linux-kernel - [RFC][PATCH 11/42] security_file

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Message-Id: <20180711022206.12571-11-viro@ZenIV.linux.org.uk>
Date:   Wed, 11 Jul 2018 03:21:35 +0100
From:   Al Viro <viro@...IV.linux.org.uk>
To:     Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        Miklos Szeredi <mszeredi@...hat.com>
Subject: [RFC][PATCH 11/42] security_file_open(): lose cred argument

From: Al Viro <viro@...iv.linux.org.uk>

Signed-off-by: Al Viro <viro@...iv.linux.org.uk>
---
 fs/open.c                | 2 +-
 include/linux/security.h | 5 ++---
 security/security.c      | 4 ++--
 3 files changed, 5 insertions(+), 6 deletions(-)

diff --git a/fs/open.c b/fs/open.c
index c8fd5126c50e..008a65e82de5 100644
--- a/fs/open.c
+++ b/fs/open.c
@@ -779,7 +779,7 @@ static int do_dentry_open(struct file *f,
 		goto cleanup_all;
 	}
 
-	error = security_file_open(f, f->f_cred);
+	error = security_file_open(f);
 	if (error)
 		goto cleanup_all;
 
diff --git a/include/linux/security.h b/include/linux/security.h
index 63030c85ee19..88d30fc975e7 100644
--- a/include/linux/security.h
+++ b/include/linux/security.h
@@ -309,7 +309,7 @@ void security_file_set_fowner(struct file *file);
 int security_file_send_sigiotask(struct task_struct *tsk,
 				 struct fown_struct *fown, int sig);
 int security_file_receive(struct file *file);
-int security_file_open(struct file *file, const struct cred *cred);
+int security_file_open(struct file *file);
 int security_task_alloc(struct task_struct *task, unsigned long clone_flags);
 void security_task_free(struct task_struct *task);
 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp);
@@ -858,8 +858,7 @@ static inline int security_file_receive(struct file *file)
 	return 0;
 }
 
-static inline int security_file_open(struct file *file,
-				     const struct cred *cred)
+static inline int security_file_open(struct file *file)
 {
 	return 0;
 }
diff --git a/security/security.c b/security/security.c
index 68f46d849abe..235b35f58a65 100644
--- a/security/security.c
+++ b/security/security.c
@@ -970,11 +970,11 @@ int security_file_receive(struct file *file)
 	return call_int_hook(file_receive, 0, file);
 }
 
-int security_file_open(struct file *file, const struct cred *cred)
+int security_file_open(struct file *file)
 {
 	int ret;
 
-	ret = call_int_hook(file_open, 0, file, cred);
+	ret = call_int_hook(file_open, 0, file, file->f_cred);
 	if (ret)
 		return ret;
 
-- 
2.11.0