91 lines
4.6 KiB
C
91 lines
4.6 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/alg/alg.h"
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#include "libc/alg/arraylist.h"
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#include "libc/bits/bits.h"
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#include "libc/bits/safemacros.h"
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#include "libc/calls/calls.h"
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#include "libc/calls/hefty/ntspawn.h"
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#include "libc/calls/internal.h"
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#include "libc/conv/conv.h"
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#include "libc/nt/enum/processcreationflags.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/runtime/missioncritical.h"
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#include "libc/runtime/runtime.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/errfuns.h"
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/**
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* Spawns process on Windows NT.
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*
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* This function delegates to CreateProcess() with UTF-8 → UTF-16
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* translation and argv escaping. Please note this will NOT escape
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* command interpreter syntax.
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*
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* @param program will not be PATH searched, see commandv()
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* @param argv[0] is the name of the program to run
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* @param argv[1,n-2] optionally specifies program arguments
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* @param argv[n-1] is NULL
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* @param envp[𝟶,m-2] specifies "foo=bar" environment variables, which
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* don't need to be passed in sorted order; however, this function
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* goes faster the closer they are to sorted
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* @param envp[m-1] is NULL
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* @param bInheritHandles means handles already marked inheritable will
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* be inherited; which, assuming the System V wrapper functions are
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* being used, should mean (1) all files and sockets that weren't
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* opened with O_CLOEXEC; and (2) all memory mappings
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* @param opt_out_lpProcessInformation can be used to return process and
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* thread IDs to parent, as well as open handles that need close()
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* @return 0 on success, or -1 w/ errno
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* @see spawnve() which abstracts this function
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*/
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textwindows int ntspawn(
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const char *program, char *const argv[], char *const envp[],
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struct NtSecurityAttributes *opt_lpProcessAttributes,
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struct NtSecurityAttributes *opt_lpThreadAttributes, bool32 bInheritHandles,
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uint32_t dwCreationFlags, const char16_t *opt_lpCurrentDirectory,
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/*nodiscard*/ const struct NtStartupInfo *lpStartupInfo,
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struct NtProcessInformation *opt_out_lpProcessInformation) {
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int rc;
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char16_t program16[PATH_MAX], *lpCommandLine, *lpEnvironment;
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lpCommandLine = NULL;
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lpEnvironment = NULL;
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if (mkntpath(program, program16) != -1 &&
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(lpCommandLine = mkntcmdline(argv)) &&
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(lpEnvironment = mkntenvblock(envp))) {
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if (CreateProcess(program16, lpCommandLine, opt_lpProcessAttributes,
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opt_lpThreadAttributes, bInheritHandles,
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dwCreationFlags | kNtCreateUnicodeEnvironment,
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lpEnvironment, opt_lpCurrentDirectory, lpStartupInfo,
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opt_out_lpProcessInformation)) {
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rc = 0;
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} else {
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rc = winerr();
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}
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} else {
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rc = -1;
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}
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free(lpCommandLine);
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free(lpEnvironment);
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return rc;
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}
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