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swarm/api: FUSE read-write support (#13872)

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- Moved fuse related code in a new package, swarm/fuse
- Added write support
  - Create new files
  - Delete existing files
  - Append to files (with limitations)
- More test coverage
This commit is contained in:
Zahoor Mohamed
2017-04-12 05:36:02 +05:30
committed by Felix Lange
parent dd37064a15
commit 1d1d988aa7
15 changed files with 1693 additions and 362 deletions
Download Patch File Download Diff File Expand all files Collapse all files

191
swarm/api/api.go
View File

@ -25,9 +25,13 @@ import (
"strings"
"sync"
"bytes"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/log"
"github.com/ethereum/go-ethereum/swarm/storage"
"mime"
"path/filepath"
"time"
)
var (
@ -59,6 +63,13 @@ func NewApi(dpa *storage.DPA, dns Resolver) (self *Api) {
return
}
// to be used only in TEST
func (self *Api) Upload(uploadDir, index string) (hash string, err error) {
fs := NewFileSystem(self)
hash, err = fs.Upload(uploadDir, index)
return hash, err
}
// DPA reader API
func (self *Api) Retrieve(key storage.Key) storage.LazySectionReader {
return self.dpa.Retrieve(key)
@ -111,7 +122,7 @@ func (self *Api) Put(content, contentType string) (storage.Key, error) {
}
// Get uses iterative manifest retrieval and prefix matching
// to resolve path to content using dpa retrieve
// to resolve basePath to content using dpa retrieve
// it returns a section reader, mimeType, status and an error
func (self *Api) Get(key storage.Key, path string) (reader storage.LazySectionReader, mimeType string, status int, err error) {
trie, err := loadManifest(self.dpa, key, nil)
@ -160,3 +171,181 @@ func (self *Api) Modify(key storage.Key, path, contentHash, contentType string)
}
return trie.hash, nil
}
func (self *Api) AddFile(mhash, path, fname string, content []byte, nameresolver bool) (storage.Key, string, error) {
uri, err := Parse("bzz:/" + mhash)
if err != nil {
return nil, "", err
}
mkey, err := self.Resolve(uri)
if err != nil {
return nil, "", err
}
// trim the root dir we added
if path[:1] == "/" {
path = path[1:]
}
entry := &ManifestEntry{
Path: filepath.Join(path, fname),
ContentType: mime.TypeByExtension(filepath.Ext(fname)),
Mode: 0700,
Size: int64(len(content)),
ModTime: time.Now(),
}
mw, err := self.NewManifestWriter(mkey, nil)
if err != nil {
return nil, "", err
}
fkey, err := mw.AddEntry(bytes.NewReader(content), entry)
if err != nil {
return nil, "", err
}
newMkey, err := mw.Store()
if err != nil {
return nil, "", err
}
return fkey, newMkey.String(), nil
}
func (self *Api) RemoveFile(mhash, path, fname string, nameresolver bool) (string, error) {
uri, err := Parse("bzz:/" + mhash)
if err != nil {
return "", err
}
mkey, err := self.Resolve(uri)
if err != nil {
return "", err
}
// trim the root dir we added
if path[:1] == "/" {
path = path[1:]
}
mw, err := self.NewManifestWriter(mkey, nil)
if err != nil {
return "", err
}
err = mw.RemoveEntry(filepath.Join(path, fname))
if err != nil {
return "", err
}
newMkey, err := mw.Store()
if err != nil {
return "", err
}
return newMkey.String(), nil
}
func (self *Api) AppendFile(mhash, path, fname string, existingSize int64, content []byte, oldKey storage.Key, offset int64, addSize int64, nameresolver bool) (storage.Key, string, error) {
buffSize := offset + addSize
if buffSize < existingSize {
buffSize = existingSize
}
buf := make([]byte, buffSize)
oldReader := self.Retrieve(oldKey)
io.ReadAtLeast(oldReader, buf, int(offset))
newReader := bytes.NewReader(content)
io.ReadAtLeast(newReader, buf[offset:], int(addSize))
if buffSize < existingSize {
io.ReadAtLeast(oldReader, buf[addSize:], int(buffSize))
}
combinedReader := bytes.NewReader(buf)
totalSize := int64(len(buf))
// TODO(jmozah): to append using pyramid chunker when it is ready
//oldReader := self.Retrieve(oldKey)
//newReader := bytes.NewReader(content)
//combinedReader := io.MultiReader(oldReader, newReader)
uri, err := Parse("bzz:/" + mhash)
if err != nil {
return nil, "", err
}
mkey, err := self.Resolve(uri)
if err != nil {
return nil, "", err
}
// trim the root dir we added
if path[:1] == "/" {
path = path[1:]
}
mw, err := self.NewManifestWriter(mkey, nil)
if err != nil {
return nil, "", err
}
err = mw.RemoveEntry(filepath.Join(path, fname))
if err != nil {
return nil, "", err
}
entry := &ManifestEntry{
Path: filepath.Join(path, fname),
ContentType: mime.TypeByExtension(filepath.Ext(fname)),
Mode: 0700,
Size: totalSize,
ModTime: time.Now(),
}
fkey, err := mw.AddEntry(io.Reader(combinedReader), entry)
if err != nil {
return nil, "", err
}
newMkey, err := mw.Store()
if err != nil {
return nil, "", err
}
return fkey, newMkey.String(), nil
}
func (self *Api) BuildDirectoryTree(mhash string, nameresolver bool) (key storage.Key, manifestEntryMap map[string]*manifestTrieEntry, err error) {
uri, err := Parse("bzz:/" + mhash)
if err != nil {
return nil, nil, err
}
key, err = self.Resolve(uri)
if err != nil {
return nil, nil, err
}
quitC := make(chan bool)
rootTrie, err := loadManifest(self.dpa, key, quitC)
if err != nil {
return nil, nil, fmt.Errorf("can't load manifest %v: %v", key.String(), err)
}
manifestEntryMap = map[string]*manifestTrieEntry{}
err = rootTrie.listWithPrefix(uri.Path, quitC, func(entry *manifestTrieEntry, suffix string) {
manifestEntryMap[suffix] = entry
})
return key, manifestEntryMap, nil
}

5
swarm/api/filesystem.go
View File

@ -68,7 +68,6 @@ func (self *FileSystem) Upload(lpath, index string) (string, error) {
log.Debug(fmt.Sprintf("uploading '%s'", localpath))
err = filepath.Walk(localpath, func(path string, info os.FileInfo, err error) error {
if (err == nil) && !info.IsDir() {
//fmt.Printf("lp %s path %s\n", localpath, path)
if len(path) <= start {
return fmt.Errorf("Path is too short")
}
@ -170,7 +169,7 @@ func (self *FileSystem) Upload(lpath, index string) (string, error) {
return hs, err2
}
// Download replicates the manifest path structure on the local filesystem
// Download replicates the manifest basePath structure on the local filesystem
// under localpath
//
// DEPRECATED: Use the HTTP API instead
@ -269,7 +268,7 @@ func (self *FileSystem) Download(bzzpath, localpath string) error {
}
func retrieveToFile(quitC chan bool, dpa *storage.DPA, key storage.Key, path string) error {
f, err := os.Create(path) // TODO: path separators
f, err := os.Create(path) // TODO: basePath separators
if err != nil {
return err
}

133
swarm/api/fuse.go
View File

@ -1,133 +0,0 @@
// Copyright 2017 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
// +build linux darwin freebsd
// Data structures used for Fuse filesystem, serving directories and serving files to Fuse driver.
package api
import (
"io"
"os"
"bazil.org/fuse"
"bazil.org/fuse/fs"
"github.com/ethereum/go-ethereum/log"
"github.com/ethereum/go-ethereum/swarm/storage"
"golang.org/x/net/context"
)
type FS struct {
root *Dir
}
type Dir struct {
inode uint64
name string
path string
directories []*Dir
files []*File
}
type File struct {
inode uint64
name string
path string
key storage.Key
swarmApi *Api
fileSize uint64
reader storage.LazySectionReader
}
// Functions which satisfy the Fuse File System requests
func (filesystem *FS) Root() (fs.Node, error) {
return filesystem.root, nil
}
func (directory *Dir) Attr(ctx context.Context, a *fuse.Attr) error {
a.Inode = directory.inode
//TODO: need to get permission as argument
a.Mode = os.ModeDir | 0500
a.Uid = uint32(os.Getuid())
a.Gid = uint32(os.Getegid())
return nil
}
func (directory *Dir) Lookup(ctx context.Context, name string) (fs.Node, error) {
if directory.files != nil {
for _, n := range directory.files {
if n.name == name {
return n, nil
}
}
}
if directory.directories != nil {
for _, n := range directory.directories {
if n.name == name {
return n, nil
}
}
}
return nil, fuse.ENOENT
}
func (d *Dir) ReadDirAll(ctx context.Context) ([]fuse.Dirent, error) {
var children []fuse.Dirent
if d.files != nil {
for _, file := range d.files {
children = append(children, fuse.Dirent{Inode: file.inode, Type: fuse.DT_File, Name: file.name})
}
}
if d.directories != nil {
for _, dir := range d.directories {
children = append(children, fuse.Dirent{Inode: dir.inode, Type: fuse.DT_Dir, Name: dir.name})
}
}
return children, nil
}
func (file *File) Attr(ctx context.Context, a *fuse.Attr) error {
a.Inode = file.inode
//TODO: need to get permission as argument
a.Mode = 0500
a.Uid = uint32(os.Getuid())
a.Gid = uint32(os.Getegid())
reader := file.swarmApi.Retrieve(file.key)
quitC := make(chan bool)
size, err := reader.Size(quitC)
if err != nil {
log.Warn("Couldnt file size of file %s : %v", file.path, err)
a.Size = uint64(0)
}
a.Size = uint64(size)
file.fileSize = a.Size
return nil
}
var _ = fs.HandleReader(&File{})
func (file *File) Read(ctx context.Context, req *fuse.ReadRequest, resp *fuse.ReadResponse) error {
buf := make([]byte, req.Size)
reader := file.swarmApi.Retrieve(file.key)
n, err := reader.ReadAt(buf, req.Offset)
if err == io.ErrUnexpectedEOF || err == io.EOF {
err = nil
}
resp.Data = buf[:n]
return err
}

3
swarm/api/manifest.go
View File

@ -162,7 +162,7 @@ func (m *ManifestWalker) walk(trie *manifestTrie, prefix string, walkFn WalkFn)
type manifestTrie struct {
dpa *storage.DPA
entries [257]*manifestTrieEntry // indexed by first character of path, entries[256] is the empty path entry
entries [257]*manifestTrieEntry // indexed by first character of basePath, entries[256] is the empty basePath entry
hash storage.Key // if hash != nil, it is stored
}
@ -340,6 +340,7 @@ func (self *manifestTrie) recalcAndStore() error {
}
list.Entries = append(list.Entries, entry.ManifestEntry)
}
}
manifest, err := json.Marshal(list)

2
swarm/api/storage.go
View File

@ -83,7 +83,7 @@ func (self *Storage) Get(bzzpath string) (*Response, error) {
return &Response{mimeType, status, expsize, string(body[:size])}, err
}
// Modify(rootHash, path, contentHash, contentType) takes th e manifest trie rooted in rootHash,
// Modify(rootHash, basePath, contentHash, contentType) takes th e manifest trie rooted in rootHash,
// and merge on to it. creating an entry w conentType (mime)
//
// DEPRECATED: Use the HTTP API instead

43
swarm/api/swarmfs.go
View File

@ -1,43 +0,0 @@
// Copyright 2017 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
package api
import (
"sync"
"time"
)
const (
Swarmfs_Version = "0.1"
mountTimeout = time.Second * 5
maxFuseMounts = 5
)
type SwarmFS struct {
swarmApi *Api
activeMounts map[string]*MountInfo
activeLock *sync.RWMutex
}
func NewSwarmFS(api *Api) *SwarmFS {
swarmfs := &SwarmFS{
swarmApi: api,
activeLock: &sync.RWMutex{},
activeMounts: map[string]*MountInfo{},
}
return swarmfs
}

50
swarm/api/swarmfs_fallback.go
View File

@ -1,50 +0,0 @@
// Copyright 2017 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
// +build !linux,!darwin,!freebsd
package api
import (
"errors"
)
var errNoFUSE = errors.New("FUSE is not supported on this platform")
func isFUSEUnsupportedError(err error) bool {
return err == errNoFUSE
}
type MountInfo struct {
MountPoint string
ManifestHash string
}
func (self *SwarmFS) Mount(mhash, mountpoint string) (*MountInfo, error) {
return nil, errNoFUSE
}
func (self *SwarmFS) Unmount(mountpoint string) (bool, error) {
return false, errNoFUSE
}
func (self *SwarmFS) Listmounts() ([]*MountInfo, error) {
return nil, errNoFUSE
}
func (self *SwarmFS) Stop() error {
return nil
}

115
swarm/api/swarmfs_test.go
View File

@ -1,115 +0,0 @@
// Copyright 2016 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
package api
import (
"io/ioutil"
"os"
"path/filepath"
"testing"
)
var testUploadDir, _ = ioutil.TempDir(os.TempDir(), "fuse-source")
var testMountDir, _ = ioutil.TempDir(os.TempDir(), "fuse-dest")
func testFuseFileSystem(t *testing.T, f func(*FileSystem)) {
testApi(t, func(api *Api) {
f(NewFileSystem(api))
})
}
func createTestFiles(t *testing.T, files []string) {
os.RemoveAll(testUploadDir)
os.RemoveAll(testMountDir)
defer os.MkdirAll(testMountDir, 0777)
for f := range files {
actualPath := filepath.Join(testUploadDir, files[f])
filePath := filepath.Dir(actualPath)
err := os.MkdirAll(filePath, 0777)
if err != nil {
t.Fatalf("Error creating directory '%v' : %v", filePath, err)
}
_, err1 := os.OpenFile(actualPath, os.O_RDONLY|os.O_CREATE, 0666)
if err1 != nil {
t.Fatalf("Error creating file %v: %v", actualPath, err1)
}
}
}
func compareFiles(t *testing.T, files []string) {
for f := range files {
sourceFile := filepath.Join(testUploadDir, files[f])
destinationFile := filepath.Join(testMountDir, files[f])
sfinfo, err := os.Stat(sourceFile)
if err != nil {
t.Fatalf("Source file %v missing in mount: %v", files[f], err)
}
dfinfo, err := os.Stat(destinationFile)
if err != nil {
t.Fatalf("Destination file %v missing in mount: %v", files[f], err)
}
if sfinfo.Size() != dfinfo.Size() {
t.Fatalf("Size mismatch source (%v) vs destination(%v)", sfinfo.Size(), dfinfo.Size())
}
if dfinfo.Mode().Perm().String() != "-r-x------" {
t.Fatalf("Permission is not 0500for file: %v", err)
}
}
}
func doHashTest(fs *FileSystem, t *testing.T, ensName string, files ...string) {
createTestFiles(t, files)
bzzhash, err := fs.Upload(testUploadDir, "")
if err != nil {
t.Fatalf("Error uploading directory %v: %v", testUploadDir, err)
}
swarmfs := NewSwarmFS(fs.api)
defer swarmfs.Stop()
_, err = swarmfs.Mount(bzzhash, testMountDir)
if isFUSEUnsupportedError(err) {
t.Skip("FUSE not supported:", err)
} else if err != nil {
t.Fatalf("Error mounting hash %v: %v", bzzhash, err)
}
compareFiles(t, files)
if _, err := swarmfs.Unmount(testMountDir); err != nil {
t.Fatalf("Error unmounting path %v: %v", testMountDir, err)
}
}
// mounting with manifest Hash
func TestFuseMountingScenarios(t *testing.T) {
testFuseFileSystem(t, func(fs *FileSystem) {
//doHashTest(fs,t, "test","1.txt")
doHashTest(fs, t, "", "1.txt")
doHashTest(fs, t, "", "1.txt", "11.txt", "111.txt", "two/2.txt", "two/two/2.txt", "three/3.txt")
doHashTest(fs, t, "", "1/2/3/4/5/6/7/8/9/10/11/12/1.txt")
doHashTest(fs, t, "", "one/one.txt", "one.txt", "once/one.txt", "one/one/one.txt")
})
}

248
swarm/api/swarmfs_unix.go
View File

@ -1,248 +0,0 @@
// Copyright 2017 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
// +build linux darwin freebsd
package api
import (
"errors"
"fmt"
"os"
"path/filepath"
"strings"
"sync"
"time"
"bazil.org/fuse"
"bazil.org/fuse/fs"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/log"
"github.com/ethereum/go-ethereum/swarm/storage"
)
var (
inode uint64 = 1
inodeLock sync.RWMutex
)
var (
errEmptyMountPoint = errors.New("need non-empty mount point")
errMaxMountCount = errors.New("max FUSE mount count reached")
errMountTimeout = errors.New("mount timeout")
)
func isFUSEUnsupportedError(err error) bool {
if perr, ok := err.(*os.PathError); ok {
return perr.Op == "open" && perr.Path == "/dev/fuse"
}
return err == fuse.ErrOSXFUSENotFound
}
// MountInfo contains information about every active mount
type MountInfo struct {
MountPoint string
ManifestHash string
resolvedKey storage.Key
rootDir *Dir
fuseConnection *fuse.Conn
}
// newInode creates a new inode number.
// Inode numbers need to be unique, they are used for caching inside fuse
func newInode() uint64 {
inodeLock.Lock()
defer inodeLock.Unlock()
inode += 1
return inode
}
func (self *SwarmFS) Mount(mhash, mountpoint string) (*MountInfo, error) {
if mountpoint == "" {
return nil, errEmptyMountPoint
}
cleanedMountPoint, err := filepath.Abs(filepath.Clean(mountpoint))
if err != nil {
return nil, err
}
self.activeLock.Lock()
defer self.activeLock.Unlock()
noOfActiveMounts := len(self.activeMounts)
if noOfActiveMounts >= maxFuseMounts {
return nil, errMaxMountCount
}
if _, ok := self.activeMounts[cleanedMountPoint]; ok {
return nil, fmt.Errorf("%s is already mounted", cleanedMountPoint)
}
uri, err := Parse("bzz:/" + mhash)
if err != nil {
return nil, err
}
key, err := self.swarmApi.Resolve(uri)
if err != nil {
return nil, err
}
path := uri.Path
if len(path) > 0 {
path += "/"
}
quitC := make(chan bool)
trie, err := loadManifest(self.swarmApi.dpa, key, quitC)
if err != nil {
return nil, fmt.Errorf("can't load manifest %v: %v", key.String(), err)
}
dirTree := map[string]*Dir{}
rootDir := &Dir{
inode: newInode(),
name: "root",
directories: nil,
files: nil,
}
dirTree["root"] = rootDir
err = trie.listWithPrefix(path, quitC, func(entry *manifestTrieEntry, suffix string) {
key = common.Hex2Bytes(entry.Hash)
fullpath := "/" + suffix
basepath := filepath.Dir(fullpath)
filename := filepath.Base(fullpath)
parentDir := rootDir
dirUntilNow := ""
paths := strings.Split(basepath, "/")
for i := range paths {
if paths[i] != "" {
thisDir := paths[i]
dirUntilNow = dirUntilNow + "/" + thisDir
if _, ok := dirTree[dirUntilNow]; !ok {
dirTree[dirUntilNow] = &Dir{
inode: newInode(),
name: thisDir,
path: dirUntilNow,
directories: nil,
files: nil,
}
parentDir.directories = append(parentDir.directories, dirTree[dirUntilNow])
parentDir = dirTree[dirUntilNow]
} else {
parentDir = dirTree[dirUntilNow]
}
}
}
thisFile := &File{
inode: newInode(),
name: filename,
path: fullpath,
key: key,
swarmApi: self.swarmApi,
}
parentDir.files = append(parentDir.files, thisFile)
})
fconn, err := fuse.Mount(cleanedMountPoint, fuse.FSName("swarmfs"), fuse.VolumeName(mhash))
if err != nil {
fuse.Unmount(cleanedMountPoint)
log.Warn("Error mounting swarm manifest", "mountpoint", cleanedMountPoint, "err", err)
return nil, err
}
mounterr := make(chan error, 1)
go func() {
filesys := &FS{root: rootDir}
if err := fs.Serve(fconn, filesys); err != nil {
mounterr <- err
}
}()
// Check if the mount process has an error to report.
select {
case <-time.After(mountTimeout):
fuse.Unmount(cleanedMountPoint)
return nil, errMountTimeout
case err := <-mounterr:
log.Warn("Error serving swarm FUSE FS", "mountpoint", cleanedMountPoint, "err", err)
return nil, err
case <-fconn.Ready:
log.Info("Now serving swarm FUSE FS", "manifest", mhash, "mountpoint", cleanedMountPoint)
}
// Assemble and Store the mount information for future use
mi := &MountInfo{
MountPoint: cleanedMountPoint,
ManifestHash: mhash,
resolvedKey: key,
rootDir: rootDir,
fuseConnection: fconn,
}
self.activeMounts[cleanedMountPoint] = mi
return mi, nil
}
func (self *SwarmFS) Unmount(mountpoint string) (bool, error) {
self.activeLock.Lock()
defer self.activeLock.Unlock()
cleanedMountPoint, err := filepath.Abs(filepath.Clean(mountpoint))
if err != nil {
return false, err
}
mountInfo := self.activeMounts[cleanedMountPoint]
if mountInfo == nil || mountInfo.MountPoint != cleanedMountPoint {
return false, fmt.Errorf("%s is not mounted", cleanedMountPoint)
}
err = fuse.Unmount(cleanedMountPoint)
if err != nil {
// TODO(jmozah): try forceful unmount if normal unmount fails
return false, err
}
// remove the mount information from the active map
mountInfo.fuseConnection.Close()
delete(self.activeMounts, cleanedMountPoint)
return true, nil
}
func (self *SwarmFS) Listmounts() []*MountInfo {
self.activeLock.RLock()
defer self.activeLock.RUnlock()
rows := make([]*MountInfo, 0, len(self.activeMounts))
for _, mi := range self.activeMounts {
rows = append(rows, mi)
}
return rows
}
func (self *SwarmFS) Stop() bool {
for mp := range self.activeMounts {
mountInfo := self.activeMounts[mp]
self.Unmount(mountInfo.MountPoint)
}
return true
}