553 lines
18 KiB
Go
553 lines
18 KiB
Go
package cmd
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import (
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"os"
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"fmt"
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"sync"
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"strings"
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"io/ioutil"
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"github.com/spf13/cobra"
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"github.com/spf13/viper"
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// TODO : Use log
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log "github.com/sirupsen/logrus"
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)
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const (
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gVersion = "0.42a"
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// TODO : Get from $jail_zpool/defaults.json
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MIN_DYN_DEVFS_RULESET = 1000
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)
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type createArgs struct {
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Release string
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BaseJail bool
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Datastore string
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JailType string
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}
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var (
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gApiAddress string
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gApiPort int
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gJailHost JailHost
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gJails []Jail
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gDatastores []Datastore
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gUseSudo bool
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gForce bool
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gDebug bool
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gCreateArgs createArgs
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gConfigFile string
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gDisplayJColumns string
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gDisplaySColumns string
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gDisplayDColumns string
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gFilterJails string
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gFilterSnaps string
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gFilterDS string
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gSortJailFields string
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gSortSnapFields string
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gSortDSFields string
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gNoJailLineSep bool
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gNoSnapLineSep bool
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gNoDSLineSep bool
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gHostVersion float64
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gTimeZone string
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gSnapshotName string
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gMigrateDestDatastore string
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gYesToAll bool
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gFetchRelease string
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gFetchIntoDS string
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gFetchFrom string
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gUpgradeRelease string
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// For a based jail, these are directories binded to basejail
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gBaseDirs = []string{"bin", "boot", "lib", "libexec", "rescue", "sbin", "usr/bin", "usr/include",
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"usr/lib", "usr/lib32", "usr/libdata", "usr/libexec", "usr/sbin", "usr/share"}
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// These directories are to be created empty
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gEmptyDirs = []string{"dev", "media", "mnt", "net", "proc"}
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// Copy these from base template
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gCopyDirs = []string{"etc", "root", "tmp", "var"}
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gMdevfs sync.Mutex
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rootCmd = &cobra.Command{
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Use: "gocage",
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Short: "GoCage is a FreeBSD Jail management tool",
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Long: `GoCage is a jail management tool. It support VNET, host-only, NAT networks. Provides snapshots and cloning.
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It support iocage jails and can coexist with iocage.`,
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Run: func(cmd *cobra.Command, args []string) {
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fv, _ := getFreeBSDVersion()
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fmt.Printf("GoCage v.%s on FreeBSD %d.%d-%s\n", gVersion, fv.major, fv.minor, fv.flavor)
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fmt.Printf("Use -h flag to display help\n")
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},
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}
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versionCmd = &cobra.Command{
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Use: "version",
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Short: "Print the version number of GoCage",
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Long: `Let this show you how much fail I had to get this *cough* perfect`,
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Run: func(cmd *cobra.Command, args []string) {
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fv, _ := getFreeBSDVersion()
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fmt.Printf("GoCage v.%s on FreeBSD %d.%d-%s\n", gVersion, fv.major, fv.minor, fv.flavor)
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},
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}
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/* TODO
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Initialize datastore(s) /iocage, /iocage/jails
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Put defaults.json, update it with hostid,interfaces, and maybe other necessary fields
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Initialize bridge
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initCmd = &cobra.Command{
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Use: "init",
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Short: "Initialize GoCage",
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//Long: `Let this show you how much fail I had to get this *cough* perfect`,
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Run: func(cmd *cobra.Command, args []string) {
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fv, _ := getFreeBSDVersion()
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fmt.Printf("GoCage v.%s on FreeBSD %d.%d-%s\n", gVersion, fv.major, fv.minor, fv.flavor)
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},
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}*/
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listCmd = &cobra.Command{
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Use: "list",
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Short: "Print jails",
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Long: `Display jails, their IP and OS.
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Jail list can be restricted by adding name on command line
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ex: gocage list srv-db srv-web`,
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Run: func(cmd *cobra.Command, args []string) {
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ListJails(args, true)
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},
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}
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listPropsCmd = &cobra.Command{
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Use: "properties",
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Short: "Print jails properties",
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Long: "Display jails properties. You can use properties to filter, get or set them.",
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Run: func(cmd *cobra.Command, args []string) {
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out, err := ListJailsProps("text")
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if err != nil {
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fmt.Printf("Error listing properties : %v\n", err)
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} else {
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fmt.Printf("%s\n", out)
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}
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},
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}
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destroyCmd = &cobra.Command{
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Use: "destroy",
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Short: "destroy jails",
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Long: `Destroy jail filesystem, snapshots and configuration file.`,
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Run: func(cmd *cobra.Command, args []string) {
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ListJails(args, false)
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DestroyJails(args)
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},
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}
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stopCmd = &cobra.Command{
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Use: "stop",
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Short: "stop jail",
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Long: "shutdown jail",
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Run: func(cmd *cobra.Command, args []string) {
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// Load inventory
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ListJails(args, false)
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if len(args) == 0 {
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StopAllRunningJails()
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} else {
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StopJail(args)
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}
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},
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}
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startCmd = &cobra.Command{
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Use: "start",
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Short: "start jail",
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Run: func(cmd *cobra.Command, args []string) {
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// Load inventory
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ListJails(args, false)
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if len(args) == 0 {
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StartJailsAtBoot()
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} else {
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StartJail(args)
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}
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},
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}
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restartCmd = &cobra.Command{
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Use: "restart",
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Short: "restart jail",
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Run: func(cmd *cobra.Command, args []string) {
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// Load inventory
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ListJails(args, false)
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StopJail(args)
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StartJail(args)
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},
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}
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shellCmd = &cobra.Command {
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Use: "console",
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Short: "Execute shell on jail",
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Run: func(cmd *cobra.Command, args []string) {
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// Load inventory
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ListJails(args, false)
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ShellJail(args)
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},
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}
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setCmd = &cobra.Command{
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Use: "set",
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Short: "Set a jail property",
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Long: `Set jail property value. Specify property=value, end command with jail name.
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Multiples properties can be specified, separated with space (Ex: gocage set allow_mlock=1 boot=1 myjail)`,
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Run: func(cmd *cobra.Command, args []string) {
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// Load inventory
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ListJails(args, false)
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SetJailProperties(args)
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},
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}
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getCmd = &cobra.Command{
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Use: "get",
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Short: "Get a jail property",
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Long: `Get jail property value. Specify property, end command with jail name.
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Multiples properties can be specified, separated with space (Ex: gocage get allow_mlock boot myjail)
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For all properties specify "all" (Ex: gocage get all myjail)`,
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Run: func(cmd *cobra.Command, args []string) {
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// Load inventory
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ListJails(args, false)
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GetJailProperties(args)
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},
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}
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snapshotCmd = &cobra.Command{
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Use: "snapshot",
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Short: "snapshot jail",
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Long: "Commands to manage jail snapshots. If no arguments given, ",
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Run: func(cmd *cobra.Command, args []string) {
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},
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}
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snapshotListCmd = &cobra.Command{
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Use: "list",
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Short: "list snapshots",
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Long: `List snapshots of a jail by specifying its name.
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List all snapshots if no jail name specified.
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You can specify multiple jails.`,
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Run: func(cmd *cobra.Command, args []string) {
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// Load inventory
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ListJails(args, false)
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ListJailsSnapshots(args)
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},
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}
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snapshotCreateCmd = &cobra.Command{
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Use: "create",
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Short: "create snapshots",
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Long: `Create snapshot of a jail by specifying snapshot name and jail name.`,
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// You can specify multiple jails.`,
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Run: func(cmd *cobra.Command, args []string) {
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// Load inventory
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ListJails(args, false)
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CreateJailSnapshot(args)
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},
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}
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snapshotRollbackCmd = &cobra.Command{
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Use: "rollback",
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Short: "Rollback snapshots",
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Long: `Rollback jail to specifyed snapshot.`,
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// You can specify multiple jails.`,
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Run: func(cmd *cobra.Command, args []string) {
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// Load inventory
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ListJails(args, false)
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RollbackJailSnapshot(args)
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},
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}
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snapshotDeleteCmd = &cobra.Command{
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Use: "destroy",
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Short: "destroy snapshots",
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Long: `Destroy snapshot of a jail by specifying snapshot name and jail name.
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You can specify multiple snapshots separated by comma.`,
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Run: func(cmd *cobra.Command, args []string) {
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// Load inventory
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ListJails(args, false)
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DeleteJailSnapshot(args)
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},
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}
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migrateCmd = &cobra.Command{
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Use: "migrate",
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Short: "Migrate jail to another datastore",
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Run: func(cmd *cobra.Command, args []string) {
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// Load inventory
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ListJails(args, false)
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MigrateJail(args)
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},
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}
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migrateCleanCmd = &cobra.Command{
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Use: "clean",
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Short: "Clean previous aborted/in error jail migration",
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Run: func(cmd *cobra.Command, args []string) {
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// Load inventory
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ListJails(args, false)
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err := CleanMigrateMess(args)
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if err != nil {
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fmt.Printf("%v", err)
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}
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},
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}
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datastoreCmd = &cobra.Command{
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Use: "datastore",
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Short: "list datastores",
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Long: "Commands to manage datastores. If no arguments given, list them.",
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Run: func(cmd *cobra.Command, args []string) {
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ListDatastores(args, true)
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},
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}
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datastoreListCmd = &cobra.Command{
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Use: "list",
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Short: "list datastores",
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Long: `List datastore by specifying its name.
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List all datastores if no name specified.
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You can specify multiple datastores.`,
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Run: func(cmd *cobra.Command, args []string) {
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ListDatastores(args, true)
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},
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}
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fetchCmd = &cobra.Command{
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Use: "fetch",
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Short: "Fetch FreeBSD release to local datastore",
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Run: func(cmd *cobra.Command, args []string) {
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err := fetchRelease(gFetchRelease, "http", gJailHost.arch, gFetchIntoDS, gFetchFrom)
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if err != nil {
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fmt.Printf("%v\n", err)
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} else {
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extractRelease(gFetchRelease, gFetchIntoDS)
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}
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},
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}
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updateCmd = &cobra.Command{
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Use: "update",
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Short: "Update FreeBSD release",
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Run: func(cmd *cobra.Command, args []string) {
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ListJails(args, false)
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UpdateJail(args)
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},
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}
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upgradeCmd = &cobra.Command{
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Use: "upgrade",
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Short: "Upgrade FreeBSD release",
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Run: func(cmd *cobra.Command, args []string) {
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ListJails(args, false)
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UpgradeJail(args)
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},
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}
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createCmd = &cobra.Command{
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Use: "create",
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Short: "Create jail",
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Run: func(cmd *cobra.Command, args []string) {
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ListJails(args, false)
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CreateJail(args)
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},
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}
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apiCmd = &cobra.Command{
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Use: "startapi",
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Short: "Run docage as a daemon, exposing API",
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Run: func(cmd *cobra.Command, args []string) {
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startApi(gApiAddress, gApiPort)
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},
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}
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testCmd = &cobra.Command{
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Use: "test",
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Short: "temporary command to test some code snippet",
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Run: func(cmd *cobra.Command, args []string) {
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fmt.Printf("Nope\n")
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},
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}
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)
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// TODO : Init log level and log output
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func init() {
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var err error
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cobra.OnInitialize(initConfig)
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// Global switches
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rootCmd.PersistentFlags().StringVarP(&gConfigFile, "config", "c", "/usr/local/etc/gocage.conf.yml", "GoCage configuration file")
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rootCmd.PersistentFlags().BoolVarP(&gUseSudo, "sudo", "u", false, "Use sudo to run commands")
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rootCmd.PersistentFlags().StringVarP(&gTimeZone, "timezone", "t", "", "Specify timezone. Will get from /var/db/zoneinfo if not set.")
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rootCmd.PersistentFlags().BoolVar(&gDebug, "debug", false, "Debug mode")
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// Command dependant switches
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// We reuse these flags in "gocage snapshot list myjail" and 'gocage datastore list" commands
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listCmd.Flags().StringVarP(&gDisplayJColumns, "outcol", "o", "JID,Name,Config.Release,Config.Ip4_addr,Running", "Show these columns in output")
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listCmd.Flags().BoolVarP(&gNoJailLineSep, "nolinesep", "l", false, "Do not display line separator between jails")
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listCmd.Flags().StringVarP(&gFilterJails, "filter", "f", "none", "Only display jails with these values. Ex: \"gocage list -f Config.Boot=1\" will only list started on boot jails")
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listCmd.Flags().StringVarP(&gSortJailFields, "sort", "s", "none", "Display jails sorted by field values. Ex: \"gocage list -s +Name,-Config.Priority\" will sort jails by their decreasing name, then increasing start priority. 3 critera max supported.")
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destroyCmd.Flags().BoolVarP(&gForce, "force", "f", false, "Force stop jail if running")
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snapshotListCmd.Flags().StringVarP(&gDisplaySColumns, "outcol", "o", "Jailname,Name,Creation,Referenced,Used", "Show these columns in output")
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snapshotListCmd.Flags().BoolVarP(&gNoSnapLineSep, "nolinesep", "l", false, "Do not display line separator between snapshots")
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snapshotListCmd.Flags().StringVarP(&gFilterSnaps, "filter", "f", "none", "Only display snapshots with these values. Ex: \"gocage snapshot list -f Config.Boot=1\" will only list started on boot jails")
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snapshotListCmd.Flags().StringVarP(&gSortSnapFields, "sort", "s", "none", "Display snapshots sorted by field values. Ex: \"gocage snapshot list -s +Jailname,-Used\" will sort snapshots by jail decreasing name, then increasing used space. 3 critera max supported.")
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datastoreListCmd.Flags().StringVarP(&gDisplayDColumns, "outcol", "o", "Name,Mountpoint,ZFSDataset,Available,Used,Referenced", "Show these columns in output")
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datastoreListCmd.Flags().BoolVarP(&gNoDSLineSep, "nolinesep", "l", false, "Do not display line separator between datastores")
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datastoreListCmd.Flags().StringVarP(&gFilterDS, "filter", "f", "none", "Only display datastores with these values. Ex: \"gocage datastore list -f Config.Boot=1\" will only list started on boot jails")
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datastoreListCmd.Flags().StringVarP(&gSortDSFields, "sort", "s", "none", "Display datastores sorted by field values. Ex: \"gocage datastore list -s +Jailname,-Used\" will sort snapshots by jail decreasing name, then increasing used space. 3 critera max supported.")
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// This is local flag : Only available to gocage snapshot create command
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snapshotCreateCmd.Flags().StringVarP(&gSnapshotName, "snapname", "n", "", "Name of the snapshot to create")
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snapshotCreateCmd.MarkFlagRequired("snapname")
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snapshotDeleteCmd.Flags().StringVarP(&gSnapshotName, "snapname", "n", "", "Name of the snapshot to destroy")
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snapshotDeleteCmd.MarkFlagRequired("snapname")
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snapshotRollbackCmd.Flags().StringVarP(&gSnapshotName, "snapname", "n", "", "Name of the snapshot to rollback to")
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snapshotRollbackCmd.MarkFlagRequired("snapname")
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migrateCmd.Flags().StringVarP(&gMigrateDestDatastore, "datastore", "d", "", "Path of destination datastore for jail (Ex: \"/iocage\")")
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migrateCmd.Flags().BoolVarP(&gYesToAll, "yes", "y", false, "Answer yes to all questions")
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migrateCmd.MarkFlagRequired("datastore")
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fetchCmd.Flags().StringVarP(&gFetchRelease, "release", "r", "", "Release to fetch (e.g.: \"13.1-RELEASE\"")
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fetchCmd.Flags().StringVarP(&gFetchIntoDS, "datastore", "o", "", "Datastore release will be saved to")
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fetchCmd.Flags().StringVarP(&gFetchFrom, "from", "d", "", "Repository to download from. Should contain XY.Z-RELEASE. File protocol supported")
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fetchCmd.MarkFlagRequired("release")
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fetchCmd.MarkFlagRequired("datastore")
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upgradeCmd.Flags().StringVarP(&gUpgradeRelease, "release", "r", "", "Release to upgrade to (e.g.: \"13.1-RELEASE\"")
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upgradeCmd.MarkFlagRequired("release")
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createCmd.Flags().StringVarP(&gCreateArgs.Release, "release", "r", "", "Release for the jail (e.g.: \"13.1-RELEASE\"")
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createCmd.Flags().BoolVarP(&gCreateArgs.BaseJail, "basejail", "b", false, "Basejail. This will create a jail mounted read only from a release, so every up(date|grade) made to this release will immediately propagate to new jail.\n")
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createCmd.Flags().StringVarP(&gCreateArgs.Datastore, "datastore", "d", "", "Datastore to create the jail on. Defaults to first declared in config.")
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apiCmd.Flags().StringVarP(&gApiAddress, "listen-addr", "l", "127.0.0.1", "API listening address")
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apiCmd.Flags().IntVarP(&gApiPort, "listen-port", "p", 1234, "API listening port")
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// Now declare commands
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rootCmd.AddCommand(versionCmd)
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rootCmd.AddCommand(listCmd)
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listCmd.AddCommand(listPropsCmd)
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rootCmd.AddCommand(stopCmd)
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rootCmd.AddCommand(startCmd)
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rootCmd.AddCommand(restartCmd)
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rootCmd.AddCommand(destroyCmd)
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rootCmd.AddCommand(shellCmd)
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rootCmd.AddCommand(getCmd)
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rootCmd.AddCommand(setCmd)
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rootCmd.AddCommand(snapshotCmd)
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rootCmd.AddCommand(migrateCmd)
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rootCmd.AddCommand(datastoreCmd)
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rootCmd.AddCommand(fetchCmd)
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rootCmd.AddCommand(updateCmd)
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rootCmd.AddCommand(upgradeCmd)
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rootCmd.AddCommand(createCmd)
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rootCmd.AddCommand(apiCmd)
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rootCmd.AddCommand(testCmd)
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snapshotCmd.AddCommand(snapshotListCmd)
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snapshotCmd.AddCommand(snapshotCreateCmd)
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snapshotCmd.AddCommand(snapshotDeleteCmd)
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snapshotCmd.AddCommand(snapshotRollbackCmd)
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migrateCmd.AddCommand(migrateCleanCmd)
|
|
datastoreCmd.AddCommand(datastoreListCmd)
|
|
|
|
// Get FreeBSD version, hostname, hostid
|
|
gJailHost, err = NewJailHost()
|
|
if err != nil {
|
|
fmt.Printf("Error initializing JailHost properties: %v\n", err)
|
|
os.Exit(1)
|
|
}
|
|
}
|
|
|
|
func initConfig() {
|
|
if gConfigFile == "" {
|
|
fmt.Println("No config file!")
|
|
os.Exit(1)
|
|
}
|
|
|
|
viper.SetConfigFile(gConfigFile)
|
|
|
|
if err := viper.ReadInConfig(); err != nil {
|
|
fmt.Printf("ERROR reading config file %s : %s\n", gConfigFile, err.Error())
|
|
os.Exit(1)
|
|
}
|
|
|
|
// Load default configs from datastores
|
|
err := ListDatastores(viper.GetStringSlice("datastore"), false)
|
|
if err != nil {
|
|
fmt.Printf("ERROR: error checking datastores: %v\n", err)
|
|
os.Exit(1)
|
|
}
|
|
|
|
// fmt.Println("Using config file:", viper.ConfigFileUsed())
|
|
// fmt.Printf("datastore in config : %s\n", viper.GetStringSlice("datastore"))
|
|
// fmt.Printf("datastore.0 in config : %s\n", viper.GetStringSlice("datastore.0"))
|
|
|
|
// Command line flags have priority on config file
|
|
if rootCmd.Flags().Lookup("sudo") != nil && false == rootCmd.Flags().Lookup("sudo").Changed {
|
|
gUseSudo = viper.GetBool("sudo")
|
|
}
|
|
if rootCmd.Flags().Lookup("timezone") != nil && false == rootCmd.Flags().Lookup("timezone").Changed {
|
|
gTimeZone = viper.GetString("timezone")
|
|
}
|
|
// If neither on cmdline nor config file, get from /var/db/zoneinfo
|
|
if len(gTimeZone) == 0 {
|
|
tz, err := ioutil.ReadFile("/var/db/zoneinfo")
|
|
if err != nil {
|
|
fmt.Println("Error reading /var/db/zoneinfo: %s\n", err.Error())
|
|
os.Exit(1)
|
|
}
|
|
gTimeZone = strings.Trim(string(tz), "\n")
|
|
}
|
|
if listCmd.Flags().Lookup("outcol") != nil && false == listCmd.Flags().Lookup("outcol").Changed {
|
|
gDisplayJColumns = viper.GetString("outcol")
|
|
}
|
|
if listCmd.Flags().Lookup("nolinesep") != nil && false == listCmd.Flags().Lookup("nolinesep").Changed {
|
|
gNoJailLineSep = viper.GetBool("nolinesep")
|
|
}
|
|
if listCmd.Flags().Lookup("filter") != nil && false == listCmd.Flags().Lookup("filter").Changed {
|
|
gFilterJails = viper.GetString("filter")
|
|
}
|
|
if listCmd.Flags().Lookup("sort") != nil && false == listCmd.Flags().Lookup("sort").Changed {
|
|
gSortJailFields = viper.GetString("sort")
|
|
}
|
|
if len(strings.Split(gSortJailFields, ",")) > 3 {
|
|
fmt.Printf("More than 3 sort criteria is not supported!\n")
|
|
os.Exit(1)
|
|
}
|
|
|
|
|
|
if gDebug {
|
|
log.SetLevel(log.DebugLevel)
|
|
log.Debugf("Debug mode enabled\n")
|
|
}
|
|
}
|
|
|
|
|
|
func Execute() {
|
|
if err := rootCmd.Execute(); err != nil {
|
|
fmt.Fprintln(os.Stderr, err)
|
|
os.Exit(1)
|
|
}
|
|
}
|