122 lines
3.3 KiB
Go
122 lines
3.3 KiB
Go
// Copyright 2017 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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// +build linux darwin freebsd
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package fuse
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import (
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"context"
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"fmt"
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"os/exec"
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"runtime"
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"github.com/ethereum/go-ethereum/swarm/log"
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)
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func externalUnmount(mountPoint string) error {
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ctx, cancel := context.WithTimeout(context.Background(), unmountTimeout)
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defer cancel()
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// Try generic umount.
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if err := exec.CommandContext(ctx, "umount", mountPoint).Run(); err == nil {
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return nil
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}
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// Try FUSE-specific commands if umount didn't work.
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switch runtime.GOOS {
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case "darwin":
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return exec.CommandContext(ctx, "diskutil", "umount", mountPoint).Run()
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case "linux":
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return exec.CommandContext(ctx, "fusermount", "-u", mountPoint).Run()
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default:
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return fmt.Errorf("swarmfs unmount: unimplemented")
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}
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}
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func addFileToSwarm(sf *SwarmFile, content []byte, size int) error {
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fkey, mhash, err := sf.mountInfo.swarmApi.AddFile(sf.mountInfo.LatestManifest, sf.path, sf.name, content, true)
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if err != nil {
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return err
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}
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sf.lock.Lock()
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defer sf.lock.Unlock()
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sf.addr = fkey
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sf.fileSize = int64(size)
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sf.mountInfo.lock.Lock()
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defer sf.mountInfo.lock.Unlock()
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sf.mountInfo.LatestManifest = mhash
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log.Info("swarmfs added new file:", "fname", sf.name, "new Manifest hash", mhash)
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return nil
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}
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func removeFileFromSwarm(sf *SwarmFile) error {
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mkey, err := sf.mountInfo.swarmApi.RemoveFile(sf.mountInfo.LatestManifest, sf.path, sf.name, true)
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if err != nil {
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return err
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}
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sf.mountInfo.lock.Lock()
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defer sf.mountInfo.lock.Unlock()
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sf.mountInfo.LatestManifest = mkey
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log.Info("swarmfs removed file:", "fname", sf.name, "new Manifest hash", mkey)
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return nil
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}
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func removeDirectoryFromSwarm(sd *SwarmDir) error {
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if len(sd.directories) == 0 && len(sd.files) == 0 {
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return nil
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}
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for _, d := range sd.directories {
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err := removeDirectoryFromSwarm(d)
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if err != nil {
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return err
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}
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}
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for _, f := range sd.files {
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err := removeFileFromSwarm(f)
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if err != nil {
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return err
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}
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}
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return nil
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}
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func appendToExistingFileInSwarm(sf *SwarmFile, content []byte, offset int64, length int64) error {
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fkey, mhash, err := sf.mountInfo.swarmApi.AppendFile(sf.mountInfo.LatestManifest, sf.path, sf.name, sf.fileSize, content, sf.addr, offset, length, true)
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if err != nil {
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return err
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}
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sf.lock.Lock()
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defer sf.lock.Unlock()
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sf.addr = fkey
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sf.fileSize = sf.fileSize + int64(len(content))
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sf.mountInfo.lock.Lock()
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defer sf.mountInfo.lock.Unlock()
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sf.mountInfo.LatestManifest = mhash
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log.Info("swarmfs appended file:", "fname", sf.name, "new Manifest hash", mhash)
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return nil
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}
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