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Sweden-Number/scheduler/process.c

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/*
* Win32 processes
*
* Copyright 1996, 1998 Alexandre Julliard
*/
#include <assert.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "process.h"
#include "module.h"
#include "neexe.h"
#include "file.h"
#include "global.h"
#include "heap.h"
#include "task.h"
#include "ldt.h"
#include "syslevel.h"
#include "thread.h"
#include "winerror.h"
#include "pe_image.h"
#include "task.h"
#include "server.h"
#include "debug.h"
/* The initial process PDB */
static PDB initial_pdb;
static PDB *PROCESS_First = &initial_pdb;
/***********************************************************************
* PROCESS_Current
*/
PDB *PROCESS_Current(void)
{
return THREAD_Current()->process;
}
/***********************************************************************
* PROCESS_Initial
*
* FIXME: This works only while running all processes in the same
* address space (or, at least, the initial process is mapped
* into all address spaces as is KERNEL32 in Windows 95)
*
*/
PDB *PROCESS_Initial(void)
{
return &initial_pdb;
}
/***********************************************************************
* PROCESS_QueryInfo
*
* Retrieve information about a process
*/
static BOOL PROCESS_QueryInfo( HANDLE handle,
struct get_process_info_reply *reply )
{
struct get_process_info_request req;
req.handle = handle;
CLIENT_SendRequest( REQ_GET_PROCESS_INFO, -1, 1, &req, sizeof(req) );
return !CLIENT_WaitSimpleReply( reply, sizeof(*reply), NULL );
}
/***********************************************************************
* PROCESS_IsCurrent
*
* Check if a handle is to the current process
*/
BOOL PROCESS_IsCurrent( HANDLE handle )
{
struct get_process_info_reply reply;
return (PROCESS_QueryInfo( handle, &reply ) &&
(reply.pid == PROCESS_Current()->server_pid));
}
/***********************************************************************
* PROCESS_IdToPDB
*
* Convert a process id to a PDB, making sure it is valid.
*/
PDB *PROCESS_IdToPDB( DWORD id )
{
PDB *pdb;
if (!id) return PROCESS_Current();
pdb = PROCESS_First;
while (pdb)
{
if ((DWORD)pdb->server_pid == id) return pdb;
pdb = pdb->next;
}
SetLastError( ERROR_INVALID_PARAMETER );
return NULL;
}
/***********************************************************************
* PROCESS_BuildEnvDB
*
* Build the env DB for the initial process
*/
static BOOL PROCESS_BuildEnvDB( PDB *pdb )
{
/* Allocate the env DB (FIXME: should not be on the system heap) */
if (!(pdb->env_db = HeapAlloc(SystemHeap,HEAP_ZERO_MEMORY,sizeof(ENVDB))))
return FALSE;
InitializeCriticalSection( &pdb->env_db->section );
/* Allocate startup info */
if (!(pdb->env_db->startup_info =
HeapAlloc( SystemHeap, HEAP_ZERO_MEMORY, sizeof(STARTUPINFOA) )))
return FALSE;
/* Allocate the standard handles */
pdb->env_db->hStdin = FILE_DupUnixHandle( 0, GENERIC_READ );
pdb->env_db->hStdout = FILE_DupUnixHandle( 1, GENERIC_WRITE );
pdb->env_db->hStderr = FILE_DupUnixHandle( 2, GENERIC_WRITE );
/* Build the command-line */
pdb->env_db->cmd_line = HEAP_strdupA( SystemHeap, 0, "kernel32" );
/* Build the environment strings */
return ENV_BuildEnvironment( pdb );
}
/***********************************************************************
* PROCESS_InheritEnvDB
*/
static BOOL PROCESS_InheritEnvDB( PDB *pdb, LPCSTR cmd_line, LPCSTR env,
BOOL inherit_handles, STARTUPINFOA *startup )
{
if (!(pdb->env_db = HeapAlloc(pdb->heap, HEAP_ZERO_MEMORY, sizeof(ENVDB))))
return FALSE;
InitializeCriticalSection( &pdb->env_db->section );
/* Copy the parent environment */
if (!ENV_InheritEnvironment( pdb, env )) return FALSE;
/* Copy the command line */
if (!(pdb->env_db->cmd_line = HEAP_strdupA( pdb->heap, 0, cmd_line )))
return FALSE;
/* Remember startup info */
if (!(pdb->env_db->startup_info =
HeapAlloc( pdb->heap, HEAP_ZERO_MEMORY, sizeof(STARTUPINFOA) )))
return FALSE;
*pdb->env_db->startup_info = *startup;
/* Inherit the standard handles */
if (pdb->env_db->startup_info->dwFlags & STARTF_USESTDHANDLES)
{
pdb->env_db->hStdin = pdb->env_db->startup_info->hStdInput;
pdb->env_db->hStdout = pdb->env_db->startup_info->hStdOutput;
pdb->env_db->hStderr = pdb->env_db->startup_info->hStdError;
}
else if (inherit_handles)
{
pdb->env_db->hStdin = pdb->parent->env_db->hStdin;
pdb->env_db->hStdout = pdb->parent->env_db->hStdout;
pdb->env_db->hStderr = pdb->parent->env_db->hStderr;
}
/* else will be done later on in PROCESS_Create */
return TRUE;
}
/***********************************************************************
* PROCESS_FreePDB
*
* Free a PDB and all associated storage.
*/
void PROCESS_FreePDB( PDB *pdb )
{
PDB **pptr = &PROCESS_First;
ENV_FreeEnvironment( pdb );
while (*pptr && (*pptr != pdb)) pptr = &(*pptr)->next;
if (*pptr) *pptr = pdb->next;
if (pdb->heap && (pdb->heap != pdb->system_heap)) HeapDestroy( pdb->heap );
DeleteCriticalSection( &pdb->crit_section );
HeapFree( SystemHeap, 0, pdb );
}
/***********************************************************************
* PROCESS_CreatePDB
*
* Allocate and fill a PDB structure.
* Runs in the context of the parent process.
*/
static PDB *PROCESS_CreatePDB( PDB *parent, BOOL inherit )
{
PDB *pdb = HeapAlloc( SystemHeap, HEAP_ZERO_MEMORY, sizeof(PDB) );
if (!pdb) return NULL;
pdb->exit_code = 0x103; /* STILL_ACTIVE */
pdb->threads = 1;
pdb->running_threads = 1;
pdb->ring0_threads = 1;
pdb->system_heap = SystemHeap;
pdb->parent = parent;
pdb->group = pdb;
pdb->priority = 8; /* Normal */
pdb->heap = pdb->system_heap; /* will be changed later on */
pdb->next = PROCESS_First;
PROCESS_First = pdb;
return pdb;
}
/***********************************************************************
* PROCESS_FinishCreatePDB
*
* Second part of CreatePDB
*/
static BOOL PROCESS_FinishCreatePDB( PDB *pdb )
{
InitializeCriticalSection( &pdb->crit_section );
/* Allocate the event */
if (!(pdb->load_done_evt = CreateEventA( NULL, TRUE, FALSE, NULL )))
return FALSE;
return TRUE;
}
/***********************************************************************
* PROCESS_Init
*/
BOOL PROCESS_Init(void)
{
THDB *thdb;
/* Fill the initial process structure */
initial_pdb.exit_code = 0x103; /* STILL_ACTIVE */
initial_pdb.threads = 1;
initial_pdb.running_threads = 1;
initial_pdb.ring0_threads = 1;
initial_pdb.group = &initial_pdb;
initial_pdb.priority = 8; /* Normal */
/* Initialize virtual memory management */
if (!VIRTUAL_Init()) return FALSE;
/* Create the initial thread structure */
if (!(thdb = THREAD_CreateInitialThread( &initial_pdb ))) return FALSE;
/* Remember TEB selector of initial process for emergency use */
SYSLEVEL_EmergencyTeb = thdb->teb_sel;
/* Create the system heap */
if (!(SystemHeap = HeapCreate( HEAP_GROWABLE, 0x10000, 0 ))) return FALSE;
initial_pdb.system_heap = initial_pdb.heap = SystemHeap;
/* Create the environment DB of the first process */
if (!PROCESS_BuildEnvDB( &initial_pdb )) return FALSE;
/* Initialize the first thread */
if (CLIENT_InitThread()) return FALSE;
if (!PROCESS_FinishCreatePDB( &initial_pdb )) return FALSE;
/* Create the SEGPTR heap */
if (!(SegptrHeap = HeapCreate( HEAP_WINE_SEGPTR, 0, 0 ))) return FALSE;
return TRUE;
}
/***********************************************************************
* PROCESS_Create
*
* Create a new process database and associated info.
*/
PDB *PROCESS_Create( NE_MODULE *pModule, LPCSTR cmd_line, LPCSTR env,
HINSTANCE16 hInstance, HINSTANCE16 hPrevInstance,
BOOL inherit, STARTUPINFOA *startup,
PROCESS_INFORMATION *info )
{
DWORD size, commit;
int server_thandle, server_phandle;
UINT cmdShow = 0;
THDB *thdb = NULL;
PDB *parent = PROCESS_Current();
PDB *pdb = PROCESS_CreatePDB( parent, inherit );
if (!pdb) return NULL;
info->hThread = info->hProcess = INVALID_HANDLE_VALUE;
if (!PROCESS_FinishCreatePDB( pdb )) goto error;
/* Create the heap */
if (pModule->module32)
{
size = PE_HEADER(pModule->module32)->OptionalHeader.SizeOfHeapReserve;
commit = PE_HEADER(pModule->module32)->OptionalHeader.SizeOfHeapCommit;
}
else
{
size = 0x10000;
commit = 0;
pdb->flags |= PDB32_WIN16_PROC; /* This is a Win16 process */
}
if (!(pdb->heap = HeapCreate( HEAP_GROWABLE, size, commit ))) goto error;
pdb->heap_list = pdb->heap;
/* Inherit the env DB from the parent */
if (!PROCESS_InheritEnvDB( pdb, cmd_line, env, inherit, startup )) goto error;
/* Create the main thread */
if (pModule->module32)
size = PE_HEADER(pModule->module32)->OptionalHeader.SizeOfStackReserve;
else
size = 0;
if (!(thdb = THREAD_Create( pdb, size, hInstance == 0,
&server_thandle, &server_phandle, NULL, NULL )))
goto error;
info->hThread = server_thandle;
info->hProcess = server_phandle;
info->dwProcessId = (DWORD)pdb->server_pid;
info->dwThreadId = (DWORD)thdb->server_tid;
/* Duplicate the standard handles */
if ((!(pdb->env_db->startup_info->dwFlags & STARTF_USESTDHANDLES)) && !inherit)
{
DuplicateHandle( GetCurrentProcess(), pdb->parent->env_db->hStdin,
info->hProcess, &pdb->env_db->hStdin, 0, TRUE, DUPLICATE_SAME_ACCESS );
DuplicateHandle( GetCurrentProcess(), pdb->parent->env_db->hStdout,
info->hProcess, &pdb->env_db->hStdout, 0, TRUE, DUPLICATE_SAME_ACCESS );
DuplicateHandle( GetCurrentProcess(), pdb->parent->env_db->hStderr,
info->hProcess, &pdb->env_db->hStderr, 0, TRUE, DUPLICATE_SAME_ACCESS );
}
/* Create a Win16 task for this process */
if (startup->dwFlags & STARTF_USESHOWWINDOW)
cmdShow = startup->wShowWindow;
if ( !TASK_Create( thdb, pModule, hInstance, hPrevInstance, cmdShow) )
goto error;
/* Map system DLLs into this process (from initial process) */
/* FIXME: this is a hack */
pdb->modref_list = PROCESS_Initial()->modref_list;
return pdb;
error:
if (info->hThread != INVALID_HANDLE_VALUE) CloseHandle( info->hThread );
if (info->hProcess != INVALID_HANDLE_VALUE) CloseHandle( info->hProcess );
PROCESS_FreePDB( pdb );
return NULL;
}
/***********************************************************************
* ExitProcess (KERNEL32.100)
*/
void WINAPI ExitProcess( DWORD status )
{
PDB *pdb = PROCESS_Current();
TDB *pTask = (TDB *)GlobalLock16( pdb->task );
if ( pTask ) pTask->nEvents++;
if ( pTask && pTask->thdb != THREAD_Current() )
ExitThread( status );
/* FIXME: should kill all running threads of this process */
pdb->exit_code = status;
FreeConsole();
__RESTORE_ES; /* Necessary for Pietrek's showseh example program */
TASK_KillCurrentTask( status );
}
/******************************************************************************
* TerminateProcess (KERNEL32.684)
*/
BOOL WINAPI TerminateProcess( HANDLE handle, DWORD exit_code )
{
struct terminate_process_request req;
req.handle = handle;
req.exit_code = exit_code;
CLIENT_SendRequest( REQ_TERMINATE_PROCESS, -1, 1, &req, sizeof(req) );
return !CLIENT_WaitReply( NULL, NULL, 0 );
}
/***********************************************************************
* GetCurrentProcess (KERNEL32.198)
*/
HANDLE WINAPI GetCurrentProcess(void)
{
return CURRENT_PROCESS_PSEUDOHANDLE;
}
/*********************************************************************
* OpenProcess (KERNEL32.543)
*/
HANDLE WINAPI OpenProcess( DWORD access, BOOL inherit, DWORD id )
{
struct open_process_request req;
struct open_process_reply reply;
req.pid = (void *)id;
req.access = access;
req.inherit = inherit;
CLIENT_SendRequest( REQ_OPEN_PROCESS, -1, 1, &req, sizeof(req) );
if (CLIENT_WaitSimpleReply( &reply, sizeof(reply), NULL )) return 0;
return reply.handle;
}
/***********************************************************************
* GetCurrentProcessId (KERNEL32.199)
*/
DWORD WINAPI GetCurrentProcessId(void)
{
return (DWORD)PROCESS_Current()->server_pid;
}
/***********************************************************************
* GetProcessHeap (KERNEL32.259)
*/
HANDLE WINAPI GetProcessHeap(void)
{
PDB *pdb = PROCESS_Current();
return pdb->heap ? pdb->heap : SystemHeap;
}
/***********************************************************************
* GetThreadLocale (KERNEL32.295)
*/
LCID WINAPI GetThreadLocale(void)
{
return PROCESS_Current()->locale;
}
/***********************************************************************
* SetPriorityClass (KERNEL32.503)
*/
BOOL WINAPI SetPriorityClass( HANDLE hprocess, DWORD priorityclass )
{
struct set_process_info_request req;
req.handle = hprocess;
req.priority = priorityclass;
req.mask = SET_PROCESS_INFO_PRIORITY;
CLIENT_SendRequest( REQ_SET_PROCESS_INFO, -1, 1, &req, sizeof(req) );
return !CLIENT_WaitReply( NULL, NULL, 0 );
}
/***********************************************************************
* GetPriorityClass (KERNEL32.250)
*/
DWORD WINAPI GetPriorityClass(HANDLE hprocess)
{
struct get_process_info_reply reply;
if (!PROCESS_QueryInfo( hprocess, &reply )) return 0;
return reply.priority;
}
/***********************************************************************
* SetProcessAffinityMask (KERNEL32.662)
*/
BOOL WINAPI SetProcessAffinityMask( HANDLE hProcess, DWORD affmask )
{
struct set_process_info_request req;
req.handle = hProcess;
req.affinity = affmask;
req.mask = SET_PROCESS_INFO_AFFINITY;
CLIENT_SendRequest( REQ_SET_PROCESS_INFO, -1, 1, &req, sizeof(req) );
return !CLIENT_WaitReply( NULL, NULL, 0 );
}
/**********************************************************************
* GetProcessAffinityMask (KERNEL32.373)
*/
BOOL WINAPI GetProcessAffinityMask( HANDLE hProcess,
LPDWORD lpProcessAffinityMask,
LPDWORD lpSystemAffinityMask )
{
struct get_process_info_reply reply;
if (!PROCESS_QueryInfo( hProcess, &reply )) return FALSE;
if (lpProcessAffinityMask) *lpProcessAffinityMask = reply.process_affinity;
if (lpSystemAffinityMask) *lpSystemAffinityMask = reply.system_affinity;
return TRUE;
}
/***********************************************************************
* GetStdHandle (KERNEL32.276)
*/
HANDLE WINAPI GetStdHandle( DWORD std_handle )
{
PDB *pdb = PROCESS_Current();
switch(std_handle)
{
case STD_INPUT_HANDLE: return pdb->env_db->hStdin;
case STD_OUTPUT_HANDLE: return pdb->env_db->hStdout;
case STD_ERROR_HANDLE: return pdb->env_db->hStderr;
}
SetLastError( ERROR_INVALID_PARAMETER );
return INVALID_HANDLE_VALUE;
}
/***********************************************************************
* SetStdHandle (KERNEL32.506)
*/
BOOL WINAPI SetStdHandle( DWORD std_handle, HANDLE handle )
{
PDB *pdb = PROCESS_Current();
/* FIXME: should we close the previous handle? */
switch(std_handle)
{
case STD_INPUT_HANDLE:
pdb->env_db->hStdin = handle;
return TRUE;
case STD_OUTPUT_HANDLE:
pdb->env_db->hStdout = handle;
return TRUE;
case STD_ERROR_HANDLE:
pdb->env_db->hStderr = handle;
return TRUE;
}
SetLastError( ERROR_INVALID_PARAMETER );
return FALSE;
}
/***********************************************************************
* GetProcessVersion (KERNEL32)
*/
DWORD WINAPI GetProcessVersion( DWORD processid )
{
TDB *pTask;
PDB *pdb = PROCESS_IdToPDB( processid );
if (!pdb) return 0;
if (!(pTask = (TDB *)GlobalLock16( pdb->task ))) return 0;
return (pTask->version&0xff) | (((pTask->version >>8) & 0xff)<<16);
}
/***********************************************************************
* GetProcessFlags (KERNEL32)
*/
DWORD WINAPI GetProcessFlags( DWORD processid )
{
PDB *pdb = PROCESS_IdToPDB( processid );
if (!pdb) return 0;
return pdb->flags;
}
/***********************************************************************
* SetProcessWorkingSetSize [KERNEL32.662]
* Sets the min/max working set sizes for a specified process.
*
* PARAMS
* hProcess [I] Handle to the process of interest
* minset [I] Specifies minimum working set size
* maxset [I] Specifies maximum working set size
*
* RETURNS STD
*/
BOOL WINAPI SetProcessWorkingSetSize(HANDLE hProcess,DWORD minset,
DWORD maxset)
{
FIXME(process,"(0x%08x,%ld,%ld): stub - harmless\n",hProcess,minset,maxset);
if(( minset == -1) && (maxset == -1)) {
/* Trim the working set to zero */
/* Swap the process out of physical RAM */
}
return TRUE;
}
/***********************************************************************
* GetProcessWorkingSetSize (KERNEL32)
*/
BOOL WINAPI GetProcessWorkingSetSize(HANDLE hProcess,LPDWORD minset,
LPDWORD maxset)
{
FIXME(process,"(0x%08x,%p,%p): stub\n",hProcess,minset,maxset);
/* 32 MB working set size */
if (minset) *minset = 32*1024*1024;
if (maxset) *maxset = 32*1024*1024;
return TRUE;
}
/***********************************************************************
* SetProcessShutdownParameters (KERNEL32)
*
* CHANGED - James Sutherland (JamesSutherland@gmx.de)
* Now tracks changes made (but does not act on these changes)
* NOTE: the definition for SHUTDOWN_NORETRY was done on guesswork.
* It really shouldn't be here, but I'll move it when it's been checked!
*/
#define SHUTDOWN_NORETRY 1
static unsigned int shutdown_noretry = 0;
static unsigned int shutdown_priority = 0x280L;
BOOL WINAPI SetProcessShutdownParameters(DWORD level,DWORD flags)
{
if (flags & SHUTDOWN_NORETRY)
shutdown_noretry = 1;
else
shutdown_noretry = 0;
if (level > 0x100L && level < 0x3FFL)
shutdown_priority = level;
else
{
ERR(process,"invalid priority level 0x%08lx\n", level);
return FALSE;
}
return TRUE;
}
/***********************************************************************
* GetProcessShutdownParameters (KERNEL32)
*
*/
BOOL WINAPI GetProcessShutdownParameters( LPDWORD lpdwLevel,
LPDWORD lpdwFlags )
{
(*lpdwLevel) = shutdown_priority;
(*lpdwFlags) = (shutdown_noretry * SHUTDOWN_NORETRY);
return TRUE;
}
/***********************************************************************
* SetProcessPriorityBoost (KERNEL32)
*/
BOOL WINAPI SetProcessPriorityBoost(HANDLE hprocess,BOOL disableboost)
{
FIXME(process,"(%d,%d): stub\n",hprocess,disableboost);
/* Say we can do it. I doubt the program will notice that we don't. */
return TRUE;
}
/***********************************************************************
* ReadProcessMemory (KERNEL32)
* FIXME: check this, if we ever run win32 binaries in different addressspaces
* ... and add a sizecheck
*/
BOOL WINAPI ReadProcessMemory( HANDLE hProcess, LPCVOID lpBaseAddress,
LPVOID lpBuffer, DWORD nSize,
LPDWORD lpNumberOfBytesRead )
{
memcpy(lpBuffer,lpBaseAddress,nSize);
if (lpNumberOfBytesRead) *lpNumberOfBytesRead = nSize;
return TRUE;
}
/***********************************************************************
* WriteProcessMemory (KERNEL32)
* FIXME: check this, if we ever run win32 binaries in different addressspaces
* ... and add a sizecheck
*/
BOOL WINAPI WriteProcessMemory(HANDLE hProcess, LPVOID lpBaseAddress,
LPVOID lpBuffer, DWORD nSize,
LPDWORD lpNumberOfBytesWritten )
{
memcpy(lpBaseAddress,lpBuffer,nSize);
if (lpNumberOfBytesWritten) *lpNumberOfBytesWritten = nSize;
return TRUE;
}
/***********************************************************************
* RegisterServiceProcess (KERNEL, KERNEL32)
*
* A service process calls this function to ensure that it continues to run
* even after a user logged off.
*/
DWORD WINAPI RegisterServiceProcess(DWORD dwProcessId, DWORD dwType)
{
/* I don't think that Wine needs to do anything in that function */
return 1; /* success */
}
/***********************************************************************
* GetExitCodeProcess [KERNEL32.325]
*
* Gets termination status of specified process
*
* RETURNS
* Success: TRUE
* Failure: FALSE
*/
BOOL WINAPI GetExitCodeProcess(
HANDLE hProcess, /* [I] handle to the process */
LPDWORD lpExitCode) /* [O] address to receive termination status */
{
struct get_process_info_reply reply;
if (!PROCESS_QueryInfo( hProcess, &reply )) return FALSE;
if (lpExitCode) *lpExitCode = reply.exit_code;
return TRUE;
}
/***********************************************************************
* GetProcessHeaps [KERNEL32.376]
*/
DWORD WINAPI GetProcessHeaps(DWORD nrofheaps,HANDLE *heaps) {
FIXME(win32,"(%ld,%p), incomplete implementation.\n",nrofheaps,heaps);
if (nrofheaps) {
heaps[0] = GetProcessHeap();
/* ... probably SystemHeap too ? */
return 1;
}
/* number of available heaps */
return 1;
}
/***********************************************************************
* PROCESS_SuspendOtherThreads
*/
void PROCESS_SuspendOtherThreads(void)
{
#if 0
PDB *pdb;
THREAD_ENTRY *entry;
SYSTEM_LOCK();
pdb = PROCESS_Current();
entry = pdb->thread_list->next;
for (;;)
{
if (entry->thread != THREAD_Current() && !THREAD_IsWin16(entry->thread))
{
HANDLE handle = HANDLE_Alloc( PROCESS_Current(),
&entry->thread->header,
THREAD_ALL_ACCESS, FALSE, -1 );
SuspendThread(handle);
CloseHandle(handle);
}
if (entry == pdb->thread_list) break;
entry = entry->next;
}
SYSTEM_UNLOCK();
#endif
}
/***********************************************************************
* PROCESS_ResumeOtherThreads
*/
void PROCESS_ResumeOtherThreads(void)
{
#if 0
PDB *pdb;
THREAD_ENTRY *entry;
SYSTEM_LOCK();
pdb = PROCESS_Current();
entry = pdb->thread_list->next;
for (;;)
{
if (entry->thread != THREAD_Current() && !THREAD_IsWin16(entry->thread))
{
HANDLE handle = HANDLE_Alloc( PROCESS_Current(),
&entry->thread->header,
THREAD_ALL_ACCESS, FALSE, -1 );
ResumeThread(handle);
CloseHandle(handle);
}
if (entry == pdb->thread_list) break;
entry = entry->next;
}
SYSTEM_UNLOCK();
#endif
}
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