Replace snprintf("%s", ...) with the faster and more direct strscpy().
Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
---
Changes in v2:
- Keep snprintf("%s", ...) in btf_show_name() as suggested by Alexei
- Update patch title
- Link to v1: https://lore.kernel.org/lkml/20260201180445.664056-2-thorsten.blum@linux.dev/
---
kernel/bpf/btf.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/kernel/bpf/btf.c b/kernel/bpf/btf.c
index 8959f3bc1e92..7708958e3fb8 100644
--- a/kernel/bpf/btf.c
+++ b/kernel/bpf/btf.c
@@ -25,6 +25,7 @@
#include <linux/perf_event.h>
#include <linux/bsearch.h>
#include <linux/kobject.h>
+#include <linux/string.h>
#include <linux/sysfs.h>
#include <linux/overflow.h>
@@ -6324,7 +6325,7 @@ static struct btf *btf_parse_base(struct btf_verifier_env *env, const char *name
btf->data_size = data_size;
btf->kernel_btf = true;
btf->named_start_id = 0;
- snprintf(btf->name, sizeof(btf->name), "%s", name);
+ strscpy(btf->name, name);
err = btf_parse_hdr(env);
if (err)
@@ -6443,7 +6444,7 @@ static struct btf *btf_parse_module(const char *module_name, const void *data,
btf->start_str_off = base_btf->hdr.str_len;
btf->kernel_btf = true;
btf->named_start_id = 0;
- snprintf(btf->name, sizeof(btf->name), "%s", module_name);
+ strscpy(btf->name, module_name);
btf->data = kvmemdup(data, data_size, GFP_KERNEL | __GFP_NOWARN);
if (!btf->data) {
--
Thorsten Blum <thorsten.blum@linux.dev>
GPG: 1D60 735E 8AEF 3BE4 73B6 9D84 7336 78FD 8DFE EAD4