Besides bpf_map__reuse_fd(), which could let us reuse existing map fd.
bpf_object__reuse_map() could let us reuse existing pinned maps, which
is helpful.
This functions could also be used when we add iproute2 libbpf support,
so we don't need to re-use or re-implement new functions like
bpf_obj_get()/bpf_map_selfcheck_pinned() in iproute2.
Signed-off-by: Hangbin Liu <liuhangbin@xxxxxxxxx>
---
tools/lib/bpf/libbpf.c | 3 +--
tools/lib/bpf/libbpf.h | 1 +
2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c
index 32dc444224d8..e835d7a3437f 100644
--- a/tools/lib/bpf/libbpf.c
+++ b/tools/lib/bpf/libbpf.c
@@ -4033,8 +4033,7 @@ static bool map_is_reuse_compat(const struct bpf_map *map, int map_fd)
map_info.map_flags == map->def.map_flags);
}
-static int
-bpf_object__reuse_map(struct bpf_map *map)
+int bpf_object__reuse_map(struct bpf_map *map)
{
char *cp, errmsg[STRERR_BUFSIZE];
int err, pin_fd;
diff --git a/tools/lib/bpf/libbpf.h b/tools/lib/bpf/libbpf.h
index a750f67a23f6..4b9e615eb393 100644
--- a/tools/lib/bpf/libbpf.h
+++ b/tools/lib/bpf/libbpf.h
@@ -431,6 +431,7 @@ bpf_map__prev(const struct bpf_map *map, const struct bpf_object *obj);
/* get/set map FD */
LIBBPF_API int bpf_map__fd(const struct bpf_map *map);
LIBBPF_API int bpf_map__reuse_fd(struct bpf_map *map, int fd);
+LIBBPF_API int bpf_object__reuse_map(struct bpf_map *map);
/* get map definition */
LIBBPF_API const struct bpf_map_def *bpf_map__def(const struct bpf_map *map);
/* get map name */
--
2.25.4
