/* $NetBSD: fsaccess.c,v 1.1.4.2 2024/02/29 11:39:10 martin Exp $ */ /* * Copyright (C) Internet Systems Consortium, Inc. ("ISC") * * SPDX-License-Identifier: MPL-2.0 * * This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, you can obtain one at https://mozilla.org/MPL/2.0/. * * See the COPYRIGHT file distributed with this work for additional * information regarding copyright ownership. */ #include #include #include #include #include "errno2result.h" /*! \file * \brief * The OS-independent part of the API is in lib/isc. */ #include "../fsaccess.c" isc_result_t isc_fsaccess_set(const char *path, isc_fsaccess_t access) { struct stat statb; mode_t mode; bool is_dir = false; isc_fsaccess_t bits; isc_result_t result; if (stat(path, &statb) != 0) { return (isc__errno2result(errno)); } if ((statb.st_mode & S_IFDIR) != 0) { is_dir = true; } else if ((statb.st_mode & S_IFREG) == 0) { return (ISC_R_INVALIDFILE); } result = check_bad_bits(access, is_dir); if (result != ISC_R_SUCCESS) { return (result); } /* * Done with checking bad bits. Set mode_t. */ mode = 0; #define SET_AND_CLEAR1(modebit) \ if ((access & bits) != 0) { \ mode |= modebit; \ access &= ~bits; \ } #define SET_AND_CLEAR(user, group, other) \ SET_AND_CLEAR1(user); \ bits <<= STEP; \ SET_AND_CLEAR1(group); \ bits <<= STEP; \ SET_AND_CLEAR1(other); bits = ISC_FSACCESS_READ | ISC_FSACCESS_LISTDIRECTORY; SET_AND_CLEAR(S_IRUSR, S_IRGRP, S_IROTH); bits = ISC_FSACCESS_WRITE | ISC_FSACCESS_CREATECHILD | ISC_FSACCESS_DELETECHILD; SET_AND_CLEAR(S_IWUSR, S_IWGRP, S_IWOTH); bits = ISC_FSACCESS_EXECUTE | ISC_FSACCESS_ACCESSCHILD; SET_AND_CLEAR(S_IXUSR, S_IXGRP, S_IXOTH); INSIST(access == 0); if (chmod(path, mode) < 0) { return (isc__errno2result(errno)); } return (ISC_R_SUCCESS); }