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Subject: [PATCH 1/8] autofs: refactor autofs_prepare_pipe()
From:   Ian Kent <raven@themaw.net>
To:     Al Viro <viro@ZenIV.linux.org.uk>,
        Christian Brauner <brauner@kernel.org>
Cc:     autofs mailing list <autofs@vger.kernel.org>,
        linux-fsdevel <linux-fsdevel@vger.kernel.org>,
        Kernel Mailing List <linux-kernel@vger.kernel.org>,
        Bill O'Donnell <billodo@redhat.com>,
        Miklos Szeredi <miklos@szeredi.hu>,
        David Howells <dhowells@redhat.com>
Date:   Thu, 21 Sep 2023 15:03:33 +0800
Message-ID: <169527981274.27328.17552761781465494402.stgit@donald.themaw.net>
In-Reply-To: <169527971702.27328.16272807830250040704.stgit@donald.themaw.net>
References: <169527971702.27328.16272807830250040704.stgit@donald.themaw.net>
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Refactor autofs_prepare_pipe() by seperating out a check function
to be used later.

Signed-off-by: Ian Kent <raven@themaw.net>
---
 fs/autofs/autofs_i.h |   10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/fs/autofs/autofs_i.h b/fs/autofs/autofs_i.h
index d5a44fa88acf..c24d32be7937 100644
--- a/fs/autofs/autofs_i.h
+++ b/fs/autofs/autofs_i.h
@@ -209,12 +209,20 @@ int autofs_fill_super(struct super_block *, void *, int);
 struct autofs_info *autofs_new_ino(struct autofs_sb_info *);
 void autofs_clean_ino(struct autofs_info *);
 
-static inline int autofs_prepare_pipe(struct file *pipe)
+static inline int autofs_check_pipe(struct file *pipe)
 {
 	if (!(pipe->f_mode & FMODE_CAN_WRITE))
 		return -EINVAL;
 	if (!S_ISFIFO(file_inode(pipe)->i_mode))
 		return -EINVAL;
+	return 0;
+}
+
+static inline int autofs_prepare_pipe(struct file *pipe)
+{
+	int ret = autofs_check_pipe(pipe);
+	if (ret < 0)
+		return ret;
 	/* We want a packet pipe */
 	pipe->f_flags |= O_DIRECT;
 	/* We don't expect -EAGAIN */