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authorAlexei Starovoitov <ast@kernel.org>2021-05-13 17:36:18 -0700
committerDaniel Borkmann <daniel@iogearbox.net>2021-05-19 00:40:56 +0200
commit7723256bf2443d6bd7db3e583953d14107955233 (patch)
treeb650411ac6e6ac55547b4816a96955a4759b29b1 /tools/lib/bpf/libbpf.h
parentlibbpf: Cleanup temp FDs when intermediate sys_bpf fails. (diff)
downloadlinux-dev-7723256bf2443d6bd7db3e583953d14107955233.tar.xz
linux-dev-7723256bf2443d6bd7db3e583953d14107955233.zip
libbpf: Introduce bpf_map__initial_value().
Introduce bpf_map__initial_value() to read initial contents of mmaped data/rodata/bss maps. Note that bpf_map__set_initial_value() doesn't allow modifying kconfig map while bpf_map__initial_value() allows reading its values. Signed-off-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20210514003623.28033-17-alexei.starovoitov@gmail.com
Diffstat (limited to 'tools/lib/bpf/libbpf.h')
-rw-r--r--tools/lib/bpf/libbpf.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/tools/lib/bpf/libbpf.h b/tools/lib/bpf/libbpf.h
index 46b31c1f4849..d98523558f39 100644
--- a/tools/lib/bpf/libbpf.h
+++ b/tools/lib/bpf/libbpf.h
@@ -471,6 +471,7 @@ LIBBPF_API int bpf_map__set_priv(struct bpf_map *map, void *priv,
LIBBPF_API void *bpf_map__priv(const struct bpf_map *map);
LIBBPF_API int bpf_map__set_initial_value(struct bpf_map *map,
const void *data, size_t size);
+LIBBPF_API const void *bpf_map__initial_value(struct bpf_map *map, size_t *psize);
LIBBPF_API bool bpf_map__is_offload_neutral(const struct bpf_map *map);
LIBBPF_API bool bpf_map__is_internal(const struct bpf_map *map);
LIBBPF_API int bpf_map__set_pin_path(struct bpf_map *map, const char *path);