| 1 | /* $Id: winchildren.c 3313 2020-03-16 02:31:38Z bird $ */
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| 2 | /** @file
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| 3 | * Child process creation and management for kmk.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (c) 2018 knut st. osmundsen <[email protected]>
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| 8 | *
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| 9 | * This file is part of kBuild.
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| 10 | *
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| 11 | * kBuild is free software; you can redistribute it and/or modify
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| 12 | * it under the terms of the GNU General Public License as published by
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| 13 | * the Free Software Foundation; either version 3 of the License, or
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| 14 | * (at your option) any later version.
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| 15 | *
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| 16 | * kBuild is distributed in the hope that it will be useful,
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| 17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 19 | * GNU General Public License for more details.
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| 20 | *
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| 21 | * You should have received a copy of the GNU General Public License
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| 22 | * along with kBuild. If not, see <http://www.gnu.org/licenses/>
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| 23 | *
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| 24 | */
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| 25 |
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| 26 | /* No GNU coding style here atm, convert if upstreamed. */
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| 27 |
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| 28 | /** @page pg_win_children Windows child process creation and managment
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| 29 | *
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| 30 | * This new implementation aims at addressing the following:
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| 31 | *
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| 32 | * 1. Speed up process creation by doing the expensive CreateProcess call
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| 33 | * in a worker thread.
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| 34 | *
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| 35 | * 2. No 64 process limit imposed by WaitForMultipleObjects.
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| 36 | *
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| 37 | * 3. Better distribute jobs among processor groups.
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| 38 | *
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| 39 | * 4. Offloading more expensive kmkbuiltin operations to worker threads,
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| 40 | * making the main thread focus on managing child processes.
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| 41 | *
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| 42 | * 5. Output synchronization using reusable pipes.
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| 43 | *
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| 44 | *
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| 45 | * To be quite honest, the first item (CreateProcess expense) didn't occur to me
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| 46 | * at first and was more of a sideeffect discovered along the way. A test
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| 47 | * rebuilding IPRT went from 4m52s to 3m19s on a 8 thread system.
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| 48 | *
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| 49 | * The 2nd and 3rd goals are related to newer build servers that have lots of
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| 50 | * CPU threads and various Windows NT (aka NT OS/2 at the time) design choices
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| 51 | * made in the late 1980ies.
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| 52 | *
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| 53 | * WaitForMultipleObjects does not support waiting for more than 64 objects,
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| 54 | * unlike poll and select. This is just something everyone ends up having to
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| 55 | * work around in the end.
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| 56 | *
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| 57 | * Affinity masks are uintptr_t sized, so 64-bit hosts can only manage 64
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| 58 | * processors and 32-bit only 32. Workaround was introduced with Windows 7
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| 59 | * (IIRC) and is called processor groups. The CPU threads are grouped into 1 or
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| 60 | * more groups of up to 64 processors. Processes are generally scheduled to a
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| 61 | * signle processor group at first, but threads may be changed to be scheduled
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| 62 | * on different groups. This code will try distribute children evenly among the
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| 63 | * processor groups, using a very simple algorithm (see details in code).
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| 64 | *
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| 65 | *
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| 66 | * @section sec_win_children_av Remarks on Microsoft Defender and other AV
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| 67 | *
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| 68 | * Part of the motivation for writing this code was horrible CPU utilization on
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| 69 | * a brand new AMD Threadripper 1950X system with lots of memory and SSDs,
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| 70 | * running 64-bit Windows 10 build 16299.
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| 71 | *
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| 72 | * Turns out Microsoft defender adds some overhead to CreateProcess
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| 73 | * and other stuff:
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| 74 | * - Old make with CreateProcess on main thread:
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| 75 | * - With runtime defender enabled: 14 min 6 seconds
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| 76 | * - With runtime defender disabled: 4 min 49 seconds
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| 77 | * - New make with CreateProcess on worker thread (this code):
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| 78 | * - With runtime defender enabled: 6 min 29 seconds
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| 79 | * - With runtime defender disabled: 4 min 36 seconds
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| 80 | * - With runtime defender disabled out dir only: 5 min 59 seconds
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| 81 | *
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| 82 | * See also kWorker / kSubmit for more bickering about AV & disk encryption.
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| 83 | */
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| 84 |
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| 85 |
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| 86 | /*********************************************************************************************************************************
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| 87 | * Header Files *
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| 88 | *********************************************************************************************************************************/
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| 89 | #include <Windows.h>
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| 90 | #include <Winternl.h>
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| 91 |
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| 92 | #include "../makeint.h"
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| 93 | #include "../job.h"
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| 94 | #include "../filedef.h"
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| 95 | #include "../debug.h"
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| 96 | #include "../kmkbuiltin.h"
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| 97 | #include "winchildren.h"
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| 98 |
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| 99 | #include <assert.h>
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| 100 | #include <process.h>
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| 101 | #include <intrin.h>
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| 102 |
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| 103 | #include "nt/nt_child_inject_standard_handles.h"
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| 104 | #include "console.h"
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| 105 |
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| 106 | #ifndef KMK_BUILTIN_STANDALONE
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| 107 | extern void kmk_cache_exec_image_w(const wchar_t *); /* imagecache.c */
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| 108 | #endif
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| 109 |
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| 110 |
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| 111 | /*********************************************************************************************************************************
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| 112 | * Defined Constants And Macros *
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| 113 | *********************************************************************************************************************************/
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| 114 | #define MKWINCHILD_MAX_PATH 1024
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| 115 |
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| 116 | #define MKWINCHILD_DO_SET_PROCESSOR_GROUP
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| 117 |
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| 118 | /** Checks the UTF-16 environment variable pointed to is the PATH. */
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| 119 | #define IS_PATH_ENV_VAR(a_cwcVar, a_pwszVar) \
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| 120 | ( (a_cwcVar) >= 5 \
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| 121 | && (a_pwszVar)[4] == L'=' \
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| 122 | && ((a_pwszVar)[0] == L'P' || (a_pwszVar)[0] == L'p') \
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| 123 | && ((a_pwszVar)[1] == L'A' || (a_pwszVar)[1] == L'a') \
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| 124 | && ((a_pwszVar)[2] == L'T' || (a_pwszVar)[2] == L't') \
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| 125 | && ((a_pwszVar)[3] == L'H' || (a_pwszVar)[3] == L'h') )
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| 126 |
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| 127 |
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| 128 | /*********************************************************************************************************************************
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| 129 | * Structures and Typedefs *
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| 130 | *********************************************************************************************************************************/
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| 131 | /** Pointer to a childcare worker thread. */
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| 132 | typedef struct WINCHILDCAREWORKER *PWINCHILDCAREWORKER;
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| 133 | /** Pointer to a windows child process. */
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| 134 | typedef struct WINCHILD *PWINCHILD;
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| 135 |
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| 136 |
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| 137 | /**
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| 138 | * Child process type.
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| 139 | */
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| 140 | typedef enum WINCHILDTYPE
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| 141 | {
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| 142 | WINCHILDTYPE_INVALID = 0,
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| 143 | /** Normal child process. */
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| 144 | WINCHILDTYPE_PROCESS,
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| 145 | #ifdef KMK
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| 146 | /** kmkbuiltin command. */
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| 147 | WINCHILDTYPE_BUILT_IN,
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| 148 | /** kmkbuiltin_append result write out. */
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| 149 | WINCHILDTYPE_APPEND,
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| 150 | /** kSubmit job. */
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| 151 | WINCHILDTYPE_SUBMIT,
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| 152 | /** kmk_redirect job. */
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| 153 | WINCHILDTYPE_REDIRECT,
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| 154 | #endif
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| 155 | /** End of valid child types. */
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| 156 | WINCHILDTYPE_END
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| 157 | } WINCHILDTYPE;
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| 158 |
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| 159 |
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| 160 | /**
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| 161 | * Windows child process.
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| 162 | */
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| 163 | typedef struct WINCHILD
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| 164 | {
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| 165 | /** Magic / eyecatcher (WINCHILD_MAGIC). */
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| 166 | ULONG uMagic;
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| 167 | /** Child type. */
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| 168 | WINCHILDTYPE enmType;
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| 169 | /** Pointer to the next child process. */
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| 170 | PWINCHILD pNext;
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| 171 | /** The pid for this child. */
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| 172 | pid_t pid;
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| 173 | /** The make child structure associated with this child. */
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| 174 | struct child *pMkChild;
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| 175 |
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| 176 | /** The process exit code. */
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| 177 | int iExitCode;
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| 178 | /** Kill signal, in case we or someone else killed it. */
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| 179 | int iSignal;
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| 180 | /** Set if core was dumped. */
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| 181 | int fCoreDumped;
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| 182 | /** Set if the a child process is a candidate for cl.exe where we supress
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| 183 | * annoying source name output. */
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| 184 | BOOL fProbableClExe;
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| 185 | /** The worker executing this child. */
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| 186 | PWINCHILDCAREWORKER pWorker;
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| 187 |
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| 188 | /** Type specific data. */
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| 189 | union
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| 190 | {
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| 191 | /** Data for WINCHILDTYPE_PROCESS. */
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| 192 | struct
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| 193 | {
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| 194 | /** Argument vector (single allocation, strings following array). */
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| 195 | char **papszArgs;
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| 196 | /** Length of the argument strings. */
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| 197 | size_t cbArgsStrings;
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| 198 | /** Environment vector. Only a copy if fEnvIsCopy is set. */
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| 199 | char **papszEnv;
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| 200 | /** If we made a copy of the environment, this is the size of the
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| 201 | * strings and terminator string (not in array). This is done to
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| 202 | * speed up conversion, since MultiByteToWideChar can handle '\0'. */
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| 203 | size_t cbEnvStrings;
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| 204 | /** The make shell to use (copy). */
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| 205 | char *pszShell;
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| 206 | /** Handle to use for standard out. */
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| 207 | HANDLE hStdOut;
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| 208 | /** Handle to use for standard out. */
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| 209 | HANDLE hStdErr;
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| 210 | /** Whether to close hStdOut after creating the process. */
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| 211 | BOOL fCloseStdOut;
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| 212 | /** Whether to close hStdErr after creating the process. */
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| 213 | BOOL fCloseStdErr;
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| 214 | /** Whether to catch output from the process. */
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| 215 | BOOL fCatchOutput;
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| 216 |
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| 217 | /** Child process handle. */
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| 218 | HANDLE hProcess;
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| 219 | } Process;
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| 220 |
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| 221 | /** Data for WINCHILDTYPE_BUILT_IN. */
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| 222 | struct
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| 223 | {
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| 224 | /** The built-in command. */
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| 225 | PCKMKBUILTINENTRY pBuiltIn;
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| 226 | /** Number of arguments. */
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| 227 | int cArgs;
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| 228 | /** Argument vector (single allocation, strings following array). */
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| 229 | char **papszArgs;
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| 230 | /** Environment vector. Only a copy if fEnvIsCopy is set. */
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| 231 | char **papszEnv;
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| 232 | } BuiltIn;
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| 233 |
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| 234 | /** Data for WINCHILDTYPE_APPEND. */
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| 235 | struct
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| 236 | {
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| 237 | /** The filename. */
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| 238 | char *pszFilename;
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| 239 | /** How much to append. */
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| 240 | size_t cbAppend;
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| 241 | /** What to append. */
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| 242 | char *pszAppend;
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| 243 | /** Whether to truncate the file. */
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| 244 | int fTruncate;
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| 245 | } Append;
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| 246 |
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| 247 | /** Data for WINCHILDTYPE_SUBMIT. */
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| 248 | struct
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| 249 | {
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| 250 | /** The event we're to wait on (hooked up to a pipe) */
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| 251 | HANDLE hEvent;
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| 252 | /** Parameter for the cleanup callback. */
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| 253 | void *pvSubmitWorker;
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| 254 | /** Standard output catching pipe. Optional. */
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| 255 | PWINCCWPIPE pStdOut;
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| 256 | /** Standard error catching pipe. Optional. */
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| 257 | PWINCCWPIPE pStdErr;
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| 258 | } Submit;
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| 259 |
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| 260 | /** Data for WINCHILDTYPE_REDIRECT. */
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| 261 | struct
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| 262 | {
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| 263 | /** Child process handle. */
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| 264 | HANDLE hProcess;
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| 265 | } Redirect;
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| 266 | } u;
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| 267 |
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| 268 | } WINCHILD;
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| 269 | /** WINCHILD::uMagic value. */
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| 270 | #define WINCHILD_MAGIC 0xbabebabeU
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| 271 |
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| 272 |
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| 273 | /**
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| 274 | * Data for a windows childcare worker thread.
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| 275 | *
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| 276 | * We use one worker thread per child, reusing the threads when possible.
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| 277 | *
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| 278 | * This setup helps avoid the 64-bit handle with the WaitForMultipleObject API.
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| 279 | *
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| 280 | * It also helps using all CPUs on systems with more than one CPU group
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| 281 | * (typically systems with more than 64 CPU threads or/and multiple sockets, or
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| 282 | * special configs).
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| 283 | *
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| 284 | * This helps facilitates using pipes for collecting output child rather
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| 285 | * than temporary files. Pipes doesn't involve NTFS and can easily be reused.
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| 286 | *
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| 287 | * Finally, kBuild specific, this allows running kmkbuiltin_xxxx commands in
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| 288 | * threads.
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| 289 | */
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| 290 | typedef struct WINCHILDCAREWORKER
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| 291 | {
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| 292 | /** Magic / eyecatcher (WINCHILDCAREWORKER_MAGIC). */
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| 293 | ULONG uMagic;
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| 294 | /** The worker index. */
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| 295 | unsigned int idxWorker;
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| 296 | /** The processor group for this worker. */
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| 297 | unsigned int iProcessorGroup;
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| 298 | /** The thread ID. */
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| 299 | unsigned int tid;
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| 300 | /** The thread handle. */
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| 301 | HANDLE hThread;
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| 302 | /** The event the thread is idling on. */
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| 303 | HANDLE hEvtIdle;
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| 304 | /** The pipe catching standard output from a child. */
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| 305 | PWINCCWPIPE pStdOut;
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| 306 | /** The pipe catching standard error from a child. */
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| 307 | PWINCCWPIPE pStdErr;
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| 308 |
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| 309 | /** Pointer to the current child. */
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| 310 | PWINCHILD volatile pCurChild;
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| 311 | /** List of children pending execution on this worker.
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| 312 | * This is updated atomitically just like g_pTailCompletedChildren. */
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| 313 | PWINCHILD volatile pTailTodoChildren;
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| 314 | /** TRUE if idle, FALSE if not. */
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| 315 | long volatile fIdle;
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| 316 | } WINCHILDCAREWORKER;
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| 317 | /** WINCHILD::uMagic value. */
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| 318 | #define WINCHILDCAREWORKER_MAGIC 0xdad0dad0U
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| 319 |
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| 320 |
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| 321 | /*********************************************************************************************************************************
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| 322 | * Global Variables *
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| 323 | *********************************************************************************************************************************/
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| 324 | /** Whether it's initialized or not. */
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| 325 | static BOOL g_fInitialized = FALSE;
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| 326 | /** Set when we're shutting down everything. */
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| 327 | static BOOL volatile g_fShutdown = FALSE;
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| 328 | /** Event used to wait for children. */
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| 329 | static HANDLE g_hEvtWaitChildren = INVALID_HANDLE_VALUE;
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| 330 | /** Number of childcare workers currently in g_papChildCareworkers. */
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| 331 | static unsigned g_cChildCareworkers = 0;
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| 332 | /** Maximum number of childcare workers in g_papChildCareworkers. */
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| 333 | static unsigned g_cChildCareworkersMax = 0;
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| 334 | /** Pointer to childcare workers. */
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| 335 | static PWINCHILDCAREWORKER *g_papChildCareworkers = NULL;
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| 336 | /** The processor group allocator state. */
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| 337 | static MKWINCHILDCPUGROUPALLOCSTATE g_ProcessorGroupAllocator;
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| 338 | /** Number of processor groups in the system. */
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| 339 | static unsigned g_cProcessorGroups = 1;
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| 340 | /** Array detailing how many active processors there are in each group. */
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| 341 | static unsigned const *g_pacProcessorsInGroup = &g_cProcessorGroups;
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| 342 | /** Kernel32!GetActiveProcessorGroupCount */
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| 343 | static WORD (WINAPI *g_pfnGetActiveProcessorGroupCount)(VOID);
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| 344 | /** Kernel32!GetActiveProcessorCount */
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| 345 | static DWORD (WINAPI *g_pfnGetActiveProcessorCount)(WORD);
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| 346 | /** Kernel32!SetThreadGroupAffinity */
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| 347 | static BOOL (WINAPI *g_pfnSetThreadGroupAffinity)(HANDLE, CONST GROUP_AFFINITY *, GROUP_AFFINITY *);
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| 348 | /** NTDLL!NtQueryInformationProcess */
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| 349 | static NTSTATUS (NTAPI *g_pfnNtQueryInformationProcess)(HANDLE, PROCESSINFOCLASS, PVOID, ULONG, PULONG);
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| 350 | /** Set if the windows host is 64-bit. */
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| 351 | static BOOL g_f64BitHost = (K_ARCH_BITS == 64);
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| 352 | /** Windows version info.
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| 353 | * @note Putting this before the volatile stuff, hoping to keep it in a
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| 354 | * different cache line than the static bits above. */
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| 355 | static OSVERSIONINFOA g_VersionInfo = { sizeof(g_VersionInfo), 4, 0, 1381, VER_PLATFORM_WIN32_NT, {0} };
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| 356 |
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| 357 | /** Children that has been completed.
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| 358 | * This is updated atomically, pushing completed children in LIFO fashion
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| 359 | * (thus 'tail'), then hitting g_hEvtWaitChildren if head. */
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| 360 | static PWINCHILD volatile g_pTailCompletedChildren = NULL;
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| 361 |
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| 362 | /** Number of idle pending children.
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| 363 | * This is updated before g_hEvtWaitChildren is signalled. */
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| 364 | static unsigned volatile g_cPendingChildren = 0;
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| 365 |
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| 366 | /** Number of idle childcare worker threads. */
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| 367 | static unsigned volatile g_cIdleChildcareWorkers = 0;
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| 368 | /** Index of the last idle child careworker (just a hint). */
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| 369 | static unsigned volatile g_idxLastChildcareWorker = 0;
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| 370 |
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| 371 | #ifdef WITH_RW_LOCK
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| 372 | /** RW lock for serializing kmkbuiltin_redirect and CreateProcess. */
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| 373 | static SRWLOCK g_RWLock;
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| 374 | #endif
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| 375 |
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| 376 |
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| 377 | #if K_ARCH_BITS == 32 && !defined(_InterlockedCompareExchangePointer)
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| 378 | /** _InterlockedCompareExchangePointer is missing? (VS2010) */
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| 379 | K_INLINE void *_InterlockedCompareExchangePointer(void * volatile *ppvDst, void *pvNew, void *pvOld)
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| 380 | {
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| 381 | return (void *)_InterlockedCompareExchange((long volatile *)ppvDst, (intptr_t)pvNew, (intptr_t)pvOld);
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| 382 | }
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| 383 | #endif
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| 384 |
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| 385 |
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| 386 | /**
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| 387 | * Initializes the windows child module.
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| 388 | *
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| 389 | * @param cJobSlots The number of job slots.
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| 390 | */
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| 391 | void MkWinChildInit(unsigned int cJobSlots)
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| 392 | {
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| 393 | HMODULE hmod;
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| 394 |
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| 395 | /*
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| 396 | * Figure out how many childcare workers first.
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| 397 | */
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| 398 | static unsigned int const s_cMaxWorkers = 4096;
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| 399 | unsigned cWorkers;
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| 400 | if (cJobSlots >= 1 && cJobSlots < s_cMaxWorkers)
|
|---|
| 401 | cWorkers = cJobSlots;
|
|---|
| 402 | else
|
|---|
| 403 | cWorkers = s_cMaxWorkers;
|
|---|
| 404 |
|
|---|
| 405 | /*
|
|---|
| 406 | * Allocate the array and the child completed event object.
|
|---|
| 407 | */
|
|---|
| 408 | g_papChildCareworkers = (PWINCHILDCAREWORKER *)xcalloc(cWorkers * sizeof(g_papChildCareworkers[0]));
|
|---|
| 409 | g_cChildCareworkersMax = cWorkers;
|
|---|
| 410 |
|
|---|
| 411 | g_hEvtWaitChildren = CreateEvent(NULL, FALSE /*fManualReset*/, FALSE /*fInitialState*/, NULL /*pszName*/);
|
|---|
| 412 | if (!g_hEvtWaitChildren)
|
|---|
| 413 | fatal(NILF, INTSTR_LENGTH, _("MkWinChildInit: CreateEvent failed: %u"), GetLastError());
|
|---|
| 414 |
|
|---|
| 415 | /*
|
|---|
| 416 | * NTDLL imports that we need.
|
|---|
| 417 | */
|
|---|
| 418 | hmod = GetModuleHandleA("NTDLL.DLL");
|
|---|
| 419 | *(FARPROC *)&g_pfnNtQueryInformationProcess = GetProcAddress(hmod, "NtQueryInformationProcess");
|
|---|
| 420 | if (!g_pfnNtQueryInformationProcess)
|
|---|
| 421 | fatal(NILF, 0, _("MkWinChildInit: NtQueryInformationProcess not found"));
|
|---|
| 422 |
|
|---|
| 423 | #if K_ARCH_BITS == 32
|
|---|
| 424 | /*
|
|---|
| 425 | * Initialize g_f64BitHost.
|
|---|
| 426 | */
|
|---|
| 427 | if (!IsWow64Process(GetCurrentProcess(), &g_f64BitHost))
|
|---|
| 428 | fatal(NILF, INTSTR_LENGTH, _("MkWinChildInit: IsWow64Process failed: %u"), GetLastError());
|
|---|
| 429 | #elif K_ARCH_BITS == 64
|
|---|
| 430 | assert(g_f64BitHost);
|
|---|
| 431 | #else
|
|---|
| 432 | # error "K_ARCH_BITS is bad/missing"
|
|---|
| 433 | #endif
|
|---|
| 434 |
|
|---|
| 435 | /*
|
|---|
| 436 | * Figure out how many processor groups there are.
|
|---|
| 437 | * For that we need to first figure the windows version.
|
|---|
| 438 | */
|
|---|
| 439 | if (!GetVersionExA(&g_VersionInfo))
|
|---|
| 440 | {
|
|---|
| 441 | DWORD uRawVer = GetVersion();
|
|---|
| 442 | g_VersionInfo.dwMajorVersion = uRawVer & 0xff;
|
|---|
| 443 | g_VersionInfo.dwMinorVersion = (uRawVer >> 8) & 0xff;
|
|---|
| 444 | g_VersionInfo.dwBuildNumber = (uRawVer >> 16) & 0x7fff;
|
|---|
| 445 | }
|
|---|
| 446 | if (g_VersionInfo.dwMajorVersion >= 6)
|
|---|
| 447 | {
|
|---|
| 448 | hmod = GetModuleHandleA("KERNEL32.DLL");
|
|---|
| 449 | *(FARPROC *)&g_pfnGetActiveProcessorGroupCount = GetProcAddress(hmod, "GetActiveProcessorGroupCount");
|
|---|
| 450 | *(FARPROC *)&g_pfnGetActiveProcessorCount = GetProcAddress(hmod, "GetActiveProcessorCount");
|
|---|
| 451 | *(FARPROC *)&g_pfnSetThreadGroupAffinity = GetProcAddress(hmod, "SetThreadGroupAffinity");
|
|---|
| 452 | if ( g_pfnSetThreadGroupAffinity
|
|---|
| 453 | && g_pfnGetActiveProcessorCount
|
|---|
| 454 | && g_pfnGetActiveProcessorGroupCount)
|
|---|
| 455 | {
|
|---|
| 456 | unsigned int *pacProcessorsInGroup;
|
|---|
| 457 | unsigned iGroup;
|
|---|
| 458 | g_cProcessorGroups = g_pfnGetActiveProcessorGroupCount();
|
|---|
| 459 | if (g_cProcessorGroups == 0)
|
|---|
| 460 | g_cProcessorGroups = 1;
|
|---|
| 461 |
|
|---|
| 462 | pacProcessorsInGroup = (unsigned int *)xmalloc(sizeof(g_pacProcessorsInGroup[0]) * g_cProcessorGroups);
|
|---|
| 463 | g_pacProcessorsInGroup = pacProcessorsInGroup;
|
|---|
| 464 | for (iGroup = 0; iGroup < g_cProcessorGroups; iGroup++)
|
|---|
| 465 | pacProcessorsInGroup[iGroup] = g_pfnGetActiveProcessorCount(iGroup);
|
|---|
| 466 |
|
|---|
| 467 | MkWinChildInitCpuGroupAllocator(&g_ProcessorGroupAllocator);
|
|---|
| 468 | }
|
|---|
| 469 | else
|
|---|
| 470 | {
|
|---|
| 471 | g_pfnSetThreadGroupAffinity = NULL;
|
|---|
| 472 | g_pfnGetActiveProcessorCount = NULL;
|
|---|
| 473 | g_pfnGetActiveProcessorGroupCount = NULL;
|
|---|
| 474 | }
|
|---|
| 475 | }
|
|---|
| 476 |
|
|---|
| 477 | #ifdef WITH_RW_LOCK
|
|---|
| 478 | /*
|
|---|
| 479 | * For serializing with standard file handle manipulation (kmkbuiltin_redirect).
|
|---|
| 480 | */
|
|---|
| 481 | InitializeSRWLock(&g_RWLock);
|
|---|
| 482 | #endif
|
|---|
| 483 |
|
|---|
| 484 | /*
|
|---|
| 485 | * This is dead code that was thought to fix a problem observed doing
|
|---|
| 486 | * `tcc.exe /c "kmk |& tee bld.log"` and leading to a crash in cl.exe
|
|---|
| 487 | * when spawned with fInheritHandles = FALSE, see hStdErr=NULL in the
|
|---|
| 488 | * child. However, it turns out this was probably caused by not clearing
|
|---|
| 489 | * the CRT file descriptor and handle table in the startup info.
|
|---|
| 490 | * Leaving the code here in case it comes in handy after all.
|
|---|
| 491 | */
|
|---|
| 492 | #if 0
|
|---|
| 493 | {
|
|---|
| 494 | struct
|
|---|
| 495 | {
|
|---|
| 496 | DWORD uStdHandle;
|
|---|
| 497 | HANDLE hHandle;
|
|---|
| 498 | } aHandles[3] = { { STD_INPUT_HANDLE, NULL }, { STD_OUTPUT_HANDLE, NULL }, { STD_ERROR_HANDLE, NULL } };
|
|---|
| 499 | int i;
|
|---|
| 500 |
|
|---|
| 501 | for (i = 0; i < 3; i++)
|
|---|
| 502 | aHandles[i].hHandle = GetStdHandle(aHandles[i].uStdHandle);
|
|---|
| 503 |
|
|---|
| 504 | for (i = 0; i < 3; i++)
|
|---|
| 505 | if ( aHandles[i].hHandle == NULL
|
|---|
| 506 | || aHandles[i].hHandle == INVALID_HANDLE_VALUE)
|
|---|
| 507 | {
|
|---|
| 508 | int fd = open("nul", _O_RDWR);
|
|---|
| 509 | if (fd >= 0)
|
|---|
| 510 | {
|
|---|
| 511 | if (_dup2(fd, i) >= 0)
|
|---|
| 512 | {
|
|---|
| 513 | assert((HANDLE)_get_osfhandle(i) != aHandles[i].hHandle);
|
|---|
| 514 | assert((HANDLE)_get_osfhandle(i) == GetStdHandle(aHandles[i].uStdHandle));
|
|---|
| 515 | }
|
|---|
| 516 | else
|
|---|
| 517 | ONNNS(fatal, NILF, "_dup2(%d('nul'), %d) failed: %u (%s)", fd, i, errno, strerror(errno));
|
|---|
| 518 | if (fd != i)
|
|---|
| 519 | close(fd);
|
|---|
| 520 | }
|
|---|
| 521 | else
|
|---|
| 522 | ONNS(fatal, NILF, "open(nul,RW) failed: %u (%s)", i, errno, strerror(errno));
|
|---|
| 523 | }
|
|---|
| 524 | else
|
|---|
| 525 | {
|
|---|
| 526 | int j;
|
|---|
| 527 | for (j = i + 1; j < 3; j++)
|
|---|
| 528 | if (aHandles[j].hHandle == aHandles[i].hHandle)
|
|---|
| 529 | {
|
|---|
| 530 | int fd = _dup(j);
|
|---|
| 531 | if (fd >= 0)
|
|---|
| 532 | {
|
|---|
| 533 | if (_dup2(fd, j) >= 0)
|
|---|
| 534 | {
|
|---|
| 535 | aHandles[j].hHandle = (HANDLE)_get_osfhandle(j);
|
|---|
| 536 | assert(aHandles[j].hHandle != aHandles[i].hHandle);
|
|---|
| 537 | assert(aHandles[j].hHandle == GetStdHandle(aHandles[j].uStdHandle));
|
|---|
| 538 | }
|
|---|
| 539 | else
|
|---|
| 540 | ONNNS(fatal, NILF, "_dup2(%d, %d) failed: %u (%s)", fd, j, errno, strerror(errno));
|
|---|
| 541 | if (fd != j)
|
|---|
| 542 | close(fd);
|
|---|
| 543 | }
|
|---|
| 544 | else
|
|---|
| 545 | ONNS(fatal, NILF, "_dup(%d) failed: %u (%s)", j, errno, strerror(errno));
|
|---|
| 546 | }
|
|---|
| 547 | }
|
|---|
| 548 | }
|
|---|
| 549 | #endif
|
|---|
| 550 | }
|
|---|
| 551 |
|
|---|
| 552 | /**
|
|---|
| 553 | * Used by mkWinChildcareWorkerThread() and MkWinChildWait() to get the head
|
|---|
| 554 | * child from a lifo (g_pTailCompletedChildren, pTailTodoChildren).
|
|---|
| 555 | *
|
|---|
| 556 | * @returns Head child.
|
|---|
| 557 | * @param ppTail Pointer to the child variable.
|
|---|
| 558 | * @param pChild Tail child.
|
|---|
| 559 | */
|
|---|
| 560 | static PWINCHILD mkWinChildDequeFromLifo(PWINCHILD volatile *ppTail, PWINCHILD pChild)
|
|---|
| 561 | {
|
|---|
| 562 | if (pChild->pNext)
|
|---|
| 563 | {
|
|---|
| 564 | PWINCHILD pPrev;
|
|---|
| 565 | do
|
|---|
| 566 | {
|
|---|
| 567 | pPrev = pChild;
|
|---|
| 568 | pChild = pChild->pNext;
|
|---|
| 569 | } while (pChild->pNext);
|
|---|
| 570 | pPrev->pNext = NULL;
|
|---|
| 571 | }
|
|---|
| 572 | else
|
|---|
| 573 | {
|
|---|
| 574 | PWINCHILD const pWantedChild = pChild;
|
|---|
| 575 | pChild = _InterlockedCompareExchangePointer(ppTail, NULL, pWantedChild);
|
|---|
| 576 | if (pChild != pWantedChild)
|
|---|
| 577 | {
|
|---|
| 578 | PWINCHILD pPrev;
|
|---|
| 579 | do
|
|---|
| 580 | {
|
|---|
| 581 | pPrev = pChild;
|
|---|
| 582 | pChild = pChild->pNext;
|
|---|
| 583 | } while (pChild->pNext);
|
|---|
| 584 | pPrev->pNext = NULL;
|
|---|
| 585 | assert(pChild == pWantedChild);
|
|---|
| 586 | }
|
|---|
| 587 | }
|
|---|
| 588 | return pChild;
|
|---|
| 589 | }
|
|---|
| 590 |
|
|---|
| 591 | /**
|
|---|
| 592 | * Output error message while running on a worker thread.
|
|---|
| 593 | *
|
|---|
| 594 | * @returns -1
|
|---|
| 595 | * @param pWorker The calling worker. Mainly for getting the
|
|---|
| 596 | * current child and its stderr output unit. Pass
|
|---|
| 597 | * NULL if the output should go thru the child
|
|---|
| 598 | * stderr buffering.
|
|---|
| 599 | * @param iType The error type:
|
|---|
| 600 | * - 0: more of a info directly to stdout,
|
|---|
| 601 | * - 1: child related error,
|
|---|
| 602 | * - 2: child related error for immedate release.
|
|---|
| 603 | * @param pszFormat The message format string.
|
|---|
| 604 | * @param ... Argument for the message.
|
|---|
| 605 | */
|
|---|
| 606 | static int MkWinChildError(PWINCHILDCAREWORKER pWorker, int iType, const char *pszFormat, ...)
|
|---|
| 607 | {
|
|---|
| 608 | /*
|
|---|
| 609 | * Format the message into stack buffer.
|
|---|
| 610 | */
|
|---|
| 611 | char szMsg[4096];
|
|---|
| 612 | int cchMsg;
|
|---|
| 613 | int cchPrefix;
|
|---|
| 614 | va_list va;
|
|---|
| 615 |
|
|---|
| 616 | /* Compose the prefix, being paranoid about it not exceeding the buffer in any way. */
|
|---|
| 617 | const char *pszInfix = iType == 0 ? "info: " : "error: ";
|
|---|
| 618 | const char *pszProgram = program;
|
|---|
| 619 | if (strlen(pszProgram) > 80)
|
|---|
| 620 | {
|
|---|
| 621 | #ifdef KMK
|
|---|
| 622 | pszProgram = "kmk";
|
|---|
| 623 | #else
|
|---|
| 624 | pszProgram = "gnumake";
|
|---|
| 625 | #endif
|
|---|
| 626 | }
|
|---|
| 627 | if (makelevel == 0)
|
|---|
| 628 | cchPrefix = snprintf(szMsg, sizeof(szMsg) / 2, "%s: %s", pszProgram, pszInfix);
|
|---|
| 629 | else
|
|---|
| 630 | cchPrefix = snprintf(szMsg, sizeof(szMsg) / 2, "%s[%u]: %s", pszProgram, makelevel, pszInfix);
|
|---|
| 631 | assert(cchPrefix < sizeof(szMsg) / 2 && cchPrefix > 0);
|
|---|
| 632 |
|
|---|
| 633 | /* Format the user specified message. */
|
|---|
| 634 | va_start(va, pszFormat);
|
|---|
| 635 | cchMsg = vsnprintf(&szMsg[cchPrefix], sizeof(szMsg) - 2 - cchPrefix, pszFormat, va);
|
|---|
| 636 | va_end(va);
|
|---|
| 637 | szMsg[sizeof(szMsg) - 2] = '\0';
|
|---|
| 638 | cchMsg = strlen(szMsg);
|
|---|
| 639 |
|
|---|
| 640 | /* Make sure there's a newline at the end of it (we reserved space for that). */
|
|---|
| 641 | if (cchMsg <= 0 || szMsg[cchMsg - 1] != '\n')
|
|---|
| 642 | {
|
|---|
| 643 | szMsg[cchMsg++] = '\n';
|
|---|
| 644 | szMsg[cchMsg] = '\0';
|
|---|
| 645 | }
|
|---|
| 646 |
|
|---|
| 647 | #ifdef CONFIG_WITH_OUTPUT_IN_MEMORY
|
|---|
| 648 | /*
|
|---|
| 649 | * Try use the stderr of the current child of the worker.
|
|---|
| 650 | */
|
|---|
| 651 | if ( iType != 0
|
|---|
| 652 | && iType != 3
|
|---|
| 653 | && pWorker)
|
|---|
| 654 | {
|
|---|
| 655 | PWINCHILD pChild = pWorker->pCurChild;
|
|---|
| 656 | if (pChild)
|
|---|
| 657 | {
|
|---|
| 658 | struct child *pMkChild = pChild->pMkChild;
|
|---|
| 659 | if (pMkChild)
|
|---|
| 660 | {
|
|---|
| 661 | output_write_text(&pMkChild->output, 1 /*is_err*/, szMsg, cchMsg);
|
|---|
| 662 | return -1;
|
|---|
| 663 | }
|
|---|
| 664 | }
|
|---|
| 665 | }
|
|---|
| 666 | #endif
|
|---|
| 667 |
|
|---|
| 668 | /*
|
|---|
| 669 | * Fallback to writing directly to stderr.
|
|---|
| 670 | */
|
|---|
| 671 | maybe_con_fwrite(szMsg, cchMsg, 1, iType == 0 ? stdout : stderr);
|
|---|
| 672 | return -1;
|
|---|
| 673 | }
|
|---|
| 674 |
|
|---|
| 675 | /**
|
|---|
| 676 | * Duplicates the given UTF-16 string.
|
|---|
| 677 | *
|
|---|
| 678 | * @returns 0
|
|---|
| 679 | * @param pwszSrc The UTF-16 string to duplicate.
|
|---|
| 680 | * @param cwcSrc Length, may include the terminator.
|
|---|
| 681 | * @param ppwszDst Where to return the duplicate.
|
|---|
| 682 | */
|
|---|
| 683 | static int mkWinChildDuplicateUtf16String(const WCHAR *pwszSrc, size_t cwcSrc, WCHAR **ppwszDst)
|
|---|
| 684 | {
|
|---|
| 685 | size_t cb = sizeof(WCHAR) * cwcSrc;
|
|---|
| 686 | if (cwcSrc > 0 && pwszSrc[cwcSrc - 1] == L'\0')
|
|---|
| 687 | *ppwszDst = (WCHAR *)memcpy(xmalloc(cb), pwszSrc, cb);
|
|---|
| 688 | else
|
|---|
| 689 | {
|
|---|
| 690 | WCHAR *pwszDst = (WCHAR *)xmalloc(cb + sizeof(WCHAR));
|
|---|
| 691 | memcpy(pwszDst, pwszSrc, cb);
|
|---|
| 692 | pwszDst[cwcSrc] = L'\0';
|
|---|
| 693 | *ppwszDst = pwszDst;
|
|---|
| 694 | }
|
|---|
| 695 | return 0;
|
|---|
| 696 | }
|
|---|
| 697 |
|
|---|
| 698 |
|
|---|
| 699 | /**
|
|---|
| 700 | * Used to flush data we're read but not yet written at the termination of a
|
|---|
| 701 | * process.
|
|---|
| 702 | *
|
|---|
| 703 | * @param pChild The child.
|
|---|
| 704 | * @param pPipe The pipe.
|
|---|
| 705 | */
|
|---|
| 706 | static void mkWinChildcareWorkerFlushUnwritten(PWINCHILD pChild, PWINCCWPIPE pPipe)
|
|---|
| 707 | {
|
|---|
| 708 | DWORD cbUnwritten = pPipe->offPendingRead - pPipe->cbWritten;
|
|---|
| 709 | assert(pPipe->cbWritten <= pPipe->cbBuffer - 16);
|
|---|
| 710 | assert(pPipe->offPendingRead <= pPipe->cbBuffer - 16);
|
|---|
| 711 | if (cbUnwritten)
|
|---|
| 712 | {
|
|---|
| 713 | #ifdef CONFIG_WITH_OUTPUT_IN_MEMORY
|
|---|
| 714 | if (pChild && pChild->pMkChild)
|
|---|
| 715 | {
|
|---|
| 716 | output_write_bin(&pChild->pMkChild->output, pPipe->iWhich == 2, &pPipe->pbBuffer[pPipe->cbWritten], cbUnwritten);
|
|---|
| 717 | pPipe->cbWritten += cbUnwritten;
|
|---|
| 718 | }
|
|---|
| 719 | else
|
|---|
| 720 | #endif
|
|---|
| 721 | {
|
|---|
| 722 | DWORD cbWritten = 0;
|
|---|
| 723 | if (WriteFile(GetStdHandle(pPipe->iWhich == 1 ? STD_OUTPUT_HANDLE : STD_ERROR_HANDLE),
|
|---|
| 724 | &pPipe->pbBuffer[pPipe->cbWritten], cbUnwritten, &cbWritten, NULL))
|
|---|
| 725 | pPipe->cbWritten += cbWritten <= cbUnwritten ? cbWritten : cbUnwritten; /* paranoia */
|
|---|
| 726 | }
|
|---|
| 727 | pPipe->fHaveWrittenOut = TRUE;
|
|---|
| 728 | }
|
|---|
| 729 | }
|
|---|
| 730 |
|
|---|
| 731 | /**
|
|---|
| 732 | * This logic mirrors kwSandboxConsoleFlushAll.
|
|---|
| 733 | *
|
|---|
| 734 | * @returns TRUE if it looks like a CL.EXE source line, otherwise FALSE.
|
|---|
| 735 | * @param pPipe The pipe.
|
|---|
| 736 | * @param offStart The start of the output in the pipe buffer.
|
|---|
| 737 | * @param offEnd The end of the output in the pipe buffer.
|
|---|
| 738 | */
|
|---|
| 739 | static BOOL mkWinChildcareWorkerIsClExeSourceLine(PWINCCWPIPE pPipe, DWORD offStart, DWORD offEnd)
|
|---|
| 740 | {
|
|---|
| 741 | if (offEnd < offStart + 2)
|
|---|
| 742 | return FALSE;
|
|---|
| 743 | if (offEnd - offStart > 80)
|
|---|
| 744 | return FALSE;
|
|---|
| 745 |
|
|---|
| 746 | if ( pPipe->pbBuffer[offEnd - 2] != '\r'
|
|---|
| 747 | || pPipe->pbBuffer[offEnd - 1] != '\n')
|
|---|
| 748 | return FALSE;
|
|---|
| 749 |
|
|---|
| 750 | offEnd -= 2;
|
|---|
| 751 | while (offEnd-- > offStart)
|
|---|
| 752 | {
|
|---|
| 753 | char ch = pPipe->pbBuffer[offEnd];
|
|---|
| 754 | if (isalnum(ch) || ch == '.' || ch == ' ' || ch == '_' || ch == '-')
|
|---|
| 755 | { /* likely */ }
|
|---|
| 756 | else
|
|---|
| 757 | return FALSE;
|
|---|
| 758 | }
|
|---|
| 759 |
|
|---|
| 760 | return TRUE;
|
|---|
| 761 | }
|
|---|
| 762 |
|
|---|
| 763 | /**
|
|---|
| 764 | * Adds output to the given standard output for the child.
|
|---|
| 765 | *
|
|---|
| 766 | * There is no pending read when this function is called, so we're free to
|
|---|
| 767 | * reshuffle the buffer if desirable.
|
|---|
| 768 | *
|
|---|
| 769 | * @param pChild The child. Optional (kSubmit).
|
|---|
| 770 | * @param iWhich Which standard descriptor number.
|
|---|
| 771 | * @param cbNewData How much more output was caught.
|
|---|
| 772 | */
|
|---|
| 773 | static void mkWinChildcareWorkerCaughtMoreOutput(PWINCHILD pChild, PWINCCWPIPE pPipe, DWORD cbNewData)
|
|---|
| 774 | {
|
|---|
| 775 | DWORD offStart = pPipe->cbWritten;
|
|---|
| 776 | assert(offStart <= pPipe->offPendingRead);
|
|---|
| 777 | assert(offStart <= pPipe->cbBuffer - 16);
|
|---|
| 778 | assert(pPipe->offPendingRead <= pPipe->cbBuffer - 16);
|
|---|
| 779 | if (cbNewData > 0)
|
|---|
| 780 | {
|
|---|
| 781 | DWORD offRest;
|
|---|
| 782 |
|
|---|
| 783 | /* Move offPendingRead ahead by cbRead. */
|
|---|
| 784 | pPipe->offPendingRead += cbNewData;
|
|---|
| 785 | assert(pPipe->offPendingRead <= pPipe->cbBuffer);
|
|---|
| 786 | if (pPipe->offPendingRead > pPipe->cbBuffer)
|
|---|
| 787 | pPipe->offPendingRead = pPipe->cbBuffer;
|
|---|
| 788 |
|
|---|
| 789 | /* Locate the last newline in the buffer. */
|
|---|
| 790 | offRest = pPipe->offPendingRead;
|
|---|
| 791 | while (offRest > offStart && pPipe->pbBuffer[offRest - 1] != '\n')
|
|---|
| 792 | offRest--;
|
|---|
| 793 |
|
|---|
| 794 | /* If none were found and we've less than 16 bytes left in the buffer, try
|
|---|
| 795 | find a word boundrary to flush on instead. */
|
|---|
| 796 | if ( offRest <= offStart
|
|---|
| 797 | && pPipe->cbBuffer - pPipe->offPendingRead + offStart < 16)
|
|---|
| 798 | {
|
|---|
| 799 | offRest = pPipe->offPendingRead;
|
|---|
| 800 | while ( offRest > offStart
|
|---|
| 801 | && isalnum(pPipe->pbBuffer[offRest - 1]))
|
|---|
| 802 | offRest--;
|
|---|
| 803 | if (offRest == offStart)
|
|---|
| 804 | offRest = pPipe->offPendingRead;
|
|---|
| 805 | }
|
|---|
| 806 | /* If this is a potential CL.EXE process, we will keep the source
|
|---|
| 807 | filename unflushed and maybe discard it at the end. */
|
|---|
| 808 | else if ( pChild
|
|---|
| 809 | && pChild->fProbableClExe
|
|---|
| 810 | && pPipe->iWhich == 1
|
|---|
| 811 | && offRest == pPipe->offPendingRead
|
|---|
| 812 | && mkWinChildcareWorkerIsClExeSourceLine(pPipe, offStart, offRest))
|
|---|
| 813 | offRest = offStart;
|
|---|
| 814 |
|
|---|
| 815 | if (offRest > offStart)
|
|---|
| 816 | {
|
|---|
| 817 | /* Write out offStart..offRest. */
|
|---|
| 818 | DWORD cbToWrite = offRest - offStart;
|
|---|
| 819 | #ifdef CONFIG_WITH_OUTPUT_IN_MEMORY
|
|---|
| 820 | if (pChild && pChild->pMkChild)
|
|---|
| 821 | {
|
|---|
| 822 | output_write_bin(&pChild->pMkChild->output, pPipe->iWhich == 2, &pPipe->pbBuffer[offStart], cbToWrite);
|
|---|
| 823 | offStart += cbToWrite;
|
|---|
| 824 | pPipe->cbWritten = offStart;
|
|---|
| 825 | }
|
|---|
| 826 | else
|
|---|
| 827 | #endif
|
|---|
| 828 | {
|
|---|
| 829 | DWORD cbWritten = 0;
|
|---|
| 830 | if (WriteFile(GetStdHandle(pPipe->iWhich == 1 ? STD_OUTPUT_HANDLE : STD_ERROR_HANDLE),
|
|---|
| 831 | &pPipe->pbBuffer[offStart], cbToWrite, &cbWritten, NULL))
|
|---|
| 832 | {
|
|---|
| 833 | offStart += cbWritten <= cbToWrite ? cbWritten : cbToWrite; /* paranoia */
|
|---|
| 834 | pPipe->cbWritten = offStart;
|
|---|
| 835 | }
|
|---|
| 836 | }
|
|---|
| 837 | pPipe->fHaveWrittenOut = TRUE;
|
|---|
| 838 | }
|
|---|
| 839 | }
|
|---|
| 840 |
|
|---|
| 841 | /* Shuffle the data to the front of the buffer. */
|
|---|
| 842 | if (offStart > 0)
|
|---|
| 843 | {
|
|---|
| 844 | DWORD cbUnwritten = pPipe->offPendingRead - offStart;
|
|---|
| 845 | if (cbUnwritten > 0)
|
|---|
| 846 | memmove(pPipe->pbBuffer, &pPipe->pbBuffer[offStart], cbUnwritten);
|
|---|
| 847 | pPipe->offPendingRead -= pPipe->cbWritten;
|
|---|
| 848 | pPipe->cbWritten = 0;
|
|---|
| 849 | }
|
|---|
| 850 | }
|
|---|
| 851 |
|
|---|
| 852 | /**
|
|---|
| 853 | * Catches output from the given pipe.
|
|---|
| 854 | *
|
|---|
| 855 | * @param pChild The child. Optional (kSubmit).
|
|---|
| 856 | * @param pPipe The pipe.
|
|---|
| 857 | * @param fDraining Set if we're draining the pipe after the process
|
|---|
| 858 | * terminated.
|
|---|
| 859 | */
|
|---|
| 860 | static void mkWinChildcareWorkerCatchOutput(PWINCHILD pChild, PWINCCWPIPE pPipe, BOOL fDraining)
|
|---|
| 861 | {
|
|---|
| 862 | /*
|
|---|
| 863 | * Deal with already pending read.
|
|---|
| 864 | */
|
|---|
| 865 | if (pPipe->fReadPending)
|
|---|
| 866 | {
|
|---|
| 867 | DWORD cbRead = 0;
|
|---|
| 868 | if (GetOverlappedResult(pPipe->hPipeMine, &pPipe->Overlapped, &cbRead, !fDraining))
|
|---|
| 869 | {
|
|---|
| 870 | mkWinChildcareWorkerCaughtMoreOutput(pChild, pPipe, cbRead);
|
|---|
| 871 | pPipe->fReadPending = FALSE;
|
|---|
| 872 | }
|
|---|
| 873 | else if (fDraining && GetLastError() == ERROR_IO_INCOMPLETE)
|
|---|
| 874 | return;
|
|---|
| 875 | else
|
|---|
| 876 | {
|
|---|
| 877 | MkWinChildError(pChild ? pChild->pWorker : NULL, 2, "GetOverlappedResult failed: %u\n", GetLastError());
|
|---|
| 878 | pPipe->fReadPending = FALSE;
|
|---|
| 879 | if (fDraining)
|
|---|
| 880 | return;
|
|---|
| 881 | }
|
|---|
| 882 | }
|
|---|
| 883 |
|
|---|
| 884 | /*
|
|---|
| 885 | * Read data till one becomes pending.
|
|---|
| 886 | */
|
|---|
| 887 | for (;;)
|
|---|
| 888 | {
|
|---|
| 889 | DWORD cbRead;
|
|---|
| 890 |
|
|---|
| 891 | memset(&pPipe->Overlapped, 0, sizeof(pPipe->Overlapped));
|
|---|
| 892 | pPipe->Overlapped.hEvent = pPipe->hEvent;
|
|---|
| 893 | ResetEvent(pPipe->hEvent);
|
|---|
| 894 |
|
|---|
| 895 | assert(pPipe->offPendingRead < pPipe->cbBuffer);
|
|---|
| 896 | SetLastError(0);
|
|---|
| 897 | cbRead = 0;
|
|---|
| 898 | if (!ReadFile(pPipe->hPipeMine, &pPipe->pbBuffer[pPipe->offPendingRead],
|
|---|
| 899 | pPipe->cbBuffer - pPipe->offPendingRead, &cbRead, &pPipe->Overlapped))
|
|---|
| 900 | {
|
|---|
| 901 | DWORD dwErr = GetLastError();
|
|---|
| 902 | if (dwErr == ERROR_IO_PENDING)
|
|---|
| 903 | pPipe->fReadPending = TRUE;
|
|---|
| 904 | else
|
|---|
| 905 | MkWinChildError(pChild ? pChild->pWorker : NULL, 2,
|
|---|
| 906 | "ReadFile failed on standard %s: %u\n",
|
|---|
| 907 | pPipe->iWhich == 1 ? "output" : "error", GetLastError());
|
|---|
| 908 | return;
|
|---|
| 909 | }
|
|---|
| 910 |
|
|---|
| 911 | mkWinChildcareWorkerCaughtMoreOutput(pChild, pPipe, cbRead);
|
|---|
| 912 | }
|
|---|
| 913 | }
|
|---|
| 914 |
|
|---|
| 915 | /**
|
|---|
| 916 | * Makes sure the output pipes are drained and pushed to output.
|
|---|
| 917 | *
|
|---|
| 918 | * @param pChild The child. Optional (kSubmit).
|
|---|
| 919 | * @param pStdOut The standard output pipe structure.
|
|---|
| 920 | * @param pStdErr The standard error pipe structure.
|
|---|
| 921 | */
|
|---|
| 922 | void MkWinChildcareWorkerDrainPipes(PWINCHILD pChild, PWINCCWPIPE pStdOut, PWINCCWPIPE pStdErr)
|
|---|
| 923 | {
|
|---|
| 924 | mkWinChildcareWorkerCatchOutput(pChild, pStdOut, TRUE /*fDraining*/);
|
|---|
| 925 | mkWinChildcareWorkerCatchOutput(pChild, pStdErr, TRUE /*fDraining*/);
|
|---|
| 926 |
|
|---|
| 927 | /* Drop lone 'source.c' line from CL.exe, but only if no other output at all. */
|
|---|
| 928 | if ( pChild
|
|---|
| 929 | && pChild->fProbableClExe
|
|---|
| 930 | && !pStdOut->fHaveWrittenOut
|
|---|
| 931 | && !pStdErr->fHaveWrittenOut
|
|---|
| 932 | && pStdErr->cbWritten == pStdErr->offPendingRead
|
|---|
| 933 | && pStdOut->cbWritten < pStdOut->offPendingRead
|
|---|
| 934 | && mkWinChildcareWorkerIsClExeSourceLine(pStdOut, pStdOut->cbWritten, pStdOut->offPendingRead))
|
|---|
| 935 | {
|
|---|
| 936 | if (!pStdOut->fReadPending)
|
|---|
| 937 | pStdOut->cbWritten = pStdOut->offPendingRead = 0;
|
|---|
| 938 | else
|
|---|
| 939 | pStdOut->cbWritten = pStdOut->offPendingRead;
|
|---|
| 940 | }
|
|---|
| 941 | else
|
|---|
| 942 | {
|
|---|
| 943 | mkWinChildcareWorkerFlushUnwritten(pChild, pStdOut);
|
|---|
| 944 | mkWinChildcareWorkerFlushUnwritten(pChild, pStdErr);
|
|---|
| 945 | }
|
|---|
| 946 | }
|
|---|
| 947 |
|
|---|
| 948 | /**
|
|---|
| 949 | * Commmon worker for waiting on a child process and retrieving the exit code.
|
|---|
| 950 | *
|
|---|
| 951 | * @returns Child exit code.
|
|---|
| 952 | * @param pWorker The worker.
|
|---|
| 953 | * @param pChild The child.
|
|---|
| 954 | * @param hProcess The process handle.
|
|---|
| 955 | * @param pwszJob The job name.
|
|---|
| 956 | * @param fCatchOutput Set if we need to work the output pipes
|
|---|
| 957 | * associated with the worker.
|
|---|
| 958 | */
|
|---|
| 959 | static int mkWinChildcareWorkerWaitForProcess(PWINCHILDCAREWORKER pWorker, PWINCHILD pChild, HANDLE hProcess,
|
|---|
| 960 | WCHAR const *pwszJob, BOOL fCatchOutput)
|
|---|
| 961 | {
|
|---|
| 962 | DWORD const msStart = GetTickCount();
|
|---|
| 963 | DWORD msNextMsg = msStart + 15000;
|
|---|
| 964 |
|
|---|
| 965 | /* Reset the written indicators on the pipes before we start loop. */
|
|---|
| 966 | pWorker->pStdOut->fHaveWrittenOut = FALSE;
|
|---|
| 967 | pWorker->pStdErr->fHaveWrittenOut = FALSE;
|
|---|
| 968 |
|
|---|
| 969 | for (;;)
|
|---|
| 970 | {
|
|---|
| 971 | /*
|
|---|
| 972 | * Do the waiting and output catching.
|
|---|
| 973 | */
|
|---|
| 974 | DWORD dwStatus;
|
|---|
| 975 | if (!fCatchOutput)
|
|---|
| 976 | dwStatus = WaitForSingleObject(hProcess, 15001 /*ms*/);
|
|---|
| 977 | else
|
|---|
| 978 | {
|
|---|
| 979 | HANDLE ahHandles[3] = { hProcess, pWorker->pStdOut->hEvent, pWorker->pStdErr->hEvent };
|
|---|
| 980 | dwStatus = WaitForMultipleObjects(3, ahHandles, FALSE /*fWaitAll*/, 1000 /*ms*/);
|
|---|
| 981 | if (dwStatus == WAIT_OBJECT_0 + 1)
|
|---|
| 982 | mkWinChildcareWorkerCatchOutput(pChild, pWorker->pStdOut, FALSE /*fDraining*/);
|
|---|
| 983 | else if (dwStatus == WAIT_OBJECT_0 + 2)
|
|---|
| 984 | mkWinChildcareWorkerCatchOutput(pChild, pWorker->pStdErr, FALSE /*fDraining*/);
|
|---|
| 985 | }
|
|---|
| 986 | assert(dwStatus != WAIT_FAILED);
|
|---|
| 987 |
|
|---|
| 988 | /*
|
|---|
| 989 | * Get the exit code and return if the process was signalled as done.
|
|---|
| 990 | */
|
|---|
| 991 | if (dwStatus == WAIT_OBJECT_0)
|
|---|
| 992 | {
|
|---|
| 993 | DWORD dwExitCode = -42;
|
|---|
| 994 | if (GetExitCodeProcess(hProcess, &dwExitCode))
|
|---|
| 995 | {
|
|---|
| 996 | pChild->iExitCode = (int)dwExitCode;
|
|---|
| 997 | if (fCatchOutput)
|
|---|
| 998 | MkWinChildcareWorkerDrainPipes(pChild, pWorker->pStdOut, pWorker->pStdErr);
|
|---|
| 999 | return dwExitCode;
|
|---|
| 1000 | }
|
|---|
| 1001 | }
|
|---|
| 1002 | /*
|
|---|
| 1003 | * Loop again if just a timeout or pending output?
|
|---|
| 1004 | * Put out a message every 15 or 30 seconds if the job takes a while.
|
|---|
| 1005 | */
|
|---|
| 1006 | else if ( dwStatus == WAIT_TIMEOUT
|
|---|
| 1007 | || dwStatus == WAIT_OBJECT_0 + 1
|
|---|
| 1008 | || dwStatus == WAIT_OBJECT_0 + 2
|
|---|
| 1009 | || dwStatus == WAIT_IO_COMPLETION)
|
|---|
| 1010 | {
|
|---|
| 1011 | DWORD msNow = GetTickCount();
|
|---|
| 1012 | if (msNow >= msNextMsg)
|
|---|
| 1013 | {
|
|---|
| 1014 | if ( !pChild->pMkChild
|
|---|
| 1015 | || !pChild->pMkChild->recursive) /* ignore make recursions */
|
|---|
| 1016 | {
|
|---|
| 1017 | if ( !pChild->pMkChild
|
|---|
| 1018 | || !pChild->pMkChild->file
|
|---|
| 1019 | || !pChild->pMkChild->file->name)
|
|---|
| 1020 | MkWinChildError(NULL, 0, "Pid %u ('%ls') still running after %u seconds\n",
|
|---|
| 1021 | GetProcessId(hProcess), pwszJob, (msNow - msStart) / 1000);
|
|---|
| 1022 | else
|
|---|
| 1023 | MkWinChildError(NULL, 0, "Target '%s' (pid %u) still running after %u seconds\n",
|
|---|
| 1024 | pChild->pMkChild->file->name, GetProcessId(hProcess), (msNow - msStart) / 1000);
|
|---|
| 1025 | }
|
|---|
| 1026 |
|
|---|
| 1027 | /* After 15s, 30s, 60s, 120s, 180s, ... */
|
|---|
| 1028 | if (msNextMsg == msStart + 15000)
|
|---|
| 1029 | msNextMsg += 15000;
|
|---|
| 1030 | else
|
|---|
| 1031 | msNextMsg += 30000;
|
|---|
| 1032 | }
|
|---|
| 1033 | continue;
|
|---|
| 1034 | }
|
|---|
| 1035 |
|
|---|
| 1036 | /* Something failed. */
|
|---|
| 1037 | pChild->iExitCode = GetLastError();
|
|---|
| 1038 | if (pChild->iExitCode == 0)
|
|---|
| 1039 | pChild->iExitCode = -4242;
|
|---|
| 1040 | return pChild->iExitCode;
|
|---|
| 1041 | }
|
|---|
| 1042 | }
|
|---|
| 1043 |
|
|---|
| 1044 |
|
|---|
| 1045 | /**
|
|---|
| 1046 | * Closes standard handles that need closing before destruction.
|
|---|
| 1047 | *
|
|---|
| 1048 | * @param pChild The child (WINCHILDTYPE_PROCESS).
|
|---|
| 1049 | */
|
|---|
| 1050 | static void mkWinChildcareWorkerCloseStandardHandles(PWINCHILD pChild)
|
|---|
| 1051 | {
|
|---|
| 1052 | if ( pChild->u.Process.fCloseStdOut
|
|---|
| 1053 | && pChild->u.Process.hStdOut != INVALID_HANDLE_VALUE)
|
|---|
| 1054 | {
|
|---|
| 1055 | CloseHandle(pChild->u.Process.hStdOut);
|
|---|
| 1056 | pChild->u.Process.hStdOut = INVALID_HANDLE_VALUE;
|
|---|
| 1057 | pChild->u.Process.fCloseStdOut = FALSE;
|
|---|
| 1058 | }
|
|---|
| 1059 | if ( pChild->u.Process.fCloseStdErr
|
|---|
| 1060 | && pChild->u.Process.hStdErr != INVALID_HANDLE_VALUE)
|
|---|
| 1061 | {
|
|---|
| 1062 | CloseHandle(pChild->u.Process.hStdErr);
|
|---|
| 1063 | pChild->u.Process.hStdErr = INVALID_HANDLE_VALUE;
|
|---|
| 1064 | pChild->u.Process.fCloseStdErr = FALSE;
|
|---|
| 1065 | }
|
|---|
| 1066 | }
|
|---|
| 1067 |
|
|---|
| 1068 |
|
|---|
| 1069 | /**
|
|---|
| 1070 | * Does the actual process creation given.
|
|---|
| 1071 | *
|
|---|
| 1072 | * @returns 0 if there is anything to wait on, otherwise non-zero windows error.
|
|---|
| 1073 | * @param pWorker The childcare worker.
|
|---|
| 1074 | * @param pChild The child.
|
|---|
| 1075 | * @param pwszImageName The image path.
|
|---|
| 1076 | * @param pwszCommandLine The command line.
|
|---|
| 1077 | * @param pwszzEnvironment The enviornment block.
|
|---|
| 1078 | */
|
|---|
| 1079 | static int mkWinChildcareWorkerCreateProcess(PWINCHILDCAREWORKER pWorker, WCHAR const *pwszImageName,
|
|---|
| 1080 | WCHAR const *pwszCommandLine, WCHAR const *pwszzEnvironment, WCHAR const *pwszCwd,
|
|---|
| 1081 | BOOL pafReplace[3], HANDLE pahChild[3], BOOL fCatchOutput, HANDLE *phProcess)
|
|---|
| 1082 | {
|
|---|
| 1083 | PROCESS_INFORMATION ProcInfo;
|
|---|
| 1084 | STARTUPINFOW StartupInfo;
|
|---|
| 1085 | DWORD fFlags = CREATE_UNICODE_ENVIRONMENT;
|
|---|
| 1086 | BOOL const fHaveHandles = pafReplace[0] | pafReplace[1] | pafReplace[2];
|
|---|
| 1087 | BOOL fRet;
|
|---|
| 1088 | DWORD dwErr;
|
|---|
| 1089 | #ifdef KMK
|
|---|
| 1090 | extern int process_priority;
|
|---|
| 1091 | #endif
|
|---|
| 1092 |
|
|---|
| 1093 | /*
|
|---|
| 1094 | * Populate startup info.
|
|---|
| 1095 | *
|
|---|
| 1096 | * Turns out we can get away without passing TRUE for the inherit handles
|
|---|
| 1097 | * parameter to CreateProcess when we're not using STARTF_USESTDHANDLES.
|
|---|
| 1098 | * At least on NT, which is all worth caring about at this point + context IMO.
|
|---|
| 1099 | *
|
|---|
| 1100 | * Not inherting the handles is a good thing because it means we won't
|
|---|
| 1101 | * accidentally end up with a pipe handle or such intended for a different
|
|---|
| 1102 | * child process, potentially causing the EOF/HUP event to be delayed.
|
|---|
| 1103 | *
|
|---|
| 1104 | * Since the present handle inhertiance requirements only involves standard
|
|---|
| 1105 | * output and error, we'll never set the inherit handles flag and instead
|
|---|
| 1106 | * do manual handle duplication and planting.
|
|---|
| 1107 | */
|
|---|
| 1108 | memset(&StartupInfo, 0, sizeof(StartupInfo));
|
|---|
| 1109 | StartupInfo.cb = sizeof(StartupInfo);
|
|---|
| 1110 | GetStartupInfoW(&StartupInfo);
|
|---|
| 1111 | StartupInfo.lpReserved2 = 0; /* No CRT file handle + descriptor info possible, sorry. */
|
|---|
| 1112 | StartupInfo.cbReserved2 = 0;
|
|---|
| 1113 | if ( !fHaveHandles
|
|---|
| 1114 | && !fCatchOutput)
|
|---|
| 1115 | StartupInfo.dwFlags &= ~STARTF_USESTDHANDLES;
|
|---|
| 1116 | else
|
|---|
| 1117 | {
|
|---|
| 1118 | fFlags |= CREATE_SUSPENDED;
|
|---|
| 1119 | StartupInfo.dwFlags &= ~STARTF_USESTDHANDLES;
|
|---|
| 1120 | }
|
|---|
| 1121 |
|
|---|
| 1122 | /*
|
|---|
| 1123 | * Flags.
|
|---|
| 1124 | */
|
|---|
| 1125 | #ifdef KMK
|
|---|
| 1126 | switch (process_priority)
|
|---|
| 1127 | {
|
|---|
| 1128 | case 1: fFlags |= CREATE_SUSPENDED | IDLE_PRIORITY_CLASS; break;
|
|---|
| 1129 | case 2: fFlags |= CREATE_SUSPENDED | BELOW_NORMAL_PRIORITY_CLASS; break;
|
|---|
| 1130 | case 3: fFlags |= CREATE_SUSPENDED | NORMAL_PRIORITY_CLASS; break;
|
|---|
| 1131 | case 4: fFlags |= CREATE_SUSPENDED | HIGH_PRIORITY_CLASS; break;
|
|---|
| 1132 | case 5: fFlags |= CREATE_SUSPENDED | REALTIME_PRIORITY_CLASS; break;
|
|---|
| 1133 | }
|
|---|
| 1134 | #endif
|
|---|
| 1135 | if (g_cProcessorGroups > 1)
|
|---|
| 1136 | fFlags |= CREATE_SUSPENDED;
|
|---|
| 1137 |
|
|---|
| 1138 | /*
|
|---|
| 1139 | * Try create the process.
|
|---|
| 1140 | */
|
|---|
| 1141 | DB(DB_JOBS, ("CreateProcessW(%ls, %ls,,, TRUE, %#x...)\n", pwszImageName, pwszCommandLine, fFlags));
|
|---|
| 1142 | memset(&ProcInfo, 0, sizeof(ProcInfo));
|
|---|
| 1143 | #ifdef WITH_RW_LOCK
|
|---|
| 1144 | AcquireSRWLockShared(&g_RWLock);
|
|---|
| 1145 | #endif
|
|---|
| 1146 |
|
|---|
| 1147 | fRet = CreateProcessW((WCHAR *)pwszImageName, (WCHAR *)pwszCommandLine, NULL /*pProcSecAttr*/, NULL /*pThreadSecAttr*/,
|
|---|
| 1148 | FALSE /*fInheritHandles*/, fFlags, (WCHAR *)pwszzEnvironment, pwszCwd, &StartupInfo, &ProcInfo);
|
|---|
| 1149 | dwErr = GetLastError();
|
|---|
| 1150 |
|
|---|
| 1151 | #ifdef WITH_RW_LOCK
|
|---|
| 1152 | ReleaseSRWLockShared(&g_RWLock);
|
|---|
| 1153 | #endif
|
|---|
| 1154 | if (fRet)
|
|---|
| 1155 | *phProcess = ProcInfo.hProcess;
|
|---|
| 1156 | else
|
|---|
| 1157 | {
|
|---|
| 1158 | MkWinChildError(pWorker, 1, "CreateProcess(%ls) failed: %u\n", pwszImageName, dwErr);
|
|---|
| 1159 | return (int)dwErr;
|
|---|
| 1160 | }
|
|---|
| 1161 |
|
|---|
| 1162 | /*
|
|---|
| 1163 | * If the child is suspended, we've got some adjustment work to be done.
|
|---|
| 1164 | */
|
|---|
| 1165 | dwErr = ERROR_SUCCESS;
|
|---|
| 1166 | if (fFlags & CREATE_SUSPENDED)
|
|---|
| 1167 | {
|
|---|
| 1168 | /*
|
|---|
| 1169 | * First do handle inhertiance as that's the most complicated.
|
|---|
| 1170 | */
|
|---|
| 1171 | if (fHaveHandles || fCatchOutput)
|
|---|
| 1172 | {
|
|---|
| 1173 | char szErrMsg[128];
|
|---|
| 1174 | if (fCatchOutput)
|
|---|
| 1175 | {
|
|---|
| 1176 | if (!pafReplace[1])
|
|---|
| 1177 | {
|
|---|
| 1178 | pafReplace[1] = TRUE;
|
|---|
| 1179 | pahChild[1] = pWorker->pStdOut->hPipeChild;
|
|---|
| 1180 | }
|
|---|
| 1181 | if (!pafReplace[2])
|
|---|
| 1182 | {
|
|---|
| 1183 | pafReplace[2] = TRUE;
|
|---|
| 1184 | pahChild[2] = pWorker->pStdErr->hPipeChild;
|
|---|
| 1185 | }
|
|---|
| 1186 | }
|
|---|
| 1187 | dwErr = nt_child_inject_standard_handles(ProcInfo.hProcess, pafReplace, pahChild, szErrMsg, sizeof(szErrMsg));
|
|---|
| 1188 | if (dwErr != 0)
|
|---|
| 1189 | MkWinChildError(pWorker, 1, "%s\n", szErrMsg);
|
|---|
| 1190 | }
|
|---|
| 1191 |
|
|---|
| 1192 | /*
|
|---|
| 1193 | * Assign processor group (ignore failure).
|
|---|
| 1194 | */
|
|---|
| 1195 | #ifdef MKWINCHILD_DO_SET_PROCESSOR_GROUP
|
|---|
| 1196 | if (g_cProcessorGroups > 1)
|
|---|
| 1197 | {
|
|---|
| 1198 | GROUP_AFFINITY Affinity = { 0, pWorker->iProcessorGroup, { 0, 0, 0 } };
|
|---|
| 1199 | fRet = g_pfnSetThreadGroupAffinity(ProcInfo.hThread, &Affinity, NULL);
|
|---|
| 1200 | assert(fRet);
|
|---|
| 1201 | }
|
|---|
| 1202 | #endif
|
|---|
| 1203 |
|
|---|
| 1204 | #ifdef KMK
|
|---|
| 1205 | /*
|
|---|
| 1206 | * Set priority (ignore failure).
|
|---|
| 1207 | */
|
|---|
| 1208 | switch (process_priority)
|
|---|
| 1209 | {
|
|---|
| 1210 | case 1: fRet = SetThreadPriority(ProcInfo.hThread, THREAD_PRIORITY_IDLE); break;
|
|---|
| 1211 | case 2: fRet = SetThreadPriority(ProcInfo.hThread, THREAD_PRIORITY_BELOW_NORMAL); break;
|
|---|
| 1212 | case 3: fRet = SetThreadPriority(ProcInfo.hThread, THREAD_PRIORITY_NORMAL); break;
|
|---|
| 1213 | case 4: fRet = SetThreadPriority(ProcInfo.hThread, THREAD_PRIORITY_HIGHEST); break;
|
|---|
| 1214 | case 5: fRet = SetThreadPriority(ProcInfo.hThread, THREAD_PRIORITY_TIME_CRITICAL); break;
|
|---|
| 1215 | default: fRet = TRUE;
|
|---|
| 1216 | }
|
|---|
| 1217 | assert(fRet);
|
|---|
| 1218 | #endif
|
|---|
| 1219 |
|
|---|
| 1220 | /*
|
|---|
| 1221 | * Resume the thread if the adjustments succeeded, otherwise kill it.
|
|---|
| 1222 | */
|
|---|
| 1223 | if (dwErr == ERROR_SUCCESS)
|
|---|
| 1224 | {
|
|---|
| 1225 | fRet = ResumeThread(ProcInfo.hThread);
|
|---|
| 1226 | assert(fRet);
|
|---|
| 1227 | if (!fRet)
|
|---|
| 1228 | {
|
|---|
| 1229 | dwErr = GetLastError();
|
|---|
| 1230 | MkWinChildError(pWorker, 1, "ResumeThread failed on child process: %u\n", dwErr);
|
|---|
| 1231 | }
|
|---|
| 1232 | }
|
|---|
| 1233 | if (dwErr != ERROR_SUCCESS)
|
|---|
| 1234 | TerminateProcess(ProcInfo.hProcess, dwErr);
|
|---|
| 1235 | }
|
|---|
| 1236 |
|
|---|
| 1237 | /*
|
|---|
| 1238 | * Close unnecessary handles and cache the image.
|
|---|
| 1239 | */
|
|---|
| 1240 | CloseHandle(ProcInfo.hThread);
|
|---|
| 1241 | kmk_cache_exec_image_w(pwszImageName);
|
|---|
| 1242 | return 0;
|
|---|
| 1243 | }
|
|---|
| 1244 |
|
|---|
| 1245 | /**
|
|---|
| 1246 | * Converts a argument vector that has already been quoted correctly.
|
|---|
| 1247 | *
|
|---|
| 1248 | * The argument vector is typically the result of quote_argv().
|
|---|
| 1249 | *
|
|---|
| 1250 | * @returns 0 on success, non-zero on failure.
|
|---|
| 1251 | * @param pWorker The childcare worker.
|
|---|
| 1252 | * @param papszArgs The argument vector to convert.
|
|---|
| 1253 | * @param ppwszCommandLine Where to return the command line.
|
|---|
| 1254 | */
|
|---|
| 1255 | static int mkWinChildcareWorkerConvertQuotedArgvToCommandline(PWINCHILDCAREWORKER pWorker, char **papszArgs,
|
|---|
| 1256 | WCHAR **ppwszCommandLine)
|
|---|
| 1257 | {
|
|---|
| 1258 | WCHAR *pwszCmdLine;
|
|---|
| 1259 | WCHAR *pwszDst;
|
|---|
| 1260 |
|
|---|
| 1261 | /*
|
|---|
| 1262 | * Calc length the converted length.
|
|---|
| 1263 | */
|
|---|
| 1264 | unsigned cwcNeeded = 1;
|
|---|
| 1265 | unsigned i = 0;
|
|---|
| 1266 | const char *pszSrc;
|
|---|
| 1267 | while ((pszSrc = papszArgs[i]) != NULL)
|
|---|
| 1268 | {
|
|---|
| 1269 | int cwcThis = MultiByteToWideChar(CP_ACP, 0 /*fFlags*/, pszSrc, -1, NULL, 0);
|
|---|
| 1270 | if (cwcThis > 0 || *pszSrc == '\0')
|
|---|
| 1271 | cwcNeeded += cwcThis + 1;
|
|---|
| 1272 | else
|
|---|
| 1273 | {
|
|---|
| 1274 | DWORD dwErr = GetLastError();
|
|---|
| 1275 | MkWinChildError(pWorker, 1, _("MultiByteToWideChar failed to convert argv[%u] (%s): %u\n"), i, pszSrc, dwErr);
|
|---|
| 1276 | return dwErr;
|
|---|
| 1277 | }
|
|---|
| 1278 | i++;
|
|---|
| 1279 | }
|
|---|
| 1280 |
|
|---|
| 1281 | /*
|
|---|
| 1282 | * Allocate and do the conversion.
|
|---|
| 1283 | */
|
|---|
| 1284 | pwszCmdLine = pwszDst = (WCHAR *)xmalloc(cwcNeeded * sizeof(WCHAR));
|
|---|
| 1285 | i = 0;
|
|---|
| 1286 | while ((pszSrc = papszArgs[i]) != NULL)
|
|---|
| 1287 | {
|
|---|
| 1288 | int cwcThis;
|
|---|
| 1289 | if (i > 0)
|
|---|
| 1290 | {
|
|---|
| 1291 | *pwszDst++ = ' ';
|
|---|
| 1292 | cwcNeeded--;
|
|---|
| 1293 | }
|
|---|
| 1294 |
|
|---|
| 1295 | cwcThis = MultiByteToWideChar(CP_ACP, 0 /*fFlags*/, pszSrc, -1, pwszDst, cwcNeeded);
|
|---|
| 1296 | if (!cwcThis && *pszSrc != '\0')
|
|---|
| 1297 | {
|
|---|
| 1298 | DWORD dwErr = GetLastError();
|
|---|
| 1299 | MkWinChildError(pWorker, 1, _("MultiByteToWideChar failed to convert argv[%u] (%s): %u\n"), i, pszSrc, dwErr);
|
|---|
| 1300 | free(pwszCmdLine);
|
|---|
| 1301 | return dwErr;
|
|---|
| 1302 | }
|
|---|
| 1303 | if (cwcThis > 0 && pwszDst[cwcThis - 1] == '\0')
|
|---|
| 1304 | cwcThis--;
|
|---|
| 1305 | pwszDst += cwcThis;
|
|---|
| 1306 | cwcNeeded -= cwcThis;
|
|---|
| 1307 | i++;
|
|---|
| 1308 | }
|
|---|
| 1309 | *pwszDst++ = '\0';
|
|---|
| 1310 |
|
|---|
| 1311 | *ppwszCommandLine = pwszCmdLine;
|
|---|
| 1312 | return 0;
|
|---|
| 1313 | }
|
|---|
| 1314 |
|
|---|
| 1315 |
|
|---|
| 1316 | #define MKWCCWCMD_F_CYGWIN_SHELL 1
|
|---|
| 1317 | #define MKWCCWCMD_F_MKS_SHELL 2
|
|---|
| 1318 | #define MKWCCWCMD_F_HAVE_SH 4
|
|---|
| 1319 | #define MKWCCWCMD_F_HAVE_KASH_C 8 /**< kmk_ash -c "..." */
|
|---|
| 1320 |
|
|---|
| 1321 | /*
|
|---|
| 1322 | * @param pWorker The childcare worker if on one, otherwise NULL.
|
|---|
| 1323 | */
|
|---|
| 1324 | static int mkWinChildcareWorkerConvertCommandline(PWINCHILDCAREWORKER pWorker, char **papszArgs, unsigned fFlags,
|
|---|
| 1325 | WCHAR **ppwszCommandLine)
|
|---|
| 1326 | {
|
|---|
| 1327 | struct ARGINFO
|
|---|
| 1328 | {
|
|---|
| 1329 | size_t cchSrc;
|
|---|
| 1330 | size_t cwcDst; /**< converted size w/o terminator. */
|
|---|
| 1331 | size_t cwcDstExtra : 24; /**< Only set with fSlowly. */
|
|---|
| 1332 | size_t fSlowly : 1;
|
|---|
| 1333 | size_t fQuoteIt : 1;
|
|---|
| 1334 | size_t fEndSlashes : 1; /**< if escapes needed for trailing backslashes. */
|
|---|
| 1335 | size_t fExtraSpace : 1; /**< if kash -c "" needs an extra space before the quote. */
|
|---|
| 1336 | } *paArgInfo;
|
|---|
| 1337 | size_t cArgs;
|
|---|
| 1338 | size_t i;
|
|---|
| 1339 | size_t cwcNeeded;
|
|---|
| 1340 | WCHAR *pwszDst;
|
|---|
| 1341 | WCHAR *pwszCmdLine;
|
|---|
| 1342 |
|
|---|
| 1343 | /*
|
|---|
| 1344 | * Count them first so we can allocate an info array of the stack.
|
|---|
| 1345 | */
|
|---|
| 1346 | cArgs = 0;
|
|---|
| 1347 | while (papszArgs[cArgs] != NULL)
|
|---|
| 1348 | cArgs++;
|
|---|
| 1349 | paArgInfo = (struct ARGINFO *)alloca(sizeof(paArgInfo[0]) * cArgs);
|
|---|
| 1350 |
|
|---|
| 1351 | /*
|
|---|
| 1352 | * Preprocess them and calculate the exact command line length.
|
|---|
| 1353 | */
|
|---|
| 1354 | cwcNeeded = 1;
|
|---|
| 1355 | for (i = 0; i < cArgs; i++)
|
|---|
| 1356 | {
|
|---|
| 1357 | char *pszSrc = papszArgs[i];
|
|---|
| 1358 | size_t cchSrc = strlen(pszSrc);
|
|---|
| 1359 | paArgInfo[i].cchSrc = cchSrc;
|
|---|
| 1360 | if (cchSrc == 0)
|
|---|
| 1361 | {
|
|---|
| 1362 | /* empty needs quoting. */
|
|---|
| 1363 | paArgInfo[i].cwcDst = 2;
|
|---|
| 1364 | paArgInfo[i].cwcDstExtra = 0;
|
|---|
| 1365 | paArgInfo[i].fSlowly = 0;
|
|---|
| 1366 | paArgInfo[i].fQuoteIt = 1;
|
|---|
| 1367 | paArgInfo[i].fExtraSpace = 0;
|
|---|
| 1368 | paArgInfo[i].fEndSlashes = 0;
|
|---|
| 1369 | }
|
|---|
| 1370 | else
|
|---|
| 1371 | {
|
|---|
| 1372 | const char *pszSpace = memchr(pszSrc, ' ', cchSrc);
|
|---|
| 1373 | const char *pszTab = memchr(pszSrc, '\t', cchSrc);
|
|---|
| 1374 | const char *pszDQuote = memchr(pszSrc, '"', cchSrc);
|
|---|
| 1375 | const char *pszEscape = memchr(pszSrc, '\\', cchSrc);
|
|---|
| 1376 | int cwcDst = MultiByteToWideChar(CP_ACP, 0 /*fFlags*/, pszSrc, cchSrc + 1, NULL, 0);
|
|---|
| 1377 | if (cwcDst >= 0)
|
|---|
| 1378 | --cwcDst;
|
|---|
| 1379 | else
|
|---|
| 1380 | {
|
|---|
| 1381 | DWORD dwErr = GetLastError();
|
|---|
| 1382 | MkWinChildError(pWorker, 1, _("MultiByteToWideChar failed to convert argv[%u] (%s): %u\n"), i, pszSrc, dwErr);
|
|---|
| 1383 | return dwErr;
|
|---|
| 1384 | }
|
|---|
| 1385 | #if 0
|
|---|
| 1386 | if (!pszSpace && !pszTab && !pszDQuote && !pszEscape)
|
|---|
| 1387 | {
|
|---|
| 1388 | /* no special handling needed. */
|
|---|
| 1389 | paArgInfo[i].cwcDst = cwcDst;
|
|---|
| 1390 | paArgInfo[i].cwcDstExtra = 0;
|
|---|
| 1391 | paArgInfo[i].fSlowly = 0;
|
|---|
| 1392 | paArgInfo[i].fQuoteIt = 0;
|
|---|
| 1393 | paArgInfo[i].fExtraSpace = 0;
|
|---|
| 1394 | paArgInfo[i].fEndSlashes = 0;
|
|---|
| 1395 | }
|
|---|
| 1396 | else if (!pszDQuote && !pszEscape)
|
|---|
| 1397 | {
|
|---|
| 1398 | /* Just double quote it. */
|
|---|
| 1399 | paArgInfo[i].cwcDst = cwcDst + 2;
|
|---|
| 1400 | paArgInfo[i].cwcDstExtra = 0;
|
|---|
| 1401 | paArgInfo[i].fSlowly = 0;
|
|---|
| 1402 | paArgInfo[i].fQuoteIt = 1;
|
|---|
| 1403 | paArgInfo[i].fExtraSpace = 0;
|
|---|
| 1404 | paArgInfo[i].fEndSlashes = 0;
|
|---|
| 1405 | }
|
|---|
| 1406 | else
|
|---|
| 1407 | #endif
|
|---|
| 1408 | {
|
|---|
| 1409 | /* Complicated, need to scan the string to figure out what to do. */
|
|---|
| 1410 | size_t cwcDstExtra;
|
|---|
| 1411 | int cBackslashes;
|
|---|
| 1412 | char ch;
|
|---|
| 1413 |
|
|---|
| 1414 | paArgInfo[i].fQuoteIt = 0;
|
|---|
| 1415 | paArgInfo[i].fSlowly = 1;
|
|---|
| 1416 | paArgInfo[i].fExtraSpace = 0;
|
|---|
| 1417 | paArgInfo[i].fEndSlashes = 0;
|
|---|
| 1418 |
|
|---|
| 1419 | cwcDstExtra = 0;
|
|---|
| 1420 | cBackslashes = 0;
|
|---|
| 1421 | while ((ch = *pszSrc++) != '\0')
|
|---|
| 1422 | {
|
|---|
| 1423 | switch (ch)
|
|---|
| 1424 | {
|
|---|
| 1425 | default:
|
|---|
| 1426 | cBackslashes = 0;
|
|---|
| 1427 | break;
|
|---|
| 1428 |
|
|---|
| 1429 | case '\\':
|
|---|
| 1430 | cBackslashes++;
|
|---|
| 1431 | break;
|
|---|
| 1432 |
|
|---|
| 1433 | case '"':
|
|---|
| 1434 | if (fFlags & (MKWCCWCMD_F_CYGWIN_SHELL | MKWCCWCMD_F_MKS_SHELL))
|
|---|
| 1435 | cwcDstExtra += 1; /* just an extra '"' */
|
|---|
| 1436 | else
|
|---|
| 1437 | cwcDstExtra += 1 + cBackslashes; /* extra '\\' for the '"' and for each preceeding slash. */
|
|---|
| 1438 | cBackslashes = 0;
|
|---|
| 1439 | break;
|
|---|
| 1440 |
|
|---|
| 1441 | case ' ':
|
|---|
| 1442 | case '\t':
|
|---|
| 1443 | if (!paArgInfo[i].fQuoteIt)
|
|---|
| 1444 | {
|
|---|
| 1445 | paArgInfo[i].fQuoteIt = 1;
|
|---|
| 1446 | cwcDstExtra += 2;
|
|---|
| 1447 | }
|
|---|
| 1448 | cBackslashes = 0;
|
|---|
| 1449 | break;
|
|---|
| 1450 | }
|
|---|
| 1451 | }
|
|---|
| 1452 |
|
|---|
| 1453 | /* If we're quoting the argument and it ends with trailing '\\', it/they must be escaped. */
|
|---|
| 1454 | if ( cBackslashes > 0
|
|---|
| 1455 | && paArgInfo[i].fQuoteIt
|
|---|
| 1456 | && !(fFlags & (MKWCCWCMD_F_CYGWIN_SHELL | MKWCCWCMD_F_MKS_SHELL)))
|
|---|
| 1457 | {
|
|---|
| 1458 | cwcDstExtra += cBackslashes;
|
|---|
| 1459 | paArgInfo[i].fEndSlashes = 1;
|
|---|
| 1460 | }
|
|---|
| 1461 |
|
|---|
| 1462 | paArgInfo[i].cwcDst = cwcDst + cwcDstExtra;
|
|---|
| 1463 | paArgInfo[i].cwcDstExtra = cwcDstExtra;
|
|---|
| 1464 | }
|
|---|
| 1465 | }
|
|---|
| 1466 |
|
|---|
| 1467 | if ( (fFlags & MKWCCWCMD_F_HAVE_KASH_C)
|
|---|
| 1468 | && paArgInfo[i].fQuoteIt)
|
|---|
| 1469 | {
|
|---|
| 1470 | paArgInfo[i].fExtraSpace = 1;
|
|---|
| 1471 | paArgInfo[i].cwcDst++;
|
|---|
| 1472 | paArgInfo[i].cwcDstExtra++;
|
|---|
| 1473 | }
|
|---|
| 1474 |
|
|---|
| 1475 | cwcNeeded += (i != 0) + paArgInfo[i].cwcDst;
|
|---|
| 1476 | }
|
|---|
| 1477 |
|
|---|
| 1478 | /*
|
|---|
| 1479 | * Allocate the result buffer and do the actual conversion.
|
|---|
| 1480 | */
|
|---|
| 1481 | pwszDst = pwszCmdLine = (WCHAR *)xmalloc(sizeof(WCHAR) * cwcNeeded);
|
|---|
| 1482 | for (i = 0; i < cArgs; i++)
|
|---|
| 1483 | {
|
|---|
| 1484 | char *pszSrc = papszArgs[i];
|
|---|
| 1485 | size_t cwcDst = paArgInfo[i].cwcDst;
|
|---|
| 1486 |
|
|---|
| 1487 | if (i != 0)
|
|---|
| 1488 | *pwszDst++ = L' ';
|
|---|
| 1489 |
|
|---|
| 1490 | if (paArgInfo[i].fQuoteIt)
|
|---|
| 1491 | {
|
|---|
| 1492 | *pwszDst++ = L'"';
|
|---|
| 1493 | cwcDst -= 2;
|
|---|
| 1494 | }
|
|---|
| 1495 |
|
|---|
| 1496 | if (!paArgInfo[i].fSlowly)
|
|---|
| 1497 | {
|
|---|
| 1498 | int cwcDst2 = MultiByteToWideChar(CP_ACP, 0 /*fFlags*/, pszSrc, paArgInfo[i].cchSrc, pwszDst, cwcDst + 1);
|
|---|
| 1499 | assert(cwcDst2 >= 0);
|
|---|
| 1500 | pwszDst += cwcDst;
|
|---|
| 1501 | }
|
|---|
| 1502 | else
|
|---|
| 1503 | {
|
|---|
| 1504 | /* Do the conversion into the end of the output buffer, then move
|
|---|
| 1505 | it up to where it should be char by char. */
|
|---|
| 1506 | int cBackslashes;
|
|---|
| 1507 | size_t cwcLeft = paArgInfo[i].cwcDst - paArgInfo[i].cwcDstExtra;
|
|---|
| 1508 | WCHAR volatile *pwchSlowSrc = pwszDst + paArgInfo[i].cwcDstExtra;
|
|---|
| 1509 | WCHAR volatile *pwchSlowDst = pwszDst;
|
|---|
| 1510 | int cwcDst2 = MultiByteToWideChar(CP_ACP, 0 /*fFlags*/, pszSrc, paArgInfo[i].cchSrc,
|
|---|
| 1511 | (WCHAR *)pwchSlowSrc, cwcLeft + 1);
|
|---|
| 1512 | assert(cwcDst2 >= 0);
|
|---|
| 1513 |
|
|---|
| 1514 | cBackslashes = 0;
|
|---|
| 1515 | while (cwcLeft-- > 0)
|
|---|
| 1516 | {
|
|---|
| 1517 | WCHAR wcSrc = *pwchSlowSrc++;
|
|---|
| 1518 | if (wcSrc != L'\\' && wcSrc != L'"')
|
|---|
| 1519 | cBackslashes = 0;
|
|---|
| 1520 | else if (wcSrc == L'\\')
|
|---|
| 1521 | cBackslashes++;
|
|---|
| 1522 | else if ( (fFlags & (MKWCCWCMD_F_CYGWIN_SHELL | MKWCCWCMD_F_HAVE_SH))
|
|---|
| 1523 | == (MKWCCWCMD_F_CYGWIN_SHELL | MKWCCWCMD_F_HAVE_SH))
|
|---|
| 1524 | {
|
|---|
| 1525 | *pwchSlowDst++ = L'"'; /* cygwin: '"' instead of '\\', no escaped slashes. */
|
|---|
| 1526 | cBackslashes = 0;
|
|---|
| 1527 | }
|
|---|
| 1528 | else
|
|---|
| 1529 | {
|
|---|
| 1530 | if (!(fFlags & (MKWCCWCMD_F_CYGWIN_SHELL | MKWCCWCMD_F_MKS_SHELL)))
|
|---|
| 1531 | cBackslashes += 1; /* one extra escape the '"' and one for each preceeding slash. */
|
|---|
| 1532 | while (cBackslashes > 0)
|
|---|
| 1533 | {
|
|---|
| 1534 | *pwchSlowDst++ = L'\\';
|
|---|
| 1535 | cBackslashes--;
|
|---|
| 1536 | }
|
|---|
| 1537 | }
|
|---|
| 1538 | *pwchSlowDst++ = wcSrc;
|
|---|
| 1539 | assert((uintptr_t)pwchSlowDst <= (uintptr_t)pwchSlowSrc);
|
|---|
| 1540 | }
|
|---|
| 1541 |
|
|---|
| 1542 | if (paArgInfo[i].fEndSlashes)
|
|---|
| 1543 | while (cBackslashes-- > 0)
|
|---|
| 1544 | *pwchSlowDst++ = L'\\';
|
|---|
| 1545 |
|
|---|
| 1546 | pwszDst += cwcDst;
|
|---|
| 1547 | assert(pwszDst == (WCHAR *)pwchSlowDst);
|
|---|
| 1548 | }
|
|---|
| 1549 |
|
|---|
| 1550 | if (paArgInfo[i].fExtraSpace)
|
|---|
| 1551 | *pwszDst++ = L' ';
|
|---|
| 1552 | if (paArgInfo[i].fQuoteIt)
|
|---|
| 1553 | *pwszDst++ = L'"';
|
|---|
| 1554 | }
|
|---|
| 1555 | *pwszDst = L'\0';
|
|---|
| 1556 | *ppwszCommandLine = pwszCmdLine;
|
|---|
| 1557 | return 0;
|
|---|
| 1558 | }
|
|---|
| 1559 |
|
|---|
| 1560 | static int mkWinChildcareWorkerConvertCommandlineWithShell(PWINCHILDCAREWORKER pWorker, const WCHAR *pwszShell, char **papszArgs,
|
|---|
| 1561 | WCHAR **ppwszCommandLine)
|
|---|
| 1562 | {
|
|---|
| 1563 | MkWinChildError(pWorker, 1, "%s: not found!\n", papszArgs[0]);
|
|---|
| 1564 | //__debugbreak();
|
|---|
| 1565 | return ERROR_FILE_NOT_FOUND;
|
|---|
| 1566 | }
|
|---|
| 1567 |
|
|---|
| 1568 | /**
|
|---|
| 1569 | * Searches the environment block for the PATH variable.
|
|---|
| 1570 | *
|
|---|
| 1571 | * @returns Pointer to the path in the block or "." in pwszPathFallback.
|
|---|
| 1572 | * @param pwszzEnv The UTF-16 environment block to search.
|
|---|
| 1573 | * @param pwszPathFallback Fallback.
|
|---|
| 1574 | */
|
|---|
| 1575 | static const WCHAR *mkWinChildcareWorkerFindPathValue(const WCHAR *pwszzEnv, WCHAR pwszPathFallback[4])
|
|---|
| 1576 | {
|
|---|
| 1577 | while (*pwszzEnv)
|
|---|
| 1578 | {
|
|---|
| 1579 | size_t cwcVar = wcslen(pwszzEnv);
|
|---|
| 1580 | if (!IS_PATH_ENV_VAR(cwcVar, pwszzEnv))
|
|---|
| 1581 | pwszzEnv += cwcVar + 1;
|
|---|
| 1582 | else if (cwcVar > 5)
|
|---|
| 1583 | return &pwszzEnv[5];
|
|---|
| 1584 | else
|
|---|
| 1585 | break;
|
|---|
| 1586 | }
|
|---|
| 1587 | pwszPathFallback[0] = L'.';
|
|---|
| 1588 | pwszPathFallback[1] = L'\0';
|
|---|
| 1589 | return pwszPathFallback;
|
|---|
| 1590 | }
|
|---|
| 1591 |
|
|---|
| 1592 | /**
|
|---|
| 1593 | * Checks if we need to had this executable file to the shell.
|
|---|
| 1594 | *
|
|---|
| 1595 | * @returns TRUE if it's shell fooder, FALSE if we think windows can handle it.
|
|---|
| 1596 | * @param hFile Handle to the file in question
|
|---|
| 1597 | */
|
|---|
| 1598 | static BOOL mkWinChildcareWorkerCheckIfNeedShell(HANDLE hFile)
|
|---|
| 1599 | {
|
|---|
| 1600 | /*
|
|---|
| 1601 | * Read the first 512 bytes and check for an executable image header.
|
|---|
| 1602 | */
|
|---|
| 1603 | union
|
|---|
| 1604 | {
|
|---|
| 1605 | DWORD dwSignature;
|
|---|
| 1606 | WORD wSignature;
|
|---|
| 1607 | BYTE ab[128];
|
|---|
| 1608 | } uBuf;
|
|---|
| 1609 | DWORD cbRead;
|
|---|
| 1610 | uBuf.dwSignature = 0;
|
|---|
| 1611 | if ( ReadFile(hFile, &uBuf, sizeof(uBuf), &cbRead, NULL /*pOverlapped*/)
|
|---|
| 1612 | && cbRead == sizeof(uBuf))
|
|---|
| 1613 | {
|
|---|
| 1614 | if (uBuf.wSignature == IMAGE_DOS_SIGNATURE)
|
|---|
| 1615 | return FALSE;
|
|---|
| 1616 | if (uBuf.dwSignature == IMAGE_NT_SIGNATURE)
|
|---|
| 1617 | return FALSE;
|
|---|
| 1618 | if ( uBuf.wSignature == IMAGE_OS2_SIGNATURE /* NE */
|
|---|
| 1619 | || uBuf.wSignature == 0x5d4c /* LX */
|
|---|
| 1620 | || uBuf.wSignature == IMAGE_OS2_SIGNATURE_LE /* LE */)
|
|---|
| 1621 | return FALSE;
|
|---|
| 1622 | }
|
|---|
| 1623 | return TRUE;
|
|---|
| 1624 | }
|
|---|
| 1625 |
|
|---|
| 1626 | /**
|
|---|
| 1627 | * Checks if the image path looks like microsoft CL.exe.
|
|---|
| 1628 | *
|
|---|
| 1629 | * @returns TRUE / FALSE.
|
|---|
| 1630 | * @param pwszImagePath The executable image path to evalutate.
|
|---|
| 1631 | * @param cwcImagePath The length of the image path.
|
|---|
| 1632 | */
|
|---|
| 1633 | static BOOL mkWinChildIsProbableClExe(WCHAR const *pwszImagePath, size_t cwcImagePath)
|
|---|
| 1634 | {
|
|---|
| 1635 | assert(pwszImagePath[cwcImagePath] == '\0');
|
|---|
| 1636 | return cwcImagePath > 7
|
|---|
| 1637 | && (pwszImagePath[cwcImagePath - 7] == L'/' || pwszImagePath[cwcImagePath - 7] == L'\\')
|
|---|
| 1638 | && (pwszImagePath[cwcImagePath - 6] == L'c' || pwszImagePath[cwcImagePath - 6] == L'C')
|
|---|
| 1639 | && (pwszImagePath[cwcImagePath - 5] == L'l' || pwszImagePath[cwcImagePath - 5] == L'L')
|
|---|
| 1640 | && pwszImagePath[cwcImagePath - 4] == L'.'
|
|---|
| 1641 | && (pwszImagePath[cwcImagePath - 3] == L'e' || pwszImagePath[cwcImagePath - 3] == L'E')
|
|---|
| 1642 | && (pwszImagePath[cwcImagePath - 2] == L'x' || pwszImagePath[cwcImagePath - 2] == L'X')
|
|---|
| 1643 | && (pwszImagePath[cwcImagePath - 1] == L'e' || pwszImagePath[cwcImagePath - 1] == L'E');
|
|---|
| 1644 | }
|
|---|
| 1645 |
|
|---|
| 1646 | /**
|
|---|
| 1647 | * Temporary workaround for seemingly buggy kFsCache.c / dir-nt-bird.c.
|
|---|
| 1648 | *
|
|---|
| 1649 | * Something is not invalidated / updated correctly!
|
|---|
| 1650 | */
|
|---|
| 1651 | static BOOL mkWinChildcareWorkerIsRegularFileW(PWINCHILDCAREWORKER pWorker, wchar_t const *pwszPath)
|
|---|
| 1652 | {
|
|---|
| 1653 | BOOL fRet = FALSE;
|
|---|
| 1654 | #ifdef KMK
|
|---|
| 1655 | if (utf16_regular_file_p(pwszPath))
|
|---|
| 1656 | fRet = TRUE;
|
|---|
| 1657 | else
|
|---|
| 1658 | #endif
|
|---|
| 1659 | {
|
|---|
| 1660 | /* Don't believe the cache. */
|
|---|
| 1661 | DWORD dwAttr = GetFileAttributesW(pwszPath);
|
|---|
| 1662 | if (dwAttr != INVALID_FILE_ATTRIBUTES)
|
|---|
| 1663 | {
|
|---|
| 1664 | if (!(dwAttr & FILE_ATTRIBUTE_DIRECTORY))
|
|---|
| 1665 | {
|
|---|
| 1666 | #ifdef KMK
|
|---|
| 1667 | extern void dir_cache_invalid_volatile(void);
|
|---|
| 1668 | dir_cache_invalid_volatile();
|
|---|
| 1669 | if (utf16_regular_file_p(pwszPath))
|
|---|
| 1670 | MkWinChildError(pWorker, 1, "kFsCache was out of sync! pwszPath=%S\n", pwszPath);
|
|---|
| 1671 | else
|
|---|
| 1672 | {
|
|---|
| 1673 | dir_cache_invalid_all();
|
|---|
| 1674 | if (utf16_regular_file_p(pwszPath))
|
|---|
| 1675 | MkWinChildError(pWorker, 1, "kFsCache was really out of sync! pwszPath=%S\n", pwszPath);
|
|---|
| 1676 | else
|
|---|
| 1677 | MkWinChildError(pWorker, 1, "kFsCache is really out of sync!! pwszPath=%S\n", pwszPath);
|
|---|
| 1678 | }
|
|---|
| 1679 | #endif
|
|---|
| 1680 | fRet = TRUE;
|
|---|
| 1681 | }
|
|---|
| 1682 | }
|
|---|
| 1683 | }
|
|---|
| 1684 | return fRet;
|
|---|
| 1685 | }
|
|---|
| 1686 |
|
|---|
| 1687 |
|
|---|
| 1688 | /**
|
|---|
| 1689 | * Tries to locate the image file, searching the path and maybe falling back on
|
|---|
| 1690 | * the shell in case it knows more (think cygwin with its own view of the file
|
|---|
| 1691 | * system).
|
|---|
| 1692 | *
|
|---|
| 1693 | * This will also check for shell script, falling back on the shell too to
|
|---|
| 1694 | * handle those.
|
|---|
| 1695 | *
|
|---|
| 1696 | * @returns 0 on success, windows error code on failure.
|
|---|
| 1697 | * @param pWorker The childcare worker.
|
|---|
| 1698 | * @param pszArg0 The first argument.
|
|---|
| 1699 | * @param pwszSearchPath In case mkWinChildcareWorkerConvertEnvironment
|
|---|
| 1700 | * had a chance of locating the search path already.
|
|---|
| 1701 | * @param pwszzEnv The environment block, in case we need to look for
|
|---|
| 1702 | * the path.
|
|---|
| 1703 | * @param pszShell The shell.
|
|---|
| 1704 | * @param ppwszImagePath Where to return the pointer to the image path. This
|
|---|
| 1705 | * could be the shell.
|
|---|
| 1706 | * @param pfNeedShell Where to return shell vs direct execution indicator.
|
|---|
| 1707 | * @param pfProbableClExe Where to return an indicator of probably CL.EXE.
|
|---|
| 1708 | */
|
|---|
| 1709 | static int mkWinChildcareWorkerFindImage(PWINCHILDCAREWORKER pWorker, char const *pszArg0, WCHAR *pwszSearchPath,
|
|---|
| 1710 | WCHAR const *pwszzEnv, const char *pszShell,
|
|---|
| 1711 | WCHAR **ppwszImagePath, BOOL *pfNeedShell, BOOL *pfProbableClExe)
|
|---|
| 1712 | {
|
|---|
| 1713 | /** @todo Slap a cache on this code. We usually end up executing the same
|
|---|
| 1714 | * stuff over and over again (e.g. compilers, linkers, etc).
|
|---|
| 1715 | * Hitting the file system is slow on windows. */
|
|---|
| 1716 |
|
|---|
| 1717 | /*
|
|---|
| 1718 | * Convert pszArg0 to unicode so we can work directly on that.
|
|---|
| 1719 | */
|
|---|
| 1720 | WCHAR wszArg0[MKWINCHILD_MAX_PATH + 4]; /* +4 for painless '.exe' appending */
|
|---|
| 1721 | DWORD dwErr;
|
|---|
| 1722 | size_t cbArg0 = strlen(pszArg0) + 1;
|
|---|
| 1723 | int const cwcArg0 = MultiByteToWideChar(CP_ACP, 0 /*fFlags*/, pszArg0, cbArg0, wszArg0, MKWINCHILD_MAX_PATH);
|
|---|
| 1724 | if (cwcArg0 > 0)
|
|---|
| 1725 | {
|
|---|
| 1726 | HANDLE hFile = INVALID_HANDLE_VALUE;
|
|---|
| 1727 | WCHAR wszPathBuf[MKWINCHILD_MAX_PATH + 4]; /* +4 for painless '.exe' appending */
|
|---|
| 1728 | int cwc;
|
|---|
| 1729 |
|
|---|
| 1730 | /*
|
|---|
| 1731 | * If there isn't an .exe suffix, we may have to add one.
|
|---|
| 1732 | * Also we ASSUME that .exe suffixes means no hash bang detection needed.
|
|---|
| 1733 | */
|
|---|
| 1734 | int const fHasExeSuffix = cwcArg0 > CSTRLEN(".exe")
|
|---|
| 1735 | && wszArg0[cwcArg0 - 4] == '.'
|
|---|
| 1736 | && (wszArg0[cwcArg0 - 3] == L'e' || wszArg0[cwcArg0 - 3] == L'E')
|
|---|
| 1737 | && (wszArg0[cwcArg0 - 2] == L'x' || wszArg0[cwcArg0 - 2] == L'X')
|
|---|
| 1738 | && (wszArg0[cwcArg0 - 1] == L'e' || wszArg0[cwcArg0 - 1] == L'E');
|
|---|
| 1739 |
|
|---|
| 1740 | /*
|
|---|
| 1741 | * If there isn't any path specified, we need to search the PATH env.var.
|
|---|
| 1742 | */
|
|---|
| 1743 | int const fHasPath = wszArg0[1] == L':'
|
|---|
| 1744 | || wszArg0[0] == L'\\'
|
|---|
| 1745 | || wszArg0[0] == L'/'
|
|---|
| 1746 | || wmemchr(wszArg0, L'/', cwcArg0)
|
|---|
| 1747 | || wmemchr(wszArg0, L'\\', cwcArg0);
|
|---|
| 1748 |
|
|---|
| 1749 | /* Before we do anything, flip UNIX slashes to DOS ones. */
|
|---|
| 1750 | WCHAR *pwc = wszArg0;
|
|---|
| 1751 | while ((pwc = wcschr(pwc, L'/')) != NULL)
|
|---|
| 1752 | *pwc++ = L'\\';
|
|---|
| 1753 |
|
|---|
| 1754 | /* Don't need to set these all the time... */
|
|---|
| 1755 | *pfNeedShell = FALSE;
|
|---|
| 1756 | *pfProbableClExe = FALSE;
|
|---|
| 1757 |
|
|---|
| 1758 | /*
|
|---|
| 1759 | * If any kind of path is specified in arg0, we will not search the
|
|---|
| 1760 | * PATH env.var and can limit ourselves to maybe slapping a .exe on to it.
|
|---|
| 1761 | */
|
|---|
| 1762 | if (fHasPath)
|
|---|
| 1763 | {
|
|---|
| 1764 | /*
|
|---|
| 1765 | * If relative to a CWD, turn it into an absolute one.
|
|---|
| 1766 | */
|
|---|
| 1767 | unsigned cwcPath = cwcArg0;
|
|---|
| 1768 | WCHAR *pwszPath = wszArg0;
|
|---|
| 1769 | if ( *pwszPath != L'\\'
|
|---|
| 1770 | && (pwszPath[1] != ':' || pwszPath[2] != L'\\') )
|
|---|
| 1771 | {
|
|---|
| 1772 | DWORD cwcAbsPath = GetFullPathNameW(wszArg0, MKWINCHILD_MAX_PATH, wszPathBuf, NULL);
|
|---|
| 1773 | if (cwcAbsPath > 0)
|
|---|
| 1774 | {
|
|---|
| 1775 | cwcPath = cwcAbsPath + 1; /* include terminator, like MultiByteToWideChar does. */
|
|---|
| 1776 | pwszPath = wszPathBuf;
|
|---|
| 1777 | }
|
|---|
| 1778 | }
|
|---|
| 1779 |
|
|---|
| 1780 | /*
|
|---|
| 1781 | * Check with .exe suffix first.
|
|---|
| 1782 | * We don't open .exe files and look for hash bang stuff, we just
|
|---|
| 1783 | * assume they are executable images that CreateProcess can deal with.
|
|---|
| 1784 | */
|
|---|
| 1785 | if (!fHasExeSuffix)
|
|---|
| 1786 | {
|
|---|
| 1787 | pwszPath[cwcPath - 1] = L'.';
|
|---|
| 1788 | pwszPath[cwcPath ] = L'e';
|
|---|
| 1789 | pwszPath[cwcPath + 1] = L'x';
|
|---|
| 1790 | pwszPath[cwcPath + 2] = L'e';
|
|---|
| 1791 | pwszPath[cwcPath + 3] = L'\0';
|
|---|
| 1792 | }
|
|---|
| 1793 |
|
|---|
| 1794 | if (mkWinChildcareWorkerIsRegularFileW(pWorker, pwszPath))
|
|---|
| 1795 | {
|
|---|
| 1796 | *pfProbableClExe = mkWinChildIsProbableClExe(pwszPath, cwcPath + 4 - 1);
|
|---|
| 1797 | return mkWinChildDuplicateUtf16String(pwszPath, cwcPath + 4, ppwszImagePath);
|
|---|
| 1798 | }
|
|---|
| 1799 |
|
|---|
| 1800 | /*
|
|---|
| 1801 | * If no suffix was specified, try without .exe too, but now we need
|
|---|
| 1802 | * to see if it's for the shell or CreateProcess.
|
|---|
| 1803 | */
|
|---|
| 1804 | if (!fHasExeSuffix)
|
|---|
| 1805 | {
|
|---|
| 1806 | pwszPath[cwcPath - 1] = L'\0';
|
|---|
| 1807 | #ifdef KMK
|
|---|
| 1808 | if (mkWinChildcareWorkerIsRegularFileW(pWorker, pwszPath))
|
|---|
| 1809 | #endif
|
|---|
| 1810 | {
|
|---|
| 1811 | hFile = CreateFileW(pwszPath, GENERIC_READ, FILE_SHARE_READ | FILE_SHARE_DELETE | FILE_SHARE_WRITE,
|
|---|
| 1812 | NULL /*pSecAttr*/, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
|
|---|
| 1813 | if (hFile != INVALID_HANDLE_VALUE)
|
|---|
| 1814 | {
|
|---|
| 1815 | *pfNeedShell = mkWinChildcareWorkerCheckIfNeedShell(hFile);
|
|---|
| 1816 | CloseHandle(hFile);
|
|---|
| 1817 | if (!*pfNeedShell)
|
|---|
| 1818 | {
|
|---|
| 1819 | *pfProbableClExe = mkWinChildIsProbableClExe(pwszPath, cwcPath - 1);
|
|---|
| 1820 | return mkWinChildDuplicateUtf16String(pwszPath, cwcPath, ppwszImagePath);
|
|---|
| 1821 | }
|
|---|
| 1822 | }
|
|---|
| 1823 | }
|
|---|
| 1824 | }
|
|---|
| 1825 | }
|
|---|
| 1826 | /*
|
|---|
| 1827 | * No path, need to search the PATH env.var. for the executable, maybe
|
|---|
| 1828 | * adding an .exe suffix while do so if that is missing.
|
|---|
| 1829 | */
|
|---|
| 1830 | else
|
|---|
| 1831 | {
|
|---|
| 1832 | BOOL fSearchedCwd = FALSE;
|
|---|
| 1833 | WCHAR wszPathFallback[4];
|
|---|
| 1834 | if (!pwszSearchPath)
|
|---|
| 1835 | pwszSearchPath = (WCHAR *)mkWinChildcareWorkerFindPathValue(pwszzEnv, wszPathFallback);
|
|---|
| 1836 |
|
|---|
| 1837 | for (;;)
|
|---|
| 1838 | {
|
|---|
| 1839 | size_t cwcCombined;
|
|---|
| 1840 |
|
|---|
| 1841 | /*
|
|---|
| 1842 | * Find the end of the current PATH component.
|
|---|
| 1843 | */
|
|---|
| 1844 | size_t cwcSkip;
|
|---|
| 1845 | WCHAR wcEnd;
|
|---|
| 1846 | size_t cwcComponent = 0;
|
|---|
| 1847 | WCHAR wc;
|
|---|
| 1848 | while ((wc = pwszSearchPath[cwcComponent]) != L'\0')
|
|---|
| 1849 | {
|
|---|
| 1850 | if (wc != ';' && wc != ':')
|
|---|
| 1851 | { /* likely */ }
|
|---|
| 1852 | else if (wc == ';')
|
|---|
| 1853 | break;
|
|---|
| 1854 | else if (cwcComponent != (pwszSearchPath[cwcComponent] != L'"' ? 1 : 2))
|
|---|
| 1855 | break;
|
|---|
| 1856 | cwcComponent++;
|
|---|
| 1857 | }
|
|---|
| 1858 | wcEnd = wc;
|
|---|
| 1859 |
|
|---|
| 1860 | /* Trim leading spaces and double quotes. */
|
|---|
| 1861 | while ( cwcComponent > 0
|
|---|
| 1862 | && ((wc = *pwszSearchPath) == L'"' || wc == L' ' || wc == L'\t'))
|
|---|
| 1863 | {
|
|---|
| 1864 | pwszSearchPath++;
|
|---|
| 1865 | cwcComponent--;
|
|---|
| 1866 | }
|
|---|
| 1867 | cwcSkip = cwcComponent;
|
|---|
| 1868 |
|
|---|
| 1869 | /* Trim trailing spaces & double quotes. */
|
|---|
| 1870 | while ( cwcComponent > 0
|
|---|
| 1871 | && ((wc = pwszSearchPath[cwcComponent - 1]) == L'"' || wc == L' ' || wc == L'\t'))
|
|---|
| 1872 | cwcComponent--;
|
|---|
| 1873 |
|
|---|
| 1874 | /*
|
|---|
| 1875 | * Skip empty components. Join the component and the filename, making sure to
|
|---|
| 1876 | * resolve any CWD relative stuff first.
|
|---|
| 1877 | */
|
|---|
| 1878 | cwcCombined = cwcComponent + 1 + cwcArg0;
|
|---|
| 1879 | if (cwcComponent > 0 && cwcCombined <= MKWINCHILD_MAX_PATH)
|
|---|
| 1880 | {
|
|---|
| 1881 | /* Copy the component into wszPathBuf, maybe abspath'ing it. */
|
|---|
| 1882 | DWORD cwcAbsPath = 0;
|
|---|
| 1883 | if ( *pwszSearchPath != L'\\'
|
|---|
| 1884 | && (pwszSearchPath[1] != ':' || pwszSearchPath[2] != L'\\') )
|
|---|
| 1885 | {
|
|---|
| 1886 | /* To save an extra buffer + copying, we'll temporarily modify the PATH
|
|---|
| 1887 | value in our converted UTF-16 environment block. */
|
|---|
| 1888 | WCHAR const wcSaved = pwszSearchPath[cwcComponent];
|
|---|
| 1889 | pwszSearchPath[cwcComponent] = L'\0';
|
|---|
| 1890 | cwcAbsPath = GetFullPathNameW(pwszSearchPath, MKWINCHILD_MAX_PATH, wszPathBuf, NULL);
|
|---|
| 1891 | pwszSearchPath[cwcComponent] = wcSaved;
|
|---|
| 1892 | if (cwcAbsPath > 0 && cwcAbsPath + 1 + cwcArg0 <= MKWINCHILD_MAX_PATH)
|
|---|
| 1893 | cwcCombined = cwcAbsPath + 1 + cwcArg0;
|
|---|
| 1894 | else
|
|---|
| 1895 | cwcAbsPath = 0;
|
|---|
| 1896 | }
|
|---|
| 1897 | if (cwcAbsPath == 0)
|
|---|
| 1898 | {
|
|---|
| 1899 | memcpy(wszPathBuf, pwszSearchPath, cwcComponent * sizeof(WCHAR));
|
|---|
| 1900 | cwcAbsPath = cwcComponent;
|
|---|
| 1901 | }
|
|---|
| 1902 |
|
|---|
| 1903 | /* Append the filename. */
|
|---|
| 1904 | if ((wc = wszPathBuf[cwcAbsPath - 1]) == L'\\' || wc == L'/' || wc == L':')
|
|---|
| 1905 | {
|
|---|
| 1906 | memcpy(&wszPathBuf[cwcAbsPath], wszArg0, cwcArg0 * sizeof(WCHAR));
|
|---|
| 1907 | cwcCombined--;
|
|---|
| 1908 | }
|
|---|
| 1909 | else
|
|---|
| 1910 | {
|
|---|
| 1911 | wszPathBuf[cwcAbsPath] = L'\\';
|
|---|
| 1912 | memcpy(&wszPathBuf[cwcAbsPath + 1], wszArg0, cwcArg0 * sizeof(WCHAR));
|
|---|
| 1913 | }
|
|---|
| 1914 | assert(wszPathBuf[cwcCombined - 1] == L'\0');
|
|---|
| 1915 |
|
|---|
| 1916 | /* DOS slash conversion */
|
|---|
| 1917 | pwc = wszPathBuf;
|
|---|
| 1918 | while ((pwc = wcschr(pwc, L'/')) != NULL)
|
|---|
| 1919 | *pwc++ = L'\\';
|
|---|
| 1920 |
|
|---|
| 1921 | /*
|
|---|
| 1922 | * Search with exe suffix first.
|
|---|
| 1923 | */
|
|---|
| 1924 | if (!fHasExeSuffix)
|
|---|
| 1925 | {
|
|---|
| 1926 | wszPathBuf[cwcCombined - 1] = L'.';
|
|---|
| 1927 | wszPathBuf[cwcCombined ] = L'e';
|
|---|
| 1928 | wszPathBuf[cwcCombined + 1] = L'x';
|
|---|
| 1929 | wszPathBuf[cwcCombined + 2] = L'e';
|
|---|
| 1930 | wszPathBuf[cwcCombined + 3] = L'\0';
|
|---|
| 1931 | }
|
|---|
| 1932 | if (mkWinChildcareWorkerIsRegularFileW(pWorker, wszPathBuf))
|
|---|
| 1933 | {
|
|---|
| 1934 | *pfProbableClExe = mkWinChildIsProbableClExe(wszPathBuf, cwcCombined + (fHasExeSuffix ? 0 : 4) - 1);
|
|---|
| 1935 | return mkWinChildDuplicateUtf16String(wszPathBuf, cwcCombined + (fHasExeSuffix ? 0 : 4), ppwszImagePath);
|
|---|
| 1936 | }
|
|---|
| 1937 | if (!fHasExeSuffix)
|
|---|
| 1938 | {
|
|---|
| 1939 | wszPathBuf[cwcCombined - 1] = L'\0';
|
|---|
| 1940 | #ifdef KMK
|
|---|
| 1941 | if (mkWinChildcareWorkerIsRegularFileW(pWorker, wszPathBuf))
|
|---|
| 1942 | #endif
|
|---|
| 1943 | {
|
|---|
| 1944 | /*
|
|---|
| 1945 | * Check if the file exists w/o the added '.exe' suffix. If it does,
|
|---|
| 1946 | * we need to check if we can pass it to CreateProcess or need the shell.
|
|---|
| 1947 | */
|
|---|
| 1948 | hFile = CreateFileW(wszPathBuf, GENERIC_READ, FILE_SHARE_READ | FILE_SHARE_DELETE | FILE_SHARE_WRITE,
|
|---|
| 1949 | NULL /*pSecAttr*/, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
|
|---|
| 1950 | if (hFile != INVALID_HANDLE_VALUE)
|
|---|
| 1951 | {
|
|---|
| 1952 | *pfNeedShell = mkWinChildcareWorkerCheckIfNeedShell(hFile);
|
|---|
| 1953 | CloseHandle(hFile);
|
|---|
| 1954 | if (!*pfNeedShell)
|
|---|
| 1955 | {
|
|---|
| 1956 | *pfProbableClExe = mkWinChildIsProbableClExe(wszPathBuf, cwcCombined - 1);
|
|---|
| 1957 | return mkWinChildDuplicateUtf16String(wszPathBuf, cwcCombined, ppwszImagePath);
|
|---|
| 1958 | }
|
|---|
| 1959 | break;
|
|---|
| 1960 | }
|
|---|
| 1961 | }
|
|---|
| 1962 | }
|
|---|
| 1963 | }
|
|---|
| 1964 |
|
|---|
| 1965 | /*
|
|---|
| 1966 | * Advance to the next component.
|
|---|
| 1967 | */
|
|---|
| 1968 | if (wcEnd != '\0')
|
|---|
| 1969 | pwszSearchPath += cwcSkip + 1;
|
|---|
| 1970 | else if (fSearchedCwd)
|
|---|
| 1971 | break;
|
|---|
| 1972 | else
|
|---|
| 1973 | {
|
|---|
| 1974 | fSearchedCwd = TRUE;
|
|---|
| 1975 | wszPathFallback[0] = L'.';
|
|---|
| 1976 | wszPathFallback[1] = L'\0';
|
|---|
| 1977 | pwszSearchPath = wszPathFallback;
|
|---|
| 1978 | }
|
|---|
| 1979 | }
|
|---|
| 1980 | }
|
|---|
| 1981 |
|
|---|
| 1982 | /*
|
|---|
| 1983 | * We need the shell. It will take care of finding/reporting missing
|
|---|
| 1984 | * image files and such.
|
|---|
| 1985 | */
|
|---|
| 1986 | *pfNeedShell = TRUE;
|
|---|
| 1987 | if (pszShell)
|
|---|
| 1988 | {
|
|---|
| 1989 | cwc = MultiByteToWideChar(CP_ACP, 0 /*fFlags*/, pszShell, strlen(pszShell) + 1, wszPathBuf, MKWINCHILD_MAX_PATH);
|
|---|
| 1990 | if (cwc > 0)
|
|---|
| 1991 | return mkWinChildDuplicateUtf16String(wszPathBuf, cwc, ppwszImagePath);
|
|---|
| 1992 | dwErr = GetLastError();
|
|---|
| 1993 | MkWinChildError(pWorker, 1, _("MultiByteToWideChar failed to convert shell (%s): %u\n"), pszShell, dwErr);
|
|---|
| 1994 | }
|
|---|
| 1995 | else
|
|---|
| 1996 | {
|
|---|
| 1997 | MkWinChildError(pWorker, 1, "%s: not found!\n", pszArg0);
|
|---|
| 1998 | dwErr = ERROR_FILE_NOT_FOUND;
|
|---|
| 1999 | }
|
|---|
| 2000 | }
|
|---|
| 2001 | else
|
|---|
| 2002 | {
|
|---|
| 2003 | dwErr = GetLastError();
|
|---|
| 2004 | MkWinChildError(pWorker, 1, _("MultiByteToWideChar failed to convert argv[0] (%s): %u\n"), pszArg0, dwErr);
|
|---|
| 2005 | }
|
|---|
| 2006 | return dwErr == ERROR_INSUFFICIENT_BUFFER ? ERROR_FILENAME_EXCED_RANGE : dwErr;
|
|---|
| 2007 | }
|
|---|
| 2008 |
|
|---|
| 2009 | /**
|
|---|
| 2010 | * Creates the environment block.
|
|---|
| 2011 | *
|
|---|
| 2012 | * @returns 0 on success, windows error code on failure.
|
|---|
| 2013 | * @param pWorker The childcare worker if on one, otherwise NULL.
|
|---|
| 2014 | * @param papszEnv The environment vector to convert.
|
|---|
| 2015 | * @param cbEnvStrings The size of the environment strings, iff they are
|
|---|
| 2016 | * sequential in a block. Otherwise, zero.
|
|---|
| 2017 | * @param ppwszEnv Where to return the pointer to the environment
|
|---|
| 2018 | * block.
|
|---|
| 2019 | * @param ppwszSearchPath Where to return the pointer to the path value
|
|---|
| 2020 | * within the environment block. This will not be set
|
|---|
| 2021 | * if cbEnvStrings is non-zero, more efficient to let
|
|---|
| 2022 | * mkWinChildcareWorkerFindImage() search when needed.
|
|---|
| 2023 | */
|
|---|
| 2024 | static int mkWinChildcareWorkerConvertEnvironment(PWINCHILDCAREWORKER pWorker, char **papszEnv, size_t cbEnvStrings,
|
|---|
| 2025 | WCHAR **ppwszEnv, WCHAR const **ppwszSearchPath)
|
|---|
| 2026 | {
|
|---|
| 2027 | DWORD dwErr;
|
|---|
| 2028 | int cwcRc;
|
|---|
| 2029 | int cwcDst;
|
|---|
| 2030 | WCHAR *pwszzDst;
|
|---|
| 2031 |
|
|---|
| 2032 | *ppwszSearchPath = NULL;
|
|---|
| 2033 |
|
|---|
| 2034 | /*
|
|---|
| 2035 | * We've got a little optimization here with help from mkWinChildCopyStringArray.
|
|---|
| 2036 | */
|
|---|
| 2037 | if (cbEnvStrings)
|
|---|
| 2038 | {
|
|---|
| 2039 | cwcDst = cbEnvStrings + 32;
|
|---|
| 2040 | pwszzDst = (WCHAR *)xmalloc(cwcDst * sizeof(WCHAR));
|
|---|
| 2041 | cwcRc = MultiByteToWideChar(CP_ACP, 0 /*fFlags*/, papszEnv[0], cbEnvStrings, pwszzDst, cwcDst);
|
|---|
| 2042 | if (cwcRc != 0)
|
|---|
| 2043 | {
|
|---|
| 2044 | *ppwszEnv = pwszzDst;
|
|---|
| 2045 | return 0;
|
|---|
| 2046 | }
|
|---|
| 2047 |
|
|---|
| 2048 | /* Resize the allocation and try again. */
|
|---|
| 2049 | dwErr = GetLastError();
|
|---|
| 2050 | if (dwErr == ERROR_INSUFFICIENT_BUFFER)
|
|---|
| 2051 | {
|
|---|
| 2052 | cwcRc = MultiByteToWideChar(CP_ACP, 0 /*fFlags*/, papszEnv[0], cbEnvStrings, NULL, 0);
|
|---|
| 2053 | if (cwcRc > 0)
|
|---|
| 2054 | cwcDst = cwcRc + 32;
|
|---|
| 2055 | else
|
|---|
| 2056 | cwcDst *= 2;
|
|---|
| 2057 | pwszzDst = (WCHAR *)xrealloc(pwszzDst, cwcDst);
|
|---|
| 2058 | cwcRc = MultiByteToWideChar(CP_ACP, 0 /*fFlags*/, papszEnv[0], cbEnvStrings, pwszzDst, cwcDst);
|
|---|
| 2059 | if (cwcRc != 0)
|
|---|
| 2060 | {
|
|---|
| 2061 | *ppwszEnv = pwszzDst;
|
|---|
| 2062 | return 0;
|
|---|
| 2063 | }
|
|---|
| 2064 | dwErr = GetLastError();
|
|---|
| 2065 | }
|
|---|
| 2066 | MkWinChildError(pWorker, 1, _("MultiByteToWideChar failed to convert environment block: %u\n"), dwErr);
|
|---|
| 2067 | }
|
|---|
| 2068 | /*
|
|---|
| 2069 | * Need to convert it string by string.
|
|---|
| 2070 | */
|
|---|
| 2071 | else
|
|---|
| 2072 | {
|
|---|
| 2073 | size_t offPathValue = ~(size_t)0;
|
|---|
| 2074 | size_t offDst;
|
|---|
| 2075 |
|
|---|
| 2076 | /*
|
|---|
| 2077 | * Estimate the size first.
|
|---|
| 2078 | */
|
|---|
| 2079 | size_t cEnvVars;
|
|---|
| 2080 | size_t cwcDst = 32;
|
|---|
| 2081 | size_t iVar = 0;
|
|---|
| 2082 | const char *pszSrc;
|
|---|
| 2083 | while ((pszSrc = papszEnv[iVar]) != NULL)
|
|---|
| 2084 | {
|
|---|
| 2085 | cwcDst += strlen(pszSrc) + 1;
|
|---|
| 2086 | iVar++;
|
|---|
| 2087 | }
|
|---|
| 2088 | cEnvVars = iVar;
|
|---|
| 2089 |
|
|---|
| 2090 | /* Allocate estimated WCHARs and convert the variables one by one, reallocating
|
|---|
| 2091 | the block as needed. */
|
|---|
| 2092 | pwszzDst = (WCHAR *)xmalloc(cwcDst * sizeof(WCHAR));
|
|---|
| 2093 | cwcDst--; /* save one wchar for the terminating empty string. */
|
|---|
| 2094 | offDst = 0;
|
|---|
| 2095 | for (iVar = 0; iVar < cEnvVars; iVar++)
|
|---|
| 2096 | {
|
|---|
| 2097 | size_t cwcLeft = cwcDst - offDst;
|
|---|
| 2098 | size_t const cbSrc = strlen(pszSrc = papszEnv[iVar]) + 1;
|
|---|
| 2099 | assert(cwcDst >= offDst);
|
|---|
| 2100 |
|
|---|
| 2101 |
|
|---|
| 2102 | cwcRc = MultiByteToWideChar(CP_ACP, 0 /*fFlags*/, pszSrc, cbSrc, &pwszzDst[offDst], cwcLeft);
|
|---|
| 2103 | if (cwcRc > 0)
|
|---|
| 2104 | { /* likely */ }
|
|---|
| 2105 | else
|
|---|
| 2106 | {
|
|---|
| 2107 | dwErr = GetLastError();
|
|---|
| 2108 | if (dwErr == ERROR_INSUFFICIENT_BUFFER)
|
|---|
| 2109 | {
|
|---|
| 2110 | /* Need more space. So, calc exacly how much and resize the block accordingly. */
|
|---|
| 2111 | size_t cbSrc2 = cbSrc;
|
|---|
| 2112 | size_t iVar2 = iVar;
|
|---|
| 2113 | cwcLeft = 1;
|
|---|
| 2114 | for (;;)
|
|---|
| 2115 | {
|
|---|
| 2116 | size_t cwcRc2 = MultiByteToWideChar(CP_ACP, 0 /*fFlags*/, pszSrc, cbSrc, NULL, 0);
|
|---|
| 2117 | if (cwcRc2 > 0)
|
|---|
| 2118 | cwcLeft += cwcRc2;
|
|---|
| 2119 | else
|
|---|
| 2120 | cwcLeft += cbSrc * 4;
|
|---|
| 2121 |
|
|---|
| 2122 | /* advance */
|
|---|
| 2123 | iVar2++;
|
|---|
| 2124 | if (iVar2 >= cEnvVars)
|
|---|
| 2125 | break;
|
|---|
| 2126 | pszSrc = papszEnv[iVar2];
|
|---|
| 2127 | cbSrc2 = strlen(pszSrc) + 1;
|
|---|
| 2128 | }
|
|---|
| 2129 | pszSrc = papszEnv[iVar];
|
|---|
| 2130 |
|
|---|
| 2131 | /* Grow the allocation and repeat the conversion. */
|
|---|
| 2132 | if (offDst + cwcLeft > cwcDst + 1)
|
|---|
| 2133 | {
|
|---|
| 2134 | cwcDst = offDst + cwcLeft;
|
|---|
| 2135 | pwszzDst = (WCHAR *)xrealloc(pwszzDst, cwcDst * sizeof(WCHAR));
|
|---|
| 2136 | cwcDst--; /* save one wchar for the terminating empty string. */
|
|---|
| 2137 | cwcRc = MultiByteToWideChar(CP_ACP, 0 /*fFlags*/, pszSrc, cbSrc, &pwszzDst[offDst], cwcLeft - 1);
|
|---|
| 2138 | if (cwcRc <= 0)
|
|---|
| 2139 | dwErr = GetLastError();
|
|---|
| 2140 | }
|
|---|
| 2141 | }
|
|---|
| 2142 | if (cwcRc <= 0)
|
|---|
| 2143 | {
|
|---|
| 2144 | MkWinChildError(pWorker, 1, _("MultiByteToWideChar failed to convert environment string #%u (%s): %u\n"),
|
|---|
| 2145 | iVar, pszSrc, dwErr);
|
|---|
| 2146 | free(pwszzDst);
|
|---|
| 2147 | return dwErr;
|
|---|
| 2148 | }
|
|---|
| 2149 | }
|
|---|
| 2150 |
|
|---|
| 2151 | /* Look for the PATH. */
|
|---|
| 2152 | if ( offPathValue == ~(size_t)0
|
|---|
| 2153 | && IS_PATH_ENV_VAR(cwcRc, &pwszzDst[offDst]) )
|
|---|
| 2154 | offPathValue = offDst + 4 + 1;
|
|---|
| 2155 |
|
|---|
| 2156 | /* Advance. */
|
|---|
| 2157 | offDst += cwcRc;
|
|---|
| 2158 | }
|
|---|
| 2159 | pwszzDst[offDst++] = '\0';
|
|---|
| 2160 |
|
|---|
| 2161 | if (offPathValue != ~(size_t)0)
|
|---|
| 2162 | *ppwszSearchPath = &pwszzDst[offPathValue];
|
|---|
| 2163 | *ppwszEnv = pwszzDst;
|
|---|
| 2164 | return 0;
|
|---|
| 2165 | }
|
|---|
| 2166 | free(pwszzDst);
|
|---|
| 2167 | return dwErr;
|
|---|
| 2168 | }
|
|---|
| 2169 |
|
|---|
| 2170 | /**
|
|---|
| 2171 | * Childcare worker: handle regular process.
|
|---|
| 2172 | *
|
|---|
| 2173 | * @param pWorker The worker.
|
|---|
| 2174 | * @param pChild The kSubmit child.
|
|---|
| 2175 | */
|
|---|
| 2176 | static void mkWinChildcareWorkerThreadHandleProcess(PWINCHILDCAREWORKER pWorker, PWINCHILD pChild)
|
|---|
| 2177 | {
|
|---|
| 2178 | WCHAR *pwszSearchPath = NULL;
|
|---|
| 2179 | WCHAR *pwszzEnvironment = NULL;
|
|---|
| 2180 | WCHAR *pwszCommandLine = NULL;
|
|---|
| 2181 | WCHAR *pwszImageName = NULL;
|
|---|
| 2182 | BOOL fNeedShell = FALSE;
|
|---|
| 2183 | BOOL fProbableClExe = FALSE;
|
|---|
| 2184 | int rc;
|
|---|
| 2185 |
|
|---|
| 2186 | /*
|
|---|
| 2187 | * First we convert the environment so we get the PATH we need to
|
|---|
| 2188 | * search for the executable.
|
|---|
| 2189 | */
|
|---|
| 2190 | rc = mkWinChildcareWorkerConvertEnvironment(pWorker, pChild->u.Process.papszEnv ? pChild->u.Process.papszEnv : environ,
|
|---|
| 2191 | pChild->u.Process.cbEnvStrings,
|
|---|
| 2192 | &pwszzEnvironment, &pwszSearchPath);
|
|---|
| 2193 | /*
|
|---|
| 2194 | * Find the executable and maybe checking if it's a shell script, then
|
|---|
| 2195 | * convert it to a command line.
|
|---|
| 2196 | */
|
|---|
| 2197 | if (rc == 0)
|
|---|
| 2198 | rc = mkWinChildcareWorkerFindImage(pWorker, pChild->u.Process.papszArgs[0], pwszSearchPath, pwszzEnvironment,
|
|---|
| 2199 | pChild->u.Process.pszShell, &pwszImageName, &fNeedShell, &pChild->fProbableClExe);
|
|---|
| 2200 | if (rc == 0)
|
|---|
| 2201 | {
|
|---|
| 2202 | if (!fNeedShell)
|
|---|
| 2203 | rc = mkWinChildcareWorkerConvertCommandline(pWorker, pChild->u.Process.papszArgs, 0 /*fFlags*/, &pwszCommandLine);
|
|---|
| 2204 | else
|
|---|
| 2205 | rc = mkWinChildcareWorkerConvertCommandlineWithShell(pWorker, pwszImageName, pChild->u.Process.papszArgs,
|
|---|
| 2206 | &pwszCommandLine);
|
|---|
| 2207 |
|
|---|
| 2208 | /*
|
|---|
| 2209 | * Create the child process.
|
|---|
| 2210 | */
|
|---|
| 2211 | if (rc == 0)
|
|---|
| 2212 | {
|
|---|
| 2213 | BOOL afReplace[3] = { FALSE, pChild->u.Process.hStdOut != INVALID_HANDLE_VALUE, pChild->u.Process.hStdErr != INVALID_HANDLE_VALUE };
|
|---|
| 2214 | HANDLE ahChild[3] = { INVALID_HANDLE_VALUE, pChild->u.Process.hStdOut, pChild->u.Process.hStdErr };
|
|---|
| 2215 | rc = mkWinChildcareWorkerCreateProcess(pWorker, pwszImageName, pwszCommandLine, pwszzEnvironment,
|
|---|
| 2216 | NULL /*pwszCwd*/, afReplace, ahChild, pChild->u.Process.fCatchOutput,
|
|---|
| 2217 | &pChild->u.Process.hProcess);
|
|---|
| 2218 | mkWinChildcareWorkerCloseStandardHandles(pChild);
|
|---|
| 2219 | if (rc == 0)
|
|---|
| 2220 | {
|
|---|
| 2221 | /*
|
|---|
| 2222 | * Wait for the child to complete.
|
|---|
| 2223 | */
|
|---|
| 2224 | mkWinChildcareWorkerWaitForProcess(pWorker, pChild, pChild->u.Process.hProcess, pwszImageName,
|
|---|
| 2225 | pChild->u.Process.fCatchOutput);
|
|---|
| 2226 | }
|
|---|
| 2227 | else
|
|---|
| 2228 | pChild->iExitCode = rc;
|
|---|
| 2229 | }
|
|---|
| 2230 | else
|
|---|
| 2231 | pChild->iExitCode = rc;
|
|---|
| 2232 | }
|
|---|
| 2233 | else
|
|---|
| 2234 | pChild->iExitCode = rc;
|
|---|
| 2235 | free(pwszCommandLine);
|
|---|
| 2236 | free(pwszImageName);
|
|---|
| 2237 | free(pwszzEnvironment);
|
|---|
| 2238 |
|
|---|
| 2239 | /* In case we failed, we must make sure the child end of pipes
|
|---|
| 2240 | used by $(shell no_such_command.exe) are closed, otherwise
|
|---|
| 2241 | the main thread will be stuck reading the parent end. */
|
|---|
| 2242 | mkWinChildcareWorkerCloseStandardHandles(pChild);
|
|---|
| 2243 | }
|
|---|
| 2244 |
|
|---|
| 2245 | #ifdef KMK
|
|---|
| 2246 |
|
|---|
| 2247 | /**
|
|---|
| 2248 | * Childcare worker: handle builtin command.
|
|---|
| 2249 | *
|
|---|
| 2250 | * @param pWorker The worker.
|
|---|
| 2251 | * @param pChild The kSubmit child.
|
|---|
| 2252 | */
|
|---|
| 2253 | static void mkWinChildcareWorkerThreadHandleBuiltIn(PWINCHILDCAREWORKER pWorker, PWINCHILD pChild)
|
|---|
| 2254 | {
|
|---|
| 2255 | PCKMKBUILTINENTRY pBuiltIn = pChild->u.BuiltIn.pBuiltIn;
|
|---|
| 2256 | KMKBUILTINCTX Ctx =
|
|---|
| 2257 | {
|
|---|
| 2258 | pBuiltIn->uName.s.sz,
|
|---|
| 2259 | pChild->pMkChild ? &pChild->pMkChild->output : NULL,
|
|---|
| 2260 | pWorker,
|
|---|
| 2261 | };
|
|---|
| 2262 | if (pBuiltIn->uFnSignature == FN_SIG_MAIN)
|
|---|
| 2263 | pChild->iExitCode = pBuiltIn->u.pfnMain(pChild->u.BuiltIn.cArgs, pChild->u.BuiltIn.papszArgs,
|
|---|
| 2264 | pChild->u.BuiltIn.papszEnv, &Ctx);
|
|---|
| 2265 | else if (pBuiltIn->uFnSignature == FN_SIG_MAIN_SPAWNS)
|
|---|
| 2266 | pChild->iExitCode = pBuiltIn->u.pfnMainSpawns(pChild->u.BuiltIn.cArgs, pChild->u.BuiltIn.papszArgs,
|
|---|
| 2267 | pChild->u.BuiltIn.papszEnv, &Ctx, pChild->pMkChild, NULL /*pPid*/);
|
|---|
| 2268 | else
|
|---|
| 2269 | {
|
|---|
| 2270 | assert(0);
|
|---|
| 2271 | pChild->iExitCode = 98;
|
|---|
| 2272 | }
|
|---|
| 2273 | }
|
|---|
| 2274 |
|
|---|
| 2275 | /**
|
|---|
| 2276 | * Childcare worker: handle append write-out.
|
|---|
| 2277 | *
|
|---|
| 2278 | * @param pWorker The worker.
|
|---|
| 2279 | * @param pChild The kSubmit child.
|
|---|
| 2280 | */
|
|---|
| 2281 | static void mkWinChildcareWorkerThreadHandleAppend(PWINCHILDCAREWORKER pWorker, PWINCHILD pChild)
|
|---|
| 2282 | {
|
|---|
| 2283 | int fd = open(pChild->u.Append.pszFilename,
|
|---|
| 2284 | pChild->u.Append.fTruncate
|
|---|
| 2285 | ? O_WRONLY | O_TRUNC | O_CREAT | _O_NOINHERIT | _O_BINARY
|
|---|
| 2286 | : O_WRONLY | O_APPEND | O_CREAT | _O_NOINHERIT | _O_BINARY,
|
|---|
| 2287 | 0666);
|
|---|
| 2288 | if (fd >= 0)
|
|---|
| 2289 | {
|
|---|
| 2290 | ssize_t cbWritten = write(fd, pChild->u.Append.pszAppend, pChild->u.Append.cbAppend);
|
|---|
| 2291 | if (cbWritten == (ssize_t)pChild->u.Append.cbAppend)
|
|---|
| 2292 | {
|
|---|
| 2293 | if (close(fd) >= 0)
|
|---|
| 2294 | {
|
|---|
| 2295 | pChild->iExitCode = 0;
|
|---|
| 2296 | return;
|
|---|
| 2297 | }
|
|---|
| 2298 | MkWinChildError(pWorker, 1, "kmk_builtin_append: close failed on '%s': %u (%s)\n",
|
|---|
| 2299 | pChild->u.Append.pszFilename, errno, strerror(errno));
|
|---|
| 2300 | }
|
|---|
| 2301 | else
|
|---|
| 2302 | MkWinChildError(pWorker, 1, "kmk_builtin_append: error writing %lu bytes to on '%s': %u (%s)\n",
|
|---|
| 2303 | pChild->u.Append.cbAppend, pChild->u.Append.pszFilename, errno, strerror(errno));
|
|---|
| 2304 | close(fd);
|
|---|
| 2305 | }
|
|---|
| 2306 | else
|
|---|
| 2307 | MkWinChildError(pWorker, 1, "kmk_builtin_append: error opening '%s': %u (%s)\n",
|
|---|
| 2308 | pChild->u.Append.pszFilename, errno, strerror(errno));
|
|---|
| 2309 | pChild->iExitCode = 1;
|
|---|
| 2310 | }
|
|---|
| 2311 |
|
|---|
| 2312 | /**
|
|---|
| 2313 | * Childcare worker: handle kSubmit job.
|
|---|
| 2314 | *
|
|---|
| 2315 | * @param pWorker The worker.
|
|---|
| 2316 | * @param pChild The kSubmit child.
|
|---|
| 2317 | */
|
|---|
| 2318 | static void mkWinChildcareWorkerThreadHandleSubmit(PWINCHILDCAREWORKER pWorker, PWINCHILD pChild)
|
|---|
| 2319 | {
|
|---|
| 2320 | void *pvSubmitWorker = pChild->u.Submit.pvSubmitWorker;
|
|---|
| 2321 |
|
|---|
| 2322 | /*
|
|---|
| 2323 | * Prep the wait handles.
|
|---|
| 2324 | */
|
|---|
| 2325 | HANDLE ahHandles[3] = { pChild->u.Submit.hEvent, NULL, NULL };
|
|---|
| 2326 | DWORD cHandles = 1;
|
|---|
| 2327 | if (pChild->u.Submit.pStdOut)
|
|---|
| 2328 | {
|
|---|
| 2329 | assert(pChild->u.Submit.pStdErr);
|
|---|
| 2330 | pChild->u.Submit.pStdOut->fHaveWrittenOut = FALSE;
|
|---|
| 2331 | ahHandles[cHandles++] = pChild->u.Submit.pStdOut->hEvent;
|
|---|
| 2332 | pChild->u.Submit.pStdErr->fHaveWrittenOut = FALSE;
|
|---|
| 2333 | ahHandles[cHandles++] = pChild->u.Submit.pStdErr->hEvent;
|
|---|
| 2334 | }
|
|---|
| 2335 |
|
|---|
| 2336 | /*
|
|---|
| 2337 | * Wait loop.
|
|---|
| 2338 | */
|
|---|
| 2339 | for (;;)
|
|---|
| 2340 | {
|
|---|
| 2341 | int iExitCode = -42;
|
|---|
| 2342 | int iSignal = -1;
|
|---|
| 2343 | DWORD dwStatus;
|
|---|
| 2344 | if (cHandles == 1)
|
|---|
| 2345 | dwStatus = WaitForSingleObject(ahHandles[0], INFINITE);
|
|---|
| 2346 | else
|
|---|
| 2347 | {
|
|---|
| 2348 | dwStatus = WaitForMultipleObjects(cHandles, ahHandles, FALSE /*fWaitAll*/, INFINITE);
|
|---|
| 2349 | assert(dwStatus != WAIT_FAILED);
|
|---|
| 2350 | if (dwStatus == WAIT_OBJECT_0 + 1)
|
|---|
| 2351 | mkWinChildcareWorkerCatchOutput(pChild, pChild->u.Submit.pStdOut, FALSE /*fDraining*/);
|
|---|
| 2352 | else if (dwStatus == WAIT_OBJECT_0 + 2)
|
|---|
| 2353 | mkWinChildcareWorkerCatchOutput(pChild, pChild->u.Submit.pStdErr, FALSE /*fDraining*/);
|
|---|
| 2354 | }
|
|---|
| 2355 | if (kSubmitSubProcGetResult((intptr_t)pvSubmitWorker, dwStatus == WAIT_OBJECT_0 /*fBlock*/, &iExitCode, &iSignal) == 0)
|
|---|
| 2356 | {
|
|---|
| 2357 | if (pChild->u.Submit.pStdOut)
|
|---|
| 2358 | MkWinChildcareWorkerDrainPipes(pChild, pChild->u.Submit.pStdOut, pChild->u.Submit.pStdErr);
|
|---|
| 2359 |
|
|---|
| 2360 | pChild->iExitCode = iExitCode;
|
|---|
| 2361 | pChild->iSignal = iSignal;
|
|---|
| 2362 | /* Cleanup must be done on the main thread. */
|
|---|
| 2363 | return;
|
|---|
| 2364 | }
|
|---|
| 2365 |
|
|---|
| 2366 | if (pChild->iSignal != 0)
|
|---|
| 2367 | kSubmitSubProcKill((intptr_t)pvSubmitWorker, pChild->iSignal);
|
|---|
| 2368 | }
|
|---|
| 2369 | }
|
|---|
| 2370 |
|
|---|
| 2371 | /**
|
|---|
| 2372 | * Childcare worker: handle kmk_redirect process.
|
|---|
| 2373 | *
|
|---|
| 2374 | * @param pWorker The worker.
|
|---|
| 2375 | * @param pChild The redirect child.
|
|---|
| 2376 | */
|
|---|
| 2377 | static void mkWinChildcareWorkerThreadHandleRedirect(PWINCHILDCAREWORKER pWorker, PWINCHILD pChild)
|
|---|
| 2378 | {
|
|---|
| 2379 | mkWinChildcareWorkerWaitForProcess(pWorker, pChild, pChild->u.Redirect.hProcess, L"kmk_redirect", FALSE /*fCatchOutput*/);
|
|---|
| 2380 | }
|
|---|
| 2381 |
|
|---|
| 2382 | #endif /* KMK */
|
|---|
| 2383 |
|
|---|
| 2384 | /**
|
|---|
| 2385 | * Childcare worker thread.
|
|---|
| 2386 | *
|
|---|
| 2387 | * @returns 0
|
|---|
| 2388 | * @param pvUser The worker instance.
|
|---|
| 2389 | */
|
|---|
| 2390 | static unsigned int __stdcall mkWinChildcareWorkerThread(void *pvUser)
|
|---|
| 2391 | {
|
|---|
| 2392 | PWINCHILDCAREWORKER pWorker = (PWINCHILDCAREWORKER)pvUser;
|
|---|
| 2393 | assert(pWorker->uMagic == WINCHILDCAREWORKER_MAGIC);
|
|---|
| 2394 |
|
|---|
| 2395 | #ifdef MKWINCHILD_DO_SET_PROCESSOR_GROUP
|
|---|
| 2396 | /*
|
|---|
| 2397 | * Adjust process group if necessary.
|
|---|
| 2398 | *
|
|---|
| 2399 | * Note! It seems that setting the mask to zero means that we select all
|
|---|
| 2400 | * active processors. Couldn't find any alternative API for getting
|
|---|
| 2401 | * the correct active processor mask.
|
|---|
| 2402 | */
|
|---|
| 2403 | if (g_cProcessorGroups > 1)
|
|---|
| 2404 | {
|
|---|
| 2405 | GROUP_AFFINITY Affinity = { 0 /* == all active apparently */ , pWorker->iProcessorGroup, { 0, 0, 0 } };
|
|---|
| 2406 | BOOL fRet = g_pfnSetThreadGroupAffinity(GetCurrentThread(), &Affinity, NULL);
|
|---|
| 2407 | assert(fRet); (void)fRet;
|
|---|
| 2408 | # ifndef NDEBUG
|
|---|
| 2409 | {
|
|---|
| 2410 | GROUP_AFFINITY ActualAffinity = { 0xbeefbeefU, 0xbeef, { 0xbeef, 0xbeef, 0xbeef } };
|
|---|
| 2411 | fRet = GetThreadGroupAffinity(GetCurrentThread(), &ActualAffinity);
|
|---|
| 2412 | assert(fRet); (void)fRet;
|
|---|
| 2413 | assert(ActualAffinity.Group == pWorker->iProcessorGroup);
|
|---|
| 2414 | }
|
|---|
| 2415 | # endif
|
|---|
| 2416 | }
|
|---|
| 2417 | #endif
|
|---|
| 2418 |
|
|---|
| 2419 | /*
|
|---|
| 2420 | * Work loop.
|
|---|
| 2421 | */
|
|---|
| 2422 | while (!g_fShutdown)
|
|---|
| 2423 | {
|
|---|
| 2424 | /*
|
|---|
| 2425 | * Try go idle.
|
|---|
| 2426 | */
|
|---|
| 2427 | PWINCHILD pChild = pWorker->pTailTodoChildren;
|
|---|
| 2428 | if (!pChild)
|
|---|
| 2429 | {
|
|---|
| 2430 | _InterlockedExchange(&pWorker->fIdle, TRUE);
|
|---|
| 2431 | pChild = pWorker->pTailTodoChildren;
|
|---|
| 2432 | if (!pChild)
|
|---|
| 2433 | {
|
|---|
| 2434 | DWORD dwStatus;
|
|---|
| 2435 |
|
|---|
| 2436 | _InterlockedIncrement((long *)&g_cIdleChildcareWorkers);
|
|---|
| 2437 | _InterlockedExchange((long *)&g_idxLastChildcareWorker, pWorker->idxWorker);
|
|---|
| 2438 | dwStatus = WaitForSingleObject(pWorker->hEvtIdle, INFINITE);
|
|---|
| 2439 | _InterlockedExchange(&pWorker->fIdle, FALSE);
|
|---|
| 2440 | _InterlockedDecrement((long *)&g_cIdleChildcareWorkers);
|
|---|
| 2441 |
|
|---|
| 2442 | assert(dwStatus != WAIT_FAILED);
|
|---|
| 2443 | if (dwStatus == WAIT_FAILED)
|
|---|
| 2444 | Sleep(20);
|
|---|
| 2445 |
|
|---|
| 2446 | pChild = pWorker->pTailTodoChildren;
|
|---|
| 2447 | }
|
|---|
| 2448 | else
|
|---|
| 2449 | _InterlockedExchange(&pWorker->fIdle, FALSE);
|
|---|
| 2450 | }
|
|---|
| 2451 | if (pChild)
|
|---|
| 2452 | {
|
|---|
| 2453 | /*
|
|---|
| 2454 | * We got work to do. First job is to deque the job.
|
|---|
| 2455 | */
|
|---|
| 2456 | pChild = mkWinChildDequeFromLifo(&pWorker->pTailTodoChildren, pChild);
|
|---|
| 2457 | assert(pChild);
|
|---|
| 2458 | if (pChild)
|
|---|
| 2459 | {
|
|---|
| 2460 | PWINCHILD pTailExpect;
|
|---|
| 2461 |
|
|---|
| 2462 | pChild->pWorker = pWorker;
|
|---|
| 2463 | pWorker->pCurChild = pChild;
|
|---|
| 2464 | switch (pChild->enmType)
|
|---|
| 2465 | {
|
|---|
| 2466 | case WINCHILDTYPE_PROCESS:
|
|---|
| 2467 | mkWinChildcareWorkerThreadHandleProcess(pWorker, pChild);
|
|---|
| 2468 | break;
|
|---|
| 2469 | #ifdef KMK
|
|---|
| 2470 | case WINCHILDTYPE_BUILT_IN:
|
|---|
| 2471 | mkWinChildcareWorkerThreadHandleBuiltIn(pWorker, pChild);
|
|---|
| 2472 | break;
|
|---|
| 2473 | case WINCHILDTYPE_APPEND:
|
|---|
| 2474 | mkWinChildcareWorkerThreadHandleAppend(pWorker, pChild);
|
|---|
| 2475 | break;
|
|---|
| 2476 | case WINCHILDTYPE_SUBMIT:
|
|---|
| 2477 | mkWinChildcareWorkerThreadHandleSubmit(pWorker, pChild);
|
|---|
| 2478 | break;
|
|---|
| 2479 | case WINCHILDTYPE_REDIRECT:
|
|---|
| 2480 | mkWinChildcareWorkerThreadHandleRedirect(pWorker, pChild);
|
|---|
| 2481 | break;
|
|---|
| 2482 | #endif
|
|---|
| 2483 | default:
|
|---|
| 2484 | assert(0);
|
|---|
| 2485 | }
|
|---|
| 2486 | pWorker->pCurChild = NULL;
|
|---|
| 2487 | pChild->pWorker = NULL;
|
|---|
| 2488 |
|
|---|
| 2489 | /*
|
|---|
| 2490 | * Move the child to the completed list.
|
|---|
| 2491 | */
|
|---|
| 2492 | pTailExpect = NULL;
|
|---|
| 2493 | for (;;)
|
|---|
| 2494 | {
|
|---|
| 2495 | PWINCHILD pTailActual;
|
|---|
| 2496 | pChild->pNext = pTailExpect;
|
|---|
| 2497 | pTailActual = _InterlockedCompareExchangePointer(&g_pTailCompletedChildren, pChild, pTailExpect);
|
|---|
| 2498 | if (pTailActual != pTailExpect)
|
|---|
| 2499 | pTailExpect = pTailActual;
|
|---|
| 2500 | else
|
|---|
| 2501 | {
|
|---|
| 2502 | _InterlockedDecrement(&g_cPendingChildren);
|
|---|
| 2503 | if (pTailExpect)
|
|---|
| 2504 | break;
|
|---|
| 2505 | if (SetEvent(g_hEvtWaitChildren))
|
|---|
| 2506 | break;
|
|---|
| 2507 | MkWinChildError(pWorker, 1, "SetEvent(g_hEvtWaitChildren=%p) failed: %u\n",
|
|---|
| 2508 | g_hEvtWaitChildren, GetLastError());
|
|---|
| 2509 | break;
|
|---|
| 2510 | }
|
|---|
| 2511 | }
|
|---|
| 2512 | }
|
|---|
| 2513 | }
|
|---|
| 2514 | }
|
|---|
| 2515 |
|
|---|
| 2516 | _endthreadex(0);
|
|---|
| 2517 | return 0;
|
|---|
| 2518 | }
|
|---|
| 2519 |
|
|---|
| 2520 | /**
|
|---|
| 2521 | * Creates a pipe for catching child output.
|
|---|
| 2522 | *
|
|---|
| 2523 | * This is a custom CreatePipe implementation that allows for overlapped I/O on
|
|---|
| 2524 | * our end of the pipe. Silly that they don't offer an API that does this.
|
|---|
| 2525 | *
|
|---|
| 2526 | * @returns The pipe that was created. NULL on failure.
|
|---|
| 2527 | * @param pPipe The structure for the pipe.
|
|---|
| 2528 | * @param iWhich Which standard descriptor this is a pipe for.
|
|---|
| 2529 | * @param idxWorker The worker index.
|
|---|
| 2530 | */
|
|---|
| 2531 | PWINCCWPIPE MkWinChildcareCreateWorkerPipe(unsigned iWhich, unsigned int idxWorker)
|
|---|
| 2532 | {
|
|---|
| 2533 | /*
|
|---|
| 2534 | * We try generate a reasonably unique name from the get go, so this retry
|
|---|
| 2535 | * loop shouldn't really ever be needed. But you never know.
|
|---|
| 2536 | */
|
|---|
| 2537 | static unsigned s_iSeqNo = 0;
|
|---|
| 2538 | DWORD const cMaxInstances = 1;
|
|---|
| 2539 | DWORD const cbPipe = 4096;
|
|---|
| 2540 | DWORD const cMsTimeout = 0;
|
|---|
| 2541 | unsigned cTries = 256;
|
|---|
| 2542 | while (cTries-- > 0)
|
|---|
| 2543 | {
|
|---|
| 2544 | /* Create the pipe (our end). */
|
|---|
| 2545 | HANDLE hPipeRead;
|
|---|
| 2546 | DWORD fOpenMode = PIPE_ACCESS_INBOUND | FILE_FLAG_OVERLAPPED | FILE_FLAG_FIRST_PIPE_INSTANCE;
|
|---|
| 2547 | DWORD fPipeMode = PIPE_TYPE_BYTE | PIPE_READMODE_BYTE | PIPE_WAIT | PIPE_REJECT_REMOTE_CLIENTS;
|
|---|
| 2548 | WCHAR wszName[MAX_PATH];
|
|---|
| 2549 | s_iSeqNo++;
|
|---|
| 2550 | _snwprintf(wszName, MAX_PATH, L"\\\\.\\pipe\\kmk-winchildren-%u-%u-%u-%s-%u-%u",
|
|---|
| 2551 | GetCurrentProcessId(), GetCurrentThreadId(), idxWorker, iWhich == 1 ? L"out" : L"err", s_iSeqNo, GetTickCount());
|
|---|
| 2552 | hPipeRead = CreateNamedPipeW(wszName, fOpenMode, fPipeMode, cMaxInstances, cbPipe, cbPipe, cMsTimeout, NULL /*pSecAttr*/);
|
|---|
| 2553 | if (hPipeRead == INVALID_HANDLE_VALUE && GetLastError() == ERROR_INVALID_PARAMETER)
|
|---|
| 2554 | {
|
|---|
| 2555 | fOpenMode &= ~FILE_FLAG_FIRST_PIPE_INSTANCE;
|
|---|
| 2556 | fPipeMode &= ~PIPE_REJECT_REMOTE_CLIENTS;
|
|---|
| 2557 | hPipeRead = CreateNamedPipeW(wszName, fOpenMode, fPipeMode, cMaxInstances, cbPipe, cbPipe, cMsTimeout, NULL /*pSecAttr*/);
|
|---|
| 2558 | }
|
|---|
| 2559 | if (hPipeRead != INVALID_HANDLE_VALUE)
|
|---|
| 2560 | {
|
|---|
| 2561 | /* Connect the other end. */
|
|---|
| 2562 | HANDLE hPipeWrite = CreateFileW(wszName, GENERIC_WRITE | FILE_READ_ATTRIBUTES, 0 /*fShareMode*/, NULL /*pSecAttr*/,
|
|---|
| 2563 | OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL /*hTemplateFile*/);
|
|---|
| 2564 | if (hPipeWrite != INVALID_HANDLE_VALUE)
|
|---|
| 2565 | {
|
|---|
| 2566 | /*
|
|---|
| 2567 | * Create the event object and we're done.
|
|---|
| 2568 | *
|
|---|
| 2569 | * It starts in signalled stated so we don't need special code
|
|---|
| 2570 | * for handing when we start waiting.
|
|---|
| 2571 | */
|
|---|
| 2572 | HANDLE hEvent = CreateEventW(NULL /*pSecAttr*/, TRUE /*fManualReset*/, TRUE /*fInitialState*/, NULL /*pwszName*/);
|
|---|
| 2573 | if (hEvent != NULL)
|
|---|
| 2574 | {
|
|---|
| 2575 | PWINCCWPIPE pPipe = (PWINCCWPIPE)xcalloc(sizeof(*pPipe));
|
|---|
| 2576 | pPipe->hPipeMine = hPipeRead;
|
|---|
| 2577 | pPipe->hPipeChild = hPipeWrite;
|
|---|
| 2578 | pPipe->hEvent = hEvent;
|
|---|
| 2579 | pPipe->iWhich = iWhich;
|
|---|
| 2580 | pPipe->fReadPending = FALSE;
|
|---|
| 2581 | pPipe->cbBuffer = cbPipe;
|
|---|
| 2582 | pPipe->pbBuffer = xcalloc(cbPipe);
|
|---|
| 2583 | return pPipe;
|
|---|
| 2584 | }
|
|---|
| 2585 |
|
|---|
| 2586 | CloseHandle(hPipeWrite);
|
|---|
| 2587 | CloseHandle(hPipeRead);
|
|---|
| 2588 | return NULL;
|
|---|
| 2589 | }
|
|---|
| 2590 | CloseHandle(hPipeRead);
|
|---|
| 2591 | }
|
|---|
| 2592 | }
|
|---|
| 2593 | return NULL;
|
|---|
| 2594 | }
|
|---|
| 2595 |
|
|---|
| 2596 | /**
|
|---|
| 2597 | * Destroys a childcare worker pipe.
|
|---|
| 2598 | *
|
|---|
| 2599 | * @param pPipe The pipe.
|
|---|
| 2600 | */
|
|---|
| 2601 | void MkWinChildcareDeleteWorkerPipe(PWINCCWPIPE pPipe)
|
|---|
| 2602 | {
|
|---|
| 2603 | if (pPipe->hPipeChild != NULL)
|
|---|
| 2604 | {
|
|---|
| 2605 | CloseHandle(pPipe->hPipeChild);
|
|---|
| 2606 | pPipe->hPipeChild = NULL;
|
|---|
| 2607 | }
|
|---|
| 2608 |
|
|---|
| 2609 | if (pPipe->hPipeMine != NULL)
|
|---|
| 2610 | {
|
|---|
| 2611 | if (pPipe->fReadPending)
|
|---|
| 2612 | if (!CancelIo(pPipe->hPipeMine))
|
|---|
| 2613 | WaitForSingleObject(pPipe->hEvent, INFINITE);
|
|---|
| 2614 | CloseHandle(pPipe->hPipeMine);
|
|---|
| 2615 | pPipe->hPipeMine = NULL;
|
|---|
| 2616 | }
|
|---|
| 2617 |
|
|---|
| 2618 | if (pPipe->hEvent != NULL)
|
|---|
| 2619 | {
|
|---|
| 2620 | CloseHandle(pPipe->hEvent);
|
|---|
| 2621 | pPipe->hEvent = NULL;
|
|---|
| 2622 | }
|
|---|
| 2623 |
|
|---|
| 2624 | if (pPipe->pbBuffer)
|
|---|
| 2625 | {
|
|---|
| 2626 | free(pPipe->pbBuffer);
|
|---|
| 2627 | pPipe->pbBuffer = NULL;
|
|---|
| 2628 | }
|
|---|
| 2629 | }
|
|---|
| 2630 |
|
|---|
| 2631 | /**
|
|---|
| 2632 | * Initializes the processor group allocator.
|
|---|
| 2633 | *
|
|---|
| 2634 | * @param pState The allocator to initialize.
|
|---|
| 2635 | */
|
|---|
| 2636 | void MkWinChildInitCpuGroupAllocator(PMKWINCHILDCPUGROUPALLOCSTATE pState)
|
|---|
| 2637 | {
|
|---|
| 2638 | /* We shift the starting group with the make nesting level as part of
|
|---|
| 2639 | our very simple distribution strategy. */
|
|---|
| 2640 | pState->idxGroup = makelevel;
|
|---|
| 2641 | pState->idxProcessorInGroup = 0;
|
|---|
| 2642 | }
|
|---|
| 2643 |
|
|---|
| 2644 | /**
|
|---|
| 2645 | * Allocate CPU group for the next child process.
|
|---|
| 2646 | *
|
|---|
| 2647 | * @returns CPU group.
|
|---|
| 2648 | * @param pState The allocator state. Must be initialized by
|
|---|
| 2649 | * MkWinChildInitCpuGroupAllocator().
|
|---|
| 2650 | */
|
|---|
| 2651 | unsigned int MkWinChildAllocateCpuGroup(PMKWINCHILDCPUGROUPALLOCSTATE pState)
|
|---|
| 2652 | {
|
|---|
| 2653 | unsigned int iGroup = 0;
|
|---|
| 2654 | if (g_cProcessorGroups > 1)
|
|---|
| 2655 | {
|
|---|
| 2656 | unsigned int cMaxInGroup;
|
|---|
| 2657 | unsigned int cInGroup;
|
|---|
| 2658 |
|
|---|
| 2659 | iGroup = pState->idxGroup % g_cProcessorGroups;
|
|---|
| 2660 |
|
|---|
| 2661 | /* Advance. We employ a very simple strategy that does 50% in
|
|---|
| 2662 | each group for each group cycle. Odd processor counts are
|
|---|
| 2663 | caught in odd group cycles. The init function selects the
|
|---|
| 2664 | starting group based on make nesting level to avoid stressing
|
|---|
| 2665 | out the first group. */
|
|---|
| 2666 | cInGroup = ++pState->idxProcessorInGroup;
|
|---|
| 2667 | cMaxInGroup = g_pacProcessorsInGroup[iGroup];
|
|---|
| 2668 | if ( !(cMaxInGroup & 1)
|
|---|
| 2669 | || !((pState->idxGroup / g_cProcessorGroups) & 1))
|
|---|
| 2670 | cMaxInGroup /= 2;
|
|---|
| 2671 | else
|
|---|
| 2672 | cMaxInGroup = cMaxInGroup / 2 + 1;
|
|---|
| 2673 | if (cInGroup >= cMaxInGroup)
|
|---|
| 2674 | {
|
|---|
| 2675 | pState->idxProcessorInGroup = 0;
|
|---|
| 2676 | pState->idxGroup++;
|
|---|
| 2677 | }
|
|---|
| 2678 | }
|
|---|
| 2679 | return iGroup;
|
|---|
| 2680 | }
|
|---|
| 2681 |
|
|---|
| 2682 | /**
|
|---|
| 2683 | * Creates another childcare worker.
|
|---|
| 2684 | *
|
|---|
| 2685 | * @returns The new worker, if we succeeded.
|
|---|
| 2686 | */
|
|---|
| 2687 | static PWINCHILDCAREWORKER mkWinChildcareCreateWorker(void)
|
|---|
| 2688 | {
|
|---|
| 2689 | PWINCHILDCAREWORKER pWorker = (PWINCHILDCAREWORKER)xcalloc(sizeof(*pWorker));
|
|---|
| 2690 | pWorker->uMagic = WINCHILDCAREWORKER_MAGIC;
|
|---|
| 2691 | pWorker->idxWorker = g_cChildCareworkers;
|
|---|
| 2692 | pWorker->hEvtIdle = CreateEventW(NULL, FALSE /*fManualReset*/, FALSE /*fInitialState*/, NULL /*pwszName*/);
|
|---|
| 2693 | if (pWorker->hEvtIdle)
|
|---|
| 2694 | {
|
|---|
| 2695 | pWorker->pStdOut = MkWinChildcareCreateWorkerPipe(1, pWorker->idxWorker);
|
|---|
| 2696 | if (pWorker->pStdOut)
|
|---|
| 2697 | {
|
|---|
| 2698 | pWorker->pStdErr = MkWinChildcareCreateWorkerPipe(2, pWorker->idxWorker);
|
|---|
| 2699 | if (pWorker->pStdErr)
|
|---|
| 2700 | {
|
|---|
| 2701 | /* Before we start the thread, assign it to a processor group. */
|
|---|
| 2702 | pWorker->iProcessorGroup = MkWinChildAllocateCpuGroup(&g_ProcessorGroupAllocator);
|
|---|
| 2703 |
|
|---|
| 2704 | /* Try start the thread. */
|
|---|
| 2705 | pWorker->hThread = (HANDLE)_beginthreadex(NULL, 0 /*cbStack*/, mkWinChildcareWorkerThread, pWorker,
|
|---|
| 2706 | 0, &pWorker->tid);
|
|---|
| 2707 | if (pWorker->hThread != NULL)
|
|---|
| 2708 | {
|
|---|
| 2709 | pWorker->idxWorker = g_cChildCareworkers++; /* paranoia */
|
|---|
| 2710 | g_papChildCareworkers[pWorker->idxWorker] = pWorker;
|
|---|
| 2711 | return pWorker;
|
|---|
| 2712 | }
|
|---|
| 2713 |
|
|---|
| 2714 | /* Bail out! */
|
|---|
| 2715 | ONS (error, NILF, "_beginthreadex failed: %u (%s)\n", errno, strerror(errno));
|
|---|
| 2716 | MkWinChildcareDeleteWorkerPipe(pWorker->pStdErr);
|
|---|
| 2717 | }
|
|---|
| 2718 | else
|
|---|
| 2719 | ON (error, NILF, "Failed to create stderr pipe: %u\n", GetLastError());
|
|---|
| 2720 | MkWinChildcareDeleteWorkerPipe(pWorker->pStdOut);
|
|---|
| 2721 | }
|
|---|
| 2722 | else
|
|---|
| 2723 | ON (error, NILF, "Failed to create stdout pipe: %u\n", GetLastError());
|
|---|
| 2724 | CloseHandle(pWorker->hEvtIdle);
|
|---|
| 2725 | }
|
|---|
| 2726 | else
|
|---|
| 2727 | ON (error, NILF, "CreateEvent failed: %u\n", GetLastError());
|
|---|
| 2728 | pWorker->uMagic = ~WINCHILDCAREWORKER_MAGIC;
|
|---|
| 2729 | free(pWorker);
|
|---|
| 2730 | return NULL;
|
|---|
| 2731 | }
|
|---|
| 2732 |
|
|---|
| 2733 | /**
|
|---|
| 2734 | * Helper for copying argument and environment vectors.
|
|---|
| 2735 | *
|
|---|
| 2736 | * @returns Single alloc block copy.
|
|---|
| 2737 | * @param papszSrc The source vector.
|
|---|
| 2738 | * @param pcbStrings Where to return the size of the strings & terminator.
|
|---|
| 2739 | */
|
|---|
| 2740 | static char **mkWinChildCopyStringArray(char **papszSrc, size_t *pcbStrings)
|
|---|
| 2741 | {
|
|---|
| 2742 | const char *psz;
|
|---|
| 2743 | char **papszDstArray;
|
|---|
| 2744 | char *pszDstStr;
|
|---|
| 2745 | size_t i;
|
|---|
| 2746 |
|
|---|
| 2747 | /* Calc sizes first. */
|
|---|
| 2748 | size_t cbStrings = 1; /* (one extra for terminator string) */
|
|---|
| 2749 | size_t cStrings = 0;
|
|---|
| 2750 | while ((psz = papszSrc[cStrings]) != NULL)
|
|---|
| 2751 | {
|
|---|
| 2752 | cbStrings += strlen(psz) + 1;
|
|---|
| 2753 | cStrings++;
|
|---|
| 2754 | }
|
|---|
| 2755 | *pcbStrings = cbStrings;
|
|---|
| 2756 |
|
|---|
| 2757 | /* Allocate destination. */
|
|---|
| 2758 | papszDstArray = (char **)xmalloc(cbStrings + (cStrings + 1) * sizeof(papszDstArray[0]));
|
|---|
| 2759 | pszDstStr = (char *)&papszDstArray[cStrings + 1];
|
|---|
| 2760 |
|
|---|
| 2761 | /* Copy it. */
|
|---|
| 2762 | for (i = 0; i < cStrings; i++)
|
|---|
| 2763 | {
|
|---|
| 2764 | const char *pszSource = papszSrc[i];
|
|---|
| 2765 | size_t cchString = strlen(pszSource);
|
|---|
| 2766 | papszDstArray[i] = pszDstStr;
|
|---|
| 2767 | memcpy(pszDstStr, pszSource, cchString);
|
|---|
| 2768 | pszDstStr += cchString;
|
|---|
| 2769 | *pszDstStr++ = '\0';
|
|---|
| 2770 | }
|
|---|
| 2771 | *pszDstStr = '\0';
|
|---|
| 2772 | assert(&pszDstStr[1] - papszDstArray[0] == cbStrings);
|
|---|
| 2773 | papszDstArray[i] = NULL;
|
|---|
| 2774 | return papszDstArray;
|
|---|
| 2775 | }
|
|---|
| 2776 |
|
|---|
| 2777 | /**
|
|---|
| 2778 | * Allocate and init a WINCHILD.
|
|---|
| 2779 | *
|
|---|
| 2780 | * @returns The new windows child structure.
|
|---|
| 2781 | * @param enmType The child type.
|
|---|
| 2782 | */
|
|---|
| 2783 | static PWINCHILD mkWinChildNew(WINCHILDTYPE enmType)
|
|---|
| 2784 | {
|
|---|
| 2785 | PWINCHILD pChild = xcalloc(sizeof(*pChild));
|
|---|
| 2786 | pChild->enmType = enmType;
|
|---|
| 2787 | pChild->fCoreDumped = 0;
|
|---|
| 2788 | pChild->iSignal = 0;
|
|---|
| 2789 | pChild->iExitCode = 222222;
|
|---|
| 2790 | pChild->uMagic = WINCHILD_MAGIC;
|
|---|
| 2791 | pChild->pid = (intptr_t)pChild;
|
|---|
| 2792 | return pChild;
|
|---|
| 2793 | }
|
|---|
| 2794 |
|
|---|
| 2795 | /**
|
|---|
| 2796 | * Destructor for WINCHILD.
|
|---|
| 2797 | *
|
|---|
| 2798 | * @param pChild The child structure to destroy.
|
|---|
| 2799 | */
|
|---|
| 2800 | static void mkWinChildDelete(PWINCHILD pChild)
|
|---|
| 2801 | {
|
|---|
| 2802 | assert(pChild->uMagic == WINCHILD_MAGIC);
|
|---|
| 2803 | pChild->uMagic = ~WINCHILD_MAGIC;
|
|---|
| 2804 |
|
|---|
| 2805 | switch (pChild->enmType)
|
|---|
| 2806 | {
|
|---|
| 2807 | case WINCHILDTYPE_PROCESS:
|
|---|
| 2808 | {
|
|---|
| 2809 | if (pChild->u.Process.papszArgs)
|
|---|
| 2810 | {
|
|---|
| 2811 | free(pChild->u.Process.papszArgs);
|
|---|
| 2812 | pChild->u.Process.papszArgs = NULL;
|
|---|
| 2813 | }
|
|---|
| 2814 | if (pChild->u.Process.cbEnvStrings && pChild->u.Process.papszEnv)
|
|---|
| 2815 | {
|
|---|
| 2816 | free(pChild->u.Process.papszEnv);
|
|---|
| 2817 | pChild->u.Process.papszEnv = NULL;
|
|---|
| 2818 | }
|
|---|
| 2819 | if (pChild->u.Process.pszShell)
|
|---|
| 2820 | {
|
|---|
| 2821 | free(pChild->u.Process.pszShell);
|
|---|
| 2822 | pChild->u.Process.pszShell = NULL;
|
|---|
| 2823 | }
|
|---|
| 2824 | if (pChild->u.Process.hProcess)
|
|---|
| 2825 | {
|
|---|
| 2826 | CloseHandle(pChild->u.Process.hProcess);
|
|---|
| 2827 | pChild->u.Process.hProcess = NULL;
|
|---|
| 2828 | }
|
|---|
| 2829 | mkWinChildcareWorkerCloseStandardHandles(pChild);
|
|---|
| 2830 | break;
|
|---|
| 2831 | }
|
|---|
| 2832 |
|
|---|
| 2833 | #ifdef KMK
|
|---|
| 2834 | case WINCHILDTYPE_BUILT_IN:
|
|---|
| 2835 | if (pChild->u.BuiltIn.papszArgs)
|
|---|
| 2836 | {
|
|---|
| 2837 | free(pChild->u.BuiltIn.papszArgs);
|
|---|
| 2838 | pChild->u.BuiltIn.papszArgs = NULL;
|
|---|
| 2839 | }
|
|---|
| 2840 | if (pChild->u.BuiltIn.papszEnv)
|
|---|
| 2841 | {
|
|---|
| 2842 | free(pChild->u.BuiltIn.papszEnv);
|
|---|
| 2843 | pChild->u.BuiltIn.papszEnv = NULL;
|
|---|
| 2844 | }
|
|---|
| 2845 | break;
|
|---|
| 2846 |
|
|---|
| 2847 | case WINCHILDTYPE_APPEND:
|
|---|
| 2848 | if (pChild->u.Append.pszFilename)
|
|---|
| 2849 | {
|
|---|
| 2850 | free(pChild->u.Append.pszFilename);
|
|---|
| 2851 | pChild->u.Append.pszFilename = NULL;
|
|---|
| 2852 | }
|
|---|
| 2853 | if (pChild->u.Append.pszAppend)
|
|---|
| 2854 | {
|
|---|
| 2855 | free(pChild->u.Append.pszAppend);
|
|---|
| 2856 | pChild->u.Append.pszAppend = NULL;
|
|---|
| 2857 | }
|
|---|
| 2858 | break;
|
|---|
| 2859 |
|
|---|
| 2860 | case WINCHILDTYPE_SUBMIT:
|
|---|
| 2861 | if (pChild->u.Submit.pvSubmitWorker)
|
|---|
| 2862 | {
|
|---|
| 2863 | kSubmitSubProcCleanup((intptr_t)pChild->u.Submit.pvSubmitWorker);
|
|---|
| 2864 | pChild->u.Submit.pvSubmitWorker = NULL;
|
|---|
| 2865 | }
|
|---|
| 2866 | break;
|
|---|
| 2867 |
|
|---|
| 2868 | case WINCHILDTYPE_REDIRECT:
|
|---|
| 2869 | if (pChild->u.Redirect.hProcess)
|
|---|
| 2870 | {
|
|---|
| 2871 | CloseHandle(pChild->u.Redirect.hProcess);
|
|---|
| 2872 | pChild->u.Redirect.hProcess = NULL;
|
|---|
| 2873 | }
|
|---|
| 2874 | break;
|
|---|
| 2875 | #endif /* KMK */
|
|---|
| 2876 |
|
|---|
| 2877 | default:
|
|---|
| 2878 | assert(0);
|
|---|
| 2879 | }
|
|---|
| 2880 |
|
|---|
| 2881 | free(pChild);
|
|---|
| 2882 | }
|
|---|
| 2883 |
|
|---|
| 2884 | /**
|
|---|
| 2885 | * Queues the child with a worker, creating new workers if necessary.
|
|---|
| 2886 | *
|
|---|
| 2887 | * @returns 0 on success, windows error code on failure (child destroyed).
|
|---|
| 2888 | * @param pChild The child.
|
|---|
| 2889 | * @param pPid Where to return the PID (optional).
|
|---|
| 2890 | */
|
|---|
| 2891 | static int mkWinChildPushToCareWorker(PWINCHILD pChild, pid_t *pPid)
|
|---|
| 2892 | {
|
|---|
| 2893 | PWINCHILDCAREWORKER pWorker = NULL;
|
|---|
| 2894 | PWINCHILD pOldChild;
|
|---|
| 2895 | PWINCHILD pCurChild;
|
|---|
| 2896 |
|
|---|
| 2897 | /*
|
|---|
| 2898 | * There are usually idle workers around, except for at the start.
|
|---|
| 2899 | */
|
|---|
| 2900 | if (g_cIdleChildcareWorkers > 0)
|
|---|
| 2901 | {
|
|---|
| 2902 | /*
|
|---|
| 2903 | * Try the idle hint first and move forward from it.
|
|---|
| 2904 | */
|
|---|
| 2905 | unsigned int const cWorkers = g_cChildCareworkers;
|
|---|
| 2906 | unsigned int iHint = g_idxLastChildcareWorker;
|
|---|
| 2907 | unsigned int i;
|
|---|
| 2908 | for (i = iHint; i < cWorkers; i++)
|
|---|
| 2909 | {
|
|---|
| 2910 | PWINCHILDCAREWORKER pPossibleWorker = g_papChildCareworkers[i];
|
|---|
| 2911 | if (pPossibleWorker->fIdle)
|
|---|
| 2912 | {
|
|---|
| 2913 | pWorker = pPossibleWorker;
|
|---|
| 2914 | break;
|
|---|
| 2915 | }
|
|---|
| 2916 | }
|
|---|
| 2917 | if (!pWorker)
|
|---|
| 2918 | {
|
|---|
| 2919 | /* Scan from the start. */
|
|---|
| 2920 | if (iHint > cWorkers)
|
|---|
| 2921 | iHint = cWorkers;
|
|---|
| 2922 | for (i = 0; i < iHint; i++)
|
|---|
| 2923 | {
|
|---|
| 2924 | PWINCHILDCAREWORKER pPossibleWorker = g_papChildCareworkers[i];
|
|---|
| 2925 | if (pPossibleWorker->fIdle)
|
|---|
| 2926 | {
|
|---|
| 2927 | pWorker = pPossibleWorker;
|
|---|
| 2928 | break;
|
|---|
| 2929 | }
|
|---|
| 2930 | }
|
|---|
| 2931 | }
|
|---|
| 2932 | }
|
|---|
| 2933 | if (!pWorker)
|
|---|
| 2934 | {
|
|---|
| 2935 | /*
|
|---|
| 2936 | * Try create more workers if we haven't reached the max yet.
|
|---|
| 2937 | */
|
|---|
| 2938 | if (g_cChildCareworkers < g_cChildCareworkersMax)
|
|---|
| 2939 | pWorker = mkWinChildcareCreateWorker();
|
|---|
| 2940 |
|
|---|
| 2941 | /*
|
|---|
| 2942 | * Queue it with an existing worker. Look for one without anthing extra scheduled.
|
|---|
| 2943 | */
|
|---|
| 2944 | if (!pWorker)
|
|---|
| 2945 | {
|
|---|
| 2946 | unsigned int i = g_cChildCareworkers;
|
|---|
| 2947 | if (i == 0)
|
|---|
| 2948 | fatal(NILF, 0, _("Failed to create worker threads for managing child processes!\n"));
|
|---|
| 2949 | pWorker = g_papChildCareworkers[--i];
|
|---|
| 2950 | if (pWorker->pTailTodoChildren)
|
|---|
| 2951 | while (i-- > 0)
|
|---|
| 2952 | {
|
|---|
| 2953 | PWINCHILDCAREWORKER pPossibleWorker = g_papChildCareworkers[i];
|
|---|
| 2954 | if (!pPossibleWorker->pTailTodoChildren)
|
|---|
| 2955 | {
|
|---|
| 2956 | pWorker = pPossibleWorker;
|
|---|
| 2957 | break;
|
|---|
| 2958 | }
|
|---|
| 2959 | }
|
|---|
| 2960 | }
|
|---|
| 2961 | }
|
|---|
| 2962 |
|
|---|
| 2963 | /*
|
|---|
| 2964 | * Do the queueing.
|
|---|
| 2965 | */
|
|---|
| 2966 | pOldChild = NULL;
|
|---|
| 2967 | for (;;)
|
|---|
| 2968 | {
|
|---|
| 2969 | pChild->pNext = pOldChild;
|
|---|
| 2970 | pCurChild = _InterlockedCompareExchangePointer((void **)&pWorker->pTailTodoChildren, pChild, pOldChild);
|
|---|
| 2971 | if (pCurChild == pOldChild)
|
|---|
| 2972 | {
|
|---|
| 2973 | DWORD volatile dwErr;
|
|---|
| 2974 | _InterlockedIncrement(&g_cPendingChildren);
|
|---|
| 2975 | if ( !pWorker->fIdle
|
|---|
| 2976 | || SetEvent(pWorker->hEvtIdle))
|
|---|
| 2977 | {
|
|---|
| 2978 | *pPid = pChild->pid;
|
|---|
| 2979 | return 0;
|
|---|
| 2980 | }
|
|---|
| 2981 |
|
|---|
| 2982 | _InterlockedDecrement(&g_cPendingChildren);
|
|---|
| 2983 | dwErr = GetLastError();
|
|---|
| 2984 | assert(0);
|
|---|
| 2985 | mkWinChildDelete(pChild);
|
|---|
| 2986 | return dwErr ? dwErr : -20;
|
|---|
| 2987 | }
|
|---|
| 2988 | pOldChild = pCurChild;
|
|---|
| 2989 | }
|
|---|
| 2990 | }
|
|---|
| 2991 |
|
|---|
| 2992 | /**
|
|---|
| 2993 | * Creates a regular child process (job.c).
|
|---|
| 2994 | *
|
|---|
| 2995 | * Will copy the information and push it to a childcare thread that does the
|
|---|
| 2996 | * actual process creation.
|
|---|
| 2997 | *
|
|---|
| 2998 | * @returns 0 on success, windows status code on failure.
|
|---|
| 2999 | * @param papszArgs The arguments.
|
|---|
| 3000 | * @param papszEnv The environment (optional).
|
|---|
| 3001 | * @param pszShell The SHELL variable value (optional).
|
|---|
| 3002 | * @param pMkChild The make child structure (optional).
|
|---|
| 3003 | * @param pPid Where to return the pid.
|
|---|
| 3004 | */
|
|---|
| 3005 | int MkWinChildCreate(char **papszArgs, char **papszEnv, const char *pszShell, struct child *pMkChild, pid_t *pPid)
|
|---|
| 3006 | {
|
|---|
| 3007 | PWINCHILD pChild = mkWinChildNew(WINCHILDTYPE_PROCESS);
|
|---|
| 3008 | pChild->pMkChild = pMkChild;
|
|---|
| 3009 |
|
|---|
| 3010 | pChild->u.Process.papszArgs = mkWinChildCopyStringArray(papszArgs, &pChild->u.Process.cbArgsStrings);
|
|---|
| 3011 | if ( !papszEnv
|
|---|
| 3012 | || !pMkChild
|
|---|
| 3013 | || pMkChild->environment == papszEnv)
|
|---|
| 3014 | {
|
|---|
| 3015 | pChild->u.Process.cbEnvStrings = 0;
|
|---|
| 3016 | pChild->u.Process.papszEnv = papszEnv;
|
|---|
| 3017 | }
|
|---|
| 3018 | else
|
|---|
| 3019 | pChild->u.Process.papszEnv = mkWinChildCopyStringArray(papszEnv, &pChild->u.Process.cbEnvStrings);
|
|---|
| 3020 | if (pszShell)
|
|---|
| 3021 | pChild->u.Process.pszShell = xstrdup(pszShell);
|
|---|
| 3022 | pChild->u.Process.hStdOut = INVALID_HANDLE_VALUE;
|
|---|
| 3023 | pChild->u.Process.hStdErr = INVALID_HANDLE_VALUE;
|
|---|
| 3024 |
|
|---|
| 3025 | /* We always catch the output in order to prevent character soups courtesy
|
|---|
| 3026 | of the microsoft CRT and/or linkers writing character by character to the
|
|---|
| 3027 | console. Always try write whole lines, even when --output-sync is none. */
|
|---|
| 3028 | pChild->u.Process.fCatchOutput = TRUE;
|
|---|
| 3029 |
|
|---|
| 3030 | return mkWinChildPushToCareWorker(pChild, pPid);
|
|---|
| 3031 | }
|
|---|
| 3032 |
|
|---|
| 3033 | /**
|
|---|
| 3034 | * Creates a chile process with a pipe hooked up to stdout.
|
|---|
| 3035 | *
|
|---|
| 3036 | * @returns 0 on success, non-zero on failure.
|
|---|
| 3037 | * @param papszArgs The argument vector.
|
|---|
| 3038 | * @param papszEnv The environment vector (optional).
|
|---|
| 3039 | * @param fdErr File descriptor to hook up to stderr.
|
|---|
| 3040 | * @param pPid Where to return the pid.
|
|---|
| 3041 | * @param pfdReadPipe Where to return the read end of the pipe.
|
|---|
| 3042 | */
|
|---|
| 3043 | int MkWinChildCreateWithStdOutPipe(char **papszArgs, char **papszEnv, int fdErr, pid_t *pPid, int *pfdReadPipe)
|
|---|
| 3044 | {
|
|---|
| 3045 | /*
|
|---|
| 3046 | * Create the pipe.
|
|---|
| 3047 | */
|
|---|
| 3048 | HANDLE hReadPipe;
|
|---|
| 3049 | HANDLE hWritePipe;
|
|---|
| 3050 | if (CreatePipe(&hReadPipe, &hWritePipe, NULL, 0 /* default size */))
|
|---|
| 3051 | {
|
|---|
| 3052 | //if (SetHandleInformation(hWritePipe, HANDLE_FLAG_INHERIT /* clear */ , HANDLE_FLAG_INHERIT /*set*/))
|
|---|
| 3053 | {
|
|---|
| 3054 | int fdReadPipe = _open_osfhandle((intptr_t)hReadPipe, O_RDONLY);
|
|---|
| 3055 | if (fdReadPipe >= 0)
|
|---|
| 3056 | {
|
|---|
| 3057 | PWINCHILD pChild;
|
|---|
| 3058 | int rc;
|
|---|
| 3059 |
|
|---|
| 3060 | /*
|
|---|
| 3061 | * Get a handle for fdErr. Ignore failure.
|
|---|
| 3062 | */
|
|---|
| 3063 | HANDLE hStdErr = INVALID_HANDLE_VALUE;
|
|---|
| 3064 | if (fdErr >= 0)
|
|---|
| 3065 | {
|
|---|
| 3066 | HANDLE hNative = (HANDLE)_get_osfhandle(fdErr);
|
|---|
| 3067 | if (!DuplicateHandle(GetCurrentProcess(), hNative, GetCurrentProcess(),
|
|---|
| 3068 | &hStdErr, 0 /*DesiredAccess*/, TRUE /*fInherit*/, DUPLICATE_SAME_ACCESS))
|
|---|
| 3069 | {
|
|---|
| 3070 | ONN(error, NILF, _("DuplicateHandle failed on stderr descriptor (%u): %u\n"), fdErr, GetLastError());
|
|---|
| 3071 | hStdErr = INVALID_HANDLE_VALUE;
|
|---|
| 3072 | }
|
|---|
| 3073 | }
|
|---|
| 3074 |
|
|---|
| 3075 | /*
|
|---|
| 3076 | * Push it off to the worker thread.
|
|---|
| 3077 | */
|
|---|
| 3078 | pChild = mkWinChildNew(WINCHILDTYPE_PROCESS);
|
|---|
| 3079 | pChild->u.Process.papszArgs = mkWinChildCopyStringArray(papszArgs, &pChild->u.Process.cbArgsStrings);
|
|---|
| 3080 | pChild->u.Process.papszEnv = mkWinChildCopyStringArray(papszEnv ? papszEnv : environ,
|
|---|
| 3081 | &pChild->u.Process.cbEnvStrings);
|
|---|
| 3082 | //if (pszShell)
|
|---|
| 3083 | // pChild->u.Process.pszShell = xstrdup(pszShell);
|
|---|
| 3084 | pChild->u.Process.hStdOut = hWritePipe;
|
|---|
| 3085 | pChild->u.Process.hStdErr = hStdErr;
|
|---|
| 3086 | pChild->u.Process.fCloseStdErr = TRUE;
|
|---|
| 3087 | pChild->u.Process.fCloseStdOut = TRUE;
|
|---|
| 3088 |
|
|---|
| 3089 | rc = mkWinChildPushToCareWorker(pChild, pPid);
|
|---|
| 3090 | if (rc == 0)
|
|---|
| 3091 | *pfdReadPipe = fdReadPipe;
|
|---|
| 3092 | else
|
|---|
| 3093 | {
|
|---|
| 3094 | ON(error, NILF, _("mkWinChildPushToCareWorker failed on pipe: %d\n"), rc);
|
|---|
| 3095 | close(fdReadPipe);
|
|---|
| 3096 | *pfdReadPipe = -1;
|
|---|
| 3097 | *pPid = -1;
|
|---|
| 3098 | }
|
|---|
| 3099 | return rc;
|
|---|
| 3100 | }
|
|---|
| 3101 |
|
|---|
| 3102 | ON(error, NILF, _("_open_osfhandle failed on pipe: %u\n"), errno);
|
|---|
| 3103 | }
|
|---|
| 3104 | //else
|
|---|
| 3105 | // ON(error, NILF, _("SetHandleInformation failed on pipe: %u\n"), GetLastError());
|
|---|
| 3106 | if (hReadPipe != INVALID_HANDLE_VALUE)
|
|---|
| 3107 | CloseHandle(hReadPipe);
|
|---|
| 3108 | CloseHandle(hWritePipe);
|
|---|
| 3109 | }
|
|---|
| 3110 | else
|
|---|
| 3111 | ON(error, NILF, _("CreatePipe failed: %u\n"), GetLastError());
|
|---|
| 3112 | *pfdReadPipe = -1;
|
|---|
| 3113 | *pPid = -1;
|
|---|
| 3114 | return -1;
|
|---|
| 3115 | }
|
|---|
| 3116 |
|
|---|
| 3117 | #ifdef KMK
|
|---|
| 3118 |
|
|---|
| 3119 | /**
|
|---|
| 3120 | * Interface used by kmkbuiltin.c for executing builtin commands on threads.
|
|---|
| 3121 | *
|
|---|
| 3122 | * @returns 0 on success, windows status code on failure.
|
|---|
| 3123 | * @param pBuiltIn The kmk built-in command entry.
|
|---|
| 3124 | * @param cArgs The number of arguments in papszArgs.
|
|---|
| 3125 | * @param papszArgs The argument vector.
|
|---|
| 3126 | * @param papszEnv The environment vector, optional.
|
|---|
| 3127 | * @param pMkChild The make child structure.
|
|---|
| 3128 | * @param pPid Where to return the pid.
|
|---|
| 3129 | */
|
|---|
| 3130 | int MkWinChildCreateBuiltIn(PCKMKBUILTINENTRY pBuiltIn, int cArgs, char **papszArgs, char **papszEnv,
|
|---|
| 3131 | struct child *pMkChild, pid_t *pPid)
|
|---|
| 3132 | {
|
|---|
| 3133 | size_t cbIgnored;
|
|---|
| 3134 | PWINCHILD pChild = mkWinChildNew(WINCHILDTYPE_BUILT_IN);
|
|---|
| 3135 | pChild->pMkChild = pMkChild;
|
|---|
| 3136 | pChild->u.BuiltIn.pBuiltIn = pBuiltIn;
|
|---|
| 3137 | pChild->u.BuiltIn.cArgs = cArgs;
|
|---|
| 3138 | pChild->u.BuiltIn.papszArgs = mkWinChildCopyStringArray(papszArgs, &cbIgnored);
|
|---|
| 3139 | pChild->u.BuiltIn.papszEnv = papszEnv ? mkWinChildCopyStringArray(papszEnv, &cbIgnored) : NULL;
|
|---|
| 3140 | return mkWinChildPushToCareWorker(pChild, pPid);
|
|---|
| 3141 | }
|
|---|
| 3142 |
|
|---|
| 3143 | /**
|
|---|
| 3144 | * Interface used by append.c for do the slow file system part.
|
|---|
| 3145 | *
|
|---|
| 3146 | * This will append the given buffer to the specified file and free the buffer.
|
|---|
| 3147 | *
|
|---|
| 3148 | * @returns 0 on success, windows status code on failure.
|
|---|
| 3149 | *
|
|---|
| 3150 | * @param pszFilename The name of the file to append to.
|
|---|
| 3151 | * @param ppszAppend What to append. The pointer pointed to is set to
|
|---|
| 3152 | * NULL once we've taken ownership of the buffer and
|
|---|
| 3153 | * promise to free it.
|
|---|
| 3154 | * @param cbAppend How much to append.
|
|---|
| 3155 | * @param fTruncate Whether to truncate the file before appending to it.
|
|---|
| 3156 | * @param pMkChild The make child structure.
|
|---|
| 3157 | * @param pPid Where to return the pid.
|
|---|
| 3158 | */
|
|---|
| 3159 | int MkWinChildCreateAppend(const char *pszFilename, char **ppszAppend, size_t cbAppend, int fTruncate,
|
|---|
| 3160 | struct child *pMkChild, pid_t *pPid)
|
|---|
| 3161 | {
|
|---|
| 3162 | size_t cbFilename = strlen(pszFilename) + 1;
|
|---|
| 3163 | PWINCHILD pChild = mkWinChildNew(WINCHILDTYPE_APPEND);
|
|---|
| 3164 | pChild->pMkChild = pMkChild;
|
|---|
| 3165 | pChild->u.Append.fTruncate = fTruncate;
|
|---|
| 3166 | pChild->u.Append.pszAppend = *ppszAppend;
|
|---|
| 3167 | pChild->u.Append.cbAppend = cbAppend;
|
|---|
| 3168 | pChild->u.Append.pszFilename = (char *)memcpy(xmalloc(cbFilename), pszFilename, cbFilename);
|
|---|
| 3169 | *ppszAppend = NULL;
|
|---|
| 3170 | return mkWinChildPushToCareWorker(pChild, pPid);
|
|---|
| 3171 | }
|
|---|
| 3172 |
|
|---|
| 3173 | /**
|
|---|
| 3174 | * Interface used by kSubmit.c for registering stuff to wait on.
|
|---|
| 3175 | *
|
|---|
| 3176 | * @returns 0 on success, windows status code on failure.
|
|---|
| 3177 | * @param hEvent The event object handle to wait on.
|
|---|
| 3178 | * @param pvSubmitWorker The argument to pass back to kSubmit to clean up.
|
|---|
| 3179 | * @param pStdOut Standard output pipe for the worker. Optional.
|
|---|
| 3180 | * @param pStdErr Standard error pipe for the worker. Optional.
|
|---|
| 3181 | * @param pMkChild The make child structure.
|
|---|
| 3182 | * @param pPid Where to return the pid.
|
|---|
| 3183 | */
|
|---|
| 3184 | int MkWinChildCreateSubmit(intptr_t hEvent, void *pvSubmitWorker, PWINCCWPIPE pStdOut, PWINCCWPIPE pStdErr,
|
|---|
| 3185 | struct child *pMkChild, pid_t *pPid)
|
|---|
| 3186 | {
|
|---|
| 3187 | PWINCHILD pChild = mkWinChildNew(WINCHILDTYPE_SUBMIT);
|
|---|
| 3188 | pChild->pMkChild = pMkChild;
|
|---|
| 3189 | pChild->u.Submit.hEvent = (HANDLE)hEvent;
|
|---|
| 3190 | pChild->u.Submit.pvSubmitWorker = pvSubmitWorker;
|
|---|
| 3191 | pChild->u.Submit.pStdOut = pStdOut;
|
|---|
| 3192 | pChild->u.Submit.pStdErr = pStdErr;
|
|---|
| 3193 | return mkWinChildPushToCareWorker(pChild, pPid);
|
|---|
| 3194 | }
|
|---|
| 3195 |
|
|---|
| 3196 | /**
|
|---|
| 3197 | * Interface used by redirect.c for registering stuff to wait on.
|
|---|
| 3198 | *
|
|---|
| 3199 | * @returns 0 on success, windows status code on failure.
|
|---|
| 3200 | * @param hProcess The process object to wait on.
|
|---|
| 3201 | * @param pPid Where to return the pid.
|
|---|
| 3202 | */
|
|---|
| 3203 | int MkWinChildCreateRedirect(intptr_t hProcess, pid_t *pPid)
|
|---|
| 3204 | {
|
|---|
| 3205 | PWINCHILD pChild = mkWinChildNew(WINCHILDTYPE_REDIRECT);
|
|---|
| 3206 | pChild->u.Redirect.hProcess = (HANDLE)hProcess;
|
|---|
| 3207 | return mkWinChildPushToCareWorker(pChild, pPid);
|
|---|
| 3208 | }
|
|---|
| 3209 |
|
|---|
| 3210 |
|
|---|
| 3211 | /**
|
|---|
| 3212 | * New interface used by redirect.c for spawning and waitin on a child.
|
|---|
| 3213 | *
|
|---|
| 3214 | * This interface is only used when kmk_builtin_redirect is already running on
|
|---|
| 3215 | * a worker thread.
|
|---|
| 3216 | *
|
|---|
| 3217 | * @returns exit status.
|
|---|
| 3218 | * @param pvWorker The worker instance.
|
|---|
| 3219 | * @param pszExecutable The executable image to run.
|
|---|
| 3220 | * @param papszArgs Argument vector.
|
|---|
| 3221 | * @param fQuotedArgv Whether the argument vector is already quoted and
|
|---|
| 3222 | * just need some space to be turned into a command
|
|---|
| 3223 | * line.
|
|---|
| 3224 | * @param papszEnvVars Environment vector.
|
|---|
| 3225 | * @param pszCwd The working directory of the child. Optional.
|
|---|
| 3226 | * @param pafReplace Which standard handles to replace. Maybe modified!
|
|---|
| 3227 | * @param pahReplace The replacement handles. Maybe modified!
|
|---|
| 3228 | *
|
|---|
| 3229 | */
|
|---|
| 3230 | int MkWinChildBuiltInExecChild(void *pvWorker, const char *pszExecutable, char **papszArgs, BOOL fQuotedArgv,
|
|---|
| 3231 | char **papszEnvVars, const char *pszCwd, BOOL pafReplace[3], HANDLE pahReplace[3])
|
|---|
| 3232 | {
|
|---|
| 3233 | PWINCHILDCAREWORKER pWorker = (PWINCHILDCAREWORKER)pvWorker;
|
|---|
| 3234 | WCHAR *pwszSearchPath = NULL;
|
|---|
| 3235 | WCHAR *pwszzEnvironment = NULL;
|
|---|
| 3236 | WCHAR *pwszCommandLine = NULL;
|
|---|
| 3237 | WCHAR *pwszImageName = NULL;
|
|---|
| 3238 | WCHAR *pwszCwd = NULL;
|
|---|
| 3239 | BOOL fNeedShell = FALSE;
|
|---|
| 3240 | PWINCHILD pChild;
|
|---|
| 3241 | int rc;
|
|---|
| 3242 | assert(pWorker->uMagic == WINCHILDCAREWORKER_MAGIC);
|
|---|
| 3243 | pChild = pWorker->pCurChild;
|
|---|
| 3244 | assert(pChild != NULL && pChild->uMagic == WINCHILD_MAGIC);
|
|---|
| 3245 |
|
|---|
| 3246 | /*
|
|---|
| 3247 | * Convert the CWD first since it's optional and we don't need to clean
|
|---|
| 3248 | * up anything here if it fails.
|
|---|
| 3249 | */
|
|---|
| 3250 | if (pszCwd)
|
|---|
| 3251 | {
|
|---|
| 3252 | size_t cchCwd = strlen(pszCwd);
|
|---|
| 3253 | int cwcCwd = MultiByteToWideChar(CP_ACP, 0 /*fFlags*/, pszCwd, cchCwd + 1, NULL, 0);
|
|---|
| 3254 | pwszCwd = xmalloc((cwcCwd + 1) * sizeof(WCHAR)); /* (+1 in case cwcCwd is 0) */
|
|---|
| 3255 | cwcCwd = MultiByteToWideChar(CP_ACP, 0 /*fFlags*/, pszCwd, cchCwd + 1, pwszCwd, cwcCwd + 1);
|
|---|
| 3256 | if (!cwcCwd)
|
|---|
| 3257 | {
|
|---|
| 3258 | rc = GetLastError();
|
|---|
| 3259 | MkWinChildError(pWorker, 1, _("MultiByteToWideChar failed to convert CWD (%s): %u\n"), pszCwd, (unsigned)rc);
|
|---|
| 3260 | return rc;
|
|---|
| 3261 | }
|
|---|
| 3262 | }
|
|---|
| 3263 |
|
|---|
| 3264 | /*
|
|---|
| 3265 | * Before we search for the image, we convert the environment so we don't
|
|---|
| 3266 | * have to traverse it twice to find the PATH.
|
|---|
| 3267 | */
|
|---|
| 3268 | rc = mkWinChildcareWorkerConvertEnvironment(pWorker, papszEnvVars ? papszEnvVars : environ, 0/*cbEnvStrings*/,
|
|---|
| 3269 | &pwszzEnvironment, &pwszSearchPath);
|
|---|
| 3270 | /*
|
|---|
| 3271 | * Find the executable and maybe checking if it's a shell script, then
|
|---|
| 3272 | * convert it to a command line.
|
|---|
| 3273 | */
|
|---|
| 3274 | if (rc == 0)
|
|---|
| 3275 | rc = mkWinChildcareWorkerFindImage(pWorker, pszExecutable, pwszSearchPath, pwszzEnvironment, NULL /*pszShell*/,
|
|---|
| 3276 | &pwszImageName, &fNeedShell, &pChild->fProbableClExe);
|
|---|
| 3277 | if (rc == 0)
|
|---|
| 3278 | {
|
|---|
| 3279 | assert(!fNeedShell);
|
|---|
| 3280 | if (!fQuotedArgv)
|
|---|
| 3281 | rc = mkWinChildcareWorkerConvertCommandline(pWorker, papszArgs, 0 /*fFlags*/, &pwszCommandLine);
|
|---|
| 3282 | else
|
|---|
| 3283 | rc = mkWinChildcareWorkerConvertQuotedArgvToCommandline(pWorker, papszArgs, &pwszCommandLine);
|
|---|
| 3284 |
|
|---|
| 3285 | /*
|
|---|
| 3286 | * Create the child process.
|
|---|
| 3287 | */
|
|---|
| 3288 | if (rc == 0)
|
|---|
| 3289 | {
|
|---|
| 3290 | HANDLE hProcess;
|
|---|
| 3291 | rc = mkWinChildcareWorkerCreateProcess(pWorker, pwszImageName, pwszCommandLine, pwszzEnvironment,
|
|---|
| 3292 | pwszCwd, pafReplace, pahReplace, TRUE /*fCatchOutput*/, &hProcess);
|
|---|
| 3293 | if (rc == 0)
|
|---|
| 3294 | {
|
|---|
| 3295 | /*
|
|---|
| 3296 | * Wait for the child to complete.
|
|---|
| 3297 | */
|
|---|
| 3298 | rc = mkWinChildcareWorkerWaitForProcess(pWorker, pChild, hProcess, pwszImageName, TRUE /*fCatchOutput*/);
|
|---|
| 3299 | CloseHandle(hProcess);
|
|---|
| 3300 | }
|
|---|
| 3301 | }
|
|---|
| 3302 | }
|
|---|
| 3303 |
|
|---|
| 3304 | free(pwszCwd);
|
|---|
| 3305 | free(pwszCommandLine);
|
|---|
| 3306 | free(pwszImageName);
|
|---|
| 3307 | free(pwszzEnvironment);
|
|---|
| 3308 |
|
|---|
| 3309 | return rc;
|
|---|
| 3310 | }
|
|---|
| 3311 |
|
|---|
| 3312 | #endif /* CONFIG_NEW_WIN_CHILDREN */
|
|---|
| 3313 |
|
|---|
| 3314 | /**
|
|---|
| 3315 | * Interface used to kill process when processing Ctrl-C and fatal errors.
|
|---|
| 3316 | *
|
|---|
| 3317 | * @returns 0 on success, -1 & errno on error.
|
|---|
| 3318 | * @param pid The process to kill (PWINCHILD).
|
|---|
| 3319 | * @param iSignal What to kill it with.
|
|---|
| 3320 | * @param pMkChild The make child structure for validation.
|
|---|
| 3321 | */
|
|---|
| 3322 | int MkWinChildKill(pid_t pid, int iSignal, struct child *pMkChild)
|
|---|
| 3323 | {
|
|---|
| 3324 | PWINCHILD pChild = (PWINCHILD)pid;
|
|---|
| 3325 | if (pChild)
|
|---|
| 3326 | {
|
|---|
| 3327 | assert(pChild->uMagic == WINCHILD_MAGIC);
|
|---|
| 3328 | if (pChild->uMagic == WINCHILD_MAGIC)
|
|---|
| 3329 | {
|
|---|
| 3330 | switch (pChild->enmType)
|
|---|
| 3331 | {
|
|---|
| 3332 | case WINCHILDTYPE_PROCESS:
|
|---|
| 3333 | assert(pChild->pMkChild == pMkChild);
|
|---|
| 3334 | TerminateProcess(pChild->u.Process.hProcess, DBG_TERMINATE_PROCESS);
|
|---|
| 3335 | pChild->iSignal = iSignal;
|
|---|
| 3336 | break;
|
|---|
| 3337 | #ifdef KMK
|
|---|
| 3338 | case WINCHILDTYPE_SUBMIT:
|
|---|
| 3339 | {
|
|---|
| 3340 | pChild->iSignal = iSignal;
|
|---|
| 3341 | SetEvent(pChild->u.Submit.hEvent);
|
|---|
| 3342 | break;
|
|---|
| 3343 | }
|
|---|
| 3344 |
|
|---|
| 3345 | case WINCHILDTYPE_REDIRECT:
|
|---|
| 3346 | TerminateProcess(pChild->u.Redirect.hProcess, DBG_TERMINATE_PROCESS);
|
|---|
| 3347 | pChild->iSignal = iSignal;
|
|---|
| 3348 | break;
|
|---|
| 3349 |
|
|---|
| 3350 | case WINCHILDTYPE_BUILT_IN:
|
|---|
| 3351 | break;
|
|---|
| 3352 |
|
|---|
| 3353 | #endif /* KMK */
|
|---|
| 3354 | default:
|
|---|
| 3355 | assert(0);
|
|---|
| 3356 | }
|
|---|
| 3357 | }
|
|---|
| 3358 | }
|
|---|
| 3359 | return -1;
|
|---|
| 3360 | }
|
|---|
| 3361 |
|
|---|
| 3362 | /**
|
|---|
| 3363 | * Wait for a child process to complete
|
|---|
| 3364 | *
|
|---|
| 3365 | * @returns 0 on success, windows error code on failure.
|
|---|
| 3366 | * @param fBlock Whether to block.
|
|---|
| 3367 | * @param pPid Where to return the pid if a child process
|
|---|
| 3368 | * completed. This is set to zero if none.
|
|---|
| 3369 | * @param piExitCode Where to return the exit code.
|
|---|
| 3370 | * @param piSignal Where to return the exit signal number.
|
|---|
| 3371 | * @param pfCoreDumped Where to return the core dumped indicator.
|
|---|
| 3372 | * @param ppMkChild Where to return the associated struct child pointer.
|
|---|
| 3373 | */
|
|---|
| 3374 | int MkWinChildWait(int fBlock, pid_t *pPid, int *piExitCode, int *piSignal, int *pfCoreDumped, struct child **ppMkChild)
|
|---|
| 3375 | {
|
|---|
| 3376 | PWINCHILD pChild;
|
|---|
| 3377 |
|
|---|
| 3378 | *pPid = 0;
|
|---|
| 3379 | *piExitCode = -222222;
|
|---|
| 3380 | *pfCoreDumped = 0;
|
|---|
| 3381 | *ppMkChild = NULL;
|
|---|
| 3382 |
|
|---|
| 3383 | /*
|
|---|
| 3384 | * Wait if necessary.
|
|---|
| 3385 | */
|
|---|
| 3386 | if (fBlock && !g_pTailCompletedChildren && g_cPendingChildren > 0)
|
|---|
| 3387 | {
|
|---|
| 3388 | DWORD dwStatus = WaitForSingleObject(g_hEvtWaitChildren, INFINITE);
|
|---|
| 3389 | if (dwStatus == WAIT_FAILED)
|
|---|
| 3390 | return (int)GetLastError();
|
|---|
| 3391 | }
|
|---|
| 3392 |
|
|---|
| 3393 | /*
|
|---|
| 3394 | * Try unlink the last child in the LIFO.
|
|---|
| 3395 | */
|
|---|
| 3396 | pChild = g_pTailCompletedChildren;
|
|---|
| 3397 | if (!pChild)
|
|---|
| 3398 | return 0;
|
|---|
| 3399 | pChild = mkWinChildDequeFromLifo(&g_pTailCompletedChildren, pChild);
|
|---|
| 3400 | assert(pChild);
|
|---|
| 3401 |
|
|---|
| 3402 | /*
|
|---|
| 3403 | * Set return values and ditch the child structure.
|
|---|
| 3404 | */
|
|---|
| 3405 | *pPid = pChild->pid;
|
|---|
| 3406 | *piExitCode = pChild->iExitCode;
|
|---|
| 3407 | *pfCoreDumped = pChild->fCoreDumped;
|
|---|
| 3408 | *ppMkChild = pChild->pMkChild;
|
|---|
| 3409 | switch (pChild->enmType)
|
|---|
| 3410 | {
|
|---|
| 3411 | case WINCHILDTYPE_PROCESS:
|
|---|
| 3412 | break;
|
|---|
| 3413 | #ifdef KMK
|
|---|
| 3414 | case WINCHILDTYPE_BUILT_IN:
|
|---|
| 3415 | case WINCHILDTYPE_APPEND:
|
|---|
| 3416 | case WINCHILDTYPE_SUBMIT:
|
|---|
| 3417 | case WINCHILDTYPE_REDIRECT:
|
|---|
| 3418 | break;
|
|---|
| 3419 | #endif /* KMK */
|
|---|
| 3420 | default:
|
|---|
| 3421 | assert(0);
|
|---|
| 3422 | }
|
|---|
| 3423 | mkWinChildDelete(pChild);
|
|---|
| 3424 |
|
|---|
| 3425 | #ifdef KMK
|
|---|
| 3426 | /* Flush the volatile directory cache. */
|
|---|
| 3427 | dir_cache_invalid_after_job();
|
|---|
| 3428 | #endif
|
|---|
| 3429 | return 0;
|
|---|
| 3430 | }
|
|---|
| 3431 |
|
|---|
| 3432 | /**
|
|---|
| 3433 | * Get the child completed event handle.
|
|---|
| 3434 | *
|
|---|
| 3435 | * Needed when w32os.c is waiting for a job token to become available, given
|
|---|
| 3436 | * that completed children is the typical source of these tokens (esp. for kmk).
|
|---|
| 3437 | *
|
|---|
| 3438 | * @returns Zero if no active children, event handle if waiting is required.
|
|---|
| 3439 | */
|
|---|
| 3440 | intptr_t MkWinChildGetCompleteEventHandle(void)
|
|---|
| 3441 | {
|
|---|
| 3442 | /* We don't return the handle if we've got completed children. This
|
|---|
| 3443 | is a safe guard against being called twice in a row without any
|
|---|
| 3444 | MkWinChildWait call inbetween. */
|
|---|
| 3445 | if (!g_pTailCompletedChildren)
|
|---|
| 3446 | return (intptr_t)g_hEvtWaitChildren;
|
|---|
| 3447 | return 0;
|
|---|
| 3448 | }
|
|---|
| 3449 |
|
|---|
| 3450 | /**
|
|---|
| 3451 | * Emulate execv() for restarting kmk after one ore more makefiles has been
|
|---|
| 3452 | * made.
|
|---|
| 3453 | *
|
|---|
| 3454 | * Does not return.
|
|---|
| 3455 | *
|
|---|
| 3456 | * @param papszArgs The arguments.
|
|---|
| 3457 | * @param papszEnv The environment.
|
|---|
| 3458 | */
|
|---|
| 3459 | void MkWinChildReExecMake(char **papszArgs, char **papszEnv)
|
|---|
| 3460 | {
|
|---|
| 3461 | PROCESS_INFORMATION ProcInfo;
|
|---|
| 3462 | STARTUPINFOW StartupInfo;
|
|---|
| 3463 | WCHAR *pwszCommandLine;
|
|---|
| 3464 | WCHAR *pwszzEnvironment;
|
|---|
| 3465 | WCHAR *pwszPathIgnored;
|
|---|
| 3466 | int rc;
|
|---|
| 3467 |
|
|---|
| 3468 | /*
|
|---|
| 3469 | * Get the executable name.
|
|---|
| 3470 | */
|
|---|
| 3471 | WCHAR wszImageName[MKWINCHILD_MAX_PATH];
|
|---|
| 3472 | DWORD cwcImageName = GetModuleFileNameW(GetModuleHandle(NULL), wszImageName, MKWINCHILD_MAX_PATH);
|
|---|
| 3473 | if (cwcImageName == 0)
|
|---|
| 3474 | ON(fatal, NILF, _("MkWinChildReExecMake: GetModuleFileName failed: %u\n"), GetLastError());
|
|---|
| 3475 |
|
|---|
| 3476 | /*
|
|---|
| 3477 | * Create the command line and environment.
|
|---|
| 3478 | */
|
|---|
| 3479 | rc = mkWinChildcareWorkerConvertCommandline(NULL, papszArgs, 0 /*fFlags*/, &pwszCommandLine);
|
|---|
| 3480 | if (rc != 0)
|
|---|
| 3481 | ON(fatal, NILF, _("MkWinChildReExecMake: mkWinChildcareWorkerConvertCommandline failed: %u\n"), rc);
|
|---|
| 3482 |
|
|---|
| 3483 | rc = mkWinChildcareWorkerConvertEnvironment(NULL, papszEnv ? papszEnv : environ, 0 /*cbEnvStrings*/,
|
|---|
| 3484 | &pwszzEnvironment, &pwszPathIgnored);
|
|---|
| 3485 | if (rc != 0)
|
|---|
| 3486 | ON(fatal, NILF, _("MkWinChildReExecMake: mkWinChildcareWorkerConvertEnvironment failed: %u\n"), rc);
|
|---|
| 3487 |
|
|---|
| 3488 |
|
|---|
| 3489 | /*
|
|---|
| 3490 | * Fill out the startup info and try create the process.
|
|---|
| 3491 | */
|
|---|
| 3492 | memset(&ProcInfo, 0, sizeof(ProcInfo));
|
|---|
| 3493 | memset(&StartupInfo, 0, sizeof(StartupInfo));
|
|---|
| 3494 | StartupInfo.cb = sizeof(StartupInfo);
|
|---|
| 3495 | GetStartupInfoW(&StartupInfo);
|
|---|
| 3496 | if (!CreateProcessW(wszImageName, pwszCommandLine, NULL /*pProcSecAttr*/, NULL /*pThreadSecAttr*/,
|
|---|
| 3497 | TRUE /*fInheritHandles*/, CREATE_UNICODE_ENVIRONMENT, pwszzEnvironment, NULL /*pwsz*/,
|
|---|
| 3498 | &StartupInfo, &ProcInfo))
|
|---|
| 3499 | ON(fatal, NILF, _("MkWinChildReExecMake: CreateProcessW failed: %u\n"), GetLastError());
|
|---|
| 3500 | CloseHandle(ProcInfo.hThread);
|
|---|
| 3501 |
|
|---|
| 3502 | /*
|
|---|
| 3503 | * Wait for it to complete and forward the status code to our parent.
|
|---|
| 3504 | */
|
|---|
| 3505 | for (;;)
|
|---|
| 3506 | {
|
|---|
| 3507 | DWORD dwExitCode = -2222;
|
|---|
| 3508 | DWORD dwStatus = WaitForSingleObject(ProcInfo.hProcess, INFINITE);
|
|---|
| 3509 | if ( dwStatus == WAIT_IO_COMPLETION
|
|---|
| 3510 | || dwStatus == WAIT_TIMEOUT /* whatever */)
|
|---|
| 3511 | continue; /* however unlikely, these aren't fatal. */
|
|---|
| 3512 |
|
|---|
| 3513 | /* Get the status code and terminate. */
|
|---|
| 3514 | if (dwStatus == WAIT_OBJECT_0)
|
|---|
| 3515 | {
|
|---|
| 3516 | if (!GetExitCodeProcess(ProcInfo.hProcess, &dwExitCode))
|
|---|
| 3517 | {
|
|---|
| 3518 | ON(fatal, NILF, _("MkWinChildReExecMake: GetExitCodeProcess failed: %u\n"), GetLastError());
|
|---|
| 3519 | dwExitCode = -2222;
|
|---|
| 3520 | }
|
|---|
| 3521 | }
|
|---|
| 3522 | else if (dwStatus)
|
|---|
| 3523 | dwExitCode = dwStatus;
|
|---|
| 3524 |
|
|---|
| 3525 | CloseHandle(ProcInfo.hProcess);
|
|---|
| 3526 | for (;;)
|
|---|
| 3527 | exit(dwExitCode);
|
|---|
| 3528 | }
|
|---|
| 3529 | }
|
|---|
| 3530 |
|
|---|
| 3531 | #ifdef WITH_RW_LOCK
|
|---|
| 3532 | /** Serialization with kmkbuiltin_redirect. */
|
|---|
| 3533 | void MkWinChildExclusiveAcquire(void)
|
|---|
| 3534 | {
|
|---|
| 3535 | AcquireSRWLockExclusive(&g_RWLock);
|
|---|
| 3536 | }
|
|---|
| 3537 |
|
|---|
| 3538 | /** Serialization with kmkbuiltin_redirect. */
|
|---|
| 3539 | void MkWinChildExclusiveRelease(void)
|
|---|
| 3540 | {
|
|---|
| 3541 | ReleaseSRWLockExclusive(&g_RWLock);
|
|---|
| 3542 | }
|
|---|
| 3543 | #endif /* WITH_RW_LOCK */
|
|---|
| 3544 |
|
|---|
| 3545 | /**
|
|---|
| 3546 | * Implementation of the CLOSE_ON_EXEC macro.
|
|---|
| 3547 | *
|
|---|
| 3548 | * @returns errno value.
|
|---|
| 3549 | * @param fd The file descriptor to hide from children.
|
|---|
| 3550 | */
|
|---|
| 3551 | int MkWinChildUnrelatedCloseOnExec(int fd)
|
|---|
| 3552 | {
|
|---|
| 3553 | if (fd >= 0)
|
|---|
| 3554 | {
|
|---|
| 3555 | HANDLE hNative = (HANDLE)_get_osfhandle(fd);
|
|---|
| 3556 | if (hNative != INVALID_HANDLE_VALUE && hNative != NULL)
|
|---|
| 3557 | {
|
|---|
| 3558 | if (SetHandleInformation(hNative, HANDLE_FLAG_INHERIT /*clear*/ , 0 /*set*/))
|
|---|
| 3559 | return 0;
|
|---|
| 3560 | }
|
|---|
| 3561 | return errno;
|
|---|
| 3562 | }
|
|---|
| 3563 | return EINVAL;
|
|---|
| 3564 | }
|
|---|
| 3565 |
|
|---|
