1 /* 2 __ __ _ 3 ___\ \/ /_ __ __ _| |_ 4 / _ \\ /| '_ \ / _` | __| 5 | __// \| |_) | (_| | |_ 6 \___/_/\_\ .__/ \__,_|\__| 7 |_| XML parser 8 9 Copyright (c) 2026 Sebastian Pipping <sebastian@pipping.org> 10 Copyright (c) 2026 Matthew Fernandez <matthew.fernandez@gmail.com> 11 Licensed under the MIT license: 12 13 Permission is hereby granted, free of charge, to any person obtaining 14 a copy of this software and associated documentation files (the 15 "Software"), to deal in the Software without restriction, including 16 without limitation the rights to use, copy, modify, merge, publish, 17 distribute, sublicense, and/or sell copies of the Software, and to permit 18 persons to whom the Software is furnished to do so, subject to the 19 following conditions: 20 21 The above copyright notice and this permission notice shall be included 22 in all copies or substantial portions of the Software. 23 24 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 25 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 26 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN 27 NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 28 DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR 29 OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE 30 USE OR OTHER DEALINGS IN THE SOFTWARE. 31 32 SPDX-License-Identifier: MIT 33 */ 34 35 #include "random_getentropy.h" 36 37 // NOTE: Please keep this block in sync with its two siblings in files 38 // `configure.ac` and `ConfigureChecks.cmake`! 39 #if defined(__APPLE__) 40 # include <sys/random.h> 41 #else 42 # if defined(__GLIBC__) && ! defined(_DEFAULT_SOURCE) 43 # define _DEFAULT_SOURCE 1 44 # endif 45 # if ! defined(_GNU_SOURCE) 46 # define _GNU_SOURCE 1 /* for musl */ 47 # endif 48 # include <unistd.h> 49 #endif // ! defined(__APPLE__) 50 51 #include "memory_sanitizer.h" 52 #include <errno.h> 53 54 bool 55 writeRandomBytes_getentropy(void *target, size_t count) { 56 errno = 0; 57 const bool success = (getentropy(target, count) == 0); 58 // MSan does not understand `getentropy`, so explain its effects 59 if (success) 60 MSAN_UNPOISON(target, count); 61 return success; 62 } 63