vendor psgo v1.2

The psgo library now be used concurrently by multiple goroutines without
interferring with another.

Signed-off-by: Valentin Rothberg <rothberg@redhat.com>

vendor/github.com/containers/psgo/internal/dev/tty.go

@@ -31,12 +31,9 @@ type TTY struct {
 	Path string
 }
 
-// cache TTYs to avoid redundant lookups
-var devices *[]TTY
-
 // FindTTY return the corresponding TTY to the ttyNr or nil of non could be
 // found.
-func FindTTY(ttyNr uint64) (*TTY, error) {
+func FindTTY(ttyNr uint64, devices *[]TTY) (*TTY, error) {
 	// (man 5 proc) The minor device number is contained in the combination
 	// of bits 31 to 20 and 7 to 0; the major device number is in bits 15
 	// to 8.
@@ -44,7 +41,7 @@ func FindTTY(ttyNr uint64) (*TTY, error) {
 	min := (ttyNr & 0xFF) | ((ttyNr >> 20) & 0xFFF)
 
 	if devices == nil {
-		devs, err := getTTYs()
+		devs, err := TTYs()
 		if err != nil {
 			return nil, err
 		}
@@ -70,8 +67,8 @@ func minDevNum(rdev uint64) uint64 {
 	return (rdev & 0xff) | ((rdev >> 12) & 0xfff00)
 }
 
-// getTTYs parses /dev for tty and pts devices.
-func getTTYs() (*[]TTY, error) {
+// TTYs parses /dev for tty and pts devices.
+func TTYs() (*[]TTY, error) {
 	devDir, err := os.Open("/dev/")
 	if err != nil {
 		return nil, err

vendor/github.com/containers/psgo/internal/proc/status.go

@@ -21,7 +21,6 @@ import (
 	"os/exec"
 	"strings"
 
-	"github.com/containers/psgo/internal/types"
 	"github.com/pkg/errors"
 )
 
@@ -207,11 +206,11 @@ func readStatusDefault(pid string) ([]string, error) {
 }
 
 // ParseStatus parses the /proc/$pid/status file and returns a *Status.
-func ParseStatus(ctx *types.PsContext, pid string) (*Status, error) {
+func ParseStatus(pid string, joinUserNS bool) (*Status, error) {
 	var lines []string
 	var err error
 
-	if ctx.JoinUserNS {
+	if joinUserNS {
 		lines, err = readStatusUserNS(pid)
 	} else {
 		lines, err = readStatusDefault(pid)

vendor/github.com/containers/psgo/internal/process/process.go

@@ -21,7 +21,6 @@ import (
 
 	"github.com/containers/psgo/internal/host"
 	"github.com/containers/psgo/internal/proc"
-	"github.com/containers/psgo/internal/types"
 	"github.com/opencontainers/runc/libcontainer/user"
 	"github.com/pkg/errors"
 )
@@ -76,13 +75,13 @@ func LookupUID(uid string) (string, error) {
 
 // New returns a new Process with the specified pid and parses the relevant
 // data from /proc and /dev.
-func New(ctx *types.PsContext, pid string) (*Process, error) {
+func New(pid string, joinUserNS bool) (*Process, error) {
 	p := Process{Pid: pid}
 
 	if err := p.parseStat(); err != nil {
 		return nil, err
 	}
-	if err := p.parseStatus(ctx); err != nil {
+	if err := p.parseStatus(joinUserNS); err != nil {
 		return nil, err
 	}
 	if err := p.parseCmdLine(); err != nil {
@@ -103,10 +102,10 @@ func New(ctx *types.PsContext, pid string) (*Process, error) {
 }
 
 // FromPIDs creates a new Process for each pid.
-func FromPIDs(ctx *types.PsContext, pids []string) ([]*Process, error) {
+func FromPIDs(pids []string, joinUserNS bool) ([]*Process, error) {
 	processes := []*Process{}
 	for _, pid := range pids {
-		p, err := New(ctx, pid)
+		p, err := New(pid, joinUserNS)
 		if err != nil {
 			if os.IsNotExist(errors.Cause(err)) {
 				// proc parsing is racy
@@ -131,8 +130,8 @@ func (p *Process) parseStat() error {
 }
 
 // parseStatus parses /proc/$pid/status.
-func (p *Process) parseStatus(ctx *types.PsContext) error {
-	s, err := proc.ParseStatus(ctx, p.Pid)
+func (p *Process) parseStatus(joinUserNS bool) error {
+	s, err := proc.ParseStatus(p.Pid, joinUserNS)
 	if err != nil {
 		return err
 	}

vendor/github.com/containers/psgo/internal/types/types.go

@@ -1,22 +0,0 @@
-// Copyright 2018 psgo 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 types
-
-// PsContext controls some internals of the psgo library.
-type PsContext struct {
-	// JoinUserNS will force /proc and /dev parsing from within each PIDs
-	// user namespace.
-	JoinUserNS bool
-}