From: braam <braam>
Date: Mon, 25 Feb 2002 15:49:21 +0000 (+0000)
Subject: - add the truncate obd call
X-Git-Tag: v1_7_100~5980
X-Git-Url: https://git.whamcloud.com/?a=commitdiff_plain;h=15a2e099d4a6ee03dddf008b0044e7cc8abc3f8b;p=fs%2Flustre-release.git

- add the truncate obd call
---

diff --git a/lustre/include/linux/lustre_idl.h b/lustre/include/linux/lustre_idl.h
index dba1809..7da184b 100644
--- a/lustre/include/linux/lustre_idl.h
+++ b/lustre/include/linux/lustre_idl.h
@@ -55,6 +55,7 @@
 #define OST_GET_INFO   6
 #define OST_CONNECT    7
 #define OST_DISCONNECT 8
+#define OST_PUNCH      9
 
 /* packet types */
 #define OST_TYPE_REQ 1
diff --git a/lustre/osc/osc_request.c b/lustre/osc/osc_request.c
index 8fefa77..587629c 100644
--- a/lustre/osc/osc_request.c
+++ b/lustre/osc/osc_request.c
@@ -281,6 +281,39 @@ static int osc_create(struct obd_conn *conn, struct obdo *oa)
 	return 0;
 }
 
+static int osc_punch(struct obd_conn *conn, struct obdo *oa, obd_size count, obd_off offset)
+{
+	struct ptlrpc_request *request;
+	int rc; 
+
+	if (!oa) { 
+		CERROR("oa NULL\n"); 
+	}
+	request = ost_prep_req(OST_PUNCH, 0, NULL, 0, NULL);
+	if (!request) { 
+		CERROR("cannot pack req!\n"); 
+		return -ENOMEM;
+	}
+	
+	memcpy(&request->rq_req.ost->oa, oa, sizeof(*oa));
+	request->rq_req.ost->oa.o_valid = ~0;
+	request->rq_req.ost->oa.o_size = offset;
+	request->rq_req.ost->oa.o_blocks = count;
+	request->rq_replen = 
+		sizeof(struct ptlrep_hdr) + sizeof(struct ost_rep);
+	
+	rc = osc_queue_wait(conn, request);
+	if (rc) { 
+		EXIT;
+		goto out;
+	}
+	memcpy(oa, &request->rq_rep.ost->oa, sizeof(*oa));
+
+ out:
+	osc_free_req(request);
+	return 0;
+}
+
 static int osc_destroy(struct obd_conn *conn, struct obdo *oa)
 {
 	struct ptlrpc_request *request;
@@ -459,7 +492,8 @@ struct obd_ops osc_obd_ops = {
 	o_setattr: osc_setattr,
 	o_connect: osc_connect,
 	o_disconnect: osc_disconnect,
-	o_brw: osc_brw
+	o_brw: osc_brw,
+	o_punch: osc_punch
 };
 
 static int __init osc_init(void)
diff --git a/lustre/ost/ost_handler.c b/lustre/ost/ost_handler.c
index 6b8f813..45e8238 100644
--- a/lustre/ost/ost_handler.c
+++ b/lustre/ost/ost_handler.c
@@ -208,6 +208,34 @@ static int ost_create(struct ost_obd *ost, struct ptlrpc_request *req)
 	return 0;
 }
 
+static int ost_punch(struct ost_obd *ost, struct ptlrpc_request *req)
+{
+	struct obd_conn conn; 
+	int rc;
+
+	ENTRY;
+	
+	conn.oc_id = req->rq_req.ost->connid;
+	conn.oc_dev = ost->ost_tgt;
+
+	rc = ost_pack_rep(NULL, 0, NULL, 0, &req->rq_rephdr, &req->rq_rep.ost,
+			  &req->rq_replen, &req->rq_repbuf); 
+	if (rc) { 
+		CERROR("cannot pack reply\n"); 
+		return rc;
+	}
+
+	memcpy(&req->rq_rep.ost->oa, &req->rq_req.ost->oa, sizeof(req->rq_req.ost->oa));
+
+	req->rq_rep.ost->result =ost->ost_tgt->obd_type->typ_ops->o_punch
+		(&conn, &req->rq_rep.ost->oa, 
+		 req->rq_rep.ost->oa.o_size,
+		 req->rq_rep.ost->oa.o_blocks); 
+
+	EXIT;
+	return 0;
+}
+
 
 static int ost_setattr(struct ost_obd *ost, struct ptlrpc_request *req)
 {
@@ -451,6 +479,10 @@ int ost_handle(struct obd_device *obddev, struct ptlrpc_request *req)
 		CDEBUG(D_INODE, "brw\n");
 		rc = ost_brw(ost, req);
 		break;
+	case OST_PUNCH:
+		CDEBUG(D_INODE, "punch\n");
+		rc = ost_punch(ost, req);
+		break;
 	default:
 		req->rq_status = -ENOTSUPP;
 		return ost_error(obddev, req);