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reuse same code for setting pipes in run/exec

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This also moves `exec -i` test to _unix_test.go because it seems to need a
pty to reliably reproduce the behavior.

Signed-off-by: Daniel, Dao Quang Minh <dqminh89@gmail.com>
This commit is contained in:
Daniel, Dao Quang Minh 2015-04-22 23:37:15 +00:00
parent 3c9ae03a86
commit ade8146aa8
4 changed files with 87 additions and 91 deletions
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68
daemon/execdriver/native/driver.go
View file

@ -87,8 +87,6 @@ func (d *driver) Run(c *execdriver.Command, pipes *execdriver.Pipes, startCallba
return execdriver.ExitStatus{ExitCode: -1}, err
}
var term execdriver.Terminal
p := &libcontainer.Process{
Args: append([]string{c.ProcessConfig.Entrypoint}, c.ProcessConfig.Arguments...),
Env: c.ProcessConfig.Env,
@ -96,36 +94,9 @@ func (d *driver) Run(c *execdriver.Command, pipes *execdriver.Pipes, startCallba
User: c.ProcessConfig.User,
}
if c.ProcessConfig.Tty {
rootuid, err := container.HostUID()
if err != nil {
return execdriver.ExitStatus{ExitCode: -1}, err
}
cons, err := p.NewConsole(rootuid)
if err != nil {
return execdriver.ExitStatus{ExitCode: -1}, err
}
term, err = NewTtyConsole(cons, pipes, rootuid)
} else {
p.Stdout = pipes.Stdout
p.Stderr = pipes.Stderr
r, w, err := os.Pipe()
if err != nil {
return execdriver.ExitStatus{ExitCode: -1}, err
}
if pipes.Stdin != nil {
go func() {
io.Copy(w, pipes.Stdin)
w.Close()
}()
p.Stdin = r
}
term = &execdriver.StdConsole{}
}
if err != nil {
if err := setupPipes(container, &c.ProcessConfig, p, pipes); err != nil {
return execdriver.ExitStatus{ExitCode: -1}, err
}
c.ProcessConfig.Terminal = term
cont, err := d.factory.Create(c.ID, container)
if err != nil {
@ -398,3 +369,40 @@ func (t *TtyConsole) AttachPipes(pipes *execdriver.Pipes) error {
func (t *TtyConsole) Close() error {
return t.console.Close()
}
func setupPipes(container *configs.Config, processConfig *execdriver.ProcessConfig, p *libcontainer.Process, pipes *execdriver.Pipes) error {
var term execdriver.Terminal
var err error
if processConfig.Tty {
rootuid, err := container.HostUID()
if err != nil {
return err
}
cons, err := p.NewConsole(rootuid)
if err != nil {
return err
}
term, err = NewTtyConsole(cons, pipes, rootuid)
} else {
p.Stdout = pipes.Stdout
p.Stderr = pipes.Stderr
r, w, err := os.Pipe()
if err != nil {
return err
}
if pipes.Stdin != nil {
go func() {
io.Copy(w, pipes.Stdin)
w.Close()
}()
p.Stdin = r
}
term = &execdriver.StdConsole{}
}
if err != nil {
return err
}
processConfig.Terminal = term
return nil
}

25
daemon/execdriver/native/exec.go
View file

@ -20,9 +20,6 @@ func (d *driver) Exec(c *execdriver.Command, processConfig *execdriver.ProcessCo
return -1, fmt.Errorf("No active container exists with ID %s", c.ID)
}
var term execdriver.Terminal
var err error
p := &libcontainer.Process{
Args: append([]string{processConfig.Entrypoint}, processConfig.Arguments...),
Env: c.ProcessConfig.Env,
@ -34,29 +31,11 @@ func (d *driver) Exec(c *execdriver.Command, processConfig *execdriver.ProcessCo
p.Capabilities = execdriver.GetAllCapabilities()
}
if processConfig.Tty {
config := active.Config()
rootuid, err := config.HostUID()
if err != nil {
return -1, err
}
cons, err := p.NewConsole(rootuid)
if err != nil {
return -1, err
}
term, err = NewTtyConsole(cons, pipes, rootuid)
} else {
p.Stdout = pipes.Stdout
p.Stderr = pipes.Stderr
p.Stdin = pipes.Stdin
term = &execdriver.StdConsole{}
}
if err != nil {
config := active.Config()
if err := setupPipes(&config, processConfig, p, pipes); err != nil {
return -1, err
}
processConfig.Terminal = term
if err := active.Start(p); err != nil {
return -1, err
}

38
integration-cli/docker_cli_exec_test.go
View file

@ -38,44 +38,6 @@ func (s *DockerSuite) TestExec(c *check.C) {
}
func (s *DockerSuite) TestExecInteractiveStdinClose(c *check.C) {
out, _, err := runCommandWithOutput(exec.Command(dockerBinary, "run", "-itd", "busybox", "/bin/cat"))
if err != nil {
c.Fatal(err)
}
contId := strings.TrimSpace(out)
returnchan := make(chan struct{})
go func() {
var err error
cmd := exec.Command(dockerBinary, "exec", "-i", contId, "/bin/ls", "/")
cmd.Stdin = os.Stdin
if err != nil {
c.Fatal(err)
}
out, err := cmd.CombinedOutput()
if err != nil {
c.Fatal(err, string(out))
}
if string(out) == "" {
c.Fatalf("Output was empty, likely blocked by standard input")
}
returnchan <- struct{}{}
}()
select {
case <-returnchan:
case <-time.After(10 * time.Second):
c.Fatal("timed out running docker exec")
}
}
func (s *DockerSuite) TestExecInteractive(c *check.C) {
runCmd := exec.Command(dockerBinary, "run", "-d", "--name", "testing", "busybox", "sh", "-c", "echo test > /tmp/file && top")

47
integration-cli/docker_cli_exec_unix_test.go Normal file
View file

@ -0,0 +1,47 @@
// +build !windows,!test_no_exec
package main
import (
"bytes"
"io"
"os/exec"
"strings"
"time"
"github.com/go-check/check"
"github.com/kr/pty"
)
// regression test for #12546
func (s *DockerSuite) TestExecInteractiveStdinClose(c *check.C) {
out, _, err := runCommandWithOutput(exec.Command(dockerBinary, "run", "-itd", "busybox", "/bin/cat"))
if err != nil {
c.Fatal(err)
}
contId := strings.TrimSpace(out)
cmd := exec.Command(dockerBinary, "exec", "-i", contId, "echo", "-n", "hello")
p, err := pty.Start(cmd)
if err != nil {
c.Fatal(err)
}
b := bytes.NewBuffer(nil)
go io.Copy(b, p)
ch := make(chan error)
go func() { ch <- cmd.Wait() }()
select {
case err := <-ch:
if err != nil {
c.Errorf("cmd finished with error %v", err)
}
if output := b.String(); strings.TrimSpace(output) != "hello" {
c.Fatalf("Unexpected output %s", output)
}
case <-time.After(1 * time.Second):
c.Fatal("timed out running docker exec")
}
}