1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */
2*4882a593Smuzhiyun #include <stdbool.h>
3*4882a593Smuzhiyun #include <stdlib.h>
4*4882a593Smuzhiyun
5*4882a593Smuzhiyun #define PAGE_SIZE 4096
6*4882a593Smuzhiyun
7*4882a593Smuzhiyun #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
8*4882a593Smuzhiyun
9*4882a593Smuzhiyun #define MB(x) (x << 20)
10*4882a593Smuzhiyun
11*4882a593Smuzhiyun /*
12*4882a593Smuzhiyun * Checks if two given values differ by less than err% of their sum.
13*4882a593Smuzhiyun */
values_close(long a,long b,int err)14*4882a593Smuzhiyun static inline int values_close(long a, long b, int err)
15*4882a593Smuzhiyun {
16*4882a593Smuzhiyun return abs(a - b) <= (a + b) / 100 * err;
17*4882a593Smuzhiyun }
18*4882a593Smuzhiyun
19*4882a593Smuzhiyun extern int cg_find_unified_root(char *root, size_t len);
20*4882a593Smuzhiyun extern char *cg_name(const char *root, const char *name);
21*4882a593Smuzhiyun extern char *cg_name_indexed(const char *root, const char *name, int index);
22*4882a593Smuzhiyun extern char *cg_control(const char *cgroup, const char *control);
23*4882a593Smuzhiyun extern int cg_create(const char *cgroup);
24*4882a593Smuzhiyun extern int cg_destroy(const char *cgroup);
25*4882a593Smuzhiyun extern int cg_read(const char *cgroup, const char *control,
26*4882a593Smuzhiyun char *buf, size_t len);
27*4882a593Smuzhiyun extern int cg_read_strcmp(const char *cgroup, const char *control,
28*4882a593Smuzhiyun const char *expected);
29*4882a593Smuzhiyun extern int cg_read_strstr(const char *cgroup, const char *control,
30*4882a593Smuzhiyun const char *needle);
31*4882a593Smuzhiyun extern long cg_read_long(const char *cgroup, const char *control);
32*4882a593Smuzhiyun long cg_read_key_long(const char *cgroup, const char *control, const char *key);
33*4882a593Smuzhiyun extern long cg_read_lc(const char *cgroup, const char *control);
34*4882a593Smuzhiyun extern int cg_write(const char *cgroup, const char *control, char *buf);
35*4882a593Smuzhiyun extern int cg_run(const char *cgroup,
36*4882a593Smuzhiyun int (*fn)(const char *cgroup, void *arg),
37*4882a593Smuzhiyun void *arg);
38*4882a593Smuzhiyun extern int cg_enter(const char *cgroup, int pid);
39*4882a593Smuzhiyun extern int cg_enter_current(const char *cgroup);
40*4882a593Smuzhiyun extern int cg_enter_current_thread(const char *cgroup);
41*4882a593Smuzhiyun extern int cg_run_nowait(const char *cgroup,
42*4882a593Smuzhiyun int (*fn)(const char *cgroup, void *arg),
43*4882a593Smuzhiyun void *arg);
44*4882a593Smuzhiyun extern int get_temp_fd(void);
45*4882a593Smuzhiyun extern int alloc_pagecache(int fd, size_t size);
46*4882a593Smuzhiyun extern int alloc_anon(const char *cgroup, void *arg);
47*4882a593Smuzhiyun extern int is_swap_enabled(void);
48*4882a593Smuzhiyun extern int set_oom_adj_score(int pid, int score);
49*4882a593Smuzhiyun extern int cg_wait_for_proc_count(const char *cgroup, int count);
50*4882a593Smuzhiyun extern int cg_killall(const char *cgroup);
51*4882a593Smuzhiyun extern ssize_t proc_read_text(int pid, bool thread, const char *item, char *buf, size_t size);
52*4882a593Smuzhiyun extern int proc_read_strstr(int pid, bool thread, const char *item, const char *needle);
53*4882a593Smuzhiyun extern pid_t clone_into_cgroup(int cgroup_fd);
54*4882a593Smuzhiyun extern int clone_reap(pid_t pid, int options);
55*4882a593Smuzhiyun extern int clone_into_cgroup_run_wait(const char *cgroup);
56*4882a593Smuzhiyun extern int dirfd_open_opath(const char *dir);
57