// Truncate changes the size of the named file.
// If the file is a symbolic link, it changes the size of the link's target.
// If there is an error, it will be of type *PathError.
func Truncate(name string, size int64) error {
var d syscall.Dir
d.Null()
d.Length = size
var buf [syscall.STATFIXLEN]byte
n, err := d.Marshal(buf[:])
if err != nil {
return &PathError{"truncate", name, err}
}
if err = syscall.Wstat(name, buf[:n]); err != nil {
return &PathError{"truncate", name, err}
}
return nil
}
// Truncate changes the size of the file.
// It does not change the I/O offset.
// If there is an error, it will be of type *PathError.
func (f *File) Truncate(size int64) error {
var d syscall.Dir
d.Null()
d.Length = size
var buf [syscall.STATFIXLEN]byte
n, err := d.Marshal(buf[:])
if err != nil {
return &PathError{"truncate", f.name, err}
}
if err = syscall.Fwstat(f.fd, buf[:n]); err != nil {
return &PathError{"truncate", f.name, err}
}
return nil
}
