lib9p: Adjust for reads to be zero-copy

1 files changed, 7 insertions, 7 deletions

diff --git a/lib9p_util/static.c b/lib9p_util/static.c
index 50bb129..7f1e6b7 100644
--- a/lib9p_util/static.c
+++ b/lib9p_util/static.c
@@ -218,27 +218,27 @@ static uint32_t util9p_static_file_iounit(struct util9p_static_file *self) {
 	assert(self);
 	return 0;
 }
-static uint32_t util9p_static_file_pread(struct util9p_static_file *self, struct lib9p_srv_ctx *ctx,
-                                         void *buf,
-                                         uint32_t byte_count,
-                                         uint64_t byte_offset) {
+static void util9p_static_file_pread(struct util9p_static_file *self, struct lib9p_srv_ctx *ctx,
+                                     uint32_t byte_count, uint64_t byte_offset,
+                                     struct iovec *ret) {
 	assert(self);
 	assert(ctx);
+	assert(ret);
 
 	size_t data_size = util9p_static_file_size(self);
 
 	if (byte_offset > (uint64_t)data_size) {
 		lib9p_error(&ctx->basectx,
 		            LINUX_EINVAL, "offset is past end-of-file length");
-		return 0;
+		return;
 	}
 
 	size_t beg_off = (size_t)byte_offset;
 	size_t end_off = beg_off + (size_t)byte_count;
 	if (end_off > data_size)
 		end_off = data_size;
-	memcpy(buf, &self->data_start[beg_off], end_off-beg_off);
-	return (uint32_t)(end_off-beg_off);
+	ret->iov_base = &self->data_start[beg_off];
+	ret->iov_len = end_off-beg_off;
 }
 static uint32_t util9p_static_file_pwrite(struct util9p_static_file *self, struct lib9p_srv_ctx *ctx,
                                           void *LM_UNUSED(buf),