projects / linux-block.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> | |
| 1e1c1583 | 7 | #include <linux/percpu_counter.h> |
| fc371912 | 8 | #include <linux/refcount.h> |
| bef3efbe | 9 | #include <linux/ratelimit.h> |
| 8703e8a4 | 10 | |
| bcbb6a5b IM |
11 | /* |
| 12 | * Some day this will be a full-fledged user tracking system.. | |
| 13 | */ | |
| 14 | struct user_struct { | |
| fc371912 | 15 | refcount_t __count; /* reference count */ |
| bcbb6a5b | 16 | #ifdef CONFIG_EPOLL |
| 1e1c1583 | 17 | struct percpu_counter epoll_watches; /* The number of file descriptors currently watched */ |
| bcbb6a5b | 18 | #endif |
| bcbb6a5b IM |
19 | unsigned long unix_inflight; /* How many files in flight in unix sockets */ |
| 20 | atomic_long_t pipe_bufs; /* how many pages are allocated in pipe buffers */ | |
| 21 | ||
| bcbb6a5b IM |
22 | /* Hash table maintenance information */ |
| 23 | struct hlist_node uidhash_node; | |
| 24 | kuid_t uid; | |
| 25 | ||
| a91dbff5 | 26 | #if defined(CONFIG_PERF_EVENTS) || defined(CONFIG_BPF_SYSCALL) || \ |
| 3c5a1b6f | 27 | defined(CONFIG_NET) || defined(CONFIG_IO_URING) || \ |
| ce5a23c8 | 28 | defined(CONFIG_VFIO_PCI_ZDEV_KVM) || IS_ENABLED(CONFIG_IOMMUFD) |
| bcbb6a5b IM |
29 | atomic_long_t locked_vm; |
| 30 | #endif | |
| 29e44f45 DH |
31 | #ifdef CONFIG_WATCH_QUEUE |
| 32 | atomic_t nr_watches; /* The number of watches this user currently has */ | |
| 33 | #endif | |
| bef3efbe LT |
34 | |
| 35 | /* Miscellaneous per-user rate limit */ | |
| 36 | struct ratelimit_state ratelimit; | |
| bcbb6a5b IM |
37 | }; |
| 38 | ||
| 39 | extern int uids_sysfs_init(void); | |
| 40 | ||
| 41 | extern struct user_struct *find_user(kuid_t); | |
| 42 | ||
| 43 | extern struct user_struct root_user; | |
| 44 | #define INIT_USER (&root_user) | |
| 45 | ||
| 46 | ||
| 47 | /* per-UID process charging. */ | |
| 48 | extern struct user_struct * alloc_uid(kuid_t); | |
| 49 | static inline struct user_struct *get_uid(struct user_struct *u) | |
| 50 | { | |
| fc371912 | 51 | refcount_inc(&u->__count); |
| bcbb6a5b IM |
52 | return u; |
| 53 | } | |
| 54 | extern void free_uid(struct user_struct *); | |
| 55 | ||
| 8703e8a4 | 56 | #endif /* _LINUX_SCHED_USER_H */ |