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Diffstat (limited to 'swarm/api/swarmfs_unix.go')
-rw-r--r--swarm/api/swarmfs_unix.go167
1 files changed, 72 insertions, 95 deletions
diff --git a/swarm/api/swarmfs_unix.go b/swarm/api/swarmfs_unix.go
index ae0216e1d..e696c6b9a 100644
--- a/swarm/api/swarmfs_unix.go
+++ b/swarm/api/swarmfs_unix.go
@@ -14,77 +14,86 @@
// 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
+// +build linux darwin freebsd
package api
import (
- "path/filepath"
+ "errors"
"fmt"
+ "os"
+ "path/filepath"
"strings"
+ "sync"
"time"
- "github.com/ethereum/go-ethereum/swarm/storage"
+
"bazil.org/fuse"
- "github.com/ethereum/go-ethereum/log"
- "github.com/ethereum/go-ethereum/common"
"bazil.org/fuse/fs"
- "sync"
+ "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 (
- inode uint64 = 1
- inodeLock sync.RWMutex
+ errEmptyMountPoint = errors.New("need non-empty mount point")
+ errMaxMountCount = errors.New("max FUSE mount count reached")
+ errMountTimeout = errors.New("mount timeout")
)
-// information about every active mount
+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
+ 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 {
+func newInode() uint64 {
inodeLock.Lock()
- defer inodeLock.Unlock()
+ defer inodeLock.Unlock()
inode += 1
return inode
}
-
-
-func (self *SwarmFS) Mount(mhash, mountpoint string) (string, error) {
+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 {
- err := fmt.Errorf("Max mount count reached. Cannot mount %s ", mountpoint)
- log.Warn(err.Error())
- return err.Error(), err
- }
-
- cleanedMountPoint, err := filepath.Abs(filepath.Clean(mountpoint))
- if err != nil {
- return err.Error(), err
+ return nil, errMaxMountCount
}
if _, ok := self.activeMounts[cleanedMountPoint]; ok {
- err := fmt.Errorf("Mountpoint %s already mounted.", cleanedMountPoint)
- log.Warn(err.Error())
- return err.Error(), err
+ return nil, fmt.Errorf("%s is already mounted", cleanedMountPoint)
}
- log.Info(fmt.Sprintf("Attempting to mount %s ", cleanedMountPoint))
key, _, path, err := self.swarmApi.parseAndResolve(mhash, true)
if err != nil {
- errStr := fmt.Sprintf("Could not resolve %s : %v", mhash, err)
- log.Warn(errStr)
- return errStr, err
+ return nil, fmt.Errorf("can't resolve %q: %v", mhash, err)
}
if len(path) > 0 {
@@ -94,15 +103,13 @@ func (self *SwarmFS) Mount(mhash, mountpoint string) (string, error) {
quitC := make(chan bool)
trie, err := loadManifest(self.swarmApi.dpa, key, quitC)
if err != nil {
- errStr := fmt.Sprintf("fs.Download: loadManifestTrie error: %v", err)
- log.Warn(errStr)
- return errStr, err
+ return nil, fmt.Errorf("can't load manifest %v: %v", key.String(), err)
}
dirTree := map[string]*Dir{}
rootDir := &Dir{
- inode: NewInode(),
+ inode: newInode(),
name: "root",
directories: nil,
files: nil,
@@ -110,7 +117,6 @@ func (self *SwarmFS) Mount(mhash, mountpoint string) (string, error) {
dirTree["root"] = rootDir
err = trie.listWithPrefix(path, quitC, func(entry *manifestTrieEntry, suffix string) {
-
key = common.Hex2Bytes(entry.Hash)
fullpath := "/" + suffix
basepath := filepath.Dir(fullpath)
@@ -126,7 +132,7 @@ func (self *SwarmFS) Mount(mhash, mountpoint string) (string, error) {
if _, ok := dirTree[dirUntilNow]; !ok {
dirTree[dirUntilNow] = &Dir{
- inode: NewInode(),
+ inode: newInode(),
name: thisDir,
path: dirUntilNow,
directories: nil,
@@ -142,7 +148,7 @@ func (self *SwarmFS) Mount(mhash, mountpoint string) (string, error) {
}
}
thisFile := &File{
- inode: NewInode(),
+ inode: newInode(),
name: filename,
path: fullpath,
key: key,
@@ -154,113 +160,84 @@ func (self *SwarmFS) Mount(mhash, mountpoint string) (string, error) {
fconn, err := fuse.Mount(cleanedMountPoint, fuse.FSName("swarmfs"), fuse.VolumeName(mhash))
if err != nil {
fuse.Unmount(cleanedMountPoint)
- errStr := fmt.Sprintf("Mounting %s encountered error: %v", cleanedMountPoint, err)
- log.Warn(errStr)
- return errStr, err
+ log.Warn("Error mounting swarm manifest", "mountpoint", cleanedMountPoint, "err", err)
+ return nil, err
}
mounterr := make(chan error, 1)
go func() {
- log.Info(fmt.Sprintf("Serving %s at %s", mhash, cleanedMountPoint))
filesys := &FS{root: rootDir}
if err := fs.Serve(fconn, filesys); err != nil {
- log.Warn(fmt.Sprintf("Could not Serve FS error: %v", err))
+ mounterr <- err
}
}()
// Check if the mount process has an error to report.
select {
-
case <-time.After(mountTimeout):
- err := fmt.Errorf("Mounting %s timed out.", cleanedMountPoint)
- log.Warn(err.Error())
- return err.Error(), err
+ fuse.Unmount(cleanedMountPoint)
+ return nil, errMountTimeout
case err := <-mounterr:
- errStr := fmt.Sprintf("Mounting %s encountered error: %v", cleanedMountPoint, err)
- log.Warn(errStr)
- return errStr, err
+ log.Warn("Error serving swarm FUSE FS", "mountpoint", cleanedMountPoint, "err", err)
+ return nil, err
case <-fconn.Ready:
- log.Debug(fmt.Sprintf("Mounting connection succeeded for : %v", cleanedMountPoint))
+ log.Info("Now serving swarm FUSE FS", "manifest", mhash, "mountpoint", cleanedMountPoint)
}
-
-
- //Assemble and Store the mount information for future use
- mountInformation := &MountInfo{
- mountPoint: cleanedMountPoint,
- manifestHash: mhash,
+ // Assemble and Store the mount information for future use
+ mi := &MountInfo{
+ MountPoint: cleanedMountPoint,
+ ManifestHash: mhash,
resolvedKey: key,
rootDir: rootDir,
fuseConnection: fconn,
}
- self.activeMounts[cleanedMountPoint] = mountInformation
-
- succString := fmt.Sprintf("Mounting successful for %s", cleanedMountPoint)
- log.Info(succString)
-
- return succString, nil
+ self.activeMounts[cleanedMountPoint] = mi
+ return mi, nil
}
-func (self *SwarmFS) Unmount(mountpoint string) (string, error) {
-
+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 err.Error(), err
+ return false, err
}
- // Get the mount information based on the mountpoint argument
mountInfo := self.activeMounts[cleanedMountPoint]
-
-
- if mountInfo == nil || mountInfo.mountPoint != cleanedMountPoint {
- err := fmt.Errorf("Could not find mount information for %s ", cleanedMountPoint)
- log.Warn(err.Error())
- return err.Error(), err
+ if mountInfo == nil || mountInfo.MountPoint != cleanedMountPoint {
+ return false, fmt.Errorf("%s is not mounted", cleanedMountPoint)
}
-
err = fuse.Unmount(cleanedMountPoint)
if err != nil {
- //TODO: try forceful unmount if normal unmount fails
- errStr := fmt.Sprintf("UnMount error: %v", err)
- log.Warn(errStr)
- return errStr, err
+ // TODO(jmozah): try forceful unmount if normal unmount fails
+ return false, err
}
+ // remove the mount information from the active map
mountInfo.fuseConnection.Close()
-
- //remove the mount information from the active map
delete(self.activeMounts, cleanedMountPoint)
-
- succString := fmt.Sprintf("UnMounting %v succeeded", cleanedMountPoint)
- log.Info(succString)
- return succString, nil
+ return true, nil
}
-func (self *SwarmFS) Listmounts() (string, error) {
-
+func (self *SwarmFS) Listmounts() []*MountInfo {
self.activeLock.RLock()
defer self.activeLock.RUnlock()
- var rows []string
- for mp := range self.activeMounts {
- mountInfo := self.activeMounts[mp]
- rows = append(rows, fmt.Sprintf("Swarm Root: %s, Mount Point: %s ", mountInfo.manifestHash, mountInfo.mountPoint))
+ rows := make([]*MountInfo, 0, len(self.activeMounts))
+ for _, mi := range self.activeMounts {
+ rows = append(rows, mi)
}
-
- return strings.Join(rows, "\n"), nil
+ return rows
}
func (self *SwarmFS) Stop() bool {
-
for mp := range self.activeMounts {
mountInfo := self.activeMounts[mp]
- self.Unmount(mountInfo.mountPoint)
+ self.Unmount(mountInfo.MountPoint)
}
-
return true
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-10-11 20:05:45 +0800