p71924506
/
linux_old1
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

vfs: Convert nsfs to use the new mount API 

Convert the nsfs filesystem to the new internal mount API as the old
one will be obsoleted and removed.  This allows greater flexibility in
communication of mount parameters between userspace, the VFS and the
filesystem.

See Documentation/filesystems/mount_api.txt for more information.

Signed-off-by: David Howells <dhowells@redhat.com>
cc: Eric W. Biederman <ebiederm@xmission.com>
cc: linux-fsdevel@vger.kernel.org
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
David Howells 2019-03-25 16:38:23 +00:00 committed by Al Viro
parent 9030d16eb8
commit 059b20d9da
1 changed files with 11 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
fs/nsfs.c
View File

@ -1,5 +1,6 @@
// SPDX-License-Identifier: GPL-2.0
#include <linux/mount.h>
#include <linux/pseudo_fs.h>
#include <linux/file.h>
#include <linux/fs.h>
#include <linux/proc_ns.h>
@ -258,15 +259,20 @@ static const struct super_operations nsfs_ops = {
.evict_inode = nsfs_evict,
.show_path = nsfs_show_path,
};
static struct dentry *nsfs_mount(struct file_system_type *fs_type,
int flags, const char *dev_name, void *data)
static int nsfs_init_fs_context(struct fs_context *fc)
{
return mount_pseudo(fs_type, &nsfs_ops,
&ns_dentry_operations, NSFS_MAGIC);
struct pseudo_fs_context *ctx = init_pseudo(fc, NSFS_MAGIC);
if (!ctx)
return -ENOMEM;
ctx->ops = &nsfs_ops;
ctx->dops = &ns_dentry_operations;
return 0;
}
static struct file_system_type nsfs = {
.name = "nsfs",
.mount = nsfs_mount,
.init_fs_context = nsfs_init_fs_context,
.kill_sb = kill_anon_super,
};