Re: Fwd: [PATCH 4/6] New GNU/Hurd backend

Hi,

El 6/8/26 a les 2:22, Roy Marples ha escrit:
> Hurd lacks the means of authenticating a socket. ideally getpeereid(3) 
> should be supported as it's sockets are BSD centric
> which would make my life easy.
Maybe I could work on adding getpeereid() to he Hurd. The approach would be:

1. Add a new op to the socket protocol, called socket_getpeereid:

```
routine socket_getpeereid ( 

   sock: socket_t; 

   out euid: uid_t; 

   out egid: gid_t);
```

2. pflocal, modify `struct sock` to add to new fields:

```
/* Effective identity of the socket's peer, when connected.  */ 

uid_t peer_uid; 

gid_t peer_gid;
```

3. pflocal, on sock_connect, set the values:

```
sock1->peer_uid = sock2->uid; 

sock1->peer_gid = sock2->gid;
```
And vice-versa


4. pflocal, implement the new op:

```
S_socket_getpeereid (struct sock_user *user, uid_t *euid, gid_t *egid) 

   { 

     ... 

   }
```

Finally, I would need to define getpeereid() in glibc to call the new op 
and mimic how BSD behaves.

Samuel, does the plan make sense? Is it something we want to do?