tools lib bpf: Retrive bpf_map through offset of bpf_map_def (5a6acad1) · Commits · 戴 / test

tools/lib/bpf/libbpf.c

+12 −0

Original line number	Original line	Diff line number	Diff line
	@@ -1524,3 +1524,15 @@ bpf_object__find_map_by_name(struct bpf_object obj, const char name)
	}		}
	return NULL;		return NULL;
	}		}

			struct bpf_map *
			bpf_object__find_map_by_offset(struct bpf_object *obj, size_t offset)
			{
			int i;

			for (i = 0; i < obj->nr_maps; i++) {
			if (obj->maps[i].offset == offset)
			return &obj->maps[i];
			}
			return ERR_PTR(-ENOENT);
			}

+8 −0

Original line number	Original line	Diff line number	Diff line
	@@ -24,6 +24,7 @@
	#include <stdio.h>		#include <stdio.h>
	#include <stdbool.h>		#include <stdbool.h>
	#include <linux/err.h>		#include <linux/err.h>
			#include <sys/types.h> // for size_t

	enum libbpf_errno {		enum libbpf_errno {
	__LIBBPF_ERRNO__START = 4000,		__LIBBPF_ERRNO__START = 4000,
	@@ -200,6 +201,13 @@ struct bpf_map;
	struct bpf_map *		struct bpf_map *
	bpf_object__find_map_by_name(struct bpf_object obj, const char name);		bpf_object__find_map_by_name(struct bpf_object obj, const char name);

			/*
			* Get bpf_map through the offset of corresponding struct bpf_map_def
			* in the bpf object file.
			*/
			struct bpf_map *
			bpf_object__find_map_by_offset(struct bpf_object *obj, size_t offset);

	struct bpf_map *		struct bpf_map *
	bpf_map__next(struct bpf_map map, struct bpf_object obj);		bpf_map__next(struct bpf_map map, struct bpf_object obj);
	#define bpf_map__for_each(pos, obj) \		#define bpf_map__for_each(pos, obj) \