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Data-transfer interface should now be functionally complete.

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This commit is contained in:
Michael Brown
2007-05-15 15:23:09 +00:00
parent 817a446cc6
commit 5471bfbbbe
4 changed files with 244 additions and 74 deletions
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33
src/core/downloader.c
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@@ -115,7 +115,7 @@ static void downloader_job_start ( struct job_interface *job ) {
container_of ( job, struct downloader, job );
/* Start data transfer */
xfer_start ( &downloader->xfer );
xfer_request_all ( &downloader->xfer );
}
/**
@@ -152,17 +152,30 @@ static struct job_interface_operations downloader_job_operations = {
* @v pos New position
* @ret rc Return status code
*/
static int downloader_xfer_seek ( struct xfer_interface *xfer, size_t pos ) {
static int downloader_xfer_seek ( struct xfer_interface *xfer, off_t offset,
int whence ) {
struct downloader *downloader =
container_of ( xfer, struct downloader, xfer );
off_t new_pos;
int rc;
/* Ensure that we have enough buffer space for this buffer position */
if ( ( rc = downloader_ensure_size ( downloader, pos ) ) != 0 )
return rc;
/* Calculate new buffer position */
switch ( whence ) {
case SEEK_SET:
new_pos = offset;
break;
case SEEK_CUR:
new_pos = ( downloader->pos + offset );
break;
default:
assert ( 0 );
return -EINVAL;
}
/* Update current buffer position */
downloader->pos = pos;
/* Ensure that we have enough buffer space for this buffer position */
if ( ( rc = downloader_ensure_size ( downloader, new_pos ) ) != 0 )
return rc;
downloader->pos = new_pos;
return 0;
}
@@ -216,11 +229,11 @@ static void downloader_xfer_close ( struct xfer_interface *xfer, int rc ) {
/** Downloader data transfer interface operations */
static struct xfer_interface_operations downloader_xfer_operations = {
.start = ignore_xfer_start,
.close = downloader_xfer_close,
.vredirect = default_xfer_vredirect,
.vredirect = vopen,
.request = ignore_xfer_request,
.seek = downloader_xfer_seek,
.deliver = xfer_deliver_as_raw,
.deliver_iob = xfer_deliver_as_raw,
.deliver_raw = downloader_xfer_deliver_raw,
};