| From | Wang Nan <> | Subject | [RFC PATCH v3 26/37] bpf tools: Introduce accessors for struct bpf_object | Date | Sun, 17 May 2015 10:56:51 +0000 |
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This patch add an accessor which allows caller to get count of programs in an object file.
Signed-off-by: Wang Nan <wangnan0@huawei.com> --- tools/lib/bpf/libbpf.c | 9 +++++++++ tools/lib/bpf/libbpf.h | 3 +++ 2 files changed, 12 insertions(+)
diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c index d770adc..89c725a 100644 --- a/tools/lib/bpf/libbpf.c +++ b/tools/lib/bpf/libbpf.c @@ -964,6 +964,15 @@ void bpf_close_object(struct bpf_object *obj) free(obj); } +int bpf_obj_get_prog_cnt(struct bpf_object *obj, size_t *pcnt) +{ + if (!obj || !pcnt) + return -EINVAL; + + *pcnt = obj->nr_programs; + return 0; +} + static inline struct bpf_program * handler_to_prog(struct bpf_prog_handler *handler) { diff --git a/tools/lib/bpf/libbpf.h b/tools/lib/bpf/libbpf.h index b451d1a..31ff5d9 100644 --- a/tools/lib/bpf/libbpf.h +++ b/tools/lib/bpf/libbpf.h @@ -26,6 +26,9 @@ void bpf_close_object(struct bpf_object *object); int bpf_load_object(struct bpf_object *obj); int bpf_unload_object(struct bpf_object *obj); +/* Accessors of bpf_object */ +int bpf_obj_get_prog_cnt(struct bpf_object *obj, size_t *pcnt); + /* Accessors of bpf_program. */ struct bpf_prog_handler; struct bpf_prog_handler *bpf_next_prog(struct bpf_object *obj, -- 1.8.3.4
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