mirror of https://github.com/containers/podman.git
87 lines
2.1 KiB
Go
87 lines
2.1 KiB
Go
package main
|
|
|
|
import (
|
|
"fmt"
|
|
"strings"
|
|
|
|
"github.com/pkg/errors"
|
|
"github.com/projectatomic/libpod/libpod"
|
|
"github.com/urfave/cli"
|
|
)
|
|
|
|
var (
|
|
execFlags = []cli.Flag{
|
|
cli.StringSliceFlag{
|
|
Name: "env, e",
|
|
Usage: "Set environment variables",
|
|
},
|
|
cli.BoolFlag{
|
|
Name: "privileged",
|
|
Usage: "Give the process extended Linux capabilities inside the container. The default is false",
|
|
},
|
|
cli.BoolFlag{
|
|
Name: "tty, t",
|
|
Usage: "Allocate a pseudo-TTY. The default is false",
|
|
},
|
|
cli.StringFlag{
|
|
Name: "user, u",
|
|
Usage: "Sets the username or UID used and optionally the groupname or GID for the specified command",
|
|
},
|
|
}
|
|
execDescription = `
|
|
kpod exec
|
|
|
|
Run a command in a running container
|
|
`
|
|
|
|
execCommand = cli.Command{
|
|
Name: "exec",
|
|
Usage: "Run a process in a running container",
|
|
Description: execDescription,
|
|
Flags: execFlags,
|
|
Action: execCmd,
|
|
ArgsUsage: "CONTAINER-NAME",
|
|
}
|
|
)
|
|
|
|
func execCmd(c *cli.Context) error {
|
|
var envs []string
|
|
args := c.Args()
|
|
if len(args) < 1 {
|
|
return errors.Errorf("you must provide one container name or id")
|
|
}
|
|
if len(args) < 2 {
|
|
return errors.Errorf("you must provide a command to exec")
|
|
}
|
|
cmd := args[1:]
|
|
runtime, err := getRuntime(c)
|
|
if err != nil {
|
|
return errors.Wrapf(err, "error creating libpod runtime")
|
|
}
|
|
defer runtime.Shutdown(false)
|
|
|
|
ctr, err := runtime.LookupContainer(args[0])
|
|
if err != nil {
|
|
return errors.Wrapf(err, "unable to exec into %s", args[0])
|
|
}
|
|
// Create a list of keys provided by the user
|
|
var userEnvKeys []string
|
|
for _, env := range c.StringSlice("env") {
|
|
splitEnv := strings.Split(env, "=")
|
|
userEnvKeys = append(userEnvKeys, splitEnv[0])
|
|
}
|
|
|
|
envs = append(envs, c.StringSlice("env")...)
|
|
|
|
// if the default key isnt in the user-provided list, add the default
|
|
// key and value to the environment variables. this is needed to set
|
|
// PATH for example.
|
|
for k, v := range defaultEnvVariables {
|
|
if !libpod.StringInSlice(k, userEnvKeys) {
|
|
envs = append(envs, fmt.Sprintf("%s=%s", k, v))
|
|
}
|
|
}
|
|
|
|
return ctr.Exec(c.Bool("tty"), c.Bool("privileged"), envs, cmd, c.String("user"))
|
|
}
|