113 lines
3.2 KiB
Go
113 lines
3.2 KiB
Go
// Copyright 2018 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 host
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import (
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"io/ioutil"
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"os"
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"path"
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"syscall"
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"testing"
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"gvisor.dev/gvisor/pkg/sentry/context/contexttest"
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"gvisor.dev/gvisor/pkg/sentry/fs"
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)
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// TestMultipleReaddir verifies that multiple Readdir calls return the same
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// thing if they use different dir contexts.
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func TestMultipleReaddir(t *testing.T) {
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p, err := ioutil.TempDir("", "readdir")
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if err != nil {
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t.Fatalf("Failed to create test dir: %v", err)
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}
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defer os.RemoveAll(p)
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f, err := os.Create(path.Join(p, "a.txt"))
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if err != nil {
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t.Fatalf("Failed to create a.txt: %v", err)
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}
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f.Close()
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f, err = os.Create(path.Join(p, "b.txt"))
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if err != nil {
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t.Fatalf("Failed to create b.txt: %v", err)
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}
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f.Close()
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fd, err := open(nil, p)
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if err != nil {
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t.Fatalf("Failed to open %q: %v", p, err)
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}
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ctx := contexttest.Context(t)
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n, err := newInode(ctx, newMountSource(ctx, p, fs.RootOwner, &Filesystem{}, fs.MountSourceFlags{}, false), fd, false, false)
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if err != nil {
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t.Fatalf("Failed to create inode: %v", err)
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}
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dirent := fs.NewDirent(ctx, n, "readdir")
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openFile, err := n.GetFile(ctx, dirent, fs.FileFlags{Read: true})
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if err != nil {
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t.Fatalf("Failed to get file: %v", err)
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}
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defer openFile.DecRef()
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c1 := &fs.DirCtx{DirCursor: new(string)}
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if _, err := openFile.FileOperations.(*fileOperations).IterateDir(ctx, dirent, c1, 0); err != nil {
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t.Fatalf("First Readdir failed: %v", err)
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}
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c2 := &fs.DirCtx{DirCursor: new(string)}
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if _, err := openFile.FileOperations.(*fileOperations).IterateDir(ctx, dirent, c2, 0); err != nil {
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t.Errorf("Second Readdir failed: %v", err)
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}
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if _, ok := c1.DentAttrs()["a.txt"]; !ok {
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t.Errorf("want a.txt in first Readdir, got %v", c1.DentAttrs())
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}
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if _, ok := c1.DentAttrs()["b.txt"]; !ok {
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t.Errorf("want b.txt in first Readdir, got %v", c1.DentAttrs())
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}
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if _, ok := c2.DentAttrs()["a.txt"]; !ok {
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t.Errorf("want a.txt in second Readdir, got %v", c2.DentAttrs())
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}
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if _, ok := c2.DentAttrs()["b.txt"]; !ok {
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t.Errorf("want b.txt in second Readdir, got %v", c2.DentAttrs())
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}
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}
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// TestCloseFD verifies fds will be closed.
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func TestCloseFD(t *testing.T) {
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var p [2]int
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if err := syscall.Pipe(p[0:]); err != nil {
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t.Fatalf("Failed to create pipe %v", err)
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}
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defer syscall.Close(p[0])
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defer syscall.Close(p[1])
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// Use the write-end because we will detect if it's closed on the read end.
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ctx := contexttest.Context(t)
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file, err := NewFile(ctx, p[1], fs.RootOwner)
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if err != nil {
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t.Fatalf("Failed to create File: %v", err)
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}
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file.DecRef()
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s := make([]byte, 10)
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if c, err := syscall.Read(p[0], s); c != 0 || err != nil {
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t.Errorf("want 0, nil (EOF) from read end, got %v, %v", c, err)
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}
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}
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