From f7cc6b4dcc164403d62c9b48ae37f1c4c20f4b4f Mon Sep 17 00:00:00 2001 From: Michael Smith Date: Thu, 30 Dec 2021 16:18:25 +0000 Subject: Split up os.h, inline functions and fix some typos --- src/os.c | 56 -------------------------------------------------------- 1 file changed, 56 deletions(-) delete mode 100644 src/os.c (limited to 'src/os.c') diff --git a/src/os.c b/src/os.c deleted file mode 100644 index 96e3c48..0000000 --- a/src/os.c +++ /dev/null @@ -1,56 +0,0 @@ -/* - * Copyright © 2021 Michael Smith - * - * Permission to use, copy, modify, and/or distribute this software for any - * purpose with or without fee is hereby granted, provided that the above - * copyright notice and this permission notice appear in all copies. - * - * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH - * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY - * AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, - * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM - * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR - * OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR - * PERFORMANCE OF THIS SOFTWARE. - */ - -#include - -#include "intdefs.h" -#include "os.h" - -#ifdef _WIN32 -// SystemFunction036 is the *real* name of "RtlGenRandom," and is also -// incorrectly defined in system headers. Yay, Windows. -int __stdcall SystemFunction036(void *buf, ulong sz); -#endif - -bool os_mprot(void *addr, int len, int fl) { -#ifdef _WIN32 - ulong old; - return !!VirtualProtect(addr, len, fl, &old); -#else - // round down address and round up size - addr = (void *)((ulong)addr & ~(4095)); - len = len + 4095 & ~(4095); - return mprotect(addr, len, fl) != -1; -#endif -} - -#ifdef _WIN32 -void *os_dlsym(void *m, const char *s) { - return (void *)GetProcAddress(m, s); -} -#endif - -void os_randombytes(void *buf, int sz) { - // if these calls ever fail, the system is fundamentally broken with no - // recourse, so just loop until success. hopefully nothing will go wrong. -#ifdef _WIN32 - while (!SystemFunction036(buf, sz)); -#else - while (getentropy(buf, sz) == -1); -#endif -} - -// vi: sw=4 ts=4 noet tw=80 cc=80 -- cgit v1.2.3