diff options
Diffstat (limited to 'ipc')
| -rw-r--r-- | ipc/sem.c | 22 |
1 files changed, 12 insertions, 10 deletions
diff --git a/ipc/sem.c b/ipc/sem.c index d661c491b0a5..47b263960524 100644 --- a/ipc/sem.c +++ b/ipc/sem.c @@ -98,7 +98,7 @@ struct sem { * - semctl, via SETVAL and SETALL. * - at task exit when performing undo adjustments (see exit_sem). */ - int sempid; + struct pid *sempid; spinlock_t lock; /* spinlock for fine-grained semtimedop */ struct list_head pending_alter; /* pending single-sop operations */ /* that alter the semaphore */ @@ -128,7 +128,7 @@ struct sem_queue { struct list_head list; /* queue of pending operations */ struct task_struct *sleeper; /* this process */ struct sem_undo *undo; /* undo structure */ - int pid; /* process id of requesting process */ + struct pid *pid; /* process id of requesting process */ int status; /* completion status of operation */ struct sembuf *sops; /* array of pending operations */ struct sembuf *blocking; /* the operation that blocked */ @@ -628,7 +628,8 @@ SYSCALL_DEFINE3(semget, key_t, key, int, nsems, int, semflg) */ static int perform_atomic_semop_slow(struct sem_array *sma, struct sem_queue *q) { - int result, sem_op, nsops, pid; + int result, sem_op, nsops; + struct pid *pid; struct sembuf *sop; struct sem *curr; struct sembuf *sops; @@ -666,7 +667,7 @@ static int perform_atomic_semop_slow(struct sem_array *sma, struct sem_queue *q) sop--; pid = q->pid; while (sop >= sops) { - sma->sems[sop->sem_num].sempid = pid; + ipc_update_pid(&sma->sems[sop->sem_num].sempid, pid); sop--; } @@ -753,7 +754,7 @@ static int perform_atomic_semop(struct sem_array *sma, struct sem_queue *q) un->semadj[sop->sem_num] = undo; } curr->semval += sem_op; - curr->sempid = q->pid; + ipc_update_pid(&curr->sempid, q->pid); } return 0; @@ -1160,6 +1161,7 @@ static void freeary(struct ipc_namespace *ns, struct kern_ipc_perm *ipcp) unlink_queue(sma, q); wake_up_sem_queue_prepare(q, -EIDRM, &wake_q); } + ipc_update_pid(&sem->sempid, NULL); } /* Remove the semaphore set from the IDR */ @@ -1352,7 +1354,7 @@ static int semctl_setval(struct ipc_namespace *ns, int semid, int semnum, un->semadj[semnum] = 0; curr->semval = val; - curr->sempid = task_tgid_vnr(current); + ipc_update_pid(&curr->sempid, task_tgid(current)); sma->sem_ctime = ktime_get_real_seconds(); /* maybe some queued-up processes were waiting for this */ do_smart_update(sma, NULL, 0, 0, &wake_q); @@ -1473,7 +1475,7 @@ static int semctl_main(struct ipc_namespace *ns, int semid, int semnum, for (i = 0; i < nsems; i++) { sma->sems[i].semval = sem_io[i]; - sma->sems[i].sempid = task_tgid_vnr(current); + ipc_update_pid(&sma->sems[i].sempid, task_tgid(current)); } ipc_assert_locked_object(&sma->sem_perm); @@ -1505,7 +1507,7 @@ static int semctl_main(struct ipc_namespace *ns, int semid, int semnum, err = curr->semval; goto out_unlock; case GETPID: - err = curr->sempid; + err = pid_vnr(curr->sempid); goto out_unlock; case GETNCNT: err = count_semcnt(sma, semnum, 0); @@ -2024,7 +2026,7 @@ static long do_semtimedop(int semid, struct sembuf __user *tsops, queue.sops = sops; queue.nsops = nsops; queue.undo = un; - queue.pid = task_tgid_vnr(current); + queue.pid = task_tgid(current); queue.alter = alter; queue.dupsop = dupsop; @@ -2318,7 +2320,7 @@ void exit_sem(struct task_struct *tsk) semaphore->semval = 0; if (semaphore->semval > SEMVMX) semaphore->semval = SEMVMX; - semaphore->sempid = task_tgid_vnr(current); + ipc_update_pid(&semaphore->sempid, task_tgid(current)); } } /* maybe some queued-up processes were waiting for this */ |