[PATCH] libbpf: Return -ENODATA for missing btf section

[PATCH] libbpf: Return -ENODATA for missing btf section

[Changbin Du]

As discussed before, return -ENODATA (No data available) would be more
meaningful than ENOENT (No such file or directory).

Suggested-by: Leo Yan <leo.yan@linaro.org>
Cc: Andrii Nakryiko <andrii.nakryiko@gmail.com>
Signed-off-by: Changbin Du <changbin.du@gmail.com>
---
 tools/lib/bpf/btf.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/lib/bpf/btf.c b/tools/lib/bpf/btf.c
index dd2badf1a54e..2c89454c0136 100644
--- a/tools/lib/bpf/btf.c
+++ b/tools/lib/bpf/btf.c
@@ -991,7 +991,7 @@ static struct btf *btf_parse_elf(const char *path, struct btf *base_btf,
 
 	if (!btf_data) {
 		pr_warn("failed to find '%s' ELF section in %s\n", BTF_ELF_SEC, path);
-		err = -ENOENT;
+		err = -ENODATA;
 		goto done;
 	}
 	btf = btf_new(btf_data->d_buf, btf_data->d_size, base_btf);
-- 
2.37.2

Re: [PATCH] libbpf: Return -ENODATA for missing btf section

[patchwork-bot+netdevbpf]

Hello:

This patch was applied to bpf/bpf-next.git (master)
by Andrii Nakryiko <andrii@kernel.org>:

On Sat, 31 Dec 2022 23:14:36 +0800 you wrote:
> As discussed before, return -ENODATA (No data available) would be more
> meaningful than ENOENT (No such file or directory).
> 
> Suggested-by: Leo Yan <leo.yan@linaro.org>
> Cc: Andrii Nakryiko <andrii.nakryiko@gmail.com>
> Signed-off-by: Changbin Du <changbin.du@gmail.com>
> 
> [...]

Here is the summary with links:
  - libbpf: Return -ENODATA for missing btf section
    https://git.kernel.org/bpf/bpf-next/c/acd3b7768048

You are awesome, thank you!
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