From: Yuntao Wang <ytcoode@gmail.com>
Date: Wed, 23 Feb 2022 16:52:44 +0800
Subject: libbpf: Simplify the find_elf_sec_sz() function
Patch-mainline: v5.18-rc1
Git-commit: 08894d9c647aad08ddd19398e03a0aa1a70b7dc8
References: jsc#PED-1377
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@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20220223085244.3058118-1-ytcoode@gmail.com
Acked-by: Shung-Hsi Yu <shung-hsi.yu@suse.com>
---
tools/lib/bpf/libbpf.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
--- 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(
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)