Adding upstream version 2.52.6.
Signed-off-by: Daniel Baumann <daniel@debian.org>
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a960158181
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GPG key ID:
FBB4F0E80A80222F
441 changed files with 95392 additions and 0 deletions
379
internal/gopsutil/common/common.go
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379
internal/gopsutil/common/common.go
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@ -0,0 +1,379 @@
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package common
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//
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// gopsutil is a port of psutil(http://pythonhosted.org/psutil/).
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// This covers these architectures.
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// - linux (amd64, arm)
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// - freebsd (amd64)
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// - windows (amd64)
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import (
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"bufio"
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"bytes"
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"context"
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"errors"
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"fmt"
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"log"
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"net/url"
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"os"
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"os/exec"
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"path"
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"path/filepath"
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"reflect"
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"runtime"
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"strconv"
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"strings"
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"time"
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)
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var (
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Timeout = 3 * time.Second
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ErrTimeout = errors.New("command timed out")
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)
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type Invoker interface {
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Command(string, ...string) ([]byte, error)
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CommandWithContext(context.Context, string, ...string) ([]byte, error)
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}
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type Invoke struct{}
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func (i Invoke) Command(name string, arg ...string) ([]byte, error) {
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ctx, cancel := context.WithTimeout(context.Background(), Timeout)
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defer cancel()
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return i.CommandWithContext(ctx, name, arg...)
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}
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func (i Invoke) CommandWithContext(ctx context.Context, name string, arg ...string) ([]byte, error) {
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cmd := exec.CommandContext(ctx, name, arg...)
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var buf bytes.Buffer
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cmd.Stdout = &buf
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cmd.Stderr = &buf
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if err := cmd.Start(); err != nil {
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return buf.Bytes(), err
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}
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if err := cmd.Wait(); err != nil {
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return buf.Bytes(), err
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}
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return buf.Bytes(), nil
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}
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type FakeInvoke struct {
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Suffix string // Suffix species expected file name suffix such as "fail"
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Error error // If Error specfied, return the error.
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}
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// Command in FakeInvoke returns from expected file if exists.
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func (i FakeInvoke) Command(name string, arg ...string) ([]byte, error) {
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if i.Error != nil {
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return []byte{}, i.Error
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}
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arch := runtime.GOOS
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commandName := filepath.Base(name)
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fname := strings.Join(append([]string{commandName}, arg...), "")
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fname = url.QueryEscape(fname)
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fpath := path.Join("testdata", arch, fname)
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if i.Suffix != "" {
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fpath += "_" + i.Suffix
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}
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if PathExists(fpath) {
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return os.ReadFile(fpath)
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}
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return []byte{}, fmt.Errorf("could not find testdata: %s", fpath)
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}
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func (i FakeInvoke) CommandWithContext(ctx context.Context, name string, arg ...string) ([]byte, error) {
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return i.Command(name, arg...)
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}
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var ErrNotImplementedError = errors.New("not implemented yet")
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// ReadFile reads contents from a file
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func ReadFile(filename string) (string, error) {
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content, err := os.ReadFile(filename)
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if err != nil {
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return "", err
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}
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return string(content), nil
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}
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// ReadLines reads contents from a file and splits them by new lines.
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// A convenience wrapper to ReadLinesOffsetN(filename, 0, -1).
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func ReadLines(filename string) ([]string, error) {
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return ReadLinesOffsetN(filename, 0, -1)
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}
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// ReadLines reads contents from file and splits them by new line.
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// The offset tells at which line number to start.
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// The count determines the number of lines to read (starting from offset):
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//
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// n >= 0: at most n lines
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// n < 0: whole file
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func ReadLinesOffsetN(filename string, offset uint, n int) ([]string, error) {
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f, err := os.Open(filename)
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if err != nil {
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return []string{""}, err
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}
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defer func(f *os.File) {
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err := f.Close()
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if err != nil {
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log.Fatalln(err)
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}
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}(f)
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var ret []string
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r := bufio.NewReader(f)
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for i := 0; i < n+int(offset) || n < 0; i++ {
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line, err := r.ReadString('\n')
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if err != nil {
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break
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}
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if i < int(offset) {
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continue
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}
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ret = append(ret, strings.Trim(line, "\n"))
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}
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return ret, nil
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}
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func IntToString(orig []int8) string {
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ret := make([]byte, len(orig))
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size := -1
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for i, o := range orig {
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if o == 0 {
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size = i
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break
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}
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ret[i] = byte(o)
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}
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if size == -1 {
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size = len(orig)
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}
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return string(ret[0:size])
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}
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func UintToString(orig []uint8) string {
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ret := make([]byte, len(orig))
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size := -1
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for i, o := range orig {
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if o == 0 {
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size = i
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break
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}
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ret[i] = byte(o)
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}
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if size == -1 {
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size = len(orig)
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}
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return string(ret[0:size])
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}
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func ByteToString(orig []byte) string {
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n := -1
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l := -1
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for i, b := range orig {
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// skip left side null
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if l == -1 && b == 0 {
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continue
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}
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if l == -1 {
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l = i
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}
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if b == 0 {
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break
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}
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n = i + 1
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}
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if n == -1 {
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return string(orig)
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}
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return string(orig[l:n])
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}
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// ReadInts reads contents from single line file and returns them as []int32.
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func ReadInts(filename string) ([]int64, error) {
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f, err := os.Open(filename)
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if err != nil {
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return []int64{}, err
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}
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defer func(f *os.File) {
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err := f.Close()
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if err != nil {
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log.Fatalln(err)
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}
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}(f)
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var ret []int64
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r := bufio.NewReader(f)
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// The int files that this is concerned with should only be one liners.
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line, err := r.ReadString('\n')
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if err != nil {
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return []int64{}, err
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}
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i, err := strconv.ParseInt(strings.Trim(line, "\n"), 10, 32)
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if err != nil {
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return []int64{}, err
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}
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ret = append(ret, i)
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return ret, nil
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}
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// Parse Hex to uint32 without error
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func HexToUint32(hex string) uint32 {
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vv, _ := strconv.ParseUint(hex, 16, 32)
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return uint32(vv)
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}
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// Parse to int32 without error
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func mustParseInt32(val string) int32 {
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vv, _ := strconv.ParseInt(val, 10, 32)
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return int32(vv)
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}
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// Parse to uint64 without error
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func mustParseUint64(val string) uint64 {
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vv, _ := strconv.ParseInt(val, 10, 64)
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return uint64(vv)
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}
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// Parse to Float64 without error
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func mustParseFloat64(val string) float64 {
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vv, _ := strconv.ParseFloat(val, 64)
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return vv
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}
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// StringsHas checks the target string slice contains src or not
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func StringsHas(target []string, src string) bool {
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for _, t := range target {
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if strings.TrimSpace(t) == src {
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return true
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}
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}
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return false
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}
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// StringsContains checks the src in any string of the target string slice
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func StringsContains(target []string, src string) bool {
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for _, t := range target {
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if strings.Contains(t, src) {
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return true
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}
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}
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return false
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}
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// IntContains checks the src in any int of the target int slice.
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func IntContains(target []int, src int) bool {
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for _, t := range target {
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if src == t {
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return true
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}
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}
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return false
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}
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// get struct attributes.
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// This method is used only for debugging platform dependent code.
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func attributes(m interface{}) map[string]reflect.Type {
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typ := reflect.TypeOf(m)
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if typ.Kind() == reflect.Ptr {
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typ = typ.Elem()
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}
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attrs := make(map[string]reflect.Type)
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if typ.Kind() != reflect.Struct {
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return nil
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}
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for i := 0; i < typ.NumField(); i++ {
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p := typ.Field(i)
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if !p.Anonymous {
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attrs[p.Name] = p.Type
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}
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}
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return attrs
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}
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func PathExists(filename string) bool {
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if _, err := os.Stat(filename); err == nil {
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return true
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}
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return false
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}
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// GetEnv retrieves the environment variable key. If it does not exist it returns the default.
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func GetEnv(key, dfault string, combineWith ...string) string {
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value := os.Getenv(key)
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if value == "" {
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value = dfault
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}
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switch len(combineWith) {
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case 0:
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return value
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case 1:
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return filepath.Join(value, combineWith[0])
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default:
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all := make([]string, len(combineWith)+1)
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all[0] = value
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copy(all[1:], combineWith)
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return filepath.Join(all...)
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}
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}
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func HostProc(combineWith ...string) string {
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return GetEnv("HOST_PROC", "/proc", combineWith...)
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}
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func HostSys(combineWith ...string) string {
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return GetEnv("HOST_SYS", "/sys", combineWith...)
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}
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func HostEtc(combineWith ...string) string {
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return GetEnv("HOST_ETC", "/etc", combineWith...)
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}
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func HostVar(combineWith ...string) string {
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return GetEnv("HOST_VAR", "/var", combineWith...)
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}
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func HostRun(combineWith ...string) string {
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return GetEnv("HOST_RUN", "/run", combineWith...)
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}
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func HostDev(combineWith ...string) string {
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return GetEnv("HOST_DEV", "/dev", combineWith...)
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}
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// getSysctrlEnv sets LC_ALL=C in a list of env vars for use when running
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// sysctl commands (see DoSysctrl).
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func getSysctrlEnv(env []string) []string {
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foundLC := false
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for i, line := range env {
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if strings.HasPrefix(line, "LC_ALL") {
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env[i] = "LC_ALL=C"
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foundLC = true
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}
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}
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if !foundLC {
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env = append(env, "LC_ALL=C")
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}
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return env
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}
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