vendor: cadvisor v0.39.0

Main upgrades:
- github.com/opencontainers/runc v1.0.0-rc93
- github.com/containerd/containerd v1.4.4
- github.com/docker/docker v20.10.2
- github.com/mrunalp/fileutils v0.5.0
- github.com/opencontainers/selinux v1.8.0
- github.com/cilium/ebpf v0.2.0

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

@@ -0,0 +1,44 @@
+// Package mountinfo provides a set of functions to retrieve information about OS mounts.
+//
+// Currently it supports Linux. For historical reasons, there is also some support for FreeBSD and OpenBSD,
+// and a shallow implementation for Windows, but in general this is Linux-only package, so
+// the rest of the document only applies to Linux, unless explicitly specified otherwise.
+//
+// In Linux, information about mounts seen by the current process is available from
+// /proc/self/mountinfo. Note that due to mount namespaces, different processes can
+// see different mounts. A per-process mountinfo table is available from /proc/<PID>/mountinfo,
+// where <PID> is a numerical process identifier.
+//
+// In general, /proc is not a very efficient interface, and mountinfo is not an exception.
+// For example, there is no way to get information about a specific mount point (i.e. it
+// is all-or-nothing). This package tries to hide the /proc ineffectiveness by using
+// parse filters while reading mountinfo. A filter can skip some entries, or stop
+// processing the rest of the file once the needed information is found.
+//
+// For mountinfo filters that accept path as an argument, the path must be absolute,
+// having all symlinks resolved, and being cleaned (i.e. no extra slashes or dots).
+// One way to achieve all of the above is to employ filepath.Abs followed by
+// filepath.EvalSymlinks (the latter calls filepath.Clean on the result so
+// there is no need to explicitly call filepath.Clean).
+//
+// NOTE that in many cases there is no need to consult mountinfo at all. Here are some
+// of the cases where mountinfo should not be parsed:
+//
+// 1. Before performing a mount. Usually, this is not needed, but if required (say to
+// prevent over-mounts), to check whether a directory is mounted, call os.Lstat
+// on it and its parent directory, and compare their st.Sys().(*syscall.Stat_t).Dev
+// fields -- if they differ, then the directory is the mount point. NOTE this does
+// not work for bind mounts. Optionally, the filesystem type can also be checked
+// by calling unix.Statfs and checking the Type field (i.e. filesystem type).
+//
+// 2. After performing a mount. If there is no error returned, the mount succeeded;
+// checking the mount table for a new mount is redundant and expensive.
+//
+// 3. Before performing an unmount. It is more efficient to do an unmount and ignore
+// a specific error (EINVAL) which tells the directory is not mounted.
+//
+// 4. After performing an unmount. If there is no error returned, the unmount succeeded.
+//
+// 5. To find the mount point root of a specific directory. You can perform os.Stat()
+// on the directory and traverse up until the Dev field of a parent directory differs.
+package mountinfo

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

@@ -1,3 +1,5 @@
 module github.com/moby/sys/mountinfo
 
 go 1.14
+
+require golang.org/x/sys v0.0.0-20200909081042-eff7692f9009

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

@@ -0,0 +1,2 @@
+golang.org/x/sys v0.0.0-20200909081042-eff7692f9009 h1:W0lCpv29Hv0UaM1LXb9QlBHLNP8UFfcKjblhVCWftOM=
+golang.org/x/sys v0.0.0-20200909081042-eff7692f9009/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=

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

@@ -0,0 +1,58 @@
+package mountinfo
+
+import (
+	"os"
+	"path/filepath"
+
+	"golang.org/x/sys/unix"
+)
+
+// mountedByOpenat2 is a method of detecting a mount that works for all kinds
+// of mounts (incl. bind mounts), but requires a recent (v5.6+) linux kernel.
+func mountedByOpenat2(path string) (bool, error) {
+	dir, last := filepath.Split(path)
+
+	dirfd, err := unix.Openat2(unix.AT_FDCWD, dir, &unix.OpenHow{
+		Flags: unix.O_PATH | unix.O_CLOEXEC,
+	})
+	if err != nil {
+		if err == unix.ENOENT { // not a mount
+			return false, nil
+		}
+		return false, &os.PathError{Op: "openat2", Path: dir, Err: err}
+	}
+	fd, err := unix.Openat2(dirfd, last, &unix.OpenHow{
+		Flags:   unix.O_PATH | unix.O_CLOEXEC | unix.O_NOFOLLOW,
+		Resolve: unix.RESOLVE_NO_XDEV,
+	})
+	_ = unix.Close(dirfd)
+	switch err {
+	case nil: // definitely not a mount
+		_ = unix.Close(fd)
+		return false, nil
+	case unix.EXDEV: // definitely a mount
+		return true, nil
+	case unix.ENOENT: // not a mount
+		return false, nil
+	}
+	// not sure
+	return false, &os.PathError{Op: "openat2", Path: path, Err: err}
+}
+
+func mounted(path string) (bool, error) {
+	// Try a fast path, using openat2() with RESOLVE_NO_XDEV.
+	mounted, err := mountedByOpenat2(path)
+	if err == nil {
+		return mounted, nil
+	}
+	// Another fast path: compare st.st_dev fields.
+	mounted, err = mountedByStat(path)
+	// This does not work for bind mounts, so false negative
+	// is possible, therefore only trust if return is true.
+	if mounted && err == nil {
+		return mounted, nil
+	}
+
+	// Fallback to parsing mountinfo
+	return mountedByMountinfo(path)
+}

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

@@ -0,0 +1,66 @@
+// +build linux freebsd,cgo openbsd,cgo
+
+package mountinfo
+
+import (
+	"errors"
+	"fmt"
+	"os"
+	"path/filepath"
+
+	"golang.org/x/sys/unix"
+)
+
+func mountedByStat(path string) (bool, error) {
+	var st unix.Stat_t
+
+	if err := unix.Lstat(path, &st); err != nil {
+		if err == unix.ENOENT {
+			// Treat ENOENT as "not mounted".
+			return false, nil
+		}
+		return false, &os.PathError{Op: "stat", Path: path, Err: err}
+	}
+	dev := st.Dev
+	parent := filepath.Dir(path)
+	if err := unix.Lstat(parent, &st); err != nil {
+		return false, &os.PathError{Op: "stat", Path: parent, Err: err}
+	}
+	if dev != st.Dev {
+		// Device differs from that of parent,
+		// so definitely a mount point.
+		return true, nil
+	}
+	// NB: this does not detect bind mounts on Linux.
+	return false, nil
+}
+
+func normalizePath(path string) (realPath string, err error) {
+	if realPath, err = filepath.Abs(path); err != nil {
+		return "", fmt.Errorf("unable to get absolute path for %q: %w", path, err)
+	}
+	if realPath, err = filepath.EvalSymlinks(realPath); err != nil {
+		return "", fmt.Errorf("failed to canonicalise path for %q: %w", path, err)
+	}
+	if _, err := os.Stat(realPath); err != nil {
+		return "", fmt.Errorf("failed to stat target of %q: %w", path, err)
+	}
+	return realPath, nil
+}
+
+func mountedByMountinfo(path string) (bool, error) {
+	path, err := normalizePath(path)
+	if err != nil {
+		if errors.Is(err, unix.ENOENT) {
+			// treat ENOENT as "not mounted"
+			return false, nil
+		}
+		return false, err
+	}
+	entries, err := GetMounts(SingleEntryFilter(path))
+	if err != nil {
+		return false, err
+	}
+
+	return len(entries) > 0, nil
+}

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

@@ -1,6 +1,8 @@
 package mountinfo
 
-import "io"
+import (
+	"os"
+)
 
 // GetMounts retrieves a list of mounts for the current running process,
 // with an optional filter applied (use nil for no filter).
@@ -8,23 +10,17 @@ 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
+// Mounted determines if a specified path is a mount point.
+//
+// The argument must be an absolute path, with all symlinks resolved, and clean.
+// One way to ensure it is to process the path using filepath.Abs followed by
+// filepath.EvalSymlinks before calling this function.
+func Mounted(path string) (bool, error) {
+	// root is always mounted
+	if path == string(os.PathSeparator) {
+		return true, nil
 	}
-
-	return len(entries) > 0, nil
+	return mounted(path)
 }
 
 // Info reveals information about a particular mounted filesystem. This
@@ -50,18 +46,18 @@ type Info struct {
 	// Mountpoint indicates the mount point relative to the process's root.
 	Mountpoint string
 
-	// Opts represents mount-specific options.
-	Opts string
+	// Options represents mount-specific options.
+	Options string
 
 	// Optional represents optional fields.
 	Optional string
 
-	// Fstype indicates the type of filesystem, such as EXT3.
-	Fstype 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
+	// VFSOptions represents per super block options.
+	VFSOptions string
 }

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

@@ -1,3 +1,5 @@
+// +build freebsd,cgo openbsd,cgo
+
 package mountinfo
 
 /*
@@ -33,7 +35,7 @@ func parseMountTable(filter FilterFunc) ([]*Info, error) {
 		var mountinfo Info
 		var skip, stop bool
 		mountinfo.Mountpoint = C.GoString(&entry.f_mntonname[0])
-		mountinfo.Fstype = C.GoString(&entry.f_fstypename[0])
+		mountinfo.FSType = C.GoString(&entry.f_fstypename[0])
 		mountinfo.Source = C.GoString(&entry.f_mntfromname[0])
 
 		if filter != nil {
@@ -51,3 +53,15 @@ func parseMountTable(filter FilterFunc) ([]*Info, error) {
 	}
 	return out, nil
 }
+
+func mounted(path string) (bool, error) {
+	// Fast path: compare st.st_dev fields.
+	// This should always work for FreeBSD and OpenBSD.
+	mounted, err := mountedByStat(path)
+	if err == nil {
+		return mounted, nil
+	}
+
+	// Fallback to parsing mountinfo
+	return mountedByMountinfo(path)
+}

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

@@ -6,16 +6,16 @@ import "strings"
 // 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:
+// It takes a pointer to the Info struct (fully populated with all available
+// fields on the GOOS platform), and returns two booleans:
 //
-//  - skip: true if the entry should be skipped
-//  - stop: true if parsing should be stopped after the entry
+// 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
+// do not start with a specific prefix.
 func PrefixFilter(prefix string) FilterFunc {
 	return func(m *Info) (bool, bool) {
 		skip := !strings.HasPrefix(m.Mountpoint, prefix)
@@ -23,7 +23,7 @@ func PrefixFilter(prefix string) FilterFunc {
 	}
 }
 
-// SingleEntryFilter looks for a specific entry
+// SingleEntryFilter looks for a specific entry.
 func SingleEntryFilter(mp string) FilterFunc {
 	return func(m *Info) (bool, bool) {
 		if m.Mountpoint == mp {
@@ -36,8 +36,8 @@ func SingleEntryFilter(mp string) FilterFunc {
 // 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.
+// 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)
@@ -45,12 +45,12 @@ func ParentsFilter(path string) FilterFunc {
 	}
 }
 
-// FstypeFilter returns all entries that match provided fstype(s).
-func FstypeFilter(fstype ...string) FilterFunc {
+// 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
+			if m.FSType == t {
+				return false, false // don't skip, keep going
 			}
 		}
 		return true, false // skip, keep going

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

@@ -1,5 +1,3 @@
-// +build go1.13
-
 package mountinfo
 
 import (
@@ -11,14 +9,18 @@ import (
 	"strings"
 )
 
-func parseInfoFile(r io.Reader, filter FilterFunc) ([]*Info, error) {
+// 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.
+//
+// This function is Linux-specific.
+func GetMountsFromReader(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
-		}
+		var err error
+
 		/*
 		   See http://man7.org/linux/man-pages/man5/proc.5.html
 
@@ -70,26 +72,19 @@ func parseInfoFile(r io.Reader, filter FilterFunc) ([]*Info, error) {
 
 		p := &Info{}
 
-		// Fill in the fields that a filter might check
-		p.Mountpoint, err = strconv.Unquote(`"` + fields[4] + `"`)
+		p.Mountpoint, err = unescape(fields[4])
 		if err != nil {
-			return nil, fmt.Errorf("Parsing '%s' failed: unable to unquote mount point field: %w", fields[4], err)
+			return nil, fmt.Errorf("Parsing '%s' failed: mount point: %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
-			}
+		p.FSType, err = unescape(fields[sepIdx+1])
+		if err != nil {
+			return nil, fmt.Errorf("Parsing '%s' failed: fstype: %w", fields[sepIdx+1], err)
 		}
-
-		// Fill in the rest of the fields
+		p.Source, err = unescape(fields[sepIdx+2])
+		if err != nil {
+			return nil, fmt.Errorf("Parsing '%s' failed: source: %w", fields[sepIdx+2], err)
+		}
+		p.VFSOptions = fields[sepIdx+3]
 
 		// ignore any numbers parsing errors, as there should not be any
 		p.ID, _ = strconv.Atoi(fields[0])
@@ -101,12 +96,12 @@ func parseInfoFile(r io.Reader, filter FilterFunc) ([]*Info, error) {
 		p.Major, _ = strconv.Atoi(mm[0])
 		p.Minor, _ = strconv.Atoi(mm[1])
 
-		p.Root, err = strconv.Unquote(`"` + fields[3] + `"`)
+		p.Root, err = unescape(fields[3])
 		if err != nil {
-			return nil, fmt.Errorf("Parsing '%s' failed: unable to unquote root field: %w", fields[3], err)
+			return nil, fmt.Errorf("Parsing '%s' failed: root: %w", fields[3], err)
 		}
 
-		p.Opts = fields[5]
+		p.Options = fields[5]
 
 		// zero or more optional fields
 		switch {
@@ -118,11 +113,23 @@ func parseInfoFile(r io.Reader, filter FilterFunc) ([]*Info, error) {
 			p.Optional = strings.Join(fields[6:sepIdx-1], " ")
 		}
 
+		// Run the filter after parsing all of the fields.
+		var skip, stop bool
+		if filter != nil {
+			skip, stop = filter(p)
+			if skip {
+				continue
+			}
+		}
+
 		out = append(out, p)
 		if stop {
 			break
 		}
 	}
+	if err := s.Err(); err != nil {
+		return nil, err
+	}
 	return out, nil
 }
 
@@ -135,12 +142,17 @@ func parseMountTable(filter FilterFunc) ([]*Info, error) {
 	}
 	defer f.Close()
 
-	return parseInfoFile(f, filter)
+	return GetMountsFromReader(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.
+// PidMountInfo retrieves the list of mounts from a given process' mount
+// namespace. Unless there is a need to get mounts from a mount namespace
+// different from that of a calling process, use GetMounts.
+//
+// This function is Linux-specific.
+//
+// Deprecated: this will be removed before v1; use GetMountsFromReader with
+// opened /proc/<pid>/mountinfo as an argument instead.
 func PidMountInfo(pid int) ([]*Info, error) {
 	f, err := os.Open(fmt.Sprintf("/proc/%d/mountinfo", pid))
 	if err != nil {
@@ -148,5 +160,63 @@ func PidMountInfo(pid int) ([]*Info, error) {
 	}
 	defer f.Close()
 
-	return parseInfoFile(f, nil)
+	return GetMountsFromReader(f, nil)
+}
+
+// A few specific characters in mountinfo path entries (root and mountpoint)
+// are escaped using a backslash followed by a character's ascii code in octal.
+//
+//   space              -- as \040
+//   tab (aka \t)       -- as \011
+//   newline (aka \n)   -- as \012
+//   backslash (aka \\) -- as \134
+//
+// This function converts path from mountinfo back, i.e. it unescapes the above sequences.
+func unescape(path string) (string, error) {
+	// try to avoid copying
+	if strings.IndexByte(path, '\\') == -1 {
+		return path, nil
+	}
+
+	// The following code is UTF-8 transparent as it only looks for some
+	// specific characters (backslash and 0..7) with values < utf8.RuneSelf,
+	// and everything else is passed through as is.
+	buf := make([]byte, len(path))
+	bufLen := 0
+	for i := 0; i < len(path); i++ {
+		if path[i] != '\\' {
+			buf[bufLen] = path[i]
+			bufLen++
+			continue
+		}
+		s := path[i:]
+		if len(s) < 4 {
+			// too short
+			return "", fmt.Errorf("bad escape sequence %q: too short", s)
+		}
+		c := s[1]
+		switch c {
+		case '0', '1', '2', '3', '4', '5', '6', '7':
+			v := c - '0'
+			for j := 2; j < 4; j++ { // one digit already; two more
+				if s[j] < '0' || s[j] > '7' {
+					return "", fmt.Errorf("bad escape sequence %q: not a digit", s[:3])
+				}
+				x := s[j] - '0'
+				v = (v << 3) | x
+			}
+			if v > 255 {
+				return "", fmt.Errorf("bad escape sequence %q: out of range" + s[:3])
+			}
+			buf[bufLen] = v
+			bufLen++
+			i += 3
+			continue
+		default:
+			return "", fmt.Errorf("bad escape sequence %q: not a digit" + s[:3])
+
+		}
+	}
+
+	return string(buf[:bufLen]), nil
 }

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

@@ -1,17 +1,18 @@
-// +build !windows,!linux,!freebsd freebsd,!cgo
+// +build !windows,!linux,!freebsd,!openbsd freebsd,!cgo openbsd,!cgo
 
 package mountinfo
 
 import (
 	"fmt"
-	"io"
 	"runtime"
 )
 
+var errNotImplemented = fmt.Errorf("not implemented on %s/%s", runtime.GOOS, runtime.GOARCH)
+
 func parseMountTable(_ FilterFunc) ([]*Info, error) {
-	return nil, fmt.Errorf("mount.parseMountTable is not implemented on %s/%s", runtime.GOOS, runtime.GOARCH)
+	return nil, errNotImplemented
 }
 
-func parseInfoFile(_ io.Reader, f FilterFunc) ([]*Info, error) {
-	return parseMountTable(f)
+func mounted(path string) (bool, error) {
+	return false, errNotImplemented
 }

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

@@ -1,12 +1,10 @@
 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)
+func mounted(_ string) (bool, error) {
+	return false, nil
 }

vendor/github.com/moby/term/.gitignore

@@ -1,24 +1,8 @@
-# Docker project generated files to ignore
-#  if you want to ignore files created by your editor/tools,
-#  please consider a global .gitignore https://help.github.com/articles/ignoring-files
-*.exe
-*.exe~
-*.gz
-*.orig
-test.main
-.*.swp
-.DS_Store
-# a .bashrc may be added to customize the build environment
-.bashrc
-.editorconfig
-.gopath/
-.go-pkg-cache/
-.idea/
-autogen/
-bundles/
-cmd/dockerd/dockerd
-contrib/builder/rpm/*/changelog
-vendor/pkg/
-go-test-report.json
+# if you want to ignore files created by your editor/tools, consider using a
+# global .gitignore or .git/info/exclude see https://help.github.com/articles/ignoring-files
+.*
+!.github
+!.gitignore
 profile.out
-junit-report.xml
+# support running go modules in vendor mode for local development
+vendor/

vendor/github.com/moby/term/README.md

@@ -0,0 +1,36 @@
+# term - utilities for dealing with terminals
+
+![Test](https://github.com/moby/term/workflows/Test/badge.svg) [![GoDoc](https://godoc.org/github.com/moby/term?status.svg)](https://godoc.org/github.com/moby/term) [![Go Report Card](https://goreportcard.com/badge/github.com/moby/term)](https://goreportcard.com/report/github.com/moby/term)
+
+term provides structures and helper functions to work with terminal (state, sizes).
+
+#### Using term
+
+```go
+package main
+
+import (
+	"log"
+	"os"
+
+	"github.com/moby/term"
+)
+
+func main() {
+	fd := os.Stdin.Fd()
+	if term.IsTerminal(fd) {
+		ws, err := term.GetWinsize(fd)
+		if err != nil {
+			log.Fatalf("term.GetWinsize: %s", err)
+		}
+		log.Printf("%d:%d\n", ws.Height, ws.Width)
+	}
+}
+```
+
+## Contributing
+
+Want to hack on term? [Docker's contributions guidelines](https://github.com/docker/docker/blob/master/CONTRIBUTING.md) apply.
+
+## Copyright and license
+Code and documentation copyright 2015 Docker, inc. Code released under the Apache 2.0 license. Docs released under Creative commons.

vendor/github.com/moby/term/ascii.go

@@ -1,4 +1,4 @@
-package term // import "github.com/moby/term"
+package term
 
 import (
 	"fmt"

vendor/github.com/moby/term/go.mod

@@ -4,10 +4,9 @@ go 1.13
 
 require (
 	github.com/Azure/go-ansiterm v0.0.0-20170929234023-d6e3b3328b78
-	github.com/google/go-cmp v0.3.1
+	github.com/creack/pty v1.1.11
+	github.com/google/go-cmp v0.4.0
 	github.com/pkg/errors v0.9.1 // indirect
-	github.com/sirupsen/logrus v1.4.2
-	golang.org/x/sys v0.0.0-20200302150141-5c8b2ff67527
-	gotest.tools v2.2.0+incompatible
-	gotest.tools/v3 v3.0.2 // indirect
+	golang.org/x/sys v0.0.0-20200831180312-196b9ba8737a
+	gotest.tools/v3 v3.0.2
 )

vendor/github.com/moby/term/go.sum

@@ -1,33 +1,23 @@
 github.com/Azure/go-ansiterm v0.0.0-20170929234023-d6e3b3328b78 h1:w+iIsaOQNcT7OZ575w+acHgRric5iCyQh+xv+KJ4HB8=
 github.com/Azure/go-ansiterm v0.0.0-20170929234023-d6e3b3328b78/go.mod h1:LmzpDX56iTiv29bbRTIsUNlaFfuhWRQBWjQdVyAevI8=
-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/google/go-cmp v0.3.0 h1:crn/baboCvb5fXaQ0IJ1SGTsTVrWpDsCWC8EGETZijY=
+github.com/creack/pty v1.1.11 h1:07n33Z8lZxZ2qwegKbObQohDhXDQxiMMz1NOUGYlesw=
+github.com/creack/pty v1.1.11/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
 github.com/google/go-cmp v0.3.0/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
-github.com/google/go-cmp v0.3.1 h1:Xye71clBPdm5HgqGwUkwhbynsUJZhDbS20FvLhQ2izg=
-github.com/google/go-cmp v0.3.1/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
-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/google/go-cmp v0.4.0 h1:xsAVV57WRhGj6kEIi8ReJzQlHHqcBYCElAvkovg3B/4=
+github.com/google/go-cmp v0.4.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
 github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
-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/sirupsen/logrus v1.4.2 h1:SPIRibHv4MatM3XXNO2BJeFLZwZ2LvZgfQ5+UNI2im4=
-github.com/sirupsen/logrus v1.4.2/go.mod h1:tLMulIdttU9McNUspp0xgXVQah82FyeX6MwdIuYE2rE=
 github.com/spf13/pflag v1.0.3/go.mod h1:DYY7MBk1bdzusC3SYhjObp+wFpr4gzcvqqNjLnInEg4=
-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/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
 golang.org/x/net v0.0.0-20190311183353-d8887717615a/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
 golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
-golang.org/x/sys v0.0.0-20190422165155-953cdadca894/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20200302150141-5c8b2ff67527 h1:uYVVQ9WP/Ds2ROhcaGPeIdVq0RIXVLwsHlnvJ+cT1So=
-golang.org/x/sys v0.0.0-20200302150141-5c8b2ff67527/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20200831180312-196b9ba8737a h1:i47hUS795cOydZI4AwJQCKXOr4BvxzvikwDoDtHhP2Y=
+golang.org/x/sys v0.0.0-20200831180312-196b9ba8737a/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/tools v0.0.0-20190624222133-a101b041ded4/go.mod h1:/rFqwRUd4F7ZHNgwSSTFct+R/Kf4OFW1sUzUTQQTgfc=
-gotest.tools v2.2.0+incompatible h1:VsBPFP1AI068pPrMxtb/S8Zkgf9xEmTLJjfM+P5UIEo=
-gotest.tools v2.2.0+incompatible/go.mod h1:DsYFclhRJ6vuDpmuTbkuFWG+y2sxOXAzmJt81HFBacw=
+golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543 h1:E7g+9GITq07hpfrRu66IVDexMakfv52eLZ2CXBWiKr4=
+golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+gotest.tools/v3 v3.0.2 h1:kG1BFyqVHuQoVQiR1bWGnfz/fmHvvuiSPIV7rvl360E=
 gotest.tools/v3 v3.0.2/go.mod h1:3SzNCllyD9/Y+b5r9JIKQ474KzkZyqLqEfYqMsX94Bk=

vendor/github.com/moby/term/proxy.go

@@ -1,4 +1,4 @@
-package term // import "github.com/moby/term"
+package term
 
 import (
 	"io"
@@ -19,6 +19,7 @@ type escapeProxy struct {
 	escapeKeys   []byte
 	escapeKeyPos int
 	r            io.Reader
+	buf          []byte
 }
 
 // NewEscapeProxy returns a new TTY proxy reader which wraps the given reader
@@ -31,48 +32,57 @@ func NewEscapeProxy(r io.Reader, escapeKeys []byte) io.Reader {
 	}
 }
 
-func (r *escapeProxy) Read(buf []byte) (int, error) {
-	nr, err := r.r.Read(buf)
-
-	if len(r.escapeKeys) == 0 {
-		return nr, err
-	}
-
-	preserve := func() {
-		// this preserves the original key presses in the passed in buffer
-		nr += r.escapeKeyPos
-		preserve := make([]byte, 0, r.escapeKeyPos+len(buf))
-		preserve = append(preserve, r.escapeKeys[:r.escapeKeyPos]...)
-		preserve = append(preserve, buf...)
-		r.escapeKeyPos = 0
-		copy(buf[0:nr], preserve)
-	}
-
-	if nr != 1 || err != nil {
-		if r.escapeKeyPos > 0 {
-			preserve()
-		}
-		return nr, err
-	}
-
-	if buf[0] != r.escapeKeys[r.escapeKeyPos] {
-		if r.escapeKeyPos > 0 {
-			preserve()
-		}
-		return nr, nil
-	}
-
-	if r.escapeKeyPos == len(r.escapeKeys)-1 {
+func (r *escapeProxy) Read(buf []byte) (n int, err error) {
+	if len(r.escapeKeys) > 0 && r.escapeKeyPos == len(r.escapeKeys) {
 		return 0, EscapeError{}
 	}
 
-	// Looks like we've got an escape key, but we need to match again on the next
-	// read.
-	// Store the current escape key we found so we can look for the next one on
-	// the next read.
-	// Since this is an escape key, make sure we don't let the caller read it
-	// If later on we find that this is not the escape sequence, we'll add the
-	// keys back
-	r.escapeKeyPos++
-	return nr - r.escapeKeyPos, nil
+	if len(r.buf) > 0 {
+		n = copy(buf, r.buf)
+		r.buf = r.buf[n:]
+	}
+
+	nr, err := r.r.Read(buf[n:])
+	n += nr
+	if len(r.escapeKeys) == 0 {
+		return n, err
+	}
+
+	for i := 0; i < n; i++ {
+		if buf[i] == r.escapeKeys[r.escapeKeyPos] {
+			r.escapeKeyPos++
+
+			// Check if the full escape sequence is matched.
+			if r.escapeKeyPos == len(r.escapeKeys) {
+				n = i + 1 - r.escapeKeyPos
+				if n < 0 {
+					n = 0
+				}
+				return n, EscapeError{}
+			}
+			continue
+		}
+
+		// If we need to prepend a partial escape sequence from the previous
+		// read, make sure the new buffer size doesn't exceed len(buf).
+		// Otherwise, preserve any extra data in a buffer for the next read.
+		if i < r.escapeKeyPos {
+			preserve := make([]byte, 0, r.escapeKeyPos+n)
+			preserve = append(preserve, r.escapeKeys[:r.escapeKeyPos]...)
+			preserve = append(preserve, buf[:n]...)
+			n = copy(buf, preserve)
+			i += r.escapeKeyPos
+			r.buf = append(r.buf, preserve[n:]...)
+		}
+		r.escapeKeyPos = 0
+	}
+
+	// If we're in the middle of reading an escape sequence, make sure we don't
+	// let the caller read it. If later on we find that this is not the escape
+	// sequence, we'll prepend it back to buf.
+	n -= r.escapeKeyPos
+	if n < 0 {
+		n = 0
+	}
+	return n, err
 }

vendor/github.com/moby/term/tc.go

@@ -1,20 +1,19 @@
 // +build !windows
 
-package term // import "github.com/moby/term"
+package term
 
 import (
-	"syscall"
-	"unsafe"
-
 	"golang.org/x/sys/unix"
 )
 
-func tcget(fd uintptr, p *Termios) syscall.Errno {
-	_, _, err := unix.Syscall(unix.SYS_IOCTL, fd, uintptr(getTermios), uintptr(unsafe.Pointer(p)))
-	return err
+func tcget(fd uintptr) (*Termios, error) {
+	p, err := unix.IoctlGetTermios(int(fd), getTermios)
+	if err != nil {
+		return nil, err
+	}
+	return p, nil
 }
 
-func tcset(fd uintptr, p *Termios) syscall.Errno {
-	_, _, err := unix.Syscall(unix.SYS_IOCTL, fd, setTermios, uintptr(unsafe.Pointer(p)))
-	return err
+func tcset(fd uintptr, p *Termios) error {
+	return unix.IoctlSetTermios(int(fd), setTermios, p)
 }

vendor/github.com/moby/term/term.go

@@ -2,7 +2,7 @@
 
 // Package term provides structures and helper functions to work with
 // terminal (state, sizes).
-package term // import "github.com/moby/term"
+package term
 
 import (
 	"errors"
@@ -50,8 +50,8 @@ func GetFdInfo(in interface{}) (uintptr, bool) {
 
 // IsTerminal returns true if the given file descriptor is a terminal.
 func IsTerminal(fd uintptr) bool {
-	var termios Termios
-	return tcget(fd, &termios) == 0
+	_, err := tcget(fd)
+	return err == nil
 }
 
 // RestoreTerminal restores the terminal connected to the given file descriptor
@@ -60,20 +60,16 @@ func RestoreTerminal(fd uintptr, state *State) error {
 	if state == nil {
 		return ErrInvalidState
 	}
-	if err := tcset(fd, &state.termios); err != 0 {
-		return err
-	}
-	return nil
+	return tcset(fd, &state.termios)
 }
 
 // SaveState saves the state of the terminal connected to the given file descriptor.
 func SaveState(fd uintptr) (*State, error) {
-	var oldState State
-	if err := tcget(fd, &oldState.termios); err != 0 {
+	termios, err := tcget(fd)
+	if err != nil {
 		return nil, err
 	}
-
-	return &oldState, nil
+	return &State{termios: *termios}, nil
 }
 
 // DisableEcho applies the specified state to the terminal connected to the file
@@ -82,7 +78,7 @@ func DisableEcho(fd uintptr, state *State) error {
 	newState := state.termios
 	newState.Lflag &^= unix.ECHO
 
-	if err := tcset(fd, &newState); err != 0 {
+	if err := tcset(fd, &newState); err != nil {
 		return err
 	}
 	handleInterrupt(fd, state)

vendor/github.com/moby/term/term_windows.go

@@ -1,13 +1,12 @@
-package term // import "github.com/moby/term"
+package term
 
 import (
 	"io"
 	"os"
 	"os/signal"
-	"syscall" // used for STD_INPUT_HANDLE, STD_OUTPUT_HANDLE and STD_ERROR_HANDLE
 
-	"github.com/Azure/go-ansiterm/winterm"
 	windowsconsole "github.com/moby/term/windows"
+	"golang.org/x/sys/windows"
 )
 
 // State holds the console mode for the terminal.
@@ -28,37 +27,42 @@ var vtInputSupported bool
 func StdStreams() (stdIn io.ReadCloser, stdOut, stdErr io.Writer) {
 	// Turn on VT handling on all std handles, if possible. This might
 	// fail, in which case we will fall back to terminal emulation.
-	var emulateStdin, emulateStdout, emulateStderr bool
-	fd := os.Stdin.Fd()
-	if mode, err := winterm.GetConsoleMode(fd); err == nil {
+	var (
+		emulateStdin, emulateStdout, emulateStderr bool
+
+		mode uint32
+	)
+
+	fd := windows.Handle(os.Stdin.Fd())
+	if err := windows.GetConsoleMode(fd, &mode); err == nil {
 		// Validate that winterm.ENABLE_VIRTUAL_TERMINAL_INPUT is supported, but do not set it.
-		if err = winterm.SetConsoleMode(fd, mode|winterm.ENABLE_VIRTUAL_TERMINAL_INPUT); err != nil {
+		if err = windows.SetConsoleMode(fd, mode|windows.ENABLE_VIRTUAL_TERMINAL_INPUT); err != nil {
 			emulateStdin = true
 		} else {
 			vtInputSupported = true
 		}
 		// Unconditionally set the console mode back even on failure because SetConsoleMode
 		// remembers invalid bits on input handles.
-		winterm.SetConsoleMode(fd, mode)
+		_ = windows.SetConsoleMode(fd, mode)
 	}
 
-	fd = os.Stdout.Fd()
-	if mode, err := winterm.GetConsoleMode(fd); err == nil {
+	fd = windows.Handle(os.Stdout.Fd())
+	if err := windows.GetConsoleMode(fd, &mode); err == nil {
 		// Validate winterm.DISABLE_NEWLINE_AUTO_RETURN is supported, but do not set it.
-		if err = winterm.SetConsoleMode(fd, mode|winterm.ENABLE_VIRTUAL_TERMINAL_PROCESSING|winterm.DISABLE_NEWLINE_AUTO_RETURN); err != nil {
+		if err = windows.SetConsoleMode(fd, mode|windows.ENABLE_VIRTUAL_TERMINAL_PROCESSING|windows.DISABLE_NEWLINE_AUTO_RETURN); err != nil {
 			emulateStdout = true
 		} else {
-			winterm.SetConsoleMode(fd, mode|winterm.ENABLE_VIRTUAL_TERMINAL_PROCESSING)
+			_ = windows.SetConsoleMode(fd, mode|windows.ENABLE_VIRTUAL_TERMINAL_PROCESSING)
 		}
 	}
 
-	fd = os.Stderr.Fd()
-	if mode, err := winterm.GetConsoleMode(fd); err == nil {
+	fd = windows.Handle(os.Stderr.Fd())
+	if err := windows.GetConsoleMode(fd, &mode); err == nil {
 		// Validate winterm.DISABLE_NEWLINE_AUTO_RETURN is supported, but do not set it.
-		if err = winterm.SetConsoleMode(fd, mode|winterm.ENABLE_VIRTUAL_TERMINAL_PROCESSING|winterm.DISABLE_NEWLINE_AUTO_RETURN); err != nil {
+		if err = windows.SetConsoleMode(fd, mode|windows.ENABLE_VIRTUAL_TERMINAL_PROCESSING|windows.DISABLE_NEWLINE_AUTO_RETURN); err != nil {
 			emulateStderr = true
 		} else {
-			winterm.SetConsoleMode(fd, mode|winterm.ENABLE_VIRTUAL_TERMINAL_PROCESSING)
+			_ = windows.SetConsoleMode(fd, mode|windows.ENABLE_VIRTUAL_TERMINAL_PROCESSING)
 		}
 	}
 
@@ -67,19 +71,22 @@ func StdStreams() (stdIn io.ReadCloser, stdOut, stdErr io.Writer) {
 	// go-ansiterm hasn't switch to x/sys/windows.
 	// TODO: switch back to x/sys/windows once go-ansiterm has switched
 	if emulateStdin {
-		stdIn = windowsconsole.NewAnsiReader(syscall.STD_INPUT_HANDLE)
+		h := uint32(windows.STD_INPUT_HANDLE)
+		stdIn = windowsconsole.NewAnsiReader(int(h))
 	} else {
 		stdIn = os.Stdin
 	}
 
 	if emulateStdout {
-		stdOut = windowsconsole.NewAnsiWriter(syscall.STD_OUTPUT_HANDLE)
+		h := uint32(windows.STD_OUTPUT_HANDLE)
+		stdOut = windowsconsole.NewAnsiWriter(int(h))
 	} else {
 		stdOut = os.Stdout
 	}
 
 	if emulateStderr {
-		stdErr = windowsconsole.NewAnsiWriter(syscall.STD_ERROR_HANDLE)
+		h := uint32(windows.STD_ERROR_HANDLE)
+		stdErr = windowsconsole.NewAnsiWriter(int(h))
 	} else {
 		stdErr = os.Stderr
 	}
@@ -94,8 +101,8 @@ func GetFdInfo(in interface{}) (uintptr, bool) {
 
 // GetWinsize returns the window size based on the specified file descriptor.
 func GetWinsize(fd uintptr) (*Winsize, error) {
-	info, err := winterm.GetConsoleScreenBufferInfo(fd)
-	if err != nil {
+	var info windows.ConsoleScreenBufferInfo
+	if err := windows.GetConsoleScreenBufferInfo(windows.Handle(fd), &info); err != nil {
 		return nil, err
 	}
 
@@ -109,20 +116,23 @@ func GetWinsize(fd uintptr) (*Winsize, error) {
 
 // IsTerminal returns true if the given file descriptor is a terminal.
 func IsTerminal(fd uintptr) bool {
-	return windowsconsole.IsConsole(fd)
+	var mode uint32
+	err := windows.GetConsoleMode(windows.Handle(fd), &mode)
+	return err == nil
 }
 
 // RestoreTerminal restores the terminal connected to the given file descriptor
 // to a previous state.
 func RestoreTerminal(fd uintptr, state *State) error {
-	return winterm.SetConsoleMode(fd, state.mode)
+	return windows.SetConsoleMode(windows.Handle(fd), state.mode)
 }
 
 // SaveState saves the state of the terminal connected to the given file descriptor.
 func SaveState(fd uintptr) (*State, error) {
-	mode, e := winterm.GetConsoleMode(fd)
-	if e != nil {
-		return nil, e
+	var mode uint32
+
+	if err := windows.GetConsoleMode(windows.Handle(fd), &mode); err != nil {
+		return nil, err
 	}
 
 	return &State{mode: mode}, nil
@@ -132,9 +142,9 @@ func SaveState(fd uintptr) (*State, error) {
 // -- See https://msdn.microsoft.com/en-us/library/windows/desktop/ms683462(v=vs.85).aspx
 func DisableEcho(fd uintptr, state *State) error {
 	mode := state.mode
-	mode &^= winterm.ENABLE_ECHO_INPUT
-	mode |= winterm.ENABLE_PROCESSED_INPUT | winterm.ENABLE_LINE_INPUT
-	err := winterm.SetConsoleMode(fd, mode)
+	mode &^= windows.ENABLE_ECHO_INPUT
+	mode |= windows.ENABLE_PROCESSED_INPUT | windows.ENABLE_LINE_INPUT
+	err := windows.SetConsoleMode(windows.Handle(fd), mode)
 	if err != nil {
 		return err
 	}
@@ -169,7 +179,7 @@ func SetRawTerminalOutput(fd uintptr) (*State, error) {
 
 	// Ignore failures, since winterm.DISABLE_NEWLINE_AUTO_RETURN might not be supported on this
 	// version of Windows.
-	winterm.SetConsoleMode(fd, state.mode|winterm.DISABLE_NEWLINE_AUTO_RETURN)
+	_ = windows.SetConsoleMode(windows.Handle(fd), state.mode|windows.DISABLE_NEWLINE_AUTO_RETURN)
 	return state, err
 }
 
@@ -188,21 +198,21 @@ func MakeRaw(fd uintptr) (*State, error) {
 	// -- https://msdn.microsoft.com/en-us/library/windows/desktop/ms683462(v=vs.85).aspx
 
 	// Disable these modes
-	mode &^= winterm.ENABLE_ECHO_INPUT
-	mode &^= winterm.ENABLE_LINE_INPUT
-	mode &^= winterm.ENABLE_MOUSE_INPUT
-	mode &^= winterm.ENABLE_WINDOW_INPUT
-	mode &^= winterm.ENABLE_PROCESSED_INPUT
+	mode &^= windows.ENABLE_ECHO_INPUT
+	mode &^= windows.ENABLE_LINE_INPUT
+	mode &^= windows.ENABLE_MOUSE_INPUT
+	mode &^= windows.ENABLE_WINDOW_INPUT
+	mode &^= windows.ENABLE_PROCESSED_INPUT
 
 	// Enable these modes
-	mode |= winterm.ENABLE_EXTENDED_FLAGS
-	mode |= winterm.ENABLE_INSERT_MODE
-	mode |= winterm.ENABLE_QUICK_EDIT_MODE
+	mode |= windows.ENABLE_EXTENDED_FLAGS
+	mode |= windows.ENABLE_INSERT_MODE
+	mode |= windows.ENABLE_QUICK_EDIT_MODE
 	if vtInputSupported {
-		mode |= winterm.ENABLE_VIRTUAL_TERMINAL_INPUT
+		mode |= windows.ENABLE_VIRTUAL_TERMINAL_INPUT
 	}
 
-	err = winterm.SetConsoleMode(fd, mode)
+	err = windows.SetConsoleMode(windows.Handle(fd), mode)
 	if err != nil {
 		return nil, err
 	}
@@ -215,7 +225,7 @@ func restoreAtInterrupt(fd uintptr, state *State) {
 
 	go func() {
 		_ = <-sigchan
-		RestoreTerminal(fd, state)
+		_ = RestoreTerminal(fd, state)
 		os.Exit(0)
 	}()
 }

vendor/github.com/moby/term/termios.go

@@ -1,28 +1,24 @@
-package term // import "github.com/moby/term"
+// +build !windows
+
+package term
 
 import (
 	"golang.org/x/sys/unix"
 )
 
-const (
-	getTermios = unix.TCGETS
-	setTermios = unix.TCSETS
-)
-
 // Termios is the Unix API for terminal I/O.
-type Termios unix.Termios
+type Termios = unix.Termios
 
-// MakeRaw put the terminal connected to the given file descriptor into raw
+// MakeRaw puts the terminal connected to the given file descriptor into raw
 // mode and returns the previous state of the terminal so that it can be
 // restored.
 func MakeRaw(fd uintptr) (*State, error) {
-	termios, err := unix.IoctlGetTermios(int(fd), getTermios)
+	termios, err := tcget(fd)
 	if err != nil {
 		return nil, err
 	}
 
-	var oldState State
-	oldState.termios = Termios(*termios)
+	oldState := State{termios: *termios}
 
 	termios.Iflag &^= (unix.IGNBRK | unix.BRKINT | unix.PARMRK | unix.ISTRIP | unix.INLCR | unix.IGNCR | unix.ICRNL | unix.IXON)
 	termios.Oflag &^= unix.OPOST
@@ -32,7 +28,7 @@ func MakeRaw(fd uintptr) (*State, error) {
 	termios.Cc[unix.VMIN] = 1
 	termios.Cc[unix.VTIME] = 0
 
-	if err := unix.IoctlSetTermios(int(fd), setTermios, termios); err != nil {
+	if err := tcset(fd, termios); err != nil {
 		return nil, err
 	}
 	return &oldState, nil

vendor/github.com/moby/term/termios_bsd.go

@@ -1,10 +1,8 @@
 // +build darwin freebsd openbsd netbsd
 
-package term // import "github.com/moby/term"
+package term
 
 import (
-	"unsafe"
-
 	"golang.org/x/sys/unix"
 )
 
@@ -12,31 +10,3 @@ const (
 	getTermios = unix.TIOCGETA
 	setTermios = unix.TIOCSETA
 )
-
-// Termios is the Unix API for terminal I/O.
-type Termios unix.Termios
-
-// MakeRaw put the terminal connected to the given file descriptor into raw
-// mode and returns the previous state of the terminal so that it can be
-// restored.
-func MakeRaw(fd uintptr) (*State, error) {
-	var oldState State
-	if _, _, err := unix.Syscall(unix.SYS_IOCTL, fd, getTermios, uintptr(unsafe.Pointer(&oldState.termios))); err != 0 {
-		return nil, err
-	}
-
-	newState := oldState.termios
-	newState.Iflag &^= (unix.IGNBRK | unix.BRKINT | unix.PARMRK | unix.ISTRIP | unix.INLCR | unix.IGNCR | unix.ICRNL | unix.IXON)
-	newState.Oflag &^= unix.OPOST
-	newState.Lflag &^= (unix.ECHO | unix.ECHONL | unix.ICANON | unix.ISIG | unix.IEXTEN)
-	newState.Cflag &^= (unix.CSIZE | unix.PARENB)
-	newState.Cflag |= unix.CS8
-	newState.Cc[unix.VMIN] = 1
-	newState.Cc[unix.VTIME] = 0
-
-	if _, _, err := unix.Syscall(unix.SYS_IOCTL, fd, setTermios, uintptr(unsafe.Pointer(&newState))); err != 0 {
-		return nil, err
-	}
-
-	return &oldState, nil
-}

vendor/github.com/moby/term/termios_nonbsd.go

@@ -0,0 +1,12 @@
+//+build !darwin,!freebsd,!netbsd,!openbsd,!windows
+
+package term
+
+import (
+	"golang.org/x/sys/unix"
+)
+
+const (
+	getTermios = unix.TCGETS
+	setTermios = unix.TCSETS
+)

vendor/github.com/moby/term/windows/ansi_reader.go

@@ -1,6 +1,6 @@
 // +build windows
 
-package windowsconsole // import "github.com/moby/term/windows"
+package windowsconsole
 
 import (
 	"bytes"
@@ -31,7 +31,6 @@ type ansiReader struct {
 // NewAnsiReader returns an io.ReadCloser that provides VT100 terminal emulation on top of a
 // Windows console input handle.
 func NewAnsiReader(nFile int) io.ReadCloser {
-	initLogger()
 	file, fd := winterm.GetStdFile(nFile)
 	return &ansiReader{
 		file:    file,
@@ -59,8 +58,6 @@ func (ar *ansiReader) Read(p []byte) (int, error) {
 
 	// Previously read bytes exist, read as much as we can and return
 	if len(ar.buffer) > 0 {
-		logger.Debugf("Reading previously cached bytes")
-
 		originalLength := len(ar.buffer)
 		copiedLength := copy(p, ar.buffer)
 
@@ -70,16 +67,14 @@ func (ar *ansiReader) Read(p []byte) (int, error) {
 			ar.buffer = ar.buffer[copiedLength:]
 		}
 
-		logger.Debugf("Read from cache p[%d]: % x", copiedLength, p)
 		return copiedLength, nil
 	}
 
 	// Read and translate key events
-	events, err := readInputEvents(ar.fd, len(p))
+	events, err := readInputEvents(ar, len(p))
 	if err != nil {
 		return 0, err
 	} else if len(events) == 0 {
-		logger.Debug("No input events detected")
 		return 0, nil
 	}
 
@@ -87,11 +82,9 @@ func (ar *ansiReader) Read(p []byte) (int, error) {
 
 	// Save excess bytes and right-size keyBytes
 	if len(keyBytes) > len(p) {
-		logger.Debugf("Received %d keyBytes, only room for %d bytes", len(keyBytes), len(p))
 		ar.buffer = keyBytes[len(p):]
 		keyBytes = keyBytes[:len(p)]
 	} else if len(keyBytes) == 0 {
-		logger.Debug("No key bytes returned from the translator")
 		return 0, nil
 	}
 
@@ -100,13 +93,11 @@ func (ar *ansiReader) Read(p []byte) (int, error) {
 		return 0, errors.New("unexpected copy length encountered")
 	}
 
-	logger.Debugf("Read        p[%d]: % x", copiedLength, p)
-	logger.Debugf("Read keyBytes[%d]: % x", copiedLength, keyBytes)
 	return copiedLength, nil
 }
 
 // readInputEvents polls until at least one event is available.
-func readInputEvents(fd uintptr, maxBytes int) ([]winterm.INPUT_RECORD, error) {
+func readInputEvents(ar *ansiReader, maxBytes int) ([]winterm.INPUT_RECORD, error) {
 	// Determine the maximum number of records to retrieve
 	// -- Cast around the type system to obtain the size of a single INPUT_RECORD.
 	//    unsafe.Sizeof requires an expression vs. a type-reference; the casting
@@ -118,25 +109,23 @@ func readInputEvents(fd uintptr, maxBytes int) ([]winterm.INPUT_RECORD, error) {
 	} else if countRecords == 0 {
 		countRecords = 1
 	}
-	logger.Debugf("[windows] readInputEvents: Reading %v records (buffer size %v, record size %v)", countRecords, maxBytes, recordSize)
 
 	// Wait for and read input events
 	events := make([]winterm.INPUT_RECORD, countRecords)
 	nEvents := uint32(0)
-	eventsExist, err := winterm.WaitForSingleObject(fd, winterm.WAIT_INFINITE)
+	eventsExist, err := winterm.WaitForSingleObject(ar.fd, winterm.WAIT_INFINITE)
 	if err != nil {
 		return nil, err
 	}
 
 	if eventsExist {
-		err = winterm.ReadConsoleInput(fd, events, &nEvents)
+		err = winterm.ReadConsoleInput(ar.fd, events, &nEvents)
 		if err != nil {
 			return nil, err
 		}
 	}
 
 	// Return a slice restricted to the number of returned records
-	logger.Debugf("[windows] readInputEvents: Read %v events", nEvents)
 	return events[:nEvents], nil
 }
 

vendor/github.com/moby/term/windows/ansi_writer.go

@@ -1,6 +1,6 @@
 // +build windows
 
-package windowsconsole // import "github.com/moby/term/windows"
+package windowsconsole
 
 import (
 	"io"
@@ -24,7 +24,6 @@ type ansiWriter struct {
 // NewAnsiWriter returns an io.Writer that provides VT100 terminal emulation on top of a
 // Windows console output handle.
 func NewAnsiWriter(nFile int) io.Writer {
-	initLogger()
 	file, fd := winterm.GetStdFile(nFile)
 	info, err := winterm.GetConsoleScreenBufferInfo(fd)
 	if err != nil {
@@ -32,9 +31,8 @@ func NewAnsiWriter(nFile int) io.Writer {
 	}
 
 	parser := ansiterm.CreateParser("Ground", winterm.CreateWinEventHandler(fd, file))
-	logger.Infof("newAnsiWriter: parser %p", parser)
 
-	aw := &ansiWriter{
+	return &ansiWriter{
 		file:           file,
 		fd:             fd,
 		infoReset:      info,
@@ -42,10 +40,6 @@ func NewAnsiWriter(nFile int) io.Writer {
 		escapeSequence: []byte(ansiterm.KEY_ESC_CSI),
 		parser:         parser,
 	}
-
-	logger.Infof("newAnsiWriter: aw.parser %p", aw.parser)
-	logger.Infof("newAnsiWriter: %v", aw)
-	return aw
 }
 
 func (aw *ansiWriter) Fd() uintptr {
@@ -58,7 +52,5 @@ func (aw *ansiWriter) Write(p []byte) (total int, err error) {
 		return 0, nil
 	}
 
-	logger.Infof("Write: % x", p)
-	logger.Infof("Write: %s", string(p))
 	return aw.parser.Parse(p)
 }

vendor/github.com/moby/term/windows/console.go

@@ -1,11 +1,11 @@
 // +build windows
 
-package windowsconsole // import "github.com/moby/term/windows"
+package windowsconsole
 
 import (
 	"os"
 
-	"github.com/Azure/go-ansiterm/winterm"
+	"golang.org/x/sys/windows"
 )
 
 // GetHandleInfo returns file descriptor and bool indicating whether the file is a console.
@@ -22,14 +22,18 @@ func GetHandleInfo(in interface{}) (uintptr, bool) {
 
 	if file, ok := in.(*os.File); ok {
 		inFd = file.Fd()
-		isTerminal = IsConsole(inFd)
+		isTerminal = isConsole(inFd)
 	}
 	return inFd, isTerminal
 }
 
 // IsConsole returns true if the given file descriptor is a Windows Console.
 // The code assumes that GetConsoleMode will return an error for file descriptors that are not a console.
-func IsConsole(fd uintptr) bool {
-	_, e := winterm.GetConsoleMode(fd)
-	return e == nil
+// Deprecated: use golang.org/x/sys/windows.GetConsoleMode() or golang.org/x/term.IsTerminal()
+var IsConsole = isConsole
+
+func isConsole(fd uintptr) bool {
+	var mode uint32
+	err := windows.GetConsoleMode(windows.Handle(fd), &mode)
+	return err == nil
 }

vendor/github.com/moby/term/windows/doc.go

@@ -0,0 +1,5 @@
+// These files implement ANSI-aware input and output streams for use by the Docker Windows client.
+// When asked for the set of standard streams (e.g., stdin, stdout, stderr), the code will create
+// and return pseudo-streams that convert ANSI sequences to / from Windows Console API calls.
+
+package windowsconsole

vendor/github.com/moby/term/windows/windows.go

@@ -1,34 +0,0 @@
-// +build windows
-// These files implement ANSI-aware input and output streams for use by the Docker Windows client.
-// When asked for the set of standard streams (e.g., stdin, stdout, stderr), the code will create
-// and return pseudo-streams that convert ANSI sequences to / from Windows Console API calls.
-
-package windowsconsole // import "github.com/moby/term/windows"
-
-import (
-	"io/ioutil"
-	"os"
-	"sync"
-
-	ansiterm "github.com/Azure/go-ansiterm"
-	"github.com/sirupsen/logrus"
-)
-
-var logger *logrus.Logger
-var initOnce sync.Once
-
-func initLogger() {
-	initOnce.Do(func() {
-		logFile := ioutil.Discard
-
-		if isDebugEnv := os.Getenv(ansiterm.LogEnv); isDebugEnv == "1" {
-			logFile, _ = os.Create("ansiReaderWriter.log")
-		}
-
-		logger = &logrus.Logger{
-			Out:       logFile,
-			Formatter: new(logrus.TextFormatter),
-			Level:     logrus.DebugLevel,
-		}
-	})
-}

vendor/github.com/moby/term/winsize.go

@@ -1,6 +1,6 @@
 // +build !windows
 
-package term // import "github.com/moby/term"
+package term
 
 import (
 	"golang.org/x/sys/unix"