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[xfer] Generalise metadata "whence" field to "flags" field

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iPXE has never supported SEEK_END; the usage of "whence" offers only
the options of SEEK_SET and SEEK_CUR and so is effectively a boolean
flag.  Further flags will be required to support additional metadata
required by the Fibre Channel network model, so repurpose the "whence"
field as a generic "flags" field.

xfer_seek() has always been used with SEEK_SET, so remove the "whence"
field altogether from its argument list.

Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown
2010-07-02 12:12:16 +01:00
parent b0eacbd421
commit 364b92521a
8 changed files with 30 additions and 40 deletions
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2
src/core/downloader.c
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@@ -160,7 +160,7 @@ static int downloader_xfer_deliver ( struct downloader *downloader,
int rc;
/* Calculate new buffer position */
if ( meta->whence != SEEK_CUR )
if ( meta->flags & XFER_FL_ABS_OFFSET )
downloader->pos = 0;
downloader->pos += meta->offset;