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rkt/rkt
stage1/init/common/path.go
IOMuxDir
func IOMuxDir(root string, appName types.ACName) string { return filepath.Join(common.Stage1RootfsPath(root), ioMuxDir, appName.String()) }
go
func IOMuxDir(root string, appName types.ACName) string { return filepath.Join(common.Stage1RootfsPath(root), ioMuxDir, appName.String()) }
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// IOMUxFilePath returns the path to the environment file for the given app name.
[ "IOMUxFilePath", "returns", "the", "path", "to", "the", "environment", "file", "for", "the", "given", "app", "name", "." ]
0c8765619cae3391a9ffa12c8dbd12ba7a475eb8
https://github.com/rkt/rkt/blob/0c8765619cae3391a9ffa12c8dbd12ba7a475eb8/stage1/init/common/path.go#L66-L68
train
rkt/rkt
stage1/init/common/path.go
ServiceWantPath
func ServiceWantPath(root string, appName types.ACName) string { return filepath.Join(common.Stage1RootfsPath(root), defaultWantsDir, ServiceUnitName(appName)) }
go
func ServiceWantPath(root string, appName types.ACName) string { return filepath.Join(common.Stage1RootfsPath(root), defaultWantsDir, ServiceUnitName(appName)) }
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// ServiceWantPath returns the systemd default.target want symlink path for the // given app name.
[ "ServiceWantPath", "returns", "the", "systemd", "default", ".", "target", "want", "symlink", "path", "for", "the", "given", "app", "name", "." ]
0c8765619cae3391a9ffa12c8dbd12ba7a475eb8
https://github.com/rkt/rkt/blob/0c8765619cae3391a9ffa12c8dbd12ba7a475eb8/stage1/init/common/path.go#L72-L74
train
rkt/rkt
stage1/init/common/path.go
InstantiatedPrepareAppUnitName
func InstantiatedPrepareAppUnitName(appName types.ACName) string { // Naming respecting escaping rules, see systemd.unit(5) and systemd-escape(1) escapedRoot := unit.UnitNamePathEscape(common.RelAppRootfsPath(appName)) return "prepare-app@-" + escapedRoot + ".service" }
go
func InstantiatedPrepareAppUnitName(appName types.ACName) string { // Naming respecting escaping rules, see systemd.unit(5) and systemd-escape(1) escapedRoot := unit.UnitNamePathEscape(common.RelAppRootfsPath(appName)) return "prepare-app@-" + escapedRoot + ".service" }
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// InstantiatedPrepareAppUnitName returns the systemd service unit name for prepare-app // instantiated for the given root.
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0c8765619cae3391a9ffa12c8dbd12ba7a475eb8
https://github.com/rkt/rkt/blob/0c8765619cae3391a9ffa12c8dbd12ba7a475eb8/stage1/init/common/path.go#L78-L82
train
rkt/rkt
stage1/init/common/path.go
SocketUnitPath
func SocketUnitPath(root string, appName types.ACName) string { return filepath.Join(common.Stage1RootfsPath(root), UnitsDir, SocketUnitName(appName)) }
go
func SocketUnitPath(root string, appName types.ACName) string { return filepath.Join(common.Stage1RootfsPath(root), UnitsDir, SocketUnitName(appName)) }
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// SocketUnitPath returns the path to the systemd socket file for the given app name.
[ "SocketUnitPath", "returns", "the", "path", "to", "the", "systemd", "socket", "file", "for", "the", "given", "app", "name", "." ]
0c8765619cae3391a9ffa12c8dbd12ba7a475eb8
https://github.com/rkt/rkt/blob/0c8765619cae3391a9ffa12c8dbd12ba7a475eb8/stage1/init/common/path.go#L90-L92
train
rkt/rkt
stage1/init/common/path.go
SocketWantPath
func SocketWantPath(root string, appName types.ACName) string { return filepath.Join(common.Stage1RootfsPath(root), socketsWantsDir, SocketUnitName(appName)) }
go
func SocketWantPath(root string, appName types.ACName) string { return filepath.Join(common.Stage1RootfsPath(root), socketsWantsDir, SocketUnitName(appName)) }
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// SocketWantPath returns the systemd sockets.target.wants symlink path for the // given app name.
[ "SocketWantPath", "returns", "the", "systemd", "sockets", ".", "target", ".", "wants", "symlink", "path", "for", "the", "given", "app", "name", "." ]
0c8765619cae3391a9ffa12c8dbd12ba7a475eb8
https://github.com/rkt/rkt/blob/0c8765619cae3391a9ffa12c8dbd12ba7a475eb8/stage1/init/common/path.go#L96-L98
train
rkt/rkt
stage1/init/common/path.go
TypedUnitPath
func TypedUnitPath(root string, unitName string, unitType string) string { return filepath.Join(common.Stage1RootfsPath(root), UnitsDir, unitName+"."+unitType) }
go
func TypedUnitPath(root string, unitName string, unitType string) string { return filepath.Join(common.Stage1RootfsPath(root), UnitsDir, unitName+"."+unitType) }
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// TypedUnitPath returns the path to a custom-typed unit file
[ "TypedUnitPath", "returns", "the", "path", "to", "a", "custom", "-", "typed", "unit", "file" ]
0c8765619cae3391a9ffa12c8dbd12ba7a475eb8
https://github.com/rkt/rkt/blob/0c8765619cae3391a9ffa12c8dbd12ba7a475eb8/stage1/init/common/path.go#L101-L103
train
rkt/rkt
pkg/distribution/aciarchive.go
NewACIArchive
func NewACIArchive(u *url.URL) (Distribution, error) { c, err := parseCIMD(u) if err != nil { return nil, fmt.Errorf("cannot parse URI: %q: %v", u.String(), err) } if c.Type != TypeACIArchive { return nil, fmt.Errorf("illegal ACI archive distribution type: %q", c.Type) } // This should be a valid URL data, err := url.QueryUnescape(c.Data) if err != nil { return nil, errwrap.Wrap(fmt.Errorf("error unescaping url %q", c.Data), err) } aciu, err := url.Parse(data) if err != nil { return nil, errwrap.Wrap(fmt.Errorf("error parsing url %q", c.Data), err) } // save the URI as sorted to make it ready for comparison purell.NormalizeURL(u, purell.FlagSortQuery) str := u.String() if path := aciu.String(); filepath.Ext(path) == schema.ACIExtension { str = path } return &ACIArchive{ cimdURL: u, transportURL: aciu, str: str, }, nil }
go
func NewACIArchive(u *url.URL) (Distribution, error) { c, err := parseCIMD(u) if err != nil { return nil, fmt.Errorf("cannot parse URI: %q: %v", u.String(), err) } if c.Type != TypeACIArchive { return nil, fmt.Errorf("illegal ACI archive distribution type: %q", c.Type) } // This should be a valid URL data, err := url.QueryUnescape(c.Data) if err != nil { return nil, errwrap.Wrap(fmt.Errorf("error unescaping url %q", c.Data), err) } aciu, err := url.Parse(data) if err != nil { return nil, errwrap.Wrap(fmt.Errorf("error parsing url %q", c.Data), err) } // save the URI as sorted to make it ready for comparison purell.NormalizeURL(u, purell.FlagSortQuery) str := u.String() if path := aciu.String(); filepath.Ext(path) == schema.ACIExtension { str = path } return &ACIArchive{ cimdURL: u, transportURL: aciu, str: str, }, nil }
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// NewACIArchive creates a new aci-archive distribution from the provided distribution uri.
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0c8765619cae3391a9ffa12c8dbd12ba7a475eb8
https://github.com/rkt/rkt/blob/0c8765619cae3391a9ffa12c8dbd12ba7a475eb8/pkg/distribution/aciarchive.go#L54-L86
train
rkt/rkt
pkg/distribution/aciarchive.go
TransportURL
func (a *ACIArchive) TransportURL() *url.URL { // Create a copy of the transport URL tu, err := url.Parse(a.transportURL.String()) if err != nil { panic(fmt.Errorf("invalid transport URL: %v", err)) } return tu }
go
func (a *ACIArchive) TransportURL() *url.URL { // Create a copy of the transport URL tu, err := url.Parse(a.transportURL.String()) if err != nil { panic(fmt.Errorf("invalid transport URL: %v", err)) } return tu }
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// TransportURL returns a copy of the transport URL.
[ "TransportURL", "returns", "a", "copy", "of", "the", "transport", "URL", "." ]
0c8765619cae3391a9ffa12c8dbd12ba7a475eb8
https://github.com/rkt/rkt/blob/0c8765619cae3391a9ffa12c8dbd12ba7a475eb8/pkg/distribution/aciarchive.go#L122-L130
train
rkt/rkt
stage0/gc.go
MountGC
func MountGC(path, uuid string) error { err := common.ChrootPrivateUnmount(path, log, debug) if err != nil { return errwrap.Wrap(fmt.Errorf("error cleaning mounts for pod %s", uuid), err) } return nil }
go
func MountGC(path, uuid string) error { err := common.ChrootPrivateUnmount(path, log, debug) if err != nil { return errwrap.Wrap(fmt.Errorf("error cleaning mounts for pod %s", uuid), err) } return nil }
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// MountGC removes mounts from pods that couldn't be GCed cleanly.
[ "MountGC", "removes", "mounts", "from", "pods", "that", "couldn", "t", "be", "GCed", "cleanly", "." ]
0c8765619cae3391a9ffa12c8dbd12ba7a475eb8
https://github.com/rkt/rkt/blob/0c8765619cae3391a9ffa12c8dbd12ba7a475eb8/stage0/gc.go#L71-L77
train
rkt/rkt
pkg/pod/uuid.go
matchUUID
func matchUUID(dataDir, uuid string) ([]string, error) { if uuid == "" { return nil, types.ErrNoEmptyUUID } ls, err := listPods(dataDir, IncludeMostDirs) if err != nil { return nil, err } var matches []string for _, p := range ls { if strings.HasPrefix(p, uuid) { matches = append(matches, p) } } return matches, nil }
go
func matchUUID(dataDir, uuid string) ([]string, error) { if uuid == "" { return nil, types.ErrNoEmptyUUID } ls, err := listPods(dataDir, IncludeMostDirs) if err != nil { return nil, err } var matches []string for _, p := range ls { if strings.HasPrefix(p, uuid) { matches = append(matches, p) } } return matches, nil }
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// matchUUID attempts to match the uuid specified as uuid against all pods present. // An array of matches is returned, which may be empty when nothing matches.
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0c8765619cae3391a9ffa12c8dbd12ba7a475eb8
https://github.com/rkt/rkt/blob/0c8765619cae3391a9ffa12c8dbd12ba7a475eb8/pkg/pod/uuid.go#L30-L48
train
rkt/rkt
pkg/pod/uuid.go
resolveUUID
func resolveUUID(dataDir, uuid string) (*types.UUID, error) { uuid = strings.ToLower(uuid) m, err := matchUUID(dataDir, uuid) if err != nil { return nil, err } if len(m) == 0 { return nil, fmt.Errorf("no matches found for %q", uuid) } if len(m) > 1 { return nil, fmt.Errorf("ambiguous uuid, %d matches", len(m)) } u, err := types.NewUUID(m[0]) if err != nil { return nil, errwrap.Wrap(errors.New("invalid UUID"), err) } return u, nil }
go
func resolveUUID(dataDir, uuid string) (*types.UUID, error) { uuid = strings.ToLower(uuid) m, err := matchUUID(dataDir, uuid) if err != nil { return nil, err } if len(m) == 0 { return nil, fmt.Errorf("no matches found for %q", uuid) } if len(m) > 1 { return nil, fmt.Errorf("ambiguous uuid, %d matches", len(m)) } u, err := types.NewUUID(m[0]) if err != nil { return nil, errwrap.Wrap(errors.New("invalid UUID"), err) } return u, nil }
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// resolveUUID attempts to resolve the uuid specified as uuid against all pods present. // An unambiguously matched uuid or nil is returned.
[ "resolveUUID", "attempts", "to", "resolve", "the", "uuid", "specified", "as", "uuid", "against", "all", "pods", "present", ".", "An", "unambiguously", "matched", "uuid", "or", "nil", "is", "returned", "." ]
0c8765619cae3391a9ffa12c8dbd12ba7a475eb8
https://github.com/rkt/rkt/blob/0c8765619cae3391a9ffa12c8dbd12ba7a475eb8/pkg/pod/uuid.go#L52-L73
train
rkt/rkt
pkg/pod/uuid.go
ReadUUIDFromFile
func ReadUUIDFromFile(path string) (string, error) { uuid, err := ioutil.ReadFile(path) if err != nil { return "", err } return string(bytes.TrimSpace(uuid)), nil }
go
func ReadUUIDFromFile(path string) (string, error) { uuid, err := ioutil.ReadFile(path) if err != nil { return "", err } return string(bytes.TrimSpace(uuid)), nil }
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// ReadUUIDFromFile reads the uuid string from the given path.
[ "ReadUUIDFromFile", "reads", "the", "uuid", "string", "from", "the", "given", "path", "." ]
0c8765619cae3391a9ffa12c8dbd12ba7a475eb8
https://github.com/rkt/rkt/blob/0c8765619cae3391a9ffa12c8dbd12ba7a475eb8/pkg/pod/uuid.go#L76-L82
train
rkt/rkt
pkg/pod/uuid.go
WriteUUIDToFile
func WriteUUIDToFile(uuid *types.UUID, path string) error { return ioutil.WriteFile(path, []byte(uuid.String()), 0644) }
go
func WriteUUIDToFile(uuid *types.UUID, path string) error { return ioutil.WriteFile(path, []byte(uuid.String()), 0644) }
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// WriteUUIDToFile writes the uuid string to the given path.
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0c8765619cae3391a9ffa12c8dbd12ba7a475eb8
https://github.com/rkt/rkt/blob/0c8765619cae3391a9ffa12c8dbd12ba7a475eb8/pkg/pod/uuid.go#L85-L87
train
rkt/rkt
networking/networking.go
Setup
func Setup(podRoot string, podID types.UUID, fps []commonnet.ForwardedPort, netList common.NetList, localConfig, flavor string, noDNS, debug bool) (*Networking, error) { stderr = log.New(os.Stderr, "networking", debug) debuglog = debug if flavor == "kvm" { return kvmSetup(podRoot, podID, fps, netList, localConfig, noDNS) } // TODO(jonboulle): currently podRoot is _always_ ".", and behaviour in other // circumstances is untested. This should be cleaned up. n := Networking{ podEnv: podEnv{ podRoot: podRoot, podID: podID, netsLoadList: netList, localConfig: localConfig, }, } err := n.mountNetnsDirectory() if err != nil { return nil, err } // Create the network namespace (and save its name in a file) err = n.podNSCreate() if err != nil { return nil, err } n.nets, err = n.loadNets() if err != nil { return nil, errwrap.Wrap(errors.New("error loading network definitions"), err) } if err := n.setupNets(n.nets, noDNS); err != nil { return nil, err } if len(fps) > 0 { if err = n.enableDefaultLocalnetRouting(); err != nil { return nil, err } podIP, err := n.GetForwardableNetPodIP() if err != nil { return nil, err } if err := n.setupForwarding(); err != nil { n.teardownForwarding() return nil, err } if err := n.forwardPorts(fps, podIP); err != nil { n.teardownForwarding() return nil, err } } // Switch to the podNS if err := n.podNS.Set(); err != nil { return nil, err } if err = loUp(); err != nil { return nil, err } return &n, nil }
go
func Setup(podRoot string, podID types.UUID, fps []commonnet.ForwardedPort, netList common.NetList, localConfig, flavor string, noDNS, debug bool) (*Networking, error) { stderr = log.New(os.Stderr, "networking", debug) debuglog = debug if flavor == "kvm" { return kvmSetup(podRoot, podID, fps, netList, localConfig, noDNS) } // TODO(jonboulle): currently podRoot is _always_ ".", and behaviour in other // circumstances is untested. This should be cleaned up. n := Networking{ podEnv: podEnv{ podRoot: podRoot, podID: podID, netsLoadList: netList, localConfig: localConfig, }, } err := n.mountNetnsDirectory() if err != nil { return nil, err } // Create the network namespace (and save its name in a file) err = n.podNSCreate() if err != nil { return nil, err } n.nets, err = n.loadNets() if err != nil { return nil, errwrap.Wrap(errors.New("error loading network definitions"), err) } if err := n.setupNets(n.nets, noDNS); err != nil { return nil, err } if len(fps) > 0 { if err = n.enableDefaultLocalnetRouting(); err != nil { return nil, err } podIP, err := n.GetForwardableNetPodIP() if err != nil { return nil, err } if err := n.setupForwarding(); err != nil { n.teardownForwarding() return nil, err } if err := n.forwardPorts(fps, podIP); err != nil { n.teardownForwarding() return nil, err } } // Switch to the podNS if err := n.podNS.Set(); err != nil { return nil, err } if err = loUp(); err != nil { return nil, err } return &n, nil }
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// Setup creates a new networking namespace and executes network plugins to // set up networking. It returns in the new pod namespace
[ "Setup", "creates", "a", "new", "networking", "namespace", "and", "executes", "network", "plugins", "to", "set", "up", "networking", ".", "It", "returns", "in", "the", "new", "pod", "namespace" ]
0c8765619cae3391a9ffa12c8dbd12ba7a475eb8
https://github.com/rkt/rkt/blob/0c8765619cae3391a9ffa12c8dbd12ba7a475eb8/networking/networking.go#L67-L135
train
rkt/rkt
networking/networking.go
enableDefaultLocalnetRouting
func (n *Networking) enableDefaultLocalnetRouting() error { routeLocalnetFormat := "" defaultHostIP, err := n.GetForwardableNetHostIP() if err != nil { return err } defaultHostIPstring := defaultHostIP.String() switch { case strings.Contains(defaultHostIPstring, "."): routeLocalnetFormat = "/proc/sys/net/ipv4/conf/%s/route_localnet" case strings.Contains(defaultHostIPstring, ":"): return fmt.Errorf("unexpected IPv6 Address returned for default host interface: %q", defaultHostIPstring) default: return fmt.Errorf("unknown type for default Host IP: %q", defaultHostIPstring) } hostIfaces, err := n.GetIfacesByIP(defaultHostIP) if err != nil { return err } for _, hostIface := range hostIfaces { routeLocalnetPath := fmt.Sprintf(routeLocalnetFormat, hostIface.Name) routeLocalnetValue, err := ioutil.ReadFile(routeLocalnetPath) if err != nil { return err } if strings.TrimSpace(string(routeLocalnetValue)) != "1" { routeLocalnetFile, err := os.OpenFile(routeLocalnetPath, os.O_WRONLY, 0) if err != nil { return err } defer routeLocalnetFile.Close() if _, err = io.WriteString(routeLocalnetFile, "1"); err != nil { return err } } } return nil }
go
func (n *Networking) enableDefaultLocalnetRouting() error { routeLocalnetFormat := "" defaultHostIP, err := n.GetForwardableNetHostIP() if err != nil { return err } defaultHostIPstring := defaultHostIP.String() switch { case strings.Contains(defaultHostIPstring, "."): routeLocalnetFormat = "/proc/sys/net/ipv4/conf/%s/route_localnet" case strings.Contains(defaultHostIPstring, ":"): return fmt.Errorf("unexpected IPv6 Address returned for default host interface: %q", defaultHostIPstring) default: return fmt.Errorf("unknown type for default Host IP: %q", defaultHostIPstring) } hostIfaces, err := n.GetIfacesByIP(defaultHostIP) if err != nil { return err } for _, hostIface := range hostIfaces { routeLocalnetPath := fmt.Sprintf(routeLocalnetFormat, hostIface.Name) routeLocalnetValue, err := ioutil.ReadFile(routeLocalnetPath) if err != nil { return err } if strings.TrimSpace(string(routeLocalnetValue)) != "1" { routeLocalnetFile, err := os.OpenFile(routeLocalnetPath, os.O_WRONLY, 0) if err != nil { return err } defer routeLocalnetFile.Close() if _, err = io.WriteString(routeLocalnetFile, "1"); err != nil { return err } } } return nil }
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// enableDefaultLocalnetRouting enables the route_localnet attribute on the supposedly default network interface. // This allows setting up loopback NAT so the host can access the pod's forwarded ports on the localhost address.
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0c8765619cae3391a9ffa12c8dbd12ba7a475eb8
https://github.com/rkt/rkt/blob/0c8765619cae3391a9ffa12c8dbd12ba7a475eb8/networking/networking.go#L139-L182
train
rkt/rkt
networking/networking.go
Load
func Load(podRoot string, podID *types.UUID, localConfig string) (*Networking, error) { // the current directory is pod root pdirfd, err := syscall.Open(podRoot, syscall.O_RDONLY|syscall.O_DIRECTORY, 0) if err != nil { return nil, errwrap.Wrap(fmt.Errorf("failed to open pod root directory (%v)", podRoot), err) } defer syscall.Close(pdirfd) nis, err := netinfo.LoadAt(pdirfd) if err != nil { return nil, err } var nets []activeNet for _, ni := range nis { n, err := loadNet(ni.ConfPath) if err != nil { if !os.IsNotExist(err) { stderr.PrintE(fmt.Sprintf("error loading %q; ignoring", ni.ConfPath), err) } continue } // make a copy of ni to make it a unique object as it's saved via ptr rti := ni n.runtime = &rti nets = append(nets, *n) } p := podEnv{ podRoot: podRoot, podID: *podID, localConfig: localConfig, } err = p.podNSLoad() if err != nil { return nil, err } return &Networking{ podEnv: p, nets: nets, }, nil }
go
func Load(podRoot string, podID *types.UUID, localConfig string) (*Networking, error) { // the current directory is pod root pdirfd, err := syscall.Open(podRoot, syscall.O_RDONLY|syscall.O_DIRECTORY, 0) if err != nil { return nil, errwrap.Wrap(fmt.Errorf("failed to open pod root directory (%v)", podRoot), err) } defer syscall.Close(pdirfd) nis, err := netinfo.LoadAt(pdirfd) if err != nil { return nil, err } var nets []activeNet for _, ni := range nis { n, err := loadNet(ni.ConfPath) if err != nil { if !os.IsNotExist(err) { stderr.PrintE(fmt.Sprintf("error loading %q; ignoring", ni.ConfPath), err) } continue } // make a copy of ni to make it a unique object as it's saved via ptr rti := ni n.runtime = &rti nets = append(nets, *n) } p := podEnv{ podRoot: podRoot, podID: *podID, localConfig: localConfig, } err = p.podNSLoad() if err != nil { return nil, err } return &Networking{ podEnv: p, nets: nets, }, nil }
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// Load creates the Networking object from saved state. // Assumes the current netns is that of the host.
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0c8765619cae3391a9ffa12c8dbd12ba7a475eb8
https://github.com/rkt/rkt/blob/0c8765619cae3391a9ffa12c8dbd12ba7a475eb8/networking/networking.go#L186-L230
train
rkt/rkt
networking/networking.go
GetIfacesByIP
func (n *Networking) GetIfacesByIP(ifaceIP net.IP) ([]net.Interface, error) { ifaces, err := net.Interfaces() if err != nil { return nil, err } searchAddr := strings.Split(ifaceIP.String(), "/")[0] resultInterfaces := make([]net.Interface, 0) for _, iface := range ifaces { if iface.Flags&net.FlagLoopback != 0 { continue } addrs, err := iface.Addrs() if err != nil { return nil, errwrap.Wrap(fmt.Errorf("cannot get addresses for interface %v", iface.Name), err) } for _, addr := range addrs { currentAddr := strings.Split(addr.String(), "/")[0] if searchAddr == currentAddr { resultInterfaces = append(resultInterfaces, iface) break } } } if len(resultInterfaces) == 0 { return nil, fmt.Errorf("no interface found with IP %q", ifaceIP) } return resultInterfaces, nil }
go
func (n *Networking) GetIfacesByIP(ifaceIP net.IP) ([]net.Interface, error) { ifaces, err := net.Interfaces() if err != nil { return nil, err } searchAddr := strings.Split(ifaceIP.String(), "/")[0] resultInterfaces := make([]net.Interface, 0) for _, iface := range ifaces { if iface.Flags&net.FlagLoopback != 0 { continue } addrs, err := iface.Addrs() if err != nil { return nil, errwrap.Wrap(fmt.Errorf("cannot get addresses for interface %v", iface.Name), err) } for _, addr := range addrs { currentAddr := strings.Split(addr.String(), "/")[0] if searchAddr == currentAddr { resultInterfaces = append(resultInterfaces, iface) break } } } if len(resultInterfaces) == 0 { return nil, fmt.Errorf("no interface found with IP %q", ifaceIP) } return resultInterfaces, nil }
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// GetIfacesByIP searches for and returns the interfaces with the given IP // Disregards the subnet mask since not every net.IP object contains // On success it will return the list of found interfaces
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0c8765619cae3391a9ffa12c8dbd12ba7a475eb8
https://github.com/rkt/rkt/blob/0c8765619cae3391a9ffa12c8dbd12ba7a475eb8/networking/networking.go#L235-L268
train
rkt/rkt
networking/networking.go
Teardown
func (n *Networking) Teardown(flavor string, debug bool) { stderr = log.New(os.Stderr, "networking", debug) debuglog = debug // Teardown everything in reverse order of setup. // This should be idempotent -- be tolerant of missing stuff if flavor == "kvm" { n.kvmTeardown() return } if err := n.teardownForwarding(); err != nil { stderr.PrintE("error removing forwarded ports", err) } err := n.podNSLoad() if err != nil { stderr.PrintE("error loading podNS", err) } n.teardownNets(n.nets) n.podNSDestroy() }
go
func (n *Networking) Teardown(flavor string, debug bool) { stderr = log.New(os.Stderr, "networking", debug) debuglog = debug // Teardown everything in reverse order of setup. // This should be idempotent -- be tolerant of missing stuff if flavor == "kvm" { n.kvmTeardown() return } if err := n.teardownForwarding(); err != nil { stderr.PrintE("error removing forwarded ports", err) } err := n.podNSLoad() if err != nil { stderr.PrintE("error loading podNS", err) } n.teardownNets(n.nets) n.podNSDestroy() }
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// Teardown cleans up a produced Networking object.
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0c8765619cae3391a9ffa12c8dbd12ba7a475eb8
https://github.com/rkt/rkt/blob/0c8765619cae3391a9ffa12c8dbd12ba7a475eb8/networking/networking.go#L271-L295
train
rkt/rkt
networking/networking.go
Save
func (e *Networking) Save() error { if e.podNS != nil { if err := e.podNSPathSave(); err != nil { return err } } var nis []netinfo.NetInfo for _, n := range e.nets { nis = append(nis, *n.runtime) } return netinfo.Save(e.podRoot, nis) }
go
func (e *Networking) Save() error { if e.podNS != nil { if err := e.podNSPathSave(); err != nil { return err } } var nis []netinfo.NetInfo for _, n := range e.nets { nis = append(nis, *n.runtime) } return netinfo.Save(e.podRoot, nis) }
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// Save writes out the info about active nets // for "rkt list" and friends to display
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0c8765619cae3391a9ffa12c8dbd12ba7a475eb8
https://github.com/rkt/rkt/blob/0c8765619cae3391a9ffa12c8dbd12ba7a475eb8/networking/networking.go#L299-L313
train
rkt/rkt
networking/networking.go
CleanUpGarbage
func CleanUpGarbage(podRoot string, podID *types.UUID) error { p := podEnv{ podRoot: podRoot, podID: *podID, } err := p.podNSLoad() if err != nil { return err } return p.podNSDestroy() }
go
func CleanUpGarbage(podRoot string, podID *types.UUID) error { p := podEnv{ podRoot: podRoot, podID: *podID, } err := p.podNSLoad() if err != nil { return err } return p.podNSDestroy() }
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// CleanUpGarbage can be called when Load fails, but there may still // be some garbage lying around. Right now, this deletes the namespace.
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0c8765619cae3391a9ffa12c8dbd12ba7a475eb8
https://github.com/rkt/rkt/blob/0c8765619cae3391a9ffa12c8dbd12ba7a475eb8/networking/networking.go#L317-L328
train
rkt/rkt
rkt/image/asc.go
Get
func (a *asc) Get() (readSeekCloser, error) { if a.Fetcher != nil { return a.Fetcher.Get(a.Location) } return NopReadSeekCloser(nil), nil }
go
func (a *asc) Get() (readSeekCloser, error) { if a.Fetcher != nil { return a.Fetcher.Get(a.Location) } return NopReadSeekCloser(nil), nil }
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// Get fetches a signature file. It returns nil and no error if there // was no fetcher set.
[ "Get", "fetches", "a", "signature", "file", ".", "It", "returns", "nil", "and", "no", "error", "if", "there", "was", "no", "fetcher", "set", "." ]
0c8765619cae3391a9ffa12c8dbd12ba7a475eb8
https://github.com/rkt/rkt/blob/0c8765619cae3391a9ffa12c8dbd12ba7a475eb8/rkt/image/asc.go#L89-L94
train
rkt/rkt
rkt/image/finder.go
FindImages
func (f *Finder) FindImages(al *apps.Apps) error { return al.Walk(func(app *apps.App) error { h, err := f.FindImage(app.Image, app.Asc) if err != nil { return err } app.ImageID = *h return nil }) }
go
func (f *Finder) FindImages(al *apps.Apps) error { return al.Walk(func(app *apps.App) error { h, err := f.FindImage(app.Image, app.Asc) if err != nil { return err } app.ImageID = *h return nil }) }
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// FindImages uses FindImage to attain a list of image hashes
[ "FindImages", "uses", "FindImage", "to", "attain", "a", "list", "of", "image", "hashes" ]
0c8765619cae3391a9ffa12c8dbd12ba7a475eb8
https://github.com/rkt/rkt/blob/0c8765619cae3391a9ffa12c8dbd12ba7a475eb8/rkt/image/finder.go#L31-L40
train
rkt/rkt
rkt/image/finder.go
FindImage
func (f *Finder) FindImage(img string, asc string) (*types.Hash, error) { ensureLogger(f.Debug) // Check if it's an hash if _, err := types.NewHash(img); err == nil { h, err := f.getHashFromStore(img) if err != nil { return nil, err } return h, nil } d, err := DistFromImageString(img) if err != nil { return nil, err } // urls, names, paths have to be fetched, potentially remotely ft := (*Fetcher)(f) h, err := ft.FetchImage(d, img, asc) if err != nil { return nil, err } return h, nil }
go
func (f *Finder) FindImage(img string, asc string) (*types.Hash, error) { ensureLogger(f.Debug) // Check if it's an hash if _, err := types.NewHash(img); err == nil { h, err := f.getHashFromStore(img) if err != nil { return nil, err } return h, nil } d, err := DistFromImageString(img) if err != nil { return nil, err } // urls, names, paths have to be fetched, potentially remotely ft := (*Fetcher)(f) h, err := ft.FetchImage(d, img, asc) if err != nil { return nil, err } return h, nil }
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// FindImage tries to get a hash of a passed image, ideally from // store. Otherwise this might involve fetching it from remote with // the Fetcher.
[ "FindImage", "tries", "to", "get", "a", "hash", "of", "a", "passed", "image", "ideally", "from", "store", ".", "Otherwise", "this", "might", "involve", "fetching", "it", "from", "remote", "with", "the", "Fetcher", "." ]
0c8765619cae3391a9ffa12c8dbd12ba7a475eb8
https://github.com/rkt/rkt/blob/0c8765619cae3391a9ffa12c8dbd12ba7a475eb8/rkt/image/finder.go#L45-L69
train
rkt/rkt
stage1/common/ssh/ssh.go
fileAccessible
func fileAccessible(path string) bool { if info, err := os.Stat(path); err == nil { return info.Mode().IsRegular() } return false }
go
func fileAccessible(path string) bool { if info, err := os.Stat(path); err == nil { return info.Mode().IsRegular() } return false }
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// fileAccessible checks if the given path exists and is a regular file
[ "fileAccessible", "checks", "if", "the", "given", "path", "exists", "and", "is", "a", "regular", "file" ]
0c8765619cae3391a9ffa12c8dbd12ba7a475eb8
https://github.com/rkt/rkt/blob/0c8765619cae3391a9ffa12c8dbd12ba7a475eb8/stage1/common/ssh/ssh.go#L44-L49
train
rkt/rkt
stage1/common/ssh/ssh.go
generateKeyPair
func generateKeyPair(private string) error { out, err := exec.Command( "ssh-keygen", "-q", // silence "-t", "dsa", // type "-b", "1024", // length in bits "-f", private, // output file "-N", "", // no passphrase ).Output() if err != nil { // out is in form of bytes buffer and we have to turn it into slice ending on first \0 occurrence return fmt.Errorf("error in keygen time. ret_val: %v, output: %v", err, string(out[:])) } return nil }
go
func generateKeyPair(private string) error { out, err := exec.Command( "ssh-keygen", "-q", // silence "-t", "dsa", // type "-b", "1024", // length in bits "-f", private, // output file "-N", "", // no passphrase ).Output() if err != nil { // out is in form of bytes buffer and we have to turn it into slice ending on first \0 occurrence return fmt.Errorf("error in keygen time. ret_val: %v, output: %v", err, string(out[:])) } return nil }
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// generateKeyPair calls ssh-keygen with private key location for key generation purpose
[ "generateKeyPair", "calls", "ssh", "-", "keygen", "with", "private", "key", "location", "for", "key", "generation", "purpose" ]
0c8765619cae3391a9ffa12c8dbd12ba7a475eb8
https://github.com/rkt/rkt/blob/0c8765619cae3391a9ffa12c8dbd12ba7a475eb8/stage1/common/ssh/ssh.go#L60-L74
train
rkt/rkt
pkg/mountinfo/types.go
NeedsRemountPrivate
func (m *Mount) NeedsRemountPrivate() bool { for _, key := range []string{ "shared", "master", } { if _, needsRemount := m.Opts[key]; needsRemount { return true } } return false }
go
func (m *Mount) NeedsRemountPrivate() bool { for _, key := range []string{ "shared", "master", } { if _, needsRemount := m.Opts[key]; needsRemount { return true } } return false }
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// NeedsRemountPrivate checks if this mountPoint needs to be remounted // as private, in order for children to be properly unmounted without // leaking to parents.
[ "NeedsRemountPrivate", "checks", "if", "this", "mountPoint", "needs", "to", "be", "remounted", "as", "private", "in", "order", "for", "children", "to", "be", "properly", "unmounted", "without", "leaking", "to", "parents", "." ]
0c8765619cae3391a9ffa12c8dbd12ba7a475eb8
https://github.com/rkt/rkt/blob/0c8765619cae3391a9ffa12c8dbd12ba7a475eb8/pkg/mountinfo/types.go#L34-L44
train
rkt/rkt
pkg/mountinfo/types.go
Filter
func (ms Mounts) Filter(f FilterFunc) Mounts { filtered := make([]*Mount, 0, len(ms)) for _, m := range ms { if f(m) { filtered = append(filtered, m) } } return Mounts(filtered) }
go
func (ms Mounts) Filter(f FilterFunc) Mounts { filtered := make([]*Mount, 0, len(ms)) for _, m := range ms { if f(m) { filtered = append(filtered, m) } } return Mounts(filtered) }
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// Filter returns a filtered copy of Mounts
[ "Filter", "returns", "a", "filtered", "copy", "of", "Mounts" ]
0c8765619cae3391a9ffa12c8dbd12ba7a475eb8
https://github.com/rkt/rkt/blob/0c8765619cae3391a9ffa12c8dbd12ba7a475eb8/pkg/mountinfo/types.go#L51-L61
train
rkt/rkt
pkg/mountinfo/types.go
mountDepth
func (ms Mounts) mountDepth(i int) int { ancestorCount := 0 current := ms[i] for found := true; found; { found = false for _, mnt := range ms { if mnt.ID == current.Parent { ancestorCount++ current = mnt found = true break } } } return ancestorCount }
go
func (ms Mounts) mountDepth(i int) int { ancestorCount := 0 current := ms[i] for found := true; found; { found = false for _, mnt := range ms { if mnt.ID == current.Parent { ancestorCount++ current = mnt found = true break } } } return ancestorCount }
[ "func", "(", "ms", "Mounts", ")", "mountDepth", "(", "i", "int", ")", "int", "{", "ancestorCount", ":=", "0", "\n", "current", ":=", "ms", "[", "i", "]", "\n", "for", "found", ":=", "true", ";", "found", ";", "{", "found", "=", "false", "\n", "for", "_", ",", "mnt", ":=", "range", "ms", "{", "if", "mnt", ".", "ID", "==", "current", ".", "Parent", "{", "ancestorCount", "++", "\n", "current", "=", "mnt", "\n", "found", "=", "true", "\n", "break", "\n", "}", "\n", "}", "\n", "}", "\n", "return", "ancestorCount", "\n", "}" ]
// mountDepth determines and returns the number of ancestors of the mount at index i
[ "mountDepth", "determines", "and", "returns", "the", "number", "of", "ancestors", "of", "the", "mount", "at", "index", "i" ]
0c8765619cae3391a9ffa12c8dbd12ba7a475eb8
https://github.com/rkt/rkt/blob/0c8765619cae3391a9ffa12c8dbd12ba7a475eb8/pkg/mountinfo/types.go#L72-L87
train
rkt/rkt
pkg/flag/bitflags.go
NewBitFlags
func NewBitFlags(permissibleOptions []string, defaultOptions string, flagMap map[string]int) (*BitFlags, error) { ol, err := NewOptionList(permissibleOptions, defaultOptions) if err != nil { return nil, err } bf := &BitFlags{ OptionList: ol, FlagMap: flagMap, } bf.typeName = "BitFlags" if err := bf.Set(defaultOptions); err != nil { return nil, errwrap.Wrap(errors.New("problem setting defaults"), err) } return bf, nil }
go
func NewBitFlags(permissibleOptions []string, defaultOptions string, flagMap map[string]int) (*BitFlags, error) { ol, err := NewOptionList(permissibleOptions, defaultOptions) if err != nil { return nil, err } bf := &BitFlags{ OptionList: ol, FlagMap: flagMap, } bf.typeName = "BitFlags" if err := bf.Set(defaultOptions); err != nil { return nil, errwrap.Wrap(errors.New("problem setting defaults"), err) } return bf, nil }
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// NewBitFlags initializes a simple bitflag version of the OptionList Type. // flagMap is the mapping from option names to the integer value
[ "NewBitFlags", "initializes", "a", "simple", "bitflag", "version", "of", "the", "OptionList", "Type", ".", "flagMap", "is", "the", "mapping", "from", "option", "names", "to", "the", "integer", "value" ]
0c8765619cae3391a9ffa12c8dbd12ba7a475eb8
https://github.com/rkt/rkt/blob/0c8765619cae3391a9ffa12c8dbd12ba7a475eb8/pkg/flag/bitflags.go#L33-L50
train
rkt/rkt
tools/common/filelist/filelist.go
parseList
func parseList(scanner *bufio.Scanner, count int) ([]string, error) { got := 0 items := make([]string, 0, count) for { if !scanner.Scan() { if err := scanner.Err(); err != nil { return nil, err } return nil, fmt.Errorf("expected either an empty line or a line with an item, unexpected EOF?") } line := scanner.Text() if line == "" { if got < count { return nil, fmt.Errorf("too few items (declared %d, got %d)", count, got) } break } got++ if got > count { return nil, fmt.Errorf("too many items (declared %d)", count) } items = append(items, line) } return items, nil }
go
func parseList(scanner *bufio.Scanner, count int) ([]string, error) { got := 0 items := make([]string, 0, count) for { if !scanner.Scan() { if err := scanner.Err(); err != nil { return nil, err } return nil, fmt.Errorf("expected either an empty line or a line with an item, unexpected EOF?") } line := scanner.Text() if line == "" { if got < count { return nil, fmt.Errorf("too few items (declared %d, got %d)", count, got) } break } got++ if got > count { return nil, fmt.Errorf("too many items (declared %d)", count) } items = append(items, line) } return items, nil }
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// parseList parses the list part of a block. It makes sure that there // is an exactly expected count of items.
[ "parseList", "parses", "the", "list", "part", "of", "a", "block", ".", "It", "makes", "sure", "that", "there", "is", "an", "exactly", "expected", "count", "of", "items", "." ]
0c8765619cae3391a9ffa12c8dbd12ba7a475eb8
https://github.com/rkt/rkt/blob/0c8765619cae3391a9ffa12c8dbd12ba7a475eb8/tools/common/filelist/filelist.go#L89-L113
train
rkt/rkt
tools/common/filelist/filelist.go
GenerateFilelist
func (list *Lists) GenerateFilelist(out io.Writer) error { w := bufio.NewWriter(out) for _, pair := range list.getPairs() { dLen := len(*pair.data) toWrite := []string{ pair.kind, "\n(", strconv.Itoa(dLen), ")\n", } if dLen > 0 { toWrite = append(toWrite, strings.Join(*pair.data, "\n"), "\n") } toWrite = append(toWrite, "\n") for _, str := range toWrite { if _, err := w.WriteString(str); err != nil { return err } } } w.Flush() return nil }
go
func (list *Lists) GenerateFilelist(out io.Writer) error { w := bufio.NewWriter(out) for _, pair := range list.getPairs() { dLen := len(*pair.data) toWrite := []string{ pair.kind, "\n(", strconv.Itoa(dLen), ")\n", } if dLen > 0 { toWrite = append(toWrite, strings.Join(*pair.data, "\n"), "\n") } toWrite = append(toWrite, "\n") for _, str := range toWrite { if _, err := w.WriteString(str); err != nil { return err } } } w.Flush() return nil }
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// GenerateFilelist generates a filelist, duh. And writes it to a // given writer. The format of generated file is described in // filelist.ParseFilelist.
[ "GenerateFilelist", "generates", "a", "filelist", "duh", ".", "And", "writes", "it", "to", "a", "given", "writer", ".", "The", "format", "of", "generated", "file", "is", "described", "in", "filelist", ".", "ParseFilelist", "." ]
0c8765619cae3391a9ffa12c8dbd12ba7a475eb8
https://github.com/rkt/rkt/blob/0c8765619cae3391a9ffa12c8dbd12ba7a475eb8/tools/common/filelist/filelist.go#L166-L190
train
rkt/rkt
tools/depsgen/mkfile.go
GenerateFileDeps
func GenerateFileDeps(target, filesGenerator string, files []string) string { return replacePlaceholders(fileDepMkTemplate, "DEPS_GEN_APP_NAME", appName(), "DEPS_GEN_FILES_GENERATOR", filesGenerator, "DEPS_GEN_ALL_FILES_STORED", strings.Join(files, " "), "DEPS_GEN_TARGET", target, ) }
go
func GenerateFileDeps(target, filesGenerator string, files []string) string { return replacePlaceholders(fileDepMkTemplate, "DEPS_GEN_APP_NAME", appName(), "DEPS_GEN_FILES_GENERATOR", filesGenerator, "DEPS_GEN_ALL_FILES_STORED", strings.Join(files, " "), "DEPS_GEN_TARGET", target, ) }
[ "func", "GenerateFileDeps", "(", "target", ",", "filesGenerator", "string", ",", "files", "[", "]", "string", ")", "string", "{", "return", "replacePlaceholders", "(", "fileDepMkTemplate", ",", "\"DEPS_GEN_APP_NAME\"", ",", "appName", "(", ")", ",", "\"DEPS_GEN_FILES_GENERATOR\"", ",", "filesGenerator", ",", "\"DEPS_GEN_ALL_FILES_STORED\"", ",", "strings", ".", "Join", "(", "files", ",", "\" \"", ")", ",", "\"DEPS_GEN_TARGET\"", ",", "target", ",", ")", "\n", "}" ]
// GenerateFileDeps returns contents of make file describing // dependencies of given target on given files and checking if files // weren't added or removed in directories where given files are.
[ "GenerateFileDeps", "returns", "contents", "of", "make", "file", "describing", "dependencies", "of", "given", "target", "on", "given", "files", "and", "checking", "if", "files", "weren", "t", "added", "or", "removed", "in", "directories", "where", "given", "files", "are", "." ]
0c8765619cae3391a9ffa12c8dbd12ba7a475eb8
https://github.com/rkt/rkt/blob/0c8765619cae3391a9ffa12c8dbd12ba7a475eb8/tools/depsgen/mkfile.go#L101-L108
train
rkt/rkt
common/resolv_conf.go
MakeResolvConf
func MakeResolvConf(dns cnitypes.DNS, comment string) string { content := "" if len(comment) > 0 { content += fmt.Sprintf("# %s\n\n", comment) } if len(dns.Search) > 0 { content += fmt.Sprintf("search %s\n", strings.Join(dns.Search, " ")) } for _, ns := range dns.Nameservers { content += fmt.Sprintf("nameserver %s\n", ns) } if len(dns.Options) > 0 { content += fmt.Sprintf("options %s\n", strings.Join(dns.Options, " ")) } if len(dns.Domain) > 0 { content += fmt.Sprintf("domain %s\n", dns.Domain) } return content }
go
func MakeResolvConf(dns cnitypes.DNS, comment string) string { content := "" if len(comment) > 0 { content += fmt.Sprintf("# %s\n\n", comment) } if len(dns.Search) > 0 { content += fmt.Sprintf("search %s\n", strings.Join(dns.Search, " ")) } for _, ns := range dns.Nameservers { content += fmt.Sprintf("nameserver %s\n", ns) } if len(dns.Options) > 0 { content += fmt.Sprintf("options %s\n", strings.Join(dns.Options, " ")) } if len(dns.Domain) > 0 { content += fmt.Sprintf("domain %s\n", dns.Domain) } return content }
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// MakeResolvConf generates resolv.conf contents given a cni DNS configuration
[ "MakeResolvConf", "generates", "resolv", ".", "conf", "contents", "given", "a", "cni", "DNS", "configuration" ]
0c8765619cae3391a9ffa12c8dbd12ba7a475eb8
https://github.com/rkt/rkt/blob/0c8765619cae3391a9ffa12c8dbd12ba7a475eb8/common/resolv_conf.go#L25-L46
train
rkt/rkt
pkg/tar/tar.go
extractFileFromTar
func extractFileFromTar(tr *tar.Reader, file string) ([]byte, error) { for { hdr, err := tr.Next() switch err { case io.EOF: return nil, fmt.Errorf("file not found") case nil: if filepath.Clean(hdr.Name) != filepath.Clean(file) { continue } switch hdr.Typeflag { case tar.TypeReg: case tar.TypeRegA: default: return nil, fmt.Errorf("requested file not a regular file") } buf, err := ioutil.ReadAll(tr) if err != nil { return nil, err } return buf, nil default: return nil, err } } }
go
func extractFileFromTar(tr *tar.Reader, file string) ([]byte, error) { for { hdr, err := tr.Next() switch err { case io.EOF: return nil, fmt.Errorf("file not found") case nil: if filepath.Clean(hdr.Name) != filepath.Clean(file) { continue } switch hdr.Typeflag { case tar.TypeReg: case tar.TypeRegA: default: return nil, fmt.Errorf("requested file not a regular file") } buf, err := ioutil.ReadAll(tr) if err != nil { return nil, err } return buf, nil default: return nil, err } } }
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// extractFileFromTar extracts a regular file from the given tar, returning its // contents as a byte slice
[ "extractFileFromTar", "extracts", "a", "regular", "file", "from", "the", "given", "tar", "returning", "its", "contents", "as", "a", "byte", "slice" ]
0c8765619cae3391a9ffa12c8dbd12ba7a475eb8
https://github.com/rkt/rkt/blob/0c8765619cae3391a9ffa12c8dbd12ba7a475eb8/pkg/tar/tar.go#L248-L273
train
rkt/rkt
networking/portfwd.go
GetForwardableNet
func (n *Networking) GetForwardableNet() (*activeNet, error) { numberNets := len(n.nets) if numberNets == 0 { return nil, fmt.Errorf("no networks found") } for _, net := range n.nets { if net.IPMasq() { return &net, nil } } return &n.nets[numberNets-1], nil }
go
func (n *Networking) GetForwardableNet() (*activeNet, error) { numberNets := len(n.nets) if numberNets == 0 { return nil, fmt.Errorf("no networks found") } for _, net := range n.nets { if net.IPMasq() { return &net, nil } } return &n.nets[numberNets-1], nil }
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// GetForwardableNet iterates through all loaded networks and returns either // the first network that has masquerading enabled, // or the last network in case there is no masqueraded one, // or an error if no network was loaded.
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0c8765619cae3391a9ffa12c8dbd12ba7a475eb8
https://github.com/rkt/rkt/blob/0c8765619cae3391a9ffa12c8dbd12ba7a475eb8/networking/portfwd.go#L36-L47
train
rkt/rkt
networking/portfwd.go
setupForwarding
func (e *podEnv) setupForwarding() error { ipt, err := iptables.New() if err != nil { return err } // Create a separate chain for this pod. This helps with debugging // and makes it easier to cleanup chainDNAT := e.portFwdChain("DNAT") chainSNAT := e.portFwdChain("SNAT") if err = ipt.NewChain("nat", chainDNAT); err != nil { return err } if err = ipt.NewChain("nat", chainSNAT); err != nil { return err } chainRuleDNAT := e.portFwdChainRuleSpec(chainDNAT, "DNAT") chainRuleSNAT := e.portFwdChainRuleSpec(chainSNAT, "SNAT") for _, entry := range []struct { chain string customChainRule []string }{ {"POSTROUTING", chainRuleSNAT}, // traffic originating from this host from loopback {"PREROUTING", chainRuleDNAT}, // outside traffic hitting this host {"OUTPUT", chainRuleDNAT}, // traffic originating from this host on non-loopback } { exists, err := ipt.Exists("nat", entry.chain, entry.customChainRule...) if err != nil { return err } if !exists { err = ipt.Insert("nat", entry.chain, 1, entry.customChainRule...) if err != nil { return err } } } return nil }
go
func (e *podEnv) setupForwarding() error { ipt, err := iptables.New() if err != nil { return err } // Create a separate chain for this pod. This helps with debugging // and makes it easier to cleanup chainDNAT := e.portFwdChain("DNAT") chainSNAT := e.portFwdChain("SNAT") if err = ipt.NewChain("nat", chainDNAT); err != nil { return err } if err = ipt.NewChain("nat", chainSNAT); err != nil { return err } chainRuleDNAT := e.portFwdChainRuleSpec(chainDNAT, "DNAT") chainRuleSNAT := e.portFwdChainRuleSpec(chainSNAT, "SNAT") for _, entry := range []struct { chain string customChainRule []string }{ {"POSTROUTING", chainRuleSNAT}, // traffic originating from this host from loopback {"PREROUTING", chainRuleDNAT}, // outside traffic hitting this host {"OUTPUT", chainRuleDNAT}, // traffic originating from this host on non-loopback } { exists, err := ipt.Exists("nat", entry.chain, entry.customChainRule...) if err != nil { return err } if !exists { err = ipt.Insert("nat", entry.chain, 1, entry.customChainRule...) if err != nil { return err } } } return nil }
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// setupForwarding creates the iptables chains
[ "setupForwarding", "creates", "the", "iptables", "chains" ]
0c8765619cae3391a9ffa12c8dbd12ba7a475eb8
https://github.com/rkt/rkt/blob/0c8765619cae3391a9ffa12c8dbd12ba7a475eb8/networking/portfwd.go#L70-L112
train
rkt/rkt
stage1/init/kvm.go
KvmNetworkingToSystemd
func KvmNetworkingToSystemd(p *stage1commontypes.Pod, n *networking.Networking) error { podRoot := common.Stage1RootfsPath(p.Root) // networking netDescriptions := kvm.GetNetworkDescriptions(n) if err := kvm.GenerateNetworkInterfaceUnits(filepath.Join(podRoot, stage1initcommon.UnitsDir), netDescriptions); err != nil { return errwrap.Wrap(errors.New("failed to transform networking to units"), err) } return nil }
go
func KvmNetworkingToSystemd(p *stage1commontypes.Pod, n *networking.Networking) error { podRoot := common.Stage1RootfsPath(p.Root) // networking netDescriptions := kvm.GetNetworkDescriptions(n) if err := kvm.GenerateNetworkInterfaceUnits(filepath.Join(podRoot, stage1initcommon.UnitsDir), netDescriptions); err != nil { return errwrap.Wrap(errors.New("failed to transform networking to units"), err) } return nil }
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// KvmNetworkingToSystemd generates systemd unit files for a pod according to network configuration
[ "KvmNetworkingToSystemd", "generates", "systemd", "unit", "files", "for", "a", "pod", "according", "to", "network", "configuration" ]
0c8765619cae3391a9ffa12c8dbd12ba7a475eb8
https://github.com/rkt/rkt/blob/0c8765619cae3391a9ffa12c8dbd12ba7a475eb8/stage1/init/kvm.go#L44-L54
train
rkt/rkt
pkg/pod/pods.go
initPods
func initPods(dataDir string) error { if !podsInitialized { dirs := []string{embryoDir(dataDir), prepareDir(dataDir), preparedDir(dataDir), runDir(dataDir), exitedGarbageDir(dataDir), garbageDir(dataDir)} for _, d := range dirs { if err := os.MkdirAll(d, 0750); err != nil { return errwrap.Wrap(errors.New("error creating directory"), err) } } podsInitialized = true } return nil }
go
func initPods(dataDir string) error { if !podsInitialized { dirs := []string{embryoDir(dataDir), prepareDir(dataDir), preparedDir(dataDir), runDir(dataDir), exitedGarbageDir(dataDir), garbageDir(dataDir)} for _, d := range dirs { if err := os.MkdirAll(d, 0750); err != nil { return errwrap.Wrap(errors.New("error creating directory"), err) } } podsInitialized = true } return nil }
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// initPods creates the required global directories
[ "initPods", "creates", "the", "required", "global", "directories" ]
0c8765619cae3391a9ffa12c8dbd12ba7a475eb8
https://github.com/rkt/rkt/blob/0c8765619cae3391a9ffa12c8dbd12ba7a475eb8/pkg/pod/pods.go#L136-L147
train
rkt/rkt
pkg/pod/pods.go
embryoPath
func (p *Pod) embryoPath() string { return filepath.Join(embryoDir(p.dataDir), p.UUID.String()) }
go
func (p *Pod) embryoPath() string { return filepath.Join(embryoDir(p.dataDir), p.UUID.String()) }
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// embryoPath returns the path to the pod where it would be in the embryoDir in its embryonic state.
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0c8765619cae3391a9ffa12c8dbd12ba7a475eb8
https://github.com/rkt/rkt/blob/0c8765619cae3391a9ffa12c8dbd12ba7a475eb8/pkg/pod/pods.go#L304-L306
train
rkt/rkt
pkg/pod/pods.go
preparePath
func (p *Pod) preparePath() string { return filepath.Join(prepareDir(p.dataDir), p.UUID.String()) }
go
func (p *Pod) preparePath() string { return filepath.Join(prepareDir(p.dataDir), p.UUID.String()) }
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// preparePath returns the path to the pod where it would be in the prepareDir in its preparing state.
[ "preparePath", "returns", "the", "path", "to", "the", "pod", "where", "it", "would", "be", "in", "the", "prepareDir", "in", "its", "preparing", "state", "." ]
0c8765619cae3391a9ffa12c8dbd12ba7a475eb8
https://github.com/rkt/rkt/blob/0c8765619cae3391a9ffa12c8dbd12ba7a475eb8/pkg/pod/pods.go#L309-L311
train
rkt/rkt
pkg/pod/pods.go
preparedPath
func (p *Pod) preparedPath() string { return filepath.Join(preparedDir(p.dataDir), p.UUID.String()) }
go
func (p *Pod) preparedPath() string { return filepath.Join(preparedDir(p.dataDir), p.UUID.String()) }
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// preparedPath returns the path to the pod where it would be in the preparedDir.
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0c8765619cae3391a9ffa12c8dbd12ba7a475eb8
https://github.com/rkt/rkt/blob/0c8765619cae3391a9ffa12c8dbd12ba7a475eb8/pkg/pod/pods.go#L314-L316
train
rkt/rkt
pkg/pod/pods.go
runPath
func (p *Pod) runPath() string { return filepath.Join(runDir(p.dataDir), p.UUID.String()) }
go
func (p *Pod) runPath() string { return filepath.Join(runDir(p.dataDir), p.UUID.String()) }
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// runPath returns the path to the pod where it would be in the runDir.
[ "runPath", "returns", "the", "path", "to", "the", "pod", "where", "it", "would", "be", "in", "the", "runDir", "." ]
0c8765619cae3391a9ffa12c8dbd12ba7a475eb8
https://github.com/rkt/rkt/blob/0c8765619cae3391a9ffa12c8dbd12ba7a475eb8/pkg/pod/pods.go#L319-L321
train
rkt/rkt
pkg/pod/pods.go
exitedGarbagePath
func (p *Pod) exitedGarbagePath() string { return filepath.Join(exitedGarbageDir(p.dataDir), p.UUID.String()) }
go
func (p *Pod) exitedGarbagePath() string { return filepath.Join(exitedGarbageDir(p.dataDir), p.UUID.String()) }
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// exitedGarbagePath returns the path to the pod where it would be in the exitedGarbageDir.
[ "exitedGarbagePath", "returns", "the", "path", "to", "the", "pod", "where", "it", "would", "be", "in", "the", "exitedGarbageDir", "." ]
0c8765619cae3391a9ffa12c8dbd12ba7a475eb8
https://github.com/rkt/rkt/blob/0c8765619cae3391a9ffa12c8dbd12ba7a475eb8/pkg/pod/pods.go#L324-L326
train
rkt/rkt
pkg/pod/pods.go
garbagePath
func (p *Pod) garbagePath() string { return filepath.Join(garbageDir(p.dataDir), p.UUID.String()) }
go
func (p *Pod) garbagePath() string { return filepath.Join(garbageDir(p.dataDir), p.UUID.String()) }
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// garbagePath returns the path to the pod where it would be in the garbageDir.
[ "garbagePath", "returns", "the", "path", "to", "the", "pod", "where", "it", "would", "be", "in", "the", "garbageDir", "." ]
0c8765619cae3391a9ffa12c8dbd12ba7a475eb8
https://github.com/rkt/rkt/blob/0c8765619cae3391a9ffa12c8dbd12ba7a475eb8/pkg/pod/pods.go#L329-L331
train
rkt/rkt
pkg/pod/pods.go
ToExitedGarbage
func (p *Pod) ToExitedGarbage() error { if !p.isExited || p.isExitedGarbage { return fmt.Errorf("bug: only exited non-garbage pods may transition to exited-garbage") } if err := os.Rename(p.runPath(), p.exitedGarbagePath()); err != nil { // TODO(vc): another case where we could race with a concurrent ToExitedGarbage(), let caller deal with the error. return err } df, err := os.Open(exitedGarbageDir(p.dataDir)) if err != nil { return err } defer df.Close() if err := df.Sync(); err != nil { return err } p.isExitedGarbage = true return nil }
go
func (p *Pod) ToExitedGarbage() error { if !p.isExited || p.isExitedGarbage { return fmt.Errorf("bug: only exited non-garbage pods may transition to exited-garbage") } if err := os.Rename(p.runPath(), p.exitedGarbagePath()); err != nil { // TODO(vc): another case where we could race with a concurrent ToExitedGarbage(), let caller deal with the error. return err } df, err := os.Open(exitedGarbageDir(p.dataDir)) if err != nil { return err } defer df.Close() if err := df.Sync(); err != nil { return err } p.isExitedGarbage = true return nil }
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// ToExitedGarbage transitions a pod from run -> exitedGarbage // This method refreshes the pod state.
[ "ToExitedGarbage", "transitions", "a", "pod", "from", "run", "-", ">", "exitedGarbage", "This", "method", "refreshes", "the", "pod", "state", "." ]
0c8765619cae3391a9ffa12c8dbd12ba7a475eb8
https://github.com/rkt/rkt/blob/0c8765619cae3391a9ffa12c8dbd12ba7a475eb8/pkg/pod/pods.go#L440-L462
train
rkt/rkt
pkg/pod/pods.go
ToGarbage
func (p *Pod) ToGarbage() error { if !p.isAbortedPrepare && !p.isPrepared { return fmt.Errorf("bug: only failed prepare or prepared pods may transition to garbage") } if err := os.Rename(p.Path(), p.garbagePath()); err != nil { return err } df, err := os.Open(garbageDir(p.dataDir)) if err != nil { return err } defer df.Close() if err := df.Sync(); err != nil { return err } p.isAbortedPrepare = false p.isPrepared = false p.isGarbage = true return nil }
go
func (p *Pod) ToGarbage() error { if !p.isAbortedPrepare && !p.isPrepared { return fmt.Errorf("bug: only failed prepare or prepared pods may transition to garbage") } if err := os.Rename(p.Path(), p.garbagePath()); err != nil { return err } df, err := os.Open(garbageDir(p.dataDir)) if err != nil { return err } defer df.Close() if err := df.Sync(); err != nil { return err } p.isAbortedPrepare = false p.isPrepared = false p.isGarbage = true return nil }
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// ToGarbage transitions a pod from abortedPrepared -> garbage or prepared -> garbage // This method refreshes the pod state.
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0c8765619cae3391a9ffa12c8dbd12ba7a475eb8
https://github.com/rkt/rkt/blob/0c8765619cae3391a9ffa12c8dbd12ba7a475eb8/pkg/pod/pods.go#L466-L489
train
rkt/rkt
pkg/pod/pods.go
listPods
func listPods(dataDir string, include IncludeMask) ([]string, error) { // uniqued due to the possibility of a pod being renamed from across directories during the list operation ups := make(map[string]struct{}) dirs := []struct { kind IncludeMask path string }{ { // the order here is significant: embryo -> preparing -> prepared -> running -> exitedGarbage kind: IncludeEmbryoDir, path: embryoDir(dataDir), }, { kind: IncludePrepareDir, path: prepareDir(dataDir), }, { kind: IncludePreparedDir, path: preparedDir(dataDir), }, { kind: IncludeRunDir, path: runDir(dataDir), }, { kind: IncludeExitedGarbageDir, path: exitedGarbageDir(dataDir), }, { kind: IncludeGarbageDir, path: garbageDir(dataDir), }, } for _, d := range dirs { if include&d.kind != 0 { ps, err := listPodsFromDir(d.path) if err != nil { return nil, err } for _, p := range ps { ups[p] = struct{}{} } } } ps := make([]string, 0, len(ups)) for p := range ups { ps = append(ps, p) } return ps, nil }
go
func listPods(dataDir string, include IncludeMask) ([]string, error) { // uniqued due to the possibility of a pod being renamed from across directories during the list operation ups := make(map[string]struct{}) dirs := []struct { kind IncludeMask path string }{ { // the order here is significant: embryo -> preparing -> prepared -> running -> exitedGarbage kind: IncludeEmbryoDir, path: embryoDir(dataDir), }, { kind: IncludePrepareDir, path: prepareDir(dataDir), }, { kind: IncludePreparedDir, path: preparedDir(dataDir), }, { kind: IncludeRunDir, path: runDir(dataDir), }, { kind: IncludeExitedGarbageDir, path: exitedGarbageDir(dataDir), }, { kind: IncludeGarbageDir, path: garbageDir(dataDir), }, } for _, d := range dirs { if include&d.kind != 0 { ps, err := listPodsFromDir(d.path) if err != nil { return nil, err } for _, p := range ps { ups[p] = struct{}{} } } } ps := make([]string, 0, len(ups)) for p := range ups { ps = append(ps, p) } return ps, nil }
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// listPods returns a list of pod uuids in string form.
[ "listPods", "returns", "a", "list", "of", "pod", "uuids", "in", "string", "form", "." ]
0c8765619cae3391a9ffa12c8dbd12ba7a475eb8
https://github.com/rkt/rkt/blob/0c8765619cae3391a9ffa12c8dbd12ba7a475eb8/pkg/pod/pods.go#L492-L538
train
rkt/rkt
pkg/pod/pods.go
listPodsFromDir
func listPodsFromDir(cdir string) ([]string, error) { var ps []string ls, err := ioutil.ReadDir(cdir) if err != nil { if os.IsNotExist(err) { return ps, nil } return nil, errwrap.Wrap(errors.New("cannot read pods directory"), err) } for _, p := range ls { if !p.IsDir() { fmt.Fprintf(os.Stderr, "unrecognized entry: %q, ignoring", p.Name()) continue } ps = append(ps, p.Name()) } return ps, nil }
go
func listPodsFromDir(cdir string) ([]string, error) { var ps []string ls, err := ioutil.ReadDir(cdir) if err != nil { if os.IsNotExist(err) { return ps, nil } return nil, errwrap.Wrap(errors.New("cannot read pods directory"), err) } for _, p := range ls { if !p.IsDir() { fmt.Fprintf(os.Stderr, "unrecognized entry: %q, ignoring", p.Name()) continue } ps = append(ps, p.Name()) } return ps, nil }
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// listPodsFromDir returns a list of pod uuids in string form from a specific directory.
[ "listPodsFromDir", "returns", "a", "list", "of", "pod", "uuids", "in", "string", "form", "from", "a", "specific", "directory", "." ]
0c8765619cae3391a9ffa12c8dbd12ba7a475eb8
https://github.com/rkt/rkt/blob/0c8765619cae3391a9ffa12c8dbd12ba7a475eb8/pkg/pod/pods.go#L541-L561
train
rkt/rkt
pkg/pod/pods.go
readFile
func (p *Pod) readFile(path string) ([]byte, error) { f, err := p.openFile(path, syscall.O_RDONLY) if err != nil { return nil, err } defer f.Close() return ioutil.ReadAll(f) }
go
func (p *Pod) readFile(path string) ([]byte, error) { f, err := p.openFile(path, syscall.O_RDONLY) if err != nil { return nil, err } defer f.Close() return ioutil.ReadAll(f) }
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// readFile reads an entire file from a pod's directory.
[ "readFile", "reads", "an", "entire", "file", "from", "a", "pod", "s", "directory", "." ]
0c8765619cae3391a9ffa12c8dbd12ba7a475eb8
https://github.com/rkt/rkt/blob/0c8765619cae3391a9ffa12c8dbd12ba7a475eb8/pkg/pod/pods.go#L654-L662
train
rkt/rkt
pkg/pod/pods.go
readIntFromFile
func (p *Pod) readIntFromFile(path string) (i int, err error) { b, err := p.readFile(path) if err != nil { return } _, err = fmt.Sscanf(string(b), "%d", &i) return }
go
func (p *Pod) readIntFromFile(path string) (i int, err error) { b, err := p.readFile(path) if err != nil { return } _, err = fmt.Sscanf(string(b), "%d", &i) return }
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// readIntFromFile reads an int from a file in a pod's directory.
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0c8765619cae3391a9ffa12c8dbd12ba7a475eb8
https://github.com/rkt/rkt/blob/0c8765619cae3391a9ffa12c8dbd12ba7a475eb8/pkg/pod/pods.go#L665-L672
train
rkt/rkt
pkg/pod/pods.go
openFile
func (p *Pod) openFile(path string, flags int) (*os.File, error) { cdirfd, err := p.Fd() if err != nil { return nil, err } fd, err := syscall.Openat(cdirfd, path, flags, 0) if err != nil { return nil, err } return os.NewFile(uintptr(fd), path), nil }
go
func (p *Pod) openFile(path string, flags int) (*os.File, error) { cdirfd, err := p.Fd() if err != nil { return nil, err } fd, err := syscall.Openat(cdirfd, path, flags, 0) if err != nil { return nil, err } return os.NewFile(uintptr(fd), path), nil }
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// openFile opens a file from a pod's directory returning a file descriptor.
[ "openFile", "opens", "a", "file", "from", "a", "pod", "s", "directory", "returning", "a", "file", "descriptor", "." ]
0c8765619cae3391a9ffa12c8dbd12ba7a475eb8
https://github.com/rkt/rkt/blob/0c8765619cae3391a9ffa12c8dbd12ba7a475eb8/pkg/pod/pods.go#L675-L687
train
rkt/rkt
pkg/pod/pods.go
getChildPID
func getChildPID(ppid int) (int, error) { var pid int // If possible, get the child in O(1). Fallback on O(n) when the kernel does not have // either CONFIG_PROC_CHILDREN or CONFIG_CHECKPOINT_RESTORE _, err := os.Stat("/proc/1/task/1/children") if err == nil { b, err := ioutil.ReadFile(fmt.Sprintf("/proc/%d/task/%d/children", ppid, ppid)) if err == nil { children := strings.SplitN(string(b), " ", 2) if len(children) == 2 && children[1] != "" { return -1, fmt.Errorf("too many children of pid %d", ppid) } if _, err := fmt.Sscanf(children[0], "%d ", &pid); err == nil { return pid, nil } } return -1, ErrChildNotReady{} } // Fallback on the slower method fdir, err := os.Open(`/proc`) if err != nil { return -1, err } defer fdir.Close() for { fi, err := fdir.Readdir(1) if err == io.EOF { break } if err != nil { return -1, err } if len(fi) == 0 { // See https://github.com/rkt/rkt/issues/3109#issuecomment-242209246 continue } var pid64 int64 if pid64, err = strconv.ParseInt(fi[0].Name(), 10, 0); err != nil { continue } filename := fmt.Sprintf("/proc/%d/stat", pid64) statBytes, err := ioutil.ReadFile(filename) if err != nil { // The process just died? It's not the one we want then. continue } statFields := strings.SplitN(string(statBytes), " ", 5) if len(statFields) != 5 { return -1, fmt.Errorf("incomplete file %q", filename) } if statFields[3] == fmt.Sprintf("%d", ppid) { return int(pid64), nil } } return -1, ErrChildNotReady{} }
go
func getChildPID(ppid int) (int, error) { var pid int // If possible, get the child in O(1). Fallback on O(n) when the kernel does not have // either CONFIG_PROC_CHILDREN or CONFIG_CHECKPOINT_RESTORE _, err := os.Stat("/proc/1/task/1/children") if err == nil { b, err := ioutil.ReadFile(fmt.Sprintf("/proc/%d/task/%d/children", ppid, ppid)) if err == nil { children := strings.SplitN(string(b), " ", 2) if len(children) == 2 && children[1] != "" { return -1, fmt.Errorf("too many children of pid %d", ppid) } if _, err := fmt.Sscanf(children[0], "%d ", &pid); err == nil { return pid, nil } } return -1, ErrChildNotReady{} } // Fallback on the slower method fdir, err := os.Open(`/proc`) if err != nil { return -1, err } defer fdir.Close() for { fi, err := fdir.Readdir(1) if err == io.EOF { break } if err != nil { return -1, err } if len(fi) == 0 { // See https://github.com/rkt/rkt/issues/3109#issuecomment-242209246 continue } var pid64 int64 if pid64, err = strconv.ParseInt(fi[0].Name(), 10, 0); err != nil { continue } filename := fmt.Sprintf("/proc/%d/stat", pid64) statBytes, err := ioutil.ReadFile(filename) if err != nil { // The process just died? It's not the one we want then. continue } statFields := strings.SplitN(string(statBytes), " ", 5) if len(statFields) != 5 { return -1, fmt.Errorf("incomplete file %q", filename) } if statFields[3] == fmt.Sprintf("%d", ppid) { return int(pid64), nil } } return -1, ErrChildNotReady{} }
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// Returns the pid of the child, or ErrChildNotReady if not ready
[ "Returns", "the", "pid", "of", "the", "child", "or", "ErrChildNotReady", "if", "not", "ready" ]
0c8765619cae3391a9ffa12c8dbd12ba7a475eb8
https://github.com/rkt/rkt/blob/0c8765619cae3391a9ffa12c8dbd12ba7a475eb8/pkg/pod/pods.go#L712-L771
train
rkt/rkt
pkg/pod/pods.go
getAppsHashes
func (p *Pod) getAppsHashes() ([]types.Hash, error) { apps, err := p.getApps() if err != nil { return nil, err } var hashes []types.Hash for _, a := range apps { hashes = append(hashes, a.Image.ID) } return hashes, nil }
go
func (p *Pod) getAppsHashes() ([]types.Hash, error) { apps, err := p.getApps() if err != nil { return nil, err } var hashes []types.Hash for _, a := range apps { hashes = append(hashes, a.Image.ID) } return hashes, nil }
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// getAppsHashes returns a list of the app hashes in the pod
[ "getAppsHashes", "returns", "a", "list", "of", "the", "app", "hashes", "in", "the", "pod" ]
0c8765619cae3391a9ffa12c8dbd12ba7a475eb8
https://github.com/rkt/rkt/blob/0c8765619cae3391a9ffa12c8dbd12ba7a475eb8/pkg/pod/pods.go#L824-L836
train
rkt/rkt
pkg/pod/pods.go
getApps
func (p *Pod) getApps() (schema.AppList, error) { _, pm, err := p.PodManifest() if err != nil { return nil, err } return pm.Apps, nil }
go
func (p *Pod) getApps() (schema.AppList, error) { _, pm, err := p.PodManifest() if err != nil { return nil, err } return pm.Apps, nil }
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// getApps returns a list of apps in the pod
[ "getApps", "returns", "a", "list", "of", "apps", "in", "the", "pod" ]
0c8765619cae3391a9ffa12c8dbd12ba7a475eb8
https://github.com/rkt/rkt/blob/0c8765619cae3391a9ffa12c8dbd12ba7a475eb8/pkg/pod/pods.go#L839-L845
train
rkt/rkt
pkg/pod/pods.go
getDirNames
func (p *Pod) getDirNames(path string) ([]string, error) { dir, err := p.openFile(path, syscall.O_RDONLY|syscall.O_DIRECTORY) if err != nil { return nil, errwrap.Wrap(errors.New("unable to open directory"), err) } defer dir.Close() ld, err := dir.Readdirnames(0) if err != nil { return nil, errwrap.Wrap(errors.New("unable to read directory"), err) } return ld, nil }
go
func (p *Pod) getDirNames(path string) ([]string, error) { dir, err := p.openFile(path, syscall.O_RDONLY|syscall.O_DIRECTORY) if err != nil { return nil, errwrap.Wrap(errors.New("unable to open directory"), err) } defer dir.Close() ld, err := dir.Readdirnames(0) if err != nil { return nil, errwrap.Wrap(errors.New("unable to read directory"), err) } return ld, nil }
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// getDirNames returns the list of names from a pod's directory
[ "getDirNames", "returns", "the", "list", "of", "names", "from", "a", "pod", "s", "directory" ]
0c8765619cae3391a9ffa12c8dbd12ba7a475eb8
https://github.com/rkt/rkt/blob/0c8765619cae3391a9ffa12c8dbd12ba7a475eb8/pkg/pod/pods.go#L848-L861
train
rkt/rkt
pkg/pod/pods.go
Sync
func (p *Pod) Sync() error { cfd, err := p.Fd() if err != nil { return errwrap.Wrap(fmt.Errorf("error acquiring pod %v dir fd", p.UUID.String()), err) } if err := sys.Syncfs(cfd); err != nil { return errwrap.Wrap(fmt.Errorf("failed to sync pod %v data", p.UUID.String()), err) } return nil }
go
func (p *Pod) Sync() error { cfd, err := p.Fd() if err != nil { return errwrap.Wrap(fmt.Errorf("error acquiring pod %v dir fd", p.UUID.String()), err) } if err := sys.Syncfs(cfd); err != nil { return errwrap.Wrap(fmt.Errorf("failed to sync pod %v data", p.UUID.String()), err) } return nil }
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// Sync syncs the pod data. By now it calls a syncfs on the filesystem // containing the pod's directory.
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0c8765619cae3391a9ffa12c8dbd12ba7a475eb8
https://github.com/rkt/rkt/blob/0c8765619cae3391a9ffa12c8dbd12ba7a475eb8/pkg/pod/pods.go#L873-L882
train
rkt/rkt
pkg/pod/pods.go
WalkPods
func WalkPods(dataDir string, include IncludeMask, f func(*Pod)) error { if err := initPods(dataDir); err != nil { return err } ls, err := listPods(dataDir, include) if err != nil { return errwrap.Wrap(errors.New("failed to get pods"), err) } sort.Strings(ls) for _, uuid := range ls { u, err := types.NewUUID(uuid) if err != nil { fmt.Fprintf(os.Stderr, "skipping %q: %v", uuid, err) continue } p, err := getPod(dataDir, u) if err != nil { fmt.Fprintf(os.Stderr, "skipping %q: %v", uuid, err) continue } // omit pods found in unrequested states // this is to cover a race between listPods finding the uuids and pod states changing // it's preferable to keep these operations lock-free, for example a `rkt gc` shouldn't block `rkt run`. if p.isEmbryo && include&IncludeEmbryoDir == 0 || p.isExitedGarbage && include&IncludeExitedGarbageDir == 0 || p.isGarbage && include&IncludeGarbageDir == 0 || p.isPrepared && include&IncludePreparedDir == 0 || ((p.isPreparing || p.isAbortedPrepare) && include&IncludePrepareDir == 0) || p.isRunning() && include&IncludeRunDir == 0 { p.Close() continue } f(p) p.Close() } return nil }
go
func WalkPods(dataDir string, include IncludeMask, f func(*Pod)) error { if err := initPods(dataDir); err != nil { return err } ls, err := listPods(dataDir, include) if err != nil { return errwrap.Wrap(errors.New("failed to get pods"), err) } sort.Strings(ls) for _, uuid := range ls { u, err := types.NewUUID(uuid) if err != nil { fmt.Fprintf(os.Stderr, "skipping %q: %v", uuid, err) continue } p, err := getPod(dataDir, u) if err != nil { fmt.Fprintf(os.Stderr, "skipping %q: %v", uuid, err) continue } // omit pods found in unrequested states // this is to cover a race between listPods finding the uuids and pod states changing // it's preferable to keep these operations lock-free, for example a `rkt gc` shouldn't block `rkt run`. if p.isEmbryo && include&IncludeEmbryoDir == 0 || p.isExitedGarbage && include&IncludeExitedGarbageDir == 0 || p.isGarbage && include&IncludeGarbageDir == 0 || p.isPrepared && include&IncludePreparedDir == 0 || ((p.isPreparing || p.isAbortedPrepare) && include&IncludePrepareDir == 0) || p.isRunning() && include&IncludeRunDir == 0 { p.Close() continue } f(p) p.Close() } return nil }
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// WalkPods iterates over the included directories calling function f for every pod found. // The pod will be closed after the function 'f' is executed.
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0c8765619cae3391a9ffa12c8dbd12ba7a475eb8
https://github.com/rkt/rkt/blob/0c8765619cae3391a9ffa12c8dbd12ba7a475eb8/pkg/pod/pods.go#L886-L927
train
rkt/rkt
pkg/pod/pods.go
PodManifest
func (p *Pod) PodManifest() ([]byte, *schema.PodManifest, error) { pmb, err := p.readFile("pod") if err != nil { return nil, nil, errwrap.Wrap(errors.New("error reading pod manifest"), err) } pm := &schema.PodManifest{} if err = pm.UnmarshalJSON(pmb); err != nil { return nil, nil, errwrap.Wrap(errors.New("invalid pod manifest"), err) } return pmb, pm, nil }
go
func (p *Pod) PodManifest() ([]byte, *schema.PodManifest, error) { pmb, err := p.readFile("pod") if err != nil { return nil, nil, errwrap.Wrap(errors.New("error reading pod manifest"), err) } pm := &schema.PodManifest{} if err = pm.UnmarshalJSON(pmb); err != nil { return nil, nil, errwrap.Wrap(errors.New("invalid pod manifest"), err) } return pmb, pm, nil }
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// PodManifest reads the pod manifest, returns the raw bytes and the unmarshalled object.
[ "PodManifest", "reads", "the", "pod", "manifest", "returns", "the", "raw", "bytes", "and", "the", "unmarshalled", "object", "." ]
0c8765619cae3391a9ffa12c8dbd12ba7a475eb8
https://github.com/rkt/rkt/blob/0c8765619cae3391a9ffa12c8dbd12ba7a475eb8/pkg/pod/pods.go#L930-L940
train
rkt/rkt
pkg/pod/pods.go
AppImageManifest
func (p *Pod) AppImageManifest(appName string) (*schema.ImageManifest, error) { appACName, err := types.NewACName(appName) if err != nil { return nil, err } imb, err := ioutil.ReadFile(common.AppImageManifestPath(p.Path(), *appACName)) if err != nil { return nil, err } aim := &schema.ImageManifest{} if err := aim.UnmarshalJSON(imb); err != nil { return nil, errwrap.Wrap(fmt.Errorf("invalid image manifest for app %q", appName), err) } return aim, nil }
go
func (p *Pod) AppImageManifest(appName string) (*schema.ImageManifest, error) { appACName, err := types.NewACName(appName) if err != nil { return nil, err } imb, err := ioutil.ReadFile(common.AppImageManifestPath(p.Path(), *appACName)) if err != nil { return nil, err } aim := &schema.ImageManifest{} if err := aim.UnmarshalJSON(imb); err != nil { return nil, errwrap.Wrap(fmt.Errorf("invalid image manifest for app %q", appName), err) } return aim, nil }
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// AppImageManifest returns an ImageManifest for the app.
[ "AppImageManifest", "returns", "an", "ImageManifest", "for", "the", "app", "." ]
0c8765619cae3391a9ffa12c8dbd12ba7a475eb8
https://github.com/rkt/rkt/blob/0c8765619cae3391a9ffa12c8dbd12ba7a475eb8/pkg/pod/pods.go#L943-L959
train
rkt/rkt
pkg/pod/pods.go
CreationTime
func (p *Pod) CreationTime() (time.Time, error) { if !(p.isPrepared || p.isRunning() || p.IsAfterRun()) { return time.Time{}, nil } t, err := p.getModTime("pod-created") if err == nil { return t, nil } if !os.IsNotExist(err) { return t, err } // backwards compatibility with rkt before v1.20 return p.getModTime("pod") }
go
func (p *Pod) CreationTime() (time.Time, error) { if !(p.isPrepared || p.isRunning() || p.IsAfterRun()) { return time.Time{}, nil } t, err := p.getModTime("pod-created") if err == nil { return t, nil } if !os.IsNotExist(err) { return t, err } // backwards compatibility with rkt before v1.20 return p.getModTime("pod") }
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// CreationTime returns the time when the pod was created. // This happens at prepare time.
[ "CreationTime", "returns", "the", "time", "when", "the", "pod", "was", "created", ".", "This", "happens", "at", "prepare", "time", "." ]
0c8765619cae3391a9ffa12c8dbd12ba7a475eb8
https://github.com/rkt/rkt/blob/0c8765619cae3391a9ffa12c8dbd12ba7a475eb8/pkg/pod/pods.go#L963-L976
train
rkt/rkt
pkg/pod/pods.go
StartTime
func (p *Pod) StartTime() (time.Time, error) { var ( t time.Time retErr error ) if !p.isRunning() && !p.IsAfterRun() { // hasn't started return t, nil } // check pid and ppid since stage1s can choose one xor the other for _, ctimeFile := range []string{"pid", "ppid"} { t, err := p.getModTime(ctimeFile) if err == nil { return t, nil } // if there's an error starting the pod, it can go to "exited" without // creating a ppid/pid file, so ignore not-exist errors. if !os.IsNotExist(err) { retErr = err } } return t, retErr }
go
func (p *Pod) StartTime() (time.Time, error) { var ( t time.Time retErr error ) if !p.isRunning() && !p.IsAfterRun() { // hasn't started return t, nil } // check pid and ppid since stage1s can choose one xor the other for _, ctimeFile := range []string{"pid", "ppid"} { t, err := p.getModTime(ctimeFile) if err == nil { return t, nil } // if there's an error starting the pod, it can go to "exited" without // creating a ppid/pid file, so ignore not-exist errors. if !os.IsNotExist(err) { retErr = err } } return t, retErr }
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// StartTime returns the time when the pod was started.
[ "StartTime", "returns", "the", "time", "when", "the", "pod", "was", "started", "." ]
0c8765619cae3391a9ffa12c8dbd12ba7a475eb8
https://github.com/rkt/rkt/blob/0c8765619cae3391a9ffa12c8dbd12ba7a475eb8/pkg/pod/pods.go#L979-L1004
train
rkt/rkt
pkg/pod/pods.go
GCMarkedTime
func (p *Pod) GCMarkedTime() (time.Time, error) { if !p.isGarbage && !p.isExitedGarbage { return time.Time{}, nil } // At this point, the pod is in either exited-garbage dir, garbage dir or gone already. podPath := p.Path() if podPath == "" { // Pod is gone. return time.Time{}, nil } st := &syscall.Stat_t{} if err := syscall.Lstat(podPath, st); err != nil { if err == syscall.ENOENT { // Pod is gone. err = nil } return time.Time{}, err } return time.Unix(st.Ctim.Unix()), nil }
go
func (p *Pod) GCMarkedTime() (time.Time, error) { if !p.isGarbage && !p.isExitedGarbage { return time.Time{}, nil } // At this point, the pod is in either exited-garbage dir, garbage dir or gone already. podPath := p.Path() if podPath == "" { // Pod is gone. return time.Time{}, nil } st := &syscall.Stat_t{} if err := syscall.Lstat(podPath, st); err != nil { if err == syscall.ENOENT { // Pod is gone. err = nil } return time.Time{}, err } return time.Unix(st.Ctim.Unix()), nil }
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// GCMarkedTime returns the time when the pod is marked by gc.
[ "GCMarkedTime", "returns", "the", "time", "when", "the", "pod", "is", "marked", "by", "gc", "." ]
0c8765619cae3391a9ffa12c8dbd12ba7a475eb8
https://github.com/rkt/rkt/blob/0c8765619cae3391a9ffa12c8dbd12ba7a475eb8/pkg/pod/pods.go#L1007-L1028
train
rkt/rkt
pkg/pod/pods.go
Pid
func (p *Pod) Pid() (int, error) { if pid, err := p.readIntFromFile("pid"); err == nil { return pid, nil } if pid, err := p.readIntFromFile("ppid"); err != nil { return -1, err } else { return pid, nil } }
go
func (p *Pod) Pid() (int, error) { if pid, err := p.readIntFromFile("pid"); err == nil { return pid, nil } if pid, err := p.readIntFromFile("ppid"); err != nil { return -1, err } else { return pid, nil } }
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// Pid returns the pid of the stage1 process that started the pod.
[ "Pid", "returns", "the", "pid", "of", "the", "stage1", "process", "that", "started", "the", "pod", "." ]
0c8765619cae3391a9ffa12c8dbd12ba7a475eb8
https://github.com/rkt/rkt/blob/0c8765619cae3391a9ffa12c8dbd12ba7a475eb8/pkg/pod/pods.go#L1031-L1040
train
rkt/rkt
pkg/pod/pods.go
Stage1RootfsPath
func (p *Pod) Stage1RootfsPath() (string, error) { stage1RootfsPath := "stage1/rootfs" if p.UsesOverlay() { stage1TreeStoreID, err := p.GetStage1TreeStoreID() if err != nil { return "", err } stage1RootfsPath = fmt.Sprintf("overlay/%s/upper/", stage1TreeStoreID) } return filepath.Join(p.Path(), stage1RootfsPath), nil }
go
func (p *Pod) Stage1RootfsPath() (string, error) { stage1RootfsPath := "stage1/rootfs" if p.UsesOverlay() { stage1TreeStoreID, err := p.GetStage1TreeStoreID() if err != nil { return "", err } stage1RootfsPath = fmt.Sprintf("overlay/%s/upper/", stage1TreeStoreID) } return filepath.Join(p.Path(), stage1RootfsPath), nil }
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// Stage1RootfsPath returns the stage1 path of the pod.
[ "Stage1RootfsPath", "returns", "the", "stage1", "path", "of", "the", "pod", "." ]
0c8765619cae3391a9ffa12c8dbd12ba7a475eb8
https://github.com/rkt/rkt/blob/0c8765619cae3391a9ffa12c8dbd12ba7a475eb8/pkg/pod/pods.go#L1125-L1136
train
rkt/rkt
pkg/pod/pods.go
JournalLogPath
func (p *Pod) JournalLogPath() (string, error) { stage1RootfsPath, err := p.Stage1RootfsPath() if err != nil { return "", err } return filepath.Join(stage1RootfsPath, "/var/log/journal/"), nil }
go
func (p *Pod) JournalLogPath() (string, error) { stage1RootfsPath, err := p.Stage1RootfsPath() if err != nil { return "", err } return filepath.Join(stage1RootfsPath, "/var/log/journal/"), nil }
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// JournalLogPath returns the path to the journal log dir of the pod.
[ "JournalLogPath", "returns", "the", "path", "to", "the", "journal", "log", "dir", "of", "the", "pod", "." ]
0c8765619cae3391a9ffa12c8dbd12ba7a475eb8
https://github.com/rkt/rkt/blob/0c8765619cae3391a9ffa12c8dbd12ba7a475eb8/pkg/pod/pods.go#L1139-L1145
train
rkt/rkt
pkg/pod/pods.go
State
func (p *Pod) State() string { switch { case p.isEmbryo: return Embryo case p.isPreparing: return Preparing case p.isAbortedPrepare: return AbortedPrepare case p.isPrepared: return Prepared case p.isDeleting: return Deleting case p.isExitedDeleting: return ExitedDeleting case p.isExited: // this covers p.isExitedGarbage if p.isExitedGarbage { return ExitedGarbage } return Exited case p.isGarbage: return Garbage } return Running }
go
func (p *Pod) State() string { switch { case p.isEmbryo: return Embryo case p.isPreparing: return Preparing case p.isAbortedPrepare: return AbortedPrepare case p.isPrepared: return Prepared case p.isDeleting: return Deleting case p.isExitedDeleting: return ExitedDeleting case p.isExited: // this covers p.isExitedGarbage if p.isExitedGarbage { return ExitedGarbage } return Exited case p.isGarbage: return Garbage } return Running }
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// State returns the current state of the pod
[ "State", "returns", "the", "current", "state", "of", "the", "pod" ]
0c8765619cae3391a9ffa12c8dbd12ba7a475eb8
https://github.com/rkt/rkt/blob/0c8765619cae3391a9ffa12c8dbd12ba7a475eb8/pkg/pod/pods.go#L1148-L1172
train
rkt/rkt
pkg/pod/pods.go
isRunning
func (p *Pod) isRunning() bool { // when none of these things, running! return !p.isEmbryo && !p.isAbortedPrepare && !p.isPreparing && !p.isPrepared && !p.isExited && !p.isExitedGarbage && !p.isExitedDeleting && !p.isGarbage && !p.isDeleting && !p.isGone }
go
func (p *Pod) isRunning() bool { // when none of these things, running! return !p.isEmbryo && !p.isAbortedPrepare && !p.isPreparing && !p.isPrepared && !p.isExited && !p.isExitedGarbage && !p.isExitedDeleting && !p.isGarbage && !p.isDeleting && !p.isGone }
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// isRunning does the annoying tests to infer if a pod is in a running state
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0c8765619cae3391a9ffa12c8dbd12ba7a475eb8
https://github.com/rkt/rkt/blob/0c8765619cae3391a9ffa12c8dbd12ba7a475eb8/pkg/pod/pods.go#L1175-L1179
train
rkt/rkt
pkg/pod/pods.go
PodManifestAvailable
func (p *Pod) PodManifestAvailable() bool { if p.isPreparing || p.isAbortedPrepare || p.isDeleting { return false } return true }
go
func (p *Pod) PodManifestAvailable() bool { if p.isPreparing || p.isAbortedPrepare || p.isDeleting { return false } return true }
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// PodManifestAvailable returns whether the caller should reasonably expect // PodManifest to function in the pod's current state. // Namely, in Preparing, AbortedPrepare, and Deleting it's possible for the // manifest to not be present
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0c8765619cae3391a9ffa12c8dbd12ba7a475eb8
https://github.com/rkt/rkt/blob/0c8765619cae3391a9ffa12c8dbd12ba7a475eb8/pkg/pod/pods.go#L1185-L1190
train
rkt/rkt
pkg/pod/pods.go
IsAfterRun
func (p *Pod) IsAfterRun() bool { return p.isExitedDeleting || p.isDeleting || p.isExited || p.isGarbage }
go
func (p *Pod) IsAfterRun() bool { return p.isExitedDeleting || p.isDeleting || p.isExited || p.isGarbage }
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// IsAfterRun returns true if the pod is in a post-running state, otherwise it returns false.
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0c8765619cae3391a9ffa12c8dbd12ba7a475eb8
https://github.com/rkt/rkt/blob/0c8765619cae3391a9ffa12c8dbd12ba7a475eb8/pkg/pod/pods.go#L1193-L1195
train
rkt/rkt
pkg/pod/pods.go
IsFinished
func (p *Pod) IsFinished() bool { return p.isExited || p.isAbortedPrepare || p.isGarbage || p.isGone }
go
func (p *Pod) IsFinished() bool { return p.isExited || p.isAbortedPrepare || p.isGarbage || p.isGone }
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// IsFinished returns true if the pod is in a terminal state, else false.
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0c8765619cae3391a9ffa12c8dbd12ba7a475eb8
https://github.com/rkt/rkt/blob/0c8765619cae3391a9ffa12c8dbd12ba7a475eb8/pkg/pod/pods.go#L1198-L1200
train
rkt/rkt
pkg/pod/pods.go
AppExitCode
func (p *Pod) AppExitCode(appName string) (int, error) { stage1RootfsPath, err := p.Stage1RootfsPath() if err != nil { return -1, err } statusFile := common.AppStatusPathFromStage1Rootfs(stage1RootfsPath, appName) return p.readIntFromFile(statusFile) }
go
func (p *Pod) AppExitCode(appName string) (int, error) { stage1RootfsPath, err := p.Stage1RootfsPath() if err != nil { return -1, err } statusFile := common.AppStatusPathFromStage1Rootfs(stage1RootfsPath, appName) return p.readIntFromFile(statusFile) }
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// AppExitCode returns the app's exit code. // It returns an error if the exit code file doesn't exit or the content of the file is invalid.
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0c8765619cae3391a9ffa12c8dbd12ba7a475eb8
https://github.com/rkt/rkt/blob/0c8765619cae3391a9ffa12c8dbd12ba7a475eb8/pkg/pod/pods.go#L1209-L1217
train
rkt/rkt
stage0/stop.go
StopPod
func StopPod(dir string, force bool, uuid *types.UUID) error { s1rootfs := common.Stage1RootfsPath(dir) if err := os.Chdir(dir); err != nil { return fmt.Errorf("failed changing to dir: %v", err) } ep, err := getStage1Entrypoint(dir, stopEntrypoint) if err != nil { return fmt.Errorf("rkt stop not implemented for pod's stage1: %v", err) } args := []string{filepath.Join(s1rootfs, ep)} debug("Execing %s", ep) if force { args = append(args, "--force") } args = append(args, uuid.String()) c := exec.Cmd{ Path: args[0], Args: args, Stdout: os.Stdout, Stderr: os.Stderr, } return c.Run() }
go
func StopPod(dir string, force bool, uuid *types.UUID) error { s1rootfs := common.Stage1RootfsPath(dir) if err := os.Chdir(dir); err != nil { return fmt.Errorf("failed changing to dir: %v", err) } ep, err := getStage1Entrypoint(dir, stopEntrypoint) if err != nil { return fmt.Errorf("rkt stop not implemented for pod's stage1: %v", err) } args := []string{filepath.Join(s1rootfs, ep)} debug("Execing %s", ep) if force { args = append(args, "--force") } args = append(args, uuid.String()) c := exec.Cmd{ Path: args[0], Args: args, Stdout: os.Stdout, Stderr: os.Stderr, } return c.Run() }
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// StopPod stops the given pod.
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0c8765619cae3391a9ffa12c8dbd12ba7a475eb8
https://github.com/rkt/rkt/blob/0c8765619cae3391a9ffa12c8dbd12ba7a475eb8/stage0/stop.go#L31-L59
train
rkt/rkt
rkt/config/config.go
MarshalJSON
func (c *Config) MarshalJSON() ([]byte, error) { stage0 := []interface{}{} for host, auth := range c.AuthPerHost { var typ string var credentials interface{} switch h := auth.(type) { case *basicAuthHeaderer: typ = "basic" credentials = h.auth case *oAuthBearerTokenHeaderer: typ = "oauth" credentials = h.auth case *awsAuthHeaderer: typ = "aws" credentials = h.auth default: return nil, errors.New("unknown headerer type") } auth := struct { RktVersion string `json:"rktVersion"` RktKind string `json:"rktKind"` Domains []string `json:"domains"` Type string `json:"type"` Credentials interface{} `json:"credentials"` }{ RktVersion: "v1", RktKind: "auth", Domains: []string{host}, Type: typ, Credentials: credentials, } stage0 = append(stage0, auth) } for registry, credentials := range c.DockerCredentialsPerRegistry { dockerAuth := struct { RktVersion string `json:"rktVersion"` RktKind string `json:"rktKind"` Registries []string `json:"registries"` Credentials BasicCredentials `json:"credentials"` }{ RktVersion: "v1", RktKind: "dockerAuth", Registries: []string{registry}, Credentials: credentials, } stage0 = append(stage0, dockerAuth) } paths := struct { RktVersion string `json:"rktVersion"` RktKind string `json:"rktKind"` Data string `json:"data"` Stage1Images string `json:"stage1-images"` }{ RktVersion: "v1", RktKind: "paths", Data: c.Paths.DataDir, Stage1Images: c.Paths.Stage1ImagesDir, } stage1 := struct { RktVersion string `json:"rktVersion"` RktKind string `json:"rktKind"` Name string `json:"name"` Version string `json:"version"` Location string `json:"location"` }{ RktVersion: "v1", RktKind: "stage1", Name: c.Stage1.Name, Version: c.Stage1.Version, Location: c.Stage1.Location, } stage0 = append(stage0, paths, stage1) data := map[string]interface{}{"stage0": stage0} return json.Marshal(data) }
go
func (c *Config) MarshalJSON() ([]byte, error) { stage0 := []interface{}{} for host, auth := range c.AuthPerHost { var typ string var credentials interface{} switch h := auth.(type) { case *basicAuthHeaderer: typ = "basic" credentials = h.auth case *oAuthBearerTokenHeaderer: typ = "oauth" credentials = h.auth case *awsAuthHeaderer: typ = "aws" credentials = h.auth default: return nil, errors.New("unknown headerer type") } auth := struct { RktVersion string `json:"rktVersion"` RktKind string `json:"rktKind"` Domains []string `json:"domains"` Type string `json:"type"` Credentials interface{} `json:"credentials"` }{ RktVersion: "v1", RktKind: "auth", Domains: []string{host}, Type: typ, Credentials: credentials, } stage0 = append(stage0, auth) } for registry, credentials := range c.DockerCredentialsPerRegistry { dockerAuth := struct { RktVersion string `json:"rktVersion"` RktKind string `json:"rktKind"` Registries []string `json:"registries"` Credentials BasicCredentials `json:"credentials"` }{ RktVersion: "v1", RktKind: "dockerAuth", Registries: []string{registry}, Credentials: credentials, } stage0 = append(stage0, dockerAuth) } paths := struct { RktVersion string `json:"rktVersion"` RktKind string `json:"rktKind"` Data string `json:"data"` Stage1Images string `json:"stage1-images"` }{ RktVersion: "v1", RktKind: "paths", Data: c.Paths.DataDir, Stage1Images: c.Paths.Stage1ImagesDir, } stage1 := struct { RktVersion string `json:"rktVersion"` RktKind string `json:"rktKind"` Name string `json:"name"` Version string `json:"version"` Location string `json:"location"` }{ RktVersion: "v1", RktKind: "stage1", Name: c.Stage1.Name, Version: c.Stage1.Version, Location: c.Stage1.Location, } stage0 = append(stage0, paths, stage1) data := map[string]interface{}{"stage0": stage0} return json.Marshal(data) }
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// MarshalJSON marshals the config for user output.
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0c8765619cae3391a9ffa12c8dbd12ba7a475eb8
https://github.com/rkt/rkt/blob/0c8765619cae3391a9ffa12c8dbd12ba7a475eb8/rkt/config/config.go#L70-L154
train
rkt/rkt
rkt/config/config.go
ResolveAuthPerHost
func ResolveAuthPerHost(authPerHost map[string]Headerer) map[string]http.Header { hostHeaders := make(map[string]http.Header, len(authPerHost)) for k, v := range authPerHost { hostHeaders[k] = v.GetHeader() } return hostHeaders }
go
func ResolveAuthPerHost(authPerHost map[string]Headerer) map[string]http.Header { hostHeaders := make(map[string]http.Header, len(authPerHost)) for k, v := range authPerHost { hostHeaders[k] = v.GetHeader() } return hostHeaders }
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// ResolveAuthPerHost takes a map of strings to Headerer and resolves the // Headerers to http.Headers
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0c8765619cae3391a9ffa12c8dbd12ba7a475eb8
https://github.com/rkt/rkt/blob/0c8765619cae3391a9ffa12c8dbd12ba7a475eb8/rkt/config/config.go#L169-L175
train
rkt/rkt
rkt/config/config.go
GetConfigFrom
func GetConfigFrom(dirs ...string) (*Config, error) { cfg := newConfig() for _, cd := range dirs { subcfg, err := GetConfigFromDir(cd) if err != nil { return nil, err } mergeConfigs(cfg, subcfg) } return cfg, nil }
go
func GetConfigFrom(dirs ...string) (*Config, error) { cfg := newConfig() for _, cd := range dirs { subcfg, err := GetConfigFromDir(cd) if err != nil { return nil, err } mergeConfigs(cfg, subcfg) } return cfg, nil }
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// GetConfigFrom gets the Config instance with configuration taken // from given paths. Subsequent paths override settings from the // previous paths.
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0c8765619cae3391a9ffa12c8dbd12ba7a475eb8
https://github.com/rkt/rkt/blob/0c8765619cae3391a9ffa12c8dbd12ba7a475eb8/rkt/config/config.go#L235-L245
train
rkt/rkt
rkt/config/config.go
GetConfigFromDir
func GetConfigFromDir(dir string) (*Config, error) { subcfg := newConfig() if valid, err := validDir(dir); err != nil { return nil, err } else if !valid { return subcfg, nil } if err := readConfigDir(subcfg, dir); err != nil { return nil, err } return subcfg, nil }
go
func GetConfigFromDir(dir string) (*Config, error) { subcfg := newConfig() if valid, err := validDir(dir); err != nil { return nil, err } else if !valid { return subcfg, nil } if err := readConfigDir(subcfg, dir); err != nil { return nil, err } return subcfg, nil }
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// GetConfigFromDir gets the Config instance with configuration taken // from given directory.
[ "GetConfigFromDir", "gets", "the", "Config", "instance", "with", "configuration", "taken", "from", "given", "directory", "." ]
0c8765619cae3391a9ffa12c8dbd12ba7a475eb8
https://github.com/rkt/rkt/blob/0c8765619cae3391a9ffa12c8dbd12ba7a475eb8/rkt/config/config.go#L249-L260
train
rkt/rkt
common/environment.go
WriteEnvFile
func WriteEnvFile(env []string, uidRange *user.UidRange, envFilePath string) error { ef := bytes.Buffer{} for _, v := range env { fmt.Fprintf(&ef, "%s\n", v) } if err := os.MkdirAll(filepath.Dir(envFilePath), 0755); err != nil { return err } if err := ioutil.WriteFile(envFilePath, ef.Bytes(), 0644); err != nil { return err } if err := user.ShiftFiles([]string{envFilePath}, uidRange); err != nil { return err } return nil }
go
func WriteEnvFile(env []string, uidRange *user.UidRange, envFilePath string) error { ef := bytes.Buffer{} for _, v := range env { fmt.Fprintf(&ef, "%s\n", v) } if err := os.MkdirAll(filepath.Dir(envFilePath), 0755); err != nil { return err } if err := ioutil.WriteFile(envFilePath, ef.Bytes(), 0644); err != nil { return err } if err := user.ShiftFiles([]string{envFilePath}, uidRange); err != nil { return err } return nil }
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// WriteEnvFile creates an environment file for given app name. To // ensure the minimum required environment variables by the appc spec // are set to sensible defaults, env should be the result of calling // ComposeEnviron. The containing directory and its ancestors will be // created if necessary.
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0c8765619cae3391a9ffa12c8dbd12ba7a475eb8
https://github.com/rkt/rkt/blob/0c8765619cae3391a9ffa12c8dbd12ba7a475eb8/common/environment.go#L45-L65
train
rkt/rkt
common/environment.go
ComposeEnviron
func ComposeEnviron(env types.Environment) []string { var composed []string for dk, dv := range defaultEnv { if _, exists := env.Get(dk); !exists { composed = append(composed, fmt.Sprintf("%s=%s", dk, dv)) } } for _, e := range env { composed = append(composed, fmt.Sprintf("%s=%s", e.Name, e.Value)) } return composed }
go
func ComposeEnviron(env types.Environment) []string { var composed []string for dk, dv := range defaultEnv { if _, exists := env.Get(dk); !exists { composed = append(composed, fmt.Sprintf("%s=%s", dk, dv)) } } for _, e := range env { composed = append(composed, fmt.Sprintf("%s=%s", e.Name, e.Value)) } return composed }
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// ComposeEnviron formats the environment into a slice of strings, // each of the form "key=value". The minimum required environment // variables by the appc spec will be set to sensible defaults here if // they're not provided by env.
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0c8765619cae3391a9ffa12c8dbd12ba7a475eb8
https://github.com/rkt/rkt/blob/0c8765619cae3391a9ffa12c8dbd12ba7a475eb8/common/environment.go#L94-L107
train
rkt/rkt
pkg/fs/mount_linux.go
String
func (f mountFlags) String() string { var s []string maybeAppendFlag := func(ff uintptr, desc string) { if uintptr(f)&ff != 0 { s = append(s, desc) } } maybeAppendFlag(syscall.MS_DIRSYNC, "MS_DIRSYNC") maybeAppendFlag(syscall.MS_MANDLOCK, "MS_MANDLOCK") maybeAppendFlag(syscall.MS_NOATIME, "MS_NOATIME") maybeAppendFlag(syscall.MS_NODEV, "MS_NODEV") maybeAppendFlag(syscall.MS_NODIRATIME, "MS_NODIRATIME") maybeAppendFlag(syscall.MS_NOEXEC, "MS_NOEXEC") maybeAppendFlag(syscall.MS_NOSUID, "MS_NOSUID") maybeAppendFlag(syscall.MS_RDONLY, "MS_RDONLY") maybeAppendFlag(syscall.MS_REC, "MS_REC") maybeAppendFlag(syscall.MS_RELATIME, "MS_RELATIME") maybeAppendFlag(syscall.MS_SILENT, "MS_SILENT") maybeAppendFlag(syscall.MS_STRICTATIME, "MS_STRICTATIME") maybeAppendFlag(syscall.MS_SYNCHRONOUS, "MS_SYNCHRONOUS") maybeAppendFlag(syscall.MS_REMOUNT, "MS_REMOUNT") maybeAppendFlag(syscall.MS_BIND, "MS_BIND") maybeAppendFlag(syscall.MS_SHARED, "MS_SHARED") maybeAppendFlag(syscall.MS_PRIVATE, "MS_PRIVATE") maybeAppendFlag(syscall.MS_SLAVE, "MS_SLAVE") maybeAppendFlag(syscall.MS_UNBINDABLE, "MS_UNBINDABLE") maybeAppendFlag(syscall.MS_MOVE, "MS_MOVE") return strings.Join(s, "|") }
go
func (f mountFlags) String() string { var s []string maybeAppendFlag := func(ff uintptr, desc string) { if uintptr(f)&ff != 0 { s = append(s, desc) } } maybeAppendFlag(syscall.MS_DIRSYNC, "MS_DIRSYNC") maybeAppendFlag(syscall.MS_MANDLOCK, "MS_MANDLOCK") maybeAppendFlag(syscall.MS_NOATIME, "MS_NOATIME") maybeAppendFlag(syscall.MS_NODEV, "MS_NODEV") maybeAppendFlag(syscall.MS_NODIRATIME, "MS_NODIRATIME") maybeAppendFlag(syscall.MS_NOEXEC, "MS_NOEXEC") maybeAppendFlag(syscall.MS_NOSUID, "MS_NOSUID") maybeAppendFlag(syscall.MS_RDONLY, "MS_RDONLY") maybeAppendFlag(syscall.MS_REC, "MS_REC") maybeAppendFlag(syscall.MS_RELATIME, "MS_RELATIME") maybeAppendFlag(syscall.MS_SILENT, "MS_SILENT") maybeAppendFlag(syscall.MS_STRICTATIME, "MS_STRICTATIME") maybeAppendFlag(syscall.MS_SYNCHRONOUS, "MS_SYNCHRONOUS") maybeAppendFlag(syscall.MS_REMOUNT, "MS_REMOUNT") maybeAppendFlag(syscall.MS_BIND, "MS_BIND") maybeAppendFlag(syscall.MS_SHARED, "MS_SHARED") maybeAppendFlag(syscall.MS_PRIVATE, "MS_PRIVATE") maybeAppendFlag(syscall.MS_SLAVE, "MS_SLAVE") maybeAppendFlag(syscall.MS_UNBINDABLE, "MS_UNBINDABLE") maybeAppendFlag(syscall.MS_MOVE, "MS_MOVE") return strings.Join(s, "|") }
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// String returns a human readable representation of mountFlags based on which bits are set. // E.g. for a value of syscall.MS_RDONLY|syscall.MS_BIND it will print "MS_RDONLY|MS_BIND"
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0c8765619cae3391a9ffa12c8dbd12ba7a475eb8
https://github.com/rkt/rkt/blob/0c8765619cae3391a9ffa12c8dbd12ba7a475eb8/pkg/fs/mount_linux.go#L26-L57
train
rkt/rkt
rkt/image/validator.go
newValidator
func newValidator(image io.ReadSeeker) (*validator, error) { manifest, err := aci.ManifestFromImage(image) if err != nil { return nil, err } v := &validator{ image: image, manifest: manifest, } return v, nil }
go
func newValidator(image io.ReadSeeker) (*validator, error) { manifest, err := aci.ManifestFromImage(image) if err != nil { return nil, err } v := &validator{ image: image, manifest: manifest, } return v, nil }
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// newValidator returns a validator instance if passed image is indeed // an ACI.
[ "newValidator", "returns", "a", "validator", "instance", "if", "passed", "image", "is", "indeed", "an", "ACI", "." ]
0c8765619cae3391a9ffa12c8dbd12ba7a475eb8
https://github.com/rkt/rkt/blob/0c8765619cae3391a9ffa12c8dbd12ba7a475eb8/rkt/image/validator.go#L40-L50
train
rkt/rkt
rkt/image/validator.go
ValidateName
func (v *validator) ValidateName(imageName string) error { name := v.ImageName() if name != imageName { return fmt.Errorf("error when reading the app name: %q expected but %q found", imageName, name) } return nil }
go
func (v *validator) ValidateName(imageName string) error { name := v.ImageName() if name != imageName { return fmt.Errorf("error when reading the app name: %q expected but %q found", imageName, name) } return nil }
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// ValidateName checks if desired image name is actually the same as // the one in the image manifest.
[ "ValidateName", "checks", "if", "desired", "image", "name", "is", "actually", "the", "same", "as", "the", "one", "in", "the", "image", "manifest", "." ]
0c8765619cae3391a9ffa12c8dbd12ba7a475eb8
https://github.com/rkt/rkt/blob/0c8765619cae3391a9ffa12c8dbd12ba7a475eb8/rkt/image/validator.go#L59-L66
train
rkt/rkt
rkt/image/validator.go
ValidateLabels
func (v *validator) ValidateLabels(labels map[types.ACIdentifier]string) error { for n, rv := range labels { if av, ok := v.manifest.GetLabel(n.String()); ok { if rv != av { return fmt.Errorf("requested value for label %q: %q differs from fetched aci label value: %q", n, rv, av) } } else { return fmt.Errorf("requested label %q not provided by the image manifest", n) } } return nil }
go
func (v *validator) ValidateLabels(labels map[types.ACIdentifier]string) error { for n, rv := range labels { if av, ok := v.manifest.GetLabel(n.String()); ok { if rv != av { return fmt.Errorf("requested value for label %q: %q differs from fetched aci label value: %q", n, rv, av) } } else { return fmt.Errorf("requested label %q not provided by the image manifest", n) } } return nil }
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// ValidateLabels checks if desired image labels are actually the same as // the ones in the image manifest.
[ "ValidateLabels", "checks", "if", "desired", "image", "labels", "are", "actually", "the", "same", "as", "the", "ones", "in", "the", "image", "manifest", "." ]
0c8765619cae3391a9ffa12c8dbd12ba7a475eb8
https://github.com/rkt/rkt/blob/0c8765619cae3391a9ffa12c8dbd12ba7a475eb8/rkt/image/validator.go#L70-L81
train
rkt/rkt
rkt/image/validator.go
ValidateWithSignature
func (v *validator) ValidateWithSignature(ks *keystore.Keystore, sig io.ReadSeeker) (*openpgp.Entity, error) { if ks == nil { return nil, nil } if _, err := v.image.Seek(0, 0); err != nil { return nil, errwrap.Wrap(errors.New("error seeking ACI file"), err) } if _, err := sig.Seek(0, 0); err != nil { return nil, errwrap.Wrap(errors.New("error seeking signature file"), err) } entity, err := ks.CheckSignature(v.ImageName(), v.image, sig) if err == pgperrors.ErrUnknownIssuer { log.Print("If you expected the signing key to change, try running:") log.Print(" rkt trust --prefix <image>") } if err != nil { return nil, err } return entity, nil }
go
func (v *validator) ValidateWithSignature(ks *keystore.Keystore, sig io.ReadSeeker) (*openpgp.Entity, error) { if ks == nil { return nil, nil } if _, err := v.image.Seek(0, 0); err != nil { return nil, errwrap.Wrap(errors.New("error seeking ACI file"), err) } if _, err := sig.Seek(0, 0); err != nil { return nil, errwrap.Wrap(errors.New("error seeking signature file"), err) } entity, err := ks.CheckSignature(v.ImageName(), v.image, sig) if err == pgperrors.ErrUnknownIssuer { log.Print("If you expected the signing key to change, try running:") log.Print(" rkt trust --prefix <image>") } if err != nil { return nil, err } return entity, nil }
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// ValidateWithSignature verifies the image against a given signature // file.
[ "ValidateWithSignature", "verifies", "the", "image", "against", "a", "given", "signature", "file", "." ]
0c8765619cae3391a9ffa12c8dbd12ba7a475eb8
https://github.com/rkt/rkt/blob/0c8765619cae3391a9ffa12c8dbd12ba7a475eb8/rkt/image/validator.go#L85-L104
train
rkt/rkt
pkg/distribution/distribution.go
Register
func Register(distType Type, f newDistribution) { if _, ok := distributions[distType]; ok { panic(fmt.Errorf("distribution %q already registered", distType)) } distributions[distType] = f }
go
func Register(distType Type, f newDistribution) { if _, ok := distributions[distType]; ok { panic(fmt.Errorf("distribution %q already registered", distType)) } distributions[distType] = f }
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// Register registers a function that returns a new instance of the given // distribution. This is intended to be called from the init function in // packages that implement distribution functions.
[ "Register", "registers", "a", "function", "that", "returns", "a", "new", "instance", "of", "the", "given", "distribution", ".", "This", "is", "intended", "to", "be", "called", "from", "the", "init", "function", "in", "packages", "that", "implement", "distribution", "functions", "." ]
0c8765619cae3391a9ffa12c8dbd12ba7a475eb8
https://github.com/rkt/rkt/blob/0c8765619cae3391a9ffa12c8dbd12ba7a475eb8/pkg/distribution/distribution.go#L47-L52
train
rkt/rkt
pkg/distribution/distribution.go
Get
func Get(u *url.URL) (Distribution, error) { c, err := parseCIMD(u) if err != nil { return nil, fmt.Errorf("malformed distribution uri %q: %v", u.String(), err) } if u.Scheme != Scheme { return nil, fmt.Errorf("malformed distribution uri %q", u.String()) } if _, ok := distributions[c.Type]; !ok { return nil, fmt.Errorf("unknown distribution type: %q", c.Type) } return distributions[c.Type](u) }
go
func Get(u *url.URL) (Distribution, error) { c, err := parseCIMD(u) if err != nil { return nil, fmt.Errorf("malformed distribution uri %q: %v", u.String(), err) } if u.Scheme != Scheme { return nil, fmt.Errorf("malformed distribution uri %q", u.String()) } if _, ok := distributions[c.Type]; !ok { return nil, fmt.Errorf("unknown distribution type: %q", c.Type) } return distributions[c.Type](u) }
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// Get returns a Distribution from the input URI. // It returns an error if the uri string is wrong or referencing an unknown // distribution type.
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0c8765619cae3391a9ffa12c8dbd12ba7a475eb8
https://github.com/rkt/rkt/blob/0c8765619cae3391a9ffa12c8dbd12ba7a475eb8/pkg/distribution/distribution.go#L57-L69
train
rkt/rkt
pkg/distribution/distribution.go
Parse
func Parse(rawuri string) (Distribution, error) { u, err := url.Parse(rawuri) if err != nil { return nil, fmt.Errorf("cannot parse uri: %q: %v", rawuri, err) } return Get(u) }
go
func Parse(rawuri string) (Distribution, error) { u, err := url.Parse(rawuri) if err != nil { return nil, fmt.Errorf("cannot parse uri: %q: %v", rawuri, err) } return Get(u) }
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// Parse parses the provided distribution URI string and returns a // Distribution.
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0c8765619cae3391a9ffa12c8dbd12ba7a475eb8
https://github.com/rkt/rkt/blob/0c8765619cae3391a9ffa12c8dbd12ba7a475eb8/pkg/distribution/distribution.go#L73-L79
train
rkt/rkt
rkt/completion.go
newCompletion
func newCompletion(w io.Writer) func(*cobra.Command, []string) int { return func(cmd *cobra.Command, args []string) int { return runCompletion(w, cmd, args) } }
go
func newCompletion(w io.Writer) func(*cobra.Command, []string) int { return func(cmd *cobra.Command, args []string) int { return runCompletion(w, cmd, args) } }
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// newCompletion creates a new command with a bounded writer. Writer // is used to print the generated shell-completion script, which is // intended to be consumed by the CLI users.
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0c8765619cae3391a9ffa12c8dbd12ba7a475eb8
https://github.com/rkt/rkt/blob/0c8765619cae3391a9ffa12c8dbd12ba7a475eb8/rkt/completion.go#L117-L121
train
rkt/rkt
rkt/completion.go
runCompletion
func runCompletion(w io.Writer, cmd *cobra.Command, args []string) (exit int) { if len(args) == 0 { stderr.Print("shell type is not specified") return 254 } if len(args) > 1 { stderr.Print("too many arguments, only shell type is expected") return 254 } // Right now only bash completion is supported, but zsh could be // supported in a future as well. completion, ok := completionShells[args[0]] if !ok { stderr.Printf("'%s' shell is not supported", args[0]) return 254 } // Write the shell completion to the specified writer. err := completion(w, cmd.Parent()) if err != nil { stderr.PrintE("completion failed", err) return 254 } return 0 }
go
func runCompletion(w io.Writer, cmd *cobra.Command, args []string) (exit int) { if len(args) == 0 { stderr.Print("shell type is not specified") return 254 } if len(args) > 1 { stderr.Print("too many arguments, only shell type is expected") return 254 } // Right now only bash completion is supported, but zsh could be // supported in a future as well. completion, ok := completionShells[args[0]] if !ok { stderr.Printf("'%s' shell is not supported", args[0]) return 254 } // Write the shell completion to the specified writer. err := completion(w, cmd.Parent()) if err != nil { stderr.PrintE("completion failed", err) return 254 } return 0 }
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// runCompletion is a command handler to generate the shell script with // shell completion functions. // // It ensures that there are enough arguments to generate the completion // scripts.
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0c8765619cae3391a9ffa12c8dbd12ba7a475eb8
https://github.com/rkt/rkt/blob/0c8765619cae3391a9ffa12c8dbd12ba7a475eb8/rkt/completion.go#L128-L155
train