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Fix createOrOpenFile, merge issues for openFile and lint issues

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aneesh-n 2024-12-03 21:51:39 +05:30
parent 8e45f4ce5c
commit 9baa37a73c
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GPG key ID: 6F5A52831C046F44
3 changed files with 35 additions and 39 deletions
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29
internal/restorer/fileswriter_unix.go
View file

@ -23,37 +23,30 @@ func (fw *filesWriter) OpenFile(createSize int64, path string, fileInfo *fileInf
// been created. Otherwise it opens the file with only write only option.
func (fw *filesWriter) openFile(createSize int64, path string, _ *fileInfo) (file *os.File, err error) {
if createSize >= 0 {
file, err = openFileWithCreate(path)
file, err = fs.OpenFile(path, fs.O_CREATE|fs.O_WRONLY|fs.O_NOFOLLOW, 0600)
if fs.IsAccessDenied(err) {
// If file is readonly, clear the readonly flag by resetting the
// permissions of the file and try again
// as the metadata will be set again in the second pass and the
// readonly flag will be applied again if needed.
err = fs.ResetPermissions(path)
if err != nil {
if err = fs.ResetPermissions(path); err != nil {
return nil, err
}
file, err = openFileWithTruncWrite(path)
if file, err = fs.OpenFile(path, fs.O_WRONLY|fs.O_NOFOLLOW, 0600); err != nil {
return nil, err
}
} else if err != nil && (errors.Is(err, syscall.ELOOP) || errors.Is(err, syscall.EISDIR)) {
// symlink or directory, try to remove it later on
file = nil
} else if err != nil {
return nil, err
}
} else {
flags := os.O_WRONLY
file, err = os.OpenFile(path, flags, 0600)
file, err = openFile(path)
}
return file, err
}
// openFileWithCreate opens the file with os.O_CREATE flag along with os.O_TRUNC and os.O_WRONLY.
func openFileWithCreate(path string) (file *os.File, err error) {
flags := os.O_CREATE | os.O_TRUNC | os.O_WRONLY
return os.OpenFile(path, flags, 0600)
}
// openFileWithTruncWrite opens the file without os.O_CREATE flag along with os.O_TRUNC and os.O_WRONLY.
func openFileWithTruncWrite(path string) (file *os.File, err error) {
flags := os.O_TRUNC | os.O_WRONLY
return os.OpenFile(path, flags, 0600)
}
// CleanupPath performs clean up for the specified path.
func CleanupPath(_ string) {
// no-op

44
internal/restorer/fileswriter_windows.go
View file

@ -27,26 +27,30 @@ import (
// less streams, then the extra streams need to be removed from the main file. The stream names are present
// as the value in the generic attribute TypeHasAds.
func createOrOpenFile(path string, createSize int64, fileInfo *fileInfo, allowRecursiveDelete bool) (*os.File, error) {
var mainPath string
mainPath, f, err := openFileImpl(path, createSize, fileInfo)
if err != nil && fs.IsAccessDenied(err) {
// If file is readonly, clear the readonly flag by resetting the
// permissions of the file and try again
// as the metadata will be set again in the second pass and the
// readonly flag will be applied again if needed.
if err = fs.ResetPermissions(mainPath); err != nil {
if createSize >= 0 {
var mainPath string
mainPath, f, err := openFileImpl(path, createSize, fileInfo)
if err != nil && fs.IsAccessDenied(err) {
// If file is readonly, clear the readonly flag by resetting the
// permissions of the file and try again
// as the metadata will be set again in the second pass and the
// readonly flag will be applied again if needed.
if err = fs.ResetPermissions(mainPath); err != nil {
return nil, err
}
if f, err = fs.OpenFile(path, fs.O_WRONLY|fs.O_NOFOLLOW, 0600); err != nil {
return nil, err
}
} else if err != nil && (errors.Is(err, syscall.ELOOP) || errors.Is(err, syscall.EISDIR)) {
// symlink or directory, try to remove it later on
f = nil
} else if err != nil {
return nil, err
}
if f, err = fs.OpenFile(path, fs.O_WRONLY|fs.O_NOFOLLOW, 0600); err != nil {
return nil, err
}
} else if err != nil && (errors.Is(err, syscall.ELOOP) || errors.Is(err, syscall.EISDIR)) {
// symlink or directory, try to remove it later on
f = nil
} else if err != nil {
return nil, err
return postCreateFile(f, path, createSize, allowRecursiveDelete, fileInfo.sparse)
} else {
return openFile(path)
}
return postCreateFile(f, path, createSize, allowRecursiveDelete, fileInfo.sparse)
}
// openFileImpl is the actual open file implementation.
@ -122,7 +126,7 @@ func handleCreateFileNonAds(path string, fileIn *os.File, isAlreadyExists bool)
return fileIn, nil
} else {
// If the non-ads file did not exist, try creating the file with create flag.
return os.OpenFile(path, fs.O_CREATE|fs.O_WRONLY|fs.O_NOFOLLOW, 0600)
return fs.OpenFile(path, fs.O_CREATE|fs.O_WRONLY|fs.O_NOFOLLOW, 0600)
}
}
@ -137,7 +141,7 @@ func handleCreateFileAds(path string, fileIn *os.File, hasAds, isAds, isAlreadyE
// If the ads related file did not exist, first check if it is a hasAds or isAds
if isAds {
// If it is an ads file, then we can simple open it with create options without worrying about overwriting.
return os.OpenFile(path, fs.O_CREATE|fs.O_WRONLY|fs.O_NOFOLLOW, 0600)
return fs.OpenFile(path, fs.O_CREATE|fs.O_WRONLY|fs.O_NOFOLLOW, 0600)
}
if hasAds {
// If it is the main file which has ads files attached, we will check again if the main file wasn't created
@ -148,7 +152,7 @@ func handleCreateFileAds(path string, fileIn *os.File, hasAds, isAds, isAlreadyE
// We confirmed that the main file still doesn't exist after syncing.
// Hence creating the file with the create flag.
// Directly open the main file with create option as it should not be encrypted.
return os.OpenFile(path, fs.O_CREATE|fs.O_WRONLY|fs.O_NOFOLLOW, 0600)
return fs.OpenFile(path, fs.O_CREATE|fs.O_WRONLY|fs.O_NOFOLLOW, 0600)
} else {
// Some other error occured so stop processing and return it.
return nil, err

1
internal/restorer/restorer_test.go
View file

@ -83,7 +83,6 @@ type Dir struct {
Mode os.FileMode
ModTime time.Time
attributes *FileAttributes
isAds bool
hasAds bool
}