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container: use more reliable nonexistence
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Browse Source 
Signed-off-by: Ophestra <cat@gensokyo.uk>
This commit is contained in:
Ophestra 2025-07-18 23:18:26 +09:00
parent 6ba19a7ba5
commit 9d7a19d162
Signed by: cat
SSH Key Fingerprint: SHA256:gQ67O0enBZ7UdZypgtspB2FDM1g3GVw8nX0XSdcFw8Q
6 changed files with 24 additions and 14 deletions
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6
container/container.go
View File

@ -17,6 +17,12 @@ import (
"hakurei.app/container/seccomp"
)
const (
// Nonexistent is a path that cannot exist.
// /proc is chosen because a system with covered /proc is unsupported by this package.
Nonexistent = "/proc/nonexistent"
)
type (
// Container represents a container environment being prepared or run.
// None of [Container] methods are safe for concurrent use.

2
container/seccomp/libseccomp_test.go
View File

@ -79,7 +79,7 @@ func TestExport(t *testing.T) {
func BenchmarkExport(b *testing.B) {
buf := make([]byte, 8)
for i := 0; i < b.N; i++ {
for b.Loop() {
e := New(
Preset(PresetExt|PresetDenyNS|PresetDenyTTY|PresetDenyDevel|PresetLinux32,
AllowMultiarch|AllowCAN|AllowBluetooth),

3
helper/cmd_test.go
View File

@ -8,12 +8,13 @@ import (
"os/exec"
"testing"
"hakurei.app/container"
"hakurei.app/helper"
)
func TestCmd(t *testing.T) {
t.Run("start non-existent helper path", func(t *testing.T) {
h := helper.NewDirect(t.Context(), "/proc/nonexistent", argsWt, false, argF, nil, nil)
h := helper.NewDirect(t.Context(), container.Nonexistent, argsWt, false, argF, nil, nil)
if err := h.Start(); !errors.Is(err, os.ErrNotExist) {
t.Errorf("Start: error = %v, wantErr %v",

2
helper/container_test.go
View File

@ -15,7 +15,7 @@ import (
func TestContainer(t *testing.T) {
t.Run("start empty container", func(t *testing.T) {
h := helper.New(t.Context(), "/nonexistent", argsWt, false, argF, nil, nil)
h := helper.New(t.Context(), container.Nonexistent, argsWt, false, argF, nil, nil)
wantErr := "sandbox: starting an empty container"
if err := h.Start(); err == nil || err.Error() != wantErr {

19
system/acl_test.go
View File

@ -3,6 +3,7 @@ package system
import (
"testing"
"hakurei.app/container"
"hakurei.app/system/acl"
)
@ -52,19 +53,19 @@ func TestACLString(t *testing.T) {
et Enablement
perms []acl.Perm
}{
{`--- type: process path: "/nonexistent"`, Process, []acl.Perm{}},
{`r-- type: user path: "/nonexistent"`, User, []acl.Perm{acl.Read}},
{`-w- type: wayland path: "/nonexistent"`, EWayland, []acl.Perm{acl.Write}},
{`--x type: x11 path: "/nonexistent"`, EX11, []acl.Perm{acl.Execute}},
{`rw- type: dbus path: "/nonexistent"`, EDBus, []acl.Perm{acl.Read, acl.Write}},
{`r-x type: pulseaudio path: "/nonexistent"`, EPulse, []acl.Perm{acl.Read, acl.Execute}},
{`rwx type: user path: "/nonexistent"`, User, []acl.Perm{acl.Read, acl.Write, acl.Execute}},
{`rwx type: process path: "/nonexistent"`, Process, []acl.Perm{acl.Read, acl.Write, acl.Write, acl.Execute}},
{`--- type: process path: "/proc/nonexistent"`, Process, []acl.Perm{}},
{`r-- type: user path: "/proc/nonexistent"`, User, []acl.Perm{acl.Read}},
{`-w- type: wayland path: "/proc/nonexistent"`, EWayland, []acl.Perm{acl.Write}},
{`--x type: x11 path: "/proc/nonexistent"`, EX11, []acl.Perm{acl.Execute}},
{`rw- type: dbus path: "/proc/nonexistent"`, EDBus, []acl.Perm{acl.Read, acl.Write}},
{`r-x type: pulseaudio path: "/proc/nonexistent"`, EPulse, []acl.Perm{acl.Read, acl.Execute}},
{`rwx type: user path: "/proc/nonexistent"`, User, []acl.Perm{acl.Read, acl.Write, acl.Execute}},
{`rwx type: process path: "/proc/nonexistent"`, Process, []acl.Perm{acl.Read, acl.Write, acl.Write, acl.Execute}},
}
for _, tc := range testCases {
t.Run(tc.want, func(t *testing.T) {
a := &ACL{et: tc.et, perms: tc.perms, path: "/nonexistent"}
a := &ACL{et: tc.et, perms: tc.perms, path: container.Nonexistent}
if got := a.String(); got != tc.want {
t.Errorf("String() = %v, want %v",
got, tc.want)

6
system/mkdir_test.go
View File

@ -3,6 +3,8 @@ package system
import (
"os"
"testing"
"hakurei.app/container"
)
func TestEnsure(t *testing.T) {
@ -60,11 +62,11 @@ func TestMkdirString(t *testing.T) {
t.Run(tc.want, func(t *testing.T) {
m := &Mkdir{
et: tc.et,
path: "/nonexistent",
path: container.Nonexistent,
perm: 0701,
ephemeral: tc.ephemeral,
}
want := "mode: " + os.FileMode(0701).String() + " type: " + tc.want + " path: \"/nonexistent\""
want := "mode: " + os.FileMode(0701).String() + " type: " + tc.want + ` path: "/proc/nonexistent"`
if got := m.String(); got != want {
t.Errorf("String() = %v, want %v", got, want)
}