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|
package containers
import (
"fmt"
"os"
"strings"
"github.com/containers/common/pkg/completion"
"github.com/containers/podman/v3/cmd/podman/common"
"github.com/containers/podman/v3/cmd/podman/registry"
"github.com/containers/podman/v3/cmd/podman/utils"
"github.com/containers/podman/v3/libpod/define"
"github.com/containers/podman/v3/pkg/domain/entities"
"github.com/containers/podman/v3/pkg/errorhandling"
"github.com/containers/podman/v3/pkg/rootless"
"github.com/containers/podman/v3/pkg/specgen"
"github.com/pkg/errors"
"github.com/sirupsen/logrus"
"github.com/spf13/cobra"
)
var (
runDescription = "Runs a command in a new container from the given image"
runCommand = &cobra.Command{
Args: cobra.MinimumNArgs(1),
Use: "run [options] IMAGE [COMMAND [ARG...]]",
Short: "Run a command in a new container",
Long: runDescription,
RunE: run,
ValidArgsFunction: common.AutocompleteCreateRun,
Example: `podman run imageID ls -alF /etc
podman run --network=host imageID dnf -y install java
podman run --volume /var/hostdir:/var/ctrdir -i -t fedora /bin/bash`,
}
containerRunCommand = &cobra.Command{
Args: cobra.MinimumNArgs(1),
Use: runCommand.Use,
Short: runCommand.Short,
Long: runCommand.Long,
RunE: runCommand.RunE,
ValidArgsFunction: runCommand.ValidArgsFunction,
Example: `podman container run imageID ls -alF /etc
podman container run --network=host imageID dnf -y install java
podman container run --volume /var/hostdir:/var/ctrdir -i -t fedora /bin/bash`,
}
)
var (
runOpts = entities.ContainerRunOptions{
OutputStream: os.Stdout,
InputStream: os.Stdin,
ErrorStream: os.Stderr,
}
runRmi bool
)
func runFlags(cmd *cobra.Command) {
flags := cmd.Flags()
flags.SetInterspersed(false)
common.DefineCreateFlags(cmd, &cliVals)
common.DefineNetFlags(cmd)
flags.SetNormalizeFunc(utils.AliasFlags)
flags.BoolVar(&runOpts.SigProxy, "sig-proxy", true, "Proxy received signals to the process")
flags.BoolVar(&runRmi, "rmi", false, "Remove container image unless used by other containers")
preserveFdsFlagName := "preserve-fds"
flags.UintVar(&runOpts.PreserveFDs, "preserve-fds", 0, "Pass a number of additional file descriptors into the container")
_ = cmd.RegisterFlagCompletionFunc(preserveFdsFlagName, completion.AutocompleteNone)
flags.BoolVarP(&runOpts.Detach, "detach", "d", false, "Run container in background and print container ID")
detachKeysFlagName := "detach-keys"
flags.StringVar(&runOpts.DetachKeys, detachKeysFlagName, containerConfig.DetachKeys(), "Override the key sequence for detaching a container. Format is a single character `[a-Z]` or a comma separated sequence of `ctrl-<value>`, where `<value>` is one of: `a-cf`, `@`, `^`, `[`, `\\`, `]`, `^` or `_`")
_ = cmd.RegisterFlagCompletionFunc(detachKeysFlagName, common.AutocompleteDetachKeys)
_ = flags.MarkHidden("signature-policy")
if registry.IsRemote() {
_ = flags.MarkHidden("http-proxy")
_ = flags.MarkHidden("preserve-fds")
}
}
func init() {
registry.Commands = append(registry.Commands, registry.CliCommand{
Mode: []entities.EngineMode{entities.ABIMode, entities.TunnelMode},
Command: runCommand,
})
runFlags(runCommand)
registry.Commands = append(registry.Commands, registry.CliCommand{
Mode: []entities.EngineMode{entities.ABIMode, entities.TunnelMode},
Command: containerRunCommand,
Parent: containerCmd,
})
runFlags(containerRunCommand)
}
func run(cmd *cobra.Command, args []string) error {
var err error
cliVals.Net, err = common.NetFlagsToNetOptions(cmd)
if err != nil {
return err
}
if af := cliVals.Authfile; len(af) > 0 {
if _, err := os.Stat(af); err != nil {
return err
}
}
runOpts.CIDFile = cliVals.CIDFile
runOpts.Rm = cliVals.Rm
if err := createInit(cmd); err != nil {
return err
}
for fd := 3; fd < int(3+runOpts.PreserveFDs); fd++ {
if !rootless.IsFdInherited(fd) {
return errors.Errorf("file descriptor %d is not available - the preserve-fds option requires that file descriptors must be passed", fd)
}
}
imageName := args[0]
rawImageName := ""
if !cliVals.RootFS {
rawImageName = args[0]
name, err := pullImage(args[0])
if err != nil {
return err
}
imageName = name
}
if cliVals.Replace {
if err := replaceContainer(cliVals.Name); err != nil {
return err
}
}
// If -i is not set, clear stdin
if !cliVals.Interactive {
runOpts.InputStream = nil
}
// If attach is set, clear stdin/stdout/stderr and only attach requested
if cmd.Flag("attach").Changed {
runOpts.OutputStream = nil
runOpts.ErrorStream = nil
if !cliVals.Interactive {
runOpts.InputStream = nil
}
for _, stream := range cliVals.Attach {
switch strings.ToLower(stream) {
case "stdout":
runOpts.OutputStream = os.Stdout
case "stderr":
runOpts.ErrorStream = os.Stderr
case "stdin":
runOpts.InputStream = os.Stdin
default:
return errors.Wrapf(define.ErrInvalidArg, "invalid stream %q for --attach - must be one of stdin, stdout, or stderr", stream)
}
}
}
cliVals.PreserveFDs = runOpts.PreserveFDs
s := specgen.NewSpecGenerator(imageName, cliVals.RootFS)
if err := common.FillOutSpecGen(s, &cliVals, args); err != nil {
return err
}
s.RawImageName = rawImageName
runOpts.Spec = s
if _, err := createPodIfNecessary(s, cliVals.Net); err != nil {
return err
}
report, err := registry.ContainerEngine().ContainerRun(registry.GetContext(), runOpts)
// report.ExitCode is set by ContainerRun even it it returns an error
if report != nil {
registry.SetExitCode(report.ExitCode)
}
if err != nil {
return err
}
if runOpts.Detach {
fmt.Println(report.Id)
return nil
}
if runRmi {
_, rmErrors := registry.ImageEngine().Remove(registry.GetContext(), []string{imageName}, entities.ImageRemoveOptions{})
if len(rmErrors) > 0 {
logrus.Errorf("%s", errorhandling.JoinErrors(rmErrors))
}
}
return nil
}
|
