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From: Ian Kent <raven@themaw.net>
To: linux-xfs <linux-xfs@vger.kernel.org>
Cc: Brian Foster <bfoster@redhat.com>,
	Eric Sandeen <sandeen@sandeen.net>,
	David Howells <dhowells@redhat.com>,
	Dave Chinner <dchinner@redhat.com>,
	Al Viro <viro@ZenIV.linux.org.uk>
Subject: [PATCH v5 10/17] xfs: mount-api - add xfs_get_tree()
Date: Wed, 09 Oct 2019 19:31:03 +0800
Message-ID: <157062066316.32346.11258138585168789863.stgit@fedora-28> (raw)
In-Reply-To: <157062043952.32346.977737248061083292.stgit@fedora-28>

Add the fs_context_operations method .get_tree that validates
mount options and fills the super block as previously done
by the file_system_type .mount method.

Signed-off-by: Ian Kent <raven@themaw.net>
Reviewed-by: Brian Foster <bfoster@redhat.com>
---
 fs/xfs/xfs_super.c |   50 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 50 insertions(+)

diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c
index cc2da9093e34..314acafffd0b 100644
--- a/fs/xfs/xfs_super.c
+++ b/fs/xfs/xfs_super.c
@@ -1925,6 +1925,51 @@ xfs_fs_fill_super(
 	return error;
 }
 
+STATIC int
+xfs_fill_super(
+	struct super_block	*sb,
+	struct fs_context	*fc)
+{
+	struct xfs_fs_context	*ctx = fc->fs_private;
+	struct xfs_mount	*mp = sb->s_fs_info;
+	int			silent = fc->sb_flags & SB_SILENT;
+	int			error = -ENOMEM;
+
+	mp->m_super = sb;
+
+	/*
+	 * set up the mount name first so all the errors will refer to the
+	 * correct device.
+	 */
+	mp->m_fsname = kstrndup(sb->s_id, MAXNAMELEN, GFP_KERNEL);
+	if (!mp->m_fsname)
+		goto out_error;
+	mp->m_fsname_len = strlen(mp->m_fsname) + 1;
+
+	error = xfs_validate_params(mp, ctx, false);
+	if (error)
+		goto out_error;
+
+	error = __xfs_fs_fill_super(mp, silent);
+	if (error)
+		goto out_error;
+
+	return 0;
+
+ out_error:
+	sb->s_fs_info = NULL;
+	xfs_free_fsname(mp);
+	kfree(mp);
+	return error;
+}
+
+STATIC int
+xfs_get_tree(
+	struct fs_context	*fc)
+{
+	return get_tree_bdev(fc, xfs_fill_super);
+}
+
 STATIC void
 xfs_fs_put_super(
 	struct super_block	*sb)
@@ -1995,6 +2040,11 @@ static const struct super_operations xfs_super_operations = {
 	.free_cached_objects	= xfs_fs_free_cached_objects,
 };
 
+static const struct fs_context_operations xfs_context_ops = {
+	.parse_param = xfs_parse_param,
+	.get_tree    = xfs_get_tree,
+};
+
 static struct file_system_type xfs_fs_type = {
 	.owner			= THIS_MODULE,
 	.name			= "xfs",


  parent reply index

Thread overview: 51+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-10-09 11:30 [PATCH v5 00/17] xfs: mount API patch series Ian Kent
2019-10-09 11:30 ` [PATCH v5 01/17] vfs: Create fs_context-aware mount_bdev() replacement Ian Kent
2019-10-09 11:30 ` [PATCH v5 02/17] vfs: add missing blkdev_put() in get_tree_bdev() Ian Kent
2019-10-09 11:30 ` [PATCH v5 03/17] xfs: remove very old mount option Ian Kent
2019-10-09 11:30 ` [PATCH v5 04/17] xfs: mount-api - add fs parameter description Ian Kent
2019-10-09 14:48   ` Christoph Hellwig
2019-10-10  0:56     ` Ian Kent
2019-10-10  6:39       ` Christoph Hellwig
2019-10-10  8:31         ` Ian Kent
2019-10-09 14:53   ` Christoph Hellwig
2019-10-09 11:30 ` [PATCH v5 05/17] xfs: mount-api - refactor suffix_kstrtoint() Ian Kent
2019-10-09 14:48   ` Christoph Hellwig
2019-10-09 15:21     ` Al Viro
2019-10-09 15:29       ` Christoph Hellwig
2019-10-09 16:03         ` Al Viro
2019-10-09 18:01           ` Christoph Hellwig
2019-10-09 18:22             ` Al Viro
2019-12-06  8:27               ` Christoph Hellwig
2019-10-10  0:59     ` Ian Kent
2019-10-09 11:30 ` [PATCH v5 06/17] xfs: mount-api - refactor xfs_parseags() Ian Kent
2019-10-09 14:56   ` Christoph Hellwig
2019-10-10  1:08     ` Ian Kent
2019-10-09 11:30 ` [PATCH v5 07/17] xfs: mount-api - make xfs_parse_param() take context .parse_param() args Ian Kent
2019-10-09 11:30 ` [PATCH v5 08/17] xfs: mount-api - move xfs_parseargs() validation to a helper Ian Kent
2019-10-09 15:02   ` Christoph Hellwig
2019-10-09 19:47     ` Darrick J. Wong
2019-10-10  6:38       ` Christoph Hellwig
2019-10-10  7:57         ` Christoph Hellwig
2019-10-09 11:30 ` [PATCH v5 09/17] xfs: mount-api - refactor xfs_fs_fill_super() Ian Kent
2019-10-09 15:03   ` Christoph Hellwig
2019-10-10  1:10     ` Ian Kent
2019-10-09 11:31 ` Ian Kent [this message]
2019-10-09 15:04   ` [PATCH v5 10/17] xfs: mount-api - add xfs_get_tree() Christoph Hellwig
2019-10-10  1:11     ` Ian Kent
2019-10-09 11:31 ` [PATCH v5 11/17] xfs: mount-api - add xfs_remount_rw() helper Ian Kent
2019-10-09 11:31 ` [PATCH v5 12/17] xfs: mount-api - add xfs_remount_ro() helper Ian Kent
2019-10-09 11:31 ` [PATCH v5 13/17] xfs: mount api - add xfs_reconfigure() Ian Kent
2019-10-09 12:51   ` Brian Foster
2019-10-09 15:05   ` Christoph Hellwig
2019-10-10  1:12     ` Ian Kent
2019-10-09 11:31 ` [PATCH v5 14/17] xfs: mount-api - add xfs_fc_free() Ian Kent
2019-10-09 12:51   ` Brian Foster
2019-10-09 11:31 ` [PATCH v5 15/17] xfs: mount-api - dont set sb in xfs_mount_alloc() Ian Kent
2019-10-09 11:31 ` [PATCH v5 16/17] xfs: mount-api - switch to new mount-api Ian Kent
2019-10-09 15:10   ` Christoph Hellwig
2019-10-10  1:15     ` Ian Kent
2019-10-09 11:31 ` [PATCH v5 17/17] xfs: mount-api - remove remaining legacy mount code Ian Kent
2019-10-09 15:10   ` Christoph Hellwig
2019-10-10  1:17     ` Ian Kent
2019-10-09 14:52 ` [PATCH v5 00/17] xfs: mount API patch series Christoph Hellwig
2019-10-14  1:28   ` Ian Kent

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