package ioutil

import (
	"io"
	"os"
)

// AppendFile - appends the file "src" to the file "dst"
func AppendFile(dst string, src string, osync bool) error {
	flags := os.O_WRONLY | os.O_APPEND | os.O_CREATE
	if osync {
		flags |= os.O_SYNC
	}
	appendFile, err := os.OpenFile(dst, flags, 0o666)
	if err != nil {
		return err
	}
	defer appendFile.Close()

	srcFile, err := os.Open(src)

					if len(listObjectsInfo.Prefixes) == 0 || commonPrefix != listObjectsInfo.Prefixes[len(listObjectsInfo.Prefixes)-1] {
						listObjectsInfo.Prefixes = append(listObjectsInfo.Prefixes, commonPrefix)
						count++
					}
					goto next
				}
			}
			listObjectsInfo.Objects = append(listObjectsInfo.Objects, ObjectInfo{
				Bucket:  bucket,
				Name:    objName,
				Size:    int64(file.UncompressedSize64),

	for i, info := range infos {
		mutations := info.Metrics.TotalDeletes + info.Metrics.TotalWrites
		if mutations >= commonMutations {
			newDisks = append(newDisks, disks[i])
			newInfos = append(newInfos, infos[i])
		}
	}

	return newDisks, newInfos
}

func getQuorumDisks(disks []StorageAPI, infos []DiskInfo, readQuorum int) (newDisks []StorageAPI) {

				kvs.Set(kv.Key, kv.Value)
			}
		}
		targets = append(targets, Target{
			SubSystem: inputs[0],
			KVS:       kvs,
		})
	} else {
		// Use help for sub-system to preserve the order. Add deprecated
		// keys at the end (in some order).
		kvsOrder := append([]HelpKV{}, HelpSubSysMap[""]...)
		for _, v := range HelpDeprecatedSubSysMap {
			kvsOrder = append(kvsOrder, v)
		}

		for _, hkv := range kvsOrder {

			}
			replies[idx] = info
		}(client, i)
	}
	wg.Wait()

	// Add local to this server.
	replies = append(replies, objLayer.LocalStorageInfo(GlobalContext, metrics))

	storageInfo.Backend = objLayer.BackendInfo()
	for _, sinfo := range replies {
		storageInfo.Disks = append(storageInfo.Disks, sinfo.Disks...)
	}

	return storageInfo
}

		hostErrs = append(hostErrs, globalNotificationSys.StartProfiling(profiler)...)

		// Start profiling locally as well.
		prof, err := startProfiler(profiler)
		if err != nil {
			hostErrs = append(hostErrs, NotificationPeerErr{
				Host: *thisAddr,
				Err:  err,
			})
		} else {
			globalProfiler[profiler] = prof
			hostErrs = append(hostErrs, NotificationPeerErr{

		MetadataOnly: true,
	}
	for _, part := range parts {
		req.Files = append(req.Files, fmt.Sprintf("part.%d.meta", part.PartNumber))
	}
	partInfoFiles, err := readMultipleFiles(ctx, onlineDisks, req, writeQuorum)
	if err != nil {
		return oi, err
	}
	if len(partInfoFiles) != len(parts) {
		// Should only happen through internal error

// returns file mode creation mask.
func getUmask() int {
	mask := syscall.Umask(0)
	syscall.Umask(mask)
	return mask
}

// Tests if the directory and file creations happen with proper umask.
func TestIsValidUmaskVol(t *testing.T) {
	tmpPath := t.TempDir()
	testCases := []struct {
		volName       string
		expectedUmask int
	}{
		{"is-this-valid", getUmask()},
	}

	// map header, size 5
	// string "Name"
	o = append(o, 0x85, 0xa4, 0x4e, 0x61, 0x6d, 0x65)
	o = msgp.AppendString(o, z.Name)
	// string "Created"
	o = append(o, 0xa7, 0x43, 0x72, 0x65, 0x61, 0x74, 0x65, 0x64)
	o = msgp.AppendTime(o, z.Created)
	// string "Deleted"
	o = append(o, 0xa7, 0x44, 0x65, 0x6c, 0x65, 0x74, 0x65, 0x64)
	o = msgp.AppendTime(o, z.Deleted)
	// string "Versioning"

	// string "v"
	o = append(o, 0xde, 0x0, 0x10, 0xa1, 0x76)
	o = msgp.AppendInt(o, z.Version)
	// string "jid"
	o = append(o, 0xa3, 0x6a, 0x69, 0x64)
	o = msgp.AppendString(o, z.JobID)
	// string "jt"
	o = append(o, 0xa2, 0x6a, 0x74)
	o = msgp.AppendString(o, z.JobType)
	// string "st"
	o = append(o, 0xa2, 0x73, 0x74)
	o = msgp.AppendTime(o, z.StartTime)
	// string "lu"
	o = append(o, 0xa2, 0x6c, 0x75)