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tools/bpftool: Fix error handing in do_skeleton() 

Fix pass 0 to PTR_ERR, also dump more err info using
libbpf_strerror.

Fixes: 5dc7a8b211 ("bpftool, selftests/bpf: Embed object file inside skeleton")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Reviewed-by: Quentin Monnet <quentin@isovalent.com>
Link: https://lore.kernel.org/bpf/20200717123059.29624-1-yuehaibing@huawei.com
This commit is contained in:
YueHaibing 2020-07-17 20:30:59 +08:00 committed by Alexei Starovoitov
parent da7a35062b
commit 956fcfcd35
1 changed files with 4 additions and 1 deletions
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5
tools/bpf/bpftool/gen.c
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@ -302,8 +302,11 @@ static int do_skeleton(int argc, char **argv)
opts.object_name = obj_name;
obj = bpf_object__open_mem(obj_data, file_sz, &opts);
if (IS_ERR(obj)) {
char err_buf[256];
libbpf_strerror(PTR_ERR(obj), err_buf, sizeof(err_buf));
p_err("failed to open BPF object file: %s", err_buf);
obj = NULL;
p_err("failed to open BPF object file: %ld", PTR_ERR(obj));
goto out;
}