54 lines
2.9 KiB
C
54 lines
2.9 KiB
C
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/*-*- 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/dce.h"
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#include "libc/nt/nt/process.h"
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#include "libc/nt/ntdll.h"
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#include "libc/nt/process.h"
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#include "libc/nt/runtime.h"
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#include "libc/nt/struct/processbasicinformation.h"
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static textwindows noinline int32_t getppid$nt(void) {
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struct NtProcessBasicInformation ProcessInformation;
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uint32_t gotsize = 0;
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if (!NtError(
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NtQueryInformationProcess(GetCurrentProcess(), 0, &ProcessInformation,
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sizeof(ProcessInformation), &gotsize)) &&
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gotsize >= sizeof(ProcessInformation) &&
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ProcessInformation.InheritedFromUniqueProcessId) {
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/* TODO(jart): Fix type mismatch and do we need to close this? */
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return ProcessInformation.InheritedFromUniqueProcessId;
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}
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return GetCurrentProcessId();
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}
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/**
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* Returns parent process id.
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* @asyncsignalsafe
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*/
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int32_t getppid(void) {
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if (!IsWindows()) {
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return getppid$sysv();
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} else {
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return getppid$nt();
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}
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}
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