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data_types.go
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// Copyright 2016 Keybase Inc. All rights reserved.
// Use of this source code is governed by a BSD
// license that can be found in the LICENSE file.
package libkbfs
import (
"context"
"encoding/json"
"fmt"
"strings"
"time"
"github.com/keybase/client/go/kbfs/data"
"github.com/keybase/client/go/kbfs/kbfscodec"
"github.com/keybase/client/go/kbfs/kbfscrypto"
"github.com/keybase/client/go/kbfs/kbfsmd"
"github.com/keybase/client/go/kbfs/tlf"
kbname "github.com/keybase/client/go/kbun"
kbgitkbfs "github.com/keybase/client/go/protocol/kbgitkbfs1"
"github.com/keybase/client/go/protocol/keybase1"
"github.com/keybase/go-codec/codec"
"github.com/pkg/errors"
)
// disallowedPrefixes must not be allowed at the beginning of any
// user-created directory entry name.
var disallowedPrefixes = [...]string{".kbfs"}
// EncryptedTLFCryptKeyClientAndEphemeral has what's needed to
// request a client half decryption.
type EncryptedTLFCryptKeyClientAndEphemeral struct {
// PublicKey contains the wrapped Key ID of the public key
PubKey kbfscrypto.CryptPublicKey
// ClientHalf contains the encrypted client half of the TLF key
ClientHalf kbfscrypto.EncryptedTLFCryptKeyClientHalf
// EPubKey contains the ephemeral public key used to encrypt ClientHalf
EPubKey kbfscrypto.TLFEphemeralPublicKey
}
const (
defaultClientMetadataVer kbfsmd.MetadataVer = kbfsmd.ImplicitTeamsVer
)
// BlockChanges tracks the set of blocks that changed in a commit, and
// the operations that made the changes. It might consist of just a
// BlockPointer if the list is too big to embed in the MD structure
// directly.
//
// If this commit represents a conflict-resolution merge, which may
// comprise multiple individual operations, then there will be an
// ordered list of the changes for individual operations. This lets
// the notification and conflict resolution strategies figure out the
// difference between a renamed file and a modified file, for example.
//
// NOTE: Don't add or modify anything in this struct without
// considering how old clients will handle them.
type BlockChanges struct {
// If this is set, the actual changes are stored in a block (where
// the block contains a serialized version of BlockChanges)
//
// Ideally, we'd omit Info if it's empty. However, old clients
// rely on encoded BlockChanges always having an encoded Info,
// so that decoding into an existing BlockChanges object
// clobbers any existing Info, so we can't omit Info until all
// clients have upgraded to a version that explicitly clears
// Info on decode, and we've verified that there's nothing
// else that relies on Info always being filled.
Info data.BlockInfo `codec:"p"`
// An ordered list of operations completed in this update
Ops opsList `codec:"o,omitempty"`
// Estimate the number of bytes that this set of changes will take to encode
sizeEstimate uint64
}
// Equals returns true if the given BlockChanges is equal to this
// BlockChanges. Currently does not check for equality at the
// operation level.
func (bc BlockChanges) Equals(other BlockChanges) bool {
if bc.Info != other.Info || len(bc.Ops) != len(other.Ops) ||
(bc.sizeEstimate != 0 && other.sizeEstimate != 0 &&
bc.sizeEstimate != other.sizeEstimate) {
return false
}
// TODO: check for op equality?
return true
}
// AddRefBlock adds the newly-referenced block to this BlockChanges
// and updates the size estimate.
func (bc *BlockChanges) AddRefBlock(ptr data.BlockPointer) {
if bc.sizeEstimate != 0 {
panic("Can't alter block changes after the size is estimated")
}
bc.Ops[len(bc.Ops)-1].AddRefBlock(ptr)
}
// AddUnrefBlock adds the newly unreferenced block to this BlockChanges
// and updates the size estimate.
func (bc *BlockChanges) AddUnrefBlock(ptr data.BlockPointer) {
if bc.sizeEstimate != 0 {
panic("Can't alter block changes after the size is estimated")
}
bc.Ops[len(bc.Ops)-1].AddUnrefBlock(ptr)
}
// AddUpdate adds the newly updated block to this BlockChanges
// and updates the size estimate.
func (bc *BlockChanges) AddUpdate(oldPtr data.BlockPointer, newPtr data.BlockPointer) {
if bc.sizeEstimate != 0 {
panic("Can't alter block changes after the size is estimated")
}
bc.Ops[len(bc.Ops)-1].AddUpdate(oldPtr, newPtr)
}
// AddOp starts a new operation for this BlockChanges. Subsequent
// Add* calls will populate this operation.
func (bc *BlockChanges) AddOp(o op) {
if bc.sizeEstimate != 0 {
panic("Can't alter block changes after the size is estimated")
}
bc.Ops = append(bc.Ops, o)
}
// SizeEstimate calculates the estimated size of the encoded version
// of this BlockChanges.
func (bc *BlockChanges) SizeEstimate() uint64 {
if bc.sizeEstimate == 0 {
for _, op := range bc.Ops {
numPtrs := len(op.Refs()) + len(op.Unrefs()) +
2*len(op.allUpdates())
bc.sizeEstimate +=
uint64(numPtrs)*data.BPSize + op.SizeExceptUpdates()
}
}
return bc.sizeEstimate
}
// Excl indicates whether O_EXCL is set on a fuse call
type Excl bool
const (
// NoExcl indicates O_EXCL is not set
NoExcl Excl = false
// WithExcl indicates O_EXCL is set
WithExcl Excl = true
)
func (o Excl) String() string {
switch o {
case NoExcl:
return "O_EXCL unset"
case WithExcl:
return "O_EXCL set"
default:
return "<invalid Excl>"
}
}
// ReportedError represents an error reported by KBFS.
type ReportedError struct {
Time time.Time
Error error
Stack []uintptr
}
// OpSummary describes the changes performed by a single op, and is
// suitable for encoding directly as JSON.
type OpSummary struct {
Op string
Refs []string
Unrefs []string
Updates map[string]string
}
// UpdateSummary describes the operations done by a single MD revision.
type UpdateSummary struct {
Revision kbfsmd.Revision
Date time.Time
Writer string
LiveBytes uint64 // the "DiskUsage" for the TLF as of this revision
Ops []OpSummary
RootBlockID string
}
// TLFUpdateHistory gives all the summaries of all updates in a TLF's
// history.
type TLFUpdateHistory struct {
ID string
Name string
Updates []UpdateSummary
}
// writerInfo is the keybase UID and device (represented by its
// verifying key) that generated the operation at the given revision.
type writerInfo struct {
uid keybase1.UID
key kbfscrypto.VerifyingKey
revision kbfsmd.Revision
offline keybase1.OfflineAvailability
}
// ErrorModeType indicates what type of operation was being attempted
// when an error was reported.
type ErrorModeType int
const (
// ReadMode indicates that an error happened while trying to read.
ReadMode ErrorModeType = iota
// WriteMode indicates that an error happened while trying to write.
WriteMode
)
// NodeMetadata has metadata about a node needed for higher level operations.
type NodeMetadata struct {
// LastWriterUnverified is the last writer of this
// node according to the last writer of the TLF.
// A more thorough check is possible in the future.
LastWriterUnverified kbname.NormalizedUsername
BlockInfo data.BlockInfo
PrefetchStatus PrefetchStatus
PrefetchProgress *PrefetchProgress `json:",omitempty"`
}
// FavoritesOp defines an operation related to favorites.
type FavoritesOp int
const (
_ FavoritesOp = iota
// FavoritesOpAdd means TLF should be added to favorites.
FavoritesOpAdd
// FavoritesOpAddNewlyCreated means TLF should be added to favorites, and it
// should be considered newly created.
FavoritesOpAddNewlyCreated
// FavoritesOpRemove means TLF should be removed from favorites.
FavoritesOpRemove
// FavoritesOpNoChange means no changes regarding to favorites should be made.
FavoritesOpNoChange
)
// RekeyResult represents the result of an rekey operation.
type RekeyResult struct {
DidRekey bool
NeedsPaperKey bool
}
// InitModeType indicates how KBFS should configure itself at runtime.
type InitModeType int
const (
// InitDefault is the normal mode for when KBFS data will be read
// and written.
InitDefault InitModeType = iota
// InitMinimal is for when KBFS will only be used as a MD lookup
// layer (e.g., for chat on mobile).
InitMinimal
// InitSingleOp is a mode for when KBFS is only needed for a
// single logical operation; no rekeys or update subscriptions is
// needed, and some naming restrictions are lifted (e.g., `.kbfs_`
// filenames are allowed).
InitSingleOp
// InitConstrained is a mode where KBFS reads and writes data, but
// constrains itself to using fewer resources (e.g. on mobile).
InitConstrained
// InitMemoryLimited is a mode where KBFS reads and writes data, but
// constrains its memory use even further.
InitMemoryLimited
)
func (im InitModeType) String() string {
switch im {
case InitDefault:
return InitDefaultString
case InitMinimal:
return InitMinimalString
case InitSingleOp:
return InitSingleOpString
case InitConstrained:
return InitConstrainedString
case InitMemoryLimited:
return InitMemoryLimitedString
default:
return "unknown"
}
}
// PrefetchStatus denotes the prefetch status of a block.
type PrefetchStatus int
// ErrUnrecognizedPrefetchStatus is returned when trying to unmarshal a
// prefetch status from JSON if the prefetch status is unrecognized.
var ErrUnrecognizedPrefetchStatus = errors.New(
"Unrecognized PrefetchStatus value")
const (
// NoPrefetch represents an entry that hasn't been prefetched.
NoPrefetch PrefetchStatus = iota
// TriggeredPrefetch represents a block for which prefetching has been
// triggered, but the full tree has not been completed.
TriggeredPrefetch
// FinishedPrefetch represents a block whose full subtree is synced.
FinishedPrefetch
)
func (s PrefetchStatus) String() string {
switch s {
case NoPrefetch:
return "NoPrefetch"
case TriggeredPrefetch:
return "TriggeredPrefetch"
case FinishedPrefetch:
return "FinishedPrefetch"
}
return "Unknown"
}
// ToProtocolStatus returns a prefetch status that can be send over
// the keybase1 protocol.
func (s PrefetchStatus) ToProtocolStatus() keybase1.PrefetchStatus {
switch s {
case NoPrefetch:
return keybase1.PrefetchStatus_NOT_STARTED
case TriggeredPrefetch:
return keybase1.PrefetchStatus_IN_PROGRESS
case FinishedPrefetch:
return keybase1.PrefetchStatus_COMPLETE
default:
panic(fmt.Sprintf("Unknown prefetch status: %s", s))
}
}
// MarshalJSON converts a PrefetchStatus to JSON
func (s PrefetchStatus) MarshalJSON() ([]byte, error) {
return json.Marshal(s.String())
}
// UnmarshalJSON converts a PrefetchStatus from JSON
func (s *PrefetchStatus) UnmarshalJSON(b []byte) error {
var st string
if err := json.Unmarshal(b, &st); err != nil {
return err
}
switch st {
default:
return ErrUnrecognizedPrefetchStatus
case "NoPrefetch":
*s = NoPrefetch
case "TriggeredPrefetch":
*s = TriggeredPrefetch
case "FinishedPrefetch":
*s = FinishedPrefetch
}
return nil
}
// ToProtocol transforms a PrefetchStatus to a kbgitkbfs.PrefetchStatus, while
// validating its value.
func (s PrefetchStatus) ToProtocol() kbgitkbfs.PrefetchStatus {
protocolPrefetchStatus := kbgitkbfs.PrefetchStatus(s)
_, ok := kbgitkbfs.PrefetchStatusRevMap[protocolPrefetchStatus]
if !ok {
panic("Invalid prefetch status for protocol")
}
return protocolPrefetchStatus
}
// PrefetchStatusFromProtocol transforms a kbgitkbfs.PrefetchStatus to a
// PrefetchStatus, while validating its value.
func PrefetchStatusFromProtocol(
protocolPrefetchStatus kbgitkbfs.PrefetchStatus) PrefetchStatus {
s := PrefetchStatus(protocolPrefetchStatus)
switch s {
case NoPrefetch:
case TriggeredPrefetch:
case FinishedPrefetch:
default:
panic("Invalid prefetch status from protocol")
}
return s
}
// FolderSyncEncryptedPartialPaths describes an encrypted block
// containing the paths of a partial sync config.
type FolderSyncEncryptedPartialPaths struct {
Ptr data.BlockPointer
Buf []byte
ServerHalf kbfscrypto.BlockCryptKeyServerHalf
}
// FolderSyncConfig is the on-disk representation for a TLF sync
// config.
type FolderSyncConfig struct {
Mode keybase1.FolderSyncMode `codec:"mode" json:"mode"`
Paths FolderSyncEncryptedPartialPaths `codec:"paths" json:"paths"`
TlfPath string `codec:"tlfpath" json:"tlfpath"`
}
type syncPathList struct {
// Paths is a list of files and directories within a TLF that are
// configured to be synced to the local device.
Paths []string
codec.UnknownFieldSetHandler
}
func (spl syncPathList) makeBlock(codec kbfscodec.Codec) (data.Block, error) {
buf, err := codec.Encode(spl)
if err != nil {
return nil, err
}
b := data.NewFileBlock().(*data.FileBlock)
b.Contents = buf
return b, nil
}
func syncPathListFromBlock(codec kbfscodec.Codec, b *data.FileBlock) (
paths syncPathList, err error) {
err = codec.Decode(b.Contents, &paths)
if err != nil {
return syncPathList{}, err
}
return paths, nil
}
// BlockMetadataValue represents the value stored in the block metadata
// store. This is usually locally stored, and is separate from block metadata
// stored on bserver.
type BlockMetadataValue struct {
// Xattr contains all xattrs stored in association with the block. This is
// useful for stuff that's contingent to content of the block, such as
// quarantine data.
Xattr map[XattrType][]byte
}
// BlockMetadataUpdater defines a function to update a BlockMetadataValue.
type BlockMetadataUpdater func(*BlockMetadataValue) error
// BlockRequestAction indicates what kind of action should be taken
// after successfully fetching a block. This is a bit mask filled
// with `blockRequestFlag`s.
type BlockRequestAction int
const (
// These unexported actions are really flags that are combined to
// make the other actions below.
blockRequestTrackedInPrefetch BlockRequestAction = 1 << iota
blockRequestPrefetch
blockRequestSync
blockRequestStopIfFull
blockRequestDeepSync
blockRequestDelayCacheCheck
// BlockRequestSolo indicates that no action should take place
// after fetching the block. However, a TLF that is configured to
// be fully-synced will still be prefetched and synced.
BlockRequestSolo BlockRequestAction = 0
// BlockRequestSoloWithSync indicates the the requested block
// should be put in the sync cache, but no prefetching should be
// triggered.
BlockRequestSoloWithSync BlockRequestAction = blockRequestSync
// BlockRequestPrefetchTail indicates that the block is being
// tracked in the prefetcher, but shouldn't kick off any more
// prefetches.
BlockRequestPrefetchTail BlockRequestAction = blockRequestTrackedInPrefetch
// BlockRequestPrefetchTailWithSync indicates that the block is
// being tracked in the prefetcher and goes in the sync cache, but
// shouldn't kick off any more prefetches.
BlockRequestPrefetchTailWithSync BlockRequestAction = blockRequestTrackedInPrefetch | blockRequestSync
// BlockRequestWithPrefetch indicates that a prefetch should be
// triggered after fetching the block. If a TLF is configured to
// be fully-synced, the block will still be put in the sync cache.
BlockRequestWithPrefetch BlockRequestAction = blockRequestTrackedInPrefetch | blockRequestPrefetch
// BlockRequestWithSyncAndPrefetch indicates that the block should
// be stored in the sync cache after fetching it, as well as
// triggering a prefetch of one level of child blocks (and the
// syncing doesn't propagate to the child blocks).
BlockRequestWithSyncAndPrefetch BlockRequestAction = blockRequestTrackedInPrefetch | blockRequestPrefetch | blockRequestSync
// BlockRequestPrefetchUntilFull prefetches starting from the
// given block (but does not sync the blocks) until the working
// set cache is full, and then it stops prefetching.
BlockRequestPrefetchUntilFull BlockRequestAction = blockRequestTrackedInPrefetch | blockRequestPrefetch | blockRequestStopIfFull
// BlockRequestWithDeepSync is the same as above, except both the
// prefetching and the sync flags propagate to the child, so the
// whole tree root at the block is prefetched and synced.
BlockRequestWithDeepSync BlockRequestAction = blockRequestTrackedInPrefetch | blockRequestPrefetch | blockRequestSync | blockRequestDeepSync
)
func (bra BlockRequestAction) String() string {
if bra.DeepSync() {
return "deep-sync"
}
if bra == BlockRequestSolo {
return "solo"
}
attrs := make([]string, 0, 3)
if bra.prefetch() {
attrs = append(attrs, "prefetch")
} else if bra.PrefetchTracked() {
attrs = append(attrs, "prefetch-tracked")
}
if bra.Sync() {
attrs = append(attrs, "sync")
}
if bra.StopIfFull() {
attrs = append(attrs, "stop-if-full")
}
if bra.DelayCacheCheck() {
attrs = append(attrs, "delay-cache-check")
}
return strings.Join(attrs, "|")
}
// Combine returns a new action by taking `other` into account.
func (bra BlockRequestAction) Combine(
other BlockRequestAction) BlockRequestAction {
combined := bra | other
// If the actions don't agree on stop-if-full, we should remove it
// from the combined result.
if bra.StopIfFull() != other.StopIfFull() {
combined &^= blockRequestStopIfFull
}
return combined
}
func (bra BlockRequestAction) prefetch() bool {
return bra&blockRequestPrefetch > 0
}
// Prefetch returns true if the action indicates the block should
// trigger a prefetch.
func (bra BlockRequestAction) Prefetch(block data.Block) bool {
// When syncing, always prefetch child blocks of an indirect
// block, since it makes no sense to sync just part of a
// multi-block object.
if block.IsIndirect() && bra.Sync() {
return true
}
return bra.prefetch()
}
// PrefetchTracked returns true if this block is being tracked by the
// prefetcher.
func (bra BlockRequestAction) PrefetchTracked() bool {
return bra.prefetch() || bra&blockRequestTrackedInPrefetch > 0
}
// Sync returns true if the action indicates the block should go into
// the sync cache.
func (bra BlockRequestAction) Sync() bool {
return bra&blockRequestSync > 0
}
// DeepSync returns true if the action indicates a deep-syncing of the
// block tree rooted at the given block.
func (bra BlockRequestAction) DeepSync() bool {
// The delayed cache check doesn't affect deep-syncing.
return bra.WithoutDelayedCacheCheckAction() == BlockRequestWithDeepSync
}
// DeepPrefetch returns true if the prefetcher should continue
// prefetching the children of this block all the way to the leafs of
// the tree.
func (bra BlockRequestAction) DeepPrefetch() bool {
return bra.DeepSync() || bra == BlockRequestPrefetchUntilFull
}
// ChildAction returns the action that should propagate down to any
// children of this block.
func (bra BlockRequestAction) ChildAction(block data.Block) BlockRequestAction {
// When syncing, always prefetch child blocks of an indirect
// block, since it makes no sense to sync just part of a
// multi-block object.
if bra.DeepPrefetch() || (block.IsIndirect() && bra.Sync()) {
return bra
}
return bra &^ (blockRequestPrefetch | blockRequestSync)
}
// SoloAction returns a solo-fetch action based on `bra` (e.g.,
// preserving the sync bit but nothing else).
func (bra BlockRequestAction) SoloAction() BlockRequestAction {
return bra & blockRequestSync
}
// AddSync returns a new action that adds syncing in addition to the
// original request. For prefetch requests, it returns a deep-sync
// request (unlike `Combine`, which just adds the regular sync bit).
func (bra BlockRequestAction) AddSync() BlockRequestAction {
if bra.prefetch() {
return BlockRequestWithDeepSync
}
// If the prefetch bit is NOT yet set (as when some component
// makes a solo request, for example), we should not kick off a
// deep sync since the action explicit prohibits any more blocks
// being fetched (and doing so will mess up sensitive tests).
return bra | blockRequestSync
}
// AddPrefetch returns a new action that adds prefetching in addition
// to the original request. For sync requests, it returns a
// deep-sync request (unlike `Combine`, which just adds the regular
// prefetch bit).
func (bra BlockRequestAction) AddPrefetch() BlockRequestAction {
if bra.Sync() {
return BlockRequestWithDeepSync
}
return bra | blockRequestPrefetch | blockRequestTrackedInPrefetch
}
// CacheType returns the disk block cache type that should be used,
// according to the type of action.
func (bra BlockRequestAction) CacheType() DiskBlockCacheType {
if bra.Sync() {
return DiskBlockSyncCache
}
return DiskBlockAnyCache
}
// StopIfFull returns true if prefetching should stop for good (i.e.,
// not get rescheduled) when the corresponding disk cache is full.
func (bra BlockRequestAction) StopIfFull() bool {
return bra&blockRequestStopIfFull > 0
}
// AddStopIfFull returns a new action that adds the "stop-if-full"
// behavior in addition to the original request.
func (bra BlockRequestAction) AddStopIfFull() BlockRequestAction {
return bra | blockRequestStopIfFull
}
// DelayedCacheCheckAction returns a new action that adds the
// delayed-cache-check feature to `bra`.
func (bra BlockRequestAction) DelayedCacheCheckAction() BlockRequestAction {
return bra | blockRequestDelayCacheCheck
}
// WithoutDelayedCacheCheckAction returns a new action that strips the
// delayed-cache-check feature from `bra`.
func (bra BlockRequestAction) WithoutDelayedCacheCheckAction() BlockRequestAction {
return bra &^ blockRequestDelayCacheCheck
}
// DelayCacheCheck returns true if the disk cache check for a block
// request should be delayed until the request is being serviced by a
// block worker, in order to improve the performance of the inline
// `Request` call.
func (bra BlockRequestAction) DelayCacheCheck() bool {
return bra&blockRequestDelayCacheCheck > 0
}
// PrefetchProgress tracks the number of bytes fetched for the block
// tree rooted at a given block, along with the known total number of
// bytes in that tree, and the start time of the prefetch. Note that
// the total can change over time as more blocks are downloaded.
type PrefetchProgress struct {
SubtreeBytesFetched uint64
SubtreeBytesTotal uint64
Start time.Time
}
// ToProtocolProgress creates a progress suitable of being sent over
// the keybase1 protocol to the service.
func (p PrefetchProgress) ToProtocolProgress(clock Clock) (
out keybase1.PrefetchProgress) {
out.BytesFetched = int64(p.SubtreeBytesFetched)
out.BytesTotal = int64(p.SubtreeBytesTotal)
out.Start = keybase1.ToTime(p.Start)
if out.BytesTotal == 0 || out.Start == 0 {
return out
}
timeRunning := clock.Now().Sub(p.Start)
fracDone := float64(out.BytesFetched) / float64(out.BytesTotal)
totalTimeEstimate := time.Duration(float64(timeRunning) / fracDone)
endEstimate := p.Start.Add(totalTimeEstimate)
out.EndEstimate = keybase1.ToTime(endEstimate)
return out
}
// ToProtocolStatus creates a status suitable of being sent over the
// keybase1 protocol to the service. It never generates NOT_STARTED
// since that doesn't make sense once you already have a prefetch
// progress created.
func (p PrefetchProgress) ToProtocolStatus() keybase1.PrefetchStatus {
if p.SubtreeBytesTotal == p.SubtreeBytesFetched ||
p.SubtreeBytesTotal == 0 {
return keybase1.PrefetchStatus_COMPLETE
}
return keybase1.PrefetchStatus_IN_PROGRESS
}
type parsedPath struct {
tlfType tlf.Type
tlfName string
rawInTlfPath string
rawFullPath userPath
}
func parsePath(path userPath) (parsed *parsedPath, err error) {
if !strings.HasPrefix(string(path), "/keybase") {
return nil, errors.New("not a KBFS path")
}
parsed = &parsedPath{tlfType: tlf.Unknown, rawFullPath: path}
elems := strings.Split(string(path[1:]), "/")
if len(elems) < 2 {
return parsed, nil
}
parsed.tlfType, err = tlf.ParseTlfTypeFromPath(elems[1])
if err != nil {
return nil, err
}
if len(elems) < 3 {
return parsed, nil
}
parsed.tlfName = elems[2]
if len(elems) == 3 {
parsed.rawInTlfPath = "/"
return parsed, nil
}
parsed.rawInTlfPath = "/" + strings.Join(elems[3:], "/")
return parsed, nil
}
func (p *parsedPath) getRootNode(ctx context.Context, config Config) (Node, error) {
if p.tlfType == tlf.Unknown || len(p.tlfName) == 0 {
return nil, errors.New("path does not have a TLF")
}
tlfHandle, err := GetHandleFromFolderNameAndType(
ctx, config.KBPKI(), config.MDOps(), config, p.tlfName, p.tlfType)
if err != nil {
return nil, err
}
branch := data.MasterBranch
if tlfHandle.IsLocalConflict() {
b, ok := data.MakeConflictBranchName(tlfHandle)
if ok {
branch = b
}
}
// Get the root node first to initialize the TLF.
node, _, err := config.KBFSOps().GetRootNode(
ctx, tlfHandle, branch)
if err != nil {
return nil, err
}
return node, nil
}
func (p *parsedPath) getFolderBranch(ctx context.Context, config Config) (data.FolderBranch, error) {
node, err := p.getRootNode(ctx, config)
if err != nil {
return data.FolderBranch{}, err
}
if node == nil {
return data.FolderBranch{}, nil
}
return node.GetFolderBranch(), nil
}