From 7ea0ddc733285cfa25d6535954de4784b054902a Mon Sep 17 00:00:00 2001
From: dzwdz
Date: Mon, 26 Dec 2022 23:22:03 +0100
Subject: amd64/ata: write support

---
 src/kernel/arch/amd64/driver/pata.c | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

(limited to 'src/kernel/arch/amd64/driver')

diff --git a/src/kernel/arch/amd64/driver/pata.c b/src/kernel/arch/amd64/driver/pata.c
index 77b654c..3d5e3c6 100644
--- a/src/kernel/arch/amd64/driver/pata.c
+++ b/src/kernel/arch/amd64/driver/pata.c
@@ -56,7 +56,18 @@ static void accept(struct vfs_request *req) {
 			break;
 
 		case VFSOP_WRITE:
-			panic_unimplemented();
+			if (id == root_id) {
+				vfsreq_finish_short(req, -EACCES);
+				break;
+			}
+			fs_normslice(&req->offset, &req->input.len, ata_size(id), false);
+			len = min(req->input.len, sizeof wbuf);
+			if (len != 0) {
+				virt_cpy_from(req->caller->pages, wbuf, req->input.buf, len);
+				ata_write(id, wbuf, len, req->offset);
+			}
+			vfsreq_finish_short(req, len);
+			break;
 
 		case VFSOP_GETSIZE:
 			if (id == root_id) {
-- 
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