lib/copy-acl.c

   1 /* Copy access control list from one file to file.  -*- coding: utf-8 -*-
   2
   3    Copyright (C) 2002-2003, 2005-2020 Free Software Foundation, Inc.
   4
   5    This program is free software: you can redistribute it and/or modify
   6    it under the terms of the GNU General Public License as published by
   7    the Free Software Foundation; either version 3 of the License, or
   8    (at your option) any later version.
   9
  10    This program is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13    GNU General Public License for more details.
  14
  15    You should have received a copy of the GNU General Public License
  16    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  17
  18    Written by Paul Eggert, Andreas Grünbacher, and Bruno Haible.  */
  19
  20 #include <config.h>
  21
  22 #include "acl.h"
  23
  24 #include <errno.h>
  25
  26 #include "quote.h"
  27 #include "error.h"
  28 #include "gettext.h"
  29 #define _(msgid) gettext (msgid)
  30
  31
  32 /* Copy access control lists from one file to another. If SOURCE_DESC is
  33    a valid file descriptor, use file descriptor operations, else use
  34    filename based operations on SRC_NAME. Likewise for DEST_DESC and
  35    DST_NAME.
  36    If access control lists are not available, fchmod the target file to
  37    MODE.  Also sets the non-permission bits of the destination file
  38    (S_ISUID, S_ISGID, S_ISVTX) to those from MODE if any are set.
  39    Return 0 if successful, otherwise output a diagnostic and return a
  40    negative error code.  */
  41
  42 int
  43 copy_acl (const char *src_name, int source_desc, const char *dst_name,
  44           int dest_desc, mode_t mode)
  45 {
  46   int ret = qcopy_acl (src_name, source_desc, dst_name, dest_desc, mode);
  47   switch (ret)
  48     {
  49     case -2:
  50       error (0, errno, "%s", quote (src_name));
  51       break;
  52
  53     case -1:
  54       error (0, errno, _("preserving permissions for %s"), quote (dst_name));
  55       break;
  56
  57     default:
  58       break;
  59     }
  60   return ret;
  61 }