57 lines
1.7 KiB
Go
57 lines
1.7 KiB
Go
// Copyright 2018 Google Inc.
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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 proc
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import (
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"gvisor.googlesource.com/gvisor/pkg/sentry/context"
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"gvisor.googlesource.com/gvisor/pkg/sentry/fs"
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"gvisor.googlesource.com/gvisor/pkg/sentry/fs/proc/device"
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"gvisor.googlesource.com/gvisor/pkg/sentry/kernel"
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"gvisor.googlesource.com/gvisor/pkg/sentry/usermem"
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)
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type file struct {
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fs.InodeOperations
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// nodeType is the file type of this file.
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nodeType fs.InodeType
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// t is the associated kernel task that owns this file.
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t *kernel.Task
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}
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func newFile(node fs.InodeOperations, msrc *fs.MountSource, nodeType fs.InodeType, t *kernel.Task) *fs.Inode {
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iops := &file{node, nodeType, t}
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sattr := fs.StableAttr{
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DeviceID: device.ProcDevice.DeviceID(),
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InodeID: device.ProcDevice.NextIno(),
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BlockSize: usermem.PageSize,
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Type: nodeType,
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}
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return fs.NewInode(iops, msrc, sattr)
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}
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// UnstableAttr returns all attributes of this file.
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func (f *file) UnstableAttr(ctx context.Context, inode *fs.Inode) (fs.UnstableAttr, error) {
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uattr, err := f.InodeOperations.UnstableAttr(ctx, inode)
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if err != nil {
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return fs.UnstableAttr{}, err
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}
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if f.t != nil {
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uattr.Owner = fs.FileOwnerFromContext(f.t)
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}
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return uattr, nil
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}
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