linux-kernel - [PATCH] Revert "debugfs: inode: debugfs_create

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Message-Id: <20180611092810.21886-1-tmricht@linux.ibm.com>
Date:   Mon, 11 Jun 2018 11:28:10 +0200
From:   Thomas Richter <tmricht@...ux.ibm.com>
To:     linux-kernel@...r.kernel.org
Cc:     efault@....de, Thomas Richter <tmricht@...ux.ibm.com>
Subject: [PATCH] Revert "debugfs: inode: debugfs_create_dir uses mode permission from parent"

This reverts commit 95cde3c59966f6371b6bcd9e4e2da2ba64ee9775.
It breaks the ioctl(KVM_CREATE_VM) interface.

Signed-off-by: Thomas Richter <tmricht@...ux.ibm.com>
---
 fs/debugfs/inode.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/fs/debugfs/inode.c b/fs/debugfs/inode.c
index a913b12fc7f8..13b01351dd1c 100644
--- a/fs/debugfs/inode.c
+++ b/fs/debugfs/inode.c
@@ -512,9 +512,7 @@ struct dentry *debugfs_create_dir(const char *name, struct dentry *parent)
 	if (unlikely(!inode))
 		return failed_creating(dentry);
 
-	if (!parent)
-		parent = debugfs_mount->mnt_root;
-	inode->i_mode = S_IFDIR | ((d_inode(parent)->i_mode & 0770));
+	inode->i_mode = S_IFDIR | S_IRWXU | S_IRUGO | S_IXUGO;
 	inode->i_op = &simple_dir_inode_operations;
 	inode->i_fop = &simple_dir_operations;
 
-- 
2.14.3