gh-14: added stop command (#22)

* gh-14: added stop command

* gh-14: fixed up imports

cmd/gitfs/main.go

@@ -2,9 +2,10 @@ package main
 
 import (
 	"fmt"
+	"os"
+
 	"github.com/mjpitz/gitfs/cmd"
 	"github.com/spf13/cobra"
-	"os"
 )
 
 func main() {
@@ -18,6 +19,7 @@ func main() {
 		"Specify the configuration path")
 
 	rootCmd.AddCommand(cmd.StartCommand)
+	rootCmd.AddCommand(cmd.StopCommand)
 
 	if err := rootCmd.Execute(); err != nil {
 		fmt.Println(err)

cmd/global.go

@@ -1,8 +1,9 @@
 package cmd
 
 import (
-	"github.com/sirupsen/logrus"
 	"os"
+
+	"github.com/sirupsen/logrus"
 )
 
 var (

cmd/start.go

@@ -1,6 +1,11 @@
 package cmd
 
 import (
+	"os"
+	"os/user"
+	"strconv"
+	"strings"
+
 	"bazil.org/fuse"
 	"bazil.org/fuse/fs"
 	"github.com/mjpitz/gitfs/pkg/clone"
@@ -10,10 +15,6 @@ import (
 	"github.com/mjpitz/gitfs/pkg/tree"
 	"github.com/sirupsen/logrus"
 	"github.com/spf13/cobra"
-	"os"
-	"os/user"
-	"strconv"
-	"strings"
 )
 
 var StartCommand = &cobra.Command{

cmd/stop.go

@@ -0,0 +1,34 @@
+package cmd
+
+import (
+	"os"
+	"syscall"
+
+	"github.com/mjpitz/gitfs/pkg/config"
+	"github.com/sirupsen/logrus"
+	"github.com/spf13/cobra"
+	"golang.org/x/sys/unix"
+)
+
+var StopCommand = &cobra.Command{
+	Use:   "stop",
+	Short: "Stops the file system server.",
+	Run: func(cmd *cobra.Command, args []string) {
+		props := ConfigPath
+		if len(props) == 0 {
+			fail("missing config file")
+		}
+
+		cfg, err := config.Load(os.ExpandEnv(props))
+		if err != nil {
+			fail("failed to parse configuration: %v", err)
+		}
+
+		mountpoint := os.ExpandEnv(cfg.Mount)
+
+		logrus.Infof("Unmounting %s", mountpoint)
+
+		_ = syscall.Unmount(mountpoint, unix.MNT_FORCE)
+		// ignore the error since it's likely not mounted
+	},
+}

go.mod

@@ -18,7 +18,7 @@ require (
 	golang.org/x/net v0.0.0-20181220203305-927f97764cc3
 	golang.org/x/oauth2 v0.0.0-20181203162652-d668ce993890
 	golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4 // indirect
-	golang.org/x/sys v0.0.0-20181228144115-9a3f9b0469bb // indirect
+	golang.org/x/sys v0.0.0-20181228144115-9a3f9b0469bb
 	google.golang.org/appengine v1.4.0 // indirect
 	gopkg.in/src-d/go-billy.v4 v4.3.0
 	gopkg.in/src-d/go-git-fixtures.v3 v3.3.0 // indirect

pkg/clone/cloner.go

@@ -3,6 +3,9 @@ package clone
 import (
 	"crypto/sha256"
 	"encoding/base32"
+	"os"
+	"regexp"
+
 	"github.com/mjpitz/gitfs/pkg/config"
 	"github.com/mjpitz/gitfs/pkg/sync"
 	"github.com/pkg/errors"
@@ -13,8 +16,6 @@ import (
 	"gopkg.in/src-d/go-git.v4"
 	"gopkg.in/src-d/go-git.v4/plumbing/cache"
 	"gopkg.in/src-d/go-git.v4/storage/filesystem"
-	"os"
-	"regexp"
 )
 
 func NewCloner(cfg *config.CloneConfiguration) *Cloner {