chmod function

void chmod(String filename, String permissions)

Change the permission of filename.

Pass in the permissions as an octal string e.g. 777 to change the file permissions.

If the call fails a PosixException is thrown with the value of errno.

Implementation

void chmod(
  String filename,
  String permissions,
) {
  final _permissions = int.parse(permissions, radix: 8);
  final cFilename = filename.toNativeUtf8();

  clearErrno();

  _chmod ??= Libc().dylib.lookupFunction<
      ffi.Int32 Function(ffi.Pointer<Utf8>, ffi.Uint32), _dart_chmod>('chmod');
  final results = _chmod!(
    cFilename,
    _permissions,
  );
  malloc.free(cFilename);

  if (results != 0) {
    final error = errno();
    throw PosixException('chown failed error: ${strerror(error)}', error);
  }
}