spiegel_podman/cmd/podman/exec.go
Peter Hunt a1a79c08b7 Implement conmon exec
This includes:
	Implement exec -i and fix some typos in description of -i docs
	pass failed runtime status to caller
	Add resize handling for a terminal connection
	Customize exec systemd-cgroup slice
	fix healthcheck
	fix top
	add --detach-keys
	Implement podman-remote exec (jhonce)
	* Cleanup some orphaned code (jhonce)
	adapt remote exec for conmon exec (pehunt)
	Fix healthcheck and exec to match docs
		Introduce two new OCIRuntime errors to more comprehensively describe situations in which the runtime can error
		Use these different errors in branching for exit code in healthcheck and exec
	Set conmon to use new api version

Signed-off-by: Jhon Honce <jhonce@redhat.com>

Signed-off-by: Peter Hunt <pehunt@redhat.com>
2019-07-22 15:57:23 -04:00

80 lines
3 KiB
Go

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", "", "Override 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 _")
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)
if errors.Cause(err) == define.ErrOCIRuntimePermissionDenied {
exitCode = 126
}
if errors.Cause(err) == define.ErrOCIRuntimeNotFound {
exitCode = 127
}
return err
}