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package main
import (
"github.com/containers/libpod/cmd/podman/cliconfig"
"github.com/containers/libpod/libpod/define"
"github.com/containers/libpod/pkg/adapter"
"github.com/pkg/errors"
"github.com/spf13/cobra"
)
var (
execCommand cliconfig.ExecValues
execDescription = `Execute the specified command inside a running container.
`
_execCommand = &cobra.Command{
Use: "exec [flags] CONTAINER [COMMAND [ARG...]]",
Short: "Run a process in a running container",
Long: execDescription,
RunE: func(cmd *cobra.Command, args []string) error {
execCommand.InputArgs = args
execCommand.GlobalFlags = MainGlobalOpts
execCommand.Remote = remoteclient
return execCmd(&execCommand)
},
Example: `podman exec -it ctrID ls
podman exec -it -w /tmp myCtr pwd
podman exec --user root ctrID ls`,
}
)
func init() {
execCommand.Command = _execCommand
execCommand.SetHelpTemplate(HelpTemplate())
execCommand.SetUsageTemplate(UsageTemplate())
flags := execCommand.Flags()
flags.SetInterspersed(false)
flags.StringVar(&execCommand.DetachKeys, "detach-keys", define.DefaultDetachKeys, "Select the key sequence for detaching a container. Format is a single character [a-Z] or ctrl-<value> where <value> is one of: a-z, @, ^, [, , or _")
// Clear the default, the value specified in the config file should have the
// priority
execCommand.DetachKeys = ""
flags.StringArrayVarP(&execCommand.Env, "env", "e", []string{}, "Set environment variables")
flags.BoolVarP(&execCommand.Interactive, "interactive", "i", false, "Keep STDIN open even if not attached")
flags.BoolVarP(&execCommand.Latest, "latest", "l", false, "Act on the latest container podman is aware of")
flags.BoolVar(&execCommand.Privileged, "privileged", false, "Give the process extended Linux capabilities inside the container. The default is false")
flags.BoolVarP(&execCommand.Tty, "tty", "t", false, "Allocate a pseudo-TTY. The default is false")
flags.StringVarP(&execCommand.User, "user", "u", "", "Sets the username or UID used and optionally the groupname or GID for the specified command")
flags.IntVar(&execCommand.PreserveFDs, "preserve-fds", 0, "Pass N additional file descriptors to the container")
flags.StringVarP(&execCommand.Workdir, "workdir", "w", "", "Working directory inside the container")
markFlagHiddenForRemoteClient("latest", flags)
markFlagHiddenForRemoteClient("preserve-fds", flags)
}
func execCmd(c *cliconfig.ExecValues) error {
argLen := len(c.InputArgs)
if c.Latest {
if argLen < 1 {
return errors.Errorf("you must provide a command to exec")
}
} else {
if argLen < 1 {
return errors.Errorf("you must provide one container name or id")
}
if argLen < 2 {
return errors.Errorf("you must provide a command to exec")
}
}
runtime, err := adapter.GetRuntimeNoStore(getContext(), &c.PodmanCommand)
if err != nil {
return errors.Wrapf(err, "error creating libpod runtime")
}
defer runtime.DeferredShutdown(false)
exitCode, err = runtime.ExecContainer(getContext(), c)
return err
}
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