1  /* Copyright (C) 1991-2023 Free Software Foundation, Inc.
       2     This file is part of the GNU C Library.
       3  
       4     The GNU C Library is free software; you can redistribute it and/or
       5     modify it under the terms of the GNU Lesser General Public
       6     License as published by the Free Software Foundation; either
       7     version 2.1 of the License, or (at your option) any later version.
       8  
       9     The GNU C Library is distributed in the hope that it will be useful,
      10     but WITHOUT ANY WARRANTY; without even the implied warranty of
      11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      12     Lesser General Public License for more details.
      13  
      14     You should have received a copy of the GNU Lesser General Public
      15     License along with the GNU C Library; if not, see
      16     <https://www.gnu.org/licenses/>.  */
      17  
      18  #include <errno.h>
      19  #include <stddef.h>
      20  #include <unistd.h>
      21  #include <hurd.h>
      22  #include <fcntl.h>
      23  
      24  /* Change the owner and group of FILE; if it's a link, do the link and
      25     not the target.  */
      26  int
      27  __lchown (const char *file, uid_t owner, gid_t group)
      28  {
      29    error_t err;
      30    file_t port = __file_name_lookup (file, O_NOLINK, 0);
      31    if (port == MACH_PORT_NULL)
      32      return -1;
      33    err = __file_chown (port, owner, group);
      34    __mach_port_deallocate (__mach_task_self (), port);
      35    if (err)
      36      return __hurd_fail (err);
      37    return 0;
      38  }
      39  
      40  weak_alias (__lchown, lchown)