diff options
| author |   Andrei Vagin <avagin@openvz.org> | 2019-11-12 01:26:53 +0000 |
|---|---|---|
| committer |   Thomas Gleixner <tglx@linutronix.de> | 2020-01-14 12:20:49 +0100 |
| commit | af993f58d69ee9c1f421dfc87c3ed231c113989c (patch) | |
| tree | c482a7253674ae00aad86b3907661912efc7a897 /include/linux/time_namespace.h | |
| parent | ns: Introduce Time Namespace (diff) | |
| download | linux-dev-af993f58d69ee9c1f421dfc87c3ed231c113989c.tar.xz linux-dev-af993f58d69ee9c1f421dfc87c3ed231c113989c.zip | |
time: Add timens_offsets to be used for tasks in time namespace
Introduce offsets for time namespace. They will contain an adjustment
needed to convert clocks to/from host's.
A new namespace is created with the same offsets as the time namespace
of the current process.
Co-developed-by: Dmitry Safonov <dima@arista.com>
Signed-off-by: Andrei Vagin <avagin@openvz.org>
Signed-off-by: Dmitry Safonov <dima@arista.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20191112012724.250792-5-dima@arista.com
Diffstat (limited to 'include/linux/time_namespace.h')
| -rw-r--r-- | include/linux/time_namespace.h | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/include/linux/time_namespace.h b/include/linux/time_namespace.h index 8c74cc12ad24..d7e3b4994e31 100644 --- a/include/linux/time_namespace.h +++ b/include/linux/time_namespace.h @@ -12,11 +12,17 @@ struct user_namespace; extern struct user_namespace init_user_ns; +struct timens_offsets { + struct timespec64 monotonic; + struct timespec64 boottime; +}; + struct time_namespace { struct kref kref; struct user_namespace *user_ns; struct ucounts *ucounts; struct ns_common ns; + struct timens_offsets offsets; } __randomize_layout; extern struct time_namespace init_time_ns; @@ -39,6 +45,20 @@ static inline void put_time_ns(struct time_namespace *ns) kref_put(&ns->kref, free_time_ns); } +static inline void timens_add_monotonic(struct timespec64 *ts) +{ + struct timens_offsets *ns_offsets = ¤t->nsproxy->time_ns->offsets; + + *ts = timespec64_add(*ts, ns_offsets->monotonic); +} + +static inline void timens_add_boottime(struct timespec64 *ts) +{ + struct timens_offsets *ns_offsets = ¤t->nsproxy->time_ns->offsets; + + *ts = timespec64_add(*ts, ns_offsets->boottime); +} + #else static inline struct time_namespace *get_time_ns(struct time_namespace *ns) { @@ -66,6 +86,8 @@ static inline int timens_on_fork(struct nsproxy *nsproxy, return 0; } +static inline void timens_add_monotonic(struct timespec64 *ts) { } +static inline void timens_add_boottime(struct timespec64 *ts) { } #endif #endif /* _LINUX_TIMENS_H */ |