Merge pull request #41572 from thaJeztah/containerd_console

vendor: github.com/containerd/console v1.0.1

vendor.conf

@@ -127,7 +127,7 @@ github.com/containerd/containerd                    c623d1b36f09f8ef6536a057bd65
 github.com/containerd/fifo                          f15a3290365b9d2627d189e619ab4008e0069caf
 github.com/containerd/continuity                    efbc4488d8fe1bdc16bde3b2d2990d9b3a899165
 github.com/containerd/cgroups                       318312a373405e5e91134d8063d04d59768a1bff
-github.com/containerd/console                       8375c3424e4d7b114e8a90a4a40c8e1b40d1d4e6 # v1.0.0
+github.com/containerd/console                       5d7e1412f07b502a01029ea20e20e0d2be31fa7c # v1.0.1
 github.com/containerd/go-runc                       7016d3ce2328dd2cb1192b2076ebd565c4e8df0c
 github.com/containerd/typeurl                       cd3ce7159eae562a4f60ceff37dada11a939d247 # v1.0.1
 github.com/containerd/ttrpc                         72bb1b21c5b0a4a107f59dd85f6ab58e564b68d6 # v1.0.1

vendor/github.com/containerd/console/console.go

@@ -61,18 +61,24 @@ type WinSize struct {
 	y     uint16
 }
 
-// Current returns the current processes console
-func Current() Console {
-	c, err := ConsoleFromFile(os.Stdin)
-	if err != nil {
-		// stdin should always be a console for the design
-		// of this function
-		panic(err)
+// Current returns the current process' console
+func Current() (c Console) {
+	var err error
+	// Usually all three streams (stdin, stdout, and stderr)
+	// are open to the same console, but some might be redirected,
+	// so try all three.
+	for _, s := range []*os.File{os.Stderr, os.Stdout, os.Stdin} {
+		if c, err = ConsoleFromFile(s); err == nil {
+			return c
+		}
 	}
-	return c
+	// One of the std streams should always be a console
+	// for the design of this function.
+	panic(err)
 }
 
 // ConsoleFromFile returns a console using the provided file
+// nolint:golint
 func ConsoleFromFile(f File) (Console, error) {
 	if err := checkConsole(f); err != nil {
 		return nil, err

vendor/github.com/containerd/console/console_unix.go

@@ -1,4 +1,4 @@
-// +build darwin freebsd linux openbsd solaris
+// +build darwin freebsd linux netbsd openbsd solaris
 
 /*
    Copyright The containerd Authors.

vendor/github.com/containerd/console/go.mod

@@ -3,6 +3,6 @@ module github.com/containerd/console
 go 1.13
 
 require (
-	github.com/pkg/errors v0.8.1
-	golang.org/x/sys v0.0.0-20191120155948-bd437916bb0e
+	github.com/pkg/errors v0.9.1
+	golang.org/x/sys v0.0.0-20200916030750-2334cc1a136f
 )

vendor/github.com/containerd/console/tc_darwin.go

@@ -19,7 +19,6 @@ package console
 import (
 	"fmt"
 	"os"
-	"unsafe"
 
 	"golang.org/x/sys/unix"
 )
@@ -29,18 +28,10 @@ const (
 	cmdTcSet = unix.TIOCSETA
 )
 
-func ioctl(fd, flag, data uintptr) error {
-	if _, _, err := unix.Syscall(unix.SYS_IOCTL, fd, flag, data); err != 0 {
-		return err
-	}
-	return nil
-}
-
 // unlockpt unlocks the slave pseudoterminal device corresponding to the master pseudoterminal referred to by f.
 // unlockpt should be called before opening the slave side of a pty.
 func unlockpt(f *os.File) error {
-	var u int32
-	return ioctl(f.Fd(), unix.TIOCPTYUNLK, uintptr(unsafe.Pointer(&u)))
+	return unix.IoctlSetPointerInt(int(f.Fd()), unix.TIOCPTYUNLK, 0)
 }
 
 // ptsname retrieves the name of the first available pts for the given master.

vendor/github.com/containerd/console/tc_linux.go

@@ -19,7 +19,6 @@ package console
 import (
 	"fmt"
 	"os"
-	"unsafe"
 
 	"golang.org/x/sys/unix"
 )
@@ -32,17 +31,13 @@ const (
 // unlockpt unlocks the slave pseudoterminal device corresponding to the master pseudoterminal referred to by f.
 // unlockpt should be called before opening the slave side of a pty.
 func unlockpt(f *os.File) error {
-	var u int32
-	if _, _, err := unix.Syscall(unix.SYS_IOCTL, f.Fd(), unix.TIOCSPTLCK, uintptr(unsafe.Pointer(&u))); err != 0 {
-		return err
-	}
-	return nil
+	return unix.IoctlSetPointerInt(int(f.Fd()), unix.TIOCSPTLCK, 0)
 }
 
 // ptsname retrieves the name of the first available pts for the given master.
 func ptsname(f *os.File) (string, error) {
-	var u uint32
-	if _, _, err := unix.Syscall(unix.SYS_IOCTL, f.Fd(), unix.TIOCGPTN, uintptr(unsafe.Pointer(&u))); err != 0 {
+	u, err := unix.IoctlGetInt(int(f.Fd()), unix.TIOCGPTN)
+	if err != nil {
 		return "", err
 	}
 	return fmt.Sprintf("/dev/pts/%d", u), nil

vendor/github.com/containerd/console/tc_netbsd.go

@@ -0,0 +1,45 @@
+/*
+   Copyright The containerd Authors.
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+*/
+
+package console
+
+import (
+	"bytes"
+	"os"
+
+	"golang.org/x/sys/unix"
+)
+
+const (
+	cmdTcGet = unix.TIOCGETA
+	cmdTcSet = unix.TIOCSETA
+)
+
+// unlockpt unlocks the slave pseudoterminal device corresponding to the master pseudoterminal referred to by f.
+// unlockpt should be called before opening the slave side of a pty.
+// This does not exist on NetBSD, it does not allocate controlling terminals on open
+func unlockpt(f *os.File) error {
+	return nil
+}
+
+// ptsname retrieves the name of the first available pts for the given master.
+func ptsname(f *os.File) (string, error) {
+	ptm, err := unix.IoctlGetPtmget(int(f.Fd()), unix.TIOCPTSNAME)
+	if err != nil {
+		return "", err
+	}
+	return string(ptm.Sn[:bytes.IndexByte(ptm.Sn[:], 0)]), nil
+}

vendor/github.com/containerd/console/tc_unix.go

@@ -1,4 +1,4 @@
-// +build darwin freebsd linux openbsd solaris
+// +build darwin freebsd linux netbsd openbsd solaris
 
 /*
    Copyright The containerd Authors.