mirror of
https://github.com/octoleo/syncthing.git
synced 2024-12-23 03:18:59 +00:00
402 lines
13 KiB
Go
402 lines
13 KiB
Go
// Copyright (C) 2019 The Syncthing Authors.
|
|
//
|
|
// This Source Code Form is subject to the terms of the Mozilla Public
|
|
// License, v. 2.0. If a copy of the MPL was not distributed with this file,
|
|
// You can obtain one at https://mozilla.org/MPL/2.0/.
|
|
|
|
package fs
|
|
|
|
import (
|
|
"bytes"
|
|
"io"
|
|
"io/ioutil"
|
|
"math/rand"
|
|
"os"
|
|
"path/filepath"
|
|
"syscall"
|
|
"testing"
|
|
)
|
|
|
|
var (
|
|
generationSize int64 = 4 << 20
|
|
defaultCopySize int64 = 1 << 20
|
|
|
|
testCases = []struct {
|
|
name string
|
|
// Starting size of files
|
|
srcSize int64
|
|
dstSize int64
|
|
// Offset from which to read
|
|
srcOffset int64
|
|
dstOffset int64
|
|
// Cursor position before the copy
|
|
srcStartingPos int64
|
|
dstStartingPos int64
|
|
// Expected destination size
|
|
expectedDstSizeAfterCopy int64
|
|
// Custom copy size
|
|
copySize int64
|
|
// Expected failure
|
|
expectedErrors map[CopyRangeMethod]error
|
|
}{
|
|
{
|
|
name: "append to end",
|
|
srcSize: generationSize,
|
|
dstSize: generationSize,
|
|
srcOffset: 0,
|
|
dstOffset: generationSize,
|
|
srcStartingPos: generationSize,
|
|
dstStartingPos: generationSize,
|
|
expectedDstSizeAfterCopy: generationSize + defaultCopySize,
|
|
copySize: defaultCopySize,
|
|
expectedErrors: nil,
|
|
},
|
|
{
|
|
name: "append to end offsets at start",
|
|
srcSize: generationSize,
|
|
dstSize: generationSize,
|
|
srcOffset: 0,
|
|
dstOffset: generationSize,
|
|
srcStartingPos: 0, // We seek back to start, and expect src not to move after copy
|
|
dstStartingPos: 0, // Seek back, but expect dst pos to not change
|
|
expectedDstSizeAfterCopy: generationSize + defaultCopySize,
|
|
copySize: defaultCopySize,
|
|
expectedErrors: nil,
|
|
},
|
|
{
|
|
name: "overwrite part of destination region",
|
|
srcSize: generationSize,
|
|
dstSize: generationSize,
|
|
srcOffset: defaultCopySize,
|
|
dstOffset: generationSize,
|
|
srcStartingPos: generationSize,
|
|
dstStartingPos: generationSize,
|
|
expectedDstSizeAfterCopy: generationSize + defaultCopySize,
|
|
copySize: defaultCopySize,
|
|
expectedErrors: nil,
|
|
},
|
|
{
|
|
name: "overwrite all of destination",
|
|
srcSize: generationSize,
|
|
dstSize: generationSize,
|
|
srcOffset: 0,
|
|
dstOffset: 0,
|
|
srcStartingPos: generationSize,
|
|
dstStartingPos: generationSize,
|
|
expectedDstSizeAfterCopy: generationSize,
|
|
copySize: defaultCopySize,
|
|
expectedErrors: nil,
|
|
},
|
|
{
|
|
name: "overwrite part of destination",
|
|
srcSize: generationSize,
|
|
dstSize: generationSize,
|
|
srcOffset: defaultCopySize,
|
|
dstOffset: 0,
|
|
srcStartingPos: generationSize,
|
|
dstStartingPos: generationSize,
|
|
expectedDstSizeAfterCopy: generationSize,
|
|
copySize: defaultCopySize,
|
|
expectedErrors: nil,
|
|
},
|
|
// Write way past the end of the file
|
|
{
|
|
name: "destination gets expanded as it is being written to",
|
|
srcSize: generationSize,
|
|
dstSize: generationSize,
|
|
srcOffset: 0,
|
|
dstOffset: generationSize * 2,
|
|
srcStartingPos: generationSize,
|
|
dstStartingPos: generationSize,
|
|
expectedDstSizeAfterCopy: generationSize*2 + defaultCopySize,
|
|
copySize: defaultCopySize,
|
|
expectedErrors: nil,
|
|
},
|
|
// Source file does not have enough bytes to copy in that range, should result in an unexpected eof.
|
|
{
|
|
name: "source file too small",
|
|
srcSize: generationSize,
|
|
dstSize: generationSize,
|
|
srcOffset: 0,
|
|
dstOffset: 0,
|
|
srcStartingPos: 0,
|
|
dstStartingPos: 0,
|
|
expectedDstSizeAfterCopy: -11, // Does not matter, should fail.
|
|
copySize: defaultCopySize * 10,
|
|
// ioctl returns syscall.EINVAL, rest are wrapped
|
|
expectedErrors: map[CopyRangeMethod]error{
|
|
CopyRangeMethodIoctl: io.ErrUnexpectedEOF,
|
|
CopyRangeMethodStandard: io.ErrUnexpectedEOF,
|
|
CopyRangeMethodCopyFileRange: io.ErrUnexpectedEOF,
|
|
CopyRangeMethodSendFile: io.ErrUnexpectedEOF,
|
|
CopyRangeMethodAllWithFallback: io.ErrUnexpectedEOF,
|
|
CopyRangeMethodDuplicateExtents: io.ErrUnexpectedEOF,
|
|
},
|
|
},
|
|
{
|
|
name: "unaligned source offset unaligned size",
|
|
srcSize: generationSize,
|
|
dstSize: 0,
|
|
srcOffset: 1,
|
|
dstOffset: 0,
|
|
srcStartingPos: 0,
|
|
dstStartingPos: 0,
|
|
expectedDstSizeAfterCopy: defaultCopySize + 1,
|
|
copySize: defaultCopySize + 1,
|
|
expectedErrors: map[CopyRangeMethod]error{
|
|
CopyRangeMethodIoctl: syscall.EINVAL,
|
|
CopyRangeMethodDuplicateExtents: syscall.EINVAL,
|
|
},
|
|
},
|
|
{
|
|
name: "unaligned source offset aligned size",
|
|
srcSize: generationSize,
|
|
dstSize: 0,
|
|
srcOffset: 1,
|
|
dstOffset: 0,
|
|
srcStartingPos: 0,
|
|
dstStartingPos: 0,
|
|
expectedDstSizeAfterCopy: defaultCopySize,
|
|
copySize: defaultCopySize,
|
|
expectedErrors: map[CopyRangeMethod]error{
|
|
CopyRangeMethodIoctl: syscall.EINVAL,
|
|
CopyRangeMethodDuplicateExtents: syscall.EINVAL,
|
|
},
|
|
},
|
|
{
|
|
name: "unaligned destination offset unaligned size",
|
|
srcSize: generationSize,
|
|
dstSize: generationSize,
|
|
srcOffset: 0,
|
|
dstOffset: 1,
|
|
srcStartingPos: 0,
|
|
dstStartingPos: 0,
|
|
expectedDstSizeAfterCopy: generationSize,
|
|
copySize: defaultCopySize + 1,
|
|
expectedErrors: map[CopyRangeMethod]error{
|
|
CopyRangeMethodIoctl: syscall.EINVAL,
|
|
CopyRangeMethodDuplicateExtents: syscall.EINVAL,
|
|
},
|
|
},
|
|
{
|
|
name: "unaligned destination offset aligned size",
|
|
srcSize: generationSize,
|
|
dstSize: generationSize,
|
|
srcOffset: 0,
|
|
dstOffset: 1,
|
|
srcStartingPos: 0,
|
|
dstStartingPos: 0,
|
|
expectedDstSizeAfterCopy: generationSize,
|
|
copySize: defaultCopySize,
|
|
expectedErrors: map[CopyRangeMethod]error{
|
|
CopyRangeMethodIoctl: syscall.EINVAL,
|
|
CopyRangeMethodDuplicateExtents: syscall.EINVAL,
|
|
},
|
|
},
|
|
{
|
|
name: "aligned offsets unaligned size",
|
|
srcSize: generationSize,
|
|
dstSize: generationSize,
|
|
srcOffset: 0,
|
|
dstOffset: 0,
|
|
srcStartingPos: 0,
|
|
dstStartingPos: 0,
|
|
expectedDstSizeAfterCopy: generationSize,
|
|
copySize: defaultCopySize + 1,
|
|
expectedErrors: map[CopyRangeMethod]error{
|
|
CopyRangeMethodIoctl: syscall.EINVAL,
|
|
CopyRangeMethodDuplicateExtents: syscall.EINVAL,
|
|
},
|
|
},
|
|
// Last block that starts on a nice boundary
|
|
{
|
|
name: "last block",
|
|
srcSize: generationSize + 2,
|
|
dstSize: 0,
|
|
srcOffset: generationSize,
|
|
dstOffset: 0,
|
|
srcStartingPos: 0,
|
|
dstStartingPos: 0,
|
|
expectedDstSizeAfterCopy: 2,
|
|
copySize: 2,
|
|
// Succeeds on all, as long as the offset is file-system block aligned.
|
|
expectedErrors: nil,
|
|
},
|
|
// Copy whole file
|
|
{
|
|
name: "whole file copy block aligned",
|
|
srcSize: generationSize,
|
|
dstSize: 0,
|
|
srcOffset: 0,
|
|
dstOffset: 0,
|
|
srcStartingPos: 0,
|
|
dstStartingPos: 0,
|
|
expectedDstSizeAfterCopy: generationSize,
|
|
copySize: generationSize,
|
|
expectedErrors: nil,
|
|
},
|
|
{
|
|
name: "whole file copy not block aligned",
|
|
srcSize: generationSize + 1,
|
|
dstSize: 0,
|
|
srcOffset: 0,
|
|
dstOffset: 0,
|
|
srcStartingPos: 0,
|
|
dstStartingPos: 0,
|
|
expectedDstSizeAfterCopy: generationSize + 1,
|
|
copySize: generationSize + 1,
|
|
expectedErrors: nil,
|
|
},
|
|
}
|
|
)
|
|
|
|
func TestCopyRange(tttt *testing.T) {
|
|
randSrc := rand.New(rand.NewSource(rand.Int63()))
|
|
paths := filepath.SplitList(os.Getenv("STFSTESTPATH"))
|
|
if len(paths) == 0 {
|
|
paths = []string{""}
|
|
}
|
|
for _, path := range paths {
|
|
testPath, err := ioutil.TempDir(path, "")
|
|
if err != nil {
|
|
tttt.Fatal(err)
|
|
}
|
|
defer os.RemoveAll(testPath)
|
|
name := path
|
|
if name == "" {
|
|
name = "tmp"
|
|
}
|
|
tttt.Run(name, func(ttt *testing.T) {
|
|
for copyMethod, impl := range copyRangeMethods {
|
|
ttt.Run(copyMethod.String(), func(tt *testing.T) {
|
|
for _, testCase := range testCases {
|
|
tt.Run(testCase.name, func(t *testing.T) {
|
|
srcBuf := make([]byte, testCase.srcSize)
|
|
dstBuf := make([]byte, testCase.dstSize)
|
|
td, err := ioutil.TempDir(testPath, "")
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
defer os.RemoveAll(td)
|
|
|
|
fs := NewFilesystem(FilesystemTypeBasic, td)
|
|
|
|
if _, err := io.ReadFull(randSrc, srcBuf); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
if _, err := io.ReadFull(randSrc, dstBuf); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
src, err := fs.Create("src")
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
defer func() { _ = src.Close() }()
|
|
|
|
dst, err := fs.Create("dst")
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
defer func() { _ = dst.Close() }()
|
|
|
|
// Write some data
|
|
|
|
if _, err := src.Write(srcBuf); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
if _, err := dst.Write(dstBuf); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
// Set the offsets
|
|
|
|
if n, err := src.Seek(testCase.srcStartingPos, io.SeekStart); err != nil || n != testCase.srcStartingPos {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
if n, err := dst.Seek(testCase.dstStartingPos, io.SeekStart); err != nil || n != testCase.dstStartingPos {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
if err := impl(src.(basicFile), dst.(basicFile), testCase.srcOffset, testCase.dstOffset, testCase.copySize); err != nil {
|
|
if err == syscall.ENOTSUP {
|
|
// Test runner can adjust directory in which to run the tests, that allow broader tests.
|
|
t.Skip("Not supported on the current filesystem, set STFSTESTPATH env var.")
|
|
}
|
|
if testCase.expectedErrors[copyMethod] == err {
|
|
return
|
|
}
|
|
t.Fatal(err)
|
|
} else if testCase.expectedErrors[copyMethod] != nil {
|
|
t.Fatal("did not get expected error")
|
|
}
|
|
|
|
// Check offsets where we expect them
|
|
|
|
if srcCurPos, err := src.Seek(0, io.SeekCurrent); err != nil {
|
|
t.Fatal(err)
|
|
} else if srcCurPos != testCase.srcStartingPos {
|
|
t.Errorf("src pos expected %d got %d", testCase.srcStartingPos, srcCurPos)
|
|
}
|
|
|
|
if dstCurPos, err := dst.Seek(0, io.SeekCurrent); err != nil {
|
|
t.Fatal(err)
|
|
} else if dstCurPos != testCase.dstStartingPos {
|
|
t.Errorf("dst pos expected %d got %d", testCase.dstStartingPos, dstCurPos)
|
|
}
|
|
|
|
// Check dst size
|
|
|
|
if fi, err := dst.Stat(); err != nil {
|
|
t.Fatal(err)
|
|
} else if fi.Size() != testCase.expectedDstSizeAfterCopy {
|
|
t.Errorf("expected %d size, got %d", testCase.expectedDstSizeAfterCopy, fi.Size())
|
|
}
|
|
|
|
// Check the data is as expected
|
|
|
|
if _, err := dst.Seek(0, io.SeekStart); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
resultBuf := make([]byte, testCase.expectedDstSizeAfterCopy)
|
|
if _, err := io.ReadFull(dst, resultBuf); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
if !bytes.Equal(srcBuf[testCase.srcOffset:testCase.srcOffset+testCase.copySize], resultBuf[testCase.dstOffset:testCase.dstOffset+testCase.copySize]) {
|
|
t.Errorf("Not equal")
|
|
}
|
|
|
|
// Check not copied content does not get corrupted
|
|
|
|
if testCase.dstOffset > testCase.dstSize {
|
|
if !bytes.Equal(dstBuf[:testCase.dstSize], resultBuf[:testCase.dstSize]) {
|
|
t.Error("region before copy region not equals")
|
|
}
|
|
if !bytes.Equal(resultBuf[testCase.dstSize:testCase.dstOffset], make([]byte, testCase.dstOffset-testCase.dstSize)) {
|
|
t.Error("found non zeroes in expected zero region")
|
|
}
|
|
} else {
|
|
if !bytes.Equal(dstBuf[:testCase.dstOffset], resultBuf[:testCase.dstOffset]) {
|
|
t.Error("region before copy region not equals")
|
|
}
|
|
afterCopyStart := testCase.dstOffset + testCase.copySize
|
|
|
|
if afterCopyStart < testCase.dstSize {
|
|
if !bytes.Equal(dstBuf[afterCopyStart:], resultBuf[afterCopyStart:len(dstBuf)]) {
|
|
t.Error("region after copy region not equals")
|
|
}
|
|
}
|
|
}
|
|
})
|
|
}
|
|
})
|
|
}
|
|
})
|
|
}
|
|
}
|