Commenting for new function

[tpg/acess2.git] / Kernel / threads.c

diff --git a/Kernel/threads.c b/Kernel/threads.c
index dd7cfcd..075350d 100644 (file)
--- a/Kernel/threads.c
+++ b/Kernel/threads.c
@@ -3,7 +3,7 @@
  * threads.c
  * - Common Thread Control
  */
-#include <common.h>
+#include <acess.h>
 #include <threads.h>
 #include <errno.h>
 
@@ -41,8 +41,10 @@ void Threads_Wake(tThread *Thread);
 void   Threads_AddActive(tThread *Thread);
  int   Threads_GetPID();
  int   Threads_GetTID();
- int   Threads_GetUID();
- int   Threads_GetGID();
+tUID   Threads_GetUID();
+ int   Threads_SetUID(Uint *Errno, tUID ID);
+tGID   Threads_GetGID();
+ int   Threads_SetGID(Uint *Errno, tUID ID);
 void   Threads_Dump();
 
 // === GLOBALS ===
@@ -335,7 +337,7 @@ void Threads_AddToDelete(tThread *Thread)
 }
 
 /**
- * \fn tThread *Threads_int_GetPrev(tThread *List, tThread *Thread)
+ * \fn tThread *Threads_int_GetPrev(tThread **List, tThread *Thread)
  * \brief Gets the previous entry in a thead linked list
  */
 tThread *Threads_int_GetPrev(tThread **List, tThread *Thread)
@@ -373,7 +375,8 @@ void Threads_Exit(int TID, int Status)
 /**
  * \fn void Threads_Kill(tThread *Thread, int Status)
  * \brief Kill a thread
- * \param TID  Thread ID (0 for current)
+ * \param Thread       Thread to kill
+ * \param Status       Status code to return to the parent
  */
 void Threads_Kill(tThread *Thread, int Status)
 {
@@ -464,7 +467,7 @@ void Threads_Sleep()
        tThread *cur = Proc_GetCurThread();
        tThread *thread;
        
-       //Log("Proc_Sleep: %i going to sleep", cur->TID);
+       Log("Proc_Sleep: %i going to sleep", cur->TID);
        
        // Acquire Spinlock
        LOCK( &giThreadListLock );
@@ -472,7 +475,8 @@ void Threads_Sleep()
        // Get thread before current thread
        thread = Threads_int_GetPrev( &gActiveThreads, cur );
        if(!thread) {
-               Warning("Proc_Sleep - Current thread is not on the active queue");
+               Warning("Threads_Sleep - Current thread is not on the active queue");
+               Threads_Dump();
                return;
        }
        
@@ -502,11 +506,11 @@ void Threads_Sleep()
        // Release Spinlock
        RELEASE( &giThreadListLock );
        
-       HALT();
+       while(cur->Status != THREAD_STAT_ACTIVE)        HALT();
 }
 
 
-/**c0108919:
+/**
  * \fn void Threads_Wake( tThread *Thread )
  * \brief Wakes a sleeping/waiting thread up
  */
@@ -606,23 +610,47 @@ void Threads_SendSignal(int TID, int Num)
 #endif
 
 // --- Process Structure Access Functions ---
-int Threads_GetPID()
+tPID Threads_GetPID()
 {
        return Proc_GetCurThread()->TGID;
 }
-int Threads_GetTID()
+tTID Threads_GetTID()
 {
        return Proc_GetCurThread()->TID;
 }
-int Threads_GetUID()
+tUID Threads_GetUID()
 {
        return Proc_GetCurThread()->UID;
 }
-int Threads_GetGID()
+tGID Threads_GetGID()
 {
        return Proc_GetCurThread()->GID;
 }
 
+int Threads_SetUID(Uint *Errno, tUID ID)
+{
+       tThread *t = Proc_GetCurThread();
+       if( t->UID != 0 ) {
+               *Errno = -EACCES;
+               return -1;
+       }
+       Log("Threads_SetUID - Setting User ID to %i", ID);
+       t->UID = ID;
+       return 0;
+}
+
+int Threads_SetGID(Uint *Errno, tGID ID)
+{
+       tThread *t = Proc_GetCurThread();
+       if( t->UID != 0 ) {
+               *Errno = -EACCES;
+               return -1;
+       }
+       Log("Threads_SetGID - Setting Group ID to %i", ID);
+       t->GID = ID;
+       return 0;
+}
+
 /**
  * \fn void Threads_Dump()
  * \brief Dums a list of currently running threads
@@ -630,18 +658,23 @@ int Threads_GetGID()
 void Threads_Dump()
 {
        tThread *thread;
+       tThread *cur = Proc_GetCurThread();
        
        Log("Active Threads:");
        for(thread=gActiveThreads;thread;thread=thread->Next)
        {
-               Log(" %i (%i) - %s", thread->TID, thread->TGID, thread->ThreadName);
+               Log("%c%i (%i) - %s",
+                       (thread==cur?'*':' '),
+                       thread->TID, thread->TGID, thread->ThreadName);
                Log("  %i Tickets, Quantum %i", thread->NumTickets, thread->Quantum);
                Log("  KStack 0x%x", thread->KernelStack);
        }
        Log("Sleeping Threads:");
        for(thread=gSleepingThreads;thread;thread=thread->Next)
        {
-               Log(" %i (%i) - %s", thread->TID, thread->TGID, thread->ThreadName);
+               Log("%c%i (%i) - %s",
+                       (thread==cur?'*':' '),
+                       thread->TID, thread->TGID, thread->ThreadName);
                Log("  %i Tickets, Quantum %i", thread->NumTickets, thread->Quantum);
                Log("  KStack 0x%x", thread->KernelStack);
        }
@@ -701,3 +734,6 @@ void Threads_SegFault(tVAddr Addr)
        Warning("Thread #%i committed a segfault at address %p", Proc_GetCurThread()->TID, Addr);
        Threads_Exit( 0, -1 );
 }
+
+// === EXPORTS ===
+EXPORT(Threads_GetUID);