mirror of
https://github.com/roddhjav/apparmor.d.git
synced 2024-12-27 07:27:24 +01:00
102 lines
2.1 KiB
Go
102 lines
2.1 KiB
Go
// apparmor.d - Full set of apparmor profiles
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// Copyright (C) 2021-2024 Alexandre Pujol <alexandre@pujol.io>
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// SPDX-License-Identifier: GPL-2.0-only
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package aa
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import "fmt"
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const PIVOTROOT Kind = "pivot_root"
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type PivotRoot struct {
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Base
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Qualifier
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OldRoot string
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NewRoot string
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TargetProfile string
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}
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func newPivotRoot(q Qualifier, rule rule) (Rule, error) {
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newroot, target := "", ""
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r := rule.GetSlice()
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if len(r) > 0 {
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if r[0] != tokARROW {
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newroot = r[0]
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r = r[1:]
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}
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if len(r) == 2 {
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if r[0] != tokARROW {
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return nil, fmt.Errorf("missing '%s' in rule: %s", tokARROW, rule)
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}
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target = r[1]
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}
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}
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return &PivotRoot{
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Base: newBase(rule),
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Qualifier: q,
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OldRoot: rule.GetValuesAsString("oldroot"),
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NewRoot: newroot,
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TargetProfile: target,
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}, nil
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}
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func newPivotRootFromLog(log map[string]string) Rule {
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return &PivotRoot{
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Base: newBaseFromLog(log),
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Qualifier: newQualifierFromLog(log),
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OldRoot: log["srcname"],
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NewRoot: log["name"],
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TargetProfile: "",
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}
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}
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func (r *PivotRoot) Kind() Kind {
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return PIVOTROOT
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}
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func (r *PivotRoot) Constraint() Constraint {
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return BlockRule
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}
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func (r *PivotRoot) String() string {
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return renderTemplate(r.Kind(), r)
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}
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func (r *PivotRoot) Validate() error {
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return nil
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}
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func (r *PivotRoot) Compare(other Rule) int {
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o, _ := other.(*PivotRoot)
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if res := compare(r.OldRoot, o.OldRoot); res != 0 {
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return res
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}
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if res := compare(r.NewRoot, o.NewRoot); res != 0 {
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return res
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}
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if res := compare(r.TargetProfile, o.TargetProfile); res != 0 {
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return res
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}
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return r.Qualifier.Compare(o.Qualifier)
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}
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func (r *PivotRoot) Merge(other Rule) bool {
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return false // Never merge pivot root
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}
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func (r *PivotRoot) Lengths() []int {
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return []int{
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r.Qualifier.getLenAudit(),
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r.Qualifier.getLenAccess(),
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length("oldroot=", r.OldRoot),
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length("", r.NewRoot),
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length("", r.TargetProfile),
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}
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}
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func (r *PivotRoot) setPaddings(max []int) {
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r.Paddings = append(r.Qualifier.setPaddings(max[:2]), setPaddings(
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max[2:], []string{"oldroot=", "", ""},
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[]any{r.OldRoot, r.NewRoot, r.TargetProfile})...,
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)
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}
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