1 /* Copy access control list from one file to another. -*- coding: utf-8 -*-
2
3 Copyright (C) 2002-2003, 2005-2023 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 "acl-internal.h"
25
26
27 /* Copy access control lists from one file to another. If SOURCE_DESC is
28 a valid file descriptor, use file descriptor operations, else use
29 filename based operations on SRC_NAME. Likewise for DEST_DESC and
30 DST_NAME.
31 If access control lists are not available, fchmod the target file to
32 MODE. Also sets the non-permission bits of the destination file
33 (S_ISUID, S_ISGID, S_ISVTX) to those from MODE if any are set.
34 Return 0 if successful.
35 Return -2 and set errno for an error relating to the source file.
36 Return -1 and set errno for an error relating to the destination file. */
37
38 int
39 qcopy_acl (const char *src_name, int source_desc, const char *dst_name,
40 int dest_desc, mode_t mode)
41 {
42 struct permission_context ctx;
43 int ret;
44
45 ret = get_permissions (src_name, source_desc, mode, &ctx);
46 if (ret != 0)
47 return -2;
48 ret = set_permissions (&ctx, dst_name, dest_desc);
49 free_permission_context (&ctx);
50 return ret;
51 }