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2781 lines
86 KiB
2781 lines
86 KiB
/* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
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file Copyright.txt or https://cmake.org/licensing#kwsys for details. */
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#include "kwsysPrivate.h"
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#include KWSYS_HEADER(Process.h)
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#include KWSYS_HEADER(Encoding.h)
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/* Work-around CMake dependency scanning limitation. This must
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duplicate the above list of headers. */
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#if 0
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# include "Encoding.h.in"
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# include "Process.h.in"
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#endif
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/*
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Implementation for Windows
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On windows, a thread is created to wait for data on each pipe. The
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threads are synchronized with the main thread to simulate the use of
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a UNIX-style select system call.
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*/
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#ifdef _MSC_VER
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# pragma warning(push, 1)
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#endif
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#include <windows.h> /* Windows API */
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#if defined(_MSC_VER) && _MSC_VER >= 1800
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# define KWSYS_WINDOWS_DEPRECATED_GetVersionEx
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#endif
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#include <io.h> /* _unlink */
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#include <stdio.h> /* snprintf */
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#include <string.h> /* strlen, strdup */
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#ifndef _MAX_FNAME
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# define _MAX_FNAME 4096
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#endif
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#ifndef _MAX_PATH
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# define _MAX_PATH 4096
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#endif
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#ifdef _MSC_VER
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# pragma warning(pop)
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# pragma warning(disable : 4514)
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# pragma warning(disable : 4706)
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#endif
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/* There are pipes for the process pipeline's stdout and stderr. */
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#define KWSYSPE_PIPE_COUNT 2
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#define KWSYSPE_PIPE_STDOUT 0
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#define KWSYSPE_PIPE_STDERR 1
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/* The maximum amount to read from a pipe at a time. */
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#define KWSYSPE_PIPE_BUFFER_SIZE 1024
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/* Debug output macro. */
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#if 0
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# define KWSYSPE_DEBUG(x) \
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((void*)cp == (void*)0x00226DE0 \
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? (fprintf(stderr, "%d/%p/%d ", (int)GetCurrentProcessId(), cp, \
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__LINE__), \
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fprintf x, fflush(stderr), 1) \
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: (1))
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#else
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# define KWSYSPE_DEBUG(x) (void)1
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#endif
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typedef LARGE_INTEGER kwsysProcessTime;
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typedef struct kwsysProcessCreateInformation_s
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{
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/* Windows child startup control data. */
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STARTUPINFOW StartupInfo;
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/* Original handles before making inherited duplicates. */
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HANDLE hStdInput;
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HANDLE hStdOutput;
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HANDLE hStdError;
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} kwsysProcessCreateInformation;
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typedef struct kwsysProcessPipeData_s kwsysProcessPipeData;
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static DWORD WINAPI kwsysProcessPipeThreadRead(LPVOID ptd);
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static void kwsysProcessPipeThreadReadPipe(kwsysProcess* cp,
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kwsysProcessPipeData* td);
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static DWORD WINAPI kwsysProcessPipeThreadWake(LPVOID ptd);
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static void kwsysProcessPipeThreadWakePipe(kwsysProcess* cp,
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kwsysProcessPipeData* td);
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static int kwsysProcessInitialize(kwsysProcess* cp);
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static DWORD kwsysProcessCreate(kwsysProcess* cp, int index,
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kwsysProcessCreateInformation* si);
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static void kwsysProcessDestroy(kwsysProcess* cp, int event);
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static DWORD kwsysProcessSetupOutputPipeFile(PHANDLE handle, const char* name);
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static void kwsysProcessSetupSharedPipe(DWORD nStdHandle, PHANDLE handle);
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static void kwsysProcessSetupPipeNative(HANDLE native, PHANDLE handle);
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static void kwsysProcessCleanupHandle(PHANDLE h);
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static void kwsysProcessCleanup(kwsysProcess* cp, DWORD error);
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static void kwsysProcessCleanErrorMessage(kwsysProcess* cp);
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static int kwsysProcessGetTimeoutTime(kwsysProcess* cp, double* userTimeout,
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kwsysProcessTime* timeoutTime);
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static int kwsysProcessGetTimeoutLeft(kwsysProcessTime* timeoutTime,
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double* userTimeout,
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kwsysProcessTime* timeoutLength);
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static kwsysProcessTime kwsysProcessTimeGetCurrent(void);
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static DWORD kwsysProcessTimeToDWORD(kwsysProcessTime t);
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static double kwsysProcessTimeToDouble(kwsysProcessTime t);
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static kwsysProcessTime kwsysProcessTimeFromDouble(double d);
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static int kwsysProcessTimeLess(kwsysProcessTime in1, kwsysProcessTime in2);
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static kwsysProcessTime kwsysProcessTimeAdd(kwsysProcessTime in1,
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kwsysProcessTime in2);
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static kwsysProcessTime kwsysProcessTimeSubtract(kwsysProcessTime in1,
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kwsysProcessTime in2);
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static void kwsysProcessSetExitExceptionByIndex(kwsysProcess* cp, int code,
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int idx);
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static void kwsysProcessKillTree(int pid);
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static void kwsysProcessDisablePipeThreads(kwsysProcess* cp);
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static int kwsysProcessesInitialize(void);
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static int kwsysTryEnterCreateProcessSection(void);
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static void kwsysLeaveCreateProcessSection(void);
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static int kwsysProcessesAdd(HANDLE hProcess, DWORD dwProcessId,
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int newProcessGroup);
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static void kwsysProcessesRemove(HANDLE hProcess);
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static BOOL WINAPI kwsysCtrlHandler(DWORD dwCtrlType);
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/* A structure containing synchronization data for each thread. */
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typedef struct kwsysProcessPipeSync_s kwsysProcessPipeSync;
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struct kwsysProcessPipeSync_s
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{
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/* Handle to the thread. */
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HANDLE Thread;
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/* Semaphore indicating to the thread that a process has started. */
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HANDLE Ready;
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/* Semaphore indicating to the thread that it should begin work. */
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HANDLE Go;
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/* Semaphore indicating thread has reset for another process. */
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HANDLE Reset;
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};
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/* A structure containing data for each pipe's threads. */
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struct kwsysProcessPipeData_s
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{
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/* ------------- Data managed per instance of kwsysProcess ------------- */
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/* Synchronization data for reading thread. */
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kwsysProcessPipeSync Reader;
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/* Synchronization data for waking thread. */
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kwsysProcessPipeSync Waker;
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/* Index of this pipe. */
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int Index;
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/* The kwsysProcess instance owning this pipe. */
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kwsysProcess* Process;
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/* ------------- Data managed per call to Execute ------------- */
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/* Buffer for data read in this pipe's thread. */
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char DataBuffer[KWSYSPE_PIPE_BUFFER_SIZE];
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/* The length of the data stored in the buffer. */
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DWORD DataLength;
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/* Whether the pipe has been closed. */
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int Closed;
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/* Handle for the read end of this pipe. */
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HANDLE Read;
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/* Handle for the write end of this pipe. */
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HANDLE Write;
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};
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/* A structure containing results data for each process. */
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typedef struct kwsysProcessResults_s kwsysProcessResults;
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struct kwsysProcessResults_s
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{
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/* The status of the process. */
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int State;
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/* The exceptional behavior that terminated the process, if any. */
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int ExitException;
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/* The process exit code. */
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DWORD ExitCode;
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/* The process return code, if any. */
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int ExitValue;
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/* Description for the ExitException. */
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char ExitExceptionString[KWSYSPE_PIPE_BUFFER_SIZE + 1];
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};
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/* Structure containing data used to implement the child's execution. */
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struct kwsysProcess_s
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{
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/* ------------- Data managed per instance of kwsysProcess ------------- */
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/* The status of the process structure. */
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int State;
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/* The command lines to execute. */
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wchar_t** Commands;
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int NumberOfCommands;
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/* The exit code of each command. */
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DWORD* CommandExitCodes;
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/* The working directory for the child process. */
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wchar_t* WorkingDirectory;
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/* Whether to create the child as a detached process. */
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int OptionDetach;
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/* Whether the child was created as a detached process. */
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int Detached;
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/* Whether to hide the child process's window. */
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int HideWindow;
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/* Whether to treat command lines as verbatim. */
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int Verbatim;
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/* Whether to merge stdout/stderr of the child. */
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int MergeOutput;
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/* Whether to create the process in a new process group. */
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int CreateProcessGroup;
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/* Mutex to protect the shared index used by threads to report data. */
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HANDLE SharedIndexMutex;
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/* Semaphore used by threads to signal data ready. */
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HANDLE Full;
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/* Whether we are currently deleting this kwsysProcess instance. */
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int Deleting;
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/* Data specific to each pipe and its thread. */
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kwsysProcessPipeData Pipe[KWSYSPE_PIPE_COUNT];
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/* Name of files to which stdin and stdout pipes are attached. */
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char* PipeFileSTDIN;
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char* PipeFileSTDOUT;
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char* PipeFileSTDERR;
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/* Whether each pipe is shared with the parent process. */
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int PipeSharedSTDIN;
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int PipeSharedSTDOUT;
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int PipeSharedSTDERR;
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/* Native pipes provided by the user. */
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HANDLE PipeNativeSTDIN[2];
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HANDLE PipeNativeSTDOUT[2];
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HANDLE PipeNativeSTDERR[2];
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/* ------------- Data managed per call to Execute ------------- */
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/* Index of last pipe to report data, if any. */
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int CurrentIndex;
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/* Index shared by threads to report data. */
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int SharedIndex;
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/* The timeout length. */
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double Timeout;
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/* Time at which the child started. */
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kwsysProcessTime StartTime;
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/* Time at which the child will timeout. Negative for no timeout. */
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kwsysProcessTime TimeoutTime;
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/* Flag for whether the process was killed. */
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int Killed;
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/* Flag for whether the timeout expired. */
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int TimeoutExpired;
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/* Flag for whether the process has terminated. */
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int Terminated;
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/* The number of pipes still open during execution and while waiting
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for pipes to close after process termination. */
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int PipesLeft;
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/* Buffer for error messages. */
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char ErrorMessage[KWSYSPE_PIPE_BUFFER_SIZE + 1];
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/* process results. */
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kwsysProcessResults* ProcessResults;
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/* Windows process information data. */
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PROCESS_INFORMATION* ProcessInformation;
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/* Data and process termination events for which to wait. */
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PHANDLE ProcessEvents;
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int ProcessEventsLength;
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/* Real working directory of our own process. */
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DWORD RealWorkingDirectoryLength;
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wchar_t* RealWorkingDirectory;
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/* Own handles for the child's ends of the pipes in the parent process.
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Used temporarily during process creation. */
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HANDLE PipeChildStd[3];
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};
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kwsysProcess* kwsysProcess_New(void)
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{
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int i;
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/* Process control structure. */
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kwsysProcess* cp;
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/* Windows version number data. */
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OSVERSIONINFO osv;
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/* Initialize list of processes before we get any farther. It's especially
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important that the console Ctrl handler be added BEFORE starting the
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first process. This prevents the risk of an orphaned process being
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started by the main thread while the default Ctrl handler is in
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progress. */
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if (!kwsysProcessesInitialize()) {
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return 0;
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}
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/* Allocate a process control structure. */
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cp = (kwsysProcess*)malloc(sizeof(kwsysProcess));
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if (!cp) {
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/* Could not allocate memory for the control structure. */
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return 0;
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}
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ZeroMemory(cp, sizeof(*cp));
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/* Share stdin with the parent process by default. */
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cp->PipeSharedSTDIN = 1;
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/* Set initial status. */
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cp->State = kwsysProcess_State_Starting;
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/* Choose a method of running the child based on version of
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windows. */
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ZeroMemory(&osv, sizeof(osv));
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osv.dwOSVersionInfoSize = sizeof(osv);
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#ifdef KWSYS_WINDOWS_DEPRECATED_GetVersionEx
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# pragma warning(push)
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# ifdef __INTEL_COMPILER
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# pragma warning(disable : 1478)
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# elif defined __clang__
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# pragma clang diagnostic push
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# pragma clang diagnostic ignored "-Wdeprecated-declarations"
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# else
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# pragma warning(disable : 4996)
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# endif
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#endif
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GetVersionEx(&osv);
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#ifdef KWSYS_WINDOWS_DEPRECATED_GetVersionEx
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# ifdef __clang__
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# pragma clang diagnostic pop
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# else
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# pragma warning(pop)
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# endif
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#endif
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if (osv.dwPlatformId == VER_PLATFORM_WIN32_WINDOWS) {
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/* Win9x no longer supported. */
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kwsysProcess_Delete(cp);
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return 0;
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}
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/* Initially no thread owns the mutex. Initialize semaphore to 1. */
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if (!(cp->SharedIndexMutex = CreateSemaphore(0, 1, 1, 0))) {
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kwsysProcess_Delete(cp);
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return 0;
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}
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/* Initially no data are available. Initialize semaphore to 0. */
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if (!(cp->Full = CreateSemaphore(0, 0, 1, 0))) {
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kwsysProcess_Delete(cp);
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return 0;
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}
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/* Create the thread to read each pipe. */
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for (i = 0; i < KWSYSPE_PIPE_COUNT; ++i) {
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DWORD dummy = 0;
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/* Assign the thread its index. */
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cp->Pipe[i].Index = i;
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/* Give the thread a pointer back to the kwsysProcess instance. */
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cp->Pipe[i].Process = cp;
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/* No process is yet running. Initialize semaphore to 0. */
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if (!(cp->Pipe[i].Reader.Ready = CreateSemaphore(0, 0, 1, 0))) {
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kwsysProcess_Delete(cp);
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return 0;
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}
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/* The pipe is not yet reset. Initialize semaphore to 0. */
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if (!(cp->Pipe[i].Reader.Reset = CreateSemaphore(0, 0, 1, 0))) {
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kwsysProcess_Delete(cp);
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return 0;
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}
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/* The thread's buffer is initially empty. Initialize semaphore to 1. */
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if (!(cp->Pipe[i].Reader.Go = CreateSemaphore(0, 1, 1, 0))) {
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kwsysProcess_Delete(cp);
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return 0;
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}
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/* Create the reading thread. It will block immediately. The
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thread will not make deeply nested calls, so we need only a
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small stack. */
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if (!(cp->Pipe[i].Reader.Thread = CreateThread(
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0, 1024, kwsysProcessPipeThreadRead, &cp->Pipe[i], 0, &dummy))) {
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kwsysProcess_Delete(cp);
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return 0;
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}
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/* No process is yet running. Initialize semaphore to 0. */
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if (!(cp->Pipe[i].Waker.Ready = CreateSemaphore(0, 0, 1, 0))) {
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kwsysProcess_Delete(cp);
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return 0;
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}
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/* The pipe is not yet reset. Initialize semaphore to 0. */
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if (!(cp->Pipe[i].Waker.Reset = CreateSemaphore(0, 0, 1, 0))) {
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kwsysProcess_Delete(cp);
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return 0;
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}
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/* The waker should not wake immediately. Initialize semaphore to 0. */
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if (!(cp->Pipe[i].Waker.Go = CreateSemaphore(0, 0, 1, 0))) {
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kwsysProcess_Delete(cp);
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return 0;
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}
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/* Create the waking thread. It will block immediately. The
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thread will not make deeply nested calls, so we need only a
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small stack. */
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if (!(cp->Pipe[i].Waker.Thread = CreateThread(
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0, 1024, kwsysProcessPipeThreadWake, &cp->Pipe[i], 0, &dummy))) {
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kwsysProcess_Delete(cp);
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return 0;
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}
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}
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for (i = 0; i < 3; ++i) {
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cp->PipeChildStd[i] = INVALID_HANDLE_VALUE;
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}
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return cp;
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}
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void kwsysProcess_Delete(kwsysProcess* cp)
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{
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int i;
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/* Make sure we have an instance. */
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if (!cp) {
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return;
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}
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|
/* If the process is executing, wait for it to finish. */
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if (cp->State == kwsysProcess_State_Executing) {
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if (cp->Detached) {
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kwsysProcess_Disown(cp);
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} else {
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kwsysProcess_WaitForExit(cp, 0);
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}
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}
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|
/* We are deleting the kwsysProcess instance. */
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cp->Deleting = 1;
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/* Terminate each of the threads. */
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for (i = 0; i < KWSYSPE_PIPE_COUNT; ++i) {
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|
/* Terminate this reading thread. */
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|
if (cp->Pipe[i].Reader.Thread) {
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|
/* Signal the thread we are ready for it. It will terminate
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|
immediately since Deleting is set. */
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ReleaseSemaphore(cp->Pipe[i].Reader.Ready, 1, 0);
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|
/* Wait for the thread to exit. */
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|
WaitForSingleObject(cp->Pipe[i].Reader.Thread, INFINITE);
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/* Close the handle to the thread. */
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|
kwsysProcessCleanupHandle(&cp->Pipe[i].Reader.Thread);
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}
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/* Terminate this waking thread. */
|
|
if (cp->Pipe[i].Waker.Thread) {
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|
/* Signal the thread we are ready for it. It will terminate
|
|
immediately since Deleting is set. */
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ReleaseSemaphore(cp->Pipe[i].Waker.Ready, 1, 0);
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/* Wait for the thread to exit. */
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WaitForSingleObject(cp->Pipe[i].Waker.Thread, INFINITE);
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/* Close the handle to the thread. */
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kwsysProcessCleanupHandle(&cp->Pipe[i].Waker.Thread);
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}
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|
/* Cleanup the pipe's semaphores. */
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kwsysProcessCleanupHandle(&cp->Pipe[i].Reader.Ready);
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kwsysProcessCleanupHandle(&cp->Pipe[i].Reader.Go);
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kwsysProcessCleanupHandle(&cp->Pipe[i].Reader.Reset);
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kwsysProcessCleanupHandle(&cp->Pipe[i].Waker.Ready);
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kwsysProcessCleanupHandle(&cp->Pipe[i].Waker.Go);
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kwsysProcessCleanupHandle(&cp->Pipe[i].Waker.Reset);
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}
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|
/* Close the shared semaphores. */
|
|
kwsysProcessCleanupHandle(&cp->SharedIndexMutex);
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|
kwsysProcessCleanupHandle(&cp->Full);
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|
|
|
/* Free memory. */
|
|
kwsysProcess_SetCommand(cp, 0);
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|
kwsysProcess_SetWorkingDirectory(cp, 0);
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|
kwsysProcess_SetPipeFile(cp, kwsysProcess_Pipe_STDIN, 0);
|
|
kwsysProcess_SetPipeFile(cp, kwsysProcess_Pipe_STDOUT, 0);
|
|
kwsysProcess_SetPipeFile(cp, kwsysProcess_Pipe_STDERR, 0);
|
|
free(cp->CommandExitCodes);
|
|
free(cp->ProcessResults);
|
|
free(cp);
|
|
}
|
|
|
|
int kwsysProcess_SetCommand(kwsysProcess* cp, char const* const* command)
|
|
{
|
|
int i;
|
|
if (!cp) {
|
|
return 0;
|
|
}
|
|
for (i = 0; i < cp->NumberOfCommands; ++i) {
|
|
free(cp->Commands[i]);
|
|
}
|
|
cp->NumberOfCommands = 0;
|
|
if (cp->Commands) {
|
|
free(cp->Commands);
|
|
cp->Commands = 0;
|
|
}
|
|
if (command) {
|
|
return kwsysProcess_AddCommand(cp, command);
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
int kwsysProcess_AddCommand(kwsysProcess* cp, char const* const* command)
|
|
{
|
|
int newNumberOfCommands;
|
|
wchar_t** newCommands;
|
|
|
|
/* Make sure we have a command to add. */
|
|
if (!cp || !command || !*command) {
|
|
return 0;
|
|
}
|
|
|
|
/* Allocate a new array for command pointers. */
|
|
newNumberOfCommands = cp->NumberOfCommands + 1;
|
|
if (!(newCommands =
|
|
(wchar_t**)malloc(sizeof(wchar_t*) * newNumberOfCommands))) {
|
|
/* Out of memory. */
|
|
return 0;
|
|
}
|
|
|
|
/* Copy any existing commands into the new array. */
|
|
{
|
|
int i;
|
|
for (i = 0; i < cp->NumberOfCommands; ++i) {
|
|
newCommands[i] = cp->Commands[i];
|
|
}
|
|
}
|
|
|
|
if (cp->Verbatim) {
|
|
/* Copy the verbatim command line into the buffer. */
|
|
newCommands[cp->NumberOfCommands] = kwsysEncoding_DupToWide(*command);
|
|
} else {
|
|
/* Encode the arguments so CommandLineToArgvW can decode
|
|
them from the command line string in the child. */
|
|
char buffer[32768]; /* CreateProcess max command-line length. */
|
|
char* end = buffer + sizeof(buffer);
|
|
char* out = buffer;
|
|
char const* const* a;
|
|
for (a = command; *a; ++a) {
|
|
int quote = !**a; /* Quote the empty string. */
|
|
int slashes = 0;
|
|
char const* c;
|
|
if (a != command && out != end) {
|
|
*out++ = ' ';
|
|
}
|
|
for (c = *a; !quote && *c; ++c) {
|
|
quote = (*c == ' ' || *c == '\t');
|
|
}
|
|
if (quote && out != end) {
|
|
*out++ = '"';
|
|
}
|
|
for (c = *a; *c; ++c) {
|
|
if (*c == '\\') {
|
|
++slashes;
|
|
} else {
|
|
if (*c == '"') {
|
|
// Add n+1 backslashes to total 2n+1 before internal '"'.
|
|
while (slashes-- >= 0 && out != end) {
|
|
*out++ = '\\';
|
|
}
|
|
}
|
|
slashes = 0;
|
|
}
|
|
if (out != end) {
|
|
*out++ = *c;
|
|
}
|
|
}
|
|
if (quote) {
|
|
// Add n backslashes to total 2n before ending '"'.
|
|
while (slashes-- > 0 && out != end) {
|
|
*out++ = '\\';
|
|
}
|
|
if (out != end) {
|
|
*out++ = '"';
|
|
}
|
|
}
|
|
}
|
|
if (out != end) {
|
|
*out = '\0';
|
|
newCommands[cp->NumberOfCommands] = kwsysEncoding_DupToWide(buffer);
|
|
} else {
|
|
newCommands[cp->NumberOfCommands] = 0;
|
|
}
|
|
}
|
|
if (!newCommands[cp->NumberOfCommands]) {
|
|
/* Out of memory or command line too long. */
|
|
free(newCommands);
|
|
return 0;
|
|
}
|
|
|
|
/* Save the new array of commands. */
|
|
free(cp->Commands);
|
|
cp->Commands = newCommands;
|
|
cp->NumberOfCommands = newNumberOfCommands;
|
|
return 1;
|
|
}
|
|
|
|
void kwsysProcess_SetTimeout(kwsysProcess* cp, double timeout)
|
|
{
|
|
if (!cp) {
|
|
return;
|
|
}
|
|
cp->Timeout = timeout;
|
|
if (cp->Timeout < 0) {
|
|
cp->Timeout = 0;
|
|
}
|
|
// Force recomputation of TimeoutTime.
|
|
cp->TimeoutTime.QuadPart = -1;
|
|
}
|
|
|
|
int kwsysProcess_SetWorkingDirectory(kwsysProcess* cp, const char* dir)
|
|
{
|
|
if (!cp) {
|
|
return 0;
|
|
}
|
|
if (cp->WorkingDirectory) {
|
|
free(cp->WorkingDirectory);
|
|
cp->WorkingDirectory = 0;
|
|
}
|
|
if (dir && dir[0]) {
|
|
wchar_t* wdir = kwsysEncoding_DupToWide(dir);
|
|
/* We must convert the working directory to a full path. */
|
|
DWORD length = GetFullPathNameW(wdir, 0, 0, 0);
|
|
if (length > 0) {
|
|
wchar_t* work_dir = malloc(length * sizeof(wchar_t));
|
|
if (!work_dir) {
|
|
free(wdir);
|
|
return 0;
|
|
}
|
|
if (!GetFullPathNameW(wdir, length, work_dir, 0)) {
|
|
free(work_dir);
|
|
free(wdir);
|
|
return 0;
|
|
}
|
|
cp->WorkingDirectory = work_dir;
|
|
}
|
|
free(wdir);
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
int kwsysProcess_SetPipeFile(kwsysProcess* cp, int pipe, const char* file)
|
|
{
|
|
char** pfile;
|
|
if (!cp) {
|
|
return 0;
|
|
}
|
|
switch (pipe) {
|
|
case kwsysProcess_Pipe_STDIN:
|
|
pfile = &cp->PipeFileSTDIN;
|
|
break;
|
|
case kwsysProcess_Pipe_STDOUT:
|
|
pfile = &cp->PipeFileSTDOUT;
|
|
break;
|
|
case kwsysProcess_Pipe_STDERR:
|
|
pfile = &cp->PipeFileSTDERR;
|
|
break;
|
|
default:
|
|
return 0;
|
|
}
|
|
if (*pfile) {
|
|
free(*pfile);
|
|
*pfile = 0;
|
|
}
|
|
if (file) {
|
|
*pfile = strdup(file);
|
|
if (!*pfile) {
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
/* If we are redirecting the pipe, do not share it or use a native
|
|
pipe. */
|
|
if (*pfile) {
|
|
kwsysProcess_SetPipeNative(cp, pipe, 0);
|
|
kwsysProcess_SetPipeShared(cp, pipe, 0);
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
void kwsysProcess_SetPipeShared(kwsysProcess* cp, int pipe, int shared)
|
|
{
|
|
if (!cp) {
|
|
return;
|
|
}
|
|
|
|
switch (pipe) {
|
|
case kwsysProcess_Pipe_STDIN:
|
|
cp->PipeSharedSTDIN = shared ? 1 : 0;
|
|
break;
|
|
case kwsysProcess_Pipe_STDOUT:
|
|
cp->PipeSharedSTDOUT = shared ? 1 : 0;
|
|
break;
|
|
case kwsysProcess_Pipe_STDERR:
|
|
cp->PipeSharedSTDERR = shared ? 1 : 0;
|
|
break;
|
|
default:
|
|
return;
|
|
}
|
|
|
|
/* If we are sharing the pipe, do not redirect it to a file or use a
|
|
native pipe. */
|
|
if (shared) {
|
|
kwsysProcess_SetPipeFile(cp, pipe, 0);
|
|
kwsysProcess_SetPipeNative(cp, pipe, 0);
|
|
}
|
|
}
|
|
|
|
void kwsysProcess_SetPipeNative(kwsysProcess* cp, int pipe, const HANDLE p[2])
|
|
{
|
|
HANDLE* pPipeNative = 0;
|
|
|
|
if (!cp) {
|
|
return;
|
|
}
|
|
|
|
switch (pipe) {
|
|
case kwsysProcess_Pipe_STDIN:
|
|
pPipeNative = cp->PipeNativeSTDIN;
|
|
break;
|
|
case kwsysProcess_Pipe_STDOUT:
|
|
pPipeNative = cp->PipeNativeSTDOUT;
|
|
break;
|
|
case kwsysProcess_Pipe_STDERR:
|
|
pPipeNative = cp->PipeNativeSTDERR;
|
|
break;
|
|
default:
|
|
return;
|
|
}
|
|
|
|
/* Copy the native pipe handles provided. */
|
|
if (p) {
|
|
pPipeNative[0] = p[0];
|
|
pPipeNative[1] = p[1];
|
|
} else {
|
|
pPipeNative[0] = 0;
|
|
pPipeNative[1] = 0;
|
|
}
|
|
|
|
/* If we are using a native pipe, do not share it or redirect it to
|
|
a file. */
|
|
if (p) {
|
|
kwsysProcess_SetPipeFile(cp, pipe, 0);
|
|
kwsysProcess_SetPipeShared(cp, pipe, 0);
|
|
}
|
|
}
|
|
|
|
int kwsysProcess_GetOption(kwsysProcess* cp, int optionId)
|
|
{
|
|
if (!cp) {
|
|
return 0;
|
|
}
|
|
|
|
switch (optionId) {
|
|
case kwsysProcess_Option_Detach:
|
|
return cp->OptionDetach;
|
|
case kwsysProcess_Option_HideWindow:
|
|
return cp->HideWindow;
|
|
case kwsysProcess_Option_MergeOutput:
|
|
return cp->MergeOutput;
|
|
case kwsysProcess_Option_Verbatim:
|
|
return cp->Verbatim;
|
|
case kwsysProcess_Option_CreateProcessGroup:
|
|
return cp->CreateProcessGroup;
|
|
default:
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
void kwsysProcess_SetOption(kwsysProcess* cp, int optionId, int value)
|
|
{
|
|
if (!cp) {
|
|
return;
|
|
}
|
|
|
|
switch (optionId) {
|
|
case kwsysProcess_Option_Detach:
|
|
cp->OptionDetach = value;
|
|
break;
|
|
case kwsysProcess_Option_HideWindow:
|
|
cp->HideWindow = value;
|
|
break;
|
|
case kwsysProcess_Option_MergeOutput:
|
|
cp->MergeOutput = value;
|
|
break;
|
|
case kwsysProcess_Option_Verbatim:
|
|
cp->Verbatim = value;
|
|
break;
|
|
case kwsysProcess_Option_CreateProcessGroup:
|
|
cp->CreateProcessGroup = value;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
int kwsysProcess_GetState(kwsysProcess* cp)
|
|
{
|
|
return cp ? cp->State : kwsysProcess_State_Error;
|
|
}
|
|
|
|
int kwsysProcess_GetExitException(kwsysProcess* cp)
|
|
{
|
|
return (cp && cp->ProcessResults && (cp->NumberOfCommands > 0))
|
|
? cp->ProcessResults[cp->NumberOfCommands - 1].ExitException
|
|
: kwsysProcess_Exception_Other;
|
|
}
|
|
|
|
int kwsysProcess_GetExitValue(kwsysProcess* cp)
|
|
{
|
|
return (cp && cp->ProcessResults && (cp->NumberOfCommands > 0))
|
|
? cp->ProcessResults[cp->NumberOfCommands - 1].ExitValue
|
|
: -1;
|
|
}
|
|
|
|
int kwsysProcess_GetExitCode(kwsysProcess* cp)
|
|
{
|
|
return (cp && cp->ProcessResults && (cp->NumberOfCommands > 0))
|
|
? cp->ProcessResults[cp->NumberOfCommands - 1].ExitCode
|
|
: 0;
|
|
}
|
|
|
|
const char* kwsysProcess_GetErrorString(kwsysProcess* cp)
|
|
{
|
|
if (!cp) {
|
|
return "Process management structure could not be allocated";
|
|
} else if (cp->State == kwsysProcess_State_Error) {
|
|
return cp->ErrorMessage;
|
|
}
|
|
return "Success";
|
|
}
|
|
|
|
const char* kwsysProcess_GetExceptionString(kwsysProcess* cp)
|
|
{
|
|
if (!(cp && cp->ProcessResults && (cp->NumberOfCommands > 0))) {
|
|
return "GetExceptionString called with NULL process management structure";
|
|
} else if (cp->State == kwsysProcess_State_Exception) {
|
|
return cp->ProcessResults[cp->NumberOfCommands - 1].ExitExceptionString;
|
|
}
|
|
return "No exception";
|
|
}
|
|
|
|
/* the index should be in array bound. */
|
|
#define KWSYSPE_IDX_CHK(RET) \
|
|
if (!cp || idx >= cp->NumberOfCommands || idx < 0) { \
|
|
KWSYSPE_DEBUG((stderr, "array index out of bound\n")); \
|
|
return RET; \
|
|
}
|
|
|
|
int kwsysProcess_GetStateByIndex(kwsysProcess* cp, int idx)
|
|
{
|
|
KWSYSPE_IDX_CHK(kwsysProcess_State_Error)
|
|
return cp->ProcessResults[idx].State;
|
|
}
|
|
|
|
int kwsysProcess_GetExitExceptionByIndex(kwsysProcess* cp, int idx)
|
|
{
|
|
KWSYSPE_IDX_CHK(kwsysProcess_Exception_Other)
|
|
return cp->ProcessResults[idx].ExitException;
|
|
}
|
|
|
|
int kwsysProcess_GetExitValueByIndex(kwsysProcess* cp, int idx)
|
|
{
|
|
KWSYSPE_IDX_CHK(-1)
|
|
return cp->ProcessResults[idx].ExitValue;
|
|
}
|
|
|
|
int kwsysProcess_GetExitCodeByIndex(kwsysProcess* cp, int idx)
|
|
{
|
|
KWSYSPE_IDX_CHK(-1)
|
|
return cp->CommandExitCodes[idx];
|
|
}
|
|
|
|
const char* kwsysProcess_GetExceptionStringByIndex(kwsysProcess* cp, int idx)
|
|
{
|
|
KWSYSPE_IDX_CHK("GetExceptionString called with NULL process management "
|
|
"structure or index out of bound")
|
|
if (cp->ProcessResults[idx].State == kwsysProcess_StateByIndex_Exception) {
|
|
return cp->ProcessResults[idx].ExitExceptionString;
|
|
}
|
|
return "No exception";
|
|
}
|
|
|
|
#undef KWSYSPE_IDX_CHK
|
|
|
|
void kwsysProcess_Execute(kwsysProcess* cp)
|
|
{
|
|
int i;
|
|
|
|
/* Do not execute a second time. */
|
|
if (!cp || cp->State == kwsysProcess_State_Executing) {
|
|
return;
|
|
}
|
|
|
|
/* Make sure we have something to run. */
|
|
if (cp->NumberOfCommands < 1) {
|
|
strcpy(cp->ErrorMessage, "No command");
|
|
cp->State = kwsysProcess_State_Error;
|
|
return;
|
|
}
|
|
|
|
/* Initialize the control structure for a new process. */
|
|
if (!kwsysProcessInitialize(cp)) {
|
|
strcpy(cp->ErrorMessage, "Out of memory");
|
|
cp->State = kwsysProcess_State_Error;
|
|
return;
|
|
}
|
|
|
|
/* Save the real working directory of this process and change to
|
|
the working directory for the child processes. This is needed
|
|
to make pipe file paths evaluate correctly. */
|
|
if (cp->WorkingDirectory) {
|
|
if (!GetCurrentDirectoryW(cp->RealWorkingDirectoryLength,
|
|
cp->RealWorkingDirectory)) {
|
|
kwsysProcessCleanup(cp, GetLastError());
|
|
return;
|
|
}
|
|
if (!SetCurrentDirectoryW(cp->WorkingDirectory)) {
|
|
kwsysProcessCleanup(cp, GetLastError());
|
|
return;
|
|
}
|
|
}
|
|
|
|
/* Setup the stdin pipe for the first process. */
|
|
if (cp->PipeFileSTDIN) {
|
|
/* Create a handle to read a file for stdin. */
|
|
wchar_t* wstdin = kwsysEncoding_DupToWide(cp->PipeFileSTDIN);
|
|
DWORD error;
|
|
cp->PipeChildStd[0] =
|
|
CreateFileW(wstdin, GENERIC_READ, FILE_SHARE_READ | FILE_SHARE_WRITE, 0,
|
|
OPEN_EXISTING, 0, 0);
|
|
error = GetLastError(); /* Check now in case free changes this. */
|
|
free(wstdin);
|
|
if (cp->PipeChildStd[0] == INVALID_HANDLE_VALUE) {
|
|
kwsysProcessCleanup(cp, error);
|
|
return;
|
|
}
|
|
} else if (cp->PipeSharedSTDIN) {
|
|
/* Share this process's stdin with the child. */
|
|
kwsysProcessSetupSharedPipe(STD_INPUT_HANDLE, &cp->PipeChildStd[0]);
|
|
} else if (cp->PipeNativeSTDIN[0]) {
|
|
/* Use the provided native pipe. */
|
|
kwsysProcessSetupPipeNative(cp->PipeNativeSTDIN[0], &cp->PipeChildStd[0]);
|
|
} else {
|
|
/* Explicitly give the child no stdin. */
|
|
cp->PipeChildStd[0] = INVALID_HANDLE_VALUE;
|
|
}
|
|
|
|
/* Create the output pipe for the last process.
|
|
We always create this so the pipe thread can run even if we
|
|
do not end up giving the write end to the child below. */
|
|
if (!CreatePipe(&cp->Pipe[KWSYSPE_PIPE_STDOUT].Read,
|
|
&cp->Pipe[KWSYSPE_PIPE_STDOUT].Write, 0, 0)) {
|
|
kwsysProcessCleanup(cp, GetLastError());
|
|
return;
|
|
}
|
|
|
|
if (cp->PipeFileSTDOUT) {
|
|
/* Use a file for stdout. */
|
|
DWORD error = kwsysProcessSetupOutputPipeFile(&cp->PipeChildStd[1],
|
|
cp->PipeFileSTDOUT);
|
|
if (error) {
|
|
kwsysProcessCleanup(cp, error);
|
|
return;
|
|
}
|
|
} else if (cp->PipeSharedSTDOUT) {
|
|
/* Use the parent stdout. */
|
|
kwsysProcessSetupSharedPipe(STD_OUTPUT_HANDLE, &cp->PipeChildStd[1]);
|
|
} else if (cp->PipeNativeSTDOUT[1]) {
|
|
/* Use the given handle for stdout. */
|
|
kwsysProcessSetupPipeNative(cp->PipeNativeSTDOUT[1], &cp->PipeChildStd[1]);
|
|
} else {
|
|
/* Use our pipe for stdout. Duplicate the handle since our waker
|
|
thread will use the original. Do not make it inherited yet. */
|
|
if (!DuplicateHandle(GetCurrentProcess(),
|
|
cp->Pipe[KWSYSPE_PIPE_STDOUT].Write,
|
|
GetCurrentProcess(), &cp->PipeChildStd[1], 0, FALSE,
|
|
DUPLICATE_SAME_ACCESS)) {
|
|
kwsysProcessCleanup(cp, GetLastError());
|
|
return;
|
|
}
|
|
}
|
|
|
|
/* Create stderr pipe to be shared by all processes in the pipeline.
|
|
We always create this so the pipe thread can run even if we do not
|
|
end up giving the write end to the child below. */
|
|
if (!CreatePipe(&cp->Pipe[KWSYSPE_PIPE_STDERR].Read,
|
|
&cp->Pipe[KWSYSPE_PIPE_STDERR].Write, 0, 0)) {
|
|
kwsysProcessCleanup(cp, GetLastError());
|
|
return;
|
|
}
|
|
|
|
if (cp->PipeFileSTDERR) {
|
|
/* Use a file for stderr. */
|
|
DWORD error = kwsysProcessSetupOutputPipeFile(&cp->PipeChildStd[2],
|
|
cp->PipeFileSTDERR);
|
|
if (error) {
|
|
kwsysProcessCleanup(cp, error);
|
|
return;
|
|
}
|
|
} else if (cp->PipeSharedSTDERR) {
|
|
/* Use the parent stderr. */
|
|
kwsysProcessSetupSharedPipe(STD_ERROR_HANDLE, &cp->PipeChildStd[2]);
|
|
} else if (cp->PipeNativeSTDERR[1]) {
|
|
/* Use the given handle for stderr. */
|
|
kwsysProcessSetupPipeNative(cp->PipeNativeSTDERR[1], &cp->PipeChildStd[2]);
|
|
} else {
|
|
/* Use our pipe for stderr. Duplicate the handle since our waker
|
|
thread will use the original. Do not make it inherited yet. */
|
|
if (!DuplicateHandle(GetCurrentProcess(),
|
|
cp->Pipe[KWSYSPE_PIPE_STDERR].Write,
|
|
GetCurrentProcess(), &cp->PipeChildStd[2], 0, FALSE,
|
|
DUPLICATE_SAME_ACCESS)) {
|
|
kwsysProcessCleanup(cp, GetLastError());
|
|
return;
|
|
}
|
|
}
|
|
|
|
/* Create the pipeline of processes. */
|
|
{
|
|
/* Child startup control data. */
|
|
kwsysProcessCreateInformation si;
|
|
HANDLE nextStdInput = cp->PipeChildStd[0];
|
|
|
|
/* Initialize startup info data. */
|
|
ZeroMemory(&si, sizeof(si));
|
|
si.StartupInfo.cb = sizeof(si.StartupInfo);
|
|
|
|
/* Decide whether a child window should be shown. */
|
|
si.StartupInfo.dwFlags |= STARTF_USESHOWWINDOW;
|
|
si.StartupInfo.wShowWindow =
|
|
(unsigned short)(cp->HideWindow ? SW_HIDE : SW_SHOWDEFAULT);
|
|
|
|
/* Connect the child's output pipes to the threads. */
|
|
si.StartupInfo.dwFlags |= STARTF_USESTDHANDLES;
|
|
|
|
for (i = 0; i < cp->NumberOfCommands; ++i) {
|
|
/* Setup the process's pipes. */
|
|
si.hStdInput = nextStdInput;
|
|
if (i == cp->NumberOfCommands - 1) {
|
|
/* The last child gets the overall stdout. */
|
|
nextStdInput = INVALID_HANDLE_VALUE;
|
|
si.hStdOutput = cp->PipeChildStd[1];
|
|
} else {
|
|
/* Create a pipe to sit between the children. */
|
|
HANDLE p[2] = { INVALID_HANDLE_VALUE, INVALID_HANDLE_VALUE };
|
|
if (!CreatePipe(&p[0], &p[1], 0, 0)) {
|
|
DWORD error = GetLastError();
|
|
if (nextStdInput != cp->PipeChildStd[0]) {
|
|
kwsysProcessCleanupHandle(&nextStdInput);
|
|
}
|
|
kwsysProcessCleanup(cp, error);
|
|
return;
|
|
}
|
|
nextStdInput = p[0];
|
|
si.hStdOutput = p[1];
|
|
}
|
|
si.hStdError =
|
|
cp->MergeOutput ? cp->PipeChildStd[1] : cp->PipeChildStd[2];
|
|
|
|
{
|
|
DWORD error = kwsysProcessCreate(cp, i, &si);
|
|
|
|
/* Close our copies of pipes used between children. */
|
|
if (si.hStdInput != cp->PipeChildStd[0]) {
|
|
kwsysProcessCleanupHandle(&si.hStdInput);
|
|
}
|
|
if (si.hStdOutput != cp->PipeChildStd[1]) {
|
|
kwsysProcessCleanupHandle(&si.hStdOutput);
|
|
}
|
|
if (si.hStdError != cp->PipeChildStd[2] && !cp->MergeOutput) {
|
|
kwsysProcessCleanupHandle(&si.hStdError);
|
|
}
|
|
if (!error) {
|
|
cp->ProcessEvents[i + 1] = cp->ProcessInformation[i].hProcess;
|
|
} else {
|
|
if (nextStdInput != cp->PipeChildStd[0]) {
|
|
kwsysProcessCleanupHandle(&nextStdInput);
|
|
}
|
|
kwsysProcessCleanup(cp, error);
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/* The parent process does not need the child's pipe ends. */
|
|
for (i = 0; i < 3; ++i) {
|
|
kwsysProcessCleanupHandle(&cp->PipeChildStd[i]);
|
|
}
|
|
|
|
/* Restore the working directory. */
|
|
if (cp->RealWorkingDirectory) {
|
|
SetCurrentDirectoryW(cp->RealWorkingDirectory);
|
|
free(cp->RealWorkingDirectory);
|
|
cp->RealWorkingDirectory = 0;
|
|
}
|
|
|
|
/* The timeout period starts now. */
|
|
cp->StartTime = kwsysProcessTimeGetCurrent();
|
|
cp->TimeoutTime = kwsysProcessTimeFromDouble(-1);
|
|
|
|
/* All processes in the pipeline have been started in suspended
|
|
mode. Resume them all now. */
|
|
for (i = 0; i < cp->NumberOfCommands; ++i) {
|
|
ResumeThread(cp->ProcessInformation[i].hThread);
|
|
}
|
|
|
|
/* ---- It is no longer safe to call kwsysProcessCleanup. ----- */
|
|
/* Tell the pipe threads that a process has started. */
|
|
for (i = 0; i < KWSYSPE_PIPE_COUNT; ++i) {
|
|
ReleaseSemaphore(cp->Pipe[i].Reader.Ready, 1, 0);
|
|
ReleaseSemaphore(cp->Pipe[i].Waker.Ready, 1, 0);
|
|
}
|
|
|
|
/* We don't care about the children's main threads. */
|
|
for (i = 0; i < cp->NumberOfCommands; ++i) {
|
|
kwsysProcessCleanupHandle(&cp->ProcessInformation[i].hThread);
|
|
}
|
|
|
|
/* No pipe has reported data. */
|
|
cp->CurrentIndex = KWSYSPE_PIPE_COUNT;
|
|
cp->PipesLeft = KWSYSPE_PIPE_COUNT;
|
|
|
|
/* The process has now started. */
|
|
cp->State = kwsysProcess_State_Executing;
|
|
cp->Detached = cp->OptionDetach;
|
|
}
|
|
|
|
void kwsysProcess_Disown(kwsysProcess* cp)
|
|
{
|
|
int i;
|
|
|
|
/* Make sure we are executing a detached process. */
|
|
if (!cp || !cp->Detached || cp->State != kwsysProcess_State_Executing ||
|
|
cp->TimeoutExpired || cp->Killed || cp->Terminated) {
|
|
return;
|
|
}
|
|
|
|
/* Disable the reading threads. */
|
|
kwsysProcessDisablePipeThreads(cp);
|
|
|
|
/* Wait for all pipe threads to reset. */
|
|
for (i = 0; i < KWSYSPE_PIPE_COUNT; ++i) {
|
|
WaitForSingleObject(cp->Pipe[i].Reader.Reset, INFINITE);
|
|
WaitForSingleObject(cp->Pipe[i].Waker.Reset, INFINITE);
|
|
}
|
|
|
|
/* We will not wait for exit, so cleanup now. */
|
|
kwsysProcessCleanup(cp, 0);
|
|
|
|
/* The process has been disowned. */
|
|
cp->State = kwsysProcess_State_Disowned;
|
|
}
|
|
|
|
int kwsysProcess_WaitForData(kwsysProcess* cp, char** data, int* length,
|
|
double* userTimeout)
|
|
{
|
|
kwsysProcessTime userStartTime;
|
|
kwsysProcessTime timeoutLength;
|
|
kwsysProcessTime timeoutTime;
|
|
DWORD timeout;
|
|
int user;
|
|
int done = 0;
|
|
int expired = 0;
|
|
int pipeId = kwsysProcess_Pipe_None;
|
|
DWORD w;
|
|
|
|
/* Make sure we are executing a process. */
|
|
if (!cp || cp->State != kwsysProcess_State_Executing || cp->Killed ||
|
|
cp->TimeoutExpired) {
|
|
return kwsysProcess_Pipe_None;
|
|
}
|
|
|
|
/* Record the time at which user timeout period starts. */
|
|
userStartTime = kwsysProcessTimeGetCurrent();
|
|
|
|
/* Calculate the time at which a timeout will expire, and whether it
|
|
is the user or process timeout. */
|
|
user = kwsysProcessGetTimeoutTime(cp, userTimeout, &timeoutTime);
|
|
|
|
/* Loop until we have a reason to return. */
|
|
while (!done && cp->PipesLeft > 0) {
|
|
/* If we previously got data from a thread, let it know we are
|
|
done with the data. */
|
|
if (cp->CurrentIndex < KWSYSPE_PIPE_COUNT) {
|
|
KWSYSPE_DEBUG((stderr, "releasing reader %d\n", cp->CurrentIndex));
|
|
ReleaseSemaphore(cp->Pipe[cp->CurrentIndex].Reader.Go, 1, 0);
|
|
cp->CurrentIndex = KWSYSPE_PIPE_COUNT;
|
|
}
|
|
|
|
/* Setup a timeout if required. */
|
|
if (kwsysProcessGetTimeoutLeft(&timeoutTime, user ? userTimeout : 0,
|
|
&timeoutLength)) {
|
|
/* Timeout has already expired. */
|
|
expired = 1;
|
|
break;
|
|
}
|
|
if (timeoutTime.QuadPart < 0) {
|
|
timeout = INFINITE;
|
|
} else {
|
|
timeout = kwsysProcessTimeToDWORD(timeoutLength);
|
|
}
|
|
|
|
/* Wait for a pipe's thread to signal or a process to terminate. */
|
|
w = WaitForMultipleObjects(cp->ProcessEventsLength, cp->ProcessEvents, 0,
|
|
timeout);
|
|
if (w == WAIT_TIMEOUT) {
|
|
/* Timeout has expired. */
|
|
expired = 1;
|
|
done = 1;
|
|
} else if (w == WAIT_OBJECT_0) {
|
|
/* Save the index of the reporting thread and release the mutex.
|
|
The thread will block until we signal its Empty mutex. */
|
|
cp->CurrentIndex = cp->SharedIndex;
|
|
ReleaseSemaphore(cp->SharedIndexMutex, 1, 0);
|
|
|
|
/* Data are available or a pipe closed. */
|
|
if (cp->Pipe[cp->CurrentIndex].Closed) {
|
|
/* The pipe closed at the write end. Close the read end and
|
|
inform the wakeup thread it is done with this process. */
|
|
kwsysProcessCleanupHandle(&cp->Pipe[cp->CurrentIndex].Read);
|
|
ReleaseSemaphore(cp->Pipe[cp->CurrentIndex].Waker.Go, 1, 0);
|
|
KWSYSPE_DEBUG((stderr, "wakeup %d\n", cp->CurrentIndex));
|
|
--cp->PipesLeft;
|
|
} else if (data && length) {
|
|
/* Report this data. */
|
|
*data = cp->Pipe[cp->CurrentIndex].DataBuffer;
|
|
*length = cp->Pipe[cp->CurrentIndex].DataLength;
|
|
switch (cp->CurrentIndex) {
|
|
case KWSYSPE_PIPE_STDOUT:
|
|
pipeId = kwsysProcess_Pipe_STDOUT;
|
|
break;
|
|
case KWSYSPE_PIPE_STDERR:
|
|
pipeId = kwsysProcess_Pipe_STDERR;
|
|
break;
|
|
}
|
|
done = 1;
|
|
}
|
|
} else {
|
|
/* A process has terminated. */
|
|
kwsysProcessDestroy(cp, w - WAIT_OBJECT_0);
|
|
}
|
|
}
|
|
|
|
/* Update the user timeout. */
|
|
if (userTimeout) {
|
|
kwsysProcessTime userEndTime = kwsysProcessTimeGetCurrent();
|
|
kwsysProcessTime difference =
|
|
kwsysProcessTimeSubtract(userEndTime, userStartTime);
|
|
double d = kwsysProcessTimeToDouble(difference);
|
|
*userTimeout -= d;
|
|
if (*userTimeout < 0) {
|
|
*userTimeout = 0;
|
|
}
|
|
}
|
|
|
|
/* Check what happened. */
|
|
if (pipeId) {
|
|
/* Data are ready on a pipe. */
|
|
return pipeId;
|
|
} else if (expired) {
|
|
/* A timeout has expired. */
|
|
if (user) {
|
|
/* The user timeout has expired. It has no time left. */
|
|
return kwsysProcess_Pipe_Timeout;
|
|
} else {
|
|
/* The process timeout has expired. Kill the child now. */
|
|
KWSYSPE_DEBUG((stderr, "killing child because timeout expired\n"));
|
|
kwsysProcess_Kill(cp);
|
|
cp->TimeoutExpired = 1;
|
|
cp->Killed = 0;
|
|
return kwsysProcess_Pipe_None;
|
|
}
|
|
} else {
|
|
/* The children have terminated and no more data are available. */
|
|
return kwsysProcess_Pipe_None;
|
|
}
|
|
}
|
|
|
|
int kwsysProcess_WaitForExit(kwsysProcess* cp, double* userTimeout)
|
|
{
|
|
int i;
|
|
int pipe;
|
|
|
|
/* Make sure we are executing a process. */
|
|
if (!cp || cp->State != kwsysProcess_State_Executing) {
|
|
return 1;
|
|
}
|
|
|
|
/* Wait for the process to terminate. Ignore all data. */
|
|
while ((pipe = kwsysProcess_WaitForData(cp, 0, 0, userTimeout)) > 0) {
|
|
if (pipe == kwsysProcess_Pipe_Timeout) {
|
|
/* The user timeout has expired. */
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
KWSYSPE_DEBUG((stderr, "no more data\n"));
|
|
|
|
/* When the last pipe closes in WaitForData, the loop terminates
|
|
without releasing the pipe's thread. Release it now. */
|
|
if (cp->CurrentIndex < KWSYSPE_PIPE_COUNT) {
|
|
KWSYSPE_DEBUG((stderr, "releasing reader %d\n", cp->CurrentIndex));
|
|
ReleaseSemaphore(cp->Pipe[cp->CurrentIndex].Reader.Go, 1, 0);
|
|
cp->CurrentIndex = KWSYSPE_PIPE_COUNT;
|
|
}
|
|
|
|
/* Wait for all pipe threads to reset. */
|
|
for (i = 0; i < KWSYSPE_PIPE_COUNT; ++i) {
|
|
KWSYSPE_DEBUG((stderr, "waiting reader reset %d\n", i));
|
|
WaitForSingleObject(cp->Pipe[i].Reader.Reset, INFINITE);
|
|
KWSYSPE_DEBUG((stderr, "waiting waker reset %d\n", i));
|
|
WaitForSingleObject(cp->Pipe[i].Waker.Reset, INFINITE);
|
|
}
|
|
|
|
/* ---- It is now safe again to call kwsysProcessCleanup. ----- */
|
|
/* Close all the pipes. */
|
|
kwsysProcessCleanup(cp, 0);
|
|
|
|
/* Determine the outcome. */
|
|
if (cp->Killed) {
|
|
/* We killed the child. */
|
|
cp->State = kwsysProcess_State_Killed;
|
|
} else if (cp->TimeoutExpired) {
|
|
/* The timeout expired. */
|
|
cp->State = kwsysProcess_State_Expired;
|
|
} else {
|
|
/* The children exited. Report the outcome of the child processes. */
|
|
for (i = 0; i < cp->NumberOfCommands; ++i) {
|
|
cp->ProcessResults[i].ExitCode = cp->CommandExitCodes[i];
|
|
if ((cp->ProcessResults[i].ExitCode & 0xF0000000) == 0xC0000000) {
|
|
/* Child terminated due to exceptional behavior. */
|
|
cp->ProcessResults[i].State = kwsysProcess_StateByIndex_Exception;
|
|
cp->ProcessResults[i].ExitValue = 1;
|
|
kwsysProcessSetExitExceptionByIndex(cp, cp->ProcessResults[i].ExitCode,
|
|
i);
|
|
} else {
|
|
/* Child exited without exception. */
|
|
cp->ProcessResults[i].State = kwsysProcess_StateByIndex_Exited;
|
|
cp->ProcessResults[i].ExitException = kwsysProcess_Exception_None;
|
|
cp->ProcessResults[i].ExitValue = cp->ProcessResults[i].ExitCode;
|
|
}
|
|
}
|
|
/* support legacy state status value */
|
|
cp->State = cp->ProcessResults[cp->NumberOfCommands - 1].State;
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
void kwsysProcess_Interrupt(kwsysProcess* cp)
|
|
{
|
|
int i;
|
|
/* Make sure we are executing a process. */
|
|
if (!cp || cp->State != kwsysProcess_State_Executing || cp->TimeoutExpired ||
|
|
cp->Killed) {
|
|
KWSYSPE_DEBUG((stderr, "interrupt: child not executing\n"));
|
|
return;
|
|
}
|
|
|
|
/* Skip actually interrupting the child if it has already terminated. */
|
|
if (cp->Terminated) {
|
|
KWSYSPE_DEBUG((stderr, "interrupt: child already terminated\n"));
|
|
return;
|
|
}
|
|
|
|
/* Interrupt the children. */
|
|
if (cp->CreateProcessGroup) {
|
|
if (cp->ProcessInformation) {
|
|
for (i = 0; i < cp->NumberOfCommands; ++i) {
|
|
/* Make sure the process handle isn't closed (e.g. from disowning). */
|
|
if (cp->ProcessInformation[i].hProcess) {
|
|
/* The user created a process group for this process. The group ID
|
|
is the process ID for the original process in the group. Note
|
|
that we have to use Ctrl+Break: Ctrl+C is not allowed for process
|
|
groups. */
|
|
GenerateConsoleCtrlEvent(CTRL_BREAK_EVENT,
|
|
cp->ProcessInformation[i].dwProcessId);
|
|
}
|
|
}
|
|
}
|
|
} else {
|
|
/* No process group was created. Kill our own process group... */
|
|
GenerateConsoleCtrlEvent(CTRL_BREAK_EVENT, 0);
|
|
}
|
|
}
|
|
|
|
void kwsysProcess_Kill(kwsysProcess* cp)
|
|
{
|
|
int i;
|
|
/* Make sure we are executing a process. */
|
|
if (!cp || cp->State != kwsysProcess_State_Executing || cp->TimeoutExpired ||
|
|
cp->Killed) {
|
|
KWSYSPE_DEBUG((stderr, "kill: child not executing\n"));
|
|
return;
|
|
}
|
|
|
|
/* Disable the reading threads. */
|
|
KWSYSPE_DEBUG((stderr, "kill: disabling pipe threads\n"));
|
|
kwsysProcessDisablePipeThreads(cp);
|
|
|
|
/* Skip actually killing the child if it has already terminated. */
|
|
if (cp->Terminated) {
|
|
KWSYSPE_DEBUG((stderr, "kill: child already terminated\n"));
|
|
return;
|
|
}
|
|
|
|
/* Kill the children. */
|
|
cp->Killed = 1;
|
|
for (i = 0; i < cp->NumberOfCommands; ++i) {
|
|
kwsysProcessKillTree(cp->ProcessInformation[i].dwProcessId);
|
|
/* Remove from global list of processes and close handles. */
|
|
kwsysProcessesRemove(cp->ProcessInformation[i].hProcess);
|
|
kwsysProcessCleanupHandle(&cp->ProcessInformation[i].hThread);
|
|
kwsysProcessCleanupHandle(&cp->ProcessInformation[i].hProcess);
|
|
}
|
|
|
|
/* We are killing the children and ignoring all data. Do not wait
|
|
for them to exit. */
|
|
}
|
|
|
|
void kwsysProcess_KillPID(unsigned long process_id)
|
|
{
|
|
kwsysProcessKillTree((DWORD)process_id);
|
|
}
|
|
|
|
/*
|
|
Function executed for each pipe's thread. Argument is a pointer to
|
|
the kwsysProcessPipeData instance for this thread.
|
|
*/
|
|
DWORD WINAPI kwsysProcessPipeThreadRead(LPVOID ptd)
|
|
{
|
|
kwsysProcessPipeData* td = (kwsysProcessPipeData*)ptd;
|
|
kwsysProcess* cp = td->Process;
|
|
|
|
/* Wait for a process to be ready. */
|
|
while ((WaitForSingleObject(td->Reader.Ready, INFINITE), !cp->Deleting)) {
|
|
/* Read output from the process for this thread's pipe. */
|
|
kwsysProcessPipeThreadReadPipe(cp, td);
|
|
|
|
/* Signal the main thread we have reset for a new process. */
|
|
ReleaseSemaphore(td->Reader.Reset, 1, 0);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
Function called in each pipe's thread to handle data for one
|
|
execution of a subprocess.
|
|
*/
|
|
void kwsysProcessPipeThreadReadPipe(kwsysProcess* cp, kwsysProcessPipeData* td)
|
|
{
|
|
/* Wait for space in the thread's buffer. */
|
|
while ((KWSYSPE_DEBUG((stderr, "wait for read %d\n", td->Index)),
|
|
WaitForSingleObject(td->Reader.Go, INFINITE), !td->Closed)) {
|
|
KWSYSPE_DEBUG((stderr, "reading %d\n", td->Index));
|
|
|
|
/* Read data from the pipe. This may block until data are available. */
|
|
if (!ReadFile(td->Read, td->DataBuffer, KWSYSPE_PIPE_BUFFER_SIZE,
|
|
&td->DataLength, 0)) {
|
|
if (GetLastError() != ERROR_BROKEN_PIPE) {
|
|
/* UNEXPECTED failure to read the pipe. */
|
|
}
|
|
|
|
/* The pipe closed. There are no more data to read. */
|
|
td->Closed = 1;
|
|
KWSYSPE_DEBUG((stderr, "read closed %d\n", td->Index));
|
|
}
|
|
|
|
KWSYSPE_DEBUG((stderr, "read %d\n", td->Index));
|
|
|
|
/* Wait for our turn to be handled by the main thread. */
|
|
WaitForSingleObject(cp->SharedIndexMutex, INFINITE);
|
|
|
|
KWSYSPE_DEBUG((stderr, "reporting read %d\n", td->Index));
|
|
|
|
/* Tell the main thread we have something to report. */
|
|
cp->SharedIndex = td->Index;
|
|
ReleaseSemaphore(cp->Full, 1, 0);
|
|
}
|
|
|
|
/* We were signalled to exit with our buffer empty. Reset the
|
|
mutex for a new process. */
|
|
KWSYSPE_DEBUG((stderr, "self releasing reader %d\n", td->Index));
|
|
ReleaseSemaphore(td->Reader.Go, 1, 0);
|
|
}
|
|
|
|
/*
|
|
Function executed for each pipe's thread. Argument is a pointer to
|
|
the kwsysProcessPipeData instance for this thread.
|
|
*/
|
|
DWORD WINAPI kwsysProcessPipeThreadWake(LPVOID ptd)
|
|
{
|
|
kwsysProcessPipeData* td = (kwsysProcessPipeData*)ptd;
|
|
kwsysProcess* cp = td->Process;
|
|
|
|
/* Wait for a process to be ready. */
|
|
while ((WaitForSingleObject(td->Waker.Ready, INFINITE), !cp->Deleting)) {
|
|
/* Wait for a possible wakeup. */
|
|
kwsysProcessPipeThreadWakePipe(cp, td);
|
|
|
|
/* Signal the main thread we have reset for a new process. */
|
|
ReleaseSemaphore(td->Waker.Reset, 1, 0);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
Function called in each pipe's thread to handle reading thread
|
|
wakeup for one execution of a subprocess.
|
|
*/
|
|
void kwsysProcessPipeThreadWakePipe(kwsysProcess* cp, kwsysProcessPipeData* td)
|
|
{
|
|
(void)cp;
|
|
|
|
/* Wait for a possible wake command. */
|
|
KWSYSPE_DEBUG((stderr, "wait for wake %d\n", td->Index));
|
|
WaitForSingleObject(td->Waker.Go, INFINITE);
|
|
KWSYSPE_DEBUG((stderr, "waking %d\n", td->Index));
|
|
|
|
/* If the pipe is not closed, we need to wake up the reading thread. */
|
|
if (!td->Closed) {
|
|
DWORD dummy;
|
|
KWSYSPE_DEBUG((stderr, "waker %d writing byte\n", td->Index));
|
|
WriteFile(td->Write, "", 1, &dummy, 0);
|
|
KWSYSPE_DEBUG((stderr, "waker %d wrote byte\n", td->Index));
|
|
}
|
|
}
|
|
|
|
/* Initialize a process control structure for kwsysProcess_Execute. */
|
|
int kwsysProcessInitialize(kwsysProcess* cp)
|
|
{
|
|
int i;
|
|
/* Reset internal status flags. */
|
|
cp->TimeoutExpired = 0;
|
|
cp->Terminated = 0;
|
|
cp->Killed = 0;
|
|
|
|
free(cp->ProcessResults);
|
|
/* Allocate process result information for each process. */
|
|
cp->ProcessResults = (kwsysProcessResults*)malloc(
|
|
sizeof(kwsysProcessResults) * (cp->NumberOfCommands));
|
|
if (!cp->ProcessResults) {
|
|
return 0;
|
|
}
|
|
ZeroMemory(cp->ProcessResults,
|
|
sizeof(kwsysProcessResults) * cp->NumberOfCommands);
|
|
for (i = 0; i < cp->NumberOfCommands; i++) {
|
|
cp->ProcessResults[i].ExitException = kwsysProcess_Exception_None;
|
|
cp->ProcessResults[i].State = kwsysProcess_StateByIndex_Starting;
|
|
cp->ProcessResults[i].ExitCode = 1;
|
|
cp->ProcessResults[i].ExitValue = 1;
|
|
strcpy(cp->ProcessResults[i].ExitExceptionString, "No exception");
|
|
}
|
|
|
|
/* Allocate process information for each process. */
|
|
free(cp->ProcessInformation);
|
|
cp->ProcessInformation = (PROCESS_INFORMATION*)malloc(
|
|
sizeof(PROCESS_INFORMATION) * cp->NumberOfCommands);
|
|
if (!cp->ProcessInformation) {
|
|
return 0;
|
|
}
|
|
ZeroMemory(cp->ProcessInformation,
|
|
sizeof(PROCESS_INFORMATION) * cp->NumberOfCommands);
|
|
free(cp->CommandExitCodes);
|
|
cp->CommandExitCodes = (DWORD*)malloc(sizeof(DWORD) * cp->NumberOfCommands);
|
|
if (!cp->CommandExitCodes) {
|
|
return 0;
|
|
}
|
|
ZeroMemory(cp->CommandExitCodes, sizeof(DWORD) * cp->NumberOfCommands);
|
|
|
|
/* Allocate event wait array. The first event is cp->Full, the rest
|
|
are the process termination events. */
|
|
cp->ProcessEvents =
|
|
(PHANDLE)malloc(sizeof(HANDLE) * (cp->NumberOfCommands + 1));
|
|
if (!cp->ProcessEvents) {
|
|
return 0;
|
|
}
|
|
ZeroMemory(cp->ProcessEvents, sizeof(HANDLE) * (cp->NumberOfCommands + 1));
|
|
cp->ProcessEvents[0] = cp->Full;
|
|
cp->ProcessEventsLength = cp->NumberOfCommands + 1;
|
|
|
|
/* Allocate space to save the real working directory of this process. */
|
|
if (cp->WorkingDirectory) {
|
|
cp->RealWorkingDirectoryLength = GetCurrentDirectoryW(0, 0);
|
|
if (cp->RealWorkingDirectoryLength > 0) {
|
|
cp->RealWorkingDirectory =
|
|
malloc(cp->RealWorkingDirectoryLength * sizeof(wchar_t));
|
|
if (!cp->RealWorkingDirectory) {
|
|
return 0;
|
|
}
|
|
}
|
|
}
|
|
{
|
|
for (i = 0; i < 3; ++i) {
|
|
cp->PipeChildStd[i] = INVALID_HANDLE_VALUE;
|
|
}
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
static DWORD kwsysProcessCreateChildHandle(PHANDLE out, HANDLE in, int isStdIn)
|
|
{
|
|
DWORD flags;
|
|
|
|
/* Check whether the handle is valid for this process. */
|
|
if (in != INVALID_HANDLE_VALUE && GetHandleInformation(in, &flags)) {
|
|
/* Use the handle as-is if it is already inherited. */
|
|
if (flags & HANDLE_FLAG_INHERIT) {
|
|
*out = in;
|
|
return ERROR_SUCCESS;
|
|
}
|
|
|
|
/* Create an inherited copy of this handle. */
|
|
if (DuplicateHandle(GetCurrentProcess(), in, GetCurrentProcess(), out, 0,
|
|
TRUE, DUPLICATE_SAME_ACCESS)) {
|
|
return ERROR_SUCCESS;
|
|
} else {
|
|
return GetLastError();
|
|
}
|
|
} else {
|
|
/* The given handle is not valid for this process. Some child
|
|
processes may break if they do not have a valid standard handle,
|
|
so open NUL to give to the child. */
|
|
SECURITY_ATTRIBUTES sa;
|
|
ZeroMemory(&sa, sizeof(sa));
|
|
sa.nLength = (DWORD)sizeof(sa);
|
|
sa.bInheritHandle = 1;
|
|
*out = CreateFileW(
|
|
L"NUL",
|
|
(isStdIn ? GENERIC_READ : (GENERIC_WRITE | FILE_READ_ATTRIBUTES)),
|
|
FILE_SHARE_READ | FILE_SHARE_WRITE, &sa, OPEN_EXISTING, 0, 0);
|
|
return (*out != INVALID_HANDLE_VALUE) ? ERROR_SUCCESS : GetLastError();
|
|
}
|
|
}
|
|
|
|
DWORD kwsysProcessCreate(kwsysProcess* cp, int index,
|
|
kwsysProcessCreateInformation* si)
|
|
{
|
|
DWORD creationFlags;
|
|
DWORD error = ERROR_SUCCESS;
|
|
|
|
/* Check if we are currently exiting. */
|
|
if (!kwsysTryEnterCreateProcessSection()) {
|
|
/* The Ctrl handler is currently working on exiting our process. Rather
|
|
than return an error code, which could cause incorrect conclusions to be
|
|
reached by the caller, we simply hang. (For example, a CMake try_run
|
|
configure step might cause the project to configure wrong.) */
|
|
Sleep(INFINITE);
|
|
}
|
|
|
|
/* Create the child in a suspended state so we can wait until all
|
|
children have been created before running any one. */
|
|
creationFlags = CREATE_SUSPENDED;
|
|
if (cp->CreateProcessGroup) {
|
|
creationFlags |= CREATE_NEW_PROCESS_GROUP;
|
|
}
|
|
|
|
/* Create inherited copies of the handles. */
|
|
(error = kwsysProcessCreateChildHandle(&si->StartupInfo.hStdInput,
|
|
si->hStdInput, 1)) ||
|
|
(error = kwsysProcessCreateChildHandle(&si->StartupInfo.hStdOutput,
|
|
si->hStdOutput, 0)) ||
|
|
(error = kwsysProcessCreateChildHandle(&si->StartupInfo.hStdError,
|
|
si->hStdError, 0)) ||
|
|
/* Create the process. */
|
|
(!CreateProcessW(0, cp->Commands[index], 0, 0, TRUE, creationFlags, 0, 0,
|
|
&si->StartupInfo, &cp->ProcessInformation[index]) &&
|
|
(error = GetLastError()));
|
|
|
|
/* Close the inherited copies of the handles. */
|
|
if (si->StartupInfo.hStdInput != si->hStdInput) {
|
|
kwsysProcessCleanupHandle(&si->StartupInfo.hStdInput);
|
|
}
|
|
if (si->StartupInfo.hStdOutput != si->hStdOutput) {
|
|
kwsysProcessCleanupHandle(&si->StartupInfo.hStdOutput);
|
|
}
|
|
if (si->StartupInfo.hStdError != si->hStdError) {
|
|
kwsysProcessCleanupHandle(&si->StartupInfo.hStdError);
|
|
}
|
|
|
|
/* Add the process to the global list of processes. */
|
|
if (!error &&
|
|
!kwsysProcessesAdd(cp->ProcessInformation[index].hProcess,
|
|
cp->ProcessInformation[index].dwProcessId,
|
|
cp->CreateProcessGroup)) {
|
|
/* This failed for some reason. Kill the suspended process. */
|
|
TerminateProcess(cp->ProcessInformation[index].hProcess, 1);
|
|
/* And clean up... */
|
|
kwsysProcessCleanupHandle(&cp->ProcessInformation[index].hProcess);
|
|
kwsysProcessCleanupHandle(&cp->ProcessInformation[index].hThread);
|
|
strcpy(cp->ErrorMessage, "kwsysProcessesAdd function failed");
|
|
error = ERROR_NOT_ENOUGH_MEMORY; /* Most likely reason. */
|
|
}
|
|
|
|
/* If the console Ctrl handler is waiting for us, this will release it... */
|
|
kwsysLeaveCreateProcessSection();
|
|
return error;
|
|
}
|
|
|
|
void kwsysProcessDestroy(kwsysProcess* cp, int event)
|
|
{
|
|
int i;
|
|
int index;
|
|
|
|
/* Find the process index for the termination event. */
|
|
for (index = 0; index < cp->NumberOfCommands; ++index) {
|
|
if (cp->ProcessInformation[index].hProcess == cp->ProcessEvents[event]) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* Check the exit code of the process. */
|
|
GetExitCodeProcess(cp->ProcessInformation[index].hProcess,
|
|
&cp->CommandExitCodes[index]);
|
|
|
|
/* Remove from global list of processes. */
|
|
kwsysProcessesRemove(cp->ProcessInformation[index].hProcess);
|
|
|
|
/* Close the process handle for the terminated process. */
|
|
kwsysProcessCleanupHandle(&cp->ProcessInformation[index].hProcess);
|
|
|
|
/* Remove the process from the available events. */
|
|
cp->ProcessEventsLength -= 1;
|
|
for (i = event; i < cp->ProcessEventsLength; ++i) {
|
|
cp->ProcessEvents[i] = cp->ProcessEvents[i + 1];
|
|
}
|
|
|
|
/* Check if all processes have terminated. */
|
|
if (cp->ProcessEventsLength == 1) {
|
|
cp->Terminated = 1;
|
|
|
|
/* Close our copies of the pipe write handles so the pipe threads
|
|
can detect end-of-data. */
|
|
for (i = 0; i < KWSYSPE_PIPE_COUNT; ++i) {
|
|
/* TODO: If the child created its own child (our grandchild)
|
|
which inherited a copy of the pipe write-end then the pipe
|
|
may not close and we will still need the waker write pipe.
|
|
However we still want to be able to detect end-of-data in the
|
|
normal case. The reader thread will have to switch to using
|
|
PeekNamedPipe to read the last bit of data from the pipe
|
|
without blocking. This is equivalent to using a non-blocking
|
|
read on posix. */
|
|
KWSYSPE_DEBUG((stderr, "closing wakeup write %d\n", i));
|
|
kwsysProcessCleanupHandle(&cp->Pipe[i].Write);
|
|
}
|
|
}
|
|
}
|
|
|
|
DWORD kwsysProcessSetupOutputPipeFile(PHANDLE phandle, const char* name)
|
|
{
|
|
HANDLE fout;
|
|
wchar_t* wname;
|
|
DWORD error;
|
|
if (!name) {
|
|
return ERROR_INVALID_PARAMETER;
|
|
}
|
|
|
|
/* Close the existing handle. */
|
|
kwsysProcessCleanupHandle(phandle);
|
|
|
|
/* Create a handle to write a file for the pipe. */
|
|
wname = kwsysEncoding_DupToWide(name);
|
|
fout =
|
|
CreateFileW(wname, GENERIC_WRITE, FILE_SHARE_READ, 0, CREATE_ALWAYS, 0, 0);
|
|
error = GetLastError();
|
|
free(wname);
|
|
if (fout == INVALID_HANDLE_VALUE) {
|
|
return error;
|
|
}
|
|
|
|
/* Assign the replacement handle. */
|
|
*phandle = fout;
|
|
return ERROR_SUCCESS;
|
|
}
|
|
|
|
void kwsysProcessSetupSharedPipe(DWORD nStdHandle, PHANDLE handle)
|
|
{
|
|
/* Close the existing handle. */
|
|
kwsysProcessCleanupHandle(handle);
|
|
/* Store the new standard handle. */
|
|
*handle = GetStdHandle(nStdHandle);
|
|
}
|
|
|
|
void kwsysProcessSetupPipeNative(HANDLE native, PHANDLE handle)
|
|
{
|
|
/* Close the existing handle. */
|
|
kwsysProcessCleanupHandle(handle);
|
|
/* Store the new given handle. */
|
|
*handle = native;
|
|
}
|
|
|
|
/* Close the given handle if it is open. Reset its value to 0. */
|
|
void kwsysProcessCleanupHandle(PHANDLE h)
|
|
{
|
|
if (h && *h && *h != INVALID_HANDLE_VALUE &&
|
|
*h != GetStdHandle(STD_INPUT_HANDLE) &&
|
|
*h != GetStdHandle(STD_OUTPUT_HANDLE) &&
|
|
*h != GetStdHandle(STD_ERROR_HANDLE)) {
|
|
CloseHandle(*h);
|
|
*h = INVALID_HANDLE_VALUE;
|
|
}
|
|
}
|
|
|
|
/* Close all handles created by kwsysProcess_Execute. */
|
|
void kwsysProcessCleanup(kwsysProcess* cp, DWORD error)
|
|
{
|
|
int i;
|
|
/* If this is an error case, report the error. */
|
|
if (error) {
|
|
/* Construct an error message if one has not been provided already. */
|
|
if (cp->ErrorMessage[0] == 0) {
|
|
/* Format the error message. */
|
|
wchar_t err_msg[KWSYSPE_PIPE_BUFFER_SIZE];
|
|
DWORD length = FormatMessageW(
|
|
FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, 0, error,
|
|
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), err_msg,
|
|
KWSYSPE_PIPE_BUFFER_SIZE, 0);
|
|
if (length < 1) {
|
|
/* FormatMessage failed. Use a default message. */
|
|
snprintf(cp->ErrorMessage, KWSYSPE_PIPE_BUFFER_SIZE,
|
|
"Process execution failed with error 0x%lX. "
|
|
"FormatMessage failed with error 0x%lX",
|
|
error, GetLastError());
|
|
}
|
|
if (!WideCharToMultiByte(CP_UTF8, 0, err_msg, -1, cp->ErrorMessage,
|
|
KWSYSPE_PIPE_BUFFER_SIZE, NULL, NULL)) {
|
|
/* WideCharToMultiByte failed. Use a default message. */
|
|
snprintf(cp->ErrorMessage, KWSYSPE_PIPE_BUFFER_SIZE,
|
|
"Process execution failed with error 0x%lX. "
|
|
"WideCharToMultiByte failed with error 0x%lX",
|
|
error, GetLastError());
|
|
}
|
|
}
|
|
|
|
/* Remove trailing period and newline, if any. */
|
|
kwsysProcessCleanErrorMessage(cp);
|
|
|
|
/* Set the error state. */
|
|
cp->State = kwsysProcess_State_Error;
|
|
|
|
/* Cleanup any processes already started in a suspended state. */
|
|
if (cp->ProcessInformation) {
|
|
for (i = 0; i < cp->NumberOfCommands; ++i) {
|
|
if (cp->ProcessInformation[i].hProcess) {
|
|
TerminateProcess(cp->ProcessInformation[i].hProcess, 255);
|
|
WaitForSingleObject(cp->ProcessInformation[i].hProcess, INFINITE);
|
|
}
|
|
}
|
|
for (i = 0; i < cp->NumberOfCommands; ++i) {
|
|
/* Remove from global list of processes and close handles. */
|
|
kwsysProcessesRemove(cp->ProcessInformation[i].hProcess);
|
|
kwsysProcessCleanupHandle(&cp->ProcessInformation[i].hThread);
|
|
kwsysProcessCleanupHandle(&cp->ProcessInformation[i].hProcess);
|
|
}
|
|
}
|
|
|
|
/* Restore the working directory. */
|
|
if (cp->RealWorkingDirectory) {
|
|
SetCurrentDirectoryW(cp->RealWorkingDirectory);
|
|
}
|
|
}
|
|
|
|
/* Free memory. */
|
|
if (cp->ProcessInformation) {
|
|
free(cp->ProcessInformation);
|
|
cp->ProcessInformation = 0;
|
|
}
|
|
if (cp->ProcessEvents) {
|
|
free(cp->ProcessEvents);
|
|
cp->ProcessEvents = 0;
|
|
}
|
|
if (cp->RealWorkingDirectory) {
|
|
free(cp->RealWorkingDirectory);
|
|
cp->RealWorkingDirectory = 0;
|
|
}
|
|
|
|
/* Close each pipe. */
|
|
for (i = 0; i < KWSYSPE_PIPE_COUNT; ++i) {
|
|
kwsysProcessCleanupHandle(&cp->Pipe[i].Write);
|
|
kwsysProcessCleanupHandle(&cp->Pipe[i].Read);
|
|
cp->Pipe[i].Closed = 0;
|
|
}
|
|
for (i = 0; i < 3; ++i) {
|
|
kwsysProcessCleanupHandle(&cp->PipeChildStd[i]);
|
|
}
|
|
}
|
|
|
|
void kwsysProcessCleanErrorMessage(kwsysProcess* cp)
|
|
{
|
|
/* Remove trailing period and newline, if any. */
|
|
size_t length = strlen(cp->ErrorMessage);
|
|
if (cp->ErrorMessage[length - 1] == '\n') {
|
|
cp->ErrorMessage[length - 1] = 0;
|
|
--length;
|
|
if (length > 0 && cp->ErrorMessage[length - 1] == '\r') {
|
|
cp->ErrorMessage[length - 1] = 0;
|
|
--length;
|
|
}
|
|
}
|
|
if (length > 0 && cp->ErrorMessage[length - 1] == '.') {
|
|
cp->ErrorMessage[length - 1] = 0;
|
|
}
|
|
}
|
|
|
|
/* Get the time at which either the process or user timeout will
|
|
expire. Returns 1 if the user timeout is first, and 0 otherwise. */
|
|
int kwsysProcessGetTimeoutTime(kwsysProcess* cp, double* userTimeout,
|
|
kwsysProcessTime* timeoutTime)
|
|
{
|
|
/* The first time this is called, we need to calculate the time at
|
|
which the child will timeout. */
|
|
if (cp->Timeout && cp->TimeoutTime.QuadPart < 0) {
|
|
kwsysProcessTime length = kwsysProcessTimeFromDouble(cp->Timeout);
|
|
cp->TimeoutTime = kwsysProcessTimeAdd(cp->StartTime, length);
|
|
}
|
|
|
|
/* Start with process timeout. */
|
|
*timeoutTime = cp->TimeoutTime;
|
|
|
|
/* Check if the user timeout is earlier. */
|
|
if (userTimeout) {
|
|
kwsysProcessTime currentTime = kwsysProcessTimeGetCurrent();
|
|
kwsysProcessTime userTimeoutLength =
|
|
kwsysProcessTimeFromDouble(*userTimeout);
|
|
kwsysProcessTime userTimeoutTime =
|
|
kwsysProcessTimeAdd(currentTime, userTimeoutLength);
|
|
if (timeoutTime->QuadPart < 0 ||
|
|
kwsysProcessTimeLess(userTimeoutTime, *timeoutTime)) {
|
|
*timeoutTime = userTimeoutTime;
|
|
return 1;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/* Get the length of time before the given timeout time arrives.
|
|
Returns 1 if the time has already arrived, and 0 otherwise. */
|
|
int kwsysProcessGetTimeoutLeft(kwsysProcessTime* timeoutTime,
|
|
double* userTimeout,
|
|
kwsysProcessTime* timeoutLength)
|
|
{
|
|
if (timeoutTime->QuadPart < 0) {
|
|
/* No timeout time has been requested. */
|
|
return 0;
|
|
} else {
|
|
/* Calculate the remaining time. */
|
|
kwsysProcessTime currentTime = kwsysProcessTimeGetCurrent();
|
|
*timeoutLength = kwsysProcessTimeSubtract(*timeoutTime, currentTime);
|
|
|
|
if (timeoutLength->QuadPart < 0 && userTimeout && *userTimeout <= 0) {
|
|
/* Caller has explicitly requested a zero timeout. */
|
|
timeoutLength->QuadPart = 0;
|
|
}
|
|
|
|
if (timeoutLength->QuadPart < 0) {
|
|
/* Timeout has already expired. */
|
|
return 1;
|
|
} else {
|
|
/* There is some time left. */
|
|
return 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
kwsysProcessTime kwsysProcessTimeGetCurrent()
|
|
{
|
|
kwsysProcessTime current;
|
|
FILETIME ft;
|
|
GetSystemTimeAsFileTime(&ft);
|
|
current.LowPart = ft.dwLowDateTime;
|
|
current.HighPart = ft.dwHighDateTime;
|
|
return current;
|
|
}
|
|
|
|
DWORD kwsysProcessTimeToDWORD(kwsysProcessTime t)
|
|
{
|
|
return (DWORD)(t.QuadPart * 0.0001);
|
|
}
|
|
|
|
double kwsysProcessTimeToDouble(kwsysProcessTime t)
|
|
{
|
|
return t.QuadPart * 0.0000001;
|
|
}
|
|
|
|
kwsysProcessTime kwsysProcessTimeFromDouble(double d)
|
|
{
|
|
kwsysProcessTime t;
|
|
t.QuadPart = (LONGLONG)(d * 10000000);
|
|
return t;
|
|
}
|
|
|
|
int kwsysProcessTimeLess(kwsysProcessTime in1, kwsysProcessTime in2)
|
|
{
|
|
return in1.QuadPart < in2.QuadPart;
|
|
}
|
|
|
|
kwsysProcessTime kwsysProcessTimeAdd(kwsysProcessTime in1,
|
|
kwsysProcessTime in2)
|
|
{
|
|
kwsysProcessTime out;
|
|
out.QuadPart = in1.QuadPart + in2.QuadPart;
|
|
return out;
|
|
}
|
|
|
|
kwsysProcessTime kwsysProcessTimeSubtract(kwsysProcessTime in1,
|
|
kwsysProcessTime in2)
|
|
{
|
|
kwsysProcessTime out;
|
|
out.QuadPart = in1.QuadPart - in2.QuadPart;
|
|
return out;
|
|
}
|
|
|
|
#define KWSYSPE_CASE(type, str) \
|
|
cp->ProcessResults[idx].ExitException = kwsysProcess_Exception_##type; \
|
|
strcpy(cp->ProcessResults[idx].ExitExceptionString, str)
|
|
static void kwsysProcessSetExitExceptionByIndex(kwsysProcess* cp, int code,
|
|
int idx)
|
|
{
|
|
switch (code) {
|
|
case STATUS_CONTROL_C_EXIT:
|
|
KWSYSPE_CASE(Interrupt, "User interrupt");
|
|
break;
|
|
|
|
case STATUS_FLOAT_DENORMAL_OPERAND:
|
|
KWSYSPE_CASE(Numerical, "Floating-point exception (denormal operand)");
|
|
break;
|
|
case STATUS_FLOAT_DIVIDE_BY_ZERO:
|
|
KWSYSPE_CASE(Numerical, "Divide-by-zero");
|
|
break;
|
|
case STATUS_FLOAT_INEXACT_RESULT:
|
|
KWSYSPE_CASE(Numerical, "Floating-point exception (inexact result)");
|
|
break;
|
|
case STATUS_FLOAT_INVALID_OPERATION:
|
|
KWSYSPE_CASE(Numerical, "Invalid floating-point operation");
|
|
break;
|
|
case STATUS_FLOAT_OVERFLOW:
|
|
KWSYSPE_CASE(Numerical, "Floating-point overflow");
|
|
break;
|
|
case STATUS_FLOAT_STACK_CHECK:
|
|
KWSYSPE_CASE(Numerical, "Floating-point stack check failed");
|
|
break;
|
|
case STATUS_FLOAT_UNDERFLOW:
|
|
KWSYSPE_CASE(Numerical, "Floating-point underflow");
|
|
break;
|
|
#ifdef STATUS_FLOAT_MULTIPLE_FAULTS
|
|
case STATUS_FLOAT_MULTIPLE_FAULTS:
|
|
KWSYSPE_CASE(Numerical, "Floating-point exception (multiple faults)");
|
|
break;
|
|
#endif
|
|
#ifdef STATUS_FLOAT_MULTIPLE_TRAPS
|
|
case STATUS_FLOAT_MULTIPLE_TRAPS:
|
|
KWSYSPE_CASE(Numerical, "Floating-point exception (multiple traps)");
|
|
break;
|
|
#endif
|
|
case STATUS_INTEGER_DIVIDE_BY_ZERO:
|
|
KWSYSPE_CASE(Numerical, "Integer divide-by-zero");
|
|
break;
|
|
case STATUS_INTEGER_OVERFLOW:
|
|
KWSYSPE_CASE(Numerical, "Integer overflow");
|
|
break;
|
|
|
|
case STATUS_DATATYPE_MISALIGNMENT:
|
|
KWSYSPE_CASE(Fault, "Datatype misalignment");
|
|
break;
|
|
case STATUS_ACCESS_VIOLATION:
|
|
KWSYSPE_CASE(Fault, "Access violation");
|
|
break;
|
|
case STATUS_IN_PAGE_ERROR:
|
|
KWSYSPE_CASE(Fault, "In-page error");
|
|
break;
|
|
case STATUS_INVALID_HANDLE:
|
|
KWSYSPE_CASE(Fault, "Invalid handle");
|
|
break;
|
|
case STATUS_NONCONTINUABLE_EXCEPTION:
|
|
KWSYSPE_CASE(Fault, "Noncontinuable exception");
|
|
break;
|
|
case STATUS_INVALID_DISPOSITION:
|
|
KWSYSPE_CASE(Fault, "Invalid disposition");
|
|
break;
|
|
case STATUS_ARRAY_BOUNDS_EXCEEDED:
|
|
KWSYSPE_CASE(Fault, "Array bounds exceeded");
|
|
break;
|
|
case STATUS_STACK_OVERFLOW:
|
|
KWSYSPE_CASE(Fault, "Stack overflow");
|
|
break;
|
|
|
|
case STATUS_ILLEGAL_INSTRUCTION:
|
|
KWSYSPE_CASE(Illegal, "Illegal instruction");
|
|
break;
|
|
case STATUS_PRIVILEGED_INSTRUCTION:
|
|
KWSYSPE_CASE(Illegal, "Privileged instruction");
|
|
break;
|
|
|
|
case STATUS_NO_MEMORY:
|
|
default:
|
|
cp->ProcessResults[idx].ExitException = kwsysProcess_Exception_Other;
|
|
snprintf(cp->ProcessResults[idx].ExitExceptionString,
|
|
KWSYSPE_PIPE_BUFFER_SIZE, "Exit code 0x%x\n", code);
|
|
break;
|
|
}
|
|
}
|
|
#undef KWSYSPE_CASE
|
|
|
|
typedef struct kwsysProcess_List_s kwsysProcess_List;
|
|
static kwsysProcess_List* kwsysProcess_List_New(void);
|
|
static void kwsysProcess_List_Delete(kwsysProcess_List* self);
|
|
static int kwsysProcess_List_Update(kwsysProcess_List* self);
|
|
static int kwsysProcess_List_NextProcess(kwsysProcess_List* self);
|
|
static int kwsysProcess_List_GetCurrentProcessId(kwsysProcess_List* self);
|
|
static int kwsysProcess_List_GetCurrentParentId(kwsysProcess_List* self);
|
|
|
|
/* Windows NT 4 API definitions. */
|
|
#define STATUS_INFO_LENGTH_MISMATCH ((NTSTATUS)0xC0000004L)
|
|
typedef LONG NTSTATUS;
|
|
typedef LONG KPRIORITY;
|
|
typedef struct _UNICODE_STRING UNICODE_STRING;
|
|
struct _UNICODE_STRING
|
|
{
|
|
USHORT Length;
|
|
USHORT MaximumLength;
|
|
PWSTR Buffer;
|
|
};
|
|
|
|
/* The process information structure. Declare only enough to get
|
|
process identifiers. The rest may be ignored because we use the
|
|
NextEntryDelta to move through an array of instances. */
|
|
typedef struct _SYSTEM_PROCESS_INFORMATION SYSTEM_PROCESS_INFORMATION;
|
|
typedef SYSTEM_PROCESS_INFORMATION* PSYSTEM_PROCESS_INFORMATION;
|
|
struct _SYSTEM_PROCESS_INFORMATION
|
|
{
|
|
ULONG NextEntryDelta;
|
|
ULONG ThreadCount;
|
|
ULONG Reserved1[6];
|
|
LARGE_INTEGER CreateTime;
|
|
LARGE_INTEGER UserTime;
|
|
LARGE_INTEGER KernelTime;
|
|
UNICODE_STRING ProcessName;
|
|
KPRIORITY BasePriority;
|
|
ULONG ProcessId;
|
|
ULONG InheritedFromProcessId;
|
|
};
|
|
|
|
/* Toolhelp32 API definitions. */
|
|
#define TH32CS_SNAPPROCESS 0x00000002
|
|
#if defined(_WIN64)
|
|
typedef unsigned __int64 ProcessULONG_PTR;
|
|
#else
|
|
typedef unsigned long ProcessULONG_PTR;
|
|
#endif
|
|
typedef struct tagPROCESSENTRY32 PROCESSENTRY32;
|
|
typedef PROCESSENTRY32* LPPROCESSENTRY32;
|
|
struct tagPROCESSENTRY32
|
|
{
|
|
DWORD dwSize;
|
|
DWORD cntUsage;
|
|
DWORD th32ProcessID;
|
|
ProcessULONG_PTR th32DefaultHeapID;
|
|
DWORD th32ModuleID;
|
|
DWORD cntThreads;
|
|
DWORD th32ParentProcessID;
|
|
LONG pcPriClassBase;
|
|
DWORD dwFlags;
|
|
char szExeFile[MAX_PATH];
|
|
};
|
|
|
|
/* Windows API function types. */
|
|
typedef HANDLE(WINAPI* CreateToolhelp32SnapshotType)(DWORD, DWORD);
|
|
typedef BOOL(WINAPI* Process32FirstType)(HANDLE, LPPROCESSENTRY32);
|
|
typedef BOOL(WINAPI* Process32NextType)(HANDLE, LPPROCESSENTRY32);
|
|
typedef NTSTATUS(WINAPI* ZwQuerySystemInformationType)(ULONG, PVOID, ULONG,
|
|
PULONG);
|
|
|
|
static int kwsysProcess_List__New_NT4(kwsysProcess_List* self);
|
|
static int kwsysProcess_List__New_Snapshot(kwsysProcess_List* self);
|
|
static void kwsysProcess_List__Delete_NT4(kwsysProcess_List* self);
|
|
static void kwsysProcess_List__Delete_Snapshot(kwsysProcess_List* self);
|
|
static int kwsysProcess_List__Update_NT4(kwsysProcess_List* self);
|
|
static int kwsysProcess_List__Update_Snapshot(kwsysProcess_List* self);
|
|
static int kwsysProcess_List__Next_NT4(kwsysProcess_List* self);
|
|
static int kwsysProcess_List__Next_Snapshot(kwsysProcess_List* self);
|
|
static int kwsysProcess_List__GetProcessId_NT4(kwsysProcess_List* self);
|
|
static int kwsysProcess_List__GetProcessId_Snapshot(kwsysProcess_List* self);
|
|
static int kwsysProcess_List__GetParentId_NT4(kwsysProcess_List* self);
|
|
static int kwsysProcess_List__GetParentId_Snapshot(kwsysProcess_List* self);
|
|
|
|
struct kwsysProcess_List_s
|
|
{
|
|
/* Implementation switches at runtime based on version of Windows. */
|
|
int NT4;
|
|
|
|
/* Implementation functions and data for NT 4. */
|
|
ZwQuerySystemInformationType P_ZwQuerySystemInformation;
|
|
char* Buffer;
|
|
int BufferSize;
|
|
PSYSTEM_PROCESS_INFORMATION CurrentInfo;
|
|
|
|
/* Implementation functions and data for other Windows versions. */
|
|
CreateToolhelp32SnapshotType P_CreateToolhelp32Snapshot;
|
|
Process32FirstType P_Process32First;
|
|
Process32NextType P_Process32Next;
|
|
HANDLE Snapshot;
|
|
PROCESSENTRY32 CurrentEntry;
|
|
};
|
|
|
|
static kwsysProcess_List* kwsysProcess_List_New(void)
|
|
{
|
|
OSVERSIONINFO osv;
|
|
kwsysProcess_List* self;
|
|
|
|
/* Allocate and initialize the list object. */
|
|
if (!(self = (kwsysProcess_List*)malloc(sizeof(kwsysProcess_List)))) {
|
|
return 0;
|
|
}
|
|
memset(self, 0, sizeof(*self));
|
|
|
|
/* Select an implementation. */
|
|
ZeroMemory(&osv, sizeof(osv));
|
|
osv.dwOSVersionInfoSize = sizeof(osv);
|
|
#ifdef KWSYS_WINDOWS_DEPRECATED_GetVersionEx
|
|
# pragma warning(push)
|
|
# ifdef __INTEL_COMPILER
|
|
# pragma warning(disable : 1478)
|
|
# elif defined __clang__
|
|
# pragma clang diagnostic push
|
|
# pragma clang diagnostic ignored "-Wdeprecated-declarations"
|
|
# else
|
|
# pragma warning(disable : 4996)
|
|
# endif
|
|
#endif
|
|
GetVersionEx(&osv);
|
|
#ifdef KWSYS_WINDOWS_DEPRECATED_GetVersionEx
|
|
# ifdef __clang__
|
|
# pragma clang diagnostic pop
|
|
# else
|
|
# pragma warning(pop)
|
|
# endif
|
|
#endif
|
|
self->NT4 =
|
|
(osv.dwPlatformId == VER_PLATFORM_WIN32_NT && osv.dwMajorVersion < 5) ? 1
|
|
: 0;
|
|
|
|
/* Initialize the selected implementation. */
|
|
if (!(self->NT4 ? kwsysProcess_List__New_NT4(self)
|
|
: kwsysProcess_List__New_Snapshot(self))) {
|
|
kwsysProcess_List_Delete(self);
|
|
return 0;
|
|
}
|
|
|
|
/* Update to the current set of processes. */
|
|
if (!kwsysProcess_List_Update(self)) {
|
|
kwsysProcess_List_Delete(self);
|
|
return 0;
|
|
}
|
|
return self;
|
|
}
|
|
|
|
static void kwsysProcess_List_Delete(kwsysProcess_List* self)
|
|
{
|
|
if (self) {
|
|
if (self->NT4) {
|
|
kwsysProcess_List__Delete_NT4(self);
|
|
} else {
|
|
kwsysProcess_List__Delete_Snapshot(self);
|
|
}
|
|
free(self);
|
|
}
|
|
}
|
|
|
|
static int kwsysProcess_List_Update(kwsysProcess_List* self)
|
|
{
|
|
return self ? (self->NT4 ? kwsysProcess_List__Update_NT4(self)
|
|
: kwsysProcess_List__Update_Snapshot(self))
|
|
: 0;
|
|
}
|
|
|
|
static int kwsysProcess_List_GetCurrentProcessId(kwsysProcess_List* self)
|
|
{
|
|
return self ? (self->NT4 ? kwsysProcess_List__GetProcessId_NT4(self)
|
|
: kwsysProcess_List__GetProcessId_Snapshot(self))
|
|
: -1;
|
|
}
|
|
|
|
static int kwsysProcess_List_GetCurrentParentId(kwsysProcess_List* self)
|
|
{
|
|
return self ? (self->NT4 ? kwsysProcess_List__GetParentId_NT4(self)
|
|
: kwsysProcess_List__GetParentId_Snapshot(self))
|
|
: -1;
|
|
}
|
|
|
|
static int kwsysProcess_List_NextProcess(kwsysProcess_List* self)
|
|
{
|
|
return (self ? (self->NT4 ? kwsysProcess_List__Next_NT4(self)
|
|
: kwsysProcess_List__Next_Snapshot(self))
|
|
: 0);
|
|
}
|
|
|
|
static int kwsysProcess_List__New_NT4(kwsysProcess_List* self)
|
|
{
|
|
/* Get a handle to the NT runtime module that should already be
|
|
loaded in this program. This does not actually increment the
|
|
reference count to the module so we do not need to close the
|
|
handle. */
|
|
HMODULE hNT = GetModuleHandleW(L"ntdll.dll");
|
|
if (hNT) {
|
|
/* Get pointers to the needed API functions. */
|
|
self->P_ZwQuerySystemInformation =
|
|
((ZwQuerySystemInformationType)GetProcAddress(
|
|
hNT, "ZwQuerySystemInformation"));
|
|
}
|
|
if (!self->P_ZwQuerySystemInformation) {
|
|
return 0;
|
|
}
|
|
|
|
/* Allocate an initial process information buffer. */
|
|
self->BufferSize = 32768;
|
|
self->Buffer = (char*)malloc(self->BufferSize);
|
|
return self->Buffer ? 1 : 0;
|
|
}
|
|
|
|
static void kwsysProcess_List__Delete_NT4(kwsysProcess_List* self)
|
|
{
|
|
/* Free the process information buffer. */
|
|
free(self->Buffer);
|
|
}
|
|
|
|
static int kwsysProcess_List__Update_NT4(kwsysProcess_List* self)
|
|
{
|
|
self->CurrentInfo = 0;
|
|
for (;;) {
|
|
/* Query number 5 is for system process list. */
|
|
NTSTATUS status =
|
|
self->P_ZwQuerySystemInformation(5, self->Buffer, self->BufferSize, 0);
|
|
if (status == STATUS_INFO_LENGTH_MISMATCH) {
|
|
/* The query requires a bigger buffer. */
|
|
int newBufferSize = self->BufferSize * 2;
|
|
char* newBuffer = (char*)malloc(newBufferSize);
|
|
if (newBuffer) {
|
|
free(self->Buffer);
|
|
self->Buffer = newBuffer;
|
|
self->BufferSize = newBufferSize;
|
|
} else {
|
|
return 0;
|
|
}
|
|
} else if (status >= 0) {
|
|
/* The query succeeded. Initialize traversal of the process list. */
|
|
self->CurrentInfo = (PSYSTEM_PROCESS_INFORMATION)self->Buffer;
|
|
return 1;
|
|
} else {
|
|
/* The query failed. */
|
|
return 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
static int kwsysProcess_List__Next_NT4(kwsysProcess_List* self)
|
|
{
|
|
if (self->CurrentInfo) {
|
|
if (self->CurrentInfo->NextEntryDelta > 0) {
|
|
self->CurrentInfo = ((PSYSTEM_PROCESS_INFORMATION)(
|
|
(char*)self->CurrentInfo + self->CurrentInfo->NextEntryDelta));
|
|
return 1;
|
|
}
|
|
self->CurrentInfo = 0;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int kwsysProcess_List__GetProcessId_NT4(kwsysProcess_List* self)
|
|
{
|
|
return self->CurrentInfo ? self->CurrentInfo->ProcessId : -1;
|
|
}
|
|
|
|
static int kwsysProcess_List__GetParentId_NT4(kwsysProcess_List* self)
|
|
{
|
|
return self->CurrentInfo ? self->CurrentInfo->InheritedFromProcessId : -1;
|
|
}
|
|
|
|
static int kwsysProcess_List__New_Snapshot(kwsysProcess_List* self)
|
|
{
|
|
/* Get a handle to the Windows runtime module that should already be
|
|
loaded in this program. This does not actually increment the
|
|
reference count to the module so we do not need to close the
|
|
handle. */
|
|
HMODULE hKernel = GetModuleHandleW(L"kernel32.dll");
|
|
if (hKernel) {
|
|
self->P_CreateToolhelp32Snapshot =
|
|
((CreateToolhelp32SnapshotType)GetProcAddress(
|
|
hKernel, "CreateToolhelp32Snapshot"));
|
|
self->P_Process32First =
|
|
((Process32FirstType)GetProcAddress(hKernel, "Process32First"));
|
|
self->P_Process32Next =
|
|
((Process32NextType)GetProcAddress(hKernel, "Process32Next"));
|
|
}
|
|
return (self->P_CreateToolhelp32Snapshot && self->P_Process32First &&
|
|
self->P_Process32Next)
|
|
? 1
|
|
: 0;
|
|
}
|
|
|
|
static void kwsysProcess_List__Delete_Snapshot(kwsysProcess_List* self)
|
|
{
|
|
if (self->Snapshot) {
|
|
CloseHandle(self->Snapshot);
|
|
}
|
|
}
|
|
|
|
static int kwsysProcess_List__Update_Snapshot(kwsysProcess_List* self)
|
|
{
|
|
if (self->Snapshot) {
|
|
CloseHandle(self->Snapshot);
|
|
}
|
|
if (!(self->Snapshot =
|
|
self->P_CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0))) {
|
|
return 0;
|
|
}
|
|
ZeroMemory(&self->CurrentEntry, sizeof(self->CurrentEntry));
|
|
self->CurrentEntry.dwSize = sizeof(self->CurrentEntry);
|
|
if (!self->P_Process32First(self->Snapshot, &self->CurrentEntry)) {
|
|
CloseHandle(self->Snapshot);
|
|
self->Snapshot = 0;
|
|
return 0;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
static int kwsysProcess_List__Next_Snapshot(kwsysProcess_List* self)
|
|
{
|
|
if (self->Snapshot) {
|
|
if (self->P_Process32Next(self->Snapshot, &self->CurrentEntry)) {
|
|
return 1;
|
|
}
|
|
CloseHandle(self->Snapshot);
|
|
self->Snapshot = 0;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int kwsysProcess_List__GetProcessId_Snapshot(kwsysProcess_List* self)
|
|
{
|
|
return self->Snapshot ? self->CurrentEntry.th32ProcessID : -1;
|
|
}
|
|
|
|
static int kwsysProcess_List__GetParentId_Snapshot(kwsysProcess_List* self)
|
|
{
|
|
return self->Snapshot ? self->CurrentEntry.th32ParentProcessID : -1;
|
|
}
|
|
|
|
static void kwsysProcessKill(DWORD pid)
|
|
{
|
|
HANDLE h = OpenProcess(PROCESS_TERMINATE, 0, pid);
|
|
if (h) {
|
|
TerminateProcess(h, 255);
|
|
WaitForSingleObject(h, INFINITE);
|
|
CloseHandle(h);
|
|
}
|
|
}
|
|
|
|
static void kwsysProcessKillTree(int pid)
|
|
{
|
|
kwsysProcess_List* plist = kwsysProcess_List_New();
|
|
kwsysProcessKill(pid);
|
|
if (plist) {
|
|
do {
|
|
if (kwsysProcess_List_GetCurrentParentId(plist) == pid) {
|
|
int ppid = kwsysProcess_List_GetCurrentProcessId(plist);
|
|
kwsysProcessKillTree(ppid);
|
|
}
|
|
} while (kwsysProcess_List_NextProcess(plist));
|
|
kwsysProcess_List_Delete(plist);
|
|
}
|
|
}
|
|
|
|
static void kwsysProcessDisablePipeThreads(kwsysProcess* cp)
|
|
{
|
|
int i;
|
|
|
|
/* If data were just reported data, release the pipe's thread. */
|
|
if (cp->CurrentIndex < KWSYSPE_PIPE_COUNT) {
|
|
KWSYSPE_DEBUG((stderr, "releasing reader %d\n", cp->CurrentIndex));
|
|
ReleaseSemaphore(cp->Pipe[cp->CurrentIndex].Reader.Go, 1, 0);
|
|
cp->CurrentIndex = KWSYSPE_PIPE_COUNT;
|
|
}
|
|
|
|
/* Wakeup all reading threads that are not on closed pipes. */
|
|
for (i = 0; i < KWSYSPE_PIPE_COUNT; ++i) {
|
|
/* The wakeup threads will write one byte to the pipe write ends.
|
|
If there are no data in the pipe then this is enough to wakeup
|
|
the reading threads. If there are already data in the pipe
|
|
this may block. We cannot use PeekNamedPipe to check whether
|
|
there are data because an outside process might still be
|
|
writing data if we are disowning it. Also, PeekNamedPipe will
|
|
block if checking a pipe on which the reading thread is
|
|
currently calling ReadPipe. Therefore we need a separate
|
|
thread to call WriteFile. If it blocks, that is okay because
|
|
it will unblock when we close the read end and break the pipe
|
|
below. */
|
|
if (cp->Pipe[i].Read) {
|
|
KWSYSPE_DEBUG((stderr, "releasing waker %d\n", i));
|
|
ReleaseSemaphore(cp->Pipe[i].Waker.Go, 1, 0);
|
|
}
|
|
}
|
|
|
|
/* Tell pipe threads to reset until we run another process. */
|
|
while (cp->PipesLeft > 0) {
|
|
/* The waking threads will cause all reading threads to report.
|
|
Wait for the next one and save its index. */
|
|
KWSYSPE_DEBUG((stderr, "waiting for reader\n"));
|
|
WaitForSingleObject(cp->Full, INFINITE);
|
|
cp->CurrentIndex = cp->SharedIndex;
|
|
ReleaseSemaphore(cp->SharedIndexMutex, 1, 0);
|
|
KWSYSPE_DEBUG((stderr, "got reader %d\n", cp->CurrentIndex));
|
|
|
|
/* We are done reading this pipe. Close its read handle. */
|
|
cp->Pipe[cp->CurrentIndex].Closed = 1;
|
|
kwsysProcessCleanupHandle(&cp->Pipe[cp->CurrentIndex].Read);
|
|
--cp->PipesLeft;
|
|
|
|
/* Tell the reading thread we are done with the data. It will
|
|
reset immediately because the pipe is closed. */
|
|
ReleaseSemaphore(cp->Pipe[cp->CurrentIndex].Reader.Go, 1, 0);
|
|
}
|
|
}
|
|
|
|
/* Global set of executing processes for use by the Ctrl handler.
|
|
This global instance will be zero-initialized by the compiler.
|
|
|
|
Note that the console Ctrl handler runs on a background thread and so
|
|
everything it does must be thread safe. Here, we track the hProcess
|
|
HANDLEs directly instead of kwsysProcess instances, so that we don't have
|
|
to make kwsysProcess thread safe. */
|
|
typedef struct kwsysProcessInstance_s
|
|
{
|
|
HANDLE hProcess;
|
|
DWORD dwProcessId;
|
|
int NewProcessGroup; /* Whether the process was created in a new group. */
|
|
} kwsysProcessInstance;
|
|
|
|
typedef struct kwsysProcessInstances_s
|
|
{
|
|
/* Whether we have initialized key fields below, like critical sections. */
|
|
int Initialized;
|
|
|
|
/* Ctrl handler runs on a different thread, so we must sync access. */
|
|
CRITICAL_SECTION Lock;
|
|
|
|
int Exiting;
|
|
size_t Count;
|
|
size_t Size;
|
|
kwsysProcessInstance* Processes;
|
|
} kwsysProcessInstances;
|
|
static kwsysProcessInstances kwsysProcesses;
|
|
|
|
/* Initialize critial section and set up console Ctrl handler. You MUST call
|
|
this before using any other kwsysProcesses* functions below. */
|
|
static int kwsysProcessesInitialize(void)
|
|
{
|
|
/* Initialize everything if not done already. */
|
|
if (!kwsysProcesses.Initialized) {
|
|
InitializeCriticalSection(&kwsysProcesses.Lock);
|
|
|
|
/* Set up console ctrl handler. */
|
|
if (!SetConsoleCtrlHandler(kwsysCtrlHandler, TRUE)) {
|
|
return 0;
|
|
}
|
|
|
|
kwsysProcesses.Initialized = 1;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
/* The Ctrl handler waits on the global list of processes. To prevent an
|
|
orphaned process, do not create a new process if the Ctrl handler is
|
|
already running. Do so by using this function to check if it is ok to
|
|
create a process. */
|
|
static int kwsysTryEnterCreateProcessSection(void)
|
|
{
|
|
/* Enter main critical section; this means creating a process and the Ctrl
|
|
handler are mutually exclusive. */
|
|
EnterCriticalSection(&kwsysProcesses.Lock);
|
|
/* Indicate to the caller if they can create a process. */
|
|
if (kwsysProcesses.Exiting) {
|
|
LeaveCriticalSection(&kwsysProcesses.Lock);
|
|
return 0;
|
|
} else {
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
/* Matching function on successful kwsysTryEnterCreateProcessSection return.
|
|
Make sure you called kwsysProcessesAdd if applicable before calling this.*/
|
|
static void kwsysLeaveCreateProcessSection(void)
|
|
{
|
|
LeaveCriticalSection(&kwsysProcesses.Lock);
|
|
}
|
|
|
|
/* Add new process to global process list. The Ctrl handler will wait for
|
|
the process to exit before it returns. Do not close the process handle
|
|
until after calling kwsysProcessesRemove. The newProcessGroup parameter
|
|
must be set if the process was created with CREATE_NEW_PROCESS_GROUP. */
|
|
static int kwsysProcessesAdd(HANDLE hProcess, DWORD dwProcessid,
|
|
int newProcessGroup)
|
|
{
|
|
if (!kwsysProcessesInitialize() || !hProcess ||
|
|
hProcess == INVALID_HANDLE_VALUE) {
|
|
return 0;
|
|
}
|
|
|
|
/* Enter the critical section. */
|
|
EnterCriticalSection(&kwsysProcesses.Lock);
|
|
|
|
/* Make sure there is enough space for the new process handle. */
|
|
if (kwsysProcesses.Count == kwsysProcesses.Size) {
|
|
size_t newSize;
|
|
kwsysProcessInstance* newArray;
|
|
/* Start with enough space for a small number of process handles
|
|
and double the size each time more is needed. */
|
|
newSize = kwsysProcesses.Size ? kwsysProcesses.Size * 2 : 4;
|
|
|
|
/* Try allocating the new block of memory. */
|
|
if ((newArray = (kwsysProcessInstance*)malloc(
|
|
newSize * sizeof(kwsysProcessInstance)))) {
|
|
/* Copy the old process handles to the new memory. */
|
|
if (kwsysProcesses.Count > 0) {
|
|
memcpy(newArray, kwsysProcesses.Processes,
|
|
kwsysProcesses.Count * sizeof(kwsysProcessInstance));
|
|
}
|
|
} else {
|
|
/* Failed to allocate memory for the new process handle set. */
|
|
LeaveCriticalSection(&kwsysProcesses.Lock);
|
|
return 0;
|
|
}
|
|
|
|
/* Free original array. */
|
|
free(kwsysProcesses.Processes);
|
|
|
|
/* Update original structure with new allocation. */
|
|
kwsysProcesses.Size = newSize;
|
|
kwsysProcesses.Processes = newArray;
|
|
}
|
|
|
|
/* Append the new process information to the set. */
|
|
kwsysProcesses.Processes[kwsysProcesses.Count].hProcess = hProcess;
|
|
kwsysProcesses.Processes[kwsysProcesses.Count].dwProcessId = dwProcessid;
|
|
kwsysProcesses.Processes[kwsysProcesses.Count++].NewProcessGroup =
|
|
newProcessGroup;
|
|
|
|
/* Leave critical section and return success. */
|
|
LeaveCriticalSection(&kwsysProcesses.Lock);
|
|
|
|
return 1;
|
|
}
|
|
|
|
/* Removes process to global process list. */
|
|
static void kwsysProcessesRemove(HANDLE hProcess)
|
|
{
|
|
size_t i;
|
|
|
|
if (!hProcess || hProcess == INVALID_HANDLE_VALUE) {
|
|
return;
|
|
}
|
|
|
|
EnterCriticalSection(&kwsysProcesses.Lock);
|
|
|
|
/* Find the given process in the set. */
|
|
for (i = 0; i < kwsysProcesses.Count; ++i) {
|
|
if (kwsysProcesses.Processes[i].hProcess == hProcess) {
|
|
break;
|
|
}
|
|
}
|
|
if (i < kwsysProcesses.Count) {
|
|
/* Found it! Remove the process from the set. */
|
|
--kwsysProcesses.Count;
|
|
for (; i < kwsysProcesses.Count; ++i) {
|
|
kwsysProcesses.Processes[i] = kwsysProcesses.Processes[i + 1];
|
|
}
|
|
|
|
/* If this was the last process, free the array. */
|
|
if (kwsysProcesses.Count == 0) {
|
|
kwsysProcesses.Size = 0;
|
|
free(kwsysProcesses.Processes);
|
|
kwsysProcesses.Processes = 0;
|
|
}
|
|
}
|
|
|
|
LeaveCriticalSection(&kwsysProcesses.Lock);
|
|
}
|
|
|
|
static BOOL WINAPI kwsysCtrlHandler(DWORD dwCtrlType)
|
|
{
|
|
size_t i;
|
|
(void)dwCtrlType;
|
|
/* Enter critical section. */
|
|
EnterCriticalSection(&kwsysProcesses.Lock);
|
|
|
|
/* Set flag indicating that we are exiting. */
|
|
kwsysProcesses.Exiting = 1;
|
|
|
|
/* If some of our processes were created in a new process group, we must
|
|
manually interrupt them. They won't otherwise receive a Ctrl+C/Break. */
|
|
for (i = 0; i < kwsysProcesses.Count; ++i) {
|
|
if (kwsysProcesses.Processes[i].NewProcessGroup) {
|
|
DWORD groupId = kwsysProcesses.Processes[i].dwProcessId;
|
|
if (groupId) {
|
|
GenerateConsoleCtrlEvent(CTRL_BREAK_EVENT, groupId);
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Wait for each child process to exit. This is the key step that prevents
|
|
us from leaving several orphaned children processes running in the
|
|
background when the user presses Ctrl+C. */
|
|
for (i = 0; i < kwsysProcesses.Count; ++i) {
|
|
WaitForSingleObject(kwsysProcesses.Processes[i].hProcess, INFINITE);
|
|
}
|
|
|
|
/* Leave critical section. */
|
|
LeaveCriticalSection(&kwsysProcesses.Lock);
|
|
|
|
/* Continue on to default Ctrl handler (which calls ExitProcess). */
|
|
return FALSE;
|
|
}
|
|
|
|
void kwsysProcess_ResetStartTime(kwsysProcess* cp)
|
|
{
|
|
if (!cp) {
|
|
return;
|
|
}
|
|
/* Reset start time. */
|
|
cp->StartTime = kwsysProcessTimeGetCurrent();
|
|
}
|