missing ioctl interfaces in ->compat

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Date:	Tue, 10 Nov 2015 18:44:20 +0800
From:	Chao Yu <chao2.yu@...sung.com>
To:	Jaegeuk Kim <jaegeuk@...nel.org>
Cc:	linux-f2fs-devel@...ts.sourceforge.net,
	linux-kernel@...r.kernel.org
Subject: [PATCH 1/2] f2fs: fix to enable missing ioctl interfaces in
 ->compat_ioctl

In 64-bit kernel f2fs can supports 32-bit ioctl system call by identifying
encoded code which is converted from 32-bit one to 64-bit one in
->compat_ioctl.

When we introduced new interfaces in ->ioctl, we forgot to enable them in
->compat_ioctl, so enable them for fixing.

Signed-off-by: Chao Yu <chao2.yu@...sung.com>
---
 fs/f2fs/f2fs.h |  1 +
 fs/f2fs/file.c | 16 ++++++++++++++++
 2 files changed, 17 insertions(+)

diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index b01ad51..06497eb 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -259,6 +259,7 @@ static inline bool __has_cursum_space(struct f2fs_summary_block *sum, int size,
  */
 #define F2FS_IOC32_GETFLAGS             FS_IOC32_GETFLAGS
 #define F2FS_IOC32_SETFLAGS             FS_IOC32_SETFLAGS
+#define F2FS_IOC32_GETVERSION		FS_IOC32_GETVERSION
 #endif
 
 struct f2fs_defragment {
diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index 2f39298..3f1026c 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -1901,6 +1901,22 @@ long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 	case F2FS_IOC32_SETFLAGS:
 		cmd = F2FS_IOC_SETFLAGS;
 		break;
+	case F2FS_IOC32_GETVERSION:
+		cmd = F2FS_IOC_GETVERSION;
+		break;
+	case F2FS_IOC_START_ATOMIC_WRITE:
+	case F2FS_IOC_COMMIT_ATOMIC_WRITE:
+	case F2FS_IOC_START_VOLATILE_WRITE:
+	case F2FS_IOC_RELEASE_VOLATILE_WRITE:
+	case F2FS_IOC_ABORT_VOLATILE_WRITE:
+	case F2FS_IOC_SHUTDOWN:
+	case F2FS_IOC_SET_ENCRYPTION_POLICY:
+	case F2FS_IOC_GET_ENCRYPTION_PWSALT:
+	case F2FS_IOC_GET_ENCRYPTION_POLICY:
+	case F2FS_IOC_GARBAGE_COLLECT:
+	case F2FS_IOC_WRITE_CHECKPOINT:
+	case F2FS_IOC_DEFRAGMENT:
+		break;
 	default:
 		return -ENOIOCTLCMD;
 	}
-- 
2.6.1


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