[PATCH] bpf: Replace strlcpy with strscpy in preload module

From: Rui Li
Date: Sun Oct 09 2022 - 09:13:42 EST


Use strscpy instead of strlcpy as the former one checks the size
of source. Especially for this case, source strings are less than
dst size.

Signed-off-by: Rui Li <me@xxxxxxxxx>
---
kernel/bpf/preload/bpf_preload_kern.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/kernel/bpf/preload/bpf_preload_kern.c b/kernel/bpf/preload/bpf_preload_kern.c
index 5106b5372f0c..af8dd3a7c928 100644
--- a/kernel/bpf/preload/bpf_preload_kern.c
+++ b/kernel/bpf/preload/bpf_preload_kern.c
@@ -19,9 +19,9 @@ static void free_links_and_skel(void)

static int preload(struct bpf_preload_info *obj)
{
- strlcpy(obj[0].link_name, "maps.debug", sizeof(obj[0].link_name));
+ strscpy(obj[0].link_name, "maps.debug", sizeof(obj[0].link_name));
obj[0].link = maps_link;
- strlcpy(obj[1].link_name, "progs.debug", sizeof(obj[1].link_name));
+ strscpy(obj[1].link_name, "progs.debug", sizeof(obj[1].link_name));
obj[1].link = progs_link;
return 0;
}
--
2.30.2