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https://github.com/jart/cosmopolitan.git
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29bf8b1a30
- Make rand64() thread safe - Introduce lemur64 lcg prng - Improve strace on New Technology - Improve msync() on New Technology
42 lines
2.6 KiB
C
42 lines
2.6 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 2020 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/nt/enum/filemapflags.h"
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#include "libc/nt/enum/pageflags.h"
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#include "libc/runtime/directmap.internal.h"
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#include "libc/sysv/consts/prot.h"
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privileged struct ProtectNt __nt2prot(int prot) {
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if (prot & PROT_WRITE) {
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if (prot & PROT_EXEC) {
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return (struct ProtectNt){kNtPageExecuteReadwrite,
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kNtFileMapWrite | kNtFileMapExecute};
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} else {
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return (struct ProtectNt){kNtPageReadwrite, kNtFileMapWrite};
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}
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} else if (prot & PROT_READ) {
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if (prot & PROT_EXEC) {
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return (struct ProtectNt){kNtPageExecuteRead,
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kNtFileMapRead | kNtFileMapExecute};
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} else {
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return (struct ProtectNt){kNtPageReadonly, kNtFileMapRead};
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}
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} else {
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return (struct ProtectNt){kNtPageNoaccess};
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}
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}
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