95 lines
1.7 KiB
C
95 lines
1.7 KiB
C
#ifndef _LINUX_UTSNAME_H
|
|
#define _LINUX_UTSNAME_H
|
|
|
|
#define __OLD_UTS_LEN 8
|
|
|
|
struct oldold_utsname {
|
|
char sysname[9];
|
|
char nodename[9];
|
|
char release[9];
|
|
char version[9];
|
|
char machine[9];
|
|
};
|
|
|
|
#define __NEW_UTS_LEN 64
|
|
|
|
struct old_utsname {
|
|
char sysname[65];
|
|
char nodename[65];
|
|
char release[65];
|
|
char version[65];
|
|
char machine[65];
|
|
};
|
|
|
|
struct new_utsname {
|
|
char sysname[65];
|
|
char nodename[65];
|
|
char release[65];
|
|
char version[65];
|
|
char machine[65];
|
|
char domainname[65];
|
|
};
|
|
|
|
#ifdef __KERNEL__
|
|
|
|
#include <linux/sched.h>
|
|
#include <linux/kref.h>
|
|
#include <linux/nsproxy.h>
|
|
#include <asm/atomic.h>
|
|
|
|
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 unshare_utsname(unsigned long unshare_flags,
|
|
struct uts_namespace **new_uts);
|
|
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 unshare_utsname(unsigned long unshare_flags,
|
|
struct uts_namespace **new_uts)
|
|
{
|
|
if (unshare_flags & CLONE_NEWUTS)
|
|
return -EINVAL;
|
|
|
|
return 0;
|
|
}
|
|
|
|
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 ¤t->nsproxy->uts_ns->name;
|
|
}
|
|
|
|
static inline struct new_utsname *init_utsname(void)
|
|
{
|
|
return &init_uts_ns.name;
|
|
}
|
|
|
|
extern struct rw_semaphore uts_sem;
|
|
|
|
#endif /* __KERNEL__ */
|
|
|
|
#endif /* _LINUX_UTSNAME_H */
|