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Message-Id: <20220223085244.3058118-1-ytcoode@gmail.com>
Date: Wed, 23 Feb 2022 16:52:44 +0800
From: Yuntao Wang <ytcoode@...il.com>
To: bpf@...r.kernel.org
Cc: Alexei Starovoitov <ast@...nel.org>,
Daniel Borkmann <daniel@...earbox.net>,
Andrii Nakryiko <andrii@...nel.org>,
Martin KaFai Lau <kafai@...com>,
Song Liu <songliubraving@...com>, Yonghong Song <yhs@...com>,
John Fastabend <john.fastabend@...il.com>,
KP Singh <kpsingh@...nel.org>, netdev@...r.kernel.org,
linux-kernel@...r.kernel.org, Yuntao Wang <ytcoode@...il.com>
Subject: [PATCH bpf-next] libbpf: Simplify the find_elf_sec_sz() function
The check in the last return statement is unnecessary, we can just return
the ret variable.
But we can simplify the function further by returning 0 immediately if we
find the section size and -ENOENT otherwise.
Thus we can also remove the ret variable.
Signed-off-by: Yuntao Wang <ytcoode@...il.com>
---
tools/lib/bpf/libbpf.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c
index 7e978feaf822..776b8e034d62 100644
--- a/tools/lib/bpf/libbpf.c
+++ b/tools/lib/bpf/libbpf.c
@@ -1374,22 +1374,20 @@ static bool bpf_map_type__is_map_in_map(enum bpf_map_type type)
static int find_elf_sec_sz(const struct bpf_object *obj, const char *name, __u32 *size)
{
- int ret = -ENOENT;
Elf_Data *data;
Elf_Scn *scn;
- *size = 0;
if (!name)
return -EINVAL;
scn = elf_sec_by_name(obj, name);
data = elf_sec_data(obj, scn);
if (data) {
- ret = 0; /* found it */
*size = data->d_size;
+ return 0; /* found it */
}
- return *size ? 0 : ret;
+ return -ENOENT;
}
static int find_elf_var_offset(const struct bpf_object *obj, const char *name, __u32 *off)
--
2.35.0.rc2
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