virtiofsd: Trim down imported files

There's a lot of the original fuse code we don't need; trim them down.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
with additional trimming by:
Signed-off-by: Misono Tomohiro <misono.tomohiro@jp.fujitsu.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Xiao Yang <yangx.jy@cn.fujitsu.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>

1 files changed, 1 insertions, 70 deletions

diff --git a/tools/virtiofsd/buffer.c b/tools/virtiofsd/buffer.c
index 5ab9b87455..aefb7dbf15 100644
--- a/tools/virtiofsd/buffer.c
+++ b/tools/virtiofsd/buffer.c
@@ -157,73 +157,6 @@ static ssize_t fuse_buf_fd_to_fd(const struct fuse_buf *dst, size_t dst_off,
 	return copied;
 }
 
-#ifdef HAVE_SPLICE
-static ssize_t fuse_buf_splice(const struct fuse_buf *dst, size_t dst_off,
-			       const struct fuse_buf *src, size_t src_off,
-			       size_t len, enum fuse_buf_copy_flags flags)
-{
-	int splice_flags = 0;
-	off_t *srcpos = NULL;
-	off_t *dstpos = NULL;
-	off_t srcpos_val;
-	off_t dstpos_val;
-	ssize_t res;
-	size_t copied = 0;
-
-	if (flags & FUSE_BUF_SPLICE_MOVE)
-		splice_flags |= SPLICE_F_MOVE;
-	if (flags & FUSE_BUF_SPLICE_NONBLOCK)
-		splice_flags |= SPLICE_F_NONBLOCK;
-
-	if (src->flags & FUSE_BUF_FD_SEEK) {
-		srcpos_val = src->pos + src_off;
-		srcpos = &srcpos_val;
-	}
-	if (dst->flags & FUSE_BUF_FD_SEEK) {
-		dstpos_val = dst->pos + dst_off;
-		dstpos = &dstpos_val;
-	}
-
-	while (len) {
-		res = splice(src->fd, srcpos, dst->fd, dstpos, len,
-			     splice_flags);
-		if (res == -1) {
-			if (copied)
-				break;
-
-			if (errno != EINVAL || (flags & FUSE_BUF_FORCE_SPLICE))
-				return -errno;
-
-			/* Maybe splice is not supported for this combination */
-			return fuse_buf_fd_to_fd(dst, dst_off, src, src_off,
-						 len);
-		}
-		if (res == 0)
-			break;
-
-		copied += res;
-		if (!(src->flags & FUSE_BUF_FD_RETRY) &&
-		    !(dst->flags & FUSE_BUF_FD_RETRY)) {
-			break;
-		}
-
-		len -= res;
-	}
-
-	return copied;
-}
-#else
-static ssize_t fuse_buf_splice(const struct fuse_buf *dst, size_t dst_off,
-			       const struct fuse_buf *src, size_t src_off,
-			       size_t len, enum fuse_buf_copy_flags flags)
-{
-	(void) flags;
-
-	return fuse_buf_fd_to_fd(dst, dst_off, src, src_off, len);
-}
-#endif
-
-
 static ssize_t fuse_buf_copy_one(const struct fuse_buf *dst, size_t dst_off,
 				 const struct fuse_buf *src, size_t src_off,
 				 size_t len, enum fuse_buf_copy_flags flags)
@@ -247,10 +180,8 @@ static ssize_t fuse_buf_copy_one(const struct fuse_buf *dst, size_t dst_off,
 		return fuse_buf_write(dst, dst_off, src, src_off, len);
 	} else if (!dst_is_fd) {
 		return fuse_buf_read(dst, dst_off, src, src_off, len);
-	} else if (flags & FUSE_BUF_NO_SPLICE) {
-		return fuse_buf_fd_to_fd(dst, dst_off, src, src_off, len);
 	} else {
-		return fuse_buf_splice(dst, dst_off, src, src_off, len, flags);
+		return fuse_buf_fd_to_fd(dst, dst_off, src, src_off, len);
 	}
 }