vfs: Convert nsfs to use the new mount API (059b20d9) · Commits · 戴 / test

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>

fs/nsfs.c

+11 −5

Original line number	Diff line number	Diff line
		// 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,
		};

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