mirror of
https://github.com/jart/cosmopolitan.git
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fbc053e018
- Introduce __assert_disable global - Improve strsignal() thread safety - Make system call tracing thread safe - Fix SO_RCVTIMEO / SO_SNDTIMEO on Windows - Refactor DescribeFoo() functions into one place - Fix fork() on Windows when TLS and MAP_STACK exist - Round upwards in setsockopt(SO_RCVTIMEO) on Windows - Disable futexes on OpenBSD which seem extremely broken - Implement a better kludge for monotonic time on Windows
42 lines
2.7 KiB
C
42 lines
2.7 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2022 Justine Alexandra Roberts Tunney │
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│ │
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│ Permission to use, copy, modify, and/or distribute this software for │
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│ any purpose with or without fee is hereby granted, provided that the │
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│ above copyright notice and this permission notice appear in all copies. │
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│ │
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│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
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│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
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│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
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│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
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│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
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│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
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│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
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│ PERFORMANCE OF THIS SOFTWARE. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/calls/strace.internal.h"
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#include "libc/calls/syscall_support-nt.internal.h"
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#include "libc/intrin/describeflags.internal.h"
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#include "libc/log/libfatal.internal.h"
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#include "libc/nt/memory.h"
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__msabi extern typeof(VirtualProtect) *const __imp_VirtualProtect;
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/**
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* Protects memory on the New Technology.
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* @note this wrapper takes care of ABI, STRACE(), and __winerr()
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*/
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textwindows bool32 VirtualProtect(void *lpAddress, uint64_t dwSize,
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uint32_t flNewProtect,
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uint32_t *lpflOldProtect) {
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bool32 bOk;
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char oldbuf[64];
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bOk = __imp_VirtualProtect(lpAddress, dwSize, flNewProtect, lpflOldProtect);
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if (!bOk) __winerr();
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NTTRACE("VirtualProtect(%p, %'zu, %s, [%s]) → %hhhd% m", lpAddress, dwSize,
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DescribeNtPageFlags(flNewProtect),
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DescribeNtPageFlags(*lpflOldProtect), bOk);
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return bOk;
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}
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