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[xfer] Send xfer_window_changed() after xfer_vredirect() 

Modify the default action for xfer_vredirect() to automatically send
xfer_window_changed() messages to both the new child and the parent
interfaces.  This will allow the elimination of processes that simply
poll on xfer_window() to determine when a redirection has completed
successfully.

Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown 2011-06-22 16:40:13 +01:00
parent c68bf14559
commit ba3633782b
1 changed files with 16 additions and 1 deletions
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17
src/core/xfer.c
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@ -54,6 +54,7 @@ static struct xfer_metadata dummy_metadata;
* @ret rc Return status code
*/
int xfer_vredirect ( struct interface *intf, int type, va_list args ) {
struct interface tmp = INTF_INIT ( null_intf_desc );
struct interface *dest;
xfer_vredirect_TYPE ( void * ) *op =
intf_get_dest_op_no_passthru ( intf, xfer_vredirect, &dest );
@ -66,8 +67,22 @@ int xfer_vredirect ( struct interface *intf, int type, va_list args ) {
if ( op ) {
rc = op ( object, type, args );
} else {
/* Default is to reopen the interface as instructed */
/* Default is to reopen the interface as instructed,
* then send xfer_window_changed() messages to both
* new child and parent interfaces. Since our
* original child interface is likely to be closed and
* unplugged as a result of the call to
* xfer_vreopen(), we create a temporary interface in
* order to be able to send xfer_window_changed() to
* the parent.
*/
intf_plug ( &tmp, dest );
rc = xfer_vreopen ( dest, type, args );
if ( rc == 0 ) {
xfer_window_changed ( dest );
xfer_window_changed ( &tmp );
}
intf_unplug ( &tmp );
}
if ( rc != 0 ) {