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vendor: github.com/opencontainers/runc v1.0.1

Browse source 
Signed-off-by: Akihiro Suda <akihiro.suda.cz@hco.ntt.co.jp>
This commit is contained in:
Akihiro Suda 2021-07-19 15:55:28 +09:00
parent f50c7644cf
commit 1256aa0241
No known key found for this signature in database
GPG key ID: 49524C6F9F638F1A
16 changed files with 167 additions and 278 deletions
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2
vendor.conf
View file

@ -87,7 +87,7 @@ google.golang.org/grpc f495f5b15ae7ccda3b38c53a1bfc
# the containerd project first, and update both after that is merged.
# This commit does not need to match RUNC_COMMIT as it is used for helper
# packages but should be newer or equal.
github.com/opencontainers/runc b9ee9c6314599f1b4a7f497e1f1f856fe433d3b7 # v1.0.0-rc95
github.com/opencontainers/runc 4144b63817ebcc5b358fc2c8ef95f7cddd709aa7 # v1.0.1
github.com/opencontainers/runtime-spec 1c3f411f041711bbeecf35ff7e93461ea6789220 # v1.0.3-0.20210326190908-1c3f411f0417
github.com/opencontainers/image-spec d60099175f88c47cd379c4738d158884749ed235 # v1.0.1
github.com/cyphar/filepath-securejoin a261ee33d7a517f054effbf451841abaafe3e0fd # v0.2.2

12
vendor/github.com/opencontainers/runc/go.mod generated vendored
View file

@ -3,26 +3,26 @@ module github.com/opencontainers/runc
go 1.13
require (
github.com/bits-and-blooms/bitset v1.2.0
github.com/checkpoint-restore/go-criu/v5 v5.0.0
github.com/cilium/ebpf v0.5.0
github.com/cilium/ebpf v0.6.2
github.com/containerd/console v1.0.2
github.com/coreos/go-systemd/v22 v22.3.1
github.com/coreos/go-systemd/v22 v22.3.2
github.com/cyphar/filepath-securejoin v0.2.2
github.com/docker/go-units v0.4.0
github.com/godbus/dbus/v5 v5.0.4
github.com/moby/sys/mountinfo v0.4.1
github.com/mrunalp/fileutils v0.5.0
github.com/opencontainers/runtime-spec v1.0.3-0.20210326190908-1c3f411f0417
github.com/opencontainers/selinux v1.8.0
github.com/opencontainers/selinux v1.8.2
github.com/pkg/errors v0.9.1
github.com/seccomp/libseccomp-golang v0.9.1
github.com/sirupsen/logrus v1.7.0
github.com/sirupsen/logrus v1.8.1
github.com/syndtr/gocapability v0.0.0-20200815063812-42c35b437635
// NOTE: urfave/cli must be <= v1.22.1 due to a regression: https://github.com/urfave/cli/issues/1092
github.com/urfave/cli v1.22.1
github.com/vishvananda/netlink v1.1.0
github.com/willf/bitset v1.1.11
golang.org/x/net v0.0.0-20201224014010-6772e930b67b
golang.org/x/sys v0.0.0-20210426230700-d19ff857e887
google.golang.org/protobuf v1.25.0
google.golang.org/protobuf v1.26.0
)

60
vendor/github.com/opencontainers/runc/libcontainer/cgroups/fscommon/open.go → vendor/github.com/opencontainers/runc/libcontainer/cgroups/file.go generated vendored
View file

@ -1,6 +1,7 @@
package fscommon
package cgroups
import (
"bytes"
"os"
"strings"
"sync"
@ -10,6 +11,54 @@ import (
"golang.org/x/sys/unix"
)
// OpenFile opens a cgroup file in a given dir with given flags.
// It is supposed to be used for cgroup files only.
func OpenFile(dir, file string, flags int) (*os.File, error) {
if dir == "" {
return nil, errors.Errorf("no directory specified for %s", file)
}
return openFile(dir, file, flags)
}
// ReadFile reads data from a cgroup file in dir.
// It is supposed to be used for cgroup files only.
func ReadFile(dir, file string) (string, error) {
fd, err := OpenFile(dir, file, unix.O_RDONLY)
if err != nil {
return "", err
}
defer fd.Close()
var buf bytes.Buffer
_, err = buf.ReadFrom(fd)
return buf.String(), err
}
// WriteFile writes data to a cgroup file in dir.
// It is supposed to be used for cgroup files only.
func WriteFile(dir, file, data string) error {
fd, err := OpenFile(dir, file, unix.O_WRONLY)
if err != nil {
return err
}
defer fd.Close()
if err := retryingWriteFile(fd, data); err != nil {
return errors.Wrapf(err, "failed to write %q", data)
}
return nil
}
func retryingWriteFile(fd *os.File, data string) error {
for {
_, err := fd.Write([]byte(data))
if errors.Is(err, unix.EINTR) {
logrus.Infof("interrupted while writing %s to %s", data, fd.Name())
continue
}
return err
}
}
const (
cgroupfsDir = "/sys/fs/cgroup"
cgroupfsPrefix = cgroupfsDir + "/"
@ -28,7 +77,8 @@ var (
func prepareOpenat2() error {
prepOnce.Do(func() {
fd, err := unix.Openat2(-1, cgroupfsDir, &unix.OpenHow{
Flags: unix.O_DIRECTORY | unix.O_PATH})
Flags: unix.O_DIRECTORY | unix.O_PATH,
})
if err != nil {
prepErr = &os.PathError{Op: "openat2", Path: cgroupfsDir, Err: err}
if err != unix.ENOSYS {
@ -52,7 +102,6 @@ func prepareOpenat2() error {
// cgroupv2 has a single mountpoint and no "cpu,cpuacct" symlinks
resolveFlags |= unix.RESOLVE_NO_XDEV | unix.RESOLVE_NO_SYMLINKS
}
})
return prepErr
@ -60,10 +109,7 @@ func prepareOpenat2() error {
// OpenFile opens a cgroup file in a given dir with given flags.
// It is supposed to be used for cgroup files only.
func OpenFile(dir, file string, flags int) (*os.File, error) {
if dir == "" {
return nil, errors.Errorf("no directory specified for %s", file)
}
func openFile(dir, file string, flags int) (*os.File, error) {
mode := os.FileMode(0)
if TestMode && flags&os.O_WRONLY != 0 {
// "emulate" cgroup fs for unit tests

51
vendor/github.com/opencontainers/runc/libcontainer/cgroups/fscommon/fscommon.go generated vendored
View file

@ -1,51 +0,0 @@
// +build linux
package fscommon
import (
"bytes"
"os"
"github.com/pkg/errors"
"github.com/sirupsen/logrus"
"golang.org/x/sys/unix"
)
// WriteFile writes data to a cgroup file in dir.
// It is supposed to be used for cgroup files only.
func WriteFile(dir, file, data string) error {
fd, err := OpenFile(dir, file, unix.O_WRONLY)
if err != nil {
return err
}
defer fd.Close()
if err := retryingWriteFile(fd, data); err != nil {
return errors.Wrapf(err, "failed to write %q", data)
}
return nil
}
// ReadFile reads data from a cgroup file in dir.
// It is supposed to be used for cgroup files only.
func ReadFile(dir, file string) (string, error) {
fd, err := OpenFile(dir, file, unix.O_RDONLY)
if err != nil {
return "", err
}
defer fd.Close()
var buf bytes.Buffer
_, err = buf.ReadFrom(fd)
return buf.String(), err
}
func retryingWriteFile(fd *os.File, data string) error {
for {
_, err := fd.Write([]byte(data))
if errors.Is(err, unix.EINTR) {
logrus.Infof("interrupted while writing %s to %s", data, fd.Name())
continue
}
return err
}
}

122
vendor/github.com/opencontainers/runc/libcontainer/cgroups/fscommon/utils.go generated vendored
View file

@ -1,122 +0,0 @@
// +build linux
package fscommon
import (
"errors"
"fmt"
"math"
"strconv"
"strings"
)
var (
ErrNotValidFormat = errors.New("line is not a valid key value format")
)
// ParseUint converts a string to an uint64 integer.
// Negative values are returned at zero as, due to kernel bugs,
// some of the memory cgroup stats can be negative.
func ParseUint(s string, base, bitSize int) (uint64, error) {
value, err := strconv.ParseUint(s, base, bitSize)
if err != nil {
intValue, intErr := strconv.ParseInt(s, base, bitSize)
// 1. Handle negative values greater than MinInt64 (and)
// 2. Handle negative values lesser than MinInt64
if intErr == nil && intValue < 0 {
return 0, nil
} else if intErr != nil && intErr.(*strconv.NumError).Err == strconv.ErrRange && intValue < 0 {
return 0, nil
}
return value, err
}
return value, nil
}
// ParseKeyValue parses a space-separated "name value" kind of cgroup
// parameter and returns its key as a string, and its value as uint64
// (ParseUint is used to convert the value). For example,
// "io_service_bytes 1234" will be returned as "io_service_bytes", 1234.
func ParseKeyValue(t string) (string, uint64, error) {
parts := strings.SplitN(t, " ", 3)
if len(parts) != 2 {
return "", 0, fmt.Errorf("line %q is not in key value format", t)
}
value, err := ParseUint(parts[1], 10, 64)
if err != nil {
return "", 0, fmt.Errorf("unable to convert to uint64: %v", err)
}
return parts[0], value, nil
}
// GetValueByKey reads a key-value pairs from the specified cgroup file,
// and returns a value of the specified key. ParseUint is used for value
// conversion.
func GetValueByKey(path, file, key string) (uint64, error) {
content, err := ReadFile(path, file)
if err != nil {
return 0, err
}
lines := strings.Split(string(content), "\n")
for _, line := range lines {
arr := strings.Split(line, " ")
if len(arr) == 2 && arr[0] == key {
return ParseUint(arr[1], 10, 64)
}
}
return 0, nil
}
// GetCgroupParamUint reads a single uint64 value from the specified cgroup file.
// If the value read is "max", the math.MaxUint64 is returned.
func GetCgroupParamUint(path, file string) (uint64, error) {
contents, err := GetCgroupParamString(path, file)
if err != nil {
return 0, err
}
contents = strings.TrimSpace(contents)
if contents == "max" {
return math.MaxUint64, nil
}
res, err := ParseUint(contents, 10, 64)
if err != nil {
return res, fmt.Errorf("unable to parse file %q", path+"/"+file)
}
return res, nil
}
// GetCgroupParamInt reads a single int64 value from specified cgroup file.
// If the value read is "max", the math.MaxInt64 is returned.
func GetCgroupParamInt(path, file string) (int64, error) {
contents, err := ReadFile(path, file)
if err != nil {
return 0, err
}
contents = strings.TrimSpace(contents)
if contents == "max" {
return math.MaxInt64, nil
}
res, err := strconv.ParseInt(contents, 10, 64)
if err != nil {
return res, fmt.Errorf("unable to parse %q as a int from Cgroup file %q", contents, path+"/"+file)
}
return res, nil
}
// GetCgroupParamString reads a string from the specified cgroup file.
func GetCgroupParamString(path, file string) (string, error) {
contents, err := ReadFile(path, file)
if err != nil {
return "", err
}
return strings.TrimSpace(contents), nil
}

6
vendor/github.com/opencontainers/runc/libcontainer/cgroups/utils.go generated vendored
View file

@ -15,7 +15,6 @@ import (
"sync"
"time"
"github.com/opencontainers/runc/libcontainer/cgroups/fscommon"
"github.com/opencontainers/runc/libcontainer/userns"
"github.com/sirupsen/logrus"
"golang.org/x/sys/unix"
@ -88,7 +87,7 @@ func GetAllSubsystems() ([]string, error) {
// - freezer: implemented in kernel 5.2
// We assume these are always available, as it is hard to detect availability.
pseudo := []string{"devices", "freezer"}
data, err := fscommon.ReadFile("/sys/fs/cgroup", "cgroup.controllers")
data, err := ReadFile("/sys/fs/cgroup", "cgroup.controllers")
if err != nil {
return nil, err
}
@ -267,7 +266,6 @@ func RemovePaths(paths map[string]string) (err error) {
case retries - 1:
logrus.WithError(err).Error("Failed to remove cgroup")
}
}
_, err := os.Stat(p)
// We need this strange way of checking cgroups existence because
@ -376,7 +374,7 @@ func WriteCgroupProc(dir string, pid int) error {
return nil
}
file, err := fscommon.OpenFile(dir, CgroupProcesses, os.O_WRONLY)
file, err := OpenFile(dir, CgroupProcesses, os.O_WRONLY)
if err != nil {
return fmt.Errorf("failed to write %v to %v: %v", pid, CgroupProcesses, err)
}

10
vendor/github.com/opencontainers/runc/libcontainer/configs/cgroup_linux.go generated vendored
View file

@ -13,12 +13,12 @@ const (
Thawed FreezerState = "THAWED"
)
// Cgroup holds properties of a cgroup on Linux.
type Cgroup struct {
// Deprecated, use Path instead
// Name specifies the name of the cgroup
Name string `json:"name,omitempty"`
// name of parent of cgroup or slice
// Deprecated, use Path instead
// Parent specifies the name of parent of cgroup or slice
Parent string `json:"parent,omitempty"`
// Path specifies the path to cgroups that are created and/or joined by the container.
@ -127,8 +127,8 @@ type Resources struct {
// SkipDevices allows to skip configuring device permissions.
// Used by e.g. kubelet while creating a parent cgroup (kubepods)
// common for many containers.
// common for many containers, and by runc update.
//
// NOTE it is impossible to start a container which has this flag set.
SkipDevices bool `json:"skip_devices"`
SkipDevices bool `json:"-"`
}

4
vendor/github.com/opencontainers/runc/libcontainer/configs/cgroup_unsupported.go generated vendored
View file

@ -2,7 +2,7 @@
package configs
// Cgroup holds properties of a cgroup on Linux
// TODO Windows: This can ultimately be entirely factored out on Windows as
// cgroups are a Unix-specific construct.
type Cgroup struct {
}
type Cgroup struct{}

10
vendor/github.com/opencontainers/runc/libcontainer/configs/config.go generated vendored
View file

@ -208,9 +208,11 @@ type Config struct {
RootlessCgroups bool `json:"rootless_cgroups,omitempty"`
}
type HookName string
type HookList []Hook
type Hooks map[HookName]HookList
type (
HookName string
HookList []Hook
Hooks map[HookName]HookList
)
const (
// Prestart commands are executed after the container namespaces are created,
@ -387,7 +389,7 @@ func (c Command) Run(s *specs.State) error {
case err := <-errC:
return err
case <-timerCh:
cmd.Process.Kill()
_ = cmd.Process.Kill()
<-errC
return fmt.Errorf("hook ran past specified timeout of %.1fs", c.Timeout.Seconds())
}

17
vendor/github.com/opencontainers/runc/libcontainer/configs/devices.go generated vendored
View file

@ -1,17 +0,0 @@
package configs
import "github.com/opencontainers/runc/libcontainer/devices"
type (
// Deprecated: use libcontainer/devices.Device
Device = devices.Device
// Deprecated: use libcontainer/devices.Rule
DeviceRule = devices.Rule
// Deprecated: use libcontainer/devices.Type
DeviceType = devices.Type
// Deprecated: use libcontainer/devices.Permissions
DevicePermissions = devices.Permissions
)

2
vendor/github.com/opencontainers/runc/libcontainer/configs/mount.go generated vendored
View file

@ -3,7 +3,7 @@ package configs
const (
// EXT_COPYUP is a directive to copy up the contents of a directory when
// a tmpfs is mounted over it.
EXT_COPYUP = 1 << iota
EXT_COPYUP = 1 << iota //nolint:golint // ignore "don't use ALL_CAPS" warning
)
type Mount struct {

3
vendor/github.com/opencontainers/runc/libcontainer/configs/namespaces_unsupported.go generated vendored
View file

@ -4,5 +4,4 @@ package configs
// Namespace defines configuration for each namespace. It specifies an
// alternate path that is able to be joined via setns.
type Namespace struct {
}
type Namespace struct{}

13
vendor/github.com/opencontainers/runc/libcontainer/configs/network.go generated vendored
View file

@ -50,7 +50,10 @@ type Network struct {
HairpinMode bool `json:"hairpin_mode"`
}
// Routes can be specified to create entries in the route table as the container is started
// Route defines a routing table entry.
//
// Routes can be specified to create entries in the routing table as the container
// is started.
//
// All of destination, source, and gateway should be either IPv4 or IPv6.
// One of the three options must be present, and omitted entries will use their
@ -58,15 +61,15 @@ type Network struct {
// gateway to 1.2.3.4 and the interface to eth0 will set up a standard
// destination of 0.0.0.0(or *) when viewed in the route table.
type Route struct {
// Sets the destination and mask, should be a CIDR. Accepts IPv4 and IPv6
// Destination specifies the destination IP address and mask in the CIDR form.
Destination string `json:"destination"`
// Sets the source and mask, should be a CIDR. Accepts IPv4 and IPv6
// Source specifies the source IP address and mask in the CIDR form.
Source string `json:"source"`
// Sets the gateway. Accepts IPv4 and IPv6
// Gateway specifies the gateway IP address.
Gateway string `json:"gateway"`
// The device to set this route up for, for example: eth0
// InterfaceName specifies the device to set this route up for, for example eth0.
InterfaceName string `json:"interface_name"`
}

11
vendor/github.com/opencontainers/runc/libcontainer/devices/device_unix.go generated vendored
View file

@ -11,10 +11,8 @@ import (
"golang.org/x/sys/unix"
)
var (
// ErrNotADevice denotes that a file is not a valid linux device.
ErrNotADevice = errors.New("not a device node")
)
// ErrNotADevice denotes that a file is not a valid linux device.
var ErrNotADevice = errors.New("not a device node")
// Testing dependencies
var (
@ -29,8 +27,9 @@ func mkDev(d *Rule) (uint64, error) {
return unix.Mkdev(uint32(d.Major), uint32(d.Minor)), nil
}
// Given the path to a device and its cgroup_permissions(which cannot be easily queried) look up the
// information about a linux device and return that information as a Device struct.
// DeviceFromPath takes the path to a device and its cgroup_permissions (which
// cannot be easily queried) to look up the information about a linux device
// and returns that information as a Device struct.
func DeviceFromPath(path, permissions string) (*Device, error) {
var stat unix.Stat_t
err := unixLstat(path, &stat)

6
vendor/github.com/opencontainers/runc/libcontainer/nsenter/test/escape.go generated vendored
View file

@ -14,7 +14,7 @@ import (
"unsafe"
)
func testEscapeJsonString(t *testing.T, input, want string) {
func testEscapeJSONString(t *testing.T, input, want string) {
in := C.CString(input)
out := C.escape_json_string(in)
got := C.GoString(out)
@ -25,7 +25,7 @@ func testEscapeJsonString(t *testing.T, input, want string) {
}
}
func testEscapeJson(t *testing.T) {
func testEscapeJSON(t *testing.T) {
testCases := []struct {
input, output string
}{
@ -48,6 +48,6 @@ func testEscapeJson(t *testing.T) {
}
for _, tc := range testCases {
testEscapeJsonString(t, tc.input, tc.output)
testEscapeJSONString(t, tc.input, tc.output)
}
}

116
vendor/github.com/opencontainers/runc/libcontainer/user/user.go generated vendored
View file

@ -2,6 +2,7 @@ package user
import (
"bufio"
"bytes"
"errors"
"fmt"
"io"
@ -11,19 +12,17 @@ import (
)
const (
minId = 0
maxId = 1<<31 - 1 //for 32-bit systems compatibility
minID = 0
maxID = 1<<31 - 1 // for 32-bit systems compatibility
)
var (
// The current operating system does not provide the required data for user lookups.
ErrUnsupported = errors.New("user lookup: operating system does not provide passwd-formatted data")
// No matching entries found in file.
// ErrNoPasswdEntries is returned if no matching entries were found in /etc/group.
ErrNoPasswdEntries = errors.New("no matching entries in passwd file")
ErrNoGroupEntries = errors.New("no matching entries in group file")
ErrRange = fmt.Errorf("uids and gids must be in range %d-%d", minId, maxId)
// ErrNoGroupEntries is returned if no matching entries were found in /etc/passwd.
ErrNoGroupEntries = errors.New("no matching entries in group file")
// ErrRange is returned if a UID or GID is outside of the valid range.
ErrRange = fmt.Errorf("uids and gids must be in range %d-%d", minID, maxID)
)
type User struct {
@ -57,11 +56,11 @@ type IDMap struct {
Count int64
}
func parseLine(line string, v ...interface{}) {
parseParts(strings.Split(line, ":"), v...)
func parseLine(line []byte, v ...interface{}) {
parseParts(bytes.Split(line, []byte(":")), v...)
}
func parseParts(parts []string, v ...interface{}) {
func parseParts(parts [][]byte, v ...interface{}) {
if len(parts) == 0 {
return
}
@ -77,16 +76,16 @@ func parseParts(parts []string, v ...interface{}) {
// This is legit.
switch e := v[i].(type) {
case *string:
*e = p
*e = string(p)
case *int:
// "numbers", with conversion errors ignored because of some misbehaving configuration files.
*e, _ = strconv.Atoi(p)
*e, _ = strconv.Atoi(string(p))
case *int64:
*e, _ = strconv.ParseInt(p, 10, 64)
*e, _ = strconv.ParseInt(string(p), 10, 64)
case *[]string:
// Comma-separated lists.
if p != "" {
*e = strings.Split(p, ",")
if len(p) != 0 {
*e = strings.Split(string(p), ",")
} else {
*e = []string{}
}
@ -130,8 +129,8 @@ func ParsePasswdFilter(r io.Reader, filter func(User) bool) ([]User, error) {
)
for s.Scan() {
line := strings.TrimSpace(s.Text())
if line == "" {
line := bytes.TrimSpace(s.Bytes())
if len(line) == 0 {
continue
}
@ -181,15 +180,53 @@ func ParseGroupFilter(r io.Reader, filter func(Group) bool) ([]Group, error) {
if r == nil {
return nil, fmt.Errorf("nil source for group-formatted data")
}
rd := bufio.NewReader(r)
out := []Group{}
var (
s = bufio.NewScanner(r)
out = []Group{}
)
// Read the file line-by-line.
for {
var (
isPrefix bool
wholeLine []byte
err error
)
for s.Scan() {
text := s.Text()
if text == "" {
// Read the next line. We do so in chunks (as much as reader's
// buffer is able to keep), check if we read enough columns
// already on each step and store final result in wholeLine.
for {
var line []byte
line, isPrefix, err = rd.ReadLine()
if err != nil {
// We should return no error if EOF is reached
// without a match.
if err == io.EOF { //nolint:errorlint // comparison with io.EOF is legit, https://github.com/polyfloyd/go-errorlint/pull/12
err = nil
}
return out, err
}
// Simple common case: line is short enough to fit in a
// single reader's buffer.
if !isPrefix && len(wholeLine) == 0 {
wholeLine = line
break
}
wholeLine = append(wholeLine, line...)
// Check if we read the whole line already.
if !isPrefix {
break
}
}
// There's no spec for /etc/passwd or /etc/group, but we try to follow
// the same rules as the glibc parser, which allows comments and blank
// space at the beginning of a line.
wholeLine = bytes.TrimSpace(wholeLine)
if len(wholeLine) == 0 || wholeLine[0] == '#' {
continue
}
@ -199,17 +236,12 @@ func ParseGroupFilter(r io.Reader, filter func(Group) bool) ([]Group, error) {
// root:x:0:root
// adm:x:4:root,adm,daemon
p := Group{}
parseLine(text, &p.Name, &p.Pass, &p.Gid, &p.List)
parseLine(wholeLine, &p.Name, &p.Pass, &p.Gid, &p.List)
if filter == nil || filter(p) {
out = append(out, p)
}
}
if err := s.Err(); err != nil {
return nil, err
}
return out, nil
}
type ExecUser struct {
@ -280,7 +312,7 @@ func GetExecUser(userSpec string, defaults *ExecUser, passwd, group io.Reader) (
// Allow for userArg to have either "user" syntax, or optionally "user:group" syntax
var userArg, groupArg string
parseLine(userSpec, &userArg, &groupArg)
parseLine([]byte(userSpec), &userArg, &groupArg)
// Convert userArg and groupArg to be numeric, so we don't have to execute
// Atoi *twice* for each iteration over lines.
@ -328,7 +360,7 @@ func GetExecUser(userSpec string, defaults *ExecUser, passwd, group io.Reader) (
user.Uid = uidArg
// Must be inside valid uid range.
if user.Uid < minId || user.Uid > maxId {
if user.Uid < minID || user.Uid > maxID {
return nil, ErrRange
}
@ -377,7 +409,7 @@ func GetExecUser(userSpec string, defaults *ExecUser, passwd, group io.Reader) (
user.Gid = gidArg
// Must be inside valid gid range.
if user.Gid < minId || user.Gid > maxId {
if user.Gid < minID || user.Gid > maxID {
return nil, ErrRange
}
@ -401,7 +433,7 @@ func GetExecUser(userSpec string, defaults *ExecUser, passwd, group io.Reader) (
// or the given group data is nil, the id will be returned as-is
// provided it is in the legal range.
func GetAdditionalGroups(additionalGroups []string, group io.Reader) ([]int, error) {
var groups = []Group{}
groups := []Group{}
if group != nil {
var err error
groups, err = ParseGroupFilter(group, func(g Group) bool {
@ -439,7 +471,7 @@ func GetAdditionalGroups(additionalGroups []string, group io.Reader) ([]int, err
return nil, fmt.Errorf("Unable to find group %s", ag)
}
// Ensure gid is inside gid range.
if gid < minId || gid > maxId {
if gid < minID || gid > maxID {
return nil, ErrRange
}
gidMap[int(gid)] = struct{}{}
@ -498,8 +530,8 @@ func ParseSubIDFilter(r io.Reader, filter func(SubID) bool) ([]SubID, error) {
)
for s.Scan() {
line := strings.TrimSpace(s.Text())
if line == "" {
line := bytes.TrimSpace(s.Bytes())
if len(line) == 0 {
continue
}
@ -551,14 +583,14 @@ func ParseIDMapFilter(r io.Reader, filter func(IDMap) bool) ([]IDMap, error) {
)
for s.Scan() {
line := strings.TrimSpace(s.Text())
if line == "" {
line := bytes.TrimSpace(s.Bytes())
if len(line) == 0 {
continue
}
// see: man 7 user_namespaces
p := IDMap{}
parseParts(strings.Fields(line), &p.ID, &p.ParentID, &p.Count)
parseParts(bytes.Fields(line), &p.ID, &p.ParentID, &p.Count)
if filter == nil || filter(p) {
out = append(out, p)