[PATCH] net: tipc: replace deprecated strcpy with strscpy

[PATCH] net: tipc: replace deprecated strcpy with strscpy

[Ajith P V]

The `strcpy()` function is deprecated and moving towards code-tree
elimination. Replacing it with `strscpy()` fixes potential buffer
overflow vectors by ensuring safe NULL-termination based on the
destination buffer size limit [1][2].

In `tipc_bearer_get_name()`, the 'name' parameter decays into a pointer,
meaning `sizeof()` cannot capture the underlying array bounds directly.
However, all parent callers allocate this buffer using the
TIPC_MAX_BEARER_NAME macro.

Replace strcpy() with strscpy() using TIPC_MAX_BEARER_NAME as the
explicit destination bound length.

Link: https://www.kernel.org/doc/html/latest/process/deprecated.html#strcpy [1]
Link: https://github.com/KSPP/linux/issues/88 [2]

Signed-off-by: Ajith P V <ajithpv.linux@gmail.com>
---
 net/tipc/bearer.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/tipc/bearer.c b/net/tipc/bearer.c
index 05dcd2f9e887..951bb474c7d4 100644
--- a/net/tipc/bearer.c
+++ b/net/tipc/bearer.c
@@ -209,7 +209,7 @@ int tipc_bearer_get_name(struct net *net, char *name, u32 bearer_id)
 	if (!b)
 		return -EINVAL;
 
-	strcpy(name, b->name);
+	strscpy(name, b->name, TIPC_MAX_BEARER_NAME);
 	return 0;
 }
 
-- 
2.43.0