示例#1
0
文件: file_plan9.go 项目: Ericean/go
func rename(oldname, newname string) error {
	dirname := oldname[:lastIndex(oldname, '/')+1]
	if hasPrefix(newname, dirname) {
		newname = newname[len(dirname):]
	} else {
		return &LinkError{"rename", oldname, newname, ErrInvalid}
	}

	// If newname still contains slashes after removing the oldname
	// prefix, the rename is cross-directory and must be rejected.
	// This case is caught by d.Marshal below.

	var d syscall.Dir

	d.Null()
	d.Name = newname

	buf := make([]byte, syscall.STATFIXLEN+len(d.Name))
	n, err := d.Marshal(buf[:])
	if err != nil {
		return &LinkError{"rename", oldname, newname, err}
	}
	if err = syscall.Wstat(oldname, buf[:n]); err != nil {
		return &LinkError{"rename", oldname, newname, err}
	}
	return nil
}
示例#2
0
// Rename renames a file.
func Rename(oldname, newname string) error {
	var d syscall.Dir

	d.Null()
	d.Name = newname

	buf := make([]byte, syscall.STATFIXLEN+len(d.Name))
	n, err := d.Marshal(buf[:])
	if err != nil {
		return &PathError{"rename", oldname, err}
	}
	if err = syscall.Wstat(oldname, buf[:n]); err != nil {
		return &PathError{"rename", oldname, err}
	}
	return nil
}
示例#3
0
文件: file_plan9.go 项目: achanda/go
func rename(oldname, newname string) error {
	dirname := oldname[:lastIndex(oldname, '/')+1]
	if hasPrefix(newname, dirname) {
		newname = newname[len(dirname):]
	} else {
		return &LinkError{"rename", oldname, newname, ErrInvalid}
	}

	// If newname still contains slashes after removing the oldname
	// prefix, the rename is cross-directory and must be rejected.
	if lastIndex(newname, '/') >= 0 {
		return &LinkError{"rename", oldname, newname, ErrInvalid}
	}

	var d syscall.Dir

	d.Null()
	d.Name = newname

	buf := make([]byte, syscall.STATFIXLEN+len(d.Name))
	n, err := d.Marshal(buf[:])
	if err != nil {
		return &LinkError{"rename", oldname, newname, err}
	}

	// If newname already exists and is not a directory, rename replaces it.
	f, err := Stat(dirname + newname)
	if err == nil && !f.IsDir() {
		Remove(dirname + newname)
	}

	if err = syscall.Wstat(oldname, buf[:n]); err != nil {
		return &LinkError{"rename", oldname, newname, err}
	}
	return nil
}