net/9p: Replace strlen() strcpy() pair with strscpy()

Use the result of strscpy() for the overflow check.

Signed-off-by: David Laight <david.laight.linux@gmail.com>
Message-ID: <20260606202744.5113-3-david.laight.linux@gmail.com>
Signed-off-by: Dominique Martinet <asmadeus@codewreck.org>

diff --git a/net/9p/trans_fd.c b/net/9p/trans_fd.c
index dbad3213ba84b905d7dd4899b3e02f743a474355..eb685b52aeb26440d9e2c922f4e3ce2a69df61f7 100644 (file)
--- a/net/9p/trans_fd.c
+++ b/net/9p/trans_fd.c
@@ -940,14 +940,12 @@ p9_fd_create_unix(struct p9_client *client, struct fs_context *fc)
        if (!addr || !strlen(addr))
                return -EINVAL;
 
-       if (strlen(addr) >= UNIX_PATH_MAX) {
+       sun_server.sun_family = PF_UNIX;
+       if (strscpy(sun_server.sun_path, addr) < 0) {
                pr_err("%s (%d): address too long: %s\n",
                       __func__, task_pid_nr(current), addr);
                return -ENAMETOOLONG;
        }
-
-       sun_server.sun_family = PF_UNIX;
-       strcpy(sun_server.sun_path, addr);
        err = __sock_create(current->nsproxy->net_ns, PF_UNIX,
                            SOCK_STREAM, 0, &csocket, 1);
        if (err < 0) {