1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef __CGROUP_HELPERS_H 3 #define __CGROUP_HELPERS_H 4 5 #include <errno.h> 6 #include <string.h> 7 8 #define clean_errno() (errno == 0 ? "None" : strerror(errno)) 9 #define log_err(MSG, ...) fprintf(stderr, "(%s:%d: errno: %s) " MSG "\n", \ 10 __FILE__, __LINE__, clean_errno(), ##__VA_ARGS__) 11 12 /* cgroupv2 related */ 13 int enable_controllers(const char *relative_path, const char *controllers); 14 int write_cgroup_file(const char *relative_path, const char *file, 15 const char *buf); 16 int write_cgroup_file_parent(const char *relative_path, const char *file, 17 const char *buf); 18 int read_cgroup_file(const char *relative_path, const char *file, 19 char *buf, size_t len); 20 int read_cgroup_file_parent(const char *relative_path, const char *file, 21 char *buf, size_t len); 22 int cgroup_setup_and_join(const char *relative_path); 23 int get_root_cgroup(void); 24 int create_and_get_cgroup(const char *relative_path); 25 void remove_cgroup(const char *relative_path); 26 void remove_cgroup_pid(const char *relative_path, int pid); 27 unsigned long long get_cgroup_id(const char *relative_path); 28 int get_cgroup1_hierarchy_id(const char *subsys_name); 29 30 int join_cgroup(const char *relative_path); 31 int join_root_cgroup(void); 32 int join_parent_cgroup(const char *relative_path); 33 34 int set_cgroup_xattr(const char *relative_path, 35 const char *name, 36 const char *value); 37 38 int setup_cgroup_environment(void); 39 void cleanup_cgroup_environment(void); 40 41 /* cgroupv1 related */ 42 int set_classid(void); 43 int join_classid(void); 44 unsigned long long get_classid_cgroup_id(void); 45 int open_classid(void); 46 47 int setup_classid_environment(void); 48 void cleanup_classid_environment(void); 49 50 #endif /* __CGROUP_HELPERS_H */ 51