Messages in this thread Patch in this message | | | From | Wang Nan <> | Subject | [RFC PATCH v5 11/30] bpf tools: Collect symbol table from SHT_SYMTAB section | Date | Mon, 1 Jun 2015 07:37:57 +0000 |
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This patch collects symbols section. This section is useful when linking ELF maps.
Signed-off-by: Wang Nan <wangnan0@huawei.com> --- tools/lib/bpf/libbpf.c | 10 ++++++++++ 1 file changed, 10 insertions(+)
diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c index 5f9b3da..9d40f27 100644 --- a/tools/lib/bpf/libbpf.c +++ b/tools/lib/bpf/libbpf.c @@ -92,6 +92,7 @@ struct bpf_object { int fd; Elf *elf; GElf_Ehdr ehdr; + Elf_Data *symbols; } efile; char path[]; }; @@ -121,6 +122,7 @@ static void bpf_object__elf_finish(struct bpf_object *obj) elf_end(obj->efile.elf); obj->efile.elf = NULL; } + obj->efile.symbols = NULL; zclose(obj->efile.fd); } @@ -306,6 +308,14 @@ static int bpf_object__elf_collect(struct bpf_object *obj) else if (strcmp(name, "maps") == 0) err = bpf_object__init_maps(obj, data->d_buf, data->d_size); + else if (sh.sh_type == SHT_SYMTAB) { + if (obj->efile.symbols) { + pr_warning("bpf: multiple SYMTAB in %s\n", + obj->path); + err = -EEXIST; + } else + obj->efile.symbols = data; + } if (err) goto out; } -- 1.8.3.4
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