From 3a0a727110c59332e1a0f5b4a5be311244668a8c Mon Sep 17 00:00:00 2001
From: Giuseppe Scrivano <gscrivan@redhat.com>
Date: Mon, 24 Feb 2020 17:38:06 +0100
Subject: userns: support --userns=auto

automatically pick an empty range and create an user namespace for the
container.

Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
---
 pkg/util/utils.go | 12 ++++++++++++
 1 file changed, 12 insertions(+)

(limited to 'pkg/util')

diff --git a/pkg/util/utils.go b/pkg/util/utils.go
index 0c055745d..372c7c53b 100644
--- a/pkg/util/utils.go
+++ b/pkg/util/utils.go
@@ -327,6 +327,18 @@ func ParseIDMapping(mode namespaces.UsernsMode, uidMapSlice, gidMapSlice []strin
 		HostGIDMapping: true,
 	}
 
+	if mode.IsAuto() {
+		var err error
+		options.HostUIDMapping = false
+		options.HostGIDMapping = false
+		options.AutoUserNs = true
+		opts, err := mode.GetAutoOptions()
+		if err != nil {
+			return nil, err
+		}
+		options.AutoUserNsOpts = *opts
+		return &options, nil
+	}
 	if mode.IsKeepID() {
 		if len(uidMapSlice) > 0 || len(gidMapSlice) > 0 {
 			return nil, errors.New("cannot specify custom mappings with --userns=keep-id")
-- 
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