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Minimal set of helpers for net_cls classid cgroupv1 management in order to set an id, join from a process, initiate setup and teardown. cgroupv2 helpers are left as-is, but reused where possible. Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20210913230759.2313-2-daniel@iogearbox.net
29 lines
794 B
C
29 lines
794 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __CGROUP_HELPERS_H
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#define __CGROUP_HELPERS_H
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#include <errno.h>
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#include <string.h>
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#define clean_errno() (errno == 0 ? "None" : strerror(errno))
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#define log_err(MSG, ...) fprintf(stderr, "(%s:%d: errno: %s) " MSG "\n", \
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__FILE__, __LINE__, clean_errno(), ##__VA_ARGS__)
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/* cgroupv2 related */
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int cgroup_setup_and_join(const char *path);
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int create_and_get_cgroup(const char *path);
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unsigned long long get_cgroup_id(const char *path);
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int join_cgroup(const char *path);
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int setup_cgroup_environment(void);
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void cleanup_cgroup_environment(void);
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/* cgroupv1 related */
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int set_classid(unsigned int id);
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int join_classid(void);
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int setup_classid_environment(void);
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void cleanup_classid_environment(void);
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#endif /* __CGROUP_HELPERS_H */
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