func (p *memp) CopyTo(dst w.Path, opt w.CopyOptions) (bool, error) {
p.fs.m.Lock()
defer p.fs.m.Unlock()
dstp, ok := dst.(*memp)
if !ok {
return false, w.ErrorBadHost
}
if p.path == dstp.path {
return false, w.ErrorSameFile
}
srcf, err := p.internalLookup()
if err != nil {
return false, w.ErrorNotFound
}
// Can only move complete directory trees.
if srcf.IsDirectory() && opt.Move && opt.Depth >= 0 {
return false, w.ErrorIsDir
}
if _, err := dstp.parent().internalLookup(); err != nil {
return false, w.ErrorMissingParent
}
newf := true
_, err = dstp.internalLookup()
if err == nil {
if opt.Overwrite {
newf = false
p.removeSubtree(dstp.path)
} else {
return false, w.ErrorDestExists
}
}
for orig, v := range p.fs.files {
nn, ok := wp.Included(orig, p.path, opt.Depth)
if !ok {
continue
}
nn = path.Join(dstp.path, nn)
if opt.Move {
log.Printf("MOVE %s -> %s", orig, nn)
// Note: As we adjust path here, it is important that
// this move operation does not depend on anything
// file-related.
v.path = nn
p.fs.files[nn] = v
delete(p.fs.files, orig)
} else {
log.Printf("COPY %s -> %s", orig, nn)
nv := v.clone(nn)
p.fs.files[nn] = nv
}
}
return newf, nil
}
func (lm *lockmaster) refreshLock(tok string, path Path, duration time.Duration) (*lock, error) {
lm.m.Lock()
defer lm.m.Unlock()
p := path.String()
// We enforce all locks to be a minimum of ten seconds.
if duration < minLockDuration {
duration = minLockDuration
}
if duration > maxLockDuration {
duration = maxLockDuration
}
l, ok := lm.locks[tok]
if !ok {
return nil, fmt.Errorf("unknown lock: %s", tok)
}
if l.expired() {
delete(lm.locks, l.token)
return nil, errors.New("expired lock")
}
if _, ok := wp.Included(p, l.path, l.depth); !ok {
return nil, errors.New("path not within lock")
}
l.duration = duration
l.touch()
return l, nil
}
func (lm *lockmaster) createLock(owner string, path Path, depth int, duration time.Duration) (*lock, error) {
lm.m.Lock()
defer lm.m.Unlock()
p := path.String()
// We enforce all locks to be a minimum of ten seconds.
if duration < minLockDuration {
duration = minLockDuration
}
if duration > maxLockDuration {
duration = maxLockDuration
}
for _, l := range lm.locks {
if l.expired() {
delete(lm.locks, l.token)
continue
}
// Check if the lock covers this path already.
if _, ok := wp.Included(p, l.path, l.depth); ok {
return nil, ErrorLocked
}
// Check if this crosses another lock.
if _, ok := wp.Included(l.path, p, depth); ok {
return nil, ErrorLocked
}
}
l := &lock{
token: lm.generateToken(),
depth: depth,
owner: owner,
duration: duration,
modified: time.Now(),
path: p,
}
lm.locks[l.token] = l
return l, nil
}
func (lm *lockmaster) isLocked(p, t string) bool {
lm.m.Lock()
defer lm.m.Unlock()
l := lm.locks[t]
if l == nil || l.expired() {
delete(lm.locks, t)
return false
}
_, ok := wp.Included(p, l.path, l.depth)
return ok
}
func (lm *lockmaster) getLockForPath(p string) *lock {
lm.m.Lock()
defer lm.m.Unlock()
for _, l := range lm.locks {
if l.expired() {
delete(lm.locks, l.token)
continue
}
if _, ok := wp.Included(p, l.path, l.depth); !ok {
continue
}
return l
}
return nil
}
func (p *memp) LookupSubtree(depth int) ([]w.File, error) {
_, err := p.Lookup()
if err != nil {
return nil, err
}
p.fs.m.Lock()
defer p.fs.m.Unlock()
var files []w.File
for fn, f := range p.fs.files {
if _, ok := wp.Included(fn, p.path, depth); ok {
files = append(files, f)
}
}
return files, nil
}
