58 lines
2.9 KiB
C
58 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 2020 Justine Alexandra Roberts Tunney │
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│ │
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│ This program is free software; you can redistribute it and/or modify │
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│ it under the terms of the GNU General Public License as published by │
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│ the Free Software Foundation; version 2 of the License. │
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│ │
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│ This program is distributed in the hope that it will be useful, but │
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│ WITHOUT ANY WARRANTY; without even the implied warranty of │
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│ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU │
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│ General Public License for more details. │
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│ │
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│ You should have received a copy of the GNU General Public License │
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│ along with this program; if not, write to the Free Software │
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│ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA │
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│ 02110-1301 USA │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/calls/calls.h"
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#include "libc/calls/internal.h"
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#include "libc/nt/createfile.h"
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#include "libc/nt/enum/accessmask.h"
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#include "libc/nt/enum/creationdisposition.h"
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#include "libc/nt/enum/filesharemode.h"
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#include "libc/nt/files.h"
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#include "libc/nt/runtime.h"
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#include "libc/sysv/consts/ok.h"
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/**
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* Flushes all open file handles and, if possible, all disk drives.
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*/
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int sync$nt(void) {
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unsigned i;
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int64_t volume;
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uint32_t drives;
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char16_t path[] = u"\\\\.\\C:";
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for (i = 0; i < g_fds.n; ++i) {
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if (g_fds.p[i].kind == kFdFile) {
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FlushFileBuffers(g_fds.p[i].handle);
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}
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}
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for (drives = GetLogicalDrives(), i = 0; i <= 'Z' - 'A'; ++i) {
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if (!(drives & (1 << i))) continue;
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path[4] = 'A' + i;
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if (ntaccesscheck(path, R_OK | W_OK) != -1) {
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if ((volume = CreateFile(
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path, kNtFileReadAttributes,
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kNtFileShareRead | kNtFileShareWrite | kNtFileShareDelete, 0,
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kNtOpenExisting, 0, 0)) != -1) {
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FlushFileBuffers(volume);
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CloseHandle(volume);
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}
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}
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}
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return 0;
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}
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