mirror of
https://github.com/linuxkit/linuxkit.git
synced 2025-09-30 04:16:38 +00:00
0c81ce19e8
This adds support for a runtime configuration file that can do: - `mkdir` to make a directory at runtime, eg in `/var` or `/tmp`, to avoid workarounds - `interface` that can create network interfaces in a container or move them - `bindNS` that can bind mount namespaces of an `onboot` container to a file so a service can be started in that namespace. It merges the `service` and `onboot` tools (in `init`) to avoid duplication. This also saves some size for eg LCOW which did not use the `onboot` code in `runc`. Signed-off-by: Justin Cormack <justin.cormack@docker.com>
97 lines
2.3 KiB
Go
97 lines
2.3 KiB
Go
package main
|
|
|
|
import (
|
|
"flag"
|
|
"fmt"
|
|
"os"
|
|
"path/filepath"
|
|
"strings"
|
|
|
|
log "github.com/sirupsen/logrus"
|
|
)
|
|
|
|
const (
|
|
defaultSocket = "/run/containerd/containerd.sock"
|
|
defaultPath = "/containers/services"
|
|
defaultContainerd = "/usr/bin/containerd"
|
|
installPath = "/usr/bin/service"
|
|
onbootPath = "/containers/onboot"
|
|
shutdownPath = "/containers/onshutdown"
|
|
)
|
|
|
|
var (
|
|
defaultLogFormatter = &log.TextFormatter{}
|
|
)
|
|
|
|
// infoFormatter overrides the default format for Info() log events to
|
|
// provide an easier to read output
|
|
type infoFormatter struct {
|
|
}
|
|
|
|
func (f *infoFormatter) Format(entry *log.Entry) ([]byte, error) {
|
|
if entry.Level == log.InfoLevel {
|
|
return append([]byte(entry.Message), '\n'), nil
|
|
}
|
|
return defaultLogFormatter.Format(entry)
|
|
}
|
|
|
|
func main() {
|
|
flag.Usage = func() {
|
|
fmt.Printf("USAGE: %s [options] COMMAND\n\n", filepath.Base(os.Args[0]))
|
|
fmt.Printf("Commands:\n")
|
|
fmt.Printf(" system-init Prepare the system at start of day\n")
|
|
fmt.Printf(" start Start a service\n")
|
|
fmt.Printf(" help Print this message\n")
|
|
fmt.Printf("\n")
|
|
fmt.Printf("Run '%s COMMAND --help' for more information on the command\n", filepath.Base(os.Args[0]))
|
|
fmt.Printf("\n")
|
|
fmt.Printf("Options:\n")
|
|
flag.PrintDefaults()
|
|
}
|
|
flagQuiet := flag.Bool("q", false, "Quiet execution")
|
|
flagVerbose := flag.Bool("v", false, "Verbose execution")
|
|
|
|
// Set up logging
|
|
log.SetFormatter(new(infoFormatter))
|
|
log.SetLevel(log.InfoLevel)
|
|
flag.Parse()
|
|
if *flagQuiet && *flagVerbose {
|
|
fmt.Printf("Can't set quiet and verbose flag at the same time\n")
|
|
os.Exit(1)
|
|
}
|
|
if *flagQuiet {
|
|
log.SetLevel(log.ErrorLevel)
|
|
}
|
|
if *flagVerbose {
|
|
// Switch back to the standard formatter
|
|
log.SetFormatter(defaultLogFormatter)
|
|
log.SetLevel(log.DebugLevel)
|
|
}
|
|
|
|
args := flag.Args()
|
|
if len(args) < 1 {
|
|
// check if called form startup scripts
|
|
command := os.Args[0]
|
|
switch {
|
|
case strings.Contains(command, "onboot"):
|
|
os.Exit(runcInit(onbootPath))
|
|
case strings.Contains(command, "onshutdown"):
|
|
os.Exit(runcInit(shutdownPath))
|
|
case strings.Contains(command, "containerd"):
|
|
systemInitCmd([]string{})
|
|
os.Exit(0)
|
|
}
|
|
}
|
|
|
|
switch args[0] {
|
|
case "start":
|
|
startCmd(args[1:])
|
|
case "system-init":
|
|
systemInitCmd(args[1:])
|
|
default:
|
|
fmt.Printf("%q is not valid command.\n\n", args[0])
|
|
flag.Usage()
|
|
os.Exit(1)
|
|
}
|
|
}
|