diff options
| -rw-r--r-- | tools/lib/bpf/libbpf.c | 21 |
1 files changed, 20 insertions, 1 deletions
diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c index 22bf3b189947..cccfd9355134 100644 --- a/tools/lib/bpf/libbpf.c +++ b/tools/lib/bpf/libbpf.c @@ -657,6 +657,21 @@ bpf_object__init_license(struct bpf_object *obj, void *data, size_t size) return 0; } +static int +bpf_object__init_kversion(struct bpf_object *obj, void *data, size_t size) +{ + __u32 kver; + + if (size != sizeof(kver)) { + pr_warning("invalid kver section in %s\n", obj->path); + return -LIBBPF_ERRNO__FORMAT; + } + memcpy(&kver, data, sizeof(kver)); + obj->kern_version = kver; + pr_debug("kernel version of %s is %x\n", obj->path, obj->kern_version); + return 0; +} + static int compare_bpf_map(const void *_a, const void *_b) { const struct bpf_map *a = _a; @@ -1574,7 +1589,11 @@ static int bpf_object__elf_collect(struct bpf_object *obj, bool relaxed_maps) if (err) return err; } else if (strcmp(name, "version") == 0) { - /* skip, we don't need it anymore */ + err = bpf_object__init_kversion(obj, + data->d_buf, + data->d_size); + if (err) + return err; } else if (strcmp(name, "maps") == 0) { obj->efile.maps_shndx = idx; } else if (strcmp(name, MAPS_ELF_SEC) == 0) { |