#define _LINUX_IPC_H
#include <linux/types.h>
-#include <linux/kref.h>
#define IPC_PRIVATE ((__kernel_key_t) 0)
#ifdef __KERNEL__
+#include <linux/kref.h>
+
#define IPCMNI 32768 /* <= MAX_INT limit for ipc arrays (including sysctl changes) */
/* used by in-kernel data structures */
};
extern struct ipc_namespace init_ipc_ns;
+
+#ifdef CONFIG_SYSVIPC
+#define INIT_IPC_NS(ns) .ns = &init_ipc_ns,
+#else
+#define INIT_IPC_NS(ns)
+#endif
+
+#ifdef CONFIG_IPC_NS
extern void free_ipc_ns(struct kref *kref);
extern int copy_ipcs(unsigned long flags, struct task_struct *tsk);
extern int unshare_ipcs(unsigned long flags, struct ipc_namespace **ns);
+#else
+static inline int copy_ipcs(unsigned long flags, struct task_struct *tsk)
+{
+ return 0;
+}
+#endif
static inline struct ipc_namespace *get_ipc_ns(struct ipc_namespace *ns)
{
+#ifdef CONFIG_IPC_NS
if (ns)
kref_get(&ns->kref);
+#endif
return ns;
}
static inline void put_ipc_ns(struct ipc_namespace *ns)
{
+#ifdef CONFIG_IPC_NS
kref_put(&ns->kref, free_ipc_ns);
+#endif
}
#endif /* __KERNEL__ */