From 180445f5a889c25c15074e105405b2e96c1eadb2 Mon Sep 17 00:00:00 2001
From: chrislu <chris.lu@gmail.com>
Date: Fri, 11 Feb 2022 21:35:09 -0800
Subject: [PATCH] change to use fuse file system

---
 weed/command/mount2_std.go | 59 ++++++++++++++------------------------
 weed/mount/weedfs.go       |  4 +++
 weed/mount/weedfs_stats.go | 13 ++-------
 3 files changed, 29 insertions(+), 47 deletions(-)

diff --git a/weed/command/mount2_std.go b/weed/command/mount2_std.go
index 0cb288c3b..cb2b46556 100644
--- a/weed/command/mount2_std.go
+++ b/weed/command/mount2_std.go
@@ -11,7 +11,6 @@ import (
 	"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
 	"github.com/chrislusf/seaweedfs/weed/security"
 	"github.com/chrislusf/seaweedfs/weed/storage/types"
-	"github.com/hanwen/go-fuse/v2/fs"
 	"github.com/hanwen/go-fuse/v2/fuse"
 	"net/http"
 	"os"
@@ -141,40 +140,26 @@ func RunMount2(option *Mount2Options, umask os.FileMode) bool {
 	}
 
 	// mount fuse
-	sec := time.Second
-	opts := &fs.Options{
-		MountOptions: fuse.MountOptions{
-			AllowOther:               *option.allowOthers,
-			Options:                  nil,
-			MaxBackground:            128,
-			MaxWrite:                 1024 * 1024 * 2,
-			MaxReadAhead:             1024 * 1024 * 2,
-			IgnoreSecurityLabels:     false,
-			RememberInodes:           false,
-			FsName:                   *option.filer + ":" + filerMountRootPath,
-			Name:                     "seaweedfs",
-			SingleThreaded:           false,
-			DisableXAttrs:            false,
-			Debug:                    false,
-			EnableLocks:              false,
-			ExplicitDataCacheControl: false,
-			// SyncRead:                 false, // set to false to enable the FUSE_CAP_ASYNC_READ capability
-			DirectMount:      true,
-			DirectMountFlags: 0,
-			// EnableAcl:                false,
-		},
-		EntryTimeout:      &sec,
-		AttrTimeout:       &sec,
-		NegativeTimeout:   nil,
-		FirstAutomaticIno: 0,
-		OnAdd:             nil,
-		NullPermissions:   false,
-		UID:               0,
-		GID:               0,
-		ServerCallbacks:   nil,
-		Logger:            nil,
-	}
-	opts.Debug = true
+	fuseMountOptions := &fuse.MountOptions{
+		AllowOther:               *option.allowOthers,
+		Options:                  nil,
+		MaxBackground:            128,
+		MaxWrite:                 1024 * 1024 * 2,
+		MaxReadAhead:             1024 * 1024 * 2,
+		IgnoreSecurityLabels:     false,
+		RememberInodes:           false,
+		FsName:                   *option.filer + ":" + filerMountRootPath,
+		Name:                     "seaweedfs",
+		SingleThreaded:           false,
+		DisableXAttrs:            false,
+		Debug:                    true,
+		EnableLocks:              false,
+		ExplicitDataCacheControl: false,
+		// SyncRead:                 false, // set to false to enable the FUSE_CAP_ASYNC_READ capability
+		DirectMount:      true,
+		DirectMountFlags: 0,
+		// EnableAcl:                false,
+	}
 
 	// find mount point
 	mountRoot := filerMountRootPath
@@ -207,7 +192,7 @@ func RunMount2(option *Mount2Options, umask os.FileMode) bool {
 		UidGidMapper:       uidGidMapper,
 	})
 
-	server, err := fs.Mount(dir, seaweedFileSystem.Root(), opts)
+	server, err := fuse.NewServer(seaweedFileSystem, dir, fuseMountOptions)
 	if err != nil {
 		glog.Fatalf("Mount fail: %v", err)
 	}
@@ -217,7 +202,7 @@ func RunMount2(option *Mount2Options, umask os.FileMode) bool {
 
 	fmt.Printf("This is SeaweedFS version %s %s %s\n", util.Version(), runtime.GOOS, runtime.GOARCH)
 
-	server.Wait()
+	server.Serve()
 
 	return true
 }
diff --git a/weed/mount/weedfs.go b/weed/mount/weedfs.go
index 5f35d8112..8aa9c95a7 100644
--- a/weed/mount/weedfs.go
+++ b/weed/mount/weedfs.go
@@ -87,6 +87,10 @@ func (wfs *WFS) Root() *Directory {
 	return &wfs.root
 }
 
+func (wfs *WFS) String() string {
+	return "seaweedfs"
+}
+
 func (option *Option) setupUniqueCacheDirectory() {
 	cacheUniqueId := util.Md5String([]byte(option.MountDirectory + string(option.FilerAddresses[0]) + option.FilerMountRootPath + util.Version()))[0:8]
 	option.uniqueCacheDir = path.Join(option.CacheDir, cacheUniqueId)
diff --git a/weed/mount/weedfs_stats.go b/weed/mount/weedfs_stats.go
index f3ef268df..3de561082 100644
--- a/weed/mount/weedfs_stats.go
+++ b/weed/mount/weedfs_stats.go
@@ -5,26 +5,19 @@ import (
 	"fmt"
 	"github.com/chrislusf/seaweedfs/weed/glog"
 	"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
-	"github.com/hanwen/go-fuse/v2/fs"
 	"github.com/hanwen/go-fuse/v2/fuse"
 	"math"
-	"os"
-	"syscall"
 	"time"
 )
 
 const blockSize = 512
 
-var _ = fs.NodeStatfser(&Directory{})
-
 type statsCache struct {
 	filer_pb.StatisticsResponse
 	lastChecked int64 // unix time in seconds
 }
 
-func (dir *Directory) Statfs(ctx context.Context, out *fuse.StatfsOut) syscall.Errno {
-
-	wfs := dir.wfs
+func (wfs *WFS) StatFs(cancel <-chan struct{}, in *fuse.InHeader, out *fuse.StatfsOut) (code fuse.Status) {
 
 	glog.V(4).Infof("reading fs stats")
 
@@ -56,7 +49,7 @@ func (dir *Directory) Statfs(ctx context.Context, out *fuse.StatfsOut) syscall.E
 		})
 		if err != nil {
 			glog.V(0).Infof("filer Statistics: %v", err)
-			return fs.ToErrno(os.ErrInvalid)
+			return fuse.OK
 		}
 	}
 
@@ -83,5 +76,5 @@ func (dir *Directory) Statfs(ctx context.Context, out *fuse.StatfsOut) syscall.E
 	out.NameLen = 1024
 	out.Frsize = uint32(blockSize)
 
-	return fs.OK
+	return fuse.OK
 }