| 1 | /* $Id: winchildren.c 3185 2018-03-23 22:40:03Z bird $ */
|
|---|
| 2 | /** @file
|
|---|
| 3 | * Child process creation and management for kmk.
|
|---|
| 4 | */
|
|---|
| 5 |
|
|---|
| 6 | /*
|
|---|
| 7 | * Copyright (c) 2018 knut st. osmundsen <bird-kBuild-spamx@anduin.net>
|
|---|
| 8 | *
|
|---|
| 9 | * This file is part of kBuild.
|
|---|
| 10 | *
|
|---|
| 11 | * kBuild is free software; you can redistribute it and/or modify
|
|---|
| 12 | * it under the terms of the GNU General Public License as published by
|
|---|
| 13 | * the Free Software Foundation; either version 3 of the License, or
|
|---|
| 14 | * (at your option) any later version.
|
|---|
| 15 | *
|
|---|
| 16 | * kBuild is distributed in the hope that it will be useful,
|
|---|
| 17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|---|
| 18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|---|
| 19 | * GNU General Public License for more details.
|
|---|
| 20 | *
|
|---|
| 21 | * You should have received a copy of the GNU General Public License
|
|---|
| 22 | * along with kBuild. If not, see <http://www.gnu.org/licenses/>
|
|---|
| 23 | *
|
|---|
| 24 | */
|
|---|
| 25 |
|
|---|
| 26 | /* No GNU coding style here atm, convert if upstreamed. */
|
|---|
| 27 |
|
|---|
| 28 | /** @page pg_win_children Windows child process creation and managment
|
|---|
| 29 | *
|
|---|
| 30 | * This new implementation aims at addressing the following:
|
|---|
| 31 | *
|
|---|
| 32 | * 1. Speed up process creation by doing the expensive CreateProcess call
|
|---|
| 33 | * in a worker thread.
|
|---|
| 34 | *
|
|---|
| 35 | * 2. No 64 process limit imposed by WaitForMultipleObjects.
|
|---|
| 36 | *
|
|---|
| 37 | * 3. Better distribute jobs among processor groups.
|
|---|
| 38 | *
|
|---|
| 39 | * 4. Offloading more expensive kmkbuiltin operations to worker threads,
|
|---|
| 40 | * making the main thread focus on managing child processes.
|
|---|
| 41 | *
|
|---|
| 42 | * 5. Output synchronization using reusable pipes [not yet implemented].
|
|---|
| 43 | *
|
|---|
| 44 | *
|
|---|
| 45 | * To be quite honest, the first item (CreateProcess expense) didn't occur to me
|
|---|
| 46 | * at first and was more of a sideeffect discovered along the way. A test
|
|---|
| 47 | * rebuilding IPRT went from 4m52s to 3m19s on a 8 thread system.
|
|---|
| 48 | *
|
|---|
| 49 | * The 2nd and 3rd goals are related to newer build servers that have lots of
|
|---|
| 50 | * CPU threads and various Windows NT (aka NT OS/2 at the time) design choices
|
|---|
| 51 | * made in the late 1980ies.
|
|---|
| 52 | *
|
|---|
| 53 | * WaitForMultipleObjects does not support waiting for more than 64 objects,
|
|---|
| 54 | * unlike poll and select. This is just something everyone ends up having to
|
|---|
| 55 | * work around in the end.
|
|---|
| 56 | *
|
|---|
| 57 | * Affinity masks are uintptr_t sized, so 64-bit hosts can only manage 64
|
|---|
| 58 | * processors and 32-bit only 32. Workaround was introduced with Windows 7
|
|---|
| 59 | * (IIRC) and is called processor groups. The CPU threads are grouped into 1 or
|
|---|
| 60 | * more groups of up to 64 processors. Processes are generally scheduled to a
|
|---|
| 61 | * signle processor group at first, but threads may be changed to be scheduled
|
|---|
| 62 | * on different groups. This code will try distribute children evenly among the
|
|---|
| 63 | * processor groups, using a very simple algorithm (see details in code).
|
|---|
| 64 | *
|
|---|
| 65 | *
|
|---|
| 66 | * @todo Output buffering using pipes, finally making 'link' output readable.
|
|---|
| 67 | *
|
|---|
| 68 | *
|
|---|
| 69 | * @section sec_win_children_av Remarks on Microsoft Defender and other AV
|
|---|
| 70 | *
|
|---|
| 71 | * Part of the motivation for writing this code was horrible CPU utilization on
|
|---|
| 72 | * a brand new AMD Threadripper 1950X system with lots of memory and SSDs,
|
|---|
| 73 | * running 64-bit Windows 10 build 16299.
|
|---|
| 74 | *
|
|---|
| 75 | * Turns out Microsoft defender adds some overhead to CreateProcess
|
|---|
| 76 | * and other stuff:
|
|---|
| 77 | * - Old make with CreateProcess on main thread:
|
|---|
| 78 | * - With runtime defender enabled: 14 min 6 seconds
|
|---|
| 79 | * - With runtime defender disabled: 4 min 49 seconds
|
|---|
| 80 | * - New make with CreateProcess on worker thread (this code):
|
|---|
| 81 | * - With runtime defender enabled: 6 min 29 seconds
|
|---|
| 82 | * - With runtime defender disabled: 4 min 36 seconds
|
|---|
| 83 | * - With runtime defender disabled out dir only: 5 min 59 seconds
|
|---|
| 84 | *
|
|---|
| 85 | * See also kWorker / kSubmit for more bickering about AV & disk encryption.
|
|---|
| 86 | */
|
|---|
| 87 |
|
|---|
| 88 |
|
|---|
| 89 | /*********************************************************************************************************************************
|
|---|
| 90 | * Header Files *
|
|---|
| 91 | *********************************************************************************************************************************/
|
|---|
| 92 | #include "../makeint.h"
|
|---|
| 93 | #include "../job.h"
|
|---|
| 94 | #include "../filedef.h"
|
|---|
| 95 | #include "../debug.h"
|
|---|
| 96 | #include "../kmkbuiltin.h"
|
|---|
| 97 | #include "winchildren.h"
|
|---|
| 98 |
|
|---|
| 99 | #include <Windows.h>
|
|---|
| 100 | #include <Winternl.h>
|
|---|
| 101 | #include <assert.h>
|
|---|
| 102 | #include <process.h>
|
|---|
| 103 | #include <intrin.h>
|
|---|
| 104 |
|
|---|
| 105 | #include "nt/nt_child_inject_standard_handles.h"
|
|---|
| 106 |
|
|---|
| 107 |
|
|---|
| 108 | /*********************************************************************************************************************************
|
|---|
| 109 | * Defined Constants And Macros *
|
|---|
| 110 | *********************************************************************************************************************************/
|
|---|
| 111 | #define MKWINCHILD_MAX_PATH 1024
|
|---|
| 112 |
|
|---|
| 113 | /** Checks the UTF-16 environment variable pointed to is the PATH. */
|
|---|
| 114 | #define IS_PATH_ENV_VAR(a_cwcVar, a_pwszVar) \
|
|---|
| 115 | ( (a_cwcVar) >= 5 \
|
|---|
| 116 | && (a_pwszVar)[4] == L'=' \
|
|---|
| 117 | && ((a_pwszVar)[0] == L'P' || (a_pwszVar)[0] == L'p') \
|
|---|
| 118 | && ((a_pwszVar)[1] == L'A' || (a_pwszVar)[1] == L'a') \
|
|---|
| 119 | && ((a_pwszVar)[2] == L'T' || (a_pwszVar)[2] == L't') \
|
|---|
| 120 | && ((a_pwszVar)[3] == L'H' || (a_pwszVar)[3] == L'h') )
|
|---|
| 121 |
|
|---|
| 122 |
|
|---|
| 123 | /*********************************************************************************************************************************
|
|---|
| 124 | * Structures and Typedefs *
|
|---|
| 125 | *********************************************************************************************************************************/
|
|---|
| 126 | /**
|
|---|
| 127 | * Child process type.
|
|---|
| 128 | */
|
|---|
| 129 | typedef enum WINCHILDTYPE
|
|---|
| 130 | {
|
|---|
| 131 | WINCHILDTYPE_INVALID = 0,
|
|---|
| 132 | /** Normal child process. */
|
|---|
| 133 | WINCHILDTYPE_PROCESS,
|
|---|
| 134 | #ifdef KMK
|
|---|
| 135 | /** kmkbuiltin command. */
|
|---|
| 136 | WINCHILDTYPE_BUILT_IN,
|
|---|
| 137 | /** kmkbuiltin_append result write out. */
|
|---|
| 138 | WINCHILDTYPE_APPEND,
|
|---|
| 139 | /** kSubmit job. */
|
|---|
| 140 | WINCHILDTYPE_SUBMIT,
|
|---|
| 141 | /** kmk_redirect job. */
|
|---|
| 142 | WINCHILDTYPE_REDIRECT,
|
|---|
| 143 | #endif
|
|---|
| 144 | /** End of valid child types. */
|
|---|
| 145 | WINCHILDTYPE_END
|
|---|
| 146 | } WINCHILDTYPE;
|
|---|
| 147 |
|
|---|
| 148 |
|
|---|
| 149 | /** Pointer to a windows child process. */
|
|---|
| 150 | typedef struct WINCHILD *PWINCHILD;
|
|---|
| 151 | /**
|
|---|
| 152 | * Windows child process.
|
|---|
| 153 | */
|
|---|
| 154 | typedef struct WINCHILD
|
|---|
| 155 | {
|
|---|
| 156 | /** Magic / eyecatcher (WINCHILD_MAGIC). */
|
|---|
| 157 | ULONG uMagic;
|
|---|
| 158 | /** Child type. */
|
|---|
| 159 | WINCHILDTYPE enmType;
|
|---|
| 160 | /** Pointer to the next child process. */
|
|---|
| 161 | PWINCHILD pNext;
|
|---|
| 162 | /** The pid for this child. */
|
|---|
| 163 | pid_t pid;
|
|---|
| 164 | /** The make child structure associated with this child. */
|
|---|
| 165 | struct child *pMkChild;
|
|---|
| 166 |
|
|---|
| 167 | /** The process exit code. */
|
|---|
| 168 | int iExitCode;
|
|---|
| 169 | /** Kill signal, in case we or someone else killed it. */
|
|---|
| 170 | int iSignal;
|
|---|
| 171 | /** Set if core was dumped. */
|
|---|
| 172 | int fCoreDumped;
|
|---|
| 173 |
|
|---|
| 174 | /** Type specific data. */
|
|---|
| 175 | union
|
|---|
| 176 | {
|
|---|
| 177 | /** Data for WINCHILDTYPE_PROCESS. */
|
|---|
| 178 | struct
|
|---|
| 179 | {
|
|---|
| 180 | /** Argument vector (single allocation, strings following array). */
|
|---|
| 181 | char **papszArgs;
|
|---|
| 182 | /** Length of the argument strings. */
|
|---|
| 183 | size_t cbArgsStrings;
|
|---|
| 184 | /** Environment vector. Only a copy if fEnvIsCopy is set. */
|
|---|
| 185 | char **papszEnv;
|
|---|
| 186 | /** If we made a copy of the environment, this is the size of the
|
|---|
| 187 | * strings and terminator string (not in array). This is done to
|
|---|
| 188 | * speed up conversion, since MultiByteToWideChar can handle '\0'. */
|
|---|
| 189 | size_t cbEnvStrings;
|
|---|
| 190 | /** The make shell to use (copy). */
|
|---|
| 191 | char *pszShell;
|
|---|
| 192 | /** Handle to use for standard out. */
|
|---|
| 193 | HANDLE hStdOut;
|
|---|
| 194 | /** Handle to use for standard out. */
|
|---|
| 195 | HANDLE hStdErr;
|
|---|
| 196 | /** Whether to close hStdOut after creating the process. */
|
|---|
| 197 | BOOL fCloseStdOut;
|
|---|
| 198 | /** Whether to close hStdErr after creating the process. */
|
|---|
| 199 | BOOL fCloseStdErr;
|
|---|
| 200 |
|
|---|
| 201 | /** Child process handle. */
|
|---|
| 202 | HANDLE hProcess;
|
|---|
| 203 | } Process;
|
|---|
| 204 |
|
|---|
| 205 | /** Data for WINCHILDTYPE_BUILT_IN. */
|
|---|
| 206 | struct
|
|---|
| 207 | {
|
|---|
| 208 | /** The built-in command. */
|
|---|
| 209 | PCKMKBUILTINENTRY pBuiltIn;
|
|---|
| 210 | /** Number of arguments. */
|
|---|
| 211 | int cArgs;
|
|---|
| 212 | /** Argument vector (single allocation, strings following array). */
|
|---|
| 213 | char **papszArgs;
|
|---|
| 214 | /** Environment vector. Only a copy if fEnvIsCopy is set. */
|
|---|
| 215 | char **papszEnv;
|
|---|
| 216 | } BuiltIn;
|
|---|
| 217 |
|
|---|
| 218 | /** Data for WINCHILDTYPE_APPEND. */
|
|---|
| 219 | struct
|
|---|
| 220 | {
|
|---|
| 221 | /** The filename. */
|
|---|
| 222 | char *pszFilename;
|
|---|
| 223 | /** How much to append. */
|
|---|
| 224 | size_t cbAppend;
|
|---|
| 225 | /** What to append. */
|
|---|
| 226 | char *pszAppend;
|
|---|
| 227 | /** Whether to truncate the file. */
|
|---|
| 228 | int fTruncate;
|
|---|
| 229 | } Append;
|
|---|
| 230 |
|
|---|
| 231 | /** Data for WINCHILDTYPE_SUBMIT. */
|
|---|
| 232 | struct
|
|---|
| 233 | {
|
|---|
| 234 | /** The event we're to wait on (hooked up to a pipe) */
|
|---|
| 235 | HANDLE hEvent;
|
|---|
| 236 | /** Parameter for the cleanup callback. */
|
|---|
| 237 | void *pvSubmitWorker;
|
|---|
| 238 | } Submit;
|
|---|
| 239 |
|
|---|
| 240 | /** Data for WINCHILDTYPE_REDIRECT. */
|
|---|
| 241 | struct
|
|---|
| 242 | {
|
|---|
| 243 | /** Child process handle. */
|
|---|
| 244 | HANDLE hProcess;
|
|---|
| 245 | } Redirect;
|
|---|
| 246 | } u;
|
|---|
| 247 |
|
|---|
| 248 | } WINCHILD;
|
|---|
| 249 | /** WINCHILD::uMagic value. */
|
|---|
| 250 | #define WINCHILD_MAGIC 0xbabebabeU
|
|---|
| 251 |
|
|---|
| 252 |
|
|---|
| 253 | /**
|
|---|
| 254 | * Data for a windows childcare worker thread.
|
|---|
| 255 | *
|
|---|
| 256 | * We use one worker thread per child, reusing the threads when possible.
|
|---|
| 257 | *
|
|---|
| 258 | * This setup helps avoid the 64-bit handle with the WaitForMultipleObject API.
|
|---|
| 259 | *
|
|---|
| 260 | * It also helps using all CPUs on systems with more than one CPU group
|
|---|
| 261 | * (typically systems with more than 64 CPU threads or/and multiple sockets, or
|
|---|
| 262 | * special configs).
|
|---|
| 263 | *
|
|---|
| 264 | * This helps facilitates using pipes for collecting output child rather
|
|---|
| 265 | * than temporary files. Pipes doesn't involve NTFS and can easily be reused.
|
|---|
| 266 | *
|
|---|
| 267 | * Finally, kBuild specific, this allows running kmkbuiltin_xxxx commands in
|
|---|
| 268 | * threads.
|
|---|
| 269 | */
|
|---|
| 270 | typedef struct WINCHILDCAREWORKER
|
|---|
| 271 | {
|
|---|
| 272 | /** Magic / eyecatcher (WINCHILDCAREWORKER_MAGIC). */
|
|---|
| 273 | ULONG uMagic;
|
|---|
| 274 | /** The processor group for this worker. */
|
|---|
| 275 | unsigned int iProcessorGroup;
|
|---|
| 276 | /** The thread ID. */
|
|---|
| 277 | unsigned int tid;
|
|---|
| 278 | /** The thread handle. */
|
|---|
| 279 | HANDLE hThread;
|
|---|
| 280 | /** The event the thread is idling on. */
|
|---|
| 281 | HANDLE hEvtIdle;
|
|---|
| 282 | /** Pointer to the current child. */
|
|---|
| 283 | PWINCHILD volatile pCurChild;
|
|---|
| 284 | /** List of children pending execution on this worker.
|
|---|
| 285 | * This is updated atomitically just like g_pTailCompletedChildren. */
|
|---|
| 286 | PWINCHILD volatile pTailTodoChildren;
|
|---|
| 287 | /** TRUE if idle, FALSE if not. */
|
|---|
| 288 | long volatile fIdle;
|
|---|
| 289 | } WINCHILDCAREWORKER;
|
|---|
| 290 | /** Pointer to a childcare worker thread. */
|
|---|
| 291 | typedef WINCHILDCAREWORKER *PWINCHILDCAREWORKER;
|
|---|
| 292 | /** WINCHILD::uMagic value. */
|
|---|
| 293 | #define WINCHILDCAREWORKER_MAGIC 0xdad0dad0U
|
|---|
| 294 |
|
|---|
| 295 |
|
|---|
| 296 | /*********************************************************************************************************************************
|
|---|
| 297 | * Global Variables *
|
|---|
| 298 | *********************************************************************************************************************************/
|
|---|
| 299 | /** Whether it's initialized or not. */
|
|---|
| 300 | static BOOL g_fInitialized = FALSE;
|
|---|
| 301 | /** Set when we're shutting down everything. */
|
|---|
| 302 | static BOOL volatile g_fShutdown = FALSE;
|
|---|
| 303 | /** Event used to wait for children. */
|
|---|
| 304 | static HANDLE g_hEvtWaitChildren = INVALID_HANDLE_VALUE;
|
|---|
| 305 | /** Number of childcare workers currently in g_papChildCareworkers. */
|
|---|
| 306 | static unsigned g_cChildCareworkers = 0;
|
|---|
| 307 | /** Maximum number of childcare workers in g_papChildCareworkers. */
|
|---|
| 308 | static unsigned g_cChildCareworkersMax = 0;
|
|---|
| 309 | /** Pointer to childcare workers. */
|
|---|
| 310 | static PWINCHILDCAREWORKER *g_papChildCareworkers = NULL;
|
|---|
| 311 | /** The group index for the worker allocator.
|
|---|
| 312 | * This is ever increasing and must be modded by g_cProcessorGroups. */
|
|---|
| 313 | static unsigned g_idxProcessorGroupAllocator = 0;
|
|---|
| 314 | /** The processor in group index for the worker allocator. */
|
|---|
| 315 | static unsigned g_idxProcessorInGroupAllocator = 0;
|
|---|
| 316 | /** Number of processor groups in the system. */
|
|---|
| 317 | static unsigned g_cProcessorGroups = 1;
|
|---|
| 318 | /** Array detailing how many active processors there are in each group. */
|
|---|
| 319 | static unsigned const *g_pacProcessorsInGroup = &g_cProcessorGroups;
|
|---|
| 320 | /** Kernel32!GetActiveProcessorGroupCount */
|
|---|
| 321 | static WORD (WINAPI *g_pfnGetActiveProcessorGroupCount)(VOID);
|
|---|
| 322 | /** Kernel32!GetActiveProcessorCount */
|
|---|
| 323 | static DWORD (WINAPI *g_pfnGetActiveProcessorCount)(WORD);
|
|---|
| 324 | /** Kernel32!SetThreadGroupAffinity */
|
|---|
| 325 | static BOOL (WINAPI *g_pfnSetThreadGroupAffinity)(HANDLE, CONST GROUP_AFFINITY *, GROUP_AFFINITY *);
|
|---|
| 326 | /** NTDLL!NtQueryInformationProcess */
|
|---|
| 327 | static NTSTATUS (NTAPI *g_pfnNtQueryInformationProcess)(HANDLE, PROCESSINFOCLASS, PVOID, ULONG, PULONG);
|
|---|
| 328 | /** Set if the windows host is 64-bit. */
|
|---|
| 329 | static BOOL g_f64BitHost = (K_ARCH_BITS == 64);
|
|---|
| 330 | /** Windows version info.
|
|---|
| 331 | * @note Putting this before the volatile stuff, hoping to keep it in a
|
|---|
| 332 | * different cache line than the static bits above. */
|
|---|
| 333 | static OSVERSIONINFOA g_VersionInfo = { sizeof(g_VersionInfo), 4, 0, 1381, VER_PLATFORM_WIN32_NT, {0} };
|
|---|
| 334 |
|
|---|
| 335 | /** Children that has been completed.
|
|---|
| 336 | * This is updated atomically, pushing completed children in LIFO fashion
|
|---|
| 337 | * (thus 'tail'), then hitting g_hEvtWaitChildren if head. */
|
|---|
| 338 | static PWINCHILD volatile g_pTailCompletedChildren = NULL;
|
|---|
| 339 |
|
|---|
| 340 | /** Number of idle pending children.
|
|---|
| 341 | * This is updated before g_hEvtWaitChildren is signalled. */
|
|---|
| 342 | static unsigned volatile g_cPendingChildren = 0;
|
|---|
| 343 |
|
|---|
| 344 | /** Number of idle childcare worker threads. */
|
|---|
| 345 | static unsigned volatile g_cIdleChildcareWorkers = 0;
|
|---|
| 346 | /** Index of the last idle child careworker (just a hint). */
|
|---|
| 347 | static unsigned volatile g_idxLastChildcareWorker = 0;
|
|---|
| 348 |
|
|---|
| 349 | #ifdef WITH_RW_LOCK
|
|---|
| 350 | /** RW lock for serializing kmkbuiltin_redirect and CreateProcess. */
|
|---|
| 351 | static SRWLOCK g_RWLock;
|
|---|
| 352 | #endif
|
|---|
| 353 |
|
|---|
| 354 |
|
|---|
| 355 | #if K_ARCH_BITS == 32 && !defined(_InterlockedCompareExchangePointer)
|
|---|
| 356 | /** _InterlockedCompareExchangePointer is missing? (VS2010) */
|
|---|
| 357 | K_INLINE void *_InterlockedCompareExchangePointer(void * volatile *ppvDst, void *pvNew, void *pvOld)
|
|---|
| 358 | {
|
|---|
| 359 | return (void *)_InterlockedCompareExchange((long volatile *)ppvDst, (intptr_t)pvNew, (intptr_t)pvOld);
|
|---|
| 360 | }
|
|---|
| 361 | #endif
|
|---|
| 362 |
|
|---|
| 363 |
|
|---|
| 364 | /**
|
|---|
| 365 | * Initializes the windows child module.
|
|---|
| 366 | *
|
|---|
| 367 | * @param cJobSlots The number of job slots.
|
|---|
| 368 | */
|
|---|
| 369 | void MkWinChildInit(unsigned int cJobSlots)
|
|---|
| 370 | {
|
|---|
| 371 | HMODULE hmod;
|
|---|
| 372 |
|
|---|
| 373 | /*
|
|---|
| 374 | * Figure out how many childcare workers first.
|
|---|
| 375 | */
|
|---|
| 376 | static unsigned int const s_cMaxWorkers = 4096;
|
|---|
| 377 | unsigned cWorkers;
|
|---|
| 378 | if (cJobSlots >= 1 && cJobSlots < s_cMaxWorkers)
|
|---|
| 379 | cWorkers = cJobSlots;
|
|---|
| 380 | else
|
|---|
| 381 | cWorkers = s_cMaxWorkers;
|
|---|
| 382 |
|
|---|
| 383 | /*
|
|---|
| 384 | * Allocate the array and the child completed event object.
|
|---|
| 385 | */
|
|---|
| 386 | g_papChildCareworkers = (PWINCHILDCAREWORKER *)xcalloc(cWorkers * sizeof(g_papChildCareworkers[0]));
|
|---|
| 387 | g_cChildCareworkersMax = cWorkers;
|
|---|
| 388 |
|
|---|
| 389 | g_hEvtWaitChildren = CreateEvent(NULL, FALSE /*fManualReset*/, FALSE /*fInitialState*/, NULL /*pszName*/);
|
|---|
| 390 | if (!g_hEvtWaitChildren)
|
|---|
| 391 | fatal(NILF, INTSTR_LENGTH, _("MkWinChildInit: CreateEvent failed: %u"), GetLastError());
|
|---|
| 392 |
|
|---|
| 393 | /*
|
|---|
| 394 | * NTDLL imports that we need.
|
|---|
| 395 | */
|
|---|
| 396 | hmod = GetModuleHandleA("NTDLL.DLL");
|
|---|
| 397 | *(FARPROC *)&g_pfnNtQueryInformationProcess = GetProcAddress(hmod, "NtQueryInformationProcess");
|
|---|
| 398 | if (!g_pfnNtQueryInformationProcess)
|
|---|
| 399 | fatal(NILF, 0, _("MkWinChildInit: NtQueryInformationProcess not found"));
|
|---|
| 400 |
|
|---|
| 401 | #if K_ARCH_BITS == 32
|
|---|
| 402 | /*
|
|---|
| 403 | * Initialize g_f64BitHost.
|
|---|
| 404 | */
|
|---|
| 405 | if (!IsWow64Process(GetCurrentProcess(), &g_f64BitHost))
|
|---|
| 406 | fatal(NILF, INTSTR_LENGTH, _("MkWinChildInit: IsWow64Process failed: %u"), GetLastError());
|
|---|
| 407 | #elif K_ARCH_BITS == 64
|
|---|
| 408 | assert(g_f64BitHost);
|
|---|
| 409 | #else
|
|---|
| 410 | # error "K_ARCH_BITS is bad/missing"
|
|---|
| 411 | #endif
|
|---|
| 412 |
|
|---|
| 413 | /*
|
|---|
| 414 | * Figure out how many processor groups there are.
|
|---|
| 415 | * For that we need to first figure the windows version.
|
|---|
| 416 | */
|
|---|
| 417 | if (!GetVersionExA(&g_VersionInfo))
|
|---|
| 418 | {
|
|---|
| 419 | DWORD uRawVer = GetVersion();
|
|---|
| 420 | g_VersionInfo.dwMajorVersion = uRawVer & 0xff;
|
|---|
| 421 | g_VersionInfo.dwMinorVersion = (uRawVer >> 8) & 0xff;
|
|---|
| 422 | g_VersionInfo.dwBuildNumber = (uRawVer >> 16) & 0x7fff;
|
|---|
| 423 | }
|
|---|
| 424 | if (g_VersionInfo.dwMajorVersion >= 6)
|
|---|
| 425 | {
|
|---|
| 426 | hmod = GetModuleHandleA("KERNEL32.DLL");
|
|---|
| 427 | *(FARPROC *)&g_pfnGetActiveProcessorGroupCount = GetProcAddress(hmod, "GetActiveProcessorGroupCount");
|
|---|
| 428 | *(FARPROC *)&g_pfnGetActiveProcessorCount = GetProcAddress(hmod, "GetActiveProcessorCount");
|
|---|
| 429 | *(FARPROC *)&g_pfnSetThreadGroupAffinity = GetProcAddress(hmod, "SetThreadGroupAffinity");
|
|---|
| 430 | if ( g_pfnSetThreadGroupAffinity
|
|---|
| 431 | && g_pfnGetActiveProcessorCount
|
|---|
| 432 | && g_pfnGetActiveProcessorGroupCount)
|
|---|
| 433 | {
|
|---|
| 434 | unsigned int *pacProcessorsInGroup;
|
|---|
| 435 | unsigned iGroup;
|
|---|
| 436 | g_cProcessorGroups = g_pfnGetActiveProcessorGroupCount();
|
|---|
| 437 | if (g_cProcessorGroups == 0)
|
|---|
| 438 | g_cProcessorGroups = 1;
|
|---|
| 439 |
|
|---|
| 440 | pacProcessorsInGroup = (unsigned int *)xmalloc(sizeof(g_pacProcessorsInGroup[0]) * g_cProcessorGroups);
|
|---|
| 441 | g_pacProcessorsInGroup = pacProcessorsInGroup;
|
|---|
| 442 | for (iGroup = 0; iGroup < g_cProcessorGroups; iGroup++)
|
|---|
| 443 | pacProcessorsInGroup[iGroup] = g_pfnGetActiveProcessorCount(iGroup);
|
|---|
| 444 |
|
|---|
| 445 | /* We shift the starting group with the make nesting level as part of
|
|---|
| 446 | our very simple distribution strategy. */
|
|---|
| 447 | g_idxProcessorGroupAllocator = makelevel;
|
|---|
| 448 | }
|
|---|
| 449 | else
|
|---|
| 450 | {
|
|---|
| 451 | g_pfnSetThreadGroupAffinity = NULL;
|
|---|
| 452 | g_pfnGetActiveProcessorCount = NULL;
|
|---|
| 453 | g_pfnGetActiveProcessorGroupCount = NULL;
|
|---|
| 454 | }
|
|---|
| 455 | }
|
|---|
| 456 |
|
|---|
| 457 | #ifdef WITH_RW_LOCK
|
|---|
| 458 | /*
|
|---|
| 459 | * For serializing with standard file handle manipulation (kmkbuiltin_redirect).
|
|---|
| 460 | */
|
|---|
| 461 | InitializeSRWLock(&g_RWLock);
|
|---|
| 462 | #endif
|
|---|
| 463 |
|
|---|
| 464 | /*
|
|---|
| 465 | * This is dead code that was thought to fix a problem observed doing
|
|---|
| 466 | * `tcc.exe /c "kmk |& tee bld.log"` and leading to a crash in cl.exe
|
|---|
| 467 | * when spawned with fInheritHandles = FALSE, see hStdErr=NULL in the
|
|---|
| 468 | * child. However, it turns out this was probably caused by not clearing
|
|---|
| 469 | * the CRT file descriptor and handle table in the startup info.
|
|---|
| 470 | * Leaving the code here in case it comes in handy after all.
|
|---|
| 471 | */
|
|---|
| 472 | #if 0
|
|---|
| 473 | {
|
|---|
| 474 | struct
|
|---|
| 475 | {
|
|---|
| 476 | DWORD uStdHandle;
|
|---|
| 477 | HANDLE hHandle;
|
|---|
| 478 | } aHandles[3] = { { STD_INPUT_HANDLE, NULL }, { STD_OUTPUT_HANDLE, NULL }, { STD_ERROR_HANDLE, NULL } };
|
|---|
| 479 | int i;
|
|---|
| 480 |
|
|---|
| 481 | for (i = 0; i < 3; i++)
|
|---|
| 482 | aHandles[i].hHandle = GetStdHandle(aHandles[i].uStdHandle);
|
|---|
| 483 |
|
|---|
| 484 | for (i = 0; i < 3; i++)
|
|---|
| 485 | if ( aHandles[i].hHandle == NULL
|
|---|
| 486 | || aHandles[i].hHandle == INVALID_HANDLE_VALUE)
|
|---|
| 487 | {
|
|---|
| 488 | int fd = open("nul", _O_RDWR);
|
|---|
| 489 | if (fd >= 0)
|
|---|
| 490 | {
|
|---|
| 491 | if (_dup2(fd, i) >= 0)
|
|---|
| 492 | {
|
|---|
| 493 | assert((HANDLE)_get_osfhandle(i) != aHandles[i].hHandle);
|
|---|
| 494 | assert((HANDLE)_get_osfhandle(i) == GetStdHandle(aHandles[i].uStdHandle));
|
|---|
| 495 | }
|
|---|
| 496 | else
|
|---|
| 497 | ONNNS(fatal, NILF, "_dup2(%d('nul'), %d) failed: %u (%s)", fd, i, errno, strerror(errno));
|
|---|
| 498 | if (fd != i)
|
|---|
| 499 | close(fd);
|
|---|
| 500 | }
|
|---|
| 501 | else
|
|---|
| 502 | ONNS(fatal, NILF, "open(nul,RW) failed: %u (%s)", i, errno, strerror(errno));
|
|---|
| 503 | }
|
|---|
| 504 | else
|
|---|
| 505 | {
|
|---|
| 506 | int j;
|
|---|
| 507 | for (j = i + 1; j < 3; j++)
|
|---|
| 508 | if (aHandles[j].hHandle == aHandles[i].hHandle)
|
|---|
| 509 | {
|
|---|
| 510 | int fd = _dup(j);
|
|---|
| 511 | if (fd >= 0)
|
|---|
| 512 | {
|
|---|
| 513 | if (_dup2(fd, j) >= 0)
|
|---|
| 514 | {
|
|---|
| 515 | aHandles[j].hHandle = (HANDLE)_get_osfhandle(j);
|
|---|
| 516 | assert(aHandles[j].hHandle != aHandles[i].hHandle);
|
|---|
| 517 | assert(aHandles[j].hHandle == GetStdHandle(aHandles[j].uStdHandle));
|
|---|
| 518 | }
|
|---|
| 519 | else
|
|---|
| 520 | ONNNS(fatal, NILF, "_dup2(%d, %d) failed: %u (%s)", fd, j, errno, strerror(errno));
|
|---|
| 521 | if (fd != j)
|
|---|
| 522 | close(fd);
|
|---|
| 523 | }
|
|---|
| 524 | else
|
|---|
| 525 | ONNS(fatal, NILF, "_dup(%d) failed: %u (%s)", j, errno, strerror(errno));
|
|---|
| 526 | }
|
|---|
| 527 | }
|
|---|
| 528 | }
|
|---|
| 529 | #endif
|
|---|
| 530 | }
|
|---|
| 531 |
|
|---|
| 532 | /**
|
|---|
| 533 | * Used by mkWinChildcareWorkerThread() and MkWinChildWait() to get the head
|
|---|
| 534 | * child from a lifo (g_pTailCompletedChildren, pTailTodoChildren).
|
|---|
| 535 | *
|
|---|
| 536 | * @returns Head child.
|
|---|
| 537 | * @param ppTail Pointer to the child variable.
|
|---|
| 538 | * @param pChild Tail child.
|
|---|
| 539 | */
|
|---|
| 540 | static PWINCHILD mkWinChildDequeFromLifo(PWINCHILD volatile *ppTail, PWINCHILD pChild)
|
|---|
| 541 | {
|
|---|
| 542 | if (pChild->pNext)
|
|---|
| 543 | {
|
|---|
| 544 | PWINCHILD pPrev;
|
|---|
| 545 | do
|
|---|
| 546 | {
|
|---|
| 547 | pPrev = pChild;
|
|---|
| 548 | pChild = pChild->pNext;
|
|---|
| 549 | } while (pChild->pNext);
|
|---|
| 550 | pPrev->pNext = NULL;
|
|---|
| 551 | }
|
|---|
| 552 | else
|
|---|
| 553 | {
|
|---|
| 554 | PWINCHILD const pWantedChild = pChild;
|
|---|
| 555 | pChild = _InterlockedCompareExchangePointer(ppTail, NULL, pWantedChild);
|
|---|
| 556 | if (pChild != pWantedChild)
|
|---|
| 557 | {
|
|---|
| 558 | PWINCHILD pPrev;
|
|---|
| 559 | do
|
|---|
| 560 | {
|
|---|
| 561 | pPrev = pChild;
|
|---|
| 562 | pChild = pChild->pNext;
|
|---|
| 563 | } while (pChild->pNext);
|
|---|
| 564 | pPrev->pNext = NULL;
|
|---|
| 565 | assert(pChild == pWantedChild);
|
|---|
| 566 | }
|
|---|
| 567 | }
|
|---|
| 568 | return pChild;
|
|---|
| 569 | }
|
|---|
| 570 |
|
|---|
| 571 | /**
|
|---|
| 572 | * Duplicates the given UTF-16 string.
|
|---|
| 573 | *
|
|---|
| 574 | * @returns 0
|
|---|
| 575 | * @param pwszSrc The UTF-16 string to duplicate.
|
|---|
| 576 | * @param cwcSrc Length, may include the terminator.
|
|---|
| 577 | * @param ppwszDst Where to return the duplicate.
|
|---|
| 578 | */
|
|---|
| 579 | static int mkWinChildDuplicateUtf16String(const WCHAR *pwszSrc, size_t cwcSrc, WCHAR **ppwszDst)
|
|---|
| 580 | {
|
|---|
| 581 | size_t cb = sizeof(WCHAR) * cwcSrc;
|
|---|
| 582 | if (cwcSrc > 0 && pwszSrc[cwcSrc - 1] == L'\0')
|
|---|
| 583 | *ppwszDst = (WCHAR *)memcpy(xmalloc(cb), pwszSrc, cb);
|
|---|
| 584 | else
|
|---|
| 585 | {
|
|---|
| 586 | WCHAR *pwszDst = (WCHAR *)xmalloc(cb + sizeof(WCHAR));
|
|---|
| 587 | memcpy(pwszDst, pwszSrc, cb);
|
|---|
| 588 | pwszDst[cwcSrc] = L'\0';
|
|---|
| 589 | *ppwszDst = pwszDst;
|
|---|
| 590 | }
|
|---|
| 591 | return 0;
|
|---|
| 592 | }
|
|---|
| 593 |
|
|---|
| 594 | /**
|
|---|
| 595 | * Commmon worker for waiting on a child process and retrieving the exit code.
|
|---|
| 596 | *
|
|---|
| 597 | * @param pWorker The worker.
|
|---|
| 598 | * @param pChild The child.
|
|---|
| 599 | * @param hProcess The process handle.
|
|---|
| 600 | * @param pwszJob The job name.
|
|---|
| 601 | */
|
|---|
| 602 | static void mkWinChildcareWorkerWaitForProcess(PWINCHILDCAREWORKER pWorker, PWINCHILD pChild, HANDLE hProcess,
|
|---|
| 603 | WCHAR const *pwszJob)
|
|---|
| 604 | {
|
|---|
| 605 | DWORD const msStart = GetTickCount();
|
|---|
| 606 | DWORD msNextMsg = msStart + 15000;
|
|---|
| 607 | for (;;)
|
|---|
| 608 | {
|
|---|
| 609 | DWORD dwExitCode = -42;
|
|---|
| 610 | DWORD dwStatus = WaitForSingleObject(hProcess, 15001 /*ms*/);
|
|---|
| 611 | assert(dwStatus != WAIT_FAILED);
|
|---|
| 612 | if (dwStatus == WAIT_OBJECT_0)
|
|---|
| 613 | {
|
|---|
| 614 | DWORD dwExitCode = -42;
|
|---|
| 615 | if (GetExitCodeProcess(hProcess, &dwExitCode))
|
|---|
| 616 | {
|
|---|
| 617 | pChild->iExitCode = (int)dwExitCode;
|
|---|
| 618 | return;
|
|---|
| 619 | }
|
|---|
| 620 | }
|
|---|
| 621 | else if ( dwStatus == WAIT_TIMEOUT /* whatever */
|
|---|
| 622 | || dwStatus == WAIT_IO_COMPLETION)
|
|---|
| 623 | {
|
|---|
| 624 | DWORD msNow = GetTickCount();
|
|---|
| 625 | if (msNow >= msNextMsg)
|
|---|
| 626 | {
|
|---|
| 627 | if ( !pChild->pMkChild
|
|---|
| 628 | || !pChild->pMkChild->recursive) /* ignore make recursions */
|
|---|
| 629 | {
|
|---|
| 630 | if ( !pChild->pMkChild
|
|---|
| 631 | || !pChild->pMkChild->file
|
|---|
| 632 | || !pChild->pMkChild->file->name)
|
|---|
| 633 | printf("Pid %u ('%s') still running after %u seconds\n",
|
|---|
| 634 | GetProcessId(hProcess), pwszJob, (msNow - msStart) / 1000);
|
|---|
| 635 | else
|
|---|
| 636 | printf("Target '%s' (pid %u) still running after %u seconds\n",
|
|---|
| 637 | pChild->pMkChild->file->name, GetProcessId(hProcess), (msNow - msStart) / 1000);
|
|---|
| 638 | }
|
|---|
| 639 |
|
|---|
| 640 | /* After 15s, 30s, 60s, 120s, 180s, ... */
|
|---|
| 641 | if (msNextMsg == msStart + 15000)
|
|---|
| 642 | msNextMsg += 15000;
|
|---|
| 643 | else
|
|---|
| 644 | msNextMsg += 30000;
|
|---|
| 645 | }
|
|---|
| 646 | continue;
|
|---|
| 647 | }
|
|---|
| 648 |
|
|---|
| 649 | /* Something failed. */
|
|---|
| 650 | pChild->iExitCode = GetLastError();
|
|---|
| 651 | if (pChild->iExitCode == 0)
|
|---|
| 652 | pChild->iExitCode = -4242;
|
|---|
| 653 | return;
|
|---|
| 654 | }
|
|---|
| 655 | }
|
|---|
| 656 |
|
|---|
| 657 |
|
|---|
| 658 | /**
|
|---|
| 659 | * Closes standard handles that need closing before destruction.
|
|---|
| 660 | *
|
|---|
| 661 | * @param pChild The child (WINCHILDTYPE_PROCESS).
|
|---|
| 662 | */
|
|---|
| 663 | static void mkWinChildcareWorkerCloseStandardHandles(PWINCHILD pChild)
|
|---|
| 664 | {
|
|---|
| 665 | if ( pChild->u.Process.fCloseStdOut
|
|---|
| 666 | && pChild->u.Process.hStdOut != INVALID_HANDLE_VALUE)
|
|---|
| 667 | {
|
|---|
| 668 | CloseHandle(pChild->u.Process.hStdOut);
|
|---|
| 669 | pChild->u.Process.hStdOut = INVALID_HANDLE_VALUE;
|
|---|
| 670 | pChild->u.Process.fCloseStdOut = FALSE;
|
|---|
| 671 | }
|
|---|
| 672 | if ( pChild->u.Process.fCloseStdErr
|
|---|
| 673 | && pChild->u.Process.hStdErr != INVALID_HANDLE_VALUE)
|
|---|
| 674 | {
|
|---|
| 675 | CloseHandle(pChild->u.Process.hStdErr);
|
|---|
| 676 | pChild->u.Process.hStdErr = INVALID_HANDLE_VALUE;
|
|---|
| 677 | pChild->u.Process.fCloseStdErr = FALSE;
|
|---|
| 678 | }
|
|---|
| 679 | }
|
|---|
| 680 |
|
|---|
| 681 |
|
|---|
| 682 | /**
|
|---|
| 683 | * Does the actual process creation given.
|
|---|
| 684 | *
|
|---|
| 685 | * @returns 0 if there is anything to wait on, otherwise non-zero windows error.
|
|---|
| 686 | * @param pWorker The childcare worker.
|
|---|
| 687 | * @param pChild The child.
|
|---|
| 688 | * @param pwszImageName The image path.
|
|---|
| 689 | * @param pwszCommandLine The command line.
|
|---|
| 690 | * @param pwszzEnvironment The enviornment block.
|
|---|
| 691 | */
|
|---|
| 692 | static int mkWinChildcareWorkerCreateProcess(PWINCHILDCAREWORKER pWorker, PWINCHILD pChild, WCHAR const *pwszImageName,
|
|---|
| 693 | WCHAR const *pwszCommandLine, WCHAR const *pwszzEnvironment)
|
|---|
| 694 | {
|
|---|
| 695 | PROCESS_INFORMATION ProcInfo;
|
|---|
| 696 | STARTUPINFOW StartupInfo;
|
|---|
| 697 | DWORD fFlags = CREATE_UNICODE_ENVIRONMENT;
|
|---|
| 698 | BOOL const fHaveHandles = pChild->u.Process.hStdErr != INVALID_HANDLE_VALUE
|
|---|
| 699 | || pChild->u.Process.hStdOut != INVALID_HANDLE_VALUE;
|
|---|
| 700 | BOOL fRet;
|
|---|
| 701 | DWORD dwErr;
|
|---|
| 702 | #ifdef KMK
|
|---|
| 703 | extern int process_priority;
|
|---|
| 704 | #endif
|
|---|
| 705 |
|
|---|
| 706 | /*
|
|---|
| 707 | * Populate startup info.
|
|---|
| 708 | *
|
|---|
| 709 | * Turns out we can get away without passing TRUE for the inherit handles
|
|---|
| 710 | * parameter to CreateProcess when we're not using STARTF_USESTDHANDLES.
|
|---|
| 711 | * At least on NT, which is all worth caring about at this point + context IMO.
|
|---|
| 712 | *
|
|---|
| 713 | * Not inherting the handles is a good thing because it means we won't
|
|---|
| 714 | * accidentally end up with a pipe handle or such intended for a different
|
|---|
| 715 | * child process, potentially causing the EOF/HUP event to be delayed.
|
|---|
| 716 | *
|
|---|
| 717 | * Since the present handle inhertiance requirements only involves standard
|
|---|
| 718 | * output and error, we'll never set the inherit handles flag and instead
|
|---|
| 719 | * do manual handle duplication and planting.
|
|---|
| 720 | */
|
|---|
| 721 | memset(&StartupInfo, 0, sizeof(StartupInfo));
|
|---|
| 722 | StartupInfo.cb = sizeof(StartupInfo);
|
|---|
| 723 | GetStartupInfoW(&StartupInfo);
|
|---|
| 724 | StartupInfo.lpReserved2 = 0; /* No CRT file handle + descriptor info possible, sorry. */
|
|---|
| 725 | StartupInfo.cbReserved2 = 0;
|
|---|
| 726 | if (!fHaveHandles)
|
|---|
| 727 | StartupInfo.dwFlags &= ~STARTF_USESTDHANDLES;
|
|---|
| 728 | else
|
|---|
| 729 | {
|
|---|
| 730 | fFlags |= CREATE_SUSPENDED;
|
|---|
| 731 | StartupInfo.dwFlags &= ~STARTF_USESTDHANDLES;
|
|---|
| 732 | }
|
|---|
| 733 |
|
|---|
| 734 | /*
|
|---|
| 735 | * Flags.
|
|---|
| 736 | */
|
|---|
| 737 | #ifdef KMK
|
|---|
| 738 | switch (process_priority)
|
|---|
| 739 | {
|
|---|
| 740 | case 1: fFlags |= CREATE_SUSPENDED | IDLE_PRIORITY_CLASS; break;
|
|---|
| 741 | case 2: fFlags |= CREATE_SUSPENDED | BELOW_NORMAL_PRIORITY_CLASS; break;
|
|---|
| 742 | case 3: fFlags |= CREATE_SUSPENDED | NORMAL_PRIORITY_CLASS; break;
|
|---|
| 743 | case 4: fFlags |= CREATE_SUSPENDED | HIGH_PRIORITY_CLASS; break;
|
|---|
| 744 | case 5: fFlags |= CREATE_SUSPENDED | REALTIME_PRIORITY_CLASS; break;
|
|---|
| 745 | }
|
|---|
| 746 | #endif
|
|---|
| 747 | if (g_cProcessorGroups > 1)
|
|---|
| 748 | fFlags |= CREATE_SUSPENDED;
|
|---|
| 749 |
|
|---|
| 750 | /*
|
|---|
| 751 | * Try create the process.
|
|---|
| 752 | */
|
|---|
| 753 | DB(DB_JOBS, ("CreateProcessW(%ls, %ls,,, TRUE, %#x...)\n", pwszImageName, pwszCommandLine, fFlags));
|
|---|
| 754 | memset(&ProcInfo, 0, sizeof(ProcInfo));
|
|---|
| 755 | #ifdef WITH_RW_LOCK
|
|---|
| 756 | AcquireSRWLockShared(&g_RWLock);
|
|---|
| 757 | #endif
|
|---|
| 758 |
|
|---|
| 759 | fRet = CreateProcessW((WCHAR *)pwszImageName, (WCHAR *)pwszCommandLine, NULL /*pProcSecAttr*/, NULL /*pThreadSecAttr*/,
|
|---|
| 760 | FALSE /*fInheritHandles*/, fFlags, (WCHAR *)pwszzEnvironment, NULL /*pwsz*/, &StartupInfo, &ProcInfo);
|
|---|
| 761 | dwErr = GetLastError();
|
|---|
| 762 |
|
|---|
| 763 | #ifdef WITH_RW_LOCK
|
|---|
| 764 | ReleaseSRWLockShared(&g_RWLock);
|
|---|
| 765 | #endif
|
|---|
| 766 | if (fRet)
|
|---|
| 767 | pChild->u.Process.hProcess = ProcInfo.hProcess;
|
|---|
| 768 | else
|
|---|
| 769 | {
|
|---|
| 770 | fprintf(stderr, "CreateProcess(%ls) failed: %u\n", pwszImageName, dwErr);
|
|---|
| 771 | return pChild->iExitCode = (int)dwErr;
|
|---|
| 772 | }
|
|---|
| 773 |
|
|---|
| 774 | /*
|
|---|
| 775 | * If the child is suspended, we've got some adjustment work to be done.
|
|---|
| 776 | */
|
|---|
| 777 | dwErr = ERROR_SUCCESS;
|
|---|
| 778 | if (fFlags & CREATE_SUSPENDED)
|
|---|
| 779 | {
|
|---|
| 780 | /*
|
|---|
| 781 | * First do handle inhertiance as that's the most complicated.
|
|---|
| 782 | */
|
|---|
| 783 | if (fHaveHandles)
|
|---|
| 784 | {
|
|---|
| 785 | char szErrMsg[128];
|
|---|
| 786 | BOOL afReplace[3] =
|
|---|
| 787 | { FALSE, pChild->u.Process.hStdOut != INVALID_HANDLE_VALUE, pChild->u.Process.hStdErr != INVALID_HANDLE_VALUE };
|
|---|
| 788 | HANDLE ahChild[3] =
|
|---|
| 789 | { NULL, pChild->u.Process.hStdOut, pChild->u.Process.hStdErr };
|
|---|
| 790 |
|
|---|
| 791 | dwErr = nt_child_inject_standard_handles(ProcInfo.hProcess, afReplace, ahChild, szErrMsg, sizeof(szErrMsg));
|
|---|
| 792 | if (dwErr != 0)
|
|---|
| 793 | fprintf(stderr, "%s\n", szErrMsg);
|
|---|
| 794 | }
|
|---|
| 795 |
|
|---|
| 796 | /*
|
|---|
| 797 | * Assign processor group (ignore failure).
|
|---|
| 798 | */
|
|---|
| 799 | if (g_cProcessorGroups > 1)
|
|---|
| 800 | {
|
|---|
| 801 | GROUP_AFFINITY Affinity = { ~(ULONG_PTR)0, pWorker->iProcessorGroup, { 0, 0, 0 } };
|
|---|
| 802 | fRet = g_pfnSetThreadGroupAffinity(ProcInfo.hThread, &Affinity, NULL);
|
|---|
| 803 | assert(fRet);
|
|---|
| 804 | }
|
|---|
| 805 |
|
|---|
| 806 | #ifdef KMK
|
|---|
| 807 | /*
|
|---|
| 808 | * Set priority (ignore failure).
|
|---|
| 809 | */
|
|---|
| 810 | switch (process_priority)
|
|---|
| 811 | {
|
|---|
| 812 | case 1: fRet = SetThreadPriority(ProcInfo.hThread, THREAD_PRIORITY_IDLE); break;
|
|---|
| 813 | case 2: fRet = SetThreadPriority(ProcInfo.hThread, THREAD_PRIORITY_BELOW_NORMAL); break;
|
|---|
| 814 | case 3: fRet = SetThreadPriority(ProcInfo.hThread, THREAD_PRIORITY_NORMAL); break;
|
|---|
| 815 | case 4: fRet = SetThreadPriority(ProcInfo.hThread, THREAD_PRIORITY_HIGHEST); break;
|
|---|
| 816 | case 5: fRet = SetThreadPriority(ProcInfo.hThread, THREAD_PRIORITY_TIME_CRITICAL); break;
|
|---|
| 817 | default: fRet = TRUE;
|
|---|
| 818 | }
|
|---|
| 819 | assert(fRet);
|
|---|
| 820 | #endif
|
|---|
| 821 |
|
|---|
| 822 | /*
|
|---|
| 823 | * Resume the thread if the adjustments succeeded, otherwise kill it.
|
|---|
| 824 | */
|
|---|
| 825 | if (dwErr == ERROR_SUCCESS)
|
|---|
| 826 | {
|
|---|
| 827 | fRet = ResumeThread(ProcInfo.hThread);
|
|---|
| 828 | assert(fRet);
|
|---|
| 829 | if (!fRet)
|
|---|
| 830 | {
|
|---|
| 831 | dwErr = GetLastError();
|
|---|
| 832 | fprintf(stderr, "ResumeThread failed on child process: %u\n", dwErr);
|
|---|
| 833 | }
|
|---|
| 834 | }
|
|---|
| 835 | if (dwErr != ERROR_SUCCESS)
|
|---|
| 836 | TerminateProcess(ProcInfo.hProcess, dwErr);
|
|---|
| 837 | }
|
|---|
| 838 |
|
|---|
| 839 | /*
|
|---|
| 840 | * Close unnecessary handles.
|
|---|
| 841 | */
|
|---|
| 842 | mkWinChildcareWorkerCloseStandardHandles(pChild);
|
|---|
| 843 | CloseHandle(ProcInfo.hThread);
|
|---|
| 844 | return 0;
|
|---|
| 845 | }
|
|---|
| 846 |
|
|---|
| 847 |
|
|---|
| 848 | #define MKWCCWCMD_F_CYGWIN_SHELL 1
|
|---|
| 849 | #define MKWCCWCMD_F_MKS_SHELL 2
|
|---|
| 850 | #define MKWCCWCMD_F_HAVE_SH 4
|
|---|
| 851 | #define MKWCCWCMD_F_HAVE_KASH_C 8 /**< kmk_ash -c "..." */
|
|---|
| 852 |
|
|---|
| 853 | static int mkWinChildcareWorkerConvertCommandline(char **papszArgs, unsigned fFlags, WCHAR **ppwszCommandLine)
|
|---|
| 854 | {
|
|---|
| 855 | struct ARGINFO
|
|---|
| 856 | {
|
|---|
| 857 | size_t cchSrc;
|
|---|
| 858 | size_t cwcDst; /**< converted size w/o terminator. */
|
|---|
| 859 | size_t cwcDstExtra : 24; /**< Only set with fSlowly. */
|
|---|
| 860 | size_t fSlowly : 1;
|
|---|
| 861 | size_t fQuoteIt : 1;
|
|---|
| 862 | size_t fEndSlashes : 1; /**< if escapes needed for trailing backslashes. */
|
|---|
| 863 | size_t fExtraSpace : 1; /**< if kash -c "" needs an extra space before the quote. */
|
|---|
| 864 | } *paArgInfo;
|
|---|
| 865 | size_t cArgs;
|
|---|
| 866 | size_t i;
|
|---|
| 867 | size_t cwcNeeded;
|
|---|
| 868 | WCHAR *pwszDst;
|
|---|
| 869 | WCHAR *pwszCmdLine;
|
|---|
| 870 |
|
|---|
| 871 | /*
|
|---|
| 872 | * Count them first so we can allocate an info array of the stack.
|
|---|
| 873 | */
|
|---|
| 874 | cArgs = 0;
|
|---|
| 875 | while (papszArgs[cArgs] != NULL)
|
|---|
| 876 | cArgs++;
|
|---|
| 877 | paArgInfo = (struct ARGINFO *)alloca(sizeof(paArgInfo[0]) * cArgs);
|
|---|
| 878 |
|
|---|
| 879 | /*
|
|---|
| 880 | * Preprocess them and calculate the exact command line length.
|
|---|
| 881 | */
|
|---|
| 882 | cwcNeeded = 1;
|
|---|
| 883 | for (i = 0; i < cArgs; i++)
|
|---|
| 884 | {
|
|---|
| 885 | char *pszSrc = papszArgs[i];
|
|---|
| 886 | size_t cchSrc = strlen(pszSrc);
|
|---|
| 887 | paArgInfo[i].cchSrc = cchSrc;
|
|---|
| 888 | if (cchSrc == 0)
|
|---|
| 889 | {
|
|---|
| 890 | /* empty needs quoting. */
|
|---|
| 891 | paArgInfo[i].cwcDst = 2;
|
|---|
| 892 | paArgInfo[i].cwcDstExtra = 0;
|
|---|
| 893 | paArgInfo[i].fSlowly = 0;
|
|---|
| 894 | paArgInfo[i].fQuoteIt = 1;
|
|---|
| 895 | paArgInfo[i].fExtraSpace = 0;
|
|---|
| 896 | paArgInfo[i].fEndSlashes = 0;
|
|---|
| 897 | }
|
|---|
| 898 | else
|
|---|
| 899 | {
|
|---|
| 900 | const char *pszSpace = memchr(pszSrc, ' ', cchSrc);
|
|---|
| 901 | const char *pszTab = memchr(pszSrc, '\t', cchSrc);
|
|---|
| 902 | const char *pszDQuote = memchr(pszSrc, '"', cchSrc);
|
|---|
| 903 | const char *pszEscape = memchr(pszSrc, '\\', cchSrc);
|
|---|
| 904 | int cwcDst = MultiByteToWideChar(CP_ACP, 0 /*fFlags*/, pszSrc, cchSrc + 1, NULL, 0);
|
|---|
| 905 | if (cwcDst >= 0)
|
|---|
| 906 | --cwcDst;
|
|---|
| 907 | else
|
|---|
| 908 | {
|
|---|
| 909 | DWORD dwErr = GetLastError();
|
|---|
| 910 | fprintf(stderr, _("MultiByteToWideChar failed to convert argv[%u] (%s): %u\n"), i, pszSrc, dwErr);
|
|---|
| 911 | return dwErr;
|
|---|
| 912 | }
|
|---|
| 913 | #if 0
|
|---|
| 914 | if (!pszSpace && !pszTab && !pszDQuote && !pszEscape)
|
|---|
| 915 | {
|
|---|
| 916 | /* no special handling needed. */
|
|---|
| 917 | paArgInfo[i].cwcDst = cwcDst;
|
|---|
| 918 | paArgInfo[i].cwcDstExtra = 0;
|
|---|
| 919 | paArgInfo[i].fSlowly = 0;
|
|---|
| 920 | paArgInfo[i].fQuoteIt = 0;
|
|---|
| 921 | paArgInfo[i].fExtraSpace = 0;
|
|---|
| 922 | paArgInfo[i].fEndSlashes = 0;
|
|---|
| 923 | }
|
|---|
| 924 | else if (!pszDQuote && !pszEscape)
|
|---|
| 925 | {
|
|---|
| 926 | /* Just double quote it. */
|
|---|
| 927 | paArgInfo[i].cwcDst = cwcDst + 2;
|
|---|
| 928 | paArgInfo[i].cwcDstExtra = 0;
|
|---|
| 929 | paArgInfo[i].fSlowly = 0;
|
|---|
| 930 | paArgInfo[i].fQuoteIt = 1;
|
|---|
| 931 | paArgInfo[i].fExtraSpace = 0;
|
|---|
| 932 | paArgInfo[i].fEndSlashes = 0;
|
|---|
| 933 | }
|
|---|
| 934 | else
|
|---|
| 935 | #endif
|
|---|
| 936 | {
|
|---|
| 937 | /* Complicated, need to scan the string to figure out what to do. */
|
|---|
| 938 | size_t cwcDstExtra;
|
|---|
| 939 | int cBackslashes;
|
|---|
| 940 | char ch;
|
|---|
| 941 |
|
|---|
| 942 | paArgInfo[i].fQuoteIt = 0;
|
|---|
| 943 | paArgInfo[i].fSlowly = 1;
|
|---|
| 944 | paArgInfo[i].fExtraSpace = 0;
|
|---|
| 945 | paArgInfo[i].fEndSlashes = 0;
|
|---|
| 946 |
|
|---|
| 947 | cwcDstExtra = 0;
|
|---|
| 948 | cBackslashes = 0;
|
|---|
| 949 | while ((ch = *pszSrc++) != '\0')
|
|---|
| 950 | {
|
|---|
| 951 | switch (ch)
|
|---|
| 952 | {
|
|---|
| 953 | default:
|
|---|
| 954 | cBackslashes = 0;
|
|---|
| 955 | break;
|
|---|
| 956 |
|
|---|
| 957 | case '\\':
|
|---|
| 958 | cBackslashes++;
|
|---|
| 959 | break;
|
|---|
| 960 |
|
|---|
| 961 | case '"':
|
|---|
| 962 | if (fFlags & (MKWCCWCMD_F_CYGWIN_SHELL | MKWCCWCMD_F_MKS_SHELL))
|
|---|
| 963 | cwcDstExtra += 1;
|
|---|
| 964 | else
|
|---|
| 965 | cwcDstExtra += 1 + cBackslashes;
|
|---|
| 966 | break;
|
|---|
| 967 |
|
|---|
| 968 | case ' ':
|
|---|
| 969 | case '\t':
|
|---|
| 970 | if (!paArgInfo[i].fQuoteIt)
|
|---|
| 971 | {
|
|---|
| 972 | paArgInfo[i].fQuoteIt = 1;
|
|---|
| 973 | cwcDstExtra += 2;
|
|---|
| 974 | }
|
|---|
| 975 | cBackslashes = 0;
|
|---|
| 976 | break;
|
|---|
| 977 | }
|
|---|
| 978 | }
|
|---|
| 979 |
|
|---|
| 980 | if ( cBackslashes > 0
|
|---|
| 981 | && paArgInfo[i].fQuoteIt
|
|---|
| 982 | && !(fFlags & (MKWCCWCMD_F_CYGWIN_SHELL | MKWCCWCMD_F_MKS_SHELL)))
|
|---|
| 983 | {
|
|---|
| 984 | cwcDstExtra += cBackslashes;
|
|---|
| 985 | paArgInfo[i].fEndSlashes = 1;
|
|---|
| 986 | }
|
|---|
| 987 |
|
|---|
| 988 | paArgInfo[i].cwcDst = cwcDst + cwcDstExtra;
|
|---|
| 989 | paArgInfo[i].cwcDstExtra = cwcDstExtra;
|
|---|
| 990 | }
|
|---|
| 991 | }
|
|---|
| 992 |
|
|---|
| 993 | if ( (fFlags & MKWCCWCMD_F_HAVE_KASH_C)
|
|---|
| 994 | && paArgInfo[i].fQuoteIt)
|
|---|
| 995 | {
|
|---|
| 996 | paArgInfo[i].fExtraSpace = 1;
|
|---|
| 997 | paArgInfo[i].cwcDst++;
|
|---|
| 998 | paArgInfo[i].cwcDstExtra++;
|
|---|
| 999 | }
|
|---|
| 1000 |
|
|---|
| 1001 | cwcNeeded += (i != 0) + paArgInfo[i].cwcDst;
|
|---|
| 1002 | }
|
|---|
| 1003 |
|
|---|
| 1004 | /*
|
|---|
| 1005 | * Allocate the result buffer and do the actual conversion.
|
|---|
| 1006 | */
|
|---|
| 1007 | pwszDst = pwszCmdLine = (WCHAR *)xmalloc(sizeof(WCHAR) * cwcNeeded);
|
|---|
| 1008 | for (i = 0; i < cArgs; i++)
|
|---|
| 1009 | {
|
|---|
| 1010 | char *pszSrc = papszArgs[i];
|
|---|
| 1011 | size_t cwcDst = paArgInfo[i].cwcDst;
|
|---|
| 1012 |
|
|---|
| 1013 | if (i != 0)
|
|---|
| 1014 | *pwszDst++ = L' ';
|
|---|
| 1015 |
|
|---|
| 1016 | if (paArgInfo[i].fQuoteIt)
|
|---|
| 1017 | {
|
|---|
| 1018 | *pwszDst++ = L'"';
|
|---|
| 1019 | cwcDst -= 2;
|
|---|
| 1020 | }
|
|---|
| 1021 |
|
|---|
| 1022 | if (!paArgInfo[i].fSlowly)
|
|---|
| 1023 | {
|
|---|
| 1024 | int cwcDst2 = MultiByteToWideChar(CP_ACP, 0 /*fFlags*/, pszSrc, paArgInfo[i].cchSrc, pwszDst, cwcDst + 1);
|
|---|
| 1025 | assert(cwcDst2 >= 0);
|
|---|
| 1026 | pwszDst += cwcDst;
|
|---|
| 1027 | }
|
|---|
| 1028 | else
|
|---|
| 1029 | {
|
|---|
| 1030 | /* Do the conversion into the end of the output buffer, then move
|
|---|
| 1031 | it up to where it should be char by char. */
|
|---|
| 1032 | size_t cBackslashes;
|
|---|
| 1033 | size_t cwcLeft = paArgInfo[i].cwcDst - paArgInfo[i].cwcDstExtra;
|
|---|
| 1034 | WCHAR volatile *pwchSlowSrc = pwszDst + paArgInfo[i].cwcDstExtra;
|
|---|
| 1035 | WCHAR volatile *pwchSlowDst = pwszDst;
|
|---|
| 1036 | int cwcDst2 = MultiByteToWideChar(CP_ACP, 0 /*fFlags*/, pszSrc, paArgInfo[i].cchSrc,
|
|---|
| 1037 | (WCHAR *)pwchSlowSrc, cwcLeft + 1);
|
|---|
| 1038 | assert(cwcDst2 >= 0);
|
|---|
| 1039 |
|
|---|
| 1040 | cBackslashes = 0;
|
|---|
| 1041 | while (cwcLeft-- > 0)
|
|---|
| 1042 | {
|
|---|
| 1043 | WCHAR wcSrc = *pwchSlowSrc++;
|
|---|
| 1044 | if (wcSrc != L'\\' && wcSrc != L'"')
|
|---|
| 1045 | cBackslashes = 0;
|
|---|
| 1046 | else if (wcSrc == L'\\')
|
|---|
| 1047 | cBackslashes++;
|
|---|
| 1048 | else if ( (fFlags & (MKWCCWCMD_F_CYGWIN_SHELL | MKWCCWCMD_F_HAVE_SH))
|
|---|
| 1049 | == (MKWCCWCMD_F_CYGWIN_SHELL | MKWCCWCMD_F_HAVE_SH))
|
|---|
| 1050 | *pwchSlowDst++ = L'"'; /* cygwin: '"' instead of '\\', no escaped slashes. */
|
|---|
| 1051 | else
|
|---|
| 1052 | {
|
|---|
| 1053 | if (!(fFlags & (MKWCCWCMD_F_CYGWIN_SHELL | MKWCCWCMD_F_MKS_SHELL)))
|
|---|
| 1054 | cBackslashes = 1;
|
|---|
| 1055 | while (cBackslashes-- > 0)
|
|---|
| 1056 | *pwchSlowDst++ = L'\\';
|
|---|
| 1057 | }
|
|---|
| 1058 | *pwchSlowDst++ = wcSrc;
|
|---|
| 1059 | }
|
|---|
| 1060 |
|
|---|
| 1061 | if (paArgInfo[i].fEndSlashes)
|
|---|
| 1062 | while (cBackslashes-- > 0)
|
|---|
| 1063 | *pwchSlowDst++ = L'\\';
|
|---|
| 1064 |
|
|---|
| 1065 | pwszDst += cwcDst;
|
|---|
| 1066 | assert(pwszDst == (WCHAR *)pwchSlowDst);
|
|---|
| 1067 | }
|
|---|
| 1068 |
|
|---|
| 1069 | if (paArgInfo[i].fExtraSpace)
|
|---|
| 1070 | *pwszDst++ = L' ';
|
|---|
| 1071 | if (paArgInfo[i].fQuoteIt)
|
|---|
| 1072 | *pwszDst++ = L'"';
|
|---|
| 1073 | }
|
|---|
| 1074 | *pwszDst = L'\0';
|
|---|
| 1075 | *ppwszCommandLine = pwszCmdLine;
|
|---|
| 1076 | return 0;
|
|---|
| 1077 | }
|
|---|
| 1078 |
|
|---|
| 1079 | static int mkWinChildcareWorkerConvertCommandlineWithShell(const WCHAR *pwszShell, char **papszArgs, WCHAR **ppwszCommandLine)
|
|---|
| 1080 | {
|
|---|
| 1081 | fprintf(stderr, "%s: not found!\n", papszArgs[0]);
|
|---|
| 1082 | //__debugbreak();
|
|---|
| 1083 | return ERROR_FILE_NOT_FOUND;
|
|---|
| 1084 | }
|
|---|
| 1085 |
|
|---|
| 1086 | /**
|
|---|
| 1087 | * Searches the environment block for the PATH variable.
|
|---|
| 1088 | *
|
|---|
| 1089 | * @returns Pointer to the path in the block or "." in pwszPathFallback.
|
|---|
| 1090 | * @param pwszzEnv The UTF-16 environment block to search.
|
|---|
| 1091 | * @param pwszPathFallback Fallback.
|
|---|
| 1092 | */
|
|---|
| 1093 | static const WCHAR *mkWinChildcareWorkerFindPathValue(const WCHAR *pwszzEnv, WCHAR pwszPathFallback[4])
|
|---|
| 1094 | {
|
|---|
| 1095 | while (*pwszzEnv)
|
|---|
| 1096 | {
|
|---|
| 1097 | size_t cwcVar = wcslen(pwszzEnv);
|
|---|
| 1098 | if (!IS_PATH_ENV_VAR(cwcVar, pwszzEnv))
|
|---|
| 1099 | pwszzEnv += cwcVar + 1;
|
|---|
| 1100 | else if (cwcVar > 5)
|
|---|
| 1101 | return &pwszzEnv[5];
|
|---|
| 1102 | else
|
|---|
| 1103 | break;
|
|---|
| 1104 | }
|
|---|
| 1105 | pwszPathFallback[0] = L'.';
|
|---|
| 1106 | pwszPathFallback[1] = L'\0';
|
|---|
| 1107 | return pwszPathFallback;
|
|---|
| 1108 | }
|
|---|
| 1109 |
|
|---|
| 1110 | /**
|
|---|
| 1111 | * Checks if we need to had this executable file to the shell.
|
|---|
| 1112 | *
|
|---|
| 1113 | * @returns TRUE if it's shell fooder, FALSE if we think windows can handle it.
|
|---|
| 1114 | * @param hFile Handle to the file in question
|
|---|
| 1115 | */
|
|---|
| 1116 | static BOOL mkWinChildcareWorkerCheckIfNeedShell(HANDLE hFile)
|
|---|
| 1117 | {
|
|---|
| 1118 | /*
|
|---|
| 1119 | * Read the first 512 bytes and check for an executable image header.
|
|---|
| 1120 | */
|
|---|
| 1121 | union
|
|---|
| 1122 | {
|
|---|
| 1123 | DWORD dwSignature;
|
|---|
| 1124 | WORD wSignature;
|
|---|
| 1125 | BYTE ab[128];
|
|---|
| 1126 | } uBuf;
|
|---|
| 1127 | DWORD cbRead;
|
|---|
| 1128 | uBuf.dwSignature = 0;
|
|---|
| 1129 | if ( ReadFile(hFile, &uBuf, sizeof(uBuf), &cbRead, NULL /*pOverlapped*/)
|
|---|
| 1130 | && cbRead == sizeof(uBuf))
|
|---|
| 1131 | {
|
|---|
| 1132 | if (uBuf.wSignature == IMAGE_DOS_SIGNATURE)
|
|---|
| 1133 | return FALSE;
|
|---|
| 1134 | if (uBuf.dwSignature == IMAGE_NT_SIGNATURE)
|
|---|
| 1135 | return FALSE;
|
|---|
| 1136 | if ( uBuf.wSignature == IMAGE_OS2_SIGNATURE /* NE */
|
|---|
| 1137 | || uBuf.wSignature == 0x5d4c /* LX */
|
|---|
| 1138 | || uBuf.wSignature == IMAGE_OS2_SIGNATURE_LE /* LE */)
|
|---|
| 1139 | return FALSE;
|
|---|
| 1140 | }
|
|---|
| 1141 | return TRUE;
|
|---|
| 1142 | }
|
|---|
| 1143 |
|
|---|
| 1144 |
|
|---|
| 1145 | /**
|
|---|
| 1146 | * Tries to locate the image file, searching the path and maybe falling back on
|
|---|
| 1147 | * the shell in case it knows more (think cygwin with its own view of the file
|
|---|
| 1148 | * system).
|
|---|
| 1149 | *
|
|---|
| 1150 | * This will also check for shell script, falling back on the shell too to
|
|---|
| 1151 | * handle those.
|
|---|
| 1152 | *
|
|---|
| 1153 | * @returns 0 on success, windows error code on failure.
|
|---|
| 1154 | * @param pszArg0 The first argument.
|
|---|
| 1155 | * @param pwszSearchPath In case mkWinChildcareWorkerConvertEnvironment
|
|---|
| 1156 | * had a chance of locating the search path already.
|
|---|
| 1157 | * @param pwszzEnv The environment block, in case we need to look for
|
|---|
| 1158 | * the path.
|
|---|
| 1159 | * @param pszShell The shell.
|
|---|
| 1160 | * @param ppwszImagePath Where to return the pointer to the image path. This
|
|---|
| 1161 | * could be the shell.
|
|---|
| 1162 | * @param pfNeedShell Where to return shell vs direct execution indicator.
|
|---|
| 1163 | */
|
|---|
| 1164 | static int mkWinChildcareWorkerFindImage(char const *pszArg0, WCHAR *pwszSearchPath, WCHAR const *pwszzEnv,
|
|---|
| 1165 | const char *pszShell, WCHAR **ppwszImagePath, BOOL *pfNeedShell)
|
|---|
| 1166 | {
|
|---|
| 1167 | /** @todo Slap a cache on this code. We usually end up executing the same
|
|---|
| 1168 | * stuff over and over again (e.g. compilers, linkers, etc).
|
|---|
| 1169 | * Hitting the file system is slow on windows. */
|
|---|
| 1170 |
|
|---|
| 1171 | /*
|
|---|
| 1172 | * Convert pszArg0 to unicode so we can work directly on that.
|
|---|
| 1173 | */
|
|---|
| 1174 | WCHAR wszArg0[MKWINCHILD_MAX_PATH + 4]; /* +4 for painless '.exe' appending */
|
|---|
| 1175 | DWORD dwErr;
|
|---|
| 1176 | size_t cbArg0 = strlen(pszArg0) + 1;
|
|---|
| 1177 | int const cwcArg0 = MultiByteToWideChar(CP_ACP, 0 /*fFlags*/, pszArg0, cbArg0, wszArg0, MKWINCHILD_MAX_PATH);
|
|---|
| 1178 | if (cwcArg0 > 0)
|
|---|
| 1179 | {
|
|---|
| 1180 | HANDLE hFile = INVALID_HANDLE_VALUE;
|
|---|
| 1181 | WCHAR wszPathBuf[MKWINCHILD_MAX_PATH + 4]; /* +4 for painless '.exe' appending */
|
|---|
| 1182 | int cwc;
|
|---|
| 1183 |
|
|---|
| 1184 | /*
|
|---|
| 1185 | * If there isn't an .exe suffix, we may have to add one.
|
|---|
| 1186 | * Also we ASSUME that .exe suffixes means no hash bang detection needed.
|
|---|
| 1187 | */
|
|---|
| 1188 | int const fHasExeSuffix = cwcArg0 > CSTRLEN(".exe")
|
|---|
| 1189 | && wszArg0[cwcArg0 - 4] == '.'
|
|---|
| 1190 | && (wszArg0[cwcArg0 - 3] == L'e' || wszArg0[cwcArg0 - 3] == L'E')
|
|---|
| 1191 | && (wszArg0[cwcArg0 - 2] == L'x' || wszArg0[cwcArg0 - 2] == L'X')
|
|---|
| 1192 | && (wszArg0[cwcArg0 - 1] == L'e' || wszArg0[cwcArg0 - 1] == L'E');
|
|---|
| 1193 |
|
|---|
| 1194 | /*
|
|---|
| 1195 | * If there isn't any path specified, we need to search the PATH env.var.
|
|---|
| 1196 | */
|
|---|
| 1197 | int const fHasPath = wszArg0[1] == L':'
|
|---|
| 1198 | || wszArg0[0] == L'\\'
|
|---|
| 1199 | || wszArg0[0] == L'/'
|
|---|
| 1200 | || wmemchr(wszArg0, L'/', cwcArg0)
|
|---|
| 1201 | || wmemchr(wszArg0, L'\\', cwcArg0);
|
|---|
| 1202 |
|
|---|
| 1203 | /* Before we do anything, flip UNIX slashes to DOS ones. */
|
|---|
| 1204 | WCHAR *pwc = wszArg0;
|
|---|
| 1205 | while ((pwc = wcschr(pwc, L'/')) != NULL)
|
|---|
| 1206 | *pwc++ = L'\\';
|
|---|
| 1207 |
|
|---|
| 1208 | /* Don't need to set this all the time... */
|
|---|
| 1209 | *pfNeedShell = FALSE;
|
|---|
| 1210 |
|
|---|
| 1211 | /*
|
|---|
| 1212 | * If any kind of path is specified in arg0, we will not search the
|
|---|
| 1213 | * PATH env.var and can limit ourselves to maybe slapping a .exe on to it.
|
|---|
| 1214 | */
|
|---|
| 1215 | if (fHasPath)
|
|---|
| 1216 | {
|
|---|
| 1217 | /*
|
|---|
| 1218 | * If relative to a CWD, turn it into an absolute one.
|
|---|
| 1219 | */
|
|---|
| 1220 | unsigned cwcPath = cwcArg0;
|
|---|
| 1221 | WCHAR *pwszPath = wszArg0;
|
|---|
| 1222 | if ( *pwszPath != L'\\'
|
|---|
| 1223 | && (pwszPath[1] != ':' || pwszPath[2] != L'\\') )
|
|---|
| 1224 | {
|
|---|
| 1225 | DWORD cwcAbsPath = GetFullPathNameW(wszArg0, MKWINCHILD_MAX_PATH, wszPathBuf, NULL);
|
|---|
| 1226 | if (cwcAbsPath > 0)
|
|---|
| 1227 | {
|
|---|
| 1228 | cwcPath = cwcAbsPath + 1; /* include terminator, like MultiByteToWideChar does. */
|
|---|
| 1229 | pwszPath = wszPathBuf;
|
|---|
| 1230 | }
|
|---|
| 1231 | }
|
|---|
| 1232 |
|
|---|
| 1233 | /*
|
|---|
| 1234 | * Check with .exe suffix first.
|
|---|
| 1235 | * We don't open .exe files and look for hash bang stuff, we just
|
|---|
| 1236 | * assume they are executable images that CreateProcess can deal with.
|
|---|
| 1237 | */
|
|---|
| 1238 | if (!fHasExeSuffix)
|
|---|
| 1239 | {
|
|---|
| 1240 | pwszPath[cwcPath - 1] = L'.';
|
|---|
| 1241 | pwszPath[cwcPath ] = L'e';
|
|---|
| 1242 | pwszPath[cwcPath + 1] = L'x';
|
|---|
| 1243 | pwszPath[cwcPath + 2] = L'e';
|
|---|
| 1244 | pwszPath[cwcPath + 3] = L'\0';
|
|---|
| 1245 | }
|
|---|
| 1246 |
|
|---|
| 1247 | #ifdef KMK
|
|---|
| 1248 | if (utf16_regular_file_p(pwszPath))
|
|---|
| 1249 | #else
|
|---|
| 1250 | if (GetFileAttributesW(pwszPath) != INVALID_FILE_ATTRIBUTES)
|
|---|
| 1251 | #endif
|
|---|
| 1252 | return mkWinChildDuplicateUtf16String(pwszPath, cwcPath + 4, ppwszImagePath);
|
|---|
| 1253 |
|
|---|
| 1254 | /*
|
|---|
| 1255 | * If no suffix was specified, try without .exe too, but now we need
|
|---|
| 1256 | * to see if it's for the shell or CreateProcess.
|
|---|
| 1257 | */
|
|---|
| 1258 | if (!fHasExeSuffix)
|
|---|
| 1259 | {
|
|---|
| 1260 | pwszPath[cwcPath - 1] = L'\0';
|
|---|
| 1261 | #ifdef KMK
|
|---|
| 1262 | if (utf16_regular_file_p(pwszPath))
|
|---|
| 1263 | #endif
|
|---|
| 1264 | {
|
|---|
| 1265 | hFile = CreateFileW(pwszPath, GENERIC_READ, FILE_SHARE_READ | FILE_SHARE_DELETE | FILE_SHARE_WRITE,
|
|---|
| 1266 | NULL /*pSecAttr*/, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
|
|---|
| 1267 | if (hFile != INVALID_HANDLE_VALUE)
|
|---|
| 1268 | {
|
|---|
| 1269 | *pfNeedShell = mkWinChildcareWorkerCheckIfNeedShell(hFile);
|
|---|
| 1270 | CloseHandle(hFile);
|
|---|
| 1271 | if (!*pfNeedShell)
|
|---|
| 1272 | return mkWinChildDuplicateUtf16String(pwszPath, cwcPath, ppwszImagePath);
|
|---|
| 1273 | }
|
|---|
| 1274 | }
|
|---|
| 1275 | }
|
|---|
| 1276 | }
|
|---|
| 1277 | /*
|
|---|
| 1278 | * No path, need to search the PATH env.var. for the executable, maybe
|
|---|
| 1279 | * adding an .exe suffix while do so if that is missing.
|
|---|
| 1280 | */
|
|---|
| 1281 | else
|
|---|
| 1282 | {
|
|---|
| 1283 | BOOL fSearchedCwd = FALSE;
|
|---|
| 1284 | WCHAR wszPathFallback[4];
|
|---|
| 1285 | if (!pwszSearchPath)
|
|---|
| 1286 | pwszSearchPath = (WCHAR *)mkWinChildcareWorkerFindPathValue(pwszzEnv, wszPathFallback);
|
|---|
| 1287 |
|
|---|
| 1288 | for (;;)
|
|---|
| 1289 | {
|
|---|
| 1290 | size_t cwcCombined;
|
|---|
| 1291 |
|
|---|
| 1292 | /*
|
|---|
| 1293 | * Find the end of the current PATH component.
|
|---|
| 1294 | */
|
|---|
| 1295 | size_t cwcSkip;
|
|---|
| 1296 | WCHAR wcEnd;
|
|---|
| 1297 | size_t cwcComponent = 0;
|
|---|
| 1298 | WCHAR wc;
|
|---|
| 1299 | while ((wc = pwszSearchPath[cwcComponent]) != L'\0')
|
|---|
| 1300 | {
|
|---|
| 1301 | if (wc != ';' && wc != ':')
|
|---|
| 1302 | { /* likely */ }
|
|---|
| 1303 | else if (wc == ';')
|
|---|
| 1304 | break;
|
|---|
| 1305 | else if (cwcComponent != (pwszSearchPath[cwcComponent] != L'"' ? 1 : 2))
|
|---|
| 1306 | break;
|
|---|
| 1307 | cwcComponent++;
|
|---|
| 1308 | }
|
|---|
| 1309 | wcEnd = wc;
|
|---|
| 1310 |
|
|---|
| 1311 | /* Trim leading spaces and double quotes. */
|
|---|
| 1312 | while ( cwcComponent > 0
|
|---|
| 1313 | && ((wc = *pwszSearchPath) == L'"' || wc == L' ' || wc == L'\t'))
|
|---|
| 1314 | {
|
|---|
| 1315 | pwszSearchPath++;
|
|---|
| 1316 | cwcComponent--;
|
|---|
| 1317 | }
|
|---|
| 1318 | cwcSkip = cwcComponent;
|
|---|
| 1319 |
|
|---|
| 1320 | /* Trim trailing spaces & double quotes. */
|
|---|
| 1321 | while ( cwcComponent > 0
|
|---|
| 1322 | && ((wc = pwszSearchPath[cwcComponent - 1]) == L'"' || wc == L' ' || wc == L'\t'))
|
|---|
| 1323 | cwcComponent--;
|
|---|
| 1324 |
|
|---|
| 1325 | /*
|
|---|
| 1326 | * Skip empty components. Join the component and the filename, making sure to
|
|---|
| 1327 | * resolve any CWD relative stuff first.
|
|---|
| 1328 | */
|
|---|
| 1329 | cwcCombined = cwcComponent + 1 + cwcArg0;
|
|---|
| 1330 | if (cwcComponent > 0 && cwcCombined <= MKWINCHILD_MAX_PATH)
|
|---|
| 1331 | {
|
|---|
| 1332 | #ifndef KMK
|
|---|
| 1333 | DWORD dwAttribs;
|
|---|
| 1334 | #endif
|
|---|
| 1335 |
|
|---|
| 1336 | /* Copy the component into wszPathBuf, maybe abspath'ing it. */
|
|---|
| 1337 | DWORD cwcAbsPath = 0;
|
|---|
| 1338 | if ( *pwszSearchPath != L'\\'
|
|---|
| 1339 | && (pwszSearchPath[1] != ':' || pwszSearchPath[2] != L'\\') )
|
|---|
| 1340 | {
|
|---|
| 1341 | /* To save an extra buffer + copying, we'll temporarily modify the PATH
|
|---|
| 1342 | value in our converted UTF-16 environment block. */
|
|---|
| 1343 | WCHAR const wcSaved = pwszSearchPath[cwcComponent];
|
|---|
| 1344 | pwszSearchPath[cwcComponent] = L'\0';
|
|---|
| 1345 | cwcAbsPath = GetFullPathNameW(pwszSearchPath, MKWINCHILD_MAX_PATH, wszPathBuf, NULL);
|
|---|
| 1346 | pwszSearchPath[cwcComponent] = wcSaved;
|
|---|
| 1347 | if (cwcAbsPath > 0 && cwcAbsPath + 1 + cwcArg0 <= MKWINCHILD_MAX_PATH)
|
|---|
| 1348 | cwcCombined = cwcAbsPath + 1 + cwcArg0;
|
|---|
| 1349 | else
|
|---|
| 1350 | cwcAbsPath = 0;
|
|---|
| 1351 | }
|
|---|
| 1352 | if (cwcAbsPath == 0)
|
|---|
| 1353 | {
|
|---|
| 1354 | memcpy(wszPathBuf, pwszSearchPath, cwcComponent * sizeof(WCHAR));
|
|---|
| 1355 | cwcAbsPath = cwcComponent;
|
|---|
| 1356 | }
|
|---|
| 1357 |
|
|---|
| 1358 | /* Append the filename. */
|
|---|
| 1359 | if ((wc = wszPathBuf[cwcAbsPath - 1]) == L'\\' || wc == L'/' || wc == L':')
|
|---|
| 1360 | {
|
|---|
| 1361 | memcpy(&wszPathBuf[cwcAbsPath], wszArg0, cwcArg0 * sizeof(WCHAR));
|
|---|
| 1362 | cwcCombined--;
|
|---|
| 1363 | }
|
|---|
| 1364 | else
|
|---|
| 1365 | {
|
|---|
| 1366 | wszPathBuf[cwcAbsPath] = L'\\';
|
|---|
| 1367 | memcpy(&wszPathBuf[cwcAbsPath + 1], wszArg0, cwcArg0 * sizeof(WCHAR));
|
|---|
| 1368 | }
|
|---|
| 1369 | assert(wszPathBuf[cwcCombined - 1] == L'\0');
|
|---|
| 1370 |
|
|---|
| 1371 | /* DOS slash conversion */
|
|---|
| 1372 | pwc = wszPathBuf;
|
|---|
| 1373 | while ((pwc = wcschr(pwc, L'/')) != NULL)
|
|---|
| 1374 | *pwc++ = L'\\';
|
|---|
| 1375 |
|
|---|
| 1376 | /*
|
|---|
| 1377 | * Search with exe suffix first.
|
|---|
| 1378 | */
|
|---|
| 1379 | if (!fHasExeSuffix)
|
|---|
| 1380 | {
|
|---|
| 1381 | wszPathBuf[cwcCombined - 1] = L'.';
|
|---|
| 1382 | wszPathBuf[cwcCombined ] = L'e';
|
|---|
| 1383 | wszPathBuf[cwcCombined + 1] = L'x';
|
|---|
| 1384 | wszPathBuf[cwcCombined + 2] = L'e';
|
|---|
| 1385 | wszPathBuf[cwcCombined + 3] = L'\0';
|
|---|
| 1386 | }
|
|---|
| 1387 | #ifdef KMK
|
|---|
| 1388 | if (utf16_regular_file_p(wszPathBuf))
|
|---|
| 1389 | #else
|
|---|
| 1390 | dwAttribs = GetFileAttributesW(wszPathBuf);
|
|---|
| 1391 | if ( dwAttribs != INVALID_FILE_ATTRIBUTES
|
|---|
| 1392 | && !(dwAttribs & FILE_ATTRIBUTE_DIRECTORY))
|
|---|
| 1393 | #endif
|
|---|
| 1394 | return mkWinChildDuplicateUtf16String(wszPathBuf, cwcCombined + (fHasExeSuffix ? 0 : 4), ppwszImagePath);
|
|---|
| 1395 | if (!fHasExeSuffix)
|
|---|
| 1396 | {
|
|---|
| 1397 | wszPathBuf[cwcCombined - 1] = L'\0';
|
|---|
| 1398 | #ifdef KMK
|
|---|
| 1399 | if (utf16_regular_file_p(wszPathBuf))
|
|---|
| 1400 | #endif
|
|---|
| 1401 | {
|
|---|
| 1402 | /*
|
|---|
| 1403 | * Check if the file exists w/o the added '.exe' suffix. If it does,
|
|---|
| 1404 | * we need to check if we can pass it to CreateProcess or need the shell.
|
|---|
| 1405 | */
|
|---|
| 1406 | hFile = CreateFileW(wszPathBuf, GENERIC_READ, FILE_SHARE_READ | FILE_SHARE_DELETE | FILE_SHARE_WRITE,
|
|---|
| 1407 | NULL /*pSecAttr*/, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
|
|---|
| 1408 | if (hFile != INVALID_HANDLE_VALUE)
|
|---|
| 1409 | {
|
|---|
| 1410 | *pfNeedShell = mkWinChildcareWorkerCheckIfNeedShell(hFile);
|
|---|
| 1411 | CloseHandle(hFile);
|
|---|
| 1412 | if (!*pfNeedShell)
|
|---|
| 1413 | return mkWinChildDuplicateUtf16String(wszPathBuf, cwcCombined, ppwszImagePath);
|
|---|
| 1414 | break;
|
|---|
| 1415 | }
|
|---|
| 1416 | }
|
|---|
| 1417 | }
|
|---|
| 1418 | }
|
|---|
| 1419 |
|
|---|
| 1420 | /*
|
|---|
| 1421 | * Advance to the next component.
|
|---|
| 1422 | */
|
|---|
| 1423 | if (wcEnd != '\0')
|
|---|
| 1424 | pwszSearchPath += cwcSkip + 1;
|
|---|
| 1425 | else if (fSearchedCwd)
|
|---|
| 1426 | break;
|
|---|
| 1427 | else
|
|---|
| 1428 | {
|
|---|
| 1429 | fSearchedCwd = TRUE;
|
|---|
| 1430 | wszPathFallback[0] = L'.';
|
|---|
| 1431 | wszPathFallback[1] = L'\0';
|
|---|
| 1432 | pwszSearchPath = wszPathFallback;
|
|---|
| 1433 | }
|
|---|
| 1434 | }
|
|---|
| 1435 | }
|
|---|
| 1436 |
|
|---|
| 1437 | /*
|
|---|
| 1438 | * We need the shell. It will take care of finding/reporting missing
|
|---|
| 1439 | * image files and such.
|
|---|
| 1440 | */
|
|---|
| 1441 | *pfNeedShell = TRUE;
|
|---|
| 1442 | if (pszShell)
|
|---|
| 1443 | {
|
|---|
| 1444 | cwc = MultiByteToWideChar(CP_ACP, 0 /*fFlags*/, pszShell, strlen(pszShell) + 1, wszPathBuf, MKWINCHILD_MAX_PATH);
|
|---|
| 1445 | if (cwc > 0)
|
|---|
| 1446 | return mkWinChildDuplicateUtf16String(wszPathBuf, cwc, ppwszImagePath);
|
|---|
| 1447 | dwErr = GetLastError();
|
|---|
| 1448 | fprintf(stderr, _("MultiByteToWideChar failed to convert shell (%s): %u\n"), pszShell, dwErr);
|
|---|
| 1449 | }
|
|---|
| 1450 | else
|
|---|
| 1451 | {
|
|---|
| 1452 | fprintf(stderr, "%s: not found!\n", pszArg0);
|
|---|
| 1453 | //__debugbreak();
|
|---|
| 1454 | dwErr = ERROR_FILE_NOT_FOUND;
|
|---|
| 1455 | }
|
|---|
| 1456 | }
|
|---|
| 1457 | else
|
|---|
| 1458 | {
|
|---|
| 1459 | dwErr = GetLastError();
|
|---|
| 1460 | fprintf(stderr, _("MultiByteToWideChar failed to convert argv[0] (%s): %u\n"), pszArg0, dwErr);
|
|---|
| 1461 | }
|
|---|
| 1462 | return dwErr == ERROR_INSUFFICIENT_BUFFER ? ERROR_FILENAME_EXCED_RANGE : dwErr;
|
|---|
| 1463 | }
|
|---|
| 1464 |
|
|---|
| 1465 | /**
|
|---|
| 1466 | * Creates the environment block.
|
|---|
| 1467 | *
|
|---|
| 1468 | * @returns 0 on success, windows error code on failure.
|
|---|
| 1469 | * @param papszEnv The environment vector to convert.
|
|---|
| 1470 | * @param cbEnvStrings The size of the environment strings, iff they are
|
|---|
| 1471 | * sequential in a block. Otherwise, zero.
|
|---|
| 1472 | * @param ppwszEnv Where to return the pointer to the environment
|
|---|
| 1473 | * block.
|
|---|
| 1474 | * @param ppwszSearchPath Where to return the pointer to the path value
|
|---|
| 1475 | * within the environment block. This will not be set
|
|---|
| 1476 | * if cbEnvStrings is non-zero, more efficient to let
|
|---|
| 1477 | * mkWinChildcareWorkerFindImage() search when needed.
|
|---|
| 1478 | */
|
|---|
| 1479 | static int mkWinChildcareWorkerConvertEnvironment(char **papszEnv, size_t cbEnvStrings,
|
|---|
| 1480 | WCHAR **ppwszEnv, WCHAR const **ppwszSearchPath)
|
|---|
| 1481 | {
|
|---|
| 1482 | DWORD dwErr;
|
|---|
| 1483 | int cwcRc;
|
|---|
| 1484 | int cwcDst;
|
|---|
| 1485 | WCHAR *pwszzDst;
|
|---|
| 1486 |
|
|---|
| 1487 | *ppwszSearchPath = NULL;
|
|---|
| 1488 |
|
|---|
| 1489 | /*
|
|---|
| 1490 | * We've got a little optimization here with help from mkWinChildCopyStringArray.
|
|---|
| 1491 | */
|
|---|
| 1492 | if (cbEnvStrings)
|
|---|
| 1493 | {
|
|---|
| 1494 | cwcDst = cbEnvStrings + 32;
|
|---|
| 1495 | pwszzDst = (WCHAR *)xmalloc(cwcDst * sizeof(WCHAR));
|
|---|
| 1496 | cwcRc = MultiByteToWideChar(CP_ACP, 0 /*fFlags*/, papszEnv[0], cbEnvStrings, pwszzDst, cwcDst);
|
|---|
| 1497 | if (cwcRc != 0)
|
|---|
| 1498 | {
|
|---|
| 1499 | *ppwszEnv = pwszzDst;
|
|---|
| 1500 | return 0;
|
|---|
| 1501 | }
|
|---|
| 1502 |
|
|---|
| 1503 | /* Resize the allocation and try again. */
|
|---|
| 1504 | dwErr = GetLastError();
|
|---|
| 1505 | if (dwErr == ERROR_INSUFFICIENT_BUFFER)
|
|---|
| 1506 | {
|
|---|
| 1507 | cwcRc = MultiByteToWideChar(CP_ACP, 0 /*fFlags*/, papszEnv[0], cbEnvStrings, NULL, 0);
|
|---|
| 1508 | if (cwcRc > 0)
|
|---|
| 1509 | cwcDst = cwcRc + 32;
|
|---|
| 1510 | else
|
|---|
| 1511 | cwcDst *= 2;
|
|---|
| 1512 | pwszzDst = (WCHAR *)xrealloc(pwszzDst, cwcDst);
|
|---|
| 1513 | cwcRc = MultiByteToWideChar(CP_ACP, 0 /*fFlags*/, papszEnv[0], cbEnvStrings, pwszzDst, cwcDst);
|
|---|
| 1514 | if (cwcRc != 0)
|
|---|
| 1515 | {
|
|---|
| 1516 | *ppwszEnv = pwszzDst;
|
|---|
| 1517 | return 0;
|
|---|
| 1518 | }
|
|---|
| 1519 | dwErr = GetLastError();
|
|---|
| 1520 | }
|
|---|
| 1521 | fprintf(stderr, _("MultiByteToWideChar failed to convert environment block: %u\n"), dwErr);
|
|---|
| 1522 | }
|
|---|
| 1523 | /*
|
|---|
| 1524 | * Need to convert it string by string.
|
|---|
| 1525 | */
|
|---|
| 1526 | else
|
|---|
| 1527 | {
|
|---|
| 1528 | size_t offPathValue = ~(size_t)0;
|
|---|
| 1529 | size_t offDst;
|
|---|
| 1530 |
|
|---|
| 1531 | /*
|
|---|
| 1532 | * Estimate the size first.
|
|---|
| 1533 | */
|
|---|
| 1534 | size_t cEnvVars;
|
|---|
| 1535 | size_t cwcDst = 32;
|
|---|
| 1536 | size_t iVar = 0;
|
|---|
| 1537 | const char *pszSrc;
|
|---|
| 1538 | while ((pszSrc = papszEnv[iVar]) != NULL)
|
|---|
| 1539 | {
|
|---|
| 1540 | cwcDst += strlen(pszSrc) + 1;
|
|---|
| 1541 | iVar++;
|
|---|
| 1542 | }
|
|---|
| 1543 | cEnvVars = iVar;
|
|---|
| 1544 |
|
|---|
| 1545 | /* Allocate estimated WCHARs and convert the variables one by one, reallocating
|
|---|
| 1546 | the block as needed. */
|
|---|
| 1547 | pwszzDst = (WCHAR *)xmalloc(cwcDst * sizeof(WCHAR));
|
|---|
| 1548 | cwcDst--; /* save one wchar for the terminating empty string. */
|
|---|
| 1549 | offDst = 0;
|
|---|
| 1550 | for (iVar = 0; iVar < cEnvVars; iVar++)
|
|---|
| 1551 | {
|
|---|
| 1552 | size_t cwcLeft = cwcDst - offDst;
|
|---|
| 1553 | size_t const cbSrc = strlen(pszSrc = papszEnv[iVar]) + 1;
|
|---|
| 1554 | assert(cwcDst >= offDst);
|
|---|
| 1555 |
|
|---|
| 1556 |
|
|---|
| 1557 | cwcRc = MultiByteToWideChar(CP_ACP, 0 /*fFlags*/, pszSrc, cbSrc, &pwszzDst[offDst], cwcLeft);
|
|---|
| 1558 | if (cwcRc > 0)
|
|---|
| 1559 | { /* likely */ }
|
|---|
| 1560 | else
|
|---|
| 1561 | {
|
|---|
| 1562 | dwErr = GetLastError();
|
|---|
| 1563 | if (dwErr == ERROR_INSUFFICIENT_BUFFER)
|
|---|
| 1564 | {
|
|---|
| 1565 | /* Need more space. So, calc exacly how much and resize the block accordingly. */
|
|---|
| 1566 | size_t cbSrc2 = cbSrc;
|
|---|
| 1567 | size_t iVar2 = iVar;
|
|---|
| 1568 | cwcLeft = 1;
|
|---|
| 1569 | for (;;)
|
|---|
| 1570 | {
|
|---|
| 1571 | size_t cwcRc2 = MultiByteToWideChar(CP_ACP, 0 /*fFlags*/, pszSrc, cbSrc, NULL, 0);
|
|---|
| 1572 | if (cwcRc2 > 0)
|
|---|
| 1573 | cwcLeft += cwcRc2;
|
|---|
| 1574 | else
|
|---|
| 1575 | cwcLeft += cbSrc * 4;
|
|---|
| 1576 |
|
|---|
| 1577 | /* advance */
|
|---|
| 1578 | iVar2++;
|
|---|
| 1579 | if (iVar2 >= cEnvVars)
|
|---|
| 1580 | break;
|
|---|
| 1581 | pszSrc = papszEnv[iVar2];
|
|---|
| 1582 | cbSrc2 = strlen(pszSrc) + 1;
|
|---|
| 1583 | }
|
|---|
| 1584 | pszSrc = papszEnv[iVar];
|
|---|
| 1585 |
|
|---|
| 1586 | /* Grow the allocation and repeat the conversion. */
|
|---|
| 1587 | if (offDst + cwcLeft > cwcDst + 1)
|
|---|
| 1588 | {
|
|---|
| 1589 | cwcDst = offDst + cwcLeft;
|
|---|
| 1590 | pwszzDst = (WCHAR *)xrealloc(pwszzDst, cwcDst * sizeof(WCHAR));
|
|---|
| 1591 | cwcDst--; /* save one wchar for the terminating empty string. */
|
|---|
| 1592 | cwcRc = MultiByteToWideChar(CP_ACP, 0 /*fFlags*/, pszSrc, cbSrc, &pwszzDst[offDst], cwcLeft - 1);
|
|---|
| 1593 | if (cwcRc <= 0)
|
|---|
| 1594 | dwErr = GetLastError();
|
|---|
| 1595 | }
|
|---|
| 1596 | }
|
|---|
| 1597 | if (cwcRc <= 0)
|
|---|
| 1598 | {
|
|---|
| 1599 | fprintf(stderr, _("MultiByteToWideChar failed to convert environment string #%u (%s): %u\n"),
|
|---|
| 1600 | iVar, pszSrc, dwErr);
|
|---|
| 1601 | free(pwszzDst);
|
|---|
| 1602 | return dwErr;
|
|---|
| 1603 | }
|
|---|
| 1604 | }
|
|---|
| 1605 |
|
|---|
| 1606 | /* Look for the PATH. */
|
|---|
| 1607 | if ( offPathValue == ~(size_t)0
|
|---|
| 1608 | && IS_PATH_ENV_VAR(cwcRc, &pwszzDst[offDst]) )
|
|---|
| 1609 | offPathValue = offDst + 4 + 1;
|
|---|
| 1610 |
|
|---|
| 1611 | /* Advance. */
|
|---|
| 1612 | offDst += cwcRc;
|
|---|
| 1613 | }
|
|---|
| 1614 | pwszzDst[offDst++] = '\0';
|
|---|
| 1615 |
|
|---|
| 1616 | if (offPathValue != ~(size_t)0)
|
|---|
| 1617 | *ppwszSearchPath = &pwszzDst[offPathValue];
|
|---|
| 1618 | *ppwszEnv = pwszzDst;
|
|---|
| 1619 | return 0;
|
|---|
| 1620 | }
|
|---|
| 1621 | free(pwszzDst);
|
|---|
| 1622 | return dwErr;
|
|---|
| 1623 | }
|
|---|
| 1624 |
|
|---|
| 1625 | /**
|
|---|
| 1626 | * Childcare worker: handle regular process.
|
|---|
| 1627 | *
|
|---|
| 1628 | * @param pWorker The worker.
|
|---|
| 1629 | * @param pChild The kSubmit child.
|
|---|
| 1630 | */
|
|---|
| 1631 | static void mkWinChildcareWorkerThreadHandleProcess(PWINCHILDCAREWORKER pWorker, PWINCHILD pChild)
|
|---|
| 1632 | {
|
|---|
| 1633 | WCHAR *pwszSearchPath = NULL;
|
|---|
| 1634 | WCHAR *pwszzEnvironment = NULL;
|
|---|
| 1635 | WCHAR *pwszCommandLine = NULL;
|
|---|
| 1636 | WCHAR *pwszImageName = NULL;
|
|---|
| 1637 | BOOL fNeedShell = FALSE;
|
|---|
| 1638 | int rc;
|
|---|
| 1639 |
|
|---|
| 1640 | /*
|
|---|
| 1641 | * First we convert the environment so we get the PATH we need to
|
|---|
| 1642 | * search for the executable.
|
|---|
| 1643 | */
|
|---|
| 1644 | rc = mkWinChildcareWorkerConvertEnvironment(pChild->u.Process.papszEnv ? pChild->u.Process.papszEnv : environ,
|
|---|
| 1645 | pChild->u.Process.cbEnvStrings,
|
|---|
| 1646 | &pwszzEnvironment, &pwszSearchPath);
|
|---|
| 1647 | /*
|
|---|
| 1648 | * Find the executable and maybe checking if it's a shell script, then
|
|---|
| 1649 | * convert it to a command line.
|
|---|
| 1650 | */
|
|---|
| 1651 | if (rc == 0)
|
|---|
| 1652 | rc = mkWinChildcareWorkerFindImage(pChild->u.Process.papszArgs[0], pwszSearchPath, pwszzEnvironment,
|
|---|
| 1653 | pChild->u.Process.pszShell, &pwszImageName, &fNeedShell);
|
|---|
| 1654 | if (rc == 0)
|
|---|
| 1655 | {
|
|---|
| 1656 | if (!fNeedShell)
|
|---|
| 1657 | rc = mkWinChildcareWorkerConvertCommandline(pChild->u.Process.papszArgs, 0 /*fFlags*/, &pwszCommandLine);
|
|---|
| 1658 | else
|
|---|
| 1659 | rc = mkWinChildcareWorkerConvertCommandlineWithShell(pwszImageName, pChild->u.Process.papszArgs, &pwszCommandLine);
|
|---|
| 1660 |
|
|---|
| 1661 | /*
|
|---|
| 1662 | * Create the child process.
|
|---|
| 1663 | */
|
|---|
| 1664 | if (rc == 0)
|
|---|
| 1665 | {
|
|---|
| 1666 | rc = mkWinChildcareWorkerCreateProcess(pWorker, pChild, pwszImageName, pwszCommandLine, pwszzEnvironment);
|
|---|
| 1667 | if (rc == 0)
|
|---|
| 1668 | {
|
|---|
| 1669 | /*
|
|---|
| 1670 | * Wait for the child to complete.
|
|---|
| 1671 | */
|
|---|
| 1672 | mkWinChildcareWorkerWaitForProcess(pWorker, pChild, pChild->u.Process.hProcess, pwszImageName);
|
|---|
| 1673 | }
|
|---|
| 1674 | else
|
|---|
| 1675 | pChild->iExitCode = rc;
|
|---|
| 1676 | }
|
|---|
| 1677 | else
|
|---|
| 1678 | pChild->iExitCode = rc;
|
|---|
| 1679 | }
|
|---|
| 1680 | else
|
|---|
| 1681 | pChild->iExitCode = rc;
|
|---|
| 1682 | free(pwszCommandLine);
|
|---|
| 1683 | free(pwszImageName);
|
|---|
| 1684 | free(pwszzEnvironment);
|
|---|
| 1685 |
|
|---|
| 1686 | /* In case we failed, we must make sure the child end of pipes
|
|---|
| 1687 | used by $(shell no_such_command.exe) are closed, otherwise
|
|---|
| 1688 | the main thread will be stuck reading the parent end. */
|
|---|
| 1689 | mkWinChildcareWorkerCloseStandardHandles(pChild);
|
|---|
| 1690 | }
|
|---|
| 1691 |
|
|---|
| 1692 | #ifdef KMK
|
|---|
| 1693 |
|
|---|
| 1694 | /**
|
|---|
| 1695 | * Childcare worker: handle builtin command.
|
|---|
| 1696 | *
|
|---|
| 1697 | * @param pWorker The worker.
|
|---|
| 1698 | * @param pChild The kSubmit child.
|
|---|
| 1699 | */
|
|---|
| 1700 | static void mkWinChildcareWorkerThreadHandleBuiltIn(PWINCHILDCAREWORKER pWorker, PWINCHILD pChild)
|
|---|
| 1701 | {
|
|---|
| 1702 | PCKMKBUILTINENTRY pBuiltIn = pChild->u.BuiltIn.pBuiltIn;
|
|---|
| 1703 | if (pBuiltIn->uFnSignature == FN_SIG_MAIN)
|
|---|
| 1704 | pChild->iExitCode = pBuiltIn->u.pfnMain(pChild->u.BuiltIn.cArgs, pChild->u.BuiltIn.papszArgs, pChild->u.BuiltIn.papszEnv);
|
|---|
| 1705 | else if (pBuiltIn->uFnSignature == FN_SIG_MAIN_SPAWNS)
|
|---|
| 1706 | pChild->iExitCode = pBuiltIn->u.pfnMainSpawns(pChild->u.BuiltIn.cArgs, pChild->u.BuiltIn.papszArgs,
|
|---|
| 1707 | pChild->u.BuiltIn.papszEnv, pChild->pMkChild, NULL);
|
|---|
| 1708 | else
|
|---|
| 1709 | {
|
|---|
| 1710 | assert(0);
|
|---|
| 1711 | pChild->iExitCode = 98;
|
|---|
| 1712 | }
|
|---|
| 1713 | }
|
|---|
| 1714 |
|
|---|
| 1715 | /**
|
|---|
| 1716 | * Childcare worker: handle append write-out.
|
|---|
| 1717 | *
|
|---|
| 1718 | * @param pWorker The worker.
|
|---|
| 1719 | * @param pChild The kSubmit child.
|
|---|
| 1720 | */
|
|---|
| 1721 | static void mkWinChildcareWorkerThreadHandleAppend(PWINCHILDCAREWORKER pWorker, PWINCHILD pChild)
|
|---|
| 1722 | {
|
|---|
| 1723 | int fd = open(pChild->u.Append.pszFilename,
|
|---|
| 1724 | pChild->u.Append.fTruncate
|
|---|
| 1725 | ? O_WRONLY | O_TRUNC | O_CREAT | _O_NOINHERIT | _O_BINARY
|
|---|
| 1726 | : O_WRONLY | O_APPEND | O_CREAT | _O_NOINHERIT | _O_BINARY,
|
|---|
| 1727 | 0666);
|
|---|
| 1728 | if (fd >= 0)
|
|---|
| 1729 | {
|
|---|
| 1730 | ssize_t cbWritten = write(fd, pChild->u.Append.pszAppend, pChild->u.Append.cbAppend);
|
|---|
| 1731 | if (cbWritten == (ssize_t)pChild->u.Append.cbAppend)
|
|---|
| 1732 | {
|
|---|
| 1733 | if (close(fd) >= 0)
|
|---|
| 1734 | {
|
|---|
| 1735 | pChild->iExitCode = 0;
|
|---|
| 1736 | return;
|
|---|
| 1737 | }
|
|---|
| 1738 | fprintf(stderr, "kmk_builtin_append: close failed on '%s': %u (%s)\n",
|
|---|
| 1739 | pChild->u.Append.pszFilename, errno, strerror(errno));
|
|---|
| 1740 | }
|
|---|
| 1741 | else
|
|---|
| 1742 | fprintf(stderr, "kmk_builtin_append: error writing %lu bytes to on '%s': %u (%s)\n",
|
|---|
| 1743 | pChild->u.Append.cbAppend, pChild->u.Append.pszFilename, errno, strerror(errno));
|
|---|
| 1744 | close(fd);
|
|---|
| 1745 | }
|
|---|
| 1746 | else
|
|---|
| 1747 | fprintf(stderr, "kmk_builtin_append: error opening '%s': %u (%s)\n",
|
|---|
| 1748 | pChild->u.Append.pszFilename, errno, strerror(errno));
|
|---|
| 1749 | pChild->iExitCode = 1;
|
|---|
| 1750 | }
|
|---|
| 1751 |
|
|---|
| 1752 | /**
|
|---|
| 1753 | * Childcare worker: handle kSubmit job.
|
|---|
| 1754 | *
|
|---|
| 1755 | * @param pWorker The worker.
|
|---|
| 1756 | * @param pChild The kSubmit child.
|
|---|
| 1757 | */
|
|---|
| 1758 | static void mkWinChildcareWorkerThreadHandleSubmit(PWINCHILDCAREWORKER pWorker, PWINCHILD pChild)
|
|---|
| 1759 | {
|
|---|
| 1760 | void *pvSubmitWorker = pChild->u.Submit.pvSubmitWorker;
|
|---|
| 1761 | for (;;)
|
|---|
| 1762 | {
|
|---|
| 1763 | int iExitCode = -42;
|
|---|
| 1764 | int iSignal = -1;
|
|---|
| 1765 | DWORD dwStatus = WaitForSingleObject(pChild->u.Submit.hEvent, INFINITE);
|
|---|
| 1766 | assert(dwStatus != WAIT_FAILED);
|
|---|
| 1767 |
|
|---|
| 1768 | if (kSubmitSubProcGetResult((intptr_t)pvSubmitWorker, &iExitCode, &iSignal) == 0)
|
|---|
| 1769 | {
|
|---|
| 1770 | pChild->iExitCode = iExitCode;
|
|---|
| 1771 | pChild->iSignal = iSignal;
|
|---|
| 1772 | /* Cleanup must be done on the main thread. */
|
|---|
| 1773 | return;
|
|---|
| 1774 | }
|
|---|
| 1775 |
|
|---|
| 1776 | if (pChild->iSignal != 0)
|
|---|
| 1777 | kSubmitSubProcKill((intptr_t)pvSubmitWorker, pChild->iSignal);
|
|---|
| 1778 | }
|
|---|
| 1779 | }
|
|---|
| 1780 |
|
|---|
| 1781 | /**
|
|---|
| 1782 | * Childcare worker: handle kmk_redirect process.
|
|---|
| 1783 | *
|
|---|
| 1784 | * @param pWorker The worker.
|
|---|
| 1785 | * @param pChild The redirect child.
|
|---|
| 1786 | */
|
|---|
| 1787 | static void mkWinChildcareWorkerThreadHandleRedirect(PWINCHILDCAREWORKER pWorker, PWINCHILD pChild)
|
|---|
| 1788 | {
|
|---|
| 1789 | mkWinChildcareWorkerWaitForProcess(pWorker, pChild, pChild->u.Redirect.hProcess, L"kmk_redirect");
|
|---|
| 1790 | }
|
|---|
| 1791 |
|
|---|
| 1792 | #endif /* KMK */
|
|---|
| 1793 |
|
|---|
| 1794 | /**
|
|---|
| 1795 | * Childcare worker thread.
|
|---|
| 1796 | *
|
|---|
| 1797 | * @returns 0
|
|---|
| 1798 | * @param pvUser The worker instance.
|
|---|
| 1799 | */
|
|---|
| 1800 | static unsigned int __stdcall mkWinChildcareWorkerThread(void *pvUser)
|
|---|
| 1801 | {
|
|---|
| 1802 | PWINCHILDCAREWORKER pWorker = (PWINCHILDCAREWORKER)pvUser;
|
|---|
| 1803 | assert(pWorker->uMagic == WINCHILDCAREWORKER_MAGIC);
|
|---|
| 1804 |
|
|---|
| 1805 | /*
|
|---|
| 1806 | * Adjust process group if necessary.
|
|---|
| 1807 | */
|
|---|
| 1808 | if (g_cProcessorGroups > 1)
|
|---|
| 1809 | {
|
|---|
| 1810 | GROUP_AFFINITY Affinity = { ~(ULONG_PTR)0, pWorker->iProcessorGroup, { 0, 0, 0 } };
|
|---|
| 1811 | BOOL fRet = g_pfnSetThreadGroupAffinity(GetCurrentThread(), &Affinity, NULL);
|
|---|
| 1812 | assert(fRet); (void)fRet;
|
|---|
| 1813 | }
|
|---|
| 1814 |
|
|---|
| 1815 | /*
|
|---|
| 1816 | * Work loop.
|
|---|
| 1817 | */
|
|---|
| 1818 | while (!g_fShutdown)
|
|---|
| 1819 | {
|
|---|
| 1820 | /*
|
|---|
| 1821 | * Try go idle.
|
|---|
| 1822 | */
|
|---|
| 1823 | PWINCHILD pChild = pWorker->pTailTodoChildren;
|
|---|
| 1824 | if (!pChild)
|
|---|
| 1825 | {
|
|---|
| 1826 | _InterlockedExchange(&pWorker->fIdle, TRUE);
|
|---|
| 1827 | pChild = pWorker->pTailTodoChildren;
|
|---|
| 1828 | if (!pChild)
|
|---|
| 1829 | {
|
|---|
| 1830 | DWORD dwStatus;
|
|---|
| 1831 |
|
|---|
| 1832 | _InterlockedIncrement((long *)&g_cIdleChildcareWorkers);
|
|---|
| 1833 | dwStatus = WaitForSingleObject(pWorker->hEvtIdle, INFINITE);
|
|---|
| 1834 | _InterlockedExchange(&pWorker->fIdle, FALSE);
|
|---|
| 1835 | _InterlockedDecrement((long *)&g_cIdleChildcareWorkers);
|
|---|
| 1836 |
|
|---|
| 1837 | assert(dwStatus != WAIT_FAILED);
|
|---|
| 1838 | if (dwStatus == WAIT_FAILED)
|
|---|
| 1839 | Sleep(20);
|
|---|
| 1840 |
|
|---|
| 1841 | pChild = pWorker->pTailTodoChildren;
|
|---|
| 1842 | }
|
|---|
| 1843 | else
|
|---|
| 1844 | _InterlockedExchange(&pWorker->fIdle, FALSE);
|
|---|
| 1845 | }
|
|---|
| 1846 | if (pChild)
|
|---|
| 1847 | {
|
|---|
| 1848 | /*
|
|---|
| 1849 | * We got work to do. First job is to deque the job.
|
|---|
| 1850 | */
|
|---|
| 1851 | pChild = mkWinChildDequeFromLifo(&pWorker->pTailTodoChildren, pChild);
|
|---|
| 1852 | assert(pChild);
|
|---|
| 1853 | if (pChild)
|
|---|
| 1854 | {
|
|---|
| 1855 | PWINCHILD pTailExpect;
|
|---|
| 1856 |
|
|---|
| 1857 | switch (pChild->enmType)
|
|---|
| 1858 | {
|
|---|
| 1859 | case WINCHILDTYPE_PROCESS:
|
|---|
| 1860 | mkWinChildcareWorkerThreadHandleProcess(pWorker, pChild);
|
|---|
| 1861 | break;
|
|---|
| 1862 | #ifdef KMK
|
|---|
| 1863 | case WINCHILDTYPE_BUILT_IN:
|
|---|
| 1864 | mkWinChildcareWorkerThreadHandleBuiltIn(pWorker, pChild);
|
|---|
| 1865 | break;
|
|---|
| 1866 | case WINCHILDTYPE_APPEND:
|
|---|
| 1867 | mkWinChildcareWorkerThreadHandleAppend(pWorker, pChild);
|
|---|
| 1868 | break;
|
|---|
| 1869 | case WINCHILDTYPE_SUBMIT:
|
|---|
| 1870 | mkWinChildcareWorkerThreadHandleSubmit(pWorker, pChild);
|
|---|
| 1871 | break;
|
|---|
| 1872 | case WINCHILDTYPE_REDIRECT:
|
|---|
| 1873 | mkWinChildcareWorkerThreadHandleRedirect(pWorker, pChild);
|
|---|
| 1874 | break;
|
|---|
| 1875 | #endif
|
|---|
| 1876 | default:
|
|---|
| 1877 | assert(0);
|
|---|
| 1878 | }
|
|---|
| 1879 |
|
|---|
| 1880 | /*
|
|---|
| 1881 | * Move the child to the completed list.
|
|---|
| 1882 | */
|
|---|
| 1883 | pTailExpect = NULL;
|
|---|
| 1884 | for (;;)
|
|---|
| 1885 | {
|
|---|
| 1886 | PWINCHILD pTailActual;
|
|---|
| 1887 | pChild->pNext = pTailExpect;
|
|---|
| 1888 | pTailActual = _InterlockedCompareExchangePointer(&g_pTailCompletedChildren, pChild, pTailExpect);
|
|---|
| 1889 | if (pTailActual != pTailExpect)
|
|---|
| 1890 | pTailExpect = pTailActual;
|
|---|
| 1891 | else
|
|---|
| 1892 | {
|
|---|
| 1893 | _InterlockedDecrement(&g_cPendingChildren);
|
|---|
| 1894 | if (pTailExpect)
|
|---|
| 1895 | break;
|
|---|
| 1896 | if (SetEvent(g_hEvtWaitChildren))
|
|---|
| 1897 | break;
|
|---|
| 1898 | fprintf(stderr, "SetEvent(g_hEvtWaitChildren=%p) failed: %u\n", g_hEvtWaitChildren, GetLastError());
|
|---|
| 1899 | break;
|
|---|
| 1900 | }
|
|---|
| 1901 | }
|
|---|
| 1902 | }
|
|---|
| 1903 | }
|
|---|
| 1904 | }
|
|---|
| 1905 |
|
|---|
| 1906 | _endthreadex(0);
|
|---|
| 1907 | return 0;
|
|---|
| 1908 | }
|
|---|
| 1909 |
|
|---|
| 1910 | /**
|
|---|
| 1911 | * Creates another childcare worker.
|
|---|
| 1912 | *
|
|---|
| 1913 | * @returns The new worker, if we succeeded.
|
|---|
| 1914 | */
|
|---|
| 1915 | static PWINCHILDCAREWORKER mkWinChildcareCreateWorker(void)
|
|---|
| 1916 | {
|
|---|
| 1917 | PWINCHILDCAREWORKER pWorker = (PWINCHILDCAREWORKER)xcalloc(sizeof(*pWorker));
|
|---|
| 1918 | pWorker->uMagic = WINCHILDCAREWORKER_MAGIC;
|
|---|
| 1919 | pWorker->hEvtIdle = CreateEvent(NULL, FALSE /*fManualReset*/, FALSE /*fInitialState*/, NULL /*pszName*/);
|
|---|
| 1920 | if (pWorker->hEvtIdle)
|
|---|
| 1921 | {
|
|---|
| 1922 | /* Before we start the thread, assign it to a processor group. */
|
|---|
| 1923 | if (g_cProcessorGroups > 1)
|
|---|
| 1924 | {
|
|---|
| 1925 | unsigned int cMaxInGroup;
|
|---|
| 1926 | unsigned int cInGroup;
|
|---|
| 1927 | unsigned int iGroup = g_idxProcessorGroupAllocator % g_cProcessorGroups;
|
|---|
| 1928 | pWorker->iProcessorGroup = iGroup;
|
|---|
| 1929 |
|
|---|
| 1930 | /* Advance. We employ a very simple strategy that does 50% in
|
|---|
| 1931 | each group for each group cycle. Odd processor counts are
|
|---|
| 1932 | caught in odd group cycles. The init function selects the
|
|---|
| 1933 | starting group based on make nesting level to avoid stressing
|
|---|
| 1934 | out the first group. */
|
|---|
| 1935 | cInGroup = ++g_idxProcessorInGroupAllocator;
|
|---|
| 1936 | cMaxInGroup = g_pacProcessorsInGroup[iGroup];
|
|---|
| 1937 | if ( !(cMaxInGroup & 1)
|
|---|
| 1938 | || !((g_idxProcessorGroupAllocator / g_cProcessorGroups) & 1))
|
|---|
| 1939 | cMaxInGroup /= 2;
|
|---|
| 1940 | else
|
|---|
| 1941 | cMaxInGroup = cMaxInGroup / 2 + 1;
|
|---|
| 1942 | if (cInGroup >= cMaxInGroup)
|
|---|
| 1943 | {
|
|---|
| 1944 | g_idxProcessorInGroupAllocator = 0;
|
|---|
| 1945 | g_idxProcessorGroupAllocator++;
|
|---|
| 1946 | }
|
|---|
| 1947 | }
|
|---|
| 1948 |
|
|---|
| 1949 | /* Try start the thread. */
|
|---|
| 1950 | pWorker->hThread = (HANDLE)_beginthreadex(NULL, 0 /*cbStack*/, mkWinChildcareWorkerThread, pWorker,
|
|---|
| 1951 | 0, &pWorker->tid);
|
|---|
| 1952 | if (pWorker->hThread != NULL)
|
|---|
| 1953 | {
|
|---|
| 1954 | g_papChildCareworkers[g_cChildCareworkers++] = pWorker;
|
|---|
| 1955 | return pWorker;
|
|---|
| 1956 | }
|
|---|
| 1957 | CloseHandle(pWorker->hEvtIdle);
|
|---|
| 1958 | }
|
|---|
| 1959 | pWorker->uMagic = ~WINCHILDCAREWORKER_MAGIC;
|
|---|
| 1960 | free(pWorker);
|
|---|
| 1961 | return NULL;
|
|---|
| 1962 | }
|
|---|
| 1963 |
|
|---|
| 1964 | /**
|
|---|
| 1965 | * Helper for copying argument and environment vectors.
|
|---|
| 1966 | *
|
|---|
| 1967 | * @returns Single alloc block copy.
|
|---|
| 1968 | * @param papszSrc The source vector.
|
|---|
| 1969 | * @param pcbStrings Where to return the size of the strings & terminator.
|
|---|
| 1970 | */
|
|---|
| 1971 | static char **mkWinChildCopyStringArray(char **papszSrc, size_t *pcbStrings)
|
|---|
| 1972 | {
|
|---|
| 1973 | const char *psz;
|
|---|
| 1974 | char **papszDstArray;
|
|---|
| 1975 | char *pszDstStr;
|
|---|
| 1976 | size_t i;
|
|---|
| 1977 |
|
|---|
| 1978 | /* Calc sizes first. */
|
|---|
| 1979 | size_t cbStrings = 1; /* (one extra for terminator string) */
|
|---|
| 1980 | size_t cStrings = 0;
|
|---|
| 1981 | while ((psz = papszSrc[cStrings]) != NULL)
|
|---|
| 1982 | {
|
|---|
| 1983 | cbStrings += strlen(psz) + 1;
|
|---|
| 1984 | cStrings++;
|
|---|
| 1985 | }
|
|---|
| 1986 | *pcbStrings = cbStrings;
|
|---|
| 1987 |
|
|---|
| 1988 | /* Allocate destination. */
|
|---|
| 1989 | papszDstArray = (char **)xmalloc(cbStrings + (cStrings + 1) * sizeof(papszDstArray[0]));
|
|---|
| 1990 | pszDstStr = (char *)&papszDstArray[cStrings + 1];
|
|---|
| 1991 |
|
|---|
| 1992 | /* Copy it. */
|
|---|
| 1993 | for (i = 0; i < cStrings; i++)
|
|---|
| 1994 | {
|
|---|
| 1995 | const char *pszSource = papszSrc[i];
|
|---|
| 1996 | size_t cchString = strlen(pszSource);
|
|---|
| 1997 | papszDstArray[i] = pszDstStr;
|
|---|
| 1998 | memcpy(pszDstStr, pszSource, cchString);
|
|---|
| 1999 | pszDstStr += cchString;
|
|---|
| 2000 | *pszDstStr++ = '\0';
|
|---|
| 2001 | }
|
|---|
| 2002 | *pszDstStr = '\0';
|
|---|
| 2003 | assert(&pszDstStr[1] - papszDstArray[0] == cbStrings);
|
|---|
| 2004 | papszDstArray[i] = NULL;
|
|---|
| 2005 | return papszDstArray;
|
|---|
| 2006 | }
|
|---|
| 2007 |
|
|---|
| 2008 | /**
|
|---|
| 2009 | * Allocate and init a WINCHILD.
|
|---|
| 2010 | *
|
|---|
| 2011 | * @returns The new windows child structure.
|
|---|
| 2012 | * @param enmType The child type.
|
|---|
| 2013 | */
|
|---|
| 2014 | static PWINCHILD mkWinChildNew(WINCHILDTYPE enmType)
|
|---|
| 2015 | {
|
|---|
| 2016 | PWINCHILD pChild = xcalloc(sizeof(*pChild));
|
|---|
| 2017 | pChild->enmType = enmType;
|
|---|
| 2018 | pChild->fCoreDumped = 0;
|
|---|
| 2019 | pChild->iSignal = 0;
|
|---|
| 2020 | pChild->iExitCode = 222222;
|
|---|
| 2021 | pChild->uMagic = WINCHILD_MAGIC;
|
|---|
| 2022 | pChild->pid = (intptr_t)pChild;
|
|---|
| 2023 | return pChild;
|
|---|
| 2024 | }
|
|---|
| 2025 |
|
|---|
| 2026 | /**
|
|---|
| 2027 | * Destructor for WINCHILD.
|
|---|
| 2028 | *
|
|---|
| 2029 | * @param pChild The child structure to destroy.
|
|---|
| 2030 | */
|
|---|
| 2031 | static void mkWinChildDelete(PWINCHILD pChild)
|
|---|
| 2032 | {
|
|---|
| 2033 | assert(pChild->uMagic == WINCHILD_MAGIC);
|
|---|
| 2034 | pChild->uMagic = ~WINCHILD_MAGIC;
|
|---|
| 2035 |
|
|---|
| 2036 | switch (pChild->enmType)
|
|---|
| 2037 | {
|
|---|
| 2038 | case WINCHILDTYPE_PROCESS:
|
|---|
| 2039 | {
|
|---|
| 2040 | if (pChild->u.Process.papszArgs)
|
|---|
| 2041 | {
|
|---|
| 2042 | free(pChild->u.Process.papszArgs);
|
|---|
| 2043 | pChild->u.Process.papszArgs = NULL;
|
|---|
| 2044 | }
|
|---|
| 2045 | if (pChild->u.Process.cbEnvStrings && pChild->u.Process.papszEnv)
|
|---|
| 2046 | {
|
|---|
| 2047 | free(pChild->u.Process.papszEnv);
|
|---|
| 2048 | pChild->u.Process.papszEnv = NULL;
|
|---|
| 2049 | }
|
|---|
| 2050 | if (pChild->u.Process.pszShell)
|
|---|
| 2051 | {
|
|---|
| 2052 | free(pChild->u.Process.pszShell);
|
|---|
| 2053 | pChild->u.Process.pszShell = NULL;
|
|---|
| 2054 | }
|
|---|
| 2055 | if (pChild->u.Process.hProcess)
|
|---|
| 2056 | {
|
|---|
| 2057 | CloseHandle(pChild->u.Process.hProcess);
|
|---|
| 2058 | pChild->u.Process.hProcess = NULL;
|
|---|
| 2059 | }
|
|---|
| 2060 | mkWinChildcareWorkerCloseStandardHandles(pChild);
|
|---|
| 2061 | break;
|
|---|
| 2062 | }
|
|---|
| 2063 |
|
|---|
| 2064 | #ifdef KMK
|
|---|
| 2065 | case WINCHILDTYPE_BUILT_IN:
|
|---|
| 2066 | if (pChild->u.BuiltIn.papszArgs)
|
|---|
| 2067 | {
|
|---|
| 2068 | free(pChild->u.BuiltIn.papszArgs);
|
|---|
| 2069 | pChild->u.BuiltIn.papszArgs = NULL;
|
|---|
| 2070 | }
|
|---|
| 2071 | if (pChild->u.BuiltIn.papszEnv)
|
|---|
| 2072 | {
|
|---|
| 2073 | free(pChild->u.BuiltIn.papszEnv);
|
|---|
| 2074 | pChild->u.BuiltIn.papszEnv = NULL;
|
|---|
| 2075 | }
|
|---|
| 2076 | break;
|
|---|
| 2077 |
|
|---|
| 2078 | case WINCHILDTYPE_APPEND:
|
|---|
| 2079 | if (pChild->u.Append.pszFilename)
|
|---|
| 2080 | {
|
|---|
| 2081 | free(pChild->u.Append.pszFilename);
|
|---|
| 2082 | pChild->u.Append.pszFilename = NULL;
|
|---|
| 2083 | }
|
|---|
| 2084 | if (pChild->u.Append.pszAppend)
|
|---|
| 2085 | {
|
|---|
| 2086 | free(pChild->u.Append.pszAppend);
|
|---|
| 2087 | pChild->u.Append.pszAppend = NULL;
|
|---|
| 2088 | }
|
|---|
| 2089 | break;
|
|---|
| 2090 |
|
|---|
| 2091 | case WINCHILDTYPE_SUBMIT:
|
|---|
| 2092 | if (pChild->u.Submit.pvSubmitWorker)
|
|---|
| 2093 | {
|
|---|
| 2094 | kSubmitSubProcCleanup((intptr_t)pChild->u.Submit.pvSubmitWorker);
|
|---|
| 2095 | pChild->u.Submit.pvSubmitWorker = NULL;
|
|---|
| 2096 | }
|
|---|
| 2097 | break;
|
|---|
| 2098 |
|
|---|
| 2099 | case WINCHILDTYPE_REDIRECT:
|
|---|
| 2100 | if (pChild->u.Redirect.hProcess)
|
|---|
| 2101 | {
|
|---|
| 2102 | CloseHandle(pChild->u.Redirect.hProcess);
|
|---|
| 2103 | pChild->u.Redirect.hProcess = NULL;
|
|---|
| 2104 | }
|
|---|
| 2105 | break;
|
|---|
| 2106 | #endif /* KMK */
|
|---|
| 2107 |
|
|---|
| 2108 | default:
|
|---|
| 2109 | assert(0);
|
|---|
| 2110 | }
|
|---|
| 2111 |
|
|---|
| 2112 | free(pChild);
|
|---|
| 2113 | }
|
|---|
| 2114 |
|
|---|
| 2115 | /**
|
|---|
| 2116 | * Queues the child with a worker, creating new workers if necessary.
|
|---|
| 2117 | *
|
|---|
| 2118 | * @returns 0 on success, windows error code on failure (child destroyed).
|
|---|
| 2119 | * @param pChild The child.
|
|---|
| 2120 | * @param pPid Where to return the PID (optional).
|
|---|
| 2121 | */
|
|---|
| 2122 | static int mkWinChildPushToCareWorker(PWINCHILD pChild, pid_t *pPid)
|
|---|
| 2123 | {
|
|---|
| 2124 | PWINCHILDCAREWORKER pWorker = NULL;
|
|---|
| 2125 | PWINCHILD pOldChild;
|
|---|
| 2126 | PWINCHILD pCurChild;
|
|---|
| 2127 |
|
|---|
| 2128 | /*
|
|---|
| 2129 | * There are usually idle workers around, except for at the start.
|
|---|
| 2130 | */
|
|---|
| 2131 | if (g_cIdleChildcareWorkers > 0)
|
|---|
| 2132 | {
|
|---|
| 2133 | /*
|
|---|
| 2134 | * Try the idle hint first and move forward from it.
|
|---|
| 2135 | */
|
|---|
| 2136 | unsigned int const cWorkers = g_cChildCareworkers;
|
|---|
| 2137 | unsigned int iHint = g_idxLastChildcareWorker;
|
|---|
| 2138 | unsigned int i;
|
|---|
| 2139 | for (i = iHint; i < cWorkers; i++)
|
|---|
| 2140 | {
|
|---|
| 2141 | PWINCHILDCAREWORKER pPossibleWorker = g_papChildCareworkers[i];
|
|---|
| 2142 | if (pPossibleWorker->fIdle)
|
|---|
| 2143 | {
|
|---|
| 2144 | pWorker = pPossibleWorker;
|
|---|
| 2145 | break;
|
|---|
| 2146 | }
|
|---|
| 2147 | }
|
|---|
| 2148 | if (!pWorker)
|
|---|
| 2149 | {
|
|---|
| 2150 | /* Scan from the start. */
|
|---|
| 2151 | if (iHint > cWorkers)
|
|---|
| 2152 | iHint = cWorkers;
|
|---|
| 2153 | for (i = 0; i < iHint; i++)
|
|---|
| 2154 | {
|
|---|
| 2155 | PWINCHILDCAREWORKER pPossibleWorker = g_papChildCareworkers[i];
|
|---|
| 2156 | if (pPossibleWorker->fIdle)
|
|---|
| 2157 | {
|
|---|
| 2158 | pWorker = pPossibleWorker;
|
|---|
| 2159 | break;
|
|---|
| 2160 | }
|
|---|
| 2161 | }
|
|---|
| 2162 | }
|
|---|
| 2163 | }
|
|---|
| 2164 | if (!pWorker)
|
|---|
| 2165 | {
|
|---|
| 2166 | /*
|
|---|
| 2167 | * Try create more workers if we haven't reached the max yet.
|
|---|
| 2168 | */
|
|---|
| 2169 | if (g_cChildCareworkers < g_cChildCareworkersMax)
|
|---|
| 2170 | pWorker = mkWinChildcareCreateWorker();
|
|---|
| 2171 |
|
|---|
| 2172 | /*
|
|---|
| 2173 | * Queue it with an existing worker. Look for one without anthing extra scheduled.
|
|---|
| 2174 | */
|
|---|
| 2175 | if (!pWorker)
|
|---|
| 2176 | {
|
|---|
| 2177 | unsigned int i = g_cChildCareworkers;
|
|---|
| 2178 | if (i == 0)
|
|---|
| 2179 | fatal(NILF, 0, _("Failed to create worker threads for managing child processes!\n"));
|
|---|
| 2180 | pWorker = g_papChildCareworkers[--i];
|
|---|
| 2181 | if (pWorker->pTailTodoChildren)
|
|---|
| 2182 | while (i-- > 0)
|
|---|
| 2183 | {
|
|---|
| 2184 | PWINCHILDCAREWORKER pPossibleWorker = g_papChildCareworkers[i];
|
|---|
| 2185 | if (!pPossibleWorker->pTailTodoChildren)
|
|---|
| 2186 | {
|
|---|
| 2187 | pWorker = pPossibleWorker;
|
|---|
| 2188 | break;
|
|---|
| 2189 | }
|
|---|
| 2190 | }
|
|---|
| 2191 | }
|
|---|
| 2192 | }
|
|---|
| 2193 |
|
|---|
| 2194 | /*
|
|---|
| 2195 | * Do the queueing.
|
|---|
| 2196 | */
|
|---|
| 2197 | pOldChild = NULL;
|
|---|
| 2198 | for (;;)
|
|---|
| 2199 | {
|
|---|
| 2200 | pChild->pNext = pOldChild;
|
|---|
| 2201 | pCurChild = _InterlockedCompareExchangePointer((void **)&pWorker->pTailTodoChildren, pChild, pOldChild);
|
|---|
| 2202 | if (pCurChild == pOldChild)
|
|---|
| 2203 | {
|
|---|
| 2204 | DWORD volatile dwErr;
|
|---|
| 2205 | _InterlockedIncrement(&g_cPendingChildren);
|
|---|
| 2206 | if ( !pWorker->fIdle
|
|---|
| 2207 | || SetEvent(pWorker->hEvtIdle))
|
|---|
| 2208 | {
|
|---|
| 2209 | *pPid = pChild->pid;
|
|---|
| 2210 | return 0;
|
|---|
| 2211 | }
|
|---|
| 2212 |
|
|---|
| 2213 | _InterlockedDecrement(&g_cPendingChildren);
|
|---|
| 2214 | dwErr = GetLastError();
|
|---|
| 2215 | assert(0);
|
|---|
| 2216 | mkWinChildDelete(pChild);
|
|---|
| 2217 | return dwErr ? dwErr : -20;
|
|---|
| 2218 | }
|
|---|
| 2219 | pOldChild = pCurChild;
|
|---|
| 2220 | }
|
|---|
| 2221 | }
|
|---|
| 2222 |
|
|---|
| 2223 | /**
|
|---|
| 2224 | * Creates a regular child process (job.c).
|
|---|
| 2225 | *
|
|---|
| 2226 | * Will copy the information and push it to a childcare thread that does the
|
|---|
| 2227 | * actual process creation.
|
|---|
| 2228 | *
|
|---|
| 2229 | * @returns 0 on success, windows status code on failure.
|
|---|
| 2230 | * @param papszArgs The arguments.
|
|---|
| 2231 | * @param papszEnv The environment (optional).
|
|---|
| 2232 | * @param pszShell The SHELL variable value (optional).
|
|---|
| 2233 | * @param pMkChild The make child structure (optional).
|
|---|
| 2234 | * @param pPid Where to return the pid.
|
|---|
| 2235 | */
|
|---|
| 2236 | int MkWinChildCreate(char **papszArgs, char **papszEnv, const char *pszShell, struct child *pMkChild, pid_t *pPid)
|
|---|
| 2237 | {
|
|---|
| 2238 | PWINCHILD pChild = mkWinChildNew(WINCHILDTYPE_PROCESS);
|
|---|
| 2239 | pChild->pMkChild = pMkChild;
|
|---|
| 2240 |
|
|---|
| 2241 | pChild->u.Process.papszArgs = mkWinChildCopyStringArray(papszArgs, &pChild->u.Process.cbArgsStrings);
|
|---|
| 2242 | if ( !papszEnv
|
|---|
| 2243 | || !pMkChild
|
|---|
| 2244 | || pMkChild->environment == papszEnv)
|
|---|
| 2245 | {
|
|---|
| 2246 | pChild->u.Process.cbEnvStrings = 0;
|
|---|
| 2247 | pChild->u.Process.papszEnv = papszEnv;
|
|---|
| 2248 | }
|
|---|
| 2249 | else
|
|---|
| 2250 | pChild->u.Process.papszEnv = mkWinChildCopyStringArray(papszEnv, &pChild->u.Process.cbEnvStrings);
|
|---|
| 2251 | if (pszShell)
|
|---|
| 2252 | pChild->u.Process.pszShell = xstrdup(pszShell);
|
|---|
| 2253 | pChild->u.Process.hStdOut = INVALID_HANDLE_VALUE;
|
|---|
| 2254 | pChild->u.Process.hStdErr = INVALID_HANDLE_VALUE;
|
|---|
| 2255 |
|
|---|
| 2256 | return mkWinChildPushToCareWorker(pChild, pPid);
|
|---|
| 2257 | }
|
|---|
| 2258 |
|
|---|
| 2259 | /**
|
|---|
| 2260 | * Creates a chile process with a pipe hooked up to stdout.
|
|---|
| 2261 | *
|
|---|
| 2262 | * @returns 0 on success, non-zero on failure.
|
|---|
| 2263 | * @param papszArgs The argument vector.
|
|---|
| 2264 | * @param papszEnv The environment vector (optional).
|
|---|
| 2265 | * @param fdErr File descriptor to hook up to stderr.
|
|---|
| 2266 | * @param pPid Where to return the pid.
|
|---|
| 2267 | * @param pfdReadPipe Where to return the read end of the pipe.
|
|---|
| 2268 | */
|
|---|
| 2269 | int MkWinChildCreateWithStdOutPipe(char **papszArgs, char **papszEnv, int fdErr, pid_t *pPid, int *pfdReadPipe)
|
|---|
| 2270 | {
|
|---|
| 2271 | /*
|
|---|
| 2272 | * Create the pipe.
|
|---|
| 2273 | */
|
|---|
| 2274 | HANDLE hReadPipe;
|
|---|
| 2275 | HANDLE hWritePipe;
|
|---|
| 2276 | if (CreatePipe(&hReadPipe, &hWritePipe, NULL, 0 /* default size */))
|
|---|
| 2277 | {
|
|---|
| 2278 | if (SetHandleInformation(hWritePipe, HANDLE_FLAG_INHERIT /* clear */ , HANDLE_FLAG_INHERIT /*set*/))
|
|---|
| 2279 | {
|
|---|
| 2280 | int fdReadPipe = _open_osfhandle((intptr_t)hReadPipe, O_RDONLY);
|
|---|
| 2281 | if (fdReadPipe >= 0)
|
|---|
| 2282 | {
|
|---|
| 2283 | PWINCHILD pChild;
|
|---|
| 2284 | int rc;
|
|---|
| 2285 |
|
|---|
| 2286 | /*
|
|---|
| 2287 | * Get a handle for fdErr. Ignore failure.
|
|---|
| 2288 | */
|
|---|
| 2289 | HANDLE hStdErr = INVALID_HANDLE_VALUE;
|
|---|
| 2290 | if (fdErr >= 0)
|
|---|
| 2291 | {
|
|---|
| 2292 | HANDLE hNative = (HANDLE)_get_osfhandle(fdErr);
|
|---|
| 2293 | if (!DuplicateHandle(GetCurrentProcess(), hNative, GetCurrentProcess(),
|
|---|
| 2294 | &hStdErr, 0 /*DesiredAccess*/, TRUE /*fInherit*/, DUPLICATE_SAME_ACCESS))
|
|---|
| 2295 | {
|
|---|
| 2296 | ONN(error, NILF, _("DuplicateHandle failed on stderr descriptor (%u): %u\n"), fdErr, GetLastError());
|
|---|
| 2297 | hStdErr = INVALID_HANDLE_VALUE;
|
|---|
| 2298 | }
|
|---|
| 2299 | }
|
|---|
| 2300 |
|
|---|
| 2301 | /*
|
|---|
| 2302 | * Push it off to the worker thread.
|
|---|
| 2303 | */
|
|---|
| 2304 | pChild = mkWinChildNew(WINCHILDTYPE_PROCESS);
|
|---|
| 2305 | pChild->u.Process.papszArgs = mkWinChildCopyStringArray(papszArgs, &pChild->u.Process.cbArgsStrings);
|
|---|
| 2306 | pChild->u.Process.papszEnv = mkWinChildCopyStringArray(papszEnv ? papszEnv : environ,
|
|---|
| 2307 | &pChild->u.Process.cbEnvStrings);
|
|---|
| 2308 | //if (pszShell)
|
|---|
| 2309 | // pChild->u.Process.pszShell = xstrdup(pszShell);
|
|---|
| 2310 | pChild->u.Process.hStdOut = hWritePipe;
|
|---|
| 2311 | pChild->u.Process.hStdErr = hStdErr;
|
|---|
| 2312 | pChild->u.Process.fCloseStdErr = TRUE;
|
|---|
| 2313 | pChild->u.Process.fCloseStdOut = TRUE;
|
|---|
| 2314 |
|
|---|
| 2315 | rc = mkWinChildPushToCareWorker(pChild, pPid);
|
|---|
| 2316 | if (rc == 0)
|
|---|
| 2317 | *pfdReadPipe = fdReadPipe;
|
|---|
| 2318 | else
|
|---|
| 2319 | {
|
|---|
| 2320 | ON(error, NILF, _("mkWinChildPushToCareWorker failed on pipe: %d\n"), rc);
|
|---|
| 2321 | close(fdReadPipe);
|
|---|
| 2322 | *pfdReadPipe = -1;
|
|---|
| 2323 | *pPid = -1;
|
|---|
| 2324 | }
|
|---|
| 2325 | return rc;
|
|---|
| 2326 | }
|
|---|
| 2327 |
|
|---|
| 2328 | ON(error, NILF, _("_open_osfhandle failed on pipe: %u\n"), errno);
|
|---|
| 2329 | }
|
|---|
| 2330 | else
|
|---|
| 2331 | ON(error, NILF, _("SetHandleInformation failed on pipe: %u\n"), GetLastError());
|
|---|
| 2332 | if (hReadPipe != INVALID_HANDLE_VALUE)
|
|---|
| 2333 | CloseHandle(hReadPipe);
|
|---|
| 2334 | CloseHandle(hWritePipe);
|
|---|
| 2335 | }
|
|---|
| 2336 | else
|
|---|
| 2337 | ON(error, NILF, _("CreatePipe failed: %u\n"), GetLastError());
|
|---|
| 2338 | *pfdReadPipe = -1;
|
|---|
| 2339 | *pPid = -1;
|
|---|
| 2340 | return -1;
|
|---|
| 2341 | }
|
|---|
| 2342 |
|
|---|
| 2343 | #ifdef KMK
|
|---|
| 2344 |
|
|---|
| 2345 | /**
|
|---|
| 2346 | * Interface used by kmkbuiltin.c for executing builtin commands on threads.
|
|---|
| 2347 | *
|
|---|
| 2348 | * @returns 0 on success, windows status code on failure.
|
|---|
| 2349 | * @param pBuiltIn The kmk built-in command entry.
|
|---|
| 2350 | * @param cArgs The number of arguments in papszArgs.
|
|---|
| 2351 | * @param papszArgs The argument vector.
|
|---|
| 2352 | * @param papszEnv The environment vector, optional.
|
|---|
| 2353 | * @param pMkChild The make child structure.
|
|---|
| 2354 | * @param pPid Where to return the pid.
|
|---|
| 2355 | */
|
|---|
| 2356 | int MkWinChildCreateBuiltIn(PCKMKBUILTINENTRY pBuiltIn, int cArgs, char **papszArgs, char **papszEnv,
|
|---|
| 2357 | struct child *pMkChild, pid_t *pPid)
|
|---|
| 2358 | {
|
|---|
| 2359 | size_t cbIgnored;
|
|---|
| 2360 | PWINCHILD pChild = mkWinChildNew(WINCHILDTYPE_BUILT_IN);
|
|---|
| 2361 | pChild->pMkChild = pMkChild;
|
|---|
| 2362 | pChild->u.BuiltIn.pBuiltIn = pBuiltIn;
|
|---|
| 2363 | pChild->u.BuiltIn.cArgs = cArgs;
|
|---|
| 2364 | pChild->u.BuiltIn.papszArgs = mkWinChildCopyStringArray(papszArgs, &cbIgnored);
|
|---|
| 2365 | pChild->u.BuiltIn.papszEnv = papszEnv ? mkWinChildCopyStringArray(papszEnv, &cbIgnored) : NULL;
|
|---|
| 2366 | return mkWinChildPushToCareWorker(pChild, pPid);
|
|---|
| 2367 | }
|
|---|
| 2368 |
|
|---|
| 2369 | /**
|
|---|
| 2370 | * Interface used by append.c for do the slow file system part.
|
|---|
| 2371 | *
|
|---|
| 2372 | * This will append the given buffer to the specified file and free the buffer.
|
|---|
| 2373 | *
|
|---|
| 2374 | * @returns 0 on success, windows status code on failure.
|
|---|
| 2375 | *
|
|---|
| 2376 | * @param pszFilename The name of the file to append to.
|
|---|
| 2377 | * @param ppszAppend What to append. The pointer pointed to is set to
|
|---|
| 2378 | * NULL once we've taken ownership of the buffer and
|
|---|
| 2379 | * promise to free it.
|
|---|
| 2380 | * @param cbAppend How much to append.
|
|---|
| 2381 | * @param fTruncate Whether to truncate the file before appending to it.
|
|---|
| 2382 | * @param pMkChild The make child structure.
|
|---|
| 2383 | * @param pPid Where to return the pid.
|
|---|
| 2384 | */
|
|---|
| 2385 | int MkWinChildCreateAppend(const char *pszFilename, char **ppszAppend, size_t cbAppend, int fTruncate,
|
|---|
| 2386 | struct child *pMkChild, pid_t *pPid)
|
|---|
| 2387 | {
|
|---|
| 2388 | size_t cbFilename = strlen(pszFilename) + 1;
|
|---|
| 2389 | PWINCHILD pChild = mkWinChildNew(WINCHILDTYPE_APPEND);
|
|---|
| 2390 | pChild->pMkChild = pMkChild;
|
|---|
| 2391 | pChild->u.Append.fTruncate = fTruncate;
|
|---|
| 2392 | pChild->u.Append.pszAppend = *ppszAppend;
|
|---|
| 2393 | pChild->u.Append.cbAppend = cbAppend;
|
|---|
| 2394 | pChild->u.Append.pszFilename = (char *)memcpy(xmalloc(cbFilename), pszFilename, cbFilename);
|
|---|
| 2395 | *ppszAppend = NULL;
|
|---|
| 2396 | return mkWinChildPushToCareWorker(pChild, pPid);
|
|---|
| 2397 | }
|
|---|
| 2398 |
|
|---|
| 2399 | /**
|
|---|
| 2400 | * Interface used by kSubmit.c for registering stuff to wait on.
|
|---|
| 2401 | *
|
|---|
| 2402 | * @returns 0 on success, windows status code on failure.
|
|---|
| 2403 | * @param hEvent The event object handle to wait on.
|
|---|
| 2404 | * @param pvSubmitWorker The argument to pass back to kSubmit to clean up.
|
|---|
| 2405 | * @param pPid Where to return the pid.
|
|---|
| 2406 | */
|
|---|
| 2407 | int MkWinChildCreateSubmit(intptr_t hEvent, void *pvSubmitWorker, pid_t *pPid)
|
|---|
| 2408 | {
|
|---|
| 2409 | PWINCHILD pChild = mkWinChildNew(WINCHILDTYPE_SUBMIT);
|
|---|
| 2410 | pChild->u.Submit.hEvent = (HANDLE)hEvent;
|
|---|
| 2411 | pChild->u.Submit.pvSubmitWorker = pvSubmitWorker;
|
|---|
| 2412 | return mkWinChildPushToCareWorker(pChild, pPid);
|
|---|
| 2413 | }
|
|---|
| 2414 |
|
|---|
| 2415 | /**
|
|---|
| 2416 | * Interface used by redirect.c for registering stuff to wait on.
|
|---|
| 2417 | *
|
|---|
| 2418 | * @returns 0 on success, windows status code on failure.
|
|---|
| 2419 | * @param hProcess The process object to wait on.
|
|---|
| 2420 | * @param pPid Where to return the pid.
|
|---|
| 2421 | */
|
|---|
| 2422 | int MkWinChildCreateRedirect(intptr_t hProcess, pid_t *pPid)
|
|---|
| 2423 | {
|
|---|
| 2424 | PWINCHILD pChild = mkWinChildNew(WINCHILDTYPE_REDIRECT);
|
|---|
| 2425 | pChild->u.Redirect.hProcess = (HANDLE)hProcess;
|
|---|
| 2426 | return mkWinChildPushToCareWorker(pChild, pPid);
|
|---|
| 2427 | }
|
|---|
| 2428 |
|
|---|
| 2429 | #endif /* CONFIG_NEW_WIN_CHILDREN */
|
|---|
| 2430 |
|
|---|
| 2431 | /**
|
|---|
| 2432 | * Interface used to kill process when processing Ctrl-C and fatal errors.
|
|---|
| 2433 | *
|
|---|
| 2434 | * @returns 0 on success, -1 & errno on error.
|
|---|
| 2435 | * @param pid The process to kill (PWINCHILD).
|
|---|
| 2436 | * @param iSignal What to kill it with.
|
|---|
| 2437 | * @param pMkChild The make child structure for validation.
|
|---|
| 2438 | */
|
|---|
| 2439 | int MkWinChildKill(pid_t pid, int iSignal, struct child *pMkChild)
|
|---|
| 2440 | {
|
|---|
| 2441 | PWINCHILD pChild = (PWINCHILD)pid;
|
|---|
| 2442 | if (pChild)
|
|---|
| 2443 | {
|
|---|
| 2444 | assert(pChild->uMagic == WINCHILD_MAGIC);
|
|---|
| 2445 | if (pChild->uMagic == WINCHILD_MAGIC)
|
|---|
| 2446 | {
|
|---|
| 2447 | switch (pChild->enmType)
|
|---|
| 2448 | {
|
|---|
| 2449 | case WINCHILDTYPE_PROCESS:
|
|---|
| 2450 | assert(pChild->pMkChild == pMkChild);
|
|---|
| 2451 | TerminateProcess(pChild->u.Process.hProcess, DBG_TERMINATE_PROCESS);
|
|---|
| 2452 | pChild->iSignal = iSignal;
|
|---|
| 2453 | break;
|
|---|
| 2454 | #ifdef KMK
|
|---|
| 2455 | case WINCHILDTYPE_SUBMIT:
|
|---|
| 2456 | {
|
|---|
| 2457 | pChild->iSignal = iSignal;
|
|---|
| 2458 | SetEvent(pChild->u.Submit.hEvent);
|
|---|
| 2459 | break;
|
|---|
| 2460 | }
|
|---|
| 2461 |
|
|---|
| 2462 | case WINCHILDTYPE_REDIRECT:
|
|---|
| 2463 | TerminateProcess(pChild->u.Redirect.hProcess, DBG_TERMINATE_PROCESS);
|
|---|
| 2464 | pChild->iSignal = iSignal;
|
|---|
| 2465 | break;
|
|---|
| 2466 |
|
|---|
| 2467 | case WINCHILDTYPE_BUILT_IN:
|
|---|
| 2468 | break;
|
|---|
| 2469 |
|
|---|
| 2470 | #endif /* KMK */
|
|---|
| 2471 | default:
|
|---|
| 2472 | assert(0);
|
|---|
| 2473 | }
|
|---|
| 2474 | }
|
|---|
| 2475 | }
|
|---|
| 2476 | return -1;
|
|---|
| 2477 | }
|
|---|
| 2478 |
|
|---|
| 2479 | /**
|
|---|
| 2480 | * Wait for a child process to complete
|
|---|
| 2481 | *
|
|---|
| 2482 | * @returns 0 on success, windows error code on failure.
|
|---|
| 2483 | * @param fBlock Whether to block.
|
|---|
| 2484 | * @param pPid Where to return the pid if a child process
|
|---|
| 2485 | * completed. This is set to zero if none.
|
|---|
| 2486 | * @param piExitCode Where to return the exit code.
|
|---|
| 2487 | * @param piSignal Where to return the exit signal number.
|
|---|
| 2488 | * @param pfCoreDumped Where to return the core dumped indicator.
|
|---|
| 2489 | * @param ppMkChild Where to return the associated struct child pointer.
|
|---|
| 2490 | */
|
|---|
| 2491 | int MkWinChildWait(int fBlock, pid_t *pPid, int *piExitCode, int *piSignal, int *pfCoreDumped, struct child **ppMkChild)
|
|---|
| 2492 | {
|
|---|
| 2493 | PWINCHILD pChild;
|
|---|
| 2494 |
|
|---|
| 2495 | *pPid = 0;
|
|---|
| 2496 | *piExitCode = -222222;
|
|---|
| 2497 | *pfCoreDumped = 0;
|
|---|
| 2498 | *ppMkChild = NULL;
|
|---|
| 2499 |
|
|---|
| 2500 | /*
|
|---|
| 2501 | * Wait if necessary.
|
|---|
| 2502 | */
|
|---|
| 2503 | if (fBlock && !g_pTailCompletedChildren && g_cPendingChildren > 0)
|
|---|
| 2504 | {
|
|---|
| 2505 | DWORD dwStatus = WaitForSingleObject(g_hEvtWaitChildren, INFINITE);
|
|---|
| 2506 | if (dwStatus == WAIT_FAILED)
|
|---|
| 2507 | return (int)GetLastError();
|
|---|
| 2508 | }
|
|---|
| 2509 |
|
|---|
| 2510 | /*
|
|---|
| 2511 | * Try unlink the last child in the LIFO.
|
|---|
| 2512 | */
|
|---|
| 2513 | pChild = g_pTailCompletedChildren;
|
|---|
| 2514 | if (!pChild)
|
|---|
| 2515 | return 0;
|
|---|
| 2516 | pChild = mkWinChildDequeFromLifo(&g_pTailCompletedChildren, pChild);
|
|---|
| 2517 | assert(pChild);
|
|---|
| 2518 |
|
|---|
| 2519 | /*
|
|---|
| 2520 | * Set return values and ditch the child structure.
|
|---|
| 2521 | */
|
|---|
| 2522 | *pPid = pChild->pid;
|
|---|
| 2523 | *piExitCode = pChild->iExitCode;
|
|---|
| 2524 | *pfCoreDumped = pChild->fCoreDumped;
|
|---|
| 2525 | *ppMkChild = pChild->pMkChild;
|
|---|
| 2526 | switch (pChild->enmType)
|
|---|
| 2527 | {
|
|---|
| 2528 | case WINCHILDTYPE_PROCESS:
|
|---|
| 2529 | break;
|
|---|
| 2530 | #ifdef KMK
|
|---|
| 2531 | case WINCHILDTYPE_BUILT_IN:
|
|---|
| 2532 | case WINCHILDTYPE_APPEND:
|
|---|
| 2533 | case WINCHILDTYPE_SUBMIT:
|
|---|
| 2534 | case WINCHILDTYPE_REDIRECT:
|
|---|
| 2535 | break;
|
|---|
| 2536 | #endif /* KMK */
|
|---|
| 2537 | default:
|
|---|
| 2538 | assert(0);
|
|---|
| 2539 | }
|
|---|
| 2540 | mkWinChildDelete(pChild);
|
|---|
| 2541 |
|
|---|
| 2542 | #ifdef KMK
|
|---|
| 2543 | /* Flush the volatile directory cache. */
|
|---|
| 2544 | dir_cache_invalid_after_job();
|
|---|
| 2545 | #endif
|
|---|
| 2546 | return 0;
|
|---|
| 2547 | }
|
|---|
| 2548 |
|
|---|
| 2549 | /**
|
|---|
| 2550 | * Get the child completed event handle.
|
|---|
| 2551 | *
|
|---|
| 2552 | * Needed when w32os.c is waiting for a job token to become available, given
|
|---|
| 2553 | * that completed children is the typical source of these tokens (esp. for kmk).
|
|---|
| 2554 | *
|
|---|
| 2555 | * @returns Zero if completed children, event handle if waiting is required.
|
|---|
| 2556 | */
|
|---|
| 2557 | intptr_t MkWinChildGetCompleteEventHandle(void)
|
|---|
| 2558 | {
|
|---|
| 2559 | /* We don't return the handle if we've got completed children. This
|
|---|
| 2560 | is a safe guard against being called twice in a row without any
|
|---|
| 2561 | MkWinChildWait call inbetween. */
|
|---|
| 2562 | if (!g_pTailCompletedChildren)
|
|---|
| 2563 | return (intptr_t)g_hEvtWaitChildren;
|
|---|
| 2564 | return 0;
|
|---|
| 2565 | }
|
|---|
| 2566 |
|
|---|
| 2567 | /**
|
|---|
| 2568 | * Emulate execv() for restarting kmk after one ore more makefiles has been
|
|---|
| 2569 | * made.
|
|---|
| 2570 | *
|
|---|
| 2571 | * Does not return.
|
|---|
| 2572 | *
|
|---|
| 2573 | * @param papszArgs The arguments.
|
|---|
| 2574 | * @param papszEnv The environment.
|
|---|
| 2575 | */
|
|---|
| 2576 | void MkWinChildReExecMake(char **papszArgs, char **papszEnv)
|
|---|
| 2577 | {
|
|---|
| 2578 | PROCESS_INFORMATION ProcInfo;
|
|---|
| 2579 | STARTUPINFOW StartupInfo;
|
|---|
| 2580 | WCHAR *pwszCommandLine;
|
|---|
| 2581 | WCHAR *pwszzEnvironment;
|
|---|
| 2582 | WCHAR *pwszPathIgnored;
|
|---|
| 2583 | int rc;
|
|---|
| 2584 |
|
|---|
| 2585 | /*
|
|---|
| 2586 | * Get the executable name.
|
|---|
| 2587 | */
|
|---|
| 2588 | WCHAR wszImageName[MKWINCHILD_MAX_PATH];
|
|---|
| 2589 | DWORD cwcImageName = GetModuleFileNameW(GetModuleHandle(NULL), wszImageName, MKWINCHILD_MAX_PATH);
|
|---|
| 2590 | if (cwcImageName == 0)
|
|---|
| 2591 | ON(fatal, NILF, _("MkWinChildReExecMake: GetModuleFileName failed: %u\n"), GetLastError());
|
|---|
| 2592 |
|
|---|
| 2593 | /*
|
|---|
| 2594 | * Create the command line and environment.
|
|---|
| 2595 | */
|
|---|
| 2596 | rc = mkWinChildcareWorkerConvertCommandline(papszArgs, 0 /*fFlags*/, &pwszCommandLine);
|
|---|
| 2597 | if (rc != 0)
|
|---|
| 2598 | ON(fatal, NILF, _("MkWinChildReExecMake: mkWinChildcareWorkerConvertCommandline failed: %u\n"), rc);
|
|---|
| 2599 |
|
|---|
| 2600 | rc = mkWinChildcareWorkerConvertEnvironment(papszEnv ? papszEnv : environ, 0 /*cbEnvStrings*/,
|
|---|
| 2601 | &pwszzEnvironment, &pwszPathIgnored);
|
|---|
| 2602 | if (rc != 0)
|
|---|
| 2603 | ON(fatal, NILF, _("MkWinChildReExecMake: mkWinChildcareWorkerConvertEnvironment failed: %u\n"), rc);
|
|---|
| 2604 |
|
|---|
| 2605 |
|
|---|
| 2606 | /*
|
|---|
| 2607 | * Fill out the startup info and try create the process.
|
|---|
| 2608 | */
|
|---|
| 2609 | memset(&ProcInfo, 0, sizeof(ProcInfo));
|
|---|
| 2610 | memset(&StartupInfo, 0, sizeof(StartupInfo));
|
|---|
| 2611 | StartupInfo.cb = sizeof(StartupInfo);
|
|---|
| 2612 | GetStartupInfoW(&StartupInfo);
|
|---|
| 2613 | if (!CreateProcessW(wszImageName, pwszCommandLine, NULL /*pProcSecAttr*/, NULL /*pThreadSecAttr*/,
|
|---|
| 2614 | TRUE /*fInheritHandles*/, CREATE_UNICODE_ENVIRONMENT, pwszzEnvironment, NULL /*pwsz*/,
|
|---|
| 2615 | &StartupInfo, &ProcInfo))
|
|---|
| 2616 | ON(fatal, NILF, _("MkWinChildReExecMake: CreateProcessW failed: %u\n"), GetLastError());
|
|---|
| 2617 | CloseHandle(ProcInfo.hThread);
|
|---|
| 2618 |
|
|---|
| 2619 | /*
|
|---|
| 2620 | * Wait for it to complete and forward the status code to our parent.
|
|---|
| 2621 | */
|
|---|
| 2622 | for (;;)
|
|---|
| 2623 | {
|
|---|
| 2624 | DWORD dwExitCode = -2222;
|
|---|
| 2625 | DWORD dwStatus = WaitForSingleObject(ProcInfo.hProcess, INFINITE);
|
|---|
| 2626 | if ( dwStatus == WAIT_IO_COMPLETION
|
|---|
| 2627 | || dwStatus == WAIT_TIMEOUT /* whatever */)
|
|---|
| 2628 | continue; /* however unlikely, these aren't fatal. */
|
|---|
| 2629 |
|
|---|
| 2630 | /* Get the status code and terminate. */
|
|---|
| 2631 | if (dwStatus == WAIT_OBJECT_0)
|
|---|
| 2632 | {
|
|---|
| 2633 | if (!GetExitCodeProcess(ProcInfo.hProcess, &dwExitCode))
|
|---|
| 2634 | {
|
|---|
| 2635 | ON(fatal, NILF, _("MkWinChildReExecMake: GetExitCodeProcess failed: %u\n"), GetLastError());
|
|---|
| 2636 | dwExitCode = -2222;
|
|---|
| 2637 | }
|
|---|
| 2638 | }
|
|---|
| 2639 | else if (dwStatus)
|
|---|
| 2640 | dwExitCode = dwStatus;
|
|---|
| 2641 |
|
|---|
| 2642 | CloseHandle(ProcInfo.hProcess);
|
|---|
| 2643 | for (;;)
|
|---|
| 2644 | exit(dwExitCode);
|
|---|
| 2645 | }
|
|---|
| 2646 | }
|
|---|
| 2647 |
|
|---|
| 2648 | #ifdef WITH_RW_LOCK
|
|---|
| 2649 | /** Serialization with kmkbuiltin_redirect. */
|
|---|
| 2650 | void MkWinChildExclusiveAcquire(void)
|
|---|
| 2651 | {
|
|---|
| 2652 | AcquireSRWLockExclusive(&g_RWLock);
|
|---|
| 2653 | }
|
|---|
| 2654 |
|
|---|
| 2655 | /** Serialization with kmkbuiltin_redirect. */
|
|---|
| 2656 | void MkWinChildExclusiveRelease(void)
|
|---|
| 2657 | {
|
|---|
| 2658 | ReleaseSRWLockExclusive(&g_RWLock);
|
|---|
| 2659 | }
|
|---|
| 2660 | #endif /* WITH_RW_LOCK */
|
|---|
| 2661 |
|
|---|
| 2662 | /**
|
|---|
| 2663 | * Implementation of the CLOSE_ON_EXEC macro.
|
|---|
| 2664 | *
|
|---|
| 2665 | * @returns errno value.
|
|---|
| 2666 | * @param fd The file descriptor to hide from children.
|
|---|
| 2667 | */
|
|---|
| 2668 | int MkWinChildUnrelatedCloseOnExec(int fd)
|
|---|
| 2669 | {
|
|---|
| 2670 | if (fd >= 0)
|
|---|
| 2671 | {
|
|---|
| 2672 | HANDLE hNative = (HANDLE)_get_osfhandle(fd);
|
|---|
| 2673 | if (hNative != INVALID_HANDLE_VALUE && hNative != NULL)
|
|---|
| 2674 | {
|
|---|
| 2675 | if (SetHandleInformation(hNative, HANDLE_FLAG_INHERIT /*clear*/ , 0 /*set*/))
|
|---|
| 2676 | return 0;
|
|---|
| 2677 | }
|
|---|
| 2678 | return errno;
|
|---|
| 2679 | }
|
|---|
| 2680 | return EINVAL;
|
|---|
| 2681 | }
|
|---|
| 2682 |
|
|---|