linux-kernel - [PATCH v5 04/68] init_link(): turn into a trivial wrapper for do

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Message-ID: <20260114043310.3885463-5-viro@zeniv.linux.org.uk>
Date: Wed, 14 Jan 2026 04:32:06 +0000
From: Al Viro <viro@...iv.linux.org.uk>
To: linux-fsdevel@...r.kernel.org
Cc: Linus Torvalds <torvalds@...ux-foundation.org>,
	Christian Brauner <brauner@...nel.org>,
	Jan Kara <jack@...e.cz>,
	Mateusz Guzik <mjguzik@...il.com>,
	Paul Moore <paul@...l-moore.com>,
	Jens Axboe <axboe@...nel.dk>,
	audit@...r.kernel.org,
	io-uring@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH v5 04/68] init_link(): turn into a trivial wrapper for do_linkat()

Signed-off-by: Al Viro <viro@...iv.linux.org.uk>
---
 fs/init.c | 33 ++-------------------------------
 1 file changed, 2 insertions(+), 31 deletions(-)

diff --git a/fs/init.c b/fs/init.c
index 27e149a4e8ce..da6500d2ee98 100644
--- a/fs/init.c
+++ b/fs/init.c
@@ -145,37 +145,8 @@ int __init init_mknod(const char *filename, umode_t mode, unsigned int dev)
 
 int __init init_link(const char *oldname, const char *newname)
 {
-	struct dentry *new_dentry;
-	struct path old_path, new_path;
-	struct mnt_idmap *idmap;
-	int error;
-
-	error = kern_path(oldname, 0, &old_path);
-	if (error)
-		return error;
-
-	new_dentry = start_creating_path(AT_FDCWD, newname, &new_path, 0);
-	error = PTR_ERR(new_dentry);
-	if (IS_ERR(new_dentry))
-		goto out;
-
-	error = -EXDEV;
-	if (old_path.mnt != new_path.mnt)
-		goto out_dput;
-	idmap = mnt_idmap(new_path.mnt);
-	error = may_linkat(idmap, &old_path);
-	if (unlikely(error))
-		goto out_dput;
-	error = security_path_link(old_path.dentry, &new_path, new_dentry);
-	if (error)
-		goto out_dput;
-	error = vfs_link(old_path.dentry, idmap, new_path.dentry->d_inode,
-			 new_dentry, NULL);
-out_dput:
-	end_creating_path(&new_path, new_dentry);
-out:
-	path_put(&old_path);
-	return error;
+	return do_linkat(AT_FDCWD, getname_kernel(oldname),
+			 AT_FDCWD, getname_kernel(newname), 0);
 }
 
 int __init init_symlink(const char *oldname, const char *newname)
-- 
2.47.3