[PATCH net-next] netfilter: x_tables: Remove unnecessary strscpy() size arguments

From: Thorsten Blum
Date: Wed Mar 19 2025 - 15:50:34 EST


If the destination buffer has a fixed length, both strscpy_pad() and
strscpy() automatically determine its size using sizeof() when the
argument is omitted. This makes the explicit sizeof() calls unnecessary.
Remove them.

No functional changes intended.

Signed-off-by: Thorsten Blum <thorsten.blum@xxxxxxxxx>
---
net/netfilter/x_tables.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/net/netfilter/x_tables.c b/net/netfilter/x_tables.c
index 709840612f0d..8607852dadec 100644
--- a/net/netfilter/x_tables.c
+++ b/net/netfilter/x_tables.c
@@ -766,9 +766,9 @@ void xt_compat_match_from_user(struct xt_entry_match *m, void **dstptr,

msize += off;
m->u.user.match_size = msize;
- strscpy(name, match->name, sizeof(name));
+ strscpy(name, match->name);
module_put(match->me);
- strscpy_pad(m->u.user.name, name, sizeof(m->u.user.name));
+ strscpy_pad(m->u.user.name, name);

*size += off;
*dstptr += msize;
@@ -1147,9 +1147,9 @@ void xt_compat_target_from_user(struct xt_entry_target *t, void **dstptr,

tsize += off;
t->u.user.target_size = tsize;
- strscpy(name, target->name, sizeof(name));
+ strscpy(name, target->name);
module_put(target->me);
- strscpy_pad(t->u.user.name, name, sizeof(t->u.user.name));
+ strscpy_pad(t->u.user.name, name);

*size += off;
*dstptr += tsize;