mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-01-31 19:43:32 +00:00
997ce29ddc
- SQLite file locking now works on Windows - SQLite will now use fdatasync() on non-Apple platforms - Fix Ctrl-C handler on Windows to not crash with TLS - Signals now work in multithreaded apps on Windows - fcntl() will now accurately report EINVAL errors - fcntl() now has excellent --strace logging - Token bucket replenish now go 100x faster - *NSYNC cancellations now work on Windows - Support closefrom() on NetBSD
48 lines
2.9 KiB
C
48 lines
2.9 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/syscall_support-nt.internal.h"
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#include "libc/errno.h"
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#include "libc/intrin/describeflags.internal.h"
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#include "libc/intrin/describentoverlapped.internal.h"
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#include "libc/intrin/strace.internal.h"
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#include "libc/nt/files.h"
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#include "libc/str/str.h"
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__msabi extern typeof(UnlockFileEx) *const __imp_UnlockFileEx;
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/**
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* Unlocks file on the New Technology.
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*
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* @return handle, or -1 on failure
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* @note this wrapper takes care of ABI, STRACE(), and __winerr()
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*/
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bool32 UnlockFileEx(int64_t hFile, uint32_t dwReserved,
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uint32_t nNumberOfBytesToUnlockLow,
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uint32_t nNumberOfBytesToUnlockHigh,
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struct NtOverlapped *lpOverlapped) {
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bool32 ok;
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ok = __imp_UnlockFileEx(hFile, dwReserved, nNumberOfBytesToUnlockLow,
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nNumberOfBytesToUnlockHigh, lpOverlapped);
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if (!ok) __winerr();
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NTTRACE(
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"UnlockFileEx(%ld, %#x, %'zu, [%s]) → %hhhd% m", hFile, dwReserved,
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(uint64_t)nNumberOfBytesToUnlockHigh << 32 | nNumberOfBytesToUnlockLow,
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DescribeNtOverlapped(lpOverlapped), ok);
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return ok;
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}
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