X-Git-Url: https://git.ucc.asn.au/?a=blobdiff_plain;f=Kernel%2Fsyscalls.c;h=523b3f2ae3a502f1e9d43382acedfcb67093cab8;hb=ca05044548d5c1de87c030d625a305731a6cc665;hp=ba9051a92cb24ff96231fec60a8cdf8ffedf1cb2;hpb=7514bb8053931759b99f77d3f9ad70446b0625ac;p=tpg%2Facess2.git

diff --git a/Kernel/syscalls.c b/Kernel/syscalls.c
index ba9051a9..523b3f2a 100644
--- a/Kernel/syscalls.c
+++ b/Kernel/syscalls.c
@@ -28,8 +28,10 @@ extern Uint	Binary_Load(char *file, Uint *entryPoint);
 extern int	Threads_SetName(char *NewName);
 extern int	Threads_GetPID();
 extern int	Threads_GetTID();
-extern int	Threads_GetUID();
-extern int	Threads_GetGID();
+extern tUID	Threads_GetUID();
+extern int	Threads_SetUID(Uint *errno, tUID ID);
+extern tGID	Threads_GetGID();
+extern int	Threads_SetGID(Uint *errno, tGID ID);
 
 // === PROTOTYPES ===
  int	Syscall_ValidString(Uint Addr);
@@ -40,7 +42,7 @@ extern int	Threads_GetGID();
 void SyscallHandler(tSyscallRegs *Regs)
 {
 	Uint64	ret = 0;
-	Uint	err = 0;
+	Uint	err = -EOK;
 	
 	ENTER("iThread iNum", Threads_GetTID(), Regs->Num);
 	if(Regs->Num < NUM_SYSCALLS)
@@ -104,8 +106,8 @@ void SyscallHandler(tSyscallRegs *Regs)
 	case SYS_GETGID:	ret = Threads_GetGID();	break;
 	
 	// -- Set User/Group IDs
-	case SYS_SETUID:	Log("Setting User ID to %i", Regs->Arg1);	break;
-	case SYS_SETGID:	Log("Setting Group ID to %i", Regs->Arg1);	break;
+	case SYS_SETUID:	ret = Threads_SetUID(&err, Regs->Arg1);	break;
+	case SYS_SETGID:	ret = Threads_SetGID(&err, Regs->Arg1);	break;
 	
 	// -- Send Message
 	case SYS_SENDMSG:
@@ -116,9 +118,10 @@ void SyscallHandler(tSyscallRegs *Regs)
 	// -- Check for messages
 	case SYS_GETMSG:
 		CHECK_NUM_NULLOK(Regs->Arg1, sizeof(Uint));
-		//NOTE: Uncertain due to length being unknown
-		// (Proc_GetMessage should check itself)
-		CHECK_NUM_NULLOK(Regs->Arg2, sizeof(Uint)*4);
+		if( Regs->Arg2 && Regs->Arg2 != -1 && !MM_IsUser(Regs->Arg2) )
+		{
+			err = -EINVAL;	ret = -1;	break;
+		}
 		// *Source, *Data
 		ret = Proc_GetMessage(&err, (Uint*)Regs->Arg1, (void*)Regs->Arg2);
 		break;