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backend: consistently use os package for filesystem access

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The go std library should be good enough to manage the files in the
backend and cache folders.
This commit is contained in:
Michael Eischer 2024-07-21 15:22:21 +02:00
parent ca1e5e10b6
commit 24f4e780f1
9 changed files with 33 additions and 50 deletions
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3
cmd/restic/cmd_cache.go
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@ -10,7 +10,6 @@ import (
"github.com/restic/restic/internal/backend/cache"
"github.com/restic/restic/internal/errors"
"github.com/restic/restic/internal/fs"
"github.com/restic/restic/internal/ui"
"github.com/restic/restic/internal/ui/table"
"github.com/spf13/cobra"
@ -89,7 +88,7 @@ func runCache(opts CacheOptions, gopts GlobalOptions, args []string) error {
for _, item := range oldDirs {
dir := filepath.Join(cachedir, item.Name())
err = fs.RemoveAll(dir)
err = os.RemoveAll(dir)
if err != nil {
Warnf("unable to remove %v: %v\n", dir, err)
}

3
cmd/restic/cmd_check.go
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@ -14,7 +14,6 @@ import (
"github.com/restic/restic/internal/backend/cache"
"github.com/restic/restic/internal/checker"
"github.com/restic/restic/internal/errors"
"github.com/restic/restic/internal/fs"
"github.com/restic/restic/internal/repository"
"github.com/restic/restic/internal/restic"
"github.com/restic/restic/internal/ui"
@ -202,7 +201,7 @@ func prepareCheckCache(opts CheckOptions, gopts *GlobalOptions, printer progress
printer.P("using temporary cache in %v\n", tempdir)
cleanup = func() {
err := fs.RemoveAll(tempdir)
err := os.RemoveAll(tempdir)
if err != nil {
printer.E("error removing temporary cache directory: %v\n", err)
}

3
cmd/restic/global.go
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@ -29,7 +29,6 @@ import (
"github.com/restic/restic/internal/backend/sftp"
"github.com/restic/restic/internal/backend/swift"
"github.com/restic/restic/internal/debug"
"github.com/restic/restic/internal/fs"
"github.com/restic/restic/internal/options"
"github.com/restic/restic/internal/repository"
"github.com/restic/restic/internal/restic"
@ -548,7 +547,7 @@ func OpenRepository(ctx context.Context, opts GlobalOptions) (*repository.Reposi
}
for _, item := range oldCacheDirs {
dir := filepath.Join(c.Base, item.Name())
err = fs.RemoveAll(dir)
err = os.RemoveAll(dir)
if err != nil {
Warnf("unable to remove %v: %v\n", dir, err)
}

13
internal/backend/cache/cache.go vendored
View File

@ -12,7 +12,6 @@ import (
"github.com/pkg/errors"
"github.com/restic/restic/internal/backend"
"github.com/restic/restic/internal/debug"
"github.com/restic/restic/internal/fs"
"github.com/restic/restic/internal/restic"
)
@ -54,7 +53,7 @@ const cachedirTagSignature = "Signature: 8a477f597d28d172789f06886806bc55\n"
func writeCachedirTag(dir string) error {
tagfile := filepath.Join(dir, "CACHEDIR.TAG")
f, err := fs.OpenFile(tagfile, os.O_CREATE|os.O_EXCL|os.O_WRONLY, fileMode)
f, err := os.OpenFile(tagfile, os.O_CREATE|os.O_EXCL|os.O_WRONLY, fileMode)
if err != nil {
if errors.Is(err, os.ErrExist) {
return nil
@ -85,7 +84,7 @@ func New(id string, basedir string) (c *Cache, err error) {
}
}
err = fs.MkdirAll(basedir, dirMode)
err = os.MkdirAll(basedir, dirMode)
if err != nil {
return nil, errors.WithStack(err)
}
@ -113,7 +112,7 @@ func New(id string, basedir string) (c *Cache, err error) {
case errors.Is(err, os.ErrNotExist):
// Create the repo cache dir. The parent exists, so Mkdir suffices.
err := fs.Mkdir(cachedir, dirMode)
err := os.Mkdir(cachedir, dirMode)
switch {
case err == nil:
created = true
@ -134,7 +133,7 @@ func New(id string, basedir string) (c *Cache, err error) {
}
for _, p := range cacheLayoutPaths {
if err = fs.MkdirAll(filepath.Join(cachedir, p), dirMode); err != nil {
if err = os.MkdirAll(filepath.Join(cachedir, p), dirMode); err != nil {
return nil, errors.WithStack(err)
}
}
@ -152,7 +151,7 @@ func New(id string, basedir string) (c *Cache, err error) {
// directory d to the current time.
func updateTimestamp(d string) error {
t := time.Now()
return fs.Chtimes(d, t, t)
return os.Chtimes(d, t, t)
}
// MaxCacheAge is the default age (30 days) after which cache directories are considered old.
@ -165,7 +164,7 @@ func validCacheDirName(s string) bool {
// listCacheDirs returns the list of cache directories.
func listCacheDirs(basedir string) ([]os.FileInfo, error) {
f, err := fs.Open(basedir)
f, err := os.Open(basedir)
if err != nil {
if errors.Is(err, os.ErrNotExist) {
err = nil

21
internal/backend/cache/file.go vendored
View File

@ -12,7 +12,6 @@ import (
"github.com/restic/restic/internal/backend/util"
"github.com/restic/restic/internal/crypto"
"github.com/restic/restic/internal/debug"
"github.com/restic/restic/internal/fs"
"github.com/restic/restic/internal/restic"
)
@ -44,7 +43,7 @@ func (c *Cache) load(h backend.Handle, length int, offset int64) (io.ReadCloser,
return nil, false, errors.New("cannot be cached")
}
f, err := fs.Open(c.filename(h))
f, err := os.Open(c.filename(h))
if err != nil {
return nil, false, errors.WithStack(err)
}
@ -91,7 +90,7 @@ func (c *Cache) save(h backend.Handle, rd io.Reader) error {
finalname := c.filename(h)
dir := filepath.Dir(finalname)
err := fs.Mkdir(dir, 0700)
err := os.Mkdir(dir, 0700)
if err != nil && !errors.Is(err, os.ErrExist) {
return err
}
@ -106,26 +105,26 @@ func (c *Cache) save(h backend.Handle, rd io.Reader) error {
n, err := io.Copy(f, rd)
if err != nil {
_ = f.Close()
_ = fs.Remove(f.Name())
_ = os.Remove(f.Name())
return errors.Wrap(err, "Copy")
}
if n <= int64(crypto.CiphertextLength(0)) {
_ = f.Close()
_ = fs.Remove(f.Name())
_ = os.Remove(f.Name())
debug.Log("trying to cache truncated file %v, removing", h)
return nil
}
// Close, then rename. Windows doesn't like the reverse order.
if err = f.Close(); err != nil {
_ = fs.Remove(f.Name())
_ = os.Remove(f.Name())
return errors.WithStack(err)
}
err = fs.Rename(f.Name(), finalname)
err = os.Rename(f.Name(), finalname)
if err != nil {
_ = fs.Remove(f.Name())
_ = os.Remove(f.Name())
}
if runtime.GOOS == "windows" && errors.Is(err, os.ErrPermission) {
// On Windows, renaming over an existing file is ok
@ -162,7 +161,7 @@ func (c *Cache) remove(h backend.Handle) (bool, error) {
return false, nil
}
err := fs.Remove(c.filename(h))
err := os.Remove(c.filename(h))
removed := err == nil
if errors.Is(err, os.ErrNotExist) {
err = nil
@ -189,7 +188,7 @@ func (c *Cache) Clear(t restic.FileType, valid restic.IDSet) error {
}
// ignore ErrNotExist to gracefully handle multiple processes running Clear() concurrently
if err = fs.Remove(c.filename(backend.Handle{Type: t, Name: id.String()})); err != nil && !errors.Is(err, os.ErrNotExist) {
if err = os.Remove(c.filename(backend.Handle{Type: t, Name: id.String()})); err != nil && !errors.Is(err, os.ErrNotExist) {
return err
}
}
@ -236,6 +235,6 @@ func (c *Cache) Has(h backend.Handle) bool {
return false
}
_, err := fs.Stat(c.filename(h))
_, err := os.Stat(c.filename(h))
return err == nil
}

3
internal/backend/cache/file_test.go vendored
View File

@ -12,7 +12,6 @@ import (
"github.com/restic/restic/internal/backend"
"github.com/restic/restic/internal/errors"
"github.com/restic/restic/internal/fs"
"github.com/restic/restic/internal/restic"
rtest "github.com/restic/restic/internal/test"
@ -278,7 +277,7 @@ func TestFileSaveConcurrent(t *testing.T) {
func TestFileSaveAfterDamage(t *testing.T) {
c := TestNewCache(t)
rtest.OK(t, fs.RemoveAll(c.path))
rtest.OK(t, os.RemoveAll(c.path))
// save a few bytes of data in the cache
data := rtest.Random(123456789, 42)

24
internal/backend/local/local.go
View File

@ -40,7 +40,7 @@ func NewFactory() location.Factory {
func open(cfg Config) (*Local, error) {
l := layout.NewDefaultLayout(cfg.Path, filepath.Join)
fi, err := fs.Stat(l.Filename(backend.Handle{Type: backend.ConfigFile}))
fi, err := os.Stat(l.Filename(backend.Handle{Type: backend.ConfigFile}))
m := util.DeriveModesFromFileInfo(fi, err)
debug.Log("using (%03O file, %03O dir) permissions", m.File, m.Dir)
@ -68,14 +68,14 @@ func Create(_ context.Context, cfg Config) (*Local, error) {
}
// test if config file already exists
_, err = fs.Lstat(be.Filename(backend.Handle{Type: backend.ConfigFile}))
_, err = os.Lstat(be.Filename(backend.Handle{Type: backend.ConfigFile}))
if err == nil {
return nil, errors.New("config file already exists")
}
// create paths for data and refs
for _, d := range be.Paths() {
err := fs.MkdirAll(d, be.Modes.Dir)
err := os.MkdirAll(d, be.Modes.Dir)
if err != nil {
return nil, errors.WithStack(err)
}
@ -127,7 +127,7 @@ func (b *Local) Save(_ context.Context, h backend.Handle, rd backend.RewindReade
debug.Log("error %v: creating dir", err)
// error is caused by a missing directory, try to create it
mkdirErr := fs.MkdirAll(dir, b.Modes.Dir)
mkdirErr := os.MkdirAll(dir, b.Modes.Dir)
if mkdirErr != nil {
debug.Log("error creating dir %v: %v", dir, mkdirErr)
} else {
@ -147,7 +147,7 @@ func (b *Local) Save(_ context.Context, h backend.Handle, rd backend.RewindReade
// temporary's name and no other goroutine will get the same data to
// Save, so the temporary name should never be reused by another
// goroutine.
_ = fs.Remove(f.Name())
_ = os.Remove(f.Name())
}
}(f)
@ -211,7 +211,7 @@ func (b *Local) Load(ctx context.Context, h backend.Handle, length int, offset i
}
func (b *Local) openReader(_ context.Context, h backend.Handle, length int, offset int64) (io.ReadCloser, error) {
f, err := fs.Open(b.Filename(h))
f, err := os.Open(b.Filename(h))
if err != nil {
return nil, err
}
@ -245,7 +245,7 @@ func (b *Local) openReader(_ context.Context, h backend.Handle, length int, offs
// Stat returns information about a blob.
func (b *Local) Stat(_ context.Context, h backend.Handle) (backend.FileInfo, error) {
fi, err := fs.Stat(b.Filename(h))
fi, err := os.Stat(b.Filename(h))
if err != nil {
return backend.FileInfo{}, errors.WithStack(err)
}
@ -258,12 +258,12 @@ func (b *Local) Remove(_ context.Context, h backend.Handle) error {
fn := b.Filename(h)
// reset read-only flag
err := fs.Chmod(fn, 0666)
err := os.Chmod(fn, 0666)
if err != nil && !os.IsPermission(err) {
return errors.WithStack(err)
}
return fs.Remove(fn)
return os.Remove(fn)
}
// List runs fn for each file in the backend which has the type t. When an
@ -289,7 +289,7 @@ func (b *Local) List(ctx context.Context, t backend.FileType, fn func(backend.Fi
// Also, visitDirs assumes it sees a directory full of directories, while
// visitFiles wants a directory full or regular files.
func visitDirs(ctx context.Context, dir string, fn func(backend.FileInfo) error) error {
d, err := fs.Open(dir)
d, err := os.Open(dir)
if err != nil {
return err
}
@ -316,7 +316,7 @@ func visitDirs(ctx context.Context, dir string, fn func(backend.FileInfo) error)
}
func visitFiles(ctx context.Context, dir string, fn func(backend.FileInfo) error, ignoreNotADirectory bool) error {
d, err := fs.Open(dir)
d, err := os.Open(dir)
if err != nil {
return err
}
@ -362,7 +362,7 @@ func visitFiles(ctx context.Context, dir string, fn func(backend.FileInfo) error
// Delete removes the repository and all files.
func (b *Local) Delete(_ context.Context) error {
return fs.RemoveAll(b.Path)
return os.RemoveAll(b.Path)
}
// Close closes all open files.

4
internal/backend/local/local_unix.go
View File

@ -8,8 +8,6 @@ import (
"os"
"runtime"
"syscall"
"github.com/restic/restic/internal/fs"
)
// fsyncDir flushes changes to the directory dir.
@ -45,5 +43,5 @@ func isMacENOTTY(err error) bool {
// set file to readonly
func setFileReadonly(f string, mode os.FileMode) error {
return fs.Chmod(f, mode&^0222)
return os.Chmod(f, mode&^0222)
}

9
internal/fs/file.go
View File

@ -88,15 +88,6 @@ func OpenFile(name string, flag int, perm os.FileMode) (*os.File, error) {
return os.OpenFile(fixpath(name), flag, perm)
}
// Chtimes changes the access and modification times of the named file,
// similar to the Unix utime() or utimes() functions.
//
// The underlying filesystem may truncate or round the values to a less
// precise time unit. If there is an error, it will be of type *PathError.
func Chtimes(name string, atime time.Time, mtime time.Time) error {
return os.Chtimes(fixpath(name), atime, mtime)
}
// IsAccessDenied checks if the error is due to permission error.
func IsAccessDenied(err error) bool {
return os.IsPermission(err)