1 /* $NetBSD: util.h,v 1.5 2024/02/21 22:51:27 christos Exp $ */ 2 3 /* 4 * Copyright (C) Internet Systems Consortium, Inc. ("ISC") 5 * 6 * SPDX-License-Identifier: MPL-2.0 AND ISC 7 * 8 * This Source Code Form is subject to the terms of the Mozilla Public 9 * License, v. 2.0. If a copy of the MPL was not distributed with this 10 * file, you can obtain one at https://mozilla.org/MPL/2.0/. 11 * 12 * See the COPYRIGHT file distributed with this work for additional 13 * information regarding copyright ownership. 14 */ 15 16 /* 17 * Copyright (C) Red Hat 18 * 19 * Permission to use, copy, modify, and/or distribute this software for any 20 * purpose with or without fee is hereby granted, provided that the above 21 * copyright notice and this permission notice appear in all copies. 22 * 23 * THE SOFTWARE IS PROVIDED "AS IS" AND AUTHORS DISCLAIMS ALL WARRANTIES WITH 24 * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY 25 * AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT, 26 * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM 27 * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE 28 * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR 29 * PERFORMANCE OF THIS SOFTWARE. 30 */ 31 32 /* 33 * Memory allocation and error handling utilities. 34 */ 35 36 #pragma once 37 38 #include <isc/mem.h> 39 40 #include <dns/types.h> 41 42 #include "log.h" 43 44 #define CLEANUP_WITH(result_code) \ 45 do { \ 46 result = (result_code); \ 47 goto cleanup; \ 48 } while (0) 49 50 #define CHECK(op) \ 51 do { \ 52 result = (op); \ 53 if (result != ISC_R_SUCCESS) \ 54 goto cleanup; \ 55 } while (0) 56 57 #define CHECKED_MEM_GET(m, target_ptr, s) \ 58 do { \ 59 (target_ptr) = isc_mem_get((m), (s)); \ 60 if ((target_ptr) == NULL) { \ 61 result = ISC_R_NOMEMORY; \ 62 log_error("Memory allocation failed"); \ 63 goto cleanup; \ 64 } \ 65 } while (0) 66 67 #define CHECKED_MEM_GET_PTR(m, target_ptr) \ 68 CHECKED_MEM_GET(m, target_ptr, sizeof(*(target_ptr))) 69 70 #define CHECKED_MEM_STRDUP(m, source, target) \ 71 do { \ 72 (target) = isc_mem_strdup((m), (source)); \ 73 if ((target) == NULL) { \ 74 result = ISC_R_NOMEMORY; \ 75 log_error("Memory allocation failed"); \ 76 goto cleanup; \ 77 } \ 78 } while (0) 79 80 #define ZERO_PTR(ptr) memset((ptr), 0, sizeof(*(ptr))) 81 82 #define MEM_PUT_AND_DETACH(target_ptr) \ 83 isc_mem_putanddetach(&(target_ptr)->mctx, target_ptr, \ 84 sizeof(*(target_ptr))) 85