99 lines
4.0 KiB
C
99 lines
4.0 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/bits/xchg.h"
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#include "libc/calls/calls.h"
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#include "libc/calls/hefty/internal.h"
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#include "libc/calls/hefty/ntspawn.h"
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#include "libc/calls/hefty/spawn.h"
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#include "libc/calls/internal.h"
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#include "libc/nt/enum/startf.h"
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#include "libc/nt/files.h"
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#include "libc/nt/ipc.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/startupinfo.h"
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#include "libc/nt/struct/processinformation.h"
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#include "libc/str/str.h"
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#include "libc/sysv/consts/fileno.h"
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#include "libc/sysv/consts/o.h"
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textwindows int spawnve$nt(unsigned flags, int stdiofds[3], const char *program,
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char *const argv[], char *const envp[]) {
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int pid;
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size_t i;
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int tubes[3];
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int64_t handle, h, *x, *y;
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struct NtStartupInfo sti;
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struct NtProcessInformation procinfo;
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handle = 0;
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memset(&sti, 0, sizeof(sti));
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sti.cb = sizeof(sti);
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sti.dwFlags = kNtStartfUsestdhandles;
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if ((pid = createfd()) == -1) return -1;
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for (i = 0; i < 3; ++i) {
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if (stdiofds[i] == -1) {
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x = &h;
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y = &sti.stdiofds[i];
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if (kIoMotion[i]) xchg(&x, &y);
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if ((tubes[i] = createfd()) != -1 &&
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CreatePipe(x, y, &kNtIsInheritable, 0)) {
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g_fds.p[tubes[i]].handle = h;
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} else {
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handle = -1;
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}
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} else {
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sti.stdiofds[i] = g_fds.p[stdiofds[i]].handle;
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}
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}
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if (handle != -1 &&
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ntspawn(program, argv, envp, NULL, NULL,
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(flags & SPAWN_TABULARASA) ? false : true,
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(flags & SPAWN_DETACH)
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? (kNtCreateNewProcessGroup | kNtDetachedProcess |
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kNtCreateBreakawayFromJob)
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: 0,
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NULL, &sti, &procinfo) != -1) {
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CloseHandle(procinfo.hThread);
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handle = procinfo.hProcess;
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}
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for (i = 0; i < 3; ++i) {
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if (stdiofds[i] == -1) {
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if (handle != -1) {
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stdiofds[i] = tubes[i];
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g_fds.p[tubes[i]].kind = kFdFile;
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g_fds.p[tubes[i]].flags = O_CLOEXEC;
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CloseHandle(sti.stdiofds[i]);
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} else {
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CloseHandle(tubes[i]);
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}
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}
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}
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g_fds.p[pid].kind = kFdProcess;
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g_fds.p[pid].handle = handle;
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g_fds.p[pid].flags = flags;
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return pid;
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}
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