diff options
| -rw-r--r-- | pflocal/io.c | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/pflocal/io.c b/pflocal/io.c index bdf09100..5f6348d2 100644 --- a/pflocal/io.c +++ b/pflocal/io.c @@ -452,6 +452,53 @@ S_io_pathconf (struct sock_user *user, int name, int *value) else return EINVAL; } + +error_t +S_io_identity (struct sock_user *user, + mach_port_t *id, mach_msg_type_name_t *id_type, + mach_port_t *fsys_id, mach_msg_type_name_t *fsys_id_type, + int *fileno) +{ + static mach_port_t server_id = MACH_PORT_NULL; + error_t err = 0; + struct sock *sock; + + if (! user) + return EOPNOTSUPP; + + if (server_id == MACH_PORT_NULL) + { + static struct mutex server_id_lock = MUTEX_INITIALIZER; + + mutex_lock (&server_id_lock); + if (server_id == MACH_PORT_NULL) /* Recheck with the lock held. */ + err = mach_port_allocate (mach_task_self (), MACH_PORT_RIGHT_RECEIVE, + &server_id); + mutex_unlock (&server_id_lock); + + if (err) + return err; + } + + sock = user->sock; + + mutex_lock (&sock->lock); + if (sock->id == MACH_PORT_NULL) + err = mach_port_allocate (mach_task_self (), MACH_PORT_RIGHT_RECEIVE, + &sock->id); + mutex_unlock (&sock->lock); + + if (! err) + { + *id = sock->id; + *id_type = MACH_MSG_TYPE_MAKE_SEND; + *fsys_id = server_id; + *fsys_id_type = MACH_MSG_TYPE_MAKE_SEND; + *fileno = sock->id; /* Might as well */ + } + + return err; +} /* Stubs for currently unsupported rpcs. */ |