diff options
Diffstat (limited to 'include/linux/utsname.h')
| -rw-r--r-- | include/linux/utsname.h | 40 |
1 files changed, 37 insertions, 3 deletions
diff --git a/include/linux/utsname.h b/include/linux/utsname.h index 77e97a5755d9..afa54e1542b3 100644 --- a/include/linux/utsname.h +++ b/include/linux/utsname.h @@ -1,6 +1,11 @@ #ifndef _LINUX_UTSNAME_H #define _LINUX_UTSNAME_H +#include <linux/sched.h> +#include <linux/kref.h> +#include <linux/nsproxy.h> +#include <asm/atomic.h> + #define __OLD_UTS_LEN 8 struct oldold_utsname { @@ -30,17 +35,46 @@ struct new_utsname { char domainname[65]; }; -extern struct new_utsname system_utsname; +struct uts_namespace { + struct kref kref; + struct new_utsname name; +}; +extern struct uts_namespace init_uts_ns; + +static inline void get_uts_ns(struct uts_namespace *ns) +{ + kref_get(&ns->kref); +} + +#ifdef CONFIG_UTS_NS +extern int copy_utsname(int flags, struct task_struct *tsk); +extern void free_uts_ns(struct kref *kref); + +static inline void put_uts_ns(struct uts_namespace *ns) +{ + kref_put(&ns->kref, free_uts_ns); +} +#else +static inline int copy_utsname(int flags, struct task_struct *tsk) +{ + return 0; +} +static inline void put_uts_ns(struct uts_namespace *ns) +{ +} +#endif static inline struct new_utsname *utsname(void) { - return &system_utsname; + return ¤t->nsproxy->uts_ns->name; } static inline struct new_utsname *init_utsname(void) { - return &system_utsname; + return &init_uts_ns.name; } +#define system_utsname init_uts_ns.name + extern struct rw_semaphore uts_sem; #endif |