From 9be3f1ef7806a7693a3d75c068564f19c57b7361 Mon Sep 17 00:00:00 2001
From: Darren Shepherd <darren@rancher.com>
Date: Thu, 24 Sep 2015 23:16:48 -0700
Subject: [PATCH 1/2] Make godep executable configurable in Makefile.docker

---
 Makefile.docker | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/Makefile.docker b/Makefile.docker
index d640d46d..dfa4578a 100644
--- a/Makefile.docker
+++ b/Makefile.docker
@@ -1,11 +1,12 @@
 include build.conf
 FORCE_PULL := 0
 DEV_BUILD  := 0
+GODEP := godep
 
 
 bin/rancheros:
 	mkdir -p $(dir $@)
-	godep go build -tags netgo -installsuffix netgo -ldflags "-X github.com/rancherio/os/config.VERSION $(VERSION) -linkmode external -extldflags -static" -o $@
+	$(GODEP) go build -tags netgo -installsuffix netgo -ldflags "-X github.com/rancherio/os/config.VERSION $(VERSION) -linkmode external -extldflags -static" -o $@
 	strip --strip-all $@
 
 

From 427aa1f61a398d5e369c4c36acfb7b17adb8c555 Mon Sep 17 00:00:00 2001
From: Darren Shepherd <darren@rancher.com>
Date: Thu, 24 Sep 2015 23:21:37 -0700
Subject: [PATCH 2/2] Fix symlinking docker.dist in custom consoles

---
 Godeps/Godeps.json                            |  4 +--
 .../rancher/docker-from-scratch/scratch.go    | 27 +++++++++++----
 cmd/userdocker/main.go                        | 34 +++++++++----------
 3 files changed, 38 insertions(+), 27 deletions(-)

diff --git a/Godeps/Godeps.json b/Godeps/Godeps.json
index 09aa80c3..bfd8736e 100644
--- a/Godeps/Godeps.json
+++ b/Godeps/Godeps.json
@@ -351,8 +351,8 @@
 		},
 		{
 			"ImportPath": "github.com/rancher/docker-from-scratch",
-			"Comment": "v1.8.2-1",
-			"Rev": "500f0babfdbfcd55fbdbf6690e4508ceb7323474"
+			"Comment": "v1.8.2-1-2-g5852c65",
+			"Rev": "5852c65f66b6a5e850811dc9782d3b7400531fee"
 		},
 		{
 			"ImportPath": "github.com/rancher/netconf",
diff --git a/Godeps/_workspace/src/github.com/rancher/docker-from-scratch/scratch.go b/Godeps/_workspace/src/github.com/rancher/docker-from-scratch/scratch.go
index b7c8070a..e9f1c149 100644
--- a/Godeps/_workspace/src/github.com/rancher/docker-from-scratch/scratch.go
+++ b/Godeps/_workspace/src/github.com/rancher/docker-from-scratch/scratch.go
@@ -23,6 +23,7 @@ const (
 	iptables      = "/sbin/iptables"
 	modprobe      = "/sbin/modprobe"
 	systemdRoot   = "/sys/fs/cgroup/systemd/user.slice"
+	distSuffix    = ".dist"
 )
 
 var (
@@ -189,7 +190,7 @@ func execDocker(config *Config, docker, cmd string, args []string) (*exec.Cmd, e
 		err := cmd.Start()
 		return cmd, err
 	} else {
-		err := syscall.Exec(docker, append([]string{cmd}, args...), env)
+		err := syscall.Exec(expand(docker), append([]string{cmd}, args...), env)
 		return nil, err
 	}
 }
@@ -481,15 +482,27 @@ func setupSystemd(config *Config) error {
 	return ioutil.WriteFile(path.Join(systemdRoot, "cgroup.procs"), []byte(strconv.Itoa(os.Getpid())+"\n"), 0644)
 }
 
+func expand(bin string) string {
+	expanded, err := exec.LookPath(bin)
+	if err == nil {
+		return expanded
+	}
+	return bin
+}
+
 func setupBin(config *Config, bin string) error {
-	if _, err := os.Stat(bin); os.IsNotExist(err) {
-		dist := bin + ".dist"
-		if _, err := os.Stat(dist); err == nil {
-			return os.Symlink(dist, bin)
-		}
+	expanded, err := exec.LookPath(bin)
+	if err == nil {
+		return nil
 	}
 
-	return nil
+	expanded, err = exec.LookPath(bin + distSuffix)
+	if err != nil {
+		// Purposely not returning error
+		return nil
+	}
+
+	return CreateSymlink(expanded, expanded[:len(expanded)-len(distSuffix)])
 }
 
 func setupLogging(config *Config) error {
diff --git a/cmd/userdocker/main.go b/cmd/userdocker/main.go
index d09f398b..afd2b32c 100644
--- a/cmd/userdocker/main.go
+++ b/cmd/userdocker/main.go
@@ -70,26 +70,23 @@ type result struct {
 	Pid int `json:"Pid"`
 }
 
-func expand(first, second string, args []string) ([]string, error) {
-	var err error
+func findProgram(searchPaths ...string) string {
 	prog := ""
 
-	prog, err = exec.LookPath(first)
-	if err != nil {
-		prog, err = exec.LookPath(second)
-	}
-	if err != nil {
-		return nil, err
+	for _, i := range searchPaths {
+		var err error
+		prog, err = exec.LookPath(i)
+		if err == nil {
+			break
+		}
+		prog = i
 	}
 
-	return append([]string{prog}, args...), nil
+	return prog
 }
 
 func runNsenter(pid int) error {
-	args, err := expand(userDocker, "", []string{"main"})
-	if err != nil {
-		return err
-	}
+	args := []string{findProgram(userDocker), "main"}
 
 	r, w, err := os.Pipe()
 	if err != nil {
@@ -224,14 +221,15 @@ func main(cfg *config.CloudConfig) error {
 		}
 	}
 
-	args, err := expand("docker-init", "docker", args)
-	if err != nil {
-		return err
+	prog := findProgram("docker-init", "dockerlaunch", "docker")
+	if strings.Contains(prog, "dockerlaunch") {
+		args = append([]string{prog, "docker"}, args...)
+	} else {
+		args = append([]string{prog}, args...)
 	}
 
 	log.Infof("Running %v", args)
-	err = syscall.Exec(args[0], args, dockerCfg.AppendEnv())
-	return err
+	return syscall.Exec(args[0], args, dockerCfg.AppendEnv())
 }
 
 func switchCgroup(src, target int) error {