view src/g23m-aci/aci/cmh_l2rq.c @ 516:1ed9de6c90bd

src/g23m-gsm/sms/sms_for.c: bogus malloc removed The new error handling code that was not present in TCS211 blob version contains a malloc call that is bogus for 3 reasons: 1) The memory allocation in question is not needed in the first place; 2) libc malloc is used instead of one of the firmware's proper ways; 3) The memory allocation is made inside a function and then never freed, i.e., a memory leak. This bug was caught in gcc-built FreeCalypso fw projects (Citrine and Selenite) because our gcc environment does not allow any use of libc malloc (any reference to malloc produces a link failure), but this code from TCS3.2 is wrong even for Magnetite: if this code path is executed repeatedly over a long time, the many small allocations made by this malloc call without a subsequent free will eventually exhaust the malloc heap provided by the TMS470 environment, malloc will start returning NULL, and the bogus code will treat it as an error. Because the memory allocation in question is not needed at all, the fix entails simply removing it.
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 22 Jul 2018 06:04:49 +0000
parents 53929b40109c
children
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/* 
+----------------------------------------------------------------------------- 
|  Project :  GSM-PS (6147)
|  Modul   :  CMH_L2RQ
+----------------------------------------------------------------------------- 
|  Copyright 2002 Texas Instruments Berlin, AG 
|                 All rights reserved. 
| 
|                 This file is confidential and a trade secret of Texas 
|                 Instruments Berlin, AG 
|                 The receipt of or possession of this file does not convey 
|                 any rights to reproduce or disclose its contents or to 
|                 manufacture, use, or sell anything it may describe, in 
|                 whole, or in part, without the specific written consent of 
|                 Texas Instruments Berlin, AG. 
+----------------------------------------------------------------------------- 
|  Purpose :  This module provides the query functions related to the 
|             protocol stack adapter for L2R.
+----------------------------------------------------------------------------- 
*/ 

#ifndef CMH_L2RQ_C
#define CMH_L2RQ_C
#endif

#include "aci_all.h"

/*==== INCLUDES ===================================================*/
#include "aci_cmh.h"
#include "ati_cmd.h"
#include "aci_cmd.h"
#include "dti.h"      /* functionality of the dti library */

#ifdef FAX_AND_DATA
#include "aci_fd.h"
#endif    /* of #ifdef FAX_AND_DATA */

#include "dti_conn_mng.h"

#include "cmh_ra.h"
#include "psa.h"
#include "psa_l2r.h"
#include "cmh.h"
#include "cmh_l2r.h"

/*==== CONSTANTS ==================================================*/

/*==== EXPORT =====================================================*/

/*==== VARIABLES ==================================================*/

/*==== FUNCTIONS ==================================================*/

/*
+--------------------------------------------------------------------+
| PROJECT : GSM-PS (6147)         MODULE  : CMH_L2RQ                 |
| STATE   : code                  ROUTINE : qAT_PlusCRLP             |
+--------------------------------------------------------------------+

  PURPOSE : This is the functional counterpart to the +CRLP? AT command
            which returns the current setting of iws, mws, t1 and
            n2.

            <iws>:   IWF to MS window size.
            <mws>:   MS to IWF window size
            <t1> :   acknowledge timer
            <n2> :   retransmission attemps
*/

GLOBAL T_ACI_RETURN qAT_PlusCRLP ( T_ACI_CMD_SRC srcId,
                                   SHORT* iws, SHORT* mws,
                                   SHORT* t1,  SHORT* n2 )
{
  T_L2R_CMD_PRM * pL2RCmdPrm; /* points to L2R command parameters */

  TRACE_FUNCTION ("qAT_PlusCRLP()");

/*
 *-------------------------------------------------------------------
 * check command source
 *-------------------------------------------------------------------
 */  
  if(!cmh_IsVldCmdSrc (srcId)) 
  { 
    ACI_ERR_DESC( ACI_ERR_CLASS_Ext, EXT_ERR_Parameter );
    return( AT_FAIL );
  }

  pL2RCmdPrm = &fnd_cmhPrm[srcId].l2rCmdPrm;

/*
 *-------------------------------------------------------------------
 * fill in parameters
 *-------------------------------------------------------------------
 */  
  *iws   = pL2RCmdPrm -> CRLPiws;
  *mws   = pL2RCmdPrm -> CRLPmws;
  *t1    = pL2RCmdPrm -> CRLPt1;
  *n2    = pL2RCmdPrm -> CRLPn2;


  return( AT_CMPL );
}

/*
+--------------------------------------------------------------------+
| PROJECT : GSM-PS (6147)         MODULE  : CMH_L2RQ                 |
| STATE   : code                  ROUTINE : qAT_PlusDS               |
+--------------------------------------------------------------------+

  PURPOSE : This is the functional counterpart to the +DS? AT command
            which returns the current setting of dir, comp, maxDict
            and maxStr.

            <dir>     :   desired direction of data compression.
            <comp>    :   mode of continue
            <maxDict> :   maximum number of dictionary entries
            <maxStr>  :   maximum string length
*/

GLOBAL T_ACI_RETURN qAT_PlusDS    ( T_ACI_CMD_SRC srcId,
                                    T_ACI_DS_DIR* dir,
                                    T_ACI_DS_COMP* comp,
                                    LONG* maxDict,
                                    SHORT* maxStr )
{
  T_L2R_CMD_PRM * pL2RCmdPrm; /* points to L2R command parameters */

  TRACE_FUNCTION ("qAT_PlusDS()");

/*
 *-------------------------------------------------------------------
 * check command source
 *-------------------------------------------------------------------
 */  
  if(!cmh_IsVldCmdSrc (srcId)) 
  { 
    ACI_ERR_DESC( ACI_ERR_CLASS_Ext, EXT_ERR_Parameter );
    return( AT_FAIL );
  }

  pL2RCmdPrm = &fnd_cmhPrm[srcId].l2rCmdPrm;

/*
 *-------------------------------------------------------------------
 * fill in parameters
 *-------------------------------------------------------------------
 */  
  *dir     = pL2RCmdPrm -> DSdir;
  *comp    = pL2RCmdPrm -> DScomp;
  *maxDict = pL2RCmdPrm -> DSmaxDict;
  *maxStr  = pL2RCmdPrm -> DSmaxStr;


  return( AT_CMPL );
}


/*==== EOF ========================================================*/