app-emulation/rkt: Allow several --hosts-entry=host args

sdk_container/src/third_party/coreos-overlay/app-emulation/rkt/files/rkt-1.29.0-allow-multiple-hosts-entry-host.patch

@@ -0,0 +1,68 @@
+From ce936a91678b77a2b91440e0198c895519ca8b24 Mon Sep 17 00:00:00 2001
+From: Luca Bruno <luca.bruno@coreos.com>
+Date: Mon, 23 Oct 2017 08:49:09 +0000
+Subject: [PATCH] stage0/run: relax '--hosts-entry' parser
+
+This tweaks the '--hosts-entry' CLI flag parser to accept multiple
+time the special value "host" when there are no other conflicting
+settings.
+---
+ rkt/run.go                  | 14 +++++++-------
+ tests/rkt_etc_hosts_test.go |  5 +++++
+ 2 files changed, 12 insertions(+), 7 deletions(-)
+
+diff --git a/rkt/run.go b/rkt/run.go
+index b852e13a6..ab4121475 100644
+--- a/rkt/run.go
++++ b/rkt/run.go
+@@ -18,6 +18,7 @@ package main
+ 
+ import (
+ 	"bufio"
++	"errors"
+ 	"fmt"
+ 	"net"
+ 	"os"
+@@ -643,13 +644,8 @@ func parseDNSFlags(flagHostsEntries, flagDNS, flagDNSSearch, flagDNSOpt []string
+ 	// Parse out --hosts-entries, also looking for the magic value "host"
+ 	for _, entry := range flagHostsEntries {
+ 		if entry == "host" {
+-			if len(flagHostsEntries) == 1 {
+-				DNSConfMode.Hosts = "host"
+-			} else {
+-				return DNSConfMode, DNSConfig, &HostsEntries,
+-					fmt.Errorf("cannot pass --hosts-entry=host with multiple hosts-entries")
+-			}
+-			break
++			DNSConfMode.Hosts = "host"
++			continue
+ 		}
+ 		for _, entry := range strings.Split(entry, ",") {
+ 			vals := strings.SplitN(entry, "=", 2)
+@@ -677,6 +673,10 @@ func parseDNSFlags(flagHostsEntries, flagDNS, flagDNSSearch, flagDNSOpt []string
+ 	}
+ 
+ 	if len(HostsEntries) > 0 {
++		if DNSConfMode.Hosts == "host" {
++			return DNSConfMode, DNSConfig, &HostsEntries,
++				errors.New("cannot pass --hosts-entry=host with multiple hosts-entries")
++		}
+ 		DNSConfMode.Hosts = "stage0"
+ 	}
+ 
+diff --git a/tests/rkt_etc_hosts_test.go b/tests/rkt_etc_hosts_test.go
+index 374916834..b3967cf6e 100644
+--- a/tests/rkt_etc_hosts_test.go
++++ b/tests/rkt_etc_hosts_test.go
+@@ -80,6 +80,11 @@ func TestEtcHosts(t *testing.T) {
+ 			"--exec=/inspect -- -file-name=/etc/hosts -hash-file",
+ 			sum,
+ 		},
++		{ // Test that multiple '--hosts-entry=host' entries are fine
++			"--hosts-entry=host --hosts-entry=host",
++			"--exec=/inspect -- -file-name=/etc/hosts -hash-file",
++			sum,
++		},
+ 		{ // test that we create our own
+ 			"--hosts-entry=128.66.0.99=host1",
+ 			"--exec=/inspect -- -file-name=/etc/hosts -read-file",

sdk_container/src/third_party/coreos-overlay/app-emulation/rkt/rkt-9999.ebuild

@@ -84,6 +84,8 @@ src_prepare() {
 		die "CoreOS versions in ebuild and rkt build scripts are mismatched, expecting ${rkt_coreos_version}!"
 	fi
 
+	epatch "${FILESDIR}/${PN}-1.29.0-allow-multiple-hosts-entry-host.patch"
+
 	autotools-utils_src_prepare
 }