1 /* Copy access control list from one file to another. -*- coding: utf-8 -*- 2 3 Copyright (C) 2002-2003, 2005-2021 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 }