[PATCH 01/52] fuse: add skeleton virtio_fs.ko module

Vivek Goyal
2018-12-10T17:12:27Z

From: Stefan Hajnoczi <stefanha@redhat.com>

Add a basic file system module for virtio-fs.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
---
fs/fuse/Kconfig | 10 ++++++++++
fs/fuse/Makefile | 1 +
fs/fuse/virtio_fs.c | 33 +++++++++++++++++++++++++++++++++
3 files changed, 44 insertions(+)
create mode 100644 fs/fuse/virtio_fs.c

diff --git a/fs/fuse/Kconfig b/fs/fuse/Kconfig
index 76f09ce7e5b2..0b1375126420 100644
--- a/fs/fuse/Kconfig
+++ b/fs/fuse/Kconfig
@@ -26,3 +26,13 @@ config CUSE

If you want to develop or use a userspace character device
based on CUSE, answer Y or M.
+
+config VIRTIO_FS
+ tristate "Virtio Filesystem"
+ depends on FUSE_FS
+ help
+ The Virtio Filesystem allows guests to mount file systems from the
+ host.
+
+ If you want to share files between guests or with the host, answer Y
+ or M.
diff --git a/fs/fuse/Makefile b/fs/fuse/Makefile
index f7b807bc1027..47b78fac5809 100644
--- a/fs/fuse/Makefile
+++ b/fs/fuse/Makefile
@@ -4,5 +4,6 @@

obj-$(CONFIG_FUSE_FS) += fuse.o
obj-$(CONFIG_CUSE) += cuse.o
+obj-$(CONFIG_VIRTIO_FS) += virtio_fs.o

fuse-objs := dev.o dir.o file.o inode.o control.o xattr.o acl.o readdir.o
diff --git a/fs/fuse/virtio_fs.c b/fs/fuse/virtio_fs.c
new file mode 100644
index 000000000000..6b7d3973bd85
--- /dev/null
+++ b/fs/fuse/virtio_fs.c
@@ -0,0 +1,33 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * virtio-fs: Virtio Filesystem
+ * Copyright (C) 2018 Red Hat, Inc.
+ */
+
+#include <linux/module.h>
+#include <linux/fs.h>
+
+MODULE_AUTHOR("Stefan Hajnoczi <stefanha@redhat.com>");
+MODULE_DESCRIPTION("Virtio Filesystem");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS_FS(KBUILD_MODNAME);
+
+static struct file_system_type virtio_fs_type = {
+ .owner = THIS_MODULE,
+ .name = KBUILD_MODNAME,
+ .mount = NULL,
+ .kill_sb = NULL,
+};
+
+static int __init virtio_fs_init(void)
+{
+ return register_filesystem(&virtio_fs_type);
+}
+
+static void __exit virtio_fs_exit(void)
+{
+ unregister_filesystem(&virtio_fs_type);
+}
+
+module_init(virtio_fs_init);
+module_exit(virtio_fs_exit);
--
2.13.6