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Staging: bcm: return -EFAULT on copy_to_user() failures 

There were a number of places in the bcm_char_ioctl() which returned the
number of bytes remaining to be copied instead of returning -EFAULT.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Dan Carpenter 2010-10-08 14:53:48 +02:00 committed by Greg Kroah-Hartman
parent a1823f2ec3
commit bf58bd66f6
1 changed files with 44 additions and 24 deletions
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68
drivers/staging/bcm/Bcmchar.c
View File

@ -533,6 +533,7 @@ static long bcm_char_ioctl(struct file *filp, UINT cmd, ULONG arg)
if(Status)
{
BCM_DEBUG_PRINT(Adapter,DBG_TYPE_PRINTK, 0, 0,"Failed while copying the IOBufer from user space err:%d",Status);
Status = -EFAULT;
break;
}
@ -540,6 +541,7 @@ static long bcm_char_ioctl(struct file *filp, UINT cmd, ULONG arg)
if(Status)
{
BCM_DEBUG_PRINT(Adapter,DBG_TYPE_PRINTK, 0, 0,"Failed while copying the InputBuffer from user space err:%d",Status);
Status = -EFAULT;
break;
}
//if LED thread is running(Actively or Inactively) set it state to make inactive
@ -574,11 +576,10 @@ static long bcm_char_ioctl(struct file *filp, UINT cmd, ULONG arg)
Status = -EACCES;
break;
}
if(copy_from_user((PCHAR)&IoBuffer, argp, sizeof(IOCTL_BUFFER)))
{
Status = -EFAULT;
break;
}
if(copy_from_user((PCHAR)&IoBuffer, argp, sizeof(IOCTL_BUFFER))) {
Status = -EFAULT;
break;
}
if(copy_from_user(&gpio_info, IoBuffer.InputBuffer, IoBuffer.InputLength))
{
Status = -EFAULT;
@ -615,6 +616,7 @@ static long bcm_char_ioctl(struct file *filp, UINT cmd, ULONG arg)
if(Status)
{
BCM_DEBUG_PRINT(Adapter,DBG_TYPE_PRINTK, 0, 0,"Failed while copying the IOBufer from user space err:%d",Status);
Status = -EFAULT;
break;
}
@ -622,6 +624,7 @@ static long bcm_char_ioctl(struct file *filp, UINT cmd, ULONG arg)
if(Status)
{
BCM_DEBUG_PRINT(Adapter,DBG_TYPE_PRINTK, 0, 0,"Failed while copying the IOBufer Contents from user space err:%d",Status);
Status = -EFAULT;
break;
}
if(IsReqGpioIsLedInNVM(Adapter,pgpio_multi_info[WIMAX_IDX].uiGPIOMask)== FALSE)
@ -683,6 +686,7 @@ static long bcm_char_ioctl(struct file *filp, UINT cmd, ULONG arg)
if(Status)
{
BCM_DEBUG_PRINT(Adapter,DBG_TYPE_PRINTK, 0, 0,"Failed while copying Content to IOBufer for user space err:%d",Status);
Status = -EFAULT;
break;
}
}
@ -704,6 +708,7 @@ static long bcm_char_ioctl(struct file *filp, UINT cmd, ULONG arg)
if(Status)
{
BCM_DEBUG_PRINT(Adapter,DBG_TYPE_PRINTK, 0, 0,"Failed while copying the IOBufer from user space err:%d",Status);
Status = -EFAULT;
break;
}
@ -711,6 +716,7 @@ static long bcm_char_ioctl(struct file *filp, UINT cmd, ULONG arg)
if(Status)
{
BCM_DEBUG_PRINT(Adapter,DBG_TYPE_PRINTK, 0, 0,"Failed while copying the IOBufer Contents from user space err:%d",Status);
Status = -EFAULT;
break;
}
@ -763,6 +769,7 @@ static long bcm_char_ioctl(struct file *filp, UINT cmd, ULONG arg)
if(Status)
{
BCM_DEBUG_PRINT(Adapter,DBG_TYPE_PRINTK, 0, 0,"Failed while copying Content to IOBufer for user space err:%d",Status);
Status = -EFAULT;
break;
}
}
@ -1322,7 +1329,7 @@ static long bcm_char_ioctl(struct file *filp, UINT cmd, ULONG arg)
if(Status)
{
BCM_DEBUG_PRINT(Adapter,DBG_TYPE_PRINTK, 0, 0,"Copy From User space failed. status :%d", Status);
return Status;
return -EFAULT;
}
uiSectorSize = *((PUINT)(IoBuffer.InputBuffer)); /* FIXME: unchecked __user access */
if((uiSectorSize < MIN_SECTOR_SIZE) || (uiSectorSize > MAX_SECTOR_SIZE))
@ -1334,7 +1341,7 @@ static long bcm_char_ioctl(struct file *filp, UINT cmd, ULONG arg)
if(Status)
{
BCM_DEBUG_PRINT(Adapter,DBG_TYPE_PRINTK, 0, 0,"Coping the sector size to use space failed. status:%d",Status);
return Status;
return -EFAULT;
}
}
else
@ -1347,7 +1354,7 @@ static long bcm_char_ioctl(struct file *filp, UINT cmd, ULONG arg)
if(Status)
{
BCM_DEBUG_PRINT(Adapter,DBG_TYPE_PRINTK, 0, 0,"Coping the sector size to use space failed. status:%d",Status);
return Status;
return -EFAULT;
}
}
@ -1383,13 +1390,14 @@ static long bcm_char_ioctl(struct file *filp, UINT cmd, ULONG arg)
if(Status)
{
BCM_DEBUG_PRINT (Adapter, DBG_TYPE_PRINTK, 0, 0, "Copy from user failed\n");
Status = -EFAULT;
break;
}
Status = copy_from_user(&sUserDebugState,IoBuffer.InputBuffer, sizeof(USER_BCM_DBG_STATE));
if(Status)
{
BCM_DEBUG_PRINT (Adapter, DBG_TYPE_PRINTK, 0, 0, "Copy of IoBuffer.InputBuffer failed");
return Status;
return -EFAULT;
}
BCM_DEBUG_PRINT (Adapter, DBG_TYPE_PRINTK, 0, 0, "IOCTL_BCM_SET_DEBUG: OnOff=%d Type = 0x%x ",
@ -1448,7 +1456,7 @@ static long bcm_char_ioctl(struct file *filp, UINT cmd, ULONG arg)
if(copy_from_user(&IoBuffer, argp, sizeof(IOCTL_BUFFER)))
{
BCM_DEBUG_PRINT(Adapter,DBG_TYPE_PRINTK, 0, 0,"copy_from_user failed\n");
Status = -EFAULT;
Status = -EFAULT;
break;
}
if(IOCTL_BCM_NVM_READ == cmd)
@ -1619,7 +1627,7 @@ static long bcm_char_ioctl(struct file *filp, UINT cmd, ULONG arg)
if(Status)
{
BCM_DEBUG_PRINT(Adapter,DBG_TYPE_PRINTK, 0, 0, "Copy of IOCTL BUFFER failed");
return Status ;
return -EFAULT;
}
//Reading FLASH 2.x READ structure
@ -1627,7 +1635,7 @@ static long bcm_char_ioctl(struct file *filp, UINT cmd, ULONG arg)
if(Status)
{
BCM_DEBUG_PRINT(Adapter,DBG_TYPE_PRINTK, 0, 0, "Copy of Input Buffer failed");
return Status ;
return -EFAULT;
}
@ -1692,6 +1700,7 @@ static long bcm_char_ioctl(struct file *filp, UINT cmd, ULONG arg)
if(Status)
{
BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, OSAL_DBG, DBG_LVL_ALL,"Copy to use failed with status :%d", Status);
Status = -EFAULT;
break;
}
NOB = NOB - ReadBytes;
@ -1732,7 +1741,7 @@ static long bcm_char_ioctl(struct file *filp, UINT cmd, ULONG arg)
if(Status)
{
BCM_DEBUG_PRINT(Adapter,DBG_TYPE_PRINTK, 0, 0, "Copy of IOCTL BUFFER failed");
return Status;
return -EFAULT;
}
//Reading FLASH 2.x READ structure
@ -1740,7 +1749,7 @@ static long bcm_char_ioctl(struct file *filp, UINT cmd, ULONG arg)
if(Status)
{
BCM_DEBUG_PRINT(Adapter,DBG_TYPE_PRINTK, 0, 0, "Reading of output Buffer from IOCTL buffer fails");
return Status;
return -EFAULT;
}
BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, OSAL_DBG, DBG_LVL_ALL,"\nsFlash2xRead.Section :%x" ,sFlash2xWrite.Section);
@ -1807,6 +1816,7 @@ static long bcm_char_ioctl(struct file *filp, UINT cmd, ULONG arg)
if(Status)
{
BCM_DEBUG_PRINT(Adapter,DBG_TYPE_PRINTK, 0, 0,"Copy to user failed with status :%d", Status);
Status = -EFAULT;
break ;
}
BCM_DEBUG_PRINT_BUFFER(Adapter,DBG_TYPE_OTHERS, OSAL_DBG, DBG_LVL_ALL,pWriteBuff,WriteBytes);
@ -1847,7 +1857,7 @@ static long bcm_char_ioctl(struct file *filp, UINT cmd, ULONG arg)
if(Status)
{
BCM_DEBUG_PRINT(Adapter,DBG_TYPE_PRINTK, 0, 0, "Copy of IOCTL BUFFER failed");
return Status;
return -EFAULT;
}
if(IoBuffer.OutputLength != sizeof(FLASH2X_BITMAP))
{
@ -1881,7 +1891,7 @@ static long bcm_char_ioctl(struct file *filp, UINT cmd, ULONG arg)
{
BCM_DEBUG_PRINT(Adapter,DBG_TYPE_PRINTK, 0, 0, "copying Flash2x bitMap failed");
bcm_kfree(psFlash2xBitMap);
return Status;
return -EFAULT;
}
bcm_kfree(psFlash2xBitMap);
}
@ -1901,14 +1911,14 @@ static long bcm_char_ioctl(struct file *filp, UINT cmd, ULONG arg)
if(Status)
{
BCM_DEBUG_PRINT(Adapter,DBG_TYPE_PRINTK, 0, 0, "Copy of IOCTL BUFFER failed");
return Status;
return -EFAULT;
}
Status = copy_from_user(&eFlash2xSectionVal,IoBuffer.InputBuffer, sizeof(INT));
if(Status)
{
BCM_DEBUG_PRINT(Adapter,DBG_TYPE_PRINTK, 0, 0, "Copy of flash section val failed");
return Status;
return -EFAULT;
}
down(&Adapter->NVMRdmWrmLock);
@ -1945,13 +1955,13 @@ static long bcm_char_ioctl(struct file *filp, UINT cmd, ULONG arg)
if(Status)
{
BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, OSAL_DBG, DBG_LVL_ALL, "Copy of IOCTL BUFFER failed");
return Status;
return -EFAULT;
}
Status = copy_from_user((PCHAR)section,(PCHAR)&IoBuffer, sizeof(INT));
if(Status)
{
BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, OSAL_DBG, DBG_LVL_ALL, "Copy of section type failed failed");
return Status;
return -EFAULT;
}
BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, OSAL_DBG, DBG_LVL_ALL,"Read Section :%d", section);
if(section == DSD)
@ -1979,14 +1989,14 @@ static long bcm_char_ioctl(struct file *filp, UINT cmd, ULONG arg)
if(Status)
{
BCM_DEBUG_PRINT(Adapter,DBG_TYPE_PRINTK, 0, 0, "Copy of IOCTL BUFFER failed Status :%d", Status);
return Status;
return -EFAULT;
}
Status = copy_from_user(&sCopySectStrut,IoBuffer.InputBuffer, sizeof(FLASH2X_COPY_SECTION));
if(Status)
{
BCM_DEBUG_PRINT(Adapter,DBG_TYPE_PRINTK, 0, 0, "Copy of Copy_Section_Struct failed with Status :%d", Status);
return Status;
return -EFAULT;
}
BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, OSAL_DBG, DBG_LVL_ALL, "Source SEction :%x", sCopySectStrut.SrcSection);
BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, OSAL_DBG, DBG_LVL_ALL, "Destination SEction :%x", sCopySectStrut.DstSection);
@ -2057,6 +2067,7 @@ static long bcm_char_ioctl(struct file *filp, UINT cmd, ULONG arg)
if(Status)
{
BCM_DEBUG_PRINT(Adapter,DBG_TYPE_PRINTK, 0, 0, "Copy of IOCTL BUFFER failed");
Status = -EFAULT;
break;
}
if(Adapter->eNVMType != NVM_FLASH)
@ -2079,6 +2090,7 @@ static long bcm_char_ioctl(struct file *filp, UINT cmd, ULONG arg)
if(Status)
{
BCM_DEBUG_PRINT(Adapter,DBG_TYPE_PRINTK, 0, 0, "copying Flash2x cs info failed");
Status = -EFAULT;
break;
}
}
@ -2094,6 +2106,7 @@ static long bcm_char_ioctl(struct file *filp, UINT cmd, ULONG arg)
if(Status)
{
BCM_DEBUG_PRINT(Adapter,DBG_TYPE_PRINTK, 0, 0, "copying Flash CS info failed");
Status = -EFAULT;
break;
}
@ -2117,13 +2130,13 @@ static long bcm_char_ioctl(struct file *filp, UINT cmd, ULONG arg)
if(Status)
{
BCM_DEBUG_PRINT(Adapter,DBG_TYPE_PRINTK, 0, 0, "Copy of IOCTL BUFFER failed");
return Status;
return -EFAULT;
}
Status = copy_from_user(&eFlash2xSectionVal,IoBuffer.InputBuffer, sizeof(INT));
if(Status)
{
BCM_DEBUG_PRINT(Adapter,DBG_TYPE_PRINTK, 0, 0, "Copy of flash section val failed");
return Status;
return -EFAULT;
}
BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, OSAL_DBG, DBG_LVL_ALL,"Read Section :%d", eFlash2xSectionVal);
@ -2234,6 +2247,7 @@ static long bcm_char_ioctl(struct file *filp, UINT cmd, ULONG arg)
if(Status)
{
BCM_DEBUG_PRINT(Adapter,DBG_TYPE_PRINTK, 0, 0,"Copy to use failed with status :%d", Status);
Status = -EFAULT;
break;
}
NOB = NOB - ReadBytes;
@ -2259,6 +2273,7 @@ static long bcm_char_ioctl(struct file *filp, UINT cmd, ULONG arg)
if(Status)
{
BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, OSAL_DBG, DBG_LVL_ALL,"copy of Ioctl buffer is failed from user space");
Status = -EFAULT;
break;
}
@ -2266,6 +2281,7 @@ static long bcm_char_ioctl(struct file *filp, UINT cmd, ULONG arg)
if(Status)
{
BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, OSAL_DBG, DBG_LVL_ALL,"copy of control bit mask failed from user space");
Status = -EFAULT;
break;
}
BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, OSAL_DBG, DBG_LVL_ALL,"\n Got user defined cntrl msg bit mask :%lx", RxCntrlMsgBitMask);
@ -2288,6 +2304,7 @@ static long bcm_char_ioctl(struct file *filp, UINT cmd, ULONG arg)
if(Status)
{
BCM_DEBUG_PRINT(Adapter,DBG_TYPE_PRINTK, 0, 0, "Copy of IOCTL BUFFER failed");
Status = -EFAULT;
break;
}
if(IoBuffer.OutputLength < sizeof(DevInfo))
@ -2301,6 +2318,7 @@ static long bcm_char_ioctl(struct file *filp, UINT cmd, ULONG arg)
if(Status)
{
BCM_DEBUG_PRINT(Adapter,DBG_TYPE_PRINTK, 0, 0,"copying Dev info structure to user space buffer failed");
Status = -EFAULT;
break;
}
}
@ -2317,6 +2335,7 @@ static long bcm_char_ioctl(struct file *filp, UINT cmd, ULONG arg)
if(Status)
{
BCM_DEBUG_PRINT(Adapter,DBG_TYPE_PRINTK, 0, 0, "Copy of IOCTL BUFFER failed");
Status = -EFAULT;
break;
}
if(IoBuffer.OutputLength < sizeof(ST_TIME_ELAPSED))
@ -2334,6 +2353,7 @@ static long bcm_char_ioctl(struct file *filp, UINT cmd, ULONG arg)
if(Status)
{
BCM_DEBUG_PRINT(Adapter,DBG_TYPE_PRINTK, 0, 0,"copying ST_TIME_ELAPSED structure to user space buffer failed");
Status = -EFAULT;
break;
}