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53 lines
3.1 KiB
C
53 lines
3.1 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│ vi: set et 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/syscall_support-nt.internal.h"
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#include "libc/intrin/describeflags.h"
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#include "libc/intrin/strace.h"
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#include "libc/nt/memory.h"
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#include "libc/nt/struct/securityattributes.h"
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#include "libc/nt/thunk/msabi.h"
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__msabi extern typeof(CreateFileMapping) *const __imp_CreateFileMappingW;
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/**
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* Creates file mapping object on the New Technology.
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*
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* @param opt_hFile may be -1 for MAP_ANONYMOUS behavior
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* @return handle, or 0 on failure
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* @note this wrapper takes care of ABI, STRACE(), and __winerr()
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* @see MapViewOfFileEx()
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*/
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textwindows int64_t CreateFileMapping(
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int64_t opt_hFile,
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const struct NtSecurityAttributes *opt_lpFileMappingAttributes,
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uint32_t flProtect, uint32_t dwMaximumSizeHigh, uint32_t dwMaximumSizeLow,
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const char16_t *opt_lpName) {
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int64_t hHandle;
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hHandle = __imp_CreateFileMappingW(opt_hFile, opt_lpFileMappingAttributes,
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flProtect, dwMaximumSizeHigh,
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dwMaximumSizeLow, opt_lpName);
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if (!hHandle)
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__winerr();
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NTTRACE("CreateFileMapping(%ld, %s, %s, %'zu, %#hs) → %ld% m", opt_hFile,
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DescribeNtSecurityAttributes(opt_lpFileMappingAttributes),
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DescribeNtPageFlags(flProtect),
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(uint64_t)dwMaximumSizeHigh << 32 | dwMaximumSizeLow, opt_lpName,
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hHandle);
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return hHandle;
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}
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