diff --git a/agent/engine/docker_task_engine.go b/agent/engine/docker_task_engine.go index 64c14141a93..f43b372f01c 100644 --- a/agent/engine/docker_task_engine.go +++ b/agent/engine/docker_task_engine.go @@ -111,7 +111,11 @@ const ( stopContainerMaxRetryCount = 5 ) -var newExponentialBackoff = retry.NewExponentialBackoff +var ( + newExponentialBackoff = retry.NewExponentialBackoff + + serviceConnectAppnetAgenTarballDir = "/var/lib/ecs/deps/serviceconnect/" +) // DockerTaskEngine is a state machine for managing a task and its containers // in ECS. @@ -281,6 +285,7 @@ func (engine *DockerTaskEngine) Init(ctx context.Context) error { go engine.handleDockerEvents(derivedCtx) engine.initialized = true go engine.startPeriodicExecAgentsMonitoring(derivedCtx) + go engine.watchAppNetImage(engine.ctx, serviceConnectAppnetAgenTarballDir) return nil } diff --git a/agent/engine/docker_task_engine_linux.go b/agent/engine/docker_task_engine_linux.go index 56298a6bac1..7d095951c68 100644 --- a/agent/engine/docker_task_engine_linux.go +++ b/agent/engine/docker_task_engine_linux.go @@ -17,8 +17,14 @@ package engine import ( + "context" "time" + apitaskstatus "github.com/aws/amazon-ecs-agent/agent/api/task/status" + + "github.com/cihub/seelog" + "github.com/fsnotify/fsnotify" + apicontainer "github.com/aws/amazon-ecs-agent/agent/api/container" apitask "github.com/aws/amazon-ecs-agent/agent/api/task" ) @@ -39,3 +45,77 @@ func (engine *DockerTaskEngine) updateTaskENIDependencies(task *apitask.Task) { func (engine *DockerTaskEngine) invokePluginsForContainer(task *apitask.Task, container *apicontainer.Container) error { return nil } + +func (engine *DockerTaskEngine) watchAppNetImage(ctx context.Context, filepath string) { + watcher, err := fsnotify.NewWatcher() + if err != nil { + seelog.Errorf("failed to initialize fsnotify NewWatcher, error: %v", err) + } + defer watcher.Close() + + // Start listening for events. + go func() { + for { + select { + case event, ok := <-watcher.Events: + if !ok { + return + } + const writeOrCreateMask = fsnotify.Write | fsnotify.Create + if event.Op&writeOrCreateMask != 0 { + seelog.Debugf("new fsnotify watcher event: %s", event.Name) + // reload the updated Appnet Agent image + if err = engine.reloadAppNetImage(); err != nil { + return + } + // restart the internal instance relay task with + // updated Appnet Agent image + engine.restartInstanceTask() + } + case err, ok := <-watcher.Errors: + if !ok { + return + } + seelog.Error("fsnotify watcher error: %v", err) + } + } + }() + + err = watcher.Add(filepath) + if err != nil { + seelog.Errorf("error adding %s to fsnotify watcher, error: %v", filepath, err) + } + <-make(chan struct{}) +} + +func (engine *DockerTaskEngine) reloadAppNetImage() error { + _, err := engine.serviceconnectManager.LoadImage(engine.ctx, engine.cfg, engine.client) + if err != nil { + seelog.Errorf("engine: Failed to reload appnet Agent container, error: %v", err) + return err + } + return nil +} + +func (engine *DockerTaskEngine) restartInstanceTask() { + if engine.serviceconnectRelay != nil { + serviceconnectRelayTask, err := engine.serviceconnectManager.CreateInstanceTask(engine.cfg) + if err != nil { + seelog.Errorf("Unable to start relay for task in the engine: %v", err) + return + } + // clean up instance relay task + for _, container := range engine.serviceconnectRelay.Containers { + if container.Type == apicontainer.ContainerServiceConnectRelay { + engine.stopContainer(engine.serviceconnectRelay, container) + } + } + engine.serviceconnectRelay.SetDesiredStatus(apitaskstatus.TaskStopped) + engine.sweepTask(engine.serviceconnectRelay) + engine.deleteTask(engine.serviceconnectRelay) + + engine.serviceconnectRelay = serviceconnectRelayTask + engine.AddTask(engine.serviceconnectRelay) + seelog.Info("engine: Restarted AppNet Relay task") + } +} diff --git a/agent/engine/docker_task_engine_linux_test.go b/agent/engine/docker_task_engine_linux_test.go index 5068fe3394a..ef719449d84 100644 --- a/agent/engine/docker_task_engine_linux_test.go +++ b/agent/engine/docker_task_engine_linux_test.go @@ -20,6 +20,7 @@ import ( "encoding/json" "errors" "fmt" + "os" "strconv" "strings" "sync" @@ -1364,3 +1365,27 @@ func TestProvisionContainerResourcesBridgeModeWithServiceConnect(t *testing.T) { require.Nil(t, taskEngine.(*DockerTaskEngine).provisionContainerResources(testTask, cont).Error) } } + +func TestWatchAppNetImage(t *testing.T) { + ctx, cancel := context.WithCancel(context.TODO()) + defer cancel() + ctrl, _, _, taskEngine, _, _, _, serviceConnectManager := mocks(t, ctx, &defaultConfig) + defer ctrl.Finish() + + oServiceConnectAppnetAgenTarballDir := serviceConnectAppnetAgenTarballDir + serviceConnectAppnetAgenTarballDir = "/tmp/serviceconnect/" + defer func() { + serviceConnectAppnetAgenTarballDir = oServiceConnectAppnetAgenTarballDir + }() + + serviceConnectManager.EXPECT().LoadImage(gomock.Any(), gomock.Any(), gomock.Any()).AnyTimes() + watcherCtx, watcherCancel := context.WithTimeout(context.Background(), time.Second) + defer watcherCancel() + go taskEngine.(*DockerTaskEngine).watchAppNetImage(ctx, serviceConnectAppnetAgenTarballDir) + <-watcherCtx.Done() + + err := os.MkdirAll(serviceConnectAppnetAgenTarballDir, os.ModeDir) + assert.NoError(t, err) + _, createErr := os.Create(serviceConnectAppnetAgenTarballDir + "appnet.tar") + assert.NoError(t, createErr) +} diff --git a/agent/engine/docker_task_engine_unsupported.go b/agent/engine/docker_task_engine_unsupported.go index c59db83fcfb..cbc747aed92 100644 --- a/agent/engine/docker_task_engine_unsupported.go +++ b/agent/engine/docker_task_engine_unsupported.go @@ -17,6 +17,7 @@ package engine import ( + "context" "time" apicontainer "github.com/aws/amazon-ecs-agent/agent/api/container" @@ -39,3 +40,18 @@ func (engine *DockerTaskEngine) updateTaskENIDependencies(task *apitask.Task) { func (engine *DockerTaskEngine) invokePluginsForContainer(task *apitask.Task, container *apicontainer.Container) error { return nil } + +// watchAppNetImage is a file watcher, if there is any change/update to AppNet image +// we reload the image and restart the relay instance task with updated AppNet image. +func (engine *DockerTaskEngine) watchAppNetImage(ctx context.Context, filepath string) { +} + +// reloadAppNetImage reloads the new AppNet image for service connect +func (engine *DockerTaskEngine) reloadAppNetImage() error { + return nil +} + +// restartInstanceTask stop the running internal relay task and starts a new one +// with updated AppNet image +func (engine *DockerTaskEngine) restartInstanceTask() { +} diff --git a/agent/engine/docker_task_engine_windows.go b/agent/engine/docker_task_engine_windows.go index 326e2cacf4a..1039aabe4b9 100644 --- a/agent/engine/docker_task_engine_windows.go +++ b/agent/engine/docker_task_engine_windows.go @@ -17,6 +17,7 @@ package engine import ( + "context" "time" apicontainer "github.com/aws/amazon-ecs-agent/agent/api/container" @@ -65,3 +66,13 @@ func (engine *DockerTaskEngine) invokePluginsForContainer(task *apitask.Task, co return nil } + +func (engine *DockerTaskEngine) watchAppNetImage(ctx context.Context, filepath string) { +} + +func (engine *DockerTaskEngine) reloadAppNetImage() error { + return nil +} + +func (engine *DockerTaskEngine) restartInstanceTask() { +} diff --git a/agent/engine/serviceconnect/manager_linux.go b/agent/engine/serviceconnect/manager_linux.go index 409f1bff36d..8945de5ee81 100644 --- a/agent/engine/serviceconnect/manager_linux.go +++ b/agent/engine/serviceconnect/manager_linux.go @@ -387,9 +387,9 @@ func (agent *manager) LoadImage(ctx context.Context, _ *config.Config, dockerCli }) continue } - logger.Debug(fmt.Sprintf("Loading appnet agent container tarball: %s", agentContainerTarballPath)) + logger.Debug(fmt.Sprintf("Loading Appnet agent container tarball: %s", agentContainerTarballPath)) if loadErr = loader.LoadFromFile(ctx, agentContainerTarballPath, dockerClient); loadErr != nil { - logger.Warn(fmt.Sprintf("Unable to load appnet agent container tarball: %s", agentContainerTarballPath), + logger.Warn(fmt.Sprintf("Unable to load Appnet agent container tarball: %s", agentContainerTarballPath), logger.Fields{ field.Error: loadErr, }) @@ -397,7 +397,7 @@ func (agent *manager) LoadImage(ctx context.Context, _ *config.Config, dockerCli } agent.setLoadedAppnetVerion(supportedAppnetInterfaceVersion) imageName, _ := agent.GetLoadedImageName() - logger.Info(fmt.Sprintf("Successfully loaded appnet agent container tarball: %s", agentContainerTarballPath), + logger.Info(fmt.Sprintf("Successfully loaded Appnet agent container tarball: %s", agentContainerTarballPath), logger.Fields{ field.Image: imageName, }) diff --git a/agent/go.mod b/agent/go.mod index 9379bb670a7..ed8b66d415c 100644 --- a/agent/go.mod +++ b/agent/go.mod @@ -18,6 +18,7 @@ require ( github.com/docker/docker v0.0.0-20200531234253-77e06fda0c94 github.com/docker/go-connections v0.4.0 github.com/docker/go-units v0.4.0 + github.com/fsnotify/fsnotify v1.5.4 github.com/godbus/dbus/v5 v5.0.6 // indirect github.com/golang/mock v1.1.1 github.com/google/go-cmp v0.5.6 // indirect @@ -34,13 +35,13 @@ require ( github.com/pkg/errors v0.9.1 github.com/prometheus/client_golang v0.9.4 github.com/prometheus/client_model v0.0.0-20190812154241-14fe0d1b01d4 - github.com/prometheus/procfs v0.6.0 // indirect github.com/prometheus/common v0.4.1 + github.com/prometheus/procfs v0.6.0 // indirect github.com/stretchr/testify v1.7.0 github.com/vishvananda/netlink v1.1.0 go.etcd.io/bbolt v1.3.6 golang.org/x/net v0.0.0-20210525063256-abc453219eb5 - golang.org/x/sys v0.0.0-20210510120138-977fb7262007 + golang.org/x/sys v0.0.0-20220412211240-33da011f77ad golang.org/x/text v0.3.6 // indirect golang.org/x/time v0.0.0-20170927054726-6dc17368e09b // indirect golang.org/x/tools v0.1.5 diff --git a/agent/go.sum b/agent/go.sum index 34d5511c02b..485118107de 100644 --- a/agent/go.sum +++ b/agent/go.sum @@ -66,6 +66,8 @@ github.com/envoyproxy/go-control-plane v0.9.9-0.20210217033140-668b12f5399d/go.m github.com/envoyproxy/protoc-gen-validate v0.1.0/go.mod h1:iSmxcyjqTsJpI2R4NaDN7+kN2VEUnK/pcBlmesArF7c= github.com/frankban/quicktest v1.11.3 h1:8sXhOn0uLys67V8EsXLc6eszDs8VXWxL3iRvebPhedY= github.com/frankban/quicktest v1.11.3/go.mod h1:wRf/ReqHper53s+kmmSZizM8NamnL3IM0I9ntUbOk+k= +github.com/fsnotify/fsnotify v1.5.4 h1:jRbGcIw6P2Meqdwuo0H1p6JVLbL5DHKAKlYndzMwVZI= +github.com/fsnotify/fsnotify v1.5.4/go.mod h1:OVB6XrOHzAwXMpEM7uPOzcehqUV2UqJxmVXmkdnm1bU= github.com/go-kit/kit v0.8.0/go.mod h1:xBxKIO96dXMWWy0MnWVtmwkA9/13aqxPnvrjFYMA2as= github.com/go-logfmt/logfmt v0.3.0/go.mod h1:Qt1PoO58o5twSAckw1HlFXLmHsOX5/0LbT9GBnD5lWE= github.com/go-stack/stack v1.8.0/go.mod h1:v0f6uXyyMGvRgIKkXu+yp6POWl0qKG85gN/melR3HDY= diff --git a/agent/utils/loader/load.go b/agent/utils/loader/load.go index 57054feec4d..8a4dd3c5baa 100644 --- a/agent/utils/loader/load.go +++ b/agent/utils/loader/load.go @@ -18,6 +18,8 @@ import ( "fmt" "os" + "github.com/aws/amazon-ecs-agent/agent/logger/field" + "github.com/aws/amazon-ecs-agent/agent/config" "github.com/aws/amazon-ecs-agent/agent/dockerclient" "github.com/aws/amazon-ecs-agent/agent/dockerclient/dockerapi" @@ -35,7 +37,7 @@ type Loader interface { // GetContainerImage This function uses the DockerClient to inspect the image with the given name and tag. func GetContainerImage(imageName string, dockerClient dockerapi.DockerClient) (*types.ImageInspect, error) { logger.Debug("Inspecting container image: ", logger.Fields{ - imageName: imageName, + field.Image: imageName, }) image, err := dockerClient.InspectImage(imageName) diff --git a/agent/vendor/github.com/fsnotify/fsnotify/.editorconfig b/agent/vendor/github.com/fsnotify/fsnotify/.editorconfig new file mode 100644 index 00000000000..fad895851e5 --- /dev/null +++ b/agent/vendor/github.com/fsnotify/fsnotify/.editorconfig @@ -0,0 +1,12 @@ +root = true + +[*.go] +indent_style = tab +indent_size = 4 +insert_final_newline = true + +[*.{yml,yaml}] +indent_style = space +indent_size = 2 +insert_final_newline = true +trim_trailing_whitespace = true diff --git a/agent/vendor/github.com/fsnotify/fsnotify/.gitattributes b/agent/vendor/github.com/fsnotify/fsnotify/.gitattributes new file mode 100644 index 00000000000..32f1001be0a --- /dev/null +++ b/agent/vendor/github.com/fsnotify/fsnotify/.gitattributes @@ -0,0 +1 @@ +go.sum linguist-generated diff --git a/agent/vendor/github.com/fsnotify/fsnotify/.gitignore b/agent/vendor/github.com/fsnotify/fsnotify/.gitignore new file mode 100644 index 00000000000..4cd0cbaf432 --- /dev/null +++ b/agent/vendor/github.com/fsnotify/fsnotify/.gitignore @@ -0,0 +1,6 @@ +# Setup a Global .gitignore for OS and editor generated files: +# https://help.github.com/articles/ignoring-files +# git config --global core.excludesfile ~/.gitignore_global + +.vagrant +*.sublime-project diff --git a/agent/vendor/github.com/fsnotify/fsnotify/.mailmap b/agent/vendor/github.com/fsnotify/fsnotify/.mailmap new file mode 100644 index 00000000000..a04f2907fed --- /dev/null +++ b/agent/vendor/github.com/fsnotify/fsnotify/.mailmap @@ -0,0 +1,2 @@ +Chris Howey +Nathan Youngman <4566+nathany@users.noreply.github.com> diff --git a/agent/vendor/github.com/fsnotify/fsnotify/AUTHORS b/agent/vendor/github.com/fsnotify/fsnotify/AUTHORS new file mode 100644 index 00000000000..6cbabe5ef50 --- /dev/null +++ b/agent/vendor/github.com/fsnotify/fsnotify/AUTHORS @@ -0,0 +1,62 @@ +# Names should be added to this file as +# Name or Organization +# The email address is not required for organizations. + +# You can update this list using the following command: +# +# $ (head -n10 AUTHORS && git shortlog -se | sed -E 's/^\s+[0-9]+\t//') | tee AUTHORS + +# Please keep the list sorted. + +Aaron L +Adrien Bustany +Alexey Kazakov +Amit Krishnan +Anmol Sethi +Bjørn Erik Pedersen +Brian Goff +Bruno Bigras +Caleb Spare +Case Nelson +Chris Howey +Christoffer Buchholz +Daniel Wagner-Hall +Dave Cheney +Eric Lin +Evan Phoenix +Francisco Souza +Gautam Dey +Hari haran +Ichinose Shogo +Johannes Ebke +John C Barstow +Kelvin Fo +Ken-ichirou MATSUZAWA +Matt Layher +Matthias Stone +Nathan Youngman +Nickolai Zeldovich +Oliver Bristow +Patrick +Paul Hammond +Pawel Knap +Pieter Droogendijk +Pratik Shinde +Pursuit92 +Riku Voipio +Rob Figueiredo +Rodrigo Chiossi +Slawek Ligus +Soge Zhang +Tiffany Jernigan +Tilak Sharma +Tobias Klauser +Tom Payne +Travis Cline +Tudor Golubenco +Vahe Khachikyan +Yukang +bronze1man +debrando +henrikedwards +铁哥 diff --git a/agent/vendor/github.com/fsnotify/fsnotify/CHANGELOG.md b/agent/vendor/github.com/fsnotify/fsnotify/CHANGELOG.md new file mode 100644 index 00000000000..cc01c08f56d --- /dev/null +++ b/agent/vendor/github.com/fsnotify/fsnotify/CHANGELOG.md @@ -0,0 +1,357 @@ +# Changelog + +All notable changes to this project will be documented in this file. + +The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/), +and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html). + +## [Unreleased] + +## [1.5.4] - 2022-04-25 + +* Windows: add missing defer to `Watcher.WatchList` [#447](https://github.com/fsnotify/fsnotify/pull/447) +* go.mod: use latest x/sys [#444](https://github.com/fsnotify/fsnotify/pull/444) +* Fix compilation for OpenBSD [#443](https://github.com/fsnotify/fsnotify/pull/443) + +## [1.5.3] - 2022-04-22 + +* This version is retracted. An incorrect branch is published accidentally [#445](https://github.com/fsnotify/fsnotify/issues/445) + +## [1.5.2] - 2022-04-21 + +* Add a feature to return the directories and files that are being monitored [#374](https://github.com/fsnotify/fsnotify/pull/374) +* Fix potential crash on windows if `raw.FileNameLength` exceeds `syscall.MAX_PATH` [#361](https://github.com/fsnotify/fsnotify/pull/361) +* Allow build on unsupported GOOS [#424](https://github.com/fsnotify/fsnotify/pull/424) +* Don't set `poller.fd` twice in `newFdPoller` [#406](https://github.com/fsnotify/fsnotify/pull/406) +* fix go vet warnings: call to `(*T).Fatalf` from a non-test goroutine [#416](https://github.com/fsnotify/fsnotify/pull/416) + +## [1.5.1] - 2021-08-24 + +* Revert Add AddRaw to not follow symlinks [#394](https://github.com/fsnotify/fsnotify/pull/394) + +## [1.5.0] - 2021-08-20 + +* Go: Increase minimum required version to Go 1.12 [#381](https://github.com/fsnotify/fsnotify/pull/381) +* Feature: Add AddRaw method which does not follow symlinks when adding a watch [#289](https://github.com/fsnotify/fsnotify/pull/298) +* Windows: Follow symlinks by default like on all other systems [#289](https://github.com/fsnotify/fsnotify/pull/289) +* CI: Use GitHub Actions for CI and cover go 1.12-1.17 + [#378](https://github.com/fsnotify/fsnotify/pull/378) + [#381](https://github.com/fsnotify/fsnotify/pull/381) + [#385](https://github.com/fsnotify/fsnotify/pull/385) +* Go 1.14+: Fix unsafe pointer conversion [#325](https://github.com/fsnotify/fsnotify/pull/325) + +## [1.4.7] - 2018-01-09 + +* BSD/macOS: Fix possible deadlock on closing the watcher on kqueue (thanks @nhooyr and @glycerine) +* Tests: Fix missing verb on format string (thanks @rchiossi) +* Linux: Fix deadlock in Remove (thanks @aarondl) +* Linux: Watch.Add improvements (avoid race, fix consistency, reduce garbage) (thanks @twpayne) +* Docs: Moved FAQ into the README (thanks @vahe) +* Linux: Properly handle inotify's IN_Q_OVERFLOW event (thanks @zeldovich) +* Docs: replace references to OS X with macOS + +## [1.4.2] - 2016-10-10 + +* Linux: use InotifyInit1 with IN_CLOEXEC to stop leaking a file descriptor to a child process when using fork/exec [#178](https://github.com/fsnotify/fsnotify/pull/178) (thanks @pattyshack) + +## [1.4.1] - 2016-10-04 + +* Fix flaky inotify stress test on Linux [#177](https://github.com/fsnotify/fsnotify/pull/177) (thanks @pattyshack) + +## [1.4.0] - 2016-10-01 + +* add a String() method to Event.Op [#165](https://github.com/fsnotify/fsnotify/pull/165) (thanks @oozie) + +## [1.3.1] - 2016-06-28 + +* Windows: fix for double backslash when watching the root of a drive [#151](https://github.com/fsnotify/fsnotify/issues/151) (thanks @brunoqc) + +## [1.3.0] - 2016-04-19 + +* Support linux/arm64 by [patching](https://go-review.googlesource.com/#/c/21971/) x/sys/unix and switching to to it from syscall (thanks @suihkulokki) [#135](https://github.com/fsnotify/fsnotify/pull/135) + +## [1.2.10] - 2016-03-02 + +* Fix golint errors in windows.go [#121](https://github.com/fsnotify/fsnotify/pull/121) (thanks @tiffanyfj) + +## [1.2.9] - 2016-01-13 + +kqueue: Fix logic for CREATE after REMOVE [#111](https://github.com/fsnotify/fsnotify/pull/111) (thanks @bep) + +## [1.2.8] - 2015-12-17 + +* kqueue: fix race condition in Close [#105](https://github.com/fsnotify/fsnotify/pull/105) (thanks @djui for reporting the issue and @ppknap for writing a failing test) +* inotify: fix race in test +* enable race detection for continuous integration (Linux, Mac, Windows) + +## [1.2.5] - 2015-10-17 + +* inotify: use epoll_create1 for arm64 support (requires Linux 2.6.27 or later) [#100](https://github.com/fsnotify/fsnotify/pull/100) (thanks @suihkulokki) +* inotify: fix path leaks [#73](https://github.com/fsnotify/fsnotify/pull/73) (thanks @chamaken) +* kqueue: watch for rename events on subdirectories [#83](https://github.com/fsnotify/fsnotify/pull/83) (thanks @guotie) +* kqueue: avoid infinite loops from symlinks cycles [#101](https://github.com/fsnotify/fsnotify/pull/101) (thanks @illicitonion) + +## [1.2.1] - 2015-10-14 + +* kqueue: don't watch named pipes [#98](https://github.com/fsnotify/fsnotify/pull/98) (thanks @evanphx) + +## [1.2.0] - 2015-02-08 + +* inotify: use epoll to wake up readEvents [#66](https://github.com/fsnotify/fsnotify/pull/66) (thanks @PieterD) +* inotify: closing watcher should now always shut down goroutine [#63](https://github.com/fsnotify/fsnotify/pull/63) (thanks @PieterD) +* kqueue: close kqueue after removing watches, fixes [#59](https://github.com/fsnotify/fsnotify/issues/59) + +## [1.1.1] - 2015-02-05 + +* inotify: Retry read on EINTR [#61](https://github.com/fsnotify/fsnotify/issues/61) (thanks @PieterD) + +## [1.1.0] - 2014-12-12 + +* kqueue: rework internals [#43](https://github.com/fsnotify/fsnotify/pull/43) + * add low-level functions + * only need to store flags on directories + * less mutexes [#13](https://github.com/fsnotify/fsnotify/issues/13) + * done can be an unbuffered channel + * remove calls to os.NewSyscallError +* More efficient string concatenation for Event.String() [#52](https://github.com/fsnotify/fsnotify/pull/52) (thanks @mdlayher) +* kqueue: fix regression in rework causing subdirectories to be watched [#48](https://github.com/fsnotify/fsnotify/issues/48) +* kqueue: cleanup internal watch before sending remove event [#51](https://github.com/fsnotify/fsnotify/issues/51) + +## [1.0.4] - 2014-09-07 + +* kqueue: add dragonfly to the build tags. +* Rename source code files, rearrange code so exported APIs are at the top. +* Add done channel to example code. [#37](https://github.com/fsnotify/fsnotify/pull/37) (thanks @chenyukang) + +## [1.0.3] - 2014-08-19 + +* [Fix] Windows MOVED_TO now translates to Create like on BSD and Linux. [#36](https://github.com/fsnotify/fsnotify/issues/36) + +## [1.0.2] - 2014-08-17 + +* [Fix] Missing create events on macOS. [#14](https://github.com/fsnotify/fsnotify/issues/14) (thanks @zhsso) +* [Fix] Make ./path and path equivalent. (thanks @zhsso) + +## [1.0.0] - 2014-08-15 + +* [API] Remove AddWatch on Windows, use Add. +* Improve documentation for exported identifiers. [#30](https://github.com/fsnotify/fsnotify/issues/30) +* Minor updates based on feedback from golint. + +## dev / 2014-07-09 + +* Moved to [github.com/fsnotify/fsnotify](https://github.com/fsnotify/fsnotify). +* Use os.NewSyscallError instead of returning errno (thanks @hariharan-uno) + +## dev / 2014-07-04 + +* kqueue: fix incorrect mutex used in Close() +* Update example to demonstrate usage of Op. + +## dev / 2014-06-28 + +* [API] Don't set the Write Op for attribute notifications [#4](https://github.com/fsnotify/fsnotify/issues/4) +* Fix for String() method on Event (thanks Alex Brainman) +* Don't build on Plan 9 or Solaris (thanks @4ad) + +## dev / 2014-06-21 + +* Events channel of type Event rather than *Event. +* [internal] use syscall constants directly for inotify and kqueue. +* [internal] kqueue: rename events to kevents and fileEvent to event. + +## dev / 2014-06-19 + +* Go 1.3+ required on Windows (uses syscall.ERROR_MORE_DATA internally). +* [internal] remove cookie from Event struct (unused). +* [internal] Event struct has the same definition across every OS. +* [internal] remove internal watch and removeWatch methods. + +## dev / 2014-06-12 + +* [API] Renamed Watch() to Add() and RemoveWatch() to Remove(). +* [API] Pluralized channel names: Events and Errors. +* [API] Renamed FileEvent struct to Event. +* [API] Op constants replace methods like IsCreate(). + +## dev / 2014-06-12 + +* Fix data race on kevent buffer (thanks @tilaks) [#98](https://github.com/howeyc/fsnotify/pull/98) + +## dev / 2014-05-23 + +* [API] Remove current implementation of WatchFlags. + * current implementation doesn't take advantage of OS for efficiency + * provides little benefit over filtering events as they are received, but has extra bookkeeping and mutexes + * no tests for the current implementation + * not fully implemented on Windows [#93](https://github.com/howeyc/fsnotify/issues/93#issuecomment-39285195) + +## [0.9.3] - 2014-12-31 + +* kqueue: cleanup internal watch before sending remove event [#51](https://github.com/fsnotify/fsnotify/issues/51) + +## [0.9.2] - 2014-08-17 + +* [Backport] Fix missing create events on macOS. [#14](https://github.com/fsnotify/fsnotify/issues/14) (thanks @zhsso) + +## [0.9.1] - 2014-06-12 + +* Fix data race on kevent buffer (thanks @tilaks) [#98](https://github.com/howeyc/fsnotify/pull/98) + +## [0.9.0] - 2014-01-17 + +* IsAttrib() for events that only concern a file's metadata [#79][] (thanks @abustany) +* [Fix] kqueue: fix deadlock [#77][] (thanks @cespare) +* [NOTICE] Development has moved to `code.google.com/p/go.exp/fsnotify` in preparation for inclusion in the Go standard library. + +## [0.8.12] - 2013-11-13 + +* [API] Remove FD_SET and friends from Linux adapter + +## [0.8.11] - 2013-11-02 + +* [Doc] Add Changelog [#72][] (thanks @nathany) +* [Doc] Spotlight and double modify events on macOS [#62][] (reported by @paulhammond) + +## [0.8.10] - 2013-10-19 + +* [Fix] kqueue: remove file watches when parent directory is removed [#71][] (reported by @mdwhatcott) +* [Fix] kqueue: race between Close and readEvents [#70][] (reported by @bernerdschaefer) +* [Doc] specify OS-specific limits in README (thanks @debrando) + +## [0.8.9] - 2013-09-08 + +* [Doc] Contributing (thanks @nathany) +* [Doc] update package path in example code [#63][] (thanks @paulhammond) +* [Doc] GoCI badge in README (Linux only) [#60][] +* [Doc] Cross-platform testing with Vagrant [#59][] (thanks @nathany) + +## [0.8.8] - 2013-06-17 + +* [Fix] Windows: handle `ERROR_MORE_DATA` on Windows [#49][] (thanks @jbowtie) + +## [0.8.7] - 2013-06-03 + +* [API] Make syscall flags internal +* [Fix] inotify: ignore event changes +* [Fix] race in symlink test [#45][] (reported by @srid) +* [Fix] tests on Windows +* lower case error messages + +## [0.8.6] - 2013-05-23 + +* kqueue: Use EVT_ONLY flag on Darwin +* [Doc] Update README with full example + +## [0.8.5] - 2013-05-09 + +* [Fix] inotify: allow monitoring of "broken" symlinks (thanks @tsg) + +## [0.8.4] - 2013-04-07 + +* [Fix] kqueue: watch all file events [#40][] (thanks @ChrisBuchholz) + +## [0.8.3] - 2013-03-13 + +* [Fix] inoitfy/kqueue memory leak [#36][] (reported by @nbkolchin) +* [Fix] kqueue: use fsnFlags for watching a directory [#33][] (reported by @nbkolchin) + +## [0.8.2] - 2013-02-07 + +* [Doc] add Authors +* [Fix] fix data races for map access [#29][] (thanks @fsouza) + +## [0.8.1] - 2013-01-09 + +* [Fix] Windows path separators +* [Doc] BSD License + +## [0.8.0] - 2012-11-09 + +* kqueue: directory watching improvements (thanks @vmirage) +* inotify: add `IN_MOVED_TO` [#25][] (requested by @cpisto) +* [Fix] kqueue: deleting watched directory [#24][] (reported by @jakerr) + +## [0.7.4] - 2012-10-09 + +* [Fix] inotify: fixes from https://codereview.appspot.com/5418045/ (ugorji) +* [Fix] kqueue: preserve watch flags when watching for delete [#21][] (reported by @robfig) +* [Fix] kqueue: watch the directory even if it isn't a new watch (thanks @robfig) +* [Fix] kqueue: modify after recreation of file + +## [0.7.3] - 2012-09-27 + +* [Fix] kqueue: watch with an existing folder inside the watched folder (thanks @vmirage) +* [Fix] kqueue: no longer get duplicate CREATE events + +## [0.7.2] - 2012-09-01 + +* kqueue: events for created directories + +## [0.7.1] - 2012-07-14 + +* [Fix] for renaming files + +## [0.7.0] - 2012-07-02 + +* [Feature] FSNotify flags +* [Fix] inotify: Added file name back to event path + +## [0.6.0] - 2012-06-06 + +* kqueue: watch files after directory created (thanks @tmc) + +## [0.5.1] - 2012-05-22 + +* [Fix] inotify: remove all watches before Close() + +## [0.5.0] - 2012-05-03 + +* [API] kqueue: return errors during watch instead of sending over channel +* kqueue: match symlink behavior on Linux +* inotify: add `DELETE_SELF` (requested by @taralx) +* [Fix] kqueue: handle EINTR (reported by @robfig) +* [Doc] Godoc example [#1][] (thanks @davecheney) + +## [0.4.0] - 2012-03-30 + +* Go 1 released: build with go tool +* [Feature] Windows support using winfsnotify +* Windows does not have attribute change notifications +* Roll attribute notifications into IsModify + +## [0.3.0] - 2012-02-19 + +* kqueue: add files when watch directory + +## [0.2.0] - 2011-12-30 + +* update to latest Go weekly code + +## [0.1.0] - 2011-10-19 + +* kqueue: add watch on file creation to match inotify +* kqueue: create file event +* inotify: ignore `IN_IGNORED` events +* event String() +* linux: common FileEvent functions +* initial commit + +[#79]: https://github.com/howeyc/fsnotify/pull/79 +[#77]: https://github.com/howeyc/fsnotify/pull/77 +[#72]: https://github.com/howeyc/fsnotify/issues/72 +[#71]: https://github.com/howeyc/fsnotify/issues/71 +[#70]: https://github.com/howeyc/fsnotify/issues/70 +[#63]: https://github.com/howeyc/fsnotify/issues/63 +[#62]: https://github.com/howeyc/fsnotify/issues/62 +[#60]: https://github.com/howeyc/fsnotify/issues/60 +[#59]: https://github.com/howeyc/fsnotify/issues/59 +[#49]: https://github.com/howeyc/fsnotify/issues/49 +[#45]: https://github.com/howeyc/fsnotify/issues/45 +[#40]: https://github.com/howeyc/fsnotify/issues/40 +[#36]: https://github.com/howeyc/fsnotify/issues/36 +[#33]: https://github.com/howeyc/fsnotify/issues/33 +[#29]: https://github.com/howeyc/fsnotify/issues/29 +[#25]: https://github.com/howeyc/fsnotify/issues/25 +[#24]: https://github.com/howeyc/fsnotify/issues/24 +[#21]: https://github.com/howeyc/fsnotify/issues/21 diff --git a/agent/vendor/github.com/fsnotify/fsnotify/CONTRIBUTING.md b/agent/vendor/github.com/fsnotify/fsnotify/CONTRIBUTING.md new file mode 100644 index 00000000000..8a642563d71 --- /dev/null +++ b/agent/vendor/github.com/fsnotify/fsnotify/CONTRIBUTING.md @@ -0,0 +1,60 @@ +# Contributing + +## Issues + +* Request features and report bugs using the [GitHub Issue Tracker](https://github.com/fsnotify/fsnotify/issues). +* Please indicate the platform you are using fsnotify on. +* A code example to reproduce the problem is appreciated. + +## Pull Requests + +### Contributor License Agreement + +fsnotify is derived from code in the [golang.org/x/exp](https://godoc.org/golang.org/x/exp) package and it may be included [in the standard library](https://github.com/fsnotify/fsnotify/issues/1) in the future. Therefore fsnotify carries the same [LICENSE](https://github.com/fsnotify/fsnotify/blob/master/LICENSE) as Go. Contributors retain their copyright, so you need to fill out a short form before we can accept your contribution: [Google Individual Contributor License Agreement](https://developers.google.com/open-source/cla/individual). + +Please indicate that you have signed the CLA in your pull request. + +### How fsnotify is Developed + +* Development is done on feature branches. +* Tests are run on BSD, Linux, macOS and Windows. +* Pull requests are reviewed and [applied to master][am] using [hub][]. + * Maintainers may modify or squash commits rather than asking contributors to. +* To issue a new release, the maintainers will: + * Update the CHANGELOG + * Tag a version, which will become available through gopkg.in. + +### How to Fork + +For smooth sailing, always use the original import path. Installing with `go get` makes this easy. + +1. Install from GitHub (`go get -u github.com/fsnotify/fsnotify`) +2. Create your feature branch (`git checkout -b my-new-feature`) +3. Ensure everything works and the tests pass (see below) +4. Commit your changes (`git commit -am 'Add some feature'`) + +Contribute upstream: + +1. Fork fsnotify on GitHub +2. Add your remote (`git remote add fork git@github.com:mycompany/repo.git`) +3. Push to the branch (`git push fork my-new-feature`) +4. Create a new Pull Request on GitHub + +This workflow is [thoroughly explained by Katrina Owen](https://splice.com/blog/contributing-open-source-git-repositories-go/). + +### Testing + +fsnotify uses build tags to compile different code on Linux, BSD, macOS, and Windows. + +Before doing a pull request, please do your best to test your changes on multiple platforms, and list which platforms you were able/unable to test on. + +### Maintainers + +Help maintaining fsnotify is welcome. To be a maintainer: + +* Submit a pull request and sign the CLA as above. +* You must be able to run the test suite on Mac, Windows, Linux and BSD. + +All code changes should be internal pull requests. + +Releases are tagged using [Semantic Versioning](http://semver.org/). diff --git a/agent/vendor/github.com/fsnotify/fsnotify/LICENSE b/agent/vendor/github.com/fsnotify/fsnotify/LICENSE new file mode 100644 index 00000000000..e180c8fb059 --- /dev/null +++ b/agent/vendor/github.com/fsnotify/fsnotify/LICENSE @@ -0,0 +1,28 @@ +Copyright (c) 2012 The Go Authors. All rights reserved. +Copyright (c) 2012-2019 fsnotify Authors. All rights reserved. + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions are +met: + + * Redistributions of source code must retain the above copyright +notice, this list of conditions and the following disclaimer. + * Redistributions in binary form must reproduce the above +copyright notice, this list of conditions and the following disclaimer +in the documentation and/or other materials provided with the +distribution. + * Neither the name of Google Inc. nor the names of its +contributors may be used to endorse or promote products derived from +this software without specific prior written permission. + +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. diff --git a/agent/vendor/github.com/fsnotify/fsnotify/README.md b/agent/vendor/github.com/fsnotify/fsnotify/README.md new file mode 100644 index 00000000000..0731c5ef8ad --- /dev/null +++ b/agent/vendor/github.com/fsnotify/fsnotify/README.md @@ -0,0 +1,120 @@ +# File system notifications for Go + +[![Go Reference](https://pkg.go.dev/badge/github.com/fsnotify/fsnotify.svg)](https://pkg.go.dev/github.com/fsnotify/fsnotify) [![Go Report Card](https://goreportcard.com/badge/github.com/fsnotify/fsnotify)](https://goreportcard.com/report/github.com/fsnotify/fsnotify) [![Maintainers Wanted](https://img.shields.io/badge/maintainers-wanted-red.svg)](https://github.com/fsnotify/fsnotify/issues/413) + +fsnotify utilizes [`golang.org/x/sys`](https://pkg.go.dev/golang.org/x/sys) rather than [`syscall`](https://pkg.go.dev/syscall) from the standard library. + +Cross platform: Windows, Linux, BSD and macOS. + +| Adapter | OS | Status | +| --------------------- | -------------------------------- | ------------------------------------------------------------------------------------------------------------------------------- | +| inotify | Linux 2.6.27 or later, Android\* | Supported | +| kqueue | BSD, macOS, iOS\* | Supported | +| ReadDirectoryChangesW | Windows | Supported | +| FSEvents | macOS | [Planned](https://github.com/fsnotify/fsnotify/issues/11) | +| FEN | Solaris 11 | [In Progress](https://github.com/fsnotify/fsnotify/pull/371) | +| fanotify | Linux 2.6.37+ | [Maybe](https://github.com/fsnotify/fsnotify/issues/114) | +| USN Journals | Windows | [Maybe](https://github.com/fsnotify/fsnotify/issues/53) | +| Polling | *All* | [Maybe](https://github.com/fsnotify/fsnotify/issues/9) | + +\* Android and iOS are untested. + +Please see [the documentation](https://pkg.go.dev/github.com/fsnotify/fsnotify) and consult the [FAQ](#faq) for usage information. + +## API stability + +fsnotify is a fork of [howeyc/fsnotify](https://github.com/howeyc/fsnotify) with a new API as of v1.0. The API is based on [this design document](http://goo.gl/MrYxyA). + +All [releases](https://github.com/fsnotify/fsnotify/releases) are tagged based on [Semantic Versioning](http://semver.org/). + +## Usage + +```go +package main + +import ( + "log" + + "github.com/fsnotify/fsnotify" +) + +func main() { + watcher, err := fsnotify.NewWatcher() + if err != nil { + log.Fatal(err) + } + defer watcher.Close() + + done := make(chan bool) + go func() { + for { + select { + case event, ok := <-watcher.Events: + if !ok { + return + } + log.Println("event:", event) + if event.Op&fsnotify.Write == fsnotify.Write { + log.Println("modified file:", event.Name) + } + case err, ok := <-watcher.Errors: + if !ok { + return + } + log.Println("error:", err) + } + } + }() + + err = watcher.Add("/tmp/foo") + if err != nil { + log.Fatal(err) + } + <-done +} +``` + +## Contributing + +Please refer to [CONTRIBUTING][] before opening an issue or pull request. + +## FAQ + +**When a file is moved to another directory is it still being watched?** + +No (it shouldn't be, unless you are watching where it was moved to). + +**When I watch a directory, are all subdirectories watched as well?** + +No, you must add watches for any directory you want to watch (a recursive watcher is on the roadmap [#18][]). + +**Do I have to watch the Error and Event channels in a separate goroutine?** + +As of now, yes. Looking into making this single-thread friendly (see [howeyc #7][#7]) + +**Why am I receiving multiple events for the same file on OS X?** + +Spotlight indexing on OS X can result in multiple events (see [howeyc #62][#62]). A temporary workaround is to add your folder(s) to the *Spotlight Privacy settings* until we have a native FSEvents implementation (see [#11][]). + +**How many files can be watched at once?** + +There are OS-specific limits as to how many watches can be created: +* Linux: /proc/sys/fs/inotify/max_user_watches contains the limit, reaching this limit results in a "no space left on device" error. +* BSD / OSX: sysctl variables "kern.maxfiles" and "kern.maxfilesperproc", reaching these limits results in a "too many open files" error. + +**Why don't notifications work with NFS filesystems or filesystem in userspace (FUSE)?** + +fsnotify requires support from underlying OS to work. The current NFS protocol does not provide network level support for file notifications. + +[#62]: https://github.com/howeyc/fsnotify/issues/62 +[#18]: https://github.com/fsnotify/fsnotify/issues/18 +[#11]: https://github.com/fsnotify/fsnotify/issues/11 +[#7]: https://github.com/howeyc/fsnotify/issues/7 + +[contributing]: https://github.com/fsnotify/fsnotify/blob/master/CONTRIBUTING.md + +## Related Projects + +* [notify](https://github.com/rjeczalik/notify) +* [fsevents](https://github.com/fsnotify/fsevents) + diff --git a/agent/vendor/github.com/fsnotify/fsnotify/fen.go b/agent/vendor/github.com/fsnotify/fsnotify/fen.go new file mode 100644 index 00000000000..b3ac3d8f55f --- /dev/null +++ b/agent/vendor/github.com/fsnotify/fsnotify/fen.go @@ -0,0 +1,38 @@ +// Copyright 2010 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +//go:build solaris +// +build solaris + +package fsnotify + +import ( + "errors" +) + +// Watcher watches a set of files, delivering events to a channel. +type Watcher struct { + Events chan Event + Errors chan error +} + +// NewWatcher establishes a new watcher with the underlying OS and begins waiting for events. +func NewWatcher() (*Watcher, error) { + return nil, errors.New("FEN based watcher not yet supported for fsnotify\n") +} + +// Close removes all watches and closes the events channel. +func (w *Watcher) Close() error { + return nil +} + +// Add starts watching the named file or directory (non-recursively). +func (w *Watcher) Add(name string) error { + return nil +} + +// Remove stops watching the the named file or directory (non-recursively). +func (w *Watcher) Remove(name string) error { + return nil +} diff --git a/agent/vendor/github.com/fsnotify/fsnotify/fsnotify.go b/agent/vendor/github.com/fsnotify/fsnotify/fsnotify.go new file mode 100644 index 00000000000..0f4ee52e8aa --- /dev/null +++ b/agent/vendor/github.com/fsnotify/fsnotify/fsnotify.go @@ -0,0 +1,69 @@ +// Copyright 2012 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +//go:build !plan9 +// +build !plan9 + +// Package fsnotify provides a platform-independent interface for file system notifications. +package fsnotify + +import ( + "bytes" + "errors" + "fmt" +) + +// Event represents a single file system notification. +type Event struct { + Name string // Relative path to the file or directory. + Op Op // File operation that triggered the event. +} + +// Op describes a set of file operations. +type Op uint32 + +// These are the generalized file operations that can trigger a notification. +const ( + Create Op = 1 << iota + Write + Remove + Rename + Chmod +) + +func (op Op) String() string { + // Use a buffer for efficient string concatenation + var buffer bytes.Buffer + + if op&Create == Create { + buffer.WriteString("|CREATE") + } + if op&Remove == Remove { + buffer.WriteString("|REMOVE") + } + if op&Write == Write { + buffer.WriteString("|WRITE") + } + if op&Rename == Rename { + buffer.WriteString("|RENAME") + } + if op&Chmod == Chmod { + buffer.WriteString("|CHMOD") + } + if buffer.Len() == 0 { + return "" + } + return buffer.String()[1:] // Strip leading pipe +} + +// String returns a string representation of the event in the form +// "file: REMOVE|WRITE|..." +func (e Event) String() string { + return fmt.Sprintf("%q: %s", e.Name, e.Op.String()) +} + +// Common errors that can be reported by a watcher +var ( + ErrEventOverflow = errors.New("fsnotify queue overflow") +) diff --git a/agent/vendor/github.com/fsnotify/fsnotify/fsnotify_unsupported.go b/agent/vendor/github.com/fsnotify/fsnotify/fsnotify_unsupported.go new file mode 100644 index 00000000000..59688559836 --- /dev/null +++ b/agent/vendor/github.com/fsnotify/fsnotify/fsnotify_unsupported.go @@ -0,0 +1,36 @@ +// Copyright 2022 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +//go:build !darwin && !dragonfly && !freebsd && !openbsd && !linux && !netbsd && !solaris && !windows +// +build !darwin,!dragonfly,!freebsd,!openbsd,!linux,!netbsd,!solaris,!windows + +package fsnotify + +import ( + "fmt" + "runtime" +) + +// Watcher watches a set of files, delivering events to a channel. +type Watcher struct{} + +// NewWatcher establishes a new watcher with the underlying OS and begins waiting for events. +func NewWatcher() (*Watcher, error) { + return nil, fmt.Errorf("fsnotify not supported on %s", runtime.GOOS) +} + +// Close removes all watches and closes the events channel. +func (w *Watcher) Close() error { + return nil +} + +// Add starts watching the named file or directory (non-recursively). +func (w *Watcher) Add(name string) error { + return nil +} + +// Remove stops watching the the named file or directory (non-recursively). +func (w *Watcher) Remove(name string) error { + return nil +} diff --git a/agent/vendor/github.com/fsnotify/fsnotify/go.mod b/agent/vendor/github.com/fsnotify/fsnotify/go.mod new file mode 100644 index 00000000000..48cfd07fe23 --- /dev/null +++ b/agent/vendor/github.com/fsnotify/fsnotify/go.mod @@ -0,0 +1,10 @@ +module github.com/fsnotify/fsnotify + +go 1.16 + +require golang.org/x/sys v0.0.0-20220412211240-33da011f77ad + +retract ( + v1.5.3 // Published an incorrect branch accidentally https://github.com/fsnotify/fsnotify/issues/445 + v1.5.0 // Contains symlink regression https://github.com/fsnotify/fsnotify/pull/394 +) diff --git a/agent/vendor/github.com/fsnotify/fsnotify/go.sum b/agent/vendor/github.com/fsnotify/fsnotify/go.sum new file mode 100644 index 00000000000..7f2d82d5c1b --- /dev/null +++ b/agent/vendor/github.com/fsnotify/fsnotify/go.sum @@ -0,0 +1,2 @@ +golang.org/x/sys v0.0.0-20220412211240-33da011f77ad h1:ntjMns5wyP/fN65tdBD4g8J5w8n015+iIIs9rtjXkY0= +golang.org/x/sys v0.0.0-20220412211240-33da011f77ad/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= diff --git a/agent/vendor/github.com/fsnotify/fsnotify/inotify.go b/agent/vendor/github.com/fsnotify/fsnotify/inotify.go new file mode 100644 index 00000000000..a6d0e0ec8c1 --- /dev/null +++ b/agent/vendor/github.com/fsnotify/fsnotify/inotify.go @@ -0,0 +1,351 @@ +// Copyright 2010 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +//go:build linux +// +build linux + +package fsnotify + +import ( + "errors" + "fmt" + "io" + "os" + "path/filepath" + "strings" + "sync" + "unsafe" + + "golang.org/x/sys/unix" +) + +// Watcher watches a set of files, delivering events to a channel. +type Watcher struct { + Events chan Event + Errors chan error + mu sync.Mutex // Map access + fd int + poller *fdPoller + watches map[string]*watch // Map of inotify watches (key: path) + paths map[int]string // Map of watched paths (key: watch descriptor) + done chan struct{} // Channel for sending a "quit message" to the reader goroutine + doneResp chan struct{} // Channel to respond to Close +} + +// NewWatcher establishes a new watcher with the underlying OS and begins waiting for events. +func NewWatcher() (*Watcher, error) { + // Create inotify fd + fd, errno := unix.InotifyInit1(unix.IN_CLOEXEC) + if fd == -1 { + return nil, errno + } + // Create epoll + poller, err := newFdPoller(fd) + if err != nil { + unix.Close(fd) + return nil, err + } + w := &Watcher{ + fd: fd, + poller: poller, + watches: make(map[string]*watch), + paths: make(map[int]string), + Events: make(chan Event), + Errors: make(chan error), + done: make(chan struct{}), + doneResp: make(chan struct{}), + } + + go w.readEvents() + return w, nil +} + +func (w *Watcher) isClosed() bool { + select { + case <-w.done: + return true + default: + return false + } +} + +// Close removes all watches and closes the events channel. +func (w *Watcher) Close() error { + if w.isClosed() { + return nil + } + + // Send 'close' signal to goroutine, and set the Watcher to closed. + close(w.done) + + // Wake up goroutine + w.poller.wake() + + // Wait for goroutine to close + <-w.doneResp + + return nil +} + +// Add starts watching the named file or directory (non-recursively). +func (w *Watcher) Add(name string) error { + name = filepath.Clean(name) + if w.isClosed() { + return errors.New("inotify instance already closed") + } + + const agnosticEvents = unix.IN_MOVED_TO | unix.IN_MOVED_FROM | + unix.IN_CREATE | unix.IN_ATTRIB | unix.IN_MODIFY | + unix.IN_MOVE_SELF | unix.IN_DELETE | unix.IN_DELETE_SELF + + var flags uint32 = agnosticEvents + + w.mu.Lock() + defer w.mu.Unlock() + watchEntry := w.watches[name] + if watchEntry != nil { + flags |= watchEntry.flags | unix.IN_MASK_ADD + } + wd, errno := unix.InotifyAddWatch(w.fd, name, flags) + if wd == -1 { + return errno + } + + if watchEntry == nil { + w.watches[name] = &watch{wd: uint32(wd), flags: flags} + w.paths[wd] = name + } else { + watchEntry.wd = uint32(wd) + watchEntry.flags = flags + } + + return nil +} + +// Remove stops watching the named file or directory (non-recursively). +func (w *Watcher) Remove(name string) error { + name = filepath.Clean(name) + + // Fetch the watch. + w.mu.Lock() + defer w.mu.Unlock() + watch, ok := w.watches[name] + + // Remove it from inotify. + if !ok { + return fmt.Errorf("can't remove non-existent inotify watch for: %s", name) + } + + // We successfully removed the watch if InotifyRmWatch doesn't return an + // error, we need to clean up our internal state to ensure it matches + // inotify's kernel state. + delete(w.paths, int(watch.wd)) + delete(w.watches, name) + + // inotify_rm_watch will return EINVAL if the file has been deleted; + // the inotify will already have been removed. + // watches and pathes are deleted in ignoreLinux() implicitly and asynchronously + // by calling inotify_rm_watch() below. e.g. readEvents() goroutine receives IN_IGNORE + // so that EINVAL means that the wd is being rm_watch()ed or its file removed + // by another thread and we have not received IN_IGNORE event. + success, errno := unix.InotifyRmWatch(w.fd, watch.wd) + if success == -1 { + // TODO: Perhaps it's not helpful to return an error here in every case. + // the only two possible errors are: + // EBADF, which happens when w.fd is not a valid file descriptor of any kind. + // EINVAL, which is when fd is not an inotify descriptor or wd is not a valid watch descriptor. + // Watch descriptors are invalidated when they are removed explicitly or implicitly; + // explicitly by inotify_rm_watch, implicitly when the file they are watching is deleted. + return errno + } + + return nil +} + +// WatchList returns the directories and files that are being monitered. +func (w *Watcher) WatchList() []string { + w.mu.Lock() + defer w.mu.Unlock() + + entries := make([]string, 0, len(w.watches)) + for pathname := range w.watches { + entries = append(entries, pathname) + } + + return entries +} + +type watch struct { + wd uint32 // Watch descriptor (as returned by the inotify_add_watch() syscall) + flags uint32 // inotify flags of this watch (see inotify(7) for the list of valid flags) +} + +// readEvents reads from the inotify file descriptor, converts the +// received events into Event objects and sends them via the Events channel +func (w *Watcher) readEvents() { + var ( + buf [unix.SizeofInotifyEvent * 4096]byte // Buffer for a maximum of 4096 raw events + n int // Number of bytes read with read() + errno error // Syscall errno + ok bool // For poller.wait + ) + + defer close(w.doneResp) + defer close(w.Errors) + defer close(w.Events) + defer unix.Close(w.fd) + defer w.poller.close() + + for { + // See if we have been closed. + if w.isClosed() { + return + } + + ok, errno = w.poller.wait() + if errno != nil { + select { + case w.Errors <- errno: + case <-w.done: + return + } + continue + } + + if !ok { + continue + } + + n, errno = unix.Read(w.fd, buf[:]) + // If a signal interrupted execution, see if we've been asked to close, and try again. + // http://man7.org/linux/man-pages/man7/signal.7.html : + // "Before Linux 3.8, reads from an inotify(7) file descriptor were not restartable" + if errno == unix.EINTR { + continue + } + + // unix.Read might have been woken up by Close. If so, we're done. + if w.isClosed() { + return + } + + if n < unix.SizeofInotifyEvent { + var err error + if n == 0 { + // If EOF is received. This should really never happen. + err = io.EOF + } else if n < 0 { + // If an error occurred while reading. + err = errno + } else { + // Read was too short. + err = errors.New("notify: short read in readEvents()") + } + select { + case w.Errors <- err: + case <-w.done: + return + } + continue + } + + var offset uint32 + // We don't know how many events we just read into the buffer + // While the offset points to at least one whole event... + for offset <= uint32(n-unix.SizeofInotifyEvent) { + // Point "raw" to the event in the buffer + raw := (*unix.InotifyEvent)(unsafe.Pointer(&buf[offset])) + + mask := uint32(raw.Mask) + nameLen := uint32(raw.Len) + + if mask&unix.IN_Q_OVERFLOW != 0 { + select { + case w.Errors <- ErrEventOverflow: + case <-w.done: + return + } + } + + // If the event happened to the watched directory or the watched file, the kernel + // doesn't append the filename to the event, but we would like to always fill the + // the "Name" field with a valid filename. We retrieve the path of the watch from + // the "paths" map. + w.mu.Lock() + name, ok := w.paths[int(raw.Wd)] + // IN_DELETE_SELF occurs when the file/directory being watched is removed. + // This is a sign to clean up the maps, otherwise we are no longer in sync + // with the inotify kernel state which has already deleted the watch + // automatically. + if ok && mask&unix.IN_DELETE_SELF == unix.IN_DELETE_SELF { + delete(w.paths, int(raw.Wd)) + delete(w.watches, name) + } + w.mu.Unlock() + + if nameLen > 0 { + // Point "bytes" at the first byte of the filename + bytes := (*[unix.PathMax]byte)(unsafe.Pointer(&buf[offset+unix.SizeofInotifyEvent]))[:nameLen:nameLen] + // The filename is padded with NULL bytes. TrimRight() gets rid of those. + name += "/" + strings.TrimRight(string(bytes[0:nameLen]), "\000") + } + + event := newEvent(name, mask) + + // Send the events that are not ignored on the events channel + if !event.ignoreLinux(mask) { + select { + case w.Events <- event: + case <-w.done: + return + } + } + + // Move to the next event in the buffer + offset += unix.SizeofInotifyEvent + nameLen + } + } +} + +// Certain types of events can be "ignored" and not sent over the Events +// channel. Such as events marked ignore by the kernel, or MODIFY events +// against files that do not exist. +func (e *Event) ignoreLinux(mask uint32) bool { + // Ignore anything the inotify API says to ignore + if mask&unix.IN_IGNORED == unix.IN_IGNORED { + return true + } + + // If the event is not a DELETE or RENAME, the file must exist. + // Otherwise the event is ignored. + // *Note*: this was put in place because it was seen that a MODIFY + // event was sent after the DELETE. This ignores that MODIFY and + // assumes a DELETE will come or has come if the file doesn't exist. + if !(e.Op&Remove == Remove || e.Op&Rename == Rename) { + _, statErr := os.Lstat(e.Name) + return os.IsNotExist(statErr) + } + return false +} + +// newEvent returns an platform-independent Event based on an inotify mask. +func newEvent(name string, mask uint32) Event { + e := Event{Name: name} + if mask&unix.IN_CREATE == unix.IN_CREATE || mask&unix.IN_MOVED_TO == unix.IN_MOVED_TO { + e.Op |= Create + } + if mask&unix.IN_DELETE_SELF == unix.IN_DELETE_SELF || mask&unix.IN_DELETE == unix.IN_DELETE { + e.Op |= Remove + } + if mask&unix.IN_MODIFY == unix.IN_MODIFY { + e.Op |= Write + } + if mask&unix.IN_MOVE_SELF == unix.IN_MOVE_SELF || mask&unix.IN_MOVED_FROM == unix.IN_MOVED_FROM { + e.Op |= Rename + } + if mask&unix.IN_ATTRIB == unix.IN_ATTRIB { + e.Op |= Chmod + } + return e +} diff --git a/agent/vendor/github.com/fsnotify/fsnotify/inotify_poller.go b/agent/vendor/github.com/fsnotify/fsnotify/inotify_poller.go new file mode 100644 index 00000000000..b572a37c3f1 --- /dev/null +++ b/agent/vendor/github.com/fsnotify/fsnotify/inotify_poller.go @@ -0,0 +1,187 @@ +// Copyright 2015 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +//go:build linux +// +build linux + +package fsnotify + +import ( + "errors" + + "golang.org/x/sys/unix" +) + +type fdPoller struct { + fd int // File descriptor (as returned by the inotify_init() syscall) + epfd int // Epoll file descriptor + pipe [2]int // Pipe for waking up +} + +func emptyPoller(fd int) *fdPoller { + poller := new(fdPoller) + poller.fd = fd + poller.epfd = -1 + poller.pipe[0] = -1 + poller.pipe[1] = -1 + return poller +} + +// Create a new inotify poller. +// This creates an inotify handler, and an epoll handler. +func newFdPoller(fd int) (*fdPoller, error) { + var errno error + poller := emptyPoller(fd) + defer func() { + if errno != nil { + poller.close() + } + }() + + // Create epoll fd + poller.epfd, errno = unix.EpollCreate1(unix.EPOLL_CLOEXEC) + if poller.epfd == -1 { + return nil, errno + } + // Create pipe; pipe[0] is the read end, pipe[1] the write end. + errno = unix.Pipe2(poller.pipe[:], unix.O_NONBLOCK|unix.O_CLOEXEC) + if errno != nil { + return nil, errno + } + + // Register inotify fd with epoll + event := unix.EpollEvent{ + Fd: int32(poller.fd), + Events: unix.EPOLLIN, + } + errno = unix.EpollCtl(poller.epfd, unix.EPOLL_CTL_ADD, poller.fd, &event) + if errno != nil { + return nil, errno + } + + // Register pipe fd with epoll + event = unix.EpollEvent{ + Fd: int32(poller.pipe[0]), + Events: unix.EPOLLIN, + } + errno = unix.EpollCtl(poller.epfd, unix.EPOLL_CTL_ADD, poller.pipe[0], &event) + if errno != nil { + return nil, errno + } + + return poller, nil +} + +// Wait using epoll. +// Returns true if something is ready to be read, +// false if there is not. +func (poller *fdPoller) wait() (bool, error) { + // 3 possible events per fd, and 2 fds, makes a maximum of 6 events. + // I don't know whether epoll_wait returns the number of events returned, + // or the total number of events ready. + // I decided to catch both by making the buffer one larger than the maximum. + events := make([]unix.EpollEvent, 7) + for { + n, errno := unix.EpollWait(poller.epfd, events, -1) + if n == -1 { + if errno == unix.EINTR { + continue + } + return false, errno + } + if n == 0 { + // If there are no events, try again. + continue + } + if n > 6 { + // This should never happen. More events were returned than should be possible. + return false, errors.New("epoll_wait returned more events than I know what to do with") + } + ready := events[:n] + epollhup := false + epollerr := false + epollin := false + for _, event := range ready { + if event.Fd == int32(poller.fd) { + if event.Events&unix.EPOLLHUP != 0 { + // This should not happen, but if it does, treat it as a wakeup. + epollhup = true + } + if event.Events&unix.EPOLLERR != 0 { + // If an error is waiting on the file descriptor, we should pretend + // something is ready to read, and let unix.Read pick up the error. + epollerr = true + } + if event.Events&unix.EPOLLIN != 0 { + // There is data to read. + epollin = true + } + } + if event.Fd == int32(poller.pipe[0]) { + if event.Events&unix.EPOLLHUP != 0 { + // Write pipe descriptor was closed, by us. This means we're closing down the + // watcher, and we should wake up. + } + if event.Events&unix.EPOLLERR != 0 { + // If an error is waiting on the pipe file descriptor. + // This is an absolute mystery, and should never ever happen. + return false, errors.New("Error on the pipe descriptor.") + } + if event.Events&unix.EPOLLIN != 0 { + // This is a regular wakeup, so we have to clear the buffer. + err := poller.clearWake() + if err != nil { + return false, err + } + } + } + } + + if epollhup || epollerr || epollin { + return true, nil + } + return false, nil + } +} + +// Close the write end of the poller. +func (poller *fdPoller) wake() error { + buf := make([]byte, 1) + n, errno := unix.Write(poller.pipe[1], buf) + if n == -1 { + if errno == unix.EAGAIN { + // Buffer is full, poller will wake. + return nil + } + return errno + } + return nil +} + +func (poller *fdPoller) clearWake() error { + // You have to be woken up a LOT in order to get to 100! + buf := make([]byte, 100) + n, errno := unix.Read(poller.pipe[0], buf) + if n == -1 { + if errno == unix.EAGAIN { + // Buffer is empty, someone else cleared our wake. + return nil + } + return errno + } + return nil +} + +// Close all poller file descriptors, but not the one passed to it. +func (poller *fdPoller) close() { + if poller.pipe[1] != -1 { + unix.Close(poller.pipe[1]) + } + if poller.pipe[0] != -1 { + unix.Close(poller.pipe[0]) + } + if poller.epfd != -1 { + unix.Close(poller.epfd) + } +} diff --git a/agent/vendor/github.com/fsnotify/fsnotify/kqueue.go b/agent/vendor/github.com/fsnotify/fsnotify/kqueue.go new file mode 100644 index 00000000000..6fb8d8532e7 --- /dev/null +++ b/agent/vendor/github.com/fsnotify/fsnotify/kqueue.go @@ -0,0 +1,535 @@ +// Copyright 2010 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +//go:build freebsd || openbsd || netbsd || dragonfly || darwin +// +build freebsd openbsd netbsd dragonfly darwin + +package fsnotify + +import ( + "errors" + "fmt" + "io/ioutil" + "os" + "path/filepath" + "sync" + "time" + + "golang.org/x/sys/unix" +) + +// Watcher watches a set of files, delivering events to a channel. +type Watcher struct { + Events chan Event + Errors chan error + done chan struct{} // Channel for sending a "quit message" to the reader goroutine + + kq int // File descriptor (as returned by the kqueue() syscall). + + mu sync.Mutex // Protects access to watcher data + watches map[string]int // Map of watched file descriptors (key: path). + externalWatches map[string]bool // Map of watches added by user of the library. + dirFlags map[string]uint32 // Map of watched directories to fflags used in kqueue. + paths map[int]pathInfo // Map file descriptors to path names for processing kqueue events. + fileExists map[string]bool // Keep track of if we know this file exists (to stop duplicate create events). + isClosed bool // Set to true when Close() is first called +} + +type pathInfo struct { + name string + isDir bool +} + +// NewWatcher establishes a new watcher with the underlying OS and begins waiting for events. +func NewWatcher() (*Watcher, error) { + kq, err := kqueue() + if err != nil { + return nil, err + } + + w := &Watcher{ + kq: kq, + watches: make(map[string]int), + dirFlags: make(map[string]uint32), + paths: make(map[int]pathInfo), + fileExists: make(map[string]bool), + externalWatches: make(map[string]bool), + Events: make(chan Event), + Errors: make(chan error), + done: make(chan struct{}), + } + + go w.readEvents() + return w, nil +} + +// Close removes all watches and closes the events channel. +func (w *Watcher) Close() error { + w.mu.Lock() + if w.isClosed { + w.mu.Unlock() + return nil + } + w.isClosed = true + + // copy paths to remove while locked + var pathsToRemove = make([]string, 0, len(w.watches)) + for name := range w.watches { + pathsToRemove = append(pathsToRemove, name) + } + w.mu.Unlock() + // unlock before calling Remove, which also locks + + for _, name := range pathsToRemove { + w.Remove(name) + } + + // send a "quit" message to the reader goroutine + close(w.done) + + return nil +} + +// Add starts watching the named file or directory (non-recursively). +func (w *Watcher) Add(name string) error { + w.mu.Lock() + w.externalWatches[name] = true + w.mu.Unlock() + _, err := w.addWatch(name, noteAllEvents) + return err +} + +// Remove stops watching the the named file or directory (non-recursively). +func (w *Watcher) Remove(name string) error { + name = filepath.Clean(name) + w.mu.Lock() + watchfd, ok := w.watches[name] + w.mu.Unlock() + if !ok { + return fmt.Errorf("can't remove non-existent kevent watch for: %s", name) + } + + const registerRemove = unix.EV_DELETE + if err := register(w.kq, []int{watchfd}, registerRemove, 0); err != nil { + return err + } + + unix.Close(watchfd) + + w.mu.Lock() + isDir := w.paths[watchfd].isDir + delete(w.watches, name) + delete(w.paths, watchfd) + delete(w.dirFlags, name) + w.mu.Unlock() + + // Find all watched paths that are in this directory that are not external. + if isDir { + var pathsToRemove []string + w.mu.Lock() + for _, path := range w.paths { + wdir, _ := filepath.Split(path.name) + if filepath.Clean(wdir) == name { + if !w.externalWatches[path.name] { + pathsToRemove = append(pathsToRemove, path.name) + } + } + } + w.mu.Unlock() + for _, name := range pathsToRemove { + // Since these are internal, not much sense in propagating error + // to the user, as that will just confuse them with an error about + // a path they did not explicitly watch themselves. + w.Remove(name) + } + } + + return nil +} + +// WatchList returns the directories and files that are being monitered. +func (w *Watcher) WatchList() []string { + w.mu.Lock() + defer w.mu.Unlock() + + entries := make([]string, 0, len(w.watches)) + for pathname := range w.watches { + entries = append(entries, pathname) + } + + return entries +} + +// Watch all events (except NOTE_EXTEND, NOTE_LINK, NOTE_REVOKE) +const noteAllEvents = unix.NOTE_DELETE | unix.NOTE_WRITE | unix.NOTE_ATTRIB | unix.NOTE_RENAME + +// keventWaitTime to block on each read from kevent +var keventWaitTime = durationToTimespec(100 * time.Millisecond) + +// addWatch adds name to the watched file set. +// The flags are interpreted as described in kevent(2). +// Returns the real path to the file which was added, if any, which may be different from the one passed in the case of symlinks. +func (w *Watcher) addWatch(name string, flags uint32) (string, error) { + var isDir bool + // Make ./name and name equivalent + name = filepath.Clean(name) + + w.mu.Lock() + if w.isClosed { + w.mu.Unlock() + return "", errors.New("kevent instance already closed") + } + watchfd, alreadyWatching := w.watches[name] + // We already have a watch, but we can still override flags. + if alreadyWatching { + isDir = w.paths[watchfd].isDir + } + w.mu.Unlock() + + if !alreadyWatching { + fi, err := os.Lstat(name) + if err != nil { + return "", err + } + + // Don't watch sockets. + if fi.Mode()&os.ModeSocket == os.ModeSocket { + return "", nil + } + + // Don't watch named pipes. + if fi.Mode()&os.ModeNamedPipe == os.ModeNamedPipe { + return "", nil + } + + // Follow Symlinks + // Unfortunately, Linux can add bogus symlinks to watch list without + // issue, and Windows can't do symlinks period (AFAIK). To maintain + // consistency, we will act like everything is fine. There will simply + // be no file events for broken symlinks. + // Hence the returns of nil on errors. + if fi.Mode()&os.ModeSymlink == os.ModeSymlink { + name, err = filepath.EvalSymlinks(name) + if err != nil { + return "", nil + } + + w.mu.Lock() + _, alreadyWatching = w.watches[name] + w.mu.Unlock() + + if alreadyWatching { + return name, nil + } + + fi, err = os.Lstat(name) + if err != nil { + return "", nil + } + } + + watchfd, err = unix.Open(name, openMode, 0700) + if watchfd == -1 { + return "", err + } + + isDir = fi.IsDir() + } + + const registerAdd = unix.EV_ADD | unix.EV_CLEAR | unix.EV_ENABLE + if err := register(w.kq, []int{watchfd}, registerAdd, flags); err != nil { + unix.Close(watchfd) + return "", err + } + + if !alreadyWatching { + w.mu.Lock() + w.watches[name] = watchfd + w.paths[watchfd] = pathInfo{name: name, isDir: isDir} + w.mu.Unlock() + } + + if isDir { + // Watch the directory if it has not been watched before, + // or if it was watched before, but perhaps only a NOTE_DELETE (watchDirectoryFiles) + w.mu.Lock() + + watchDir := (flags&unix.NOTE_WRITE) == unix.NOTE_WRITE && + (!alreadyWatching || (w.dirFlags[name]&unix.NOTE_WRITE) != unix.NOTE_WRITE) + // Store flags so this watch can be updated later + w.dirFlags[name] = flags + w.mu.Unlock() + + if watchDir { + if err := w.watchDirectoryFiles(name); err != nil { + return "", err + } + } + } + return name, nil +} + +// readEvents reads from kqueue and converts the received kevents into +// Event values that it sends down the Events channel. +func (w *Watcher) readEvents() { + eventBuffer := make([]unix.Kevent_t, 10) + +loop: + for { + // See if there is a message on the "done" channel + select { + case <-w.done: + break loop + default: + } + + // Get new events + kevents, err := read(w.kq, eventBuffer, &keventWaitTime) + // EINTR is okay, the syscall was interrupted before timeout expired. + if err != nil && err != unix.EINTR { + select { + case w.Errors <- err: + case <-w.done: + break loop + } + continue + } + + // Flush the events we received to the Events channel + for len(kevents) > 0 { + kevent := &kevents[0] + watchfd := int(kevent.Ident) + mask := uint32(kevent.Fflags) + w.mu.Lock() + path := w.paths[watchfd] + w.mu.Unlock() + event := newEvent(path.name, mask) + + if path.isDir && !(event.Op&Remove == Remove) { + // Double check to make sure the directory exists. This can happen when + // we do a rm -fr on a recursively watched folders and we receive a + // modification event first but the folder has been deleted and later + // receive the delete event + if _, err := os.Lstat(event.Name); os.IsNotExist(err) { + // mark is as delete event + event.Op |= Remove + } + } + + if event.Op&Rename == Rename || event.Op&Remove == Remove { + w.Remove(event.Name) + w.mu.Lock() + delete(w.fileExists, event.Name) + w.mu.Unlock() + } + + if path.isDir && event.Op&Write == Write && !(event.Op&Remove == Remove) { + w.sendDirectoryChangeEvents(event.Name) + } else { + // Send the event on the Events channel. + select { + case w.Events <- event: + case <-w.done: + break loop + } + } + + if event.Op&Remove == Remove { + // Look for a file that may have overwritten this. + // For example, mv f1 f2 will delete f2, then create f2. + if path.isDir { + fileDir := filepath.Clean(event.Name) + w.mu.Lock() + _, found := w.watches[fileDir] + w.mu.Unlock() + if found { + // make sure the directory exists before we watch for changes. When we + // do a recursive watch and perform rm -fr, the parent directory might + // have gone missing, ignore the missing directory and let the + // upcoming delete event remove the watch from the parent directory. + if _, err := os.Lstat(fileDir); err == nil { + w.sendDirectoryChangeEvents(fileDir) + } + } + } else { + filePath := filepath.Clean(event.Name) + if fileInfo, err := os.Lstat(filePath); err == nil { + w.sendFileCreatedEventIfNew(filePath, fileInfo) + } + } + } + + // Move to next event + kevents = kevents[1:] + } + } + + // cleanup + err := unix.Close(w.kq) + if err != nil { + // only way the previous loop breaks is if w.done was closed so we need to async send to w.Errors. + select { + case w.Errors <- err: + default: + } + } + close(w.Events) + close(w.Errors) +} + +// newEvent returns an platform-independent Event based on kqueue Fflags. +func newEvent(name string, mask uint32) Event { + e := Event{Name: name} + if mask&unix.NOTE_DELETE == unix.NOTE_DELETE { + e.Op |= Remove + } + if mask&unix.NOTE_WRITE == unix.NOTE_WRITE { + e.Op |= Write + } + if mask&unix.NOTE_RENAME == unix.NOTE_RENAME { + e.Op |= Rename + } + if mask&unix.NOTE_ATTRIB == unix.NOTE_ATTRIB { + e.Op |= Chmod + } + return e +} + +func newCreateEvent(name string) Event { + return Event{Name: name, Op: Create} +} + +// watchDirectoryFiles to mimic inotify when adding a watch on a directory +func (w *Watcher) watchDirectoryFiles(dirPath string) error { + // Get all files + files, err := ioutil.ReadDir(dirPath) + if err != nil { + return err + } + + for _, fileInfo := range files { + filePath := filepath.Join(dirPath, fileInfo.Name()) + filePath, err = w.internalWatch(filePath, fileInfo) + if err != nil { + return err + } + + w.mu.Lock() + w.fileExists[filePath] = true + w.mu.Unlock() + } + + return nil +} + +// sendDirectoryEvents searches the directory for newly created files +// and sends them over the event channel. This functionality is to have +// the BSD version of fsnotify match Linux inotify which provides a +// create event for files created in a watched directory. +func (w *Watcher) sendDirectoryChangeEvents(dirPath string) { + // Get all files + files, err := ioutil.ReadDir(dirPath) + if err != nil { + select { + case w.Errors <- err: + case <-w.done: + return + } + } + + // Search for new files + for _, fileInfo := range files { + filePath := filepath.Join(dirPath, fileInfo.Name()) + err := w.sendFileCreatedEventIfNew(filePath, fileInfo) + + if err != nil { + return + } + } +} + +// sendFileCreatedEvent sends a create event if the file isn't already being tracked. +func (w *Watcher) sendFileCreatedEventIfNew(filePath string, fileInfo os.FileInfo) (err error) { + w.mu.Lock() + _, doesExist := w.fileExists[filePath] + w.mu.Unlock() + if !doesExist { + // Send create event + select { + case w.Events <- newCreateEvent(filePath): + case <-w.done: + return + } + } + + // like watchDirectoryFiles (but without doing another ReadDir) + filePath, err = w.internalWatch(filePath, fileInfo) + if err != nil { + return err + } + + w.mu.Lock() + w.fileExists[filePath] = true + w.mu.Unlock() + + return nil +} + +func (w *Watcher) internalWatch(name string, fileInfo os.FileInfo) (string, error) { + if fileInfo.IsDir() { + // mimic Linux providing delete events for subdirectories + // but preserve the flags used if currently watching subdirectory + w.mu.Lock() + flags := w.dirFlags[name] + w.mu.Unlock() + + flags |= unix.NOTE_DELETE | unix.NOTE_RENAME + return w.addWatch(name, flags) + } + + // watch file to mimic Linux inotify + return w.addWatch(name, noteAllEvents) +} + +// kqueue creates a new kernel event queue and returns a descriptor. +func kqueue() (kq int, err error) { + kq, err = unix.Kqueue() + if kq == -1 { + return kq, err + } + return kq, nil +} + +// register events with the queue +func register(kq int, fds []int, flags int, fflags uint32) error { + changes := make([]unix.Kevent_t, len(fds)) + + for i, fd := range fds { + // SetKevent converts int to the platform-specific types: + unix.SetKevent(&changes[i], fd, unix.EVFILT_VNODE, flags) + changes[i].Fflags = fflags + } + + // register the events + success, err := unix.Kevent(kq, changes, nil, nil) + if success == -1 { + return err + } + return nil +} + +// read retrieves pending events, or waits until an event occurs. +// A timeout of nil blocks indefinitely, while 0 polls the queue. +func read(kq int, events []unix.Kevent_t, timeout *unix.Timespec) ([]unix.Kevent_t, error) { + n, err := unix.Kevent(kq, nil, events, timeout) + if err != nil { + return nil, err + } + return events[0:n], nil +} + +// durationToTimespec prepares a timeout value +func durationToTimespec(d time.Duration) unix.Timespec { + return unix.NsecToTimespec(d.Nanoseconds()) +} diff --git a/agent/vendor/github.com/fsnotify/fsnotify/open_mode_bsd.go b/agent/vendor/github.com/fsnotify/fsnotify/open_mode_bsd.go new file mode 100644 index 00000000000..36cc3845b6e --- /dev/null +++ b/agent/vendor/github.com/fsnotify/fsnotify/open_mode_bsd.go @@ -0,0 +1,12 @@ +// Copyright 2013 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +//go:build freebsd || openbsd || netbsd || dragonfly +// +build freebsd openbsd netbsd dragonfly + +package fsnotify + +import "golang.org/x/sys/unix" + +const openMode = unix.O_NONBLOCK | unix.O_RDONLY | unix.O_CLOEXEC diff --git a/agent/vendor/github.com/fsnotify/fsnotify/open_mode_darwin.go b/agent/vendor/github.com/fsnotify/fsnotify/open_mode_darwin.go new file mode 100644 index 00000000000..98cd8476ffb --- /dev/null +++ b/agent/vendor/github.com/fsnotify/fsnotify/open_mode_darwin.go @@ -0,0 +1,13 @@ +// Copyright 2013 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +//go:build darwin +// +build darwin + +package fsnotify + +import "golang.org/x/sys/unix" + +// note: this constant is not defined on BSD +const openMode = unix.O_EVTONLY | unix.O_CLOEXEC diff --git a/agent/vendor/github.com/fsnotify/fsnotify/windows.go b/agent/vendor/github.com/fsnotify/fsnotify/windows.go new file mode 100644 index 00000000000..02ce7deb0bb --- /dev/null +++ b/agent/vendor/github.com/fsnotify/fsnotify/windows.go @@ -0,0 +1,586 @@ +// Copyright 2011 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +//go:build windows +// +build windows + +package fsnotify + +import ( + "errors" + "fmt" + "os" + "path/filepath" + "reflect" + "runtime" + "sync" + "syscall" + "unsafe" +) + +// Watcher watches a set of files, delivering events to a channel. +type Watcher struct { + Events chan Event + Errors chan error + isClosed bool // Set to true when Close() is first called + mu sync.Mutex // Map access + port syscall.Handle // Handle to completion port + watches watchMap // Map of watches (key: i-number) + input chan *input // Inputs to the reader are sent on this channel + quit chan chan<- error +} + +// NewWatcher establishes a new watcher with the underlying OS and begins waiting for events. +func NewWatcher() (*Watcher, error) { + port, e := syscall.CreateIoCompletionPort(syscall.InvalidHandle, 0, 0, 0) + if e != nil { + return nil, os.NewSyscallError("CreateIoCompletionPort", e) + } + w := &Watcher{ + port: port, + watches: make(watchMap), + input: make(chan *input, 1), + Events: make(chan Event, 50), + Errors: make(chan error), + quit: make(chan chan<- error, 1), + } + go w.readEvents() + return w, nil +} + +// Close removes all watches and closes the events channel. +func (w *Watcher) Close() error { + if w.isClosed { + return nil + } + w.isClosed = true + + // Send "quit" message to the reader goroutine + ch := make(chan error) + w.quit <- ch + if err := w.wakeupReader(); err != nil { + return err + } + return <-ch +} + +// Add starts watching the named file or directory (non-recursively). +func (w *Watcher) Add(name string) error { + if w.isClosed { + return errors.New("watcher already closed") + } + in := &input{ + op: opAddWatch, + path: filepath.Clean(name), + flags: sysFSALLEVENTS, + reply: make(chan error), + } + w.input <- in + if err := w.wakeupReader(); err != nil { + return err + } + return <-in.reply +} + +// Remove stops watching the the named file or directory (non-recursively). +func (w *Watcher) Remove(name string) error { + in := &input{ + op: opRemoveWatch, + path: filepath.Clean(name), + reply: make(chan error), + } + w.input <- in + if err := w.wakeupReader(); err != nil { + return err + } + return <-in.reply +} + +// WatchList returns the directories and files that are being monitered. +func (w *Watcher) WatchList() []string { + w.mu.Lock() + defer w.mu.Unlock() + + entries := make([]string, 0, len(w.watches)) + for _, entry := range w.watches { + for _, watchEntry := range entry { + entries = append(entries, watchEntry.path) + } + } + + return entries +} + +const ( + // Options for AddWatch + sysFSONESHOT = 0x80000000 + sysFSONLYDIR = 0x1000000 + + // Events + sysFSACCESS = 0x1 + sysFSALLEVENTS = 0xfff + sysFSATTRIB = 0x4 + sysFSCLOSE = 0x18 + sysFSCREATE = 0x100 + sysFSDELETE = 0x200 + sysFSDELETESELF = 0x400 + sysFSMODIFY = 0x2 + sysFSMOVE = 0xc0 + sysFSMOVEDFROM = 0x40 + sysFSMOVEDTO = 0x80 + sysFSMOVESELF = 0x800 + + // Special events + sysFSIGNORED = 0x8000 + sysFSQOVERFLOW = 0x4000 +) + +func newEvent(name string, mask uint32) Event { + e := Event{Name: name} + if mask&sysFSCREATE == sysFSCREATE || mask&sysFSMOVEDTO == sysFSMOVEDTO { + e.Op |= Create + } + if mask&sysFSDELETE == sysFSDELETE || mask&sysFSDELETESELF == sysFSDELETESELF { + e.Op |= Remove + } + if mask&sysFSMODIFY == sysFSMODIFY { + e.Op |= Write + } + if mask&sysFSMOVE == sysFSMOVE || mask&sysFSMOVESELF == sysFSMOVESELF || mask&sysFSMOVEDFROM == sysFSMOVEDFROM { + e.Op |= Rename + } + if mask&sysFSATTRIB == sysFSATTRIB { + e.Op |= Chmod + } + return e +} + +const ( + opAddWatch = iota + opRemoveWatch +) + +const ( + provisional uint64 = 1 << (32 + iota) +) + +type input struct { + op int + path string + flags uint32 + reply chan error +} + +type inode struct { + handle syscall.Handle + volume uint32 + index uint64 +} + +type watch struct { + ov syscall.Overlapped + ino *inode // i-number + path string // Directory path + mask uint64 // Directory itself is being watched with these notify flags + names map[string]uint64 // Map of names being watched and their notify flags + rename string // Remembers the old name while renaming a file + buf [4096]byte +} + +type indexMap map[uint64]*watch +type watchMap map[uint32]indexMap + +func (w *Watcher) wakeupReader() error { + e := syscall.PostQueuedCompletionStatus(w.port, 0, 0, nil) + if e != nil { + return os.NewSyscallError("PostQueuedCompletionStatus", e) + } + return nil +} + +func getDir(pathname string) (dir string, err error) { + attr, e := syscall.GetFileAttributes(syscall.StringToUTF16Ptr(pathname)) + if e != nil { + return "", os.NewSyscallError("GetFileAttributes", e) + } + if attr&syscall.FILE_ATTRIBUTE_DIRECTORY != 0 { + dir = pathname + } else { + dir, _ = filepath.Split(pathname) + dir = filepath.Clean(dir) + } + return +} + +func getIno(path string) (ino *inode, err error) { + h, e := syscall.CreateFile(syscall.StringToUTF16Ptr(path), + syscall.FILE_LIST_DIRECTORY, + syscall.FILE_SHARE_READ|syscall.FILE_SHARE_WRITE|syscall.FILE_SHARE_DELETE, + nil, syscall.OPEN_EXISTING, + syscall.FILE_FLAG_BACKUP_SEMANTICS|syscall.FILE_FLAG_OVERLAPPED, 0) + if e != nil { + return nil, os.NewSyscallError("CreateFile", e) + } + var fi syscall.ByHandleFileInformation + if e = syscall.GetFileInformationByHandle(h, &fi); e != nil { + syscall.CloseHandle(h) + return nil, os.NewSyscallError("GetFileInformationByHandle", e) + } + ino = &inode{ + handle: h, + volume: fi.VolumeSerialNumber, + index: uint64(fi.FileIndexHigh)<<32 | uint64(fi.FileIndexLow), + } + return ino, nil +} + +// Must run within the I/O thread. +func (m watchMap) get(ino *inode) *watch { + if i := m[ino.volume]; i != nil { + return i[ino.index] + } + return nil +} + +// Must run within the I/O thread. +func (m watchMap) set(ino *inode, watch *watch) { + i := m[ino.volume] + if i == nil { + i = make(indexMap) + m[ino.volume] = i + } + i[ino.index] = watch +} + +// Must run within the I/O thread. +func (w *Watcher) addWatch(pathname string, flags uint64) error { + dir, err := getDir(pathname) + if err != nil { + return err + } + if flags&sysFSONLYDIR != 0 && pathname != dir { + return nil + } + ino, err := getIno(dir) + if err != nil { + return err + } + w.mu.Lock() + watchEntry := w.watches.get(ino) + w.mu.Unlock() + if watchEntry == nil { + if _, e := syscall.CreateIoCompletionPort(ino.handle, w.port, 0, 0); e != nil { + syscall.CloseHandle(ino.handle) + return os.NewSyscallError("CreateIoCompletionPort", e) + } + watchEntry = &watch{ + ino: ino, + path: dir, + names: make(map[string]uint64), + } + w.mu.Lock() + w.watches.set(ino, watchEntry) + w.mu.Unlock() + flags |= provisional + } else { + syscall.CloseHandle(ino.handle) + } + if pathname == dir { + watchEntry.mask |= flags + } else { + watchEntry.names[filepath.Base(pathname)] |= flags + } + if err = w.startRead(watchEntry); err != nil { + return err + } + if pathname == dir { + watchEntry.mask &= ^provisional + } else { + watchEntry.names[filepath.Base(pathname)] &= ^provisional + } + return nil +} + +// Must run within the I/O thread. +func (w *Watcher) remWatch(pathname string) error { + dir, err := getDir(pathname) + if err != nil { + return err + } + ino, err := getIno(dir) + if err != nil { + return err + } + w.mu.Lock() + watch := w.watches.get(ino) + w.mu.Unlock() + if watch == nil { + return fmt.Errorf("can't remove non-existent watch for: %s", pathname) + } + if pathname == dir { + w.sendEvent(watch.path, watch.mask&sysFSIGNORED) + watch.mask = 0 + } else { + name := filepath.Base(pathname) + w.sendEvent(filepath.Join(watch.path, name), watch.names[name]&sysFSIGNORED) + delete(watch.names, name) + } + return w.startRead(watch) +} + +// Must run within the I/O thread. +func (w *Watcher) deleteWatch(watch *watch) { + for name, mask := range watch.names { + if mask&provisional == 0 { + w.sendEvent(filepath.Join(watch.path, name), mask&sysFSIGNORED) + } + delete(watch.names, name) + } + if watch.mask != 0 { + if watch.mask&provisional == 0 { + w.sendEvent(watch.path, watch.mask&sysFSIGNORED) + } + watch.mask = 0 + } +} + +// Must run within the I/O thread. +func (w *Watcher) startRead(watch *watch) error { + if e := syscall.CancelIo(watch.ino.handle); e != nil { + w.Errors <- os.NewSyscallError("CancelIo", e) + w.deleteWatch(watch) + } + mask := toWindowsFlags(watch.mask) + for _, m := range watch.names { + mask |= toWindowsFlags(m) + } + if mask == 0 { + if e := syscall.CloseHandle(watch.ino.handle); e != nil { + w.Errors <- os.NewSyscallError("CloseHandle", e) + } + w.mu.Lock() + delete(w.watches[watch.ino.volume], watch.ino.index) + w.mu.Unlock() + return nil + } + e := syscall.ReadDirectoryChanges(watch.ino.handle, &watch.buf[0], + uint32(unsafe.Sizeof(watch.buf)), false, mask, nil, &watch.ov, 0) + if e != nil { + err := os.NewSyscallError("ReadDirectoryChanges", e) + if e == syscall.ERROR_ACCESS_DENIED && watch.mask&provisional == 0 { + // Watched directory was probably removed + if w.sendEvent(watch.path, watch.mask&sysFSDELETESELF) { + if watch.mask&sysFSONESHOT != 0 { + watch.mask = 0 + } + } + err = nil + } + w.deleteWatch(watch) + w.startRead(watch) + return err + } + return nil +} + +// readEvents reads from the I/O completion port, converts the +// received events into Event objects and sends them via the Events channel. +// Entry point to the I/O thread. +func (w *Watcher) readEvents() { + var ( + n, key uint32 + ov *syscall.Overlapped + ) + runtime.LockOSThread() + + for { + e := syscall.GetQueuedCompletionStatus(w.port, &n, &key, &ov, syscall.INFINITE) + watch := (*watch)(unsafe.Pointer(ov)) + + if watch == nil { + select { + case ch := <-w.quit: + w.mu.Lock() + var indexes []indexMap + for _, index := range w.watches { + indexes = append(indexes, index) + } + w.mu.Unlock() + for _, index := range indexes { + for _, watch := range index { + w.deleteWatch(watch) + w.startRead(watch) + } + } + var err error + if e := syscall.CloseHandle(w.port); e != nil { + err = os.NewSyscallError("CloseHandle", e) + } + close(w.Events) + close(w.Errors) + ch <- err + return + case in := <-w.input: + switch in.op { + case opAddWatch: + in.reply <- w.addWatch(in.path, uint64(in.flags)) + case opRemoveWatch: + in.reply <- w.remWatch(in.path) + } + default: + } + continue + } + + switch e { + case syscall.ERROR_MORE_DATA: + if watch == nil { + w.Errors <- errors.New("ERROR_MORE_DATA has unexpectedly null lpOverlapped buffer") + } else { + // The i/o succeeded but the buffer is full. + // In theory we should be building up a full packet. + // In practice we can get away with just carrying on. + n = uint32(unsafe.Sizeof(watch.buf)) + } + case syscall.ERROR_ACCESS_DENIED: + // Watched directory was probably removed + w.sendEvent(watch.path, watch.mask&sysFSDELETESELF) + w.deleteWatch(watch) + w.startRead(watch) + continue + case syscall.ERROR_OPERATION_ABORTED: + // CancelIo was called on this handle + continue + default: + w.Errors <- os.NewSyscallError("GetQueuedCompletionPort", e) + continue + case nil: + } + + var offset uint32 + for { + if n == 0 { + w.Events <- newEvent("", sysFSQOVERFLOW) + w.Errors <- errors.New("short read in readEvents()") + break + } + + // Point "raw" to the event in the buffer + raw := (*syscall.FileNotifyInformation)(unsafe.Pointer(&watch.buf[offset])) + // TODO: Consider using unsafe.Slice that is available from go1.17 + // https://stackoverflow.com/questions/51187973/how-to-create-an-array-or-a-slice-from-an-array-unsafe-pointer-in-golang + // instead of using a fixed syscall.MAX_PATH buf, we create a buf that is the size of the path name + size := int(raw.FileNameLength / 2) + var buf []uint16 + sh := (*reflect.SliceHeader)(unsafe.Pointer(&buf)) + sh.Data = uintptr(unsafe.Pointer(&raw.FileName)) + sh.Len = size + sh.Cap = size + name := syscall.UTF16ToString(buf) + fullname := filepath.Join(watch.path, name) + + var mask uint64 + switch raw.Action { + case syscall.FILE_ACTION_REMOVED: + mask = sysFSDELETESELF + case syscall.FILE_ACTION_MODIFIED: + mask = sysFSMODIFY + case syscall.FILE_ACTION_RENAMED_OLD_NAME: + watch.rename = name + case syscall.FILE_ACTION_RENAMED_NEW_NAME: + if watch.names[watch.rename] != 0 { + watch.names[name] |= watch.names[watch.rename] + delete(watch.names, watch.rename) + mask = sysFSMOVESELF + } + } + + sendNameEvent := func() { + if w.sendEvent(fullname, watch.names[name]&mask) { + if watch.names[name]&sysFSONESHOT != 0 { + delete(watch.names, name) + } + } + } + if raw.Action != syscall.FILE_ACTION_RENAMED_NEW_NAME { + sendNameEvent() + } + if raw.Action == syscall.FILE_ACTION_REMOVED { + w.sendEvent(fullname, watch.names[name]&sysFSIGNORED) + delete(watch.names, name) + } + if w.sendEvent(fullname, watch.mask&toFSnotifyFlags(raw.Action)) { + if watch.mask&sysFSONESHOT != 0 { + watch.mask = 0 + } + } + if raw.Action == syscall.FILE_ACTION_RENAMED_NEW_NAME { + fullname = filepath.Join(watch.path, watch.rename) + sendNameEvent() + } + + // Move to the next event in the buffer + if raw.NextEntryOffset == 0 { + break + } + offset += raw.NextEntryOffset + + // Error! + if offset >= n { + w.Errors <- errors.New("Windows system assumed buffer larger than it is, events have likely been missed.") + break + } + } + + if err := w.startRead(watch); err != nil { + w.Errors <- err + } + } +} + +func (w *Watcher) sendEvent(name string, mask uint64) bool { + if mask == 0 { + return false + } + event := newEvent(name, uint32(mask)) + select { + case ch := <-w.quit: + w.quit <- ch + case w.Events <- event: + } + return true +} + +func toWindowsFlags(mask uint64) uint32 { + var m uint32 + if mask&sysFSACCESS != 0 { + m |= syscall.FILE_NOTIFY_CHANGE_LAST_ACCESS + } + if mask&sysFSMODIFY != 0 { + m |= syscall.FILE_NOTIFY_CHANGE_LAST_WRITE + } + if mask&sysFSATTRIB != 0 { + m |= syscall.FILE_NOTIFY_CHANGE_ATTRIBUTES + } + if mask&(sysFSMOVE|sysFSCREATE|sysFSDELETE) != 0 { + m |= syscall.FILE_NOTIFY_CHANGE_FILE_NAME | syscall.FILE_NOTIFY_CHANGE_DIR_NAME + } + return m +} + +func toFSnotifyFlags(action uint32) uint64 { + switch action { + case syscall.FILE_ACTION_ADDED: + return sysFSCREATE + case syscall.FILE_ACTION_REMOVED: + return sysFSDELETE + case syscall.FILE_ACTION_MODIFIED: + return sysFSMODIFY + case syscall.FILE_ACTION_RENAMED_OLD_NAME: + return sysFSMOVEDFROM + case syscall.FILE_ACTION_RENAMED_NEW_NAME: + return sysFSMOVEDTO + } + return 0 +} diff --git a/agent/vendor/modules.txt b/agent/vendor/modules.txt index 0ce556252a8..e928cc808d1 100644 --- a/agent/vendor/modules.txt +++ b/agent/vendor/modules.txt @@ -141,6 +141,8 @@ github.com/docker/go-connections/sockets github.com/docker/go-connections/tlsconfig # github.com/docker/go-units v0.4.0 github.com/docker/go-units +# github.com/fsnotify/fsnotify v1.5.4 +github.com/fsnotify/fsnotify # github.com/godbus/dbus/v5 v5.0.6 github.com/godbus/dbus/v5 # github.com/gogo/protobuf v1.3.2