// Chmod changes the mode of the named file to mode.
// If the file is a symbolic link, it changes the mode of the link's target.
// If there is an error, it will be of type *PathError.
func Chmod(name string, mode FileMode) error {
var d syscall.Dir
odir, e := dirstat(name)
if e != nil {
return &PathError{"chmod", name, e}
}
d.Null()
d.Mode = odir.Mode&^chmodMask | syscallMode(mode)&chmodMask
var buf [syscall.STATFIXLEN]byte
n, err := d.Marshal(buf[:])
if err != nil {
return &PathError{"chmod", name, err}
}
if err = syscall.Wstat(name, buf[:n]); err != nil {
return &PathError{"chmod", name, err}
}
return nil
}
// Chmod changes the mode of the file to mode.
// If there is an error, it will be of type *PathError.
func (f *File) Chmod(mode FileMode) error {
var d syscall.Dir
odir, e := dirstat(f)
if e != nil {
return &PathError{"chmod", f.name, e}
}
d.Null()
d.Mode = odir.Mode&^chmodMask | syscallMode(mode)&chmodMask
var buf [syscall.STATFIXLEN]byte
n, err := d.Marshal(buf[:])
if err != nil {
return &PathError{"chmod", f.name, err}
}
if err = syscall.Fwstat(f.fd, buf[:n]); err != nil {
return &PathError{"chmod", f.name, err}
}
return nil
}