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 * $FreeBSD$ 37 */ 38 #pragma once 39 40 #ifndef __USE_POSIX2 41 /* Ensure that unistd.h pulls in getopt */ 42 #define __USE_POSIX2 43 #endif 44 /* 45 * Before version 2.25, glibc's unistd.h would define the POSIX subset of 46 * getopt.h by defining __need_getopt, including getopt.h (which would 47 * disable the header guard) and then undefining it so later including 48 * getopt.h explicitly would define the extensions. However, we wrap getopt, 49 * and so the wrapper's #pragma once breaks that. Thus getopt.h must be 50 * included before the real unistd.h to ensure we get all the extensions. 51 */ 52 #include <getopt.h> 53 #include_next <unistd.h> 54 #include <fcntl.h> 55 #include <stdlib.h> 56 #include <string.h> 57 #include <sys/syscall.h> 58 59 #ifndef required_argument 60 #error "something went wrong including getopt" 61 #endif 62 63 __BEGIN_DECLS 64 65 #ifdef __GLIBC__ 66 static inline int 67 issetugid(void) 68 { 69 return (0); 70 } 71 #endif 72 73 char *fflagstostr(unsigned long flags); 74 int strtofflags(char **stringp, u_long *setp, u_long *clrp); 75 76 /* 77 * getentropy() was added in glibc 2.25. Declare it for !glibc and older 78 * versions. 79 */ 80 #if defined(__GLIBC__) && !__GLIBC_PREREQ(2, 25) 81 static inline int 82 getentropy(void *buf, size_t buflen) 83 { 84 return (syscall(__NR_getrandom, buf, buflen, 0)); 85 } 86 #endif 87 88 void *setmode(const char *); 89 mode_t getmode(const void *, mode_t); 90 91 __END_DECLS 92