From: David Howells <dhowells@redhat.com>
To: viro@zeniv.linux.org.uk
Cc: "J. Bruce Fields" <bfields@fieldses.org>,
Jeff Layton <jlayton@kernel.org>,
linux-nfs@vger.kernel.org, dhowells@redhat.com,
linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH 20/38] vfs: Convert nfsctl to fs_context
Date: Thu, 14 Mar 2019 16:11:34 +0000 [thread overview]
Message-ID: <155257989442.13720.9404403342947215402.stgit@warthog.procyon.org.uk> (raw)
In-Reply-To: <155257972443.13720.11743171471060355965.stgit@warthog.procyon.org.uk>
Signed-off-by: David Howells <dhowells@redhat.com>
cc: "J. Bruce Fields" <bfields@fieldses.org>
cc: Jeff Layton <jlayton@kernel.org>
cc: linux-nfs@vger.kernel.org
---
fs/nfsd/nfsctl.c | 33 ++++++++++++++++++++++++++-------
1 file changed, 26 insertions(+), 7 deletions(-)
diff --git a/fs/nfsd/nfsctl.c b/fs/nfsd/nfsctl.c
index f2feb2d11bae..d4eb4f34a94c 100644
--- a/fs/nfsd/nfsctl.c
+++ b/fs/nfsd/nfsctl.c
@@ -7,6 +7,7 @@
#include <linux/slab.h>
#include <linux/namei.h>
#include <linux/ctype.h>
+#include <linux/fs_context.h>
#include <linux/sunrpc/svcsock.h>
#include <linux/lockd/lockd.h>
@@ -1146,7 +1147,7 @@ static ssize_t write_v4_end_grace(struct file *file, char *buf, size_t size)
* populating the filesystem.
*/
-static int nfsd_fill_super(struct super_block * sb, void * data, int silent)
+static int nfsd_fill_super(struct super_block *sb, struct fs_context *fc)
{
static const struct tree_descr nfsd_files[] = {
[NFSD_List] = {"exports", &exports_nfsd_operations, S_IRUGO},
@@ -1176,15 +1177,33 @@ static int nfsd_fill_super(struct super_block * sb, void * data, int silent)
#endif
/* last one */ {""}
};
- get_net(sb->s_fs_info);
+
return simple_fill_super(sb, 0x6e667364, nfsd_files);
}
-static struct dentry *nfsd_mount(struct file_system_type *fs_type,
- int flags, const char *dev_name, void *data)
+static int nfsd_fs_get_tree(struct fs_context *fc)
+{
+ fc->s_fs_info = get_net(fc->net_ns);
+ return vfs_get_super(fc, vfs_get_keyed_super, nfsd_fill_super);
+}
+
+static void nfsd_fs_free_fc(struct fs_context *fc)
+{
+ if (fc->s_fs_info)
+ put_net(fc->s_fs_info);
+}
+
+static const struct fs_context_operations nfsd_fs_context_ops = {
+ .free = nfsd_fs_free_fc,
+ .get_tree = nfsd_fs_get_tree,
+};
+
+static int nfsd_init_fs_context(struct fs_context *fc)
{
- struct net *net = current->nsproxy->net_ns;
- return mount_ns(fs_type, flags, data, net, net->user_ns, nfsd_fill_super);
+ put_user_ns(fc->user_ns);
+ fc->user_ns = get_user_ns(fc->net_ns->user_ns);
+ fc->ops = &nfsd_fs_context_ops;
+ return 0;
}
static void nfsd_umount(struct super_block *sb)
@@ -1198,7 +1217,7 @@ static void nfsd_umount(struct super_block *sb)
static struct file_system_type nfsd_fs_type = {
.owner = THIS_MODULE,
.name = "nfsd",
- .mount = nfsd_mount,
+ .init_fs_context = nfsd_init_fs_context,
.kill_sb = nfsd_umount,
};
MODULE_ALIAS_FS("nfsd");
next prev parent reply other threads:[~2019-03-14 16:11 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <155257972443.13720.11743171471060355965.stgit@warthog.procyon.org.uk>
2019-03-14 16:09 ` [PATCH 01/38] vfs: Provide sb->s_iflags settings in fs_context struct David Howells
2019-03-14 16:09 ` [PATCH 02/38] vfs: Provide a mount_pseudo-replacement for fs_context David Howells
2019-03-14 16:09 ` [PATCH 03/38] vfs: Convert aio to fs_context David Howells
2019-03-14 16:09 ` [PATCH 04/38] vfs: Convert anon_inodes " David Howells
2019-03-14 16:09 ` [PATCH 05/38] vfs: Convert bdev " David Howells
2019-03-14 16:09 ` [PATCH 06/38] vfs: Convert nsfs " David Howells
2019-03-14 16:09 ` [PATCH 07/38] vfs: Convert pipe " David Howells
2019-03-14 16:09 ` [PATCH 08/38] vfs: Convert zsmalloc " David Howells
2019-03-14 16:10 ` [PATCH 09/38] vfs: Convert sockfs " David Howells
2019-03-14 16:10 ` [PATCH 10/38] vfs: Convert dax " David Howells
2019-03-14 16:10 ` [PATCH 11/38] vfs: Convert drm " David Howells
2019-03-14 16:10 ` [PATCH 12/38] vfs: Convert ia64 perfmon " David Howells
2019-03-14 16:10 ` [PATCH 13/38] vfs: Convert cxl " David Howells
2019-03-15 0:22 ` Andrew Donnellan
2019-03-22 7:42 ` Frederic Barrat
2019-03-14 16:10 ` [PATCH 14/38] vfs: Convert ocxlflash " David Howells
2019-03-19 14:53 ` Matthew R. Ochs
2019-03-14 16:10 ` [PATCH 15/38] vfs: Convert virtio_balloon " David Howells
2019-03-14 16:11 ` [PATCH 16/38] vfs: Convert btrfs_test " David Howells
2019-03-14 18:24 ` David Sterba
2019-03-14 16:11 ` [PATCH 17/38] vfs: Kill off mount_pseudo() and mount_pseudo_xattr() David Howells
2019-03-14 16:11 ` [PATCH 18/38] vfs: Use sget_fc() for pseudo-filesystems David Howells
2019-03-14 16:11 ` [PATCH 19/38] vfs: Convert binderfs to fs_context David Howells
2019-03-14 16:11 ` David Howells [this message]
2019-03-14 17:29 ` [PATCH 20/38] vfs: Convert nfsctl " J. Bruce Fields
2019-03-14 16:11 ` [PATCH 21/38] vfs: Convert rpc_pipefs " David Howells
2019-03-14 16:11 ` [PATCH 22/38] vfs: Kill off mount_ns() David Howells
2019-03-14 16:11 ` [PATCH 23/38] vfs: Kill sget_userns() David Howells
2019-03-14 16:12 ` [PATCH 24/38] vfs: Convert binfmt_misc to fs_context David Howells
2019-03-14 16:12 ` [PATCH 25/38] vfs: Convert configfs " David Howells
2019-03-14 16:12 ` [PATCH 26/38] vfs: Convert efivarfs " David Howells
2019-03-14 16:12 ` [PATCH 27/38] vfs: Convert fusectl " David Howells
2019-03-14 16:12 ` [PATCH 28/38] vfs: Convert qib_fs/ipathfs " David Howells
2019-03-14 16:12 ` [PATCH 29/38] vfs: Convert ibmasmfs " David Howells
2019-03-14 16:12 ` [PATCH 30/38] vfs: Convert oprofilefs " David Howells
2019-03-14 16:13 ` [PATCH 31/38] vfs: Convert gadgetfs " David Howells
2019-03-20 6:57 ` Felipe Balbi
2019-03-20 7:42 ` David Howells
2019-03-20 8:34 ` Felipe Balbi
2019-03-14 16:13 ` [PATCH 32/38] vfs: Convert xenfs " David Howells
2019-03-14 16:13 ` [PATCH 33/38] vfs: Convert openpromfs " David Howells
2019-03-14 16:13 ` [PATCH 34/38] vfs: Convert apparmorfs " David Howells
2019-03-14 16:13 ` [PATCH 35/38] vfs: Convert securityfs " David Howells
2019-03-14 16:13 ` [PATCH 36/38] vfs: Convert selinuxfs " David Howells
2019-03-14 16:13 ` [PATCH 37/38] vfs: Convert smackfs " David Howells
2019-03-14 16:13 ` [PATCH 38/38] tmpfs, devtmpfs, ramfs, rootfs: Convert " David Howells
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