122 lines
3.3 KiB
Go
122 lines
3.3 KiB
Go
// 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 fuse
|
|
|
|
import (
|
|
"context"
|
|
"fmt"
|
|
"os/exec"
|
|
"runtime"
|
|
|
|
"github.com/ethereum/go-ethereum/swarm/log"
|
|
)
|
|
|
|
func externalUnmount(mountPoint string) error {
|
|
ctx, cancel := context.WithTimeout(context.Background(), unmountTimeout)
|
|
defer cancel()
|
|
|
|
// Try generic umount.
|
|
if err := exec.CommandContext(ctx, "umount", mountPoint).Run(); err == nil {
|
|
return nil
|
|
}
|
|
// Try FUSE-specific commands if umount didn't work.
|
|
switch runtime.GOOS {
|
|
case "darwin":
|
|
return exec.CommandContext(ctx, "diskutil", "umount", mountPoint).Run()
|
|
case "linux":
|
|
return exec.CommandContext(ctx, "fusermount", "-u", mountPoint).Run()
|
|
default:
|
|
return fmt.Errorf("swarmfs unmount: unimplemented")
|
|
}
|
|
}
|
|
|
|
func addFileToSwarm(sf *SwarmFile, content []byte, size int) error {
|
|
fkey, mhash, err := sf.mountInfo.swarmApi.AddFile(context.TODO(), sf.mountInfo.LatestManifest, sf.path, sf.name, content, true)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
sf.lock.Lock()
|
|
defer sf.lock.Unlock()
|
|
sf.addr = fkey
|
|
sf.fileSize = int64(size)
|
|
|
|
sf.mountInfo.lock.Lock()
|
|
defer sf.mountInfo.lock.Unlock()
|
|
sf.mountInfo.LatestManifest = mhash
|
|
|
|
log.Info("swarmfs added new file:", "fname", sf.name, "new Manifest hash", mhash)
|
|
return nil
|
|
}
|
|
|
|
func removeFileFromSwarm(sf *SwarmFile) error {
|
|
mkey, err := sf.mountInfo.swarmApi.RemoveFile(context.TODO(), sf.mountInfo.LatestManifest, sf.path, sf.name, true)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
sf.mountInfo.lock.Lock()
|
|
defer sf.mountInfo.lock.Unlock()
|
|
sf.mountInfo.LatestManifest = mkey
|
|
|
|
log.Info("swarmfs removed file:", "fname", sf.name, "new Manifest hash", mkey)
|
|
return nil
|
|
}
|
|
|
|
func removeDirectoryFromSwarm(sd *SwarmDir) error {
|
|
if len(sd.directories) == 0 && len(sd.files) == 0 {
|
|
return nil
|
|
}
|
|
|
|
for _, d := range sd.directories {
|
|
err := removeDirectoryFromSwarm(d)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
}
|
|
|
|
for _, f := range sd.files {
|
|
err := removeFileFromSwarm(f)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func appendToExistingFileInSwarm(sf *SwarmFile, content []byte, offset int64, length int64) error {
|
|
fkey, mhash, err := sf.mountInfo.swarmApi.AppendFile(context.TODO(), sf.mountInfo.LatestManifest, sf.path, sf.name, sf.fileSize, content, sf.addr, offset, length, true)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
sf.lock.Lock()
|
|
defer sf.lock.Unlock()
|
|
sf.addr = fkey
|
|
sf.fileSize = sf.fileSize + int64(len(content))
|
|
|
|
sf.mountInfo.lock.Lock()
|
|
defer sf.mountInfo.lock.Unlock()
|
|
sf.mountInfo.LatestManifest = mhash
|
|
|
|
log.Info("swarmfs appended file:", "fname", sf.name, "new Manifest hash", mhash)
|
|
return nil
|
|
}
|