/* accept a socket (creates a new fd) */
static struct sock *accept_socket( obj_handle_t handle )
{
struct sock *acceptsock;
struct sock *sock;
int acceptfd;
sock = (struct sock *)get_handle_obj( current->process, handle, FILE_READ_DATA, &sock_ops );
if (!sock)
return NULL;
if ( sock->deferred )
{
acceptsock = sock->deferred;
sock->deferred = NULL;
}
else
{
if ((acceptfd = accept_new_fd( sock )) == -1)
{
release_object( sock );
return NULL;
}
if (!(acceptsock = alloc_object( &sock_ops )))
{
close( acceptfd );
release_object( sock );
return NULL;
}
init_sock( acceptsock );
/* newly created socket gets the same properties of the listening socket */
acceptsock->state = FD_WINE_CONNECTED|FD_READ|FD_WRITE;
if (sock->state & FD_WINE_NONBLOCKING)
acceptsock->state |= FD_WINE_NONBLOCKING;
acceptsock->mask = sock->mask;
acceptsock->proto = sock->proto;
acceptsock->type = sock->type;
acceptsock->family = sock->family;
acceptsock->window = sock->window;
acceptsock->message = sock->message;
if (sock->event) acceptsock->event = (struct event *)grab_object( sock->event );
acceptsock->flags = sock->flags;
if (!(acceptsock->fd = create_anonymous_fd( &sock_fd_ops, acceptfd, &acceptsock->obj,
get_fd_options( sock->fd ) )))
{
release_object( acceptsock );
release_object( sock );
return NULL;
}
}
clear_error();
sock->pmask &= ~FD_ACCEPT;
sock->hmask &= ~FD_ACCEPT;
sock_reselect( sock );
release_object( sock );
return acceptsock;
}
/* duplicate a handle */
obj_handle_t duplicate_handle( struct process *src, obj_handle_t src_handle, struct process *dst,
unsigned int access, unsigned int attr, unsigned int options )
{
obj_handle_t res;
struct handle_entry *entry;
unsigned int src_access;
struct object *obj = get_handle_obj( src, src_handle, 0, NULL );
if (!obj) return 0;
if ((entry = get_handle( src, src_handle )))
src_access = entry->access;
else /* pseudo-handle, give it full access */
src_access = obj->ops->map_access( obj, GENERIC_ALL );
src_access &= ~RESERVED_ALL;
if (options & DUP_HANDLE_SAME_ACCESS)
access = src_access;
else
access = obj->ops->map_access( obj, access ) & ~RESERVED_ALL;
/* asking for the more access rights than src_access? */
if (access & ~src_access)
{
if (options & DUP_HANDLE_MAKE_GLOBAL)
res = alloc_global_handle( obj, access );
else
res = alloc_handle( dst, obj, access, attr );
}
else
{
if (options & DUP_HANDLE_MAKE_GLOBAL)
res = alloc_global_handle_no_access_check( obj, access );
else if ((options & DUP_HANDLE_CLOSE_SOURCE) && src == dst &&
entry && !(entry->access & RESERVED_CLOSE_PROTECT))
{
if (attr & OBJ_INHERIT) access |= RESERVED_INHERIT;
entry->access = access;
res = src_handle;
}
else
res = alloc_handle_entry( dst, obj, access, attr );
}
release_object( obj );
return res;
}
struct file *get_file_obj( struct process *process, obj_handle_t handle, unsigned int access )
{
return (struct file *)get_handle_obj( process, handle, access, &file_ops );
}
struct keyed_event *get_keyed_event_obj( struct process *process, obj_handle_t handle, unsigned int access )
{
return (struct keyed_event *)get_handle_obj( process, handle, access, &keyed_event_ops );
}
struct mapping *get_mapping_obj( struct process *process, obj_handle_t handle, unsigned int access )
{
return (struct mapping *)get_handle_obj( process, handle, access, &mapping_ops );
}
/* retrieve a pointer to a desktop object */
struct desktop *get_desktop_obj( struct process *process, obj_handle_t handle, unsigned int access )
{
return (struct desktop *)get_handle_obj( process, handle, access, &desktop_ops );
}
/* retrieve the process window station, checking the handle access rights */
struct winstation *get_process_winstation( struct process *process, unsigned int access )
{
return (struct winstation *)get_handle_obj( process, process->winstation,
access, &winstation_ops );
}
/* accept a socket (creates a new fd) */
static struct sock *accept_socket( obj_handle_t handle )
{
struct sock *acceptsock;
struct sock *sock;
int acceptfd;
struct sockaddr saddr;
sock = (struct sock *)get_handle_obj( current->process, handle, FILE_READ_DATA, &sock_ops );
if (!sock)
return NULL;
if ( sock->deferred )
{
acceptsock = sock->deferred;
sock->deferred = NULL;
}
else
{
/* Try to accept(2). We can't be safe that this an already connected socket
* or that accept() is allowed on it. In those cases we will get -1/errno
* return.
*/
unsigned int slen = sizeof(saddr);
acceptfd = accept( get_unix_fd(sock->fd), &saddr, &slen);
if (acceptfd==-1)
{
sock_set_error();
release_object( sock );
return NULL;
}
if (!(acceptsock = alloc_object( &sock_ops )))
{
close( acceptfd );
release_object( sock );
return NULL;
}
/* newly created socket gets the same properties of the listening socket */
fcntl(acceptfd, F_SETFL, O_NONBLOCK); /* make socket nonblocking */
acceptsock->state = FD_WINE_CONNECTED|FD_READ|FD_WRITE;
if (sock->state & FD_WINE_NONBLOCKING)
acceptsock->state |= FD_WINE_NONBLOCKING;
acceptsock->mask = sock->mask;
acceptsock->hmask = 0;
acceptsock->pmask = 0;
acceptsock->polling = 0;
acceptsock->type = sock->type;
acceptsock->family = sock->family;
acceptsock->event = NULL;
acceptsock->window = sock->window;
acceptsock->message = sock->message;
acceptsock->wparam = 0;
if (sock->event) acceptsock->event = (struct event *)grab_object( sock->event );
acceptsock->flags = sock->flags;
acceptsock->deferred = NULL;
acceptsock->read_q = NULL;
acceptsock->write_q = NULL;
memset( acceptsock->errors, 0, sizeof(acceptsock->errors) );
if (!(acceptsock->fd = create_anonymous_fd( &sock_fd_ops, acceptfd, &acceptsock->obj,
get_fd_options( sock->fd ) )))
{
release_object( acceptsock );
release_object( sock );
return NULL;
}
}
clear_error();
sock->pmask &= ~FD_ACCEPT;
sock->hmask &= ~FD_ACCEPT;
sock_reselect( sock );
release_object( sock );
return acceptsock;
}
