container/initoverlay: check path equivalence by value
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Fixes regression introduced while integrating Absolute.

Signed-off-by: Ophestra <cat@gensokyo.uk>
This commit is contained in:
Ophestra 2025-08-20 17:33:15 +09:00
parent 97ab24feef
commit 696e593898
Signed by: cat
SSH Key Fingerprint: SHA256:wr6yH7sDDbUFi81k/GsIGwpM3O2QrwqYlLF26CcJa4w
2 changed files with 115 additions and 5 deletions

View File

@ -163,11 +163,10 @@ func (o *MountOverlayOp) apply(state *setupState) error {
func (o *MountOverlayOp) Is(op Op) bool { func (o *MountOverlayOp) Is(op Op) bool {
vo, ok := op.(*MountOverlayOp) vo, ok := op.(*MountOverlayOp)
return ok && return ok && ((o == nil && vo == nil) || (o != nil && vo != nil &&
o.Target == vo.Target && o.Target != nil && vo.Target != nil && o.Target.Is(vo.Target) &&
slices.Equal(o.Lower, vo.Lower) && slices.EqualFunc(o.Lower, vo.Lower, func(a *Absolute, v *Absolute) bool { return a.Is(v) }) &&
o.Upper == vo.Upper && o.Upper.Is(vo.Upper) && o.Work.Is(vo.Work)))
o.Work == vo.Work
} }
func (*MountOverlayOp) prefix() string { return "mounting" } func (*MountOverlayOp) prefix() string { return "mounting" }
func (o *MountOverlayOp) String() string { func (o *MountOverlayOp) String() string {

View File

@ -0,0 +1,111 @@
package container
import "testing"
func TestMountOverlayOp(t *testing.T) {
checkOpsBuilder(t, []opsBuilderTestCase{
{"full", new(Ops).Overlay(
MustAbs("/nix/store"),
MustAbs("/mnt-root/nix/.rw-store/upper"),
MustAbs("/mnt-root/nix/.rw-store/work"),
MustAbs("/mnt-root/nix/.ro-store"),
), Ops{
&MountOverlayOp{
Target: MustAbs("/nix/store"),
Lower: []*Absolute{MustAbs("/mnt-root/nix/.ro-store")},
Upper: MustAbs("/mnt-root/nix/.rw-store/upper"),
Work: MustAbs("/mnt-root/nix/.rw-store/work"),
},
}},
{"ephemeral", new(Ops).OverlayEphemeral(MustAbs("/nix/store"), MustAbs("/mnt-root/nix/.ro-store")), Ops{
&MountOverlayOp{
Target: MustAbs("/nix/store"),
Lower: []*Absolute{MustAbs("/mnt-root/nix/.ro-store")},
Upper: MustAbs("/"),
},
}},
{"readonly", new(Ops).OverlayReadonly(MustAbs("/nix/store"), MustAbs("/mnt-root/nix/.ro-store")), Ops{
&MountOverlayOp{
Target: MustAbs("/nix/store"),
Lower: []*Absolute{MustAbs("/mnt-root/nix/.ro-store")},
},
}},
})
checkOpIs(t, []opIsTestCase{
{"zero", new(MountOverlayOp), new(MountOverlayOp), false},
{"differs target", &MountOverlayOp{
Target: MustAbs("/nix/store/differs"),
Lower: []*Absolute{MustAbs("/mnt-root/nix/.ro-store")},
Upper: MustAbs("/mnt-root/nix/.rw-store/upper"),
Work: MustAbs("/mnt-root/nix/.rw-store/work"),
}, &MountOverlayOp{
Target: MustAbs("/nix/store"),
Lower: []*Absolute{MustAbs("/mnt-root/nix/.ro-store")},
Upper: MustAbs("/mnt-root/nix/.rw-store/upper"),
Work: MustAbs("/mnt-root/nix/.rw-store/work")}, false},
{"differs lower", &MountOverlayOp{
Target: MustAbs("/nix/store"),
Lower: []*Absolute{MustAbs("/mnt-root/nix/.ro-store/differs")},
Upper: MustAbs("/mnt-root/nix/.rw-store/upper"),
Work: MustAbs("/mnt-root/nix/.rw-store/work"),
}, &MountOverlayOp{
Target: MustAbs("/nix/store"),
Lower: []*Absolute{MustAbs("/mnt-root/nix/.ro-store")},
Upper: MustAbs("/mnt-root/nix/.rw-store/upper"),
Work: MustAbs("/mnt-root/nix/.rw-store/work")}, false},
{"differs upper", &MountOverlayOp{
Target: MustAbs("/nix/store"),
Lower: []*Absolute{MustAbs("/mnt-root/nix/.ro-store")},
Upper: MustAbs("/mnt-root/nix/.rw-store/upper/differs"),
Work: MustAbs("/mnt-root/nix/.rw-store/work"),
}, &MountOverlayOp{
Target: MustAbs("/nix/store"),
Lower: []*Absolute{MustAbs("/mnt-root/nix/.ro-store")},
Upper: MustAbs("/mnt-root/nix/.rw-store/upper"),
Work: MustAbs("/mnt-root/nix/.rw-store/work")}, false},
{"differs work", &MountOverlayOp{
Target: MustAbs("/nix/store"),
Lower: []*Absolute{MustAbs("/mnt-root/nix/.ro-store")},
Upper: MustAbs("/mnt-root/nix/.rw-store/upper"),
Work: MustAbs("/mnt-root/nix/.rw-store/work/differs"),
}, &MountOverlayOp{
Target: MustAbs("/nix/store"),
Lower: []*Absolute{MustAbs("/mnt-root/nix/.ro-store")},
Upper: MustAbs("/mnt-root/nix/.rw-store/upper"),
Work: MustAbs("/mnt-root/nix/.rw-store/work")}, false},
{"equals ro", &MountOverlayOp{
Target: MustAbs("/nix/store"),
Lower: []*Absolute{MustAbs("/mnt-root/nix/.ro-store")},
}, &MountOverlayOp{
Target: MustAbs("/nix/store"),
Lower: []*Absolute{MustAbs("/mnt-root/nix/.ro-store")}}, true},
{"equals", &MountOverlayOp{
Target: MustAbs("/nix/store"),
Lower: []*Absolute{MustAbs("/mnt-root/nix/.ro-store")},
Upper: MustAbs("/mnt-root/nix/.rw-store/upper"),
Work: MustAbs("/mnt-root/nix/.rw-store/work"),
}, &MountOverlayOp{
Target: MustAbs("/nix/store"),
Lower: []*Absolute{MustAbs("/mnt-root/nix/.ro-store")},
Upper: MustAbs("/mnt-root/nix/.rw-store/upper"),
Work: MustAbs("/mnt-root/nix/.rw-store/work")}, true},
})
checkOpMeta(t, []opMetaTestCase{
{"nix", &MountOverlayOp{
Target: MustAbs("/nix/store"),
Lower: []*Absolute{MustAbs("/mnt-root/nix/.ro-store")},
Upper: MustAbs("/mnt-root/nix/.rw-store/upper"),
Work: MustAbs("/mnt-root/nix/.rw-store/work"),
}, "mounting", `overlay on "/nix/store" with 1 layers`},
})
}