Ophestra
ddfb865e2d
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This allows tests to stub all kernel behaviour, like in the container package. Signed-off-by: Ophestra <cat@gensokyo.uk>
68 lines
1.6 KiB
Go
68 lines
1.6 KiB
Go
package system
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import (
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"errors"
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"fmt"
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"os"
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"slices"
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"hakurei.app/system/acl"
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)
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// UpdatePerm appends [ACLUpdateOp] to [I] with the [Process] criteria.
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func (sys *I) UpdatePerm(path string, perms ...acl.Perm) *I {
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sys.UpdatePermType(Process, path, perms...)
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return sys
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}
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// UpdatePermType appends [ACLUpdateOp] to [I].
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func (sys *I) UpdatePermType(et Enablement, path string, perms ...acl.Perm) *I {
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sys.ops = append(sys.ops, &ACLUpdateOp{et, path, perms})
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return sys
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}
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// ACLUpdateOp maintains [acl.Perms] on a file until its [Enablement] is no longer satisfied.
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type ACLUpdateOp struct {
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et Enablement
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path string
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perms acl.Perms
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}
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func (a *ACLUpdateOp) Type() Enablement { return a.et }
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func (a *ACLUpdateOp) apply(sys *I) error {
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sys.verbose("applying ACL", a)
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return newOpError("acl", sys.aclUpdate(a.path, sys.uid, a.perms...), false)
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}
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func (a *ACLUpdateOp) revert(sys *I, ec *Criteria) error {
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if ec.hasType(a.Type()) {
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sys.verbose("stripping ACL", a)
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err := sys.aclUpdate(a.path, sys.uid)
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if errors.Is(err, os.ErrNotExist) {
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// the ACL is effectively stripped if the file no longer exists
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sys.verbosef("target of ACL %s no longer exists", a)
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err = nil
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}
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return newOpError("acl", err, true)
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} else {
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sys.verbose("skipping ACL", a)
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return nil
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}
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}
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func (a *ACLUpdateOp) Is(o Op) bool {
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target, ok := o.(*ACLUpdateOp)
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return ok && a != nil && target != nil &&
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a.et == target.et &&
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a.path == target.path &&
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slices.Equal(a.perms, target.perms)
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}
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func (a *ACLUpdateOp) Path() string { return a.path }
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func (a *ACLUpdateOp) String() string {
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return fmt.Sprintf("%s type: %s path: %q",
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a.perms, TypeString(a.et), a.path)
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}
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