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all: Fix some linter errors (#5499)

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I'm working through linter complaints, these are some fixes. Broad
categories:

1) Ignore errors where we can ignore errors: add "_ = ..." construct.
you can argue that this is annoying noise, but apart from silencing the
linter it *does* serve the purpose of highlighting that an error is
being ignored. I think this is OK, because the linter highlighted some
error cases I wasn't aware of (starting CPU profiles, for example).

2) Untyped constants where we though we had set the type.

3) A real bug where we ineffectually assigned to a shadowed err.

4) Some dead code removed.

There'll be more of these, because not all packages are fixed, but the
diff was already large enough.
This commit is contained in:
Jakob Borg
2019-02-02 10:11:42 +01:00
committed by GitHub
parent 583172dc8d
commit 2111386ee4
19 changed files with 103 additions and 107 deletions
Download Patch File Download Diff File Expand all files Collapse all files

28
lib/model/folder_sendrecv.go
View File

@@ -60,14 +60,13 @@ type copyBlocksState struct {
const retainBits = fs.ModeSetgid | fs.ModeSetuid | fs.ModeSticky
var (
activity = newDeviceActivity()
errNoDevice = errors.New("peers who had this file went away, or the file has changed while syncing. will retry later")
errSymlinksUnsupported = errors.New("symlinks not supported")
errDirHasToBeScanned = errors.New("directory contains unexpected files, scheduling scan")
errDirHasIgnored = errors.New("directory contains ignored files (see ignore documentation for (?d) prefix)")
errDirNotEmpty = errors.New("directory is not empty; files within are probably ignored on connected devices only")
errNotAvailable = errors.New("no connected device has the required version of this file")
errModified = errors.New("file modified but not rescanned; will try again later")
activity = newDeviceActivity()
errNoDevice = errors.New("peers who had this file went away, or the file has changed while syncing. will retry later")
errDirHasToBeScanned = errors.New("directory contains unexpected files, scheduling scan")
errDirHasIgnored = errors.New("directory contains ignored files (see ignore documentation for (?d) prefix)")
errDirNotEmpty = errors.New("directory is not empty; files within are probably ignored on connected devices only")
errNotAvailable = errors.New("no connected device has the required version of this file")
errModified = errors.New("file modified but not rescanned; will try again later")
)
const (
@@ -882,7 +881,8 @@ func (f *sendReceiveFolder) renameFile(cur, source, target protocol.FileInfo, ig
scanChan <- target.Name
err = errModified
default:
if fi, err := scanner.CreateFileInfo(stat, target.Name, f.fs); err == nil {
var fi protocol.FileInfo
if fi, err = scanner.CreateFileInfo(stat, target.Name, f.fs); err == nil {
if !fi.IsEquivalentOptional(curTarget, f.IgnorePerms, true, protocol.LocalAllFlags) {
// Target changed
scanChan <- target.Name
@@ -1016,7 +1016,7 @@ func (f *sendReceiveFolder) handleFile(file protocol.FileInfo, copyChan chan<- c
// Otherwise, discard the file ourselves in order for the
// sharedpuller not to panic when it fails to exclusively create a
// file which already exists
osutil.InWritableDir(f.fs.Remove, f.fs, tempName)
_ = osutil.InWritableDir(f.fs.Remove, f.fs, tempName)
}
} else {
// Copy the blocks, as we don't want to shuffle them on the FileInfo
@@ -1142,7 +1142,7 @@ func (f *sendReceiveFolder) shortcutFile(file, curFile protocol.FileInfo, dbUpda
}
}
f.fs.Chtimes(file.Name, file.ModTime(), file.ModTime()) // never fails
_ = f.fs.Chtimes(file.Name, file.ModTime(), file.ModTime()) // never fails
// This may have been a conflict. We should merge the version vectors so
// that our clock doesn't move backwards.
@@ -1536,7 +1536,7 @@ func (f *sendReceiveFolder) performFinish(ignores *ignore.Matcher, file, curFile
}
// Set the correct timestamp on the new file
f.fs.Chtimes(file.Name, file.ModTime(), file.ModTime()) // never fails
_ = f.fs.Chtimes(file.Name, file.ModTime(), file.ModTime()) // never fails
// Record the updated file in the index
dbUpdateChan <- dbUpdateJob{file, dbUpdateHandleFile}
@@ -1706,7 +1706,7 @@ func (f *sendReceiveFolder) pullScannerRoutine(scanChan <-chan string) {
l.Debugln(f, "scheduling scan after pulling for", path)
scanList = append(scanList, path)
}
f.Scan(scanList)
_ = f.Scan(scanList)
}
}
@@ -1858,7 +1858,7 @@ func (f *sendReceiveFolder) deleteDir(dir string, ignores *ignore.Matcher, scanC
}
for _, del := range toBeDeleted {
f.fs.RemoveAll(del)
_ = f.fs.RemoveAll(del)
}
err := osutil.InWritableDir(f.fs.Remove, f.fs, dir)

35
lib/model/model.go
View File

@@ -258,9 +258,9 @@ func (m *Model) startFolderLocked(folder string) config.FolderType {
ffs := fs.MtimeFS()
// These are our metadata files, and they should always be hidden.
ffs.Hide(config.DefaultMarkerName)
ffs.Hide(".stversions")
ffs.Hide(".stignore")
_ = ffs.Hide(config.DefaultMarkerName)
_ = ffs.Hide(".stversions")
_ = ffs.Hide(".stignore")
p := folderFactory(m, cfg, ver, ffs)
@@ -338,7 +338,7 @@ func (m *Model) RemoveFolder(cfg config.FolderConfiguration) {
m.fmut.Lock()
m.pmut.Lock()
// Delete syncthing specific files
cfg.Filesystem().RemoveAll(config.DefaultMarkerName)
_ = cfg.Filesystem().RemoveAll(config.DefaultMarkerName)
m.tearDownFolderLocked(cfg, fmt.Errorf("removing folder %v", cfg.Description()))
// Remove it from the database
@@ -362,7 +362,7 @@ func (m *Model) tearDownFolderLocked(cfg config.FolderConfiguration, err error)
m.pmut.Unlock()
m.fmut.Unlock()
for _, id := range tokens {
m.RemoveAndWait(id, 0)
_ = m.RemoveAndWait(id, 0)
}
m.fmut.Lock()
m.pmut.Lock()
@@ -1189,7 +1189,7 @@ func (m *Model) handleIntroductions(introducerCfg config.DeviceConfiguration, cm
}
if changed {
m.cfg.SetFolder(fcfg)
_, _ = m.cfg.SetFolder(fcfg)
}
}
@@ -1246,7 +1246,7 @@ func (m *Model) handleDeintroductions(introducerCfg config.DeviceConfiguration,
cfg := m.cfg.RawCopy()
cfg.Folders = folders
cfg.Devices = devices
m.cfg.Replace(cfg)
_, _ = m.cfg.Replace(cfg)
}
return changed
@@ -1325,7 +1325,7 @@ func (m *Model) introduceDevice(device protocol.Device, introducerCfg config.Dev
newDeviceCfg.SkipIntroductionRemovals = device.SkipIntroductionRemovals
}
m.cfg.SetDevice(newDeviceCfg)
_, _ = m.cfg.SetDevice(newDeviceCfg)
}
// Closed is called when a connection has been closed
@@ -1776,8 +1776,8 @@ func (m *Model) AddConnection(conn connections.Connection, hello protocol.HelloR
if (device.Name == "" || m.cfg.Options().OverwriteRemoteDevNames) && hello.DeviceName != "" {
device.Name = hello.DeviceName
m.cfg.SetDevice(device)
m.cfg.Save()
_, _ = m.cfg.SetDevice(device)
_ = m.cfg.Save()
}
m.deviceWasSeen(deviceID)
@@ -1864,7 +1864,7 @@ func sendIndexes(conn protocol.Connection, folder string, fs *db.FileSet, ignore
// local index may update for other folders than the one we are
// sending for.
if fs.Sequence(protocol.LocalDeviceID) <= prevSequence {
sub.Poll(time.Minute)
_, _ = sub.Poll(time.Minute)
continue
}
@@ -2484,7 +2484,7 @@ func (m *Model) RestoreFolderVersions(folder string, versions map[string]time.Ti
}
}
filesystem.MkdirAll(filepath.Dir(target), 0755)
_ = filesystem.MkdirAll(filepath.Dir(target), 0755)
if err == nil {
err = osutil.Copy(filesystem, source, target)
}
@@ -2734,17 +2734,6 @@ func getChunk(data []string, skip, get int) ([]string, int, int) {
return data[skip : skip+get], 0, 0
}
func stringSliceWithout(ss []string, s string) []string {
for i := range ss {
if ss[i] == s {
copy(ss[i:], ss[i+1:])
ss = ss[:len(ss)-1]
return ss
}
}
return ss
}
func readOffsetIntoBuf(fs fs.Filesystem, file string, offset int64, buf []byte) error {
fd, err := fs.Open(file)
if err != nil {