62 lines
1.8 KiB
Go
62 lines
1.8 KiB
Go
// Copyright 2019 The gVisor Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// Package ext4 implements the ext4 filesystem.
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package ext4
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import (
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"gvisor.dev/gvisor/pkg/sentry/context"
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"gvisor.dev/gvisor/pkg/sentry/fs"
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)
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// filesystem implements fs.Filesystem for ext4.
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//
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// +stateify savable
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type filesystem struct{}
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func init() {
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fs.RegisterFilesystem(&filesystem{})
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}
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// FilesystemName is the name under which the filesystem is registered.
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// Name matches fs/ext4/super.c:ext4_fs_type.name.
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const FilesystemName = "ext4"
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// Name is the name of the file system.
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func (*filesystem) Name() string {
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return FilesystemName
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}
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// AllowUserMount prohibits users from using mount(2) with this file system.
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func (*filesystem) AllowUserMount() bool {
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return false
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}
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// AllowUserList prohibits this filesystem to be listed in /proc/filesystems.
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func (*filesystem) AllowUserList() bool {
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return false
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}
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// Flags returns properties of the filesystem.
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//
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// In Linux, ext4 returns FS_REQUIRES_DEV. See fs/ext4/super.c
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func (*filesystem) Flags() fs.FilesystemFlags {
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return fs.FilesystemRequiresDev
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}
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// Mount returns the root inode of the ext4 fs.
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func (f *filesystem) Mount(ctx context.Context, device string, flags fs.MountSourceFlags, data string, cgroupsInt interface{}) (*fs.Inode, error) {
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panic("unimplemented")
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}
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