1 /* 2 * Copyright (c) 2008-2014 Travis Geiselbrecht 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining 5 * a copy of this software and associated documentation files 6 * (the "Software"), to deal in the Software without restriction, 7 * including without limitation the rights to use, copy, modify, merge, 8 * publish, distribute, sublicense, and/or sell copies of the Software, 9 * and to permit persons to whom the Software is furnished to do so, 10 * subject to the following conditions: 11 * 12 * The above copyright notice and this permission notice shall be 13 * included in all copies or substantial portions of the Software. 14 * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 16 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 18 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY 19 * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, 20 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE 21 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 22 */ 23 #ifndef __RAND_H 24 #define __RAND_H 25 26 #include <lk/compiler.h> 27 #include <sys/types.h> 28 29 __BEGIN_CDECLS; 30 31 int rand(void); 32 void srand(unsigned int seed); 33 34 /* non standard extension to add some entropy to the seed */ 35 void libc_trusty_rand_add_entropy(const void *buf, size_t len); 36 37 __END_CDECLS; 38 39 #endif 40 41