Re: [PATCH bpf-next v4 1/5] net: Add connect_socket() helper

[Jiayuan Chen <jiayuan.chen@linux.dev>]

On 8/7/26 2:22 AM, Mahe Tardy wrote:
> Add a helper that connects an existing socket while invoking the LSM
> hook. Reuse it in __sys_connect_file() to avoid duplicating the connect
> logic. Other socket operations have equivalent helpers that trigger the
> appropriate LSM hooks that can be reused, this one was the only one
> missing.
>
> Signed-off-by: Mahe Tardy <mahe.tardy@gmail.com>
> ---
>   include/linux/socket.h |  2 ++
>   net/socket.c           | 32 ++++++++++++++++++--------------
>   2 files changed, 20 insertions(+), 14 deletions(-)
>
> diff --git a/include/linux/socket.h b/include/linux/socket.h
> index 2a8d7b14f1d1..8964528e3823 100644
> --- a/include/linux/socket.h
> +++ b/include/linux/socket.h
> @@ -461,6 +461,8 @@ extern struct file *__sys_socket_file(int family, int type, int protocol);
>   extern int __sys_bind(int fd, struct sockaddr __user *umyaddr, int addrlen);
>   extern int __sys_bind_socket(struct socket *sock, struct sockaddr_storage *address,
>   			     int addrlen);
> +extern int connect_socket(struct socket *sock, struct sockaddr_storage *addr,
> +				int addrlen, int flags);
>   extern int __sys_connect_file(struct file *file, struct sockaddr_storage *addr,
>   			      int addrlen, int file_flags);
>   extern int __sys_connect(int fd, struct sockaddr __user *uservaddr,
> diff --git a/net/socket.c b/net/socket.c
> index 63c69a0fa74e..126a674f534d 100644
> --- a/net/socket.c
> +++ b/net/socket.c
> @@ -2103,6 +2103,20 @@ SYSCALL_DEFINE3(accept, int, fd, struct sockaddr __user *, upeer_sockaddr,
>   	return __sys_accept4(fd, upeer_sockaddr, upeer_addrlen, 0);
>   }
>
> +int connect_socket(struct socket *sock, struct sockaddr_storage *address,
> +			 int addrlen, int flags)
> +{


Please fix the checkpatch warning if revise

CHECK: extern prototypes should be avoided in .h files
#27: FILE: include/linux/socket.h:464:
+extern int connect_socket(struct socket *sock, struct sockaddr_storage 
*addr,

CHECK: Alignment should match open parenthesis
#28: FILE: include/linux/socket.h:465:
+extern int connect_socket(struct socket *sock, struct sockaddr_storage 
*addr,
+                int addrlen, int flags);

CHECK: Alignment should match open parenthesis
#41: FILE: net/socket.c:2107:
+int connect_socket(struct socket *sock, struct sockaddr_storage *address,
+             int addrlen, int flags)