libgocryptfs/tests/matrix/concurrency_test.go

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package matrix
import (
"bytes"
"io"
"log"
"os"
"sync"
"syscall"
"testing"
"github.com/rfjakob/gocryptfs/v2/tests/test_helpers"
)
// https://github.com/rfjakob/gocryptfs/issues/363
//
// Note: this test calls log.Fatal() instead of t.Fatal() because apparently,
// calling t.Fatal() from a goroutine hangs the test.
func TestConcurrentReadWrite(t *testing.T) {
var wg sync.WaitGroup
fn := test_helpers.DefaultPlainDir + "/TestConcurrentReadWrite"
if f, err := os.Create(fn); err != nil {
t.Fatal(err)
} else {
f.Close()
}
buf := make([]byte, 100)
content := []byte("1234567890")
threads := 10
loops := 30
for i := 0; i < threads; i++ {
// Reader thread
wg.Add(1)
go func() {
fRd, err := os.Open(fn)
if err != nil {
log.Fatal(err)
}
for j := 0; j < loops; j++ {
n, err := fRd.ReadAt(buf, 0)
if err != nil && err != io.EOF {
log.Fatal(err)
}
if n != 0 && n != 10 {
log.Fatalf("strange read length: %d", n)
}
}
fRd.Close()
wg.Done()
}()
// Writer thread
wg.Add(1)
go func() {
fWr, err := os.OpenFile(fn, os.O_RDWR, 0700)
if err != nil {
log.Fatal(err)
}
for j := 0; j < loops; j++ {
err = fWr.Truncate(0)
if err != nil {
log.Fatal(err)
}
_, err = fWr.WriteAt(content, 0)
if err != nil {
log.Fatal(err)
}
}
fWr.Close()
wg.Done()
}()
}
wg.Wait()
}
// https://github.com/rfjakob/gocryptfs/issues/363
//
// Note: this test calls log.Fatal() instead of t.Fatal() because apparently,
// calling t.Fatal() from a goroutine hangs the test.
func TestConcurrentReadCreate(t *testing.T) {
fn := test_helpers.DefaultPlainDir + "/TestConcurrentReadCreate"
content := []byte("1234567890")
loops := 100
var wg sync.WaitGroup
// "Create()" thread
wg.Add(1)
go func() {
for i := 0; i < loops; i++ {
f, err := os.Create(fn)
if err != nil {
log.Fatal(err)
}
_, err = f.Write(content)
if err != nil {
log.Fatal(err)
}
f.Close()
syscall.Unlink(fn)
}
wg.Done()
}()
// "Reader" thread
wg.Add(1)
go func() {
buf0 := make([]byte, 100)
for i := 0; i < loops; i++ {
f, err := os.Open(fn)
if err != nil {
i++
continue
}
n, err := f.Read(buf0)
f.Close()
if err == io.EOF {
i++
continue
}
if err != nil {
log.Fatal(err)
}
buf := buf0[:n]
golangci-lint: fix issues found by gosimple Everything except the if err2.Err == syscall.EOPNOTSUPP case. Gets too confusing when collapsed into a single line. Issues were: $ golangci-lint run --disable-all --enable gosimple mount.go:473:2: S1008: should use 'return strings.HasPrefix(v, "fusermount version")' instead of 'if strings.HasPrefix(v, "fusermount version") { return true }; return false' (gosimple) if strings.HasPrefix(v, "fusermount version") { ^ cli_args.go:258:5: S1002: should omit comparison to bool constant, can be simplified to `args.forcedecode` (gosimple) if args.forcedecode == true { ^ cli_args.go:263:6: S1002: should omit comparison to bool constant, can be simplified to `args.aessiv` (gosimple) if args.aessiv == true { ^ cli_args.go:267:6: S1002: should omit comparison to bool constant, can be simplified to `args.reverse` (gosimple) if args.reverse == true { ^ internal/stupidgcm/stupidgcm.go:227:6: S1002: should omit comparison to bool constant, can be simplified to `g.forceDecode` (gosimple) if g.forceDecode == true { ^ gocryptfs-xray/xray_tests/xray_test.go:23:5: S1004: should use !bytes.Equal(out, expected) instead (gosimple) if bytes.Compare(out, expected) != 0 { ^ gocryptfs-xray/xray_tests/xray_test.go:40:5: S1004: should use !bytes.Equal(out, expected) instead (gosimple) if bytes.Compare(out, expected) != 0 { ^ gocryptfs-xray/paths_ctlsock.go:34:20: S1002: should omit comparison to bool constant, can be simplified to `!eof` (gosimple) for eof := false; eof == false; line++ { ^ tests/reverse/xattr_test.go:19:2: S1008: should use 'return err2.Err != syscall.EOPNOTSUPP' instead of 'if err2.Err == syscall.EOPNOTSUPP { return false }; return true' (gosimple) if err2.Err == syscall.EOPNOTSUPP { ^ internal/fusefrontend/node.go:459:45: S1002: should omit comparison to bool constant, can be simplified to `!nameFileAlreadyThere` (gosimple) if nametransform.IsLongContent(cName2) && nameFileAlreadyThere == false { ^ tests/xattr/xattr_integration_test.go:221:2: S1008: should use 'return err2.Err != syscall.EOPNOTSUPP' instead of 'if err2.Err == syscall.EOPNOTSUPP { return false }; return true' (gosimple) if err2.Err == syscall.EOPNOTSUPP { ^ tests/test_helpers/helpers.go:338:19: S1002: should omit comparison to bool constant, can be simplified to `open` (gosimple) if err != nil && open == true { ^ tests/matrix/concurrency_test.go:121:7: S1004: should use !bytes.Equal(buf, content) instead (gosimple) if bytes.Compare(buf, content) != 0 { ^
2021-08-19 07:51:47 +02:00
if !bytes.Equal(buf, content) {
// Calling t.Fatal() from a goroutine hangs the test so we use log.Fatal
log.Fatalf("%s: content mismatch: have=%q want=%q", t.Name(), string(buf), string(content))
}
}
wg.Done()
}()
wg.Wait()
}
2020-09-09 18:18:37 +02:00
// TestInoReuse tries to uncover problems when a file gets replaced by
// a directory with the same inode number (and vice versa).
//
// So far, it only has triggered warnings like this
//
// go-fuse: warning: Inode.Path: inode i4201033 is orphaned, replacing segment with ".go-fuse.5577006791947779410/deleted"
//
// but none of the "blocked waiting for FORGET".
func TestInoReuse(t *testing.T) {
var wg sync.WaitGroup
fn := test_helpers.DefaultPlainDir + "/" + t.Name()
wg.Add(1)
go func() {
for i := 0; i < 1000; i++ {
fd, err := syscall.Open(fn, syscall.O_CREAT|syscall.O_WRONLY|syscall.O_TRUNC, 0600)
2020-09-09 18:18:37 +02:00
if err == syscall.EISDIR {
continue
}
if err != nil {
t.Error(err)
break
}
var st syscall.Stat_t
syscall.Fstat(fd, &st)
if i%2 == 0 {
syscall.Close(fd)
syscall.Unlink(fn)
} else {
syscall.Unlink(fn)
syscall.Close(fd)
}
}
wg.Done()
}()
wg.Add(1)
go func() {
for i := 0; i < 1000; i++ {
err := syscall.Mkdir(fn, 0700)
if err == syscall.EEXIST {
continue
}
if err != nil {
t.Error(err)
break
}
var st syscall.Stat_t
syscall.Stat(fn, &st)
syscall.Rmdir(fn)
}
wg.Done()
}()
wg.Wait()
}