linux-hardening - [PATCH 3/5] fs: Add DEFINE

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Date: Sat,  2 Dec 2023 13:22:13 -0800
From: Kees Cook <keescook@...omium.org>
To: "Guilherme G. Piccoli" <gpiccoli@...lia.com>
Cc: Kees Cook <keescook@...omium.org>,
	Christian Brauner <brauner@...nel.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Alexander Viro <viro@...iv.linux.org.uk>,
	linux-fsdevel@...r.kernel.org,
	Tony Luck <tony.luck@...el.com>,
	linux-kernel@...r.kernel.org,
	linux-hardening@...r.kernel.org
Subject: [PATCH 3/5] fs: Add DEFINE_FREE for struct inode

Allow __free(iput) markings for easier cleanup on inode allocations.

Cc: Christian Brauner <brauner@...nel.org>
Cc: Peter Zijlstra (Intel) <peterz@...radead.org>
Cc: Alexander Viro <viro@...iv.linux.org.uk>
Cc: linux-fsdevel@...r.kernel.org
Signed-off-by: Kees Cook <keescook@...omium.org>
---
 include/linux/fs.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/linux/fs.h b/include/linux/fs.h
index 98b7a7a8c42e..7c3eed3dd1bf 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -2459,6 +2459,8 @@ extern int current_umask(void);
 
 extern void ihold(struct inode * inode);
 extern void iput(struct inode *);
+DEFINE_FREE(iput, struct inode *, if (_T) iput(_T))
+
 int inode_update_timestamps(struct inode *inode, int flags);
 int generic_update_time(struct inode *, int);
 
-- 
2.34.1