mirror of
https://github.com/morgan9e/systemd
synced 2026-04-15 00:47:10 +09:00
f102bc3e5f
Let's not leak details from src/shared and src/libsystemd into src/basic, even though you can't actually do anything useful with just forward declarations from src/shared. The sd-forward.h header is put in src/libsystemd/sd-common as we don't have a directory for shared internal headers for libsystemd yet. Let's also rename forward.h to basic-forward.h to keep things self-explanatory.
59 lines
2.5 KiB
C
59 lines
2.5 KiB
C
/* SPDX-License-Identifier: LGPL-2.1-or-later */
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#pragma once
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#include "shared-forward.h"
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/* This encapsulates three different concepts: the loaded BPF program, the BPF code, and the attachment to a
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* cgroup. Typically our BPF programs go through all three stages: we build the code, we load it, and finally
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* we attach it, but it might happen that we operate with programs that aren't loaded or aren't attached, or
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* where we don't have the code. */
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typedef struct BPFProgram {
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/* The loaded BPF program, if loaded */
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int kernel_fd;
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uint32_t prog_type;
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char *prog_name;
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/* The code of it BPF program, if known */
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size_t n_instructions;
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struct bpf_insn *instructions;
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/* The cgroup path the program is attached to, if it is attached. If non-NULL bpf_program_unref()
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* will detach on destruction. */
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char *attached_path;
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int attached_type;
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uint32_t attached_flags;
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} BPFProgram;
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int bpf_program_supported(void);
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int bpf_program_new(uint32_t prog_type, const char *prog_name, BPFProgram **ret);
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int bpf_program_new_from_bpffs_path(const char *path, BPFProgram **ret);
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BPFProgram *bpf_program_free(BPFProgram *p);
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int bpf_program_add_instructions(BPFProgram *p, const struct bpf_insn *insn, size_t count);
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int bpf_program_load_kernel(BPFProgram *p, char *log_buf, size_t log_size);
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int bpf_program_load_from_bpf_fs(BPFProgram *p, const char *path);
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int bpf_program_cgroup_attach(BPFProgram *p, int type, const char *path, uint32_t flags);
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int bpf_program_cgroup_detach(BPFProgram *p);
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int bpf_program_pin(int prog_fd, const char *bpffs_path);
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int bpf_program_get_id_by_fd(int prog_fd, uint32_t *ret_id);
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int bpf_program_serialize_attachment(FILE *f, FDSet *fds, const char *key, BPFProgram *p);
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int bpf_program_serialize_attachment_set(FILE *f, FDSet *fds, const char *key, Set *set);
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int bpf_program_deserialize_attachment(const char *v, FDSet *fds, BPFProgram **bpfp);
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int bpf_program_deserialize_attachment_set(const char *v, FDSet *fds, Set **bpfsetp);
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extern const struct hash_ops bpf_program_hash_ops;
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int bpf_map_new(const char *name, enum bpf_map_type type, size_t key_size, size_t value_size,
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size_t max_entries, uint32_t flags);
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int bpf_map_update_element(int fd, const void *key, void *value);
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int bpf_map_lookup_element(int fd, const void *key, void *value);
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int bpf_cgroup_attach_type_from_string(const char *str) _pure_;
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const char* bpf_cgroup_attach_type_to_string(int attach_type) _const_;
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DEFINE_TRIVIAL_CLEANUP_FUNC(BPFProgram*, bpf_program_free);
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