1 #ifndef _LINUX_SCHED_USER_H
2 #define _LINUX_SCHED_USER_H
4 #include <linux/uidgid.h>
5 #include <linux/atomic.h>
10 * Some day this will be a full-fledged user tracking system..
13 atomic_t __count
; /* reference count */
14 atomic_t processes
; /* How many processes does this user have? */
15 atomic_t sigpending
; /* How many pending signals does this user have? */
16 #ifdef CONFIG_FANOTIFY
17 atomic_t fanotify_listeners
;
20 atomic_long_t epoll_watches
; /* The number of file descriptors currently watched */
22 #ifdef CONFIG_POSIX_MQUEUE
23 /* protected by mq_lock */
24 unsigned long mq_bytes
; /* How many bytes can be allocated to mqueue? */
26 unsigned long locked_shm
; /* How many pages of mlocked shm ? */
27 unsigned long unix_inflight
; /* How many files in flight in unix sockets */
28 atomic_long_t pipe_bufs
; /* how many pages are allocated in pipe buffers */
31 struct key
*uid_keyring
; /* UID specific keyring */
32 struct key
*session_keyring
; /* UID's default session keyring */
35 /* Hash table maintenance information */
36 struct hlist_node uidhash_node
;
39 #if defined(CONFIG_PERF_EVENTS) || defined(CONFIG_BPF_SYSCALL)
40 atomic_long_t locked_vm
;
44 extern int uids_sysfs_init(void);
46 extern struct user_struct
*find_user(kuid_t
);
48 extern struct user_struct root_user
;
49 #define INIT_USER (&root_user)
52 /* per-UID process charging. */
53 extern struct user_struct
* alloc_uid(kuid_t
);
54 static inline struct user_struct
*get_uid(struct user_struct
*u
)
56 atomic_inc(&u
->__count
);
59 extern void free_uid(struct user_struct
*);
61 #endif /* _LINUX_SCHED_USER_H */