linux-stable/tools/testing/selftests/bpf/cgroup_helpers.h
Yucong Sun e87c3434f8 selftests/bpf: Add per worker cgroup suffix
This patch make each worker use a unique cgroup base directory, thus
allowing tests that uses cgroups to run concurrently.

Signed-off-by: Yucong Sun <sunyucong@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20211006185619.364369-5-fallentree@fb.com
2021-10-08 14:45:18 -07:00

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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __CGROUP_HELPERS_H
#define __CGROUP_HELPERS_H
#include <errno.h>
#include <string.h>
#define clean_errno() (errno == 0 ? "None" : strerror(errno))
#define log_err(MSG, ...) fprintf(stderr, "(%s:%d: errno: %s) " MSG "\n", \
__FILE__, __LINE__, clean_errno(), ##__VA_ARGS__)
/* cgroupv2 related */
int cgroup_setup_and_join(const char *path);
int create_and_get_cgroup(const char *path);
unsigned long long get_cgroup_id(const char *path);
int join_cgroup(const char *path);
int setup_cgroup_environment(void);
void cleanup_cgroup_environment(void);
/* cgroupv1 related */
int set_classid(unsigned int id);
int join_classid(void);
int setup_classid_environment(void);
void cleanup_classid_environment(void);
#endif /* __CGROUP_HELPERS_H */