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ENH: change to c code so it can be built with mingw

This commit is contained in:
Bill Hoffman 2004-05-10 12:06:24 -04:00
parent 2c4922f558
commit 9c0411b4f2
3 changed files with 455 additions and 447 deletions
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2
Source/kwsys/CMakeLists.txt
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@ -275,7 +275,7 @@ IF(KWSYS_USE_Process)
${PROJECT_BINARY_DIR}/${KWSYS_NAMESPACE}ProcessFwd9xEnc.c
PROPERTIES GENERATED 1)
SET(KWSYS_H_FILES ${KWSYS_H_FILES} ProcessWin32Kill)
SET(KWSYS_SRCS ${KWSYS_SRCS} ProcessWin32Kill.cxx)
SET(KWSYS_SRCS ${KWSYS_SRCS} ProcessWin32Kill.c)
ELSE(NOT UNIX)
# Use the UNIX implementation.
SET(KWSYS_SRCS ${KWSYS_SRCS} ProcessUNIX.c)

454
Source/kwsys/ProcessWin32Kill.c Normal file
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@ -0,0 +1,454 @@
/*=========================================================================
Program: KWSys - Kitware System Library
Module: $RCSfile$
Copyright (c) Kitware, Inc., Insight Consortium. All rights reserved.
See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notices for more information.
=========================================================================*/
#define KWSYS_IN_PROCESS_C
#include "kwsysPrivate.h"
#include KWSYS_HEADER(ProcessWin32Kill.h)
/* The following process tree kill implementation is taken from
http://www.alexfedotov.com/articles/killproc.asp
It will work only on some versions of windows. Hopefully
I will eventually get some time to do a real implementation of this
for all windows versions. */
#include <windows.h>
#include <tchar.h>
#include <crtdbg.h>
#include <stdio.h>
#include <stdarg.h>
#include <tlhelp32.h>
//---------------------------------------------------------------------------
// KillProcess
//
// Terminates the specified process.
//
// Parameters:
// dwProcessId - identifier of the process to terminate
//
// Returns:
// TRUE, if successful, FALSE - otherwise.
//
static BOOL
WINAPI
KillProcess(
IN DWORD dwProcessId
)
{
HANDLE hProcess;
DWORD dwError;
// first try to obtain handle to the process without the use of any
// additional privileges
hProcess = OpenProcess(PROCESS_TERMINATE, FALSE, dwProcessId);
if (hProcess == NULL)
{
OSVERSIONINFO osvi;
TOKEN_PRIVILEGES Priv, PrivOld;
DWORD cbPriv;
HANDLE hToken;
if (GetLastError() != ERROR_ACCESS_DENIED)
return FALSE;
// determine operating system version
osvi.dwOSVersionInfoSize = sizeof(osvi);
GetVersionEx(&osvi);
// we cannot do anything else if this is not Windows NT
if (osvi.dwPlatformId != VER_PLATFORM_WIN32_NT)
return SetLastError(ERROR_ACCESS_DENIED), FALSE;
// enable SE_DEBUG_NAME privilege and try again
cbPriv = sizeof(PrivOld);
// obtain the token of the current thread
if (!OpenThreadToken(GetCurrentThread(),
TOKEN_QUERY|TOKEN_ADJUST_PRIVILEGES,
FALSE, &hToken))
{
if (GetLastError() != ERROR_NO_TOKEN)
return FALSE;
// revert to the process token
if (!OpenProcessToken(GetCurrentProcess(),
TOKEN_QUERY|TOKEN_ADJUST_PRIVILEGES,
&hToken))
return FALSE;
}
if(!(ANYSIZE_ARRAY > 0))
{
return 0;
}
Priv.PrivilegeCount = 1;
Priv.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
LookupPrivilegeValue(NULL, SE_DEBUG_NAME, &Priv.Privileges[0].Luid);
// try to enable the privilege
if (!AdjustTokenPrivileges(hToken, FALSE, &Priv, sizeof(Priv),
&PrivOld, &cbPriv))
{
dwError = GetLastError();
CloseHandle(hToken);
return SetLastError(dwError), FALSE;
}
if (GetLastError() == ERROR_NOT_ALL_ASSIGNED)
{
// the SE_DEBUG_NAME privilege is not present in the caller's
// token
CloseHandle(hToken);
return SetLastError(ERROR_ACCESS_DENIED), FALSE;
}
// try to open process handle again
hProcess = OpenProcess(PROCESS_TERMINATE, FALSE, dwProcessId);
dwError = GetLastError();
// restore the original state of the privilege
AdjustTokenPrivileges(hToken, FALSE, &PrivOld, sizeof(PrivOld),
NULL, NULL);
CloseHandle(hToken);
if (hProcess == NULL)
{
return SetLastError(FALSE), 0;
}
}
// terminate the process
if (!TerminateProcess(hProcess, (UINT)-1))
{
dwError = GetLastError();
CloseHandle(hProcess);
return SetLastError(dwError), FALSE;
}
CloseHandle(hProcess);
// completed successfully
return TRUE;
}
typedef LONG NTSTATUS;
typedef LONG KPRIORITY;
#define NT_SUCCESS(Status) ((NTSTATUS)(Status) >= 0)
#define STATUS_INFO_LENGTH_MISMATCH ((NTSTATUS)0xC0000004L)
#define SystemProcessesAndThreadsInformation 5
typedef struct _CLIENT_ID {
DWORD UniqueProcess;
DWORD UniqueThread;
} CLIENT_ID;
typedef struct _UNICODE_STRING {
USHORT Length;
USHORT MaximumLength;
PWSTR Buffer;
} UNICODE_STRING;
typedef struct _VM_COUNTERS {
SIZE_T PeakVirtualSize;
SIZE_T VirtualSize;
ULONG PageFaultCount;
SIZE_T PeakWorkingSetSize;
SIZE_T WorkingSetSize;
SIZE_T QuotaPeakPagedPoolUsage;
SIZE_T QuotaPagedPoolUsage;
SIZE_T QuotaPeakNonPagedPoolUsage;
SIZE_T QuotaNonPagedPoolUsage;
SIZE_T PagefileUsage;
SIZE_T PeakPagefileUsage;
} VM_COUNTERS;
typedef struct _SYSTEM_THREADS {
LARGE_INTEGER KernelTime;
LARGE_INTEGER UserTime;
LARGE_INTEGER CreateTime;
ULONG WaitTime;
PVOID StartAddress;
CLIENT_ID ClientId;
KPRIORITY Priority;
KPRIORITY BasePriority;
ULONG ContextSwitchCount;
LONG State;
LONG WaitReason;
} SYSTEM_THREADS, * PSYSTEM_THREADS;
// Note that the size of the SYSTEM_PROCESSES structure is different on
// NT 4 and Win2K, but we don't care about it, since we don't access neither
// IoCounters member nor Threads array
typedef struct _SYSTEM_PROCESSES {
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;
ULONG HandleCount;
ULONG Reserved2[2];
VM_COUNTERS VmCounters;
#if _WIN32_WINNT >= 0x500
IO_COUNTERS IoCounters;
#endif
SYSTEM_THREADS Threads[1];
} SYSTEM_PROCESSES, * PSYSTEM_PROCESSES;
//---------------------------------------------------------------------------
// KillProcessTreeNtHelper
//
// This is a recursive helper function that terminates all the processes
// started by the specified process and them terminates the process itself
//
// Parameters:
// pInfo - processes information
// dwProcessId - identifier of the process to terminate
//
// Returns:
// Win32 error code.
//
static
BOOL
WINAPI
KillProcessTreeNtHelper(
IN PSYSTEM_PROCESSES pInfo,
IN DWORD dwProcessId
)
{
PSYSTEM_PROCESSES p;
if(!pInfo)
{
return 0;
}
p = pInfo;
// kill all children first
for (;;)
{
if (p->InheritedFromProcessId == dwProcessId)
KillProcessTreeNtHelper(pInfo, p->ProcessId);
if (p->NextEntryDelta == 0)
break;
// find the address of the next process structure
p = (PSYSTEM_PROCESSES)(((LPBYTE)p) + p->NextEntryDelta);
}
// kill the process itself
if (!KillProcess(dwProcessId))
return GetLastError();
return ERROR_SUCCESS;
}
//---------------------------------------------------------------------------
// KillProcessTreeWinHelper
//
// This is a recursive helper function that terminates all the processes
// started by the specified process and them terminates the process itself
//
// Parameters:
// dwProcessId - identifier of the process to terminate
//
// Returns:
// Win32 error code.
//
static
BOOL
WINAPI
KillProcessTreeWinHelper(
IN DWORD dwProcessId
)
{
HINSTANCE hKernel;
HANDLE hSnapshot;
PROCESSENTRY32 Entry;
HANDLE (WINAPI * _CreateToolhelp32Snapshot)(DWORD, DWORD);
BOOL (WINAPI * _Process32First)(HANDLE, PROCESSENTRY32 *);
BOOL (WINAPI * _Process32Next)(HANDLE, PROCESSENTRY32 *);
// get handle to KERNEL32.DLL
hKernel = GetModuleHandle(_T("kernel32.dll"));
if(!hKernel)
{
return 0;
}
// locate necessary functions in KERNEL32.DLL
*(FARPROC *)&_CreateToolhelp32Snapshot =
GetProcAddress(hKernel, "CreateToolhelp32Snapshot");
*(FARPROC *)&_Process32First =
GetProcAddress(hKernel, "Process32First");
*(FARPROC *)&_Process32Next =
GetProcAddress(hKernel, "Process32Next");
if (_CreateToolhelp32Snapshot == NULL ||
_Process32First == NULL ||
_Process32Next == NULL)
return ERROR_PROC_NOT_FOUND;
// create a snapshot
hSnapshot = _CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
if (hSnapshot == INVALID_HANDLE_VALUE)
return GetLastError();
Entry.dwSize = sizeof(Entry);
if (!_Process32First(hSnapshot, &Entry))
{
DWORD dwError = GetLastError();
CloseHandle(hSnapshot);
return dwError;
}
// kill all children first
do
{
if (Entry.th32ParentProcessID == dwProcessId)
KillProcessTreeWinHelper(Entry.th32ProcessID);
Entry.dwSize = sizeof(Entry);
}
while (_Process32Next(hSnapshot, &Entry));
CloseHandle(hSnapshot);
// kill the process itself
if (!KillProcess(dwProcessId))
return GetLastError();
return ERROR_SUCCESS;
}
//---------------------------------------------------------------------------
// KillProcessEx
//
// Terminates the specified process and, optionally, all processes started
// from the specified process (the so-called process tree).
//
// Parameters:
// dwProcessId - identifier of the process to terminate
// bTree - specifies whether the entire process tree should be
// terminated
//
// Returns:
// TRUE, if successful, FALSE - otherwise.
//
static BOOL
WINAPI
KillProcessEx(
IN DWORD dwProcessId,
IN BOOL bTree
)
{
OSVERSIONINFO osvi;
DWORD dwError;
HANDLE hHeap;
NTSTATUS Status;
ULONG cbBuffer;
PVOID pBuffer = NULL;
if (!bTree)
return KillProcess(dwProcessId);
// determine operating system version
osvi.dwOSVersionInfoSize = sizeof(osvi);
GetVersionEx(&osvi);
if (osvi.dwPlatformId == VER_PLATFORM_WIN32_NT &&
osvi.dwMajorVersion < 5)
{
HINSTANCE hNtDll;
NTSTATUS (WINAPI * _ZwQuerySystemInformation)(UINT, PVOID, ULONG, PULONG);
// get handle to NTDLL.DLL
hNtDll = GetModuleHandle(_T("ntdll.dll"));
if(!hNtDll)
{
return 0;
}
// find the address of ZwQuerySystemInformation
*(FARPROC *)&_ZwQuerySystemInformation =
GetProcAddress(hNtDll, "ZwQuerySystemInformation");
if (_ZwQuerySystemInformation == NULL)
return SetLastError(ERROR_PROC_NOT_FOUND), 0;
// obtain a handle to the default process heap
hHeap = GetProcessHeap();
cbBuffer = 0x8000;
// it is difficult to say a priory which size of the buffer
// will be enough to retrieve all information, so we start
// with 32K buffer and increase its size until we get the
// information successfully
do
{
pBuffer = HeapAlloc(hHeap, 0, cbBuffer);
if (pBuffer == NULL)
return SetLastError(ERROR_NOT_ENOUGH_MEMORY), FALSE;
Status = _ZwQuerySystemInformation(
SystemProcessesAndThreadsInformation,
pBuffer, cbBuffer, NULL);
if (Status == STATUS_INFO_LENGTH_MISMATCH)
{
HeapFree(hHeap, 0, pBuffer);
cbBuffer *= 2;
}
else if (!NT_SUCCESS(Status))
{
HeapFree(hHeap, 0, pBuffer);
return SetLastError(Status), 0;
}
}
while (Status == STATUS_INFO_LENGTH_MISMATCH);
// call the helper function
dwError = KillProcessTreeNtHelper((PSYSTEM_PROCESSES)pBuffer,
dwProcessId);
HeapFree(hHeap, 0, pBuffer);
}
else
{
// call the helper function
dwError = KillProcessTreeWinHelper(dwProcessId);
}
SetLastError(dwError);
return dwError == ERROR_SUCCESS;
}
int kwsysProcessWin32Kill(int pid)
{
return KillProcessEx(pid, 1)? 1:0;
}

446
Source/kwsys/ProcessWin32Kill.cxx
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@ -1,446 +0,0 @@
/*=========================================================================
Program: KWSys - Kitware System Library
Module: $RCSfile$
Copyright (c) Kitware, Inc., Insight Consortium. All rights reserved.
See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notices for more information.
=========================================================================*/
#define KWSYS_IN_PROCESS_C
#include "kwsysPrivate.h"
#include KWSYS_HEADER(ProcessWin32Kill.h)
/* The following process tree kill implementation is taken from
http://www.alexfedotov.com/articles/killproc.asp
It will work only on some versions of windows. Hopefully
I will eventually get some time to do a real implementation of this
for all windows versions. */
#include <windows.h>
#include <tchar.h>
#include <stdio.h>
#include <stdarg.h>
#include <tlhelp32.h>
//---------------------------------------------------------------------------
// KillProcess
//
// Terminates the specified process.
//
// Parameters:
// dwProcessId - identifier of the process to terminate
//
// Returns:
// TRUE, if successful, FALSE - otherwise.
//
static BOOL
WINAPI
KillProcess(
IN DWORD dwProcessId
)
{
HANDLE hProcess;
DWORD dwError;
// first try to obtain handle to the process without the use of any
// additional privileges
hProcess = OpenProcess(PROCESS_TERMINATE, FALSE, dwProcessId);
if (hProcess == NULL)
{
if (GetLastError() != ERROR_ACCESS_DENIED)
return FALSE;
OSVERSIONINFO osvi;
// determine operating system version
osvi.dwOSVersionInfoSize = sizeof(osvi);
GetVersionEx(&osvi);
// we cannot do anything else if this is not Windows NT
if (osvi.dwPlatformId != VER_PLATFORM_WIN32_NT)
return SetLastError(ERROR_ACCESS_DENIED), FALSE;
// enable SE_DEBUG_NAME privilege and try again
TOKEN_PRIVILEGES Priv, PrivOld;
DWORD cbPriv = sizeof(PrivOld);
HANDLE hToken;
// obtain the token of the current thread
if (!OpenThreadToken(GetCurrentThread(),
TOKEN_QUERY|TOKEN_ADJUST_PRIVILEGES,
FALSE, &hToken))
{
if (GetLastError() != ERROR_NO_TOKEN)
return FALSE;
// revert to the process token
if (!OpenProcessToken(GetCurrentProcess(),
TOKEN_QUERY|TOKEN_ADJUST_PRIVILEGES,
&hToken))
return FALSE;
}
if(!(ANYSIZE_ARRAY > 0))
{
return 0;
}
Priv.PrivilegeCount = 1;
Priv.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
LookupPrivilegeValue(NULL, SE_DEBUG_NAME, &Priv.Privileges[0].Luid);
// try to enable the privilege
if (!AdjustTokenPrivileges(hToken, FALSE, &Priv, sizeof(Priv),
&PrivOld, &cbPriv))
{
dwError = GetLastError();
CloseHandle(hToken);
return SetLastError(dwError), FALSE;
}
if (GetLastError() == ERROR_NOT_ALL_ASSIGNED)
{
// the SE_DEBUG_NAME privilege is not present in the caller's
// token
CloseHandle(hToken);
return SetLastError(ERROR_ACCESS_DENIED), FALSE;
}
// try to open process handle again
hProcess = OpenProcess(PROCESS_TERMINATE, FALSE, dwProcessId);
dwError = GetLastError();
// restore the original state of the privilege
AdjustTokenPrivileges(hToken, FALSE, &PrivOld, sizeof(PrivOld),
NULL, NULL);
CloseHandle(hToken);
if (hProcess == NULL)
return SetLastError(FALSE), NULL;
}
// terminate the process
if (!TerminateProcess(hProcess, (UINT)-1))
{
dwError = GetLastError();
CloseHandle(hProcess);
return SetLastError(dwError), FALSE;
}
CloseHandle(hProcess);
// completed successfully
return TRUE;
}
typedef LONG NTSTATUS;
typedef LONG KPRIORITY;
#define NT_SUCCESS(Status) ((NTSTATUS)(Status) >= 0)
#define STATUS_INFO_LENGTH_MISMATCH ((NTSTATUS)0xC0000004L)
#define SystemProcessesAndThreadsInformation 5
typedef struct _CLIENT_ID {
DWORD UniqueProcess;
DWORD UniqueThread;
} CLIENT_ID;
typedef struct _UNICODE_STRING {
USHORT Length;
USHORT MaximumLength;
PWSTR Buffer;
} UNICODE_STRING;
typedef struct _VM_COUNTERS {
SIZE_T PeakVirtualSize;
SIZE_T VirtualSize;
ULONG PageFaultCount;
SIZE_T PeakWorkingSetSize;
SIZE_T WorkingSetSize;
SIZE_T QuotaPeakPagedPoolUsage;
SIZE_T QuotaPagedPoolUsage;
SIZE_T QuotaPeakNonPagedPoolUsage;
SIZE_T QuotaNonPagedPoolUsage;
SIZE_T PagefileUsage;
SIZE_T PeakPagefileUsage;
} VM_COUNTERS;
typedef struct _SYSTEM_THREADS {
LARGE_INTEGER KernelTime;
LARGE_INTEGER UserTime;
LARGE_INTEGER CreateTime;
ULONG WaitTime;
PVOID StartAddress;
CLIENT_ID ClientId;
KPRIORITY Priority;
KPRIORITY BasePriority;
ULONG ContextSwitchCount;
LONG State;
LONG WaitReason;
} SYSTEM_THREADS, * PSYSTEM_THREADS;
// Note that the size of the SYSTEM_PROCESSES structure is different on
// NT 4 and Win2K, but we don't care about it, since we don't access neither
// IoCounters member nor Threads array
typedef struct _SYSTEM_PROCESSES {
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;
ULONG HandleCount;
ULONG Reserved2[2];
VM_COUNTERS VmCounters;
#if _WIN32_WINNT >= 0x500
IO_COUNTERS IoCounters;
#endif
SYSTEM_THREADS Threads[1];
} SYSTEM_PROCESSES, * PSYSTEM_PROCESSES;
//---------------------------------------------------------------------------
// KillProcessTreeNtHelper
//
// This is a recursive helper function that terminates all the processes
// started by the specified process and them terminates the process itself
//
// Parameters:
// pInfo - processes information
// dwProcessId - identifier of the process to terminate
//
// Returns:
// Win32 error code.
//
static
BOOL
WINAPI
KillProcessTreeNtHelper(
IN PSYSTEM_PROCESSES pInfo,
IN DWORD dwProcessId
)
{
if(!pInfo)
{
return 0;
}
PSYSTEM_PROCESSES p = pInfo;
// kill all children first
for (;;)
{
if (p->InheritedFromProcessId == dwProcessId)
KillProcessTreeNtHelper(pInfo, p->ProcessId);
if (p->NextEntryDelta == 0)
break;
// find the address of the next process structure
p = (PSYSTEM_PROCESSES)(((LPBYTE)p) + p->NextEntryDelta);
}
// kill the process itself
if (!KillProcess(dwProcessId))
return GetLastError();
return ERROR_SUCCESS;
}
//---------------------------------------------------------------------------
// KillProcessTreeWinHelper
//
// This is a recursive helper function that terminates all the processes
// started by the specified process and them terminates the process itself
//
// Parameters:
// dwProcessId - identifier of the process to terminate
//
// Returns:
// Win32 error code.
//
static
BOOL
WINAPI
KillProcessTreeWinHelper(
IN DWORD dwProcessId
)
{
HINSTANCE hKernel;
HANDLE (WINAPI * _CreateToolhelp32Snapshot)(DWORD, DWORD);
BOOL (WINAPI * _Process32First)(HANDLE, PROCESSENTRY32 *);
BOOL (WINAPI * _Process32Next)(HANDLE, PROCESSENTRY32 *);
// get handle to KERNEL32.DLL
hKernel = GetModuleHandle(_T("kernel32.dll"));
if(!hKernel)
{
return 0;
}
// locate necessary functions in KERNEL32.DLL
*(FARPROC *)&_CreateToolhelp32Snapshot =
GetProcAddress(hKernel, "CreateToolhelp32Snapshot");
*(FARPROC *)&_Process32First =
GetProcAddress(hKernel, "Process32First");
*(FARPROC *)&_Process32Next =
GetProcAddress(hKernel, "Process32Next");
if (_CreateToolhelp32Snapshot == NULL ||
_Process32First == NULL ||
_Process32Next == NULL)
return ERROR_PROC_NOT_FOUND;
HANDLE hSnapshot;
PROCESSENTRY32 Entry;
// create a snapshot
hSnapshot = _CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
if (hSnapshot == INVALID_HANDLE_VALUE)
return GetLastError();
Entry.dwSize = sizeof(Entry);
if (!_Process32First(hSnapshot, &Entry))
{
DWORD dwError = GetLastError();
CloseHandle(hSnapshot);
return dwError;
}
// kill all children first
do
{
if (Entry.th32ParentProcessID == dwProcessId)
KillProcessTreeWinHelper(Entry.th32ProcessID);
Entry.dwSize = sizeof(Entry);
}
while (_Process32Next(hSnapshot, &Entry));
CloseHandle(hSnapshot);
// kill the process itself
if (!KillProcess(dwProcessId))
return GetLastError();
return ERROR_SUCCESS;
}
//---------------------------------------------------------------------------
// KillProcessEx
//
// Terminates the specified process and, optionally, all processes started
// from the specified process (the so-called process tree).
//
// Parameters:
// dwProcessId - identifier of the process to terminate
// bTree - specifies whether the entire process tree should be
// terminated
//
// Returns:
// TRUE, if successful, FALSE - otherwise.
//
static BOOL
WINAPI
KillProcessEx(
IN DWORD dwProcessId,
IN BOOL bTree
)
{
if (!bTree)
return KillProcess(dwProcessId);
OSVERSIONINFO osvi;
DWORD dwError;
// determine operating system version
osvi.dwOSVersionInfoSize = sizeof(osvi);
GetVersionEx(&osvi);
if (osvi.dwPlatformId == VER_PLATFORM_WIN32_NT &&
osvi.dwMajorVersion < 5)
{
HINSTANCE hNtDll;
NTSTATUS (WINAPI * _ZwQuerySystemInformation)(UINT, PVOID, ULONG, PULONG);
// get handle to NTDLL.DLL
hNtDll = GetModuleHandle(_T("ntdll.dll"));
if(!hNtDll)
{
return 0;
}
// find the address of ZwQuerySystemInformation
*(FARPROC *)&_ZwQuerySystemInformation =
GetProcAddress(hNtDll, "ZwQuerySystemInformation");
if (_ZwQuerySystemInformation == NULL)
return SetLastError(ERROR_PROC_NOT_FOUND), NULL;
// obtain a handle to the default process heap
HANDLE hHeap = GetProcessHeap();
NTSTATUS Status;
ULONG cbBuffer = 0x8000;
PVOID pBuffer = NULL;
// it is difficult to say a priory which size of the buffer
// will be enough to retrieve all information, so we start
// with 32K buffer and increase its size until we get the
// information successfully
do
{
pBuffer = HeapAlloc(hHeap, 0, cbBuffer);
if (pBuffer == NULL)
return SetLastError(ERROR_NOT_ENOUGH_MEMORY), FALSE;
Status = _ZwQuerySystemInformation(
SystemProcessesAndThreadsInformation,
pBuffer, cbBuffer, NULL);
if (Status == STATUS_INFO_LENGTH_MISMATCH)
{
HeapFree(hHeap, 0, pBuffer);
cbBuffer *= 2;
}
else if (!NT_SUCCESS(Status))
{
HeapFree(hHeap, 0, pBuffer);
return SetLastError(Status), NULL;
}
}
while (Status == STATUS_INFO_LENGTH_MISMATCH);
// call the helper function
dwError = KillProcessTreeNtHelper((PSYSTEM_PROCESSES)pBuffer,
dwProcessId);
HeapFree(hHeap, 0, pBuffer);
}
else
{
// call the helper function
dwError = KillProcessTreeWinHelper(dwProcessId);
}
SetLastError(dwError);
return dwError == ERROR_SUCCESS;
}
extern "C" {
int kwsysProcessWin32Kill(int pid)
{
return KillProcessEx(pid, 1)? 1:0;
}
}