Switch to github.com/moby/sys/capability v0.4.0

This removes the last unversioned package in runc's direct dependencies.

Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>

go.mod

@@ -15,6 +15,7 @@ require (
 	github.com/cyphar/filepath-securejoin v0.3.4
 	github.com/docker/go-units v0.5.0
 	github.com/godbus/dbus/v5 v5.1.0
+	github.com/moby/sys/capability v0.4.0
 	github.com/moby/sys/mountinfo v0.7.2
 	github.com/moby/sys/user v0.3.0
 	github.com/moby/sys/userns v0.1.0
@@ -23,7 +24,6 @@ require (
 	github.com/opencontainers/selinux v1.11.1
 	github.com/seccomp/libseccomp-golang v0.10.0
 	github.com/sirupsen/logrus v1.9.3
-	github.com/syndtr/gocapability v0.0.0-20200815063812-42c35b437635
 	github.com/urfave/cli v1.22.16
 	github.com/vishvananda/netlink v1.3.0
 	golang.org/x/net v0.31.0

go.sum

@@ -39,6 +39,8 @@ github.com/mdlayher/netlink v1.7.2 h1:/UtM3ofJap7Vl4QWCPDGXY8d3GIY2UGSDbK+QWmY8/
 github.com/mdlayher/netlink v1.7.2/go.mod h1:xraEF7uJbxLhc5fpHL4cPe221LI2bdttWlU+ZGLfQSw=
 github.com/mdlayher/socket v0.4.1 h1:eM9y2/jlbs1M615oshPQOHZzj6R6wMT7bX5NPiQvn2U=
 github.com/mdlayher/socket v0.4.1/go.mod h1:cAqeGjoufqdxWkD7DkpyS+wcefOtmu5OQ8KuoJGIReA=
+github.com/moby/sys/capability v0.4.0 h1:4D4mI6KlNtWMCM1Z/K0i7RV1FkX+DBDHKVJpCndZoHk=
+github.com/moby/sys/capability v0.4.0/go.mod h1:4g9IK291rVkms3LKCDOoYlnV8xKwoDTpIrNEE35Wq0I=
 github.com/moby/sys/mountinfo v0.7.2 h1:1shs6aH5s4o5H2zQLn796ADW1wMrIwHsyJ2v9KouLrg=
 github.com/moby/sys/mountinfo v0.7.2/go.mod h1:1YOa8w8Ih7uW0wALDUgT1dTTSBrZ+HiBLGws92L2RU4=
 github.com/moby/sys/user v0.3.0 h1:9ni5DlcW5an3SvRSx4MouotOygvzaXbaSrc/wGDFWPo=
@@ -73,8 +75,6 @@ github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO
 github.com/stretchr/testify v1.8.4/go.mod h1:sz/lmYIOXD/1dqDmKjjqLyZ2RngseejIcXlSw2iwfAo=
 github.com/stretchr/testify v1.9.0 h1:HtqpIVDClZ4nwg75+f6Lvsy/wHu+3BoSGCbBAcpTsTg=
 github.com/stretchr/testify v1.9.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
-github.com/syndtr/gocapability v0.0.0-20200815063812-42c35b437635 h1:kdXcSzyDtseVEc4yCz2qF8ZrQvIDBJLl4S1c3GCXmoI=
-github.com/syndtr/gocapability v0.0.0-20200815063812-42c35b437635/go.mod h1:hkRG7XYTFWNJGYcbNJQlaLq0fg1yr4J4t/NcTQtrfww=
 github.com/urfave/cli v1.22.16 h1:MH0k6uJxdwdeWQTwhSO42Pwr4YLrNLwBtg1MRgTqPdQ=
 github.com/urfave/cli v1.22.16/go.mod h1:EeJR6BKodywf4zciqrdw6hpCPk68JO9z5LazXZMn5Po=
 github.com/vishvananda/netlink v1.3.0 h1:X7l42GfcV4S6E4vHTsw48qbrV+9PVojNfIhZcwQdrZk=

libcontainer/capabilities/capabilities.go

@@ -3,42 +3,36 @@
 package capabilities
 
 import (
+	"fmt"
 	"sort"
 	"strings"
 	"sync"
 
+	"github.com/moby/sys/capability"
 	"github.com/opencontainers/runc/libcontainer/configs"
 	"github.com/sirupsen/logrus"
-	"github.com/syndtr/gocapability/capability"
 )
 
-const allCapabilityTypes = capability.CAPS | capability.BOUNDING | capability.AMBIENT
+func capToStr(c capability.Cap) string {
+	return "CAP_" + strings.ToUpper(c.String())
+}
 
-var (
+var capMap = sync.OnceValues(func() (map[string]capability.Cap, error) {
-	capTypes = []capability.CapType{
+	list, err := capability.ListSupported()
-		capability.BOUNDING,
+	if err != nil {
-		capability.PERMITTED,
+		return nil, err
-		capability.INHERITABLE,
-		capability.EFFECTIVE,
-		capability.AMBIENT,
 	}
-
+	cm := make(map[string]capability.Cap, len(list))
-	capMap = sync.OnceValue(func() map[string]capability.Cap {
+	for _, c := range list {
-		cm := make(map[string]capability.Cap, capability.CAP_LAST_CAP+1)
+		cm[capToStr(c)] = c
-		for _, c := range capability.List() {
+	}
-			if c > capability.CAP_LAST_CAP {
+	return cm, nil
-				continue
+})
-			}
-			cm["CAP_"+strings.ToUpper(c.String())] = c
-		}
-		return cm
-	})
-)
 
 // KnownCapabilities returns the list of the known capabilities.
 // Used by `runc features`.
 func KnownCapabilities() []string {
-	list := capability.List()
+	list := capability.ListKnown()
 	res := make([]string, len(list))
 	for i, c := range list {
 		res[i] = "CAP_" + strings.ToUpper(c.String())
@@ -50,11 +44,12 @@ func KnownCapabilities() []string {
 // or Capabilities that are unavailable in the current environment are ignored,
 // printing a warning instead.
 func New(capConfig *configs.Capabilities) (*Caps, error) {
-	var (
+	var c Caps
-		err error
-		c   Caps
-	)
 
+	_, err := capMap()
+	if err != nil {
+		return nil, err
+	}
 	unknownCaps := make(map[string]struct{})
 	c.caps = map[capability.CapType][]capability.Cap{
 		capability.BOUNDING:    capSlice(capConfig.Bounding, unknownCaps),
@@ -76,7 +71,7 @@ func New(capConfig *configs.Capabilities) (*Caps, error) {
 // equivalent, and returns them as a slice. Unknown or unavailable capabilities
 // are not returned, but appended to unknownCaps.
 func capSlice(caps []string, unknownCaps map[string]struct{}) []capability.Cap {
-	cm := capMap()
+	cm, _ := capMap()
 	out := make([]capability.Cap, 0, len(caps))
 	for _, c := range caps {
 		if v, ok := cm[c]; !ok {
@@ -113,9 +108,36 @@ func (c *Caps) ApplyBoundingSet() error {
 
 // Apply sets all the capabilities for the current process in the config.
 func (c *Caps) ApplyCaps() error {
-	c.pid.Clear(allCapabilityTypes)
+	c.pid.Clear(capability.CAPS | capability.BOUNDS)
-	for _, g := range capTypes {
+	for _, g := range []capability.CapType{
+		capability.EFFECTIVE,
+		capability.PERMITTED,
+		capability.INHERITABLE,
+		capability.BOUNDING,
+	} {
 		c.pid.Set(g, c.caps[g]...)
 	}
-	return c.pid.Apply(allCapabilityTypes)
+	if err := c.pid.Apply(capability.CAPS | capability.BOUNDS); err != nil {
+		return fmt.Errorf("can't apply capabilities: %w", err)
+	}
+
+	// Old version of capability package used to ignore errors from setting
+	// ambient capabilities, which is now fixed (see
+	// https://github.com/kolyshkin/capability/pull/3).
+	//
+	// To maintain backward compatibility, set ambient caps one by one and
+	// don't return any errors, only warn.
+	ambs := c.caps[capability.AMBIENT]
+	err := capability.ResetAmbient()
+	if err != nil {
+		return fmt.Errorf("can't reset ambient capabilities: %w", err)
+	}
+	for _, a := range ambs {
+		err := capability.SetAmbient(true, a)
+		if err != nil {
+			logrus.Warnf("can't raise ambient capability %s: %v", capToStr(a), err)
+		}
+	}
+
+	return nil
 }

libcontainer/capabilities/capabilities_linux_test.go

@@ -5,12 +5,20 @@ import (
 	"os"
 	"testing"
 
+	"github.com/moby/sys/capability"
 	"github.com/opencontainers/runc/libcontainer/configs"
 	"github.com/sirupsen/logrus"
 	"github.com/sirupsen/logrus/hooks/test"
-	"github.com/syndtr/gocapability/capability"
 )
 
+var capTypes = []capability.CapType{
+	capability.BOUNDING,
+	capability.PERMITTED,
+	capability.INHERITABLE,
+	capability.EFFECTIVE,
+	capability.AMBIENT,
+}
+
 func TestNew(t *testing.T) {
 	cs := []string{"CAP_CHOWN", "CAP_UNKNOWN", "CAP_UNKNOWN2"}
 	conf := configs.Capabilities{

tests/integration/capabilities.bats

@@ -116,3 +116,17 @@ function teardown() {
 	[[ "${output}" == *"CapBnd:	0000000400000021"* ]]
 	[[ "${output}" == *"CapAmb:	0000000400000001"* ]]
 }
+
+@test "runc run [ambient caps not set in inheritable result in a warning]" {
+	update_config '   .process.capabilities.inheritable = ["CAP_KILL"]
+                       | .process.capabilities.ambient = ["CAP_KILL", "CAP_CHOWN"]'
+	runc run test_amb
+	[ "$status" -eq 0 ]
+	# This should result in CAP_KILL set in ambient,
+	# and a warning about inability to set CAP_CHOWN.
+	#
+	# CAP_CHOWN is 0, the bit mask is 0x1 (1 << 0)
+	# CAP_KILL is 5, the bit mask is 0x20 (1 << 5).
+	[[ "$output" == *"can't raise ambient capability CAP_CHOWN: "* ]]
+	[[ "${output}" == *"CapAmb:	0000000000000020"* ]]
+}

vendor/github.com/moby/sys/capability/CHANGELOG.md

@@ -0,0 +1,124 @@
+# Changelog
+This file documents all notable changes made to this project since the initial fork
+from https://github.com/syndtr/gocapability/commit/42c35b4376354fd5.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## [0.4.0] - 2024-11-11
+
+### Added
+* New separate API for ambient ([GetAmbient], [SetAmbient], [ResetAmbient])
+  and bound ([GetBound], [DropBound]) capabilities, modelled after libcap. (#176)
+
+### Fixed
+* [Apply] now returns an error if called for non-zero `pid`. Before this change,
+  it could silently change some capabilities of the current process, instead of
+  the one identified by the `pid`. (#168, #174)
+* Fixed tests that change capabilities to be run in a separate process. (#173)
+* Other improvements in tests. (#169, #170)
+
+### Changed
+* Use raw syscalls (which are slightly faster). (#176)
+* Most tests are now limited to testing the public API of the package. (#162)
+* Simplify parsing /proc/*pid*/status, add a test case. (#162)
+* Optimize the number of syscall to set ambient capabilities in Apply
+  by clearing them first; add a test case. (#163, #164)
+* Better documentation for [Apply], [NewFile], [NewFile2], [NewPid], [NewPid2]. (#175)
+
+### Removed
+* `.golangci.yml` and `.codespellrc` are no longer part of the package. (#158)
+
+## [0.3.0] - 2024-09-25
+
+### Added
+* Added [ListKnown] and [ListSupported] functions. (#153)
+* [LastCap] is now available on non-Linux platforms (where it returns an error). (#152)
+
+### Changed
+* [List] is now deprecated in favor of [ListKnown] and [ListSupported]. (#153)
+
+### Fixed
+* Various documentation improvements. (#151)
+* Fix "generated code" comment. (#153)
+
+## [0.2.0] - 2024-09-16
+
+This is the first release after the move to a new home in
+github.com/moby/sys/capability.
+
+### Fixed
+ * Fixed URLs in documentation to reflect the new home.
+
+## [0.1.1] - 2024-08-01
+
+This is a maintenance release, fixing a few minor issues.
+
+### Fixed
+ * Fixed future kernel compatibility, for real this time. [#11]
+ * Fixed [LastCap] to be a function. [#12]
+
+## [0.1.0] - 2024-07-31
+
+This is an initial release since the fork.
+
+### Breaking changes
+
+ * The `CAP_LAST_CAP` variable is removed; users need to modify the code to
+   use [LastCap] to get the value. [#6]
+ * The code now requires Go >= 1.21.
+
+### Added
+ * `go.mod` and `go.sum` files. [#2]
+ * New [LastCap] function. [#6]
+ * Basic CI using GHA infra. [#8], [#9]
+ * README and CHANGELOG. [#10]
+
+### Fixed
+ * Fixed ambient capabilities error handling in [Apply]. [#3]
+ * Fixed future kernel compatibility. [#1]
+ * Fixed various linter warnings. [#4], [#7]
+
+### Changed
+ * Go build tags changed from old-style (`+build`) to new Go 1.17+ style (`go:build`). [#2]
+
+### Removed
+ * Removed support for capabilities v1 and v2. [#1]
+ * Removed init function so programs that use this package start faster. [#6]
+ * Removed `CAP_LAST_CAP` (use [LastCap] instead). [#6]
+
+<!-- Doc links (please keep sorted). -->
+[Apply]: https://pkg.go.dev/github.com/moby/sys/capability#Capabilities.Apply
+[DropBound]: https://pkg.go.dev/github.com/moby/sys/capability#DropBound
+[GetAmbient]: https://pkg.go.dev/github.com/moby/sys/capability#GetAmbient
+[GetBound]: https://pkg.go.dev/github.com/moby/sys/capability#GetBound
+[LastCap]: https://pkg.go.dev/github.com/moby/sys/capability#LastCap
+[ListKnown]: https://pkg.go.dev/github.com/moby/sys/capability#ListKnown
+[ListSupported]: https://pkg.go.dev/github.com/moby/sys/capability#ListSupported
+[List]: https://pkg.go.dev/github.com/moby/sys/capability#List
+[NewFile2]: https://pkg.go.dev/github.com/moby/sys/capability#NewFile2
+[NewFile]: https://pkg.go.dev/github.com/moby/sys/capability#NewFile
+[NewPid2]: https://pkg.go.dev/github.com/moby/sys/capability#NewPid2
+[NewPid]: https://pkg.go.dev/github.com/moby/sys/capability#NewPid
+[ResetAmbient]: https://pkg.go.dev/github.com/moby/sys/capability#ResetAmbient
+[SetAmbient]: https://pkg.go.dev/github.com/moby/sys/capability#SetAmbient
+
+<!-- Minor releases. -->
+[0.4.0]: https://github.com/moby/sys/releases/tag/capability%2Fv0.4.0
+[0.3.0]: https://github.com/moby/sys/releases/tag/capability%2Fv0.3.0
+[0.2.0]: https://github.com/moby/sys/releases/tag/capability%2Fv0.2.0
+[0.1.1]: https://github.com/kolyshkin/capability/compare/v0.1.0...v0.1.1
+[0.1.0]: https://github.com/kolyshkin/capability/compare/42c35b4376354fd5...v0.1.0
+
+<!-- PRs in 0.1.x releases. -->
+[#1]: https://github.com/kolyshkin/capability/pull/1
+[#2]: https://github.com/kolyshkin/capability/pull/2
+[#3]: https://github.com/kolyshkin/capability/pull/3
+[#4]: https://github.com/kolyshkin/capability/pull/4
+[#6]: https://github.com/kolyshkin/capability/pull/6
+[#7]: https://github.com/kolyshkin/capability/pull/7
+[#8]: https://github.com/kolyshkin/capability/pull/8
+[#9]: https://github.com/kolyshkin/capability/pull/9
+[#10]: https://github.com/kolyshkin/capability/pull/10
+[#11]: https://github.com/kolyshkin/capability/pull/11
+[#12]: https://github.com/kolyshkin/capability/pull/12

vendor/github.com/moby/sys/capability/LICENSE

@@ -1,3 +1,4 @@
+Copyright 2023 The Capability Authors.
 Copyright 2013 Suryandaru Triandana <syndtr@gmail.com>
 All rights reserved.
 

vendor/github.com/moby/sys/capability/README.md

@@ -0,0 +1,13 @@
+This is a fork of (apparently no longer maintained)
+https://github.com/syndtr/gocapability package. It provides basic primitives to
+work with [Linux capabilities][capabilities(7)].
+
+For changes, see [CHANGELOG.md](./CHANGELOG.md).
+
+[![Go Reference](https://pkg.go.dev/badge/github.com/moby/sys/capability/capability.svg)](https://pkg.go.dev/github.com/moby/sys/capability)
+
+## Alternatives
+
+ * https://pkg.go.dev/kernel.org/pub/linux/libs/security/libcap/cap
+
+[capabilities(7)]: https://man7.org/linux/man-pages/man7/capabilities.7.html

vendor/github.com/moby/sys/capability/capability.go

@@ -0,0 +1,176 @@
+// Copyright 2023 The Capability Authors.
+// Copyright 2013 Suryandaru Triandana <syndtr@gmail.com>
+// All rights reserved.
+//
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package capability provides utilities for manipulating POSIX capabilities.
+package capability
+
+type Capabilities interface {
+	// Get check whether a capability present in the given
+	// capabilities set. The 'which' value should be one of EFFECTIVE,
+	// PERMITTED, INHERITABLE, BOUNDING or AMBIENT.
+	Get(which CapType, what Cap) bool
+
+	// Empty check whether all capability bits of the given capabilities
+	// set are zero. The 'which' value should be one of EFFECTIVE,
+	// PERMITTED, INHERITABLE, BOUNDING or AMBIENT.
+	Empty(which CapType) bool
+
+	// Full check whether all capability bits of the given capabilities
+	// set are one. The 'which' value should be one of EFFECTIVE,
+	// PERMITTED, INHERITABLE, BOUNDING or AMBIENT.
+	Full(which CapType) bool
+
+	// Set sets capabilities of the given capabilities sets. The
+	// 'which' value should be one or combination (OR'ed) of EFFECTIVE,
+	// PERMITTED, INHERITABLE, BOUNDING or AMBIENT.
+	Set(which CapType, caps ...Cap)
+
+	// Unset unsets capabilities of the given capabilities sets. The
+	// 'which' value should be one or combination (OR'ed) of EFFECTIVE,
+	// PERMITTED, INHERITABLE, BOUNDING or AMBIENT.
+	Unset(which CapType, caps ...Cap)
+
+	// Fill sets all bits of the given capabilities kind to one. The
+	// 'kind' value should be one or combination (OR'ed) of CAPS,
+	// BOUNDS or AMBS.
+	Fill(kind CapType)
+
+	// Clear sets all bits of the given capabilities kind to zero. The
+	// 'kind' value should be one or combination (OR'ed) of CAPS,
+	// BOUNDS or AMBS.
+	Clear(kind CapType)
+
+	// String return current capabilities state of the given capabilities
+	// set as string. The 'which' value should be one of EFFECTIVE,
+	// PERMITTED, INHERITABLE BOUNDING or AMBIENT
+	StringCap(which CapType) string
+
+	// String return current capabilities state as string.
+	String() string
+
+	// Load load actual capabilities value. This will overwrite all
+	// outstanding changes.
+	Load() error
+
+	// Apply apply the capabilities settings, so all changes made by
+	// [Set], [Unset], [Fill], or [Clear] will take effect.
+	Apply(kind CapType) error
+}
+
+// NewPid initializes a new [Capabilities] object for given pid when
+// it is nonzero, or for the current process if pid is 0.
+//
+// Deprecated: replace with [NewPid2] followed by optional [Capabilities.Load]
+// (only if needed). For example, replace:
+//
+//	c, err := NewPid(0)
+//	if err != nil {
+//		return err
+//	}
+//
+// with:
+//
+//	c, err := NewPid2(0)
+//	if err != nil {
+//		return err
+//	}
+//	err = c.Load()
+//	if err != nil {
+//		return err
+//	}
+func NewPid(pid int) (Capabilities, error) {
+	c, err := newPid(pid)
+	if err != nil {
+		return c, err
+	}
+	err = c.Load()
+	return c, err
+}
+
+// NewPid2 initializes a new [Capabilities] object for given pid when
+// it is nonzero, or for the current process if pid is 0. This
+// does not load the process's current capabilities; if needed,
+// call [Capabilities.Load].
+func NewPid2(pid int) (Capabilities, error) {
+	return newPid(pid)
+}
+
+// NewFile initializes a new Capabilities object for given file path.
+//
+// Deprecated: replace with [NewFile2] followed by optional [Capabilities.Load]
+// (only if needed). For example, replace:
+//
+//	c, err := NewFile(path)
+//	if err != nil {
+//		return err
+//	}
+//
+// with:
+//
+//	c, err := NewFile2(path)
+//	if err != nil {
+//		return err
+//	}
+//	err = c.Load()
+//	if err != nil {
+//		return err
+//	}
+func NewFile(path string) (Capabilities, error) {
+	c, err := newFile(path)
+	if err != nil {
+		return c, err
+	}
+	err = c.Load()
+	return c, err
+}
+
+// NewFile2 creates a new initialized [Capabilities] object for given
+// file path. This does not load the process's current capabilities;
+// if needed, call [Capabilities.Load].
+func NewFile2(path string) (Capabilities, error) {
+	return newFile(path)
+}
+
+// LastCap returns highest valid capability of the running kernel,
+// or an error if it can not be obtained.
+//
+// See also: [ListSupported].
+func LastCap() (Cap, error) {
+	return lastCap()
+}
+
+// GetAmbient determines if a specific ambient capability is raised in the
+// calling thread.
+func GetAmbient(c Cap) (bool, error) {
+	return getAmbient(c)
+}
+
+// SetAmbient raises or lowers specified ambient capabilities for the calling
+// thread. To complete successfully, the prevailing effective capability set
+// must have a raised CAP_SETPCAP. Further, to raise a specific ambient
+// capability the inheritable and permitted sets of the calling thread must
+// already contain the specified capability.
+func SetAmbient(raise bool, caps ...Cap) error {
+	return setAmbient(raise, caps...)
+}
+
+// ResetAmbient resets all of the ambient capabilities for the calling thread
+// to their lowered value.
+func ResetAmbient() error {
+	return resetAmbient()
+}
+
+// GetBound determines if a specific bounding capability is raised in the
+// calling thread.
+func GetBound(c Cap) (bool, error) {
+	return getBound(c)
+}
+
+// DropBound lowers the specified bounding set capability.
+func DropBound(caps ...Cap) error {
+	return dropBound(caps...)
+}

vendor/github.com/moby/sys/capability/capability_linux.go

@@ -1,8 +1,9 @@
-// Copyright (c) 2013, Suryandaru Triandana <syndtr@gmail.com>
+// Copyright 2023 The Capability Authors.
+// Copyright 2013 Suryandaru Triandana <syndtr@gmail.com>
 // All rights reserved.
 //
-// Use of this source code is governed by a BSD-style license that can be
+// Use of this source code is governed by a BSD-style
-// found in the LICENSE file.
+// license that can be found in the LICENSE file.
 
 package capability
 
@@ -12,62 +13,53 @@ import (
 	"fmt"
 	"io"
 	"os"
+	"strconv"
 	"strings"
+	"sync"
 	"syscall"
 )
 
-var errUnknownVers = errors.New("unknown capability version")
-
 const (
-	linuxCapVer1 = 0x19980330
+	linuxCapVer1 = 0x19980330 // No longer supported.
-	linuxCapVer2 = 0x20071026
+	linuxCapVer2 = 0x20071026 // No longer supported.
 	linuxCapVer3 = 0x20080522
 )
 
-var (
+var lastCap = sync.OnceValues(func() (Cap, error) {
-	capVers    uint32
-	capLastCap Cap
-)
-
-func init() {
-	var hdr capHeader
-	capget(&hdr, nil)
-	capVers = hdr.version
-
-	if initLastCap() == nil {
-		CAP_LAST_CAP = capLastCap
-		if capLastCap > 31 {
-			capUpperMask = (uint32(1) << (uint(capLastCap) - 31)) - 1
-		} else {
-			capUpperMask = 0
-		}
-	}
-}
-
-func initLastCap() error {
-	if capLastCap != 0 {
-		return nil
-	}
-
 	f, err := os.Open("/proc/sys/kernel/cap_last_cap")
 	if err != nil {
-		return err
+		return 0, err
 	}
-	defer f.Close()
 
-	var b []byte = make([]byte, 11)
+	buf := make([]byte, 11)
-	_, err = f.Read(b)
+	l, err := f.Read(buf)
+	f.Close()
 	if err != nil {
-		return err
+		return 0, err
 	}
+	buf = buf[:l]
 
-	fmt.Sscanf(string(b), "%d", &capLastCap)
+	last, err := strconv.Atoi(strings.TrimSpace(string(buf)))
+	if err != nil {
+		return 0, err
+	}
+	return Cap(last), nil
+})
 
-	return nil
+func capUpperMask() uint32 {
+	last, err := lastCap()
+	if err != nil || last < 32 {
+		return 0
+	}
+	return (uint32(1) << (uint(last) - 31)) - 1
 }
 
 func mkStringCap(c Capabilities, which CapType) (ret string) {
-	for i, first := Cap(0), true; i <= CAP_LAST_CAP; i++ {
+	last, err := lastCap()
+	if err != nil {
+		return ""
+	}
+	for i, first := Cap(0), true; i <= last; i++ {
 		if !c.Get(which, i) {
 			continue
 		}
@@ -98,136 +90,38 @@ func mkString(c Capabilities, max CapType) (ret string) {
 	return
 }
 
-func newPid(pid int) (c Capabilities, err error) {
+var capVersion = sync.OnceValues(func() (uint32, error) {
-	switch capVers {
+	var hdr capHeader
-	case linuxCapVer1:
+	err := capget(&hdr, nil)
-		p := new(capsV1)
+	return hdr.version, err
-		p.hdr.version = capVers
+})
-		p.hdr.pid = int32(pid)
+
-		c = p
+func newPid(pid int) (c Capabilities, retErr error) {
-	case linuxCapVer2, linuxCapVer3:
+	ver, err := capVersion()
-		p := new(capsV3)
+	if err != nil {
-		p.hdr.version = capVers
+		retErr = fmt.Errorf("unable to get capability version from the kernel: %w", err)
-		p.hdr.pid = int32(pid)
-		c = p
-	default:
-		err = errUnknownVers
 		return
 	}
-	return
+	switch ver {
-}
+	case linuxCapVer1, linuxCapVer2:
-
+		retErr = errors.New("old/unsupported capability version (kernel older than 2.6.26?)")
-type capsV1 struct {
+	default:
-	hdr  capHeader
+		// Either linuxCapVer3, or an unknown/future version (such as v4).
-	data capData
+		// In the latter case, we fall back to v3 as the latest version known
-}
+		// to this package, as kernel should be backward-compatible to v3.
-
+		p := new(capsV3)
-func (c *capsV1) Get(which CapType, what Cap) bool {
+		p.hdr.version = linuxCapVer3
-	if what > 32 {
+		p.hdr.pid = int32(pid)
-		return false
+		c = p
-	}
-
-	switch which {
-	case EFFECTIVE:
-		return (1<<uint(what))&c.data.effective != 0
-	case PERMITTED:
-		return (1<<uint(what))&c.data.permitted != 0
-	case INHERITABLE:
-		return (1<<uint(what))&c.data.inheritable != 0
-	}
-
-	return false
-}
-
-func (c *capsV1) getData(which CapType) (ret uint32) {
-	switch which {
-	case EFFECTIVE:
-		ret = c.data.effective
-	case PERMITTED:
-		ret = c.data.permitted
-	case INHERITABLE:
-		ret = c.data.inheritable
 	}
 	return
 }
 
-func (c *capsV1) Empty(which CapType) bool {
+func ignoreEINVAL(err error) error {
-	return c.getData(which) == 0
+	if errors.Is(err, syscall.EINVAL) {
-}
+		err = nil
-
-func (c *capsV1) Full(which CapType) bool {
-	return (c.getData(which) & 0x7fffffff) == 0x7fffffff
-}
-
-func (c *capsV1) Set(which CapType, caps ...Cap) {
-	for _, what := range caps {
-		if what > 32 {
-			continue
-		}
-
-		if which&EFFECTIVE != 0 {
-			c.data.effective |= 1 << uint(what)
-		}
-		if which&PERMITTED != 0 {
-			c.data.permitted |= 1 << uint(what)
-		}
-		if which&INHERITABLE != 0 {
-			c.data.inheritable |= 1 << uint(what)
-		}
 	}
-}
+	return err
-
-func (c *capsV1) Unset(which CapType, caps ...Cap) {
-	for _, what := range caps {
-		if what > 32 {
-			continue
-		}
-
-		if which&EFFECTIVE != 0 {
-			c.data.effective &= ^(1 << uint(what))
-		}
-		if which&PERMITTED != 0 {
-			c.data.permitted &= ^(1 << uint(what))
-		}
-		if which&INHERITABLE != 0 {
-			c.data.inheritable &= ^(1 << uint(what))
-		}
-	}
-}
-
-func (c *capsV1) Fill(kind CapType) {
-	if kind&CAPS == CAPS {
-		c.data.effective = 0x7fffffff
-		c.data.permitted = 0x7fffffff
-		c.data.inheritable = 0
-	}
-}
-
-func (c *capsV1) Clear(kind CapType) {
-	if kind&CAPS == CAPS {
-		c.data.effective = 0
-		c.data.permitted = 0
-		c.data.inheritable = 0
-	}
-}
-
-func (c *capsV1) StringCap(which CapType) (ret string) {
-	return mkStringCap(c, which)
-}
-
-func (c *capsV1) String() (ret string) {
-	return mkString(c, BOUNDING)
-}
-
-func (c *capsV1) Load() (err error) {
-	return capget(&c.hdr, &c.data)
-}
-
-func (c *capsV1) Apply(kind CapType) error {
-	if kind&CAPS == CAPS {
-		return capset(&c.hdr, &c.data)
-	}
-	return nil
 }
 
 type capsV3 struct {
@@ -292,7 +186,8 @@ func (c *capsV3) Full(which CapType) bool {
 	if (data[0] & 0xffffffff) != 0xffffffff {
 		return false
 	}
-	return (data[1] & capUpperMask) == capUpperMask
+	mask := capUpperMask()
+	return (data[1] & mask) == mask
 }
 
 func (c *capsV3) Set(which CapType, caps ...Cap) {
@@ -401,15 +296,12 @@ func (c *capsV3) Load() (err error) {
 		return
 	}
 
-	var status_path string
+	path := "/proc/self/status"
-
+	if c.hdr.pid != 0 {
-	if c.hdr.pid == 0 {
+		path = fmt.Sprintf("/proc/%d/status", c.hdr.pid)
-		status_path = fmt.Sprintf("/proc/self/status")
-	} else {
-		status_path = fmt.Sprintf("/proc/%d/status", c.hdr.pid)
 	}
 
-	f, err := os.Open(status_path)
+	f, err := os.Open(path)
 	if err != nil {
 		return
 	}
@@ -422,12 +314,18 @@ func (c *capsV3) Load() (err error) {
 			}
 			break
 		}
-		if strings.HasPrefix(line, "CapB") {
+		if val, ok := strings.CutPrefix(line, "CapBnd:\t"); ok {
-			fmt.Sscanf(line[4:], "nd:  %08x%08x", &c.bounds[1], &c.bounds[0])
+			_, err = fmt.Sscanf(val, "%08x%08x", &c.bounds[1], &c.bounds[0])
+			if err != nil {
+				break
+			}
 			continue
 		}
-		if strings.HasPrefix(line, "CapA") {
+		if val, ok := strings.CutPrefix(line, "CapAmb:\t"); ok {
-			fmt.Sscanf(line[4:], "mb:  %08x%08x", &c.ambient[1], &c.ambient[0])
+			_, err = fmt.Sscanf(val, "%08x%08x", &c.ambient[1], &c.ambient[0])
+			if err != nil {
+				break
+			}
 			continue
 		}
 	}
@@ -436,26 +334,29 @@ func (c *capsV3) Load() (err error) {
 	return
 }
 
-func (c *capsV3) Apply(kind CapType) (err error) {
+func (c *capsV3) Apply(kind CapType) error {
+	if c.hdr.pid != 0 {
+		return errors.New("unable to modify capabilities of another process")
+	}
+	last, err := LastCap()
+	if err != nil {
+		return err
+	}
 	if kind&BOUNDS == BOUNDS {
 		var data [2]capData
 		err = capget(&c.hdr, &data[0])
 		if err != nil {
-			return
+			return err
 		}
 		if (1<<uint(CAP_SETPCAP))&data[0].effective != 0 {
-			for i := Cap(0); i <= CAP_LAST_CAP; i++ {
+			for i := Cap(0); i <= last; i++ {
 				if c.Get(BOUNDING, i) {
 					continue
 				}
-				err = prctl(syscall.PR_CAPBSET_DROP, uintptr(i), 0, 0, 0)
+				// Ignore EINVAL since the capability may not be supported in this system.
+				err = ignoreEINVAL(dropBound(i))
 				if err != nil {
-					// Ignore EINVAL since the capability may not be supported in this system.
+					return err
-					if errno, ok := err.(syscall.Errno); ok && errno == syscall.EINVAL {
-						err = nil
-						continue
-					}
-					return
 				}
 			}
 		}
@@ -464,26 +365,73 @@ func (c *capsV3) Apply(kind CapType) (err error) {
 	if kind&CAPS == CAPS {
 		err = capset(&c.hdr, &c.data[0])
 		if err != nil {
-			return
+			return err
 		}
 	}
 
 	if kind&AMBS == AMBS {
-		for i := Cap(0); i <= CAP_LAST_CAP; i++ {
+		// Ignore EINVAL as not supported on kernels before 4.3
-			action := pr_CAP_AMBIENT_LOWER
+		err = ignoreEINVAL(resetAmbient())
-			if c.Get(AMBIENT, i) {
+		if err != nil {
-				action = pr_CAP_AMBIENT_RAISE
+			return err
-			}
+		}
-			err := prctl(pr_CAP_AMBIENT, action, uintptr(i), 0, 0)
+		for i := Cap(0); i <= last; i++ {
-			// Ignore EINVAL as not supported on kernels before 4.3
+			if !c.Get(AMBIENT, i) {
-			if errno, ok := err.(syscall.Errno); ok && errno == syscall.EINVAL {
-				err = nil
 				continue
 			}
+			// Ignore EINVAL as not supported on kernels before 4.3
+			err = ignoreEINVAL(setAmbient(true, i))
+			if err != nil {
+				return err
+			}
 		}
 	}
 
-	return
+	return nil
+}
+
+func getAmbient(c Cap) (bool, error) {
+	res, err := prctlRetInt(pr_CAP_AMBIENT, pr_CAP_AMBIENT_IS_SET, uintptr(c))
+	if err != nil {
+		return false, err
+	}
+	return res > 0, nil
+}
+
+func setAmbient(raise bool, caps ...Cap) error {
+	op := pr_CAP_AMBIENT_RAISE
+	if !raise {
+		op = pr_CAP_AMBIENT_LOWER
+	}
+	for _, val := range caps {
+		err := prctl(pr_CAP_AMBIENT, op, uintptr(val))
+		if err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+func resetAmbient() error {
+	return prctl(pr_CAP_AMBIENT, pr_CAP_AMBIENT_CLEAR_ALL, 0)
+}
+
+func getBound(c Cap) (bool, error) {
+	res, err := prctlRetInt(syscall.PR_CAPBSET_READ, uintptr(c), 0)
+	if err != nil {
+		return false, err
+	}
+	return res > 0, nil
+}
+
+func dropBound(caps ...Cap) error {
+	for _, val := range caps {
+		err := prctl(syscall.PR_CAPBSET_DROP, uintptr(val), 0)
+		if err != nil {
+			return err
+		}
+	}
+	return nil
 }
 
 func newFile(path string) (c Capabilities, err error) {
@@ -547,7 +495,8 @@ func (c *capsFile) Full(which CapType) bool {
 	if (data[0] & 0xffffffff) != 0xffffffff {
 		return false
 	}
-	return (data[1] & capUpperMask) == capUpperMask
+	mask := capUpperMask()
+	return (data[1] & mask) == mask
 }
 
 func (c *capsFile) Set(which CapType, caps ...Cap) {

vendor/github.com/moby/sys/capability/capability_noop.go

@@ -0,0 +1,46 @@
+// Copyright 2023 The Capability Authors.
+// Copyright 2013 Suryandaru Triandana <syndtr@gmail.com>
+// All rights reserved.
+//
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+//go:build !linux
+
+package capability
+
+import "errors"
+
+var errNotSup = errors.New("not supported")
+
+func newPid(_ int) (Capabilities, error) {
+	return nil, errNotSup
+}
+
+func newFile(_ string) (Capabilities, error) {
+	return nil, errNotSup
+}
+
+func lastCap() (Cap, error) {
+	return -1, errNotSup
+}
+
+func getAmbient(_ Cap) (bool, error) {
+	return false, errNotSup
+}
+
+func setAmbient(_ bool, _ ...Cap) error {
+	return errNotSup
+}
+
+func resetAmbient() error {
+	return errNotSup
+}
+
+func getBound(_ Cap) (bool, error) {
+	return false, errNotSup
+}
+
+func dropBound(_ ...Cap) error {
+	return errNotSup
+}

vendor/github.com/moby/sys/capability/enum.go

@@ -1,11 +1,14 @@
-// Copyright (c) 2013, Suryandaru Triandana <syndtr@gmail.com>
+// Copyright 2024 The Capability Authors.
+// Copyright 2013 Suryandaru Triandana <syndtr@gmail.com>
 // All rights reserved.
 //
-// Use of this source code is governed by a BSD-style license that can be
+// Use of this source code is governed by a BSD-style
-// found in the LICENSE file.
+// license that can be found in the LICENSE file.
 
 package capability
 
+import "slices"
+
 type CapType uint
 
 func (c CapType) String() string {
@@ -301,9 +304,27 @@ const (
 	CAP_CHECKPOINT_RESTORE = Cap(40)
 )
 
-var (
+// List returns the list of all capabilities known to the package.
-	// Highest valid capability of the running kernel.
+//
-	CAP_LAST_CAP = Cap(63)
+// Deprecated: use [ListKnown] or [ListSupported] instead.
+func List() []Cap {
+	return ListKnown()
+}
 
-	capUpperMask = ^uint32(0)
+// ListKnown returns the list of all capabilities known to the package.
-)
+func ListKnown() []Cap {
+	return list()
+}
+
+// ListSupported returns the list of all capabilities known to the package,
+// except those that are not supported by the currently running Linux kernel.
+func ListSupported() ([]Cap, error) {
+	last, err := LastCap()
+	if err != nil {
+		return nil, err
+	}
+	return slices.DeleteFunc(list(), func(c Cap) bool {
+		// Remove caps not supported by the kernel.
+		return c > last
+	}), nil
+}

vendor/github.com/moby/sys/capability/enum_gen.go

@@ -1,4 +1,4 @@
-// generated file; DO NOT EDIT - use go generate in directory with source
+// Code generated by go generate; DO NOT EDIT.
 
 package capability
 
@@ -90,8 +90,7 @@ func (c Cap) String() string {
 	return "unknown"
 }
 
-// List returns list of all supported capabilities
+func list() []Cap {
-func List() []Cap {
 	return []Cap{
 		CAP_CHOWN,
 		CAP_DAC_OVERRIDE,

vendor/github.com/moby/sys/capability/syscall_linux.go

@@ -1,8 +1,9 @@
-// Copyright (c) 2013, Suryandaru Triandana <syndtr@gmail.com>
+// Copyright 2024 The Capability Authors.
+// Copyright 2013 Suryandaru Triandana <syndtr@gmail.com>
 // All rights reserved.
 //
-// Use of this source code is governed by a BSD-style license that can be
+// Use of this source code is governed by a BSD-style
-// found in the LICENSE file.
+// license that can be found in the LICENSE file.
 
 package capability
 
@@ -23,7 +24,7 @@ type capData struct {
 }
 
 func capget(hdr *capHeader, data *capData) (err error) {
-	_, _, e1 := syscall.Syscall(syscall.SYS_CAPGET, uintptr(unsafe.Pointer(hdr)), uintptr(unsafe.Pointer(data)), 0)
+	_, _, e1 := syscall.RawSyscall(syscall.SYS_CAPGET, uintptr(unsafe.Pointer(hdr)), uintptr(unsafe.Pointer(data)), 0)
 	if e1 != 0 {
 		err = e1
 	}
@@ -31,7 +32,7 @@ func capget(hdr *capHeader, data *capData) (err error) {
 }
 
 func capset(hdr *capHeader, data *capData) (err error) {
-	_, _, e1 := syscall.Syscall(syscall.SYS_CAPSET, uintptr(unsafe.Pointer(hdr)), uintptr(unsafe.Pointer(data)), 0)
+	_, _, e1 := syscall.RawSyscall(syscall.SYS_CAPSET, uintptr(unsafe.Pointer(hdr)), uintptr(unsafe.Pointer(data)), 0)
 	if e1 != 0 {
 		err = e1
 	}
@@ -47,14 +48,22 @@ const (
 	pr_CAP_AMBIENT_CLEAR_ALL = uintptr(4)
 )
 
-func prctl(option int, arg2, arg3, arg4, arg5 uintptr) (err error) {
+func prctl(option int, arg2, arg3 uintptr) (err error) {
-	_, _, e1 := syscall.Syscall6(syscall.SYS_PRCTL, uintptr(option), arg2, arg3, arg4, arg5, 0)
+	_, _, e1 := syscall.RawSyscall(syscall.SYS_PRCTL, uintptr(option), arg2, arg3)
 	if e1 != 0 {
 		err = e1
 	}
 	return
 }
 
+func prctlRetInt(option int, arg2, arg3 uintptr) (int, error) {
+	ret, _, err := syscall.RawSyscall(syscall.SYS_PRCTL, uintptr(option), arg2, arg3)
+	if err != 0 {
+		return 0, err
+	}
+	return int(ret), nil
+}
+
 const (
 	vfsXattrName = "security.capability"
 
@@ -79,9 +88,7 @@ type vfscapData struct {
 	version   int8
 }
 
-var (
+var _vfsXattrName *byte
-	_vfsXattrName *byte
-)
 
 func init() {
 	_vfsXattrName, _ = syscall.BytePtrFromString(vfsXattrName)
@@ -93,7 +100,7 @@ func getVfsCap(path string, dest *vfscapData) (err error) {
 	if err != nil {
 		return
 	}
-	r0, _, e1 := syscall.Syscall6(syscall.SYS_GETXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_vfsXattrName)), uintptr(unsafe.Pointer(dest)), vfscapDataSizeV2, 0, 0)
+	r0, _, e1 := syscall.RawSyscall6(syscall.SYS_GETXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_vfsXattrName)), uintptr(unsafe.Pointer(dest)), vfscapDataSizeV2, 0, 0)
 	if e1 != 0 {
 		if e1 == syscall.ENODATA {
 			dest.version = 2
@@ -146,7 +153,7 @@ func setVfsCap(path string, data *vfscapData) (err error) {
 	} else {
 		return syscall.EINVAL
 	}
-	_, _, e1 := syscall.Syscall6(syscall.SYS_SETXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_vfsXattrName)), uintptr(unsafe.Pointer(data)), size, 0, 0)
+	_, _, e1 := syscall.RawSyscall6(syscall.SYS_SETXATTR, uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(_vfsXattrName)), uintptr(unsafe.Pointer(data)), size, 0, 0)
 	if e1 != 0 {
 		err = e1
 	}

vendor/github.com/syndtr/gocapability/capability/capability.go

@@ -1,133 +0,0 @@
-// Copyright (c) 2013, Suryandaru Triandana <syndtr@gmail.com>
-// All rights reserved.
-//
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-// Package capability provides utilities for manipulating POSIX capabilities.
-package capability
-
-type Capabilities interface {
-	// Get check whether a capability present in the given
-	// capabilities set. The 'which' value should be one of EFFECTIVE,
-	// PERMITTED, INHERITABLE, BOUNDING or AMBIENT.
-	Get(which CapType, what Cap) bool
-
-	// Empty check whether all capability bits of the given capabilities
-	// set are zero. The 'which' value should be one of EFFECTIVE,
-	// PERMITTED, INHERITABLE, BOUNDING or AMBIENT.
-	Empty(which CapType) bool
-
-	// Full check whether all capability bits of the given capabilities
-	// set are one. The 'which' value should be one of EFFECTIVE,
-	// PERMITTED, INHERITABLE, BOUNDING or AMBIENT.
-	Full(which CapType) bool
-
-	// Set sets capabilities of the given capabilities sets. The
-	// 'which' value should be one or combination (OR'ed) of EFFECTIVE,
-	// PERMITTED, INHERITABLE, BOUNDING or AMBIENT.
-	Set(which CapType, caps ...Cap)
-
-	// Unset unsets capabilities of the given capabilities sets. The
-	// 'which' value should be one or combination (OR'ed) of EFFECTIVE,
-	// PERMITTED, INHERITABLE, BOUNDING or AMBIENT.
-	Unset(which CapType, caps ...Cap)
-
-	// Fill sets all bits of the given capabilities kind to one. The
-	// 'kind' value should be one or combination (OR'ed) of CAPS,
-	// BOUNDS or AMBS.
-	Fill(kind CapType)
-
-	// Clear sets all bits of the given capabilities kind to zero. The
-	// 'kind' value should be one or combination (OR'ed) of CAPS,
-	// BOUNDS or AMBS.
-	Clear(kind CapType)
-
-	// String return current capabilities state of the given capabilities
-	// set as string. The 'which' value should be one of EFFECTIVE,
-	// PERMITTED, INHERITABLE BOUNDING or AMBIENT
-	StringCap(which CapType) string
-
-	// String return current capabilities state as string.
-	String() string
-
-	// Load load actual capabilities value. This will overwrite all
-	// outstanding changes.
-	Load() error
-
-	// Apply apply the capabilities settings, so all changes will take
-	// effect.
-	Apply(kind CapType) error
-}
-
-// NewPid initializes a new Capabilities object for given pid when
-// it is nonzero, or for the current process if pid is 0.
-//
-// Deprecated: Replace with NewPid2.  For example, replace:
-//
-//    c, err := NewPid(0)
-//    if err != nil {
-//      return err
-//    }
-//
-// with:
-//
-//    c, err := NewPid2(0)
-//    if err != nil {
-//      return err
-//    }
-//    err = c.Load()
-//    if err != nil {
-//      return err
-//    }
-func NewPid(pid int) (Capabilities, error) {
-	c, err := newPid(pid)
-	if err != nil {
-		return c, err
-	}
-	err = c.Load()
-	return c, err
-}
-
-// NewPid2 initializes a new Capabilities object for given pid when
-// it is nonzero, or for the current process if pid is 0.  This
-// does not load the process's current capabilities; to do that you
-// must call Load explicitly.
-func NewPid2(pid int) (Capabilities, error) {
-	return newPid(pid)
-}
-
-// NewFile initializes a new Capabilities object for given file path.
-//
-// Deprecated: Replace with NewFile2.  For example, replace:
-//
-//    c, err := NewFile(path)
-//    if err != nil {
-//      return err
-//    }
-//
-// with:
-//
-//    c, err := NewFile2(path)
-//    if err != nil {
-//      return err
-//    }
-//    err = c.Load()
-//    if err != nil {
-//      return err
-//    }
-func NewFile(path string) (Capabilities, error) {
-	c, err := newFile(path)
-	if err != nil {
-		return c, err
-	}
-	err = c.Load()
-	return c, err
-}
-
-// NewFile2 creates a new initialized Capabilities object for given
-// file path.  This does not load the process's current capabilities;
-// to do that you must call Load explicitly.
-func NewFile2(path string) (Capabilities, error) {
-	return newFile(path)
-}

vendor/github.com/syndtr/gocapability/capability/capability_noop.go

@@ -1,19 +0,0 @@
-// Copyright (c) 2013, Suryandaru Triandana <syndtr@gmail.com>
-// All rights reserved.
-//
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-// +build !linux
-
-package capability
-
-import "errors"
-
-func newPid(pid int) (Capabilities, error) {
-	return nil, errors.New("not supported")
-}
-
-func newFile(path string) (Capabilities, error) {
-	return nil, errors.New("not supported")
-}

vendor/modules.txt

@@ -34,6 +34,9 @@ github.com/docker/go-units
 # github.com/godbus/dbus/v5 v5.1.0
 ## explicit; go 1.12
 github.com/godbus/dbus/v5
+# github.com/moby/sys/capability v0.4.0
+## explicit; go 1.21
+github.com/moby/sys/capability
 # github.com/moby/sys/mountinfo v0.7.2
 ## explicit; go 1.17
 github.com/moby/sys/mountinfo
@@ -65,9 +68,6 @@ github.com/seccomp/libseccomp-golang
 ## explicit; go 1.13
 github.com/sirupsen/logrus
 github.com/sirupsen/logrus/hooks/test
-# github.com/syndtr/gocapability v0.0.0-20200815063812-42c35b437635
-## explicit
-github.com/syndtr/gocapability/capability
 # github.com/urfave/cli v1.22.16
 ## explicit; go 1.11
 github.com/urfave/cli