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f4199271da
This new helper allows us to obtain the fd of a net_cls cgroup, which will be utilized in the subsequent patch. Signed-off-by: Yafang Shao <laoar.shao@gmail.com> Acked-by: Tejun Heo <tj@kernel.org> Acked-by: Yonghong Song <yonghong.song@linux.dev> Link: https://lore.kernel.org/r/20231206115326.4295-3-laoar.shao@gmail.com Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
41 lines
1.3 KiB
C
41 lines
1.3 KiB
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 enable_controllers(const char *relative_path, const char *controllers);
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int write_cgroup_file(const char *relative_path, const char *file,
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const char *buf);
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int write_cgroup_file_parent(const char *relative_path, const char *file,
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const char *buf);
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int cgroup_setup_and_join(const char *relative_path);
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int get_root_cgroup(void);
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int create_and_get_cgroup(const char *relative_path);
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void remove_cgroup(const char *relative_path);
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unsigned long long get_cgroup_id(const char *relative_path);
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int get_cgroup1_hierarchy_id(const char *subsys_name);
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int join_cgroup(const char *relative_path);
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int join_root_cgroup(void);
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int join_parent_cgroup(const char *relative_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(void);
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int join_classid(void);
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unsigned long long get_classid_cgroup_id(void);
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int open_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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