func statNode(ctx context.Context, config libkbfs.Config, nodePathStr string) error {
p, err := makeKbfsPath(nodePathStr)
if err != nil {
return err
}
n, ei, err := p.getNode(ctx, config)
if err != nil {
return err
}
// If n is non-nil, ignore the EntryInfo returned by
// p.getNode() so we can exercise the Stat() codepath. We
// can't compare the two, since they might legitimately differ
// due to races.
if n != nil {
ei, err = config.KBFSOps().Stat(ctx, n)
if err != nil {
return err
}
}
var symPathStr string
if ei.Type == libkbfs.Sym {
symPathStr = fmt.Sprintf("SymPath: %s, ", ei.SymPath)
}
mtimeStr := time.Unix(0, ei.Mtime).String()
ctimeStr := time.Unix(0, ei.Ctime).String()
fmt.Printf("{Type: %s, Size: %d, %sMtime: %s, Ctime: %s}\n", ei.Type, ei.Size, symPathStr, mtimeStr, ctimeStr)
return nil
}
// GetEncodedMetrics returns metrics encoded as bytes for metrics file.
func GetEncodedMetrics(config libkbfs.Config) func(context.Context) ([]byte, time.Time, error) {
return func(context.Context) ([]byte, time.Time, error) {
if registry := config.MetricsRegistry(); registry != nil {
b := bytes.NewBuffer(nil)
metricsutil.WriteMetrics(registry, b)
return b.Bytes(), time.Time{}, nil
}
return []byte("Metrics have been turned off.\n"), time.Time{}, nil
}
}
// NewFS creates an FS
func NewFS(config libkbfs.Config, conn *fuse.Conn, debug bool) *FS {
log := config.MakeLogger("kbfsfuse")
// We need extra depth for errors, so that we can report the line
// number for the caller of reportErr, not reportErr itself.
errLog := log.CloneWithAddedDepth(1)
if debug {
// Turn on debugging. TODO: allow a proper log file and
// style to be specified.
log.Configure("", true, "")
errLog.Configure("", true, "")
}
fs := &FS{config: config, conn: conn, log: log, errLog: errLog}
return fs
}
func (r *RemoteStatus) loop(ctx context.Context, log logger.Logger, config libkbfs.Config) {
for {
tctx, cancel := context.WithTimeout(ctx, 1*time.Second)
st, ch, err := config.KBFSOps().Status(tctx)
// No deferring inside loops, and no panics either here.
cancel()
if err != nil {
log.Warning("KBFS Status failed: %v", err)
}
r.update(st)
// Block on the channel or shutdown.
select {
case <-ctx.Done():
return
case <-ch:
}
}
}
func readHelper(ctx context.Context, config libkbfs.Config, args []string) error {
flags := flag.NewFlagSet("kbfs read", flag.ContinueOnError)
verbose := flags.Bool("v", false, "Print extra status output.")
flags.Parse(args)
if flags.NArg() != 1 {
return errExactlyOnePath
}
filePathStr := flags.Arg(0)
p, err := makeKbfsPath(filePathStr)
if err != nil {
return err
}
if p.pathType != tlfPath {
return fmt.Errorf("Cannot read %s", p)
}
if *verbose {
fmt.Fprintf(os.Stderr, "Looking up %s\n", p)
}
fileNode, err := p.getFileNode(ctx, config)
if err != nil {
return err
}
nr := nodeReader{
ctx: ctx,
kbfsOps: config.KBFSOps(),
node: fileNode,
off: 0,
verbose: *verbose,
}
_, err = io.Copy(os.Stdout, &nr)
if err != nil {
return err
}
return nil
}
// GetEncodedErrors gets the list of encoded errors in a format suitable
// for error file.
func GetEncodedErrors(config libkbfs.Config) func(context.Context) ([]byte, time.Time, error) {
return func(_ context.Context) ([]byte, time.Time, error) {
errors := config.Reporter().AllKnownErrors()
jsonErrors := make([]JSONReportedError, len(errors))
for i, e := range errors {
jsonErrors[i].Time = e.Time
jsonErrors[i].Error = e.Error.Error()
jsonErrors[i].Stack = convertStack(e.Stack)
}
data, err := json.MarshalIndent(jsonErrors, "", " ")
if err != nil {
return nil, time.Time{}, err
}
data = append(data, '\n')
var t time.Time
if len(errors) > 0 {
t = errors[len(errors)-1].Time
}
return data, t, err
}
}
// Returns a nil node if p doesn't have type tlfPath.
func (p kbfsPath) getNode(ctx context.Context, config libkbfs.Config) (n libkbfs.Node, ei libkbfs.EntryInfo, err error) {
if p.pathType != tlfPath {
ei := libkbfs.EntryInfo{
Type: libkbfs.Dir,
}
return nil, ei, nil
}
name := p.tlfName
outer:
for {
n, ei, err =
config.KBFSOps().GetOrCreateRootNode(
ctx, name, p.public, libkbfs.MasterBranch)
switch err := err.(type) {
case nil:
// No error.
break outer
case libkbfs.TlfNameNotCanonical:
// Non-canonical name, so try again.
name = err.NameToTry
default:
// Some other error.
return nil, libkbfs.EntryInfo{}, err
}
}
for _, component := range p.tlfComponents {
cn, cei, err := config.KBFSOps().Lookup(ctx, n, component)
if err != nil {
return nil, libkbfs.EntryInfo{}, err
}
n = cn
ei = cei
}
return n, ei, nil
}
func writeHelper(ctx context.Context, config libkbfs.Config, args []string) (err error) {
flags := flag.NewFlagSet("kbfs write", flag.ContinueOnError)
append := flags.Bool("a", false, "Append to an existing file instead of truncating it.")
verbose := flags.Bool("v", false, "Print extra status output.")
flags.Parse(args)
if flags.NArg() != 1 {
return errExactlyOnePath
}
filePathStr := flags.Arg(0)
defer func() {
if err != nil {
if _, ok := err.(cannotWriteErr); !ok {
err = cannotWriteErr{filePathStr, err}
}
}
}()
p, err := makeKbfsPath(filePathStr)
if err != nil {
return
}
if p.pathType != tlfPath {
err = cannotWriteErr{filePathStr, nil}
return
}
dir, filename, err := p.dirAndBasename()
if err != nil {
return
}
if dir.pathType != tlfPath {
err = cannotWriteErr{filePathStr, nil}
return
}
parentNode, err := dir.getDirNode(ctx, config)
if err != nil {
return err
}
kbfsOps := config.KBFSOps()
noSuchFileErr := libkbfs.NoSuchNameError{Name: filename}
// The operations below are racy, but that is inherent to a
// distributed FS.
fileNode, de, err := kbfsOps.Lookup(ctx, parentNode, filename)
if err != nil && err != noSuchFileErr {
return err
}
needSync := false
var off int64
if err == noSuchFileErr {
if *verbose {
fmt.Fprintf(os.Stderr, "Creating %s\n", p)
}
fileNode, _, err = kbfsOps.CreateFile(ctx, parentNode, filename, false)
if err != nil {
return err
}
} else {
if *append {
if *verbose {
fmt.Fprintf(os.Stderr, "Appending to %s\n", p)
}
off = int64(de.Size)
} else {
if *verbose {
fmt.Fprintf(os.Stderr, "Truncating %s\n", p)
}
err = kbfsOps.Truncate(ctx, fileNode, 0)
if err != nil {
return err
}
needSync = true
}
}
nw := nodeWriter{
ctx: ctx,
kbfsOps: kbfsOps,
node: fileNode,
off: off,
verbose: *verbose,
}
written, err := io.Copy(&nw, os.Stdin)
if err != nil {
return err
}
if written > 0 {
needSync = true
}
if needSync {
if *verbose {
fmt.Fprintf(os.Stderr, "Syncing %s\n", p)
}
err := kbfsOps.Sync(ctx, fileNode)
if err != nil {
return err
}
}
return nil
}
func mkdirOne(ctx context.Context, config libkbfs.Config, dirPathStr string, createIntermediate, verbose bool) error {
p, err := makeKbfsPath(dirPathStr)
if err != nil {
return err
}
kbfsOps := config.KBFSOps()
if createIntermediate {
if p.pathType != tlfPath || len(p.tlfComponents) == 0 {
// Nothing to do.
return nil
}
tlfRoot := kbfsPath{
pathType: tlfPath,
public: p.public,
tlfName: p.tlfName,
}
tlfNode, err := tlfRoot.getDirNode(ctx, config)
if err != nil {
return err
}
currP := tlfRoot
currNode := tlfNode
for i := 0; i < len(p.tlfComponents); i++ {
dirname := p.tlfComponents[i]
currP, err = currP.join(dirname)
if err != nil {
return err
}
nextNode, err := createDir(ctx, kbfsOps, currNode, dirname, currP.String(), verbose)
if err == (libkbfs.NameExistsError{Name: dirname}) {
nextNode, _, err = kbfsOps.Lookup(ctx, currNode, dirname)
}
if err != nil {
return err
}
currNode = nextNode
}
} else {
if p.pathType != tlfPath {
return libkbfs.NameExistsError{Name: p.String()}
}
parentDir, dirname, err := p.dirAndBasename()
if err != nil {
return err
}
if parentDir.pathType != tlfPath {
// TODO: Ideally, this would error out if
// p already existed.
_, err := p.getDirNode(ctx, config)
maybePrintPath(p.String(), err, verbose)
return err
}
parentNode, err := parentDir.getDirNode(ctx, config)
if err != nil {
return err
}
_, err = createDir(ctx, kbfsOps, parentNode, dirname, p.String(), verbose)
if err != nil {
return err
}
}
return nil
}
func lsHelper(ctx context.Context, config libkbfs.Config, p kbfsPath, hasMultiple bool, handleEntry func(string, libkbfs.EntryType)) error {
kbfsOps := config.KBFSOps()
switch p.pathType {
case rootPath:
if hasMultiple {
printHeader(p)
}
handleEntry(topName, libkbfs.Dir)
return nil
case keybasePath:
if hasMultiple {
printHeader(p)
}
handleEntry(publicName, libkbfs.Dir)
handleEntry(privateName, libkbfs.Dir)
return nil
case keybaseChildPath:
favs, err := kbfsOps.GetFavorites(ctx)
if err != nil {
return err
}
if hasMultiple {
printHeader(p)
}
for _, fav := range favs {
if p.public == fav.Public {
handleEntry(fav.Name, libkbfs.Dir)
}
}
return nil
case tlfPath:
n, de, err := p.getNode(ctx, config)
if err != nil {
return err
}
if de.Type == libkbfs.Dir {
// GetDirChildren doesn't verify the dir-ness
// of the node correctly (since it ends up
// creating a new DirBlock if the node isn't
// in the cache already).
//
// TODO: Fix the above.
children, err := kbfsOps.GetDirChildren(ctx, n)
if err != nil {
return err
}
if hasMultiple {
printHeader(p)
}
for name, entryInfo := range children {
handleEntry(name, entryInfo.Type)
}
} else {
_, name, err := p.dirAndBasename()
if err != nil {
return err
}
handleEntry(name, de.Type)
}
return nil
default:
break
}
return fmt.Errorf("invalid KBFS path %s", p)
}