vendor: containerd/console v1.0.1

full diff: https://github.com/containerd/consolve/compare/v1.0.0...v1.0.1

vendor golang.org/x/sys 2334cc1a136f0a5b4384f1a27e3634457be08553

full diff: ed371f2e16...2334cc1a13

- unix: add Darwin support for clonefile syscalls
- Adds openat2 for linux
  openat2 is a new syscall added to Linux 5.6. It provides a superset of
  openat(2) functionality, extending it with flags telling the kernel how
  to resolve the paths.

  For more info, see https://lwn.net/Articles/803237/

  NOTE that this is a second attempt to add the call; the previous one
  (https://golang.org/cl/227280) was reverted
  (https://golang.org/cl/227846) due to the test case failure on ARM
  (https://golang.org/issue/38357).

  This CL has the test case reworked to be less assumptive to the testing
  environment. In particular, it first tries if the most simplistic
  openat2() call succeeds, and skips the test otherwise. It is done that
  way because CI can be under under different kernels and in various
  envrionments -- in particular, Docker+seccomp can result in EPERM from a
  system call (which is not expected otherwise).

  For previous discussions about the test case, see
  https://golang.org/cl/227865.

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

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.