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package main
import (
"fmt"
"os"
"os/exec"
"runtime/pprof"
"syscall"
"github.com/containers/storage/pkg/reexec"
"github.com/pkg/errors"
"github.com/projectatomic/libpod/pkg/hooks"
_ "github.com/projectatomic/libpod/pkg/hooks/0.1.0"
"github.com/projectatomic/libpod/pkg/rootless"
"github.com/projectatomic/libpod/version"
"github.com/sirupsen/logrus"
"github.com/urfave/cli"
)
// This is populated by the Makefile from the VERSION file
// in the repository
var (
exitCode = 125
)
func main() {
debug := false
cpuProfile := false
became, err := rootless.BecomeRootInUserNS()
if err != nil {
logrus.Errorf(err.Error())
os.Exit(1)
}
if became {
os.Exit(0)
}
if reexec.Init() {
return
}
app := cli.NewApp()
app.Name = "podman"
app.Usage = "manage pods and images"
app.Version = version.Version
app.Commands = []cli.Command{
attachCommand,
commitCommand,
containerCommand,
buildCommand,
createCommand,
diffCommand,
execCommand,
exportCommand,
historyCommand,
imageCommand,
imagesCommand,
importCommand,
infoCommand,
inspectCommand,
killCommand,
loadCommand,
loginCommand,
logoutCommand,
logsCommand,
mountCommand,
pauseCommand,
psCommand,
portCommand,
pullCommand,
pushCommand,
restartCommand,
rmCommand,
rmiCommand,
runCommand,
saveCommand,
searchCommand,
startCommand,
statsCommand,
stopCommand,
tagCommand,
topCommand,
umountCommand,
unpauseCommand,
versionCommand,
waitCommand,
}
if varlinkCommand != nil {
app.Commands = append(app.Commands, *varlinkCommand)
}
app.Before = func(c *cli.Context) error {
logLevel := c.GlobalString("log-level")
if logLevel != "" {
level, err := logrus.ParseLevel(logLevel)
if err != nil {
return err
}
logrus.SetLevel(level)
}
if logLevel == "debug" {
debug = true
}
if c.GlobalIsSet("cpu-profile") {
f, err := os.Create(c.GlobalString("cpu-profile"))
if err != nil {
return errors.Wrapf(err, "unable to create cpu profiling file %s",
c.GlobalString("cpu-profile"))
}
cpuProfile = true
pprof.StartCPUProfile(f)
}
return nil
}
app.After = func(*cli.Context) error {
// called by Run() when the command handler succeeds
if cpuProfile {
pprof.StopCPUProfile()
}
return nil
}
app.Flags = []cli.Flag{
cli.StringFlag{
Name: "cgroup-manager",
Usage: "cgroup manager to use (cgroupfs or systemd, default cgroupfs)",
},
cli.StringFlag{
Name: "cni-config-dir",
Usage: "path of the configuration directory for CNI networks",
},
cli.StringFlag{
Name: "config, c",
Usage: "path of a config file detailing container server configuration options",
},
cli.StringFlag{
Name: "conmon",
Usage: "path of the conmon binary",
},
cli.StringFlag{
Name: "cpu-profile",
Usage: "path for the cpu profiling results",
},
cli.StringFlag{
Name: "default-mounts-file",
Usage: "path to default mounts file",
Hidden: true,
},
cli.StringFlag{
Name: "hooks-dir-path",
Usage: "set the OCI hooks directory path",
Value: hooks.DefaultDir,
Hidden: true,
},
cli.StringFlag{
Name: "log-level",
Usage: "log messages above specified level: debug, info, warn, error (default), fatal or panic",
Value: "error",
},
cli.StringFlag{
Name: "root",
Usage: "path to the root directory in which data, including images, is stored",
},
cli.StringFlag{
Name: "tmpdir",
Usage: "path to the tmp directory",
},
cli.StringFlag{
Name: "runroot",
Usage: "path to the 'run directory' where all state information is stored",
},
cli.StringFlag{
Name: "runtime",
Usage: "path to the OCI-compatible binary used to run containers, default is /usr/bin/runc",
},
cli.StringFlag{
Name: "storage-driver, s",
Usage: "select which storage driver is used to manage storage of images and containers (default is overlay)",
},
cli.StringSliceFlag{
Name: "storage-opt",
Usage: "used to pass an option to the storage driver",
},
}
if _, err := os.Stat("/etc/containers/registries.conf"); err != nil {
if os.IsNotExist(err) {
logrus.Warn("unable to find /etc/containers/registries.conf. some podman (image shortnames) commands may be limited")
}
}
if err := app.Run(os.Args); err != nil {
if debug {
logrus.Errorf(err.Error())
} else {
// Retrieve the exit error from the exec call, if it exists
if ee, ok := err.(*exec.ExitError); ok {
if status, ok := ee.Sys().(syscall.WaitStatus); ok {
exitCode = status.ExitStatus()
}
}
fmt.Fprintln(os.Stderr, err.Error())
}
} else {
// The exitCode modified from 125, indicates an application
// running inside of a container failed, as opposed to the
// podman command failed. Must exit with that exit code
// otherwise command exited correctly.
if exitCode == 125 {
exitCode = 0
}
}
os.Exit(exitCode)
}
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