diff options
Diffstat (limited to 'ipc/sem.c')
| -rw-r--r-- | ipc/sem.c | 17 |
1 files changed, 14 insertions, 3 deletions
diff --git a/ipc/sem.c b/ipc/sem.c index 35952c0bae4..d65e285b7e3 100644 --- a/ipc/sem.c +++ b/ipc/sem.c @@ -143,6 +143,7 @@ int sem_init_ns(struct ipc_namespace *ns) void sem_exit_ns(struct ipc_namespace *ns) { struct sem_array *sma; + struct kern_ipc_perm *perm; int next_id; int total, in_use; @@ -151,10 +152,11 @@ void sem_exit_ns(struct ipc_namespace *ns) in_use = sem_ids(ns).in_use; for (total = 0, next_id = 0; total < in_use; next_id++) { - sma = idr_find(&sem_ids(ns).ipcs_idr, next_id); - if (sma == NULL) + perm = idr_find(&sem_ids(ns).ipcs_idr, next_id); + if (perm == NULL) continue; - ipc_lock_by_ptr(&sma->sem_perm); + ipc_lock_by_ptr(perm); + sma = container_of(perm, struct sem_array, sem_perm); freeary(ns, sma); total++; } @@ -181,6 +183,9 @@ static inline struct sem_array *sem_lock_check_down(struct ipc_namespace *ns, { struct kern_ipc_perm *ipcp = ipc_lock_check_down(&sem_ids(ns), id); + if (IS_ERR(ipcp)) + return (struct sem_array *)ipcp; + return container_of(ipcp, struct sem_array, sem_perm); } @@ -192,6 +197,9 @@ static inline struct sem_array *sem_lock(struct ipc_namespace *ns, int id) { struct kern_ipc_perm *ipcp = ipc_lock(&sem_ids(ns), id); + if (IS_ERR(ipcp)) + return (struct sem_array *)ipcp; + return container_of(ipcp, struct sem_array, sem_perm); } @@ -200,6 +208,9 @@ static inline struct sem_array *sem_lock_check(struct ipc_namespace *ns, { struct kern_ipc_perm *ipcp = ipc_lock_check(&sem_ids(ns), id); + if (IS_ERR(ipcp)) + return (struct sem_array *)ipcp; + return container_of(ipcp, struct sem_array, sem_perm); } |