1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright 2018-2020 Alex Richardson <arichardson@FreeBSD.org> 5 * 6 * This software was developed by SRI International and the University of 7 * Cambridge Computer Laboratory (Department of Computer Science and 8 * Technology) under DARPA contract HR0011-18-C-0016 ("ECATS"), as part of the 9 * DARPA SSITH research programme. 10 * 11 * This software was developed by SRI International and the University of 12 * Cambridge Computer Laboratory under DARPA/AFRL contract (FA8750-10-C-0237) 13 * ("CTSRD"), as part of the DARPA CRASH research programme. 14 * 15 * Redistribution and use in source and binary forms, with or without 16 * modification, are permitted provided that the following conditions 17 * are met: 18 * 1. Redistributions of source code must retain the above copyright 19 * notice, this list of conditions and the following disclaimer. 20 * 2. Redistributions in binary form must reproduce the above copyright 21 * notice, this list of conditions and the following disclaimer in the 22 * documentation and/or other materials provided with the distribution. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 */ 36 #if __has_include_next(<limits.h>) 37 #include_next <limits.h> 38 #endif 39 40 #if __has_include(<linux/limits.h>) 41 #include <linux/limits.h> 42 #endif 43 44 #if !defined(__STDC_VERSION__) || __STDC_VERSION__ < 199901L 45 #if !defined(_GNU_SOURCE) 46 #warning "Attempting to use limits.h with -std=c89/without _GNU_SOURCE, many macros will be missing" 47 #endif 48 49 #else /* Not C89 */ 50 /* Not C89 -> check that all macros that we expect are defined */ 51 #ifndef IOV_MAX 52 #error IOV_MAX should be defined 53 #endif 54 #endif /* C89 */ 55 56 #ifndef MAXBSIZE 57 #define MAXBSIZE 65536 /* must be power of 2 */ 58 #endif 59 60 #ifndef OFF_MAX 61 #define OFF_MAX UINT64_MAX 62 #endif 63 64 #ifndef QUAD_MAX 65 #define QUAD_MAX INT64_MAX 66 #endif 67 68 #ifndef GID_MAX 69 #define GID_MAX ((gid_t)-1) 70 #endif 71 72 #ifndef UID_MAX 73 #define UID_MAX ((uid_t)-1) 74 #endif 75 76 #ifdef __GLIBC__ 77 #ifndef _LIBC_LIMITS_H_ 78 #error "DIDN't include correct limits?" 79 #endif 80 81 #ifndef __USE_XOPEN 82 #warning __USE_XOPEN should be defined (did you forget to set _GNU_SOURCE?) 83 #endif 84 85 #include <sys/types.h> 86 #include <sys/uio.h> /* For IOV_MAX */ 87 88 /* Sanity checks for glibc */ 89 #ifndef _GNU_SOURCE 90 #error _GNU_SOURCE not defined 91 #endif 92 93 #ifndef __USE_POSIX 94 #warning __USE_POSIX not defined 95 #endif 96 97 #if defined __GNUC__ && !defined _GCC_LIMITS_H_ 98 #error "GCC limits not included" 99 #endif 100 101 #ifndef __OFF_T_MATCHES_OFF64_T 102 #error "Expected 64-bit off_t" 103 #endif 104 105 #ifndef _POSIX_PATH_MAX 106 #define _POSIX_PATH_MAX PATH_MAX 107 #endif 108 #endif 109