linux-kernel - [PATCH] tools/bpf: Return the appropriate error value

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Message-ID: <HKAPR02MB429180E153A7547C20F17915E0F40@HKAPR02MB4291.apcprd02.prod.outlook.com>
Date:   Tue, 1 Dec 2020 03:02:01 +0000
From:   彭浩(Richard) <richard.peng@...o.com>
To:     "ast@...nel.org" <ast@...nel.org>,
        "daniel@...earbox.net" <daniel@...earbox.net>
CC:     "bpf@...r.kernel.org" <bpf@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        彭浩(Richard) <richard.peng@...o.com>
Subject: [PATCH] tools/bpf: Return the appropriate error value

Compile times error:
"Error: failed to load BTF from /mnt/linux/vmlinux: No such file or directory".
This file "/mnt/linux/vmlinux" actually exists, but only because CONFIG_DEBUG_INFO_BTF
is not configured with this error.

Signed-off-by: Peng Hao <richard.peng@...o.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 231b07203e3d..228f508fbd04 100644
--- a/tools/lib/bpf/btf.c
+++ b/tools/lib/bpf/btf.c
@@ -865,7 +865,7 @@ struct btf *btf__parse_elf(const char *path, struct btf_ext **btf_ext)
        err = 0;

        if (!btf_data) {
-               err = -ENOENT;
+               err = -EPROTO;
                goto done;
        }
        btf = btf__new(btf_data->d_buf, btf_data->d_size);
--
2.18.4