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tools lib bpf: Add libbpf_get_error()

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This function will turn a libbpf pointer into a standard error code (or
0 if the pointer is valid).

This also allows removal of the dependency on linux/err.h in the public
header file, which causes problems in userspace programs built against
libbpf.

Signed-off-by: Joe Stringer <joe@ovn.org>
Acked-by: Wang Nan <wangnan0@huawei.com>
Cc: Alexei Starovoitov <ast@fb.com>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: netdev@vger.kernel.org
Link: http://lkml.kernel.org/r/20170123011128.26534-5-joe@ovn.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Joe Stringer
2017-01-22 17:11:25 -08:00
committed by Arnaldo Carvalho de Melo
parent 7803ba7309
commit e28ff1a838
3 changed files with 12 additions and 2 deletions
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2
tools/perf/tests/llvm.c
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@@ -13,7 +13,7 @@ static int test__bpf_parsing(void *obj_buf, size_t obj_buf_sz)
struct bpf_object *obj;
obj = bpf_object__open_buffer(obj_buf, obj_buf_sz, NULL);
if (IS_ERR(obj))
if (libbpf_get_error(obj))
return TEST_FAIL;
bpf_object__close(obj);
return TEST_OK;