From: Andrii Nakryiko andrii@kernel.org
mainline inclusion from mainline-5.13-rc1 commit e14ef4bf011192b61b48c4f3a35b3041140073ff category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/I5EUVD CVE: NA
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?i...
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btf_type_by_id() is internal-only convenience API returning non-const pointer to struct btf_type. Expose it outside of btf.c for re-use.
Signed-off-by: Andrii Nakryiko andrii@kernel.org Signed-off-by: Alexei Starovoitov ast@kernel.org Link: https://lore.kernel.org/bpf/20210318194036.3521577-2-andrii@kernel.org (cherry picked from commit e14ef4bf011192b61b48c4f3a35b3041140073ff) Signed-off-by: Wang Yufen wangyufen@huawei.com --- tools/lib/bpf/btf.c | 2 +- tools/lib/bpf/libbpf_internal.h | 5 +++++ 2 files changed, 6 insertions(+), 1 deletion(-)
diff --git a/tools/lib/bpf/btf.c b/tools/lib/bpf/btf.c index 3a944a487e7e..27091759aa81 100644 --- a/tools/lib/bpf/btf.c +++ b/tools/lib/bpf/btf.c @@ -441,7 +441,7 @@ const struct btf *btf__base_btf(const struct btf *btf) }
/* internal helper returning non-const pointer to a type */ -static struct btf_type *btf_type_by_id(struct btf *btf, __u32 type_id) +struct btf_type *btf_type_by_id(struct btf *btf, __u32 type_id) { if (type_id == 0) return &btf_void; diff --git a/tools/lib/bpf/libbpf_internal.h b/tools/lib/bpf/libbpf_internal.h index 343f6eb05637..d09860e435c8 100644 --- a/tools/lib/bpf/libbpf_internal.h +++ b/tools/lib/bpf/libbpf_internal.h @@ -107,6 +107,11 @@ static inline void *libbpf_reallocarray(void *ptr, size_t nmemb, size_t size) return realloc(ptr, total); }
+struct btf; +struct btf_type; + +struct btf_type *btf_type_by_id(struct btf *btf, __u32 type_id); + void *btf_add_mem(void **data, size_t *cap_cnt, size_t elem_sz, size_t cur_cnt, size_t max_cnt, size_t add_cnt); int btf_ensure_mem(void **data, size_t *cap_cnt, size_t elem_sz, size_t need_cnt);