Run staticcheck on CI (#16170)

Makefile

@@ -22,6 +22,7 @@ getdeps: ## fetch necessary dependencies
 	@echo "Installing golangci-lint" && curl -sSfL https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh | sh -s -- -b $(GOPATH)/bin
 	@echo "Installing msgp" && go install -v github.com/tinylib/msgp@f3635b96e4838a6c773babb65ef35297fe5fe2f9
 	@echo "Installing stringer" && go install -v golang.org/x/tools/cmd/stringer@latest
+	@echo "Installing staticcheck" && go install honnef.co/go/tools/cmd/staticcheck@latest
 
 crosscompile: ## cross compile minio
 	@(env bash $(PWD)/buildscripts/cross-compile.sh)
@@ -35,6 +36,7 @@ check-gen: ## check for updated autogenerated files
 lint: ## runs golangci-lint suite of linters
 	@echo "Running $@ check"
 	@${GOPATH}/bin/golangci-lint run --build-tags kqueue --timeout=10m --config ./.golangci.yml
+	@${GOPATH}/bin/staticcheck --tests=false ./...
 
 check: test
 test: verifiers build ## builds minio, runs linters, tests

cmd/admin-server-info.go

@@ -34,7 +34,6 @@ import (
 // getLocalServerProperty - returns madmin.ServerProperties for only the
 // local endpoints from given list of endpoints
 func getLocalServerProperty(endpointServerPools EndpointServerPools, r *http.Request) madmin.ServerProperties {
-	var localEndpoints Endpoints
 	addr := globalLocalNodeName
 	if r != nil {
 		addr = r.Host
@@ -52,7 +51,6 @@ func getLocalServerProperty(endpointServerPools EndpointServerPools, r *http.Req
 			if endpoint.IsLocal {
 				// Only proceed for local endpoints
 				network[nodeName] = string(madmin.ItemOnline)
-				localEndpoints = append(localEndpoints, endpoint)
 				continue
 			}
 			_, present := network[nodeName]

cmd/api-errors.go

@@ -2267,11 +2267,7 @@ func toAPIError(ctx context.Context, err error) APIError {
 		// their internal error types.
 		switch e := err.(type) {
 		case batchReplicationJobError:
-			apiErr = APIError{
-				Code:           e.Code,
-				Description:    e.Description,
-				HTTPStatusCode: e.HTTPStatusCode,
-			}
+			apiErr = APIError(e)
 		case InvalidArgument:
 			apiErr = APIError{
 				Code:           "InvalidArgument",

cmd/bucket-lifecycle.go

@@ -540,7 +540,7 @@ type RestoreObjectRequest struct {
 	XMLName          xml.Name           `xml:"http://s3.amazonaws.com/doc/2006-03-01/ RestoreRequest" json:"-"`
 	Days             int                `xml:"Days,omitempty"`
 	Type             RestoreRequestType `xml:"Type,omitempty"`
-	Tier             string             `xml:"Tier,-"`
+	Tier             string             `xml:"Tier"`
 	Description      string             `xml:"Description,omitempty"`
 	SelectParameters *SelectParameters  `xml:"SelectParameters,omitempty"`
 	OutputLocation   OutputLocation     `xml:"OutputLocation,omitempty"`

cmd/bucket-replication.go

@@ -36,7 +36,6 @@ import (
 	"github.com/dustin/go-humanize"
 	"github.com/minio/madmin-go"
 	"github.com/minio/minio-go/v7"
-	miniogo "github.com/minio/minio-go/v7"
 	"github.com/minio/minio-go/v7/pkg/encrypt"
 	"github.com/minio/minio-go/v7/pkg/tags"
 	"github.com/minio/minio/internal/bucket/bandwidth"
@@ -568,9 +567,9 @@ func replicateDeleteToTarget(ctx context.Context, dobj DeletedObjectReplicationI
 	}
 	// early return if already replicated delete marker for existing object replication/ healing delete markers
 	if dobj.DeleteMarkerVersionID != "" {
-		toi, err := tgt.StatObject(ctx, tgt.Bucket, dobj.ObjectName, miniogo.StatObjectOptions{
+		toi, err := tgt.StatObject(ctx, tgt.Bucket, dobj.ObjectName, minio.StatObjectOptions{
 			VersionID: versionID,
-			Internal: miniogo.AdvancedGetOptions{
+			Internal: minio.AdvancedGetOptions{
 				ReplicationProxyRequest:           "false",
 				IsReplicationReadyForDeleteMarker: true,
 			},
@@ -589,12 +588,12 @@ func replicateDeleteToTarget(ctx context.Context, dobj DeletedObjectReplicationI
 		}
 	}
 
-	rmErr := tgt.RemoveObject(ctx, tgt.Bucket, dobj.ObjectName, miniogo.RemoveObjectOptions{
+	rmErr := tgt.RemoveObject(ctx, tgt.Bucket, dobj.ObjectName, minio.RemoveObjectOptions{
 		VersionID: versionID,
-		Internal: miniogo.AdvancedRemoveOptions{
+		Internal: minio.AdvancedRemoveOptions{
 			ReplicationDeleteMarker: dobj.DeleteMarkerVersionID != "",
 			ReplicationMTime:        dobj.DeleteMarkerMTime.Time,
-			ReplicationStatus:       miniogo.ReplicationStatusReplica,
+			ReplicationStatus:       minio.ReplicationStatusReplica,
 			ReplicationRequest:      true, // always set this to distinguish between `mc mirror` replication and serverside
 		},
 	})
@@ -680,7 +679,7 @@ func (m caseInsensitiveMap) Lookup(key string) (string, bool) {
 	return "", false
 }
 
-func putReplicationOpts(ctx context.Context, sc string, objInfo ObjectInfo) (putOpts miniogo.PutObjectOptions, err error) {
+func putReplicationOpts(ctx context.Context, sc string, objInfo ObjectInfo) (putOpts minio.PutObjectOptions, err error) {
 	meta := make(map[string]string)
 	for k, v := range objInfo.UserDefined {
 		if strings.HasPrefix(strings.ToLower(k), ReservedMetadataPrefixLower) {
@@ -695,14 +694,14 @@ func putReplicationOpts(ctx context.Context, sc string, objInfo ObjectInfo) (put
 	if sc == "" && (objInfo.StorageClass == storageclass.STANDARD || objInfo.StorageClass == storageclass.RRS) {
 		sc = objInfo.StorageClass
 	}
-	putOpts = miniogo.PutObjectOptions{
+	putOpts = minio.PutObjectOptions{
 		UserMetadata:    meta,
 		ContentType:     objInfo.ContentType,
 		ContentEncoding: objInfo.ContentEncoding,
 		StorageClass:    sc,
-		Internal: miniogo.AdvancedPutOptions{
+		Internal: minio.AdvancedPutOptions{
 			SourceVersionID:    objInfo.VersionID,
-			ReplicationStatus:  miniogo.ReplicationStatusReplica,
+			ReplicationStatus:  minio.ReplicationStatusReplica,
 			SourceMTime:        objInfo.ModTime,
 			SourceETag:         objInfo.ETag,
 			ReplicationRequest: true, // always set this to distinguish between `mc mirror` replication and serverside
@@ -735,7 +734,7 @@ func putReplicationOpts(ctx context.Context, sc string, objInfo ObjectInfo) (put
 		putOpts.CacheControl = cc
 	}
 	if mode, ok := lkMap.Lookup(xhttp.AmzObjectLockMode); ok {
-		rmode := miniogo.RetentionMode(mode)
+		rmode := minio.RetentionMode(mode)
 		putOpts.Mode = rmode
 	}
 	if retainDateStr, ok := lkMap.Lookup(xhttp.AmzObjectLockRetainUntilDate); ok {
@@ -758,7 +757,7 @@ func putReplicationOpts(ctx context.Context, sc string, objInfo ObjectInfo) (put
 		putOpts.Internal.RetentionTimestamp = retTimestamp
 	}
 	if lhold, ok := lkMap.Lookup(xhttp.AmzObjectLockLegalHold); ok {
-		putOpts.LegalHold = miniogo.LegalHoldStatus(lhold)
+		putOpts.LegalHold = minio.LegalHoldStatus(lhold)
 		// set legalhold timestamp in opts
 		lholdTimestamp := objInfo.ModTime
 		if lholdTmstampStr, ok := objInfo.UserDefined[ReservedMetadataPrefixLower+ObjectLockLegalHoldTimestamp]; ok {
@@ -1126,7 +1125,7 @@ func (ri ReplicateObjectInfo) replicateObject(ctx context.Context, objectAPI Obj
 	rinfo.Size = size
 	rinfo.ReplicationAction = rAction
 	// use core client to avoid doing multipart on PUT
-	c := &miniogo.Core{Client: tgt.Client}
+	c := &minio.Core{Client: tgt.Client}
 
 	putOpts, err := putReplicationOpts(ctx, tgt.StorageClass, objInfo)
 	if err != nil {
@@ -1271,9 +1270,9 @@ func (ri ReplicateObjectInfo) replicateAll(ctx context.Context, objectAPI Object
 	}()
 
 	rAction = replicateAll
-	oi, cerr := tgt.StatObject(ctx, tgt.Bucket, object, miniogo.StatObjectOptions{
+	oi, cerr := tgt.StatObject(ctx, tgt.Bucket, object, minio.StatObjectOptions{
 		VersionID: objInfo.VersionID,
-		Internal: miniogo.AdvancedGetOptions{
+		Internal: minio.AdvancedGetOptions{
 			ReplicationProxyRequest: "false",
 		},
 	})
@@ -1309,16 +1308,16 @@ func (ri ReplicateObjectInfo) replicateAll(ctx context.Context, objectAPI Object
 	rinfo.Size = size
 	rinfo.ReplicationAction = rAction
 	// use core client to avoid doing multipart on PUT
-	c := &miniogo.Core{Client: tgt.Client}
+	c := &minio.Core{Client: tgt.Client}
 	if rAction != replicateAll {
 		// replicate metadata for object tagging/copy with metadata replacement
-		srcOpts := miniogo.CopySrcOptions{
+		srcOpts := minio.CopySrcOptions{
 			Bucket:    tgt.Bucket,
 			Object:    object,
 			VersionID: objInfo.VersionID,
 		}
-		dstOpts := miniogo.PutObjectOptions{
-			Internal: miniogo.AdvancedPutOptions{
+		dstOpts := minio.PutObjectOptions{
+			Internal: minio.AdvancedPutOptions{
 				SourceVersionID:    objInfo.VersionID,
 				ReplicationRequest: true, // always set this to distinguish between `mc mirror` replication and serverside
 			},
@@ -1372,8 +1371,8 @@ func (ri ReplicateObjectInfo) replicateAll(ctx context.Context, objectAPI Object
 	return
 }
 
-func replicateObjectWithMultipart(ctx context.Context, c *miniogo.Core, bucket, object string, r io.Reader, objInfo ObjectInfo, opts miniogo.PutObjectOptions) (err error) {
-	var uploadedParts []miniogo.CompletePart
+func replicateObjectWithMultipart(ctx context.Context, c *minio.Core, bucket, object string, r io.Reader, objInfo ObjectInfo, opts minio.PutObjectOptions) (err error) {
+	var uploadedParts []minio.CompletePart
 	uploadID, err := c.NewMultipartUpload(context.Background(), bucket, object, opts)
 	if err != nil {
 		return err
@@ -1399,7 +1398,7 @@ func replicateObjectWithMultipart(ctx context.Context, c *miniogo.Core, bucket,
 
 	var (
 		hr    *hash.Reader
-		pInfo miniogo.ObjectPart
+		pInfo minio.ObjectPart
 	)
 
 	for _, partInfo := range objInfo.Parts {
@@ -1414,13 +1413,13 @@ func replicateObjectWithMultipart(ctx context.Context, c *miniogo.Core, bucket,
 		if pInfo.Size != partInfo.ActualSize {
 			return fmt.Errorf("Part size mismatch: got %d, want %d", pInfo.Size, partInfo.ActualSize)
 		}
-		uploadedParts = append(uploadedParts, miniogo.CompletePart{
+		uploadedParts = append(uploadedParts, minio.CompletePart{
 			PartNumber: pInfo.PartNumber,
 			ETag:       pInfo.ETag,
 		})
 	}
-	_, err = c.CompleteMultipartUpload(ctx, bucket, object, uploadID, uploadedParts, miniogo.PutObjectOptions{
-		Internal: miniogo.AdvancedPutOptions{
+	_, err = c.CompleteMultipartUpload(ctx, bucket, object, uploadID, uploadedParts, minio.PutObjectOptions{
+		Internal: minio.AdvancedPutOptions{
 			SourceMTime: objInfo.ModTime,
 			// always set this to distinguish between `mc mirror` replication and serverside
 			ReplicationRequest: true,
@@ -1874,7 +1873,7 @@ type proxyResult struct {
 
 // get Reader from replication target if active-active replication is in place and
 // this node returns a 404
-func proxyGetToReplicationTarget(ctx context.Context, bucket, object string, rs *HTTPRangeSpec, h http.Header, opts ObjectOptions, proxyTargets *madmin.BucketTargets) (gr *GetObjectReader, proxy proxyResult, err error) {
+func proxyGetToReplicationTarget(ctx context.Context, bucket, object string, rs *HTTPRangeSpec, _ http.Header, opts ObjectOptions, proxyTargets *madmin.BucketTargets) (gr *GetObjectReader, proxy proxyResult, err error) {
 	tgt, oi, proxy := proxyHeadToRepTarget(ctx, bucket, object, rs, opts, proxyTargets)
 	if !proxy.Proxy {
 		return nil, proxy, nil
@@ -1883,10 +1882,10 @@ func proxyGetToReplicationTarget(ctx context.Context, bucket, object string, rs
 	if err != nil {
 		return nil, proxy, err
 	}
-	gopts := miniogo.GetObjectOptions{
+	gopts := minio.GetObjectOptions{
 		VersionID:            opts.VersionID,
 		ServerSideEncryption: opts.ServerSideEncryption,
-		Internal: miniogo.AdvancedGetOptions{
+		Internal: minio.AdvancedGetOptions{
 			ReplicationProxyRequest: "true",
 		},
 		PartNumber: opts.PartNumber,
@@ -1903,7 +1902,7 @@ func proxyGetToReplicationTarget(ctx context.Context, bucket, object string, rs
 	if err = gopts.SetMatchETag(oi.ETag); err != nil {
 		return nil, proxy, err
 	}
-	c := miniogo.Core{Client: tgt.Client}
+	c := minio.Core{Client: tgt.Client}
 	obj, _, h, err := c.GetObject(ctx, bucket, object, gopts)
 	if err != nil {
 		return nil, proxy, err
@@ -1963,10 +1962,10 @@ func proxyHeadToRepTarget(ctx context.Context, bucket, object string, rs *HTTPRa
 			continue
 		}
 
-		gopts := miniogo.GetObjectOptions{
+		gopts := minio.GetObjectOptions{
 			VersionID:            opts.VersionID,
 			ServerSideEncryption: opts.ServerSideEncryption,
-			Internal: miniogo.AdvancedGetOptions{
+			Internal: minio.AdvancedGetOptions{
 				ReplicationProxyRequest: "true",
 			},
 			PartNumber: opts.PartNumber,
@@ -2356,9 +2355,9 @@ func (s *replicationResyncer) resyncBucket(ctx context.Context, objectAPI Object
 			roi.EventType = ReplicateExisting
 			replicateObject(ctx, roi, objectAPI)
 		}
-		_, err = tgt.StatObject(ctx, tgt.Bucket, roi.Name, miniogo.StatObjectOptions{
+		_, err = tgt.StatObject(ctx, tgt.Bucket, roi.Name, minio.StatObjectOptions{
 			VersionID: roi.VersionID,
-			Internal: miniogo.AdvancedGetOptions{
+			Internal: minio.AdvancedGetOptions{
 				ReplicationProxyRequest: "false",
 			},
 		})

cmd/bucket-targets.go

@@ -27,7 +27,6 @@ import (
 	jsoniter "github.com/json-iterator/go"
 	"github.com/minio/madmin-go"
 	"github.com/minio/minio-go/v7"
-	miniogo "github.com/minio/minio-go/v7"
 	"github.com/minio/minio-go/v7/pkg/credentials"
 	"github.com/minio/minio/internal/bucket/replication"
 	"github.com/minio/minio/internal/crypto"
@@ -442,7 +441,7 @@ func (sys *BucketTargetSys) getRemoteTargetClient(tcfg *madmin.BucketTarget) (*T
 	config := tcfg.Credentials
 	creds := credentials.NewStaticV4(config.AccessKey, config.SecretKey, "")
 
-	api, err := minio.New(tcfg.Endpoint, &miniogo.Options{
+	api, err := minio.New(tcfg.Endpoint, &minio.Options{
 		Creds:     creds,
 		Secure:    tcfg.Secure,
 		Region:    tcfg.Region,
@@ -549,7 +548,7 @@ func parseBucketTargetConfig(bucket string, cdata, cmetadata []byte) (*madmin.Bu
 
 // TargetClient is the struct for remote target client.
 type TargetClient struct {
-	*miniogo.Client
+	*minio.Client
 	healthCheckDuration time.Duration
 	Bucket              string // remote bucket target
 	replicateSync       bool

cmd/data-scanner-metric.go

@@ -61,6 +61,7 @@ const (
 	scannerMetricScanFolder      // Scan a folder on disk, recursively.
 	scannerMetricScanCycle       // Full cycle, cluster global
 	scannerMetricScanBucketDrive // Single bucket on one drive
+	scannerMetricCompactFolder   // Folder compacted.
 
 	// Must be last:
 	scannerMetricLast
@@ -194,7 +195,7 @@ func (p *scannerMetrics) activeDrives() int {
 
 // lifetime returns the lifetime count of the specified metric.
 func (p *scannerMetrics) lifetime(m scannerMetric) uint64 {
-	if m < 0 || m >= scannerMetricLast {
+	if m >= scannerMetricLast {
 		return 0
 	}
 	val := atomic.LoadUint64(&p.operations[m])
@@ -204,7 +205,7 @@ func (p *scannerMetrics) lifetime(m scannerMetric) uint64 {
 // lastMinute returns the last minute statistics of a metric.
 // m should be < scannerMetricLastRealtime
 func (p *scannerMetrics) lastMinute(m scannerMetric) AccElem {
-	if m < 0 || m >= scannerMetricLastRealtime {
+	if m >= scannerMetricLastRealtime {
 		return AccElem{}
 	}
 	val := p.latency[m].total()

cmd/data-scanner.go

@@ -813,9 +813,8 @@ func (f *folderScanner) scanFolder(ctx context.Context, folder cachedFolder, int
 		flat.Compacted = true
 		var compact bool
 		if flat.Objects < dataScannerCompactLeastObject {
-			if f.dataUsageScannerDebug && flat.Objects > 1 {
-				// Disabled, rather chatty:
-				// console.Debugf(scannerLogPrefix+" Only %d objects, compacting %s -> %+v\n", flat.Objects, folder.name, flat)
+			if flat.Objects > 1 {
+				globalScannerMetrics.log(scannerMetricCompactFolder, folder.name)
 			}
 			compact = true
 		} else {
@@ -829,9 +828,8 @@ func (f *folderScanner) scanFolder(ctx context.Context, folder cachedFolder, int
 					}
 				}
 			}
-			if f.dataUsageScannerDebug && compact {
-				// Disabled, rather chatty:
-				// console.Debugf(scannerLogPrefix+" Only objects (%d), compacting %s -> %+v\n", flat.Objects, folder.name, flat)
+			if compact {
+				globalScannerMetrics.log(scannerMetricCompactFolder, folder.name)
 			}
 		}
 		if compact {
@@ -945,10 +943,6 @@ func (i *scannerItem) applyLifecycle(ctx context.Context, o ObjectLayer, oi Obje
 		logger.LogIf(ctx, err)
 	}
 	if i.lifeCycle == nil {
-		if i.debug {
-			// disabled, very chatty:
-			// console.Debugf(applyActionsLogPrefix+" no lifecycle rules to apply: %q\n", i.objectPath())
-		}
 		return false, size
 	}
 

cmd/endpoint-ellipses.go

@@ -207,7 +207,7 @@ func getSetIndexes(args []string, totalSizes []uint64, customSetDriveCount uint6
 }
 
 // Returns all the expanded endpoints, each argument is expanded separately.
-func (s endpointSet) getEndpoints() (endpoints []string) {
+func (s *endpointSet) getEndpoints() (endpoints []string) {
 	if len(s.endpoints) != 0 {
 		return s.endpoints
 	}

cmd/erasure-object.go

@@ -636,10 +636,7 @@ func (er erasureObjects) getObjectFileInfo(ctx context.Context, bucket, object s
 
 	if reducedErr := reduceReadQuorumErrs(ctx, errs, objectOpIgnoredErrs, readQuorum); reducedErr != nil {
 		if errors.Is(reducedErr, errErasureReadQuorum) && !strings.HasPrefix(bucket, minioMetaBucket) {
-			_, derr := er.deleteIfDangling(ctx, bucket, object, metaArr, errs, nil, opts)
-			if derr != nil {
-				err = derr
-			}
+			er.deleteIfDangling(ctx, bucket, object, metaArr, errs, nil, opts)
 		}
 		return fi, nil, nil, toObjectErr(reducedErr, bucket, object)
 	}

cmd/erasure-server-pool-rebalance.go

@@ -811,7 +811,6 @@ func (z *erasureServerPools) StartRebalance() {
 			stopfn(err)
 		}(poolIdx)
 	}
-	return
 }
 
 // StopRebalance signals the rebalance goroutine running on this node (if any)

cmd/erasure-server-pool.go

@@ -2191,9 +2191,7 @@ func (z *erasureServerPools) ReadHealth(ctx context.Context) bool {
 
 	b := z.BackendInfo()
 	poolReadQuorums := make([]int, len(b.StandardSCData))
-	for i, data := range b.StandardSCData {
-		poolReadQuorums[i] = data
-	}
+	copy(poolReadQuorums, b.StandardSCData)
 
 	for poolIdx := range erasureSetUpCount {
 		for setIdx := range erasureSetUpCount[poolIdx] {

cmd/lock-rest-client.go

@@ -24,7 +24,6 @@ import (
 	"net/url"
 
 	"github.com/minio/minio/internal/dsync"
-	"github.com/minio/minio/internal/http"
 	xhttp "github.com/minio/minio/internal/http"
 	"github.com/minio/minio/internal/rest"
 )
@@ -95,7 +94,7 @@ func (client *lockRESTClient) restCall(ctx context.Context, call string, args ds
 	defer metaDataPoolPut(argsBytes)
 	body := bytes.NewReader(argsBytes)
 	respBody, err := client.callWithContext(ctx, call, nil, body, body.Size())
-	defer http.DrainBody(respBody)
+	defer xhttp.DrainBody(respBody)
 	switch err {
 	case nil:
 		return true, nil

cmd/metacache-marker.go

@@ -49,7 +49,7 @@ func (o *listPathOptions) parseMarker() {
 		switch kv[0] {
 		case "minio_cache":
 			if kv[1] != markerTagVersion {
-				break
+				continue
 			}
 		case "id":
 			o.ID = kv[1]

cmd/peer-rest-client.go

@@ -31,7 +31,6 @@ import (
 
 	"github.com/minio/madmin-go"
 	"github.com/minio/minio/internal/event"
-	"github.com/minio/minio/internal/http"
 	xhttp "github.com/minio/minio/internal/http"
 	"github.com/minio/minio/internal/logger"
 	"github.com/minio/minio/internal/logger/message/log"
@@ -92,7 +91,7 @@ func (client *peerRESTClient) GetLocks() (lockMap map[string][]lockRequesterInfo
 		return
 	}
 	lockMap = map[string][]lockRequesterInfo{}
-	defer http.DrainBody(respBody)
+	defer xhttp.DrainBody(respBody)
 	err = gob.NewDecoder(respBody).Decode(&lockMap)
 	return lockMap, err
 }
@@ -103,7 +102,7 @@ func (client *peerRESTClient) LocalStorageInfo() (info StorageInfo, err error) {
 	if err != nil {
 		return
 	}
-	defer http.DrainBody(respBody)
+	defer xhttp.DrainBody(respBody)
 	err = gob.NewDecoder(respBody).Decode(&info)
 	return info, err
 }
@@ -114,7 +113,7 @@ func (client *peerRESTClient) ServerInfo() (info madmin.ServerProperties, err er
 	if err != nil {
 		return
 	}
-	defer http.DrainBody(respBody)
+	defer xhttp.DrainBody(respBody)
 	err = gob.NewDecoder(respBody).Decode(&info)
 	return info, err
 }
@@ -125,7 +124,7 @@ func (client *peerRESTClient) GetCPUs(ctx context.Context) (info madmin.CPUs, er
 	if err != nil {
 		return
 	}
-	defer http.DrainBody(respBody)
+	defer xhttp.DrainBody(respBody)
 	err = gob.NewDecoder(respBody).Decode(&info)
 	return info, err
 }
@@ -136,7 +135,7 @@ func (client *peerRESTClient) GetPartitions(ctx context.Context) (info madmin.Pa
 	if err != nil {
 		return
 	}
-	defer http.DrainBody(respBody)
+	defer xhttp.DrainBody(respBody)
 	err = gob.NewDecoder(respBody).Decode(&info)
 	return info, err
 }
@@ -147,7 +146,7 @@ func (client *peerRESTClient) GetOSInfo(ctx context.Context) (info madmin.OSInfo
 	if err != nil {
 		return
 	}
-	defer http.DrainBody(respBody)
+	defer xhttp.DrainBody(respBody)
 	err = gob.NewDecoder(respBody).Decode(&info)
 	return info, err
 }
@@ -158,7 +157,7 @@ func (client *peerRESTClient) GetSELinuxInfo(ctx context.Context) (info madmin.S
 	if err != nil {
 		return
 	}
-	defer http.DrainBody(respBody)
+	defer xhttp.DrainBody(respBody)
 	err = gob.NewDecoder(respBody).Decode(&info)
 	return info, err
 }
@@ -171,7 +170,7 @@ func (client *peerRESTClient) GetSysConfig(ctx context.Context) (info madmin.Sys
 		return
 	}
 	roundtrip := int32(time.Since(sent).Milliseconds())
-	defer http.DrainBody(respBody)
+	defer xhttp.DrainBody(respBody)
 
 	err = gob.NewDecoder(respBody).Decode(&info)
 	cfg := info.Config["time-info"]
@@ -189,7 +188,7 @@ func (client *peerRESTClient) GetSysErrors(ctx context.Context) (info madmin.Sys
 	if err != nil {
 		return
 	}
-	defer http.DrainBody(respBody)
+	defer xhttp.DrainBody(respBody)
 	err = gob.NewDecoder(respBody).Decode(&info)
 	return info, err
 }
@@ -200,7 +199,7 @@ func (client *peerRESTClient) GetMemInfo(ctx context.Context) (info madmin.MemIn
 	if err != nil {
 		return
 	}
-	defer http.DrainBody(respBody)
+	defer xhttp.DrainBody(respBody)
 	err = gob.NewDecoder(respBody).Decode(&info)
 	return info, err
 }
@@ -219,7 +218,7 @@ func (client *peerRESTClient) GetMetrics(ctx context.Context, t madmin.MetricTyp
 	if err != nil {
 		return
 	}
-	defer http.DrainBody(respBody)
+	defer xhttp.DrainBody(respBody)
 	err = gob.NewDecoder(respBody).Decode(&info)
 	return info, err
 }
@@ -230,7 +229,7 @@ func (client *peerRESTClient) GetProcInfo(ctx context.Context) (info madmin.Proc
 	if err != nil {
 		return
 	}
-	defer http.DrainBody(respBody)
+	defer xhttp.DrainBody(respBody)
 	err = gob.NewDecoder(respBody).Decode(&info)
 	return info, err
 }
@@ -243,7 +242,7 @@ func (client *peerRESTClient) StartProfiling(profiler string) error {
 	if err != nil {
 		return err
 	}
-	defer http.DrainBody(respBody)
+	defer xhttp.DrainBody(respBody)
 	return nil
 }
 
@@ -253,7 +252,7 @@ func (client *peerRESTClient) DownloadProfileData() (data map[string][]byte, err
 	if err != nil {
 		return
 	}
-	defer http.DrainBody(respBody)
+	defer xhttp.DrainBody(respBody)
 	err = gob.NewDecoder(respBody).Decode(&data)
 	return data, err
 }
@@ -268,7 +267,7 @@ func (client *peerRESTClient) GetBucketStats(bucket string) (BucketStats, error)
 	}
 
 	var bs BucketStats
-	defer http.DrainBody(respBody)
+	defer xhttp.DrainBody(respBody)
 	return bs, msgp.Decode(respBody, &bs)
 }
 
@@ -281,7 +280,7 @@ func (client *peerRESTClient) GetAllBucketStats() (BucketStatsMap, error) {
 	}
 
 	bsMap := BucketStatsMap{}
-	defer http.DrainBody(respBody)
+	defer xhttp.DrainBody(respBody)
 	return bsMap, msgp.Decode(respBody, &bsMap)
 }
 
@@ -293,7 +292,7 @@ func (client *peerRESTClient) LoadBucketMetadata(bucket string) error {
 	if err != nil {
 		return err
 	}
-	defer http.DrainBody(respBody)
+	defer xhttp.DrainBody(respBody)
 	return nil
 }
 
@@ -305,7 +304,7 @@ func (client *peerRESTClient) DeleteBucketMetadata(bucket string) error {
 	if err != nil {
 		return err
 	}
-	defer http.DrainBody(respBody)
+	defer xhttp.DrainBody(respBody)
 	return nil
 }
 
@@ -324,7 +323,7 @@ func (client *peerRESTClient) cycleServerBloomFilter(ctx context.Context, req bl
 		return nil, err
 	}
 	var resp bloomFilterResponse
-	defer http.DrainBody(respBody)
+	defer xhttp.DrainBody(respBody)
 	return &resp, gob.NewDecoder(respBody).Decode(&resp)
 }
 
@@ -337,7 +336,7 @@ func (client *peerRESTClient) DeletePolicy(policyName string) (err error) {
 	if err != nil {
 		return
 	}
-	defer http.DrainBody(respBody)
+	defer xhttp.DrainBody(respBody)
 	return nil
 }
 
@@ -350,7 +349,7 @@ func (client *peerRESTClient) LoadPolicy(policyName string) (err error) {
 	if err != nil {
 		return
 	}
-	defer http.DrainBody(respBody)
+	defer xhttp.DrainBody(respBody)
 	return nil
 }
 
@@ -367,7 +366,7 @@ func (client *peerRESTClient) LoadPolicyMapping(userOrGroup string, userType IAM
 	if err != nil {
 		return err
 	}
-	defer http.DrainBody(respBody)
+	defer xhttp.DrainBody(respBody)
 	return nil
 }
 
@@ -380,7 +379,7 @@ func (client *peerRESTClient) DeleteUser(accessKey string) (err error) {
 	if err != nil {
 		return
 	}
-	defer http.DrainBody(respBody)
+	defer xhttp.DrainBody(respBody)
 	return nil
 }
 
@@ -393,7 +392,7 @@ func (client *peerRESTClient) DeleteServiceAccount(accessKey string) (err error)
 	if err != nil {
 		return
 	}
-	defer http.DrainBody(respBody)
+	defer xhttp.DrainBody(respBody)
 	return nil
 }
 
@@ -407,7 +406,7 @@ func (client *peerRESTClient) LoadUser(accessKey string, temp bool) (err error)
 	if err != nil {
 		return
 	}
-	defer http.DrainBody(respBody)
+	defer xhttp.DrainBody(respBody)
 	return nil
 }
 
@@ -420,7 +419,7 @@ func (client *peerRESTClient) LoadServiceAccount(accessKey string) (err error) {
 	if err != nil {
 		return
 	}
-	defer http.DrainBody(respBody)
+	defer xhttp.DrainBody(respBody)
 	return nil
 }
 
@@ -432,7 +431,7 @@ func (client *peerRESTClient) LoadGroup(group string) error {
 	if err != nil {
 		return err
 	}
-	defer http.DrainBody(respBody)
+	defer xhttp.DrainBody(respBody)
 	return nil
 }
 
@@ -459,7 +458,7 @@ func (client *peerRESTClient) VerifyBinary(ctx context.Context, u *url.URL, sha2
 	if err != nil {
 		return err
 	}
-	defer http.DrainBody(respBody)
+	defer xhttp.DrainBody(respBody)
 	return nil
 }
 
@@ -469,7 +468,7 @@ func (client *peerRESTClient) CommitBinary(ctx context.Context) error {
 	if err != nil {
 		return err
 	}
-	defer http.DrainBody(respBody)
+	defer xhttp.DrainBody(respBody)
 	return nil
 }
 
@@ -482,7 +481,7 @@ func (client *peerRESTClient) SignalService(sig serviceSignal, subSys string) er
 	if err != nil {
 		return err
 	}
-	defer http.DrainBody(respBody)
+	defer xhttp.DrainBody(respBody)
 	return nil
 }
 
@@ -491,7 +490,7 @@ func (client *peerRESTClient) BackgroundHealStatus() (madmin.BgHealState, error)
 	if err != nil {
 		return madmin.BgHealState{}, err
 	}
-	defer http.DrainBody(respBody)
+	defer xhttp.DrainBody(respBody)
 
 	state := madmin.BgHealState{}
 	err = gob.NewDecoder(respBody).Decode(&state)
@@ -505,7 +504,7 @@ func (client *peerRESTClient) GetLocalDiskIDs(ctx context.Context) (diskIDs []st
 		logger.LogIf(ctx, err)
 		return nil
 	}
-	defer http.DrainBody(respBody)
+	defer xhttp.DrainBody(respBody)
 	if err = gob.NewDecoder(respBody).Decode(&diskIDs); err != nil {
 		logger.LogIf(ctx, err)
 		return nil
@@ -531,7 +530,7 @@ func (client *peerRESTClient) GetMetacacheListing(ctx context.Context, o listPat
 		return nil, err
 	}
 	var resp metacache
-	defer http.DrainBody(respBody)
+	defer xhttp.DrainBody(respBody)
 	return &resp, msgp.Decode(respBody, &resp)
 }
 
@@ -549,7 +548,7 @@ func (client *peerRESTClient) UpdateMetacacheListing(ctx context.Context, m meta
 		logger.LogIf(ctx, err)
 		return m, err
 	}
-	defer http.DrainBody(respBody)
+	defer xhttp.DrainBody(respBody)
 	var resp metacache
 	return resp, msgp.Decode(respBody, &resp)
 }
@@ -560,7 +559,7 @@ func (client *peerRESTClient) ReloadPoolMeta(ctx context.Context) error {
 		logger.LogIf(ctx, err)
 		return err
 	}
-	defer http.DrainBody(respBody)
+	defer xhttp.DrainBody(respBody)
 	return nil
 }
 
@@ -570,7 +569,7 @@ func (client *peerRESTClient) StopRebalance(ctx context.Context) error {
 		logger.LogIf(ctx, err)
 		return err
 	}
-	defer http.DrainBody(respBody)
+	defer xhttp.DrainBody(respBody)
 	return nil
 }
 
@@ -582,7 +581,7 @@ func (client *peerRESTClient) LoadRebalanceMeta(ctx context.Context, startRebala
 		logger.LogIf(ctx, err)
 		return err
 	}
-	defer http.DrainBody(respBody)
+	defer xhttp.DrainBody(respBody)
 	return nil
 }
 
@@ -592,7 +591,7 @@ func (client *peerRESTClient) LoadTransitionTierConfig(ctx context.Context) erro
 		logger.LogIf(ctx, err)
 		return err
 	}
-	defer http.DrainBody(respBody)
+	defer xhttp.DrainBody(respBody)
 	return nil
 }
 
@@ -615,7 +614,7 @@ func (client *peerRESTClient) doTrace(traceCh chan<- madmin.TraceInfo, doneCh <-
 	}()
 
 	respBody, err := client.callWithContext(ctx, peerRESTMethodTrace, values, nil, -1)
-	defer http.DrainBody(respBody)
+	defer xhttp.DrainBody(respBody)
 
 	if err != nil {
 		return
@@ -653,7 +652,7 @@ func (client *peerRESTClient) doListen(listenCh chan<- event.Event, doneCh <-cha
 	}()
 
 	respBody, err := client.callWithContext(ctx, peerRESTMethodListen, v, nil, -1)
-	defer http.DrainBody(respBody)
+	defer xhttp.DrainBody(respBody)
 
 	if err != nil {
 		return
@@ -723,7 +722,7 @@ func (client *peerRESTClient) doConsoleLog(logCh chan log.Info, doneCh <-chan st
 	}()
 
 	respBody, err := client.callWithContext(ctx, peerRESTMethodLog, nil, nil, -1)
-	defer http.DrainBody(respBody)
+	defer xhttp.DrainBody(respBody)
 	if err != nil {
 		return
 	}
@@ -822,7 +821,7 @@ func (client *peerRESTClient) MonitorBandwidth(ctx context.Context, buckets []st
 	if err != nil {
 		return nil, err
 	}
-	defer http.DrainBody(respBody)
+	defer xhttp.DrainBody(respBody)
 
 	dec := gob.NewDecoder(respBody)
 	var bandwidthReport madmin.BucketBandwidthReport
@@ -841,7 +840,7 @@ func (client *peerRESTClient) GetPeerMetrics(ctx context.Context) (<-chan Metric
 		for {
 			var metric Metric
 			if err := dec.Decode(&metric); err != nil {
-				http.DrainBody(respBody)
+				xhttp.DrainBody(respBody)
 				close(ch)
 				return
 			}
@@ -863,7 +862,7 @@ func (client *peerRESTClient) SpeedTest(ctx context.Context, opts speedTestOpts)
 	if err != nil {
 		return SpeedTestResult{}, err
 	}
-	defer http.DrainBody(respBody)
+	defer xhttp.DrainBody(respBody)
 	waitReader, err := waitForHTTPResponse(respBody)
 	if err != nil {
 		return SpeedTestResult{}, err
@@ -892,7 +891,7 @@ func (client *peerRESTClient) DriveSpeedTest(ctx context.Context, opts madmin.Dr
 	if err != nil {
 		return madmin.DriveSpeedTestResult{}, err
 	}
-	defer http.DrainBody(respBody)
+	defer xhttp.DrainBody(respBody)
 	waitReader, err := waitForHTTPResponse(respBody)
 	if err != nil {
 		return madmin.DriveSpeedTestResult{}, err
@@ -914,7 +913,7 @@ func (client *peerRESTClient) ReloadSiteReplicationConfig(ctx context.Context) e
 	if err != nil {
 		return err
 	}
-	defer http.DrainBody(respBody)
+	defer xhttp.DrainBody(respBody)
 	return nil
 }
 
@@ -924,7 +923,7 @@ func (client *peerRESTClient) GetLastDayTierStats(ctx context.Context) (DailyAll
 	if err != nil {
 		return result, err
 	}
-	defer http.DrainBody(respBody)
+	defer xhttp.DrainBody(respBody)
 
 	err = gob.NewDecoder(respBody).Decode(&result)
 	if err != nil {
@@ -939,7 +938,7 @@ func (client *peerRESTClient) DevNull(ctx context.Context, r io.Reader) error {
 	if err != nil {
 		return err
 	}
-	defer http.DrainBody(respBody)
+	defer xhttp.DrainBody(respBody)
 	return err
 }
 
@@ -952,7 +951,7 @@ func (client *peerRESTClient) Netperf(ctx context.Context, duration time.Duratio
 	if err != nil {
 		return result, err
 	}
-	defer http.DrainBody(respBody)
+	defer xhttp.DrainBody(respBody)
 	err = gob.NewDecoder(respBody).Decode(&result)
 	return result, err
 }

cmd/scannermetric_string.go

@@ -26,12 +26,13 @@ func _() {
 	_ = x[scannerMetricScanFolder-15]
 	_ = x[scannerMetricScanCycle-16]
 	_ = x[scannerMetricScanBucketDrive-17]
-	_ = x[scannerMetricLast-18]
+	_ = x[scannerMetricCompactFolder-18]
+	_ = x[scannerMetricLast-19]
 }
 
-const _scannerMetric_name = "ReadMetadataCheckMissingSaveUsageApplyAllApplyVersionTierObjSweepHealCheckILMCheckReplicationYieldCleanAbandonedApplyNonCurrentStartTraceScanObjectLastRealtimeScanFolderScanCycleScanBucketDriveLast"
+const _scannerMetric_name = "ReadMetadataCheckMissingSaveUsageApplyAllApplyVersionTierObjSweepHealCheckILMCheckReplicationYieldCleanAbandonedApplyNonCurrentStartTraceScanObjectLastRealtimeScanFolderScanCycleScanBucketDriveCompactFolderLast"
 
-var _scannerMetric_index = [...]uint8{0, 12, 24, 33, 41, 53, 65, 74, 77, 93, 98, 112, 127, 137, 147, 159, 169, 178, 193, 197}
+var _scannerMetric_index = [...]uint8{0, 12, 24, 33, 41, 53, 65, 74, 77, 93, 98, 112, 127, 137, 147, 159, 169, 178, 193, 206, 210}
 
 func (i scannerMetric) String() string {
 	if i >= scannerMetric(len(_scannerMetric_index)-1) {

cmd/shared-lock.go

@@ -40,6 +40,7 @@ func (ld sharedLock) backgroundRoutine(ctx context.Context, objAPI ObjectLayer,
 			continue
 		}
 
+	keepLock:
 		for {
 			select {
 			case <-ctx.Done():
@@ -48,7 +49,7 @@ func (ld sharedLock) backgroundRoutine(ctx context.Context, objAPI ObjectLayer,
 				// The context of the lock is canceled, this can happen
 				// if one lock lost quorum due to cluster instability
 				// in that case, try to lock again.
-				break
+				break keepLock
 			case ld.lockContext <- lkctx:
 				// Send the lock context to anyone asking for it
 			}
@@ -70,10 +71,8 @@ func mergeContext(ctx1, ctx2 context.Context) (context.Context, context.CancelFu
 }
 
 func (ld sharedLock) GetLock(ctx context.Context) (context.Context, context.CancelFunc) {
-	select {
-	case l := <-ld.lockContext:
+	l := <-ld.lockContext
 	return mergeContext(l.Context(), ctx)
-	}
 }
 
 func newSharedLock(ctx context.Context, objAPI ObjectLayer, lockName string) *sharedLock {

cmd/site-replication.go

@@ -42,7 +42,6 @@ import (
 	"github.com/minio/minio/internal/auth"
 	sreplication "github.com/minio/minio/internal/bucket/replication"
 	"github.com/minio/minio/internal/logger"
-	"github.com/minio/pkg/bucket/policy"
 	bktpolicy "github.com/minio/pkg/bucket/policy"
 	iampolicy "github.com/minio/pkg/iam/policy"
 )
@@ -1355,7 +1354,7 @@ func (c *SiteReplicationSys) PeerBucketVersioningHandler(ctx context.Context, bu
 }
 
 // PeerBucketPolicyHandler - copies/deletes policy to local cluster.
-func (c *SiteReplicationSys) PeerBucketPolicyHandler(ctx context.Context, bucket string, policy *policy.Policy, updatedAt time.Time) error {
+func (c *SiteReplicationSys) PeerBucketPolicyHandler(ctx context.Context, bucket string, policy *bktpolicy.Policy, updatedAt time.Time) error {
 	// skip overwrite if local update is newer than peer update.
 	if !updatedAt.IsZero() {
 		if _, updateTm, err := globalBucketMetadataSys.GetPolicyConfig(bucket); err == nil && updateTm.After(updatedAt) {

cmd/streaming-signature-v4.go

@@ -320,7 +320,7 @@ func (cr *s3ChunkedReader) Read(buf []byte) (n int, err error) {
 		return n, cr.err
 	}
 	b, err = cr.reader.ReadByte()
-	if b != '\r' {
+	if b != '\r' || err != nil {
 		cr.err = errMalformedEncoding
 		return n, cr.err
 	}

cmd/untar.go

@@ -241,6 +241,7 @@ func untar(ctx context.Context, r io.Reader, putObject func(reader io.Reader, in
 					rc.Close()
 					<-asyncWriters
 					wg.Done()
+					//lint:ignore SA6002 we are fine with the tiny alloc
 					poolBuf128k.Put(b)
 				}()
 				if err := putObject(&rc, fi, name); err != nil {

cmd/warm-backend-s3.go

@@ -28,8 +28,7 @@ import (
 	"time"
 
 	"github.com/minio/madmin-go"
-	minio "github.com/minio/minio-go/v7"
-	miniogo "github.com/minio/minio-go/v7"
+	"github.com/minio/minio-go/v7"
 	"github.com/minio/minio-go/v7/pkg/credentials"
 )
 
@@ -80,7 +79,7 @@ func (s3 *warmBackendS3) Get(ctx context.Context, object string, rv remoteVersio
 			return nil, s3.ToObjectError(err, object)
 		}
 	}
-	c := &miniogo.Core{Client: s3.client}
+	c := &minio.Core{Client: s3.client}
 	// Important to use core primitives here to pass range get options as is.
 	r, _, _, err := c.GetObject(ctx, s3.Bucket, s3.getDest(object), gopts)
 	if err != nil {

cmd/xl-storage-format-v2.go

@@ -678,6 +678,7 @@ func metaDataPoolGet() []byte {
 // metaDataPoolPut will put an unused small buffer back into the pool.
 func metaDataPoolPut(buf []byte) {
 	if cap(buf) >= metaDataReadDefault && cap(buf) < metaDataReadDefault*4 {
+		//lint:ignore SA6002 we are fine with the tiny alloc
 		metaDataPool.Put(buf)
 	}
 }
@@ -1845,11 +1846,9 @@ func mergeXLV2Versions(quorum int, strict bool, requestedVersions int, versions
 		}
 
 		var latest xlMetaV2ShallowVersion
-		var latestCount int
 		if consistent {
 			// All had the same signature, easy.
 			latest = tops[0]
-			latestCount = len(tops)
 			merged = append(merged, latest)
 
 			// Calculate latest 'n' non-free versions.
@@ -1859,6 +1858,7 @@ func mergeXLV2Versions(quorum int, strict bool, requestedVersions int, versions
 
 		} else {
 			// Find latest.
+			var latestCount int
 			for i, ver := range tops {
 				if ver.header == latest.header {
 					latestCount++

internal/config/identity/plugin/config.go

@@ -264,7 +264,7 @@ func (o *AuthNPlugin) Authenticate(roleArn arn.ARN, token string) (AuthNResponse
 		return AuthNResponse{}, fmt.Errorf("Invalid role ARN value: %s", roleArn.String())
 	}
 
-	var u url.URL = url.URL(*o.args.URL)
+	u := url.URL(*o.args.URL)
 	q := u.Query()
 	q.Set("token", token)
 	u.RawQuery = q.Encode()

internal/kms/kes.go

@@ -103,8 +103,7 @@ func NewWithConfig(config Config) (KMS, error) {
 	go func() {
 		for {
 			var prevCertificate tls.Certificate
-			select {
-			case certificate, ok := <-config.ReloadCertEvents:
+			certificate, ok := <-config.ReloadCertEvents
 			if !ok {
 				return
 			}
@@ -133,7 +132,6 @@ func NewWithConfig(config Config) (KMS, error) {
 				prevCertificate = certificate
 			}
 		}
-		}
 	}()
 	return c, nil
 }