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bpf-program: serialize attached BPF programs across daemon reexec/reload

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Alternative to #17495
This commit is contained in:
Lennart Poettering
2021-06-08 22:02:35 +02:00
parent 7a7cf83dc3
commit b57d752326
3 changed files with 165 additions and 3 deletions
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src/shared/bpf-program.h
+7
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@@ -3,8 +3,10 @@
#include <linux/bpf.h>
#include <stdint.h>
#include <stdio.h>
#include <sys/syscall.h>
#include "fdset.h"
#include "list.h"
#include "macro.h"
@@ -38,6 +40,11 @@ int bpf_program_cgroup_detach(BPFProgram *p);
int bpf_program_pin(int prog_fd, const char *bpffs_path);
int bpf_program_get_id_by_fd(int prog_fd, uint32_t *ret_id);
int bpf_program_serialize_attachment(FILE *f, FDSet *fds, const char *key, BPFProgram *p);
int bpf_program_serialize_attachment_set(FILE *f, FDSet *fds, const char *key, Set *set);
int bpf_program_deserialize_attachment(const char *v, FDSet *fds, BPFProgram **bpfp);
int bpf_program_deserialize_attachment_set(const char *v, FDSet *fds, Set **bpfsetp);
extern const struct hash_ops bpf_program_hash_ops;
int bpf_map_new(enum bpf_map_type type, size_t key_size, size_t value_size, size_t max_entries, uint32_t flags);