bwrap: implement argument builder

Signed-off-by: Ophestra Umiker <cat@ophivana.moe>

bwrap/config.bool.go

@@ -0,0 +1,64 @@
+package bwrap
+
+const (
+	UnshareAll = iota
+	UnshareUser
+	UnshareIPC
+	UnsharePID
+	UnshareNet
+	UnshareUTS
+	UnshareCGroup
+	ShareNet
+
+	UserNS
+	Clearenv
+
+	NewSession
+	DieWithParent
+	AsInit
+
+	boolC
+)
+
+var boolArgs = func() (b [boolC][]string) {
+	b[UnshareAll] = []string{"--unshare-all"}
+	b[UnshareUser] = []string{"--unshare-user"}
+	b[UnshareIPC] = []string{"--unshare-ipc"}
+	b[UnsharePID] = []string{"--unshare-pid"}
+	b[UnshareNet] = []string{"--unshare-net"}
+	b[UnshareUTS] = []string{"--unshare-uts"}
+	b[UnshareCGroup] = []string{"--unshare-cgroup"}
+	b[ShareNet] = []string{"--share-net"}
+
+	b[UserNS] = []string{"--disable-userns", "--assert-userns-disabled"}
+	b[Clearenv] = []string{"--clearenv"}
+
+	b[NewSession] = []string{"--new-session"}
+	b[DieWithParent] = []string{"--die-with-parent"}
+	b[AsInit] = []string{"--as-pid-1"}
+
+	return
+}()
+
+func (c *Config) boolArgs() (b [boolC]bool) {
+	if c.Unshare == nil {
+		b[UnshareAll] = true
+		b[ShareNet] = c.Net
+	} else {
+		b[UnshareUser] = c.Unshare.User
+		b[UnshareIPC] = c.Unshare.IPC
+		b[UnsharePID] = c.Unshare.PID
+		b[UnshareNet] = c.Unshare.Net
+		b[UnshareUTS] = c.Unshare.UTS
+		b[UnshareCGroup] = c.Unshare.CGroup
+	}
+
+	b[UserNS] = !c.UserNS
+	b[Clearenv] = c.Clearenv
+
+	b[NewSession] = c.NewSession
+	b[DieWithParent] = c.DieWithParent
+	b[AsInit] = c.AsInit
+
+	return
+}