269 lines
9.3 KiB
Go
269 lines
9.3 KiB
Go
// +build !remoteclient
|
|
// +build linux
|
|
|
|
package main
|
|
|
|
import (
|
|
"context"
|
|
"fmt"
|
|
"io/ioutil"
|
|
"log/syslog"
|
|
"os"
|
|
"runtime/pprof"
|
|
"strconv"
|
|
"strings"
|
|
"syscall"
|
|
|
|
"github.com/containers/libpod/cmd/podman/cliconfig"
|
|
"github.com/containers/libpod/cmd/podman/libpodruntime"
|
|
"github.com/containers/libpod/libpod"
|
|
"github.com/containers/libpod/pkg/cgroups"
|
|
"github.com/containers/libpod/pkg/rootless"
|
|
"github.com/containers/libpod/pkg/tracing"
|
|
"github.com/containers/libpod/pkg/util"
|
|
"github.com/containers/libpod/utils"
|
|
"github.com/opentracing/opentracing-go"
|
|
"github.com/pkg/errors"
|
|
"github.com/sirupsen/logrus"
|
|
lsyslog "github.com/sirupsen/logrus/hooks/syslog"
|
|
"github.com/spf13/cobra"
|
|
)
|
|
|
|
const remote = false
|
|
|
|
func init() {
|
|
cgroupManager := libpod.SystemdCgroupsManager
|
|
if runtimeConfig, err := libpod.DefaultRuntimeConfig(); err == nil {
|
|
cgroupManager = runtimeConfig.CgroupManager
|
|
}
|
|
cgroupHelp := "Cgroup manager to use (cgroupfs or systemd)"
|
|
cgroupv2, _ := cgroups.IsCgroup2UnifiedMode()
|
|
if rootless.IsRootless() && !cgroupv2 {
|
|
cgroupManager = ""
|
|
cgroupHelp = "Cgroup manager is not supported in rootless mode"
|
|
}
|
|
rootCmd.PersistentFlags().StringVar(&MainGlobalOpts.CGroupManager, "cgroup-manager", cgroupManager, cgroupHelp)
|
|
// -c is deprecated due to conflict with -c on subcommands
|
|
rootCmd.PersistentFlags().StringVar(&MainGlobalOpts.CpuProfile, "cpu-profile", "", "Path for the cpu profiling results")
|
|
rootCmd.PersistentFlags().StringVar(&MainGlobalOpts.Config, "config", "", "Path of a libpod config file detailing container server configuration options")
|
|
rootCmd.PersistentFlags().StringVar(&MainGlobalOpts.ConmonPath, "conmon", "", "Path of the conmon binary")
|
|
rootCmd.PersistentFlags().StringVar(&MainGlobalOpts.NetworkCmdPath, "network-cmd-path", "", "Path to the command for configuring the network")
|
|
rootCmd.PersistentFlags().StringVar(&MainGlobalOpts.CniConfigDir, "cni-config-dir", "", "Path of the configuration directory for CNI networks")
|
|
rootCmd.PersistentFlags().StringVar(&MainGlobalOpts.DefaultMountsFile, "default-mounts-file", "", "Path to default mounts file")
|
|
if err := rootCmd.PersistentFlags().MarkHidden("default-mounts-file"); err != nil {
|
|
logrus.Error("unable to mark default-mounts-file flag as hidden")
|
|
}
|
|
rootCmd.PersistentFlags().StringVar(&MainGlobalOpts.EventsBackend, "events-backend", "", "Events backend to use")
|
|
// Override default --help information of `--help` global flag
|
|
var dummyHelp bool
|
|
rootCmd.PersistentFlags().BoolVar(&dummyHelp, "help", false, "Help for podman")
|
|
rootCmd.PersistentFlags().StringSliceVar(&MainGlobalOpts.HooksDir, "hooks-dir", []string{}, "Set the OCI hooks directory path (may be set multiple times)")
|
|
rootCmd.PersistentFlags().StringVar(&MainGlobalOpts.LogLevel, "log-level", "error", "Log messages above specified level: debug, info, warn, error, fatal or panic")
|
|
rootCmd.PersistentFlags().IntVar(&MainGlobalOpts.MaxWorks, "max-workers", 0, "The maximum number of workers for parallel operations")
|
|
if err := rootCmd.PersistentFlags().MarkHidden("max-workers"); err != nil {
|
|
logrus.Error("unable to mark max-workers flag as hidden")
|
|
}
|
|
rootCmd.PersistentFlags().StringVar(&MainGlobalOpts.Namespace, "namespace", "", "Set the libpod namespace, used to create separate views of the containers and pods on the system")
|
|
rootCmd.PersistentFlags().StringVar(&MainGlobalOpts.Root, "root", "", "Path to the root directory in which data, including images, is stored")
|
|
rootCmd.PersistentFlags().StringVar(&MainGlobalOpts.Runroot, "runroot", "", "Path to the 'run directory' where all state information is stored")
|
|
rootCmd.PersistentFlags().StringVar(&MainGlobalOpts.Runtime, "runtime", "", "Path to the OCI-compatible binary used to run containers, default is /usr/bin/runc")
|
|
// -s is depracated due to conflict with -s on subcommands
|
|
rootCmd.PersistentFlags().StringVar(&MainGlobalOpts.StorageDriver, "storage-driver", "", "Select which storage driver is used to manage storage of images and containers (default is overlay)")
|
|
rootCmd.PersistentFlags().StringArrayVar(&MainGlobalOpts.StorageOpts, "storage-opt", []string{}, "Used to pass an option to the storage driver")
|
|
rootCmd.PersistentFlags().BoolVar(&MainGlobalOpts.Syslog, "syslog", false, "Output logging information to syslog as well as the console")
|
|
|
|
rootCmd.PersistentFlags().StringVar(&MainGlobalOpts.TmpDir, "tmpdir", "", "Path to the tmp directory")
|
|
rootCmd.PersistentFlags().BoolVar(&MainGlobalOpts.Trace, "trace", false, "Enable opentracing output")
|
|
}
|
|
|
|
func setSyslog() error {
|
|
if MainGlobalOpts.Syslog {
|
|
hook, err := lsyslog.NewSyslogHook("", "", syslog.LOG_INFO, "")
|
|
if err == nil {
|
|
logrus.AddHook(hook)
|
|
return nil
|
|
}
|
|
return err
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func profileOn(cmd *cobra.Command) error {
|
|
if cmd.Flag("cpu-profile").Changed {
|
|
f, err := os.Create(MainGlobalOpts.CpuProfile)
|
|
if err != nil {
|
|
return errors.Wrapf(err, "unable to create cpu profiling file %s",
|
|
MainGlobalOpts.CpuProfile)
|
|
}
|
|
if err := pprof.StartCPUProfile(f); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
|
|
if cmd.Flag("trace").Changed {
|
|
var tracer opentracing.Tracer
|
|
tracer, closer = tracing.Init("podman")
|
|
opentracing.SetGlobalTracer(tracer)
|
|
|
|
span = tracer.StartSpan("before-context")
|
|
|
|
Ctx = opentracing.ContextWithSpan(context.Background(), span)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func profileOff(cmd *cobra.Command) error {
|
|
if cmd.Flag("cpu-profile").Changed {
|
|
pprof.StopCPUProfile()
|
|
}
|
|
if cmd.Flag("trace").Changed {
|
|
span.Finish()
|
|
closer.Close()
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func movePauseProcessToScope() error {
|
|
pausePidPath, err := util.GetRootlessPauseProcessPidPath()
|
|
if err != nil {
|
|
return errors.Wrapf(err, "could not get pause process pid file path")
|
|
}
|
|
|
|
data, err := ioutil.ReadFile(pausePidPath)
|
|
if err != nil {
|
|
return errors.Wrapf(err, "cannot read pause pid file")
|
|
}
|
|
pid, err := strconv.ParseUint(string(data), 10, 0)
|
|
if err != nil {
|
|
return errors.Wrapf(err, "cannot parse pid file %s", pausePidPath)
|
|
}
|
|
|
|
return utils.RunUnderSystemdScope(int(pid), "user.slice", "podman-pause.scope")
|
|
}
|
|
|
|
func setupRootless(cmd *cobra.Command, args []string) error {
|
|
if !rootless.IsRootless() {
|
|
return nil
|
|
}
|
|
|
|
matches, err := rootless.ConfigurationMatches()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if !matches {
|
|
logrus.Warningf("the current user namespace doesn't match the configuration in /etc/subuid or /etc/subgid")
|
|
logrus.Warningf("you can use `%s system migrate` to recreate the user namespace and restart the containers", os.Args[0])
|
|
}
|
|
|
|
podmanCmd := cliconfig.PodmanCommand{
|
|
Command: cmd,
|
|
InputArgs: args,
|
|
GlobalFlags: MainGlobalOpts,
|
|
Remote: remoteclient,
|
|
}
|
|
|
|
runtime, err := libpodruntime.GetRuntime(getContext(), &podmanCmd)
|
|
if err != nil {
|
|
return errors.Wrapf(err, "could not get runtime")
|
|
}
|
|
defer runtime.DeferredShutdown(false)
|
|
|
|
// do it only after podman has already re-execed and running with uid==0.
|
|
if os.Geteuid() == 0 {
|
|
ownsCgroup, err := cgroups.UserOwnsCurrentSystemdCgroup()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
conf, err := runtime.GetConfig()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if !ownsCgroup {
|
|
unitName := fmt.Sprintf("podman-%d.scope", os.Getpid())
|
|
if err := utils.RunUnderSystemdScope(os.Getpid(), "user.slice", unitName); err != nil {
|
|
if conf.CgroupManager == libpod.SystemdCgroupsManager {
|
|
logrus.Warnf("Failed to add podman to systemd sandbox cgroup: %v", err)
|
|
} else {
|
|
logrus.Debugf("Failed to add podman to systemd sandbox cgroup: %v", err)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if os.Geteuid() == 0 || cmd == _searchCommand || cmd == _versionCommand || cmd == _mountCommand || cmd == _migrateCommand || strings.HasPrefix(cmd.Use, "help") {
|
|
return nil
|
|
}
|
|
|
|
pausePidPath, err := util.GetRootlessPauseProcessPidPath()
|
|
if err != nil {
|
|
return errors.Wrapf(err, "could not get pause process pid file path")
|
|
}
|
|
|
|
became, ret, err := rootless.TryJoinPauseProcess(pausePidPath)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if became {
|
|
os.Exit(ret)
|
|
}
|
|
|
|
// if there is no pid file, try to join existing containers, and create a pause process.
|
|
ctrs, err := runtime.GetRunningContainers()
|
|
if err != nil {
|
|
logrus.Errorf(err.Error())
|
|
os.Exit(1)
|
|
}
|
|
|
|
paths := []string{}
|
|
for _, ctr := range ctrs {
|
|
paths = append(paths, ctr.Config().ConmonPidFile)
|
|
}
|
|
|
|
became, ret, err = rootless.TryJoinFromFilePaths(pausePidPath, true, paths)
|
|
if err := movePauseProcessToScope(); err != nil {
|
|
conf, err := runtime.GetConfig()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if conf.CgroupManager == libpod.SystemdCgroupsManager {
|
|
logrus.Warnf("Failed to add pause process to systemd sandbox cgroup: %v", err)
|
|
} else {
|
|
logrus.Debugf("Failed to add pause process to systemd sandbox cgroup: %v", err)
|
|
}
|
|
}
|
|
if err != nil {
|
|
logrus.Errorf(err.Error())
|
|
os.Exit(1)
|
|
}
|
|
if became {
|
|
os.Exit(ret)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func setRLimits() error {
|
|
rlimits := new(syscall.Rlimit)
|
|
rlimits.Cur = 1048576
|
|
rlimits.Max = 1048576
|
|
if err := syscall.Setrlimit(syscall.RLIMIT_NOFILE, rlimits); err != nil {
|
|
if err := syscall.Getrlimit(syscall.RLIMIT_NOFILE, rlimits); err != nil {
|
|
return errors.Wrapf(err, "error getting rlimits")
|
|
}
|
|
rlimits.Cur = rlimits.Max
|
|
if err := syscall.Setrlimit(syscall.RLIMIT_NOFILE, rlimits); err != nil {
|
|
return errors.Wrapf(err, "error setting new rlimits")
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func setUMask() {
|
|
// Be sure we can create directories with 0755 mode.
|
|
syscall.Umask(0022)
|
|
}
|
|
|
|
// checkInput can be used to verify any of the globalopt values
|
|
func checkInput() error {
|
|
return nil
|
|
}
|