/**
* Instantiate a downloader
*
* @v job Job control interface
* @v image Image to fill with downloaded file
* @v type Location type to pass to xfer_open()
* @v ... Remaining arguments to pass to xfer_open()
* @ret rc Return status code
*
* Instantiates a downloader object to download the specified URI into
* the specified image object.
*/
int create_downloader ( struct interface *job, struct image *image,
int type, ... ) {
struct downloader *downloader;
va_list args;
int rc;
/* Allocate and initialise structure */
downloader = zalloc ( sizeof ( *downloader ) );
if ( ! downloader )
return -ENOMEM;
ref_init ( &downloader->refcnt, downloader_free );
intf_init ( &downloader->job, &downloader_job_desc,
&downloader->refcnt );
intf_init ( &downloader->xfer, &downloader_xfer_desc,
&downloader->refcnt );
downloader->image = image_get ( image );
va_start ( args, type );
/* Instantiate child objects and attach to our interfaces */
if ( ( rc = xfer_vopen ( &downloader->xfer, type, args ) ) != 0 )
goto err;
/* Attach parent interface, mortalise self, and return */
intf_plug_plug ( &downloader->job, job );
ref_put ( &downloader->refcnt );
va_end ( args );
return 0;
err:
downloader_finished ( downloader, rc );
ref_put ( &downloader->refcnt );
va_end ( args );
return rc;
}
static int numeric_resolv ( struct interface *resolv,
const char *name, struct sockaddr *sa ) {
struct numeric_resolv *numeric;
struct sockaddr_in *sin;
/* Allocate and initialise structure */
numeric = zalloc ( sizeof ( *numeric ) );
if ( ! numeric )
return -ENOMEM;
ref_init ( &numeric->refcnt, NULL );
intf_init ( &numeric->resolv, &null_intf_desc, &numeric->refcnt );
process_init ( &numeric->process, &numeric_process_desc,
&numeric->refcnt );
memcpy ( &numeric->sa, sa, sizeof ( numeric->sa ) );
DBGC ( numeric, "NUMERIC %p attempting to resolve \"%s\"\n",
numeric, name );
/* Attempt to resolve name */
sin = ( ( struct sockaddr_in * ) &numeric->sa );
if ( inet_aton ( name, &sin->sin_addr ) != 0 ) {
sin->sin_family = AF_INET;
} else {
numeric->rc = -EINVAL;
}
/* Attach to parent interface, mortalise self, and return */
intf_plug_plug ( &numeric->resolv, resolv );
ref_put ( &numeric->refcnt );
return 0;
}
/**
* Create ELS response
*
* @v xchg Exchange interface
* @v port Fibre Channel port
* @v port_id Local port ID
* @v peer_port_id Peer port ID
* @ret rc Return status code
*/
static int fc_els_respond ( struct interface *xchg, struct fc_port *port,
struct fc_port_id *port_id,
struct fc_port_id *peer_port_id ) {
struct fc_els *els;
/* Allocate and initialise structure */
els = fc_els_create ( port, port_id, peer_port_id );
if ( ! els )
return -ENOMEM;
/* Attach to exchange interface, mortalise self, and return */
intf_plug_plug ( &els->xchg, xchg );
ref_put ( &els->refcnt );
return 0;
}
/**
* Create ELS request
*
* @v job Parent job-control interface
* @v port Fibre Channel port
* @v peer_port_id Peer port ID
* @v handler ELS handler
* @ret rc Return status code
*/
int fc_els_request ( struct interface *job, struct fc_port *port,
struct fc_port_id *peer_port_id,
struct fc_els_handler *handler ) {
struct fc_els *els;
/* Allocate and initialise structure */
els = fc_els_create ( port, &port->port_id, peer_port_id );
if ( ! els )
return -ENOMEM;
els->handler = handler;
els->flags = FC_ELS_REQUEST;
process_add ( &els->process );
/* Attach to parent job interface, mortalise self, and return */
intf_plug_plug ( &els->job, job );
ref_put ( &els->refcnt );
return 0;
}
static int numeric_resolv ( struct interface *resolv,
const char *name, struct sockaddr *sa ) {
struct numeric_resolv *numeric;
/* Allocate and initialise structure */
numeric = zalloc ( sizeof ( *numeric ) );
if ( ! numeric )
return -ENOMEM;
ref_init ( &numeric->refcnt, NULL );
intf_init ( &numeric->resolv, &null_intf_desc, &numeric->refcnt );
process_init ( &numeric->process, &numeric_process_desc,
&numeric->refcnt );
memcpy ( &numeric->sa, sa, sizeof ( numeric->sa ) );
/* Attempt to resolve name */
numeric->rc = sock_aton ( name, &numeric->sa );
/* Attach to parent interface, mortalise self, and return */
intf_plug_plug ( &numeric->resolv, resolv );
ref_put ( &numeric->refcnt );
return 0;
}
/**
* Start name resolution
*
* @v resolv Name resolution interface
* @v name Name to resolve
* @v sa Socket address to complete
* @ret rc Return status code
*/
int resolv ( struct interface *resolv, const char *name,
struct sockaddr *sa ) {
struct resolv_mux *mux;
size_t name_len = ( strlen ( name ) + 1 );
int rc;
/* Allocate and initialise structure */
mux = zalloc ( sizeof ( *mux ) + name_len );
if ( ! mux )
return -ENOMEM;
ref_init ( &mux->refcnt, NULL );
intf_init ( &mux->parent, &null_intf_desc, &mux->refcnt );
intf_init ( &mux->child, &resmux_child_desc, &mux->refcnt );
mux->resolver = table_start ( RESOLVERS );
if ( sa )
memcpy ( &mux->sa, sa, sizeof ( mux->sa ) );
memcpy ( mux->name, name, name_len );
DBGC ( mux, "RESOLV %p attempting to resolve \"%s\"\n", mux, name );
/* Start first resolver in chain. There will always be at
* least one resolver (the numeric resolver), so no need to
* check for the zero-resolvers-available case.
*/
if ( ( rc = resmux_try ( mux ) ) != 0 )
goto err;
/* Attach parent interface, mortalise self, and return */
intf_plug_plug ( &mux->parent, resolv );
ref_put ( &mux->refcnt );
return 0;
err:
ref_put ( &mux->refcnt );
return rc;
}
