linux-kernel - [PATCH] ext4: Add xattr commands to compat ioctl handler

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Message-Id: <20210226221441.70071-1-sarthakkukreti@chromium.org>
Date:   Fri, 26 Feb 2021 14:14:41 -0800
From:   Sarthak Kukreti <sarthakkukreti@...omium.org>
To:     Theodore Ts'o <tytso@....edu>,
        Andreas Dilger <adilger.kernel@...ger.ca>
Cc:     linux-ext4@...r.kernel.org, linux-kernel@...r.kernel.org,
        Gwendal Grignou <gwendal@...omium.org>,
        Sarthak Kukreti <sarthakkukreti@...omium.org>
Subject: [PATCH] ext4: Add xattr commands to compat ioctl handler

This allows 32-bit userspace utils to use FS_IOC_FSGETXATTR and 
FS_IOC_FSSETXATTR on a 64-bit kernel.

Signed-off-by: Sarthak Kukreti <sarthakkukreti@...omium.org>
---
 fs/ext4/ioctl.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/fs/ext4/ioctl.c b/fs/ext4/ioctl.c
index f0381876a7e5b..055c26296ab46 100644
--- a/fs/ext4/ioctl.c
+++ b/fs/ext4/ioctl.c
@@ -1371,6 +1371,8 @@ long ext4_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 			return -EFAULT;
 		return ext4_ioctl_group_add(file, &input);
 	}
+	case EXT4_IOC_FSGETXATTR:
+	case EXT4_IOC_FSSETXATTR:
 	case EXT4_IOC_MOVE_EXT:
 	case EXT4_IOC_RESIZE_FS:
 	case FITRIM:
-- 
2.30.1.766.gb4fecdf3b7-goog