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Code Issues Releases Wiki Activity

fs: move NodeFromFileInfo into FS interface

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This commit is contained in:
Michael Eischer 2024-08-28 10:58:07 +02:00
parent c3b3120e10
commit 75711446e1
12 changed files with 69 additions and 41 deletions
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2
internal/archiver/archiver.go
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@ -256,7 +256,7 @@ func (arch *Archiver) trackItem(item string, previous, current *restic.Node, s I
// nodeFromFileInfo returns the restic node from an os.FileInfo.
func (arch *Archiver) nodeFromFileInfo(snPath, filename string, fi os.FileInfo, ignoreXattrListError bool) (*restic.Node, error) {
node, err := fs.NodeFromFileInfo(filename, fi, ignoreXattrListError)
node, err := arch.FS.NodeFromFileInfo(filename, fi, ignoreXattrListError)
if !arch.WithAtime {
node.AccessTime = node.ModTime
}

11
internal/archiver/archiver_test.go
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@ -556,7 +556,7 @@ func rename(t testing.TB, oldname, newname string) {
}
}
func nodeFromFI(t testing.TB, filename string, fi os.FileInfo) *restic.Node {
func nodeFromFI(t testing.TB, fs fs.FS, filename string, fi os.FileInfo) *restic.Node {
node, err := fs.NodeFromFileInfo(filename, fi, false)
if err != nil {
t.Fatal(err)
@ -688,7 +688,7 @@ func TestFileChanged(t *testing.T) {
fs := &fs.Local{}
fiBefore := lstat(t, filename)
node := nodeFromFI(t, filename, fiBefore)
node := nodeFromFI(t, fs, filename, fiBefore)
if fileChanged(fs, fiBefore, node, 0) {
t.Fatalf("unchanged file detected as changed")
@ -729,7 +729,7 @@ func TestFilChangedSpecialCases(t *testing.T) {
t.Run("type-change", func(t *testing.T) {
fi := lstat(t, filename)
node := nodeFromFI(t, filename, fi)
node := nodeFromFI(t, &fs.Local{}, filename, fi)
node.Type = "restic.NodeTypeSymlink"
if !fileChanged(&fs.Local{}, fi, node, 0) {
t.Fatal("node with changed type detected as unchanged")
@ -2275,13 +2275,14 @@ func TestMetadataChanged(t *testing.T) {
// get metadata
fi := lstat(t, "testfile")
want, err := fs.NodeFromFileInfo("testfile", fi, false)
localFS := &fs.Local{}
want, err := localFS.NodeFromFileInfo("testfile", fi, false)
if err != nil {
t.Fatal(err)
}
fs := &StatFS{
FS: fs.Local{},
FS: localFS,
OverrideLstat: map[string]os.FileInfo{
"testfile": fi,
},

3
internal/archiver/archiver_unix_test.go
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@ -58,10 +58,11 @@ func wrapIrregularFileInfo(fi os.FileInfo) os.FileInfo {
func statAndSnapshot(t *testing.T, repo archiverRepo, name string) (*restic.Node, *restic.Node) {
fi := lstat(t, name)
fs := &fs.Local{}
want, err := fs.NodeFromFileInfo(name, fi, false)
rtest.OK(t, err)
_, node := snapshot(t, repo, fs.Local{}, nil, name)
_, node := snapshot(t, repo, fs, nil, name)
return want, node
}

4
internal/archiver/file_saver_test.go
View File

@ -30,7 +30,7 @@ func createTestFiles(t testing.TB, num int) (files []string) {
return files
}
func startFileSaver(ctx context.Context, t testing.TB) (*fileSaver, context.Context, *errgroup.Group) {
func startFileSaver(ctx context.Context, t testing.TB, fs fs.FS) (*fileSaver, context.Context, *errgroup.Group) {
wg, ctx := errgroup.WithContext(ctx)
saveBlob := func(ctx context.Context, tpe restic.BlobType, buf *buffer, _ string, cb func(saveBlobResponse)) {
@ -67,7 +67,7 @@ func TestFileSaver(t *testing.T) {
completeFn := func(*restic.Node, ItemStats) {}
testFs := fs.Local{}
s, ctx, wg := startFileSaver(ctx, t)
s, ctx, wg := startFileSaver(ctx, t, testFs)
var results []futureNode

6
internal/fs/fs_local.go
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@ -3,6 +3,8 @@ package fs
import (
"os"
"path/filepath"
"github.com/restic/restic/internal/restic"
)
// Local is the local file system. Most methods are just passed on to the stdlib.
@ -57,6 +59,10 @@ func (fs Local) ExtendedStat(fi os.FileInfo) ExtendedFileInfo {
return ExtendedStat(fi)
}
func (fs Local) NodeFromFileInfo(path string, fi os.FileInfo, ignoreXattrListError bool) (*restic.Node, error) {
return nodeFromFileInfo(path, fi, ignoreXattrListError)
}
// Join joins any number of path elements into a single path, adding a
// Separator if necessary. Join calls Clean on the result; in particular, all
// empty strings are ignored. On Windows, the result is a UNC path if and only

12
internal/fs/fs_reader.go
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@ -10,6 +10,7 @@ import (
"time"
"github.com/restic/restic/internal/errors"
"github.com/restic/restic/internal/restic"
)
// Reader is a file system which provides a directory with a single file. When
@ -132,6 +133,17 @@ func (fs *Reader) ExtendedStat(fi os.FileInfo) ExtendedFileInfo {
}
}
func (fs *Reader) NodeFromFileInfo(path string, fi os.FileInfo, _ bool) (*restic.Node, error) {
node := buildBasicNode(path, fi)
// fill minimal info with current values for uid, gid
node.UID = uint32(os.Getuid())
node.GID = uint32(os.Getgid())
node.ChangeTime = node.ModTime
return node, nil
}
// Join joins any number of path elements into a single path, adding a
// Separator if necessary. Join calls Clean on the result; in particular, all
// empty strings are ignored. On Windows, the result is a UNC path if and only

3
internal/fs/interface.go
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@ -3,6 +3,8 @@ package fs
import (
"io"
"os"
"github.com/restic/restic/internal/restic"
)
// FS bundles all methods needed for a file system.
@ -12,6 +14,7 @@ type FS interface {
Lstat(name string) (os.FileInfo, error)
DeviceID(fi os.FileInfo) (deviceID uint64, err error)
ExtendedStat(fi os.FileInfo) ExtendedFileInfo
NodeFromFileInfo(path string, fi os.FileInfo, ignoreXattrListError bool) (*restic.Node, error)
Join(elem ...string) string
Separator() string

44
internal/fs/node.go
View File

@ -12,9 +12,25 @@ import (
"github.com/restic/restic/internal/restic"
)
// NodeFromFileInfo returns a new node from the given path and FileInfo. It
// nodeFromFileInfo returns a new node from the given path and FileInfo. It
// returns the first error that is encountered, together with a node.
func NodeFromFileInfo(path string, fi os.FileInfo, ignoreXattrListError bool) (*restic.Node, error) {
func nodeFromFileInfo(path string, fi os.FileInfo, ignoreXattrListError bool) (*restic.Node, error) {
node := buildBasicNode(path, fi)
stat := ExtendedStat(fi)
if err := nodeFillExtendedStat(node, path, &stat); err != nil {
return node, err
}
allowExtended, err := nodeFillGenericAttributes(node, path, &stat)
if allowExtended {
// Skip processing ExtendedAttributes if allowExtended is false.
err = errors.Join(err, nodeFillExtendedAttributes(node, path, ignoreXattrListError))
}
return node, err
}
func buildBasicNode(path string, fi os.FileInfo) *restic.Node {
mask := os.ModePerm | os.ModeType | os.ModeSetuid | os.ModeSetgid | os.ModeSticky
node := &restic.Node{
Path: path,
@ -27,9 +43,7 @@ func NodeFromFileInfo(path string, fi os.FileInfo, ignoreXattrListError bool) (*
if node.Type == restic.NodeTypeFile {
node.Size = uint64(fi.Size())
}
err := nodeFillExtra(node, path, fi, ignoreXattrListError)
return node, err
return node
}
func nodeTypeFromFileInfo(fi os.FileInfo) restic.NodeType {
@ -55,17 +69,7 @@ func nodeTypeFromFileInfo(fi os.FileInfo) restic.NodeType {
return restic.NodeTypeInvalid
}
func nodeFillExtra(node *restic.Node, path string, fi os.FileInfo, ignoreXattrListError bool) error {
if fi.Sys() == nil {
// fill minimal info with current values for uid, gid
node.UID = uint32(os.Getuid())
node.GID = uint32(os.Getgid())
node.ChangeTime = node.ModTime
return nil
}
stat := ExtendedStat(fi)
func nodeFillExtendedStat(node *restic.Node, path string, stat *ExtendedFileInfo) error {
node.Inode = stat.Inode
node.DeviceID = stat.DeviceID
node.ChangeTime = stat.ChangeTime
@ -99,13 +103,7 @@ func nodeFillExtra(node *restic.Node, path string, fi os.FileInfo, ignoreXattrLi
default:
return errors.Errorf("unsupported file type %q", node.Type)
}
allowExtended, err := nodeFillGenericAttributes(node, path, &stat)
if allowExtended {
// Skip processing ExtendedAttributes if allowExtended is false.
err = errors.Join(err, nodeFillExtendedAttributes(node, path, ignoreXattrListError))
}
return err
return nil
}
var (

11
internal/fs/node_test.go
View File

@ -29,11 +29,12 @@ func BenchmarkNodeFillUser(t *testing.B) {
}
path := tempfile.Name()
fs := Local{}
t.ResetTimer()
for i := 0; i < t.N; i++ {
_, err := NodeFromFileInfo(path, fi, false)
_, err := fs.NodeFromFileInfo(path, fi, false)
rtest.OK(t, err)
}
@ -53,11 +54,12 @@ func BenchmarkNodeFromFileInfo(t *testing.B) {
}
path := tempfile.Name()
fs := Local{}
t.ResetTimer()
for i := 0; i < t.N; i++ {
_, err := NodeFromFileInfo(path, fi, false)
_, err := fs.NodeFromFileInfo(path, fi, false)
if err != nil {
t.Fatal(err)
}
@ -250,9 +252,10 @@ func TestNodeRestoreAt(t *testing.T) {
fi, err := os.Lstat(nodePath)
rtest.OK(t, err)
n2, err := NodeFromFileInfo(nodePath, fi, false)
fs := &Local{}
n2, err := fs.NodeFromFileInfo(nodePath, fi, false)
rtest.OK(t, err)
n3, err := NodeFromFileInfo(nodePath, fi, true)
n3, err := fs.NodeFromFileInfo(nodePath, fi, true)
rtest.OK(t, err)
rtest.Assert(t, n2.Equals(*n3), "unexpected node info mismatch %v", cmp.Diff(n2, n3))

3
internal/fs/node_unix_test.go
View File

@ -119,7 +119,8 @@ func TestNodeFromFileInfo(t *testing.T) {
return
}
node, err := NodeFromFileInfo(test.filename, fi, false)
fs := &Local{}
node, err := fs.NodeFromFileInfo(test.filename, fi, false)
if err != nil {
t.Fatal(err)
}

5
internal/fs/node_windows_test.go
View File

@ -221,10 +221,11 @@ func restoreAndGetNode(t *testing.T, tempDir string, testNode *restic.Node, warn
})
test.OK(t, errors.Wrapf(err, "Failed to restore metadata for: %s", testPath))
fi, err := os.Lstat(testPath)
fs := &Local{}
fi, err := fs.Lstat(testPath)
test.OK(t, errors.Wrapf(err, "Could not Lstat for path: %s", testPath))
nodeFromFileInfo, err := NodeFromFileInfo(testPath, fi, false)
nodeFromFileInfo, err := fs.NodeFromFileInfo(testPath, fi, false)
test.OK(t, errors.Wrapf(err, "Could not get NodeFromFileInfo for path: %s", testPath))
return testPath, nodeFromFileInfo

6
internal/restic/tree_test.go
View File

@ -84,7 +84,8 @@ func TestNodeMarshal(t *testing.T) {
}
func TestNodeComparison(t *testing.T) {
fi, err := os.Lstat("tree_test.go")
fs := &fs.Local{}
fi, err := fs.Lstat("tree_test.go")
rtest.OK(t, err)
node, err := fs.NodeFromFileInfo("tree_test.go", fi, false)
@ -126,7 +127,8 @@ func TestTreeEqualSerialization(t *testing.T) {
builder := restic.NewTreeJSONBuilder()
for _, fn := range files[:i] {
fi, err := os.Lstat(fn)
fs := &fs.Local{}
fi, err := fs.Lstat(fn)
rtest.OK(t, err)
node, err := fs.NodeFromFileInfo(fn, fi, false)
rtest.OK(t, err)