140 lines
3.8 KiB
Go
140 lines
3.8 KiB
Go
package allocdir
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import (
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"io/ioutil"
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"os"
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"path/filepath"
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"testing"
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cstructs "github.com/hashicorp/nomad/client/structs"
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"github.com/hashicorp/nomad/helper/testlog"
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)
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// Test that building a chroot will skip nonexistent directories.
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func TestTaskDir_EmbedNonexistent(t *testing.T) {
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tmp, err := ioutil.TempDir("", "AllocDir")
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if err != nil {
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t.Fatalf("Couldn't create temp dir: %v", err)
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}
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defer os.RemoveAll(tmp)
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d := NewAllocDir(testlog.HCLogger(t), tmp)
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defer d.Destroy()
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td := d.NewTaskDir(t1.Name)
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if err := d.Build(); err != nil {
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t.Fatalf("Build() failed: %v", err)
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}
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fakeDir := "/foobarbaz"
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mapping := map[string]string{fakeDir: fakeDir}
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if err := td.embedDirs(mapping); err != nil {
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t.Fatalf("embedDirs(%v) should should skip %v since it does not exist", mapping, fakeDir)
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}
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}
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// Test that building a chroot copies files from the host into the task dir.
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func TestTaskDir_EmbedDirs(t *testing.T) {
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tmp, err := ioutil.TempDir("", "AllocDir")
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if err != nil {
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t.Fatalf("Couldn't create temp dir: %v", err)
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}
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defer os.RemoveAll(tmp)
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d := NewAllocDir(testlog.HCLogger(t), tmp)
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defer d.Destroy()
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td := d.NewTaskDir(t1.Name)
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if err := d.Build(); err != nil {
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t.Fatalf("Build() failed: %v", err)
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}
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// Create a fake host directory, with a file, and a subfolder that contains
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// a file.
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host, err := ioutil.TempDir("", "AllocDirHost")
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if err != nil {
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t.Fatalf("Couldn't create temp dir: %v", err)
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}
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defer os.RemoveAll(host)
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subDirName := "subdir"
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subDir := filepath.Join(host, subDirName)
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if err := os.MkdirAll(subDir, 0777); err != nil {
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t.Fatalf("Failed to make subdir %v: %v", subDir, err)
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}
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file := "foo"
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subFile := "bar"
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if err := ioutil.WriteFile(filepath.Join(host, file), []byte{'a'}, 0777); err != nil {
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t.Fatalf("Couldn't create file in host dir %v: %v", host, err)
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}
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if err := ioutil.WriteFile(filepath.Join(subDir, subFile), []byte{'a'}, 0777); err != nil {
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t.Fatalf("Couldn't create file in host subdir %v: %v", subDir, err)
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}
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// Create mapping from host dir to task dir.
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taskDest := "bin/test/"
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mapping := map[string]string{host: taskDest}
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if err := td.embedDirs(mapping); err != nil {
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t.Fatalf("embedDirs(%v) failed: %v", mapping, err)
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}
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exp := []string{filepath.Join(td.Dir, taskDest, file), filepath.Join(td.Dir, taskDest, subDirName, subFile)}
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for _, f := range exp {
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if _, err := os.Stat(f); os.IsNotExist(err) {
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t.Fatalf("File %v not embedded: %v", f, err)
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}
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}
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}
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// Test that task dirs for image based isolation don't require root.
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func TestTaskDir_NonRoot_Image(t *testing.T) {
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if os.Geteuid() == 0 {
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t.Skip("test should be run as non-root user")
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}
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tmp, err := ioutil.TempDir("", "AllocDir")
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if err != nil {
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t.Fatalf("Couldn't create temp dir: %v", err)
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}
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defer os.RemoveAll(tmp)
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d := NewAllocDir(testlog.HCLogger(t), tmp)
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defer d.Destroy()
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td := d.NewTaskDir(t1.Name)
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if err := d.Build(); err != nil {
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t.Fatalf("Build() failed: %v", err)
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}
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if err := td.Build(false, nil, cstructs.FSIsolationImage); err != nil {
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t.Fatalf("TaskDir.Build failed: %v", err)
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}
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}
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// Test that task dirs with no isolation don't require root.
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func TestTaskDir_NonRoot(t *testing.T) {
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if os.Geteuid() == 0 {
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t.Skip("test should be run as non-root user")
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}
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tmp, err := ioutil.TempDir("", "AllocDir")
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if err != nil {
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t.Fatalf("Couldn't create temp dir: %v", err)
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}
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defer os.RemoveAll(tmp)
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d := NewAllocDir(testlog.HCLogger(t), tmp)
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defer d.Destroy()
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td := d.NewTaskDir(t1.Name)
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if err := d.Build(); err != nil {
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t.Fatalf("Build() failed: %v", err)
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}
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if err := td.Build(false, nil, cstructs.FSIsolationNone); err != nil {
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t.Fatalf("TaskDir.Build failed: %v", err)
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}
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// ${TASK_DIR}/alloc should not exist!
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if _, err = os.Stat(td.SharedTaskDir); !os.IsNotExist(err) {
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t.Fatalf("Expected a NotExist error for shared alloc dir in task dir: %q", td.SharedTaskDir)
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}
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}
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