cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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utsname.h (1827B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2#ifndef _LINUX_UTSNAME_H
      3#define _LINUX_UTSNAME_H
      4
      5
      6#include <linux/sched.h>
      7#include <linux/nsproxy.h>
      8#include <linux/ns_common.h>
      9#include <linux/err.h>
     10#include <uapi/linux/utsname.h>
     11
     12enum uts_proc {
     13	UTS_PROC_OSTYPE,
     14	UTS_PROC_OSRELEASE,
     15	UTS_PROC_VERSION,
     16	UTS_PROC_HOSTNAME,
     17	UTS_PROC_DOMAINNAME,
     18};
     19
     20struct user_namespace;
     21extern struct user_namespace init_user_ns;
     22
     23struct uts_namespace {
     24	struct new_utsname name;
     25	struct user_namespace *user_ns;
     26	struct ucounts *ucounts;
     27	struct ns_common ns;
     28} __randomize_layout;
     29extern struct uts_namespace init_uts_ns;
     30
     31#ifdef CONFIG_UTS_NS
     32static inline void get_uts_ns(struct uts_namespace *ns)
     33{
     34	refcount_inc(&ns->ns.count);
     35}
     36
     37extern struct uts_namespace *copy_utsname(unsigned long flags,
     38	struct user_namespace *user_ns, struct uts_namespace *old_ns);
     39extern void free_uts_ns(struct uts_namespace *ns);
     40
     41static inline void put_uts_ns(struct uts_namespace *ns)
     42{
     43	if (refcount_dec_and_test(&ns->ns.count))
     44		free_uts_ns(ns);
     45}
     46
     47void uts_ns_init(void);
     48#else
     49static inline void get_uts_ns(struct uts_namespace *ns)
     50{
     51}
     52
     53static inline void put_uts_ns(struct uts_namespace *ns)
     54{
     55}
     56
     57static inline struct uts_namespace *copy_utsname(unsigned long flags,
     58	struct user_namespace *user_ns, struct uts_namespace *old_ns)
     59{
     60	if (flags & CLONE_NEWUTS)
     61		return ERR_PTR(-EINVAL);
     62
     63	return old_ns;
     64}
     65
     66static inline void uts_ns_init(void)
     67{
     68}
     69#endif
     70
     71#ifdef CONFIG_PROC_SYSCTL
     72extern void uts_proc_notify(enum uts_proc proc);
     73#else
     74static inline void uts_proc_notify(enum uts_proc proc)
     75{
     76}
     77#endif
     78
     79static inline struct new_utsname *utsname(void)
     80{
     81	return &current->nsproxy->uts_ns->name;
     82}
     83
     84static inline struct new_utsname *init_utsname(void)
     85{
     86	return &init_uts_ns.name;
     87}
     88
     89extern struct rw_semaphore uts_sem;
     90
     91#endif /* _LINUX_UTSNAME_H */