diff options
Diffstat (limited to 'ipc/util.h')
| -rw-r--r-- | ipc/util.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/ipc/util.h b/ipc/util.h index 1ee81bce25e9..d768fdbed515 100644 --- a/ipc/util.h +++ b/ipc/util.h @@ -217,6 +217,15 @@ int ipcget(struct ipc_namespace *ns, struct ipc_ids *ids, void free_ipcs(struct ipc_namespace *ns, struct ipc_ids *ids, void (*free)(struct ipc_namespace *, struct kern_ipc_perm *)); +static inline int sem_check_semmni(struct ipc_namespace *ns) { + /* + * Check semmni range [0, IPCMNI] + * semmni is the last element of sem_ctls[4] array + */ + return ((ns->sem_ctls[3] < 0) || (ns->sem_ctls[3] > IPCMNI)) + ? -ERANGE : 0; +} + #ifdef CONFIG_COMPAT #include <linux/compat.h> struct compat_ipc_perm { |