linux-kernel - [PATCH 07/13] devpts: Move parse_mount_options into fill

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Date:	Mon,  4 Apr 2016 20:29:23 -0500
From:	"Eric W. Biederman" <ebiederm@...ssion.com>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	"H. Peter Anvin" <hpa@...or.com>,
	Peter Hurley <peter@...leysoftware.com>,
	Greg KH <greg@...ah.com>, Jiri Slaby <jslaby@...e.com>,
	Aurelien Jarno <aurelien@...el32.net>,
	Andy Lutomirski <luto@...capital.net>,
	Florian Weimer <fw@...eb.enyo.de>,
	Al Viro <viro@...iv.linux.org.uk>,
	Serge Hallyn <serge.hallyn@...ntu.com>,
	Jann Horn <jann@...jh.net>,
	"security@...nel.org" <security@...nel.org>, security@...ntu.com,
	security@...ian.org, Willy Tarreau <w@....eu>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	"Eric W. Biederman" <ebiederm@...ssion.com>
Subject: [PATCH 07/13] devpts: Move parse_mount_options into fill_super

Signed-off-by: "Eric W. Biederman" <ebiederm@...ssion.com>
---
 fs/devpts/inode.c | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

diff --git a/fs/devpts/inode.c b/fs/devpts/inode.c
index 80c78bb472a9..46d633ab16c7 100644
--- a/fs/devpts/inode.c
+++ b/fs/devpts/inode.c
@@ -462,6 +462,7 @@ static int
 devpts_fill_super(struct super_block *s, void *data, int silent)
 {
 	struct inode *inode;
+	int error;
 
 	s->s_blocksize = 1024;
 	s->s_blocksize_bits = 10;
@@ -469,10 +470,16 @@ devpts_fill_super(struct super_block *s, void *data, int silent)
 	s->s_op = &devpts_sops;
 	s->s_time_gran = 1;
 
+	error = -ENOMEM;
 	s->s_fs_info = new_pts_fs_info();
 	if (!s->s_fs_info)
 		goto fail;
 
+	error = parse_mount_options(data, &DEVPTS_SB(s)->mount_opts);
+	if (error)
+		goto fail;
+
+	error = -ENOMEM;
 	inode = new_inode(s);
 	if (!inode)
 		goto fail;
@@ -490,7 +497,7 @@ devpts_fill_super(struct super_block *s, void *data, int silent)
 	pr_err("get root dentry failed\n");
 
 fail:
-	return -ENOMEM;
+	return error;
 }
 
 #ifdef CONFIG_DEVPTS_MULTIPLE_INSTANCES
@@ -557,10 +564,6 @@ static struct dentry *devpts_mount(struct file_system_type *fs_type,
 		if (error)
 			goto out_undo_sget;
 
-		error = parse_mount_options(data, &DEVPTS_SB(s)->mount_opts);
-		if (error)
-			goto out_undo_sget;
-
 		error = mknod_ptmx(s);
 		if (error)
 			goto out_undo_sget;
-- 
2.6.3