Merge pull request #2096 from AkihiroSuda/bump-up-rootlesskit

go.mod

@@ -86,7 +86,7 @@ require (
 	github.com/gogo/googleapis v1.3.0 // indirect
 	github.com/google/tcpproxy v0.0.0-20180808230851-dfa16c61dad2
 	github.com/google/uuid v1.1.1
-	github.com/gorilla/mux v1.7.3
+	github.com/gorilla/mux v1.7.4
 	github.com/gorilla/websocket v1.4.1
 	github.com/kubernetes-sigs/cri-tools v0.0.0-00010101000000-000000000000
 	github.com/lib/pq v1.1.1
@@ -102,16 +102,16 @@ require (
 	github.com/rancher/spur v0.0.0-20200617165101-8702c8e4ce7a
 	github.com/rancher/wrangler v0.6.1
 	github.com/rancher/wrangler-api v0.6.0
-	github.com/rootless-containers/rootlesskit v0.7.2
-	github.com/sirupsen/logrus v1.4.2
+	github.com/rootless-containers/rootlesskit v0.10.0
+	github.com/sirupsen/logrus v1.6.0
 	github.com/spf13/pflag v1.0.5
 	github.com/tchap/go-patricia v2.3.0+incompatible // indirect
 	github.com/urfave/cli v1.22.2
 	// 54ba958 is v3.4.9
 	go.etcd.io/etcd v0.5.0-alpha.5.0.20200520232829-54ba9589114f
 	golang.org/x/crypto v0.0.0-20200220183623-bac4c82f6975
-	golang.org/x/net v0.0.0-20191204025024-5ee1b9f4859a
-	golang.org/x/sys v0.0.0-20191204072324-ce4227a45e2e
+	golang.org/x/net v0.0.0-20200506145744-7e3656a0809f
+	golang.org/x/sys v0.0.0-20200501145240-bc7a7d42d5c3
 	google.golang.org/grpc v1.26.0
 	gopkg.in/yaml.v2 v2.3.0
 	k8s.io/api v0.18.5

pkg/rootless/rootless.go

@@ -105,8 +105,13 @@ func createParentOpt(stateDir string) (*parent.Opt, error) {
 	if _, err := exec.LookPath(binary); err != nil {
 		return nil, err
 	}
-	opt.NetworkDriver = slirp4netns.NewParentDriver(binary, mtu, ipnet, disableHostLoopback, "", false, false)
-	opt.PortDriver, err = portbuiltin.NewParentDriver(&logrusDebugWriter{}, stateDir)
+	debugWriter := &logrusDebugWriter{}
+	opt.NetworkDriver, err = slirp4netns.NewParentDriver(debugWriter, binary, mtu, ipnet, disableHostLoopback, "", false, false)
+	if err != nil {
+		return nil, err
+	}
+
+	opt.PortDriver, err = portbuiltin.NewParentDriver(debugWriter, stateDir)
 	if err != nil {
 		return nil, err
 	}

vendor/github.com/gorilla/mux/README.md

 # gorilla/mux
 
 [![GoDoc](https://godoc.org/github.com/gorilla/mux?status.svg)](https://godoc.org/github.com/gorilla/mux)
-[![Build Status](https://travis-ci.org/gorilla/mux.svg?branch=master)](https://travis-ci.org/gorilla/mux)
 [![CircleCI](https://circleci.com/gh/gorilla/mux.svg?style=svg)](https://circleci.com/gh/gorilla/mux)
 [![Sourcegraph](https://sourcegraph.com/github.com/gorilla/mux/-/badge.svg)](https://sourcegraph.com/github.com/gorilla/mux?badge)
 
-![Gorilla Logo](http://www.gorillatoolkit.org/static/images/gorilla-icon-64.png)
+![Gorilla Logo](https://cloud-cdn.questionable.services/gorilla-icon-64.png)
 
 https://www.gorillatoolkit.org/pkg/mux
 
@@ -26,6 +25,7 @@ The name mux stands for "HTTP request multiplexer". Like the standard `http.Serv
 * [Examples](#examples)
 * [Matching Routes](#matching-routes)
 * [Static Files](#static-files)
+* [Serving Single Page Applications](#serving-single-page-applications) (e.g. React, Vue, Ember.js, etc.)
 * [Registered URLs](#registered-urls)
 * [Walking Routes](#walking-routes)
 * [Graceful Shutdown](#graceful-shutdown)
@@ -212,6 +212,93 @@ func main() {
 }
 ```
 
+### Serving Single Page Applications
+
+Most of the time it makes sense to serve your SPA on a separate web server from your API,
+but sometimes it's desirable to serve them both from one place. It's possible to write a simple
+handler for serving your SPA (for use with React Router's [BrowserRouter](https://reacttraining.com/react-router/web/api/BrowserRouter) for example), and leverage
+mux's powerful routing for your API endpoints.
+
+```go
+package main
+
+import (
+	"encoding/json"
+	"log"
+	"net/http"
+	"os"
+	"path/filepath"
+	"time"
+
+	"github.com/gorilla/mux"
+)
+
+// spaHandler implements the http.Handler interface, so we can use it
+// to respond to HTTP requests. The path to the static directory and
+// path to the index file within that static directory are used to
+// serve the SPA in the given static directory.
+type spaHandler struct {
+	staticPath string
+	indexPath  string
+}
+
+// ServeHTTP inspects the URL path to locate a file within the static dir
+// on the SPA handler. If a file is found, it will be served. If not, the
+// file located at the index path on the SPA handler will be served. This
+// is suitable behavior for serving an SPA (single page application).
+func (h spaHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
+    // get the absolute path to prevent directory traversal
+	path, err := filepath.Abs(r.URL.Path)
+	if err != nil {
+        // if we failed to get the absolute path respond with a 400 bad request
+        // and stop
+		http.Error(w, err.Error(), http.StatusBadRequest)
+		return
+	}
+
+    // prepend the path with the path to the static directory
+	path = filepath.Join(h.staticPath, path)
+
+    // check whether a file exists at the given path
+	_, err = os.Stat(path)
+	if os.IsNotExist(err) {
+		// file does not exist, serve index.html
+		http.ServeFile(w, r, filepath.Join(h.staticPath, h.indexPath))
+		return
+	} else if err != nil {
+        // if we got an error (that wasn't that the file doesn't exist) stating the
+        // file, return a 500 internal server error and stop
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+    // otherwise, use http.FileServer to serve the static dir
+	http.FileServer(http.Dir(h.staticPath)).ServeHTTP(w, r)
+}
+
+func main() {
+	router := mux.NewRouter()
+
+	router.HandleFunc("/api/health", func(w http.ResponseWriter, r *http.Request) {
+		// an example API handler
+		json.NewEncoder(w).Encode(map[string]bool{"ok": true})
+	})
+
+	spa := spaHandler{staticPath: "build", indexPath: "index.html"}
+	router.PathPrefix("/").Handler(spa)
+
+	srv := &http.Server{
+		Handler: router,
+		Addr:    "127.0.0.1:8000",
+		// Good practice: enforce timeouts for servers you create!
+		WriteTimeout: 15 * time.Second,
+		ReadTimeout:  15 * time.Second,
+	}
+
+	log.Fatal(srv.ListenAndServe())
+}
+```
+
 ### Registered URLs
 
 Now let's see how to build registered URLs.

vendor/github.com/gorilla/mux/context.go

-package mux
-
-import (
-	"context"
-	"net/http"
-)
-
-func contextGet(r *http.Request, key interface{}) interface{} {
-	return r.Context().Value(key)
-}
-
-func contextSet(r *http.Request, key, val interface{}) *http.Request {
-	if val == nil {
-		return r
-	}
-
-	return r.WithContext(context.WithValue(r.Context(), key, val))
-}

vendor/github.com/gorilla/mux/go.mod

 module github.com/gorilla/mux
+
+go 1.12

vendor/github.com/gorilla/mux/middleware.go

@@ -58,22 +58,17 @@ func CORSMethodMiddleware(r *Router) MiddlewareFunc {
 func getAllMethodsForRoute(r *Router, req *http.Request) ([]string, error) {
 	var allMethods []string
 
-	err := r.Walk(func(route *Route, _ *Router, _ []*Route) error {
-		for _, m := range route.matchers {
-			if _, ok := m.(*routeRegexp); ok {
-				if m.Match(req, &RouteMatch{}) {
-					methods, err := route.GetMethods()
-					if err != nil {
-						return err
-					}
-
-					allMethods = append(allMethods, methods...)
-				}
-				break
+	for _, route := range r.routes {
+		var match RouteMatch
+		if route.Match(req, &match) || match.MatchErr == ErrMethodMismatch {
+			methods, err := route.GetMethods()
+			if err != nil {
+				return nil, err
 			}
+
+			allMethods = append(allMethods, methods...)
 		}
-		return nil
-	})
+	}
 
-	return allMethods, err
+	return allMethods, nil
 }

vendor/github.com/gorilla/mux/mux.go

@@ -5,6 +5,7 @@
 package mux
 
 import (
+	"context"
 	"errors"
 	"fmt"
 	"net/http"
@@ -58,8 +59,7 @@ type Router struct {
 
 	// If true, do not clear the request context after handling the request.
 	//
-	// Deprecated: No effect when go1.7+ is used, since the context is stored
-	// on the request itself.
+	// Deprecated: No effect, since the context is stored on the request itself.
 	KeepContext bool
 
 	// Slice of middlewares to be called after a match is found
@@ -111,10 +111,8 @@ func copyRouteConf(r routeConf) routeConf {
 		c.regexp.queries = append(c.regexp.queries, copyRouteRegexp(q))
 	}
 
-	c.matchers = make([]matcher, 0, len(r.matchers))
-	for _, m := range r.matchers {
-		c.matchers = append(c.matchers, m)
-	}
+	c.matchers = make([]matcher, len(r.matchers))
+	copy(c.matchers, r.matchers)
 
 	return c
 }
@@ -197,8 +195,8 @@ func (r *Router) ServeHTTP(w http.ResponseWriter, req *http.Request) {
 	var handler http.Handler
 	if r.Match(req, &match) {
 		handler = match.Handler
-		req = setVars(req, match.Vars)
-		req = setCurrentRoute(req, match.Route)
+		req = requestWithVars(req, match.Vars)
+		req = requestWithRoute(req, match.Route)
 	}
 
 	if handler == nil && match.MatchErr == ErrMethodMismatch {
@@ -428,7 +426,7 @@ const (
 
 // Vars returns the route variables for the current request, if any.
 func Vars(r *http.Request) map[string]string {
-	if rv := contextGet(r, varsKey); rv != nil {
+	if rv := r.Context().Value(varsKey); rv != nil {
 		return rv.(map[string]string)
 	}
 	return nil
@@ -440,18 +438,20 @@ func Vars(r *http.Request) map[string]string {
 // after the handler returns, unless the KeepContext option is set on the
 // Router.
 func CurrentRoute(r *http.Request) *Route {
-	if rv := contextGet(r, routeKey); rv != nil {
+	if rv := r.Context().Value(routeKey); rv != nil {
 		return rv.(*Route)
 	}
 	return nil
 }
 
-func setVars(r *http.Request, val interface{}) *http.Request {
-	return contextSet(r, varsKey, val)
+func requestWithVars(r *http.Request, vars map[string]string) *http.Request {
+	ctx := context.WithValue(r.Context(), varsKey, vars)
+	return r.WithContext(ctx)
 }
 
-func setCurrentRoute(r *http.Request, val interface{}) *http.Request {
-	return contextSet(r, routeKey, val)
+func requestWithRoute(r *http.Request, route *Route) *http.Request {
+	ctx := context.WithValue(r.Context(), routeKey, route)
+	return r.WithContext(ctx)
 }
 
 // ----------------------------------------------------------------------------

vendor/github.com/gorilla/mux/regexp.go

@@ -181,21 +181,21 @@ func (r *routeRegexp) Match(req *http.Request, match *RouteMatch) bool {
 			}
 		}
 		return r.regexp.MatchString(host)
-	} else {
-		if r.regexpType == regexpTypeQuery {
-			return r.matchQueryString(req)
-		}
-		path := req.URL.Path
-		if r.options.useEncodedPath {
-			path = req.URL.EscapedPath()
-		}
-		return r.regexp.MatchString(path)
 	}
+
+	if r.regexpType == regexpTypeQuery {
+		return r.matchQueryString(req)
+	}
+	path := req.URL.Path
+	if r.options.useEncodedPath {
+		path = req.URL.EscapedPath()
+	}
+	return r.regexp.MatchString(path)
 }
 
 // url builds a URL part using the given values.
 func (r *routeRegexp) url(values map[string]string) (string, error) {
-	urlValues := make([]interface{}, len(r.varsN))
+	urlValues := make([]interface{}, len(r.varsN), len(r.varsN))
 	for k, v := range r.varsN {
 		value, ok := values[v]
 		if !ok {
@@ -230,14 +230,51 @@ func (r *routeRegexp) getURLQuery(req *http.Request) string {
 		return ""
 	}
 	templateKey := strings.SplitN(r.template, "=", 2)[0]
-	for key, vals := range req.URL.Query() {
-		if key == templateKey && len(vals) > 0 {
-			return key + "=" + vals[0]
-		}
+	val, ok := findFirstQueryKey(req.URL.RawQuery, templateKey)
+	if ok {
+		return templateKey + "=" + val
 	}
 	return ""
 }
 
+// findFirstQueryKey returns the same result as (*url.URL).Query()[key][0].
+// If key was not found, empty string and false is returned.
+func findFirstQueryKey(rawQuery, key string) (value string, ok bool) {
+	query := []byte(rawQuery)
+	for len(query) > 0 {
+		foundKey := query
+		if i := bytes.IndexAny(foundKey, "&;"); i >= 0 {
+			foundKey, query = foundKey[:i], foundKey[i+1:]
+		} else {
+			query = query[:0]
+		}
+		if len(foundKey) == 0 {
+			continue
+		}
+		var value []byte
+		if i := bytes.IndexByte(foundKey, '='); i >= 0 {
+			foundKey, value = foundKey[:i], foundKey[i+1:]
+		}
+		if len(foundKey) < len(key) {
+			// Cannot possibly be key.
+			continue
+		}
+		keyString, err := url.QueryUnescape(string(foundKey))
+		if err != nil {
+			continue
+		}
+		if keyString != key {
+			continue
+		}
+		valueString, err := url.QueryUnescape(string(value))
+		if err != nil {
+			continue
+		}
+		return valueString, true
+	}
+	return "", false
+}
+
 func (r *routeRegexp) matchQueryString(req *http.Request) bool {
 	return r.regexp.MatchString(r.getURLQuery(req))
 }

vendor/github.com/gorilla/mux/route.go

@@ -74,7 +74,7 @@ func (r *Route) Match(req *http.Request, match *RouteMatch) bool {
 		return false
 	}
 
-	if match.MatchErr == ErrMethodMismatch {
+	if match.MatchErr == ErrMethodMismatch && r.handler != nil {
 		// We found a route which matches request method, clear MatchErr
 		match.MatchErr = nil
 		// Then override the mis-matched handler
@@ -412,11 +412,30 @@ func (r *Route) Queries(pairs ...string) *Route {
 type schemeMatcher []string
 
 func (m schemeMatcher) Match(r *http.Request, match *RouteMatch) bool {
-	return matchInArray(m, r.URL.Scheme)
+	scheme := r.URL.Scheme
+	// https://golang.org/pkg/net/http/#Request
+	// "For [most] server requests, fields other than Path and RawQuery will be
+	// empty."
+	// Since we're an http muxer, the scheme is either going to be http or https
+	// though, so we can just set it based on the tls termination state.
+	if scheme == "" {
+		if r.TLS == nil {
+			scheme = "http"
+		} else {
+			scheme = "https"
+		}
+	}
+	return matchInArray(m, scheme)
 }
 
 // Schemes adds a matcher for URL schemes.
 // It accepts a sequence of schemes to be matched, e.g.: "http", "https".
+// If the request's URL has a scheme set, it will be matched against.
+// Generally, the URL scheme will only be set if a previous handler set it,
+// such as the ProxyHeaders handler from gorilla/handlers.
+// If unset, the scheme will be determined based on the request's TLS
+// termination state.
+// The first argument to Schemes will be used when constructing a route URL.
 func (r *Route) Schemes(schemes ...string) *Route {
 	for k, v := range schemes {
 		schemes[k] = strings.ToLower(v)
@@ -493,8 +512,8 @@ func (r *Route) Subrouter() *Router {
 // This also works for host variables:
 //
 //     r := mux.NewRouter()
-//     r.Host("{subdomain}.domain.com").
-//       HandleFunc("/articles/{category}/{id:[0-9]+}", ArticleHandler).
+//     r.HandleFunc("/articles/{category}/{id:[0-9]+}", ArticleHandler).
+//       Host("{subdomain}.domain.com").
 //       Name("article")
 //
 //     // url.String() will be "http://news.domain.com/articles/technology/42"
@@ -502,6 +521,13 @@ func (r *Route) Subrouter() *Router {
 //                                      "category", "technology",
 //                                      "id", "42")
 //
+// The scheme of the resulting url will be the first argument that was passed to Schemes:
+//
+//     // url.String() will be "https://example.com"
+//     r := mux.NewRouter()
+//     url, err := r.Host("example.com")
+//                  .Schemes("https", "http").URL()
+//
 // All variables defined in the route are required, and their values must
 // conform to the corresponding patterns.
 func (r *Route) URL(pairs ...string) (*url.URL, error) {
@@ -635,7 +661,7 @@ func (r *Route) GetQueriesRegexp() ([]string, error) {
 	if r.regexp.queries == nil {
 		return nil, errors.New("mux: route doesn't have queries")
 	}
-	var queries []string
+	queries := make([]string, 0, len(r.regexp.queries))
 	for _, query := range r.regexp.queries {
 		queries = append(queries, query.regexp.String())
 	}
@@ -654,7 +680,7 @@ func (r *Route) GetQueriesTemplates() ([]string, error) {
 	if r.regexp.queries == nil {
 		return nil, errors.New("mux: route doesn't have queries")
 	}
-	var queries []string
+	queries := make([]string, 0, len(r.regexp.queries))
 	for _, query := range r.regexp.queries {
 		queries = append(queries, query.template)
 	}

vendor/github.com/gorilla/mux/test_helpers.go

@@ -15,5 +15,5 @@ import "net/http"
 // can be set by making a route that captures the required variables,
 // starting a server and sending the request to that server.
 func SetURLVars(r *http.Request, val map[string]string) *http.Request {
-	return setVars(r, val)
+	return requestWithVars(r, val)
 }

vendor/github.com/konsorten/go-windows-terminal-sequences/README.md

@@ -27,6 +27,7 @@ We thank all the authors who provided code to this library:
 
 * Felix Kollmann
 * Nicolas Perraut
+* @dirty49374
 
 ## License
 

vendor/github.com/konsorten/go-windows-terminal-sequences/sequences.go

@@ -4,7 +4,6 @@ package sequences
 
 import (
 	"syscall"
-	"unsafe"
 )
 
 var (
@@ -27,7 +26,7 @@ func EnableVirtualTerminalProcessing(stream syscall.Handle, enable bool) error {
 		mode &^= ENABLE_VIRTUAL_TERMINAL_PROCESSING
 	}
 
-	ret, _, err := setConsoleMode.Call(uintptr(unsafe.Pointer(stream)), uintptr(mode))
+	ret, _, err := setConsoleMode.Call(uintptr(stream), uintptr(mode))
 	if ret == 0 {
 		return err
 	}

vendor/github.com/moby/sys/mountinfo/go.mod

+module github.com/moby/sys/mountinfo
+
+go 1.14

vendor/github.com/moby/sys/mountinfo/mountinfo.go

+package mountinfo
+
+import "io"
+
+// GetMounts retrieves a list of mounts for the current running process,
+// with an optional filter applied (use nil for no filter).
+func GetMounts(f FilterFunc) ([]*Info, error) {
+	return parseMountTable(f)
+}
+
+// GetMountsFromReader retrieves a list of mounts from the
+// reader provided, with an optional filter applied (use nil
+// for no filter). This can be useful in tests or benchmarks
+// that provide a fake mountinfo data.
+func GetMountsFromReader(reader io.Reader, f FilterFunc) ([]*Info, error) {
+	return parseInfoFile(reader, f)
+}
+
+// Mounted determines if a specified mountpoint has been mounted.
+// On Linux it looks at /proc/self/mountinfo.
+func Mounted(mountpoint string) (bool, error) {
+	entries, err := GetMounts(SingleEntryFilter(mountpoint))
+	if err != nil {
+		return false, err
+	}
+
+	return len(entries) > 0, nil
+}
+
+// Info reveals information about a particular mounted filesystem. This
+// struct is populated from the content in the /proc/<pid>/mountinfo file.
+type Info struct {
+	// ID is a unique identifier of the mount (may be reused after umount).
+	ID int
+
+	// Parent indicates the ID of the mount parent (or of self for the top of the
+	// mount tree).
+	Parent int
+
+	// Major indicates one half of the device ID which identifies the device class.
+	Major int
+
+	// Minor indicates one half of the device ID which identifies a specific
+	// instance of device.
+	Minor int
+
+	// Root of the mount within the filesystem.
+	Root string
+
+	// Mountpoint indicates the mount point relative to the process's root.
+	Mountpoint string
+
+	// Opts represents mount-specific options.
+	Opts string
+
+	// Optional represents optional fields.
+	Optional string
+
+	// Fstype indicates the type of filesystem, such as EXT3.
+	Fstype string
+
+	// Source indicates filesystem specific information or "none".
+	Source string
+
+	// VfsOpts represents per super block options.
+	VfsOpts string
+}

vendor/github.com/moby/sys/mountinfo/mountinfo_filters.go

+package mountinfo
+
+import "strings"
+
+// FilterFunc is a type defining a callback function for GetMount(),
+// used to filter out mountinfo entries we're not interested in,
+// and/or stop further processing if we found what we wanted.
+//
+// It takes a pointer to the Info struct (not fully populated,
+// currently only Mountpoint, Fstype, Source, and (on Linux)
+// VfsOpts are filled in), and returns two booleans:
+//
+//  - skip: true if the entry should be skipped
+//  - stop: true if parsing should be stopped after the entry
+type FilterFunc func(*Info) (skip, stop bool)
+
+// PrefixFilter discards all entries whose mount points
+// do not start with a specific prefix
+func PrefixFilter(prefix string) FilterFunc {
+	return func(m *Info) (bool, bool) {
+		skip := !strings.HasPrefix(m.Mountpoint, prefix)
+		return skip, false
+	}
+}
+
+// SingleEntryFilter looks for a specific entry
+func SingleEntryFilter(mp string) FilterFunc {
+	return func(m *Info) (bool, bool) {
+		if m.Mountpoint == mp {
+			return false, true // don't skip, stop now
+		}
+		return true, false // skip, keep going
+	}
+}
+
+// ParentsFilter returns all entries whose mount points
+// can be parents of a path specified, discarding others.
+//
+// For example, given `/var/lib/docker/something`, entries
+// like `/var/lib/docker`, `/var` and `/` are returned.
+func ParentsFilter(path string) FilterFunc {
+	return func(m *Info) (bool, bool) {
+		skip := !strings.HasPrefix(path, m.Mountpoint)
+		return skip, false
+	}
+}
+
+// FstypeFilter returns all entries that match provided fstype(s).
+func FstypeFilter(fstype ...string) FilterFunc {
+	return func(m *Info) (bool, bool) {
+		for _, t := range fstype {
+			if m.Fstype == t {
+				return false, false // don't skeep, keep going
+			}
+		}
+		return true, false // skip, keep going
+	}
+}

vendor/github.com/moby/sys/mountinfo/mountinfo_freebsd.go

+package mountinfo
+
+/*
+#include <sys/param.h>
+#include <sys/ucred.h>
+#include <sys/mount.h>
+*/
+import "C"
+
+import (
+	"fmt"
+	"reflect"
+	"unsafe"
+)
+
+// parseMountTable returns information about mounted filesystems
+func parseMountTable(filter FilterFunc) ([]*Info, error) {
+	var rawEntries *C.struct_statfs
+
+	count := int(C.getmntinfo(&rawEntries, C.MNT_WAIT))
+	if count == 0 {
+		return nil, fmt.Errorf("Failed to call getmntinfo")
+	}
+
+	var entries []C.struct_statfs
+	header := (*reflect.SliceHeader)(unsafe.Pointer(&entries))
+	header.Cap = count
+	header.Len = count
+	header.Data = uintptr(unsafe.Pointer(rawEntries))
+
+	var out []*Info
+	for _, entry := range entries {
+		var mountinfo Info
+		var skip, stop bool
+		mountinfo.Mountpoint = C.GoString(&entry.f_mntonname[0])
+		mountinfo.Fstype = C.GoString(&entry.f_fstypename[0])
+		mountinfo.Source = C.GoString(&entry.f_mntfromname[0])
+
+		if filter != nil {
+			// filter out entries we're not interested in
+			skip, stop = filter(&mountinfo)
+			if skip {
+				continue
+			}
+		}
+
+		out = append(out, &mountinfo)
+		if stop {
+			break
+		}
+	}
+	return out, nil
+}

vendor/github.com/moby/sys/mountinfo/mountinfo_linux.go

+// +build go1.13
+
+package mountinfo
+
+import (
+	"bufio"
+	"fmt"
+	"io"
+	"os"
+	"strconv"
+	"strings"
+)
+
+func parseInfoFile(r io.Reader, filter FilterFunc) ([]*Info, error) {
+	s := bufio.NewScanner(r)
+	out := []*Info{}
+	var err error
+	for s.Scan() {
+		if err = s.Err(); err != nil {
+			return nil, err
+		}
+		/*
+		   See http://man7.org/linux/man-pages/man5/proc.5.html
+
+		   36 35 98:0 /mnt1 /mnt2 rw,noatime master:1 - ext3 /dev/root rw,errors=continue
+		   (1)(2)(3)   (4)   (5)      (6)      (7)   (8) (9)   (10)         (11)
+
+		   (1) mount ID:  unique identifier of the mount (may be reused after umount)
+		   (2) parent ID:  ID of parent (or of self for the top of the mount tree)
+		   (3) major:minor:  value of st_dev for files on filesystem
+		   (4) root:  root of the mount within the filesystem
+		   (5) mount point:  mount point relative to the process's root
+		   (6) mount options:  per mount options
+		   (7) optional fields:  zero or more fields of the form "tag[:value]"
+		   (8) separator:  marks the end of the optional fields
+		   (9) filesystem type:  name of filesystem of the form "type[.subtype]"
+		   (10) mount source:  filesystem specific information or "none"
+		   (11) super options:  per super block options
+
+		   In other words, we have:
+		    * 6 mandatory fields	(1)..(6)
+		    * 0 or more optional fields	(7)
+		    * a separator field		(8)
+		    * 3 mandatory fields	(9)..(11)
+		*/
+
+		text := s.Text()
+		fields := strings.Split(text, " ")
+		numFields := len(fields)
+		if numFields < 10 {
+			// should be at least 10 fields
+			return nil, fmt.Errorf("Parsing '%s' failed: not enough fields (%d)", text, numFields)
+		}
+
+		// separator field
+		sepIdx := numFields - 4
+		// In Linux <= 3.9 mounting a cifs with spaces in a share
+		// name (like "//srv/My Docs") _may_ end up having a space
+		// in the last field of mountinfo (like "unc=//serv/My Docs").
+		// Since kernel 3.10-rc1, cifs option "unc=" is ignored,
+		// so spaces should not appear.
+		//
+		// Check for a separator, and work around the spaces bug
+		for fields[sepIdx] != "-" {
+			sepIdx--
+			if sepIdx == 5 {
+				return nil, fmt.Errorf("Parsing '%s' failed: missing - separator", text)
+			}
+		}
+
+		p := &Info{}
+
+		// Fill in the fields that a filter might check
+		p.Mountpoint, err = strconv.Unquote(`"` + fields[4] + `"`)
+		if err != nil {
+			return nil, fmt.Errorf("Parsing '%s' failed: unable to unquote mount point field: %w", fields[4], err)
+		}
+		p.Fstype = fields[sepIdx+1]
+		p.Source = fields[sepIdx+2]
+		p.VfsOpts = fields[sepIdx+3]
+
+		// Run a filter soon so we can skip parsing/adding entries
+		// the caller is not interested in
+		var skip, stop bool
+		if filter != nil {
+			skip, stop = filter(p)
+			if skip {
+				continue
+			}
+		}
+
+		// Fill in the rest of the fields
+
+		// ignore any numbers parsing errors, as there should not be any
+		p.ID, _ = strconv.Atoi(fields[0])
+		p.Parent, _ = strconv.Atoi(fields[1])
+		mm := strings.Split(fields[2], ":")
+		if len(mm) != 2 {
+			return nil, fmt.Errorf("Parsing '%s' failed: unexpected minor:major pair %s", text, mm)
+		}
+		p.Major, _ = strconv.Atoi(mm[0])
+		p.Minor, _ = strconv.Atoi(mm[1])
+
+		p.Root, err = strconv.Unquote(`"` + fields[3] + `"`)
+		if err != nil {
+			return nil, fmt.Errorf("Parsing '%s' failed: unable to unquote root field: %w", fields[3], err)
+		}
+
+		p.Opts = fields[5]
+
+		// zero or more optional fields
+		switch {
+		case sepIdx == 6:
+			// zero, do nothing
+		case sepIdx == 7:
+			p.Optional = fields[6]
+		default:
+			p.Optional = strings.Join(fields[6:sepIdx-1], " ")
+		}
+
+		out = append(out, p)
+		if stop {
+			break
+		}
+	}
+	return out, nil
+}
+
+// Parse /proc/self/mountinfo because comparing Dev and ino does not work from
+// bind mounts
+func parseMountTable(filter FilterFunc) ([]*Info, error) {
+	f, err := os.Open("/proc/self/mountinfo")
+	if err != nil {
+		return nil, err
+	}
+	defer f.Close()
+
+	return parseInfoFile(f, filter)
+}
+
+// PidMountInfo collects the mounts for a specific process ID. If the process
+// ID is unknown, it is better to use `GetMounts` which will inspect
+// "/proc/self/mountinfo" instead.
+func PidMountInfo(pid int) ([]*Info, error) {
+	f, err := os.Open(fmt.Sprintf("/proc/%d/mountinfo", pid))
+	if err != nil {
+		return nil, err
+	}
+	defer f.Close()
+
+	return parseInfoFile(f, nil)
+}

vendor/github.com/moby/sys/mountinfo/mountinfo_unsupported.go

+// +build !windows,!linux,!freebsd freebsd,!cgo
+
+package mountinfo
+
+import (
+	"fmt"
+	"io"
+	"runtime"
+)
+
+func parseMountTable(_ FilterFunc) ([]*Info, error) {
+	return nil, fmt.Errorf("mount.parseMountTable is not implemented on %s/%s", runtime.GOOS, runtime.GOARCH)
+}
+
+func parseInfoFile(_ io.Reader, f FilterFunc) ([]*Info, error) {
+	return parseMountTable(f)
+}

vendor/github.com/moby/sys/mountinfo/mountinfo_windows.go

+package mountinfo
+
+import "io"
+
+func parseMountTable(_ FilterFunc) ([]*Info, error) {
+	// Do NOT return an error!
+	return nil, nil
+}
+
+func parseInfoFile(_ io.Reader, f FilterFunc) ([]*Info, error) {
+	return parseMountTable(f)
+}

vendor/github.com/rootless-containers/rootlesskit/pkg/api/api.go

+package api
+
+// ErrorJSON is returned with "application/json" content type and non-2XX status code
+type ErrorJSON struct {
+	Message string `json:"message"`
+}

vendor/github.com/rootless-containers/rootlesskit/pkg/api/client/client.go

@@ -12,8 +12,8 @@ import (
 	"os"
 
 	"github.com/pkg/errors"
-	"golang.org/x/net/context/ctxhttp"
 
+	"github.com/rootless-containers/rootlesskit/pkg/api"
 	"github.com/rootless-containers/rootlesskit/pkg/port"
 )
 
@@ -80,13 +80,40 @@ func readAtMost(r io.Reader, maxBytes int) ([]byte, error) {
 	return b, nil
 }
 
+// HTTPStatusErrorBodyMaxLength specifies the maximum length of HTTPStatusError.Body
+const HTTPStatusErrorBodyMaxLength = 64 * 1024
+
+// HTTPStatusError is created from non-2XX HTTP response
+type HTTPStatusError struct {
+	// StatusCode is non-2XX status code
+	StatusCode int
+	// Body is at most HTTPStatusErrorBodyMaxLength
+	Body string
+}
+
+// Error implements error.
+// If e.Body is a marshalled string of api.ErrorJSON, Error returns ErrorJSON.Message .
+// Otherwise Error returns a human-readable string that contains e.StatusCode and e.Body.
+func (e *HTTPStatusError) Error() string {
+	if e.Body != "" && len(e.Body) < HTTPStatusErrorBodyMaxLength {
+		var ej api.ErrorJSON
+		if json.Unmarshal([]byte(e.Body), &ej) == nil {
+			return ej.Message
+		}
+	}
+	return fmt.Sprintf("unexpected HTTP status %s, body=%q", http.StatusText(e.StatusCode), e.Body)
+}
+
 func successful(resp *http.Response) error {
 	if resp == nil {
 		return errors.New("nil response")
 	}
 	if resp.StatusCode/100 != 2 {
-		b, _ := readAtMost(resp.Body, 64*1024)
-		return errors.Errorf("unexpected HTTP status %s, body=%q", resp.Status, string(b))
+		b, _ := readAtMost(resp.Body, HTTPStatusErrorBodyMaxLength)
+		return &HTTPStatusError{
+			StatusCode: resp.StatusCode,
+			Body:       string(b),
+		}
 	}
 	return nil
 }
@@ -101,7 +128,13 @@ func (pm *portManager) AddPort(ctx context.Context, spec port.Spec) (*port.Statu
 		return nil, err
 	}
 	u := fmt.Sprintf("http://%s/%s/ports", pm.client.dummyHost, pm.client.version)
-	resp, err := ctxhttp.Post(ctx, pm.client.HTTPClient(), u, "application/json", bytes.NewReader(m))
+	req, err := http.NewRequest("POST", u, bytes.NewReader(m))
+	if err != nil {
+		return nil, err
+	}
+	req.Header.Set("Content-Type", "application/json")
+	req = req.WithContext(ctx)
+	resp, err := pm.client.HTTPClient().Do(req)
 	if err != nil {
 		return nil, err
 	}
@@ -118,7 +151,12 @@ func (pm *portManager) AddPort(ctx context.Context, spec port.Spec) (*port.Statu
 }
 func (pm *portManager) ListPorts(ctx context.Context) ([]port.Status, error) {
 	u := fmt.Sprintf("http://%s/%s/ports", pm.client.dummyHost, pm.client.version)
-	resp, err := ctxhttp.Get(ctx, pm.client.HTTPClient(), u)
+	req, err := http.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, err
+	}
+	req = req.WithContext(ctx)
+	resp, err := pm.client.HTTPClient().Do(req)
 	if err != nil {
 		return nil, err
 	}
@@ -139,7 +177,8 @@ func (pm *portManager) RemovePort(ctx context.Context, id int) error {
 	if err != nil {
 		return err
 	}
-	resp, err := ctxhttp.Do(ctx, pm.client.HTTPClient(), req)
+	req = req.WithContext(ctx)
+	resp, err := pm.client.HTTPClient().Do(req)
 	if err != nil {
 		return err
 	}

vendor/github.com/rootless-containers/rootlesskit/pkg/api/openapi.yaml

+# When you made a change to this YAML, please validate with https://editor.swagger.io
+openapi: 3.0.2
+info:
+  version: 1.0.0
+  title: RootlessKit API
+servers:
+  - url: 'http://rootlesskit/v1'
+    description: Local UNIX socket server. The host part of the URL is ignored.
+paths:
+  /ports:
+    get:
+      responses:
+        '200':
+          description: An array of PortStatus
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/PortStatuses'
+    post:
+      requestBody:
+        required: true
+        content:
+          application/json:
+            schema:
+              $ref: '#/components/schemas/PortSpec'
+      responses:
+        '201':
+          description: PortStatus with ID
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/PortStatus'
+  '/ports/{id}':
+    delete:
+      parameters:
+        - name: id
+          in: path
+          required: true
+          schema:
+            type: integer
+            format: int64
+      responses:
+        '200':
+          description: Null response
+components:
+  schemas:
+    PortSpec:
+      required:
+        - proto
+      properties:
+        proto:
+          type: string
+          enum:
+            - tcp
+            - udp
+            - sctp
+        parentIP:
+          type: string
+        parentPort:
+          type: integer
+          format: int32
+          minimum: 1
+          maximum: 65535
+# future version may support requests with parentPort<=0 for automatic port assignment
+        childPort:
+          type: integer
+          format: int32
+          minimum: 1
+          maximum: 65535
+    PortStatus:
+      required:
+        - id
+      properties:
+        id:
+          type: integer
+          format: int64
+        spec:
+          $ref: '#/components/schemas/PortSpec'
+    PortStatuses:
+      type: array
+      items:
+        $ref: '#/components/schemas/PortStatus'

vendor/github.com/rootless-containers/rootlesskit/pkg/api/router/router.go

@@ -9,6 +9,7 @@ import (
 	"github.com/gorilla/mux"
 	"github.com/pkg/errors"
 
+	"github.com/rootless-containers/rootlesskit/pkg/api"
 	"github.com/rootless-containers/rootlesskit/pkg/port"
 )
 
@@ -22,10 +23,7 @@ func (b *Backend) onError(w http.ResponseWriter, r *http.Request, err error, ec
 	w.WriteHeader(ec)
 	w.Header().Set("Content-Type", "application/json")
 	// it is safe to return the err to the client, because the client is reliable
-	type errorJSON struct {
-		Message string `json:"message"`
-	}
-	e := errorJSON{
+	e := api.ErrorJSON{
 		Message: err.Error(),
 	}
 	_ = json.NewEncoder(w).Encode(e)

vendor/github.com/rootless-containers/rootlesskit/pkg/child/child.go

 package child
 
 import (
+	"context"
 	"io/ioutil"
 	"os"
 	"os/exec"
@@ -18,8 +19,19 @@ import (
 	"github.com/rootless-containers/rootlesskit/pkg/msgutil"
 	"github.com/rootless-containers/rootlesskit/pkg/network"
 	"github.com/rootless-containers/rootlesskit/pkg/port"
+	"github.com/rootless-containers/rootlesskit/pkg/sigproxy"
+	sigproxysignal "github.com/rootless-containers/rootlesskit/pkg/sigproxy/signal"
 )
 
+var propagationStates = map[string]uintptr{
+	"private":  uintptr(unix.MS_PRIVATE),
+	"rprivate": uintptr(unix.MS_REC | unix.MS_PRIVATE),
+	"shared":   uintptr(unix.MS_SHARED),
+	"rshared":  uintptr(unix.MS_REC | unix.MS_SHARED),
+	"slave":    uintptr(unix.MS_SLAVE),
+	"rslave":   uintptr(unix.MS_REC | unix.MS_SLAVE),
+}
+
 func createCmd(targetCmd []string) (*exec.Cmd, error) {
 	var args []string
 	if len(targetCmd) > 1 {
@@ -165,7 +177,8 @@ type Opt struct {
 	CopyUpDriver  copyup.ChildDriver  // cannot be nil if len(CopyUpDirs) != 0
 	CopyUpDirs    []string
 	PortDriver    port.ChildDriver
-	MountProcfs   bool // needs to be set if (and only if) parent.Opt.CreatePIDNS is set
+	MountProcfs   bool   // needs to be set if (and only if) parent.Opt.CreatePIDNS is set
+	Propagation   string // mount propagation type
 	Reaper        bool
 }
 
@@ -214,6 +227,9 @@ func Child(opt Opt) error {
 	if msg.StateDir == "" {
 		return errors.New("got empty StateDir")
 	}
+	if err := setMountPropagation(opt.Propagation); err != nil {
+		return err
+	}
 	etcWasCopied, err := setupCopyDir(opt.CopyUpDriver, opt.CopyUpDirs)
 	if err != nil {
 		return err
@@ -243,7 +259,12 @@ func Child(opt Opt) error {
 			return errors.Wrapf(err, "command %v exited", opt.TargetCmd)
 		}
 	} else {
-		if err := cmd.Run(); err != nil {
+		if err := cmd.Start(); err != nil {
+			return errors.Wrapf(err, "command %v exited", opt.TargetCmd)
+		}
+		sigc := sigproxy.ForwardAllSignals(context.TODO(), cmd.Process.Pid)
+		defer sigproxysignal.StopCatch(sigc)
+		if err := cmd.Wait(); err != nil {
 			return errors.Wrapf(err, "command %v exited", opt.TargetCmd)
 		}
 	}
@@ -254,12 +275,25 @@ func Child(opt Opt) error {
 	return nil
 }
 
+func setMountPropagation(propagation string) error {
+	flags, ok := propagationStates[propagation]
+	if ok {
+		if err := unix.Mount("none", "/", "", flags, ""); err != nil {
+			return errors.Wrapf(err, "failed to share mount point: /")
+		}
+	}
+	return nil
+}
+
 func runAndReap(cmd *exec.Cmd) error {
 	c := make(chan os.Signal, 32)
 	signal.Notify(c, syscall.SIGCHLD)
 	if err := cmd.Start(); err != nil {
 		return err
 	}
+	sigc := sigproxy.ForwardAllSignals(context.TODO(), cmd.Process.Pid)
+	defer sigproxysignal.StopCatch(sigc)
+
 	result := make(chan error)
 	go func() {
 		defer close(result)

vendor/github.com/rootless-containers/rootlesskit/pkg/network/slirp4netns/slirp4netns.go

@@ -2,6 +2,7 @@ package slirp4netns
 
 import (
 	"context"
+	"io"
 	"net"
 	"os"
 	"os/exec"
@@ -49,9 +50,14 @@ func DetectFeatures(binary string) (*Features, error) {
 	s := string(b)
 	if err != nil {
 		return nil, errors.Wrapf(err,
-			"command \"%s --help\" failed, make sure slirp4netns v0.2.0+ is installed: %q",
+			"command \"%s --help\" failed, make sure slirp4netns v0.4.0+ is installed: %q",
 			realBinary, s)
 	}
+	if !strings.Contains(s, "--netns-type") {
+		// We don't use --netns-type, but we check the presence of --netns-type to
+		// ensure slirp4netns >= v0.4.0: https://github.com/rootless-containers/rootlesskit/issues/143
+		return nil, errors.New("slirp4netns seems older than v0.4.0")
+	}
 	kernelSupportsEnableSeccomp := false
 	if unix.Prctl(unix.PR_GET_SECCOMP, 0, 0, 0, 0) != unix.EINVAL {
 		kernelSupportsEnableSeccomp = unix.Prctl(unix.PR_SET_SECCOMP, unix.SECCOMP_MODE_FILTER, 0, 0, 0) != unix.EINVAL
@@ -68,24 +74,42 @@ func DetectFeatures(binary string) (*Features, error) {
 }
 
 // NewParentDriver instantiates new parent driver.
-// ipnet is supported only for slirp4netns v0.3.0+.
-// ipnet MUST be nil for slirp4netns < v0.3.0.
-//
-// disableHostLoopback is supported only for slirp4netns v0.3.0+
-// apiSocketPath is supported only for slirp4netns v0.3.0+
-// enableSandbox is supported only for slirp4netns v0.4.0+
-// enableSeccomp is supported only for slirp4netns v0.4.0+
-func NewParentDriver(binary string, mtu int, ipnet *net.IPNet, disableHostLoopback bool, apiSocketPath string, enableSandbox, enableSeccomp bool) network.ParentDriver {
+// Requires slirp4netns v0.4.0 or later.
+func NewParentDriver(logWriter io.Writer, binary string, mtu int, ipnet *net.IPNet, disableHostLoopback bool, apiSocketPath string, enableSandbox, enableSeccomp bool) (network.ParentDriver, error) {
 	if binary == "" {
-		panic("got empty slirp4netns binary")
+		return nil, errors.New("got empty slirp4netns binary")
 	}
 	if mtu < 0 {
-		panic("got negative mtu")
+		return nil, errors.New("got negative mtu")
 	}
 	if mtu == 0 {
 		mtu = 65520
 	}
+	features, err := DetectFeatures(binary)
+	if err != nil {
+		return nil, err
+	}
+	if ipnet != nil && !features.SupportsCIDR {
+		return nil, errors.New("this version of slirp4netns does not support --cidr")
+	}
+	if disableHostLoopback && !features.SupportsDisableHostLoopback {
+		return nil, errors.New("this version of slirp4netns does not support --disable-host-loopback")
+	}
+	if apiSocketPath != "" && !features.SupportsAPISocket {
+		return nil, errors.New("this version of slirp4netns does not support --api-socket")
+	}
+	if enableSandbox && !features.SupportsEnableSandbox {
+		return nil, errors.New("this version of slirp4netns does not support --enable-sandbox")
+	}
+	if enableSeccomp && !features.SupportsEnableSeccomp {
+		return nil, errors.New("this version of slirp4netns does not support --enable-seccomp")
+	}
+	if enableSeccomp && !features.KernelSupportsEnableSeccomp {
+		return nil, errors.New("kernel does not support seccomp")
+	}
+
 	return &parentDriver{
+		logWriter:           logWriter,
 		binary:              binary,
 		mtu:                 mtu,
 		ipnet:               ipnet,
@@ -93,10 +117,11 @@ func NewParentDriver(binary string, mtu int, ipnet *net.IPNet, disableHostLoopba
 		apiSocketPath:       apiSocketPath,
 		enableSandbox:       enableSandbox,
 		enableSeccomp:       enableSeccomp,
-	}
+	}, nil
 }
 
 type parentDriver struct {
+	logWriter           io.Writer
 	binary              string
 	mtu                 int
 	ipnet               *net.IPNet
@@ -123,7 +148,7 @@ func (d *parentDriver) ConfigureNetwork(childPID int, stateDir string) (*common.
 	}
 	defer readyR.Close()
 	defer readyW.Close()
-	// -r: readyFD
+	// -r: readyFD (requires slirp4netns >= v0.4.0: https://github.com/rootless-containers/rootlesskit/issues/143)
 	opts := []string{"--mtu", strconv.Itoa(d.mtu), "-r", "3"}
 	if d.disableHostLoopback {
 		opts = append(opts, "--disable-host-loopback")
@@ -141,6 +166,9 @@ func (d *parentDriver) ConfigureNetwork(childPID int, stateDir string) (*common.
 		opts = append(opts, "--enable-seccomp")
 	}
 	cmd := exec.CommandContext(ctx, d.binary, append(opts, []string{strconv.Itoa(childPID), tap}...)...)
+	// FIXME: Stdout doen't seem captured
+	cmd.Stdout = d.logWriter
+	cmd.Stderr = d.logWriter
 	cmd.SysProcAttr = &syscall.SysProcAttr{
 		Pdeathsig: syscall.SIGKILL,
 	}

vendor/github.com/rootless-containers/rootlesskit/pkg/parent/idtools/idtools.go

-// Package idtools is forked from https://github.com/moby/moby/tree/c12f09bf99b54f274a5ae241dd154fa74020cbab/pkg/idtools
+// Package idtools is forked from https://github.com/moby/moby/tree/298ba5b13150bfffe8414922a951a7a793276d31/pkg/idtools
 package idtools
 
 import (
 	"bufio"
 	"fmt"
 	"os"
-	"sort"
 	"strconv"
 	"strings"
 )
@@ -97,20 +96,20 @@ type IdentityMapping struct {
 // NewIdentityMapping takes a requested user and group name and
 // using the data from /etc/sub{uid,gid} ranges, creates the
 // proper uid and gid remapping ranges for that user/group pair
-func NewIdentityMapping(username, groupname string) (*IdentityMapping, error) {
-	subuidRanges, err := parseSubuid(username)
+func NewIdentityMapping(uid int, username string) (*IdentityMapping, error) {
+	subuidRanges, err := parseSubuid(uid, username)
 	if err != nil {
 		return nil, err
 	}
-	subgidRanges, err := parseSubgid(groupname)
+	subgidRanges, err := parseSubgid(uid, username)
 	if err != nil {
 		return nil, err
 	}
 	if len(subuidRanges) == 0 {
-		return nil, fmt.Errorf("No subuid ranges found for user %q", username)
+		return nil, fmt.Errorf("No subuid ranges found for user %d (%q)", uid, username)
 	}
 	if len(subgidRanges) == 0 {
-		return nil, fmt.Errorf("No subgid ranges found for group %q", groupname)
+		return nil, fmt.Errorf("No subgid ranges found for user %d (%q)", uid, username)
 	}
 
 	return &IdentityMapping{
@@ -182,8 +181,6 @@ func (i *IdentityMapping) GIDs() []IDMap {
 func createIDMap(subidRanges ranges) []IDMap {
 	idMap := []IDMap{}
 
-	// sort the ranges by lowest ID first
-	sort.Sort(subidRanges)
 	containerID := 0
 	for _, idrange := range subidRanges {
 		idMap = append(idMap, IDMap{
@@ -196,18 +193,18 @@ func createIDMap(subidRanges ranges) []IDMap {
 	return idMap
 }
 
-func parseSubuid(username string) (ranges, error) {
-	return parseSubidFile(subuidFileName, username)
+func parseSubuid(uid int, username string) (ranges, error) {
+	return parseSubidFile(subuidFileName, uid, username)
 }
 
-func parseSubgid(username string) (ranges, error) {
-	return parseSubidFile(subgidFileName, username)
+func parseSubgid(uid int, username string) (ranges, error) {
+	return parseSubidFile(subgidFileName, uid, username)
 }
 
 // parseSubidFile will read the appropriate file (/etc/subuid or /etc/subgid)
-// and return all found ranges for a specified username. If the special value
-// "ALL" is supplied for username, then all ranges in the file will be returned
-func parseSubidFile(path, username string) (ranges, error) {
+// and return all found ranges for a specified user. username is optional.
+func parseSubidFile(path string, uid int, username string) (ranges, error) {
+	uidS := strconv.Itoa(uid)
 	var rangeList ranges
 
 	subidFile, err := os.Open(path)
@@ -218,10 +215,6 @@ func parseSubidFile(path, username string) (ranges, error) {
 
 	s := bufio.NewScanner(subidFile)
 	for s.Scan() {
-		if err := s.Err(); err != nil {
-			return rangeList, err
-		}
-
 		text := strings.TrimSpace(s.Text())
 		if text == "" || strings.HasPrefix(text, "#") {
 			continue
@@ -230,7 +223,7 @@ func parseSubidFile(path, username string) (ranges, error) {
 		if len(parts) != 3 {
 			return rangeList, fmt.Errorf("Cannot parse subuid/gid information: Format not correct for %s file", path)
 		}
-		if parts[0] == username || username == "ALL" {
+		if parts[0] == uidS || (username != "" && parts[0] == username) {
 			startid, err := strconv.Atoi(parts[1])
 			if err != nil {
 				return rangeList, fmt.Errorf("String to int conversion failed during subuid/gid parsing of %s: %v", path, err)
@@ -242,5 +235,5 @@ func parseSubidFile(path, username string) (ranges, error) {
 			rangeList = append(rangeList, subIDRange{startid, length})
 		}
 	}
-	return rangeList, nil
+	return rangeList, s.Err()
 }

vendor/github.com/rootless-containers/rootlesskit/pkg/parent/parent.go

@@ -2,6 +2,7 @@ package parent
 
 import (
 	"context"
+	"fmt"
 	"io/ioutil"
 	"net"
 	"net/http"
@@ -12,10 +13,11 @@ import (
 	"strconv"
 	"syscall"
 
+	"github.com/gofrs/flock"
 	"github.com/gorilla/mux"
 	"github.com/pkg/errors"
 	"github.com/sirupsen/logrus"
-	"github.com/theckman/go-flock"
+	"golang.org/x/sys/unix"
 
 	"github.com/rootless-containers/rootlesskit/pkg/api/router"
 	"github.com/rootless-containers/rootlesskit/pkg/common"
@@ -23,16 +25,24 @@ import (
 	"github.com/rootless-containers/rootlesskit/pkg/network"
 	"github.com/rootless-containers/rootlesskit/pkg/parent/idtools"
 	"github.com/rootless-containers/rootlesskit/pkg/port"
+	"github.com/rootless-containers/rootlesskit/pkg/sigproxy"
+	"github.com/rootless-containers/rootlesskit/pkg/sigproxy/signal"
 )
 
 type Opt struct {
-	PipeFDEnvKey   string               // needs to be set
-	StateDir       string               // directory needs to be precreated
-	StateDirEnvKey string               // optional env key to propagate StateDir value
-	NetworkDriver  network.ParentDriver // nil for HostNetwork
-	PortDriver     port.ParentDriver    // nil for --port-driver=none
-	PublishPorts   []port.Spec
-	CreatePIDNS    bool
+	PipeFDEnvKey     string               // needs to be set
+	StateDir         string               // directory needs to be precreated
+	StateDirEnvKey   string               // optional env key to propagate StateDir value
+	NetworkDriver    network.ParentDriver // nil for HostNetwork
+	PortDriver       port.ParentDriver    // nil for --port-driver=none
+	PublishPorts     []port.Spec
+	CreatePIDNS      bool
+	CreateCgroupNS   bool
+	CreateUTSNS      bool
+	CreateIPCNS      bool
+	ParentEUIDEnvKey string // optional env key to propagate geteuid() value
+	ParentEGIDEnvKey string // optional env key to propagate getegid() value
+	Propagation      string
 }
 
 // Documented state files. Undocumented ones are subject to change.
@@ -42,7 +52,7 @@ const (
 	StateFileAPISock  = "api.sock"  // REST API Socket
 )
 
-func Parent(opt Opt) error {
+func checkPreflight(opt Opt) error {
 	if opt.PipeFDEnvKey == "" {
 		return errors.New("pipe FD env key is not set")
 	}
@@ -55,6 +65,22 @@ func Parent(opt Opt) error {
 	if stat, err := os.Stat(opt.StateDir); err != nil || !stat.IsDir() {
 		return errors.Wrap(err, "state dir is inaccessible")
 	}
+
+	if os.Geteuid() == 0 {
+		logrus.Warn("Running RootlessKit as the root user is unsupported.")
+	}
+
+	warnSysctl()
+
+	// invalid propagation doesn't result in an error
+	warnPropagation(opt.Propagation)
+	return nil
+}
+
+func Parent(opt Opt) error {
+	if err := checkPreflight(opt); err != nil {
+		return err
+	}
 	lockPath := filepath.Join(opt.StateDir, StateFileLock)
 	lock := flock.NewFlock(lockPath)
 	locked, err := lock.TryLock()
@@ -81,9 +107,8 @@ func Parent(opt Opt) error {
 	}
 	cmd := exec.Command("/proc/self/exe", os.Args[1:]...)
 	cmd.SysProcAttr = &syscall.SysProcAttr{
-		Pdeathsig:    syscall.SIGKILL,
-		Cloneflags:   syscall.CLONE_NEWUSER,
-		Unshareflags: syscall.CLONE_NEWNS,
+		Pdeathsig:  syscall.SIGKILL,
+		Cloneflags: syscall.CLONE_NEWUSER | syscall.CLONE_NEWNS,
 	}
 	if opt.NetworkDriver != nil {
 		cmd.SysProcAttr.Unshareflags |= syscall.CLONE_NEWNET
@@ -92,6 +117,15 @@ func Parent(opt Opt) error {
 		// cannot be Unshareflags (panics)
 		cmd.SysProcAttr.Cloneflags |= syscall.CLONE_NEWPID
 	}
+	if opt.CreateCgroupNS {
+		cmd.SysProcAttr.Unshareflags |= unix.CLONE_NEWCGROUP
+	}
+	if opt.CreateUTSNS {
+		cmd.SysProcAttr.Unshareflags |= unix.CLONE_NEWUTS
+	}
+	if opt.CreateIPCNS {
+		cmd.SysProcAttr.Unshareflags |= unix.CLONE_NEWIPC
+	}
 	cmd.Stdin = os.Stdin
 	cmd.Stdout = os.Stdout
 	cmd.Stderr = os.Stderr
@@ -100,12 +134,21 @@ func Parent(opt Opt) error {
 	if opt.StateDirEnvKey != "" {
 		cmd.Env = append(cmd.Env, opt.StateDirEnvKey+"="+opt.StateDir)
 	}
+	if opt.ParentEUIDEnvKey != "" {
+		cmd.Env = append(cmd.Env, fmt.Sprintf("%s=%d", opt.ParentEUIDEnvKey, os.Geteuid()))
+	}
+	if opt.ParentEGIDEnvKey != "" {
+		cmd.Env = append(cmd.Env, fmt.Sprintf("%s=%d", opt.ParentEGIDEnvKey, os.Getegid()))
+	}
 	if err := cmd.Start(); err != nil {
 		return errors.Wrap(err, "failed to start the child")
 	}
 	if err := setupUIDGIDMap(cmd.Process.Pid); err != nil {
 		return errors.Wrap(err, "failed to setup UID/GID map")
 	}
+	sigc := sigproxy.ForwardAllSignals(context.TODO(), cmd.Process.Pid)
+	defer signal.StopCatch(sigc)
+
 	// send message 0
 	msg := common.Message{
 		Stage:    0,
@@ -216,11 +259,11 @@ func newugidmapArgs() ([]string, []string, error) {
 		"1",
 	}
 
-	// get both subid maps
-	// uses username for groupname in case primary groupname is not the same
-	// idtools will fall back to getent if /etc/passwd does not contain username
-	// works with external auth, ie sssd, ldap, nis
-	ims, err := idtools.NewIdentityMapping(u.Username, u.Username)
+	uid, err := strconv.Atoi(u.Uid)
+	if err != nil {
+		return nil, nil, err
+	}
+	ims, err := idtools.NewIdentityMapping(uid, u.Username)
 	if err != nil {
 		return nil, nil, err
 	}

vendor/github.com/rootless-containers/rootlesskit/pkg/parent/warn.go

+package parent
+
+import (
+	"io/ioutil"
+	"strconv"
+	"strings"
+
+	"github.com/moby/sys/mountinfo"
+	"github.com/sirupsen/logrus"
+)
+
+func warnPropagation(propagation string) {
+	mounts, err := mountinfo.GetMounts(mountinfo.SingleEntryFilter("/"))
+	if err != nil || len(mounts) < 1 {
+		logrus.WithError(err).Warn("Failed to parse mountinfo")
+		return
+	}
+	root := mounts[0]
+	// 1. When running on a "sane" host,   root.Optional is like "shared:1".   ("shared" in findmnt(8) output)
+	// 2. When running inside a container, root.Optional is like "master:363". ("private, slave" in findmnt(8) output)
+	//
+	// Setting non-private propagation is supported for 1, unsupported for 2.
+	if !strings.Contains(propagation, "private") && !strings.Contains(root.Optional, "shared") {
+		logrus.Warnf("The host root filesystem is mounted as %q. Setting child propagation to %q is not supported.",
+			root.Optional, propagation)
+	}
+}
+
+// warnSysctl verifies /proc/sys/kernel/unprivileged_userns_clone and /proc/sys/user/max_user_namespaces
+func warnSysctl() {
+	uuc, err := ioutil.ReadFile("/proc/sys/kernel/unprivileged_userns_clone")
+	// The file exists only on distros with the "add sysctl to disallow unprivileged CLONE_NEWUSER by default" patch.
+	// (e.g. Debian and Arch)
+	if err == nil {
+		s := strings.TrimSpace(string(uuc))
+		i, err := strconv.ParseInt(s, 10, 64)
+		if err != nil {
+			logrus.WithError(err).Warnf("Failed to parse /proc/sys/kernel/unprivileged_userns_clone (%q)", s)
+		} else if i == 0 {
+			logrus.Warn("/proc/sys/kernel/unprivileged_userns_clone needs to be set to 1.")
+		}
+	}
+
+	mun, err := ioutil.ReadFile("/proc/sys/user/max_user_namespaces")
+	if err == nil {
+		s := strings.TrimSpace(string(mun))
+		i, err := strconv.ParseInt(strings.TrimSpace(string(mun)), 10, 64)
+		if err != nil {
+			logrus.WithError(err).Warnf("Failed to parse /proc/sys/user/max_user_namespaces (%q)", s)
+		} else if i == 0 {
+			logrus.Warn("/proc/sys/user/max_user_namespaces needs to be set to non-zero.")
+		} else {
+			threshold := int64(1024)
+			if i < threshold {
+				logrus.Warnf("/proc/sys/user/max_user_namespaces=%d may be low. Consider setting to >= %d.", i, threshold)
+			}
+		}
+	}
+}

vendor/github.com/rootless-containers/rootlesskit/pkg/port/builtin/child/child.go

@@ -119,12 +119,19 @@ func (d *childDriver) handleConnectRequest(c *net.UnixConn, req *msg.Request) er
 	if err != nil {
 		return err
 	}
+	defer targetConnFile.Close()
 	oob := unix.UnixRights(int(targetConnFile.Fd()))
 	f, err := c.File()
 	if err != nil {
 		return err
 	}
-	err = unix.Sendmsg(int(f.Fd()), []byte("dummy"), oob, nil, 0)
+	defer f.Close()
+	for {
+		err = unix.Sendmsg(int(f.Fd()), []byte("dummy"), oob, nil, 0)
+		if err != unix.EINTR {
+			break
+		}
+	}
 	return err
 }
 

vendor/github.com/rootless-containers/rootlesskit/pkg/port/builtin/msg/msg.go

@@ -62,7 +62,16 @@ func ConnectToChild(c *net.UnixConn, spec port.Spec) (int, error) {
 	}
 	oobSpace := unix.CmsgSpace(4)
 	oob := make([]byte, oobSpace)
-	_, oobN, _, _, err := c.ReadMsgUnix(nil, oob)
+	var (
+		oobN int
+		err  error
+	)
+	for {
+		_, oobN, _, _, err = c.ReadMsgUnix(nil, oob)
+		if err != unix.EINTR {
+			break
+		}
+	}
 	if err != nil {
 		return 0, err
 	}

vendor/github.com/rootless-containers/rootlesskit/pkg/port/builtin/parent/parent.go

@@ -2,11 +2,14 @@ package parent
 
 import (
 	"context"
+	"fmt"
 	"io"
 	"io/ioutil"
 	"net"
 	"os"
 	"path/filepath"
+	"strconv"
+	"strings"
 	"sync"
 	"syscall"
 
@@ -84,6 +87,40 @@ func (d *driver) RunParentDriver(initComplete chan struct{}, quit <-chan struct{
 	return nil
 }
 
+func isEPERM(err error) bool {
+	k := "permission denied"
+	// As of Go 1.14, errors.Is(err, syscall.EPERM) does not seem to work for
+	// "listen tcp 0.0.0.0:80: bind: permission denied" error from net.ListenTCP().
+	return errors.Is(err, syscall.EPERM) || strings.Contains(err.Error(), k)
+}
+
+// annotateEPERM annotates origErr for human-readability
+func annotateEPERM(origErr error, spec port.Spec) error {
+	// Read "net.ipv4.ip_unprivileged_port_start" value (typically 1024)
+	// TODO: what for IPv6?
+	// NOTE: sync.Once should not be used here
+	b, e := ioutil.ReadFile("/proc/sys/net/ipv4/ip_unprivileged_port_start")
+	if e != nil {
+		return origErr
+	}
+	start, e := strconv.Atoi(strings.TrimSpace(string(b)))
+	if e != nil {
+		return origErr
+	}
+	if spec.ParentPort >= start {
+		// origErr is unrelated to ip_unprivileged_port_start
+		return origErr
+	}
+	text := fmt.Sprintf("cannot expose privileged port %d, you might need to add \"net.ipv4.ip_unprivileged_port_start=0\" (currently %d) to /etc/sysctl.conf", spec.ParentPort, start)
+	if filepath.Base(os.Args[0]) == "rootlesskit" {
+		// NOTE: The following sentence is appended only if Args[0] == "rootlesskit", because it does not apply to Podman (as of Podman v1.9).
+		// Podman launches the parent driver in the child user namespace (but in the parent network namespace), which disables the file capability.
+		text += ", or set CAP_NET_BIND_SERVICE on rootlesskit binary"
+	}
+	text += fmt.Sprintf(", or choose a larger port number (>= %d)", start)
+	return errors.Wrap(origErr, text)
+}
+
 func (d *driver) AddPort(ctx context.Context, spec port.Spec) (*port.Status, error) {
 	d.mu.Lock()
 	err := portutil.ValidatePortSpec(spec, d.ports)
@@ -106,6 +143,9 @@ func (d *driver) AddPort(ctx context.Context, spec port.Spec) (*port.Status, err
 		return nil, errors.New("spec was not validated?")
 	}
 	if err != nil {
+		if isEPERM(err) {
+			err = annotateEPERM(err, spec)
+		}
 		return nil, err
 	}
 	d.mu.Lock()

vendor/github.com/rootless-containers/rootlesskit/pkg/port/portutil/portutil.go

@@ -58,8 +58,7 @@ func ValidatePortSpec(spec port.Spec, existingPorts map[int]*port.Status) error
 		sp := p.Spec
 		sameProto := sp.Proto == spec.Proto
 		sameParent := sp.ParentIP == spec.ParentIP && sp.ParentPort == spec.ParentPort
-		sameChild := sp.ChildPort == spec.ChildPort
-		if sameProto && (sameParent || sameChild) {
+		if sameProto && sameParent {
 			return errors.Errorf("conflict with ID %d", id)
 		}
 	}

vendor/github.com/rootless-containers/rootlesskit/pkg/sigproxy/signal/signal.go

+// Package signal provides helper functions for dealing with signals across
+// various operating systems.
+//
+// Forked from https://github.com/moby/moby/tree/37defbfd9b968f38e8e15dfa5f06d9f878bd65ba/pkg/signal
+package signal
+
+import (
+	"os"
+	"os/signal"
+)
+
+// CatchAll catches all signals and relays them to the specified channel.
+func CatchAll(sigc chan os.Signal) {
+	var handledSigs []os.Signal
+	for _, s := range SignalMap {
+		handledSigs = append(handledSigs, s)
+	}
+	signal.Notify(sigc, handledSigs...)
+}
+
+// StopCatch stops catching the signals and closes the specified channel.
+func StopCatch(sigc chan os.Signal) {
+	signal.Stop(sigc)
+	close(sigc)
+}

vendor/github.com/rootless-containers/rootlesskit/pkg/sigproxy/signal/signal_linux.go

+// +build !mips,!mipsle,!mips64,!mips64le
+
+package signal
+
+import (
+	"syscall"
+
+	"golang.org/x/sys/unix"
+)
+
+const (
+	sigrtmin = 34
+	sigrtmax = 64
+)
+
+// SignalMap is a map of Linux signals.
+var SignalMap = map[string]syscall.Signal{
+	"ABRT":     unix.SIGABRT,
+	"ALRM":     unix.SIGALRM,
+	"BUS":      unix.SIGBUS,
+	"CHLD":     unix.SIGCHLD,
+	"CLD":      unix.SIGCLD,
+	"CONT":     unix.SIGCONT,
+	"FPE":      unix.SIGFPE,
+	"HUP":      unix.SIGHUP,
+	"ILL":      unix.SIGILL,
+	"INT":      unix.SIGINT,
+	"IO":       unix.SIGIO,
+	"IOT":      unix.SIGIOT,
+	"KILL":     unix.SIGKILL,
+	"PIPE":     unix.SIGPIPE,
+	"POLL":     unix.SIGPOLL,
+	"PROF":     unix.SIGPROF,
+	"PWR":      unix.SIGPWR,
+	"QUIT":     unix.SIGQUIT,
+	"SEGV":     unix.SIGSEGV,
+	"STKFLT":   unix.SIGSTKFLT,
+	"STOP":     unix.SIGSTOP,
+	"SYS":      unix.SIGSYS,
+	"TERM":     unix.SIGTERM,
+	"TRAP":     unix.SIGTRAP,
+	"TSTP":     unix.SIGTSTP,
+	"TTIN":     unix.SIGTTIN,
+	"TTOU":     unix.SIGTTOU,
+	"URG":      unix.SIGURG,
+	"USR1":     unix.SIGUSR1,
+	"USR2":     unix.SIGUSR2,
+	"VTALRM":   unix.SIGVTALRM,
+	"WINCH":    unix.SIGWINCH,
+	"XCPU":     unix.SIGXCPU,
+	"XFSZ":     unix.SIGXFSZ,
+	"RTMIN":    sigrtmin,
+	"RTMIN+1":  sigrtmin + 1,
+	"RTMIN+2":  sigrtmin + 2,
+	"RTMIN+3":  sigrtmin + 3,
+	"RTMIN+4":  sigrtmin + 4,
+	"RTMIN+5":  sigrtmin + 5,
+	"RTMIN+6":  sigrtmin + 6,
+	"RTMIN+7":  sigrtmin + 7,
+	"RTMIN+8":  sigrtmin + 8,
+	"RTMIN+9":  sigrtmin + 9,
+	"RTMIN+10": sigrtmin + 10,
+	"RTMIN+11": sigrtmin + 11,
+	"RTMIN+12": sigrtmin + 12,
+	"RTMIN+13": sigrtmin + 13,
+	"RTMIN+14": sigrtmin + 14,
+	"RTMIN+15": sigrtmin + 15,
+	"RTMAX-14": sigrtmax - 14,
+	"RTMAX-13": sigrtmax - 13,
+	"RTMAX-12": sigrtmax - 12,
+	"RTMAX-11": sigrtmax - 11,
+	"RTMAX-10": sigrtmax - 10,
+	"RTMAX-9":  sigrtmax - 9,
+	"RTMAX-8":  sigrtmax - 8,
+	"RTMAX-7":  sigrtmax - 7,
+	"RTMAX-6":  sigrtmax - 6,
+	"RTMAX-5":  sigrtmax - 5,
+	"RTMAX-4":  sigrtmax - 4,
+	"RTMAX-3":  sigrtmax - 3,
+	"RTMAX-2":  sigrtmax - 2,
+	"RTMAX-1":  sigrtmax - 1,
+	"RTMAX":    sigrtmax,
+}

vendor/github.com/rootless-containers/rootlesskit/pkg/sigproxy/signal/signal_linux_mipsx.go

+// +build linux
+// +build mips mipsle mips64 mips64le
+
+package signal
+
+import (
+	"syscall"
+
+	"golang.org/x/sys/unix"
+)
+
+const (
+	sigrtmin = 34
+	sigrtmax = 127
+)
+
+// SignalMap is a map of Linux signals.
+var SignalMap = map[string]syscall.Signal{
+	"ABRT":     unix.SIGABRT,
+	"ALRM":     unix.SIGALRM,
+	"BUS":      unix.SIGBUS,
+	"CHLD":     unix.SIGCHLD,
+	"CLD":      unix.SIGCLD,
+	"CONT":     unix.SIGCONT,
+	"FPE":      unix.SIGFPE,
+	"HUP":      unix.SIGHUP,
+	"ILL":      unix.SIGILL,
+	"INT":      unix.SIGINT,
+	"IO":       unix.SIGIO,
+	"IOT":      unix.SIGIOT,
+	"KILL":     unix.SIGKILL,
+	"PIPE":     unix.SIGPIPE,
+	"POLL":     unix.SIGPOLL,
+	"PROF":     unix.SIGPROF,
+	"PWR":      unix.SIGPWR,
+	"QUIT":     unix.SIGQUIT,
+	"SEGV":     unix.SIGSEGV,
+	"EMT":      unix.SIGEMT,
+	"STOP":     unix.SIGSTOP,
+	"SYS":      unix.SIGSYS,
+	"TERM":     unix.SIGTERM,
+	"TRAP":     unix.SIGTRAP,
+	"TSTP":     unix.SIGTSTP,
+	"TTIN":     unix.SIGTTIN,
+	"TTOU":     unix.SIGTTOU,
+	"URG":      unix.SIGURG,
+	"USR1":     unix.SIGUSR1,
+	"USR2":     unix.SIGUSR2,
+	"VTALRM":   unix.SIGVTALRM,
+	"WINCH":    unix.SIGWINCH,
+	"XCPU":     unix.SIGXCPU,
+	"XFSZ":     unix.SIGXFSZ,
+	"RTMIN":    sigrtmin,
+	"RTMIN+1":  sigrtmin + 1,
+	"RTMIN+2":  sigrtmin + 2,
+	"RTMIN+3":  sigrtmin + 3,
+	"RTMIN+4":  sigrtmin + 4,
+	"RTMIN+5":  sigrtmin + 5,
+	"RTMIN+6":  sigrtmin + 6,
+	"RTMIN+7":  sigrtmin + 7,
+	"RTMIN+8":  sigrtmin + 8,
+	"RTMIN+9":  sigrtmin + 9,
+	"RTMIN+10": sigrtmin + 10,
+	"RTMIN+11": sigrtmin + 11,
+	"RTMIN+12": sigrtmin + 12,
+	"RTMIN+13": sigrtmin + 13,
+	"RTMIN+14": sigrtmin + 14,
+	"RTMIN+15": sigrtmin + 15,
+	"RTMAX-14": sigrtmax - 14,
+	"RTMAX-13": sigrtmax - 13,
+	"RTMAX-12": sigrtmax - 12,
+	"RTMAX-11": sigrtmax - 11,
+	"RTMAX-10": sigrtmax - 10,
+	"RTMAX-9":  sigrtmax - 9,
+	"RTMAX-8":  sigrtmax - 8,
+	"RTMAX-7":  sigrtmax - 7,
+	"RTMAX-6":  sigrtmax - 6,
+	"RTMAX-5":  sigrtmax - 5,
+	"RTMAX-4":  sigrtmax - 4,
+	"RTMAX-3":  sigrtmax - 3,
+	"RTMAX-2":  sigrtmax - 2,
+	"RTMAX-1":  sigrtmax - 1,
+	"RTMAX":    sigrtmax,
+}

vendor/github.com/rootless-containers/rootlesskit/pkg/sigproxy/sigproxy.go

+package sigproxy
+
+import (
+	"context"
+	"os"
+
+	"github.com/sirupsen/logrus"
+	"golang.org/x/sys/unix"
+
+	"github.com/rootless-containers/rootlesskit/pkg/sigproxy/signal"
+)
+
+// ForwardAllSignals forwards signals.
+// Based on https://github.com/docker/cli/blob/ef2f64abbd37edfa148f745fa0013731b5074d1b/cli/command/container/tty.go#L99-L126
+func ForwardAllSignals(ctx context.Context, pid int) chan os.Signal {
+	sigc := make(chan os.Signal, 128)
+	signal.CatchAll(sigc)
+	go func() {
+		for s := range sigc {
+			if s == unix.SIGCHLD || s == unix.SIGPIPE || s == unix.SIGURG {
+				continue
+			}
+			us, ok := s.(unix.Signal)
+			if !ok {
+				logrus.Warnf("Unsupported signal %v", s)
+				continue
+			}
+			if err := unix.Kill(pid, us); err != nil {
+				logrus.WithError(err).Debugf("Error sending signal %v", s)
+			}
+		}
+	}()
+	return sigc
+}

vendor/github.com/sirupsen/logrus/.golangci.yml

+run:
+  # do not run on test files yet
+  tests: false
+
+# all available settings of specific linters
+linters-settings:
+  errcheck:
+    # report about not checking of errors in type assetions: `a := b.(MyStruct)`;
+    # default is false: such cases aren't reported by default.
+    check-type-assertions: false
+
+    # report about assignment of errors to blank identifier: `num, _ := strconv.Atoi(numStr)`;
+    # default is false: such cases aren't reported by default.
+    check-blank: false
+
+  lll:
+    line-length: 100
+    tab-width: 4
+
+  prealloc:
+    simple: false
+    range-loops: false
+    for-loops: false
+
+  whitespace:
+    multi-if: false   # Enforces newlines (or comments) after every multi-line if statement
+    multi-func: false # Enforces newlines (or comments) after every multi-line function signature
+
+linters:
+  enable:
+    - megacheck
+    - govet
+  disable:
+    - maligned
+    - prealloc
+  disable-all: false
+  presets:
+    - bugs
+    - unused
+  fast: false

vendor/github.com/sirupsen/logrus/.travis.yml

@@ -4,21 +4,13 @@ git:
   depth: 1
 env:
   - GO111MODULE=on
-  - GO111MODULE=off
-go: [ 1.11.x, 1.12.x ]
-os: [ linux, osx ]
-matrix:
-  exclude:
-    - go: 1.12.x
-      env: GO111MODULE=off
-    - go: 1.11.x
-      os: osx
+go: [1.13.x, 1.14.x]
+os: [linux, osx]
 install:
   - ./travis/install.sh
-  - if [[ "$GO111MODULE" ==  "on" ]]; then go mod download; fi
-  - if [[ "$GO111MODULE" == "off" ]]; then go get github.com/stretchr/testify/assert golang.org/x/sys/unix github.com/konsorten/go-windows-terminal-sequences; fi
 script:
   - ./travis/cross_build.sh
+  - ./travis/lint.sh
   - export GOMAXPROCS=4
   - export GORACE=halt_on_error=1
   - go test -race -v ./...

vendor/github.com/sirupsen/logrus/CHANGELOG.md

+# 1.6.0
+Fixes:
+  * end of line cleanup
+  * revert the entry concurrency bug fix whic leads to deadlock under some circumstances
+  * update dependency on go-windows-terminal-sequences to fix a crash with go 1.14
+
+Features:
+  * add an option to the `TextFormatter` to completely disable fields quoting
+
+# 1.5.0
+Code quality:
+  * add golangci linter run on travis
+
+Fixes:
+  * add mutex for hooks concurrent access on `Entry` data
+  * caller function field for go1.14
+  * fix build issue for gopherjs target
+
+Feature:
+  * add an hooks/writer sub-package whose goal is to split output on different stream depending on the trace level
+  * add a `DisableHTMLEscape` option in the `JSONFormatter`
+  * add `ForceQuote` and `PadLevelText` options in the `TextFormatter`
+
 # 1.4.2
   * Fixes build break for plan9, nacl, solaris
 # 1.4.1
 This new release introduces:
   * Enhance TextFormatter to not print caller information when they are empty (#944)
-  * Remove dependency on golang.org/x/crypto (#932, #943) 
+  * Remove dependency on golang.org/x/crypto (#932, #943)
 
 Fixes:
   * Fix Entry.WithContext method to return a copy of the initial entry (#941)
@@ -11,7 +34,7 @@ Fixes:
 # 1.4.0
 This new release introduces:
   * Add `DeferExitHandler`, similar to `RegisterExitHandler` but prepending the handler to the list of handlers (semantically like `defer`) (#848).
-  * Add `CallerPrettyfier` to `JSONFormatter` and `TextFormatter (#909, #911)
+  * Add `CallerPrettyfier` to `JSONFormatter` and `TextFormatter` (#909, #911)
   * Add `Entry.WithContext()` and `Entry.Context`, to set a context on entries to be used e.g. in hooks (#919).
 
 Fixes:

vendor/github.com/sirupsen/logrus/README.md

-# Logrus <img src="http://i.imgur.com/hTeVwmJ.png" width="40" height="40" alt=":walrus:" class="emoji" title=":walrus:"/>&nbsp;[![Build Status](https://travis-ci.org/sirupsen/logrus.svg?branch=master)](https://travis-ci.org/sirupsen/logrus)&nbsp;[![GoDoc](https://godoc.org/github.com/sirupsen/logrus?status.svg)](https://godoc.org/github.com/sirupsen/logrus)
+# Logrus <img src="http://i.imgur.com/hTeVwmJ.png" width="40" height="40" alt=":walrus:" class="emoji" title=":walrus:"/> [![Build Status](https://travis-ci.org/sirupsen/logrus.svg?branch=master)](https://travis-ci.org/sirupsen/logrus) [![GoDoc](https://godoc.org/github.com/sirupsen/logrus?status.svg)](https://godoc.org/github.com/sirupsen/logrus)
 
 Logrus is a structured logger for Go (golang), completely API compatible with
 the standard library logger.
 
+**Logrus is in maintenance-mode.** We will not be introducing new features. It's
+simply too hard to do in a way that won't break many people's projects, which is
+the last thing you want from your Logging library (again...).
+
+This does not mean Logrus is dead. Logrus will continue to be maintained for
+security, (backwards compatible) bug fixes, and performance (where we are
+limited by the interface). 
+
+I believe Logrus' biggest contribution is to have played a part in today's
+widespread use of structured logging in Golang. There doesn't seem to be a
+reason to do a major, breaking iteration into Logrus V2, since the fantastic Go
+community has built those independently. Many fantastic alternatives have sprung
+up. Logrus would look like those, had it been re-designed with what we know
+about structured logging in Go today. Check out, for example,
+[Zerolog][zerolog], [Zap][zap], and [Apex][apex].
+
+[zerolog]: https://github.com/rs/zerolog
+[zap]: https://github.com/uber-go/zap
+[apex]: https://github.com/apex/log
+
 **Seeing weird case-sensitive problems?** It's in the past been possible to
 import Logrus as both upper- and lower-case. Due to the Go package environment,
 this caused issues in the community and we needed a standard. Some environments
@@ -15,11 +35,6 @@ comments](https://github.com/sirupsen/logrus/issues/553#issuecomment-306591437).
 For an in-depth explanation of the casing issue, see [this
 comment](https://github.com/sirupsen/logrus/issues/570#issuecomment-313933276).
 
-**Are you interested in assisting in maintaining Logrus?** Currently I have a
-lot of obligations, and I am unable to provide Logrus with the maintainership it
-needs. If you'd like to help, please reach out to me at `simon at author's
-username dot com`.
-
 Nicely color-coded in development (when a TTY is attached, otherwise just
 plain text):
 
@@ -187,7 +202,7 @@ func main() {
   log.Out = os.Stdout
 
   // You could set this to any `io.Writer` such as a file
-  // file, err := os.OpenFile("logrus.log", os.O_CREATE|os.O_WRONLY, 0666)
+  // file, err := os.OpenFile("logrus.log", os.O_CREATE|os.O_WRONLY|os.O_APPEND, 0666)
   // if err == nil {
   //  log.Out = file
   // } else {
@@ -272,7 +287,7 @@ func init() {
 ```
 Note: Syslog hook also support connecting to local syslog (Ex. "/dev/log" or "/var/run/syslog" or "/var/run/log"). For the detail, please check the [syslog hook README](hooks/syslog/README.md).
 
-A list of currently known of service hook can be found in this wiki [page](https://github.com/sirupsen/logrus/wiki/Hooks)
+A list of currently known service hooks can be found in this wiki [page](https://github.com/sirupsen/logrus/wiki/Hooks)
 
 
 #### Level logging
@@ -354,6 +369,7 @@ The built-in logging formatters are:
     [github.com/mattn/go-colorable](https://github.com/mattn/go-colorable).
   * When colors are enabled, levels are truncated to 4 characters by default. To disable
     truncation set the `DisableLevelTruncation` field to `true`.
+  * When outputting to a TTY, it's often helpful to visually scan down a column where all the levels are the same width. Setting the `PadLevelText` field to `true` enables this behavior, by adding padding to the level text.
   * All options are listed in the [generated docs](https://godoc.org/github.com/sirupsen/logrus#TextFormatter).
 * `logrus.JSONFormatter`. Logs fields as JSON.
   * All options are listed in the [generated docs](https://godoc.org/github.com/sirupsen/logrus#JSONFormatter).
@@ -364,8 +380,10 @@ Third party logging formatters:
 * [`GELF`](https://github.com/fabienm/go-logrus-formatters). Formats entries so they comply to Graylog's [GELF 1.1 specification](http://docs.graylog.org/en/2.4/pages/gelf.html).
 * [`logstash`](https://github.com/bshuster-repo/logrus-logstash-hook). Logs fields as [Logstash](http://logstash.net) Events.
 * [`prefixed`](https://github.com/x-cray/logrus-prefixed-formatter). Displays log entry source along with alternative layout.
-* [`zalgo`](https://github.com/aybabtme/logzalgo). Invoking the P͉̫o̳̼̊w̖͈̰͎e̬͔̭͂r͚̼̹̲ ̫͓͉̳͈ō̠͕͖̚f̝͍̠ ͕̲̞͖͑Z̖̫̤̫ͪa͉̬͈̗l͖͎g̳̥o̰̥̅!̣͔̲̻͊̄ ̙̘̦̹̦.
+* [`zalgo`](https://github.com/aybabtme/logzalgo). Invoking the Power of Zalgo.
 * [`nested-logrus-formatter`](https://github.com/antonfisher/nested-logrus-formatter). Converts logrus fields to a nested structure.
+* [`powerful-logrus-formatter`](https://github.com/zput/zxcTool). get fileName, log's line number and the latest function's name when print log; Sava log to files.
+* [`caption-json-formatter`](https://github.com/nolleh/caption_json_formatter). logrus's message json formatter with human-readable caption added.
 
 You can define your formatter by implementing the `Formatter` interface,
 requiring a `Format` method. `Format` takes an `*Entry`. `entry.Data` is a
@@ -430,14 +448,14 @@ entries. It should not be a feature of the application-level logger.
 
 | Tool | Description |
 | ---- | ----------- |
-|[Logrus Mate](https://github.com/gogap/logrus_mate)|Logrus mate is a tool for Logrus to manage loggers, you can initial logger's level, hook and formatter by config file, the logger will generated with different config at different environment.|
+|[Logrus Mate](https://github.com/gogap/logrus_mate)|Logrus mate is a tool for Logrus to manage loggers, you can initial logger's level, hook and formatter by config file, the logger will be generated with different configs in different environments.|
 |[Logrus Viper Helper](https://github.com/heirko/go-contrib/tree/master/logrusHelper)|An Helper around Logrus to wrap with spf13/Viper to load configuration with fangs! And to simplify Logrus configuration use some behavior of [Logrus Mate](https://github.com/gogap/logrus_mate). [sample](https://github.com/heirko/iris-contrib/blob/master/middleware/logrus-logger/example) |
 
 #### Testing
 
 Logrus has a built in facility for asserting the presence of log messages. This is implemented through the `test` hook and provides:
 
-* decorators for existing logger (`test.NewLocal` and `test.NewGlobal`) which basically just add the `test` hook
+* decorators for existing logger (`test.NewLocal` and `test.NewGlobal`) which basically just adds the `test` hook
 * a test logger (`test.NewNullLogger`) that just records log messages (and does not output any):
 
 ```go
@@ -465,7 +483,7 @@ func TestSomething(t*testing.T){
 
 Logrus can register one or more functions that will be called when any `fatal`
 level message is logged. The registered handlers will be executed before
-logrus performs a `os.Exit(1)`. This behavior may be helpful if callers need
+logrus performs an `os.Exit(1)`. This behavior may be helpful if callers need
 to gracefully shutdown. Unlike a `panic("Something went wrong...")` call which can be intercepted with a deferred `recover` a call to `os.Exit(1)` can not be intercepted.
 
 ```
@@ -490,6 +508,6 @@ Situation when locking is not needed includes:
 
   1) logger.Out is protected by locks.
 
-  2) logger.Out is a os.File handler opened with `O_APPEND` flag, and every write is smaller than 4k. (This allow multi-thread/multi-process writing)
+  2) logger.Out is an os.File handler opened with `O_APPEND` flag, and every write is smaller than 4k. (This allows multi-thread/multi-process writing)
 
      (Refer to http://www.notthewizard.com/2014/06/17/are-files-appends-really-atomic/)

vendor/github.com/sirupsen/logrus/appveyor.yml

-version: "{build}"
-platform: x64
-clone_folder: c:\gopath\src\github.com\sirupsen\logrus
-environment:  
-  GOPATH: c:\gopath
-branches:  
-  only:
-    - master
-install:  
-  - set PATH=%GOPATH%\bin;c:\go\bin;%PATH%
-  - go version
-build_script:  
-  - go get -t
-  - go test
+version: "{build}"
+platform: x64
+clone_folder: c:\gopath\src\github.com\sirupsen\logrus
+environment:
+  GOPATH: c:\gopath
+branches:
+  only:
+    - master
+install:
+  - set PATH=%GOPATH%\bin;c:\go\bin;%PATH%
+  - go version
+build_script:
+  - go get -t
+  - go test

vendor/github.com/sirupsen/logrus/entry.go

@@ -85,10 +85,15 @@ func NewEntry(logger *Logger) *Entry {
 	}
 }
 
+// Returns the bytes representation of this entry from the formatter.
+func (entry *Entry) Bytes() ([]byte, error) {
+	return entry.Logger.Formatter.Format(entry)
+}
+
 // Returns the string representation from the reader and ultimately the
 // formatter.
 func (entry *Entry) String() (string, error) {
-	serialized, err := entry.Logger.Formatter.Format(entry)
+	serialized, err := entry.Bytes()
 	if err != nil {
 		return "", err
 	}
@@ -103,7 +108,11 @@ func (entry *Entry) WithError(err error) *Entry {
 
 // Add a context to the Entry.
 func (entry *Entry) WithContext(ctx context.Context) *Entry {
-	return &Entry{Logger: entry.Logger, Data: entry.Data, Time: entry.Time, err: entry.err, Context: ctx}
+	dataCopy := make(Fields, len(entry.Data))
+	for k, v := range entry.Data {
+		dataCopy[k] = v
+	}
+	return &Entry{Logger: entry.Logger, Data: dataCopy, Time: entry.Time, err: entry.err, Context: ctx}
 }
 
 // Add a single field to the Entry.
@@ -144,7 +153,11 @@ func (entry *Entry) WithFields(fields Fields) *Entry {
 
 // Overrides the time of the Entry.
 func (entry *Entry) WithTime(t time.Time) *Entry {
-	return &Entry{Logger: entry.Logger, Data: entry.Data, Time: t, err: entry.err, Context: entry.Context}
+	dataCopy := make(Fields, len(entry.Data))
+	for k, v := range entry.Data {
+		dataCopy[k] = v
+	}
+	return &Entry{Logger: entry.Logger, Data: dataCopy, Time: t, err: entry.err, Context: entry.Context}
 }
 
 // getPackageName reduces a fully qualified function name to the package name
@@ -165,15 +178,20 @@ func getPackageName(f string) string {
 
 // getCaller retrieves the name of the first non-logrus calling function
 func getCaller() *runtime.Frame {
-
 	// cache this package's fully-qualified name
 	callerInitOnce.Do(func() {
-		pcs := make([]uintptr, 2)
+		pcs := make([]uintptr, maximumCallerDepth)
 		_ = runtime.Callers(0, pcs)
-		logrusPackage = getPackageName(runtime.FuncForPC(pcs[1]).Name())
 
-		// now that we have the cache, we can skip a minimum count of known-logrus functions
-		// XXX this is dubious, the number of frames may vary
+		// dynamic get the package name and the minimum caller depth
+		for i := 0; i < maximumCallerDepth; i++ {
+			funcName := runtime.FuncForPC(pcs[i]).Name()
+			if strings.Contains(funcName, "getCaller") {
+				logrusPackage = getPackageName(funcName)
+				break
+			}
+		}
+
 		minimumCallerDepth = knownLogrusFrames
 	})
 
@@ -187,7 +205,7 @@ func getCaller() *runtime.Frame {
 
 		// If the caller isn't part of this package, we're done
 		if pkg != logrusPackage {
-			return &f
+			return &f //nolint:scopelint
 		}
 	}
 
@@ -217,9 +235,11 @@ func (entry Entry) log(level Level, msg string) {
 
 	entry.Level = level
 	entry.Message = msg
+	entry.Logger.mu.Lock()
 	if entry.Logger.ReportCaller {
 		entry.Caller = getCaller()
 	}
+	entry.Logger.mu.Unlock()
 
 	entry.fireHooks()
 
@@ -255,11 +275,10 @@ func (entry *Entry) write() {
 	serialized, err := entry.Logger.Formatter.Format(entry)
 	if err != nil {
 		fmt.Fprintf(os.Stderr, "Failed to obtain reader, %v\n", err)
-	} else {
-		_, err = entry.Logger.Out.Write(serialized)
-		if err != nil {
-			fmt.Fprintf(os.Stderr, "Failed to write to log, %v\n", err)
-		}
+		return
+	}
+	if _, err = entry.Logger.Out.Write(serialized); err != nil {
+		fmt.Fprintf(os.Stderr, "Failed to write to log, %v\n", err)
 	}
 }
 

vendor/github.com/sirupsen/logrus/exported.go

@@ -80,7 +80,7 @@ func WithFields(fields Fields) *Entry {
 	return std.WithFields(fields)
 }
 
-// WithTime creats an entry from the standard logger and overrides the time of
+// WithTime creates an entry from the standard logger and overrides the time of
 // logs generated with it.
 //
 // Note that it doesn't log until you call Debug, Print, Info, Warn, Fatal

vendor/github.com/sirupsen/logrus/go.mod

@@ -2,9 +2,10 @@ module github.com/sirupsen/logrus
 
 require (
 	github.com/davecgh/go-spew v1.1.1 // indirect
-	github.com/konsorten/go-windows-terminal-sequences v1.0.1
+	github.com/konsorten/go-windows-terminal-sequences v1.0.3
 	github.com/pmezard/go-difflib v1.0.0 // indirect
-	github.com/stretchr/objx v0.1.1 // indirect
 	github.com/stretchr/testify v1.2.2
 	golang.org/x/sys v0.0.0-20190422165155-953cdadca894
 )
+
+go 1.13

vendor/github.com/sirupsen/logrus/go.sum

 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/konsorten/go-windows-terminal-sequences v0.0.0-20180402223658-b729f2633dfe h1:CHRGQ8V7OlCYtwaKPJi3iA7J+YdNKdo8j7nG5IgDhjs=
-github.com/konsorten/go-windows-terminal-sequences v0.0.0-20180402223658-b729f2633dfe/go.mod h1:T0+1ngSBFLxvqU3pZ+m/2kptfBszLMUkC4ZK/EgS/cQ=
 github.com/konsorten/go-windows-terminal-sequences v1.0.1 h1:mweAR1A6xJ3oS2pRaGiHgQ4OO8tzTaLawm8vnODuwDk=
 github.com/konsorten/go-windows-terminal-sequences v1.0.1/go.mod h1:T0+1ngSBFLxvqU3pZ+m/2kptfBszLMUkC4ZK/EgS/cQ=
+github.com/konsorten/go-windows-terminal-sequences v1.0.3 h1:CE8S1cTafDpPvMhIxNJKvHsGVBgn1xWYf1NbHQhywc8=
+github.com/konsorten/go-windows-terminal-sequences v1.0.3/go.mod h1:T0+1ngSBFLxvqU3pZ+m/2kptfBszLMUkC4ZK/EgS/cQ=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
-github.com/stretchr/objx v0.1.1 h1:2vfRuCMp5sSVIDSqO8oNnWJq7mPa6KVP3iPIwFBuy8A=
-github.com/stretchr/objx v0.1.1/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/testify v1.2.2 h1:bSDNvY7ZPG5RlJ8otE/7V6gMiyenm9RtJ7IUVIAoJ1w=
 github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
-golang.org/x/sys v0.0.0-20180905080454-ebe1bf3edb33 h1:I6FyU15t786LL7oL/hn43zqTuEGr4PN7F4XJ1p4E3Y8=
-golang.org/x/sys v0.0.0-20180905080454-ebe1bf3edb33/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190422165155-953cdadca894 h1:Cz4ceDQGXuKRnVBDTS23GTn/pU5OE2C0WrNTOYK1Uuc=
 golang.org/x/sys v0.0.0-20190422165155-953cdadca894/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=

vendor/github.com/sirupsen/logrus/json_formatter.go

@@ -28,6 +28,9 @@ type JSONFormatter struct {
 	// DisableTimestamp allows disabling automatic timestamps in output
 	DisableTimestamp bool
 
+	// DisableHTMLEscape allows disabling html escaping in output
+	DisableHTMLEscape bool
+
 	// DataKey allows users to put all the log entry parameters into a nested dictionary at a given key.
 	DataKey string
 
@@ -110,6 +113,7 @@ func (f *JSONFormatter) Format(entry *Entry) ([]byte, error) {
 	}
 
 	encoder := json.NewEncoder(b)
+	encoder.SetEscapeHTML(!f.DisableHTMLEscape)
 	if f.PrettyPrint {
 		encoder.SetIndent("", "  ")
 	}

vendor/github.com/sirupsen/logrus/logger.go

@@ -68,10 +68,10 @@ func (mw *MutexWrap) Disable() {
 // `Out` and `Hooks` directly on the default logger instance. You can also just
 // instantiate your own:
 //
-//    var log = &Logger{
+//    var log = &logrus.Logger{
 //      Out: os.Stderr,
-//      Formatter: new(JSONFormatter),
-//      Hooks: make(LevelHooks),
+//      Formatter: new(logrus.JSONFormatter),
+//      Hooks: make(logrus.LevelHooks),
 //      Level: logrus.DebugLevel,
 //    }
 //
@@ -100,8 +100,9 @@ func (logger *Logger) releaseEntry(entry *Entry) {
 	logger.entryPool.Put(entry)
 }
 
-// Adds a field to the log entry, note that it doesn't log until you call
-// Debug, Print, Info, Warn, Error, Fatal or Panic. It only creates a log entry.
+// WithField allocates a new entry and adds a field to it.
+// Debug, Print, Info, Warn, Error, Fatal or Panic must be then applied to
+// this new returned entry.
 // If you want multiple fields, use `WithFields`.
 func (logger *Logger) WithField(key string, value interface{}) *Entry {
 	entry := logger.newEntry()

vendor/github.com/sirupsen/logrus/logrus.go

@@ -51,7 +51,7 @@ func (level *Level) UnmarshalText(text []byte) error {
 		return err
 	}
 
-	*level = Level(l)
+	*level = l
 
 	return nil
 }

vendor/github.com/sirupsen/logrus/terminal_check_bsd.go

 // +build darwin dragonfly freebsd netbsd openbsd
+// +build !js
 
 package logrus
 
@@ -10,4 +11,3 @@ func isTerminal(fd int) bool {
 	_, err := unix.IoctlGetTermios(fd, ioctlReadTermios)
 	return err == nil
 }
-

vendor/github.com/sirupsen/logrus/terminal_check_js.go

+// +build js
+
+package logrus
+
+func isTerminal(fd int) bool {
+	return false
+}

vendor/github.com/sirupsen/logrus/terminal_check_unix.go

 // +build linux aix
+// +build !js
 
 package logrus
 
@@ -10,4 +11,3 @@ func isTerminal(fd int) bool {
 	_, err := unix.IoctlGetTermios(fd, ioctlReadTermios)
 	return err == nil
 }
-

vendor/github.com/sirupsen/logrus/text_formatter.go

@@ -6,9 +6,11 @@ import (
 	"os"
 	"runtime"
 	"sort"
+	"strconv"
 	"strings"
 	"sync"
 	"time"
+	"unicode/utf8"
 )
 
 const (
@@ -32,6 +34,14 @@ type TextFormatter struct {
 	// Force disabling colors.
 	DisableColors bool
 
+	// Force quoting of all values
+	ForceQuote bool
+
+	// DisableQuote disables quoting for all values.
+	// DisableQuote will have a lower priority than ForceQuote.
+	// If both of them are set to true, quote will be forced on all values.
+	DisableQuote bool
+
 	// Override coloring based on CLICOLOR and CLICOLOR_FORCE. - https://bixense.com/clicolors/
 	EnvironmentOverrideColors bool
 
@@ -57,6 +67,10 @@ type TextFormatter struct {
 	// Disables the truncation of the level text to 4 characters.
 	DisableLevelTruncation bool
 
+	// PadLevelText Adds padding the level text so that all the levels output at the same length
+	// PadLevelText is a superset of the DisableLevelTruncation option
+	PadLevelText bool
+
 	// QuoteEmptyFields will wrap empty fields in quotes if true
 	QuoteEmptyFields bool
 
@@ -79,23 +93,32 @@ type TextFormatter struct {
 	CallerPrettyfier func(*runtime.Frame) (function string, file string)
 
 	terminalInitOnce sync.Once
+
+	// The max length of the level text, generated dynamically on init
+	levelTextMaxLength int
 }
 
 func (f *TextFormatter) init(entry *Entry) {
 	if entry.Logger != nil {
 		f.isTerminal = checkIfTerminal(entry.Logger.Out)
 	}
+	// Get the max length of the level text
+	for _, level := range AllLevels {
+		levelTextLength := utf8.RuneCount([]byte(level.String()))
+		if levelTextLength > f.levelTextMaxLength {
+			f.levelTextMaxLength = levelTextLength
+		}
+	}
 }
 
 func (f *TextFormatter) isColored() bool {
 	isColored := f.ForceColors || (f.isTerminal && (runtime.GOOS != "windows"))
 
 	if f.EnvironmentOverrideColors {
-		if force, ok := os.LookupEnv("CLICOLOR_FORCE"); ok && force != "0" {
+		switch force, ok := os.LookupEnv("CLICOLOR_FORCE"); {
+		case ok && force != "0":
 			isColored = true
-		} else if ok && force == "0" {
-			isColored = false
-		} else if os.Getenv("CLICOLOR") == "0" {
+		case ok && force == "0", os.Getenv("CLICOLOR") == "0":
 			isColored = false
 		}
 	}
@@ -217,9 +240,18 @@ func (f *TextFormatter) printColored(b *bytes.Buffer, entry *Entry, keys []strin
 	}
 
 	levelText := strings.ToUpper(entry.Level.String())
-	if !f.DisableLevelTruncation {
+	if !f.DisableLevelTruncation && !f.PadLevelText {
 		levelText = levelText[0:4]
 	}
+	if f.PadLevelText {
+		// Generates the format string used in the next line, for example "%-6s" or "%-7s".
+		// Based on the max level text length.
+		formatString := "%-" + strconv.Itoa(f.levelTextMaxLength) + "s"
+		// Formats the level text by appending spaces up to the max length, for example:
+		// 	- "INFO   "
+		//	- "WARNING"
+		levelText = fmt.Sprintf(formatString, levelText)
+	}
 
 	// Remove a single newline if it already exists in the message to keep
 	// the behavior of logrus text_formatter the same as the stdlib log package
@@ -243,11 +275,12 @@ func (f *TextFormatter) printColored(b *bytes.Buffer, entry *Entry, keys []strin
 		}
 	}
 
-	if f.DisableTimestamp {
+	switch {
+	case f.DisableTimestamp:
 		fmt.Fprintf(b, "\x1b[%dm%s\x1b[0m%s %-44s ", levelColor, levelText, caller, entry.Message)
-	} else if !f.FullTimestamp {
+	case !f.FullTimestamp:
 		fmt.Fprintf(b, "\x1b[%dm%s\x1b[0m[%04d]%s %-44s ", levelColor, levelText, int(entry.Time.Sub(baseTimestamp)/time.Second), caller, entry.Message)
-	} else {
+	default:
 		fmt.Fprintf(b, "\x1b[%dm%s\x1b[0m[%s]%s %-44s ", levelColor, levelText, entry.Time.Format(timestampFormat), caller, entry.Message)
 	}
 	for _, k := range keys {
@@ -258,9 +291,15 @@ func (f *TextFormatter) printColored(b *bytes.Buffer, entry *Entry, keys []strin
 }
 
 func (f *TextFormatter) needsQuoting(text string) bool {
+	if f.ForceQuote {
+		return true
+	}
 	if f.QuoteEmptyFields && len(text) == 0 {
 		return true
 	}
+	if f.DisableQuote {
+		return false
+	}
 	for _, ch := range text {
 		if !((ch >= 'a' && ch <= 'z') ||
 			(ch >= 'A' && ch <= 'Z') ||

vendor/github.com/sirupsen/logrus/writer.go

@@ -6,10 +6,16 @@ import (
 	"runtime"
 )
 
+// Writer at INFO level. See WriterLevel for details.
 func (logger *Logger) Writer() *io.PipeWriter {
 	return logger.WriterLevel(InfoLevel)
 }
 
+// WriterLevel returns an io.Writer that can be used to write arbitrary text to
+// the logger at the given log level. Each line written to the writer will be
+// printed in the usual way using formatters and hooks. The writer is part of an
+// io.Pipe and it is the callers responsibility to close the writer when done.
+// This can be used to override the standard library logger easily.
 func (logger *Logger) WriterLevel(level Level) *io.PipeWriter {
 	return NewEntry(logger).WriterLevel(level)
 }

vendor/github.com/urfave/cli/v2/.gitignore

 *.coverprofile
+*.orig
 node_modules/
-vendor
+vendor
\ No newline at end of file
+.idea
+internal/*/built-example
+coverage.txt

vendor/github.com/urfave/cli/v2/.travis.yml

-language: go
-sudo: false
-dist: bionic
-osx_image: xcode10
-go:
-  - 1.11.x
-  - 1.12.x
-  - 1.13.x
-
-os:
-  - linux
-  - osx
-
-env:
-  GO111MODULE=on GOPROXY=https://proxy.golang.org
-
-cache:
-  directories:
-    - node_modules
-
-before_script:
-  - go get github.com/urfave/gfmrun/cmd/gfmrun
-  - go get golang.org/x/tools/cmd/goimports
-  - npm install markdown-toc
-  - go mod tidy
-
-script:
-  - go run build.go vet
-  - go run build.go test
-  - go run build.go gfmrun docs/v1/manual.md
-  - go run build.go toc docs/v1/manual.md
-  - go run build.go gfmrun docs/v2/manual.md
-  - go run build.go toc docs/v2/manual.md
-
-after_success:
-  - bash <(curl -s https://codecov.io/bash)

vendor/github.com/urfave/cli/v2/README.md

 cli
 ===
 
-[![Build Status](https://travis-ci.org/urfave/cli.svg?branch=master)](https://travis-ci.org/urfave/cli)
-[![Windows Build Status](https://ci.appveyor.com/api/projects/status/rtgk5xufi932pb2v?svg=true)](https://ci.appveyor.com/project/urfave/cli)
-
 [![GoDoc](https://godoc.org/github.com/urfave/cli?status.svg)](https://godoc.org/github.com/urfave/cli)
 [![codebeat](https://codebeat.co/badges/0a8f30aa-f975-404b-b878-5fab3ae1cc5f)](https://codebeat.co/projects/github-com-urfave-cli)
 [![Go Report Card](https://goreportcard.com/badge/urfave/cli)](https://goreportcard.com/report/urfave/cli)
@@ -20,12 +17,16 @@ Usage documentation exists for each major version. Don't know what version you'r
 - `v2` - [./docs/v2/manual.md](./docs/v2/manual.md)
 - `v1` - [./docs/v1/manual.md](./docs/v1/manual.md)
 
-### Using `v2` releases
+## Installation
 
-**Warning**: `v2` is in a beta state.
+Make sure you have a working Go environment.  Go version 1.11+ is supported. [See the install instructions for Go](http://golang.org/doc/install.html).
+
+Go Modules are strongly recommended when using this package. [See the go blog guide on using Go Modules](https://blog.golang.org/using-go-modules).
+
+### Using `v2` releases
 
 ```
-$ go get github.com/urfave/cli.v2
+$ GO111MODULE=on go get github.com/urfave/cli/v2
 ```
 
 ```go
@@ -39,7 +40,7 @@ import (
 ### Using `v1` releases
 
 ```
-$ go get github.com/urfave/cli
+$ GO111MODULE=on go get github.com/urfave/cli
 ```
 
 ```go
@@ -50,11 +51,6 @@ import (
 ...
 ```
 
-## Installation
-
-Make sure you have a working Go environment.  Go version 1.10+ is supported.  [See
-the install instructions for Go](http://golang.org/doc/install.html).
-
 ### GOPATH
 
 Make sure your `PATH` includes the `$GOPATH/bin` directory so your commands can
@@ -66,5 +62,5 @@ export PATH=$PATH:$GOPATH/bin
 ### Supported platforms
 
 cli is tested against multiple versions of Go on Linux, and against the latest
-released version of Go on OS X and Windows.  For full details, see
-[`./.travis.yml`](./.travis.yml) and [`./appveyor.yml`](./appveyor.yml).
+released version of Go on OS X and Windows. This project uses Github Actions for
+builds. For more build info, please look at the [./.github/workflows/cli.yml](https://github.com/urfave/cli/blob/master/.github/workflows/cli.yml).

vendor/github.com/urfave/cli/v2/app.go

 package cli
 
 import (
+	"context"
 	"flag"
 	"fmt"
 	"io"
 	"os"
 	"path/filepath"
-	"reflect"
 	"sort"
 	"time"
 )
 
 var (
-	changeLogURL            = "https://github.com/urfave/cli/blob/master/CHANGELOG.md"
+	changeLogURL            = "https://github.com/urfave/cli/blob/master/docs/CHANGELOG.md"
 	appActionDeprecationURL = fmt.Sprintf("%s#deprecated-cli-app-action-signature", changeLogURL)
 	contactSysadmin         = "This is an error in the application.  Please contact the distributor of this application if this is not you."
 	errInvalidActionType    = NewExitError("ERROR invalid Action type. "+
@@ -43,8 +43,11 @@ type App struct {
 	Flags []Flag
 	// Boolean to enable bash completion commands
 	EnableBashCompletion bool
-	// Boolean to hide built-in help command
+	// Boolean to hide built-in help command and help flag
 	HideHelp bool
+	// Boolean to hide built-in help command but keep help flag.
+	// Ignored if HideHelp is true.
+	HideHelpCommand bool
 	// Boolean to hide built-in version flag and the VERSION section of help
 	HideVersion bool
 	// categories contains the categorized commands and is populated on app startup
@@ -110,7 +113,6 @@ func NewApp() *App {
 		HelpName:     filepath.Base(os.Args[0]),
 		Usage:        "A new cli application",
 		UsageText:    "",
-		Version:      "0.0.0",
 		BashComplete: DefaultAppComplete,
 		Action:       helpCommand.Action,
 		Compiled:     compileTime(),
@@ -141,7 +143,7 @@ func (a *App) Setup() {
 	}
 
 	if a.Version == "" {
-		a.Version = "0.0.0"
+		a.HideVersion = true
 	}
 
 	if a.BashComplete == nil {
@@ -171,7 +173,9 @@ func (a *App) Setup() {
 	a.Commands = newCommands
 
 	if a.Command(helpCommand.Name) == nil && !a.HideHelp {
-		a.appendCommand(helpCommand)
+		if !a.HideHelpCommand {
+			a.appendCommand(helpCommand)
+		}
 
 		if HelpFlag != nil {
 			a.appendFlag(HelpFlag)
@@ -208,6 +212,13 @@ func (a *App) useShortOptionHandling() bool {
 // Run is the entry point to the cli app. Parses the arguments slice and routes
 // to the proper flag/args combination
 func (a *App) Run(arguments []string) (err error) {
+	return a.RunContext(context.Background(), arguments)
+}
+
+// RunContext is like Run except it takes a Context that will be
+// passed to its commands and sub-commands. Through this, you can
+// propagate timeouts and cancellation requests
+func (a *App) RunContext(ctx context.Context, arguments []string) (err error) {
 	a.Setup()
 
 	// handle the completion flag separately from the flagset since
@@ -223,9 +234,9 @@ func (a *App) Run(arguments []string) (err error) {
 		return err
 	}
 
-	err = parseIter(set, a, arguments[1:])
+	err = parseIter(set, a, arguments[1:], shellComplete)
 	nerr := normalizeFlags(a.Flags, set)
-	context := NewContext(a, set, nil)
+	context := NewContext(a, set, &Context{Context: ctx})
 	if nerr != nil {
 		_, _ = fmt.Fprintln(a.Writer, nerr)
 		_ = ShowAppHelp(context)
@@ -322,19 +333,9 @@ func (a *App) RunAndExitOnError() {
 // RunAsSubcommand invokes the subcommand given the context, parses ctx.Args() to
 // generate command-specific flags
 func (a *App) RunAsSubcommand(ctx *Context) (err error) {
+	// Setup also handles HideHelp and HideHelpCommand
 	a.Setup()
 
-	// append help to commands
-	if len(a.Commands) > 0 {
-		if a.Command(helpCommand.Name) == nil && !a.HideHelp {
-			a.appendCommand(helpCommand)
-
-			if HelpFlag != nil {
-				a.appendFlag(HelpFlag)
-			}
-		}
-	}
-
 	var newCmds []*Command
 	for _, c := range a.Commands {
 		if c.HelpName == "" {
@@ -349,7 +350,7 @@ func (a *App) RunAsSubcommand(ctx *Context) (err error) {
 		return err
 	}
 
-	err = parseIter(set, a, ctx.Args().Tail())
+	err = parseIter(set, a, ctx.Args().Tail(), ctx.shellComplete)
 	nerr := normalizeFlags(a.Flags, set)
 	context := NewContext(a, set, ctx)
 
@@ -478,16 +479,6 @@ func (a *App) VisibleFlags() []Flag {
 	return visibleFlags(a.Flags)
 }
 
-func (a *App) hasFlag(flag Flag) bool {
-	for _, f := range a.Flags {
-		if reflect.DeepEqual(flag, f) {
-			return true
-		}
-	}
-
-	return false
-}
-
 func (a *App) errWriter() io.Writer {
 	// When the app ErrWriter is nil use the package level one.
 	if a.ErrWriter == nil {

vendor/github.com/urfave/cli/v2/appveyor.yml

-version: "{build}"
-
-os: Windows Server 2016
-
-image: Visual Studio 2017
-
-clone_folder: c:\gopath\src\github.com\urfave\cli
-
-cache:
-  - node_modules
-
-environment:
-  GOPATH: C:\gopath
-  GOVERSION: 1.11.x
-  GO111MODULE: on
-  GOPROXY: https://proxy.golang.org
-
-install:
-  - set PATH=%GOPATH%\bin;C:\go\bin;%PATH%
-  - go version
-  - go env
-  - go get github.com/urfave/gfmrun/cmd/gfmrun
-  - go get golang.org/x/tools/cmd/goimports
-  - go mod tidy
-
-build_script:
-  - go run build.go vet
-  - go run build.go test
-  - go run build.go gfmrun docs/v1/manual.md

vendor/github.com/urfave/cli/v2/category.go

 package cli
 
+// CommandCategories interface allows for category manipulation
 type CommandCategories interface {
 	// AddCommand adds a command to a category, creating a new category if necessary.
 	AddCommand(category string, command *Command)

vendor/github.com/urfave/cli/v2/command.go

@@ -41,8 +41,11 @@ type Command struct {
 	Flags []Flag
 	// Treat all flags as normal arguments if true
 	SkipFlagParsing bool
-	// Boolean to hide built-in help command
+	// Boolean to hide built-in help command and help flag
 	HideHelp bool
+	// Boolean to hide built-in help command but keep help flag
+	// Ignored if HideHelp is true.
+	HideHelpCommand bool
 	// Boolean to hide this command from help or completion
 	Hidden bool
 	// Boolean to enable short-option handling so user can combine several
@@ -100,7 +103,7 @@ func (c *Command) Run(ctx *Context) (err error) {
 		c.UseShortOptionHandling = true
 	}
 
-	set, err := c.parseFlags(ctx.Args())
+	set, err := c.parseFlags(ctx.Args(), ctx.shellComplete)
 
 	context := NewContext(ctx.App, set, ctx)
 	context.Command = c
@@ -174,7 +177,7 @@ func (c *Command) useShortOptionHandling() bool {
 	return c.UseShortOptionHandling
 }
 
-func (c *Command) parseFlags(args Args) (*flag.FlagSet, error) {
+func (c *Command) parseFlags(args Args, shellComplete bool) (*flag.FlagSet, error) {
 	set, err := c.newFlagSet()
 	if err != nil {
 		return nil, err
@@ -184,7 +187,7 @@ func (c *Command) parseFlags(args Args) (*flag.FlagSet, error) {
 		return set, set.Parse(append([]string{"--"}, args.Tail()...))
 	}
 
-	err = parseIter(set, c, args.Tail())
+	err = parseIter(set, c, args.Tail(), shellComplete)
 	if err != nil {
 		return nil, err
 	}
@@ -236,6 +239,7 @@ func (c *Command) startApp(ctx *Context) error {
 	app.Commands = c.Subcommands
 	app.Flags = c.Flags
 	app.HideHelp = c.HideHelp
+	app.HideHelpCommand = c.HideHelpCommand
 
 	app.Version = ctx.App.Version
 	app.HideVersion = ctx.App.HideVersion

vendor/github.com/urfave/cli/v2/context.go

@@ -5,10 +5,7 @@ import (
 	"errors"
 	"flag"
 	"fmt"
-	"os"
-	"os/signal"
 	"strings"
-	"syscall"
 )
 
 // Context is a type that is passed through to
@@ -20,7 +17,6 @@ type Context struct {
 	App           *App
 	Command       *Command
 	shellComplete bool
-	setFlags      map[string]bool
 	flagSet       *flag.FlagSet
 	parentContext *Context
 }
@@ -31,19 +27,15 @@ func NewContext(app *App, set *flag.FlagSet, parentCtx *Context) *Context {
 	if parentCtx != nil {
 		c.Context = parentCtx.Context
 		c.shellComplete = parentCtx.shellComplete
+		if parentCtx.flagSet == nil {
+			parentCtx.flagSet = &flag.FlagSet{}
+		}
 	}
 
 	c.Command = &Command{}
 
 	if c.Context == nil {
-		ctx, cancel := context.WithCancel(context.Background())
-		go func() {
-			defer cancel()
-			sigs := make(chan os.Signal, 1)
-			signal.Notify(sigs, syscall.SIGINT, syscall.SIGTERM)
-			<-sigs
-		}()
-		c.Context = ctx
+		c.Context = context.Background()
 	}
 
 	return c
@@ -114,8 +106,8 @@ func (c *Context) Lineage() []*Context {
 	return lineage
 }
 
-// value returns the value of the flag corresponding to `name`
-func (c *Context) value(name string) interface{} {
+// Value returns the value of the flag corresponding to `name`
+func (c *Context) Value(name string) interface{} {
 	return c.flagSet.Lookup(name).Value.(flag.Getter).Get()
 }
 

vendor/github.com/urfave/cli/v2/docs.go

@@ -48,8 +48,8 @@ func (a *App) writeDocTemplate(w io.Writer) error {
 	return t.ExecuteTemplate(w, name, &cliTemplate{
 		App:          a,
 		Commands:     prepareCommands(a.Commands, 0),
-		GlobalArgs:   prepareArgsWithValues(a.Flags),
-		SynopsisArgs: prepareArgsSynopsis(a.Flags),
+		GlobalArgs:   prepareArgsWithValues(a.VisibleFlags()),
+		SynopsisArgs: prepareArgsSynopsis(a.VisibleFlags()),
 	})
 }
 

vendor/github.com/urfave/cli/v2/errors.go

@@ -48,6 +48,7 @@ func (m *multiError) Errors() []error {
 	return errs
 }
 
+// ErrorFormatter is the interface that will suitably format the error output
 type ErrorFormatter interface {
 	Format(s fmt.State, verb rune)
 }

vendor/github.com/urfave/cli/v2/flag.go

@@ -36,7 +36,7 @@ var VersionFlag Flag = &BoolFlag{
 
 // HelpFlag prints the help for all commands and subcommands.
 // Set to nil to disable the flag.  The subcommand
-// will still be added unless HideHelp is set to true.
+// will still be added unless HideHelp or HideHelpCommand is set to true.
 var HelpFlag Flag = &BoolFlag{
 	Name:    "help",
 	Aliases: []string{"h"},
@@ -203,12 +203,9 @@ func withEnvHint(envVars []string, str string) string {
 	return str + envText
 }
 
-func flagNames(f Flag) []string {
+func flagNames(name string, aliases []string) []string {
 	var ret []string
 
-	name := flagStringField(f, "Name")
-	aliases := flagStringSliceField(f, "Aliases")
-
 	for _, part := range append([]string{name}, aliases...) {
 		// v1 -> v2 migration warning zone:
 		// Strip off anything after the first found comma or space, which
@@ -231,17 +228,6 @@ func flagStringSliceField(f Flag, name string) []string {
 	return []string{}
 }
 
-func flagStringField(f Flag, name string) string {
-	fv := flagValue(f)
-	field := fv.FieldByName(name)
-
-	if field.IsValid() {
-		return field.String()
-	}
-
-	return ""
-}
-
 func withFileHint(filePath, str string) string {
 	fileText := ""
 	if filePath != "" {
@@ -258,22 +244,26 @@ func flagValue(f Flag) reflect.Value {
 	return fv
 }
 
+func formatDefault(format string) string {
+	return " (default: " + format + ")"
+}
+
 func stringifyFlag(f Flag) string {
 	fv := flagValue(f)
 
-	switch f.(type) {
+	switch f := f.(type) {
 	case *IntSliceFlag:
 		return withEnvHint(flagStringSliceField(f, "EnvVars"),
-			stringifyIntSliceFlag(f.(*IntSliceFlag)))
+			stringifyIntSliceFlag(f))
 	case *Int64SliceFlag:
 		return withEnvHint(flagStringSliceField(f, "EnvVars"),
-			stringifyInt64SliceFlag(f.(*Int64SliceFlag)))
+			stringifyInt64SliceFlag(f))
 	case *Float64SliceFlag:
 		return withEnvHint(flagStringSliceField(f, "EnvVars"),
-			stringifyFloat64SliceFlag(f.(*Float64SliceFlag)))
+			stringifyFloat64SliceFlag(f))
 	case *StringSliceFlag:
 		return withEnvHint(flagStringSliceField(f, "EnvVars"),
-			stringifyStringSliceFlag(f.(*StringSliceFlag)))
+			stringifyStringSliceFlag(f))
 	}
 
 	placeholder, usage := unquoteUsage(fv.FieldByName("Usage").String())
@@ -283,20 +273,20 @@ func stringifyFlag(f Flag) string {
 	val := fv.FieldByName("Value")
 	if val.IsValid() {
 		needsPlaceholder = val.Kind() != reflect.Bool
-		defaultValueString = fmt.Sprintf(" (default: %v)", val.Interface())
+		defaultValueString = fmt.Sprintf(formatDefault("%v"), val.Interface())
 
 		if val.Kind() == reflect.String && val.String() != "" {
-			defaultValueString = fmt.Sprintf(" (default: %q)", val.String())
+			defaultValueString = fmt.Sprintf(formatDefault("%q"), val.String())
 		}
 	}
 
 	helpText := fv.FieldByName("DefaultText")
 	if helpText.IsValid() && helpText.String() != "" {
 		needsPlaceholder = val.Kind() != reflect.Bool
-		defaultValueString = fmt.Sprintf(" (default: %s)", helpText.String())
+		defaultValueString = fmt.Sprintf(formatDefault("%s"), helpText.String())
 	}
 
-	if defaultValueString == " (default: )" {
+	if defaultValueString == formatDefault("") {
 		defaultValueString = ""
 	}
 
@@ -365,7 +355,7 @@ func stringifySliceFlag(usage string, names, defaultVals []string) string {
 
 	defaultVal := ""
 	if len(defaultVals) > 0 {
-		defaultVal = fmt.Sprintf(" (default: %s)", strings.Join(defaultVals, ", "))
+		defaultVal = fmt.Sprintf(formatDefault("%s"), strings.Join(defaultVals, ", "))
 	}
 
 	usageWithDefault := strings.TrimSpace(fmt.Sprintf("%s%s", usage, defaultVal))

vendor/github.com/urfave/cli/v2/flag_bool.go

@@ -34,7 +34,7 @@ func (f *BoolFlag) String() string {
 
 // Names returns the names of the flag
 func (f *BoolFlag) Names() []string {
-	return flagNames(f)
+	return flagNames(f.Name, f.Aliases)
 }
 
 // IsRequired returns whether or not the flag is required

vendor/github.com/urfave/cli/v2/flag_duration.go

@@ -34,7 +34,7 @@ func (f *DurationFlag) String() string {
 
 // Names returns the names of the flag
 func (f *DurationFlag) Names() []string {
-	return flagNames(f)
+	return flagNames(f.Name, f.Aliases)
 }
 
 // IsRequired returns whether or not the flag is required

vendor/github.com/urfave/cli/v2/flag_float64.go

@@ -18,11 +18,11 @@ type Float64Flag struct {
 	Value       float64
 	DefaultText string
 	Destination *float64
-	HasBeenSet bool
+	HasBeenSet  bool
 }
 
 // IsSet returns whether or not the flag has been set through env or file
-func (f *Float64Flag)IsSet() bool {
+func (f *Float64Flag) IsSet() bool {
 	return f.HasBeenSet
 }
 
@@ -34,7 +34,7 @@ func (f *Float64Flag) String() string {
 
 // Names returns the names of the flag
 func (f *Float64Flag) Names() []string {
-	return flagNames(f)
+	return flagNames(f.Name, f.Aliases)
 }
 
 // IsRequired returns whether or not the flag is required

vendor/github.com/urfave/cli/v2/flag_float64_slice.go

@@ -90,7 +90,7 @@ func (f *Float64SliceFlag) String() string {
 
 // Names returns the names of the flag
 func (f *Float64SliceFlag) Names() []string {
-	return flagNames(f)
+	return flagNames(f.Name, f.Aliases)
 }
 
 // IsRequired returns whether or not the flag is required
@@ -155,11 +155,9 @@ func (c *Context) Float64Slice(name string) []float64 {
 func lookupFloat64Slice(name string, set *flag.FlagSet) []float64 {
 	f := set.Lookup(name)
 	if f != nil {
-		parsed, err := (f.Value.(*Float64Slice)).Value(), error(nil)
-		if err != nil {
-			return nil
+		if slice, ok := f.Value.(*Float64Slice); ok {
+			return slice.Value()
 		}
-		return parsed
 	}
 	return nil
 }

vendor/github.com/urfave/cli/v2/flag_generic.go

@@ -39,7 +39,7 @@ func (f *GenericFlag) String() string {
 
 // Names returns the names of the flag
 func (f *GenericFlag) Names() []string {
-	return flagNames(f)
+	return flagNames(f.Name, f.Aliases)
 }
 
 // IsRequired returns whether or not the flag is required

vendor/github.com/urfave/cli/v2/flag_int.go

@@ -34,7 +34,7 @@ func (f *IntFlag) String() string {
 
 // Names returns the names of the flag
 func (f *IntFlag) Names() []string {
-	return flagNames(f)
+	return flagNames(f.Name, f.Aliases)
 }
 
 // IsRequired returns whether or not the flag is required

vendor/github.com/urfave/cli/v2/flag_int64.go

@@ -34,7 +34,7 @@ func (f *Int64Flag) String() string {
 
 // Names returns the names of the flag
 func (f *Int64Flag) Names() []string {
-	return flagNames(f)
+	return flagNames(f.Name, f.Aliases)
 }
 
 // IsRequired returns whether or not the flag is required

vendor/github.com/urfave/cli/v2/flag_int64_slice.go

@@ -91,7 +91,7 @@ func (f *Int64SliceFlag) String() string {
 
 // Names returns the names of the flag
 func (f *Int64SliceFlag) Names() []string {
-	return flagNames(f)
+	return flagNames(f.Name, f.Aliases)
 }
 
 // IsRequired returns whether or not the flag is required
@@ -151,11 +151,9 @@ func (c *Context) Int64Slice(name string) []int64 {
 func lookupInt64Slice(name string, set *flag.FlagSet) []int64 {
 	f := set.Lookup(name)
 	if f != nil {
-		parsed, err := (f.Value.(*Int64Slice)).Value(), error(nil)
-		if err != nil {
-			return nil
+		if slice, ok := f.Value.(*Int64Slice); ok {
+			return slice.Value()
 		}
-		return parsed
 	}
 	return nil
 }

vendor/github.com/urfave/cli/v2/flag_int_slice.go

@@ -102,7 +102,7 @@ func (f *IntSliceFlag) String() string {
 
 // Names returns the names of the flag
 func (f *IntSliceFlag) Names() []string {
-	return flagNames(f)
+	return flagNames(f.Name, f.Aliases)
 }
 
 // IsRequired returns whether or not the flag is required
@@ -165,11 +165,9 @@ func (c *Context) IntSlice(name string) []int {
 func lookupIntSlice(name string, set *flag.FlagSet) []int {
 	f := set.Lookup(name)
 	if f != nil {
-		parsed, err := (f.Value.(*IntSlice)).Value(), error(nil)
-		if err != nil {
-			return nil
+		if slice, ok := f.Value.(*IntSlice); ok {
+			return slice.Value()
 		}
-		return parsed
 	}
 	return nil
 }

vendor/github.com/urfave/cli/v2/flag_path.go

@@ -30,7 +30,7 @@ func (f *PathFlag) String() string {
 
 // Names returns the names of the flag
 func (f *PathFlag) Names() []string {
-	return flagNames(f)
+	return flagNames(f.Name, f.Aliases)
 }
 
 // IsRequired returns whether or not the flag is required
@@ -72,7 +72,7 @@ func (f *PathFlag) Apply(set *flag.FlagSet) error {
 	return nil
 }
 
-// String looks up the value of a local PathFlag, returns
+// Path looks up the value of a local PathFlag, returns
 // "" if not found
 func (c *Context) Path(name string) string {
 	if fs := lookupFlagSet(name, c); fs != nil {

vendor/github.com/urfave/cli/v2/flag_string.go

@@ -31,7 +31,7 @@ func (f *StringFlag) String() string {
 
 // Names returns the names of the flag
 func (f *StringFlag) Names() []string {
-	return flagNames(f)
+	return flagNames(f.Name, f.Aliases)
 }
 
 // IsRequired returns whether or not the flag is required

vendor/github.com/urfave/cli/v2/flag_string_slice.go

@@ -71,6 +71,7 @@ type StringSliceFlag struct {
 	Value       *StringSlice
 	DefaultText string
 	HasBeenSet  bool
+	Destination *StringSlice
 }
 
 // IsSet returns whether or not the flag has been set through env or file
@@ -86,7 +87,7 @@ func (f *StringSliceFlag) String() string {
 
 // Names returns the names of the flag
 func (f *StringSliceFlag) Names() []string {
-	return flagNames(f)
+	return flagNames(f.Name, f.Aliases)
 }
 
 // IsRequired returns whether or not the flag is required
@@ -117,13 +118,20 @@ func (f *StringSliceFlag) GetValue() string {
 func (f *StringSliceFlag) Apply(set *flag.FlagSet) error {
 	if val, ok := flagFromEnvOrFile(f.EnvVars, f.FilePath); ok {
 		f.Value = &StringSlice{}
+		destination := f.Value
+		if f.Destination != nil {
+			destination = f.Destination
+		}
 
 		for _, s := range strings.Split(val, ",") {
-			if err := f.Value.Set(strings.TrimSpace(s)); err != nil {
+			if err := destination.Set(strings.TrimSpace(s)); err != nil {
 				return fmt.Errorf("could not parse %q as string value for flag %s: %s", val, f.Name, err)
 			}
 		}
 
+		// Set this to false so that we reset the slice if we then set values from
+		// flags that have already been set by the environment.
+		destination.hasBeenSet = false
 		f.HasBeenSet = true
 	}
 
@@ -131,6 +139,12 @@ func (f *StringSliceFlag) Apply(set *flag.FlagSet) error {
 		if f.Value == nil {
 			f.Value = &StringSlice{}
 		}
+
+		if f.Destination != nil {
+			set.Var(f.Destination, name, f.Usage)
+			continue
+		}
+
 		set.Var(f.Value, name, f.Usage)
 	}
 
@@ -149,11 +163,9 @@ func (c *Context) StringSlice(name string) []string {
 func lookupStringSlice(name string, set *flag.FlagSet) []string {
 	f := set.Lookup(name)
 	if f != nil {
-		parsed, err := (f.Value.(*StringSlice)).Value(), error(nil)
-		if err != nil {
-			return nil
+		if slice, ok := f.Value.(*StringSlice); ok {
+			return slice.Value()
 		}
-		return parsed
 	}
 	return nil
 }

vendor/github.com/urfave/cli/v2/flag_timestamp.go

+package cli
+
+import (
+	"flag"
+	"fmt"
+	"time"
+)
+
+// Timestamp wrap to satisfy golang's flag interface.
+type Timestamp struct {
+	timestamp  *time.Time
+	hasBeenSet bool
+	layout     string
+}
+
+// Timestamp constructor
+func NewTimestamp(timestamp time.Time) *Timestamp {
+	return &Timestamp{timestamp: &timestamp}
+}
+
+// Set the timestamp value directly
+func (t *Timestamp) SetTimestamp(value time.Time) {
+	if !t.hasBeenSet {
+		t.timestamp = &value
+		t.hasBeenSet = true
+	}
+}
+
+// Set the timestamp string layout for future parsing
+func (t *Timestamp) SetLayout(layout string) {
+	t.layout = layout
+}
+
+// Parses the string value to timestamp
+func (t *Timestamp) Set(value string) error {
+	timestamp, err := time.Parse(t.layout, value)
+	if err != nil {
+		return err
+	}
+
+	t.timestamp = &timestamp
+	t.hasBeenSet = true
+	return nil
+}
+
+// String returns a readable representation of this value (for usage defaults)
+func (t *Timestamp) String() string {
+	return fmt.Sprintf("%#v", t.timestamp)
+}
+
+// Value returns the timestamp value stored in the flag
+func (t *Timestamp) Value() *time.Time {
+	return t.timestamp
+}
+
+// Get returns the flag structure
+func (t *Timestamp) Get() interface{} {
+	return *t
+}
+
+// TimestampFlag is a flag with type time
+type TimestampFlag struct {
+	Name        string
+	Aliases     []string
+	Usage       string
+	EnvVars     []string
+	FilePath    string
+	Required    bool
+	Hidden      bool
+	Layout      string
+	Value       *Timestamp
+	DefaultText string
+	HasBeenSet  bool
+}
+
+// IsSet returns whether or not the flag has been set through env or file
+func (f *TimestampFlag) IsSet() bool {
+	return f.HasBeenSet
+}
+
+// String returns a readable representation of this value
+// (for usage defaults)
+func (f *TimestampFlag) String() string {
+	return FlagStringer(f)
+}
+
+// Names returns the names of the flag
+func (f *TimestampFlag) Names() []string {
+	return flagNames(f.Name, f.Aliases)
+}
+
+// IsRequired returns whether or not the flag is required
+func (f *TimestampFlag) IsRequired() bool {
+	return f.Required
+}
+
+// TakesValue returns true of the flag takes a value, otherwise false
+func (f *TimestampFlag) TakesValue() bool {
+	return true
+}
+
+// GetUsage returns the usage string for the flag
+func (f *TimestampFlag) GetUsage() string {
+	return f.Usage
+}
+
+// GetValue returns the flags value as string representation and an empty
+// string if the flag takes no value at all.
+func (f *TimestampFlag) GetValue() string {
+	if f.Value != nil {
+		return f.Value.timestamp.String()
+	}
+	return ""
+}
+
+// Apply populates the flag given the flag set and environment
+func (f *TimestampFlag) Apply(set *flag.FlagSet) error {
+	if f.Layout == "" {
+		return fmt.Errorf("timestamp Layout is required")
+	}
+	f.Value = &Timestamp{}
+	f.Value.SetLayout(f.Layout)
+
+	if val, ok := flagFromEnvOrFile(f.EnvVars, f.FilePath); ok {
+		if err := f.Value.Set(val); err != nil {
+			return fmt.Errorf("could not parse %q as timestamp value for flag %s: %s", val, f.Name, err)
+		}
+		f.HasBeenSet = true
+	}
+
+	for _, name := range f.Names() {
+		set.Var(f.Value, name, f.Usage)
+	}
+	return nil
+}
+
+// Timestamp gets the timestamp from a flag name
+func (c *Context) Timestamp(name string) *time.Time {
+	if fs := lookupFlagSet(name, c); fs != nil {
+		return lookupTimestamp(name, fs)
+	}
+	return nil
+}
+
+// Fetches the timestamp value from the local timestampWrap
+func lookupTimestamp(name string, set *flag.FlagSet) *time.Time {
+	f := set.Lookup(name)
+	if f != nil {
+		return (f.Value.(*Timestamp)).Value()
+	}
+	return nil
+}

vendor/github.com/urfave/cli/v2/flag_uint.go

@@ -34,7 +34,7 @@ func (f *UintFlag) String() string {
 
 // Names returns the names of the flag
 func (f *UintFlag) Names() []string {
-	return flagNames(f)
+	return flagNames(f.Name, f.Aliases)
 }
 
 // IsRequired returns whether or not the flag is required

vendor/github.com/urfave/cli/v2/flag_uint64.go

@@ -34,7 +34,7 @@ func (f *Uint64Flag) String() string {
 
 // Names returns the names of the flag
 func (f *Uint64Flag) Names() []string {
-	return flagNames(f)
+	return flagNames(f.Name, f.Aliases)
 }
 
 // IsRequired returns whether or not the flag is required

vendor/github.com/urfave/cli/v2/help.go

@@ -138,7 +138,7 @@ func printFlagSuggestions(lastArg string, flags []Flag, writer io.Writer) {
 		if bflag, ok := flag.(*BoolFlag); ok && bflag.Hidden {
 			continue
 		}
-		for _, name := range flag.Names(){
+		for _, name := range flag.Names() {
 			name = strings.TrimSpace(name)
 			// this will get total count utf8 letters in flag name
 			count := utf8.RuneCountInString(name)

vendor/github.com/urfave/cli/v2/parse.go

@@ -11,13 +11,18 @@ type iterativeParser interface {
 }
 
 // To enable short-option handling (e.g., "-it" vs "-i -t") we have to
-// iteratively catch parsing errors.  This way we achieve LR parsing without
+// iteratively catch parsing errors. This way we achieve LR parsing without
 // transforming any arguments. Otherwise, there is no way we can discriminate
 // combined short options from common arguments that should be left untouched.
-func parseIter(set *flag.FlagSet, ip iterativeParser, args []string) error {
+// Pass `shellComplete` to continue parsing options on failure during shell
+// completion when, the user-supplied options may be incomplete.
+func parseIter(set *flag.FlagSet, ip iterativeParser, args []string, shellComplete bool) error {
 	for {
 		err := set.Parse(args)
 		if !ip.useShortOptionHandling() || err == nil {
+			if shellComplete {
+				return nil
+			}
 			return err
 		}
 

vendor/github.com/urfave/cli/v2/template.go

@@ -56,10 +56,13 @@ OPTIONS:
 // cli.go uses text/template to render templates. You can
 // render custom help text by setting this variable.
 var SubcommandHelpTemplate = `NAME:
-   {{.HelpName}} - {{if .Description}}{{.Description}}{{else}}{{.Usage}}{{end}}
+   {{.HelpName}} - {{.Usage}}
 
 USAGE:
-   {{if .UsageText}}{{.UsageText}}{{else}}{{.HelpName}} command{{if .VisibleFlags}} [command options]{{end}} {{if .ArgsUsage}}{{.ArgsUsage}}{{else}}[arguments...]{{end}}{{end}}
+   {{if .UsageText}}{{.UsageText}}{{else}}{{.HelpName}} command{{if .VisibleFlags}} [command options]{{end}} {{if .ArgsUsage}}{{.ArgsUsage}}{{else}}[arguments...]{{end}}{{end}}{{if .Description}}
+
+DESCRIPTION:
+   {{.Description}}{{end}}
 
 COMMANDS:{{range .VisibleCategories}}{{if .Name}}
    {{.Name}}:{{range .VisibleCommands}}
@@ -71,10 +74,7 @@ OPTIONS:
    {{end}}{{end}}
 `
 
-var MarkdownDocTemplate = `% {{ .App.Name }}(8) {{ .App.Description }}
-{{ range $Author := .App.Authors}}
-% {{ $Author.Name }}
-{{- end}}
+var MarkdownDocTemplate = `% {{ .App.Name }} 8
 
 # NAME
 

vendor/golang.org/x/net/html/const.go

@@ -52,7 +52,6 @@ var isSpecialElementMap = map[string]bool{
 	"iframe":     true,
 	"img":        true,
 	"input":      true,
-	"isindex":    true, // The 'isindex' element has been removed, but keep it for backwards compatibility.
 	"keygen":     true,
 	"li":         true,
 	"link":       true,

vendor/golang.org/x/net/html/node.go

@@ -18,6 +18,11 @@ const (
 	ElementNode
 	CommentNode
 	DoctypeNode
+	// RawNode nodes are not returned by the parser, but can be part of the
+	// Node tree passed to func Render to insert raw HTML (without escaping).
+	// If so, this package makes no guarantee that the rendered HTML is secure
+	// (from e.g. Cross Site Scripting attacks) or well-formed.
+	RawNode
 	scopeMarkerNode
 )
 

vendor/golang.org/x/net/html/render.go

@@ -134,6 +134,9 @@ func render1(w writer, n *Node) error {
 			}
 		}
 		return w.WriteByte('>')
+	case RawNode:
+		_, err := w.WriteString(n.Data)
+		return err
 	default:
 		return errors.New("html: unknown node type")
 	}
@@ -252,20 +255,19 @@ func writeQuoted(w writer, s string) error {
 // Section 12.1.2, "Elements", gives this list of void elements. Void elements
 // are those that can't have any contents.
 var voidElements = map[string]bool{
-	"area":    true,
-	"base":    true,
-	"br":      true,
-	"col":     true,
-	"command": true,
-	"embed":   true,
-	"hr":      true,
-	"img":     true,
-	"input":   true,
-	"keygen":  true,
-	"link":    true,
-	"meta":    true,
-	"param":   true,
-	"source":  true,
-	"track":   true,
-	"wbr":     true,
+	"area":   true,
+	"base":   true,
+	"br":     true,
+	"col":    true,
+	"embed":  true,
+	"hr":     true,
+	"img":    true,
+	"input":  true,
+	"keygen": true,
+	"link":   true,
+	"meta":   true,
+	"param":  true,
+	"source": true,
+	"track":  true,
+	"wbr":    true,
 }

vendor/golang.org/x/net/html/token.go

@@ -296,8 +296,7 @@ func (z *Tokenizer) Buffered() []byte {
 // too many times in succession.
 func readAtLeastOneByte(r io.Reader, b []byte) (int, error) {
 	for i := 0; i < 100; i++ {
-		n, err := r.Read(b)
-		if n != 0 || err != nil {
+		if n, err := r.Read(b); n != 0 || err != nil {
 			return n, err
 		}
 	}

vendor/golang.org/x/net/http2/client_conn_pool.go

@@ -107,6 +107,7 @@ func (p *clientConnPool) getClientConn(req *http.Request, addr string, dialOnMis
 
 // dialCall is an in-flight Transport dial call to a host.
 type dialCall struct {
+	_    incomparable
 	p    *clientConnPool
 	done chan struct{} // closed when done
 	res  *ClientConn   // valid after done is closed
@@ -180,6 +181,7 @@ func (p *clientConnPool) addConnIfNeeded(key string, t *Transport, c *tls.Conn)
 }
 
 type addConnCall struct {
+	_    incomparable
 	p    *clientConnPool
 	done chan struct{} // closed when done
 	err  error
@@ -200,12 +202,6 @@ func (c *addConnCall) run(t *Transport, key string, tc *tls.Conn) {
 	close(c.done)
 }
 
-func (p *clientConnPool) addConn(key string, cc *ClientConn) {
-	p.mu.Lock()
-	p.addConnLocked(key, cc)
-	p.mu.Unlock()
-}
-
 // p.mu must be held
 func (p *clientConnPool) addConnLocked(key string, cc *ClientConn) {
 	for _, v := range p.conns[key] {

vendor/golang.org/x/net/http2/flow.go

@@ -8,6 +8,8 @@ package http2
 
 // flow is the flow control window's size.
 type flow struct {
+	_ incomparable
+
 	// n is the number of DATA bytes we're allowed to send.
 	// A flow is kept both on a conn and a per-stream.
 	n int32