66 lines
1.3 KiB
C
66 lines
1.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef _LINUX_UTS_NAMESPACE_H
|
|
#define _LINUX_UTS_NAMESPACE_H
|
|
|
|
#include <linux/ns_common.h>
|
|
#include <uapi/linux/utsname.h>
|
|
|
|
struct user_namespace;
|
|
extern struct user_namespace init_user_ns;
|
|
|
|
struct uts_namespace {
|
|
struct new_utsname name;
|
|
struct user_namespace *user_ns;
|
|
struct ucounts *ucounts;
|
|
struct ns_common ns;
|
|
} __randomize_layout;
|
|
|
|
extern struct uts_namespace init_uts_ns;
|
|
|
|
#ifdef CONFIG_UTS_NS
|
|
static inline struct uts_namespace *to_uts_ns(struct ns_common *ns)
|
|
{
|
|
return container_of(ns, struct uts_namespace, ns);
|
|
}
|
|
|
|
static inline void get_uts_ns(struct uts_namespace *ns)
|
|
{
|
|
ns_ref_inc(ns);
|
|
}
|
|
|
|
extern struct uts_namespace *copy_utsname(u64 flags,
|
|
struct user_namespace *user_ns, struct uts_namespace *old_ns);
|
|
extern void free_uts_ns(struct uts_namespace *ns);
|
|
|
|
static inline void put_uts_ns(struct uts_namespace *ns)
|
|
{
|
|
if (ns_ref_put(ns))
|
|
free_uts_ns(ns);
|
|
}
|
|
|
|
void uts_ns_init(void);
|
|
#else
|
|
static inline void get_uts_ns(struct uts_namespace *ns)
|
|
{
|
|
}
|
|
|
|
static inline void put_uts_ns(struct uts_namespace *ns)
|
|
{
|
|
}
|
|
|
|
static inline struct uts_namespace *copy_utsname(u64 flags,
|
|
struct user_namespace *user_ns, struct uts_namespace *old_ns)
|
|
{
|
|
if (flags & CLONE_NEWUTS)
|
|
return ERR_PTR(-EINVAL);
|
|
|
|
return old_ns;
|
|
}
|
|
|
|
static inline void uts_ns_init(void)
|
|
{
|
|
}
|
|
#endif
|
|
|
|
#endif /* _LINUX_UTS_NAMESPACE_H */
|