diff options
| author | Ingo Molnar | 2017-02-02 10:22:42 +0100 |
|---|---|---|
| committer | Ingo Molnar | 2017-03-03 01:43:37 +0100 |
| commit | bcbb6a5bf7df6e37ba652d1f426eab042ec4f56b (patch) | |
| tree | 0dbeea711c6f93219680c4a0ddaf4096b8763db4 /include/linux/sched | |
| parent | c3edc4010e9d102eb7b8f17d15c2ebc425fed63c (diff) | |
sched/headers: Move 'struct user_struct' definition and APIs to the new <linux/sched/user.h> header
'struct user_struct' was added to sched.h historically, but it's actually
entirely independent of task_struct and of scheduler details, so move
it to its own header.
Fix up .c files using those facilities.
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'include/linux/sched')
| -rw-r--r-- | include/linux/sched/user.h | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/include/linux/sched/user.h b/include/linux/sched/user.h index 83238e5ddadd..40c6363da5ef 100644 --- a/include/linux/sched/user.h +++ b/include/linux/sched/user.h @@ -3,4 +3,58 @@ #include <linux/sched.h> +struct key; + +/* + * Some day this will be a full-fledged user tracking system.. + */ +struct user_struct { + atomic_t __count; /* reference count */ + atomic_t processes; /* How many processes does this user have? */ + atomic_t sigpending; /* How many pending signals does this user have? */ +#ifdef CONFIG_FANOTIFY + atomic_t fanotify_listeners; +#endif +#ifdef CONFIG_EPOLL + atomic_long_t epoll_watches; /* The number of file descriptors currently watched */ +#endif +#ifdef CONFIG_POSIX_MQUEUE + /* protected by mq_lock */ + unsigned long mq_bytes; /* How many bytes can be allocated to mqueue? */ +#endif + unsigned long locked_shm; /* How many pages of mlocked shm ? */ + unsigned long unix_inflight; /* How many files in flight in unix sockets */ + atomic_long_t pipe_bufs; /* how many pages are allocated in pipe buffers */ + +#ifdef CONFIG_KEYS + struct key *uid_keyring; /* UID specific keyring */ + struct key *session_keyring; /* UID's default session keyring */ +#endif + + /* Hash table maintenance information */ + struct hlist_node uidhash_node; + kuid_t uid; + +#if defined(CONFIG_PERF_EVENTS) || defined(CONFIG_BPF_SYSCALL) + atomic_long_t locked_vm; +#endif +}; + +extern int uids_sysfs_init(void); + +extern struct user_struct *find_user(kuid_t); + +extern struct user_struct root_user; +#define INIT_USER (&root_user) + + +/* per-UID process charging. */ +extern struct user_struct * alloc_uid(kuid_t); +static inline struct user_struct *get_uid(struct user_struct *u) +{ + atomic_inc(&u->__count); + return u; +} +extern void free_uid(struct user_struct *); + #endif /* _LINUX_SCHED_USER_H */ |