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|
package fs
import (
"bytes"
"context"
"os"
"reflect"
"syscall"
"testing"
"github.com/hanwen/go-fuse/v2/fuse"
"github.com/hanwen/go-fuse/v2/internal/renameat"
"github.com/kylelemons/godebug/pretty"
"golang.org/x/sys/unix"
)
func TestRenameExchange(t *testing.T) {
tc := newTestCase(t, &testOptions{attrCache: true, entryCache: true})
if err := os.Mkdir(tc.origDir+"/dir", 0755); err != nil {
t.Fatalf("Mkdir: %v", err)
}
tc.writeOrig("file", "hello", 0644)
tc.writeOrig("dir/file", "x", 0644)
f1, err := syscall.Open(tc.mntDir+"/", syscall.O_DIRECTORY, 0)
if err != nil {
t.Fatalf("open 1: %v", err)
}
defer syscall.Close(f1)
f2, err := syscall.Open(tc.mntDir+"/dir", syscall.O_DIRECTORY, 0)
if err != nil {
t.Fatalf("open 2: %v", err)
}
defer syscall.Close(f2)
var before1, before2 unix.Stat_t
if err := unix.Fstatat(f1, "file", &before1, 0); err != nil {
t.Fatalf("Fstatat: %v", err)
}
if err := unix.Fstatat(f2, "file", &before2, 0); err != nil {
t.Fatalf("Fstatat: %v", err)
}
if err := renameat.Renameat(f1, "file", f2, "file", renameat.RENAME_EXCHANGE); err != nil {
if err == unix.ENOSYS {
t.Skip("rename EXCHANGE not support on current system")
} else {
t.Errorf("rename EXCHANGE: %v", err)
}
}
var after1, after2 unix.Stat_t
if err := unix.Fstatat(f1, "file", &after1, 0); err != nil {
t.Fatalf("Fstatat: %v", err)
}
if err := unix.Fstatat(f2, "file", &after2, 0); err != nil {
t.Fatalf("Fstatat: %v", err)
}
clearCtime := func(s *unix.Stat_t) {
s.Ctim.Sec = 0
s.Ctim.Nsec = 0
}
clearCtime(&after1)
clearCtime(&after2)
clearCtime(&before2)
clearCtime(&before1)
if diff := pretty.Compare(after1, before2); diff != "" {
t.Errorf("after1, before2: %s", diff)
}
if !reflect.DeepEqual(after2, before1) {
t.Errorf("after2, before1: %#v, %#v", after2, before1)
}
root := tc.loopback.EmbeddedInode().Root()
ino1 := root.GetChild("file")
if ino1 == nil {
t.Fatalf("root.GetChild(%q): null inode", "file")
}
ino2 := root.GetChild("dir").GetChild("file")
if ino2 == nil {
t.Fatalf("dir.GetChild(%q): null inode", "file")
}
if ino1.StableAttr().Ino != after1.Ino {
t.Errorf("got inode %d for %q, want %d", ino1.StableAttr().Ino, "file", after1.Ino)
}
if ino2.StableAttr().Ino != after2.Ino {
t.Errorf("got inode %d for %q want %d", ino2.StableAttr().Ino, "dir/file", after2.Ino)
}
}
func TestLoopbackNonRoot(t *testing.T) {
backing := t.TempDir()
backing2 := t.TempDir()
content := []byte("hello")
if err := os.WriteFile(backing+"/file.txt", content, 0666); err != nil {
t.Fatal(err)
}
lnode, err := NewLoopbackRoot(backing)
if err != nil {
t.Fatal(err)
}
differentRoot, err := NewLoopbackRoot(backing2)
if err != nil {
t.Fatal(err)
}
root := &Inode{}
mnt, _ := testMount(t, root, &Options{
OnAdd: func(ctx context.Context) {
sub := root.NewPersistentInode(ctx, lnode, StableAttr{Mode: fuse.S_IFDIR})
root.AddChild("sub", sub, true)
sub2 := root.NewPersistentInode(ctx, differentRoot, StableAttr{Mode: fuse.S_IFDIR})
root.AddChild("differentRoot", sub2, true)
},
})
fn := mnt + "/sub/file.txt"
fi, err := os.Lstat(fn)
if err != nil {
t.Fatal(err)
}
if fi.Size() != int64(len(content)) {
t.Errorf("got %d bytes, want %d", fi.Size(), len(content))
}
if err := syscall.Rename(fn, mnt+"/file"); err != syscall.EXDEV {
t.Errorf("got %v, want EXDEV", err)
}
if err := syscall.Rename(fn, mnt+"/differentRoot/file"); err != syscall.EXDEV {
t.Fatalf("got %v, want EXDEV", err)
}
if err := os.Mkdir(mnt+"/sub/sub2", 0755); err != nil {
t.Fatalf("Mkdir: %v", err)
}
fn2 := mnt + "/sub/sub2/renamed"
if err := syscall.Rename(fn, fn2); err != nil {
t.Fatalf("got %v, want EXDEV", err)
}
data, err := os.ReadFile(fn2)
if err != nil {
t.Fatalf("ReadFile: %v", err)
}
if bytes.Compare(data, content) != 0 {
t.Errorf("got %q, want %q", data, content)
}
}
|
