[PATCH] More ->pid to ->tgid changes

One more overlooked area where the proper process ID has to be used:
SysV IPC "pid" values should use the thread group ID, not the per-thread
one.

ipc/msg.c

@@ -707,7 +707,7 @@ asmlinkage long sys_msgsnd (int msqid, struct msgbuf *msgp, size_t msgsz, int ms
 		goto retry;
 	}
 
-	msq->q_lspid = current->pid;
+	msq->q_lspid = current->tgid;
 	msq->q_stime = get_seconds();
 
 	if(!pipelined_send(msq,msg)) {
@@ -801,7 +801,7 @@ asmlinkage long sys_msgrcv (int msqid, struct msgbuf *msgp, size_t msgsz,
 		list_del(&msg->m_list);
 		msq->q_qnum--;
 		msq->q_rtime = get_seconds();
-		msq->q_lrpid = current->pid;
+		msq->q_lrpid = current->tgid;
 		msq->q_cbytes -= msg->m_ts;
 		atomic_sub(msg->m_ts,&msg_bytes);
 		atomic_dec(&msg_hdrs);

ipc/sem.c

@@ -664,7 +664,7 @@ static int semctl_main(int semid, int semnum, int cmd, int version, union semun
 		for (un = sma->undo; un; un = un->id_next)
 			un->semadj[semnum] = 0;
 		curr->semval = val;
-		curr->sempid = current->pid;
+		curr->sempid = current->tgid;
 		sma->sem_ctime = get_seconds();
 		/* maybe some queued-up processes were waiting for this */
 		update_queue(sma);
@@ -1052,7 +1052,7 @@ asmlinkage long sys_semtimedop(int semid, struct sembuf __user *tsops,
 	if (error)
 		goto out_unlock_free;
 
-	error = try_atomic_semop (sma, sops, nsops, un, current->pid);
+	error = try_atomic_semop (sma, sops, nsops, un, current->tgid);
 	if (error <= 0)
 		goto update;
 
@@ -1064,7 +1064,7 @@ asmlinkage long sys_semtimedop(int semid, struct sembuf __user *tsops,
 	queue.sops = sops;
 	queue.nsops = nsops;
 	queue.undo = un;
-	queue.pid = current->pid;
+	queue.pid = current->tgid;
 	queue.id = semid;
 	if (alter)
 		append_to_queue(sma ,&queue);
@@ -1206,7 +1206,7 @@ void exit_sem(struct task_struct *tsk)
 				sem->semval += u->semadj[i];
 				if (sem->semval < 0)
 					sem->semval = 0; /* shouldn't happen */
-				sem->sempid = current->pid;
+				sem->sempid = current->tgid;
 			}
 		}
 		sma->sem_otime = get_seconds();

ipc/shm.c

@@ -89,7 +89,7 @@ static inline void shm_inc (int id) {
 	if(!(shp = shm_lock(id)))
 		BUG();
 	shp->shm_atim = get_seconds();
-	shp->shm_lprid = current->pid;
+	shp->shm_lprid = current->tgid;
 	shp->shm_nattch++;
 	shm_unlock(shp);
 }
@@ -136,7 +136,7 @@ static void shm_close (struct vm_area_struct *shmd)
 	/* remove from the list of attaches of the shm segment */
 	if(!(shp = shm_lock(id)))
 		BUG();
-	shp->shm_lprid = current->pid;
+	shp->shm_lprid = current->tgid;
 	shp->shm_dtim = get_seconds();
 	shp->shm_nattch--;
 	if(shp->shm_nattch == 0 &&
@@ -209,7 +209,7 @@ static int newseg (key_t key, int shmflg, size_t size)
 	if(id == -1) 
 		goto no_id;
 
-	shp->shm_cprid = current->pid;
+	shp->shm_cprid = current->tgid;
 	shp->shm_lprid = 0;
 	shp->shm_atim = shp->shm_dtim = 0;
 	shp->shm_ctim = get_seconds();