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-rw-r--r--cmd/podman/networks/create.go4
-rw-r--r--cmd/podman/networks/list.go2
-rw-r--r--libpod/network/config.go (renamed from pkg/network/config.go)11
-rw-r--r--libpod/network/create.go195
-rw-r--r--libpod/network/devices.go (renamed from pkg/network/devices.go)0
-rw-r--r--libpod/network/files.go (renamed from pkg/network/files.go)0
-rw-r--r--libpod/network/ip.go (renamed from pkg/network/ip.go)0
-rw-r--r--libpod/network/lock.go26
-rw-r--r--libpod/network/netconflist.go (renamed from pkg/network/netconflist.go)0
-rw-r--r--libpod/network/netconflist_test.go (renamed from pkg/network/netconflist_test.go)0
-rw-r--r--libpod/network/network.go (renamed from pkg/network/network.go)10
-rw-r--r--libpod/network/network_test.go (renamed from pkg/network/network_test.go)0
-rw-r--r--libpod/network/subnet.go (renamed from pkg/network/subnet.go)0
-rw-r--r--libpod/network/subnet_test.go (renamed from pkg/network/subnet_test.go)0
-rw-r--r--pkg/api/handlers/compat/networks.go8
-rw-r--r--pkg/domain/infra/abi/network.go176
-rw-r--r--test/e2e/network_create_test.go2
17 files changed, 249 insertions, 185 deletions
diff --git a/cmd/podman/networks/create.go b/cmd/podman/networks/create.go
index 68a577ae1..17f39bd8b 100644
--- a/cmd/podman/networks/create.go
+++ b/cmd/podman/networks/create.go
@@ -7,7 +7,6 @@ import (
"github.com/containers/podman/v2/cmd/podman/registry"
"github.com/containers/podman/v2/libpod/define"
"github.com/containers/podman/v2/pkg/domain/entities"
- "github.com/containers/podman/v2/pkg/network"
"github.com/spf13/cobra"
"github.com/spf13/pflag"
)
@@ -56,9 +55,6 @@ func networkCreate(cmd *cobra.Command, args []string) error {
var (
name string
)
- if err := network.IsSupportedDriver(networkCreateOptions.Driver); err != nil {
- return err
- }
if len(args) > 0 {
if !define.NameRegex.MatchString(args[0]) {
return define.RegexError
diff --git a/cmd/podman/networks/list.go b/cmd/podman/networks/list.go
index b6fb2bb80..c53f50c9f 100644
--- a/cmd/podman/networks/list.go
+++ b/cmd/podman/networks/list.go
@@ -10,8 +10,8 @@ import (
"github.com/containers/podman/v2/cmd/podman/registry"
"github.com/containers/podman/v2/cmd/podman/validate"
+ "github.com/containers/podman/v2/libpod/network"
"github.com/containers/podman/v2/pkg/domain/entities"
- "github.com/containers/podman/v2/pkg/network"
"github.com/spf13/cobra"
"github.com/spf13/pflag"
)
diff --git a/pkg/network/config.go b/libpod/network/config.go
index 0115433e1..a08e684d8 100644
--- a/pkg/network/config.go
+++ b/libpod/network/config.go
@@ -3,6 +3,8 @@ package network
import (
"encoding/json"
"net"
+
+ "github.com/containers/storage/pkg/lockfile"
)
// TODO once the containers.conf file stuff is worked out, this should be modified
@@ -17,8 +19,17 @@ const (
// DefaultPodmanDomainName is used for the dnsname plugin to define
// a localized domain name for a created network
DefaultPodmanDomainName = "dns.podman"
+ // LockFileName is used for obtaining a lock and is appended
+ // to libpod's tmpdir in practice
+ LockFileName = "cni.lock"
)
+// CNILock is for preventing name collision and
+// unpredictable results when doing some CNI operations.
+type CNILock struct {
+ lockfile.Locker
+}
+
// GetDefaultPodmanNetwork outputs the default network for podman
func GetDefaultPodmanNetwork() (*net.IPNet, error) {
_, n, err := net.ParseCIDR("10.88.1.0/24")
diff --git a/libpod/network/create.go b/libpod/network/create.go
new file mode 100644
index 000000000..a9ed4c4ef
--- /dev/null
+++ b/libpod/network/create.go
@@ -0,0 +1,195 @@
+package network
+
+import (
+ "encoding/json"
+ "fmt"
+ "io/ioutil"
+ "os"
+ "path/filepath"
+
+ "github.com/containernetworking/cni/pkg/version"
+ "github.com/containers/podman/v2/libpod"
+ "github.com/containers/podman/v2/pkg/domain/entities"
+ "github.com/containers/podman/v2/pkg/util"
+ "github.com/pkg/errors"
+)
+
+func Create(name string, options entities.NetworkCreateOptions, r *libpod.Runtime) (*entities.NetworkCreateReport, error) {
+ var fileName string
+ if err := isSupportedDriver(options.Driver); err != nil {
+ return nil, err
+ }
+ config, err := r.GetConfig()
+ if err != nil {
+ return nil, err
+ }
+ // Acquire a lock for CNI
+ l, err := acquireCNILock(filepath.Join(config.Engine.TmpDir, LockFileName))
+ if err != nil {
+ return nil, err
+ }
+ defer l.releaseCNILock()
+ if len(options.MacVLAN) > 0 {
+ fileName, err = createMacVLAN(r, name, options)
+ } else {
+ fileName, err = createBridge(r, name, options)
+ }
+ if err != nil {
+ return nil, err
+ }
+ return &entities.NetworkCreateReport{Filename: fileName}, nil
+}
+
+// createBridge creates a CNI network
+func createBridge(r *libpod.Runtime, name string, options entities.NetworkCreateOptions) (string, error) {
+ isGateway := true
+ ipMasq := true
+ subnet := &options.Subnet
+ ipRange := options.Range
+ runtimeConfig, err := r.GetConfig()
+ if err != nil {
+ return "", err
+ }
+ // if range is provided, make sure it is "in" network
+ if subnet.IP != nil {
+ // if network is provided, does it conflict with existing CNI or live networks
+ err = ValidateUserNetworkIsAvailable(runtimeConfig, subnet)
+ } else {
+ // if no network is provided, figure out network
+ subnet, err = GetFreeNetwork(runtimeConfig)
+ }
+ if err != nil {
+ return "", err
+ }
+ gateway := options.Gateway
+ if gateway == nil {
+ // if no gateway is provided, provide it as first ip of network
+ gateway = CalcGatewayIP(subnet)
+ }
+ // if network is provided and if gateway is provided, make sure it is "in" network
+ if options.Subnet.IP != nil && options.Gateway != nil {
+ if !subnet.Contains(gateway) {
+ return "", errors.Errorf("gateway %s is not in valid for subnet %s", gateway.String(), subnet.String())
+ }
+ }
+ if options.Internal {
+ isGateway = false
+ ipMasq = false
+ }
+
+ // if a range is given, we need to ensure it is "in" the network range.
+ if options.Range.IP != nil {
+ if options.Subnet.IP == nil {
+ return "", errors.New("you must define a subnet range to define an ip-range")
+ }
+ firstIP, err := FirstIPInSubnet(&options.Range)
+ if err != nil {
+ return "", err
+ }
+ lastIP, err := LastIPInSubnet(&options.Range)
+ if err != nil {
+ return "", err
+ }
+ if !subnet.Contains(firstIP) || !subnet.Contains(lastIP) {
+ return "", errors.Errorf("the ip range %s does not fall within the subnet range %s", options.Range.String(), subnet.String())
+ }
+ }
+ bridgeDeviceName, err := GetFreeDeviceName(runtimeConfig)
+ if err != nil {
+ return "", err
+ }
+
+ if len(name) > 0 {
+ netNames, err := GetNetworkNamesFromFileSystem(runtimeConfig)
+ if err != nil {
+ return "", err
+ }
+ if util.StringInSlice(name, netNames) {
+ return "", errors.Errorf("the network name %s is already used", name)
+ }
+ } else {
+ // If no name is given, we give the name of the bridge device
+ name = bridgeDeviceName
+ }
+
+ ncList := NewNcList(name, version.Current())
+ var plugins []CNIPlugins
+ var routes []IPAMRoute
+
+ defaultRoute, err := NewIPAMDefaultRoute(IsIPv6(subnet.IP))
+ if err != nil {
+ return "", err
+ }
+ routes = append(routes, defaultRoute)
+ ipamConfig, err := NewIPAMHostLocalConf(subnet, routes, ipRange, gateway)
+ if err != nil {
+ return "", err
+ }
+
+ // TODO need to iron out the role of isDefaultGW and IPMasq
+ bridge := NewHostLocalBridge(bridgeDeviceName, isGateway, false, ipMasq, ipamConfig)
+ plugins = append(plugins, bridge)
+ plugins = append(plugins, NewPortMapPlugin())
+ plugins = append(plugins, NewFirewallPlugin())
+ // if we find the dnsname plugin, we add configuration for it
+ if HasDNSNamePlugin(runtimeConfig.Network.CNIPluginDirs) && !options.DisableDNS {
+ // Note: in the future we might like to allow for dynamic domain names
+ plugins = append(plugins, NewDNSNamePlugin(DefaultPodmanDomainName))
+ }
+ ncList["plugins"] = plugins
+ b, err := json.MarshalIndent(ncList, "", " ")
+ if err != nil {
+ return "", err
+ }
+ if err := os.MkdirAll(GetCNIConfDir(runtimeConfig), 0755); err != nil {
+ return "", err
+ }
+ cniPathName := filepath.Join(GetCNIConfDir(runtimeConfig), fmt.Sprintf("%s.conflist", name))
+ err = ioutil.WriteFile(cniPathName, b, 0644)
+ return cniPathName, err
+}
+
+func createMacVLAN(r *libpod.Runtime, name string, options entities.NetworkCreateOptions) (string, error) {
+ var (
+ plugins []CNIPlugins
+ )
+ liveNetNames, err := GetLiveNetworkNames()
+ if err != nil {
+ return "", err
+ }
+
+ config, err := r.GetConfig()
+ if err != nil {
+ return "", err
+ }
+
+ // Make sure the host-device exists
+ if !util.StringInSlice(options.MacVLAN, liveNetNames) {
+ return "", errors.Errorf("failed to find network interface %q", options.MacVLAN)
+ }
+ if len(name) > 0 {
+ netNames, err := GetNetworkNamesFromFileSystem(config)
+ if err != nil {
+ return "", err
+ }
+ if util.StringInSlice(name, netNames) {
+ return "", errors.Errorf("the network name %s is already used", name)
+ }
+ } else {
+ name, err = GetFreeDeviceName(config)
+ if err != nil {
+ return "", err
+ }
+ }
+ ncList := NewNcList(name, version.Current())
+ macvlan := NewMacVLANPlugin(options.MacVLAN)
+ plugins = append(plugins, macvlan)
+ ncList["plugins"] = plugins
+ b, err := json.MarshalIndent(ncList, "", " ")
+ if err != nil {
+ return "", err
+ }
+ cniPathName := filepath.Join(GetCNIConfDir(config), fmt.Sprintf("%s.conflist", name))
+ err = ioutil.WriteFile(cniPathName, b, 0644)
+ return cniPathName, err
+}
diff --git a/pkg/network/devices.go b/libpod/network/devices.go
index a5d23fae4..a5d23fae4 100644
--- a/pkg/network/devices.go
+++ b/libpod/network/devices.go
diff --git a/pkg/network/files.go b/libpod/network/files.go
index a2090491f..a2090491f 100644
--- a/pkg/network/files.go
+++ b/libpod/network/files.go
diff --git a/pkg/network/ip.go b/libpod/network/ip.go
index ba93a0d05..ba93a0d05 100644
--- a/pkg/network/ip.go
+++ b/libpod/network/ip.go
diff --git a/libpod/network/lock.go b/libpod/network/lock.go
new file mode 100644
index 000000000..0395359eb
--- /dev/null
+++ b/libpod/network/lock.go
@@ -0,0 +1,26 @@
+package network
+
+import (
+ "github.com/containers/storage"
+)
+
+// acquireCNILock gets a lock that should be used in create and
+// delete cases to avoid unwanted collisions in network names.
+// TODO this uses a file lock and should be converted to shared memory
+// when we have a more general shared memory lock in libpod
+func acquireCNILock(lockPath string) (*CNILock, error) {
+ l, err := storage.GetLockfile(lockPath)
+ if err != nil {
+ return nil, err
+ }
+ l.Lock()
+ cnilock := CNILock{
+ Locker: l,
+ }
+ return &cnilock, nil
+}
+
+// ReleaseCNILock unlocks the previously held lock
+func (l *CNILock) releaseCNILock() {
+ l.Unlock()
+}
diff --git a/pkg/network/netconflist.go b/libpod/network/netconflist.go
index 8187fdb39..8187fdb39 100644
--- a/pkg/network/netconflist.go
+++ b/libpod/network/netconflist.go
diff --git a/pkg/network/netconflist_test.go b/libpod/network/netconflist_test.go
index 5893bf985..5893bf985 100644
--- a/pkg/network/netconflist_test.go
+++ b/libpod/network/netconflist_test.go
diff --git a/pkg/network/network.go b/libpod/network/network.go
index c4c1ff67f..7327a1a7d 100644
--- a/pkg/network/network.go
+++ b/libpod/network/network.go
@@ -4,6 +4,7 @@ import (
"encoding/json"
"net"
"os"
+ "path/filepath"
"github.com/containernetworking/cni/pkg/types"
"github.com/containernetworking/plugins/plugins/ipam/host-local/backend/allocator"
@@ -20,8 +21,8 @@ var DefaultNetworkDriver = "bridge"
// SupportedNetworkDrivers describes the list of supported drivers
var SupportedNetworkDrivers = []string{DefaultNetworkDriver}
-// IsSupportedDriver checks if the user provided driver is supported
-func IsSupportedDriver(driver string) error {
+// isSupportedDriver checks if the user provided driver is supported
+func isSupportedDriver(driver string) error {
if util.StringInSlice(driver, SupportedNetworkDrivers) {
return nil
}
@@ -168,6 +169,11 @@ func ValidateUserNetworkIsAvailable(config *config.Config, userNet *net.IPNet) e
// RemoveNetwork removes a given network by name. If the network has container associated with it, that
// must be handled outside the context of this.
func RemoveNetwork(config *config.Config, name string) error {
+ l, err := acquireCNILock(filepath.Join(config.Engine.TmpDir, LockFileName))
+ if err != nil {
+ return err
+ }
+ defer l.releaseCNILock()
cniPath, err := GetCNIConfigPathByName(config, name)
if err != nil {
return err
diff --git a/pkg/network/network_test.go b/libpod/network/network_test.go
index 1969e792c..1969e792c 100644
--- a/pkg/network/network_test.go
+++ b/libpod/network/network_test.go
diff --git a/pkg/network/subnet.go b/libpod/network/subnet.go
index 90f0cdfce..90f0cdfce 100644
--- a/pkg/network/subnet.go
+++ b/libpod/network/subnet.go
diff --git a/pkg/network/subnet_test.go b/libpod/network/subnet_test.go
index 917c3be88..917c3be88 100644
--- a/pkg/network/subnet_test.go
+++ b/libpod/network/subnet_test.go
diff --git a/pkg/api/handlers/compat/networks.go b/pkg/api/handlers/compat/networks.go
index c5387b1e9..a46784a6c 100644
--- a/pkg/api/handlers/compat/networks.go
+++ b/pkg/api/handlers/compat/networks.go
@@ -12,10 +12,10 @@ import (
"github.com/containernetworking/cni/libcni"
"github.com/containers/podman/v2/libpod"
"github.com/containers/podman/v2/libpod/define"
+ "github.com/containers/podman/v2/libpod/network"
"github.com/containers/podman/v2/pkg/api/handlers/utils"
"github.com/containers/podman/v2/pkg/domain/entities"
"github.com/containers/podman/v2/pkg/domain/infra/abi"
- "github.com/containers/podman/v2/pkg/network"
"github.com/docker/docker/api/types"
dockerNetwork "github.com/docker/docker/api/types/network"
"github.com/gorilla/schema"
@@ -210,6 +210,7 @@ func ListNetworks(w http.ResponseWriter, r *http.Request) {
report, err := getNetworkResourceByName(name, runtime)
if err != nil {
utils.InternalServerError(w, err)
+ return
}
reports = append(reports, report)
}
@@ -267,9 +268,9 @@ func CreateNetwork(w http.ResponseWriter, r *http.Request) {
}
}
ce := abi.ContainerEngine{Libpod: runtime}
- _, err := ce.NetworkCreate(r.Context(), name, ncOptions)
- if err != nil {
+ if _, err := ce.NetworkCreate(r.Context(), name, ncOptions); err != nil {
utils.InternalServerError(w, err)
+ return
}
report := types.NetworkCreate{
CheckDuplicate: networkCreate.CheckDuplicate,
@@ -307,6 +308,7 @@ func RemoveNetwork(w http.ResponseWriter, r *http.Request) {
}
if err := network.RemoveNetwork(config, name); err != nil {
utils.InternalServerError(w, err)
+ return
}
utils.WriteResponse(w, http.StatusNoContent, "")
}
diff --git a/pkg/domain/infra/abi/network.go b/pkg/domain/infra/abi/network.go
index 5acfea853..f40df828a 100644
--- a/pkg/domain/infra/abi/network.go
+++ b/pkg/domain/infra/abi/network.go
@@ -2,19 +2,13 @@ package abi
import (
"context"
- "encoding/json"
"fmt"
- "io/ioutil"
- "os"
- "path/filepath"
"strings"
"github.com/containernetworking/cni/libcni"
- cniversion "github.com/containernetworking/cni/pkg/version"
- "github.com/containers/podman/v2/libpod"
"github.com/containers/podman/v2/libpod/define"
+ "github.com/containers/podman/v2/libpod/network"
"github.com/containers/podman/v2/pkg/domain/entities"
- "github.com/containers/podman/v2/pkg/network"
"github.com/containers/podman/v2/pkg/util"
"github.com/pkg/errors"
)
@@ -111,173 +105,7 @@ func (ic *ContainerEngine) NetworkRm(ctx context.Context, namesOrIds []string, o
}
func (ic *ContainerEngine) NetworkCreate(ctx context.Context, name string, options entities.NetworkCreateOptions) (*entities.NetworkCreateReport, error) {
- var (
- err error
- fileName string
- )
- if len(options.MacVLAN) > 0 {
- fileName, err = createMacVLAN(ic.Libpod, name, options)
- } else {
- fileName, err = createBridge(ic.Libpod, name, options)
- }
- if err != nil {
- return nil, err
- }
- return &entities.NetworkCreateReport{Filename: fileName}, nil
-}
-
-// createBridge creates a CNI network
-func createBridge(r *libpod.Runtime, name string, options entities.NetworkCreateOptions) (string, error) {
- isGateway := true
- ipMasq := true
- subnet := &options.Subnet
- ipRange := options.Range
- runtimeConfig, err := r.GetConfig()
- if err != nil {
- return "", err
- }
- // if range is provided, make sure it is "in" network
- if subnet.IP != nil {
- // if network is provided, does it conflict with existing CNI or live networks
- err = network.ValidateUserNetworkIsAvailable(runtimeConfig, subnet)
- } else {
- // if no network is provided, figure out network
- subnet, err = network.GetFreeNetwork(runtimeConfig)
- }
- if err != nil {
- return "", err
- }
- gateway := options.Gateway
- if gateway == nil {
- // if no gateway is provided, provide it as first ip of network
- gateway = network.CalcGatewayIP(subnet)
- }
- // if network is provided and if gateway is provided, make sure it is "in" network
- if options.Subnet.IP != nil && options.Gateway != nil {
- if !subnet.Contains(gateway) {
- return "", errors.Errorf("gateway %s is not in valid for subnet %s", gateway.String(), subnet.String())
- }
- }
- if options.Internal {
- isGateway = false
- ipMasq = false
- }
-
- // if a range is given, we need to ensure it is "in" the network range.
- if options.Range.IP != nil {
- if options.Subnet.IP == nil {
- return "", errors.New("you must define a subnet range to define an ip-range")
- }
- firstIP, err := network.FirstIPInSubnet(&options.Range)
- if err != nil {
- return "", err
- }
- lastIP, err := network.LastIPInSubnet(&options.Range)
- if err != nil {
- return "", err
- }
- if !subnet.Contains(firstIP) || !subnet.Contains(lastIP) {
- return "", errors.Errorf("the ip range %s does not fall within the subnet range %s", options.Range.String(), subnet.String())
- }
- }
- bridgeDeviceName, err := network.GetFreeDeviceName(runtimeConfig)
- if err != nil {
- return "", err
- }
-
- if len(name) > 0 {
- netNames, err := network.GetNetworkNamesFromFileSystem(runtimeConfig)
- if err != nil {
- return "", err
- }
- if util.StringInSlice(name, netNames) {
- return "", errors.Errorf("the network name %s is already used", name)
- }
- } else {
- // If no name is given, we give the name of the bridge device
- name = bridgeDeviceName
- }
-
- ncList := network.NewNcList(name, cniversion.Current())
- var plugins []network.CNIPlugins
- var routes []network.IPAMRoute
-
- defaultRoute, err := network.NewIPAMDefaultRoute(network.IsIPv6(subnet.IP))
- if err != nil {
- return "", err
- }
- routes = append(routes, defaultRoute)
- ipamConfig, err := network.NewIPAMHostLocalConf(subnet, routes, ipRange, gateway)
- if err != nil {
- return "", err
- }
-
- // TODO need to iron out the role of isDefaultGW and IPMasq
- bridge := network.NewHostLocalBridge(bridgeDeviceName, isGateway, false, ipMasq, ipamConfig)
- plugins = append(plugins, bridge)
- plugins = append(plugins, network.NewPortMapPlugin())
- plugins = append(plugins, network.NewFirewallPlugin())
- // if we find the dnsname plugin, we add configuration for it
- if network.HasDNSNamePlugin(runtimeConfig.Network.CNIPluginDirs) && !options.DisableDNS {
- // Note: in the future we might like to allow for dynamic domain names
- plugins = append(plugins, network.NewDNSNamePlugin(network.DefaultPodmanDomainName))
- }
- ncList["plugins"] = plugins
- b, err := json.MarshalIndent(ncList, "", " ")
- if err != nil {
- return "", err
- }
- if err := os.MkdirAll(network.GetCNIConfDir(runtimeConfig), 0755); err != nil {
- return "", err
- }
- cniPathName := filepath.Join(network.GetCNIConfDir(runtimeConfig), fmt.Sprintf("%s.conflist", name))
- err = ioutil.WriteFile(cniPathName, b, 0644)
- return cniPathName, err
-}
-
-func createMacVLAN(r *libpod.Runtime, name string, options entities.NetworkCreateOptions) (string, error) {
- var (
- plugins []network.CNIPlugins
- )
- liveNetNames, err := network.GetLiveNetworkNames()
- if err != nil {
- return "", err
- }
-
- config, err := r.GetConfig()
- if err != nil {
- return "", err
- }
-
- // Make sure the host-device exists
- if !util.StringInSlice(options.MacVLAN, liveNetNames) {
- return "", errors.Errorf("failed to find network interface %q", options.MacVLAN)
- }
- if len(name) > 0 {
- netNames, err := network.GetNetworkNamesFromFileSystem(config)
- if err != nil {
- return "", err
- }
- if util.StringInSlice(name, netNames) {
- return "", errors.Errorf("the network name %s is already used", name)
- }
- } else {
- name, err = network.GetFreeDeviceName(config)
- if err != nil {
- return "", err
- }
- }
- ncList := network.NewNcList(name, cniversion.Current())
- macvlan := network.NewMacVLANPlugin(options.MacVLAN)
- plugins = append(plugins, macvlan)
- ncList["plugins"] = plugins
- b, err := json.MarshalIndent(ncList, "", " ")
- if err != nil {
- return "", err
- }
- cniPathName := filepath.Join(network.GetCNIConfDir(config), fmt.Sprintf("%s.conflist", name))
- err = ioutil.WriteFile(cniPathName, b, 0644)
- return cniPathName, err
+ return network.Create(name, options, ic.Libpod)
}
func ifPassesFilterTest(netconf *libcni.NetworkConfigList, filter []string) bool {
diff --git a/test/e2e/network_create_test.go b/test/e2e/network_create_test.go
index edd76739f..5c5895537 100644
--- a/test/e2e/network_create_test.go
+++ b/test/e2e/network_create_test.go
@@ -8,7 +8,7 @@ import (
"strings"
cniversion "github.com/containernetworking/cni/pkg/version"
- "github.com/containers/podman/v2/pkg/network"
+ "github.com/containers/podman/v2/libpod/network"
. "github.com/containers/podman/v2/test/utils"
. "github.com/onsi/ginkgo"
. "github.com/onsi/gomega"
generated by cgit v1.2.3-54-g00ecf (git 2.39.0) at 2024-11-05 22:21:31 +0000