linux-kernel - [PATCH 2/5] fsnotify: have fsnotify_move take a struct qstr instead of a string

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20190426182847.25088-3-jlayton@kernel.org>
Date:   Fri, 26 Apr 2019 14:28:44 -0400
From:   Jeff Layton <jlayton@...nel.org>
To:     viro@...iv.linux.org.uk
Cc:     linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
        miklos@...redi.hu, gregkh@...uxfoundation.org, tj@...nel.org,
        jack@...e.cz, amir73il@...il.com, paul@...l-moore.com,
        eparis@...hat.com, linux-audit@...hat.com, rafael@...nel.org
Subject: [PATCH 2/5] fsnotify: have fsnotify_move take a struct qstr instead of a string

With this, ovl_lookup_real_one can skip the strlen call.

Signed-off-by: Jeff Layton <jlayton@...nel.org>
---
 fs/debugfs/inode.c       |  2 +-
 fs/namei.c               |  4 ++--
 include/linux/fsnotify.h | 11 +++++------
 3 files changed, 8 insertions(+), 9 deletions(-)

diff --git a/fs/debugfs/inode.c b/fs/debugfs/inode.c
index 37c0a025d7e8..5dbeefa69a58 100644
--- a/fs/debugfs/inode.c
+++ b/fs/debugfs/inode.c
@@ -824,7 +824,7 @@ struct dentry *debugfs_rename(struct dentry *old_dir, struct dentry *old_dentry,
 		goto exit;
 	}
 	d_move(old_dentry, dentry);
-	fsnotify_move(d_inode(old_dir), d_inode(new_dir), old_name.name.name,
+	fsnotify_move(d_inode(old_dir), d_inode(new_dir), &old_name.name,
 		d_is_dir(old_dentry),
 		NULL, old_dentry);
 	release_dentry_name_snapshot(&old_name);
diff --git a/fs/namei.c b/fs/namei.c
index c96713077326..5ebd64b21970 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -4498,10 +4498,10 @@ int vfs_rename(struct inode *old_dir, struct dentry *old_dentry,
 		inode_unlock(target);
 	dput(new_dentry);
 	if (!error) {
-		fsnotify_move(old_dir, new_dir, old_name.name.name, is_dir,
+		fsnotify_move(old_dir, new_dir, &old_name.name, is_dir,
 			      !(flags & RENAME_EXCHANGE) ? target : NULL, old_dentry);
 		if (flags & RENAME_EXCHANGE) {
-			fsnotify_move(new_dir, old_dir, old_dentry->d_name.name,
+			fsnotify_move(new_dir, old_dir, &old_dentry->d_name,
 				      new_is_dir, NULL, new_dentry);
 		}
 	}
diff --git a/include/linux/fsnotify.h b/include/linux/fsnotify.h
index e09cfff69bb2..2de90a7e388b 100644
--- a/include/linux/fsnotify.h
+++ b/include/linux/fsnotify.h
@@ -102,7 +102,7 @@ static inline void fsnotify_link_count(struct inode *inode)
  * fsnotify_move - file old_name at old_dir was moved to new_name at new_dir
  */
 static inline void fsnotify_move(struct inode *old_dir, struct inode *new_dir,
-				 const unsigned char *old_name,
+				 const struct qstr *old_name,
 				 int isdir, struct inode *target,
 				 struct dentry *moved)
 {
@@ -111,7 +111,6 @@ static inline void fsnotify_move(struct inode *old_dir, struct inode *new_dir,
 	__u32 old_dir_mask = FS_MOVED_FROM;
 	__u32 new_dir_mask = FS_MOVED_TO;
 	__u32 mask = FS_MOVE_SELF;
-	const unsigned char *new_name = moved->d_name.name;
 
 	if (old_dir == new_dir)
 		old_dir_mask |= FS_DN_RENAME;
@@ -122,10 +121,10 @@ static inline void fsnotify_move(struct inode *old_dir, struct inode *new_dir,
 		mask |= FS_ISDIR;
 	}
 
-	fsnotify(old_dir, old_dir_mask, source, FSNOTIFY_EVENT_INODE, old_name,
-		 fs_cookie);
-	fsnotify(new_dir, new_dir_mask, source, FSNOTIFY_EVENT_INODE, new_name,
-		 fs_cookie);
+	fsnotify(old_dir, old_dir_mask, source, FSNOTIFY_EVENT_INODE,
+		 old_name->name, fs_cookie);
+	fsnotify(new_dir, new_dir_mask, source, FSNOTIFY_EVENT_INODE,
+		 moved->d_name.name, fs_cookie);
 
 	if (target)
 		fsnotify_link_count(target);
-- 
2.20.1