53 lines
2.8 KiB
C
53 lines
2.8 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/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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