projects / thirdparty / kernel / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 8703e8a4 IM |
2 | #ifndef _LINUX_SCHED_USER_H |
| 3 | #define _LINUX_SCHED_USER_H | |
| 4 | ||
| de8deb0a IM |
5 | #include <linux/uidgid.h> |
| 6 | #include <linux/atomic.h> | |
| 8703e8a4 | 7 | |
| bcbb6a5b IM |
8 | struct key; |
| 9 | ||
| 10 | /* | |
| 11 | * Some day this will be a full-fledged user tracking system.. | |
| 12 | */ | |
| 13 | struct user_struct { | |
| 14 | atomic_t __count; /* reference count */ | |
| 15 | atomic_t processes; /* How many processes does this user have? */ | |
| 16 | atomic_t sigpending; /* How many pending signals does this user have? */ | |
| 17 | #ifdef CONFIG_FANOTIFY | |
| 18 | atomic_t fanotify_listeners; | |
| 19 | #endif | |
| 20 | #ifdef CONFIG_EPOLL | |
| 21 | atomic_long_t epoll_watches; /* The number of file descriptors currently watched */ | |
| 22 | #endif | |
| 23 | #ifdef CONFIG_POSIX_MQUEUE | |
| 24 | /* protected by mq_lock */ | |
| 25 | unsigned long mq_bytes; /* How many bytes can be allocated to mqueue? */ | |
| 26 | #endif | |
| 27 | unsigned long locked_shm; /* How many pages of mlocked shm ? */ | |
| 28 | unsigned long unix_inflight; /* How many files in flight in unix sockets */ | |
| 29 | atomic_long_t pipe_bufs; /* how many pages are allocated in pipe buffers */ | |
| 30 | ||
| 31 | #ifdef CONFIG_KEYS | |
| 32 | struct key *uid_keyring; /* UID specific keyring */ | |
| 33 | struct key *session_keyring; /* UID's default session keyring */ | |
| 34 | #endif | |
| 35 | ||
| 36 | /* Hash table maintenance information */ | |
| 37 | struct hlist_node uidhash_node; | |
| 38 | kuid_t uid; | |
| 39 | ||
| a91dbff5 WB |
40 | #if defined(CONFIG_PERF_EVENTS) || defined(CONFIG_BPF_SYSCALL) || \ |
| 41 | defined(CONFIG_NET) | |
| bcbb6a5b IM |
42 | atomic_long_t locked_vm; |
| 43 | #endif | |
| 44 | }; | |
| 45 | ||
| 46 | extern int uids_sysfs_init(void); | |
| 47 | ||
| 48 | extern struct user_struct *find_user(kuid_t); | |
| 49 | ||
| 50 | extern struct user_struct root_user; | |
| 51 | #define INIT_USER (&root_user) | |
| 52 | ||
| 53 | ||
| 54 | /* per-UID process charging. */ | |
| 55 | extern struct user_struct * alloc_uid(kuid_t); | |
| 56 | static inline struct user_struct *get_uid(struct user_struct *u) | |
| 57 | { | |
| 58 | atomic_inc(&u->__count); | |
| 59 | return u; | |
| 60 | } | |
| 61 | extern void free_uid(struct user_struct *); | |
| 62 | ||
| 8703e8a4 | 63 | #endif /* _LINUX_SCHED_USER_H */ |