shaba/systemd-stable
1
1
Fork 0
mirror of https://github.com/systemd/systemd-stable.git synced 2024-12-24 21:34:08 +03:00
Code

shared/bpf-dlopen: expose more libbpf functions

Browse Source 
They're needed for the LSM BPF feature.
This commit is contained in:
Iago López Galeiras 2021-07-12 12:18:31 +02:00 committed by Iago Lopez Galeiras
parent d13b60d8af
commit 510cdbeb5b
2 changed files with 12 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
src/shared/bpf-dlopen.c
View File

@ -8,13 +8,17 @@
static void *bpf_dl = NULL;
struct bpf_link* (*sym_bpf_program__attach_cgroup)(struct bpf_program *, int);
struct bpf_link* (*sym_bpf_program__attach_lsm)(struct bpf_program *);
long (*sym_libbpf_get_error)(const void *);
int (*sym_bpf_link__fd)(const struct bpf_link *);
int (*sym_bpf_link__destroy)(struct bpf_link *);
int (*sym_bpf_map__fd)(const struct bpf_map *);
const char* (*sym_bpf_map__name)(const struct bpf_map *);
int (*sym_bpf_create_map)(enum bpf_map_type, int key_size, int value_size, int max_entries, __u32 map_flags);
int (*sym_bpf_map__resize)(struct bpf_map *, __u32);
int (*sym_bpf_map_update_elem)(int, const void *, const void *, __u64);
int (*sym_bpf_map_delete_elem)(int, const void *);
int (*sym_bpf_map__set_inner_map_fd)(struct bpf_map *, int);
int (*sym_bpf_object__open_skeleton)(struct bpf_object_skeleton *, const struct bpf_object_open_opts *);
int (*sym_bpf_object__load_skeleton)(struct bpf_object_skeleton *);
int (*sym_bpf_object__attach_skeleton)(struct bpf_object_skeleton *);
@ -30,8 +34,11 @@ int dlopen_bpf(void) {
DLSYM_ARG(bpf_link__fd),
DLSYM_ARG(bpf_map__fd),
DLSYM_ARG(bpf_map__name),
DLSYM_ARG(bpf_create_map),
DLSYM_ARG(bpf_map__resize),
DLSYM_ARG(bpf_map_update_elem),
DLSYM_ARG(bpf_map_delete_elem),
DLSYM_ARG(bpf_map__set_inner_map_fd),
DLSYM_ARG(bpf_object__open_skeleton),
DLSYM_ARG(bpf_object__load_skeleton),
DLSYM_ARG(bpf_object__attach_skeleton),
@ -39,6 +46,7 @@ int dlopen_bpf(void) {
DLSYM_ARG(bpf_object__destroy_skeleton),
DLSYM_ARG(bpf_probe_prog_type),
DLSYM_ARG(bpf_program__attach_cgroup),
DLSYM_ARG(bpf_program__attach_lsm),
DLSYM_ARG(bpf_program__name),
DLSYM_ARG(libbpf_get_error));
}

4
src/shared/bpf-dlopen.h
View File

@ -7,13 +7,17 @@
#include <bpf/libbpf.h>
extern struct bpf_link* (*sym_bpf_program__attach_cgroup)(struct bpf_program *, int);
extern struct bpf_link* (*sym_bpf_program__attach_lsm)(struct bpf_program *);
extern long (*sym_libbpf_get_error)(const void *);
extern int (*sym_bpf_link__fd)(const struct bpf_link *);
extern int (*sym_bpf_link__destroy)(struct bpf_link *);
extern int (*sym_bpf_map__fd)(const struct bpf_map *);
extern const char* (*sym_bpf_map__name)(const struct bpf_map *);
extern int (*sym_bpf_create_map)(enum bpf_map_type, int key_size, int value_size, int max_entries, __u32 map_flags);
extern int (*sym_bpf_map__resize)(struct bpf_map *, __u32);
extern int (*sym_bpf_map_update_elem)(int, const void *, const void *, __u64);
extern int (*sym_bpf_map_delete_elem)(int, const void *);
extern int (*sym_bpf_map__set_inner_map_fd)(struct bpf_map *, int);
/* The *_skeleton APIs are autogenerated by bpftool, the targets can be found
* in ./build/src/core/bpf/socket_bind/socket-bind.skel.h */
extern int (*sym_bpf_object__open_skeleton)(struct bpf_object_skeleton *, const struct bpf_object_open_opts *);