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Correctness in ATA driver
[tpg/acess2.git]
/
Kernel
/
messages.c
diff --git
a/Kernel/messages.c
b/Kernel/messages.c
index
93cf6ca
..
aaedf5c
100644
(file)
--- a/
Kernel/messages.c
+++ b/
Kernel/messages.c
@@
-2,7
+2,7
@@
* AcessOS Microkernel Version
* messages.c
*/
* AcessOS Microkernel Version
* messages.c
*/
-#include <
common
.h>
+#include <
acess
.h>
#include <proc.h>
#include <errno.h>
#include <proc.h>
#include <errno.h>
@@
-12,6
+12,8
@@
* \brief Send an IPC message
* \param Err Pointer to the errno variable
* \param Dest Destination Thread
* \brief Send an IPC message
* \param Err Pointer to the errno variable
* \param Dest Destination Thread
+ * \param Length Length of the message
+ * \param Data Message data
*/
int Proc_SendMessage(Uint *Err, Uint Dest, int Length, void *Data)
{
*/
int Proc_SendMessage(Uint *Err, Uint Dest, int Length, void *Data)
{
@@
-63,6
+65,9
@@
int Proc_SendMessage(Uint *Err, Uint Dest, int Length, void *Data)
/**
* \fn int Proc_GetMessage(Uint *Err, Uint *Source, void *Buffer)
* \brief Gets a message
/**
* \fn int Proc_GetMessage(Uint *Err, Uint *Source, void *Buffer)
* \brief Gets a message
+ * \param Err Pointer to \a errno
+ * \param Source Where to put the source TID
+ * \param Buffer Buffer to place the message data (set to NULL to just get message length)
*/
int Proc_GetMessage(Uint *Err, Uint *Source, void *Buffer)
{
*/
int Proc_GetMessage(Uint *Err, Uint *Source, void *Buffer)
{
@@
-89,12
+94,20
@@
int Proc_GetMessage(Uint *Err, Uint *Source, void *Buffer)
// Get message
if(Buffer != GETMSG_IGNORE)
// Get message
if(Buffer != GETMSG_IGNORE)
+ {
+ if( !CheckMem( Buffer, cur->Messages->Length ) )
+ {
+ *Err = -EINVAL;
+ RELEASE( &cur->IsLocked );
+ return -1;
+ }
memcpy(Buffer, cur->Messages->Data, cur->Messages->Length);
memcpy(Buffer, cur->Messages->Data, cur->Messages->Length);
+ }
ret = cur->Messages->Length;
// Remove from list
tmp = cur->Messages->Next;
ret = cur->Messages->Length;
// Remove from list
tmp = cur->Messages->Next;
- free(
cur->Messages
);
+ free(
(void*)cur->Messages
);
cur->Messages = tmp;
RELEASE( &cur->IsLocked );
cur->Messages = tmp;
RELEASE( &cur->IsLocked );
UCC
git Repository :: git.ucc.asn.au