1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | #include <stdbool.h> |
3 | #include <stdlib.h> |
4 | |
5 | #include "../kselftest.h" |
6 | |
7 | #define PAGE_SIZE 4096 |
8 | |
9 | #define MB(x) (x << 20) |
10 | |
11 | #define USEC_PER_SEC 1000000L |
12 | #define NSEC_PER_SEC 1000000000L |
13 | |
14 | #define TEST_UID 65534 /* usually nobody, any !root is fine */ |
15 | |
16 | /* |
17 | * Checks if two given values differ by less than err% of their sum. |
18 | */ |
19 | static inline int values_close(long a, long b, int err) |
20 | { |
21 | return abs(a - b) <= (a + b) / 100 * err; |
22 | } |
23 | |
24 | extern int cg_find_unified_root(char *root, size_t len); |
25 | extern char *cg_name(const char *root, const char *name); |
26 | extern char *cg_name_indexed(const char *root, const char *name, int index); |
27 | extern char *cg_control(const char *cgroup, const char *control); |
28 | extern int cg_create(const char *cgroup); |
29 | extern int cg_destroy(const char *cgroup); |
30 | extern int cg_read(const char *cgroup, const char *control, |
31 | char *buf, size_t len); |
32 | extern int cg_read_strcmp(const char *cgroup, const char *control, |
33 | const char *expected); |
34 | extern int cg_read_strstr(const char *cgroup, const char *control, |
35 | const char *needle); |
36 | extern long cg_read_long(const char *cgroup, const char *control); |
37 | long cg_read_key_long(const char *cgroup, const char *control, const char *key); |
38 | extern long cg_read_lc(const char *cgroup, const char *control); |
39 | extern int cg_write(const char *cgroup, const char *control, char *buf); |
40 | int cg_write_numeric(const char *cgroup, const char *control, long value); |
41 | extern int cg_run(const char *cgroup, |
42 | int (*fn)(const char *cgroup, void *arg), |
43 | void *arg); |
44 | extern int cg_enter(const char *cgroup, int pid); |
45 | extern int cg_enter_current(const char *cgroup); |
46 | extern int cg_enter_current_thread(const char *cgroup); |
47 | extern int cg_run_nowait(const char *cgroup, |
48 | int (*fn)(const char *cgroup, void *arg), |
49 | void *arg); |
50 | extern int get_temp_fd(void); |
51 | extern int alloc_pagecache(int fd, size_t size); |
52 | extern int alloc_anon(const char *cgroup, void *arg); |
53 | extern int is_swap_enabled(void); |
54 | extern int set_oom_adj_score(int pid, int score); |
55 | extern int cg_wait_for_proc_count(const char *cgroup, int count); |
56 | extern int cg_killall(const char *cgroup); |
57 | int proc_mount_contains(const char *option); |
58 | extern ssize_t proc_read_text(int pid, bool thread, const char *item, char *buf, size_t size); |
59 | extern int proc_read_strstr(int pid, bool thread, const char *item, const char *needle); |
60 | extern pid_t clone_into_cgroup(int cgroup_fd); |
61 | extern int clone_reap(pid_t pid, int options); |
62 | extern int clone_into_cgroup_run_wait(const char *cgroup); |
63 | extern int dirfd_open_opath(const char *dir); |
64 | extern int cg_prepare_for_wait(const char *cgroup); |
65 | extern int memcg_prepare_for_wait(const char *cgroup); |
66 | extern int cg_wait_for(int fd); |
67 | |