VOID
CloseAsc(ASSOC_IPC * asipc)
{
int i = 0;
/*
** If we are a gcc let the client disconnect first. If ten seconds
** elapse then disconnect anyways.
*/
while( is_gcc && asipc->IpcInternal.AssocInfo->bPipesClosed == FALSE
&& i++ < 200 )
PCsleep(50);
if (asipc->SndStdChan)
CloseHandle(asipc->SndStdChan);
if (asipc->RcvStdChan)
{
WriteFile(asipc->RcvStdChan, "", 1, &i, NULL);
Sleep(0);
CloseHandle(asipc->RcvStdChan);
}
if (asipc->SndExpChan)
CloseHandle(asipc->SndExpChan);
if (asipc->RcvExpChan)
{
WriteFile(asipc->RcvExpChan, "", 1, &i, NULL);
Sleep(0);
CloseHandle(asipc->RcvExpChan);
}
if (asipc->ClientReadHandle)
CloseHandle(asipc->ClientReadHandle);
/* Mark pipes as being closed. */
if ( asipc->IpcInternal.AssocInfo )
{
asipc->IpcInternal.AssocInfo->bPipesClosed = TRUE;
asipc->IpcInternal.AssocInfo->refs--; /* decrement reference ct */
asipc->IpcInternal.AssocInfo = NULL;
}
asipc->SndStdChan = NULL;
asipc->RcvStdChan = NULL;
asipc->SndExpChan = NULL;
asipc->RcvExpChan = NULL;
asipc->ClientReadHandle = NULL;
if ( asipc->IpcInternal.server )
{
asipc->IpcInternal.server->nConnections--;
if ( 0 == asipc->IpcInternal.server->nConnections )
RemoveServer( asipc->IpcInternal.server );
}
return;
}
STATUS
create_canon_fe(SEPFILE *res_ptr)
{
STATUS ret_val = OK ; /* if OK, refresh FE screen */
char do_com_result ;
#ifdef VMS
if (SEPtcsubs < 4)
PCsleep(1000);
#endif
show_cursor();
do_com_result = do_comments();
append_line(OPEN_CANON,1);
switch (do_com_result)
{
case 'R':
case 'r':
append_sepfile(res_ptr);
break;
case 'E':
case 'e':
break;
case 'I':
case 'i':
append_line(SKIP_SYMBOL,1);
break;
}
append_line(CLOSE_CANON,1);
kfe_ptr = kfebuffer; /* reset counter for key buffer */
if (canonAns == EOS)
{
disp_prompt(NULLSTR,NULL,NULL); /* erase prompt */
}
else
{
CMnext(kfe_ptr);
ret_val = FAIL; /* don't refresh FE screen */
}
return (ret_val);
}
/*
** Name: PCexec_suid - Execute a command as the ingres user.
**
** Description:
** This procedure works with the Ingres service to run the given
** command as the ingres user. It mimicks the "setuid" bit in UNIX.
**
** Inputs:
** cmdbuf - command to execute as the ingres user
**
** Outputs:
** none
**
** Returns:
** OK
** FAIL
**
** Side Effects:
** none
**
** History:
** 08-jan-1998 (somsa01)
** Created.
** 19-feb-1998 (somsa01)
** We need to pass to the service the current working directory
** as well. (Bug #89006)
** 25-feb-1998 (somsa01)
** We now have an input file for the process' stdin which
** runs through the OpenIngres service.
** 19-jun-1998 (somsa01)
** Use SYSTEM_PRODUCT_NAME for the name of the service.
** 10-jul-1998 (kitch01)
** Bug 91362. If user is 'system' run through OpenIngres service
** despite having access to server shared memory 'system' does not
** have required privilege to access semaphores/mutexes.
** 11-jun-1999 (somsa01)
** If the command is a startup command, then it is always run through
** the Ingres service.
** 03-nov-1999 (somsa01)
** A failure from ControlService() should be treated as a severe
** error which should not let us continue.
** 22-jan-2000 (somsa01)
** Return the exit code of the spawned process. Also, if the
** files exist, truncate them. The service name is now keyed off
** of II_INSTALLATION.
** 05-jun-2000 (somsa01)
** The Ingres installation may be started as the SYSTEM account,
** in which the 'ingres' user will not automatically have access
** to the shared memory segments. Therefore, even if the real
** user is 'ingres', check to see if he has access.
** 24-oct-2000 (somsa01)
** Removed the check on shared memory access. Access to the shared
** memory segment does not necessarily mean that the user running
** the process does not need to run the specified process as the
** Ingres owner. Also, generalized the check of the user with
** IDname_service().
** 18-dec-2000 (somsa01)
** Modified the cases to run the command "as is" without the Ingres
** service.
** 20-mar-2002 (somsa01)
** If all is well, return the exit code of the child process that
** was executed.
** 29-mar-2002 (somsa01)
** Properly return the child process exit code.
** 11-apr-2003 (somsa01)
** While waiting for "pending" to not be set, give some CPU back
** to the OS.
** 29-Jul-2005 (drivi01)
** Allow user to run the command if he/she owns a shared
** segment and ingres is not running as a service.
** 06-Dec-2006 (drivi01)
** Adding support for Vista, Vista requires "Global\" prefix for
** shared objects as well. Replacing calls to GVosvers with
** GVshobj which returns the prefix to shared objects.
** Added PCadjust_SeDebugPrivilege to allow quering of
** System processes.
** 25-Jul-2007 (drivi01)
** On Vista, PCexec_suid is unable to use SE_DEBUG Privilege
** to query process status and retireve its exit code.
** The routine for monitoring a process and retrieving
** its exit code has been moved to Ingres Service.
** 05-Nov-2009 (wanfr01) b122847
** Don't do a PCsleep unless you are waiting for more input
*/
STATUS
PCexec_suid(char *cmdbuf)
{
EX_CONTEXT context;
SERVICE_STATUS ssServiceStatus;
LPSERVICE_STATUS lpssServiceStatus = &ssServiceStatus;
struct SETUID setuid;
DWORD ProcID;
HANDLE SaveStdout;
SECURITY_ATTRIBUTES sa;
CHAR szRealUserID[25] = "";
CHAR *pszRealUserID = szRealUserID;
CHAR szServiceUserID[25] = "";
CHAR *pszServiceUserID = szServiceUserID;
DWORD BytesWritten, BytesRead = 0;
CHAR *inst_id;
CHAR SetuidShmName[64];
CHAR *temp_loc;
CHAR InBuf[256], OutBuf[256];
static CHAR SetuidPipeName[32];
CL_ERR_DESC err_code;
CHAR ServiceName[255];
DWORD ExitCode = 0;
CHAR tchII_INSTALLATION[3];
BOOL SetuidDbCmd = FALSE, ServiceCommand = FALSE;
int i, cmdlen;
char *ObjectPrefix;
u_i4 drType;
SC_HANDLE schSCManager, OpIngSvcHandle;
BOOL bServiceStarted = FALSE;
if (EXdeclare(ex_handler, &context) != OK)
{
EXdelete();
PCexit(FAIL);
}
NMgtAt("II_INSTALLATION", &inst_id);
STcopy(inst_id, tchII_INSTALLATION);
/*
** See if this is a command that MUST be run through the Ingres
** service.
*/
cmdlen = (i4)STlength(cmdbuf);
for (i = 0; ServiceCommands[i] ; i++)
{
if (STbcompare( cmdbuf, cmdlen, ServiceCommands[i],
(i4)STlength(ServiceCommands[i]), FALSE ) == 0)
{
ServiceCommand = TRUE;
break;
}
}
/*
** If the user is the same as the user who started the Ingres
** service, just spawn the command.
*/
if (!ServiceCommand)
{
IDname(&pszRealUserID);
if (!IDname_service(&pszServiceUserID) &&
STcompare(pszServiceUserID, pszRealUserID) == 0 &&
PCisAdmin())
{
/*
** Attempt to just execute the command.
*/
return( PCcmdline( (LOCATION *) NULL, cmdbuf, PC_WAIT,
(LOCATION *) NULL, &err_code) );
}
else
{
/*
** If current user is not the same as service user and ingres is not
** running as a service, check if shared memory segment is owned
** by current user, if user has access to shared segment allow him
** to run the command.
*/
PTR shmem;
SIZE_TYPE allocated_pages=0;
STATUS status;
if((status = MEget_pages(ME_MSHARED_MASK, 1, "lglkdata.mem",
&shmem, &allocated_pages, &err_code)) == OK)
{
STprintf(ServiceName, "%s_Database_%s", SYSTEM_SERVICE_NAME,
tchII_INSTALLATION);
if ((schSCManager = OpenSCManager(NULL, NULL,
SC_MANAGER_CONNECT)) != NULL)
{
if ((OpIngSvcHandle = OpenService(schSCManager, ServiceName,
SERVICE_QUERY_STATUS)) != NULL)
{
if (QueryServiceStatus(OpIngSvcHandle,lpssServiceStatus))
{
if (ssServiceStatus.dwCurrentState != SERVICE_STOPPED)
bServiceStarted = TRUE;
}
}
}
if (!bServiceStarted)
return(PCcmdline( (LOCATION *) NULL, cmdbuf, PC_WAIT,
(LOCATION *) NULL, &err_code) );
}
}
/*
** See if this command is an Ingres command which needs to interact
** with at least one database.
*/
for (i = 0; validSetuidDbCmds[i] ; i++)
{
if (STbcompare( cmdbuf, cmdlen, validSetuidDbCmds[i],
(i4)STlength(validSetuidDbCmds[i]), FALSE ) == 0)
{
SetuidDbCmd = TRUE;
break;
}
}
/*
** If the user has access to the Ingres shared memory segment,
** just spawn the command provided that it is not in the
** validSetuidDbCmds list.
*/
if (!SetuidDbCmd)
{
PTR shmem;
SIZE_TYPE allocated_pages=0;
STATUS status;
if (((status = MEget_pages(ME_MSHARED_MASK, 1, "lglkdata.mem",
&shmem,
&allocated_pages, &err_code)) == OK) ||
(status == ME_NO_SUCH_SEGMENT))
{
if (status != ME_NO_SUCH_SEGMENT)
MEfree_pages(shmem, allocated_pages, &err_code);
return( PCcmdline( (LOCATION *) NULL, cmdbuf, PC_WAIT,
(LOCATION *) NULL, &err_code) );
}
}
}
/*
** We must run the command through the Ingres service.
*/
if ( STstrindex(cmdbuf, "-silent", 0, FALSE ) )
SilentMode = TRUE;
iimksec(&sa);
GVshobj(&ObjectPrefix);
STprintf(SetuidShmName, "%s%sSetuidShm", ObjectPrefix, tchII_INSTALLATION);
if ( (SetuidShmHandle = OpenFileMapping(FILE_MAP_READ | FILE_MAP_WRITE,
FALSE,
SetuidShmName)) == NULL )
{
error_exit(GetLastError());
return(FAIL);
}
if ( (SetuidShmPtr = MapViewOfFile(SetuidShmHandle,
FILE_MAP_WRITE | FILE_MAP_READ,
0,
0,
sizeof(struct SETUID_SHM))) == NULL )
{
error_exit(GetLastError());
return(FAIL);
}
/* Set up the information to send to the service. */
STcopy(cmdbuf, setuid.cmdline);
GetCurrentDirectory(sizeof(setuid.WorkingDirectory),
setuid.WorkingDirectory);
NMgtAt("II_TEMPORARY", &temp_loc);
drType = GetDriveType(NULL);
if (drType == DRIVE_REMOTE)
{
STcopy(temp_loc, setuid.WorkingDirectory);
}
SaveStdout = GetStdHandle(STD_OUTPUT_HANDLE);
CVla(GetCurrentProcessId(), setuid.ClientProcID);
STprintf(SetuidPipeName, "\\\\.\\PIPE\\INGRES\\%s\\SETUID", inst_id);
/* Set up the stdout file for the command. */
STprintf(OutfileName, "%s\\%sstdout.tmp", temp_loc, setuid.ClientProcID);
if ( (OutFile = CreateFile(OutfileName,
GENERIC_READ | GENERIC_WRITE,
FILE_SHARE_READ | FILE_SHARE_WRITE,
&sa,
CREATE_ALWAYS,
FILE_ATTRIBUTE_NORMAL,
NULL)) == INVALID_HANDLE_VALUE )
{
error_exit(GetLastError());
return(FAIL);
}
/* Set up the stdin file for the command. */
STprintf(InfileName, "%s\\%sstdin.tmp", temp_loc, setuid.ClientProcID);
if ( (InFile = CreateFile(InfileName,
GENERIC_READ | GENERIC_WRITE,
FILE_SHARE_READ | FILE_SHARE_WRITE,
&sa,
CREATE_ALWAYS,
FILE_FLAG_WRITE_THROUGH,
NULL)) == INVALID_HANDLE_VALUE )
{
error_exit(GetLastError());
return(FAIL);
}
/* Wait until the service is ready to process our request. */
while (SetuidShmPtr->pending == TRUE)
PCsleep(100);
SetuidShmPtr->pending = TRUE;
/* Trigger the "setuid" event of the service. */
if ( (schSCManager = OpenSCManager(NULL, NULL, SC_MANAGER_CONNECT)) == NULL)
{
error_exit(GetLastError());
return(FAIL);
}
STprintf(ServiceName, "%s_Database_%s", SYSTEM_SERVICE_NAME,
tchII_INSTALLATION );
OpIngSvcHandle = OpenService(schSCManager, ServiceName,
SERVICE_USER_DEFINED_CONTROL);
if (OpIngSvcHandle == NULL)
{
STprintf(ServiceName, "%s_DBATools_%s", SYSTEM_SERVICE_NAME,
tchII_INSTALLATION );
OpIngSvcHandle = OpenService(schSCManager, ServiceName,
SERVICE_USER_DEFINED_CONTROL);
}
if ( OpIngSvcHandle == NULL)
{
error_exit(GetLastError());
return(FAIL);
}
if (!ControlService(OpIngSvcHandle, RUN_COMMAND_AS_INGRES,
lpssServiceStatus))
{
error_exit(GetLastError());
CloseServiceHandle(schSCManager);
return(FAIL);
}
WaitNamedPipe(SetuidPipeName, NMPWAIT_WAIT_FOREVER);
/* Send the information to the service. */
if ( (Setuid_Handle = CreateFile(SetuidPipeName,
GENERIC_READ|GENERIC_WRITE,
FILE_SHARE_READ|FILE_SHARE_WRITE,
&sa,
OPEN_EXISTING,
FILE_ATTRIBUTE_NORMAL,
NULL)) == INVALID_HANDLE_VALUE )
{
error_exit(GetLastError());
return(FAIL);
}
if (!WriteFile(Setuid_Handle, &setuid, sizeof(struct SETUID),
&BytesWritten, NULL))
{
error_exit(GetLastError());
return(FAIL);
}
/*
** Retrieve information back from the service, and then
** disconnect from the pipe.
*/
if (!ReadFile(Setuid_Handle, &setuid, sizeof(struct SETUID),
&BytesRead, NULL))
{
error_exit(GetLastError());
return(FAIL);
}
ProcID = setuid.CreatedProcID;
SetuidShmPtr->pending = FALSE;
UnmapViewOfFile(SetuidShmPtr);
SetuidShmPtr = NULL;
CloseHandle(SetuidShmHandle);
if ( (ProcID != -1) && (ProcID != -2) )
{
/*
** Wait for the "spawned" process to exit, reading its output
** from the stdout file.
*/
for (;;)
{
if ( ((!ReadFile(OutFile, OutBuf, sizeof(OutBuf), &BytesRead, NULL)
|| (BytesRead == 0)) && setuid.ExitCode != STILL_ACTIVE ))
break;
if ( BytesRead &&
(!WriteFile(SaveStdout, OutBuf, BytesRead, &BytesWritten,
NULL)) && setuid.ExitCode != STILL_ACTIVE)
break;
else if (BytesRead < sizeof(OutBuf))
PCsleep(200);
/*
** Currently, the only DBA program which can require
** user input is verifydb. Therefore, when it spits out
** the appropriate messages asking for user input, get
** it from the end user and pass it along to the spawned
** process.
*/
if ( (STrstrindex(OutBuf, "S_DU04FF_CONTINUE_PROMPT", 0, FALSE)
!= NULL) ||
(STrstrindex(OutBuf, "S_DU0300_PROMPT", 0, FALSE) != NULL) )
{
SIflush(stdout);
MEfill(sizeof(OutBuf), ' ', &OutBuf);
MEfill(sizeof(InBuf), ' ', &InBuf);
SIgetrec(InBuf, 255, 0);
WriteFile(InFile, InBuf, sizeof(OutBuf), &BytesWritten, NULL);
}
}
ExitCode = setuid.ExitCode;
CloseHandle(Setuid_Handle);
CloseHandle(InFile);
DeleteFile(InfileName);
CloseHandle(OutFile);
DeleteFile(OutfileName);
CloseServiceHandle(OpIngSvcHandle);
CloseServiceHandle(schSCManager);
return(ExitCode);
}
else
{
error_exit(GetLastError());
return(FAIL);
}
}
ADF_CB *
FEadfcb ()
{
if (!done)
{
char *cp;
DB_STATUS rval;
PTR srv_cb_ptr;
SIZE_TYPE srv_size;
SIZE_TYPE dbinfo_size;
PTR dbinfoptr;
STATUS tmtz_status;
STATUS date_status;
char date_type_alias[100];
char col[] = "udefault";
STATUS status = OK;
CL_ERR_DESC sys_err;
ADUUCETAB *ucode_ctbl; /* unicode collation information */
PTR ucode_cvtbl;
done = TRUE;
/* first, get the size of the ADF's server control block */
srv_size = adg_srv_size();
/* allocate enough memory for it */
if ((srv_cb_ptr = MEreqmem(0, srv_size, FALSE, (STATUS *)NULL)) == NULL)
{
EXsignal(EXFEBUG, 1, ERx("FEadfcb(alloc)"));
}
/*
** Fix up code so that "now" works properly for frontends.
** Only allocating enough for one (1) dbmsinfo() request.
*/
dbinfo_size = sizeof(ADF_TAB_DBMSINFO);
if ((dbinfoptr = MEreqmem(0, dbinfo_size, TRUE, (STATUS*)NULL)) == NULL)
{
IIUGbmaBadMemoryAllocation(ERx("FEadfcb"));
}
dbinfo = (ADF_TAB_DBMSINFO *) dbinfoptr;
dbinfo->tdbi_next = NULL;
dbinfo->tdbi_prev = NULL;
dbinfo->tdbi_length = dbinfo_size;
dbinfo->tdbi_type = ADTDBI_TYPE;
dbinfo->tdbi_s_reserved = -1;
dbinfo->tdbi_l_reserved = (PTR)-1;
dbinfo->tdbi_owner = (PTR)-1;
dbinfo->tdbi_ascii_id = ADTDBI_ASCII_ID;
dbinfo->tdbi_numreqs = 1;
/*
** Now define request.
*/
dbinfo->tdbi_reqs[0].dbi_func = IIUGnfNowFunc;
dbinfo->tdbi_reqs[0].dbi_num_inputs = 0;
dbinfo->tdbi_reqs[0].dbi_lenspec.adi_lncompute = ADI_FIXED;
STcopy("_BINTIM", dbinfo->tdbi_reqs[0].dbi_reqname);
dbinfo->tdbi_reqs[0].dbi_reqcode = 1;
dbinfo->tdbi_reqs[0].dbi_lenspec.adi_fixedsize = 4;
dbinfo->tdbi_reqs[0].dbi_dtr = DB_INT_TYPE;
/*
** set timezone in ADF cb - Any errors must be reported
** after adg_init() called.
*/
if ( (tmtz_status = TMtz_init(&cb.adf_tzcb)) == OK)
{
tmtz_status = TMtz_year_cutoff(&cb.adf_year_cutoff);
}
/* Always use INGRESDATE by default, and check
** 'ii.<node>.config.date_alias' (kibro01) b118702
*/
cb.adf_date_type_alias = AD_DATE_TYPE_ALIAS_INGRES;
STprintf(date_type_alias,ERx("ii.%s.config.date_alias"),PMhost());
date_status = PMget(date_type_alias, &cp);
if (date_status == OK && cp != NULL && STlength(cp))
{
if (STbcompare(cp, 0, ERx("ansidate"), 0, 1) == 0)
cb.adf_date_type_alias = AD_DATE_TYPE_ALIAS_ANSI;
else if (STbcompare(cp, 0, ERx("ingresdate"), 0, 1) == 0)
cb.adf_date_type_alias = AD_DATE_TYPE_ALIAS_INGRES;
else
cb.adf_date_type_alias = AD_DATE_TYPE_ALIAS_NONE;
}
/* set timezone table to NULL in ADF cb, adg_init() will fill it */
/* cb.adf_tz_table = NULL; - not needed, done in declaration above */
/* Start up ADF */
rval = adg_startup(srv_cb_ptr, srv_size, dbinfo, 0);
if (DB_FAILURE_MACRO(rval))
{
/*
** Before bailing out, try to be helpful. Since the environment
** is likely not set up correctly, write hard coded messages
** since error message fetch will likely fail in this situation.
*/
char *tempchar;
i4 dummy;
LOCATION temploc;
NMgtAt("II_SYSTEM", &tempchar);
if (tempchar && *tempchar)
{
LOfroms(PATH, tempchar, &temploc);
if (LOexist(&temploc))
{
tempchar = ERx("FEadfcb: II_SYSTEM DOES NOT EXIST\n");
SIwrite(STlength(tempchar), tempchar, &dummy, stderr);
}
else
{
NMloc(ADMIN, FILENAME, ERx("config.dat"), &temploc);
if (LOexist(&temploc))
{
tempchar = ERx("FEadfcb: II_SYSTEM IS NOT SET CORRECTLY\n");
SIwrite(STlength(tempchar), tempchar, &dummy, stderr);
}
}
}
else
{
tempchar = ERx("FEadfcb: II_SYSTEM IS NOT SET\n");
SIwrite(STlength(tempchar), tempchar, &dummy, stderr);
}
EXsignal(EXFEBUG, 1, ERx("FEadfcb(start)"));
}
/* put the pointer to ADF's server control block in the ADF_CB */
cb.adf_srv_cb = srv_cb_ptr;
/* set up the error message buffer */
cb.adf_errcb.ad_ebuflen = DB_ERR_SIZE;
cb.adf_errcb.ad_errmsgp = ebuffer;
/* initialize the ADF_CB */
rval = adg_init(&cb);
if (DB_FAILURE_MACRO(rval))
{
EXsignal(EXFEBUG, 1, ERx("FEadfcb(init)"));
}
/* find out which natural language we should speak */
cb.adf_slang = iiuglcd_langcode();
/* Always QUEL; for SQL explictly change this with 'IIAFdsDmlSet()'. */
cb.adf_qlang = DB_QUEL;
/* lets get the multinational info */
/*
** Defaults for all of these are initially set statically, above.
*/
NMgtAt(ERx("II_DATE_FORMAT"), &cp);
if ( cp != NULL && *cp != EOS )
{
FEapply_date_format(&cb,cp);
}
NMgtAt(ERx("II_MONEY_FORMAT"), &cp);
if ( cp != NULL && *cp != EOS )
{
FEapply_money_format(&cb,cp);
}
NMgtAt(ERx("II_MONEY_PREC"), &cp);
if ( cp != NULL && *cp != EOS )
{
FEapply_money_prec(&cb,cp);
}
NMgtAt(ERx("II_DECIMAL"), &cp);
if ( cp != NULL && *cp != EOS )
{
FEapply_decimal(&cb,cp);
}
NMgtAt(ERx("II_UNICODE_SUBS"), &cp);
if ( !cp )
{
cb.adf_unisub_status = AD_UNISUB_OFF;
}
else
{
/* As with SET unicode_substitution take the first char */
cb.adf_unisub_status = AD_UNISUB_ON;
*cb.adf_unisub_char = cp[0];
}
NMgtAt(ERx("II_NULL_STRING"), &cp);
if ( cp != NULL && *cp != EOS )
{
FEapply_null(&cb,cp);
}
/* If there was a Timezone error other than the expected ingbuild
** error TM_PMFILE_OPNERR, then lets report it now. */
if (tmtz_status && (tmtz_status != TM_PMFILE_OPNERR))
{
LOCATION loc_root;
STATUS status = OK;
status = NMloc(FILES, PATH, ERx("zoneinfo"), &loc_root);
#if defined(conf_BUILD_ARCH_32_64) && defined(BUILD_ARCH64)
status = LOfaddpath(&loc_root, ERx("lp64"), &loc_root);
#endif
#if defined(conf_BUILD_ARCH_64_32) && defined(BUILD_ARCH32)
{
/*
** Reverse hybrid support must be available in ALL
** 32bit binaries
*/
char *rhbsup;
NMgtAt("II_LP32_ENABLED", &rhbsup);
if ( (rhbsup && *rhbsup) &&
( !(STbcompare(rhbsup, 0, "ON", 0, TRUE)) ||
!(STbcompare(rhbsup, 0, "TRUE", 0, TRUE))))
status = LOfaddpath(&loc_root, "lp32", &loc_root);
}
#endif /* ! LP64 */
if ( status == OK )
{
status = LOexist(&loc_root);
}
if ( status == OK )
{
IIUGerr(tmtz_status, 0, 0);
/* As this may disappear from the screen quickly,
** let's pause to allow the users to reflect on the
** fact that the timezone info is (probably) wrong.
*/
if (!IIugefa_err_function) PCsleep(5000);
}
}
/* Initialize unicode collation for UTF8 installations */
if (CMischarset_utf8())
{
if (status = aduucolinit(col, MEreqmem,
&ucode_ctbl, &ucode_cvtbl, &sys_err))
{
EXsignal(EXFEBUG, 1, ERx("FEadfcb(alloc)"));
}
cb.adf_ucollation = (PTR) ucode_ctbl;
/* Set unicode normalization to NFC just in case
** Front end will need it.
*/
if ((status = adg_setnfc(&cb)) != E_DB_OK)
EXsignal(EXFEBUG, 1, ERx("FEadfcb(alloc)"));
}
/* lets not do this again! */
}
return &cb;
}
/*{
** Name: LGK_initialize() - initialize the lg/lk shared mem segment.
**
** Description:
** This routine is called by the LGinitialize or LKinitialize routine. IT
** assumes that a previous caller has allocated the shared memory segment.
**
** If it discovers that the shared memory segment has not yet been
** initialized, it calls the LG and LK initialize-memory routines to do so.
**
** Inputs:
** flag - bit mask of:
** LOCK_LGK_MEMORY to lock the shared data segment
** LGK_IS_CSP if process is CSP process this node.
**
** Outputs:
** sys_err - place for system-specific error information.
**
** Returns:
** OK - success
** !OK - failure (CS*() routine failure, segment not mapped, ...)
**
** History:
** Summer, 1992 (bryanp)
** Working on the new portable logging and locking system.
** 19-oct-1992 (bryanp)
** Check memory version number when attaching.
** 22-oct-1992 (bryanp)
** Change LGLKDATA.MEM to lglkdata.mem.
** 23-Oct-1992 (daveb)
** name the semaphore too.
** 13-feb-1993 (keving)
** Remove support for II_LGK_MEMORY_SIZE. If II_LG_MEMSIZE
** is not set then calculate memory size from PM values.
** 24-may-1993 (bryanp)
** If the shared memory is the wrong version, don't install the
** at_exit handlers (the rundown routines won't be able to interpret
** the memory properly).
** 26-jul-1993 (jnash)
** Add 'flag' param lock the LGK data segment.
** 20-sep-1993 (bryanp)
** In addition to calling PCatexit, call (on VMS) sys$dclexh, since
** there are some situations (image death and image rundown without
** process rundown) which are caught neither by PCatexit (since
** PCexit isn't run) nor by check-dead threads (since process
** rundown never happened). This fixes a hole where an access-
** violating ckpdb or auditdb command never got cleaned up.
** 31-jan-1994 (bryanp)
** Back out a few "features" which are proving countereffective:
** 1) Don't bother checking mem_creator_pid to see if the previous
** creator of the shared memory has died. This was an attempt to
** gracefully re-use sticky shared memory following a system crash,
** but it is suspected as being the culprit in a series of system
** failures by re-initializing the shared memory at inopportune
** times.
** 2) Don't complain if the shared memory already exists but is of a
** different size than you expected. Just go ahead and try to use
** it anyway.
** 21-feb-1994 (bryanp)
** Reverse item (1) of the above 31-jan-1994 change and re-enable the
** graceful re-use of shared memory. People weren't happy with
** having to run ipcclean and csinstall all the time.
** 23-may-1994 (bryanp)
** On VMS, disable ^Y for LG/LK-aware processes. We don't want to allow
** ^Y because you might interrupt the process right in the middle
** of an LG or LK operation, while holding the shared memory
** semaphore, and this would then wedge the whole installation.
**
** 17-May-1994 (daveb) 59127
** Attach lgk_mem semaphore if we're attaching to the segment.
** 30-jan-1995 (lawst01) bug 61984
** Use memory needed calculation from the 'lgk_calculate_size'
** function to determine the size of the shared memory pool for
** locking and locking. If the II_LG_MEMSIZE variable is specified
** with a value larger than needed use the supplied value. If
** lgk_calculate_size is unable to calculate a size then use the
** magic number of 400000. In addition issue a warning message
** and continue executing in the event the number of pages
** allocated is less than the number requested.
** 24-apr-1997 (nanpr01)
** Reinstate Bryanp's change. In the process of fixing bug 61984
** by Steve Lawrence and subsequent undo of Steve's fix by Nick
** Ireland on 25-jun-96 (nick) caused the if 0 code removed.
** Part of the Steve's change was not reinstated such as not returning
** the status and exit and continue.
** 1. Don't complain if the shared memory already exists but is of a
** different size than you expected. Just go ahead and try to use
** it.
** 18-aug-1998 (hweho01)
** Reclaim the kernel resource if LG/LK shared memory segment is
** reinitialized. If the shared segment is re-used (the previous creator
** of the shared segment has died), the cross-process semaphores get
** initialized more than once at the same locations. That cause the
** kernel resource leaks on DG/UX (OS release 4.11MU04). To fix the
** problem, CS_cp_sem_cleanup() is called to destroy all the
** semaphores before LG/LK shraed segment get recreated.
** CS_cp_sem_cleanup() is made dependent on xCL_NEED_SEM_CLEANUP and
** OS_THREADS_USED, it returns immediately for most platforms.
** 27-Mar-2000 (jenjo02)
** Added test for crossed thread types, refuse connection
** to LGK memory with E_DMA811_LGK_MT_MISMATCH.
** 18-apr-2001 (devjo01)
** s103715 (Portable cluster support)
** - Add CX mem requirement calculations.
** - Add LGK_IS_CSP flag to indicate that LGK memory is being
** initialized for a CSP process.
** - Add basic CX initialization.
** 19-sep-2002 (devjo01)
** If running NUMA clustered allocate memory out of local RAD.
** 30-Apr-2003 (jenjo02)
** Rearchitected to silence long-tolerated race conditions.
** BUG 110121.
** 27-feb-2004 (devjo01)
** Rework allocation of CX shared memory to be compatible
** with race condition fix introduced for bug 110121.
** 29-Dec-2008 (jonj)
** If lgk_calculate_size() returns FAIL, the total memory
** needed exceeds MAX_SIZE_TYPE and we can't continue, but
** tell what we can about the needs of the various bits of
** memory before quitting.
** 06-Aug-2009 (wanfr01)
** Bug 122418 - Return E_DMA812 if LOCK_LGK_MUST_ATTACH is
** is passed in and memory segment does not exist
** 20-Nov-2009 (maspa05) bug 122642
** In order to synchronize creation of UUIDs across servers added
** a semaphore and a 'last time' variable into LGK memory.
** 14-Dec-2009 (maspa05) bug 122642
** #ifdef out the above change for Windows. The rest of the change
** does not apply to Windows so the variables aren't defined.
*/
STATUS
LGK_initialize(
i4 flag,
CL_ERR_DESC *sys_err,
char *lgk_info)
{
PTR ptr;
SIZE_TYPE memleft;
SIZE_TYPE size;
STATUS ret_val;
STATUS mem_exists;
char mem_name[15];
SIZE_TYPE allocated_pages;
i4 me_flags;
i4 me_locked_flag;
SIZE_TYPE memory_needed;
char *nm_string;
SIZE_TYPE pages;
LGK_MEM *lgk_mem;
i4 err_code;
SIZE_TYPE min_memory;
i4 retries;
i4 i;
i4 attached;
PID *my_pid_slot;
i4 clustered;
u_i4 nodes;
SIZE_TYPE cxmemreq;
PTR pcxmem;
LGLK_INFO lgkcount;
char instid[4];
CL_CLEAR_ERR(sys_err);
/*
** if LGK_base is set then this routine has already been called. It is
** set up so that both LGiniitalize and LKinitialize calls it, but only
** the first call does anything.
*/
if (LGK_base.lgk_mem_ptr)
return(OK);
PCpid( &LGK_my_pid );
memory_needed = 0;
NMgtAt("II_LG_MEMSIZE", &nm_string);
if (nm_string && *nm_string)
#if defined(LP64)
if (CVal8(nm_string, (long*)&memory_needed))
#else
if (CVal(nm_string, (i4 *)&memory_needed))
#endif /* LP64 */
memory_needed = 0;
/* Always calculate memory needed from PM resource settings */
/* and compare with supplied value, if supplied value is less */
/* than minimum then use minimum */
min_memory = 0;
if ( OK == lgk_get_counts(&lgkcount, FALSE))
{
if ( lgk_calculate_size(FALSE, &lgkcount, &min_memory) )
{
/*
** Memory exceeds MAX_SIZE_TYPE, can't continue.
**
** Do calculation again, this time with "wordy"
** so user can see allocation bits, then quit.
*/
lgk_calculate_size(TRUE, &lgkcount, &min_memory);
return (E_DMA802_LGKINIT_ERROR);
}
}
if (min_memory)
memory_needed = (memory_needed < min_memory) ? min_memory
: memory_needed;
else
memory_needed = (memory_needed < 400000 ) ? 400000
: memory_needed;
clustered = (i4)CXcluster_enabled();
cxmemreq = 0;
if ( clustered )
{
if ( OK != CXcluster_nodes( &nodes, NULL ) )
nodes = 0;
cxmemreq = CXshm_required( 0, nodes, lgkcount.lgk_max_xacts,
lgkcount.lgk_max_locks, lgkcount.lgk_max_resources );
if ( MAX_SIZE_TYPE - memory_needed < cxmemreq )
{
/*
** Memory exceeds MAX_SIZE_TYPE, can't continue.
**
** Do calculation again, this time with "wordy"
** so user can see allocation bits, then quit.
*/
SIprintf("Total LG/LK/CX allocation exceeds max of %lu bytes by %lu\n"
"Adjust logging/locking configuration values and try again\n",
MAX_SIZE_TYPE, cxmemreq - (MAX_SIZE_TYPE - memory_needed));
lgk_calculate_size(TRUE, &lgkcount, &min_memory);
return (E_DMA802_LGKINIT_ERROR);
}
memory_needed += cxmemreq;
}
if ( memory_needed < MAX_SIZE_TYPE - ME_MPAGESIZE )
pages = (memory_needed + ME_MPAGESIZE - 1) / ME_MPAGESIZE;
else
pages = memory_needed / ME_MPAGESIZE;
/*
** Lock the LGK segment if requested to do so
*/
if (flag & LOCK_LGK_MEMORY)
me_locked_flag = ME_LOCKED_MASK;
else
me_locked_flag = 0;
me_flags = (me_locked_flag | ME_MSHARED_MASK | ME_IO_MASK |
ME_CREATE_MASK | ME_NOTPERM_MASK | ME_MZERO_MASK);
if (CXnuma_user_rad())
me_flags |= ME_LOCAL_RAD;
STcopy("lglkdata.mem", mem_name);
/*
** In general, we just want to attach to the shared memory and detect if
** we are the first process to do so. However, there are ugly race
** conditions to consider, as well as complications because the shared
** memory may be left around following a system crash.
**
** First we attempt to create the shared memory. Usually it already exists,
** so we check for and handle the case of "already exists".
*/
/*
** (jenjo02)
**
** Restructured to better handle all those ugly race conditions
** which are easily reproduced by running two scripts, one that
** continuously executes "lockstat" while the other is starting
** and stopping Ingres.
**
** For example,
**
** lockstat A acquires and init's the memory
** RCP attaches to "A" memory
** lockstat A terminates normally
** lockstat B attaches to "A" memory, sees that
** "A"s pid is no longer alive, and
** reinitializes the memory, much to
** the RCP's chagrin.
** or (more commonly)
**
** lockstat A acquires and begins to init the mem
** RCP attaches to "A" memory which is
** still being zero-filled by lockstat,
** checks the version number (zero),
** and fails with a E_DMA434 mismatch.
**
** The fix utilizes the mem_ext_sem to synchronize multiple
** processes; if the semaphore hasn't been initialized or
** if mem_version_no is zero, we'll wait one second and retry,
** up to 60 seconds before giving up. This gives the creating
** process time to complete initialization of the memory.
**
** Up to LGK_MAX_PIDS are allowed to attach to the shared
** memory. When a process attaches it sets its PID in the
** first vacant slot in lgk_mem->mem_pid[]; if there are
** no vacant slots, the attach is refused. When the process
** terminates normally by calling LGK_rundown(), it zeroes
** its PID slot.
**
** When attaching to an existing segment, we check if
** there are any live processes still using the memory;
** if so, we can't destroy it (no matter who created it).
** If there are no live processes attached to the memory,
** we destroy and reallocate it (based on current config.dat
** settings).
*/
for ( retries = 0; ;retries++ )
{
LGK_base.lgk_mem_ptr = (PTR)NULL;
/* Give up if unable to get memory in one minute */
#if defined(conf_CLUSTER_BUILD)
if (retries > 1)
#else
if ( retries )
#endif
{
if ( retries < 60 )
PCsleep(1000);
else
{
/* Another process has it blocked way too long */
uleFormat(NULL, E_DMA800_LGKINIT_GETMEM, (CL_ERR_DESC *)NULL,
ULE_LOG, NULL, NULL, 0, NULL, &err_code, 0);
/* Unable to attach allocated shared memory segment. */
return (E_DMA802_LGKINIT_ERROR);
}
}
ret_val = MEget_pages(me_flags,
pages, mem_name, (PTR*)&lgk_mem,
&allocated_pages, sys_err);
if ( mem_exists = ret_val )
{
if (ret_val == ME_ALREADY_EXISTS)
{
ret_val = MEget_pages((me_locked_flag |
ME_MSHARED_MASK | ME_IO_MASK),
pages, mem_name, (PTR*)&lgk_mem,
&allocated_pages, sys_err);
#if defined(conf_CLUSTER_BUILD)
if (ret_val && !retries)
continue; /* try one more time */
#endif
}
if (ret_val)
{
uleFormat(NULL, ret_val, sys_err,
ULE_LOG, NULL, NULL, 0, NULL, &err_code, 0);
uleFormat(NULL, E_DMA800_LGKINIT_GETMEM, (CL_ERR_DESC *)NULL,
ULE_LOG, NULL, NULL, 0, NULL, &err_code, 0);
/* Unable to attach allocated shared memory segment. */
return (E_DMA802_LGKINIT_ERROR);
}
}
else if (flag & LOCK_LGK_MUST_ATTACH)
{
/* Do not use the shared segment you just allocated */
MEfree_pages((PTR)lgk_mem, allocated_pages, sys_err);
return (E_DMA812_LGK_NO_SEGMENT);
}
size = allocated_pages * ME_MPAGESIZE;
/* Expose this process to the memory */
LGK_base.lgk_mem_ptr = (PTR)lgk_mem;
if ( mem_exists )
{
/*
** Memory exists.
**
** Try to acquire the semaphore. If it's
** uninitialzed, retry from the top.
**
** If the version is zero, then another
** process is initializing the memory;
** keep retrying until the version is
** filled in.
**
*/
if ( ret_val = CSp_semaphore(1, &lgk_mem->mem_ext_sem) )
{
if ( ret_val != E_CS000A_NO_SEMAPHORE )
{
uleFormat(NULL, ret_val, sys_err,
ULE_LOG, NULL, NULL, 0, NULL, &err_code, 0);
ret_val = E_DMA802_LGKINIT_ERROR;
break;
}
continue;
}
/* Retry if still being init'd by another process */
if ( !lgk_mem->mem_version_no )
{
CSv_semaphore(&lgk_mem->mem_ext_sem);
continue;
}
/*
** Check pids which appear to be attached to
** the memory:
**
** If any process is still alive, then we
** assume the memory is consistent and use it.
**
** If a process is now dead, it terminated
** without going through LGK_rundown
** to zero its PID slot, zero it now.
**
** If there are no live PIDs attached to
** the memory, we destroy and recreate it.
*/
my_pid_slot = (PID*)NULL;
attached = 0;
for ( i = 0; i < LGK_MAX_PIDS; i++ )
{
if ( lgk_mem->mem_pid[i] &&
PCis_alive(lgk_mem->mem_pid[i]) )
{
attached++;
}
else
{
/* Vacate the slot */
if (lgk_mem->mem_pid[i])
{
uleFormat(NULL, E_DMA499_DEAD_PROCESS_INFO, (CL_ERR_DESC *)NULL,
ULE_LOG, NULL, NULL, 0, NULL, &err_code, 2,
0, lgk_mem->mem_pid[i],
0, lgk_mem->mem_info[i].info_txt);
}
lgk_mem->mem_pid[i] = (PID)0;
lgk_mem->mem_info[i].info_txt[0] = EOS;
/* Use first vacant slot for this process */
if ( !my_pid_slot )
{
my_pid_slot = &lgk_mem->mem_pid[i];
LGK_base.lgk_pid_slot = i;
}
}
/* Quit when both questions answered */
if ( attached && my_pid_slot )
break;
}
/* If no living pids attached, destroy/reallocate */
if ( !attached )
{
CSv_semaphore(&lgk_mem->mem_ext_sem);
if ( LGK_destroy(allocated_pages, sys_err) )
{
ret_val = E_DMA802_LGKINIT_ERROR;
break;
}
continue;
}
/* All attached pids alive? */
if ( !my_pid_slot )
{
/* ... then there's no room for this process */
uleFormat(NULL, E_DMA80A_LGK_ATTACH_LIMIT, (CL_ERR_DESC *)NULL,
ULE_LOG, NULL, NULL, 0, NULL, &err_code, 1,
0, attached);
ret_val = E_DMA802_LGKINIT_ERROR;
}
else if (lgk_mem->mem_version_no != LGK_MEM_VERSION_CURRENT)
{
uleFormat(NULL, E_DMA434_LGK_VERSION_MISMATCH, (CL_ERR_DESC *)NULL,
ULE_LOG, NULL, NULL, 0, NULL, &err_code, 2,
0, lgk_mem->mem_version_no, 0, LGK_MEM_VERSION_CURRENT);
ret_val = E_DMA435_WRONG_LGKMEM_VERSION;
}
/*
** Don't allow mixed connections of MT/non-MT processes.
** Among other things, the mutexing mechanisms are
** incompatible!
*/
else if ( (CS_is_mt() && (lgk_mem->mem_status & LGK_IS_MT) == 0) ||
(!CS_is_mt() && lgk_mem->mem_status & LGK_IS_MT) )
{
uleFormat(NULL, E_DMA811_LGK_MT_MISMATCH, (CL_ERR_DESC *)NULL,
ULE_LOG, NULL, NULL, 0, NULL, &err_code, 2,
0, (lgk_mem->mem_status & LGK_IS_MT) ? "OS"
: "INTERNAL",
0, (CS_is_mt()) ? "OS"
: "INTERNAL");
ret_val = E_DMA802_LGKINIT_ERROR;
}
else
{
/*
** CX memory (if any) will lie immediately past LGK header.
*/
pcxmem = (PTR)(lgk_mem + 1);
pcxmem = (PTR)ME_ALIGN_MACRO(pcxmem, sizeof(ALIGN_RESTRICT));
LGK_base.lgk_lkd_ptr = (char *)LGK_base.lgk_mem_ptr +
lgk_mem->mem_lkd;
LGK_base.lgk_lgd_ptr = (char *)LGK_base.lgk_mem_ptr +
lgk_mem->mem_lgd;
/* Stuff our pid in first vacant slot */
*my_pid_slot = LGK_my_pid;
STlcopy(lgk_info, lgk_mem->mem_info[i].info_txt, LGK_INFO_SIZE-1);
}
#if defined(VMS) || defined(UNIX)
/* set up pointers to reference the uuid mutex and last time
* variable */
if (!ID_uuid_sem_ptr)
ID_uuid_sem_ptr=&lgk_mem->id_uuid_sem;
if (!ID_uuid_last_time_ptr)
ID_uuid_last_time_ptr=&lgk_mem->uuid_last_time;
if (!ID_uuid_last_cnt_ptr)
ID_uuid_last_cnt_ptr=&lgk_mem->uuid_last_cnt;
#endif
CSv_semaphore(&lgk_mem->mem_ext_sem);
}
else
{
/* Memory did not exist */
/* Zero the version to keep other processes out */
lgk_mem->mem_version_no = 0;
#if defined(VMS) || defined(UNIX)
/* set up the uuid mutex and last time pointers to
* reference the objects in shared memory */
{
STATUS id_stat;
ID_uuid_sem_ptr=&lgk_mem->id_uuid_sem;
ID_uuid_last_time_ptr=&lgk_mem->uuid_last_time;
ID_uuid_last_cnt_ptr=&lgk_mem->uuid_last_cnt;
*ID_uuid_last_cnt_ptr=0;
ID_UUID_SEM_INIT(ID_uuid_sem_ptr,CS_SEM_MULTI,"uuid sem",
&id_stat);
}
#endif
/* ... then initialize the mutex */
CSw_semaphore(&lgk_mem->mem_ext_sem, CS_SEM_MULTI,
"LGK mem ext sem" );
/* Record if memory created for MT or not */
if ( CS_is_mt() )
lgk_mem->mem_status = LGK_IS_MT;
/*
** memory is as follows:
**
** -----------------------------------------------------------|
** | LGK_MEM struct (keep track of this mem) |
** | |
** -----------------------------------------------------------|
** | If a clustered installation memory reserved for CX |
** | |
** ------------------------------------------------------------
** | LKD - database of info for lk system |
** | |
** ------------------------------------------------------------
** | LGD - database of info for lg system |
** | |
** ------------------------------------------------------------
** | memory manipulated by LGKm_* routines for structures used |
** | by both the lk and lg systems. |
** | |
** ------------------------------------------------------------
*/
/* put the LGK_MEM struct at head of segment leaving ptr pointing
** at next aligned piece of memory
*/
/*
** CX memory (if any) will lie immediately past LGK header.
*/
pcxmem = (PTR)(lgk_mem + 1);
pcxmem = (PTR)ME_ALIGN_MACRO(pcxmem, sizeof(ALIGN_RESTRICT));
LGK_base.lgk_lkd_ptr = pcxmem + cxmemreq;
LGK_base.lgk_lkd_ptr = (PTR) ME_ALIGN_MACRO(LGK_base.lgk_lkd_ptr,
sizeof(ALIGN_RESTRICT));
lgk_mem->mem_lkd = (i4)((char *)LGK_base.lgk_lkd_ptr -
(char *)LGK_base.lgk_mem_ptr);
LGK_base.lgk_lgd_ptr = (PTR) ((char *) LGK_base.lgk_lkd_ptr +
sizeof(LKD));
LGK_base.lgk_lgd_ptr = (PTR) ME_ALIGN_MACRO(LGK_base.lgk_lgd_ptr,
sizeof(ALIGN_RESTRICT));
lgk_mem->mem_lgd = (i4)((char *)LGK_base.lgk_lgd_ptr -
(char *)LGK_base.lgk_mem_ptr);
/* now initialize the rest of memory for allocation */
/* how much memory is left? */
ptr = ((char *)LGK_base.lgk_lgd_ptr + sizeof(LGD));
memleft = size - (((char *) ptr) - ((char *) LGK_base.lgk_mem_ptr));
if ( (ret_val = lgkm_initialize_mem(memleft, ptr)) == OK &&
(ret_val = LG_meminit(sys_err)) == OK &&
(ret_val = LK_meminit(sys_err)) == OK )
{
/* Clear array of attached pids and pid info */
for ( i = 0; i < LGK_MAX_PIDS; i++ )
{
lgk_mem->mem_pid[i] = (PID)0;
lgk_mem->mem_info[i].info_txt[0] = EOS;
}
/* Set the creator pid */
LGK_base.lgk_pid_slot = 0;
lgk_mem->mem_creator_pid = LGK_my_pid;
/* Set the version, releasing other processes */
lgk_mem->mem_version_no = LGK_MEM_VERSION_CURRENT;
}
else
{
uleFormat(NULL, ret_val, (CL_ERR_DESC *)NULL,
ULE_LOG, NULL, NULL, 0, NULL, &err_code, 0);
ret_val = E_DMA802_LGKINIT_ERROR;
/* Destroy the shared memory */
LGK_destroy(allocated_pages, sys_err);
}
}
if ( ret_val == OK )
{
PCatexit(LGK_rundown);
if ( clustered )
{
/*
** Perform preliminary cluster connection and CX memory init.
*/
/* Get installation code */
NMgtAt("II_INSTALLATION", &nm_string);
if ( nm_string )
{
instid[0] = *(nm_string);
instid[1] = *(nm_string+1);
}
else
{
instid[0] = 'A';
instid[1] = 'A';
}
instid[2] = '\0';
ret_val = CXinitialize( instid, pcxmem, flag & LGK_IS_CSP );
if ( ret_val )
{
/* Report error returned from CX */
uleFormat(NULL, ret_val, (CL_ERR_DESC *)NULL,
ULE_LOG, NULL, NULL, 0, NULL, &err_code, 0 );
break;
}
}
#ifdef VMS
{
static $EXHDEF exit_block;
i4 ctrl_y_mask = 0x02000000;
/*
** On VMS, programs like the dmfjsp and logstat run as images in
** the shell process. That is, the system doesn't start and stop
** a process for each invocation of the program, it just starts
** and stops an image in the same process. This means that if
** the program should die, the image may be rundown but the process
** will remain, which means that the check-dead threads of other
** processes in the installation will not feel that they need to
** rundown this process, since it's still alive.
**
** By declaring an exit handler, which will get a chance to run
** even if PCexit isn't called, we improve our chances of getting
** to perform rundown processing if we should die unexpectedly.
**
** Furthermore, we ask DCL to disable its ^Y processing, which
** lessens the chance that the user will interrupt us while we
** are holding the semaphore.
*/
exit_block.exh$g_func = LGK_rundown;
exit_block.exh$l_argcount = 1;
exit_block.exh$gl_value = &exit_block.exh$l_status;
if (sys$dclexh(&exit_block) != SS$_NORMAL)
ret_val = FAIL;
lib$disable_ctrl(&ctrl_y_mask, 0);
}
#endif
}
break;
}
if ( ret_val )
LGK_base.lgk_mem_ptr = NULL;
return(ret_val);
}
void IIodbc_timeOutThread()
{
QUEUE *q, *p, *pq;
pENV penv;
pDBC pdbc;
RETCODE rc;
SYSTIME expire_time;
TM_STAMP stamp;
char stampStr[TM_SIZE_STAMP];
ODBC_EXEC_TRACE(ODBC_EX_TRACE)
("IIodbc_timeOutThread() with timeout %d\n", IIodbc_cb.timeout);
while(TRUE)
{
/*
** Search the pool every thirty seconds and check for expired
** connections. Force disconnect and free from the pool
** if the connection handle has passed the expiration time.
** Note that the CLI and driver connection handles are not
** freed.
*/
PCsleep(30000);
TMget_stamp(&stamp);
TMstamp_str(&stamp, stampStr);
ODBC_EXEC_TRACE(ODBC_EX_TRACE)
("IIodbc_timeOutThread woke up at %s\n", stampStr);
TMnow(&expire_time);
if (IIodbc_cb.pooling == DRIVER_POOL)
{
applyLock(SQL_HANDLE_IIODBC_CB, NULL);
for (q = IIodbc_cb.pool_q.q_prev; q!= &IIodbc_cb.pool_q;
q = p)
{
ODBC_EXEC_TRACE(ODBC_EX_TRACE)
("IIodbc_timeOutThread: driver pool count is %d\n",
IIodbc_cb.pool_count);
p = q->q_prev;
pdbc = (pDBC)((pPOOL)q)->pdbc;
ODBC_EXEC_TRACE(ODBC_EX_TRACE)
("IIodbc_timeOutThread: found conn handle %p with time diff %d\n",pdbc,
expire_time.TM_secs - pdbc->expire_time.TM_secs);
if (expire_time.TM_secs - pdbc->expire_time.TM_secs >
IIodbc_cb.timeout)
{
/*
** Note that the connection handle is not freed, only
** removed from the pool.
*/
ODBC_EXEC_TRACE(ODBC_EX_TRACE)
("IIodbc_timeOutThread: EXPIRED. pdbc time is %d vs %d\n",
pdbc->expire_time.TM_secs, expire_time.TM_secs);
rc = IIDisconnect(pdbc->hdr.driverHandle);
QUremove(q);
MEfree((PTR)q);
IIodbc_cb.pool_count -= 1;
ODBC_EXEC_TRACE(ODBC_EX_TRACE)
("new pool count is %d\n",IIodbc_cb.pool_count);
applyLock(SQL_HANDLE_DBC, pdbc);
pdbc->hdr.state = C2;
releaseLock(SQL_HANDLE_DBC, pdbc);
}
}
releaseLock(SQL_HANDLE_IIODBC_CB, NULL);
}
else
{
for (q = IIodbc_cb.env_q.q_prev; q!= &IIodbc_cb.env_q;
q = q->q_prev)
{
penv = (pENV)q;
TRdisplay("Found env handle %p\n",penv);
applyLock(SQL_HANDLE_ENV, penv);
for (pq = penv->pool_q.q_prev; pq != &penv->pool_q;
pq = p)
{
ODBC_EXEC_TRACE(ODBC_EX_TRACE)
("Env pool count is %d\n",penv->pool_count);
p = q->q_prev;
pdbc = (pDBC)((pPOOL)pq)->pdbc;
ODBC_EXEC_TRACE(ODBC_EX_TRACE)
("IIodbc_TimeOutThread: Found conn handle %p with time diff %d\n",pdbc,
expire_time.TM_secs - pdbc->expire_time.TM_secs);
if (expire_time.TM_secs - pdbc->expire_time.TM_secs
> 1)
{
ODBC_EXEC_TRACE(ODBC_EX_TRACE)
("IIodbc_timeOutThread: EXPIRED. pdbc time is %d vs %d\n",
pdbc->expire_time.TM_secs,
expire_time.TM_secs);
rc = IIDisconnect(pdbc->hdr.driverHandle);
QUremove(q);
MEfree((PTR)q);
penv->pool_count -= 1;
ODBC_EXEC_TRACE(ODBC_EX_TRACE)
("IIodbc_timeOutThread: new pool count is %d\n",
penv->pool_count);
}
}
releaseLock(SQL_HANDLE_ENV, penv);
} /* for (q = IIodbc_cb.env_q.q_prev; q!= &IIodbc_cb.env_q;
q = q->q_prev) */
} /* if (IIodbc_cb.pooling == DRIVER_POOL) */
} /* while (TRUE) */
}
/* IIReadfile --- reads data from specified channel
** Inputs:
** asipc ASSOC_IPC for connection.
** hChan Handle to channel from which to read.
** nNumberToRead number of bytes to read.
** lpNUmberRead number of bytes actually read.
** LPOVERLAPPED for compatiblity with win32 ReadFile.
** timeout timeout.
**
** IIReadfile attempts to read from the pipe. It returns OK if the read succeeds
** ~OK if it fails, or GC_TIME_OUT if it times out.
**
** IIReadfile and IIWritefile must maintain a count of how many bytes are in
** the channel in order to implement the timeout functionality because anonymous
** pipes don't provide a wait function like named pipes. Database events
** require the timeout functionality.
**
** History:
** 04-Sep-97 (fanra01)
** Add return of OS error if read 0 bytes.
** 10-Dec-98 (lunbr01) Bug 94183
** Use PeekNamedPipe rather than shared memory counter (*ct) to check
** if data is avail to read (for RECEIVES with a non-INFINITE
** timeout parm only). The shared memory counter was occasionally
** getting corrupted because IIReadFile and IIWriteFile would update
** it at the same time; InterlockedExchange was not sufficient...
** a mutex was needed before the current value of *ct is "gotten"
** for the increment/decrement. The result was that IIReadFile
** would "think" that there was something to read but there wasn't;
** he would then issue the blocked read and wait forever or until
** a dbevent happened to come in. The symptom was an application hang.
** Rather than adding mutexes, PeekNamedPipe was used and the
** shared memory counters eliminated.
*/
ULONG
IIReadFile( ASSOC_IPC *asipc,
HANDLE hChan,
LPVOID lpBuffer,
DWORD nNumberToRead,
LPDWORD lpNumberRead,
LPOVERLAPPED lpOverlapped,
DWORD timeout )
{
DWORD ct = 0;
int i = 0;
int intervals = 0;
BOOL rval = FALSE;
BOOL tout = TRUE;
DWORD dwError = 0;
timeout = timeout == GC_WAIT_FOREVER ? INFINITE : timeout;
*lpNumberRead = 0;
if ( timeout != INFINITE )
{
rval = PeekNamedPipe(hChan, NULL, 0, NULL, &ct, NULL);
if ( rval != TRUE )
{
dwError = GetLastError();
return rval ? OK : dwError;
}
if ( ct == 0 )
{
if ( timeout == 0 )
return GC_TIME_OUT;
intervals = timeout == INFINITE ? 1:timeout/IPC_TIMEOUT_SLEEP ;
for( i = 0; i < intervals ; i++ )
{
PCsleep ( IPC_TIMEOUT_SLEEP );
rval = PeekNamedPipe(hChan, NULL, 0, NULL, &ct, NULL);
if ( rval != TRUE )
{
dwError = GetLastError();
return rval ? OK : dwError;
}
if ( ct != 0 )
{
tout = FALSE;
break;
}
}
if ( tout )
return GC_TIME_OUT;
} /* end if ct (bytes in read pipe) == 0 */
}
rval = ReadFile( hChan, lpBuffer, nNumberToRead,
lpNumberRead, lpOverlapped );
dwError = GetLastError();
if (rval)
{ /* did successful data retrieval */
if (asipc)
{
/* set bPipesClosed to false - may have been set to TRUE
** by the 'Server'.
*/
if (asipc->IpcInternal.AssocInfo)
asipc->IpcInternal.AssocInfo->bPipesClosed = FALSE;
}
} /* did successful data retrieval */
if( rval &&
(!asipc || !asipc->IpcInternal.AssocInfo ||
asipc->IpcInternal.AssocInfo->bPipesClosed) )
{
return ERROR_BROKEN_PIPE;
}
return rval ? OK : dwError;
}