diff options
| author |   Roman Gushchin <guro@fb.com> | 2017-12-13 15:18:52 +0000 |
|---|---|---|
| committer |   Daniel Borkmann <daniel@iogearbox.net> | 2017-12-14 13:37:13 +0100 |
| commit | fe4d44b23f6b38194a92c6b8a50d921a071c4db4 (patch) | |
| tree | dd1959a59dfadb4d0b7d9e534cc48a69cec005dc /tools | |
| parent | libbpf: add ability to guess program type based on section name (diff) | |
| download | linux-dev-fe4d44b23f6b38194a92c6b8a50d921a071c4db4.tar.xz linux-dev-fe4d44b23f6b38194a92c6b8a50d921a071c4db4.zip | |
libbpf: prefer global symbols as bpf program name source
Libbpf picks the name of the first symbol in the corresponding
elf section to use as a program name. But without taking symbol's
scope into account it may end's up with some local label
as a program name. E.g.:
$ bpftool prog
1: type 15 name LBB0_10 tag 0390a5136ba23f5c
loaded_at Dec 07/17:22 uid 0
xlated 456B not jited memlock 4096B
Fix this by preferring global symbols as program name.
For instance:
$ bpftool prog
1: type 15 name bpf_prog1 tag 0390a5136ba23f5c
loaded_at Dec 07/17:26 uid 0
xlated 456B not jited memlock 4096B
Signed-off-by: Roman Gushchin <guro@fb.com>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Jakub Kicinski <jakub.kicinski@netronome.com>
Cc: Martin KaFai Lau <kafai@fb.com>
Cc: Quentin Monnet <quentin.monnet@netronome.com>
Cc: David Ahern <dsahern@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/lib/bpf/libbpf.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c index 205b7822fa0a..65d0d0aff4fa 100644 --- a/tools/lib/bpf/libbpf.c +++ b/tools/lib/bpf/libbpf.c @@ -387,6 +387,8 @@ bpf_object__init_prog_names(struct bpf_object *obj) continue; if (sym.st_shndx != prog->idx) continue; + if (GELF_ST_BIND(sym.st_info) != STB_GLOBAL) + continue; name = elf_strptr(obj->efile.elf, obj->efile.strtabidx, |