More.

.github/workflows/test.yml

@@ -126,14 +126,4 @@ jobs:
     - uses: docker/setup-qemu-action@v3
 
     - name: Test
-      run: GOARCH=arm64 go test -v -short ./...
-
-  test-f2fs:
-    runs-on: ubuntu-latest
-
-    steps:
-    - uses: actions/checkout@v4
-      with: { lfs: 'true' }
-
-    - name: Mount F2FS
-      run: .github/workflows/f2fs.sh
+      run: GOARCH=arm64 go test -v -short ./...

sqlite.go

@@ -99,8 +99,8 @@ func instantiateSQLite() (sqlt *sqlite, err error) {
 	}
 
 	sqlt.freer = util.ReadUint32(sqlt.mod, uint32(global.Get()))
-	if err != nil {
-		return nil, err
+	if sqlt.freer == 0 {
+		return nil, util.BadBinaryErr
 	}
 	return sqlt, nil
 }

vfs/file.go

@@ -173,10 +173,14 @@ func (*vfsFile) SectorSize() int {
 }
 
 func (f *vfsFile) DeviceCharacteristics() DeviceCharacteristic {
+	var res DeviceCharacteristic
+	if osBatchAtomic(f.File) {
+		res |= IOCAP_BATCH_ATOMIC
+	}
 	if f.psow {
-		return IOCAP_POWERSAFE_OVERWRITE
+		res |= IOCAP_POWERSAFE_OVERWRITE
 	}
-	return 0
+	return res
 }
 
 func (f *vfsFile) SizeHint(size int64) error {

vfs/os_f2fs_linux.go

@@ -0,0 +1,34 @@
+//go:build amd64 || arm64 || !sqlite3_nosys
+
+package vfs
+
+import (
+	"os"
+
+	"golang.org/x/sys/unix"
+)
+
+const (
+	_F2FS_IOC_START_ATOMIC_WRITE  = 62721
+	_F2FS_IOC_COMMIT_ATOMIC_WRITE = 62722
+	_F2FS_IOC_ABORT_ATOMIC_WRITE  = 62725
+	_F2FS_IOC_GET_FEATURES        = 2147546380
+	_F2FS_FEATURE_ATOMIC_WRITE    = 4
+)
+
+func osBatchAtomic(file *os.File) bool {
+	flags, err := unix.IoctlGetInt(int(file.Fd()), _F2FS_IOC_GET_FEATURES)
+	return err == nil && flags&_F2FS_FEATURE_ATOMIC_WRITE != 0
+}
+
+func (f *vfsFile) BeginAtomicWrite() error {
+	return unix.IoctlSetInt(int(f.Fd()), _F2FS_IOC_START_ATOMIC_WRITE, 0)
+}
+
+func (f *vfsFile) CommitAtomicWrite() error {
+	return unix.IoctlSetInt(int(f.Fd()), _F2FS_IOC_COMMIT_ATOMIC_WRITE, 0)
+}
+
+func (f *vfsFile) RollbackAtomicWrite() error {
+	return unix.IoctlSetInt(int(f.Fd()), _F2FS_IOC_ABORT_ATOMIC_WRITE, 0)
+}

vfs/os_std_atomic.go

@@ -0,0 +1,9 @@
+//go:build !linux || !(amd64 || arm64) || sqlite3_nosys
+
+package vfs
+
+import "os"
+
+func osBatchAtomic(*os.File) bool {
+	return false
+}