This is a maintenance fork
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/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
╞══════════════════════════════════════════════════════════════════════════════╡
│ Copyright 2020 Justine Alexandra Roberts Tunney │
│ │
│ This program is free software; you can redistribute it and/or modify │
│ it under the terms of the GNU General Public License as published by │
│ the Free Software Foundation; version 2 of the License. │
│ │
│ This program is distributed in the hope that it will be useful, but │
│ WITHOUT ANY WARRANTY; without even the implied warranty of │
│ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU │
│ General Public License for more details. │
│ │
│ You should have received a copy of the GNU General Public License │
│ along with this program; if not, write to the Free Software │
│ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA │
│ 02110-1301 USA │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/bits/xchg.h"
#include "libc/calls/calls.h"
#include "libc/calls/hefty/internal.h"
#include "libc/calls/hefty/ntspawn.h"
#include "libc/calls/hefty/spawn.h"
#include "libc/calls/internal.h"
#include "libc/nt/enum/startf.h"
#include "libc/nt/files.h"
#include "libc/nt/ipc.h"
#include "libc/nt/process.h"
#include "libc/nt/runtime.h"
#include "libc/nt/startupinfo.h"
#include "libc/nt/struct/processinformation.h"
#include "libc/str/str.h"
#include "libc/sysv/consts/fileno.h"
#include "libc/sysv/consts/o.h"
textwindows int spawnve$nt(unsigned flags, int stdiofds[3], const char *program,
char *const argv[], char *const envp[]) {
int pid;
size_t i;
int tubes[3];
int64_t handle, h, *x, *y;
struct NtStartupInfo sti;
struct NtProcessInformation procinfo;
handle = 0;
memset(&sti, 0, sizeof(sti));
sti.cb = sizeof(sti);
sti.dwFlags = kNtStartfUsestdhandles;
if ((pid = createfd()) == -1) return -1;
for (i = 0; i < 3; ++i) {
if (stdiofds[i] == -1) {
x = &h;
y = &sti.stdiofds[i];
if (kIoMotion[i]) xchg(&x, &y);
if ((tubes[i] = createfd()) != -1 &&
CreatePipe(x, y, &kNtIsInheritable, 0)) {
g_fds.p[tubes[i]].handle = h;
} else {
handle = -1;
}
} else {
sti.stdiofds[i] = g_fds.p[stdiofds[i]].handle;
}
}
if (handle != -1 &&
ntspawn(program, argv, envp, &kNtIsInheritable, NULL,
(flags & SPAWN_TABULARASA) ? false : true,
(flags & SPAWN_DETACH)
? (kNtCreateNewProcessGroup | kNtDetachedProcess |
kNtCreateBreakawayFromJob)
: 0,
NULL, &sti, &procinfo) != -1) {
CloseHandle(procinfo.hThread);
handle = procinfo.hProcess;
}
for (i = 0; i < 3; ++i) {
if (stdiofds[i] == -1) {
if (handle != -1) {
stdiofds[i] = tubes[i];
g_fds.p[tubes[i]].kind = kFdFile;
g_fds.p[tubes[i]].flags = 0;
CloseHandle(sti.stdiofds[i]);
} else {
CloseHandle(tubes[i]);
}
}
}
g_fds.p[pid].kind = kFdProcess;
g_fds.p[pid].handle = handle;
g_fds.p[pid].flags = flags;
return pid;
}